forked from GNUsocial/gnu-social
1803 lines
68 KiB
PHP
1803 lines
68 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4: */
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/**
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* File containing the Net_LDAP2 interface class.
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*
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* PHP version 5
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*
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* @category Net
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* @package Net_LDAP2
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* @author Tarjej Huse <tarjei@bergfald.no>
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* @author Jan Wagner <wagner@netsols.de>
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* @author Del <del@babel.com.au>
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* @author Benedikt Hallinger <beni@php.net>
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* @copyright 2003-2007 Tarjej Huse, Jan Wagner, Del Elson, Benedikt Hallinger
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* @license http://www.gnu.org/licenses/lgpl-3.0.txt LGPLv3
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* @version SVN: $Id: LDAP2.php 332308 2013-12-09 09:15:47Z beni $
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* @link http://pear.php.net/package/Net_LDAP2/
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*/
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/**
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* Package includes.
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*/
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require_once 'PEAR.php';
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require_once 'Net/LDAP2/RootDSE.php';
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require_once 'Net/LDAP2/Schema.php';
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require_once 'Net/LDAP2/Entry.php';
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require_once 'Net/LDAP2/Search.php';
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require_once 'Net/LDAP2/Util.php';
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require_once 'Net/LDAP2/Filter.php';
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require_once 'Net/LDAP2/LDIF.php';
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require_once 'Net/LDAP2/SchemaCache.interface.php';
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require_once 'Net/LDAP2/SimpleFileSchemaCache.php';
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/**
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* Error constants for errors that are not LDAP errors.
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*/
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define('NET_LDAP2_ERROR', 1000);
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/**
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* Net_LDAP2 Version
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*/
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define('NET_LDAP2_VERSION', '2.1.0');
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/**
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* Net_LDAP2 - manipulate LDAP servers the right way!
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*
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* @category Net
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* @package Net_LDAP2
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* @author Tarjej Huse <tarjei@bergfald.no>
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* @author Jan Wagner <wagner@netsols.de>
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* @author Del <del@babel.com.au>
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* @author Benedikt Hallinger <beni@php.net>
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* @copyright 2003-2007 Tarjej Huse, Jan Wagner, Del Elson, Benedikt Hallinger
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* @license http://www.gnu.org/copyleft/lesser.html LGPL
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* @link http://pear.php.net/package/Net_LDAP2/
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*/
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class Net_LDAP2 extends PEAR
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{
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/**
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* Class configuration array
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*
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* host = the ldap host to connect to
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* (may be an array of several hosts to try)
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* port = the server port
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* version = ldap version (defaults to v 3)
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* starttls = when set, ldap_start_tls() is run after connecting.
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* bindpw = no explanation needed
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* binddn = the DN to bind as.
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* basedn = ldap base
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* options = hash of ldap options to set (opt => val)
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* filter = default search filter
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* scope = default search scope
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*
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* Newly added in 2.0.0RC4, for auto-reconnect:
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* auto_reconnect = if set to true then the class will automatically
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* attempt to reconnect to the LDAP server in certain
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* failure conditionswhen attempting a search, or other
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* LDAP operation. Defaults to false. Note that if you
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* set this to true, calls to search() may block
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* indefinitely if there is a catastrophic server failure.
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* min_backoff = minimum reconnection delay period (in seconds).
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* current_backoff = initial reconnection delay period (in seconds).
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* max_backoff = maximum reconnection delay period (in seconds).
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*
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* @access protected
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* @var array
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*/
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protected $_config = array('host' => 'localhost',
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'port' => 389,
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'version' => 3,
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'starttls' => false,
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'binddn' => '',
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'bindpw' => '',
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'basedn' => '',
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'options' => array(),
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'filter' => '(objectClass=*)',
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'scope' => 'sub',
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'auto_reconnect' => false,
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'min_backoff' => 1,
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'current_backoff' => 1,
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'max_backoff' => 32);
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/**
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* List of hosts we try to establish a connection to
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*
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* @access protected
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* @var array
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*/
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protected $_host_list = array();
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/**
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* List of hosts that are known to be down.
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*
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* @access protected
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* @var array
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*/
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protected $_down_host_list = array();
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/**
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* LDAP resource link.
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*
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* @access protected
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* @var resource
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*/
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protected $_link = false;
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/**
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* Net_LDAP2_Schema object
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*
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* This gets set and returned by {@link schema()}
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*
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* @access protected
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* @var object Net_LDAP2_Schema
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*/
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protected $_schema = null;
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/**
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* Schema cacher function callback
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*
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* @see registerSchemaCache()
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* @var string
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*/
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protected $_schema_cache = null;
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/**
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* Cache for attribute encoding checks
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*
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* @access protected
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* @var array Hash with attribute names as key and boolean value
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* to determine whether they should be utf8 encoded or not.
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*/
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protected $_schemaAttrs = array();
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/**
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* Cache for rootDSE objects
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*
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* Hash with requested rootDSE attr names as key and rootDSE object as value
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*
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* Since the RootDSE object itself may request a rootDSE object,
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* {@link rootDse()} caches successful requests.
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* Internally, Net_LDAP2 needs several lookups to this object, so
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* caching increases performance significally.
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*
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* @access protected
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* @var array
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*/
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protected $_rootDSE_cache = array();
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/**
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* Returns the Net_LDAP2 Release version, may be called statically
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*
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* @static
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* @return string Net_LDAP2 version
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*/
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public static function getVersion()
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{
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return NET_LDAP2_VERSION;
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}
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/**
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* Configure Net_LDAP2, connect and bind
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*
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* Use this method as starting point of using Net_LDAP2
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* to establish a connection to your LDAP server.
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*
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* Static function that returns either an error object or the new Net_LDAP2
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* object. Something like a factory. Takes a config array with the needed
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* parameters.
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*
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* @param array $config Configuration array
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*
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* @access public
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* @return Net_LDAP2_Error|Net_LDAP2 Net_LDAP2_Error or Net_LDAP2 object
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*/
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public static function &connect($config = array())
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{
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$ldap_check = self::checkLDAPExtension();
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if (self::iserror($ldap_check)) {
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return $ldap_check;
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}
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@$obj = new Net_LDAP2($config);
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// todo? better errorhandling for setConfig()?
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// connect and bind with credentials in config
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$err = $obj->bind();
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if (self::isError($err)) {
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return $err;
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}
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return $obj;
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}
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/**
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* Net_LDAP2 constructor
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*
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* Sets the config array
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*
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* Please note that the usual way of getting Net_LDAP2 to work is
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* to call something like:
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* <code>$ldap = Net_LDAP2::connect($ldap_config);</code>
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*
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* @param array $config Configuration array
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*
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* @access protected
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* @return void
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* @see $_config
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*/
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public function __construct($config = array())
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{
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$this->PEAR('Net_LDAP2_Error');
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$this->setConfig($config);
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}
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/**
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* Sets the internal configuration array
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*
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* @param array $config Configuration array
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*
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* @access protected
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* @return void
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*/
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protected function setConfig($config)
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{
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//
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// Parameter check -- probably should raise an error here if config
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// is not an array.
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//
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if (! is_array($config)) {
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return;
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}
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foreach ($config as $k => $v) {
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if (isset($this->_config[$k])) {
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$this->_config[$k] = $v;
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} else {
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// map old (Net_LDAP2) parms to new ones
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switch($k) {
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case "dn":
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$this->_config["binddn"] = $v;
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break;
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case "password":
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$this->_config["bindpw"] = $v;
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break;
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case "tls":
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$this->_config["starttls"] = $v;
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break;
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case "base":
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$this->_config["basedn"] = $v;
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break;
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}
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}
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}
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//
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// Ensure the host list is an array.
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//
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if (is_array($this->_config['host'])) {
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$this->_host_list = $this->_config['host'];
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} else {
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if (strlen($this->_config['host']) > 0) {
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$this->_host_list = array($this->_config['host']);
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} else {
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$this->_host_list = array();
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// ^ this will cause an error in performConnect(),
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// so the user is notified about the failure
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}
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}
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//
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// Reset the down host list, which seems like a sensible thing to do
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// if the config is being reset for some reason.
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//
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$this->_down_host_list = array();
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}
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/**
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* Bind or rebind to the ldap-server
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*
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* This function binds with the given dn and password to the server. In case
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* no connection has been made yet, it will be started and startTLS issued
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* if appropiate.
