src/conf-file-processor.cpp - NLSR - Gitiles

 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
  * Copyright (c) 2014-2018,  The University of Memphis,
  *                           Regents of the University of California,
  *                           Arizona Board of Regents.
  *
  * This file is part of NLSR (Named-data Link State Routing).
  * See AUTHORS.md for complete list of NLSR authors and contributors.
  *
  * NLSR 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.
  *
  * NLSR 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
  * NLSR, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  **/

 #include "conf-file-processor.hpp"
 #include "conf-parameter.hpp"
 #include "adjacent.hpp"
 #include "utility/name-helper.hpp"
 #include "update/prefix-update-processor.hpp"

 #include <boost/cstdint.hpp>

 #include <ndn-cxx/name.hpp>
 #include <ndn-cxx/net/face-uri.hpp>

 #include <iostream>
 #include <fstream>

 namespace nlsr {

 template <class T>
 class ConfigurationVariable
 {
 public:
   typedef std::function<void(T)> ConfParameterCallback;
   typedef boost::property_tree::ptree ConfigSection;

   ConfigurationVariable(const std::string& key, const ConfParameterCallback& setter)
     : m_key(key)
     , m_setterCallback(setter)
     , m_minValue(0)
     , m_maxValue(0)
     , m_shouldCheckRange(false)
     , m_isRequired(true)
   {
   }

   bool
   parseFromConfigSection(const ConfigSection& section)
   {
     try {
       T value = section.get<T>(m_key);

       if (!isValidValue(value)) {
         return false;
       }

       m_setterCallback(value);
       return true;
     }
     catch (const std::exception& ex) {

       if (m_isRequired) {
         std::cerr << ex.what() << std::endl;
         std::cerr << "Missing required configuration variable" << std::endl;
         return false;
       }
       else {
         m_setterCallback(m_defaultValue);
         return true;
       }
     }

     return false;
   }

   void
   setMinAndMaxValue(T min, T max)
   {
     m_minValue = min;
     m_maxValue = max;
     m_shouldCheckRange = true;
   }

   void
   setOptional(T defaultValue)
   {
     m_isRequired = false;
     m_defaultValue = defaultValue;
   }

 private:
   void
   printOutOfRangeError(T value)
   {
     std::cerr << "Invalid value for " << m_key << ": "
               << value << ". "
               << "Valid values: "
               << m_minValue << " - "
               << m_maxValue << std::endl;
   }

   bool
   isValidValue(T value)
   {
     if (!m_shouldCheckRange) {
       return true;
     }
     else if (value < m_minValue || value > m_maxValue)
     {
       printOutOfRangeError(value);
       return false;
     }

     return true;
   }

 private:
   const std::string m_key;
   const ConfParameterCallback m_setterCallback;
   T m_defaultValue;

   T m_minValue;
   T m_maxValue;

   bool m_shouldCheckRange;
   bool m_isRequired;
 };

 bool
 ConfFileProcessor::processConfFile()
 {
   bool ret = true;
   std::ifstream inputFile;
   inputFile.open(m_confFileName.c_str());
   if (!inputFile.is_open()) {
     std::string msg = "Failed to read configuration file: ";
     msg += m_confFileName;
     std::cerr << msg << std::endl;
     return false;
   }
   ret = load(inputFile);
   inputFile.close();
   return ret;
 }

 bool
 ConfFileProcessor::load(std::istream& input)
 {
   ConfigSection pt;
   bool ret = true;
   try {
     boost::property_tree::read_info(input, pt);
   }
   catch (const boost::property_tree::info_parser_error& error) {
     std::stringstream msg;
     std::cerr << "Failed to parse configuration file " << std::endl;
     std::cerr << m_confFileName << std::endl;
     return false;
   }

   for (ConfigSection::const_iterator tn = pt.begin();
        tn != pt.end(); ++tn) {
     ret = processSection(tn->first, tn->second);
     if (ret == false) {
       break;
     }
   }
   return ret;
 }

 bool
 ConfFileProcessor::processSection(const std::string& sectionName, const ConfigSection& section)
 {
   bool ret = true;
   if (sectionName == "general")
   {
     ret = processConfSectionGeneral(section);
   }
   else if (sectionName == "neighbors")
   {
     ret = processConfSectionNeighbors(section);
   }
   else if (sectionName == "hyperbolic")
   {
     ret = processConfSectionHyperbolic(section);
   }
   else if (sectionName == "fib")
   {
     ret = processConfSectionFib(section);
   }
   else if (sectionName == "advertising")
   {
     ret = processConfSectionAdvertising(section);
   }
   else if (sectionName == "security")
   {
     ret = processConfSectionSecurity(section);
   }
   else
   {
     std::cerr << "Wrong configuration section: " << sectionName << std::endl;
   }
   return ret;
 }

 bool
 ConfFileProcessor::processConfSectionGeneral(const ConfigSection& section)
 {
   try {
     std::string network = section.get<std::string>("network");
     std::string site = section.get<std::string>("site");
     std::string router = section.get<std::string>("router");
     ndn::Name networkName(network);
     if (!networkName.empty()) {
       m_nlsr.getConfParameter().setNetwork(networkName);
     }
     else {
       std::cerr << " Network can not be null or empty or in bad URI format :(!" << std::endl;
       return false;
     }
     ndn::Name siteName(site);
     if (!siteName.empty()) {
       m_nlsr.getConfParameter().setSiteName(siteName);
     }
     else {
       std::cerr << "Site can not be null or empty or in bad URI format:( !" << std::endl;
       return false;
     }
     ndn::Name routerName(router);
     if (!routerName.empty()) {
       m_nlsr.getConfParameter().setRouterName(routerName);
     }
     else {
       std::cerr << " Router name can not be null or empty or in bad URI format:( !" << std::endl;
       return false;
     }
   }
   catch (const std::exception& ex) {
     std::cerr << ex.what() << std::endl;
     return false;
   }

