namespace nfd {
NFD_LOG_INIT("FaceManager");
const Name FaceManager::COMMAND_PREFIX("/localhost/nfd/faces");
const size_t FaceManager::COMMAND_UNSIGNED_NCOMPS =
FaceManager::COMMAND_PREFIX.size() +
1 + // verb
1; // verb parameters
const size_t FaceManager::COMMAND_SIGNED_NCOMPS =
FaceManager::COMMAND_UNSIGNED_NCOMPS +
4; // (timestamp, nonce, signed info tlv, signature tlv)
const FaceManager::SignedVerbAndProcessor FaceManager::SIGNED_COMMAND_VERBS[] =
{
SignedVerbAndProcessor(
Name::Component("create"),
&FaceManager::createFace
),
SignedVerbAndProcessor(
Name::Component("destroy"),
&FaceManager::destroyFace
),
SignedVerbAndProcessor(
Name::Component("enable-local-control"),
&FaceManager::enableLocalControl
),
SignedVerbAndProcessor(
Name::Component("disable-local-control"),
&FaceManager::disableLocalControl
),
};
const FaceManager::UnsignedVerbAndProcessor FaceManager::UNSIGNED_COMMAND_VERBS[] =
{
UnsignedVerbAndProcessor(
Name::Component("list"),
&FaceManager::listFaces
),
UnsignedVerbAndProcessor(
Name::Component("events"),
&FaceManager::ignoreUnsignedVerb
),
UnsignedVerbAndProcessor(
Name::Component("channels"),
&FaceManager::listChannels
),
UnsignedVerbAndProcessor(
Name::Component("query"),
&FaceManager::listQueriedFaces
),
};
const Name FaceManager::FACES_LIST_DATASET_PREFIX("/localhost/nfd/faces/list");
const size_t FaceManager::FACES_LIST_DATASET_NCOMPS = FACES_LIST_DATASET_PREFIX.size();
const Name FaceManager::FACE_EVENTS_PREFIX("/localhost/nfd/faces/events");
const Name FaceManager::CHANNELS_LIST_DATASET_PREFIX("/localhost/nfd/faces/channels");
const size_t FaceManager::CHANNELS_LIST_DATASET_NCOMPS = CHANNELS_LIST_DATASET_PREFIX.size();
const Name FaceManager::FACES_QUERY_DATASET_PREFIX("/localhost/nfd/faces/query");
const size_t FaceManager::FACES_QUERY_DATASET_NCOMPS = FACES_QUERY_DATASET_PREFIX.size() + 1;
FaceManager::FaceManager(FaceTable& faceTable,
shared_ptr<InternalFace> face,
ndn::KeyChain& keyChain)
: ManagerBase(face, FACE_MANAGER_PRIVILEGE, keyChain)
, m_faceTable(faceTable)
, m_faceAddConn(m_faceTable.onAdd.connect(bind(&FaceManager::onAddFace, this, _1)))
, m_faceRemoveConn(m_faceTable.onRemove.connect(bind(&FaceManager::onRemoveFace, this, _1)))
, m_faceStatusPublisher(m_faceTable, *m_face, FACES_LIST_DATASET_PREFIX, keyChain)
, m_channelStatusPublisher(m_factories, *m_face, CHANNELS_LIST_DATASET_PREFIX, keyChain)
, m_notificationStream(*m_face, FACE_EVENTS_PREFIX, keyChain)
, m_signedVerbDispatch(SIGNED_COMMAND_VERBS,
SIGNED_COMMAND_VERBS +
(sizeof(SIGNED_COMMAND_VERBS) / sizeof(SignedVerbAndProcessor)))
, m_unsignedVerbDispatch(UNSIGNED_COMMAND_VERBS,
UNSIGNED_COMMAND_VERBS +
(sizeof(UNSIGNED_COMMAND_VERBS) / sizeof(UnsignedVerbAndProcessor)))
{
face->setInterestFilter("/localhost/nfd/faces",
bind(&FaceManager::onFaceRequest, this, _2));
}
FaceManager::~FaceManager()
{
}
void
FaceManager::setConfigFile(ConfigFile& configFile)
{
configFile.addSectionHandler("face_system",
bind(&FaceManager::onConfig, this, _1, _2, _3));
}
void
FaceManager::onConfig(const ConfigSection& configSection,
bool isDryRun,
const std::string& filename)
{
throw Error("Not supported");
}
void
FaceManager::onFaceRequest(const Interest& request)
{
const Name& command = request.getName();
const size_t commandNComps = command.size();
if (commandNComps <= COMMAND_PREFIX.size())
{
// command is too short to have a verb
NFD_LOG_DEBUG("command result: malformed");
sendResponse(command, 400, "Malformed command");
return;
}
const Name::Component& verb = command.at(COMMAND_PREFIX.size());
const auto unsignedVerbProcessor = m_unsignedVerbDispatch.find(verb);
if (unsignedVerbProcessor != m_unsignedVerbDispatch.end())
{
NFD_LOG_DEBUG("command result: processing verb: " << verb);
(unsignedVerbProcessor->second)(this, request);
}
else if (COMMAND_UNSIGNED_NCOMPS <= commandNComps &&
commandNComps < COMMAND_SIGNED_NCOMPS)
{
NFD_LOG_DEBUG("command result: unsigned verb: " << command);
sendResponse(command, 401, "Signature required");
}
else if (commandNComps < COMMAND_SIGNED_NCOMPS ||
!COMMAND_PREFIX.isPrefixOf(command))
{
NFD_LOG_DEBUG("command result: malformed");
sendResponse(command, 400, "Malformed command");
}
else
{
validate(request,
bind(&FaceManager::onValidatedFaceRequest, this, _1),
bind(&ManagerBase::onCommandValidationFailed, this, _1, _2));
}
}
void
FaceManager::onValidatedFaceRequest(const shared_ptr<const Interest>& request)
{
const Name& command = request->getName();
const Name::Component& verb = command[COMMAND_PREFIX.size()];
const Name::Component& parameterComponent = command[COMMAND_PREFIX.size() + 1];
SignedVerbDispatchTable::const_iterator signedVerbProcessor = m_signedVerbDispatch.find(verb);