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*
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* The internal bind configuration is not being updated, so if you call
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* bind() without parameters, you can rebind with the credentials
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* provided at first connecting to the server.
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*
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* @param string $dn Distinguished name for binding
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* @param string $password Password for binding
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*
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* @access public
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* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
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*/
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public function bind($dn = null, $password = null)
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{
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// fetch current bind credentials
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if (is_null($dn)) {
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$dn = $this->_config["binddn"];
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}
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if (is_null($password)) {
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$password = $this->_config["bindpw"];
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}
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// Connect first, if we haven't so far.
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// This will also bind us to the server.
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if ($this->_link === false) {
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// store old credentials so we can revert them later
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// then overwrite config with new bind credentials
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$olddn = $this->_config["binddn"];
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$oldpw = $this->_config["bindpw"];
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// overwrite bind credentials in config
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// so performConnect() knows about them
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$this->_config["binddn"] = $dn;
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$this->_config["bindpw"] = $password;
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// try to connect with provided credentials
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$msg = $this->performConnect();
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// reset to previous config
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$this->_config["binddn"] = $olddn;
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$this->_config["bindpw"] = $oldpw;
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// see if bind worked
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if (self::isError($msg)) {
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return $msg;
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}
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} else {
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// do the requested bind as we are
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// asked to bind manually
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if (is_null($dn)) {
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// anonymous bind
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$msg = @ldap_bind($this->_link);
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} else {
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// privileged bind
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$msg = @ldap_bind($this->_link, $dn, $password);
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}
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if (false === $msg) {
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return PEAR::raiseError("Bind failed: " .
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@ldap_error($this->_link),
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@ldap_errno($this->_link));
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}
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}
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return true;
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}
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/**
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* Connect to the ldap-server
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*
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* This function connects to the LDAP server specified in
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* the configuration, binds and set up the LDAP protocol as needed.
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*
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* @access protected
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* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
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*/
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protected function performConnect()
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{
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// Note: Connecting is briefly described in RFC1777.
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// Basicly it works like this:
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// 1. set up TCP connection
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// 2. secure that connection if neccessary
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// 3a. setLDAPVersion to tell server which version we want to speak
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// 3b. perform bind
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// 3c. setLDAPVersion to tell server which version we want to speak
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// together with a test for supported versions
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// 4. set additional protocol options
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// Return true if we are already connected.
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if ($this->_link !== false) {
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return true;
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}
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// Connnect to the LDAP server if we are not connected. Note that
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// with some LDAP clients, ldapperformConnect returns a link value even
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// if no connection is made. We need to do at least one anonymous
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// bind to ensure that a connection is actually valid.
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//
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// Ref: http://www.php.net/manual/en/function.ldap-connect.php
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// Default error message in case all connection attempts
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// fail but no message is set
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$current_error = new PEAR_Error('Unknown connection error');
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// Catch empty $_host_list arrays.
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if (!is_array($this->_host_list) || count($this->_host_list) == 0) {
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$current_error = PEAR::raiseError('No Servers configured! Please '.
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'pass in an array of servers to Net_LDAP2');
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return $current_error;
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}
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// Cycle through the host list.
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foreach ($this->_host_list as $host) {
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// Ensure we have a valid string for host name
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if (is_array($host)) {
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$current_error = PEAR::raiseError('No Servers configured! '.
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'Please pass in an one dimensional array of servers to '.
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'Net_LDAP2! (multidimensional array detected!)');
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continue;
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}
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// Skip this host if it is known to be down.
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if (in_array($host, $this->_down_host_list)) {
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continue;
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}
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// Record the host that we are actually connecting to in case
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// we need it later.
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$this->_config['host'] = $host;
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// Attempt a connection.
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$this->_link = @ldap_connect($host, $this->_config['port']);
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if (false === $this->_link) {
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$current_error = PEAR::raiseError('Could not connect to ' .
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$host . ':' . $this->_config['port']);
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$this->_down_host_list[] = $host;
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continue;
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}
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// If we're supposed to use TLS, do so before we try to bind,
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// as some strict servers only allow binding via secure connections
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if ($this->_config["starttls"] === true) {
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if (self::isError($msg = $this->startTLS())) {
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$current_error = $msg;
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$this->_link = false;
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$this->_down_host_list[] = $host;
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continue;
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}
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}
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// Try to set the configured LDAP version on the connection if LDAP
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// server needs that before binding (eg OpenLDAP).
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// This could be necessary since rfc-1777 states that the protocol version
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// has to be set at the bind request.
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// We use force here which means that the test in the rootDSE is skipped;
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// this is neccessary, because some strict LDAP servers only allow to
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// read the LDAP rootDSE (which tells us the supported protocol versions)
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// with authenticated clients.
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// This may fail in which case we try again after binding.
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// In this case, most probably the bind() or setLDAPVersion()-call
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// below will also fail, providing error messages.
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$version_set = false;
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$ignored_err = $this->setLDAPVersion(0, true);
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if (!self::isError($ignored_err)) {
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$version_set = true;
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}
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// Attempt to bind to the server. If we have credentials configured,
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// we try to use them, otherwise its an anonymous bind.
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// As stated by RFC-1777, the bind request should be the first
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// operation to be performed after the connection is established.
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// This may give an protocol error if the server does not support
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// V2 binds and the above call to setLDAPVersion() failed.
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// In case the above call failed, we try an V2 bind here and set the
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// version afterwards (with checking to the rootDSE).
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$msg = $this->bind();
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if (self::isError($msg)) {
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// The bind failed, discard link and save error msg.
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// Then record the host as down and try next one
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if ($msg->getCode() == 0x02 && !$version_set) {
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// provide a finer grained error message
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// if protocol error arieses because of invalid version
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$msg = new Net_LDAP2_Error($msg->getMessage().
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" (could not set LDAP protocol version to ".
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$this->_config['version'].")",
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$msg->getCode());
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}
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$this->_link = false;
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$current_error = $msg;
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$this->_down_host_list[] = $host;
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continue;
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}
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// Set desired LDAP version if not successfully set before.
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// Here, a check against the rootDSE is performed, so we get a
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// error message if the server does not support the version.
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// The rootDSE entry should tell us which LDAP versions are
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// supported. However, some strict LDAP servers only allow
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// bound suers to read the rootDSE.
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if (!$version_set) {
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if (self::isError($msg = $this->setLDAPVersion())) {
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$current_error = $msg;
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$this->_link = false;
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$this->_down_host_list[] = $host;
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continue;
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}
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}
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// Set LDAP parameters, now we know we have a valid connection.
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if (isset($this->_config['options']) &&
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is_array($this->_config['options']) &&
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count($this->_config['options'])) {
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foreach ($this->_config['options'] as $opt => $val) {
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$err = $this->setOption($opt, $val);
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if (self::isError($err)) {
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$current_error = $err;
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$this->_link = false;
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$this->_down_host_list[] = $host;
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continue 2;
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}
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}
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}
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// At this stage we have connected, bound, and set up options,
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// so we have a known good LDAP server. Time to go home.
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return true;
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}
|
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|
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// All connection attempts have failed, return the last error.
|
|
return $current_error;
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}
|
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|
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/**
|
|
* Reconnect to the ldap-server.
|
|
*
|
|
* In case the connection to the LDAP
|
|
* service has dropped out for some reason, this function will reconnect,
|
|
* and re-bind if a bind has been attempted in the past. It is probably
|
|
* most useful when the server list provided to the new() or connect()
|
|
* function is an array rather than a single host name, because in that
|
|
* case it will be able to connect to a failover or secondary server in
|
|
* case the primary server goes down.
|
|
*
|
|
* This doesn't return anything, it just tries to re-establish
|
|
* the current connection. It will sleep for the current backoff
|
|
* period (seconds) before attempting the connect, and if the
|
|
* connection fails it will double the backoff period, but not
|
|
* try again. If you want to ensure a reconnection during a
|
|
* transient period of server downtime then you need to call this
|
|
* function in a loop.
|
|
*
|
|
* @access protected
|
|
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
|
|
*/
|
|
protected function performReconnect()
|
|
{
|
|
|
|
// Return true if we are already connected.
|
|
if ($this->_link !== false) {
|
|
return true;
|
|
}
|
|
|
|
// Default error message in case all connection attempts
|
|
// fail but no message is set
|
|
$current_error = new PEAR_Error('Unknown connection error');
|
|
|
|
// Sleep for a backoff period in seconds.