   // lsa-refresh-time
   uint32_t lsaRefreshTime = section.get<uint32_t>("lsa-refresh-time", LSA_REFRESH_TIME_DEFAULT);

   if (lsaRefreshTime >= LSA_REFRESH_TIME_MIN && lsaRefreshTime <= LSA_REFRESH_TIME_MAX) {
     m_nlsr.getConfParameter().setLsaRefreshTime(lsaRefreshTime);
   }
   else {
     std::cerr << "Wrong value for lsa-refresh-time ";
     std::cerr << "Allowed value: " << LSA_REFRESH_TIME_MIN << "-";;
     std::cerr << LSA_REFRESH_TIME_MAX << std::endl;

     return false;
   }

   // router-dead-interval
   uint32_t routerDeadInterval = section.get<uint32_t>("router-dead-interval", (2*lsaRefreshTime));

   if (routerDeadInterval > m_nlsr.getConfParameter().getLsaRefreshTime()) {
     m_nlsr.getConfParameter().setRouterDeadInterval(routerDeadInterval);
   }
   else {
     std::cerr << "Value of router-dead-interval must be larger than lsa-refresh-time" << std::endl;
     return false;
   }

   // lsa-interest-lifetime
   int lifetime = section.get<int>("lsa-interest-lifetime", LSA_INTEREST_LIFETIME_DEFAULT);

   if (lifetime >= LSA_INTEREST_LIFETIME_MIN && lifetime <= LSA_INTEREST_LIFETIME_MAX) {
     m_nlsr.getConfParameter().setLsaInterestLifetime(ndn::time::seconds(lifetime));
   }
   else {
     std::cerr << "Wrong value for lsa-interest-timeout. "
               << "Allowed value:" << LSA_INTEREST_LIFETIME_MIN << "-"
               << LSA_INTEREST_LIFETIME_MAX << std::endl;

     return false;
   }

   uint32_t syncInterestLifetime = section.get<uint32_t>("sync-interest-lifetime", SYNC_INTEREST_LIFETIME_DEFAULT);
   if (syncInterestLifetime >= SYNC_INTEREST_LIFETIME_MIN &&
       syncInterestLifetime <= SYNC_INTEREST_LIFETIME_MAX) {
     m_nlsr.getConfParameter().setSyncInterestLifetime(syncInterestLifetime);
   }
   else {
     std::cerr << "Wrong value for sync-interest-lifetime. "
               << "Allowed value:" << SYNC_INTEREST_LIFETIME_MIN << "-"
               << SYNC_INTEREST_LIFETIME_MAX << std::endl;

     return false;
   }

   try {
     std::string seqDir = section.get<std::string>("seq-dir");
     if (boost::filesystem::exists(seqDir)) {
       if (boost::filesystem::is_directory(seqDir)) {
         std::string testFileName=seqDir+"/test.seq";
         std::ofstream testOutFile;
         testOutFile.open(testFileName.c_str());
         if (testOutFile.is_open() && testOutFile.good()) {
           m_nlsr.getConfParameter().setSeqFileDir(seqDir);
         }
         else {
           std::cerr << "User does not have read and write permission on the directory";
           std::cerr << std::endl;
           return false;
         }
         testOutFile.close();
         remove(testFileName.c_str());
       }
       else {
         std::cerr << "Provided path is not a directory" << std::endl;
         return false;
       }
     }
     else {
       std::cerr << "Provided sequence directory <" << seqDir << "> does not exist" << std::endl;
       return false;
     }
   }
   catch (const std::exception& ex) {
     std::cerr << "You must configure sequence directory" << std::endl;
     std::cerr << ex.what() << std::endl;
     return false;
   }

   return true;
 }

 bool
 ConfFileProcessor::processConfSectionNeighbors(const ConfigSection& section)
 {
   // hello-retries
   int retrials = section.get<int>("hello-retries", HELLO_RETRIES_DEFAULT);

   if (retrials >= HELLO_RETRIES_MIN && retrials <= HELLO_RETRIES_MAX) {
     m_nlsr.getConfParameter().setInterestRetryNumber(retrials);
   }
   else {
     std::cerr << "Wrong value for hello-retries." << std::endl;
     std::cerr << "Allowed value:" << HELLO_RETRIES_MIN << "-";
     std::cerr << HELLO_RETRIES_MAX << std::endl;