if (signedVerbProcessor != m_signedVerbDispatch.end())
{
ControlParameters parameters;
if (!extractParameters(parameterComponent, parameters))
{
sendResponse(command, 400, "Malformed command");
return;
}
NFD_LOG_DEBUG("command result: processing verb: " << verb);
(signedVerbProcessor->second)(this, *request, parameters);
}
else
{
NFD_LOG_DEBUG("command result: unsupported verb: " << verb);
sendResponse(command, 501, "Unsupported command");
}
}
void
FaceManager::addCreatedFaceToForwarder(const shared_ptr<Face>& newFace)
{
m_faceTable.add(newFace);
//NFD_LOG_DEBUG("Created face " << newFace->getRemoteUri() << " ID " << newFace->getId());
}
void
FaceManager::onCreated(const Name& requestName,
ControlParameters& parameters,
const shared_ptr<Face>& newFace)
{
addCreatedFaceToForwarder(newFace);
parameters.setFaceId(newFace->getId());
parameters.setUri(newFace->getRemoteUri().toString());
sendResponse(requestName, 200, "Success", parameters.wireEncode());
}
void
FaceManager::onConnectFailed(const Name& requestName, const std::string& reason)
{
NFD_LOG_DEBUG("Failed to create face: " << reason);
sendResponse(requestName, 408, reason);
}
void
FaceManager::createFace(const Interest& request,
ControlParameters& parameters)
{
const Name& requestName = request.getName();
ndn::nfd::FaceCreateCommand command;
if (!validateParameters(command, parameters))
{
sendResponse(requestName, 400, "Malformed command");
NFD_LOG_TRACE("invalid control parameters URI");
return;
}
FaceUri uri;
if (!uri.parse(parameters.getUri()))
{
sendResponse(requestName, 400, "Malformed command");
NFD_LOG_TRACE("failed to parse URI");
return;
}
if (!uri.isCanonical())
{
sendResponse(requestName, 400, "Non-canonical URI");
NFD_LOG_TRACE("received non-canonical URI");
return;
}
FactoryMap::iterator factory = m_factories.find(uri.getScheme());
if (factory == m_factories.end())
{
sendResponse(requestName, 501, "Unsupported protocol");
return;
}
try
{
factory->second->createFace(uri,
bind(&FaceManager::onCreated,
this, requestName, parameters, _1),
bind(&FaceManager::onConnectFailed,
this, requestName, _1));
}
catch (const std::runtime_error& error)
{
std::string errorMessage = "NFD error: ";
errorMessage += error.what();
NFD_LOG_ERROR(errorMessage);
sendResponse(requestName, 500, errorMessage);
}
catch (const std::logic_error& error)
{
std::string errorMessage = "NFD error: ";
errorMessage += error.what();
NFD_LOG_ERROR(errorMessage);
sendResponse(requestName, 500, errorMessage);
}
}
void
FaceManager::destroyFace(const Interest& request,
ControlParameters& parameters)
{
const Name& requestName = request.getName();
ndn::nfd::FaceDestroyCommand command;
if (!validateParameters(command, parameters))
{
sendResponse(requestName, 400, "Malformed command");
return;
}
shared_ptr<Face> target = m_faceTable.get(parameters.getFaceId());
if (static_cast<bool>(target))
{
target->close();
}
sendResponse(requestName, 200, "Success", parameters.wireEncode());
}
void
FaceManager::onAddFace(shared_ptr<Face> face)
{
ndn::nfd::FaceEventNotification notification;
notification.setKind(ndn::nfd::FACE_EVENT_CREATED);
face->copyStatusTo(notification);
m_notificationStream.postNotification(notification);
}
void
FaceManager::onRemoveFace(shared_ptr<Face> face)
{
ndn::nfd::FaceEventNotification notification;
notification.setKind(ndn::nfd::FACE_EVENT_DESTROYED);
face->copyStatusTo(notification);
m_notificationStream.postNotification(notification);
}
bool
FaceManager::extractLocalControlParameters(const Interest& request,
ControlParameters& parameters,
ControlCommand& command,
shared_ptr<LocalFace>& outFace,
LocalControlFeature& outFeature)
{
if (!validateParameters(command, parameters))
{
sendResponse(request.getName(), 400, "Malformed command");
return false;
}
shared_ptr<Face> face = m_faceTable.get(request.getIncomingFaceId());
if (!static_cast<bool>(face))
{
NFD_LOG_DEBUG("command result: faceid " << request.getIncomingFaceId() << " not found");
sendResponse(request.getName(), 410, "Face not found");
return false;
}
else if (!face->isLocal())
{
NFD_LOG_DEBUG("command result: cannot enable local control on non-local faceid " <<
face->getId());
sendResponse(request.getName(), 412, "Face is non-local");
return false;
}
outFace = dynamic_pointer_cast<LocalFace>(face);
outFeature = static_cast<LocalControlFeature>(parameters.getLocalControlFeature());
return true;
}
void
FaceManager::enableLocalControl(const Interest& request,
ControlParameters& parameters)
{
ndn::nfd::FaceEnableLocalControlCommand command;
shared_ptr<LocalFace> face;
LocalControlFeature feature;
if (extractLocalControlParameters(request, parameters, command, face, feature))
