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1062 lines
34 KiB
PHP
1062 lines
34 KiB
PHP
<?php
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/*
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+-----------------------------------------------------------------------+
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| Roundcube/rcube_ldap_generic.php |
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| |
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| This file is part of the Roundcube Webmail client |
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| Copyright (C) 2006-2013, The Roundcube Dev Team |
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| Copyright (C) 2012-2013, Kolab Systems AG |
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| |
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| Licensed under the GNU General Public License version 3 or |
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| any later version with exceptions for skins & plugins. |
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| See the README file for a full license statement. |
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| |
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| PURPOSE: |
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| Provide basic functionality for accessing LDAP directories |
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| |
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+-----------------------------------------------------------------------+
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| Author: Thomas Bruederli <roundcube@gmail.com> |
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| Aleksander Machniak <machniak@kolabsys.com> |
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+-----------------------------------------------------------------------+
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*/
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/*
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LDAP connection properties
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--------------------------
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$prop = array(
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'host' => '<ldap-server-address>',
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// or
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'hosts' => array('directory.verisign.com'),
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'port' => 389,
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'use_tls' => true|false,
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'ldap_version' => 3, // using LDAPv3
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'auth_method' => '', // SASL authentication method (for proxy auth), e.g. DIGEST-MD5
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'attributes' => array('dn'), // List of attributes to read from the server
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'vlv' => false, // Enable Virtual List View to more efficiently fetch paginated data (if server supports it)
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'config_root_dn' => 'cn=config', // Root DN to read config (e.g. vlv indexes) from
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'numsub_filter' => '(objectClass=organizationalUnit)', // with VLV, we also use numSubOrdinates to query the total number of records. Set this filter to get all numSubOrdinates attributes for counting
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'sizelimit' => '0', // Enables you to limit the count of entries fetched. Setting this to 0 means no limit.
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'timelimit' => '0', // Sets the number of seconds how long is spend on the search. Setting this to 0 means no limit.
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'network_timeout' => 10, // The timeout (in seconds) for connect + bind arrempts. This is only supported in PHP >= 5.3.0 with OpenLDAP 2.x
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'referrals' => true|false, // Sets the LDAP_OPT_REFERRALS option. Mostly used in multi-domain Active Directory setups
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);
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*/
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/**
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* Model class to access an LDAP directories
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*
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* @package Framework
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* @subpackage LDAP
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*/
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class rcube_ldap_generic
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{
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const UPDATE_MOD_ADD = 1;
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const UPDATE_MOD_DELETE = 2;
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const UPDATE_MOD_REPLACE = 4;
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const UPDATE_MOD_FULL = 7;
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public $conn;
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public $vlv_active = false;
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/** private properties */
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protected $cache = null;
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protected $config = array();
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protected $attributes = array('dn');
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protected $entries = null;
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protected $result = null;
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protected $debug = false;
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protected $list_page = 1;
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protected $page_size = 10;
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protected $vlv_config = null;
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/**
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* Object constructor
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*
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* @param array $p LDAP connection properties
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*/
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function __construct($p)
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{
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$this->config = $p;
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if (is_array($p['attributes']))
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$this->attributes = $p['attributes'];
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if (!is_array($p['hosts']) && !empty($p['host']))
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$this->config['hosts'] = array($p['host']);
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}
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/**
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* Activate/deactivate debug mode
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*
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* @param boolean $dbg True if LDAP commands should be logged
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*/
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public function set_debug($dbg = true)
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{
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$this->debug = $dbg;
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}
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/**
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* Set connection options
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*
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* @param mixed $opt Option name as string or hash array with multiple options
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* @param mixed $val Option value
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*/
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public function set_config($opt, $val = null)
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{
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if (is_array($opt))
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$this->config = array_merge($this->config, $opt);
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else
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$this->config[$opt] = $value;
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}
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/**
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* Enable caching by passing an instance of rcube_cache to be used by this object
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*
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* @param object rcube_cache Instance or False to disable caching
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*/
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public function set_cache($cache_engine)
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{
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$this->cache = $cache_engine;
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}
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/**
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* Set properties for VLV-based paging
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*
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* @param number $page Page number to list (starting at 1)
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* @param number $size Number of entries to display on one page
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*/
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public function set_vlv_page($page, $size = 10)
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{
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$this->list_page = $page;
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$this->page_size = $size;
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}
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/**
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* Establish a connection to the LDAP server
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*/
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public function connect($host = null)
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{
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if (!function_exists('ldap_connect')) {
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rcube::raise_error(array('code' => 100, 'type' => 'ldap',
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'file' => __FILE__, 'line' => __LINE__,
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'message' => "No ldap support in this installation of PHP"),
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true);
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return false;
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}
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if (is_resource($this->conn) && $this->config['host'] == $host)
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return true;
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if (empty($this->config['ldap_version']))
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$this->config['ldap_version'] = 3;
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// iterate over hosts if none specified
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if (!$host) {
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if (!is_array($this->config['hosts']))
