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 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 "checks_external.h"

​

#include "zbxexec.h"

#include "zbxsysinfo.h"

#include "zbxdbhigh.h"

#include "zbxstr.h"

​

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

 *                                                                            *

 * Purpose: retrieves data from script executed on Zabbix server              *

 *                                                                            *

 * Parameters:                                                                *

 *             item                    - [IN] item we are interested in       *

 *             config_externalscsripts - [IN]                                 *

 *             result                  - [OUT]                                *

 *                                                                            *

 * Return value: SUCCEED - data successfully retrieved and stored in result   *

 *                         and result_str (as string)                         *

 *               NOTSUPPORTED - requested item is not supported               *

 *                                                                            *

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

int get_value_external(const zbx_dc_item_t *item, const char *config_externalscripts, AGENT_RESULT *result)

{

    char        error[ZBX_ITEM_ERROR_LEN_MAX], *cmd = NULL, *buf = NULL;

    size_t      cmd_alloc = ZBX_KIBIBYTE, cmd_offset = 0;

    int     ret = NOTSUPPORTED;

    AGENT_REQUEST   request;

​

    zabbix_log(LOG_LEVEL_DEBUG, "In %s() key:'%s'", __func__, item->key);

​

    zbx_init_agent_request(&request);

​

    if (SUCCEED != zbx_parse_item_key(item->key, &request))

    {

        SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid item key format."));

        goto out;

    }

​

    cmd = (char *)zbx_malloc(cmd, cmd_alloc);

    zbx_snprintf_alloc(&cmd, &cmd_alloc, &cmd_offset, "%s/%s", config_externalscripts, get_rkey(&request));

​

    if (-1 == access(cmd, X_OK))

    {

        SET_MSG_RESULT(result, zbx_dsprintf(NULL, "%s: %s", cmd, zbx_strerror(errno)));

        goto out;

    }

​

    for (int i = 0; i < get_rparams_num(&request); i++)

    {