|
|
sleep($this->_config['current_backoff']);
|
|
|
|
// Retry all available connections.
|
|
$this->_down_host_list = array();
|
|
$msg = $this->performConnect();
|
|
|
|
// Bail out if that fails.
|
|
if (self::isError($msg)) {
|
|
$this->_config['current_backoff'] =
|
|
$this->_config['current_backoff'] * 2;
|
|
if ($this->_config['current_backoff'] > $this->_config['max_backoff']) {
|
|
$this->_config['current_backoff'] = $this->_config['max_backoff'];
|
|
}
|
|
return $msg;
|
|
}
|
|
|
|
// Now we should be able to safely (re-)bind.
|
|
$msg = $this->bind();
|
|
if (self::isError($msg)) {
|
|
$this->_config['current_backoff'] = $this->_config['current_backoff'] * 2;
|
|
if ($this->_config['current_backoff'] > $this->_config['max_backoff']) {
|
|
$this->_config['current_backoff'] = $this->_config['max_backoff'];
|
|
}
|
|
|
|
// _config['host'] should have had the last connected host stored in it
|
|
// by performConnect(). Since we are unable to bind to that host we can safely
|
|
// assume that it is down or has some other problem.
|
|
$this->_down_host_list[] = $this->_config['host'];
|
|
return $msg;
|
|
}
|
|
|
|
// At this stage we have connected, bound, and set up options,
|
|
// so we have a known good LDAP server. Time to go home.
|
|
$this->_config['current_backoff'] = $this->_config['min_backoff'];
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Starts an encrypted session
|
|
*
|
|
* @access public
|
|
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
|
|
*/
|
|
public function startTLS()
|
|
{
|
|
/* Test to see if the server supports TLS first.
|
|
This is done via testing the extensions offered by the server.
|
|
The OID 1.3.6.1.4.1.1466.20037 tells us, if TLS is supported.
|
|
Note, that not all servers allow to feth either the rootDSE or
|
|
attributes over an unencrypted channel, so we must ignore errors. */
|
|
$rootDSE = $this->rootDse();
|
|
if (self::isError($rootDSE)) {
|
|
/* IGNORE this error, because server may refuse fetching the
|
|
RootDSE over an unencrypted connection. */
|
|
//return $this->raiseError("Unable to fetch rootDSE entry ".
|
|
//"to see if TLS is supoported: ".$rootDSE->getMessage(), $rootDSE->getCode());
|
|
} else {
|
|
/* Fetch suceeded, see, if the server supports TLS. Again, we
|
|
ignore errors, because the server may refuse to return
|
|
attributes over unencryted connections. */
|
|
$supported_extensions = $rootDSE->getValue('supportedExtension');
|
|
if (self::isError($supported_extensions)) {
|
|
/* IGNORE error, because server may refuse attribute
|
|
returning over an unencrypted connection. */
|
|
//return $this->raiseError("Unable to fetch rootDSE attribute 'supportedExtension' ".
|
|
//"to see if TLS is supoported: ".$supported_extensions->getMessage(), $supported_extensions->getCode());
|
|
} else {
|
|
// fetch succeedet, lets see if the server supports it.
|
|
// if not, then drop an error. If supported, then do nothing,
|
|
// because then we try to issue TLS afterwards.
|
|
if (!in_array('1.3.6.1.4.1.1466.20037', $supported_extensions)) {
|
|
return $this->raiseError("Server reports that it does not support TLS.");
|
|
}
|
|
}
|
|
}
|
|
|
|
// Try to establish TLS.
|
|
if (false === @ldap_start_tls($this->_link)) {
|
|
// Starting TLS failed. This may be an error, or because
|
|
// the server does not support it but did not enable us to
|
|
// detect that above.
|
|
return $this->raiseError("TLS could not be started: " .
|
|
@ldap_error($this->_link),
|
|
@ldap_errno($this->_link));
|
|
} else {
|
|
return true; // TLS is started now.
|
|
}
|
|
}
|
|
|
|
/**
|
|
* alias function of startTLS() for perl-ldap interface
|
|
*
|
|
* @return void
|
|
* @see startTLS()
|
|
*/
|
|
public function start_tls()
|
|
{
|
|
$args = func_get_args();
|
|
return call_user_func_array(array( &$this, 'startTLS' ), $args);
|
|
}
|
|
|
|
/**
|
|
* Close LDAP connection.
|
|
*
|
|
* Closes the connection. Use this when the session is over.
|
|
*
|
|
* @return void
|
|
*/
|
|
public function done()
|
|
{
|
|
$this->_Net_LDAP2();
|
|
}
|
|
|
|
/**
|
|
* Alias for {@link done()}
|
|
*
|
|
* @return void
|
|
* @see done()
|
|
*/
|
|
public function disconnect()
|
|
{
|
|
$this->done();
|
|
}
|
|
|
|
/**
|
|
* Destructor
|
|
*
|
|
* @access protected
|
|
*/
|
|
public function _Net_LDAP2()
|
|
{
|
|
@ldap_close($this->_link);
|
|
}
|
|
|
|
/**
|
|
* Add a new entryobject to a directory.
|
|
*
|
|
* Use add to add a new Net_LDAP2_Entry object to the directory.
|
|
* This also links the entry to the connection used for the add,
|
|
* if it was a fresh entry ({@link Net_LDAP2_Entry::createFresh()})
|
|
*
|
|
* @param Net_LDAP2_Entry &$entry Net_LDAP2_Entry
|
|
*
|
|
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
|
|
*/
|
|
public function add(&$entry)
|
|
{
|
|
if (!$entry instanceof Net_LDAP2_Entry) {
|
|
return PEAR::raiseError('Parameter to Net_LDAP2::add() must be a Net_LDAP2_Entry object.');
|
|
}
|
|
|
|
// Continue attempting the add operation in a loop until we
|
|
// get a success, a definitive failure, or the world ends.
|
|
$foo = 0;
|
|
while (true) {
|
|
$link = $this->getLink();
|
|
|
|
if ($link === false) {
|
|
// We do not have a successful connection yet. The call to
|
|
// getLink() would have kept trying if we wanted one. Go
|
|
// home now.
|
|
return PEAR::raiseError("Could not add entry " . $entry->dn() .
|
|
" no valid LDAP connection could be found.");
|
|
}
|
|
|
|
if (@ldap_add($link, $entry->dn(), $entry->getValues())) {
|
|
// entry successfully added, we should update its $ldap reference
|
|
// in case it is not set so far (fresh entry)
|
|
if (!$entry->getLDAP() instanceof Net_LDAP2) {
|
|
$entry->setLDAP($this);
|
|
}
|
|
// store, that the entry is present inside the directory
|
|
$entry->markAsNew(false);
|
|
return true;
|
|
} else {
|
|
// We have a failure. What type? We may be able to reconnect
|
|
// and try again.
|
|
$error_code = @ldap_errno($link);
|
|
$error_name = Net_LDAP2::errorMessage($error_code);
|
|
|
|
if (($error_name === 'LDAP_OPERATIONS_ERROR') &&
|
|
($this->_config['auto_reconnect'])) {
|
|
|
|
// The server has become disconnected before trying the
|
|
// operation. We should try again, possibly with a different
|
|
// server.
|
|
$this->_link = false;
|
|
$this->performReconnect();
|
|
} else {
|
|
// Errors other than the above catched are just passed
|
|
// back to the user so he may react upon them.
|
|
return PEAR::raiseError("Could not add entry " . $entry->dn() . " " .
|
|
$error_name,
|
|
$error_code);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Delete an entry from the directory
|
|
*
|
|
* The object may either be a string representing the dn or a Net_LDAP2_Entry
|
|
* object. When the boolean paramter recursive is set, all subentries of the
|
|
* entry will be deleted as well.
|
|
*
|
|
* @param string|Net_LDAP2_Entry $dn DN-string or Net_LDAP2_Entry
|
|
* @param boolean $recursive Should we delete all children recursive as well?
