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source: subversion/trunk/roundcubemail/program/include/rcube_ldap.php @ 5208

Last change on this file since 5208 was 5208, checked in by alec, 21 months ago
Fix required_fields checking per discussion in #1488073
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 47.1 KB

Line
1	<?php
2	/*
3	+-----------------------------------------------------------------------+
4	\| program/include/rcube_ldap.php \|
5	\| \|
6	\| This file is part of the Roundcube Webmail client \|
7	\| Copyright (C) 2006-2011, The Roundcube Dev Team \|
8	\| Licensed under the GNU GPL \|
9	\| \|
10	\| PURPOSE: \|
11	\| Interface to an LDAP address directory \|
12	\| \|
13	+-----------------------------------------------------------------------+
14	\| Author: Thomas Bruederli <roundcube@gmail.com> \|
15	\| Andreas Dick <andudi (at) gmx (dot) ch> \|
16	+-----------------------------------------------------------------------+
17
18	$Id$
19
20	*/
21
22
23	/**
24	* Model class to access an LDAP address directory
25	*
26	* @package Addressbook
27	*/
28	class rcube_ldap extends rcube_addressbook
29	{
30	/** public properties */
31	public $primary_key = 'ID';
32	public $groups = false;
33	public $readonly = true;
34	public $ready = false;
35	public $group_id = 0;
36	public $list_page = 1;
37	public $page_size = 10;
38	public $coltypes = array();
39
40	/** private properties */
41	protected $conn;
42	protected $prop = array();
43	protected $fieldmap = array();
44
45	protected $filter = '';
46	protected $result = null;
47	protected $ldap_result = null;
48	protected $sort_col = '';
49	protected $mail_domain = '';
50	protected $debug = false;
51
52	private $base_dn = '';
53	private $groups_base_dn = '';
54	private $group_cache = array();
55	private $group_members = array();
56
57	private $vlv_active = false;
58	private $vlv_count = 0;
59
60
61	/**
62	* Object constructor
63	*
64	* @param array LDAP connection properties
65	* @param boolean Enables debug mode
66	* @param string Current user mail domain name
67	* @param integer User-ID
68	*/
69	function __construct($p, $debug=false, $mail_domain=NULL)
70	{
71	$this->prop = $p;
72
73	// check if groups are configured
74	if (is_array($p['groups']) and count($p['groups']))
75	$this->groups = true;
76
77	// fieldmap property is given
78	if (is_array($p['fieldmap'])) {
79	foreach ($p['fieldmap'] as $rf => $lf)
80	$this->fieldmap[$rf] = $this->_attr_name(strtolower($lf));
81	}
82	else {
83	// read deprecated *_field properties to remain backwards compatible
84	foreach ($p as $prop => $value)
85	if (preg_match('/^(.+)_field$/', $prop, $matches))
86	$this->fieldmap[$matches[1]] = $this->_attr_name(strtolower($value));
87	}
88
89	// use fieldmap to advertise supported coltypes to the application
90	foreach ($this->fieldmap as $col => $lf) {
91	list($col, $type) = explode(':', $col);
92	if (!is_array($this->coltypes[$col])) {
93	$subtypes = $type ? array($type) : null;
94	$this->coltypes[$col] = array('limit' => 2, 'subtypes' => $subtypes);
95	}
96	elseif ($type) {
97	$this->coltypes[$col]['subtypes'][] = $type;
98	$this->coltypes[$col]['limit']++;
99	}
100	if ($type && !$this->fieldmap[$col])
101	$this->fieldmap[$col] = $lf;
102	}
103
104	if ($this->fieldmap['street'] && $this->fieldmap['locality'])
105	$this->coltypes['address'] = array('limit' => 1);
106	else if ($this->coltypes['address'])
107	$this->coltypes['address'] = array('type' => 'textarea', 'childs' => null, 'limit' => 1, 'size' => 40);
108
109	// make sure 'required_fields' is an array
110	if (!is_array($this->prop['required_fields']))
111	$this->prop['required_fields'] = (array) $this->prop['required_fields'];
112
113	foreach ($this->prop['required_fields'] as $key => $val)
114	$this->prop['required_fields'][$key] = $this->_attr_name(strtolower($val));