     return false;
   }

   // hello-timeout
   uint32_t timeOut = section.get<uint32_t>("hello-timeout", HELLO_TIMEOUT_DEFAULT);

   if (timeOut >= HELLO_TIMEOUT_MIN && timeOut <= HELLO_TIMEOUT_MAX) {
     m_nlsr.getConfParameter().setInterestResendTime(timeOut);
   }
   else {
     std::cerr << "Wrong value for hello-timeout. ";
     std::cerr << "Allowed value:" << HELLO_TIMEOUT_MIN << "-";
     std::cerr << HELLO_TIMEOUT_MAX << std::endl;

     return false;
   }

   // hello-interval
   uint32_t interval = section.get<uint32_t>("hello-interval", HELLO_INTERVAL_DEFAULT);

   if (interval >= HELLO_INTERVAL_MIN && interval <= HELLO_INTERVAL_MAX) {
     m_nlsr.getConfParameter().setInfoInterestInterval(interval);
   }
   else {
     std::cerr << "Wrong value for hello-interval. ";
     std::cerr << "Allowed value:" << HELLO_INTERVAL_MIN << "-";
     std::cerr << HELLO_INTERVAL_MAX << std::endl;

     return false;
   }

   // Event intervals
   // adj-lsa-build-interval
   ConfigurationVariable<uint32_t> adjLsaBuildInterval("adj-lsa-build-interval",
                                                       std::bind(&ConfParameter::setAdjLsaBuildInterval,
                                                       &m_nlsr.getConfParameter(), _1));
   adjLsaBuildInterval.setMinAndMaxValue(ADJ_LSA_BUILD_INTERVAL_MIN, ADJ_LSA_BUILD_INTERVAL_MAX);
   adjLsaBuildInterval.setOptional(ADJ_LSA_BUILD_INTERVAL_DEFAULT);

   if (!adjLsaBuildInterval.parseFromConfigSection(section)) {
     return false;
   }
   // Set the retry count for fetching the FaceStatus dataset
   ConfigurationVariable<uint32_t> faceDatasetFetchTries("face-dataset-fetch-tries",
                                                         std::bind(&ConfParameter::setFaceDatasetFetchTries,
                                                                   &m_nlsr.getConfParameter(),
                                                                   _1));

   faceDatasetFetchTries.setMinAndMaxValue(FACE_DATASET_FETCH_TRIES_MIN,
                                           FACE_DATASET_FETCH_TRIES_MAX);
   faceDatasetFetchTries.setOptional(FACE_DATASET_FETCH_TRIES_DEFAULT);

   if (!faceDatasetFetchTries.parseFromConfigSection(section)) {
     return false;
   }

   // Set the interval between FaceStatus dataset fetch attempts.
   ConfigurationVariable<uint32_t> faceDatasetFetchInterval("face-dataset-fetch-interval",
                                                            bind(&ConfParameter::setFaceDatasetFetchInterval,
                                                                 &m_nlsr.getConfParameter(),
                                                                 _1));

   faceDatasetFetchInterval.setMinAndMaxValue(FACE_DATASET_FETCH_INTERVAL_MIN,
                                              FACE_DATASET_FETCH_INTERVAL_MAX);
   faceDatasetFetchInterval.setOptional(FACE_DATASET_FETCH_INTERVAL_DEFAULT);

   if (!faceDatasetFetchInterval.parseFromConfigSection(section)) {
     return false;
   }

   // first-hello-interval
   ConfigurationVariable<uint32_t> firstHelloInterval("first-hello-interval",
                                                      std::bind(&ConfParameter::setFirstHelloInterval,
                                                      &m_nlsr.getConfParameter(), _1));
   firstHelloInterval.setMinAndMaxValue(FIRST_HELLO_INTERVAL_MIN, FIRST_HELLO_INTERVAL_MAX);
   firstHelloInterval.setOptional(FIRST_HELLO_INTERVAL_DEFAULT);

   if (!firstHelloInterval.parseFromConfigSection(section)) {
     return false;
   }

   for (ConfigSection::const_iterator tn =
            section.begin(); tn != section.end(); ++tn) {

     if (tn->first == "neighbor") {
       try {
         ConfigSection CommandAttriTree = tn->second;
         std::string name = CommandAttriTree.get<std::string>("name");
         std::string uriString = CommandAttriTree.get<std::string>("face-uri");

         ndn::FaceUri faceUri;
         if (! faceUri.parse(uriString)) {
           std::cerr << "parsing failed!" << std::endl;
           return false;
         }

         double linkCost = CommandAttriTree.get<double>("link-cost",
                                                        Adjacent::DEFAULT_LINK_COST);
         ndn::Name neighborName(name);
         if (!neighborName.empty()) {
           Adjacent adj(name, faceUri, linkCost, Adjacent::STATUS_INACTIVE, 0, 0);
           m_nlsr.getAdjacencyList().insert(adj);
         }
         else {
           std::cerr << " Wrong command format ! [name /nbr/name/ \n face-uri /uri\n]";
           std::cerr << " or bad URI format" << std::endl;
         }
       }
       catch (const std::exception& ex) {
         std::cerr << ex.what() << std::endl;
         return false;
       }
     }
   }
   return true;
 }

