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 "zbxexpression.h"

#include "macrofunc.h"

#include "expression.h"

​

#include "zbxexpr.h"

#include "zbxeval.h"

#include "zbxxml.h"

#include "zbxvariant.h"

#include "zbxregexp.h"

#include "zbxstr.h"

#include "zbxjson.h"

#include "zbxcacheconfig.h"

​

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

 *                                                                            *

 * Purpose: expand discovery macro in expression.                             *

 *                                                                            *

 * Parameters: data            - [IN/OUT] expression containing lld macro     *

 *             token           - [IN/OUT] token with lld macro location data  *

 *             flags           - [IN] flags passed to                         *

 *                                    subtitute_discovery_macros() function   *

 *             jp_row          - [IN] discovery data                          *

 *             lld_macro_paths - [IN]                                         *

 *             esc             - [IN] used in autoquoting for trigger         *

 *                                    prototypes                              *

 *                                                                            *

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

static void process_lld_macro_token(char **data, zbx_token_t *token, int flags, const struct zbx_json_parse *jp_row,

        const zbx_vector_lld_macro_path_t *lld_macro_paths, int esc)

{

    char    c, *replace_to = NULL;

    int l ,r;

​

    if (ZBX_TOKEN_LLD_FUNC_MACRO == token->type)

    {

        l = token->data.lld_func_macro.macro.l;

        r = token->data.lld_func_macro.macro.r;

    }

    else

    {

        l = token->loc.l;

        r = token->loc.r;

    }

​

    c = (*data)[r + 1];

    (*data)[r + 1] = '\0';

​

    if (SUCCEED != zbx_lld_macro_value_by_name(jp_row, lld_macro_paths, *data + l, &replace_to))

    {

        zabbix_log(LOG_LEVEL_DEBUG, "cannot substitute macro \"%s\": not found in value set", *data + l);

​

        (*data)[r + 1] = c;

        zbx_free(replace_to);

​

        return;

    }

​

    (*data)[r + 1] = c;

​

    if (ZBX_TOKEN_LLD_FUNC_MACRO == token->type)

    {

        if (SUCCEED != (zbx_calculate_macro_function(*data, &token->data.lld_func_macro, &replace_to)))

        {

            int len = token->data.lld_func_macro.func.r - token->data.lld_func_macro.func.l + 1;

​

            zabbix_log(LOG_LEVEL_DEBUG, "cannot execute function \"%.*s\"", len,

                    *data + token->data.lld_func_macro.func.l);

​

            zbx_free(replace_to);

​

            return;

        }