mirror of
https://github.com/torrentpier/torrentpier-lts.git
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761 lines
22 KiB
PHP
761 lines
22 KiB
PHP
<?php
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/**
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* Zend Framework (http://framework.zend.com/)
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*
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* @link http://github.com/zendframework/zf2 for the canonical source repository
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* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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namespace Zend\Ldap;
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use ArrayAccess;
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/**
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* Zend\Ldap\Dn provides an API for DN manipulation
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*/
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class Dn implements ArrayAccess
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{
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const ATTR_CASEFOLD_NONE = 'none';
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const ATTR_CASEFOLD_UPPER = 'upper';
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const ATTR_CASEFOLD_LOWER = 'lower';
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/**
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* The default case fold to use
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*
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* @var string
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*/
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protected static $defaultCaseFold = self::ATTR_CASEFOLD_NONE;
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/**
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* The case fold used for this instance
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*
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* @var string
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*/
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protected $caseFold;
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/**
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* The DN data
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*
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* @var array
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*/
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protected $dn;
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/**
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* Creates a DN from an array or a string
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*
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* @param string|array $dn
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* @param string|null $caseFold
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* @return Dn
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* @throws Exception\LdapException
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*/
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public static function factory($dn, $caseFold = null)
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{
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if (is_array($dn)) {
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return static::fromArray($dn, $caseFold);
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} elseif (is_string($dn)) {
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return static::fromString($dn, $caseFold);
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}
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throw new Exception\LdapException(null, 'Invalid argument type for $dn');
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}
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/**
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* Creates a DN from a string
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*
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* @param string $dn
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* @param string|null $caseFold
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* @return Dn
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* @throws Exception\LdapException
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*/
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public static function fromString($dn, $caseFold = null)
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{
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$dn = trim($dn);
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if (empty($dn)) {
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$dnArray = array();
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} else {
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$dnArray = static::explodeDn((string) $dn);
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}
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return new static($dnArray, $caseFold);
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}
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/**
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* Creates a DN from an array
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*
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* @param array $dn
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* @param string|null $caseFold
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* @return Dn
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* @throws Exception\LdapException
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*/
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public static function fromArray(array $dn, $caseFold = null)
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{
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return new static($dn, $caseFold);
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}
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/**
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* Constructor
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*
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* @param array $dn
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* @param string|null $caseFold
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*/
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protected function __construct(array $dn, $caseFold)
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{
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$this->dn = $dn;
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$this->setCaseFold($caseFold);
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}
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/**
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* Gets the RDN of the current DN
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*
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* @param string $caseFold
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* @return array
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* @throws Exception\LdapException if DN has no RDN (empty array)
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*/
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public function getRdn($caseFold = null)
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{
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$caseFold = static::sanitizeCaseFold($caseFold, $this->caseFold);
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return static::caseFoldRdn($this->get(0, 1, $caseFold), null);
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}
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/**
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* Gets the RDN of the current DN as a string
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*
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* @param string $caseFold
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* @return string
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* @throws Exception\LdapException if DN has no RDN (empty array)
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*/
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public function getRdnString($caseFold = null)
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{
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$caseFold = static::sanitizeCaseFold($caseFold, $this->caseFold);
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return static::implodeRdn($this->getRdn(), $caseFold);
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}
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/**
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* Get the parent DN $levelUp levels up the tree
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*
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* @param int $levelUp
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* @throws Exception\LdapException
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* @return Dn
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*/
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public function getParentDn($levelUp = 1)
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{
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$levelUp = (int) $levelUp;
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if ($levelUp < 1 || $levelUp >= count($this->dn)) {
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throw new Exception\LdapException(null, 'Cannot retrieve parent DN with given $levelUp');
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}
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$newDn = array_slice($this->dn, $levelUp);
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return new static($newDn, $this->caseFold);
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}
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/**
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* Get a DN part
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*
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* @param int $index
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* @param int $length
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* @param string $caseFold
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* @return array
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* @throws Exception\LdapException if index is illegal
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*/
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public function get($index, $length = 1, $caseFold = null)
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{
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$caseFold = static::sanitizeCaseFold($caseFold, $this->caseFold);
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$this->assertIndex($index);
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$length = (int) $length;
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if ($length <= 0) {
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$length = 1;
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}
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if ($length === 1) {
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return static::caseFoldRdn($this->dn[$index], $caseFold);
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}
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return static::caseFoldDn(array_slice($this->dn, $index, $length, false), $caseFold);
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}
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/**
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* Set a DN part
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*
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* @param int $index
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* @param array $value
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* @return Dn Provides a fluent interface
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* @throws Exception\LdapException if index is illegal
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*/
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public function set($index, array $value)
