kopia lustrzana https://gitlab.com/eliggett/wfview
347 wiersze
9.9 KiB
C++
347 wiersze
9.9 KiB
C++
#include "pttyhandler.h"
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#include "logcategories.h"
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#include <QDebug>
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#include <QFile>
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#ifndef Q_OS_WIN
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <errno.h>
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#endif
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// Copyright 2017-2021 Elliott H. Liggett & Phil Taylor
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pttyHandler::pttyHandler(QString pty)
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{
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//constructor
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if (pty == "" || pty.toLower() == "none")
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{
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// Just return if pty is not configured.
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return;
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}
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portName = pty;
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#ifdef Q_OS_WIN
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// TODO: The following should become arguments and/or functions
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// Add signal/slot everywhere for comm port setup.
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// Consider how to "re-setup" and how to save the state for next time.
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baudRate = 115200;
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stopBits = 1;
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portName = pty;
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#endif
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openPort();
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}
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void pttyHandler::openPort()
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{
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serialError = false;
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bool success=false;
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#ifdef Q_OS_WIN
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port = new QSerialPort();
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port->setPortName(portName);
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port->setBaudRate(baudRate);
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port->setStopBits(QSerialPort::OneStop);// OneStop is other option
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success = port->open(QIODevice::ReadWrite);
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if (success) {
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connect(port, &QSerialPort::readyRead, this, std::bind(&pttyHandler::receiveDataIn, this, (int)0));
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}
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#else
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// Generic method in Linux/MacOS to find a pty
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ptfd = ::posix_openpt(O_RDWR | O_NONBLOCK);
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if (ptfd >=0)
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{
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qInfo(logSerial()) << "Opened pt device: " << ptfd << ", attempting to grant pt status";
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if (grantpt(ptfd))
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{
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qInfo(logSerial()) << "Failed to grantpt";
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return;
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}
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if (unlockpt(ptfd))
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{
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qInfo(logSerial()) << "Failed to unlock pt";
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return;
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}
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// we're good!
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qInfo(logSerial()) << "Opened pseudoterminal, slave name :" << ptsname(ptfd);
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// Open the slave device to keep alive.
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ptKeepAlive = open(ptsname(ptfd), O_RDONLY);
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ptReader = new QSocketNotifier(ptfd, QSocketNotifier::Read, this);
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connect(ptReader, &QSocketNotifier::activated,
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this, &pttyHandler::receiveDataIn);
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success=true;
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}
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#endif
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if (!success)
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{
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ptfd = 0;
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qInfo(logSerial()) << "Could not open pseudo terminal port, please restart.";
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isConnected = false;
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serialError = true;
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emit haveSerialPortError(portName, "Could not open pseudo terminal port. Please restart.");
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return;
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}
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#ifndef Q_OS_WIN
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ptDevSlave = QString::fromLocal8Bit(ptsname(ptfd));
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if (portName != "" && portName.toLower() != "none")
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{
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if (!QFile::link(ptDevSlave, portName))
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{
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qInfo(logSerial()) << "Error creating link to" << ptDevSlave << "from" << portName;
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} else {
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qInfo(logSerial()) << "Created link to" << ptDevSlave << "from" << portName;
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}
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}
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#endif
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isConnected = true;
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}
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pttyHandler::~pttyHandler()
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{
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this->closePort();
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}
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void pttyHandler::receiveDataFromRigToPtty(const QByteArray& data)
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{
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int fePos=data.lastIndexOf((char)0xfe);
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if (fePos > 0 && data.length() > fePos+2)
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fePos=fePos-1;
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else
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{
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qDebug(logSerial()) << "Invalid command";
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printHex(data,false,true);
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}
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if (disableTransceive && ((unsigned char)data[fePos + 2] == 0x00 || (unsigned char)data[fePos + 3] == 0x00))
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{
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// Ignore data that is sent to/from transceive address as client has requested transceive disabled.
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qDebug(logSerial()) << "Transceive command filtered";
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return;
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}
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if (isConnected && (unsigned char)data[fePos + 2] != 0xE1 && (unsigned char)data[fePos + 3] != 0xE1)
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{
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// send to the pseudo port as well
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// index 2 is dest, 0xE1 is wfview, 0xE0 is assumed to be the other device.
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// Changed to "Not 0xE1"
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// 0xE1 = wfview
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// 0xE0 = pseudo-term host
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// 0x00 = broadcast to all
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//qInfo(logSerial()) << "Sending data from radio to pseudo-terminal";
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sendDataOut(data);
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}
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}
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void pttyHandler::sendDataOut(const QByteArray& writeData)
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{
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qint64 bytesWritten = 0;
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//qInfo(logSerial()) << "Data to pseudo term:";
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//printHex(writeData, false, true);
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if (isConnected) {
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mutex.lock();
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#ifdef Q_OS_WIN
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bytesWritten = port->write(writeData);
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#else
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bytesWritten = ::write(ptfd, writeData.constData(), writeData.size());
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#endif
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if (bytesWritten != writeData.length()) {
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qInfo(logSerial()) << "bytesWritten: " << bytesWritten << " length of byte array: " << writeData.length()\
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<< " size of byte array: " << writeData.size()\
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<< " Wrote all bytes? " << (bool)(bytesWritten == (qint64)writeData.size());
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}
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mutex.unlock();
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}
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}
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void pttyHandler::receiveDataIn(int fd) {
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#ifndef Q_OS_WIN
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ssize_t available = 255; // Read up to 'available' bytes
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#else
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Q_UNUSED(fd);
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#endif
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// Linux will correctly return the number of available bytes with the FIONREAD ioctl
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// Sadly MacOS always returns zero!