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$this->config['hosts'] = array($this->config['hosts']);
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foreach ($this->config['hosts'] as $host) {
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if (!empty($host) && $this->connect($host)) {
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return true;
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}
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}
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return false;
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}
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// open connection to the given $host
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$host = rcube_utils::idn_to_ascii(rcube_utils::parse_host($host));
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$hostname = $host . ($this->config['port'] ? ':'.$this->config['port'] : '');
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$this->_debug("C: Connect to $hostname [{$this->config['name']}]");
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if ($lc = @ldap_connect($host, $this->config['port'])) {
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if ($this->config['use_tls'] === true) {
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if (!ldap_start_tls($lc)) {
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return false;
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}
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}
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$this->_debug("S: OK");
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ldap_set_option($lc, LDAP_OPT_PROTOCOL_VERSION, $this->config['ldap_version']);
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$this->config['host'] = $host;
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$this->conn = $lc;
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if (!empty($this->config['network_timeout']))
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ldap_set_option($lc, LDAP_OPT_NETWORK_TIMEOUT, $this->config['network_timeout']);
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if (isset($this->config['referrals']))
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ldap_set_option($lc, LDAP_OPT_REFERRALS, $this->config['referrals']);
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if (isset($this->config['dereference']))
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ldap_set_option($lc, LDAP_OPT_DEREF, $this->config['dereference']);
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}
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else {
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$this->_debug("S: NOT OK");
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}
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if (!is_resource($this->conn)) {
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rcube::raise_error(array('code' => 100, 'type' => 'ldap',
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'file' => __FILE__, 'line' => __LINE__,
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'message' => "Could not connect to any LDAP server, last tried $hostname"),
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true);
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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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* Bind connection with (SASL-) user and password
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*
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* @param string $authc Authentication user
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* @param string $pass Bind password
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* @param string $authz Autorization user
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*
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* @return boolean True on success, False on error
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*/
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public function sasl_bind($authc, $pass, $authz=null)
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{
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if (!$this->conn) {
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return false;
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}
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if (!function_exists('ldap_sasl_bind')) {
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rcube::raise_error(array('code' => 100, 'type' => 'ldap',
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'file' => __FILE__, 'line' => __LINE__,
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'message' => "Unable to bind: ldap_sasl_bind() not exists"),
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true);
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return false;
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}
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if (!empty($authz)) {
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$authz = 'u:' . $authz;
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}
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if (!empty($this->config['auth_method'])) {
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$method = $this->config['auth_method'];
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}
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else {
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$method = 'DIGEST-MD5';
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}
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$this->_debug("C: SASL Bind [mech: $method, authc: $authc, authz: $authz, pass: **** [" . strlen($pass) . "]");
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if (ldap_sasl_bind($this->conn, NULL, $pass, $method, NULL, $authc, $authz)) {
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$this->_debug("S: OK");
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return true;
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}
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$this->_debug("S: ".ldap_error($this->conn));
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rcube::raise_error(array(
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'code' => ldap_errno($this->conn), 'type' => 'ldap',
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'file' => __FILE__, 'line' => __LINE__,
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'message' => "SASL Bind failed for authcid=$authc ".ldap_error($this->conn)),
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true);
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return false;
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}
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/**
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* Bind connection with DN and password
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*
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* @param string $dn Bind DN
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* @param string $pass Bind password
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*
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* @return boolean True on success, False on error
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*/
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public function bind($dn, $pass)
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{
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if (!$this->conn) {
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return false;
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}
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$this->_debug("C: Bind $dn, pass: **** [" . strlen($pass) . "]");
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if (@ldap_bind($this->conn, $dn, $pass)) {
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$this->_debug("S: OK");
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return true;
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}
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$this->_debug("S: ".ldap_error($this->conn));
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rcube::raise_error(array(
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'code' => ldap_errno($this->conn), 'type' => 'ldap',
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'file' => __FILE__, 'line' => __LINE__,
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'message' => "Bind failed for dn=$dn: ".ldap_error($this->conn)),
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true);
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return false;
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}
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/**
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* Close connection to LDAP server
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*/
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public function close()
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{
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if ($this->conn) {
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$this->_debug("C: Close");
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ldap_unbind($this->conn);
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$this->conn = null;
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}
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}
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/**
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* Return the last result set
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*
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* @return object rcube_ldap_result Result object
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*/
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function get_result()
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{
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return $this->result;
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}
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/**
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* Get a specific LDAP entry, identified by its DN
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*
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* @param string $dn Record identifier
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* @return array Hash array
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*/
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function get_entry($dn)
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{
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$rec = null;
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if ($this->conn && $dn) {
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$this->_debug("C: Read $dn [(objectclass=*)]");
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if ($ldap_result = @ldap_read($this->conn, $dn, '(objectclass=*)', $this->attributes)) {
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$this->_debug("S: OK");
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if ($entry = ldap_first_entry($this->conn, $ldap_result)) {
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$rec = ldap_get_attributes($this->conn, $entry);
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}
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}
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else {
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$this->_debug("S: ".ldap_error($this->conn));
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}
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if (!empty($rec)) {
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$rec['dn'] = $dn; // Add in the dn for the entry.
