<?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 time period. */ class CTimePeriodParser extends CParser { /** * @var array */ private $macro_parsers = []; private $options = [ 'usermacros' => false, 'lldmacros' => false ]; public function __construct($options = []) { $this->options = $options + $this->options; if ($this->options['usermacros']) { array_push($this->macro_parsers, new CUserMacroParser, new CUserMacroFunctionParser); } if ($this->options['lldmacros']) { array_push($this->macro_parsers, new CLLDMacroParser, new CLLDMacroFunctionParser); } } /** * Parse the given period. * * @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 = ''; $p = $pos; foreach ($this->macro_parsers as $macro_parser) { if ($macro_parser->parse($source, $p) != self::PARSE_FAIL) { $p += $macro_parser->getLength(); break; } } if ($p == $pos && !self::parseTimePeriod($source, $p)) { return self::PARSE_FAIL; } $this->length = $p - $pos; $this->match = substr($source, $pos, $this->length); return isset($source[$p]) ? self::PARSE_SUCCESS_CONT : self::PARSE_SUCCESS; } /** * Parse time period. * * @param string $source * @param int $pos * * @return bool */ private static function parseTimePeriod($source, &$pos) { $pattern_wdays = '(?P<w_from>[1-7])(-(?P<w_till>[1-7]))?'; $pattern_hours = '(?P<h_from>[0-9]{1,2}):(?P<m_from>[0-9]{2})-(?P<h_till>[0-9]{1,2}):(?P<m_till>[0-9]{2})'; if (!preg_match('/^'.$pattern_wdays.','.$pattern_hours.'/', substr($source, $pos), $matches)) { return false; } if (($matches['w_till'] !== '' && $matches['w_from'] > $matches['w_till']) || $matches['m_from'] > 59 || $matches['m_till'] > 59) { return false; } $time_from = $matches['h_from'] * SEC_PER_HOUR + $matches['m_from'] * SEC_PER_MIN; $time_till = $matches['h_till'] * SEC_PER_HOUR + $matches['m_till'] * SEC_PER_MIN; if ($time_from >= $time_till || $time_till > 24 * SEC_PER_HOUR) { return false; } $pos += strlen($matches[0]); return true; } }