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{
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$this->assertIndex($index);
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static::assertRdn($value);
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$this->dn[$index] = $value;
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return $this;
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}
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/**
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* Remove a DN part
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*
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* @param int $index
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* @param int $length
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* @return Dn Provides a fluent interface
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* @throws Exception\LdapException if index is illegal
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*/
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public function remove($index, $length = 1)
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{
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$this->assertIndex($index);
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$length = (int) $length;
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if ($length <= 0) {
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$length = 1;
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}
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array_splice($this->dn, $index, $length, null);
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return $this;
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}
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/**
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* Append a DN part
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*
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* @param array $value
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* @return Dn Provides a fluent interface
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*/
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public function append(array $value)
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{
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static::assertRdn($value);
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$this->dn[] = $value;
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return $this;
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}
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/**
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* Prepend a DN part
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*
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* @param array $value
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* @return Dn Provides a fluent interface
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*/
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public function prepend(array $value)
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{
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static::assertRdn($value);
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array_unshift($this->dn, $value);
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return $this;
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}
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/**
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* Insert a DN part
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*
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* @param int $index
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* @param array $value
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* @return Dn Provides a fluent interface
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* @throws Exception\LdapException if index is illegal
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*/
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public function insert($index, array $value)
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{
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$this->assertIndex($index);
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static::assertRdn($value);
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$first = array_slice($this->dn, 0, $index + 1);
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$second = array_slice($this->dn, $index + 1);
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$this->dn = array_merge($first, array($value), $second);
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return $this;
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}
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/**
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* Assert index is correct and usable
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*
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* @param mixed $index
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* @return bool
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* @throws Exception\LdapException
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*/
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protected function assertIndex($index)
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{
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if (!is_int($index)) {
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throw new Exception\LdapException(null, 'Parameter $index must be an integer');
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}
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if ($index < 0 || $index >= count($this->dn)) {
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throw new Exception\LdapException(null, 'Parameter $index out of bounds');
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}
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return true;
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}
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/**
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* Assert if value is in a correct RDN format
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*
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* @param array $value
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* @return bool
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* @throws Exception\LdapException
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*/
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protected static function assertRdn(array $value)
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{
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if (count($value) < 1) {
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throw new Exception\LdapException(null, 'RDN Array is malformed: it must have at least one item');
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}
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foreach (array_keys($value) as $key) {
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if (!is_string($key)) {
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throw new Exception\LdapException(null, 'RDN Array is malformed: it must use string keys');
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}
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}
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}
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/**
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* Sets the case fold
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*
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* @param string|null $caseFold
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*/
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public function setCaseFold($caseFold)
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{
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$this->caseFold = static::sanitizeCaseFold($caseFold, static::$defaultCaseFold);
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}
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/**
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* Return DN as a string
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*
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* @param string $caseFold
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* @return string
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* @throws Exception\LdapException
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*/
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public function toString($caseFold = null)
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{
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$caseFold = static::sanitizeCaseFold($caseFold, $this->caseFold);
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return static::implodeDn($this->dn, $caseFold);
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}
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/**
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* Return DN as an array
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*
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* @param string $caseFold
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* @return array
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*/
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public function toArray($caseFold = null)
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{
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$caseFold = static::sanitizeCaseFold($caseFold, $this->caseFold);
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if ($caseFold === self::ATTR_CASEFOLD_NONE) {
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return $this->dn;
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}
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return static::caseFoldDn($this->dn, $caseFold);
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}
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/**
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* Do a case folding on a RDN
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*
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* @param array $part
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* @param string $caseFold
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* @return array
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*/
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protected static function caseFoldRdn(array $part, $caseFold)
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{
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switch ($caseFold) {
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case self::ATTR_CASEFOLD_UPPER:
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return array_change_key_case($part, CASE_UPPER);
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case self::ATTR_CASEFOLD_LOWER:
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return array_change_key_case($part, CASE_LOWER);
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case self::ATTR_CASEFOLD_NONE:
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default:
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return $part;
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}
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}
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/**
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* Do a case folding on a DN ort part of it
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*
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* @param array $dn
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* @param string $caseFold
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* @return array
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*/
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protected static function caseFoldDn(array $dn, $caseFold)
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{
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$return = array();
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foreach ($dn as $part) {
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$return[] = static::caseFoldRdn($part, $caseFold);
