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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2011, 2014 Red Hat, Inc.
*/
/*
* The example shows how to call the AddConnection() D-Bus method to add a
* connection to the system settings service. It uses GDBus, plus a few defines
* from the NetworkManager headers. Contrast add-connection-libnm, which is
* higher level because it uses libnm.
*
* Compile with:
* gcc -Wall add-connection-gdbus.c -o add-connection-gdbus `pkg-config --cflags --libs libnm uuid`
*/
#include <gio/gio.h>
#include <uuid/uuid.h>
#include <nm-dbus-interface.h>
/* include NetworkManager.h for the defines, but we don't link against
* libnm. */
#include <NetworkManager.h>
/* copied from libnm-core/nm-utils.c */
char *
nm_utils_uuid_generate(void)
{
uuid_t uuid;
char * buf;
buf = g_malloc0(37);
uuid_generate_random(uuid);
uuid_unparse_lower(uuid, &buf[0]);
return buf;
}
static void
add_connection(GDBusProxy *proxy, const char *con_name)
{
GVariantBuilder connection_builder;
GVariantBuilder setting_builder;
char * uuid;
const char * new_con_path;
GVariant * ret;
GError * error = NULL;
/* Initialize connection GVariantBuilder */
g_variant_builder_init(&connection_builder, G_VARIANT_TYPE("a{sa{sv}}"));
/* Build up the 'connection' Setting */
g_variant_builder_init(&setting_builder, G_VARIANT_TYPE("a{sv}"));
uuid = nm_utils_uuid_generate();
g_variant_builder_add(&setting_builder,
"{sv}",
NM_SETTING_CONNECTION_UUID,
g_variant_new_string(uuid));
g_free(uuid);
g_variant_builder_add(&setting_builder,
"{sv}",
NM_SETTING_CONNECTION_ID,
g_variant_new_string(con_name));
g_variant_builder_add(&setting_builder,
"{sv}",
NM_SETTING_CONNECTION_TYPE,
g_variant_new_string(NM_SETTING_WIRED_SETTING_NAME));
g_variant_builder_add(&connection_builder,
"{sa{sv}}",
NM_SETTING_CONNECTION_SETTING_NAME,
&setting_builder);
/* Add the (empty) 'wired' Setting */
g_variant_builder_init(&setting_builder, G_VARIANT_TYPE("a{sv}"));
g_variant_builder_add(&connection_builder,
"{sa{sv}}",
NM_SETTING_WIRED_SETTING_NAME,
&setting_builder);
/* Build up the 'ipv4' Setting */
g_variant_builder_init(&setting_builder, G_VARIANT_TYPE("a{sv}"));
g_variant_builder_add(&setting_builder,
"{sv}",
NM_SETTING_IP_CONFIG_METHOD,
g_variant_new_string(NM_SETTING_IP4_CONFIG_METHOD_AUTO));
g_variant_builder_add(&connection_builder,
"{sa{sv}}",
NM_SETTING_IP4_CONFIG_SETTING_NAME,
&setting_builder);
/* Call AddConnection with the connection dictionary as argument.
* (g_variant_new() will consume the floating GVariant returned from
* &connection_builder, and g_dbus_proxy_call_sync() will consume the
* floating variant returned from g_variant_new(), so no cleanup is needed.
*/
ret = g_dbus_proxy_call_sync(proxy,
"AddConnection",
g_variant_new("(a{sa{sv}})", &connection_builder),
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
&error);
if (ret) {
g_variant_get(ret, "(&o)", &new_con_path);
g_print("Added: %s\n", new_con_path);
g_variant_unref(ret);
} else {
g_dbus_error_strip_remote_error(error);
g_print("Error adding connection: %s\n", error->message);
g_clear_error(&error);
}
}
int
main(int argc, char *argv[])
{
GDBusProxy *proxy;
GError * error = NULL;
/* 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,
&error);
if (!proxy) {
g_dbus_error_strip_remote_error(error);
g_print("Could not create NetworkManager D-Bus proxy: %s\n", error->message);
g_error_free(error);
return 1;
}
/* Add a connection */
add_connection(proxy, "__Test connection__");
g_object_unref(proxy);
return 0;
}
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