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/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "devreader-linux-sys.h"
#include <fstream>
#include <string>
#include <list>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
using namespace std;
DevReaderLinuxSys::DevReaderLinuxSys(const string& deviceName)
: DevReader(deviceName)
{
}
DevReaderLinuxSys::~DevReaderLinuxSys()
{
}
bool DevReaderLinuxSys::isAvailable()
{
struct stat sysStat;
if(stat("/sys/class/net", &sysStat) < 0 || ! S_ISDIR(sysStat.st_mode))
return false;
return true;
}
list<string> DevReaderLinuxSys::findAllDevices()
{
list<string> interfaceNames;
DIR* sysDir = opendir("/sys/class/net");
struct dirent* sysDirEntry = 0;
if(!sysDir)
return interfaceNames;
while((sysDirEntry = readdir(sysDir)))
{
string interfaceName(sysDirEntry->d_name);
if(interfaceName[0] == '.')
continue;
interfaceNames.push_back(interfaceName);
}
closedir(sysDir);
return interfaceNames;
}
void DevReaderLinuxSys::readFromDevice(DataFrame& dataFrame)
{
string devPath = "/sys/class/net/";
devPath += m_deviceName;
struct stat sysStat;
if(stat(devPath.c_str(), &sysStat) < 0 || ! S_ISDIR(sysStat.st_mode))
return;
dataFrame.setTotalDataIn(readULongSysEntry("statistics/rx_bytes"));
dataFrame.setTotalDataOut(readULongSysEntry("statistics/tx_bytes"));
dataFrame.setTotalPacketsIn(readULongSysEntry("statistics/rx_packets"));
dataFrame.setTotalPacketsOut(readULongSysEntry("statistics/tx_packets"));
dataFrame.setTotalErrorsIn(readULongSysEntry("statistics/rx_errors"));
dataFrame.setTotalErrorsOut(readULongSysEntry("statistics/tx_errors"));
dataFrame.setTotalDropsIn(readULongSysEntry("statistics/rx_dropped"));
dataFrame.setTotalDropsOut(readULongSysEntry("statistics/tx_dropped"));
dataFrame.setValid(true);
}
unsigned long long DevReaderLinuxSys::readULongSysEntry(const string& entry)
{
string sysEntryPath = "/sys/class/net/";
sysEntryPath += m_deviceName;
sysEntryPath += '/';
sysEntryPath += entry;
ifstream sysEntry(sysEntryPath.c_str());
if(!sysEntry.is_open())
return 0;
unsigned long long num = 0;
sysEntry >> num;
if(sysEntry.fail())
return 0;
return num;
}
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