{
face->setLocalControlHeaderFeature(feature, true);
sendResponse(request.getName(), 200, "Success", parameters.wireEncode());
}
}
void
FaceManager::disableLocalControl(const Interest& request,
ControlParameters& parameters)
{
ndn::nfd::FaceDisableLocalControlCommand command;
shared_ptr<LocalFace> face;
LocalControlFeature feature;
if (extractLocalControlParameters(request, parameters, command, face, feature))
{
face->setLocalControlHeaderFeature(feature, false);
sendResponse(request.getName(), 200, "Success", parameters.wireEncode());
}
}
void
FaceManager::listFaces(const Interest& request)
{
const Name& command = request.getName();
const size_t commandNComps = command.size();
if (commandNComps < FACES_LIST_DATASET_NCOMPS ||
!FACES_LIST_DATASET_PREFIX.isPrefixOf(command))
{
NFD_LOG_DEBUG("command result: malformed");
sendResponse(command, 400, "Malformed command");
return;
}
m_faceStatusPublisher.publish();
}
void
FaceManager::listChannels(const Interest& request)
{
NFD_LOG_DEBUG("in listChannels");
const Name& command = request.getName();
const size_t commandNComps = command.size();
if (commandNComps < CHANNELS_LIST_DATASET_NCOMPS ||
!CHANNELS_LIST_DATASET_PREFIX.isPrefixOf(command))
{
NFD_LOG_DEBUG("command result: malformed");
sendResponse(command, 400, "Malformed command");
return;
}
NFD_LOG_DEBUG("publishing");
m_channelStatusPublisher.publish();
}
void
FaceManager::listQueriedFaces(const Interest& request)
{
NFD_LOG_DEBUG("in listQueriedFaces");
const Name& query = request.getName();
const size_t queryNComps = query.size();
if (queryNComps < FACES_QUERY_DATASET_NCOMPS ||
!FACES_QUERY_DATASET_PREFIX.isPrefixOf(query))
{
NFD_LOG_DEBUG("query result: malformed");
sendNack(query);
return;
}
ndn::nfd::FaceQueryFilter faceFilter;
try
{
faceFilter.wireDecode(query[-1].blockFromValue());
}
catch (tlv::Error&)
{
NFD_LOG_DEBUG("query result: malformed filter");
sendNack(query);
return;
}
FaceQueryStatusPublisher
faceQueryStatusPublisher(m_faceTable, *m_face, query, faceFilter, m_keyChain);
faceQueryStatusPublisher.publish();
}
shared_ptr<ProtocolFactory>
FaceManager::findFactory(const std::string& protocol)
{
FactoryMap::iterator factory = m_factories.find(protocol);
if (factory != m_factories.end())
return factory->second;
else
return shared_ptr<ProtocolFactory>();
}
} // namespace nfd
namespace nfd {
NFD_LOG_INIT("FibManager");
const Name FibManager::COMMAND_PREFIX = "/localhost/nfd/fib";
const size_t FibManager::COMMAND_UNSIGNED_NCOMPS =
FibManager::COMMAND_PREFIX.size() +
1 + // verb
1; // verb parameters
const size_t FibManager::COMMAND_SIGNED_NCOMPS =
FibManager::COMMAND_UNSIGNED_NCOMPS +
4; // (timestamp, nonce, signed info tlv, signature tlv)
const FibManager::SignedVerbAndProcessor FibManager::SIGNED_COMMAND_VERBS[] =
{
SignedVerbAndProcessor(
Name::Component("add-nexthop"),
&FibManager::addNextHop
),
SignedVerbAndProcessor(
Name::Component("remove-nexthop"),
&FibManager::removeNextHop
),
};
const FibManager::UnsignedVerbAndProcessor FibManager::UNSIGNED_COMMAND_VERBS[] =
{
UnsignedVerbAndProcessor(
Name::Component("list"),
&FibManager::listEntries
),
};
const Name FibManager::LIST_COMMAND_PREFIX("/localhost/nfd/fib/list");
const size_t FibManager::LIST_COMMAND_NCOMPS = LIST_COMMAND_PREFIX.size();
FibManager::FibManager(Fib& fib,
function<shared_ptr<Face>(FaceId)> getFace,
shared_ptr<InternalFace> face)
: ManagerBase(face, FIB_PRIVILEGE)
, m_managedFib(fib)
, m_getFace(getFace)
, m_fibEnumerationPublisher(fib, face, LIST_COMMAND_PREFIX)
, m_signedVerbDispatch(SIGNED_COMMAND_VERBS,
SIGNED_COMMAND_VERBS +
(sizeof(SIGNED_COMMAND_VERBS) / sizeof(SignedVerbAndProcessor)))
, m_unsignedVerbDispatch(UNSIGNED_COMMAND_VERBS,
UNSIGNED_COMMAND_VERBS +
(sizeof(UNSIGNED_COMMAND_VERBS) / sizeof(UnsignedVerbAndProcessor)))
{
face->setInterestFilter("/localhost/nfd/fib",
bind(&FibManager::onFibRequest, this, _2));
}
FibManager::~FibManager()
{
}
void
FibManager::onFibRequest(const Interest& request)
{
const Name& command = request.getName();
const size_t commandNComps = command.size();
const Name::Component& verb = command.get(COMMAND_PREFIX.size());
UnsignedVerbDispatchTable::const_iterator unsignedVerbProcessor = m_unsignedVerbDispatch.find(verb);
if (unsignedVerbProcessor != m_unsignedVerbDispatch.end())
{
NFD_LOG_DEBUG("command result: processing verb: " << verb);
(unsignedVerbProcessor->second)(this, request);
}
else if (COMMAND_UNSIGNED_NCOMPS <= commandNComps &&
commandNComps < COMMAND_SIGNED_NCOMPS)
{
NFD_LOG_DEBUG("command result: unsigned verb: " << command);
sendResponse(command, 401, "Signature required");
}
else if (commandNComps < COMMAND_SIGNED_NCOMPS ||