 bool
 ConfFileProcessor::processConfSectionHyperbolic(const ConfigSection& section)
 {
   // state
   std::string state = section.get<std::string>("state", "off");

   if (boost::iequals(state, "off")) {
     m_nlsr.getConfParameter().setHyperbolicState(HYPERBOLIC_STATE_OFF);
   }
   else if (boost::iequals(state, "on")) {
     m_nlsr.getConfParameter().setHyperbolicState(HYPERBOLIC_STATE_ON);
   }
   else if (state == "dry-run") {
     m_nlsr.getConfParameter().setHyperbolicState(HYPERBOLIC_STATE_DRY_RUN);
   }
   else {
     std::cerr << "Wrong format for hyperbolic state." << std::endl;
     std::cerr << "Allowed value: off, on, dry-run" << std::endl;

     return false;
   }

   try {
     // Radius and angle(s) are mandatory configuration parameters in hyperbolic section.
     // Even if router can have hyperbolic routing calculation off but other router
     // in the network may use hyperbolic routing calculation for FIB generation.
     // So each router need to advertise its hyperbolic coordinates in the network
     double radius = section.get<double>("radius");
     std::string angleString = section.get<std::string>("angle");

     std::stringstream ss(angleString);
     std::vector<double> angles;

     double angle;

     while (ss >> angle) {
       angles.push_back(angle);
       if (ss.peek() == ',' || ss.peek() == ' ') {
         ss.ignore();
       }
     }

     if (!m_nlsr.getConfParameter().setCorR(radius)) {
       return false;
     }
     m_nlsr.getConfParameter().setCorTheta(angles);
   }
   catch (const std::exception& ex) {
     std::cerr << ex.what() << std::endl;
     if (state == "on" || state == "dry-run") {
       return false;
     }
   }

   return true;
 }

 bool
 ConfFileProcessor::processConfSectionFib(const ConfigSection& section)
 {
   // max-faces-per-prefix
   int maxFacesPerPrefix = section.get<int>("max-faces-per-prefix", MAX_FACES_PER_PREFIX_DEFAULT);

   if (maxFacesPerPrefix >= MAX_FACES_PER_PREFIX_MIN &&
       maxFacesPerPrefix <= MAX_FACES_PER_PREFIX_MAX)
   {
     m_nlsr.getConfParameter().setMaxFacesPerPrefix(maxFacesPerPrefix);
   }
   else {
     std::cerr << "Wrong value for max-faces-per-prefix. ";
     std::cerr << MAX_FACES_PER_PREFIX_MIN << std::endl;

     return false;
   }

   // routing-calc-interval
   ConfigurationVariable<uint32_t> routingCalcInterval("routing-calc-interval",
                                                       std::bind(&ConfParameter::setRoutingCalcInterval,
                                                       &m_nlsr.getConfParameter(), _1));
   routingCalcInterval.setMinAndMaxValue(ROUTING_CALC_INTERVAL_MIN, ROUTING_CALC_INTERVAL_MAX);
   routingCalcInterval.setOptional(ROUTING_CALC_INTERVAL_DEFAULT);

   if (!routingCalcInterval.parseFromConfigSection(section)) {
     return false;
   }

   return true;
 }

 bool
 ConfFileProcessor::processConfSectionAdvertising(const ConfigSection& section)
 {
   for (ConfigSection::const_iterator tn =
          section.begin(); tn != section.end(); ++tn) {
    if (tn->first == "prefix") {
      try {
        std::string prefix = tn->second.data();
        ndn::Name namePrefix(prefix);
        if (!namePrefix.empty()) {
          m_nlsr.getNamePrefixList().insert(namePrefix);
        }
        else {
          std::cerr << " Wrong command format ! [prefix /name/prefix] or bad URI" << std::endl;
          return false;
        }
      }
      catch (const std::exception& ex) {
        std::cerr << ex.what() << std::endl;
        return false;
      }
     }
   }
   return true;
 }

 bool
 ConfFileProcessor::processConfSectionSecurity(const ConfigSection& section)
 {
   ConfigSection::const_iterator it = section.begin();

   if (it == section.end() || it->first != "validator") {
     std::cerr << "Error: Expect validator section!" << std::endl;
     return false;
   }

   m_nlsr.loadValidator(it->second, m_confFileName);

   it++;
   if (it != section.end() && it->first == "prefix-update-validator") {
     m_nlsr.getPrefixUpdateProcessor().loadValidator(it->second, m_confFileName);

     it++;
     for (; it != section.end(); it++) {
       using namespace boost::filesystem;

       if (it->first != "cert-to-publish") {
         std::cerr << "Error: Expect cert-to-publish!" << std::endl;
         return false;
       }

       std::string file = it->second.data();
       path certfilePath = absolute(file, path(m_confFileName).parent_path());
       std::shared_ptr<ndn::security::v2::Certificate> idCert =
         ndn::io::load<ndn::security::v2::Certificate>(certfilePath.string());

       if (idCert == nullptr) {
         std::cerr << "Error: Cannot load cert-to-publish: " << file << "!" << std::endl;
         return false;
       }

       m_nlsr.loadCertToPublish(*idCert);
     }
   }

   return true;
 }

 } // namespace nlsr
	/* -- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -- */
	/**
	* Copyright (c) 2014-2018, The University of Memphis,
	* Regents of the University of California,
	* Arizona Board of Regents.
	*
	* This file is part of NLSR (Named-data Link State Routing).
	* See AUTHORS.md for complete list of NLSR authors and contributors.
	*
	* NLSR 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.
	*
	* NLSR 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
	* NLSR, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
	**/

