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 "zbxexpr.h"

​

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

 *                                                                            *

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

 *                FAIL    - otherwise                                         *

 *                                                                            *

 * Comments: in host name allowed characters: '0-9a-zA-Z. _-'                 *

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

 *                                                                            *

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

int zbx_is_hostname_char(unsigned char c)

{

    if (0 != isalnum(c))

        return SUCCEED;

​

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

        return SUCCEED;

​

    return FAIL;

}

​

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

 *                                                                            *

 * Purpose: returns hostname and key                                          *

 *          <hostname:>key                                                    *

 *                                                                            *

 * Parameters: exp  - [IN] pointer to first char of hostname                  *

 *                         host:key[key params]                               *

 *                         ^                                                  *

 *             host - [OUT]                                                   *

 *             key  - [OUT]                                                   *

 *                                                                            *

 * Return value: returns SUCCEED or FAIL                                      *

 *                                                                            *

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

int zbx_parse_host_key(char *exp, char **host, char **key)

{

    char    *p, *s;

​

    if (NULL == exp || '\0' == *exp)

        return FAIL;

​

    for (p = exp, s = exp; '\0' != *p; p++) /* check for optional hostname */

    {

        if (':' == *p)  /* hostname:vfs.fs.size[/,total]

                 * --------^

                 */

        {