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/*
* Dibbler - a portable DHCPv6
*
* authors: Tomasz Mrugalski <thomson@klub.com.pl>
* Marek Senderski <msend@o2.pl>
*
* released under GNU GPL v2 licence
*
* $Id: OptInteger.cpp,v 1.3 2007-05-01 12:03:13 thomson Exp $
*
*/
#include <stdlib.h>
#include <iostream>
#ifdef LINUX
#include <netinet/in.h>
#endif
#ifdef WIN32
#include <winsock2.h>
#endif
#include "OptInteger.h"
#include "DHCPConst.h"
using namespace std;
TOptInteger::TOptInteger(int type, unsigned int len, unsigned int value, TMsg* parent)
:TOpt(type, parent) {
this->Value = value;
this->Valid = true;
this->Len = len;
}
TOptInteger::TOptInteger(int type, unsigned int len, char *&buf, int &bufsize, TMsg* parent)
:TOpt(type, parent)
{
if ((unsigned int)bufsize<len) {
this->Valid = false;
return;
}
this->Len = len;
this->Valid = true;
switch (len) {
case 0:
this->Value = 0;
break;
case 1:
this->Value = (unsigned char)(*buf);
break;
case 2:
this->Value = ntohs(*(short int*)buf);
break;
case 3:
this->Value = ((long)buf[0])<<16 | ((long)buf[1])<<8 | (long)buf[2]; /* no ntoh3, eh? */
break;
case 4:
this->Value = ntohl(*(int*)buf);
break;
default:
this->Valid = false;
return;
}
buf += this->Len;
bufsize -= this->Len;
}
char * TOptInteger::storeSelf(char* buf)
{
*(short*)buf = htons(OptType);
buf+=2;
*(short*)buf = htons(this->Len);
buf+=2;
switch (this->Len) {
case 0:
break;
case 1:
*buf = (char)this->Value;
break;
case 2:
*(short int*)buf = htons(this->Value);
break;
case 3:
{
int tmp = this->Value;
buf[0] = tmp%256; tmp = tmp/256;
buf[1] = tmp%256; tmp = tmp/256;
buf[2] = tmp%256; tmp = tmp/256;
break;
}
case 4:
*(int*)buf = htonl(this->Value);
break;
default:
/* this should never happen */
break;
}
return buf+this->Len;
}
int TOptInteger::getSize() {
return 4 /*option header length*/ + this->Len;
}
unsigned int TOptInteger::getValue() {
return this->Value;
}
bool TOptInteger::isValid() {
return this->Valid;
}
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