147 lines
4.5 KiB
C++
147 lines
4.5 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
|
|
/**
|
|
* Copyright (c) 2014-2019, 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 "sequencing-manager.hpp"
|
|
#include "logger.hpp"
|
|
|
|
#include <string>
|
|
#include <iostream>
|
|
#include <fstream>
|
|
#include <pwd.h>
|
|
#include <cstdlib>
|
|
#include <unistd.h>
|
|
#include <boost/algorithm/string.hpp>
|
|
|
|
namespace nlsr {
|
|
|
|
INIT_LOGGER(SequencingManager);
|
|
|
|
SequencingManager::SequencingManager(std::string filePath, int hypState)
|
|
: m_nameLsaSeq(0)
|
|
, m_adjLsaSeq(0)
|
|
, m_corLsaSeq(0)
|
|
, m_hyperbolicState(hypState)
|
|
{
|
|
setSeqFileDirectory(filePath);
|
|
initiateSeqNoFromFile();
|
|
}
|
|
|
|
void
|
|
SequencingManager::writeSeqNoToFile() const
|
|
{
|
|
writeLog();
|
|
std::ofstream outputFile(m_seqFileNameWithPath.c_str());
|
|
std::ostringstream os;
|
|
os << "NameLsaSeq " << std::to_string(m_nameLsaSeq) << "\n"
|
|
<< "AdjLsaSeq " << std::to_string(m_adjLsaSeq) << "\n"
|
|
<< "CorLsaSeq " << std::to_string(m_corLsaSeq);
|
|
outputFile << os.str();
|
|
outputFile.close();
|
|
}
|
|
|
|
void
|
|
SequencingManager::initiateSeqNoFromFile()
|
|
{
|
|
NLSR_LOG_DEBUG("Seq File Name: " << m_seqFileNameWithPath);
|
|
std::ifstream inputFile(m_seqFileNameWithPath.c_str());
|
|
|
|
// Good checks that file is not (bad or eof or fail)
|
|
if (inputFile.good()) {
|
|
std::string lsaOrCombinedSeqNo;
|
|
uint64_t seqNo = 0;
|
|
|
|
// If file has a combined seq number, lsaOrCombinedSeqNo would hold it
|
|
// and seqNo will be zero everytime
|
|
inputFile >> lsaOrCombinedSeqNo >> seqNo;
|
|
m_nameLsaSeq = seqNo;
|
|
|
|
inputFile >> lsaOrCombinedSeqNo >> seqNo;
|
|
m_adjLsaSeq = seqNo;
|
|
|
|
inputFile >> lsaOrCombinedSeqNo >> seqNo;
|
|
m_corLsaSeq = seqNo;
|
|
|
|
// File was in old format and had a combined sequence number
|
|
// if all of the seqNo should are still zero and
|
|
// lsaOrCombinedSeqNo != CorLsaSeq
|
|
if (m_nameLsaSeq == 0 && m_adjLsaSeq == 0 && m_corLsaSeq == 0 &&
|
|
lsaOrCombinedSeqNo != "CorLsaSeq") {
|
|
NLSR_LOG_DEBUG("Old file had combined sequence number: " << lsaOrCombinedSeqNo);
|
|
std::istringstream iss(lsaOrCombinedSeqNo);
|
|
iss >> seqNo;
|
|
m_adjLsaSeq = (seqNo & 0xFFFFF);
|
|
m_corLsaSeq = ((seqNo >> 20) & 0xFFFFF);
|
|
m_nameLsaSeq = ((seqNo >> 40) & 0xFFFFFF);
|
|
}
|
|
|
|
inputFile.close();
|
|
|
|
m_nameLsaSeq += 10;
|
|
|
|
// Increment the adjacency LSA seq. no. if link-state or dry HR is enabled
|
|
if (m_hyperbolicState != HYPERBOLIC_STATE_ON) {
|
|
if (m_corLsaSeq != 0) {
|
|
NLSR_LOG_WARN("This router was previously configured for hyperbolic"
|
|
<< " routing without clearing the seq. no. file.");
|
|
m_corLsaSeq = 0;
|
|
}
|
|
m_adjLsaSeq += 10;
|
|
}
|
|
|
|
// Similarly, increment the coordinate LSA seq. no only if link-state is disabled.
|
|
if (m_hyperbolicState != HYPERBOLIC_STATE_OFF) {
|
|
if (m_adjLsaSeq != 0) {
|
|
NLSR_LOG_WARN("This router was previously configured for link-state"
|
|
<< " routing without clearing the seq. no. file.");
|
|
m_adjLsaSeq = 0;
|
|
}
|
|
m_corLsaSeq += 10;
|
|
}
|
|
}
|
|
writeLog();
|
|
}
|
|
|
|
void
|
|
SequencingManager::setSeqFileDirectory(const std::string& filePath)
|
|
{
|
|
m_seqFileNameWithPath = filePath;
|
|
|
|
if (m_seqFileNameWithPath.empty()) {
|
|
std::string homeDirPath(getpwuid(getuid())->pw_dir);
|
|
if (homeDirPath.empty()) {
|
|
homeDirPath = getenv("HOME");
|
|
}
|
|
m_seqFileNameWithPath = homeDirPath;
|
|
}
|
|
m_seqFileNameWithPath = m_seqFileNameWithPath + "/nlsrSeqNo.txt";
|
|
}
|
|
|
|
void
|
|
SequencingManager::writeLog() const
|
|
{
|
|
NLSR_LOG_DEBUG("----SequencingManager----");
|
|
NLSR_LOG_DEBUG("Adj LSA seq no: " << m_adjLsaSeq);
|
|
NLSR_LOG_DEBUG("Cor LSA Seq no: " << m_corLsaSeq);
|
|
NLSR_LOG_DEBUG("Name LSA Seq no: " << m_nameLsaSeq);
|
|
}
|
|
|
|
} // namespace nlsr
|