var net = require('net'); const path = require('path') const { ipcRenderer } = require('electron') const log = require('electron-log'); const daemonLog = log.scope('daemon'); // https://stackoverflow.com/a/26227660 var appDataFolder = process.env.APPDATA || (process.platform == 'darwin' ? process.env.HOME + '/Library/Application Support' : process.env.HOME + "/.config") var configFolder = path.join(appDataFolder, "FreeDATA"); var configPath = path.join(configFolder, 'config.json') const config = require(configPath); var daemon = new net.Socket(); var socketchunk = ''; // Current message, per connection. // global to keep track of daemon connection error emissions var daemonShowConnectStateError = 1 setTimeout(connectDAEMON, 500) function connectDAEMON() { if (daemonShowConnectStateError == 1) { daemonLog.info('connecting to daemon'); } //clear message buffer after reconnecting or inital connection socketchunk = ''; if (config.tnclocation == 'localhost') { daemon.connect(3001, '127.0.0.1') } else { daemon.connect(config.daemon_port, config.daemon_host) } //client.setTimeout(5000); } daemon.on('connect', function(err) { daemonLog.info('daemon connection established'); let Data = { daemon_connection: daemon.readyState, }; ipcRenderer.send('request-update-daemon-connection', Data); daemonShowConnectStateError = 1 }) daemon.on('error', function(err) { if (daemonShowConnectStateError == 1) { daemonLog.error('daemon connection error'); daemonLog.info('Make sure the daemon is started.'); daemonLog.info('Run "python daemon.py" in the tnc directory.'); daemonLog.debug(err) daemonShowConnectStateError = 0 } setTimeout(connectDAEMON, 500) daemon.destroy(); let Data = { daemon_connection: daemon.readyState, }; ipcRenderer.send('request-update-daemon-connection', Data); }); /* client.on('close', function(data) { console.log(' TNC connection closed'); setTimeout(connectTNC, 2000) let Data = { daemon_connection: daemon.readyState, }; ipcRenderer.send('request-update-daemon-connection', Data); }); */ daemon.on('end', function(data) { daemonLog.warn('daemon connection ended'); daemon.destroy(); setTimeout(connectDAEMON, 500) let Data = { daemon_connection: daemon.readyState, }; ipcRenderer.send('request-update-daemon-connection', Data); }); //exports.writeCommand = function(command){ writeDaemonCommand = function(command) { // we use the writingCommand function to update our TCPIP state because we are calling this function a lot // if socket opened, we are able to run commands if (daemon.readyState == 'open') { //uiMain.setDAEMONconnection('open') daemon.write(command + '\n'); } if (daemon.readyState == 'closed') { //uiMain.setDAEMONconnection('closed') } if (daemon.readyState == 'opening') { //uiMain.setDAEMONconnection('opening') } let Data = { daemon_connection: daemon.readyState, }; ipcRenderer.send('request-update-daemon-connection', Data); } // "https://stackoverflow.com/questions/9070700/nodejs-net-createserver-large-amount-of-data-coming-in" daemon.on('data', function(socketdata) { /* inspired by: stackoverflow.com questions 9070700 nodejs-net-createserver-large-amount-of-data-coming-in */ socketdata = socketdata.toString('utf8'); // convert data to string socketchunk += socketdata// append data to buffer so we can stick long data together // check if we received begin and end of json data if (socketchunk.startsWith('{"') && socketchunk.endsWith('"}\n')) { var data = '' // split data into chunks if we received multiple commands socketchunk = socketchunk.split("\n"); data = JSON.parse(socketchunk[0]) // search for empty entries in socketchunk and remove them for (i = 0; i < socketchunk.length; i++) { if (socketchunk[i] === ''){ socketchunk.splice(i, 1); } } //iterate through socketchunks array to execute multiple commands in row for (i = 0; i < socketchunk.length; i++) { //check if data is not empty if(socketchunk[i].length > 0){ //try to parse JSON try { data = JSON.parse(socketchunk[i]) } catch (e) { console.log(e); // "SyntaxError daemonLog.error(e); daemonLog.debug(socketchunk[i]) socketchunk = '' } } if (data['command'] == 'daemon_state') { let Data = { input_devices: data['input_devices'], output_devices: data['output_devices'], python_version: data['python_version'], hamlib_version: data['hamlib_version'], serial_devices: data['serial_devices'], tnc_running_state: data['daemon_state'][0]['status'], ram_usage: data['ram'], cpu_usage: data['cpu'], version: data['version'], }; ipcRenderer.send('request-update-daemon-state', Data); } if (data['command'] == 'test_hamlib') { let Data = { hamlib_result: data['result'], }; ipcRenderer.send('request-update-hamlib-test', Data); } } //finally delete message buffer socketchunk = ''; } }); function hexToBytes(hex) { for (var bytes = [], c = 0; c < hex.length; c += 2) bytes.push(parseInt(hex.substr(c, 2), 16)); return bytes; } exports.getDaemonState = function() { //function getDaemonState(){ command = '{"type" : "get", "command" : "daemon_state"}' writeDaemonCommand(command) } // START TNC // ` `== multi line string exports.startTNC = function(mycall, mygrid, rx_audio, tx_audio, radiocontrol, devicename, deviceport, pttprotocol, pttport, serialspeed, data_bits, stop_bits, handshake, rigctld_ip, rigctld_port, enable_fft, enable_scatter, low_bandwidth_mode, tuning_range_fmin, tuning_range_fmax, enable_fsk, tx_audio_level, respond_to_cq) { var json_command = JSON.stringify({ type: 'set', command: 'start_tnc', parameter: [{ mycall: mycall, mygrid: mygrid, rx_audio: rx_audio, tx_audio: tx_audio, radiocontrol: radiocontrol, devicename: devicename, deviceport: deviceport, pttprotocol: pttprotocol, pttport: pttport, serialspeed: serialspeed, data_bits: data_bits, stop_bits: stop_bits, handshake: handshake, rigctld_port: rigctld_port, rigctld_ip: rigctld_ip, enable_scatter: enable_scatter, enable_fft: enable_fft, enable_fsk: enable_fsk, low_bandwidth_mode : low_bandwidth_mode, tuning_range_fmin : tuning_range_fmin, tuning_range_fmax : tuning_range_fmax, tx_audio_level : tx_audio_level, respond_to_cq : respond_to_cq }] }) daemonLog.debug(json_command); writeDaemonCommand(json_command) } // STOP TNC exports.stopTNC = function() { command = '{"type" : "set", "command": "stop_tnc" , "parameter": "---" }' writeDaemonCommand(command) } // TEST HAMLIB exports.testHamlib = function(radiocontrol, devicename, deviceport, serialspeed, pttprotocol, pttport, data_bits, stop_bits, handshake, rigctld_ip, rigctld_port) { var json_command = JSON.stringify({ type: 'get', command: 'test_hamlib', parameter: [{ radiocontrol: radiocontrol, devicename: devicename, deviceport: deviceport, pttprotocol: pttprotocol, pttport: pttport, serialspeed: serialspeed, data_bits: data_bits, stop_bits: stop_bits, handshake: handshake, rigctld_port: rigctld_port, rigctld_ip: rigctld_ip }] }) daemonLog.debug(json_command); writeDaemonCommand(json_command) } //Save myCall exports.saveMyCall = function(callsign) { command = '{"type" : "set", "command": "mycallsign" , "parameter": "' + callsign + '"}' writeDaemonCommand(command) } // Save myGrid exports.saveMyGrid = function(grid) { command = '{"type" : "set", "command": "mygrid" , "parameter": "' + grid + '"}' writeDaemonCommand(command) }