90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
// SPDX-License-Identifier: GPL-3.0-or-later
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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*
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* Copyright (C) 2013 - 2024, nymea GmbH
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* Copyright (C) 2024 - 2025, chargebyte austria GmbH
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*
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* This file is part of nymea-plugins.
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*
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* nymea-plugins 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, either version 3 of the License, or
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* (at your option) any later version.
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*
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* nymea-plugins 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 GNU
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* General Public License 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 nymea-plugins. If not, see <https://www.gnu.org/licenses/>.
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*
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#include "discovery.h"
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#include <QUdpSocket>
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#include <QTimer>
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#include <QMetaObject>
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#include "extern-plugininfo.h"
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Discovery::Discovery(QObject *parent) : QObject(parent)
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{
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}
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void Discovery::discover()
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{
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QUdpSocket *searchSocket = new QUdpSocket(this);
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// Note: This will fail, and it's not a problem, but it is required to force the socket to stick to IPv4...
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searchSocket->bind(QHostAddress::AnyIPv4, 30303);
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QString discoveryString = "Durchsuchen: Wer ist da?";
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qint64 len = searchSocket->writeDatagram(discoveryString.toUtf8(), QHostAddress("255.255.255.255"), 30303);
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if (len != discoveryString.length()) {
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searchSocket->deleteLater();
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qCWarning(dcAnelElektronik()) << "Error sending discovery";
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QTimer::singleShot(0, this, [=](){
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emit finished(true);
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});
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return;
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}
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QTimer::singleShot(2000, this, [this, searchSocket](){
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while(searchSocket->hasPendingDatagrams()) {
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char buffer[1024];
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QHostAddress senderAddress;
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int len = searchSocket->readDatagram(buffer, 1024, &senderAddress);
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QByteArray data = QByteArray::fromRawData(buffer, len);
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qCDebug(dcAnelElektronik()) << "Have datagram:" << data;
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if (!data.startsWith("NET-CONTROL")) {
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qCDebug(dcAnelElektronik()) << "Failed to parse discovery datagram from" << senderAddress << data;
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continue;
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}
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QStringList parts = QString(data).split("\r\n");
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if (parts.count() != 4) {
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qCDebug(dcAnelElektronik()) << "Failed to parse discovery datagram from" << senderAddress << data;
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continue;
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}
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qCDebug(dcAnelElektronik()) << "Found NET-CONTROL:" << senderAddress << parts.at(0) << parts.at(1) << parts.at(2) << parts.at(3) << senderAddress.protocol();
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Result result;
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result.name = parts.at(2);
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result.macAddress = parts.at(1);
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result.ipAddress = senderAddress.toString();
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result.port = parts.at(3).toInt();
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m_results.insert(result.macAddress, result);
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}
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emit finished(false);
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searchSocket->deleteLater();
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});
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}
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QHash<QString, Discovery::Result> Discovery::results() const
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{
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return m_results;
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}
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