<?php /* ** 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. **/ /** * Expression macros converter in event name field. */ class C52EventNameConverter extends C52TriggerExpressionConverter { public function __construct() { parent::__construct(); $this->parser = new C10TriggerExpression(['host_macro' => ['{HOST.HOST}']]); } /** * Convert event name. * * @param string $event_name Event name to convert. * * @return string */ public function convert($event_name) { $expression_macros = $this->getExpressionMacros($event_name); krsort($expression_macros, SORT_NUMERIC); foreach ($expression_macros as $pos => $expression_macro) { if (($this->parser->parse(substr($expression_macro, 2, -1), 0)) !== CParser::PARSE_FAIL) { $functions = $this->parser->result->getTokensByType( C10TriggerExprParserResult::TOKEN_TYPE_FUNCTION_MACRO ); foreach (array_reverse($functions) as $function) { if ($function['data']['host'] === '{HOST.HOST}' || $function['data']['host'] === '{HOST.HOST1}') { $function['data']['host'] = ''; } [$new_expr] = $this->convertFunction($function['data'], '', ''); $start = $pos + $function['pos'] + 2; $event_name = substr_replace($event_name, $new_expr, $start, strlen($function['value'])); } } } return $event_name; } /** * Extract expression macros with position in given string. * * @param string $value The string to search in. * * @return array */ private function getExpressionMacros(string $value): array { $expr_macro = new C10ExpressionMacroParser(); $expression_macros = []; $p = 0; while (isset($value[$p])) { if (substr($value, $p, 2) !== '{?') { $p++; continue; } if ($expr_macro->parse($value, $p) !== CParser::PARSE_FAIL) { $expression_macros[$p] = $expr_macro->getMatch(); $p += $expr_macro->getLength(); } else { $p++; } } return $expression_macros; } }