|
|
*
|
|
* @access public
|
|
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
|
|
*/
|
|
public function delete($dn, $recursive = false)
|
|
{
|
|
if ($dn instanceof Net_LDAP2_Entry) {
|
|
$dn = $dn->dn();
|
|
}
|
|
if (false === is_string($dn)) {
|
|
return PEAR::raiseError("Parameter is not a string nor an entry object!");
|
|
}
|
|
// Recursive delete searches for children and calls delete for them
|
|
if ($recursive) {
|
|
$result = @ldap_list($this->_link, $dn, '(objectClass=*)', array(null), 0, 0);
|
|
if (@ldap_count_entries($this->_link, $result)) {
|
|
$subentry = @ldap_first_entry($this->_link, $result);
|
|
$this->delete(@ldap_get_dn($this->_link, $subentry), true);
|
|
while ($subentry = @ldap_next_entry($this->_link, $subentry)) {
|
|
$this->delete(@ldap_get_dn($this->_link, $subentry), true);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Continue attempting the delete operation in a loop until we
|
|
// get a success, a definitive failure, or the world ends.
|
|
while (true) {
|
|
$link = $this->getLink();
|
|
|
|
if ($link === false) {
|
|
// We do not have a successful connection yet. The call to
|
|
// getLink() would have kept trying if we wanted one. Go
|
|
// home now.
|
|
return PEAR::raiseError("Could not add entry " . $dn .
|
|
" no valid LDAP connection could be found.");
|
|
}
|
|
|
|
if (@ldap_delete($link, $dn)) {
|
|
// entry successfully deleted.
|
|
return true;
|
|
} else {
|
|
// We have a failure. What type?
|
|
// We may be able to reconnect and try again.
|
|
$error_code = @ldap_errno($link);
|
|
$error_name = Net_LDAP2::errorMessage($error_code);
|
|
|
|
if ((Net_LDAP2::errorMessage($error_code) === 'LDAP_OPERATIONS_ERROR') &&
|
|
($this->_config['auto_reconnect'])) {
|
|
// The server has become disconnected before trying the
|
|
// operation. We should try again, possibly with a
|
|
// different server.
|
|
$this->_link = false;
|
|
$this->performReconnect();
|
|
|
|
} elseif ($error_code == 66) {
|
|
// Subentries present, server refused to delete.
|
|
// Deleting subentries is the clients responsibility, but
|
|
// since the user may not know of the subentries, we do not
|
|
// force that here but instead notify the developer so he
|
|
// may take actions himself.
|
|
return PEAR::raiseError("Could not delete entry $dn because of subentries. Use the recursive parameter to delete them.");
|
|
|
|
} else {
|
|
// Errors other than the above catched are just passed
|
|
// back to the user so he may react upon them.
|
|
return PEAR::raiseError("Could not delete entry " . $dn . " " .
|
|
$error_name,
|
|
$error_code);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Modify an ldapentry directly on the server
|
|
*
|
|
* This one takes the DN or a Net_LDAP2_Entry object and an array of actions.
|
|
* This array should be something like this:
|
|
*
|
|
* array('add' => array('attribute1' => array('val1', 'val2'),
|
|
* 'attribute2' => array('val1')),
|
|
* 'delete' => array('attribute1'),
|
|
* 'replace' => array('attribute1' => array('val1')),
|
|
* 'changes' => array('add' => ...,
|
|
* 'replace' => ...,
|
|
* 'delete' => array('attribute1', 'attribute2' => array('val1')))
|
|
*
|
|
* The changes array is there so the order of operations can be influenced
|
|
* (the operations are done in order of appearance).
|
|
* The order of execution is as following:
|
|
* 1. adds from 'add' array
|
|
* 2. deletes from 'delete' array
|
|
* 3. replaces from 'replace' array
|
|
* 4. changes (add, replace, delete) in order of appearance
|
|
* All subarrays (add, replace, delete, changes) may be given at the same time.
|
|
*
|
|
* The function calls the corresponding functions of an Net_LDAP2_Entry
|
|
* object. A detailed description of array structures can be found there.
|
|
*
|
|
* Unlike the modification methods provided by the Net_LDAP2_Entry object,
|
|
* this method will instantly carry out an update() after each operation,
|
|
* thus modifying "directly" on the server.
|
|
*
|
|
* @param string|Net_LDAP2_Entry $entry DN-string or Net_LDAP2_Entry
|
|
* @param array $parms Array of changes
|
|
*
|
|
* @access public
|
|
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
|
|
*/
|
|
public function modify($entry, $parms = array())
|
|
{
|
|
if (is_string($entry)) {
|
|
$entry = $this->getEntry($entry);
|
|
if (self::isError($entry)) {
|
|
return $entry;
|
|
}
|
|
}
|
|
if (!$entry instanceof Net_LDAP2_Entry) {
|
|
return PEAR::raiseError("Parameter is not a string nor an entry object!");
|
|
}
|
|
|
|
// Perform changes mentioned separately
|
|
foreach (array('add', 'delete', 'replace') as $action) {
|
|
if (isset($parms[$action])) {
|
|
$msg = $entry->$action($parms[$action]);
|
|
if (self::isError($msg)) {
|
|
return $msg;
|
|
}
|
|
$entry->setLDAP($this);
|
|
|
|
// Because the @ldap functions are called inside Net_LDAP2_Entry::update(),
|
|
// we have to trap the error codes issued from that if we want to support
|
|
// reconnection.
|
|
while (true) {
|
|
$msg = $entry->update();
|
|
|
|
if (self::isError($msg)) {
|
|
// We have a failure. What type? We may be able to reconnect
|
|
// and try again.
|
|
$error_code = $msg->getCode();
|
|
$error_name = Net_LDAP2::errorMessage($error_code);
|
|
|
|
if ((Net_LDAP2::errorMessage($error_code) === 'LDAP_OPERATIONS_ERROR') &&
|
|
($this->_config['auto_reconnect'])) {
|
|
|
|
// The server has become disconnected before trying the
|
|
// operation. We should try again, possibly with a different
|
|
// server.
|
|
$this->_link = false;
|
|
$this->performReconnect();
|
|
|
|
} else {
|
|
|
|
// Errors other than the above catched are just passed
|
|
// back to the user so he may react upon them.
|
|
return PEAR::raiseError("Could not modify entry: ".$msg->getMessage());
|
|
}
|
|
} else {
|
|
// modification succeedet, evaluate next change
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// perform combined changes in 'changes' array
|
|
if (isset($parms['changes']) && is_array($parms['changes'])) {
|
|
foreach ($parms['changes'] as $action => $value) {
|
|
|
|
// Because the @ldap functions are called inside Net_LDAP2_Entry::update,
|
|
// we have to trap the error codes issued from that if we want to support
|
|
// reconnection.
|
|
while (true) {
|
|
$msg = $this->modify($entry, array($action => $value));
|
|
|
|
if (self::isError($msg)) {
|
|
// We have a failure. What type? We may be able to reconnect
|
|
// and try again.
|
|
$error_code = $msg->getCode();
|
|
$error_name = Net_LDAP2::errorMessage($error_code);
|
|
|
|
if ((Net_LDAP2::errorMessage($error_code) === 'LDAP_OPERATIONS_ERROR') &&
|
|
($this->_config['auto_reconnect'])) {
|
|
|
|
// The server has become disconnected before trying the
|
|
// operation. We should try again, possibly with a different
|
|
// server.
|
|
$this->_link = false;
|
|
$this->performReconnect();
|
|
|
|
} else {
|
|
// Errors other than the above catched are just passed
|
|
// back to the user so he may react upon them.
|
|
return $msg;
|
|
}
|
|
} else {
|
|
// modification succeedet, evaluate next change
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Run a ldap search query
|
|
*
|
|
* Search is used to query the ldap-database.
|
|
* $base and $filter may be ommitted. The one from config will
|
|
* then be used. $base is either a DN-string or an Net_LDAP2_Entry
|
|
* object in which case its DN willb e used.
|
|
*
|
|
* Params may contain:
|
|
*
|
|
* scope: The scope which will be used for searching
|
|
* base - Just one entry
|
|
* sub - The whole tree
|
|
* one - Immediately below $base
|
|
* sizelimit: Limit the number of entries returned (default: 0 = unlimited),
|
|
* timelimit: Limit the time spent for searching (default: 0 = unlimited),
|
|
* attrsonly: If true, the search will only return the attribute names,
|
|
* attributes: Array of attribute names, which the entry should contain.
|
|
* It is good practice to limit this to just the ones you need.
|
|
* [NOT IMPLEMENTED]
|
|
* deref: By default aliases are dereferenced to locate the base object for the search, but not when
|
|
* searching subordinates of the base object. This may be changed by specifying one of the
|
|
* following values:
|
|
*
|
|
* never - Do not dereference aliases in searching or in locating the base object of the search.