!COMMAND_PREFIX.isPrefixOf(command))
{
NFD_LOG_DEBUG("command result: malformed");
sendResponse(command, 400, "Malformed command");
}
else
{
validate(request,
bind(&FibManager::onValidatedFibRequest, this, _1),
bind(&ManagerBase::onCommandValidationFailed, this, _1, _2));
}
}
void
FibManager::onValidatedFibRequest(const shared_ptr<const Interest>& request)
{
const Name& command = request->getName();
const Name::Component& verb = command[COMMAND_PREFIX.size()];
const Name::Component& parameterComponent = command[COMMAND_PREFIX.size() + 1];
SignedVerbDispatchTable::const_iterator verbProcessor = m_signedVerbDispatch.find(verb);
if (verbProcessor != m_signedVerbDispatch.end())
{
ControlParameters parameters;
if (!extractParameters(parameterComponent, parameters) || !parameters.hasFaceId())
{
NFD_LOG_DEBUG("command result: malformed verb: " << verb);
sendResponse(command, 400, "Malformed command");
return;
}
if (parameters.getFaceId() == 0)
{
parameters.setFaceId(request->getIncomingFaceId());
}
NFD_LOG_DEBUG("command result: processing verb: " << verb);
ControlResponse response;
(verbProcessor->second)(this, parameters, response);
sendResponse(command, response);
}
else
{
NFD_LOG_DEBUG("command result: unsupported verb: " << verb);
sendResponse(command, 501, "Unsupported command");
}
}
void
FibManager::addNextHop(ControlParameters& parameters,
ControlResponse& response)
{
ndn::nfd::FibAddNextHopCommand command;
if (!validateParameters(command, parameters))
{
NFD_LOG_DEBUG("add-nexthop result: FAIL reason: malformed");
setResponse(response, 400, "Malformed command");
return;
}
const Name& prefix = parameters.getName();
FaceId faceId = parameters.getFaceId();
uint64_t cost = parameters.getCost();
NFD_LOG_TRACE("add-nexthop prefix: " << prefix
<< " faceid: " << faceId
<< " cost: " << cost);
shared_ptr<Face> nextHopFace = m_getFace(faceId);
if (static_cast<bool>(nextHopFace))
{
shared_ptr<fib::Entry> entry = m_managedFib.insert(prefix).first;
entry->addNextHop(nextHopFace, cost);
NFD_LOG_DEBUG("add-nexthop result: OK"
<< " prefix:" << prefix
<< " faceid: " << faceId
<< " cost: " << cost);
setResponse(response, 200, "Success", parameters.wireEncode());
}
else
{
NFD_LOG_DEBUG("add-nexthop result: FAIL reason: unknown-faceid: " << faceId);
setResponse(response, 410, "Face not found");
}
}
void
FibManager::removeNextHop(ControlParameters& parameters,
ControlResponse& response)
{
ndn::nfd::FibRemoveNextHopCommand command;
if (!validateParameters(command, parameters))
{
NFD_LOG_DEBUG("remove-nexthop result: FAIL reason: malformed");
setResponse(response, 400, "Malformed command");
return;
}
NFD_LOG_TRACE("remove-nexthop prefix: " << parameters.getName()
<< " faceid: " << parameters.getFaceId());
shared_ptr<Face> faceToRemove = m_getFace(parameters.getFaceId());
if (static_cast<bool>(faceToRemove))
{
shared_ptr<fib::Entry> entry = m_managedFib.findExactMatch(parameters.getName());
if (static_cast<bool>(entry))
{
entry->removeNextHop(faceToRemove);
NFD_LOG_DEBUG("remove-nexthop result: OK prefix: " << parameters.getName()
<< " faceid: " << parameters.getFaceId());
if (!entry->hasNextHops())
{
m_managedFib.erase(*entry);
}
}
else
{
NFD_LOG_DEBUG("remove-nexthop result: OK, but entry for face id "
<< parameters.getFaceId() << " not found");
}
}
else
{
NFD_LOG_DEBUG("remove-nexthop result: OK, but face id "
<< parameters.getFaceId() << " not found");
}
setResponse(response, 200, "Success", parameters.wireEncode());
}
void
FibManager::listEntries(const Interest& request)
{
const Name& command = request.getName();
const size_t commandNComps = command.size();
if (commandNComps < LIST_COMMAND_NCOMPS ||
!LIST_COMMAND_PREFIX.isPrefixOf(command))
{
NFD_LOG_DEBUG("command result: malformed");
sendResponse(command, 400, "Malformed command");
return;
}
m_fibEnumerationPublisher.publish();
}
} // namespace nfd
namespace rib {
NFD_LOG_INIT("RibManager");
const Name RibManager::COMMAND_PREFIX = "/localhost/nfd/rib";
const Name RibManager::REMOTE_COMMAND_PREFIX = "/localhop/nfd/rib";
const Name RibManager::FACES_LIST_DATASET_PREFIX = "/localhost/nfd/faces/list";
const size_t RibManager::COMMAND_UNSIGNED_NCOMPS =
RibManager::COMMAND_PREFIX.size() +
1 + // verb
1; // verb options
const size_t RibManager::COMMAND_SIGNED_NCOMPS =
RibManager::COMMAND_UNSIGNED_NCOMPS +
4; // (timestamp, nonce, signed info tlv, signature tlv)
const RibManager::SignedVerbAndProcessor RibManager::SIGNED_COMMAND_VERBS[] =
{
SignedVerbAndProcessor(
Name::Component("register"),
&RibManager::registerEntry
),
SignedVerbAndProcessor(
Name::Component("unregister"),
&RibManager::unregisterEntry
),
};
const RibManager::UnsignedVerbAndProcessor RibManager::UNSIGNED_COMMAND_VERBS[] =
