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			270 lines
		
	
	
		
			9.6 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			270 lines
		
	
	
		
			9.6 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2021 Jon Beniston, M7RCE                                        //
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// Copyright (C) 2020 Edouard Griffiths, F4EXB                                   //
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//                                                                               //
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// This program is free software; you can redistribute it and/or modify          //
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// it under the terms of the GNU General Public License as published by          //
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// the Free Software Foundation as version 3 of the License, or                  //
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// (at your option) any later version.                                           //
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//                                                                               //
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// This program is distributed in the hope that it will be useful,               //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of                //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                  //
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// GNU General Public License V3 for more details.                               //
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//                                                                               //
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// You should have received a copy of the GNU General Public License             //
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// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
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///////////////////////////////////////////////////////////////////////////////////
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#include <QDebug>
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#include <QAbstractSocket>
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#include <QTcpServer>
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#include <QTcpSocket>
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#include "webapi/webapiadapterinterface.h"
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#include "webapi/webapiutils.h"
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#include "maincore.h"
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#include "util/ax25.h"
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#include "util/aprs.h"
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#include "aprs.h"
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#include "aprsworker.h"
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MESSAGE_CLASS_DEFINITION(APRSWorker::MsgConfigureAPRSWorker, Message)
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APRSWorker::APRSWorker(APRS *aprs, WebAPIAdapterInterface *webAPIAdapterInterface) :
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    m_aprs(aprs),
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    m_webAPIAdapterInterface(webAPIAdapterInterface),
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    m_msgQueueToFeature(nullptr),
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    m_msgQueueToGUI(nullptr),
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    m_running(false),
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    m_mutex(QMutex::Recursive),
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    m_socket(this)
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{
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    connect(&m_socket, SIGNAL(readyRead()),this, SLOT(recv()));
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    connect(&m_socket, SIGNAL(connected()), this, SLOT(connected()));
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    connect(&m_socket, SIGNAL(disconnected()), this, SLOT(disconnected()));
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#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
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    connect(&m_socket, QOverload<QAbstractSocket::SocketError>::of(&QAbstractSocket::error), this, &APRSWorker::errorOccurred);
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#else
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    connect(&m_socket, &QAbstractSocket::errorOccurred, this, &APRSWorker::errorOccurred);
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#endif
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}
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APRSWorker::~APRSWorker()
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{
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    m_inputMessageQueue.clear();
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}
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void APRSWorker::reset()
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{
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    QMutexLocker mutexLocker(&m_mutex);
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    m_inputMessageQueue.clear();
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}
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bool APRSWorker::startWork()
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{
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    QMutexLocker mutexLocker(&m_mutex);
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    connect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
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    connect(thread(), SIGNAL(started()), this, SLOT(started()));
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    connect(thread(), SIGNAL(finished()), this, SLOT(finished()));
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    m_running = true;
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    return m_running;
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}
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// startWork() is called from main thread. Timers need to be started on worker thread
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void APRSWorker::started()
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{
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    disconnect(thread(), SIGNAL(started()), this, SLOT(started()));
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}
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void APRSWorker::stopWork()
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{
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    QMutexLocker mutexLocker(&m_mutex);
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    disconnect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
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}
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void APRSWorker::finished()
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{
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    // Close any existing connection
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    if (m_socket.isOpen()) {
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        m_socket.close();
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    }
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    m_running = false;
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    disconnect(thread(), SIGNAL(finished()), this, SLOT(finished()));
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}
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void APRSWorker::handleInputMessages()
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{
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    Message* message;
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    while ((message = m_inputMessageQueue.pop()) != nullptr)
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    {
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        if (handleMessage(*message)) {
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            delete message;
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        }
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    }
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}
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bool APRSWorker::handleMessage(const Message& cmd)
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{
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    if (MsgConfigureAPRSWorker::match(cmd))
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    {
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        QMutexLocker mutexLocker(&m_mutex);
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        MsgConfigureAPRSWorker& cfg = (MsgConfigureAPRSWorker&) cmd;
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        applySettings(cfg.getSettings(), cfg.getForce());
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        return true;
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    }
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    else if (MainCore::MsgPacket::match(cmd))
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    {
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        MainCore::MsgPacket& report = (MainCore::MsgPacket&) cmd;
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        AX25Packet ax25;
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        APRSPacket *aprs = new APRSPacket();
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        if (ax25.decode(report.getPacket()))
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        {
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            if (aprs->decode(ax25))
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            {
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                // See: http://www.aprs-is.net/IGateDetails.aspx for gating rules
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                if (!aprs->m_via.contains("TCPIP")
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                    && !aprs->m_via.contains("TCPXX")
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                    && !aprs->m_via.contains("NOGATE")
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                    && !aprs->m_via.contains("RFONLY"))
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                {
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                    aprs->m_dateTime = report.getDateTime();
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                    QString igateMsg = aprs->toTNC2(m_settings.m_igateCallsign);
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                    send(igateMsg.toUtf8(), igateMsg.length());
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                }
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            }
