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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* vim: set ft=c ts=4 sts=4 sw=4 expandtab smartindent: */
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* (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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