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/*
* This file is part of Xfce (https://gitlab.xfce.org).
*
* Copyright (c) 2021-2022 Jan Ziak <0xe2.0x9a.0x9b@xfce.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <string.h>
#include "network.h"
#ifdef HAVE_LIBGTOP
#include <glibtop/netlist.h>
#include <glibtop/netload.h>
static gint
read_netload_libgtop (gulong *bytes)
{
glibtop_netlist netlist;
char **interfaces = glibtop_get_netlist (&netlist);
if (!interfaces)
return -1;
*bytes = 0;
for (char **i = interfaces; *i != NULL; i++)
{
glibtop_netload netload;
glibtop_get_netload (&netload, *i);
*bytes += netload.bytes_total;
}
return 0;
}
#else
static gint
read_netload_libgtop (gulong *bytes)
{
return -1;
}
#endif
static const char *const PROC_NET_NETSTAT = "/proc/net/netstat";
static gint
read_netload_proc (gulong *bytes)
{
char buf[4*1024];
unsigned long long dummy, in_octets, out_octets;
{
FILE *fd = fopen (PROC_NET_NETSTAT, "r");
if (!fd)
return -1;
size_t size = fread (buf, sizeof (*buf), G_N_ELEMENTS (buf) - 1, fd);
if (size == 0)
{
fclose(fd);
return -1;
}
buf[size] = '\0';
if (fclose (fd) != 0)
return -1;
}
const char *s = buf;
/* Skip first 3 lines */
s = strchr(s, '\n'); if (!s) return -1;
s++;
s = strchr(s, '\n'); if (!s) return -1;
s++;
s = strchr(s, '\n'); if (!s) return -1;
s++;
if (sscanf (s, "IpExt: %llu %llu %llu %llu %llu %llu %llu %llu",
&dummy, &dummy, &dummy, &dummy, &dummy, &dummy,
&in_octets, &out_octets) != 8)
return -1;
*bytes = in_octets + out_octets;
return 0;
}
gint
read_netload (gulong *net, gulong *NTotal)
{
static gulong bytes[2];
static gint64 time[2];
*net = 0;
*NTotal = 0;
time[1] = g_get_monotonic_time ();
if (read_netload_proc (&bytes[1]) != 0)
if (read_netload_libgtop (&bytes[1]) != 0)
return -1;
if (time[0] != 0 && G_LIKELY (time[1] > time[0]) && G_LIKELY (bytes[1] >= bytes[0]))
{
guint64 diff_bits = 8 * (bytes[1] - bytes[0]);
gdouble diff_time = (time[1] - time[0]) / 1e6;
*net = MIN (100 * diff_bits / diff_time / MAX_BANDWIDTH_BITS, 100);
*NTotal = diff_bits / diff_time;
}
bytes[0] = bytes[1];
time[0] = time[1];
return 0;
}
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