pam_usb/src/log.c

/*
 * Copyright (c) 2003-2007 Andrea Luzzardi <scox@sig11.org>
 *
 * This file is part of the pam_usb project. pam_usb is free software;
 * you can redistribute it and/or modify it under the terms of the GNU General
 * Public License version 2, as published by the Free Software Foundation.
 *
 * pam_usb 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., 59 Temple
 * Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <stdio.h>
#include <syslog.h>
#include <stdarg.h>
#include "conf.h"
#include "log.h"

static t_pusb_options	*pusb_opts = NULL;

static void	pusb_log_syslog(int level, const char *format, va_list ap)
{
  openlog("pam_usb", LOG_PID, LOG_AUTH);
  vsyslog(level, format, ap);
  closelog();
}

static void	pusb_log_output(int level, const char *format, va_list ap)
{
  if ((pusb_opts && !pusb_opts->quiet) ||
      level == LOG_ERR)
    {
      if (pusb_opts && pusb_opts->color_log)
	{
	  if (level == LOG_ERR)
	    fprintf(stderr, "\033[01;31m*\033[00m ");
	  else if (level == LOG_NOTICE)
	    fprintf(stderr, "\033[01;32m*\033[00m ");
	}
      else
	fprintf(stderr, "* ");
      vfprintf(stderr, format, ap);
    }
}

void		__log_debug(const char *file, int line, const char *fmt, ...)
{
  va_list	ap;

  if (!pusb_opts || !pusb_opts->debug)
    return ;
  fprintf(stderr, "[%s:%03d] ", file, line);
  va_start(ap, fmt);
  vfprintf(stderr, fmt, ap);
  va_end(ap);

  va_start(ap, fmt);
  pusb_log_syslog(LOG_DEBUG, fmt, ap);
  va_end(ap);
}

void		log_error(const char *fmt, ...)
{
  va_list	ap;

  va_start(ap, fmt);
  pusb_log_syslog(LOG_ERR, fmt, ap);
  va_end(ap);

  va_start(ap, fmt);
  pusb_log_output(LOG_ERR, fmt, ap);
  va_end(ap);
}

void		log_info(const char *fmt, ...)
{
  va_list	ap;

  va_start(ap, fmt);
  pusb_log_syslog(LOG_NOTICE, fmt, ap);
  va_end(ap);

  va_start(ap, fmt);
  pusb_log_output(LOG_NOTICE, fmt, ap);
  va_end(ap);
}

void		pusb_log_init(t_pusb_options *opts)
{
  pusb_opts = opts;
}