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/*
 *  anytun
 *
 *  The secure anycast tunneling protocol (satp) defines a protocol used
 *  for communication between any combination of unicast and anycast
 *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
 *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
 *  ethernet, ip, arp ...). satp directly includes cryptography and
 *  message authentication based on the methodes used by SRTP.  It is
 *  intended to deliver a generic, scaleable and secure solution for
 *  tunneling and relaying of packets of any protocol.
 *
 *
 *  Copyright (C) 2007-2008 Othmar Gsenger, Erwin Nindl, 
 *                          Christian Pointner <satp@wirdorange.org>
 *
 *  This file is part of Anytun.
 *
 *  Anytun is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 3 as
 *  published by the Free Software Foundation.
 *
 *  Anytun 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 anytun.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <iostream>
#include <string>
#include <boost/system/system_error.hpp>
#include "log.h"

#include "threadUtils.hpp"

Log* Log::inst = NULL;
Mutex Log::instMutex;
Log& cLog = Log::instance();

#ifndef NOCRYPT
#ifndef USE_SSL_CRYPTO
std::ostream& operator<<(std::ostream& stream, LogGpgError const& value) 
{
  char buf[STERROR_TEXT_MAX];
  buf[0] = 0;
  gpg_strerror_r(value.err_, buf, STERROR_TEXT_MAX);
  return stream << buf;
}
#endif
#endif
std::ostream& operator<<(std::ostream& stream, LogErrno const& value)
{
//	boost::system::system_error err(boost::system::error_code(value.err_,boost::system::get_system_category()));
	boost::system::system_error err(boost::system::error_code(value.err_,boost::system::get_posix_category()));
  return stream << err.what();
}

LogStringBuilder::LogStringBuilder(LogStringBuilder const& src) : log(src.log), prio(src.prio) 
{
  stream << src.stream.str();
}

LogStringBuilder::LogStringBuilder(Log& l, int p) : log(l), prio(p) 
{
      // do something on the start of the line.
}

LogStringBuilder::~LogStringBuilder() 
{
  Lock lock(log.mutex);
#ifndef NOSYSLOG
  syslog(prio | log.getFacility(), "%s", stream.str().c_str());  
#endif
}

Log& Log::instance()
{
  Lock lock(instMutex);
  static instanceCleaner c;
  if(!inst)
    inst = new Log();
  
  return *inst;
}

Log::Log()
{
  facility = FAC_DAEMON;
  logName = "anytun";
  open();
}

Log::~Log()
{
#ifndef NOSYSLOG
  closelog();
#endif
}

void Log::open()
{
#ifndef NOSYSLOG
  openlog(logName.c_str(), LOG_PID, facility);
#endif
}

Log& Log::setLogName(std::string newLogName)
{
  logName = newLogName;
  open();
  return *this;
}

Log& Log::setFacility(int newFacility)
{
  facility = newFacility;
  open();
  return *this;
}