/**
*
* Tryies to find interface in list of inactive interfaces which becames
* ready. In positive case such an interface is moved back into standard list.
* Only first matching interface is processed.
*
* @returns Interface that becomes ready and has been moved out of inactive list.
* If no such interface exists, 0 will be returned.
*/
SPtr<TSrvCfgIface> TSrvCfgMgr::checkInactiveIfaces() {
if (!InactiveLst.count())
return 0;
SrvIfaceMgr().redetectIfaces();
SPtr<TSrvCfgIface> x;
SPtr<TIfaceIface> iface;
InactiveLst.first();
while (x = InactiveLst.get()) {
iface = SrvIfaceMgr().getIfaceByID(x->getID());
if (!iface) {
Log(Error) << "TSrvCfgMgr::checkInactiveIfaces(): " <<
"Unable to find interface with ifindex=" << x->getID() << LogEnd;
continue;
}
iface->firstLLAddress();
if (iface->flagUp() && iface->flagRunning() && iface->getLLAddress()) {
// check if its link-local address is not tentative
char tmp[64];
iface->firstLLAddress();
inet_ntop6(iface->getLLAddress(), tmp);
if (is_addr_tentative(iface->getName(), iface->getID(), tmp)==LOWLEVEL_TENTATIVE_YES) {
Log(Debug) << "Interface " << iface->getFullName() << " is up and running, but link-scope address " << tmp
<< " is currently tentative." << LogEnd;
continue;
}
makeInactiveIface(x->getID(), false); // move it to InactiveLst
return x;
}
}
return 0;
}
void TDHCPServer::run()
{
bool silent = false;
while ( (!isDone()) && (!SrvTransMgr().isDone()) ) {
if (serviceShutdown)
SrvTransMgr().shutdown();
SrvTransMgr().doDuties();
unsigned int timeout = SrvTransMgr().getTimeout();
if (timeout == 0) timeout = 1;
if (serviceShutdown) timeout = 0;
if (!silent)
Log(Notice) << "Accepting connections. Next event in " << timeout
<< " second(s)." << LogEnd;
#ifdef WIN32
// There's no easy way to break select under Windows, so just don't sleep for too long.
if (timeout>5) {
silent = true;
timeout = 5;
}
#endif
SPtr<TSrvMsg> msg=SrvIfaceMgr().select(timeout);
if (!msg)
continue;
silent = false;
int iface = msg->getIface();
SPtr<TIfaceIface> ptrIface;
ptrIface = SrvIfaceMgr().getIfaceByID(iface);
Log(Notice) << "Received " << msg->getName() << " on " << ptrIface->getName()
<< "/" << iface << hex << ",TransID=0x" << msg->getTransID()
<< dec << ", " << msg->countOption() << " opts:";
SPtr<TOpt> ptrOpt;
msg->firstOption();
while (ptrOpt = msg->getOption() )
Log(Cont) << " " << ptrOpt->getOptType();
Log(Cont) << ", " << msg->getRelayCount() << " relay(s)." << LogEnd;
if (SrvCfgMgr().stateless() && ( (msg->getType()!=INFORMATION_REQUEST_MSG) &&
(msg->getType()!=RELAY_FORW_MSG))) {
Log(Warning)
<< "Stateful configuration related message received while running in the stateless mode. Message ignored."
