Zabbix

<?php

/*

** 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/>.

**/

​

​

/**

 * A parser for update intervals.

 */

class CUpdateIntervalParser extends CParser {

​

    private $simple_interval_parser;

    private $flexible_interval_parser;

    private $scheduling_interval_parser;

​

    private $delay;

    private $intervals = [];

    private $options = [

        'usermacros' => false,

        'lldmacros' => false

    ];

​

    public function __construct($options = []) {

        if (array_key_exists('usermacros', $options)) {

            $this->options['usermacros'] = $options['usermacros'];

        }

        if (array_key_exists('lldmacros', $options)) {

            $this->options['lldmacros'] = $options['lldmacros'];

        }

​

        $this->simple_interval_parser = new CSimpleIntervalParser([

            'usermacros' => $this->options['usermacros'],

            'lldmacros' => $this->options['lldmacros']

        ]);

        $this->flexible_interval_parser = new CFlexibleIntervalParser([

            'usermacros' => $this->options['usermacros'],

            'lldmacros' => $this->options['lldmacros']

        ]);

        $this->scheduling_interval_parser = new CSchedulingIntervalParser([

            'usermacros' => $this->options['usermacros'],

            'lldmacros' => $this->options['lldmacros']

        ]);

    }

​

    /**

     * Parse the given source string. The string must contain simple interval and possibly more multiple intervals of

     * two types - flexible and scheduling - separated by a semicolon.

     *

     * (simple|{$M}|{#M});(flexible|scheduled|{$M}|{#M});...

     *

     * @param string $source  Source string that needs to be parsed.

     * @param int    $pos     Position offset.

     */

    public function parse($source, $pos = 0) {

        $this->length = 0;

        $this->match = '';

        $this->delay = '';

        $this->intervals = [];

​

        $p = $pos;

​

        // First interval must be simple interval (or macro). Other intervals may be mixed and repeat multiple times.

        if ($this->simple_interval_parser->parse($source, $p) == self::PARSE_FAIL) {

            $this->errorPos($source, $p);

​

            return self::PARSE_FAIL;

        }

        $p += $this->simple_interval_parser->getLength();

        $this->delay = $this->simple_interval_parser->getMatch();

​

        while (isset($source[$p]) && $source[$p] === ';') {

            $p++;

​

            if ($this->flexible_interval_parser->parse($source, $p) != self::PARSE_FAIL) {

                $p += $this->flexible_interval_parser->getLength();

​

                $this->intervals[] = [

                    'type' => ITEM_DELAY_FLEXIBLE,

                    'interval' => $this->flexible_interval_parser->getMatch(),

                    'update_interval' => $this->flexible_interval_parser->getUpdateInterval(),

                    'time_period' => $this->flexible_interval_parser->getTimePeriod()