/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2011, 2014 Red Hat, Inc.
 */

/*
 * The example shows how to list connections from the System Settings service
 * using direct D-Bus calls.  The example uses GDBus, plus a few defines from
 * the NetworkManager headers.  Contrast list-connections-libnm, which is higher
 * level because it uses libnm.
 *
 * Compile with:
 *   gcc -Wall list-connections-gdbus.c -o list-connections-gdbus `pkg-config --cflags --libs libnm`
 */

#include <gio/gio.h>

#include <nm-dbus-interface.h>

static void
list_connections(GDBusProxy *proxy)
{
    int       i;
    GError   *error = NULL;
    GVariant *ret;
    char    **paths;

    /* Call ListConnections D-Bus method */
    ret = g_dbus_proxy_call_sync(proxy,
                                 "ListConnections",
                                 NULL,
                                 G_DBUS_CALL_FLAGS_NONE,
                                 -1,
                                 NULL,
                                 &error);
    if (!ret) {
        g_dbus_error_strip_remote_error(error);
        g_print("ListConnections failed: %s\n", error->message);
        g_error_free(error);
        return;
    }

    g_variant_get(ret, "(^ao)", &paths);
    g_variant_unref(ret);

    for (i = 0; paths[i]; i++)
        g_print("%s\n", paths[i]);
    g_strfreev(paths);
}

int
main(int argc, char *argv[])
{
    GDBusProxy *proxy;

    /* Create a D-Bus proxy; NM_DBUS_* defined in nm-dbus-interface.h */
    proxy = g_dbus_proxy_new_for_bus_sync(G_BUS_TYPE_SYSTEM,
                                          G_DBUS_PROXY_FLAGS_NONE,
                                          NULL,
                                          NM_DBUS_SERVICE,
                                          NM_DBUS_PATH_SETTINGS,
                                          NM_DBUS_INTERFACE_SETTINGS,
                                          NULL,
                                          NULL);
    g_assert(proxy != NULL);

    /* List connections of system settings service */
    list_connections(proxy);

    g_object_unref(proxy);

    return 0;
}