Zabbix

/*

** Zabbix

** Copyright (C) 2001-2023 Zabbix SIA

**

** 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; either 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, write to the Free Software

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

**/

​

#ifndef ZABBIX_LOG_H

#define ZABBIX_LOG_H

​

#include "zbxcommon.h"

​

#define LOG_LEVEL_EMPTY     0   /* printing nothing (if not LOG_LEVEL_INFORMATION set) */

#define LOG_LEVEL_CRIT      1

#define LOG_LEVEL_ERR       2

#define LOG_LEVEL_WARNING   3

#define LOG_LEVEL_DEBUG     4

#define LOG_LEVEL_TRACE     5

​

#define LOG_LEVEL_INFORMATION   127 /* printing in any case no matter what level set */

​

#define LOG_TYPE_UNDEFINED  0

#define LOG_TYPE_SYSTEM     1

#define LOG_TYPE_FILE       2

#define LOG_TYPE_CONSOLE    3

​

#define ZBX_OPTION_LOGTYPE_SYSTEM   "system"

#define ZBX_OPTION_LOGTYPE_FILE     "file"

#define ZBX_OPTION_LOGTYPE_CONSOLE  "console"

​

#define LOG_ENTRY_INTERVAL_DELAY    60  /* seconds */

​

extern int  zbx_log_level;

​

typedef struct

{

    char    *log_file_name;

    char    *log_type_str;

    int log_type;

    int log_file_size;

} zbx_config_log_t;

​

#define ZBX_CHECK_LOG_LEVEL(level)          \

        ((LOG_LEVEL_INFORMATION != (level) &&   \

        ((level) > zbx_log_level || LOG_LEVEL_EMPTY == (level))) ? FAIL : SUCCEED)

​

#ifdef HAVE___VA_ARGS__

#   define ZBX_ZABBIX_LOG_CHECK

#   define zabbix_log(level, ...)                                   \

                                                    \

    do                                              \

    {                                               \

        if (SUCCEED == ZBX_CHECK_LOG_LEVEL(level))                      \

            __zbx_zabbix_log(level, __VA_ARGS__);                       \

    }                                               \

    while (0)

#else

#   define zabbix_log __zbx_zabbix_log

#endif

​

int zabbix_open_log(const zbx_config_log_t *log_file_cfg, int level, char **error);

void    __zbx_zabbix_log(int level, const char *fmt, ...) __zbx_attr_format_printf(2, 3);

void    zabbix_close_log(void);

​

#ifndef _WINDOWS

int     zabbix_increase_log_level(void);

int     zabbix_decrease_log_level(void);

const char  *zabbix_get_log_level_string(void);

#endif

​

char        *strerror_from_system(unsigned long error);

​

#ifdef _WINDOWS

char        *strerror_from_module(unsigned long error, const wchar_t *module);

#endif

​

int     zbx_redirect_stdio(const char *filename);

​

void        zbx_handle_log(void);