void
DataManager::handleVerifiedDataObject(DataObjectRef& dObj)
{
if (!dObj) {
HAGGLE_ERR ("Handle verified object received null object.\n");
return;
}
if(networkCodingConfiguration->isNetworkCodingEnabled(dObj,NULL) &&
!networkCodingConfiguration->isForwardingEnabled()) {
if(networkCodingDataObjectUtility->isNetworkCodedDataObject(dObj)) {
if (dObj->isDuplicate()) {
HAGGLE_DBG("Data object %s is a duplicate! Not generating DATAOBJECT_NEW event\n", dObj->getIdStr());
} else {
kernel->addEvent(new Event(EVENT_TYPE_DATAOBJECT_NEW, dObj));
return;
}
}
}
if(fragmentationConfiguration->isFragmentationEnabled(dObj,NULL) &&
!fragmentationConfiguration->isForwardingEnabled()) {
if(fragmentationDataObjectUtility->isFragmentationDataObject(dObj)) {
if (dObj->isDuplicate()) {
HAGGLE_DBG("Data object %s is a duplicate! Not generating DATAOBJECT_NEW event\n", dObj->getIdStr());
} else {
kernel->addEvent(new Event(EVENT_TYPE_DATAOBJECT_NEW, dObj));
return;
}
}
}
// MOS - add data object to Bloomfilter to cover the case
// where there was no incoming event (e.g. encrypting data object from local app)
if (dObj->getABEStatus() != DataObject::ABE_NOT_NEEDED && !localBF->has(dObj)) {
localBF->add(dObj);
HAGGLE_DBG("Adding encrypted data object [%s] to our bloomfilter, #objs=%d\n", DataObject::idString(dObj).c_str(), localBF->numObjects());
kernel->getThisNode()->getBloomfilter()->add(dObj); // MOS
}
if (cacheStrategy && !cacheStrategy->isDone() && cacheStrategy->isResponsibleForDataObject(dObj)) {
cacheStrategy->handleNewDataObject(dObj);
}
else {
//default action for dObj's that are NOT handled by cache strat code
insertDataObjectIntoDataStore (dObj);
}
}
/*
Check incoming data objects for two reasons:
1) whether they have an embedded certificate, in which case we verify
it and add it to our store in case it is not already there.
2) sign any data objects that were generated by local applications.
*/
void SecurityManager::onIncomingDataObject(Event *e)
{
DataObjectRef dObj;
if (!e || !e->hasData())
return;
dObj = e->getDataObject();
if (dObj->isDuplicate())
return;
Metadata *m = dObj->getMetadata()->getMetadata("Security");
// Check if there is a certificate embedded that we do not already have stored
if (m && m->getMetadata("Certificate")) {
HAGGLE_DBG("Data object has embedded certificate, trying to verify it!\n");
helper->addTask(new SecurityTask(SECURITY_TASK_VERIFY_CERTIFICATE, dObj));
}
InterfaceRef iface = dObj->getRemoteInterface();
// Check if this data object came from an application, in that case we sign it.
// In the future, the signing should potentially be handled by the application
// itself. But this requires some major rethinking of how to manage certificates
// and keys, etc.
if (iface && iface->getType() == Interface::TYPE_APPLICATION_PORT && dObj->shouldSign()) {
HAGGLE_DBG("Data object should be signed\n");
// FIXME: data objects should really be signed in the SecurityHelper thread since
// it is a potentially CPU intensive operation. But it is currently not possible
// to ensure that the signing operation has finished in the helper thread before
// the data object is added to the data store.
if (helper->signDataObject(dObj, privKey)) {
HAGGLE_DBG("Successfully signed data object %s, which was added by an application.\n",
dObj->getIdStr());
} else {
HAGGLE_DBG("Signing of data object %s, which was added by an application, failed!\n",
dObj->getIdStr());
}
}
}
/*
* Returns true iff
*/
bool
CacheStrategyUtility::isResponsibleForDataObject(
DataObjectRef &dObj)
{
string id = string(dObj->getIdStr());
/*
// THIS IS NOT THREAD SAFE!! added getOrigSize
// to grab unaltered file size.
if (utilMetadata.find(id) != utilMetadata.end()) {
return true;
}
*/
if (dObj->isDuplicate()) {
return false;
}
// SW: TODO: NOTE: this might not be the best way to check if it's from
// a local application, but it works for now...
bool isLocal = dObj->getRemoteInterface() && dObj->getRemoteInterface()->isApplication();
bool notResponsible = dObj->isControlMessage() || dObj->isNodeDescription();
bool isResponsible = !notResponsible;
if (!handle_zero_size) {
isResponsible = isResponsible && (dObj->getOrigDataLen() > 0);
}
if (!manage_locally_sent_files) {
isResponsible = isResponsible && dObj->isPersistent();
}
if (stats_replacement_strat && stats_replacement_strat->isResponsibleForDataObject(dObj)) {
isResponsible = true;
} else if (manage_only_remote_files) {
isResponsible = isResponsible && !isLocal;
}
return isResponsible;
}