115
116	$this->sort_col = is_array($p['sort']) ? $p['sort'][0] : $p['sort'];
117	$this->debug = $debug;
118	$this->mail_domain = $mail_domain;
119
120	$this->_connect();
121	}
122
123
124	/**
125	* Establish a connection to the LDAP server
126	*/
127	private function _connect()
128	{
129	global $RCMAIL;
130
131	if (!function_exists('ldap_connect'))
132	raise_error(array('code' => 100, 'type' => 'ldap',
133	'file' => __FILE__, 'line' => __LINE__,
134	'message' => "No ldap support in this installation of PHP"),
135	true, true);
136
137	if (is_resource($this->conn))
138	return true;
139
140	if (!is_array($this->prop['hosts']))
141	$this->prop['hosts'] = array($this->prop['hosts']);
142
143	if (empty($this->prop['ldap_version']))
144	$this->prop['ldap_version'] = 3;
145
146	foreach ($this->prop['hosts'] as $host)
147	{
148	$host = idn_to_ascii(rcube_parse_host($host));
149	$this->_debug("C: Connect [$host".($this->prop['port'] ? ':'.$this->prop['port'] : '')."]");
150
151	if ($lc = @ldap_connect($host, $this->prop['port']))
152	{
153	if ($this->prop['use_tls']===true)
154	if (!ldap_start_tls($lc))
155	continue;
156
157	$this->_debug("S: OK");
158
159	ldap_set_option($lc, LDAP_OPT_PROTOCOL_VERSION, $this->prop['ldap_version']);
160	$this->prop['host'] = $host;
161	$this->conn = $lc;
162	break;
163	}
164	$this->_debug("S: NOT OK");
165	}
166
167	if (is_resource($this->conn))
168	{
169	$this->ready = true;
170
171	$bind_pass = $this->prop['bind_pass'];
172	$bind_user = $this->prop['bind_user'];
173	$bind_dn = $this->prop['bind_dn'];
174	$this->base_dn = $this->prop['base_dn'];
175
176	// User specific access, generate the proper values to use.
177	if ($this->prop['user_specific']) {
178	// No password set, use the session password
179	if (empty($bind_pass)) {
180	$bind_pass = $RCMAIL->decrypt($_SESSION['password']);
181	}
182
183	// Get the pieces needed for variable replacement.
184	if ($fu = $RCMAIL->user->get_username())
185	list($u, $d) = explode('@', $fu);
186	else
187	$d = $this->mail_domain;
188
189	$dc = 'dc='.strtr($d, array('.' => ',dc=')); // hierarchal domain string
190
191	$replaces = array('%dc' => $dc, '%d' => $d, '%fu' => $fu, '%u' => $u);
192
193	if ($this->prop['search_base_dn'] && $this->prop['search_filter']) {
194	// Search for the dn to use to authenticate
195	$this->prop['search_base_dn'] = strtr($this->prop['search_base_dn'], $replaces);
196	$this->prop['search_filter'] = strtr($this->prop['search_filter'], $replaces);
197
198	$this->_debug("S: searching with base {$this->prop['search_base_dn']} for {$this->prop['search_filter']}");
199
200	$res = ldap_search($this->conn, $this->prop['search_base_dn'], $this->prop['search_filter'], array('uid'));
201	if ($res && ($entry = ldap_first_entry($this->conn, $res))) {
202	$bind_dn = ldap_get_dn($this->conn, $entry);
203
204	$this->_debug("S: search returned dn: $bind_dn");
205
206	if ($bind_dn) {
207	$dn = ldap_explode_dn($bind_dn, 1);
208	$replaces['%dn'] = $dn[0];
209	}
210	}
211	}
212	// Replace the bind_dn and base_dn variables.
213	$bind_dn = strtr($bind_dn, $replaces);
214	$this->base_dn = strtr($this->base_dn, $replaces);
215
216	if (empty($bind_user)) {
217	$bind_user = $u;
218	}
219	}
220
221	if (!empty($bind_pass)) {
222	if (!empty($bind_dn)) {
223	$this->ready = $this->_bind($bind_dn, $bind_pass);
224	}
225	else if (!empty($this->prop['auth_cid'])) {
226	$this->ready = $this->_sasl_bind($this->prop['auth_cid'], $bind_pass, $bind_user);
227	}
228	else {
229	$this->ready = $this->_sasl_bind($bind_user, $bind_pass);
230	}
231	}
232	}
233	else
234	raise_error(array('code' => 100, 'type' => 'ldap',
235	'file' => __FILE__, 'line' => __LINE__,
236	'message' => "Could not connect to any LDAP server, last tried $host:{$this->prop[port]}"), true);
237
238	// See if the directory is writeable.
