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/***************************************************************************
* Copyright (C) 2003 by Hans Karlsson *
* karlsson.h@home.se *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#ifdef __FreeBSD__
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/socket.h>
#include <net/route.h>
#endif
#include "networksensor.h"
NetworkSensor::NetworkSensor( QString dev, int interval ):Sensor( interval )
{
device = dev.lower();
#ifdef __FreeBSD__
/* Determine number of interfaces */
u_int n = 0;
size_t nlen = 0;
nlen = sizeof(n);
sysctlbyname("net.link.generic.system.ifcount", &n, &nlen, NULL, 0);
size_t if_miblen = 0;
if_miblen = sizeof(if_mib);
static int name[] = { CTL_NET,
PF_LINK,
NETLINK_GENERIC,
IFMIB_IFDATA,
0,
IFDATA_GENERAL };
/*
If the device was defined by the theme, find the right devicenumber.
If not, use the device that holds the default route.
*/
if_number = -1;
int if_gw = -1;
for (int i = 1; i <= n; ++i) {
name[4] = i;
/* Get data for iface-number i */
sysctl(name, 6, (void*)&if_mib, (size_t*)&if_miblen, (void*)NULL, (size_t)0);
/* We found the right interface? */
if (QString(if_mib.ifmd_name) == device) {
if_number = i;
break;
}
/* Does the interface hold the default route? */
if ( if_mib.ifmd_flags & RTF_GATEWAY )
if_gw = i;
}
if ((if_number == -1) && (if_gw != -1))
if_number = if_gw;
#else
if( device.isEmpty() )
device = "eth0";
#endif
getInOutBytes(receivedBytes,transmittedBytes);
netTimer.start();
}
NetworkSensor::~NetworkSensor()
{
}
void NetworkSensor::getInOutBytes ( unsigned long &in,unsigned long &out) const
{
#ifdef __FreeBSD__
if (if_number != -1) {
size_t if_miblen = 0;
if_miblen = sizeof(if_mib);
int name[] = { CTL_NET,
PF_LINK,
NETLINK_GENERIC,
IFMIB_IFDATA,
if_number,
IFDATA_GENERAL };
sysctl(name, 6, (void*)&if_mib, (size_t*)&if_miblen, (void*)NULL, (size_t)0);
in = if_mib.ifmd_data.ifi_ibytes;
out = if_mib.ifmd_data.ifi_obytes;
}
else {
in = 0;
out = 0;
}
#else
QFile file("/proc/net/dev");
QString line;
if ( file.open(IO_ReadOnly | IO_Translate) )
{
QTextStream t( &file ); // use a text stream
line = t.readLine();
while(line !=0 && !line.contains(device))
{
line = t.readLine();
}
if ( line.contains( device ) )
{
QRegExp rx( "\\W+"+device+":\\D*(\\d+)(?:\\D+\\d+){7}\\D+(\\d+)", false);
rx.search(line);
in = rx.cap(1).toULong();
out = rx.cap(2).toULong();
}
else
{
qDebug("Network sensor: can not find %s", device.ascii());
in = 0;
out = 0;
}
file.close();
}
#endif
}
void NetworkSensor::update()
{
SensorParams *sp;
Meter *meter;
QObjectListIt it( *objList );
QString format;
int decimals;
unsigned long inB, outB;
const double delay = (double) netTimer.elapsed(); // msec elapsed since last update
getInOutBytes( inB, outB );
netTimer.restart();
while( it != 0 )
{
sp = (SensorParams*)(*it);
meter = sp->getMeter();
format = sp->getParam( "FORMAT" );
decimals = ( sp->getParam( "DECIMALS" ) ).toInt();
if (format.length() == 0 )
{
format = "%in";
}
format.replace( QRegExp("%inkb", false), QString::number( ((inB - receivedBytes)*8)/delay, 'f', decimals ) );
format.replace( QRegExp("%in", false), QString::number( (inB - receivedBytes)/delay, 'f', decimals ) );
format.replace( QRegExp("%outkb", false), QString::number( ((outB - transmittedBytes)*8)/delay, 'f', decimals ) );
format.replace( QRegExp("%out", false), QString::number( (outB - transmittedBytes)/delay, 'f', decimals ) );
meter->setValue( format );
++it;
}
receivedBytes = inB;
transmittedBytes = outB;
}
#include "networksensor.moc"
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