|
|
* search - Dereference aliases in subordinates of the base object in searching, but not in
|
|
* locating the base object of the search.
|
|
* find
|
|
* always
|
|
*
|
|
* Please note, that you cannot override server side limitations to sizelimit
|
|
* and timelimit: You can always only lower a given limit.
|
|
*
|
|
* @param string|Net_LDAP2_Entry $base LDAP searchbase
|
|
* @param string|Net_LDAP2_Filter $filter LDAP search filter or a Net_LDAP2_Filter object
|
|
* @param array $params Array of options
|
|
*
|
|
* @access public
|
|
* @return Net_LDAP2_Search|Net_LDAP2_Error Net_LDAP2_Search object or Net_LDAP2_Error object
|
|
* @todo implement search controls (sorting etc)
|
|
*/
|
|
public function search($base = null, $filter = null, $params = array())
|
|
{
|
|
if (is_null($base)) {
|
|
$base = $this->_config['basedn'];
|
|
}
|
|
if ($base instanceof Net_LDAP2_Entry) {
|
|
$base = $base->dn(); // fetch DN of entry, making searchbase relative to the entry
|
|
}
|
|
if (is_null($filter)) {
|
|
$filter = $this->_config['filter'];
|
|
}
|
|
if ($filter instanceof Net_LDAP2_Filter) {
|
|
$filter = $filter->asString(); // convert Net_LDAP2_Filter to string representation
|
|
}
|
|
if (PEAR::isError($filter)) {
|
|
return $filter;
|
|
}
|
|
if (PEAR::isError($base)) {
|
|
return $base;
|
|
}
|
|
|
|
/* setting searchparameters */
|
|
(isset($params['sizelimit'])) ? $sizelimit = $params['sizelimit'] : $sizelimit = 0;
|
|
(isset($params['timelimit'])) ? $timelimit = $params['timelimit'] : $timelimit = 0;
|
|
(isset($params['attrsonly'])) ? $attrsonly = $params['attrsonly'] : $attrsonly = 0;
|
|
(isset($params['attributes'])) ? $attributes = $params['attributes'] : $attributes = array();
|
|
|
|
// Ensure $attributes to be an array in case only one
|
|
// attribute name was given as string
|
|
if (!is_array($attributes)) {
|
|
$attributes = array($attributes);
|
|
}
|
|
|
|
// reorganize the $attributes array index keys
|
|
// sometimes there are problems with not consecutive indexes
|
|
$attributes = array_values($attributes);
|
|
|
|
// scoping makes searches faster!
|
|
$scope = (isset($params['scope']) ? $params['scope'] : $this->_config['scope']);
|
|
|
|
switch ($scope) {
|
|
case 'one':
|
|
$search_function = 'ldap_list';
|
|
break;
|
|
case 'base':
|
|
$search_function = 'ldap_read';
|
|
break;
|
|
default:
|
|
$search_function = 'ldap_search';
|
|
}
|
|
|
|
// Continue attempting the search operation until we get a success
|
|
// or a definitive failure.
|
|
while (true) {
|
|
$link = $this->getLink();
|
|
$search = @call_user_func($search_function,
|
|
$link,
|
|
$base,
|
|
$filter,
|
|
$attributes,
|
|
$attrsonly,
|
|
$sizelimit,
|
|
$timelimit);
|
|
|
|
if ($err = @ldap_errno($link)) {
|
|
if ($err == 32) {
|
|
// Errorcode 32 = no such object, i.e. a nullresult.
|
|
return $obj = new Net_LDAP2_Search ($search, $this, $attributes);
|
|
} elseif ($err == 4) {
|
|
// Errorcode 4 = sizelimit exeeded.
|
|
return $obj = new Net_LDAP2_Search ($search, $this, $attributes);
|
|
} elseif ($err == 87) {
|
|
// bad search filter
|
|
return $this->raiseError(Net_LDAP2::errorMessage($err) . "($filter)", $err);
|
|
} elseif (($err == 1) && ($this->_config['auto_reconnect'])) {
|
|
// Errorcode 1 = LDAP_OPERATIONS_ERROR but we can try a reconnect.
|
|
$this->_link = false;
|
|
$this->performReconnect();
|
|
} else {
|
|
$msg = "\nParameters:\nBase: $base\nFilter: $filter\nScope: $scope";
|
|
return $this->raiseError(Net_LDAP2::errorMessage($err) . $msg, $err);
|
|
}
|
|
} else {
|
|
return $obj = new Net_LDAP2_Search($search, $this, $attributes);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set an LDAP option
|
|
*
|
|
* @param string $option Option to set
|
|
* @param mixed $value Value to set Option to
|
|
*
|
|
* @access public
|
|
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
|
|
*/
|
|
public function setOption($option, $value)
|
|
{
|
|
if ($this->_link) {
|
|
if (defined($option)) {
|
|
if (@ldap_set_option($this->_link, constant($option), $value)) {
|
|
return true;
|
|
} else {
|
|
$err = @ldap_errno($this->_link);
|
|
if ($err) {
|
|
$msg = @ldap_err2str($err);
|
|
} else {
|
|
$err = NET_LDAP2_ERROR;
|
|
$msg = Net_LDAP2::errorMessage($err);
|
|
}
|
|
return $this->raiseError($msg, $err);
|
|
}
|
|
} else {
|
|
return $this->raiseError("Unkown Option requested");
|
|
}
|
|
} else {
|
|
return $this->raiseError("Could not set LDAP option: No LDAP connection");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get an LDAP option value
|
|
*
|
|
* @param string $option Option to get
|
|
*
|
|
* @access public
|
|
* @return Net_LDAP2_Error|string Net_LDAP2_Error or option value
|
|
*/
|
|
public function getOption($option)
|
|
{
|
|
if ($this->_link) {
|
|
if (defined($option)) {
|
|
if (@ldap_get_option($this->_link, constant($option), $value)) {
|
|
return $value;
|
|
} else {
|
|
$err = @ldap_errno($this->_link);
|
|
if ($err) {
|
|
$msg = @ldap_err2str($err);
|
|
} else {
|
|
$err = NET_LDAP2_ERROR;
|
|
$msg = Net_LDAP2::errorMessage($err);
|
|
}
|
|
return $this->raiseError($msg, $err);
|
|
}
|
|
} else {
|
|
$this->raiseError("Unkown Option requested");
|
|
}
|
|
} else {
|
|
$this->raiseError("No LDAP connection");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the LDAP_PROTOCOL_VERSION that is used on the connection.
|
|
*
|
|
* A lot of ldap functionality is defined by what protocol version the ldap server speaks.
|
|
* This might be 2 or 3.
|
|
*
|
|
* @return int
|
|
*/
|
|
public function getLDAPVersion()
|
|
{
|
|
if ($this->_link) {
|
|
$version = $this->getOption("LDAP_OPT_PROTOCOL_VERSION");
|
|
} else {
|
|
$version = $this->_config['version'];
|
|
}
|
|
return $version;
|
|
}
|
|
|
|
/**
|
|
* Set the LDAP_PROTOCOL_VERSION that is used on the connection.
|
|
*
|
|
* @param int $version LDAP-version that should be used
|
|
* @param boolean $force If set to true, the check against the rootDSE will be skipped
|
|
*
|
|
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
|
|
* @todo Checking via the rootDSE takes much time - why? fetching and instanciation is quick!
|
|
*/
|
|
public function setLDAPVersion($version = 0, $force = false)
|
|
{
|
|
if (!$version) {
|
|
$version = $this->_config['version'];
|
|
}
|
|
|
|
//
|
|
// Check to see if the server supports this version first.
|
|
//
|
|
// Todo: Why is this so horribly slow?
|
|
// $this->rootDse() is very fast, as well as Net_LDAP2_RootDSE::fetch()
|
|
// seems like a problem at copiyng the object inside PHP??
|
|
// Additionally, this is not always reproducable...