{
UnsignedVerbAndProcessor(
Name::Component("list"),
&RibManager::listEntries
),
};
const Name RibManager::LIST_COMMAND_PREFIX("/localhost/nfd/rib/list");
const size_t RibManager::LIST_COMMAND_NCOMPS = LIST_COMMAND_PREFIX.size();
const time::seconds RibManager::ACTIVE_FACE_FETCH_INTERVAL = time::seconds(300);
RibManager::RibManager(ndn::Face& face, ndn::KeyChain& keyChain)
: m_face(face)
, m_keyChain(keyChain)
, m_nfdController(m_face, m_keyChain)
, m_localhostValidator(m_face)
, m_localhopValidator(m_face)
, m_faceMonitor(m_face)
, m_isLocalhopEnabled(false)
, m_prefixPropagator(m_nfdController, m_keyChain, m_managedRib)
, m_ribStatusPublisher(m_managedRib, face, LIST_COMMAND_PREFIX, m_keyChain)
, m_fibUpdater(m_managedRib, m_nfdController)
, m_signedVerbDispatch(SIGNED_COMMAND_VERBS,
SIGNED_COMMAND_VERBS +
(sizeof(SIGNED_COMMAND_VERBS) / sizeof(SignedVerbAndProcessor)))
, m_unsignedVerbDispatch(UNSIGNED_COMMAND_VERBS,
UNSIGNED_COMMAND_VERBS +
(sizeof(UNSIGNED_COMMAND_VERBS) / sizeof(UnsignedVerbAndProcessor)))
{
}
RibManager::~RibManager()
{
scheduler::cancel(m_activeFaceFetchEvent);
}
void
RibManager::startListening(const Name& commandPrefix, const ndn::OnInterest& onRequest)
{
NFD_LOG_INFO("Listening on: " << commandPrefix);
m_nfdController.start<ndn::nfd::FibAddNextHopCommand>(
ControlParameters()
.setName(commandPrefix)
.setFaceId(0),
bind(&RibManager::onNrdCommandPrefixAddNextHopSuccess, this, cref(commandPrefix), _1),
bind(&RibManager::onNrdCommandPrefixAddNextHopError, this, cref(commandPrefix), _2));
m_face.setInterestFilter(commandPrefix, onRequest);
}
void
RibManager::registerWithNfd()
{
//check whether the components of localhop and localhost prefixes are same
BOOST_ASSERT(COMMAND_PREFIX.size() == REMOTE_COMMAND_PREFIX.size());
this->startListening(COMMAND_PREFIX, bind(&RibManager::onLocalhostRequest, this, _2));
if (m_isLocalhopEnabled) {
this->startListening(REMOTE_COMMAND_PREFIX,
bind(&RibManager::onLocalhopRequest, this, _2));
}
NFD_LOG_INFO("Start monitoring face create/destroy events");
m_faceMonitor.onNotification.connect(bind(&RibManager::onNotification, this, _1));
m_faceMonitor.start();
scheduleActiveFaceFetch(ACTIVE_FACE_FETCH_INTERVAL);
}
void
RibManager::setConfigFile(ConfigFile& configFile)
{
configFile.addSectionHandler("rib",
bind(&RibManager::onConfig, this, _1, _2, _3));
}
void
RibManager::onConfig(const ConfigSection& configSection,
bool isDryRun,
const std::string& filename)
{
bool isAutoPrefixPropagatorEnabled = false;
for (const auto& item : configSection) {
if (item.first == "localhost_security") {
m_localhostValidator.load(item.second, filename);
}
else if (item.first == "localhop_security") {
m_localhopValidator.load(item.second, filename);
m_isLocalhopEnabled = true;
}
else if (item.first == "auto_prefix_propagate") {
m_prefixPropagator.loadConfig(item.second);
isAutoPrefixPropagatorEnabled = true;
// Avoid other actions when isDryRun == true
if (isDryRun) {
continue;
}
m_prefixPropagator.enable();
}
else {
BOOST_THROW_EXCEPTION(Error("Unrecognized rib property: " + item.first));
}
}
if (!isAutoPrefixPropagatorEnabled) {
m_prefixPropagator.disable();
}
}
void
RibManager::sendResponse(const Name& name,
const ControlResponse& response)
{
const Block& encodedControl = response.wireEncode();
shared_ptr<Data> responseData = make_shared<Data>(name);
responseData->setContent(encodedControl);
m_keyChain.sign(*responseData);
m_face.put(*responseData);
}
void
RibManager::sendResponse(const Name& name,
uint32_t code,
const std::string& text)
{
ControlResponse response(code, text);
sendResponse(name, response);
}
void
RibManager::onLocalhostRequest(const Interest& request)
{
const Name& command = request.getName();
const Name::Component& verb = command.get(COMMAND_PREFIX.size());
UnsignedVerbDispatchTable::const_iterator unsignedVerbProcessor = m_unsignedVerbDispatch.find(verb);
if (unsignedVerbProcessor != m_unsignedVerbDispatch.end()) {
NFD_LOG_DEBUG("command result: processing unsigned verb: " << verb);
(unsignedVerbProcessor->second)(this, request);
}
else {
m_localhostValidator.validate(request,
bind(&RibManager::onCommandValidated, this, _1),
bind(&RibManager::onCommandValidationFailed, this, _1, _2));
}
}
void
RibManager::onLocalhopRequest(const Interest& request)
{
m_localhopValidator.validate(request,
bind(&RibManager::onCommandValidated, this, _1),
bind(&RibManager::onCommandValidationFailed, this, _1, _2));
}
void
RibManager::onCommandValidated(const shared_ptr<const Interest>& request)
{
// REMOTE_COMMAND_PREFIX number of componenets are same as
// NRD_COMMAND_PREFIX's so no extra checks are required.