<< LogEnd;
continue;
}
SrvTransMgr().relayMsg(msg);
}
Log(Notice) << "Bye bye." << LogEnd;
}
TSrvCfgMgr::TSrvCfgMgr(const std::string cfgFile, const std::string xmlFile)
:TCfgMgr(), XmlFile(xmlFile), reconfigure(true)
{
setDefaults();
// load config file
if (!this->parseConfigFile(cfgFile)) {
IsDone = true;
return;
}
// load or create DUID
string duidFile = (string)SRVDUID_FILE;
if (!setDUID(duidFile, SrvIfaceMgr())) {
this->IsDone=true;
return;
}
this->dump();
#ifndef MOD_DISABLE_AUTH
AuthKeys = new KeyList();
#endif
IsDone = false;
}
bool TSrvCfgMgr::setupRelay(SPtr<TSrvCfgIface> cfgIface) {
SPtr<TIfaceIface> iface;
string name = cfgIface->getRelayName();
iface = SrvIfaceMgr().getIfaceByName(name);
if (!iface) {
Log(Crit) << "Underlaying interface for " << cfgIface->getName() << "/" << cfgIface->getID()
<< " with name " << name << " is missing." << LogEnd;
return false;
}
cfgIface->setRelayID(iface->getID());
if (!SrvIfaceMgr().setupRelay(cfgIface->getName(), cfgIface->getID(), iface->getID(), cfgIface->getRelayInterfaceID())) {
Log(Crit) << "Relay setup for " << cfgIface->getName() << "/" << cfgIface->getID() << " interface failed." << LogEnd;
return false;
}
return true;
}
TDHCPServer::TDHCPServer(string config)
{
serviceShutdown = 0;
srand(now());
this->IsDone = false;
TSrvIfaceMgr::instanceCreate(SRVIFACEMGR_FILE);
if ( SrvIfaceMgr().isDone() ) {
Log(Crit) << "Fatal error during IfaceMgr initialization." << LogEnd;
this->IsDone = true;
return;
}
SrvIfaceMgr().dump();
TSrvCfgMgr::instanceCreate(config, SRVCFGMGR_FILE);
if ( SrvCfgMgr().isDone() ) {
Log(Crit) << "Fatal error during CfgMgr initialization." << LogEnd;
this->IsDone = true;
return;
}
SrvCfgMgr().dump();
TSrvAddrMgr::instanceCreate(SRVADDRMGR_FILE, true /*always load DB*/ );
if ( SrvAddrMgr().isDone() ) {
Log(Crit) << "Fatal error during AddrMgr initialization." << LogEnd;
this->IsDone = true;
return;
}
SrvAddrMgr().dump();
TSrvTransMgr::instanceCreate(SRVTRANSMGR_FILE);
if ( SrvTransMgr().isDone() ) {
Log(Crit) << "Fatal error during TransMgr initialization." << LogEnd;
this->IsDone = true;
return;
}
SrvCfgMgr().setCounters();
SrvCfgMgr().dump();
SrvIfaceMgr().dump(); // dump it once more (important, if relay interfaces were added)
SrvTransMgr().dump();
}
bool TSrvCfgMgr::validateIface(SPtr<TSrvCfgIface> ptrIface)
{
bool dummyRelay = false;
SPtr<TSrvIfaceIface> iface = (Ptr*)SrvIfaceMgr().getIfaceByID(ptrIface->getID());
if (iface && ptrIface->isRelay() && iface->getRelayCnt())
dummyRelay = true;
if (ptrIface->countAddrClass() && stateless()) {
Log(Crit) << "Config problem: Interface " << ptrIface->getFullName()
<< ": Class definitions present, but stateless mode set." << LogEnd;
return false;
}
if (!ptrIface->countAddrClass() && !ptrIface->countPD()
&& !ptrIface->getTA() && !stateless()) {
if (!dummyRelay) {
Log(Crit) << "Config problem: Interface " << ptrIface->getName() << "/" << ptrIface->getID()
<< ": No class definitions (IA,TA or PD) present, but stateless mode not set." << LogEnd;
return false;
} else {
Log(Warning) << "Interface " << ptrIface->getFullName() << " has no addrs defined, working as cascade relay interface."
<< LogEnd;
}
}
if (ptrIface->supportFQDN() && !ptrIface->supportDNSServer()) {
Log(Crit) << "FQDN defined on the " << ptrIface->getFullName() << ", but no DNS servers defined."
