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<?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 IPv4 and IPv6 addresses
*/
class CIPParser extends CParser {
/**
* @var CIPv4Parser
*/
private $ipv4_parser;
/**
* @var CIPv6Parser
*/
private $ipv6_parser;
/**
* @var array
*/
private $macro_parsers = [];
/**
* Supported options:
* 'v6' => true Enabled support of IPv6 addresses;
* 'usermacros' => true Enabled support of user macros;
* 'lldmacros' => true Enabled support of LLD macros;
* 'macros' => true Enabled support of all macros. Allows array with list of macros.
*
* @var array
*/
private $options = [
'v6' => true,
'usermacros' => false,
'lldmacros' => false,
'macros' => []
];
/**
* @param array $options
*/
public function __construct(array $options) {
$this->options = $options + $this->options;
if ($this->options['v6']) {
$this->ipv6_parser = new CIPv6Parser();
}
if ($this->options['usermacros']) {
array_push($this->macro_parsers, new CUserMacroParser, new CUserMacroFunctionParser);
}
if ($this->options['lldmacros']) {
array_push($this->macro_parsers, new CLLDMacroParser, new CLLDMacroFunctionParser);
}
if ($this->options['macros']) {
array_push($this->macro_parsers,
new CMacroParser(['macros' => $this->options['macros']]),
new CMacroFunctionParser(['macros' => $this->options['macros']])
);
}
$this->ipv4_parser = new CIPv4Parser();
}
/**
* @param string $source
* @param int $pos
*
* @return bool
*/
public function parse($source, $pos = 0) {
$this->length = 0;
$this->match = '';
if ($this->ipv4_parser->parse($source, $pos) != self::PARSE_FAIL) {
$this->length = $this->ipv4_parser->getLength();
$this->match = $this->ipv4_parser->getMatch();
}
elseif ($this->options['v6'] && $this->ipv6_parser->parse($source, $pos) != self::PARSE_FAIL) {
$this->length = $this->ipv6_parser->getLength();
$this->match = $this->ipv6_parser->getMatch();
}
else {
foreach ($this->macro_parsers as $macro_parser) {
if ($macro_parser->parse($source, $pos) != self::PARSE_FAIL) {
$this->length = $macro_parser->getLength();
$this->match = $macro_parser->getMatch();
break;
}
}
}
if ($this->length == 0) {
return self::PARSE_FAIL;
}
return isset($source[$pos + $this->length]) ? self::PARSE_SUCCESS_CONT : self::PARSE_SUCCESS;
}
}
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