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}
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return $return;
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}
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/**
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* Cast to string representation {@see toString()}
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*
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* @return string
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*/
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public function __toString()
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{
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return $this->toString();
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}
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/**
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* Required by the ArrayAccess implementation
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*
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* @param int $offset
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* @return bool
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*/
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public function offsetExists($offset)
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{
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$offset = (int) $offset;
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if ($offset < 0 || $offset >= count($this->dn)) {
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return false;
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}
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return true;
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}
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/**
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* Proxy to {@see get()}
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* Required by the ArrayAccess implementation
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*
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* @param int $offset
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* @return array
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*/
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public function offsetGet($offset)
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{
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return $this->get($offset, 1, null);
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}
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/**
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* Proxy to {@see set()}
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* Required by the ArrayAccess implementation
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*
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* @param int $offset
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* @param array $value
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*/
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public function offsetSet($offset, $value)
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{
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$this->set($offset, $value);
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}
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/**
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* Proxy to {@see remove()}
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* Required by the ArrayAccess implementation
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*
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* @param int $offset
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*/
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public function offsetUnset($offset)
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{
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$this->remove($offset, 1);
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}
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/**
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* Sets the default case fold
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*
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* @param string $caseFold
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*/
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public static function setDefaultCaseFold($caseFold)
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{
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static::$defaultCaseFold = static::sanitizeCaseFold($caseFold, self::ATTR_CASEFOLD_NONE);
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}
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/**
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* Sanitizes the case fold
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*
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* @param string $caseFold
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* @param string $default
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* @return string
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*/
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protected static function sanitizeCaseFold($caseFold, $default)
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{
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switch ($caseFold) {
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case self::ATTR_CASEFOLD_NONE:
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case self::ATTR_CASEFOLD_UPPER:
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case self::ATTR_CASEFOLD_LOWER:
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return $caseFold;
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default:
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return $default;
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}
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}
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/**
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* Escapes a DN value according to RFC 2253
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*
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* Escapes the given VALUES according to RFC 2253 so that they can be safely used in LDAP DNs.
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* The characters ",", "+", """, "\", "<", ">", ";", "#", " = " with a special meaning in RFC 2252
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* are preceded by ba backslash. Control characters with an ASCII code < 32 are represented as \hexpair.
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* Finally all leading and trailing spaces are converted to sequences of \20.
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* @see Net_LDAP2_Util::escape_dn_value() from Benedikt Hallinger <beni@php.net>
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* @link http://pear.php.net/package/Net_LDAP2
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* @author Benedikt Hallinger <beni@php.net>
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*
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* @param string|array $values An array containing the DN values that should be escaped
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* @return array The array $values, but escaped
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*/
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public static function escapeValue($values = array())
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{
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if (!is_array($values)) {
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$values = array($values);
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}
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foreach ($values as $key => $val) {
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// Escaping of filter meta characters
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$val = str_replace(
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array('\\', ',', '+', '"', '<', '>', ';', '#', '='),
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array('\\\\', '\,', '\+', '\"', '\<', '\>', '\;', '\#', '\='), $val
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);
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$val = Converter\Converter::ascToHex32($val);
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// Convert all leading and trailing spaces to sequences of \20.
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if (preg_match('/^(\s*)(.+?)(\s*)$/', $val, $matches)) {
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$val = $matches[2];
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for ($i = 0, $len = strlen($matches[1]); $i < $len; $i++) {
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$val = '\20' . $val;
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}
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for ($i = 0, $len = strlen($matches[3]); $i < $len; $i++) {
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$val = $val . '\20';
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}
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}
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if (null === $val) {
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$val = '\0';
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} // apply escaped "null" if string is empty
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$values[$key] = $val;
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}
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return (count($values) == 1) ? $values[0] : $values;
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}
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/**
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* Undoes the conversion done by {@link escapeValue()}.
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*
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* Any escape sequence starting with a baskslash - hexpair or special character -
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* will be transformed back to the corresponding character.
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* @see Net_LDAP2_Util::escape_dn_value() from Benedikt Hallinger <beni@php.net>
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* @link http://pear.php.net/package/Net_LDAP2
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* @author Benedikt Hallinger <beni@php.net>
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*
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* @param string|array $values Array of DN Values
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* @return array Same as $values, but unescaped
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*/
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public static function unescapeValue($values = array())
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{
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if (!is_array($values)) {
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$values = array($values);
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}
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foreach ($values as $key => $val) {
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// strip slashes from special chars
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$val = str_replace(
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array('\\\\', '\,', '\+', '\"', '\<', '\>', '\;', '\#', '\='),
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array('\\', ',', '+', '"', '<', '>', ';', '#', '=', ), $val
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);
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$values[$key] = Converter\Converter::hex32ToAsc($val);
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}
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return (count($values) == 1) ? $values[0] : $values;
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}
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/**
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* Creates an array containing all parts of the given DN.