|
|
//
|
|
if (!$force) {
|
|
$rootDSE = $this->rootDse();
|
|
if ($rootDSE instanceof Net_LDAP2_Error) {
|
|
return $rootDSE;
|
|
} else {
|
|
$supported_versions = $rootDSE->getValue('supportedLDAPVersion');
|
|
if (is_string($supported_versions)) {
|
|
$supported_versions = array($supported_versions);
|
|
}
|
|
$check_ok = in_array($version, $supported_versions);
|
|
}
|
|
}
|
|
|
|
if ($force || $check_ok) {
|
|
return $this->setOption("LDAP_OPT_PROTOCOL_VERSION", $version);
|
|
} else {
|
|
return $this->raiseError("LDAP Server does not support protocol version " . $version);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Tells if a DN does exist in the directory
|
|
*
|
|
* @param string|Net_LDAP2_Entry $dn The DN of the object to test
|
|
*
|
|
* @return boolean|Net_LDAP2_Error
|
|
*/
|
|
public function dnExists($dn)
|
|
{
|
|
if (PEAR::isError($dn)) {
|
|
return $dn;
|
|
}
|
|
if ($dn instanceof Net_LDAP2_Entry) {
|
|
$dn = $dn->dn();
|
|
}
|
|
if (false === is_string($dn)) {
|
|
return PEAR::raiseError('Parameter $dn is not a string nor an entry object!');
|
|
}
|
|
|
|
// search LDAP for that DN by performing a baselevel search for any
|
|
// object. We can only find the DN in question this way, or nothing.
|
|
$s_opts = array(
|
|
'scope' => 'base',
|
|
'sizelimit' => 1,
|
|
'attributes' => '1.1' // select no attrs
|
|
);
|
|
$search = $this->search($dn, '(objectClass=*)', $s_opts);
|
|
|
|
if (self::isError($search)) {
|
|
return $search;
|
|
}
|
|
|
|
// retun wehter the DN exists; that is, we found an entry
|
|
return ($search->count() == 0)? false : true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get a specific entry based on the DN
|
|
*
|
|
* @param string $dn DN of the entry that should be fetched
|
|
* @param array $attr Array of Attributes to select. If ommitted, all attributes are fetched.
|
|
*
|
|
* @return Net_LDAP2_Entry|Net_LDAP2_Error Reference to a Net_LDAP2_Entry object or Net_LDAP2_Error object
|
|
* @todo Maybe check against the shema should be done to be sure the attribute type exists
|
|
*/
|
|
public function &getEntry($dn, $attr = array())
|
|
{
|
|
if (!is_array($attr)) {
|
|
$attr = array($attr);
|
|
}
|
|
$result = $this->search($dn, '(objectClass=*)',
|
|
array('scope' => 'base', 'attributes' => $attr));
|
|
if (self::isError($result)) {
|
|
return $result;
|
|
} elseif ($result->count() == 0) {
|
|
return PEAR::raiseError('Could not fetch entry '.$dn.': no entry found');
|
|
}
|
|
$entry = $result->shiftEntry();
|
|
if (false == $entry) {
|
|
return PEAR::raiseError('Could not fetch entry (error retrieving entry from search result)');
|
|
}
|
|
return $entry;
|
|
}
|
|
|
|
/**
|
|
* Rename or move an entry
|
|
*
|
|
* This method will instantly carry out an update() after the move,
|
|
* so the entry is moved instantly.
|
|
* You can pass an optional Net_LDAP2 object. In this case, a cross directory
|
|
* move will be performed which deletes the entry in the source (THIS) directory
|
|
* and adds it in the directory $target_ldap.
|
|
* A cross directory move will switch the Entrys internal LDAP reference so
|
|
* updates to the entry will go to the new directory.
|
|
*
|
|
* Note that if you want to do a cross directory move, you need to
|
|
* pass an Net_LDAP2_Entry object, otherwise the attributes will be empty.
|
|
*
|
|
* @param string|Net_LDAP2_Entry $entry Entry DN or Entry object
|
|
* @param string $newdn New location
|
|
* @param Net_LDAP2 $target_ldap (optional) Target directory for cross server move; should be passed via reference
|
|
*
|
|
* @return Net_LDAP2_Error|true
|
|
*/
|
|
public function move($entry, $newdn, $target_ldap = null)
|
|
{
|
|
if (is_string($entry)) {
|
|
$entry_o = $this->getEntry($entry);
|
|
} else {
|
|
$entry_o =& $entry;
|
|
}
|
|
if (!$entry_o instanceof Net_LDAP2_Entry) {
|
|
return PEAR::raiseError('Parameter $entry is expected to be a Net_LDAP2_Entry object! (If DN was passed, conversion failed)');
|
|
}
|
|
if (null !== $target_ldap && !$target_ldap instanceof Net_LDAP2) {
|
|
return PEAR::raiseError('Parameter $target_ldap is expected to be a Net_LDAP2 object!');
|
|
}
|
|
|
|
if ($target_ldap && $target_ldap !== $this) {
|
|
// cross directory move
|
|
if (is_string($entry)) {
|
|
return PEAR::raiseError('Unable to perform cross directory move: operation requires a Net_LDAP2_Entry object');
|
|
}
|
|
if ($target_ldap->dnExists($newdn)) {
|
|
return PEAR::raiseError('Unable to perform cross directory move: entry does exist in target directory');
|
|
}
|
|
$entry_o->dn($newdn);
|
|
$res = $target_ldap->add($entry_o);
|
|
if (self::isError($res)) {
|
|
return PEAR::raiseError('Unable to perform cross directory move: '.$res->getMessage().' in target directory');
|
|
}
|
|
$res = $this->delete($entry_o->currentDN());
|
|
if (self::isError($res)) {
|
|
$res2 = $target_ldap->delete($entry_o); // undo add
|
|
if (self::isError($res2)) {
|
|
$add_error_string = 'Additionally, the deletion (undo add) of $entry in target directory failed.';
|
|
}
|
|
return PEAR::raiseError('Unable to perform cross directory move: '.$res->getMessage().' in source directory. '.$add_error_string);
|
|
}
|
|
$entry_o->setLDAP($target_ldap);
|
|
return true;
|
|
} else {
|
|
// local move
|
|
$entry_o->dn($newdn);
|
|
$entry_o->setLDAP($this);
|
|
return $entry_o->update();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Copy an entry to a new location
|
|
*
|
|
* The entry will be immediately copied.
|
|
* Please note that only attributes you have
|
|
* selected will be copied.
|
|
*
|
|
* @param Net_LDAP2_Entry &$entry Entry object
|
|
* @param string $newdn New FQF-DN of the entry
|
|
*
|
|
* @return Net_LDAP2_Error|Net_LDAP2_Entry Error Message or reference to the copied entry
|
|
*/
|
|
public function ©(&$entry, $newdn)
|
|
{
|
|
if (!$entry instanceof Net_LDAP2_Entry) {
|
|
return PEAR::raiseError('Parameter $entry is expected to be a Net_LDAP2_Entry object!');
|
|
}
|
|
|
|
$newentry = Net_LDAP2_Entry::createFresh($newdn, $entry->getValues());
|
|
$result = $this->add($newentry);
|
|
|
|
if ($result instanceof Net_LDAP2_Error) {
|
|
return $result;
|
|
} else {
|
|
return $newentry;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the string for an ldap errorcode.
|
|
*
|
|
* Made to be able to make better errorhandling
|
|
* Function based on DB::errorMessage()
|
|
* Tip: The best description of the errorcodes is found here:
|
|
* http://www.directory-info.com/LDAP2/LDAPErrorCodes.html
|
|
*
|
|
* @param int $errorcode Error code
|
|
*
|
|
* @return string The errorstring for the error.
