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.

 **/

​

#include "zbxserver.h"

​

#include "log.h"

#include "zbxcachevalue.h"

#include "evalfunc.h"

#include "zbxeval.h"

#include "expression.h"

#include "zbxnum.h"

#include "zbxparam.h"

#include "zbxsysinfo.h"

#include "zbx_host_constants.h"

#include "zbx_item_constants.h"

​

#define ZBX_ITEM_QUERY_UNSET        0x0000

​

#define ZBX_ITEM_QUERY_HOST_SELF    0x0001

#define ZBX_ITEM_QUERY_HOST_ONE     0x0002

#define ZBX_ITEM_QUERY_HOST_ANY     0x0004

​

#define ZBX_ITEM_QUERY_KEY_ONE      0x0010

#define ZBX_ITEM_QUERY_KEY_SOME     0x0020

#define ZBX_ITEM_QUERY_KEY_ANY      0x0040

#define ZBX_ITEM_QUERY_FILTER       0x0100

​

#define ZBX_ITEM_QUERY_ERROR        0x8000

​

#define ZBX_ITEM_QUERY_MANY     (ZBX_ITEM_QUERY_HOST_ANY |\

                    ZBX_ITEM_QUERY_KEY_SOME | ZBX_ITEM_QUERY_KEY_ANY |\

                    ZBX_ITEM_QUERY_FILTER)

​

#define ZBX_ITEM_QUERY_ITEM_ANY     (ZBX_ITEM_QUERY_HOST_ANY | ZBX_ITEM_QUERY_KEY_ANY)

​

/* one item query data - index in hostkeys items */

typedef struct

{

    int dcitem_hk_index;

}

zbx_expression_query_one_t;

​

/* many items query data - matching itemids */

typedef struct

{

    zbx_vector_uint64_t itemids;

}

zbx_expression_query_many_t;

​

/* expression item query */

typedef struct

{

    /* query flags, see ZBX_ITEM_QUERY_* defines */

    zbx_uint32_t        flags;

​

    /* the item query /host/key?[filter] */

    zbx_item_query_t    ref;

​

    /* the query error */

    char            *error;

​

    /* the expression item query data, zbx_expression_query_one_t or zbx_expression_query_many_t */

    void            *data;

}

zbx_expression_query_t;

​

/* group - hostids cache */

typedef struct

{

    char            *name;

    zbx_vector_uint64_t hostids;

}

zbx_expression_group_t;

​

/* item - tags cache */

typedef struct