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*
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* Array will be of type
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* array(
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* array("cn" => "name1", "uid" => "user"),
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* array("cn" => "name2"),
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* array("dc" => "example"),
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* array("dc" => "org")
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* )
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* for a DN of cn=name1+uid=user,cn=name2,dc=example,dc=org.
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*
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* @param string $dn
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* @param array $keys An optional array to receive DN keys (e.g. CN, OU, DC, ...)
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* @param array $vals An optional array to receive DN values
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* @param string $caseFold
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* @return array
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* @throws Exception\LdapException
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*/
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public static function explodeDn(
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$dn, array &$keys = null, array &$vals = null,
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$caseFold = self::ATTR_CASEFOLD_NONE
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) {
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$k = array();
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$v = array();
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if (!self::checkDn($dn, $k, $v, $caseFold)) {
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throw new Exception\LdapException(null, 'DN is malformed');
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}
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$ret = array();
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for ($i = 0, $count = count($k); $i < $count; $i++) {
|
|
if (is_array($k[$i]) && is_array($v[$i]) && (($keyCount = count($k[$i])) === count($v[$i]))) {
|
|
$multi = array();
|
|
for ($j = 0; $j < $keyCount; $j++) {
|
|
$key = $k[$i][$j];
|
|
$val = $v[$i][$j];
|
|
$multi[$key] = $val;
|
|
}
|
|
$ret[] = $multi;
|
|
} elseif (is_string($k[$i]) && is_string($v[$i])) {
|
|
$ret[] = array($k[$i] => $v[$i]);
|
|
}
|
|
}
|
|
if ($keys !== null) {
|
|
$keys = $k;
|
|
}
|
|
if ($vals !== null) {
|
|
$vals = $v;
|
|
}
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* @param string $dn The DN to parse
|
|
* @param array $keys An optional array to receive DN keys (e.g. CN, OU, DC, ...)
|
|
* @param array $vals An optional array to receive DN values
|
|
* @param string $caseFold
|
|
* @return bool True if the DN was successfully parsed or false if the string is not a valid DN.
|
|
*/
|
|
public static function checkDn(
|
|
$dn, array &$keys = null, array &$vals = null,
|
|
$caseFold = self::ATTR_CASEFOLD_NONE
|
|
) {
|
|
/* This is a classic state machine parser. Each iteration of the
|
|
* loop processes one character. State 1 collects the key. When equals ( = )
|
|
* is encountered the state changes to 2 where the value is collected
|
|
* until a comma (,) or semicolon (;) is encountered after which we switch back
|
|
* to state 1. If a backslash (\) is encountered, state 3 is used to collect the
|
|
* following character without engaging the logic of other states.
|
|
*/
|
|
$slen = strlen($dn);
|
|
$state = 1;
|
|
$ko = $vo = 0;
|
|
$multi = false;
|
|
$ka = array();
|
|
$va = array();
|
|
for ($di = 0; $di <= $slen; $di++) {
|
|
$ch = ($di == $slen) ? 0 : $dn[$di];
|
|
switch ($state) {
|
|
case 1: // collect key
|
|