	#include "conf-file-processor.hpp"
	#include "conf-parameter.hpp"
	#include "adjacent.hpp"
	#include "utility/name-helper.hpp"
	#include "update/prefix-update-processor.hpp"

	#include <boost/cstdint.hpp>

	#include <ndn-cxx/name.hpp>
	#include <ndn-cxx/net/face-uri.hpp>

	#include <iostream>
	#include <fstream>

	namespace nlsr {

	template <class T>
	class ConfigurationVariable
	{
	public:
	typedef std::function<void(T)> ConfParameterCallback;
	typedef boost::property_tree::ptree ConfigSection;

	ConfigurationVariable(const std::string& key, const ConfParameterCallback& setter)
	: m_key(key)
	, m_setterCallback(setter)
	, m_minValue(0)
	, m_maxValue(0)
	, m_shouldCheckRange(false)
	, m_isRequired(true)
	{
	}

	bool
	parseFromConfigSection(const ConfigSection& section)
	{
	try {
	T value = section.get<T>(m_key);

	if (!isValidValue(value)) {
	return false;
	}

	m_setterCallback(value);
	return true;
	}
	catch (const std::exception& ex) {

	if (m_isRequired) {
	std::cerr << ex.what() << std::endl;
	std::cerr << "Missing required configuration variable" << std::endl;
	return false;
	}
	else {
	m_setterCallback(m_defaultValue);
	return true;
	}
	}

	return false;
	}

	void
	setMinAndMaxValue(T min, T max)
	{
	m_minValue = min;
	m_maxValue = max;
	m_shouldCheckRange = true;
	}

	void
	setOptional(T defaultValue)
	{
	m_isRequired = false;
	m_defaultValue = defaultValue;
	}

	private:
	void
	printOutOfRangeError(T value)
	{
	std::cerr << "Invalid value for " << m_key << ": "
	<< value << ". "
	<< "Valid values: "
	<< m_minValue << " - "
	<< m_maxValue << std::endl;
	}

	bool
	isValidValue(T value)
	{
	if (!m_shouldCheckRange) {
	return true;
	}
	else if (value < m_minValue \|\| value > m_maxValue)
	{
	printOutOfRangeError(value);
	return false;
	}

	return true;
	}

	private:
	const std::string m_key;
	const ConfParameterCallback m_setterCallback;
	T m_defaultValue;

	T m_minValue;
	T m_maxValue;

	bool m_shouldCheckRange;
	bool m_isRequired;
	};

	bool
	ConfFileProcessor::processConfFile()
	{
	bool ret = true;
	std::ifstream inputFile;
	inputFile.open(m_confFileName.c_str());
	if (!inputFile.is_open()) {
	std::string msg = "Failed to read configuration file: ";
	msg += m_confFileName;
	std::cerr << msg << std::endl;
	return false;
	}
	ret = load(inputFile);
	inputFile.close();
	return ret;
	}

	bool
	ConfFileProcessor::load(std::istream& input)
	{
	ConfigSection pt;
	bool ret = true;
	try {
	boost::property_tree::read_info(input, pt);
	}
	catch (const boost::property_tree::info_parser_error& error) {
	std::stringstream msg;
	std::cerr << "Failed to parse configuration file " << std::endl;
	std::cerr << m_confFileName << std::endl;
	return false;
	}

	for (ConfigSection::const_iterator tn = pt.begin();
	tn != pt.end(); ++tn) {
	ret = processSection(tn->first, tn->second);
	if (ret == false) {
	break;
	}
	}
	return ret;
	}

	bool
	ConfFileProcessor::processSection(const std::string& sectionName, const ConfigSection& section)
	{
	bool ret = true;
	if (sectionName == "general")
	{
	ret = processConfSectionGeneral(section);
	}
	else if (sectionName == "neighbors")
	{
	ret = processConfSectionNeighbors(section);
	}
	else if (sectionName == "hyperbolic")
	{
	ret = processConfSectionHyperbolic(section);
	}
	else if (sectionName == "fib")
	{
	ret = processConfSectionFib(section);
	}
	else if (sectionName == "advertising")
	{
	ret = processConfSectionAdvertising(section);
	}
	else if (sectionName == "security")
	{
	ret = processConfSectionSecurity(section);
	}
	else
	{
	std::cerr << "Wrong configuration section: " << sectionName << std::endl;
	}
	return ret;
	}