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}
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}
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return $rec;
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}
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/**
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* Execute the LDAP search based on the stored credentials
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*
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* @param string $base_dn The base DN to query
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* @param string $filter The LDAP filter for search
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* @param string $scope The LDAP scope (list|sub|base)
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* @param array $attrs List of entry attributes to read
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* @param array $prop Hash array with query configuration properties:
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* - sort: array of sort attributes (has to be in sync with the VLV index)
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* - search: search string used for VLV controls
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* @param boolean $count_only Set to true if only entry count is requested
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*
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* @return mixed rcube_ldap_result object or number of entries (if count_only=true) or false on error
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*/
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public function search($base_dn, $filter = '', $scope = 'sub', $attrs = array('dn'), $prop = array(), $count_only = false)
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{
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if (!$this->conn) {
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return false;
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}
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if (empty($filter)) {
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$filter = '(objectclass=*)';
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}
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$this->_debug("C: Search $base_dn for $filter");
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$function = self::scope2func($scope, $ns_function);
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// find available VLV index for this query
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if (!$count_only && ($vlv_sort = $this->_find_vlv($base_dn, $filter, $scope, $prop['sort']))) {
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// when using VLV, we get the total count by...
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// ...either reading numSubOrdinates attribute
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if (($sub_filter = $this->config['numsub_filter']) &&
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($result_count = @$ns_function($this->conn, $base_dn, $sub_filter, array('numSubOrdinates'), 0, 0, 0))
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) {
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$counts = ldap_get_entries($this->conn, $result_count);
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for ($vlv_count = $j = 0; $j < $counts['count']; $j++)
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$vlv_count += $counts[$j]['numsubordinates'][0];
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$this->_debug("D: total numsubordinates = " . $vlv_count);
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}
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// ...or by fetching all records dn and count them
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else if (!function_exists('ldap_parse_virtuallist_control')) {
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$vlv_count = $this->search($base_dn, $filter, $scope, array('dn'), $prop, true);
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}
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$this->vlv_active = $this->_vlv_set_controls($vlv_sort, $this->list_page, $this->page_size, $prop['search']);
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}
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else {
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$this->vlv_active = false;
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}
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// only fetch dn for count (should keep the payload low)
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if ($ldap_result = @$function($this->conn, $base_dn, $filter,
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$attrs, 0, (int)$this->config['sizelimit'], (int)$this->config['timelimit'])
