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 "zbxexpr.h"

​

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

 *                                                                            *

 * Return value:  SUCCEED - char is allowed in macro name                     *

 *                FAIL    - otherwise                                         *

 *                                                                            *

 * Comments: allowed characters in macro names: '0-9A-Z._'                    *

 *           !!! Don't forget to sync the code with PHP !!!                   *

 *                                                                            *

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

int zbx_is_macro_char(unsigned char c)

{

    if (0 != isupper(c))

        return SUCCEED;

​

    if ('.' == c || '_' == c)

        return SUCCEED;

​

    if (0 != isdigit(c))

        return SUCCEED;

​

    return FAIL;

}

​

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

 *                                                                            *

 * Purpose: checks if name is valid discovery macro                           *

 *                                                                            *

 * Return value:  SUCCEED - name is valid discovery macro                     *

 *                FAIL    - otherwise                                         *

 *                                                                            *

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

int zbx_is_discovery_macro(const char *name)

{

    if ('{' != *name++ || '#' != *name++)

        return FAIL;

​

    do

    {

        if (SUCCEED != zbx_is_macro_char(*name++))

            return FAIL;

​

    } while ('}' != *name);