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<?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.
**/
/**
* Class is used to validate if given string is valid HashiCorp Vault secret.
*
* Valid token must match format:
* - <namespace>/<path/to/secret>:<key>
* - <namespace>/<path/to/secret>
*
* Mutlibyte strings are supported.
*/
class CVaultSecretParser extends CParser {
private $options = [
'with_key' => true
];
/**
* @param array $options
* @param bool $options['with_key'] (optional) Validated string must contain key.
*/
public function __construct(array $options = []) {
if (array_key_exists('with_key', $options)) {
$this->options['with_key'] = $options['with_key'];
}
}
/**
* @inheritDoc
*/
public function parse($source, $pos = 0) {
$this->errorClear();
$src_size = strlen($source);
$namespace_sep = strpos($source, '/');
if ($namespace_sep === false || $namespace_sep == 0 || $namespace_sep == $src_size - 1) {
$this->errorPos($source, 0);
return self::PARSE_FAIL;
}
if ($this->options['with_key']) {
$path_pos = $namespace_sep + 1;
$key_sep = strpos($source, ':', $path_pos);
if ($source[$key_sep - 1] === '/') {
$this->errorPos($source, $namespace_sep + 1);
return self::PARSE_FAIL;
}
if ($key_sep === false || $key_sep == $path_pos || $key_sep == $src_size - 1) {
$this->errorPos($source, $path_pos);
return self::PARSE_FAIL;
}
if (strrpos($source, '//', $key_sep - $src_size) !== false) {
$this->errorPos($source, $path_pos);
return self::PARSE_FAIL;
}
}
else {
if (strpos($source, '//') !== false) {
$this->errorPos($source, $namespace_sep + 1);
return self::PARSE_FAIL;
}
if ($source[$src_size - 1] === '/') {
$this->errorPos($source, $namespace_sep + 1);
return self::PARSE_FAIL;
}
}
return self::PARSE_SUCCESS;
}
}
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