	bool
	ConfFileProcessor::processConfSectionGeneral(const ConfigSection& section)
	{
	try {
	std::string network = section.get<std::string>("network");
	std::string site = section.get<std::string>("site");
	std::string router = section.get<std::string>("router");
	ndn::Name networkName(network);
	if (!networkName.empty()) {
	m_nlsr.getConfParameter().setNetwork(networkName);
	}
	else {
	std::cerr << " Network can not be null or empty or in bad URI format :(!" << std::endl;
	return false;
	}
	ndn::Name siteName(site);
	if (!siteName.empty()) {
	m_nlsr.getConfParameter().setSiteName(siteName);
	}
	else {
	std::cerr << "Site can not be null or empty or in bad URI format:( !" << std::endl;
	return false;
	}
	ndn::Name routerName(router);
	if (!routerName.empty()) {
	m_nlsr.getConfParameter().setRouterName(routerName);
	}
	else {
	std::cerr << " Router name can not be null or empty or in bad URI format:( !" << std::endl;
	return false;
	}
	}
	catch (const std::exception& ex) {
	std::cerr << ex.what() << std::endl;
	return false;
	}

	// lsa-refresh-time
	uint32_t lsaRefreshTime = section.get<uint32_t>("lsa-refresh-time", LSA_REFRESH_TIME_DEFAULT);

	if (lsaRefreshTime >= LSA_REFRESH_TIME_MIN && lsaRefreshTime <= LSA_REFRESH_TIME_MAX) {
	m_nlsr.getConfParameter().setLsaRefreshTime(lsaRefreshTime);
	}
	else {
	std::cerr << "Wrong value for lsa-refresh-time ";
	std::cerr << "Allowed value: " << LSA_REFRESH_TIME_MIN << "-";;
	std::cerr << LSA_REFRESH_TIME_MAX << std::endl;

	return false;
	}

	// router-dead-interval
	uint32_t routerDeadInterval = section.get<uint32_t>("router-dead-interval", (2*lsaRefreshTime));

	if (routerDeadInterval > m_nlsr.getConfParameter().getLsaRefreshTime()) {
	m_nlsr.getConfParameter().setRouterDeadInterval(routerDeadInterval);
	}
	else {
	std::cerr << "Value of router-dead-interval must be larger than lsa-refresh-time" << std::endl;
	return false;
	}

	// lsa-interest-lifetime
	int lifetime = section.get<int>("lsa-interest-lifetime", LSA_INTEREST_LIFETIME_DEFAULT);

	if (lifetime >= LSA_INTEREST_LIFETIME_MIN && lifetime <= LSA_INTEREST_LIFETIME_MAX) {
	m_nlsr.getConfParameter().setLsaInterestLifetime(ndn::time::seconds(lifetime));
	}
	else {
	std::cerr << "Wrong value for lsa-interest-timeout. "
	<< "Allowed value:" << LSA_INTEREST_LIFETIME_MIN << "-"
	<< LSA_INTEREST_LIFETIME_MAX << std::endl;

	return false;
	}

	uint32_t syncInterestLifetime = section.get<uint32_t>("sync-interest-lifetime", SYNC_INTEREST_LIFETIME_DEFAULT);
	if (syncInterestLifetime >= SYNC_INTEREST_LIFETIME_MIN &&
	syncInterestLifetime <= SYNC_INTEREST_LIFETIME_MAX) {
	m_nlsr.getConfParameter().setSyncInterestLifetime(syncInterestLifetime);
	}
	else {
	std::cerr << "Wrong value for sync-interest-lifetime. "
	<< "Allowed value:" << SYNC_INTEREST_LIFETIME_MIN << "-"
	<< SYNC_INTEREST_LIFETIME_MAX << std::endl;

	return false;
	}

	try {
	std::string seqDir = section.get<std::string>("seq-dir");
	if (boost::filesystem::exists(seqDir)) {
	if (boost::filesystem::is_directory(seqDir)) {
	std::string testFileName=seqDir+"/test.seq";
	std::ofstream testOutFile;
	testOutFile.open(testFileName.c_str());
	if (testOutFile.is_open() && testOutFile.good()) {
	m_nlsr.getConfParameter().setSeqFileDir(seqDir);
	}
	else {
	std::cerr << "User does not have read and write permission on the directory";
	std::cerr << std::endl;
	return false;
	}
	testOutFile.close();
	remove(testFileName.c_str());
	}
	else {
	std::cerr << "Provided path is not a directory" << std::endl;
	return false;
	}
	}
	else {
	std::cerr << "Provided sequence directory <" << seqDir << "> does not exist" << std::endl;
	return false;
	}
	}
	catch (const std::exception& ex) {
	std::cerr << "You must configure sequence directory" << std::endl;
	std::cerr << ex.what() << std::endl;
	return false;
	}

	return true;
	}

	bool
	ConfFileProcessor::processConfSectionNeighbors(const ConfigSection& section)
	{
	// hello-retries
	int retrials = section.get<int>("hello-retries", HELLO_RETRIES_DEFAULT);

	if (retrials >= HELLO_RETRIES_MIN && retrials <= HELLO_RETRIES_MAX) {
	m_nlsr.getConfParameter().setInterestRetryNumber(retrials);
	}
	else {
	std::cerr << "Wrong value for hello-retries." << std::endl;
	std::cerr << "Allowed value:" << HELLO_RETRIES_MIN << "-";
	std::cerr << HELLO_RETRIES_MAX << std::endl;