const Name& command = request->getName();
const Name::Component& verb = command[COMMAND_PREFIX.size()];
const Name::Component& parameterComponent = command[COMMAND_PREFIX.size() + 1];
SignedVerbDispatchTable::const_iterator verbProcessor = m_signedVerbDispatch.find(verb);
if (verbProcessor != m_signedVerbDispatch.end()) {
ControlParameters parameters;
if (!extractParameters(parameterComponent, parameters)) {
NFD_LOG_DEBUG("command result: malformed verb: " << verb);
if (static_cast<bool>(request)) {
sendResponse(command, 400, "Malformed command");
}
return;
}
NFD_LOG_DEBUG("command result: processing verb: " << verb);
(verbProcessor->second)(this, request, parameters);
}
else {
NFD_LOG_DEBUG("Unsupported command: " << verb);
if (static_cast<bool>(request)) {
sendResponse(request->getName(), 501, "Unsupported command");
}
}
}
void
RibManager::registerEntry(const shared_ptr<const Interest>& request,
ControlParameters& parameters)
{
ndn::nfd::RibRegisterCommand command;
if (!validateParameters(command, parameters)) {
NFD_LOG_DEBUG("register result: FAIL reason: malformed");
if (static_cast<bool>(request)) {
sendResponse(request->getName(), 400, "Malformed command");
}
return;
}
bool isSelfRegistration = (!parameters.hasFaceId() || parameters.getFaceId() == 0);
if (isSelfRegistration) {
shared_ptr<lp::IncomingFaceIdTag> incomingFaceIdTag = request->getTag<lp::IncomingFaceIdTag>();
if (incomingFaceIdTag == nullptr) {
sendResponse(request->getName(), 503,
"requested self-registration, but IncomingFaceId is unavailable");
return;
}
parameters.setFaceId(*incomingFaceIdTag);
}
// Respond since command is valid and authorized
sendSuccessResponse(request, parameters);
Route route;
route.faceId = parameters.getFaceId();
route.origin = parameters.getOrigin();
route.cost = parameters.getCost();
route.flags = parameters.getFlags();
if (parameters.hasExpirationPeriod() &&
parameters.getExpirationPeriod() != time::milliseconds::max())
{
route.expires = time::steady_clock::now() + parameters.getExpirationPeriod();
// Schedule a new event, the old one will be cancelled during rib insertion.
scheduler::EventId eventId = scheduler::schedule(parameters.getExpirationPeriod(),
bind(&Rib::onRouteExpiration, &m_managedRib, parameters.getName(), route));
NFD_LOG_TRACE("Scheduled unregistration at: " << route.expires <<
" with EventId: " << eventId);
// Set the NewEventId of this entry
route.setExpirationEvent(eventId);
}
else {
route.expires = time::steady_clock::TimePoint::max();
}
NFD_LOG_INFO("Adding route " << parameters.getName() << " nexthop=" << route.faceId
<< " origin=" << route.origin
<< " cost=" << route.cost);
RibUpdate update;
update.setAction(RibUpdate::REGISTER)
.setName(parameters.getName())
.setRoute(route);
m_managedRib.beginApplyUpdate(update,
bind(&RibManager::onRibUpdateSuccess, this, update),
bind(&RibManager::onRibUpdateFailure, this, update, _1, _2));
m_registeredFaces.insert(route.faceId);
}
void
RibManager::unregisterEntry(const shared_ptr<const Interest>& request,
ControlParameters& params)
{
ndn::nfd::RibUnregisterCommand command;
// Passing all parameters gives error in validation,
// so passing only the required arguments.