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) {
|
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// when running on a patched PHP we can use the extended functions
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// to retrieve the total count from the LDAP search result
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if ($this->vlv_active && function_exists('ldap_parse_virtuallist_control')) {
|
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if (ldap_parse_result($this->conn, $ldap_result, $errcode, $matcheddn, $errmsg, $referrals, $serverctrls)) {
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ldap_parse_virtuallist_control($this->conn, $serverctrls, $last_offset, $vlv_count, $vresult);
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$this->_debug("S: VLV result: last_offset=$last_offset; content_count=$vlv_count");
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}
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else {
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$this->_debug("S: ".($errmsg ? $errmsg : ldap_error($this->conn)));
|
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}
|
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}
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else if ($this->debug) {
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$this->_debug("S: ".ldap_count_entries($this->conn, $ldap_result)." record(s) found");
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}
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$this->result = new rcube_ldap_result($this->conn, $ldap_result, $base_dn, $filter, $vlv_count);
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return $count_only ? $this->result->count() : $this->result;
|
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}
|
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else {
|
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$this->_debug("S: ".ldap_error($this->conn));
|
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}
|
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return false;
|
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}
|
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|
|
/**
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|
* Modify an LDAP entry on the server
|
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*
|
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* @param string $dn Entry DN
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* @param array $params Hash array of entry attributes
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* @param int $mode Update mode (UPDATE_MOD_ADD | UPDATE_MOD_DELETE | UPDATE_MOD_REPLACE)
|
|
*/
|
|
public function modify($dn, $parms, $mode = 255)
|
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{
|
|
// TODO: implement this
|
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return false;
|
|
}
|
|
|
|
/**
|
|
* Wrapper for ldap_add()
|
|
*
|
|
* @see ldap_add()
|
|
*/
|
|
public function add($dn, $entry)
|
|
{
|
|
$this->_debug("C: Add $dn: ".print_r($entry, true));
|
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|
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$res = ldap_add($this->conn, $dn, $entry);
|
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if ($res === false) {
|
|
$this->_debug("S: ".ldap_error($this->conn));
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return false;
|
|
}
|
|
|
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$this->_debug("S: OK");
|
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return true;
|
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}
|
|
|
|
/**
|
|
* Wrapper for ldap_delete()
|
|
*
|
|
* @see ldap_delete()
|
|
*/
|
|
public function delete($dn)
|
|
{
|
|
$this->_debug("C: Delete $dn");
|
|
|
|
$res = ldap_delete($this->conn, $dn);
|
|
if ($res === false) {
|
|
$this->_debug("S: ".ldap_error($this->conn));
|
|
return false;
|
|
}
|
|
|
|
$this->_debug("S: OK");
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Wrapper for ldap_mod_replace()
|
|
*
|
|
* @see ldap_mod_replace()
|
|
*/
|
|
public function mod_replace($dn, $entry)
|
|
{
|
|
$this->_debug("C: Replace $dn: ".print_r($entry, true));
|
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|
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if (!ldap_mod_replace($this->conn, $dn, $entry)) {
|
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$this->_debug("S: ".ldap_error($this->conn));
|
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return false;
|
|
}
|
|
|
|
$this->_debug("S: OK");
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Wrapper for ldap_mod_add()
|
|
*
|
|
* @see ldap_mod_add()
|
|
*/
|
|
public function mod_add($dn, $entry)
|
|
{
|
|
$this->_debug("C: Add $dn: ".print_r($entry, true));
|
|
