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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2011 Red Hat, Inc.
*/
/*
* The example shows how to list connections. Contrast this example with
* list-connections-gdbus.c, which is a bit lower level and talks directly to NM
* using GDBus.
*
* Compile with:
* gcc -Wall list-connections-libnm.c -o list-connections-libnm `pkg-config --cflags --libs libnm`
*/
#include <glib.h>
#include <stdio.h>
#include <stdlib.h>
#include <NetworkManager.h>
/* Print details of connection */
static void
show_connection(NMConnection *connection)
{
NMSettingConnection *s_con;
guint64 timestamp;
char *timestamp_str;
char timestamp_real_str[64];
const char *val1, *val2, *val3, *val4, *val5;
s_con = nm_connection_get_setting_connection(connection);
if (s_con) {
struct tm localtime_data;
/* Get various info from NMSettingConnection and show it */
timestamp = nm_setting_connection_get_timestamp(s_con);
timestamp_str = g_strdup_printf("%" G_GUINT64_FORMAT, timestamp);
strftime(timestamp_real_str,
sizeof(timestamp_real_str),
"%c",
localtime_r((time_t *) ×tamp, &localtime_data));
val1 = nm_setting_connection_get_id(s_con);
val2 = nm_setting_connection_get_uuid(s_con);
val3 = nm_setting_connection_get_connection_type(s_con);
val4 = nm_connection_get_path(connection);
val5 = timestamp ? timestamp_real_str : "never";
printf("%-25s | %s | %-15s | %-43s | %s\n", val1, val2, val3, val4, val5);
g_free(timestamp_str);
}
}
int
main(int argc, char *argv[])
{
NMClient *client;
GError *error = NULL;
const GPtrArray *connections;
int i;
if (!(client = nm_client_new(NULL, &error))) {
g_message("Error: Could not connect to NetworkManager: %s.", error->message);
g_error_free(error);
return EXIT_FAILURE;
}
if (!nm_client_get_nm_running(client)) {
g_message("Error: Can't obtain connections: NetworkManager is not running.");
return EXIT_FAILURE;
}
/* Now the connections can be listed. */
connections = nm_client_get_connections(client);
printf("Connections:\n===================\n");
for (i = 0; i < connections->len; i++)
show_connection(connections->pdata[i]);
g_object_unref(client);
return EXIT_SUCCESS;
}
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