239	if ($this->prop['writable']) {
240	$this->readonly = false;
241	} // end if
242	}
243
244
245	/**
246	* Bind connection with (SASL-) user and password
247	*
248	* @param string $authc Authentication user
249	* @param string $pass Bind password
250	* @param string $authz Autorization user
251	*
252	* @return boolean True on success, False on error
253	*/
254	private function _sasl_bind($authc, $pass, $authz=null)
255	{
256	if (!$this->conn) {
257	return false;
258	}
259
260	if (!function_exists('ldap_sasl_bind')) {
261	raise_error(array('code' => 100, 'type' => 'ldap',
262	'file' => __FILE__, 'line' => __LINE__,
263	'message' => "Unable to bind: ldap_sasl_bind() not exists"),
264	true, true);
265	}
266
267	if (!empty($authz)) {
268	$authz = 'u:' . $authz;
269	}
270
271	if (!empty($this->prop['auth_method'])) {
272	$method = $this->prop['auth_method'];
273	}
274	else {
275	$method = 'DIGEST-MD5';
276	}
277
278	$this->_debug("C: Bind [mech: $method, authc: $authc, authz: $authz] [pass: $pass]");
279
280	if (ldap_sasl_bind($this->conn, NULL, $pass, $method, NULL, $authc, $authz)) {
281	$this->_debug("S: OK");
282	return true;
283	}
284
285	$this->_debug("S: ".ldap_error($this->conn));
286
287	raise_error(array(
288	'code' => ldap_errno($this->conn), 'type' => 'ldap',
289	'file' => __FILE__, 'line' => __LINE__,
290	'message' => "Bind failed for authcid=$authc ".ldap_error($this->conn)),
291	true);
292
293	return false;
294	}
295
296
297	/**
298	* Bind connection with DN and password
299	*
300	* @param string Bind DN
301	* @param string Bind password
302	*
303	* @return boolean True on success, False on error
304	*/
305	private function _bind($dn, $pass)
306	{
307	if (!$this->conn) {
308	return false;
309	}
310
311	$this->_debug("C: Bind [dn: $dn] [pass: $pass]");
312
313	if (@ldap_bind($this->conn, $dn, $pass)) {
314	$this->_debug("S: OK");
315	return true;
316	}
317
318	$this->_debug("S: ".ldap_error($this->conn));
319
320	raise_error(array(
321	'code' => ldap_errno($this->conn), 'type' => 'ldap',
322	'file' => __FILE__, 'line' => __LINE__,
323	'message' => "Bind failed for dn=$dn: ".ldap_error($this->conn)),
324	true);
325
326	return false;
327	}
328
329
330	/**
331	* Close connection to LDAP server
332	*/
333	function close()
334	{
335	if ($this->conn)
336	{
337	$this->_debug("C: Close");
338	ldap_unbind($this->conn);
339	$this->conn = null;
340	}
341	}
342
343
344	/**
345	* Returns address book name
346	*
347	* @return string Address book name
348	*/
349	function get_name()
350	{
351	return $this->prop['name'];
352	}
353
354
355	/**
356	* Set internal list page
357	*
358	* @param number $page Page number to list
359	*/
360	function set_page($page)
361	{
362	$this->list_page = (int)$page;
363	}
364
365
366	/**
367	* Set internal page size
368	*
369	* @param number $size Number of messages to display on one page
370	*/
371	function set_pagesize($size)
372	{
373	$this->page_size = (int)$size;
374	}
375
376
377	/**
378	* Save a search string for future listings
379	*
380	* @param string $filter Filter string
381	*/
382	function set_search_set($filter)
383	{
384	$this->filter = $filter;
385	}
386
387
388	/**
389	* Getter for saved search properties
390	*
391	* @return mixed Search properties used by this class
392	*/
393	function get_search_set()
394	{
395	return $this->filter;
396	}
397
398
399	/**
400	* Reset all saved results and search parameters
401	*/
402	function reset()
403	{
404	$this->result = null;
405	$this->ldap_result = null;
406	$this->filter = '';
407	}
408
409
410	/**
411	* List the current set of contact records
412	*
413	* @param array List of cols to show
414	* @param int Only return this number of records
415	*
416	* @return array Indexed list of contact records, each a hash array
417	*/
418	function list_records($cols=null, $subset=0)
419	{
420	// add general filter to query
421	if (!empty($this->prop['filter']) && empty($this->filter))
422	{
423	$filter = $this->prop['filter'];
424	$this->set_search_set($filter);
425	}
426
427	// exec LDAP search if no result resource is stored
428	if ($this->conn && !$this->ldap_result)
429	$this->_exec_search();
430
431	// count contacts for this user
432	$this->result = $this->count();
433
434	// we have a search result resource
435	if ($this->ldap_result && $this->result->count > 0)
436	{
437	// sorting still on the ldap server
