/*
** Zabbix
** Copyright (C) 2001-2025 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_PREPROC_SNMP_H
#define ZABBIX_PREPROC_SNMP_H

#include "item_preproc.h"
#include "pp_cache.h"
#include "zbxalgo.h"

#ifdef HAVE_NETSNMP
#define SNMP_NO_DEBUGGING		/* disabling debugging messages from Net-SNMP library */
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#endif

typedef struct
{
	char	*field_name;
	char	*oid_prefix;
	int	format_flag;
}
zbx_snmp_walk_to_json_param_t;

ZBX_VECTOR_DECL(snmp_walk_to_json_param, zbx_snmp_walk_to_json_param_t)

typedef struct
{
	char		*key;
	char		*value;
}
zbx_snmp_walk_json_output_value_t;

ZBX_PTR_VECTOR_DECL(snmp_walk_to_json_output_val, zbx_snmp_walk_json_output_value_t *)

typedef enum
{
	ZBX_SNMP_TYPE_UNDEFINED,
	ZBX_SNMP_TYPE_HEX,
	ZBX_SNMP_TYPE_BITS,
	ZBX_SNMP_TYPE_STRING,
}
zbx_snmp_type_t;

typedef struct
{
	char		*oid;
	char		*value;
	zbx_snmp_type_t	type;
}
zbx_snmp_value_pair_t;

ZBX_PTR_VECTOR_DECL(snmp_value_pair, zbx_snmp_value_pair_t *)

typedef struct
{
	zbx_hashset_t	pairs;
}
zbx_snmp_value_cache_t;

typedef struct
{
	char				*key;
	zbx_vector_snmp_value_pair_t	values;
}
zbx_snmp_walk_json_output_obj_t;

int	zbx_snmp_value_cache_init(zbx_snmp_value_cache_t *cache, const char *data, char **error);
void	zbx_snmp_value_cache_clear(zbx_snmp_value_cache_t *cache);

int	item_preproc_snmp_walk_to_value(zbx_pp_cache_t *cache, zbx_variant_t *value, const char *params, char **errmsg);
int	item_preproc_snmp_walk_to_json(zbx_variant_t *value, const char *params, char **errmsg);

void	preproc_init_snmp(void);
void	preproc_shutdown_snmp(void);

#endif
