File: log_msg.c

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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <stdarg.h>
#include <syslog.h>
#include "log_msg.h"

/*
** Reports a message to stderr, if in debug mode, else to syslog
*/

int debug_flag = 0; /* per default no debug messages */

FILE *debug_output = NULL;

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

  if (debug_output == NULL)
    debug_output = stderr;

  va_start (ap, fmt);
  if (debug_flag)
    {
      vfprintf (debug_output, fmt, ap);
      fputc ('\n', debug_output);
      fflush (debug_output);
    }
  else
    {
#ifdef HAVE_VSYSLOG
      vsyslog (LOG_NOTICE, fmt, ap);
#else
      char msg[512];

      vsnprintf (msg, sizeof (msg), fmt, ap);
      msg[sizeof (msg) -1] = '\0';
      syslog (LOG_NOTICE, "%s", msg);
#endif
    }
  va_end (ap);
}