	return false;
	}

	// hello-timeout
	uint32_t timeOut = section.get<uint32_t>("hello-timeout", HELLO_TIMEOUT_DEFAULT);

	if (timeOut >= HELLO_TIMEOUT_MIN && timeOut <= HELLO_TIMEOUT_MAX) {
	m_nlsr.getConfParameter().setInterestResendTime(timeOut);
	}
	else {
	std::cerr << "Wrong value for hello-timeout. ";
	std::cerr << "Allowed value:" << HELLO_TIMEOUT_MIN << "-";
	std::cerr << HELLO_TIMEOUT_MAX << std::endl;

	return false;
	}

	// hello-interval
	uint32_t interval = section.get<uint32_t>("hello-interval", HELLO_INTERVAL_DEFAULT);

	if (interval >= HELLO_INTERVAL_MIN && interval <= HELLO_INTERVAL_MAX) {
	m_nlsr.getConfParameter().setInfoInterestInterval(interval);
	}
	else {
	std::cerr << "Wrong value for hello-interval. ";
	std::cerr << "Allowed value:" << HELLO_INTERVAL_MIN << "-";
	std::cerr << HELLO_INTERVAL_MAX << std::endl;

	return false;
	}

	// Event intervals
	// adj-lsa-build-interval
	ConfigurationVariable<uint32_t> adjLsaBuildInterval("adj-lsa-build-interval",
	std::bind(&ConfParameter::setAdjLsaBuildInterval,
	&m_nlsr.getConfParameter(), _1));
	adjLsaBuildInterval.setMinAndMaxValue(ADJ_LSA_BUILD_INTERVAL_MIN, ADJ_LSA_BUILD_INTERVAL_MAX);
	adjLsaBuildInterval.setOptional(ADJ_LSA_BUILD_INTERVAL_DEFAULT);

	if (!adjLsaBuildInterval.parseFromConfigSection(section)) {
	return false;
	}
	// Set the retry count for fetching the FaceStatus dataset
	ConfigurationVariable<uint32_t> faceDatasetFetchTries("face-dataset-fetch-tries",
	std::bind(&ConfParameter::setFaceDatasetFetchTries,
	&m_nlsr.getConfParameter(),
	_1));

	faceDatasetFetchTries.setMinAndMaxValue(FACE_DATASET_FETCH_TRIES_MIN,
	FACE_DATASET_FETCH_TRIES_MAX);
	faceDatasetFetchTries.setOptional(FACE_DATASET_FETCH_TRIES_DEFAULT);

	if (!faceDatasetFetchTries.parseFromConfigSection(section)) {
	return false;
	}

	// Set the interval between FaceStatus dataset fetch attempts.
	ConfigurationVariable<uint32_t> faceDatasetFetchInterval("face-dataset-fetch-interval",
	bind(&ConfParameter::setFaceDatasetFetchInterval,
	&m_nlsr.getConfParameter(),
	_1));

	faceDatasetFetchInterval.setMinAndMaxValue(FACE_DATASET_FETCH_INTERVAL_MIN,
	FACE_DATASET_FETCH_INTERVAL_MAX);
	faceDatasetFetchInterval.setOptional(FACE_DATASET_FETCH_INTERVAL_DEFAULT);

	if (!faceDatasetFetchInterval.parseFromConfigSection(section)) {
	return false;
	}

	// first-hello-interval
	ConfigurationVariable<uint32_t> firstHelloInterval("first-hello-interval",
	std::bind(&ConfParameter::setFirstHelloInterval,
	&m_nlsr.getConfParameter(), _1));
	firstHelloInterval.setMinAndMaxValue(FIRST_HELLO_INTERVAL_MIN, FIRST_HELLO_INTERVAL_MAX);
	firstHelloInterval.setOptional(FIRST_HELLO_INTERVAL_DEFAULT);

	if (!firstHelloInterval.parseFromConfigSection(section)) {
	return false;
	}

	for (ConfigSection::const_iterator tn =
	section.begin(); tn != section.end(); ++tn) {

	if (tn->first == "neighbor") {
	try {
	ConfigSection CommandAttriTree = tn->second;
	std::string name = CommandAttriTree.get<std::string>("name");
	std::string uriString = CommandAttriTree.get<std::string>("face-uri");

	ndn::FaceUri faceUri;
	if (! faceUri.parse(uriString)) {
	std::cerr << "parsing failed!" << std::endl;
	return false;
	}

	double linkCost = CommandAttriTree.get<double>("link-cost",
	Adjacent::DEFAULT_LINK_COST);
	ndn::Name neighborName(name);
	if (!neighborName.empty()) {
	Adjacent adj(name, faceUri, linkCost, Adjacent::STATUS_INACTIVE, 0, 0);
	m_nlsr.getAdjacencyList().insert(adj);
	}
	else {
	std::cerr << " Wrong command format ! [name /nbr/name/ \n face-uri /uri\n]";
	std::cerr << " or bad URI format" << std::endl;
	}
	}
	catch (const std::exception& ex) {
	std::cerr << ex.what() << std::endl;
	return false;
	}
	}
	}
	return true;
	}

