/***************************************************************************
 * nsock_log.c -- nsock logging infrastructure.                            *
 *                                                                         *
 ***********************IMPORTANT NSOCK LICENSE TERMS***********************
 *
 * The nsock parallel socket event library is (C) 1999-2024 Nmap Software LLC
 * This library is free software; you may redistribute and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
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 *
 * As a special exception to the GPL terms, Nmap Software LLC grants permission
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 ***************************************************************************/

/* $Id$ */


#ifndef NSOCK_LOG_H
#define NSOCK_LOG_H

#include "nsock.h"

extern nsock_loglevel_t NsockLogLevel;
extern nsock_logger_t   NsockLogger;


#define NSOCK_LOG_WRAP(lvl, ...)  \
    do { \
        if (NsockLogger && (lvl) >= NsockLogLevel) { \
            __nsock_log_internal((lvl), __FILE__, __LINE__, __func__, __VA_ARGS__); \
        } \
    } while (0)


static inline const char *nsock_loglevel2str(nsock_loglevel_t level)
{
  switch (level) {
    case NSOCK_LOG_DBG_ALL:
      return "FULL DEBUG";
    case NSOCK_LOG_DBG:
      return "DEBUG";
    case NSOCK_LOG_INFO:
      return "INFO";
    case NSOCK_LOG_ERROR:
      return "ERROR";
    default:
      return "???";
  }
}

/* -- Internal logging macros -- */
/**
 * Most detailed debug messages, like allocating or moving objects.
 */
#define nsock_log_debug_all(...) NSOCK_LOG_WRAP(NSOCK_LOG_DBG_ALL, __VA_ARGS__)

/**
 * Detailed debug messages, describing internal operations.
 */
#define nsock_log_debug(...)     NSOCK_LOG_WRAP(NSOCK_LOG_DBG, __VA_ARGS__)

/**
 * High level debug messages, describing top level operations and external
 * requests.
 */
#define nsock_log_info(...)      NSOCK_LOG_WRAP(NSOCK_LOG_INFO, __VA_ARGS__)

/**
 * Error messages.
 */
#define nsock_log_error(...)     NSOCK_LOG_WRAP(NSOCK_LOG_ERROR, __VA_ARGS__)


void __nsock_log_internal(nsock_loglevel_t loglevel, const char *file, int line,
                          const char *func, const char *format, ...)
                          __attribute__((format (printf, 5, 6)));

#endif /* NSOCK_LOG_H */