438	if ($this->sort_col && $this->prop['scope'] !== 'base' && !$this->vlv_active)
439	ldap_sort($this->conn, $this->ldap_result, $this->sort_col);
440
441	// start and end of the page
442	$start_row = $this->vlv_active ? 0 : $this->result->first;
443	$start_row = $subset < 0 ? $start_row + $this->page_size + $subset : $start_row;
444	$last_row = $this->result->first + $this->page_size;
445	$last_row = $subset != 0 ? $start_row + abs($subset) : $last_row;
446
447	// get all entries from the ldap server
448	$entries = ldap_get_entries($this->conn, $this->ldap_result);
449
450	// filtering for group members
451	if ($this->groups and $this->group_id)
452	{
453	$count = 0;
454	$members = array();
455	foreach ($entries as $entry)
456	{
457	if ($this->group_members[base64_encode($entry['dn'])])
458	{
459	$members[] = $entry;
460	$count++;
461	}
462	}
463	$entries = $members;
464	$entries['count'] = $count;
465	$this->result->count = $count;
466	}
467
468	// filter entries for this page
469	for ($i = $start_row; $i < min($entries['count'], $last_row); $i++)
470	$this->result->add($this->_ldap2result($entries[$i]));
471	}
472	return $this->result;
473	}
474
475
476	/**
477	* Search contacts
478	*
479	* @param mixed $fields The field name of array of field names to search in
480	* @param mixed $value Search value (or array of values when $fields is array)
481	* @param boolean $strict True for strict, False for partial (fuzzy) matching
482	* @param boolean $select True if results are requested, False if count only
483	* @param boolean $nocount (Not used)
484	* @param array $required List of fields that cannot be empty
485	*
486	* @return array Indexed list of contact records and 'count' value
487	*/
488	function search($fields, $value, $strict=false, $select=true, $nocount=false, $required=array())
489	{
490	// special treatment for ID-based search
491	if ($fields == 'ID' \|\| $fields == $this->primary_key)
492	{
493	$ids = !is_array($value) ? explode(',', $value) : $value;
494	$result = new rcube_result_set();
495	foreach ($ids as $id)
496	{
497	if ($rec = $this->get_record($id, true))
498	{
499	$result->add($rec);
500	$result->count++;
501	}
502	}
503	return $result;
504	}
505
506	// use AND operator for advanced searches
507	$filter = is_array($value) ? '(&' : '(\|';
508	$wc = !$strict && $this->prop['fuzzy_search'] ? '*' : '';
509
510	if ($fields == '*')
511	{
512	// search_fields are required for fulltext search
513	if (empty($this->prop['search_fields']))
514	{
515	$this->set_error(self::ERROR_SEARCH, 'nofulltextsearch');
516	$this->result = new rcube_result_set();
517	return $this->result;
518	}
519	if (is_array($this->prop['search_fields']))
520	{
521	foreach ($this->prop['search_fields'] as $field) {
522	$filter .= "($field=$wc" . $this->_quote_string($value) . "$wc)";
523	}
524	}
525	}
526	else
527	{
528	foreach ((array)$fields as $idx => $field) {
529	$val = is_array($value) ? $value[$idx] : $value;
530	if ($f = $this->_map_field($field)) {
531	$filter .= "($f=$wc" . $this->_quote_string($val) . "$wc)";
532	}
533	}
534	}
535	$filter .= ')';
536
537	// add required (non empty) fields filter
538	$req_filter = '';
539	foreach ((array)$required as $field)
540	if ($f = $this->_map_field($field))
541	$req_filter .= "($f=*)";
542
543	if (!empty($req_filter))
544	$filter = '(&' . $req_filter . $filter . ')';
545
546	// avoid double-wildcard if $value is empty
547	$filter = preg_replace('/\+/', '', $filter);
548
549	// add general filter to query
550	if (!empty($this->prop['filter']))
551	$filter = '(&(' . preg_replace('/^\(\|\)$/', '', $this->prop['filter']) . ')' . $filter . ')';
552
553	// set filter string and execute search
554	$this->set_search_set($filter);
555	$this->_exec_search();
556
557	if ($select)
558	$this->list_records();
559	else
560	$this->result = $this->count();
561
562	return $this->result;
563	}
564
565
566	/**
567	* Count number of available contacts in database
568	*
569	* @return object rcube_result_set Resultset with values for 'count' and 'first'
570	*/
571	function count()
572	{
573	$count = 0;
574	if ($this->conn && $this->ldap_result) {
575	$count = $this->vlv_active ? $this->vlv_count : ldap_count_entries($this->conn, $this->ldap_result);
576	} // end if
577	elseif ($this->conn) {
578	// We have a connection but no result set, attempt to get one.
579	if (empty($this->filter)) {
580	// The filter is not set, set it.
