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/*
* Dibbler - a portable DHCPv6
*
* authors: Tomasz Mrugalski <thomson@klub.com.pl>
* Marek Senderski <msend@o2.pl>
* changes: Michal Kowalczuk <michal@kowalczuk.eu>
*
* released under GNU GPL v2 only licence
*
*/
#include "SmartPtr.h"
#include "ClntMsgConfirm.h"
#include "OptDUID.h"
#include "ClntOptStatusCode.h"
#include "ClntOptIA_NA.h"
#include "DHCPConst.h"
#include "Logger.h"
// iaLst - contain all IA's to be checked (they have to be in the same link)
TClntMsgConfirm::TClntMsgConfirm(unsigned int iface,
List(TAddrIA) iaLst)
:TClntMsg(iface, SPtr<TIPv6Addr>(), CONFIRM_MSG) {
IRT = CNF_TIMEOUT;
MRT = CNF_MAX_RT;
MRC = 0;
MRD = CNF_MAX_RD;
//The client sets the "msg-type" field to CONFIRM. The client
//generates a transaction ID and inserts this value in the
//"transaction-id" field.
//The client MUST include a Client Identifier option to identify itself
//to the server.
Options.push_back(new TOptDUID(OPTION_CLIENTID, ClntCfgMgr().getDUID(), this ) );
//The client includes IA options for all of the IAs
//assigned to the interface for which the Confirm message is being
//sent. The IA options include all of the addresses the client
//currently has associated with those IAs. The client SHOULD set the
//T1 and T2 fields in any IA_NA options, and the preferred-lifetime and
//valid-lifetime fields in the IA Address options to 0, as the server
//will ignore these fields.
SPtr<TAddrIA> ia;
iaLst.first();
while(ia=iaLst.get())
Options.push_back(new TClntOptIA_NA(ia,true,this));
appendRequestedOptions();
appendElapsedOption();
appendAuthenticationOption();
IsDone = false;
send();
}
void TClntMsgConfirm::answer(SPtr<TClntMsg> reply)
{
SPtr <TClntOptStatusCode> status;
status = (Ptr*) reply->getOption(OPTION_STATUS_CODE);
if (!status) {
Log(Warning) << "Received malformed REPLY for CONFIRM: no status option." << LogEnd;
addrsRejected();
return;
}
switch (status->getCode() ) {
case STATUSCODE_SUCCESS:
addrsAccepted();
IsDone = true;
break;
case STATUSCODE_NOTONLINK:
addrsRejected();
IsDone = true;
break;
case STATUSCODE_UNSPECFAIL:
case STATUSCODE_NOADDRSAVAIL:
case STATUSCODE_NOBINDING:
case STATUSCODE_USEMULTICAST:
default:
Log(Warning) << "REPLY for CONFIRM received with invalid ("
<< status->getCode() << ") status code." << LogEnd;
break;
}
return;
}
void TClntMsgConfirm::addrsAccepted() {
SPtr<TAddrIA> ptrIA;
SPtr<TOpt> ptrOpt;
this->firstOption();
SPtr<TAddrAddr> ptrAddrAddr;
while ( ptrOpt = this->getOption() ) {
if (ptrOpt->getOptType()!=OPTION_IA_NA)
continue;
SPtr<TClntOptIA_NA> ptrOptIA = (Ptr*) ptrOpt;
ptrIA = ClntAddrMgr().getIA( ptrOptIA->getIAID() );
if (!ptrIA)
continue;
// Uncomment this line if you don't want RENEW to be sent after
// CONFIRM exchange is complete
ptrIA->setState(STATE_CONFIGURED);
// Once confirmed, this triggers the
ptrIA->setTimestamp( (uint32_t)time(NULL) - ptrIA->getT1() );
SPtr<TIfaceIface> ptrIface = ClntIfaceMgr().getIfaceByID(ptrIA->getIfindex());
if (!ptrIface)
continue;
ptrIA->firstAddr();
while (ptrAddrAddr = ptrIA->getAddr()) {
ptrIface->addAddr(ptrAddrAddr->get(),ptrAddrAddr->getPref(),
ptrAddrAddr->getValid(), ptrIface->getPrefixLength());
}
}
}
void TClntMsgConfirm::addrsRejected() {
SPtr<TAddrIA> ptrIA;
SPtr<TOpt> ptrOpt;
this->firstOption();
while ( ptrOpt = this->getOption() ) {
if (ptrOpt->getOptType()!=OPTION_IA_NA)
continue;
SPtr<TClntOptIA_NA> ptrOptIA = (Ptr*) ptrOpt;
ptrIA = ClntAddrMgr().getIA(ptrOptIA->getIAID());
if (!ptrIA)
continue;
// release all addrs
SPtr<TIfaceIface> ptrIface;
ptrIface = ClntIfaceMgr().getIfaceByID(ptrIA->getIfindex());
if (!ptrIface) {
Log(Crit) << "We have addresses assigned to non-existing interface."
"Help! Somebody stole an interface!" << LogEnd;
ptrIA->setState(STATE_NOTCONFIGURED);
return;
}
SPtr<TAddrAddr> ptrAddr;
ptrIA->firstAddr();
while (ptrAddr = ptrIA->getAddr() ) {
// remove addr from ...
ptrIface->delAddr( ptrAddr->get(), ptrIface->getPrefixLength() );
// ... and from DB
ptrIA->delAddr( ptrAddr->get() );
}
//not only the address should be rejected, but also the original IA should be deleted and using a new IA to process SOLICIT
SPtr<TClntCfgIA> ptrCfgIA = ClntCfgMgr().getIA(ptrOptIA->getIAID());
ptrCfgIA->reset();
ptrIA->reset();
}
ClntAddrMgr().firstIA();
}
void TClntMsgConfirm::doDuties()
{
//The first Confirm message from the client on the interface MUST be
//delayed by a random amount of time between 0 and CNF_MAX_DELAY.
/// @todo: MRD counters are a mess.
if (!MRD) {
// MRD reached. Nobody said that out addrs are faulty, so we suppose
// they are ok. Use them
Log(Info) << "MRD reached and there is no valid response for CONFIRM. "
<< "Assuming addresses are valid." << LogEnd;
addrsAccepted();
IsDone = true;
return;
}
send();
}
unsigned long TClntMsgConfirm::getTimeout()
{
return 0;
}
bool TClntMsgConfirm::check()
{
return 0;
}
std::string TClntMsgConfirm::getName() const {
return "CONFIRM";
}
TClntMsgConfirm::~TClntMsgConfirm() {
}
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