if ($ch === '=') {
|
|
$key = trim(substr($dn, $ko, $di - $ko));
|
|
if ($caseFold == self::ATTR_CASEFOLD_LOWER) {
|
|
$key = strtolower($key);
|
|
} elseif ($caseFold == self::ATTR_CASEFOLD_UPPER) {
|
|
$key = strtoupper($key);
|
|
}
|
|
if (is_array($multi)) {
|
|
$keyId = strtolower($key);
|
|
if (in_array($keyId, $multi)) {
|
|
return false;
|
|
}
|
|
$ka[count($ka) - 1][] = $key;
|
|
$multi[] = $keyId;
|
|
} else {
|
|
$ka[] = $key;
|
|
}
|
|
$state = 2;
|
|
$vo = $di + 1;
|
|
} elseif ($ch === ',' || $ch === ';' || $ch === '+') {
|
|
return false;
|
|
}
|
|
break;
|
|
case 2: // collect value
|
|
if ($ch === '\\') {
|
|
$state = 3;
|
|
} elseif ($ch === ',' || $ch === ';' || $ch === 0 || $ch === '+') {
|
|
$value = static::unescapeValue(trim(substr($dn, $vo, $di - $vo)));
|
|
if (is_array($multi)) {
|
|
$va[count($va) - 1][] = $value;
|
|
} else {
|
|
$va[] = $value;
|
|
}
|
|
$state = 1;
|
|
$ko = $di + 1;
|
|
if ($ch === '+' && $multi === false) {
|
|
$lastKey = array_pop($ka);
|
|
$lastVal = array_pop($va);
|
|
$ka[] = array($lastKey);
|
|
$va[] = array($lastVal);
|
|
$multi = array(strtolower($lastKey));
|
|
} elseif ($ch === ',' || $ch === ';' || $ch === 0) {
|
|
$multi = false;
|
|
}
|
|
} elseif ($ch === '=') {
|
|
return false;
|
|
}
|
|
break;
|
|
case 3: // escaped
|
|
$state = 2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ($keys !== null) {
|
|
$keys = $ka;
|
|
}
|
|
if ($vals !== null) {
|
|
$vals = $va;
|
|
}
|
|
|
|
return ($state === 1 && $ko > 0);
|
|
}
|
|
|
|
/**
|
|
* Returns a DN part in the form $attribute = $value
|
|
*
|
|
* This method supports the creation of multi-valued RDNs
|
|
* $part must contain an even number of elements.
|
|
*
|
|
* @param array $part
|
|
* @param string $caseFold
|
|
* @return string
|
|
* @throws Exception\LdapException
|
|
*/
|
|
public static function implodeRdn(array $part, $caseFold = null)
|
|
{
|
|
static::assertRdn($part);
|
|
$part = static::caseFoldRdn($part, $caseFold);
|
|
$rdnParts = array();
|
|
foreach ($part as $key => $value) {
|
|
$value = static::escapeValue($value);
|
|
$keyId = strtolower($key);
|
|
$rdnParts[$keyId] = implode('=', array($key, $value));
|
|
}
|
|
ksort($rdnParts, SORT_STRING);
|
|
|
|
return implode('+', $rdnParts);
|
|
}
|
|
|
|
/**
|
|
* Implodes an array in the form delivered by {@link explodeDn()}
|
|
* to a DN string.
|
|
*
|
|
* $dnArray must be of type
|
|
* array(
|
|
* array("cn" => "name1", "uid" => "user"),
|
|
* array("cn" => "name2"),
|
|
* array("dc" => "example"),
|
|
* array("dc" => "org")
|
|
* )
|
|
*
|
|
* @param array $dnArray
|
|
* @param string $caseFold
|
|
* @param string $separator
|
|
* @return string
|
|
* @throws Exception\LdapException
|
|
*/
|
|
public static function implodeDn(array $dnArray, $caseFold = null, $separator = ',')
|
|
{
|
|
$parts = array();
|
|
foreach ($dnArray as $p) {
|
|
$parts[] = static::implodeRdn($p, $caseFold);
|
|
}
|
|
|
|
return implode($separator, $parts);
|
|
}
|
|
|
|
/**
|
|
* Checks if given $childDn is beneath $parentDn subtree.
|
|
*
|
|
* @param string|Dn $childDn
|
|
* @param string|Dn $parentDn
|
|
* @return bool
|
|
*/
|
|
public static function isChildOf($childDn, $parentDn)
|
|
{
|
|
try {
|
|
$keys = array();
|
|
$vals = array();
|
|
if ($childDn instanceof Dn) {
|
|
$cdn = $childDn->toArray(DN::ATTR_CASEFOLD_LOWER);
|
|
} else {
|
|
$cdn = static::explodeDn($childDn, $keys, $vals, DN::ATTR_CASEFOLD_LOWER);
|
|
}
|
|
if ($parentDn instanceof Dn) {
|
|
$pdn = $parentDn->toArray(DN::ATTR_CASEFOLD_LOWER);
|
|
} else {
|
|
$pdn = static::explodeDn($parentDn, $keys, $vals, DN::ATTR_CASEFOLD_LOWER);
|
|
}
|
|
} catch (Exception\LdapException $e) {
|
|
return false;
|
|
}
|
|
|
|
$startIndex = count($cdn) - count($pdn);
|
|
if ($startIndex < 0) {
|
|
return false;
|
|
}
|
|
for ($i = 0, $count = count($pdn); $i < $count; $i++) {
|
|
if ($cdn[$i + $startIndex] != $pdn[$i]) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
}
|