|
|
*/
|
|
public static function errorMessage($errorcode)
|
|
{
|
|
$errorMessages = array(
|
|
0x00 => "LDAP_SUCCESS",
|
|
0x01 => "LDAP_OPERATIONS_ERROR",
|
|
0x02 => "LDAP_PROTOCOL_ERROR",
|
|
0x03 => "LDAP_TIMELIMIT_EXCEEDED",
|
|
0x04 => "LDAP_SIZELIMIT_EXCEEDED",
|
|
0x05 => "LDAP_COMPARE_FALSE",
|
|
0x06 => "LDAP_COMPARE_TRUE",
|
|
0x07 => "LDAP_AUTH_METHOD_NOT_SUPPORTED",
|
|
0x08 => "LDAP_STRONG_AUTH_REQUIRED",
|
|
0x09 => "LDAP_PARTIAL_RESULTS",
|
|
0x0a => "LDAP_REFERRAL",
|
|
0x0b => "LDAP_ADMINLIMIT_EXCEEDED",
|
|
0x0c => "LDAP_UNAVAILABLE_CRITICAL_EXTENSION",
|
|
0x0d => "LDAP_CONFIDENTIALITY_REQUIRED",
|
|
0x0e => "LDAP_SASL_BIND_INPROGRESS",
|
|
0x10 => "LDAP_NO_SUCH_ATTRIBUTE",
|
|
0x11 => "LDAP_UNDEFINED_TYPE",
|
|
0x12 => "LDAP_INAPPROPRIATE_MATCHING",
|
|
0x13 => "LDAP_CONSTRAINT_VIOLATION",
|
|
0x14 => "LDAP_TYPE_OR_VALUE_EXISTS",
|
|
0x15 => "LDAP_INVALID_SYNTAX",
|
|
0x20 => "LDAP_NO_SUCH_OBJECT",
|
|
0x21 => "LDAP_ALIAS_PROBLEM",
|
|
0x22 => "LDAP_INVALID_DN_SYNTAX",
|
|
0x23 => "LDAP_IS_LEAF",
|
|
0x24 => "LDAP_ALIAS_DEREF_PROBLEM",
|
|
0x30 => "LDAP_INAPPROPRIATE_AUTH",
|
|
0x31 => "LDAP_INVALID_CREDENTIALS",
|
|
0x32 => "LDAP_INSUFFICIENT_ACCESS",
|
|
0x33 => "LDAP_BUSY",
|
|
0x34 => "LDAP_UNAVAILABLE",
|
|
0x35 => "LDAP_UNWILLING_TO_PERFORM",
|
|
0x36 => "LDAP_LOOP_DETECT",
|
|
0x3C => "LDAP_SORT_CONTROL_MISSING",
|
|
0x3D => "LDAP_INDEX_RANGE_ERROR",
|
|
0x40 => "LDAP_NAMING_VIOLATION",
|
|
0x41 => "LDAP_OBJECT_CLASS_VIOLATION",
|
|
0x42 => "LDAP_NOT_ALLOWED_ON_NONLEAF",
|
|
0x43 => "LDAP_NOT_ALLOWED_ON_RDN",
|
|
0x44 => "LDAP_ALREADY_EXISTS",
|
|
0x45 => "LDAP_NO_OBJECT_CLASS_MODS",
|
|
0x46 => "LDAP_RESULTS_TOO_LARGE",
|
|
0x47 => "LDAP_AFFECTS_MULTIPLE_DSAS",
|
|
0x50 => "LDAP_OTHER",
|
|
0x51 => "LDAP_SERVER_DOWN",
|
|
0x52 => "LDAP_LOCAL_ERROR",
|
|
0x53 => "LDAP_ENCODING_ERROR",
|
|
0x54 => "LDAP_DECODING_ERROR",
|
|
0x55 => "LDAP_TIMEOUT",
|
|
0x56 => "LDAP_AUTH_UNKNOWN",
|
|
0x57 => "LDAP_FILTER_ERROR",
|
|
0x58 => "LDAP_USER_CANCELLED",
|
|
0x59 => "LDAP_PARAM_ERROR",
|
|
0x5a => "LDAP_NO_MEMORY",
|
|
0x5b => "LDAP_CONNECT_ERROR",
|
|
0x5c => "LDAP_NOT_SUPPORTED",
|
|
0x5d => "LDAP_CONTROL_NOT_FOUND",
|
|
0x5e => "LDAP_NO_RESULTS_RETURNED",
|
|
0x5f => "LDAP_MORE_RESULTS_TO_RETURN",
|
|
0x60 => "LDAP_CLIENT_LOOP",
|
|
0x61 => "LDAP_REFERRAL_LIMIT_EXCEEDED",
|
|
1000 => "Unknown Net_LDAP2 Error"
|
|
);
|
|
|
|
return isset($errorMessages[$errorcode]) ?
|
|
$errorMessages[$errorcode] :
|
|
$errorMessages[NET_LDAP2_ERROR] . ' (' . $errorcode . ')';
|
|
}
|
|
|
|
/**
|
|
* Gets a rootDSE object
|
|
*
|
|
* This either fetches a fresh rootDSE object or returns it from
|
|
* the internal cache for performance reasons, if possible.
|
|
*
|
|
* @param array $attrs Array of attributes to search for
|
|
*
|
|
* @access public
|
|
* @return Net_LDAP2_Error|Net_LDAP2_RootDSE Net_LDAP2_Error or Net_LDAP2_RootDSE object
|
|
*/
|
|
public function &rootDse($attrs = null)
|
|
{
|
|
if ($attrs !== null && !is_array($attrs)) {
|
|
return PEAR::raiseError('Parameter $attr is expected to be an array!');
|
|
}
|
|
|
|
$attrs_signature = serialize($attrs);
|
|
|
|
// see if we need to fetch a fresh object, or if we already
|
|
// requested this object with the same attributes
|
|
if (true || !array_key_exists($attrs_signature, $this->_rootDSE_cache)) {
|
|
$rootdse =& Net_LDAP2_RootDSE::fetch($this, $attrs);
|
|
if ($rootdse instanceof Net_LDAP2_Error) {
|
|
return $rootdse;
|
|
}
|
|
|
|
// search was ok, store rootDSE in cache
|
|
$this->_rootDSE_cache[$attrs_signature] = $rootdse;
|
|
}
|
|
return $this->_rootDSE_cache[$attrs_signature];
|
|
}
|
|
|
|
/**
|
|
* Alias function of rootDse() for perl-ldap interface
|
|
*
|
|
* @access public
|
|
* @see rootDse()
|
|
* @return Net_LDAP2_Error|Net_LDAP2_RootDSE
|
|
*/
|
|
public function &root_dse()
|
|
{
|
|
$args = func_get_args();
|
|
return call_user_func_array(array(&$this, 'rootDse'), $args);
|
|
}
|
|
|
|
/**
|
|
* Get a schema object
|
|
*
|
|
* @param string $dn (optional) Subschema entry dn
|
|
*
|
|
* @access public
|
|
* @return Net_LDAP2_Schema|Net_LDAP2_Error Net_LDAP2_Schema or Net_LDAP2_Error object
|
|
*/
|
|
public function &schema($dn = null)
|
|
{
|
|
// Schema caching by Knut-Olav Hoven
|
|
// If a schema caching object is registered, we use that to fetch
|
|
// a schema object.
|
|
// See registerSchemaCache() for more info on this.
|
|
if ($this->_schema === null) {
|
|
if ($this->_schema_cache) {
|
|
$cached_schema = $this->_schema_cache->loadSchema();
|
|
if ($cached_schema instanceof Net_LDAP2_Error) {
|
|
return $cached_schema; // route error to client
|
|
} else {
|
|
if ($cached_schema instanceof Net_LDAP2_Schema) {
|
|
$this->_schema = $cached_schema;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Fetch schema, if not tried before and no cached version available.
|
|
// If we are already fetching the schema, we will skip fetching.
|
|
if ($this->_schema === null) {
|
|
// store a temporary error message so subsequent calls to schema() can
|
|
// detect, that we are fetching the schema already.
|
|
// Otherwise we will get an infinite loop at Net_LDAP2_Schema::fetch()
|
|
$this->_schema = new Net_LDAP2_Error('Schema not initialized');
|
|
$this->_schema = Net_LDAP2_Schema::fetch($this, $dn);
|
|
|
|
// If schema caching is active, advise the cache to store the schema
|
|
if ($this->_schema_cache) {
|
|
$caching_result = $this->_schema_cache->storeSchema($this->_schema);
|
|
if ($caching_result instanceof Net_LDAP2_Error) {
|
|
return $caching_result; // route error to client
|
|
}
|
|
}
|
|
}
|
|
return $this->_schema;
|
|
}
|
|
|
|
/**
|
|
* Enable/disable persistent schema caching
|
|
*
|
|
* Sometimes it might be useful to allow your scripts to cache
|
|
* the schema information on disk, so the schema is not fetched
|
|
* every time the script runs which could make your scripts run
|
|
* faster.
|
|
*
|
|
* This method allows you to register a custom object that
|
|
* implements your schema cache. Please see the SchemaCache interface
|
|
* (SchemaCache.interface.php) for informations on how to implement this.
|
|
* To unregister the cache, pass null as $cache parameter.
|
|
*
|
|
* For ease of use, Net_LDAP2 provides a simple file based cache
|
|
* which is used in the example below. You may use this, for example,
|
|
* to store the schema in a linux tmpfs which results in the schema
|
|
* beeing cached inside the RAM which allows nearly instant access.
