macdhcp.cpp

linux下更改网卡mac地址

#include "macdhcp.h"

macdhcp::macdhcp()
{
     ifc.ifc_len = sizeof buf;
     ifc.ifc_buf = (caddr_t) buf;
     if( !(fd = socket (AF_INET, SOCK_DGRAM, 0)) ) {
       qWarning( "DEBUG: can't open socket" );
     }
}

macdhcp::~macdhcp()
{
  //close(fd);
	
}

int macdhcp::getIfNum()
{
     if (!ioctl (fd, SIOCGIFCONF, (char *) &ifc)) {
       interfaceNum = ifc.ifc_len / sizeof (struct ifreq);
       if( interfaceNum > MAXINTERFACES ){
		 interfaceNum = MAXINTERFACES;
		 printf( "interface is too much, we'll list max %d!\n", MAXINTERFACES );
       }
       return interfaceNum;
     }
     return 0;
}

QString macdhcp::getMacAddress(int ifnumber)
{
     QString tempString;
     if (!(ioctl (fd, SIOCGIFHWADDR, (char *) &buf[ifnumber]))){
       tempString.sprintf( "%02x-%02x-%02x-%02x-%02x-%02x",
			   (unsigned char)buf[ifnumber].ifr_hwaddr.sa_data[0],
			   (unsigned char)buf[ifnumber].ifr_hwaddr.sa_data[1],
			   (unsigned char)buf[ifnumber].ifr_hwaddr.sa_data[2],
			   (unsigned char)buf[ifnumber].ifr_hwaddr.sa_data[3],
			   (unsigned char)buf[ifnumber].ifr_hwaddr.sa_data[4],
			   (unsigned char)buf[ifnumber].ifr_hwaddr.sa_data[5]);
     }	   
     else{
       tempString.sprintf( "192.168.0.120" );
	   setIPAddress(ifnumber, tempString);
     }
     return tempString;
}
QString macdhcp::getNetwork()
{
    QString tempString,SN;
	unsigned int network=intIp&intNetmask;
    SN = tempString.sprintf( "%d.",network&0xff );
    SN += tempString.sprintf( "%d.",network>>8&0xff );
    SN += tempString.sprintf( "%d.",network>>16&0xff );
    SN += tempString.sprintf( "%d",network>>24&0xff );
	return SN;

}

QString macdhcp::getBroadcast()
{
    QString tempString,SB;
	unsigned int broadcast=intIp&intNetmask;
    SB = tempString.sprintf( "%d.",broadcast&0xff );
    SB += tempString.sprintf( "%d.",broadcast>>8&0xff );
    SB += tempString.sprintf( "%d.",broadcast>>16&0xff );
    SB += tempString.sprintf( "%d",255 );
	return SB;

}


QString macdhcp::getNetMask(int ifnumber)
{
    QString tempString, netmask;
     unsigned int templong;
     if (!(ioctl (fd, SIOCGIFNETMASK, (char *) &buf[ifnumber]))){
       intNetmask=templong = (unsigned int)((struct sockaddr_in*)(&buf[ifnumber].ifr_netmask))->sin_addr.s_addr;
       netmask = tempString.sprintf( "%d.",templong&0xff );
       netmask += tempString.sprintf( "%d.",templong>>8&0xff );
       netmask += tempString.sprintf( "%d.",templong>>16&0xff );
       netmask += tempString.sprintf( "%d",templong>>24&0xff );
     }
     else{
	   intNetmask=0xffffff00;	
	   netmask.sprintf( "255.255.255.0" );
	   system("ifconfig eth0 netmask 255.255.255.0 up");
	   setNetMask(ifnumber,netmask);	
     }
     return netmask;	

}




QString macdhcp::setNetMask(int ifnumber, QString netmask)
{
     QString tempString;
     int tempPosition;
     tempString.sprintf( "ifconfig " + getIfName(ifnumber) + " netmask " + netmask );
     tempPosition = tempString.find( '\n', 0, TRUE );
     if( tempPosition > 0 ){
       tempString.remove( tempPosition, 1 );
     }
     system( tempString );
     tempString = getNetMask( ifnumber );
     return tempString;
}

QString macdhcp::getIPAddress(int ifnumber)
{
     QString tempString, ipAddress;
     unsigned int templong;
     if (!(ioctl (fd, SIOCGIFADDR, (char *) &buf[ifnumber]))){
       intIp=templong = (unsigned int)((struct sockaddr_in*)(&buf[ifnumber].ifr_addr))->sin_addr.s_addr;
       ipAddress = tempString.sprintf( "%d.",templong&0xff );
       ipAddress += tempString.sprintf( "%d.",templong>>8&0xff );
       ipAddress += tempString.sprintf( "%d.",templong>>16&0xff );
       ipAddress += tempString.sprintf( "%d",templong>>24&0xff );
     }
     else{
	   intIp=0xc0a80078;
       ipAddress.sprintf( "192.168.0.120" );
	   system("ifconfig eth0 192.168.0.120 up");
	   setIPAddress(ifnumber,ipAddress);	
     }
     return ipAddress;
}