	bool
	ConfFileProcessor::processConfSectionHyperbolic(const ConfigSection& section)
	{
	// state
	std::string state = section.get<std::string>("state", "off");

	if (boost::iequals(state, "off")) {
	m_nlsr.getConfParameter().setHyperbolicState(HYPERBOLIC_STATE_OFF);
	}
	else if (boost::iequals(state, "on")) {
	m_nlsr.getConfParameter().setHyperbolicState(HYPERBOLIC_STATE_ON);
	}
	else if (state == "dry-run") {
	m_nlsr.getConfParameter().setHyperbolicState(HYPERBOLIC_STATE_DRY_RUN);
	}
	else {
	std::cerr << "Wrong format for hyperbolic state." << std::endl;
	std::cerr << "Allowed value: off, on, dry-run" << std::endl;

	return false;
	}

	try {
	// Radius and angle(s) are mandatory configuration parameters in hyperbolic section.
	// Even if router can have hyperbolic routing calculation off but other router
	// in the network may use hyperbolic routing calculation for FIB generation.
	// So each router need to advertise its hyperbolic coordinates in the network
	double radius = section.get<double>("radius");
	std::string angleString = section.get<std::string>("angle");

	std::stringstream ss(angleString);
	std::vector<double> angles;

	double angle;

	while (ss >> angle) {
	angles.push_back(angle);
	if (ss.peek() == ',' \|\| ss.peek() == ' ') {
	ss.ignore();
	}
	}

	if (!m_nlsr.getConfParameter().setCorR(radius)) {
	return false;
	}
	m_nlsr.getConfParameter().setCorTheta(angles);
	}
	catch (const std::exception& ex) {
	std::cerr << ex.what() << std::endl;
	if (state == "on" \|\| state == "dry-run") {
	return false;
	}
	}

	return true;
	}

	bool
	ConfFileProcessor::processConfSectionFib(const ConfigSection& section)
	{
	// max-faces-per-prefix
	int maxFacesPerPrefix = section.get<int>("max-faces-per-prefix", MAX_FACES_PER_PREFIX_DEFAULT);

	if (maxFacesPerPrefix >= MAX_FACES_PER_PREFIX_MIN &&
	maxFacesPerPrefix <= MAX_FACES_PER_PREFIX_MAX)
	{
	m_nlsr.getConfParameter().setMaxFacesPerPrefix(maxFacesPerPrefix);
	}
	else {
	std::cerr << "Wrong value for max-faces-per-prefix. ";
	std::cerr << MAX_FACES_PER_PREFIX_MIN << std::endl;

	return false;
	}

	// routing-calc-interval
	ConfigurationVariable<uint32_t> routingCalcInterval("routing-calc-interval",
	std::bind(&ConfParameter::setRoutingCalcInterval,
	&m_nlsr.getConfParameter(), _1));
	routingCalcInterval.setMinAndMaxValue(ROUTING_CALC_INTERVAL_MIN, ROUTING_CALC_INTERVAL_MAX);
	routingCalcInterval.setOptional(ROUTING_CALC_INTERVAL_DEFAULT);

	if (!routingCalcInterval.parseFromConfigSection(section)) {
	return false;
	}

	return true;
	}

	bool
	ConfFileProcessor::processConfSectionAdvertising(const ConfigSection& section)
	{
	for (ConfigSection::const_iterator tn =
	section.begin(); tn != section.end(); ++tn) {
	if (tn->first == "prefix") {
	try {
	std::string prefix = tn->second.data();
	ndn::Name namePrefix(prefix);
	if (!namePrefix.empty()) {
	m_nlsr.getNamePrefixList().insert(namePrefix);
	}
	else {
	std::cerr << " Wrong command format ! [prefix /name/prefix] or bad URI" << std::endl;
	return false;
	}
	}
	catch (const std::exception& ex) {
	std::cerr << ex.what() << std::endl;
	return false;
	}
	}
	}
	return true;
	}

	bool
	ConfFileProcessor::processConfSectionSecurity(const ConfigSection& section)
	{
	ConfigSection::const_iterator it = section.begin();

	if (it == section.end() \|\| it->first != "validator") {
	std::cerr << "Error: Expect validator section!" << std::endl;
	return false;
	}

	m_nlsr.loadValidator(it->second, m_confFileName);

	it++;
	if (it != section.end() && it->first == "prefix-update-validator") {
	m_nlsr.getPrefixUpdateProcessor().loadValidator(it->second, m_confFileName);

	it++;
	for (; it != section.end(); it++) {
	using namespace boost::filesystem;

	if (it->first != "cert-to-publish") {
	std::cerr << "Error: Expect cert-to-publish!" << std::endl;
	return false;
	}

	std::string file = it->second.data();
	path certfilePath = absolute(file, path(m_confFileName).parent_path());
	std::shared_ptr<ndn::security::v2::Certificate> idCert =
	ndn::io::load<ndn::security::v2::Certificate>(certfilePath.string());

	if (idCert == nullptr) {
	std::cerr << "Error: Cannot load cert-to-publish: " << file << "!" << std::endl;
	return false;
	}

	m_nlsr.loadCertToPublish(*idCert);
	}
	}

	return true;
	}

	} // namespace nlsr