581	$this->filter = $this->prop['filter'];
582	} // end if
583	$this->_exec_search(true);
584	if ($this->ldap_result) {
585	$count = ldap_count_entries($this->conn, $this->ldap_result);
586	} // end if
587	} // end else
588
589	return new rcube_result_set($count, ($this->list_page-1) * $this->page_size);
590	}
591
592
593	/**
594	* Return the last result set
595	*
596	* @return object rcube_result_set Current resultset or NULL if nothing selected yet
597	*/
598	function get_result()
599	{
600	return $this->result;
601	}
602
603
604	/**
605	* Get a specific contact record
606	*
607	* @param mixed Record identifier
608	* @param boolean Return as associative array
609	*
610	* @return mixed Hash array or rcube_result_set with all record fields
611	*/
612	function get_record($dn, $assoc=false)
613	{
614	$res = null;
615	if ($this->conn && $dn)
616	{
617	$dn = base64_decode($dn);
618
619	$this->_debug("C: Read [dn: $dn] [(objectclass=*)]");
620
621	if ($this->ldap_result = @ldap_read($this->conn, $dn, '(objectclass=*)', array_values($this->fieldmap)))
622	$entry = ldap_first_entry($this->conn, $this->ldap_result);
623	else
624	$this->_debug("S: ".ldap_error($this->conn));
625
626	if ($entry && ($rec = ldap_get_attributes($this->conn, $entry)))
627	{
628	$this->_debug("S: OK"/* . print_r($rec, true)*/);
629
630	$rec = array_change_key_case($rec, CASE_LOWER);
631
632	// Add in the dn for the entry.
633	$rec['dn'] = $dn;
634	$res = $this->_ldap2result($rec);
635	$this->result = new rcube_result_set(1);
636	$this->result->add($res);
637	}
638	}
639
640	return $assoc ? $res : $this->result;
641	}
642
643
644	/**
645	* Check the given data before saving.
646	* If input not valid, the message to display can be fetched using get_error()
647	*
648	* @param array Assoziative array with data to save
649	*
650	* @return boolean True if input is valid, False if not.
651	*/
652	public function validate($save_data)
653	{
654	// check for name input
655	if (empty($save_data['name'])) {
656	$this->set_error('warning', 'nonamewarning');
657	return false;
658	}
659
660	// validate e-mail addresses
661	return parent::validate($save_data);
662	}
663
664
665	/**
666	* Create a new contact record
667	*
668	* @param array Hash array with save data
669	*
670	* @return encoded record ID on success, False on error
671	*/
672	function insert($save_cols)
673	{
674	// Map out the column names to their LDAP ones to build the new entry.
675	$newentry = array();
676	$newentry['objectClass'] = $this->prop['LDAP_Object_Classes'];
677	foreach ($this->fieldmap as $col => $fld) {
678	$val = $save_cols[$col];
679	if (is_array($val))
680	$val = array_filter($val); // remove empty entries
681	if ($fld && $val) {
682	// The field does exist, add it to the entry.
683	$newentry[$fld] = $val;
684	} // end if
685	} // end foreach
686
687	// Verify that the required fields are set.
688	$missing = null;
689	foreach ($this->prop['required_fields'] as $fld) {
690	if (!isset($newentry[$fld])) {
691	$missing[] = $fld;
692	}
693	}
694
695	// abort process if requiered fields are missing
696	// TODO: generate message saying which fields are missing
697	if ($missing) {
698	$this->set_error(self::ERROR_INCOMPLETE, 'formincomplete');
699	return false;
700	}
701
702	// Build the new entries DN.
703	$dn = $this->prop['LDAP_rdn'].'='.$this->_quote_string($newentry[$this->prop['LDAP_rdn']], true).','.$this->base_dn;
704
705	$this->_debug("C: Add [dn: $dn]: ".print_r($newentry, true));
706
707	$res = ldap_add($this->conn, $dn, $newentry);
708	if ($res === FALSE) {
709	$this->_debug("S: ".ldap_error($this->conn));
710	$this->set_error(self::ERROR_SAVING, 'errorsaving');
711	return false;
712	} // end if
713
714	$this->_debug("S: OK");
715
716	// add new contact to the selected group
717	if ($this->groups)
718	$this->add_to_group($this->group_id, base64_encode($dn));
719
720	return base64_encode($dn);
721	}
722
723
724	/**
725	* Update a specific contact record
726	*
727	* @param mixed Record identifier
728	* @param array Hash array with save data
729	*
730	* @return boolean True on success, False on error
731	*/
732	function update($id, $save_cols)
733	{
734	$record = $this->get_record($id, true);
735	$result = $this->get_result();
736	$record = $result->first();
737
738	$newdata = array();
739	$replacedata = array();
740	$deletedata = array();
741
742	// flatten composite fields in $record
743	if (is_array($record['address'])) {
744	foreach ($record['address'] as $i => $struct) {
745	foreach ($struct as $col => $val) {
746	$record[$col][$i] = $val;
747	}
748	}
749	}
750
751	foreach ($this->fieldmap as $col => $fld) {
752	$val = $save_cols[$col];
753	if ($fld) {
754	// remove empty array values
755	if (is_array($val))
756	$val = array_filter($val);
757	// The field does exist compare it to the ldap record.