<< " Please disable FQDN support or add DNS servers." << LogEnd;
return false;
}
SPtr<TSrvCfgAddrClass> ptrClass;
ptrIface->firstAddrClass();
while(ptrClass=ptrIface->getAddrClass()) {
if (!this->validateClass(ptrIface, ptrClass)) {
Log(Crit) << "Config problem: Interface " << ptrIface->getName() << "/" << ptrIface->getID()
<< ": Invalid class defined." << LogEnd;
return false;
}
}
return true;
}
/*
* Now parsed information should be placed in config manager
* in accordance with information provided by interface manager
*/
bool TSrvCfgMgr::matchParsedSystemInterfaces(SrvParser *parser) {
int cfgIfaceCnt;
cfgIfaceCnt = parser->SrvCfgIfaceLst.count();
Log(Debug) << cfgIfaceCnt << " interface(s) specified in " << SRVCONF_FILE << LogEnd;
SPtr<TSrvCfgIface> cfgIface;
SPtr<TIfaceIface> ifaceIface;
parser->SrvCfgIfaceLst.first();
while(cfgIface=parser->SrvCfgIfaceLst.get()) {
// for each interface from config file
// map deny and allow list
cfgIface->mapAllowDenyList(parser->SrvCfgClientClassLst);
// relay interface
if (cfgIface->isRelay()) {
cfgIface->setID(this->NextRelayID++);
if (!this->setupRelay(cfgIface)) {
return false;
}
this->addIface(cfgIface);
continue; // skip physical interface checking part
}
// physical interface
if (cfgIface->getID()==-1) {
// ID==-1 means that user referenced to interface by name
ifaceIface = SrvIfaceMgr().getIfaceByName(cfgIface->getName());
} else {
ifaceIface = SrvIfaceMgr().getIfaceByID(cfgIface->getID());
}
if (!ifaceIface) {
Log(Crit) << "Interface " << cfgIface->getFullName()
<< " is not present in the system or does not support IPv6."
<< LogEnd;
return false;
}
// Complete name and ID (one of them usually misses depending on
// identifier used in config file.
/// @todo: Client's class uses setIface{Name,ID}(). We should unite the
// method names.
cfgIface->setName(ifaceIface->getName());
cfgIface->setID(ifaceIface->getID());
// Check for link scope address presence
if (!ifaceIface->countLLAddress()) {
if (this->inactiveMode()) {
Log(Notice) << "Interface " << ifaceIface->getFullName()
<< " is not operational yet (does not have link scope address), skipping it for now." << LogEnd;
this->addIface(cfgIface);
this->makeInactiveIface(cfgIface->getID(), true); // move it to InactiveLst
continue;
}
Log(Crit) << "Interface " << ifaceIface->getName() << "/" << ifaceIface->getID()
<< " is down or doesn't have any link scope address." << LogEnd;
return false;
}
// Check if the interface is during bring-up phase (i.e. DAD procedure for link-local addr is not complete yet)
char tmp[64];
ifaceIface->firstLLAddress();
inet_ntop6(ifaceIface->getLLAddress(), tmp);
if (is_addr_tentative(ifaceIface->getName(), ifaceIface->getID(), tmp) == LOWLEVEL_TENTATIVE_YES) {
Log(Notice) << "Interface " << ifaceIface->getFullName() << " has link-scope address " << tmp
<< ", but it is currently tentative." << LogEnd;
if (this->inactiveMode()) {
Log(Notice) << "Interface " << ifaceIface->getFullName()
<< " is not operational yet (link-scope address is not ready), skipping it for now." << LogEnd;
addIface(cfgIface);
makeInactiveIface(cfgIface->getID(), true); // move it to InactiveLst
continue;
}
Log(Crit) << "Interface " << ifaceIface->getFullName()
<< " has tentative link-scope address (and inactive-mode is disabled)." << LogEnd;
return false;
}
this->addIface(cfgIface);
Log(Info) << "Interface " << cfgIface->getFullName()
<< " configuration has been loaded." << LogEnd;
}
return true;
}
