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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2014, Regents of the University of California,
* Arizona Board of Regents,
* Colorado State University,
* University Pierre & Marie Curie, Sorbonne University,
* Washington University in St. Louis,
* Beijing Institute of Technology,
* The University of Memphis
*
* This file is part of NFD (Named Data Networking Forwarding Daemon).
* See AUTHORS.md for complete list of NFD authors and contributors.
*
* NFD is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Foundation,
* either version 3 of the License, or (at your option) any later version.
*
* NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
*/
#include "strategy-choice-manager.hpp"
#include "table/strategy-choice.hpp"
#include "core/logger.hpp"
#include "mgmt/app-face.hpp"
namespace nfd {
NFD_LOG_INIT("StrategyChoiceManager");
const Name StrategyChoiceManager::COMMAND_PREFIX = "/localhost/nfd/strategy-choice";
const size_t StrategyChoiceManager::COMMAND_UNSIGNED_NCOMPS =
StrategyChoiceManager::COMMAND_PREFIX.size() +
1 + // verb
1; // verb parameters
const size_t StrategyChoiceManager::COMMAND_SIGNED_NCOMPS =
StrategyChoiceManager::COMMAND_UNSIGNED_NCOMPS +
4; // (timestamp, nonce, signed info tlv, signature tlv)
const Name StrategyChoiceManager::LIST_DATASET_PREFIX("/localhost/nfd/strategy-choice/list");
StrategyChoiceManager::StrategyChoiceManager(StrategyChoice& strategyChoice,
shared_ptr<InternalFace> face,
ndn::KeyChain& keyChain)
: ManagerBase(face, STRATEGY_CHOICE_PRIVILEGE, keyChain)
, m_strategyChoice(strategyChoice)
, m_listPublisher(strategyChoice, *m_face, LIST_DATASET_PREFIX, keyChain)
{
face->setInterestFilter("/localhost/nfd/strategy-choice",
bind(&StrategyChoiceManager::onStrategyChoiceRequest, this, _2));
}
StrategyChoiceManager::~StrategyChoiceManager()
{
}
void
StrategyChoiceManager::onStrategyChoiceRequest(const Interest& request)
{
const Name& command = request.getName();
const size_t commandNComps = command.size();
if (command == LIST_DATASET_PREFIX)
{
listStrategies(request);
return;
}
if (COMMAND_UNSIGNED_NCOMPS <= commandNComps &&
commandNComps < COMMAND_SIGNED_NCOMPS)
{
NFD_LOG_DEBUG("command result: unsigned verb: " << command);
sendResponse(command, 401, "Signature required");
return;
}
else if (commandNComps < COMMAND_SIGNED_NCOMPS ||
!COMMAND_PREFIX.isPrefixOf(command))
{
NFD_LOG_DEBUG("command result: malformed");
sendResponse(command, 400, "Malformed command");
return;
}
validate(request,
bind(&StrategyChoiceManager::onValidatedStrategyChoiceRequest, this, _1),
bind(&ManagerBase::onCommandValidationFailed, this, _1, _2));
}
void
StrategyChoiceManager::listStrategies(const Interest& request)
{
m_listPublisher.publish();
}
void
StrategyChoiceManager::onValidatedStrategyChoiceRequest(const shared_ptr<const Interest>& request)
{
static const Name::Component VERB_SET("set");
static const Name::Component VERB_UNSET("unset");
const Name& command = request->getName();
const Name::Component& parameterComponent = command[COMMAND_PREFIX.size() + 1];
ControlParameters parameters;
if (!extractParameters(parameterComponent, parameters))
{
sendResponse(command, 400, "Malformed command");
return;
}
const Name::Component& verb = command[COMMAND_PREFIX.size()];
ControlResponse response;
if (verb == VERB_SET)
{
setStrategy(parameters, response);
}
else if (verb == VERB_UNSET)
{
unsetStrategy(parameters, response);
}
else
{
NFD_LOG_DEBUG("command result: unsupported verb: " << verb);
setResponse(response, 501, "Unsupported command");
}
sendResponse(command, response);
}
void
StrategyChoiceManager::setStrategy(ControlParameters& parameters,
ControlResponse& response)
{
ndn::nfd::StrategyChoiceSetCommand command;
if (!validateParameters(command, parameters))
{
NFD_LOG_DEBUG("strategy-choice result: FAIL reason: malformed");
setResponse(response, 400, "Malformed command");
return;
}
const Name& prefix = parameters.getName();
const Name& selectedStrategy = parameters.getStrategy();
if (!m_strategyChoice.hasStrategy(selectedStrategy))
{
NFD_LOG_DEBUG("strategy-choice result: FAIL reason: unknown-strategy: "
<< parameters.getStrategy());
setResponse(response, 504, "Unsupported strategy");
return;
}
if (m_strategyChoice.insert(prefix, selectedStrategy))
{
NFD_LOG_DEBUG("strategy-choice result: SUCCESS");
parameters.setStrategy(*m_strategyChoice.get(prefix));
setResponse(response, 200, "Success", parameters.wireEncode());
}
else
{
NFD_LOG_DEBUG("strategy-choice result: FAIL reason: not-installed");
setResponse(response, 405, "Strategy not installed");
}
}
void
StrategyChoiceManager::unsetStrategy(ControlParameters& parameters,
ControlResponse& response)
{
ndn::nfd::StrategyChoiceUnsetCommand command;
if (!validateParameters(command, parameters))
{
static const Name ROOT_PREFIX;
if (parameters.hasName() && parameters.getName() == ROOT_PREFIX)
{
NFD_LOG_DEBUG("strategy-choice result: FAIL reason: unset-root");
setResponse(response, 403, "Cannot unset root prefix strategy");
}
else
{
NFD_LOG_DEBUG("strategy-choice result: FAIL reason: malformed");
setResponse(response, 400, "Malformed command");
}
return;
}
m_strategyChoice.erase(parameters.getName());
NFD_LOG_DEBUG("strategy-choice result: SUCCESS");
setResponse(response, 200, "Success", parameters.wireEncode());
}
} // namespace nfd