758	if ($record[$col] != $val) {
759	// Changed, but find out how.
760	if (!isset($record[$col])) {
761	// Field was not set prior, need to add it.
762	$newdata[$fld] = $val;
763	} // end if
764	elseif ($val == '') {
765	// Field supplied is empty, verify that it is not required.
766	if (!in_array($fld, $this->prop['required_fields'])) {
767	// It is not, safe to clear.
768	$deletedata[$fld] = $record[$col];
769	} // end if
770	} // end elseif
771	else {
772	// The data was modified, save it out.
773	$replacedata[$fld] = $val;
774	} // end else
775	} // end if
776	} // end if
777	} // end foreach
778
779	$dn = base64_decode($id);
780
781	// Update the entry as required.
782	if (!empty($deletedata)) {
783	// Delete the fields.
784	$this->_debug("C: Delete [dn: $dn]: ".print_r($deletedata, true));
785	if (!ldap_mod_del($this->conn, $dn, $deletedata)) {
786	$this->_debug("S: ".ldap_error($this->conn));
787	$this->set_error(self::ERROR_SAVING, 'errorsaving');
788	return false;
789	}
790	$this->_debug("S: OK");
791	} // end if
792
793	if (!empty($replacedata)) {
794	// Handle RDN change
795	if ($replacedata[$this->prop['LDAP_rdn']]) {
796	$newdn = $this->prop['LDAP_rdn'].'='
797	.$this->_quote_string($replacedata[$this->prop['LDAP_rdn']], true)
798	.','.$this->base_dn;
799	if ($dn != $newdn) {
800	$newrdn = $this->prop['LDAP_rdn'].'='
801	.$this->_quote_string($replacedata[$this->prop['LDAP_rdn']], true);
802	unset($replacedata[$this->prop['LDAP_rdn']]);
803	}
804	}
805	// Replace the fields.
806	if (!empty($replacedata)) {
807	$this->_debug("C: Replace [dn: $dn]: ".print_r($replacedata, true));
808	if (!ldap_mod_replace($this->conn, $dn, $replacedata)) {
809	$this->_debug("S: ".ldap_error($this->conn));
810	return false;
811	}
812	$this->_debug("S: OK");
813	} // end if
814	} // end if
815
816	if (!empty($newdata)) {
817	// Add the fields.
818	$this->_debug("C: Add [dn: $dn]: ".print_r($newdata, true));
819	if (!ldap_mod_add($this->conn, $dn, $newdata)) {
820	$this->_debug("S: ".ldap_error($this->conn));
821	$this->set_error(self::ERROR_SAVING, 'errorsaving');
822	return false;
823	}
824	$this->_debug("S: OK");
825	} // end if
826
827	// Handle RDN change
828	if (!empty($newrdn)) {
829	$this->_debug("C: Rename [dn: $dn] [dn: $newrdn]");
830	if (!ldap_rename($this->conn, $dn, $newrdn, NULL, TRUE)) {
831	$this->_debug("S: ".ldap_error($this->conn));
832	return false;
833	}
834	$this->_debug("S: OK");
835
836	// change the group membership of the contact
837	if ($this->groups)
838	{
839	$group_ids = $this->get_record_groups(base64_encode($dn));
840	foreach ($group_ids as $group_id)
841	{
842	$this->remove_from_group($group_id, base64_encode($dn));
843	$this->add_to_group($group_id, base64_encode($newdn));
844	}
845	}
846	return base64_encode($newdn);
847	}
848
849	return true;
850	}
851
852
853	/**
854	* Mark one or more contact records as deleted
855	*
856	* @param array Record identifiers
857	* @param boolean Remove record(s) irreversible (unsupported)
858	*
859	* @return boolean True on success, False on error
860	*/
861	function delete($ids, $force=true)
862	{
863	if (!is_array($ids)) {
864	// Not an array, break apart the encoded DNs.
865	$ids = explode(',', $ids);
866	} // end if
867
868	foreach ($ids as $id) {
869	$dn = base64_decode($id);
870	$this->_debug("C: Delete [dn: $dn]");
871	// Delete the record.
