Zabbix

/*

** Copyright (C) 2001-2024 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

#include "zbxmodules.h"

#include "module.h"

​

#include "zbxstr.h"

#include "zbxsysinfo.h"

#include "zbxalgo.h"

​

#define ZBX_MODULE_FUNC_INIT            "zbx_module_init"

#define ZBX_MODULE_FUNC_API_VERSION     "zbx_module_api_version"

#define ZBX_MODULE_FUNC_ITEM_LIST       "zbx_module_item_list"

#define ZBX_MODULE_FUNC_ITEM_PROCESS        "zbx_module_item_process"

#define ZBX_MODULE_FUNC_ITEM_TIMEOUT        "zbx_module_item_timeout"

#define ZBX_MODULE_FUNC_UNINIT          "zbx_module_uninit"

#define ZBX_MODULE_FUNC_HISTORY_WRITE_CBS   "zbx_module_history_write_cbs"

​

static zbx_vector_ptr_t modules;

​

zbx_history_float_cb_t      *history_float_cbs = NULL;

zbx_history_integer_cb_t    *history_integer_cbs = NULL;

zbx_history_string_cb_t     *history_string_cbs = NULL;

zbx_history_text_cb_t       *history_text_cbs = NULL;

zbx_history_log_cb_t        *history_log_cbs = NULL;

​

/******************************************************************************

 *                                                                            *

 * Purpose: add items supported by module                                     *

 *                                                                            *

 * Parameters: metrics       - list of items supported by module              *

 *             error         - error buffer                                   *

 *             max_error_len - error buffer size                              *

 *                                                                            *

 * Return value: SUCCEED - all module items were added or there were none     *

 *               FAIL    - otherwise                                          *

 *                                                                            *

 ******************************************************************************/

static int  zbx_register_module_items(zbx_metric_t *metrics, char *error, size_t max_error_len)

{

    int i;

​

    for (i = 0; NULL != metrics[i].key; i++)

    {

        /* accept only CF_HAVEPARAMS flag from module items */

        metrics[i].flags &= CF_HAVEPARAMS;

        /* the flag means that the items comes from a loadable module */

        metrics[i].flags |= CF_MODULE;

​

        if (SUCCEED != zbx_add_metric(&metrics[i], error, max_error_len))

            return FAIL;

    }

​

    return SUCCEED;

}

​

/******************************************************************************

 *                                                                            *

 * Purpose: add module to the list of successfully loaded modules             *

 *                                                                            *

 ******************************************************************************/

static zbx_module_t *zbx_register_module(void *lib, char *name)

{

    zbx_module_t    *module;

​

    module = (zbx_module_t *)zbx_malloc(NULL, sizeof(zbx_module_t));

    module->lib = lib;

    module->name = zbx_strdup(NULL, name);

    zbx_vector_ptr_append(&modules, module);

​

    return module;

}

​

/******************************************************************************

 *                                                                            *

 * Purpose: registers callback functions for history export                   *

 *                                                                            *

 * Parameters: module            - module pointer for later reference         *

 *             history_write_cbs - callbacks                                  *

 *                                                                            *