ControlParameters parameters;
parameters.setName(params.getName());
if (params.hasFaceId()) {
parameters.setFaceId(params.getFaceId());
}
if (params.hasOrigin()) {
parameters.setOrigin(params.getOrigin());
}
if (!validateParameters(command, parameters)) {
NFD_LOG_DEBUG("unregister result: FAIL reason: malformed");
if (static_cast<bool>(request)) {
sendResponse(request->getName(), 400, "Malformed command");
}
return;
}
bool isSelfRegistration = (!parameters.hasFaceId() || parameters.getFaceId() == 0);
if (isSelfRegistration) {
shared_ptr<lp::IncomingFaceIdTag> incomingFaceIdTag = request->getTag<lp::IncomingFaceIdTag>();
if (incomingFaceIdTag == nullptr) {
sendResponse(request->getName(), 503,
"requested self-registration, but IncomingFaceId is unavailable");
return;
}
parameters.setFaceId(*incomingFaceIdTag);
}
// Respond since command is valid and authorized
sendSuccessResponse(request, parameters);
Route route;
route.faceId = parameters.getFaceId();
route.origin = parameters.getOrigin();
NFD_LOG_INFO("Removing route " << parameters.getName() << " nexthop=" << route.faceId
<< " origin=" << route.origin);
RibUpdate update;
update.setAction(RibUpdate::UNREGISTER)
.setName(parameters.getName())
.setRoute(route);
m_managedRib.beginApplyUpdate(update,
bind(&RibManager::onRibUpdateSuccess, this, update),
bind(&RibManager::onRibUpdateFailure, this, update, _1, _2));
}
void
RibManager::onCommandValidationFailed(const shared_ptr<const Interest>& request,
const std::string& failureInfo)
{
NFD_LOG_DEBUG("RibRequestValidationFailed: " << failureInfo);
if (static_cast<bool>(request)) {
sendResponse(request->getName(), 403, failureInfo);
}
}
bool
RibManager::extractParameters(const Name::Component& parameterComponent,
ControlParameters& extractedParameters)
{
try {
Block rawParameters = parameterComponent.blockFromValue();
extractedParameters.wireDecode(rawParameters);
}
catch (const tlv::Error&) {
return false;
}
NFD_LOG_DEBUG("Parameters parsed OK");
return true;
}
bool
RibManager::validateParameters(const ControlCommand& command,
ControlParameters& parameters)
{
try {
command.validateRequest(parameters);
}
catch (const ControlCommand::ArgumentError&) {
return false;
}
command.applyDefaultsToRequest(parameters);
return true;
}
void
RibManager::onCommandError(uint32_t code, const std::string& error,
const shared_ptr<const Interest>& request,
const Route& route)
{
NFD_LOG_ERROR("NFD returned an error: " << error << " (code: " << code << ")");
ControlResponse response;
if (code == 404) {
response.setCode(code);
response.setText(error);
}
else {
response.setCode(533);
std::ostringstream os;
os << "Failure to update NFD " << "(NFD Error: " << code << " " << error << ")";
response.setText(os.str());
}
if (static_cast<bool>(request)) {
sendResponse(request->getName(), response);
}
}
void
RibManager::onRegSuccess(const shared_ptr<const Interest>& request,
const ControlParameters& parameters,
const Route& route)
{
ControlResponse response;
response.setCode(200);
response.setText("Success");
response.setBody(parameters.wireEncode());
NFD_LOG_TRACE("onRegSuccess: registered " << route);
if (static_cast<bool>(request)) {
sendResponse(request->getName(), response);
}
}
void
RibManager::onUnRegSuccess(const shared_ptr<const Interest>& request,
const ControlParameters& parameters,
const Route& route)
{
ControlResponse response;
response.setCode(200);
response.setText("Success");
response.setBody(parameters.wireEncode());
NFD_LOG_TRACE("onUnRegSuccess: unregistered " << route);
if (static_cast<bool>(request)) {
sendResponse(request->getName(), response);
}
}
void
RibManager::sendSuccessResponse(const shared_ptr<const Interest>& request,
const ControlParameters& parameters)
{
if (!static_cast<bool>(request)) {
return;
}
ControlResponse response;
response.setCode(200);
response.setText("Success");
response.setBody(parameters.wireEncode());
if (static_cast<bool>(request)) {
sendResponse(request->getName(), response);
}
}
void
RibManager::sendErrorResponse(uint32_t code, const std::string& error,
const shared_ptr<const Interest>& request)
{
NFD_LOG_ERROR("NFD returned an error: " << error << " (code: " << code << ")");
if (!static_cast<bool>(request)) {
return;
}
ControlResponse response;
if (code == 404) {
response.setCode(code);
response.setText(error);
}
else {
response.setCode(533);
std::ostringstream os;
os << "Failure to update NFD " << "(NFD Error: " << code << " " << error << ")";
response.setText(os.str());
}
if (static_cast<bool>(request)) {
sendResponse(request->getName(), response);
}
}
void
RibManager::onRibUpdateSuccess(const RibUpdate& update)
{
NFD_LOG_DEBUG("RIB update succeeded for " << update);
}
void
RibManager::onRibUpdateFailure(const RibUpdate& update, uint32_t code, const std::string& error)
{
NFD_LOG_DEBUG("RIB update failed for " << update << " (code: " << code
