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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2012 Red Hat, Inc.
*/
/*
* This example monitors whether NM is running by checking if
* "org.freedesktop.NetworkManager" is owned by a process on D-Bus.
* It uses QDBusServiceWatcher class.
*
* Standalone compilation:
* moc-qt4 monitor-nm-running.cpp -o monitor-nm-running.moc
* g++ -Wall `pkg-config --libs --cflags QtCore QtDBus` monitor-nm-running.cpp -o monitor-nm-running
*
* You don't need to have NetworkManager devel package installed.
*/
#include <iostream>
#include <QObject>
#include <QCoreApplication>
#include <QtDBus/QDBusServiceWatcher>
#include <QtDBus/QDBusConnection>
#include <QtCore/QDebug>
const QString NM_DBUS_SERVICE = "org.freedesktop.NetworkManager";
// Define a class with slots
class NMWatcher: public QObject {
Q_OBJECT;
public slots:
void serviceRegistered(const QString& name);
void serviceUnregistered(const QString& name);
};
void NMWatcher::serviceRegistered(const QString& name)
{
std::cout << "Name '" << name.toUtf8().constData() << "' registered"
<< " => NM is running" << std::endl;
}
void NMWatcher::serviceUnregistered(const QString& name)
{
std::cout << "Name '" << name.toUtf8().constData() << "' unregistered"
<< " => NM is not running" << std::endl;
}
int main(int argc, char *argv[])
{
QCoreApplication app (argc, argv);
qDebug() << "Monitor 'org.freedesktop.NetworkManager' D-Bus name";
qDebug() << "===================================================";
NMWatcher nm_watcher;
// Watch all changes of D-Bus NM_DBUS_SERVICE name
QDBusServiceWatcher *watcher = new QDBusServiceWatcher(NM_DBUS_SERVICE,
QDBusConnection::systemBus());
QObject::connect(watcher, SIGNAL(serviceRegistered(const QString&)),
&nm_watcher, SLOT(serviceRegistered(const QString&)));
QObject::connect(watcher, SIGNAL(serviceUnregistered(const QString&)),
&nm_watcher, SLOT(serviceUnregistered(const QString&)));
app.exec();
delete watcher;
return 0;
}
#include "monitor-nm-running.moc"
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