NetworkInterface.cpp

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/* 
 * Confdump-Agent - Dump static and runtime system configuration
 * Copyright (C) 2009-2012  Straton IT, SAS
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

extern "C"
{
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <net/if.h>
}

#include <istream>
#include <iostream>
#include <sstream>
#include <iomanip>
#include <map>

#include "QString"
#include "boost/shared_ptr.hpp"
#include "boost/bind.hpp"

#include "Confdump/System/LinuxDumper.hpp"
#include "Confdump/System/Linux/NetworkInterface.hpp"

namespace Confdump
{

namespace System
{

namespace Linux
{

    NetworkInterface::NetworkInterface(QString name)
     : name_( name )
    {
        readMacAddress();
    }

    NetworkInterface::~NetworkInterface()
    {
    }

    void NetworkInterface::readMacAddress()
    {
        using namespace boost::system;

        int fd = -1;
        boost::shared_ptr<void> fdGuard( static_cast<void*>( 0 ), boost::bind( close, fd ) );
        fd = socket( AF_INET, SOCK_DGRAM, 0 ); // We need any socket as ioctl anchor
        if ( fd == -1 )
            throw system_error( errno, system_category, "socket( AF_INET, SOCK_DGRAM, 0 )" );

        struct ifreq ifr;
        ifr.ifr_addr.sa_family = AF_INET;
        strncpy( ifr.ifr_name, name_.toStdString().c_str(), IFNAMSIZ - 1 );
        if ( ioctl( fd, SIOCGIFHWADDR, &ifr ) == -1 )
            throw system_error( errno, system_category, "ioctl( SIOCGIFHWADDR )" );

        std::ostringstream oss;
        oss << std::hex << std::setw( 2 ) << std::setfill( '0' ) << (ifr.ifr_hwaddr.sa_data[0]&0xff);
        for ( int i = 1; i < 6; ++i )
            oss << std::setw( 1 ) << ":" << std::setw( 2 ) << (ifr.ifr_hwaddr.sa_data[i]&0xff);

        macAddress_ = QString::fromStdString( oss.str() );
    }


}
}
}