Zabbix

<?php

/*

** Zabbix

** Copyright (C) 2001-2022 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.

**/

​

​

/**

 * Class is used to validate and parse a function.

 */

class CHistFunctionParser extends CParser {

​

    protected const STATE_NEW = 0;

    protected const STATE_END = 1;

    protected const STATE_QUOTED = 3;

    protected const STATE_END_OF_PARAMS = 4;

​

    public const PARAM_TYPE_QUERY = 0;

    public const PARAM_TYPE_PERIOD = 1;

    public const PARAM_TYPE_QUOTED = 2;

    public const PARAM_TYPE_UNQUOTED = 3;

​

    /**

     * An options array.

     *

     * Supported options:

     *   'usermacros' => false    Enable user macros usage in function parameters.

     *   'lldmacros' => false     Enable low-level discovery macros usage in function parameters.

     *   'host_macro' => false    Allow {HOST.HOST} macro as host name part in the query.

     *   'host_macro_n' => false  Allow {HOST.HOST} and {HOST.HOST<1-9>} macros as host name part in the query.

     *   'empty_host' => false    Allow empty hostname in the query string.

     *

     * @var array

     */

    private $options = [

        'usermacros' => false,

        'lldmacros' => false,

        'calculated' => false,

        'host_macro' => false,

        'host_macro_n' => false,

        'empty_host' => false

    ];

​

    private $query_parser;

    private $period_parser;

    private $user_macro_parser;

    private $lld_macro_parser;

    private $lld_macro_function_parser;

    private $time_parser;