|
|
if (!ldap_mod_add($this->conn, $dn, $entry)) {
|
|
$this->_debug("S: ".ldap_error($this->conn));
|
|
return false;
|
|
}
|
|
|
|
$this->_debug("S: OK");
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Wrapper for ldap_mod_del()
|
|
*
|
|
* @see ldap_mod_del()
|
|
*/
|
|
public function mod_del($dn, $entry)
|
|
{
|
|
$this->_debug("C: Delete $dn: ".print_r($entry, true));
|
|
|
|
if (!ldap_mod_del($this->conn, $dn, $entry)) {
|
|
$this->_debug("S: ".ldap_error($this->conn));
|
|
return false;
|
|
}
|
|
|
|
$this->_debug("S: OK");
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Wrapper for ldap_rename()
|
|
*
|
|
* @see ldap_rename()
|
|
*/
|
|
public function rename($dn, $newrdn, $newparent = null, $deleteoldrdn = true)
|
|
{
|
|
$this->_debug("C: Rename $dn to $newrdn");
|
|
|
|
if (!ldap_rename($this->conn, $dn, $newrdn, $newparent, $deleteoldrdn)) {
|
|
$this->_debug("S: ".ldap_error($this->conn));
|
|
return false;
|
|
}
|
|
|
|
$this->_debug("S: OK");
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Wrapper for ldap_list() + ldap_get_entries()
|
|
*
|
|
* @see ldap_list()
|
|
* @see ldap_get_entries()
|
|
*/
|
|
public function list_entries($dn, $filter, $attributes = array('dn'))
|
|
{
|
|
$list = array();
|
|
$this->_debug("C: List $dn [{$filter}]");
|
|
|
|
if ($result = ldap_list($this->conn, $dn, $filter, $attributes)) {
|
|
$list = ldap_get_entries($this->conn, $result);
|
|
|
|
if ($list === false) {
|
|
$this->_debug("S: ".ldap_error($this->conn));
|
|
return array();
|
|
}
|
|
|
|
$count = $list['count'];
|
|
unset($list['count']);
|
|
|
|
$this->_debug("S: $count record(s)");
|
|
}
|
|
else {
|
|
$this->_debug("S: ".ldap_error($this->conn));
|
|
}
|
|
|
|
return $list;
|
|
}
|
|
|
|
/**
|
|
* Wrapper for ldap_read() + ldap_get_entries()
|
|
*
|
|
* @see ldap_read()
|
|
* @see ldap_get_entries()
|
|
*/
|
|
public function read_entries($dn, $filter, $attributes = null)
|
|
{
|
|
$this->_debug("C: Read $dn [{$filter}]");
|
|
|
|
if ($this->conn && $dn) {
|
|
if (!$attributes)
|
|
$attributes = $this->attributes;
|
|
|
|
$result = @ldap_read($this->conn, $dn, $filter, $attributes, 0, (int)$this->config['sizelimit'], (int)$this->config['timelimit']);
|
|
if ($result === false) {
|
|
$this->_debug("S: ".ldap_error($this->conn));
|
|
return false;
|
|
}
|
|
|
|
$this->_debug("S: OK");
|
|
return ldap_get_entries($this->conn, $result);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Choose the right PHP function according to scope property
|
|
*
|
|
* @param string $scope The LDAP scope (sub|base|list)
|
|
* @param string $ns_function Function to be used for numSubOrdinates queries
|
|
* @return string PHP function to be used to query directory
|
|
*/
|
|
public static function scope2func($scope, &$ns_function = null)
|
|
{
|
|
switch ($scope) {
|
|
case 'sub':
|
|
$function = $ns_function = 'ldap_search';
|
|
break;
|
|
case 'base':
|
|
$function = $ns_function = 'ldap_read';
|
|
break;
|
|
default:
|
|
$function = 'ldap_list';
|
|
$ns_function = 'ldap_read';
|
|
break;
|
|
}
|
|
|
|
return $function;
|
|
}
|
|
|
|
/**
|
|
* Convert the given scope integer value to a string representation
|
|
*/
|
|
public static function scopeint2str($scope)
|
|
{
|
|
switch ($scope) {
|
|
case 2: return 'sub';
|
|
case 1: return 'one';
|
|
case 0: return 'base';
|
|
default: $this->_debug("Scope $scope is not a valid scope integer");
|
|
}
|
|
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* Escapes the given value according to RFC 2254 so that it can be safely used in LDAP filters.
|
|
*
|
|
* @param string $val Value to quote
|
|
* @return string The escaped value
|
|
*/
|
|
public static function escape_value($val)
|
|
{
|
|
return strtr($str, array('*'=>'\2a', '('=>'\28', ')'=>'\29',
|
|
'\\'=>'\5c', '/'=>'\2f'));
|
|
}
|
|
|
|
/**
|
|
* Escapes a DN value according to RFC 2253
|
|
*
|
|
* @param string $dn DN value o quote
|
|
* @return string The escaped value
|
|
*/
|
|
public static function escape_dn($dn)
|
|
{
|
|
return strtr($str, array(','=>'\2c', '='=>'\3d', '+'=>'\2b',
|
|
'<'=>'\3c', '>'=>'\3e', ';'=>'\3b', '\\'=>'\5c',
|
|
'"'=>'\22', '#'=>'\23'));
|
|
}
|
|
|
|
/**
|
|
* Normalize a LDAP result by converting entry attributes arrays into single values
|
|
*
|
|
* @param array $result LDAP result set fetched with ldap_get_entries()
|
|
* @return array Hash array with normalized entries, indexed by their DNs
|
|
*/
|
|
public static function normalize_result($result)
|
|
{
|
|
if (!is_array($result)) {
|
|
return array();
|
|
}
|
|
|
|
$entries = array();
|
|
for ($i = 0; $i < $result['count']; $i++) {
|
|
$key = $result[$i]['dn'] ? $result[$i]['dn'] : $i;
|
|
$entries[$key] = self::normalize_entry($result[$i]);
|
|
}
|
|
|
|
return $entries;
|
|
}
|
|
|
|
/**
|
|
* Turn an LDAP entry into a regular PHP array with attributes as keys.