|
|
* <code>
|
|
* // Create the simple file cache object that comes along with Net_LDAP2
|
|
* $mySchemaCache_cfg = array(
|
|
* 'path' => '/tmp/Net_LDAP2_Schema.cache',
|
|
* 'max_age' => 86400 // max age is 24 hours (in seconds)
|
|
* );
|
|
* $mySchemaCache = new Net_LDAP2_SimpleFileSchemaCache($mySchemaCache_cfg);
|
|
* $ldap = new Net_LDAP2::connect(...);
|
|
* $ldap->registerSchemaCache($mySchemaCache); // enable caching
|
|
* // now each call to $ldap->schema() will get the schema from disk!
|
|
* </code>
|
|
*
|
|
* @param Net_LDAP2_SchemaCache|null $cache Object implementing the Net_LDAP2_SchemaCache interface
|
|
*
|
|
* @return true|Net_LDAP2_Error
|
|
*/
|
|
public function registerSchemaCache($cache) {
|
|
if (is_null($cache)
|
|
|| (is_object($cache) && in_array('Net_LDAP2_SchemaCache', class_implements($cache))) ) {
|
|
$this->_schema_cache = $cache;
|
|
return true;
|
|
} else {
|
|
return new Net_LDAP2_Error('Custom schema caching object is either no '.
|
|
'valid object or does not implement the Net_LDAP2_SchemaCache interface!');
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Checks if phps ldap-extension is loaded
|
|
*
|
|
* If it is not loaded, it tries to load it manually using PHPs dl().
|
|
* It knows both windows-dll and *nix-so.
|
|
*
|
|
* @static
|
|
* @return Net_LDAP2_Error|true
|
|
*/
|
|
public static function checkLDAPExtension()
|
|
{
|
|
if (!extension_loaded('ldap') && !@dl('ldap.' . PHP_SHLIB_SUFFIX)) {
|
|
return new Net_LDAP2_Error("It seems that you do not have the ldap-extension installed. Please install it before using the Net_LDAP2 package.");
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Encodes given attributes from ISO-8859-1 to UTF-8 if needed by schema
|
|
*
|
|
* This function takes attributes in an array and then checks against the schema if they need
|
|
* UTF8 encoding. If that is so, they will be encoded. An encoded array will be returned and
|
|
* can be used for adding or modifying.
|
|
*
|
|
* $attributes is expected to be an array with keys describing
|
|
* the attribute names and the values as the value of this attribute:
|
|
* <code>$attributes = array('cn' => 'foo', 'attr2' => array('mv1', 'mv2'));</code>
|
|
*
|
|
* @param array $attributes Array of attributes
|
|
*
|
|
* @access public
|
|
* @return array|Net_LDAP2_Error Array of UTF8 encoded attributes or Error
|
|
*/
|
|
public function utf8Encode($attributes)
|
|
{
|
|
return $this->utf8($attributes, 'utf8_encode');
|
|
}
|
|
|
|
/**
|
|
* Decodes the given attribute values from UTF-8 to ISO-8859-1 if needed by schema
|
|
*
|
|
* $attributes is expected to be an array with keys describing
|
|
* the attribute names and the values as the value of this attribute:
|
|
* <code>$attributes = array('cn' => 'foo', 'attr2' => array('mv1', 'mv2'));</code>
|
|
*
|
|
* @param array $attributes Array of attributes
|
|
*
|
|
* @access public
|
|
* @see utf8Encode()
|
|
* @return array|Net_LDAP2_Error Array with decoded attribute values or Error
|
|
*/
|
|
public function utf8Decode($attributes)
|
|
{
|
|
return $this->utf8($attributes, 'utf8_decode');
|
|
}
|
|
|
|
/**
|
|
* Encodes or decodes UTF-8/ISO-8859-1 attribute values if needed by schema
|
|
*
|
|
* @param array $attributes Array of attributes
|
|
* @param array $function Function to apply to attribute values
|
|
*
|
|
* @access protected
|
|
* @return array|Net_LDAP2_Error Array of attributes with function applied to values or Error
|
|
*/
|
|
protected function utf8($attributes, $function)
|
|
{
|
|
if (!is_array($attributes) || array_key_exists(0, $attributes)) {
|
|
return PEAR::raiseError('Parameter $attributes is expected to be an associative array');
|
|
}
|
|
|
|
if (!$this->_schema) {
|
|
$this->_schema = $this->schema();
|
|
}
|
|
|
|
if (!$this->_link || self::isError($this->_schema) || !function_exists($function)) {
|
|
return $attributes;
|
|
}
|
|
|
|
if (is_array($attributes) && count($attributes) > 0) {
|
|
|
|
foreach ($attributes as $k => $v) {
|
|
|
|
if (!isset($this->_schemaAttrs[$k])) {
|
|
|
|
$attr = $this->_schema->get('attribute', $k);
|
|
if (self::isError($attr)) {
|
|
continue;
|
|
}
|
|
|
|
// Encoding is needed if this is a DIR_STR. We assume also
|
|
// needed encoding in case the schema contains no syntax
|
|
// information (he does not need to, see rfc2252, 4.2)
|
|
if (!array_key_exists('syntax', $attr) || false !== strpos($attr['syntax'], '1.3.6.1.4.1.1466.115.121.1.15')) {
|
|
$encode = true;
|
|
} else {
|
|
$encode = false;
|
|
}
|
|
$this->_schemaAttrs[$k] = $encode;
|
|
|
|
} else {
|
|
$encode = $this->_schemaAttrs[$k];
|
|
}
|
|
|
|
if ($encode) {
|
|
if (is_array($v)) {
|
|
foreach ($v as $ak => $av) {
|
|
$v[$ak] = call_user_func($function, $av);
|
|
}
|
|
} else {
|
|
$v = call_user_func($function, $v);
|
|
}
|
|
}
|
|
$attributes[$k] = $v;
|
|
}
|
|
}
|
|
return $attributes;
|
|
}
|
|
|
|
/**
|
|
* Get the LDAP link resource. It will loop attempting to
|
|
* re-establish the connection if the connection attempt fails and
|
|
* auto_reconnect has been turned on (see the _config array documentation).
|
|
*
|
|
* @access public
|
|
* @return resource LDAP link
|
|
*/
|
|
public function &getLink()
|
|
{
|
|
if ($this->_config['auto_reconnect']) {
|
|
while (true) {
|
|
//
|
|
// Return the link handle if we are already connected. Otherwise
|
|
// try to reconnect.
|
|
//
|
|
if ($this->_link !== false) {
|
|
return $this->_link;
|
|
} else {
|
|
$this->performReconnect();
|
|
}
|
|
}
|
|
}
|
|
return $this->_link;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Net_LDAP2_Error implements a class for reporting portable LDAP error messages.
|
|
*
|
|
* @category Net
|
|
* @package Net_LDAP2
|
|
* @author Tarjej Huse <tarjei@bergfald.no>
|
|
* @license http://www.gnu.org/copyleft/lesser.html LGPL
|
|
* @link http://pear.php.net/package/Net_LDAP22/
|
|
*/
|
|
class Net_LDAP2_Error extends PEAR_Error
|
|
{
|
|
/**
|
|
* Net_LDAP2_Error constructor.
|
|
*
|
|
* @param string $message String with error message.
|
|
* @param integer $code Net_LDAP2 error code
|
|
* @param integer $mode what "error mode" to operate in
|
|
* @param mixed $level what error level to use for $mode & PEAR_ERROR_TRIGGER
|
|
* @param mixed $debuginfo additional debug info, such as the last query
|
|
*
|
|
* @access public
|
|
* @see PEAR_Error
|
|
*/
|
|
public function __construct($message = 'Net_LDAP2_Error', $code = NET_LDAP2_ERROR, $mode = PEAR_ERROR_RETURN,
|
|
$level = E_USER_NOTICE, $debuginfo = null)
|
|
{
|
|
if (is_int($code)) {
|
|
$this->PEAR_Error($message . ': ' . Net_LDAP2::errorMessage($code), $code, $mode, $level, $debuginfo);
|
|
} else {
|
|
$this->PEAR_Error("$message: $code", NET_LDAP2_ERROR, $mode, $level, $debuginfo);
|
|
}
|
|
}
|
|
}
|
|
|
|
?>
|