<< ", error: " << error << ")");
// Since the FIB rejected the update, clean up invalid routes
scheduleActiveFaceFetch(time::seconds(1));
}
void
RibManager::onNrdCommandPrefixAddNextHopSuccess(const Name& prefix,
const ndn::nfd::ControlParameters& result)
{
NFD_LOG_DEBUG("Successfully registered " + prefix.toUri() + " with NFD");
// Routes must be inserted into the RIB so route flags can be applied
Route route;
route.faceId = result.getFaceId();
route.origin = ndn::nfd::ROUTE_ORIGIN_APP;
route.expires = time::steady_clock::TimePoint::max();
route.flags = ndn::nfd::ROUTE_FLAG_CHILD_INHERIT;
m_managedRib.insert(prefix, route);
m_registeredFaces.insert(route.faceId);
}
void
RibManager::onNrdCommandPrefixAddNextHopError(const Name& name, const std::string& msg)
{
BOOST_THROW_EXCEPTION(Error("Error in setting interest filter (" + name.toUri() + "): " + msg));
}
void
RibManager::onControlHeaderSuccess()
{
NFD_LOG_DEBUG("Local control header enabled");
}
void
RibManager::onControlHeaderError(uint32_t code, const std::string& reason)
{
std::ostringstream os;
os << "Couldn't enable local control header "
<< "(code: " << code << ", info: " << reason << ")";
BOOST_THROW_EXCEPTION(Error(os.str()));
}
void
RibManager::enableLocalControlHeader()
{
m_nfdController.start<ndn::nfd::FaceEnableLocalControlCommand>(
ControlParameters()
.setLocalControlFeature(ndn::nfd::LOCAL_CONTROL_FEATURE_INCOMING_FACE_ID),
bind(&RibManager::onControlHeaderSuccess, this),
bind(&RibManager::onControlHeaderError, this, _1, _2));
}
void
RibManager::onNotification(const FaceEventNotification& notification)
{
NFD_LOG_TRACE("onNotification: " << notification);
if (notification.getKind() == ndn::nfd::FACE_EVENT_DESTROYED) {
NFD_LOG_DEBUG("Received notification for destroyed faceId: " << notification.getFaceId());
scheduler::schedule(time::seconds(0),
bind(&RibManager::onFaceDestroyedEvent, this, notification.getFaceId()));
}
}
void
RibManager::onFaceDestroyedEvent(uint64_t faceId)
{
m_managedRib.beginRemoveFace(faceId);
m_registeredFaces.erase(faceId);
}
void
RibManager::listEntries(const Interest& request)
{
const Name& command = request.getName();
const size_t commandNComps = command.size();
if (commandNComps < LIST_COMMAND_NCOMPS || !LIST_COMMAND_PREFIX.isPrefixOf(command)) {
NFD_LOG_DEBUG("command result: malformed");
sendResponse(command, 400, "Malformed command");
return;
}
m_ribStatusPublisher.publish();
}
void
RibManager::scheduleActiveFaceFetch(const time::seconds& timeToWait)
{
scheduler::cancel(m_activeFaceFetchEvent);
m_activeFaceFetchEvent = scheduler::schedule(timeToWait,
bind(&RibManager::fetchActiveFaces, this));
}
void
RibManager::fetchActiveFaces()
{
NFD_LOG_DEBUG("Fetching active faces");
Interest interest(FACES_LIST_DATASET_PREFIX);
interest.setChildSelector(1);
interest.setMustBeFresh(true);
shared_ptr<ndn::OBufferStream> buffer = make_shared<ndn::OBufferStream>();
m_face.expressInterest(interest,
bind(&RibManager::fetchSegments, this, _2, buffer),
bind(&RibManager::onFetchFaceStatusTimeout, this));
}
void
RibManager::fetchSegments(const Data& data, shared_ptr<ndn::OBufferStream> buffer)
{
buffer->write(reinterpret_cast<const char*>(data.getContent().value()),
data.getContent().value_size());
uint64_t currentSegment = data.getName().get(-1).toSegment();
const name::Component& finalBlockId = data.getMetaInfo().getFinalBlockId();
if (finalBlockId.empty() || finalBlockId.toSegment() > currentSegment) {
m_face.expressInterest(data.getName().getPrefix(-1).appendSegment(currentSegment+1),
bind(&RibManager::fetchSegments, this, _2, buffer),
bind(&RibManager::onFetchFaceStatusTimeout, this));
}
else {
removeInvalidFaces(buffer);
}
}
void
RibManager::removeInvalidFaces(shared_ptr<ndn::OBufferStream> buffer)
{
NFD_LOG_DEBUG("Checking for invalid face registrations");
ndn::ConstBufferPtr buf = buffer->buf();
Block block;
size_t offset = 0;
FaceIdSet activeFaces;
while (offset < buf->size()) {
bool isOk = false;
std::tie(isOk, block) = Block::fromBuffer(buf, offset);
if (!isOk) {
std::cerr << "ERROR: cannot decode FaceStatus TLV" << std::endl;
break;
}
offset += block.size();
ndn::nfd::FaceStatus status(block);
activeFaces.insert(status.getFaceId());
}
// Look for face IDs that were registered but not active to find missed
// face destroyed events
for (uint64_t faceId : m_registeredFaces) {
if (activeFaces.find(faceId) == activeFaces.end()) {
NFD_LOG_DEBUG("Removing invalid face ID: " << faceId);
scheduler::schedule(time::seconds(0),
bind(&RibManager::onFaceDestroyedEvent, this, faceId));
}
}
// Reschedule the check for future clean up
scheduleActiveFaceFetch(ACTIVE_FACE_FETCH_INTERVAL);
}
void
RibManager::onFetchFaceStatusTimeout()
{
std::cerr << "Face Status Dataset request timed out" << std::endl;
scheduleActiveFaceFetch(ACTIVE_FACE_FETCH_INTERVAL);
}
} // namespace rib