|
|
*
|
|
* @param array $entry Attributes array as retrieved from ldap_get_attributes() or ldap_get_entries()
|
|
*
|
|
* @return array Hash array with attributes as keys
|
|
*/
|
|
public static function normalize_entry($entry)
|
|
{
|
|
if (!isset($entry['count'])) {
|
|
return $entry;
|
|
}
|
|
|
|
$rec = array();
|
|
|
|
for ($i=0; $i < $entry['count']; $i++) {
|
|
$attr = $entry[$i];
|
|
if ($entry[$attr]['count'] == 1) {
|
|
switch ($attr) {
|
|
case 'objectclass':
|
|
$rec[$attr] = array(strtolower($entry[$attr][0]));
|
|
break;
|
|
default:
|
|
$rec[$attr] = $entry[$attr][0];
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
for ($j=0; $j < $entry[$attr]['count']; $j++) {
|
|
$rec[$attr][$j] = $entry[$attr][$j];
|
|
}
|
|
}
|
|
}
|
|
|
|
return $rec;
|
|
}
|
|
|
|
/**
|
|
* Set server controls for Virtual List View (paginated listing)
|
|
*/
|
|
private function _vlv_set_controls($sort, $list_page, $page_size, $search = null)
|
|
{
|
|
$sort_ctrl = array('oid' => "1.2.840.113556.1.4.473", 'value' => self::_sort_ber_encode((array)$sort));
|
|
$vlv_ctrl = array('oid' => "2.16.840.1.113730.3.4.9", 'value' => self::_vlv_ber_encode(($offset = ($list_page-1) * $page_size + 1), $page_size, $search), 'iscritical' => true);
|
|
|
|
$this->_debug("C: Set controls sort=" . join(' ', unpack('H'.(strlen($sort_ctrl['value'])*2), $sort_ctrl['value'])) . " ($sort[0]);"
|
|
. " vlv=" . join(' ', (unpack('H'.(strlen($vlv_ctrl['value'])*2), $vlv_ctrl['value']))) . " ($offset/$page_size; $search)");
|
|
|
|
if (!ldap_set_option($this->conn, LDAP_OPT_SERVER_CONTROLS, array($sort_ctrl, $vlv_ctrl))) {
|
|
$this->_debug("S: ".ldap_error($this->conn));
|
|
$this->set_error(self::ERROR_SEARCH, 'vlvnotsupported');
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Returns unified attribute name (resolving aliases)
|
|
*/
|
|
private static function _attr_name($namev)
|
|
{
|
|
// list of known attribute aliases
|
|
static $aliases = array(
|
|
'gn' => 'givenname',
|
|
'rfc822mailbox' => 'email',
|
|
'userid' => 'uid',
|
|
'emailaddress' => 'email',
|
|
'pkcs9email' => 'email',
|
|
);
|
|
|
|
list($name, $limit) = explode(':', $namev, 2);
|
|
$suffix = $limit ? ':'.$limit : '';
|
|
|
|
return (isset($aliases[$name]) ? $aliases[$name] : $name) . $suffix;
|
|
}
|
|
|
|
/**
|
|
* Quotes attribute value string
|
|
*
|
|
* @param string $str Attribute value
|
|
* @param bool $dn True if the attribute is a DN
|
|
*
|
|
* @return string Quoted string
|
|
*/
|
|
public static function quote_string($str, $dn=false)
|
|
{
|
|
// take firt entry if array given
|
|
if (is_array($str))
|
|
$str = reset($str);
|
|
|
|
if ($dn)
|
|
$replace = array(','=>'\2c', '='=>'\3d', '+'=>'\2b', '<'=>'\3c',
|
|
'>'=>'\3e', ';'=>'\3b', '\\'=>'\5c', '"'=>'\22', '#'=>'\23');
|
|
else
|
|
$replace = array('*'=>'\2a', '('=>'\28', ')'=>'\29', '\\'=>'\5c',
|
|
'/'=>'\2f');
|
|
|
|
return strtr($str, $replace);
|
|
}
|
|
|
|
/**
|
|
* Prints debug info to the log
|
|
*/
|
|
private function _debug($str)
|
|
{
|
|
if ($this->debug && class_exists('rcube')) {
|
|
rcube::write_log('ldap', $str);
|
|
}
|
|
}
|
|
|
|
|
|
/***************** Virtual List View (VLV) related utility functions **************** */
|
|
|
|
/**
|
|
* Return the search string value to be used in VLV controls
|
|
*/
|
|
private function _vlv_search($sort, $search)
|
|
{
|
|
foreach ($search as $attr => $value) {
|
|
if (!in_array(strtolower($attr), $sort)) {
|
|
$this->_debug("d: Cannot use VLV search using attribute not indexed: $attr (not in " . var_export($sort, true) . ")");
|
|
return null;
|
|
} else {
|
|
return $value;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Find a VLV index matching the given query attributes
|
|
*
|
|
* @return string Sort attribute or False if no match
|
|
*/
|
|
private function _find_vlv($base_dn, $filter, $scope, $sort_attrs = null)
|
|
{
|
|
if (!$this->config['vlv'] || $scope == 'base') {
|
|
return false;
|
|
}
|
|
|
|
// get vlv config
|
|
$vlv_config = $this->_read_vlv_config();
|
|
|
|
if ($vlv = $vlv_config[$base_dn]) {
|
|
$this->_debug("D: Found a VLV for $base_dn");
|
|
|
|
if ($vlv['filter'] == strtolower($filter) || stripos($filter, '(&'.$vlv['filter'].'(') === 0) {
|
|
$this->_debug("D: Filter matches");
|
|
if ($vlv['scope'] == $scope) {
|
|
// Not passing any sort attributes means you don't care
|
|
if (empty($sort_attrs) || in_array($sort_attrs, $vlv['sort'])) {
|
|
return $vlv['sort'][0];
|
|
}
|
|
}
|
|
else {
|
|
$this->_debug("D: Scope does not match");
|
|
}
|
|
}
|
|
else {
|
|
$this->_debug("D: Filter does not match");
|
|
}
|
|
}
|
|
else {
|
|
$this->_debug("D: No VLV for $base_dn");
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Return VLV indexes and searches including necessary configuration
|
|
* details.
