/*

 * This file is part of PowerDNS or dnsdist.

 * Copyright -- PowerDNS.COM B.V. and its contributors

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of version 2 of the GNU General Public License as

 * published by the Free Software Foundation.

 *

 * In addition, for the avoidance of any doubt, permission is granted to

 * link this program with OpenSSL and to (re)distribute the binaries

 * produced as the result of such linking.

 *

 * This program 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 this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 */

#include <mutex>

#include <sys/time.h>

#include "dolog.hh"

namespace dnsdist::logging

{

std::optional<std::ofstream> LoggingConfiguration::s_verboseStream{std::nullopt};

bool LoggingConfiguration::s_logTimestamps{false};

bool LoggingConfiguration::s_syslog{true};

void logTime(std::ostream& stream)

{

  std::array<char, 50> buffer{""};

  time_t now{};

  time(&now);

  struct tm localNow{};

  localtime_r(&now, &localNow);

  {

    // strftime is not thread safe, it can access locale information

    static std::mutex mutex;

    auto lock = std::scoped_lock(mutex);

    if (strftime(buffer.data(), buffer.size(), "%b %d %H:%M:%S ", &localNow) == 0) {

      buffer[0] = '\0';

    }

  }

  stream << buffer.data();

}

}