/* Copyright (c) 1998-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998.

   This program 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; version 2 of the License, or

   (at your option) any later version.

   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, see <http://www.gnu.org/licenses/>.  */

#include <stdarg.h>

#include <stdio.h>

#include <string.h>

#include <syslog.h>

#include <unistd.h>

#include "dbg_log.h"

#include "nscd.h"

/* if in debug mode and we have a debug file, we write the messages to it,

   if in debug mode and no debug file, we write the messages to stderr,

   else to syslog.  */

static char *logfilename;

FILE *dbgout;

int debug_level;

void

set_logfile (const char *logfile)

{

  logfilename = strdup (logfile);

}

int

init_logfile (void)

{

  if (logfilename)

    {

      dbgout = fopen64 (logfilename, "a");

      return dbgout == NULL ? 0 : 1;

    }

  return 1;

}

void

dbg_log (const char *fmt,...)

{

  va_list ap;

  char msg2[512];

  va_start (ap, fmt);

  vsnprintf (msg2, sizeof (msg2), fmt, ap);

  if (debug_level > 0)

    {

      time_t t = time (NULL);

      struct tm now;

      localtime_r (&t, &now;;

      char buf[256];

      strftime (buf, sizeof (buf), "%c", &now;;

      char msg[1024];

      snprintf (msg, sizeof (msg), "%s - %d: %s%s", buf, getpid (), msg2,

		msg2[strlen (msg2) - 1] == '\n' ? "" : "\n");

      if (dbgout)

	{

	  fputs (msg, dbgout);

	  fflush (dbgout);

	}

      else

	fputs (msg, stderr);

    }

  else

    syslog (LOG_NOTICE, "%d %s", getpid (), msg2);

  va_end (ap);

}