|
|
*/
|
|
private function _read_vlv_config()
|
|
{
|
|
if (empty($this->config['vlv']) || empty($this->config['config_root_dn'])) {
|
|
return array();
|
|
}
|
|
// return hard-coded VLV config
|
|
else if (is_array($this->config['vlv'])) {
|
|
return $this->config['vlv'];
|
|
}
|
|
|
|
// return cached result
|
|
if (is_array($this->vlv_config)) {
|
|
return $this->vlv_config;
|
|
}
|
|
|
|
if ($this->cache && ($cached_config = $this->cache->get('vlvconfig'))) {
|
|
$this->vlv_config = $cached_config;
|
|
return $this->vlv_config;
|
|
}
|
|
|
|
$this->vlv_config = array();
|
|
$config_root_dn = $this->config['config_root_dn'];
|
|
|
|
$ldap_result = ldap_search($this->conn, $config_root_dn, '(objectclass=vlvsearch)', array('*'), 0, 0, 0);
|
|
$vlv_searches = new rcube_ldap_result($this->conn, $ldap_result, $config_root_dn, '(objectclass=vlvsearch)');
|
|
|
|
if ($vlv_searches->count() < 1) {
|
|
$this->_debug("D: Empty result from search for '(objectclass=vlvsearch)' on '$config_root_dn'");
|
|
return array();
|
|
}
|
|
|
|
foreach ($vlv_searches->entries(true) as $vlv_search_dn => $vlv_search_attrs) {
|
|
// Multiple indexes may exist
|
|
$ldap_result = ldap_search($this->conn, $vlv_search_dn, '(objectclass=vlvindex)', array('*'), 0, 0, 0);
|
|
$vlv_indexes = new rcube_ldap_result($this->conn, $ldap_result, $vlv_search_dn, '(objectclass=vlvindex)');
|
|
|
|
// Reset this one for each VLV search.
|
|
$_vlv_sort = array();
|
|
foreach ($vlv_indexes->entries(true) as $vlv_index_dn => $vlv_index_attrs) {
|
|
$_vlv_sort[] = explode(' ', $vlv_index_attrs['vlvsort']);
|
|
}
|
|
|
|
$this->vlv_config[$vlv_search_attrs['vlvbase']] = array(
|
|
'scope' => self::scopeint2str($vlv_search_attrs['vlvscope']),
|
|
'filter' => strtolower($vlv_search_attrs['vlvfilter']),
|
|
'sort' => $_vlv_sort,
|
|
);
|
|
}
|
|
|
|
// cache this
|
|
if ($this->cache)
|
|
$this->cache->set('vlvconfig', $this->vlv_config);
|
|
|
|
$this->_debug("D: Refreshed VLV config: " . var_export($this->vlv_config, true));
|
|
|
|
return $this->vlv_config;
|
|
}
|
|
|
|
/**
|
|
* Generate BER encoded string for Virtual List View option
|
|
*
|
|
* @param integer List offset (first record)
|
|
* @param integer Records per page
|
|
*
|
|
* @return string BER encoded option value
|
|
*/
|
|
private static function _vlv_ber_encode($offset, $rpp, $search = '')
|
|
{
|
|
/*
|
|
this string is ber-encoded, php will prefix this value with:
|
|
04 (octet string) and 10 (length of 16 bytes)
|
|
the code behind this string is broken down as follows:
|
|
30 = ber sequence with a length of 0e (14) bytes following
|
|
02 = type integer (in two's complement form) with 2 bytes following (beforeCount): 01 00 (ie 0)
|
|
02 = type integer (in two's complement form) with 2 bytes following (afterCount): 01 18 (ie 25-1=24)
|
|
a0 = type context-specific/constructed with a length of 06 (6) bytes following
|
|
02 = type integer with 2 bytes following (offset): 01 01 (ie 1)
|
|
02 = type integer with 2 bytes following (contentCount): 01 00
|
|
|
|
with a search string present:
|
|
81 = type context-specific/constructed with a length of 04 (4) bytes following (the length will change here)
