FreeDATA/tnc/sock.py

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Python
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Fri Dec 25 21:25:14 2020
@author: DJ2LS
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# GET COMMANDS
# "command" : "..."
# SET COMMANDS
# "command" : "..."
# "parameter" : " ..."
# DATA COMMANDS
# "command" : "..."
# "type" : "..."
# "dxcallsign" : "..."
# "data" : "..."
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"""
import socketserver
import threading
import logging
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import ujson as json
#import json
import asyncio
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import time
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import static
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import data_handler
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import helpers
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import sys, os
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class CMDTCPRequestHandler(socketserver.BaseRequestHandler):
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def handle(self):
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print("Client connected...")
# loop through socket buffer until timeout is reached. then close buffer
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socketTimeout = time.time() + 3
while socketTimeout > time.time():
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time.sleep(0.01)
encoding = 'utf-8'
#data = str(self.request.recv(1024), 'utf-8')
data = bytes()
# we need to loop through buffer until end of chunk is reached or timeout occured
while True and socketTimeout > time.time():
chunk = self.request.recv(1024) # .strip()
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data += chunk
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if chunk.endswith(b'}\n'):# or chunk.endswith(b'}') or chunk.endswith(b'\n'):
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break
data = data[:-1] # remove b'\n'
data = str(data, 'utf-8')
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#print(data)
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if len(data) > 0:
socketTimeout = time.time() + static.SOCKET_TIMEOUT
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# convert data to json object
# we need to do some error handling in case of socket timeout or decoding issue
try:
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received_json = json.loads(data)
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#except ValueError as e:
# print("++++++++++++ START OF JSON ERROR +++++++++++++++++++++++")
# print(e)
# print("-----------------------------------")
# print(data)
# print("++++++++++++ END OF JSON ERROR +++++++++++++++++++++++++")
# received_json = {}
# break
#try:
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# CQ CQ CQ -----------------------------------------------------
if received_json["command"] == "CQCQCQ":
#socketTimeout = 0
#asyncio.run(data_handler.transmit_cq())
CQ_THREAD = threading.Thread(target=data_handler.transmit_cq, args=[], name="CQ")
CQ_THREAD.start()
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# PING ----------------------------------------------------------
if received_json["type"] == 'PING' and received_json["command"] == "PING":
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# send ping frame and wait for ACK
dxcallsign = received_json["dxcallsign"]
#asyncio.run(data_handler.transmit_ping(dxcallsign))
PING_THREAD = threading.Thread(target=data_handler.transmit_ping, args=[dxcallsign], name="CQ")
PING_THREAD.start()
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if received_json["type"] == 'ARQ' and received_json["command"] == "sendFile":# and static.ARQ_READY_FOR_DATA == True: # and static.ARQ_STATE == 'CONNECTED' :
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static.TNC_STATE = 'BUSY'
#on a new transmission we reset the timer
static.ARQ_START_OF_TRANSMISSION = int(time.time())
dxcallsign = received_json["dxcallsign"]
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mode = int(received_json["mode"])
n_frames = int(received_json["n_frames"])
filename = received_json["filename"]
filetype = received_json["filetype"]
data = received_json["data"]
checksum = received_json["checksum"]
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static.DXCALLSIGN = bytes(dxcallsign, 'utf-8')
static.DXCALLSIGN_CRC8 = helpers.get_crc_8(static.DXCALLSIGN)
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#dataframe = '{"filename": "'+ filename + '", "filetype" : "' + filetype + '", "data" : "' + data + '", "checksum" : "' + checksum + '"}'
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rawdata = {"filename" : filename , "filetype" :filetype, "data" : data, "checksum" : checksum}
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#dataframe = {filename: filename}
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#data_out = bytes(received_json["data"], 'utf-8')
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dataframe = json.dumps(rawdata)
print(dataframe)
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data_out = bytes(dataframe, 'utf-8')
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print(data_out)
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ARQ_DATA_THREAD = threading.Thread(target=data_handler.open_dc_and_transmit, args=[data_out, mode, n_frames], name="ARQ_DATA")
ARQ_DATA_THREAD.start()
# asyncio.run(data_handler.arq_transmit(data_out))
# SETTINGS AND STATUS ---------------------------------------------
if received_json["type"] == 'SET' and received_json["command"] == 'MYCALLSIGN':
callsign = received_json["parameter"]
if bytes(callsign, encoding) == b'':
self.request.sendall(b'INVALID CALLSIGN')
else:
static.MYCALLSIGN = bytes(callsign, encoding)
static.MYCALLSIGN_CRC8 = helpers.get_crc_8(static.MYCALLSIGN)
logging.info("CMD | MYCALLSIGN: " + str(static.MYCALLSIGN))
if received_json["type"] == 'SET' and received_json["command"] == 'MYGRID':
mygrid = received_json["parameter"]
if bytes(mygrid, encoding) == b'':
self.request.sendall(b'INVALID GRID')
else:
static.MYGRID = bytes(mygrid, encoding)
logging.info("CMD | MYGRID: " + str(static.MYGRID))