QString macdhcp::getDNS()
{
     QString tempString;
     char temp[100], temp1[20],temp2[20];
     FILE *fp;
     tempString.sprintf( "NA" );
     if( (fp = fopen( "/etc/resolv.conf", "r" ) ) >= 0 ){
 	    fgets( temp, 100, fp );
 	    do{
		 sscanf( temp, "%s %s", temp1, temp2 );
	 	 if( strcmp( temp1, "nameserver" ) == 0 ){
	   		tempString.sprintf( "%s", temp2 );
		   break;
		 }
    	}while( fgets( temp, 100, fp ) != '\0' );
     }
     fclose( fp );
	 if(tempString.find("NA")==-1)
     	tempString=checkIP(tempString);
	return tempString;
}

QString macdhcp::getGateway()
{
	QString tempString,gatewayString;
	QHostAddress GWAddress;
	bool ok;
	char temp[100], temp1[10],temp2[10],temp3[10],temp4[10];
	long gateway;
	FILE *fp;
	tempString.sprintf( "NA" );
	if( (fp = fopen( "/proc/net/route", "r" ) ) >= 0 ){
	  fgets(temp, 100, fp );
	  while( fgets( temp, 100, fp ) != '\0' ){
	    memset( temp1, 0, 10 );
	    memset( temp2, 0, 10 );
	    memset( temp3, 0, 10 );
	    memset( temp4, 0, 10 );
	    sscanf( temp, "%s %s %s %s", temp1, temp2, temp3, temp4 );
	    if( strcmp( temp3, "00000000" ) != 0 && strcmp( temp2, "" ) != 0 ){
	      gatewayString.sprintf( "%s", temp3 );
	      gateway = gatewayString.toUInt( &ok, 16 );
	      gateway = ntohl( gateway );
	      GWAddress.setAddress( gateway );
	      tempString = GWAddress.toString();		
	      break;
	    }
	  }
	}
	fclose( fp );
	if(tempString.find("NA")==-1)
		tempString=checkIP(tempString);
	return tempString;
}

QString macdhcp::getIfName(int ifnumber)
{
     QString tempString;
     tempString.sprintf("%s\n", buf[ifnumber].ifr_name);
     return tempString;
}

QString macdhcp::setMacAddress(int ifnumber, QString macaddress)
{
     QString tempString;
	 macaddress.replace( QRegExp("-"), ":" );
     tempString.sprintf( "ifconfig eth0 down \n ifconfig eth0 hw ether "+ macaddress + "\n ifconfig eth0 up\n" );
     system( tempString );
     tempString = getMacAddress( ifnumber );
	 tempString.replace( QRegExp(":"), "-" );
     return tempString;
}

QString macdhcp::setIPAddress(int ifnumber, QString ipaddress)
{
     QString tempString;
     int tempPosition;
     tempString.sprintf( "ifconfig " + getIfName(ifnumber) + " " + ipaddress );
     tempPosition = tempString.find( '\n', 0, TRUE );
     if( tempPosition > 0 ){
       tempString.remove( tempPosition, 1 );
     }
     system( tempString );
     tempString = getIPAddress( ifnumber );
     return tempString;
}

QString macdhcp::checkIP(QString IP)
{
	int i,prePos=0,curPos;
	int IPVal;
	bool valideIP=TRUE,OK;
	QString oIP;
	for(i=0;i<3;i++)
	{
		curPos=IP.find(".",prePos);
		if(curPos!=-1)
		{
			oIP=IP.mid(prePos,curPos-prePos);
			IPVal=oIP.toInt(&OK);
			if(IPVal<0||IPVal>255||!OK)
			{
				valideIP=FALSE;
				break;
			}
			else
				prePos=curPos+1;
		}
		else
		{
			valideIP=FALSE;
			break;
		}
	}
		if(valideIP)
		{
			curPos=IP.length();
			if(curPos>prePos)
			{
				oIP=IP.mid(prePos,curPos-prePos);
				IPVal=oIP.toInt(&OK);
				if(IPVal<0||IPVal>255||!OK)
					valideIP=FALSE;
			}
			else
				valideIP=FALSE;
		}
	if(valideIP)
		return IP;
	else
		return QString("192.168.0.120");
}

QString macdhcp::setDNS(QString dns)
{
     QString tempString;
     char temp[100], temp1[20],temp2[20];
     FILE *fp;
	 if(dns.length()==0)
		dns="NA";
	 if(dns.find("NA")==-1&&dns.length()!=0)
		 dns=checkIP(dns);	
	 qWarning(dns);
     if( (fp = fopen( "/etc/resolv.conf", "w" ) ) >= 0 )
	 {	
		if(dns.find("NA")==-1)
		{
	     dns = "nameserver "+dns;
	     fputs( dns.data(), fp );
		}
	     fclose(fp);
	     tempString.sprintf( "/etc/rc.d/init.d/named restart\n" );
	     system( tempString );
	}
    tempString = getDNS();
    if(tempString.find("NA")==-1&&tempString.length()!=0)
	   	tempString=checkIP(tempString);
	return tempString;
}

QString macdhcp::setGateway(QString gateway)
{
     QString tempString;
     tempString.sprintf( "route del default\n" );
     system( tempString );
	 if(gateway.find("NA")==-1&&gateway.length()!=0)
	 {
	 	checkIP(gateway);
     	tempString.sprintf( "route add default gw " + gateway + "\n" );
     	system( tempString );
     	tempString = getGateway();
		tempString=checkIP(tempString);
	 }
	 else
	 tempString="NA";
     return tempString;
}