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 "zabbix_stats.h"

#include "zbxsysinfo.h"

​

#include "../sysinfo.h"

#include "zbxnum.h"

#include "zbxcomms.h"

#include "zbxjson.h"

​

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

 *                                                                            *

 * Purpose: checks whether JSON response is "success" or "failed"             *

 *                                                                            *

 * Parameters: response - [IN]                                                *

 *             result   - [OUT]                                               *

 *                                                                            *

 * Return value:  SUCCEED - processed successfully                            *

 *                FAIL - error occurred                                       *

 *                                                                            *

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

static int  check_response(const char *response, AGENT_RESULT *result)

{

    struct zbx_json_parse   jp;

    char            buffer[MAX_STRING_LEN];

​

    if (SUCCEED != zbx_json_open(response, &jp))

    {

        SET_MSG_RESULT(result, zbx_strdup(NULL, "Value should be a JSON object."));

        return FAIL;

    }

​

    if (SUCCEED != zbx_json_value_by_name(&jp, ZBX_PROTO_TAG_RESPONSE, buffer, sizeof(buffer), NULL))

    {

        SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot find tag: %s.", ZBX_PROTO_TAG_RESPONSE));

        return FAIL;

    }

​

    if (0 != strcmp(buffer, ZBX_PROTO_VALUE_SUCCESS))

    {

        if (SUCCEED != zbx_json_value_by_name(&jp, ZBX_PROTO_TAG_INFO, buffer, sizeof(buffer), NULL))

            SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot find tag: %s.", ZBX_PROTO_TAG_INFO));

        else

            SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain internal statistics: %s", buffer));

​

        return FAIL;

    }

​

    return SUCCEED;

}

​

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

 *                                                                            *

 * Purpose: sends Zabbix stats request and receives result data               *

 *                                                                            *

 * Parameters: json    - [IN] the request                                     *

 *             ip      - [IN] external Zabbix instance hostname               *

 *             port    - [IN] external Zabbix instance port                   *

 *             timeout - [IN] timeout value for comms                         *

 *             result  - [OUT] check result                                   *

 *                                                                            *

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

static void get_remote_zabbix_stats(const struct zbx_json *json, const char *ip, unsigned short port, int timeout,

        AGENT_RESULT *result)

{

    zbx_socket_t    s;

​

    if (SUCCEED == zbx_tcp_connect(&s, sysinfo_get_config_source_ip(), ip, port, timeout,

            ZBX_TCP_SEC_UNENCRYPTED, NULL, NULL))

    {

        if (SUCCEED == zbx_tcp_send(&s, json->buffer))

        {

            if (SUCCEED == zbx_tcp_recv(&s) && NULL != s.buffer)

            {

                if ('\0' == *s.buffer)

                {

                    SET_MSG_RESULT(result, zbx_strdup(NULL,

                            "Cannot obtain internal statistics: received empty response."));

                }