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        }
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        return true;
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    }
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    else
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    {
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        return false;
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    }
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}
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void APRSWorker::applySettings(const APRSSettings& settings, bool force)
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{
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    qDebug() << "APRSWorker::applySettings:"
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            << " m_igateEnabled: " << settings.m_igateEnabled
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            << " m_igateServer: " << settings.m_igateServer
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            << " m_igatePort: " << settings.m_igatePort
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            << " m_igateCallsign: " << settings.m_igateCallsign
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            << " m_igateFilter: " << settings.m_igateFilter
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            << " force: " << force;
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    if ((settings.m_igateEnabled != m_settings.m_igateEnabled)
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        || (settings.m_igateServer != m_settings.m_igateServer)
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        || (settings.m_igatePort != m_settings.m_igatePort)
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        || (settings.m_igateFilter != m_settings.m_igateFilter)
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        || force)
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    {
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        // Close any existing connection
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        if (m_socket.isOpen())
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            m_socket.close();
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        // Open connection
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        if (settings.m_igateEnabled)
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        {
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            if (settings.m_igateServer.isEmpty())
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            {
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                if (m_msgQueueToFeature)
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                    m_msgQueueToFeature->push(APRS::MsgReportWorker::create("IGate server name must be specified"));
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            }
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            else if (settings.m_igateCallsign.isEmpty())
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            {
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                if (m_msgQueueToFeature)
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                    m_msgQueueToFeature->push(APRS::MsgReportWorker::create("IGate callsign must be specified"));
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            }
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            else if (settings.m_igatePasscode.isEmpty())
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            {
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                if (m_msgQueueToFeature)
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                    m_msgQueueToFeature->push(APRS::MsgReportWorker::create("IGate passcode must be specified"));
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            }
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            else
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            {
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                qDebug() << "APRSWorker::applySettings: Connecting to " <<  settings.m_igateServer << ":" << settings.m_igatePort;
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                m_socket.setSocketOption(QAbstractSocket::LowDelayOption, 1);
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                m_socket.connectToHost(settings.m_igateServer, settings.m_igatePort);
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            }
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        }
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    }
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    m_settings = settings;
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}
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void APRSWorker::connected()
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{
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    qDebug() << "APRSWorker::connected " << m_settings.m_igateServer;
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    m_loggedIn = false;
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}
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void APRSWorker::disconnected()
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{
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    qDebug() << "APRSWorker::disconnected";
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    if (m_msgQueueToFeature)
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        m_msgQueueToFeature->push(APRS::MsgReportWorker::create("Disconnected"));
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}
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void APRSWorker::errorOccurred(QAbstractSocket::SocketError socketError)
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{
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    qDebug() << "APRSWorker::errorOccurred: " << socketError;
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    if (m_msgQueueToFeature)
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        m_msgQueueToFeature->push(APRS::MsgReportWorker::create(m_socket.errorString() + " " + socketError));
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}
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void APRSWorker::recv()
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{
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    char buffer[2048];
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    while (m_socket.readLine(buffer, sizeof(buffer)) > 0)
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    {
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        QString packet(buffer);
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        qDebug() << "APRSWorker::recv: " << packet;
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        if (packet.startsWith("#"))
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        {
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            if (!m_loggedIn)
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            {
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                // Log in with callsign and passcode
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                QString login = QString("user %1 pass %2 vers SDRangel 6.4.0%3\r\n").arg(m_settings.m_igateCallsign).arg(m_settings.m_igatePasscode).arg(m_settings.m_igateFilter.isEmpty() ? "" : QString(" filter %1").arg(m_settings.m_igateFilter));
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                send(login.toLatin1(), login.length());
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                m_loggedIn = true;
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                if (m_msgQueueToFeature)
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                    m_msgQueueToFeature->push(APRS::MsgReportWorker::create("Connected"));
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            }
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            else if (packet.indexOf(QString("logresp %1 unverified").arg(m_settings.m_igateCallsign)) >= 0)
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            {
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                if (m_msgQueueToFeature)
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                    m_msgQueueToFeature->push(APRS::MsgReportWorker::create("Invalid IGate callsign or passcode"));
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            }
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        }
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        else if (packet.length() > 0)
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        {
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            // Forward to GUI
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            if (getMessageQueueToGUI())
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            {
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                // Convert TNC2 to AX25 raw bytes
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                QByteArray ax25Packet = APRSPacket::toByteArray(packet);
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                getMessageQueueToGUI()->push(MainCore::MsgPacket::create(m_aprs, ax25Packet, QDateTime::currentDateTime()));
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            }
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        }
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    }
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}
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void APRSWorker::send(const char *data, int length)
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{
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    if (m_settings.m_igateEnabled)
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    {
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        // Reopen connection if it was lost
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        if (!m_socket.isOpen())
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        {
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            qDebug() << "APRSWorker::send: Reconnecting to " << m_settings.m_igateServer << ":" << m_settings.m_igatePort;
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            m_socket.connectToHost(m_settings.m_igateServer, m_settings.m_igatePort);
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        }
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        // Send data
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        qDebug() << "APRSWorker::send: " << QString(QByteArray(data, length));
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        m_socket.write(data, length);
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    }
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}
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