155 lines
4.7 KiB
C
155 lines
4.7 KiB
C
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/*
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* Copyright (c) 2003 Bernhard Walle <bernhard.walle@gmx.de>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <gtk/gtk.h>
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#include <time.h>
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#include <sys/time.h>
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#include <libxfce4util/i18n.h>
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#include <libxfcegui4/dialogs.h>
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#include <panel/plugins.h>
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#include <panel/xfce.h>
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#include "net.h"
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/*
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* Basic code taken from IceWM
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* (c) Marko Macek and others, GNU General Public License
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*
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* Converted from C++ to C (using glib data types) by Bernhard Walle
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*/
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void get_current_netload (const gchar* device, gint64 *in, gint64 *out, gint64 *tot)
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{
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static guint64 prev_ibytes = 0, cur_ibytes = 0, offset_ibytes = 0;
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static guint64 prev_obytes = 0, cur_obytes = 0, offset_obytes = 0;
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static struct timeval prev_time;
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static gboolean first = TRUE;
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struct timeval curr_time;
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gdouble delta_t;
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gint64 ni, no;
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gchar buf[BUFSIZ];
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gchar *p;
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gint64 ipackets, opackets, ierrs, oerrs, idrop, odrop, ififo, ofifo,
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iframe, ocolls, ocarrier, icomp, ocomp, imcast;
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FILE *fp = NULL;
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if (in != NULL && out != NULL && tot != NULL)
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{
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*in = *out = *tot = 0;
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}
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if (first)
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{
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gettimeofday(&prev_time, NULL);
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}
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gettimeofday(&curr_time, NULL);
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delta_t = (gdouble) ((curr_time.tv_sec - prev_time.tv_sec) * 1000000L
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+ (curr_time.tv_usec - prev_time.tv_usec)) / 1000000.0;
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if ( (fp = fopen("/proc/net/dev", "r")) == NULL)
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{
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return;
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}
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while ( fgets(buf, BUFSIZ, fp) != NULL ) {
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p = buf;
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while (*p == ' ')
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{
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p++;
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}
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if (strncmp(p, device, strlen(device)) == 0 && p[strlen(device)] == ':')
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{
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p = strchr(p, ':') + 1;
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if (sscanf(p, "%llu %lld %lld %lld %lld %lld %lld %lld" " %llu %lld %lld %lld %lld %lld %lld %lld",
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&cur_ibytes, &ipackets, &ierrs, &idrop, &ififo, &iframe, &icomp, &imcast,
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&cur_obytes, &opackets, &oerrs, &odrop, &ofifo, &ocolls, &ocarrier, &ocomp) != 16)
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{
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ipackets = opackets = 0;
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sscanf(p, "%lld %lld %lld %lld %lld" " %lld %lld %lld %lld %lld %lld",
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&ipackets, &ierrs, &idrop, &ififo, &iframe,
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&opackets, &oerrs, &odrop, &ofifo, &ocolls, &ocarrier);
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// for linux<2.0 fake packets as bytes (we only need relative values anyway)
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cur_ibytes = ipackets;
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cur_obytes = opackets;
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}
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break;
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}
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}
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fclose(fp);
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cur_ibytes += offset_ibytes;
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cur_obytes += offset_obytes;
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if (cur_ibytes < prev_ibytes)
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// har, har, overflow. Use the recent prev_ibytes value as offset this time
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cur_ibytes = offset_ibytes = prev_ibytes;
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if (cur_obytes < prev_obytes)
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// har, har, overflow. Use the recent prev_obytes value as offset this time
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cur_obytes = offset_obytes = prev_obytes;
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ni = (gint64)((cur_ibytes - prev_ibytes) / delta_t);
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no = (gint64)((cur_obytes - prev_obytes) / delta_t);
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if (in != NULL && out != NULL && tot != NULL)
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{
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*in = ni;
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*out = no;
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*tot = *in + *out;
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}
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prev_time.tv_sec = curr_time.tv_sec;
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prev_time.tv_usec = curr_time.tv_usec;
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prev_ibytes = cur_ibytes;
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prev_obytes = cur_obytes;
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if (first)
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{
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*in = *out = *tot = 0;
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first = FALSE;
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}
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}
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