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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2011 Red Hat, Inc.
*/
/*
* This example shows how to set manual IPv4 addresses to a connection.
* It uses Qt and D-Bus libraries to do that.
*
* Standalone compilation:
* g++ -Wall `pkg-config --libs --cflags QtCore QtDBus QtNetwork` `pkg-config --cflags libnm` change-ipv4-addresses.cpp -o change-ipv4-addresses
*
* You don't need to have NetworkManager devel package installed; you can just
* grab nm-dbus-interface.h and put it in the path
*/
#include <QtDBus/QDBusConnection>
#include <QtDBus/QDBusInterface>
#include <QtDBus/QDBusMetaType>
#include <QtDBus/QDBusReply>
#include <QtCore/QList>
#include <QtCore/QMap>
#include <QtCore/QString>
#include <QtCore/QDebug>
#include <QtNetwork/QHostAddress>
#include <arpa/inet.h>
#include <nm-dbus-interface.h>
typedef QMap<QString, QMap<QString, QVariant> > Connection;
Q_DECLARE_METATYPE(Connection)
Q_DECLARE_METATYPE(QList<uint>);
Q_DECLARE_METATYPE(QList<QList<uint> >);
const QString NM_SETTING_CONNECTION_SETTING_NAME = "connection";
const QString NM_SETTING_CONNECTION_ID = "id";
const QString NM_SETTING_CONNECTION_UUID = "uuid";
const QString getConnection(const QString& connectionUuid, Connection *found_connection)
{
Connection settings;
QDBusInterface *ifaceForSettings;
// Create a D-Bus proxy; NM_DBUS_* defined in NetworkManager.h
QDBusInterface interface(
NM_DBUS_SERVICE,
NM_DBUS_PATH_SETTINGS,
NM_DBUS_INTERFACE_SETTINGS,
QDBusConnection::systemBus());
// Get connection list and find the connection with 'connectionUuid'
QDBusReply<QList<QDBusObjectPath> > result1 = interface.call("ListConnections");
foreach (const QDBusObjectPath& connection, result1.value()) {
ifaceForSettings = new QDBusInterface(
NM_DBUS_SERVICE,
connection.path(),
NM_DBUS_INTERFACE_SETTINGS_CONNECTION,
QDBusConnection::systemBus());
QDBusReply<Connection> result2 = ifaceForSettings->call("GetSettings");
delete ifaceForSettings;
settings = result2.value();
QVariantMap connectionSettings = settings.value(NM_SETTING_CONNECTION_SETTING_NAME);
QString uuid = connectionSettings.value(NM_SETTING_CONNECTION_UUID).toString();
if (uuid == connectionUuid) {
// Connection found; set the settings to found_connection
// connection object path
*found_connection = settings;
return connection.path();
}
}
return QString();
}
void changeConnection(const QString& uuid)
{
// Register types with D-Bus
qDBusRegisterMetaType<Connection>();
qDBusRegisterMetaType<QList<uint> >();
qDBusRegisterMetaType<QList<QList<uint> > >();
Connection connection;
QString conPath;
// Find connection by provided UUID
conPath = getConnection(uuid, &connection);
if (!conPath.isEmpty()) {
QList<QList<uint> > addresses;
QList<uint> addr1, addr2;
// Add some addresses
addr1 << htonl(QHostAddress("192.168.100.4").toIPv4Address()) << 24 << htonl(QHostAddress("192.168.100.1").toIPv4Address());
addr2 << htonl(QHostAddress("10.0.1.222").toIPv4Address()) << 8 << htonl(QHostAddress("10.0.1.254").toIPv4Address());
addresses << addr1 << addr2;
// Set method to "Manual" and put addresses to the connection map
connection["ipv4"]["method"] = "manual";
connection["ipv4"]["addresses"] = QVariant::fromValue(addresses);
QDBusInterface interface(
NM_DBUS_SERVICE,
conPath,
NM_DBUS_INTERFACE_SETTINGS_CONNECTION,
QDBusConnection::systemBus());
// Call Update() D-Bus method to update connection
QDBusReply<void> result = interface.call("Update", QVariant::fromValue(connection));
if (result.isValid()) {
qDebug() << QString("Connection successfully updated (path %1)").arg(conPath);
} else {
qDebug() << QString("Error: could not update connection: %1 %2").arg(result.error().name()).arg(result.error().message());
}
} else {
qDebug() << QString("Error: connection with UUID '%1' not found").arg(uuid);
}
}
int main(int argc, char *argv[])
{
if (argc != 2) {
qDebug() << QString("Usage: %1 <UUID>").arg(argv[0]);
return -1;
}
changeConnection(argv[1]);
}
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