|
|
81 indicates a user string is present where as a a0 indicates just a offset search
|
|
81 = type context-specific/constructed with a length of 06 (6) bytes following
|
|
|
|
The following info was taken from the ISO/IEC 8825-1:2003 x.690 standard re: the
|
|
encoding of integer values (note: these values are in
|
|
two-complement form so since offset will never be negative bit 8 of the
|
|
leftmost octet should never by set to 1):
|
|
8.3.2: If the contents octets of an integer value encoding consist
|
|
of more than one octet, then the bits of the first octet (rightmost)
|
|
and bit 8 of the second (to the left of first octet) octet:
|
|
a) shall not all be ones; and
|
|
b) shall not all be zero
|
|
*/
|
|
|
|
if ($search) {
|
|
$search = preg_replace('/[^-[:alpha:] ,.()0-9]+/', '', $search);
|
|
$ber_val = self::_string2hex($search);
|
|
$str = self::_ber_addseq($ber_val, '81');
|
|
}
|
|
else {
|
|
// construct the string from right to left
|
|
$str = "020100"; # contentCount
|
|
|
|
$ber_val = self::_ber_encode_int($offset); // returns encoded integer value in hex format
|
|
|
|
// calculate octet length of $ber_val
|
|
$str = self::_ber_addseq($ber_val, '02') . $str;
|
|
|
|
// now compute length over $str
|
|
$str = self::_ber_addseq($str, 'a0');
|
|
}
|
|
|
|
// now tack on records per page
|
|
$str = "020100" . self::_ber_addseq(self::_ber_encode_int($rpp-1), '02') . $str;
|
|
|
|
// now tack on sequence identifier and length
|
|
$str = self::_ber_addseq($str, '30');
|
|
|
|
return pack('H'.strlen($str), $str);
|
|
}
|
|
|
|
/**
|
|
* create ber encoding for sort control
|
|
*
|
|
* @param array List of cols to sort by
|
|
* @return string BER encoded option value
|
|
*/
|
|
private static function _sort_ber_encode($sortcols)
|
|
{
|
|
$str = '';
|
|
foreach (array_reverse((array)$sortcols) as $col) {
|
|
$ber_val = self::_string2hex($col);
|
|
|
|
// 30 = ber sequence with a length of octet value
|
|
// 04 = octet string with a length of the ascii value
|
|
$oct = self::_ber_addseq($ber_val, '04');
|
|
$str = self::_ber_addseq($oct, '30') . $str;
|
|
}
|
|
|
|
// now tack on sequence identifier and length
|
|
$str = self::_ber_addseq($str, '30');
|
|
|
|
return pack('H'.strlen($str), $str);
|
|
}
|
|
|
|
/**
|
|
* Add BER sequence with correct length and the given identifier
|
|
*/
|
|
private static function _ber_addseq($str, $identifier)
|
|
{
|
|
$len = dechex(strlen($str)/2);
|
|
if (strlen($len) % 2 != 0)
|
|
$len = '0'.$len;
|
|
|
|
return $identifier . $len . $str;
|
|
}
|
|
|
|
/**
|
|
* Returns BER encoded integer value in hex format
|
|
*/
|
|
private static function _ber_encode_int($offset)
|
|
{
|
|
$val = dechex($offset);
|
|
$prefix = '';
|
|
|
|
// check if bit 8 of high byte is 1
|
|
if (preg_match('/^[89abcdef]/', $val))
|
|
$prefix = '00';
|
|
|
|
if (strlen($val)%2 != 0)
|
|
$prefix .= '0';
|
|
|
|
return $prefix . $val;
|
|
}
|
|
|
|
/**
|
|
* Returns ascii string encoded in hex
|
|
*/
|
|
private static function _string2hex($str)
|
|
{
|
|
$hex = '';
|
|
for ($i=0; $i < strlen($str); $i++) {
|
|
$hex .= dechex(ord($str[$i]));
|
|
}
|
|
return $hex;
|
|
}
|
|
|
|
}
|