manager-base.cpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#include "manager-base.hpp"
#include "core/logger.hpp"

namespace nfd {

NFD_LOG_INIT("ManagerBase");

ManagerBase::ManagerBase(shared_ptr<InternalFace> face, const std::string& privilege,
                         ndn::KeyChain& keyChain)
  : m_face(face)
  , m_keyChain(keyChain)
{
  face->getValidator().addSupportedPrivilege(privilege);
}

ManagerBase::~ManagerBase()
{

}

bool
ManagerBase::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;
}

void
ManagerBase::sendResponse(const Name& name,
                          uint32_t code,
                          const std::string& text)
{
  ControlResponse response(code, text);
  sendResponse(name, response);
}

void
ManagerBase::sendResponse(const Name& name,
                          uint32_t code,
                          const std::string& text,
                          const Block& body)
{
  ControlResponse response(code, text);
  response.setBody(body);
  sendResponse(name, response);
}

void
ManagerBase::sendResponse(const Name& name,
                          const ControlResponse& response)
{
  NFD_LOG_DEBUG("responding"
                << " name: " << name
                << " code: " << response.getCode()
                << " text: " << response.getText());

  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
ManagerBase::sendNack(const Name& name)
{
  NFD_LOG_DEBUG("responding NACK to " << name);

  ndn::MetaInfo meta;
  meta.setType(tlv::ContentType_Nack);

  shared_ptr<Data> responseData(make_shared<Data>(name));
  responseData->setMetaInfo(meta);

  m_keyChain.sign(*responseData);
  m_face->put(*responseData);
}

bool
ManagerBase::validateParameters(const ControlCommand& command,
                                ControlParameters& parameters)
{
  try
    {
      command.validateRequest(parameters);
    }
  catch (const ControlCommand::ArgumentError& error)
    {
      return false;
    }

  command.applyDefaultsToRequest(parameters);

  return true;
}

void
ManagerBase::onCommandValidationFailed(const shared_ptr<const Interest>& command,
                                       const std::string& error)
{
  NFD_LOG_DEBUG("command result: unauthorized command: " << *command << " (" << error << ")");
  sendResponse(command->getName(), 403, "Unauthorized command");
}


} // namespace nfd