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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 "Logger.h"
#include "RelMsg.h"
#include "RelMsgRelayForw.h"
// --- options ---
TRelMsgRelayForw::TRelMsgRelayForw(int iface, SPtr<TIPv6Addr> addr, char * data, int dataLen)
:TRelMsg(iface, addr, 0, 0) // 0,0 - avoid decoding anything
{
this->MsgType = RELAY_FORW_MSG;
if (dataLen < MIN_RELAYFORW_LEN) {
Log(Warning) << "Truncated RELAY_FORW message received." << LogEnd;
return;
}
this->MsgType = data[0]; // ignored
this->HopCount = data[1];
if (this->HopCount >= HOP_COUNT_LIMIT) {
Log(Warning) << "RelayForw with hopLimit " << this->HopCount << " received (max. allowed is " << HOP_COUNT_LIMIT
<< ". Message dropped." << LogEnd;
return;
}
this->LinkAddr = new TIPv6Addr(data+2, false);
this->PeerAddr = new TIPv6Addr(data+18, false);
Log(Debug) << "Relaying RELAY_FORW with link:" << LinkAddr->getPlain() << ", peer:" << PeerAddr->getPlain()
<< " and hop count:" << this->HopCount << "." << LogEnd;
data += 34;
dataLen -= 34;
// decode options
this->decodeOpts(data, dataLen);
}
bool TRelMsgRelayForw::check() {
return true;
}
std::string TRelMsgRelayForw::getName() const {
return "RELAY_FORW";
}
int TRelMsgRelayForw::storeSelf(char * buffer)
{
char *start = buffer;
*(buffer++) = (char)this->MsgType;
*(buffer++) = (char)this->HopCount;
this->LinkAddr->storeSelf(buffer);
buffer += 16;
this->PeerAddr->storeSelf(buffer);
buffer += 16;
TOptList::iterator option;
for (option=Options.begin(); option!=Options.end(); ++option) {
(*option)->storeSelf(buffer);
buffer += (*option)->getSize();
}
return buffer-start;
}
int TRelMsgRelayForw::getSize() {
int pktsize=0;
TOptList::iterator opt;
for (opt = Options.begin(); opt!=Options.end(); ++opt)
{
pktsize += (*opt)->getSize();
}
return pktsize + MIN_RELAYFORW_LEN;
}
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