872	$res = ldap_delete($this->conn, $dn);
873	if ($res === FALSE) {
874	$this->_debug("S: ".ldap_error($this->conn));
875	$this->set_error(self::ERROR_SAVING, 'errorsaving');
876	return false;
877	} // end if
878	$this->_debug("S: OK");
879
880	// remove contact from all groups where he was member
881	if ($this->groups)
882	{
883	$group_ids = $this->get_record_groups(base64_encode($dn));
884	foreach ($group_ids as $group_id)
885	{
886	$this->remove_from_group($group_id, base64_encode($dn));
887	}
888	}
889	} // end foreach
890
891	return count($ids);
892	}
893
894
895	/**
896	* Execute the LDAP search based on the stored credentials
897	*/
898	private function _exec_search($count = false)
899	{
900	if ($this->ready)
901	{
902	$filter = $this->filter ? $this->filter : '(objectclass=*)';
903	$function = $this->prop['scope'] == 'sub' ? 'ldap_search' : ($this->prop['scope'] == 'base' ? 'ldap_read' : 'ldap_list');
904
905	$this->_debug("C: Search [$filter]");
906
907	// when using VLV, we get the total count by...
908	if (!$count && $function != 'ldap_read' && $this->prop['vlv']) {
909	// ...either reading numSubOrdinates attribute
910	if ($this->prop['numsub_filter'] && ($result_count = @$function($this->conn, $this->base_dn, $this->prop['numsub_filter'], array('numSubOrdinates'), 0, 0, 0))) {
911	$counts = ldap_get_entries($this->conn, $result_count);
912	for ($this->vlv_count = $j = 0; $j < $counts['count']; $j++)
913	$this->vlv_count += $counts[$j]['numsubordinates'][0];
914	$this->_debug("D: total numsubordinates = " . $this->vlv_count);
915	}
916	else // ...or by fetching all records dn and count them
917	$this->vlv_count = $this->_exec_search(true);
918
919	$this->vlv_active = $this->_vlv_set_controls();
920	}
921
922	// only fetch dn for count (should keep the payload low)
923	$attrs = $count ? array('dn') : array_values($this->fieldmap);
924	if ($this->ldap_result = @$function($this->conn, $this->base_dn, $filter,
925	$attrs, 0, (int)$this->prop['sizelimit'], (int)$this->prop['timelimit']))
926	{
927	$this->_debug("S: ".ldap_count_entries($this->conn, $this->ldap_result)." record(s)");
928	if ($err = ldap_errno($this->conn))
929	$this->_debug("S: Error: " .ldap_err2str($err));
930	return true;
931	}
932	else
933	{
934	$this->_debug("S: ".ldap_error($this->conn));
935	}
936	}
937
938	return false;
939	}
940
941	/**
942	* Set server controls for Virtual List View (paginated listing)
943	*/
944	private function _vlv_set_controls()
945	{
946	$sort_ctrl = array('oid' => "1.2.840.113556.1.4.473", 'value' => $this->_sort_ber_encode((array)$this->prop['sort']));
947	$vlv_ctrl = array('oid' => "2.16.840.1.113730.3.4.9", 'value' => $this->_vlv_ber_encode(($offset = ($this->list_page-1) * $this->page_size + 1), $this->page_size), 'iscritical' => true);
948
949	$this->_debug("C: set controls sort=" . join(' ', unpack('H'.(strlen($sort_ctrl['value'])*2), $sort_ctrl['value'])) . " ({$this->sort_col});"
950	. " vlv=" . join(' ', (unpack('H'.(strlen($vlv_ctrl['value'])*2), $vlv_ctrl['value']))) . " ($offset)");
951
952	if (!ldap_set_option($this->conn, LDAP_OPT_SERVER_CONTROLS, array($sort_ctrl, $vlv_ctrl))) {
953	$this->_debug("S: ".ldap_error($this->conn));
954	$this->set_error(self::ERROR_SEARCH, 'vlvnotsupported');
955	return false;
956	}
957
958	return true;
959	}
960
961
962	/**
963	* Converts LDAP entry into an array
964	*/
965	private function _ldap2result($rec)
966	{
967	$out = array();
968
969	if ($rec['dn'])
970	$out[$this->primary_key] = base64_encode($rec['dn']);
971
972	foreach ($this->fieldmap as $rf => $lf)
973	{
974	for ($i=0; $i < $rec[$lf]['count']; $i++) {
975	if (!($value = $rec[$lf][$i]))
976	continue;
977	if ($rf == 'email' && $this->mail_domain && !strpos($value, '@'))
978	$out[$rf][] = sprintf('%s@%s', $value, $this->mail_domain);
979	else if (in_array($rf, array('street','zipcode','locality','country','region')))
980	$out['address'][$i][$rf] = $value;
981	else if ($rec[$lf]['count'] > 1)
982	$out[$rf][] = $value;
983	else
984	$out[$rf] = $value;
985	}
986	}
987
988	return $out;