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#ifdef Q_OS_LINUX
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int ret = ::ioctl(fd, FIONREAD, (char *) &available);
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if (ret != 0)
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return;
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#endif
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#ifdef Q_OS_WIN
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port->startTransaction();
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inPortData = port->readAll();
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#else
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inPortData.resize(available);
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ssize_t got = ::read(fd, inPortData.data(), available);
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int err = errno;
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if (got < 0) {
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qInfo(logSerial()) << tr("Read failed: %1").arg(QString::fromLatin1(strerror(err)));
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return;
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}
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inPortData.resize(got);
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#endif
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if (inPortData.startsWith("\xFE\xFE"))
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{
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if (inPortData.endsWith("\xFD"))
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{
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// good!
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#ifdef Q_OS_WIN
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port->commitTransaction();
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#endif
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int lastFE = inPortData.lastIndexOf((char)0xfe);
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if (civId == 0 && inPortData.length() > lastFE + 2 && (quint8)inPortData[lastFE + 2] > (quint8)0xdf && (quint8)inPortData[lastFE + 2] < (quint8)0xef) {
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// This is (should be) the remotes CIV id.
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civId = (quint8)inPortData[lastFE + 2];
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qInfo(logSerial()) << "pty detected remote CI-V:" << hex << civId;
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}
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else if (civId != 0 && inPortData.length() > lastFE + 2 && (quint8)inPortData[lastFE + 2] != civId)
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{
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civId = (quint8)inPortData[lastFE + 2];
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qInfo(logSerial()) << "pty remote CI-V changed:" << hex << (quint8)civId;
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}
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// filter C-IV transceive command before forwarding on.
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if (inPortData.contains(rigCaps.transceiveCommand))
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{
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//qInfo(logSerial()) << "Filtered transceive command";
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//printHex(inPortData, false, true);
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QByteArray reply= QByteArrayLiteral("\xfe\xfe\x00\x00\xfb\xfd");
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reply[2] = inPortData[3];
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reply[3] = inPortData[2];
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sendDataOut(inPortData); // Echo command back
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sendDataOut(reply);
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if (!disableTransceive) {
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qInfo(logSerial()) << "pty requested CI-V Transceive disable";
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disableTransceive = true;
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}
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}
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else if (inPortData.length() > lastFE + 2 && ((quint8)inPortData[lastFE + 1] == civId || (quint8)inPortData[lastFE + 2] == civId))
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{
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emit haveDataFromPort(inPortData);
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qDebug(logSerial()) << "Data from pseudo term:";
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printHex(inPortData, false, true);
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}
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if (rolledBack)
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{
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// qInfo(logSerial()) << "Rolled back and was successfull. Length: " << inPortData.length();
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//printHex(inPortData, false, true);
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rolledBack = false;
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}
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}
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else {
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// did not receive the entire thing so roll back:
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// qInfo(logSerial()) << "Rolling back transaction. End not detected. Lenth: " << inPortData.length();
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//printHex(inPortData, false, true);
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rolledBack = true;
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#ifdef Q_OS_WIN
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port->rollbackTransaction();
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}
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}
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else {
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port->commitTransaction(); // do not emit data, do not keep data.
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//qInfo(logSerial()) << "Warning: received data with invalid start. Dropping data.";
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//qInfo(logSerial()) << "THIS SHOULD ONLY HAPPEN ONCE!!";
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// THIS SHOULD ONLY HAPPEN ONCE!
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}
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#else
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}
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}
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#endif
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}
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void pttyHandler::closePort()
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{
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#ifdef Q_OS_WIN
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if (port != Q_NULLPTR)
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{
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port->close();
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delete port;
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}
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#else
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if (isConnected && portName != "" && portName.toLower() != "none")
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{
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QFile::remove(portName);
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}
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if (ptKeepAlive > 0) {
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close(ptKeepAlive);
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}
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#endif
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isConnected = false;
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}
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void pttyHandler::debugThis()
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{
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// Do not use, function is for debug only and subject to change.
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qInfo(logSerial()) << "comm debug called.";
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inPortData = port->readAll();
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emit haveDataFromPort(inPortData);
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}
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void pttyHandler::printHex(const QByteArray& pdata, bool printVert, bool printHoriz)
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{
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qDebug(logSerial()) << "---- Begin hex dump -----:";
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QString sdata("DATA: ");
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QString index("INDEX: ");
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QStringList strings;
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for (int i = 0; i < pdata.length(); i++)
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{
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strings << QString("[%1]: %2").arg(i, 8, 10, QChar('0')).arg((unsigned char)pdata[i], 2, 16, QChar('0'));
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sdata.append(QString("%1 ").arg((unsigned char)pdata[i], 2, 16, QChar('0')));
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index.append(QString("%1 ").arg(i, 2, 10, QChar('0')));
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}
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if (printVert)
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{
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for (int i = 0; i < strings.length(); i++)
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{
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//sdata = QString(strings.at(i));
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qDebug(logSerial()) << strings.at(i);
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}
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}
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if (printHoriz)
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{
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qDebug(logSerial()) << index;
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qDebug(logSerial()) << sdata;
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}
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qDebug(logSerial()) << "----- End hex dump -----";
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}
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void pttyHandler::receiveFoundRigID(rigCapabilities rigCaps) {
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this->rigCaps = rigCaps;
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qInfo(logSerial) << "Received rigCapabilities for" << rigCaps.modelName;
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}
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