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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 only licence
*/
#include "HostRange.h"
#include "DHCPConst.h"
#include "Logger.h"
THostRange::THostRange( SPtr<TDUID> duidl, SPtr<TDUID> duidr)
:isAddrRange_(false), DUIDL_(duidl), DUIDR_(duidr), PrefixLength_(-1)
{
}
THostRange::THostRange( SPtr<TIPv6Addr> addrl, SPtr<TIPv6Addr> addrr)
:isAddrRange_(true), AddrL_(addrl), AddrR_(addrr), PrefixLength_(-1)
{
/// @todo: prefix length could be calculated automatically here
}
bool THostRange::in(SPtr<TDUID> duid, SPtr<TIPv6Addr> addr) const
{
if (isAddrRange_)
{
if ((*addr<=*AddrL_)&&(*AddrL_<=*addr)) return true;
if ((*addr<=*AddrR_)&&(*AddrR_<=*addr)) return true;
if (*addr<=*AddrL_) return false;
if (*AddrR_<=*addr) return false;
}
else
{
if (!duid)
return false;
if (*duid <= *DUIDL_) return false;
if (*DUIDR_ <= *duid) return false;
return true;
}
return false; // should not happen
}
bool THostRange::in(SPtr<TIPv6Addr> addr) const
{
if (isAddrRange_)
{
if ((*addr<=*AddrL_)&&(*AddrL_<=*addr)) return true;
if ((*addr<=*AddrR_)&&(*AddrR_<=*addr)) return true;
if (*addr<=*AddrL_) return false;
if (*AddrR_<=*addr) return false;
return true;
} else
return false;
}
bool THostRange::in(SPtr<TDUID> duid) const
{
if (isAddrRange_)
return false;
else
{
if (*duid<=*DUIDL_) return false;
if (*DUIDR_<=*duid) return false;
}
return true;
}
SPtr<TIPv6Addr> THostRange::getRandomAddr() const {
if(isAddrRange_)
{
SPtr<TIPv6Addr> diff = new TIPv6Addr();
*diff=(*AddrR_)-(*AddrL_);
--(*diff);
*diff=*diff+*AddrL_;
return diff;
}
else
return SPtr<TIPv6Addr>();
}
SPtr<TIPv6Addr> THostRange::getRandomPrefix() const {
if(isAddrRange_)
{
SPtr<TIPv6Addr> diff = new TIPv6Addr();
*diff=(*AddrR_)-(*AddrL_);
--(*diff);
*diff=*diff+*AddrL_;
return diff;
}
else
return SPtr<TIPv6Addr>();
}
unsigned long THostRange::rangeCount() const {
if(isAddrRange_) {
SPtr<TIPv6Addr> diff(new TIPv6Addr());
*diff=(*AddrR_)-(*AddrL_);
char *addr=diff->getAddr();
for(int i=0;i<12;i++)
{
if (addr[i]>0) return DHCPV6_INFINITY;
}
unsigned long retVal = addr[12]*256*256*256 + addr[13]*256*256 + addr[14]*256 + addr[15];
if (retVal!=DHCPV6_INFINITY)
return retVal + 1;
return retVal;
}
else
return 0;
}
int THostRange::getPrefixLength() const {
return PrefixLength_;
}
void THostRange::setPrefixLength(int len) {
PrefixLength_ = len;
}
THostRange::~THostRange(void) {
}
SPtr<TIPv6Addr> THostRange::getAddrL() const {
return AddrL_;
}
SPtr<TIPv6Addr> THostRange::getAddrR() const {
return AddrR_;
}
void THostRange::truncate(int minPrefix, int maxPrefix) {
if (!isAddrRange_) {
Log(Error) << "Unable to truncace this pool: this is DUID pool, not address pool." << LogEnd;
return;
}
// if the L and R addresses are not at the prefix boundaries, then we are
// pretty f%%%ed up
AddrL_->truncate(minPrefix, maxPrefix);
AddrR_->truncate(minPrefix, maxPrefix);
}
std::ostream& operator<<(std::ostream& out, THostRange& range)
{
if (range.isAddrRange_) {
// address range
if(range.AddrL_&&range.AddrR_)
out << " <range type=\"addr\" min=\"" << *range.AddrL_
<< "\" max=\"" << *range.AddrR_ << "\"/>" << std::endl;
} else {
// DUID range
if (range.DUIDL_&&range.DUIDR_) {
out << " <range type=\"duid\">" << std::endl
<< " " << *range.DUIDL_
<< " " << *range.DUIDR_
<< " </range>" << std::endl;
}
}
return out;
}
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