if received_json["type"] == 'GET' and received_json["command"] == 'STATION_INFO':
output = {
"COMMAND": "STATION_INFO",
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"TIMESTAMP" : received_json["timestamp"],
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"MY_CALLSIGN": str(static.MYCALLSIGN, encoding),
"DX_CALLSIGN": str(static.DXCALLSIGN, encoding),
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"DX_GRID": str(static.DXGRID, encoding),
"EOF" : "EOF",
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}
jsondata = json.dumps(output)
self.request.sendall(bytes(jsondata, encoding))
if received_json["type"] == 'GET' and received_json["command"] == 'TNC_STATE':
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#print(static.SCATTER)
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output = {
"COMMAND": "TNC_STATE",
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"TIMESTAMP" : received_json["timestamp"],
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"PTT_STATE": str(static.PTT_STATE),
"CHANNEL_STATE": str(static.CHANNEL_STATE),
"TNC_STATE": str(static.TNC_STATE),
"ARQ_STATE": str(static.ARQ_STATE),
"AUDIO_RMS": str(static.AUDIO_RMS),
"BER": str(static.BER),
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"SNR": str(static.SNR),
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"FREQUENCY" : str(static.HAMLIB_FREQUENCY),
"MODE" : str(static.HAMLIB_MODE),
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"BANDWITH" : str(static.HAMLIB_BANDWITH),
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"FFT" : str(static.FFT),
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"SCATTER" : static.SCATTER,
"RX_BUFFER_LENGTH": str(len(static.RX_BUFFER)),
"TX_N_MAX_RETRIES": str(static.TX_N_MAX_RETRIES),
"ARQ_TX_N_FRAMES_PER_BURST": str(static.ARQ_TX_N_FRAMES_PER_BURST),
"ARQ_TX_N_BURSTS": str(static.ARQ_TX_N_BURSTS),
"ARQ_TX_N_CURRENT_ARQ_FRAME": str(int.from_bytes(bytes(static.ARQ_TX_N_CURRENT_ARQ_FRAME), "big")),
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"ARQ_TX_N_TOTAL_ARQ_FRAMES": str(int.from_bytes(bytes(static.TX_BUFFER_SIZE), "big")), # WE NEED TO CHANGE THE JSON TO TX_BUFFER_SIZE?!
"ARQ_RX_FRAME_N_BURSTS": str(static.ARQ_RX_FRAME_N_BURSTS),
"ARQ_RX_N_CURRENT_ARQ_FRAME": str(static.ARQ_RX_N_CURRENT_ARQ_FRAME),
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"ARQ_N_ARQ_FRAMES_PER_DATA_FRAME": str(int.from_bytes(bytes(static.ARQ_N_ARQ_FRAMES_PER_DATA_FRAME), "big")),
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"ARQ_BYTES_PER_MINUTE" : str(static.ARQ_BYTES_PER_MINUTE),
"ARQ_TRANSMISSION_PERCENT" : str(static.ARQ_TRANSMISSION_PERCENT),
"TOTAL_BYTES" : str(static.TOTAL_BYTES),
"STATIONS" : [],
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"EOF" : "EOF",
}
for i in range(0, len(static.HEARD_STATIONS)):
output["STATIONS"].append({"DXCALLSIGN": str(static.HEARD_STATIONS[i][0], 'utf-8'),"DXGRID": str(static.HEARD_STATIONS[i][1], 'utf-8'), "TIMESTAMP": static.HEARD_STATIONS[i][2], "DATATYPE": static.HEARD_STATIONS[i][3], "SNR": static.HEARD_STATIONS[i][4]})
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try:
jsondata = json.dumps(output)
except ValueError as e:
print(e)
try:
self.request.sendall(bytes(jsondata, encoding))
except Exception as e:
print(e)
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if received_json["type"] == 'GET' and received_json["command"] == 'RX_BUFFER':
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output = {
"COMMAND": "RX_BUFFER",
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"DATA-ARRAY" : [],
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"EOF" : "EOF",
}
for i in range(0, len(static.RX_BUFFER)):
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rawdata = json.loads(static.RX_BUFFER[i][3])
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output["DATA-ARRAY"].append({"DXCALLSIGN": str(static.RX_BUFFER[i][0], 'utf-8'),"DXGRID": str(static.RX_BUFFER[i][1], 'utf-8'), "TIMESTAMP": static.RX_BUFFER[i][2], "RXDATA": [rawdata]})
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jsondata = json.dumps(output)
self.request.sendall(bytes(jsondata, encoding))
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#data = data.split('GET:RX_BUFFER:')
#bufferposition = int(data[1]) - 1
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# print("BUFFER-LENGTH:" + str(len(static.RX_BUFFER)))
# bufferposition = 1
# if bufferposition == -1:
# if len(static.RX_BUFFER) > 0:
# self.request.sendall(static.RX_BUFFER[-1])
#if bufferposition <= len(static.RX_BUFFER) > 0:
# print(static.RX_BUFFER[bufferposition])
# self.request.sendall(bytes(static.RX_BUFFER[bufferposition]))
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if received_json["type"] == 'SET' and received_json["command"] == 'DEL_RX_BUFFER':
static.RX_BUFFER = []
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#exception, if JSON cant be decoded
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#except Exception as e:
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except:
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print("############ START OF ERROR #####################")
print("SOCKET COMMAND ERROR: " + data)
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e = sys.exc_info()[0]
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print(e)
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exc_type, exc_obj, exc_tb = sys.exc_info()
fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
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print(exc_type, fname, exc_tb.tb_lineno)
print("############ END OF ERROR #######################")
print("reset of connection...")
socketTimeout = 0
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print("Client disconnected...")
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def start_cmd_socket():
try:
logging.info("SRV | STARTING TCP/IP SOCKET FOR CMD ON PORT: " + str(static.PORT))
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socketserver.TCPServer.allow_reuse_address = True # https://stackoverflow.com/a/16641793
cmdserver = socketserver.TCPServer((static.HOST, static.PORT), CMDTCPRequestHandler)
cmdserver.serve_forever()
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finally:
cmdserver.server_close()