/*
* Method checks whether client is supported and assigned addresses from any class
*/
bool TSrvCfgMgr::isClntSupported(SPtr<TDUID> duid, SPtr<TIPv6Addr> clntAddr, int iface, SPtr<TSrvMsg> msg)
{
SPtr<TSrvCfgIface> ptrIface;
firstIface();
while((ptrIface=getIface())&&(ptrIface->getID()!=iface)) ;
/** @todo: reject-client and accept-only does not work in stateless mode */
if (this->stateless())
return true;
int classCnt = 0;
if (ptrIface)
{
SPtr<TSrvCfgAddrClass> ptrClass;
ptrIface->firstAddrClass();
while(ptrClass=ptrIface->getAddrClass()) {
if (ptrClass->clntSupported(duid,clntAddr,msg))
return true;
classCnt++;
}
}
if (!classCnt) {
Log(Warning) << "There are no address class defined on the " << ptrIface->getFullName()
<< ". Maybe you are trying to configure clients on cascade relay interface? "
<< "If that is so, please define separate class on this interface, too." << LogEnd;
}
return false;
}
bool TSrvCfgMgr::validateConfig() {
SPtr<TSrvCfgIface> ptrIface;
if (0 == (this->countIface() + this->inactiveIfacesCnt())) {
Log(Crit) << "Config problem: No interface defined." << LogEnd;
return false;
}
firstIface();
while(ptrIface=getIface()) {
if (!this->validateIface(ptrIface))
return false;
}
return true;
}
bool TClntIfaceMgr::modifyPrefix(int iface, SPtr<TIPv6Addr> prefix, int prefixLen,
unsigned int pref, unsigned int valid,
PrefixModifyMode mode)
{
SPtr<TClntIfaceIface> ptrIface = (Ptr*)getIfaceByID(iface);
if (!ptrIface) {
Log(Error) << "Unable to find interface with ifindex=" << iface
<< ", prefix add/modify operation failed." << LogEnd;
return false;
}
string action;
int conf = 0; // number of successfully configured prefixes
int status = -1;
switch (mode) {
case PREFIX_MODIFY_ADD:
action = "Adding";
break;
case PREFIX_MODIFY_UPDATE:
action = "Updating";
break;
case PREFIX_MODIFY_DEL:
action = "Deleting";
break;
}
// option: split this prefix and add it to all interfaces
Log(Notice) << "PD: " << action << " prefix " << prefix->getPlain() << "/" << (int)prefixLen
<< " to all interfaces (prefix will be split to /"
<< int(prefixLen+8) << " prefixes if necessary)." << LogEnd;
if (prefixLen>120) {
Log(Error) << "PD: Unable to perform prefix operation: prefix /" << prefixLen
<< " can't be split. At least /120 prefix is required." << LogEnd;
return false;
}
// get a list of interfaces that we will assign prefixes to
TIfaceIfaceLst ifaceLst;
vector<string> ifaceNames = ClntCfgMgr().getDownlinkPrefixIfaces();
for (vector<string>::const_iterator name = ifaceNames.begin(); name != ifaceNames.end(); ++name) {
SPtr<TIfaceIface> x = getIfaceByName(*name);
if (x)
ifaceLst.push_back(x);
else
Log(Warning) << "Interface " << *name << " specified in downlink-prefix-ifaces is missing." << LogEnd;
}
if (ifaceLst.size() == 0) {
SPtr<TIfaceIface> x;
firstIface();
while ( x = (Ptr*)getIface() ) {
if (x->getID() == ptrIface->getID()) {
Log(Debug) << "PD: Interface " << x->getFullName()
<< " is the interface, where prefix has been obtained, skipping." << LogEnd;
continue;
}
// for each interface present in the system...
if (!x->flagUp()) {
Log(Debug) << "PD: Interface " << x->getFullName() << " is down, ignoring." << LogEnd;
continue;
}
if (!x->flagRunning()) {
Log(Debug) << "PD: Interface " << x->getFullName()
<< " has flag RUNNING not set, ignoring." << LogEnd;
continue;
}
if (!x->flagMulticast()) {
Log(Debug) << "PD: Interface " << x->getFullName()
<< " is not multicast capable, ignoring." << LogEnd;
continue;
}
if ( !(x->getMacLen() > 5) ) {
Log(Debug) << "PD: Interface " << x->getFullName()
<< " has MAC address length " << x->getMacLen()
<< " (6 or more required), ignoring." << LogEnd;
continue;
}
x->firstLLAddress();
if (!x->getLLAddress()) {
Log(Debug) << "PD: Interface " << x->getFullName()
<< " has no link-local address, ignoring. (Disconnected? Not associated? No-link?)" << LogEnd;
continue;
}
ifaceLst.push_back(x);
}
}
Log(Info) << "PD: Using " << ifaceLst.size() << " suitable interface(s):";
TIfaceIfaceLst::const_iterator i;
for (TIfaceIfaceLst::const_iterator i=ifaceLst.begin(); i!=ifaceLst.end(); ++i) {
Log(Cont) << (*i)->getName() << " ";
}
Log(Cont) << LogEnd;
if (ifaceLst.size() == 0) {
Log(Warning) << "Suitable interfaces not found. Delegated prefix not split." << LogEnd;
return true;
}
for (TIfaceIfaceLst::const_iterator i=ifaceLst.begin(); i!=ifaceLst.end(); ++i) {
char buf[16];
int subprefixLen;
memmove(buf, prefix->getAddr(), 16);
if (ifaceLst.size() == 1) {
// just one interface - use delegated prefix as is
subprefixLen = prefixLen;
} else if (ifaceLst.size()<256) {
subprefixLen = prefixLen + 8;
int offset = prefixLen/8;
if (prefixLen%8 == 0) {
// that's easy, just put ID in the next octet
buf[offset] = (*i)->getID();
} else {
// here's fun
uint16_t existing = readUint16(buf+offset);
uint16_t bitmask = 0xff00;
uint16_t infixmask = ((uint8_t)(*i)->getID()) << 8;
bitmask = bitmask >> (prefixLen%8);
infixmask = infixmask >> (prefixLen%8);
// clear out if there is anything there, i.e. server assigned prefix
// with garbage in host section
existing = existing & (~bitmask);
existing = existing | (bitmask & infixmask);
writeUint16(buf+offset, existing);
}
} else {
