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<?php
/*
** Zabbix
** Copyright (C) 2001-2019 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.
**/
/**
* A parser for AD samAccountName or userPrincipalName parser.
*/
class CADNameAttributeParser extends CParser {
const ZBX_TYPE_UNKNOWN = 0;
const ZBX_TYPE_SAMA = 0x1;
const ZBX_TYPE_UPN = 0x2;
/**
* User name attribute type.
*
* @var int
*/
private $name_type;
/**
* @var string
*/
private $user_name;
/**
* @var string
*/
private $domain_name;
/**
* @var array
*/
private $options;
/**
* Create instance of parser.
*
* @param array $options Array of options.
* @param int $options['strict'] For sAMAccount name check length of parsed domain and user. Default false.
* @param int $options['nametype'] Bit mask what type of user name should be parsed.
* Default parse sAMAccountName and UserPrincipalName.
*/
public function __construct(array $options = []) {
$options += ['nametype' => self::ZBX_TYPE_SAMA | self::ZBX_TYPE_UPN];
$this->options = [
'strict' => array_key_exists('strict', $options) && (bool) $options['strict'],
'type_sama' => array_key_exists('nametype', $options) && ($options['nametype'] & self::ZBX_TYPE_SAMA),
'type_upn' => array_key_exists('nametype', $options) && ($options['nametype'] & self::ZBX_TYPE_UPN)
];
}
/**
* Parse given name attribute value.
*
* @param string $source Source string that needs to be parsed.
* @param int $pos Position offset.
*
* @return int
*/
public function parse($source, $pos = 0) {
$this->length = 0;
$this->user_name = '';
$this->domain_name = '';
$this->match = '';
$this->name_type = self::ZBX_TYPE_UNKNOWN;
if (($this->options['type_upn']) && $this->parseUserPrincipalName($source, $pos) == self::PARSE_SUCCESS) {
$this->name_type = self::ZBX_TYPE_UPN;
}
elseif ($this->options['type_sama'] && $this->parseSamAccountName($source, $pos) == self::PARSE_SUCCESS) {
$this->name_type = self::ZBX_TYPE_SAMA;
}
else {
return self::PARSE_FAIL;
}
return isset($source[$pos]) ? self::PARSE_SUCCESS_CONT : self::PARSE_SUCCESS;
}
/**
* Get parsed name attribute type.
*
* @return int
*/
public function getNameType() {
return $this->name_type;
}
/**
* Get parsed user name value.
*
* @return string|null
*/
public function getUserName() {
return ($this->name_type == self::ZBX_TYPE_UNKNOWN) ? null : $this->user_name;
}
/**
* Get parsed user domain name value.
*
* @return string|null
*/
public function getDomainName() {
return ($this->name_type == self::ZBX_TYPE_UNKNOWN) ? null : $this->domain_name;
}
/**
* Parse string searching for samAccountName.
* https://docs.microsoft.com/en-us/windows/desktop/ADSchema/a-samaccountname
* https://social.technet.microsoft.com/wiki/contents/articles/11216.active-directory-requirements-for-creating-objects.aspx
*
* @param string $source Source string that needs to be parsed.
* @param int $pos Position offset.
*
* @return int
*/
private function parseSamAccountName($source, &$pos) {
$strict = $this->options['strict'];
$regex = '/^(?<domain>[^\\\\\/\:\*\?\"\<\>]'.
($strict ? '{1,15}' : '+').
')\\\(?<user>[^\\\\\/\:\*\?\"\<\>@]'.
($strict ? '{1,20}' : '+').
')/i';
if (preg_match($regex, substr($source, $pos), $matches)) {
$this->length = strlen($matches[0]);
}
else {
return self::PARSE_FAIL;
}
$this->match = $matches[0];
$this->domain_name = $matches['domain'];
$this->user_name = $matches['user'];
$pos += $this->length;
return self::PARSE_SUCCESS;
}
/**
* Parse string searching for UserPrincipalName.
* https://docs.microsoft.com/en-us/windows/desktop/ADSchema/a-userprincipalname
*
* @param string $source Source string that needs to be parsed.
* @param int $pos Position offset.
*
* @return int
*/
private function parseUserPrincipalName($source, &$pos) {
$regex = '/^(?<user>[_a-z0-9-@]+(\.[_a-z0-9-]+)*)@(?<domain>[a-z0-9-]+(\.[a-z0-9-]+)*)/i';
if (preg_match($regex, substr($source, $pos), $matches)) {
$this->length = strlen($matches[0]);
}
else {
return self::PARSE_FAIL;
}
$this->match = $matches[0];
$this->domain_name = $matches['domain'];
$this->user_name = $matches['user'];
$pos += $this->length;
return self::PARSE_SUCCESS;
}
}
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