989	}
990
991
992	/**
993	* Return real field name (from fields map)
994	*/
995	private function _map_field($field)
996	{
997	return $this->fieldmap[$field];
998	}
999
1000
1001	/**
1002	* Returns unified attribute name (resolving aliases)
1003	*/
1004	private static function _attr_name($name)
1005	{
1006	// list of known attribute aliases
1007	$aliases = array(
1008	'gn' => 'givenname',
1009	'rfc822mailbox' => 'email',
1010	'userid' => 'uid',
1011	'emailaddress' => 'email',
1012	'pkcs9email' => 'email',
1013	);
1014	return isset($aliases[$name]) ? $aliases[$name] : $name;
1015	}
1016
1017
1018	/**
1019	* Prints debug info to the log
1020	*/
1021	private function _debug($str)
1022	{
1023	if ($this->debug)
1024	write_log('ldap', $str);
1025	}
1026
1027
1028	/**
1029	* Quotes attribute value string
1030	*
1031	* @param string $str Attribute value
1032	* @param bool $dn True if the attribute is a DN
1033	*
1034	* @return string Quoted string
1035	*/
1036	private static function _quote_string($str, $dn=false)
1037	{
1038	// take firt entry if array given
1039	if (is_array($str))
1040	$str = reset($str);
1041
1042	if ($dn)
1043	$replace = array(','=>'\2c', '='=>'\3d', '+'=>'\2b', '<'=>'\3c',
1044	'>'=>'\3e', ';'=>'\3b', '\\'=>'\5c', '"'=>'\22', '#'=>'\23');
1045	else
1046	$replace = array('*'=>'\2a', '('=>'\28', ')'=>'\29', '\\'=>'\5c',
1047	'/'=>'\2f');
1048
1049	return strtr($str, $replace);
1050	}
1051
1052
1053	/**
1054	* Setter for the current group
1055	* (empty, has to be re-implemented by extending class)
1056	*/
1057	function set_group($group_id)
1058	{
1059	if ($group_id)
1060	{
1061	if (!$this->group_cache)
1062	$this->list_groups();
1063
1064	$cache_members = $this->group_cache[$group_id]['members'];
1065
1066	$members = array();
1067	for ($i=0; $i<$cache_members["count"]; $i++)
1068	{
1069	if (!empty($cache_members[$i]))
1070	$members[base64_encode($cache_members[$i])] = 1;
1071	}
1072	$this->group_members = $members;
1073	$this->group_id = $group_id;
1074	}
1075	else
1076	$this->group_id = 0;
1077	}
1078
1079	/**
1080	* List all active contact groups of this source
1081	*
1082	* @param string Optional search string to match group name
1083	* @return array Indexed list of contact groups, each a hash array
1084	*/
1085	function list_groups($search = null)
1086	{
1087	global $RCMAIL;
1088
1089	if (!$this->groups)
1090	return array();
1091
1092	$this->groups_base_dn = ($this->prop['groups']['base_dn']) ?
1093	$this->prop['groups']['base_dn'] : $this->base_dn;
1094
1095	// replace user specific dn
1096	if ($this->prop['user_specific'])
1097	{
1098	$fu = $RCMAIL->user->get_username();
1099	list($u, $d) = explode('@', $fu);
1100	$dc = 'dc='.strtr($d, array('.' => ',dc='));
1101	$replaces = array('%dc' => $dc, '%d' => $d, '%fu' => $fu, '%u' => $u);
1102
1103	$this->groups_base_dn = strtr($this->groups_base_dn, $replaces);
1104	}
1105
1106	$base_dn = $this->groups_base_dn;
1107	$filter = $this->prop['groups']['filter'];
1108
1109	$this->_debug("C: Search [$filter][dn: $base_dn]");
1110
1111	$res = ldap_search($this->conn, $base_dn, $filter, array('cn','member'));
1112	if ($res === false)
1113	{
1114	$this->_debug("S: ".ldap_error($this->conn));
1115	$this->set_error(self::ERROR_SAVING, 'errorsaving');
1116	return array();
1117	}
1118
1119	$ldap_data = ldap_get_entries($this->conn, $res);
1120	$this->_debug("S: ".ldap_count_entries($this->conn, $res)." record(s)");
1121
1122	$groups = array();
1123	$group_sortnames = array();
1124	for ($i=0; $i<$ldap_data["count"]; $i++)
1125	{
1126	$group_name = $ldap_data[$i]['cn'][0];
1127	if (!$search \|\| strstr(strtolower($group_name), strtolower($search)))
1128	{
1129	$group_id = base64_encode($group_name);
1130	$groups[$group_id]['ID'] = $group_id;
1131	$groups[$group_id]['name'] = $group_name;
1132	$groups[$group_id]['members'] = $ldap_data[$i]['member'];
1133	$group_sortnames[] = strtolower($group_name);
1134	}
1135	}
1136	array_multisort($group_sortnames, SORT_ASC, SORT_STRING, $groups);
1137	$this->group_cache = $groups;
1138
1139	return $groups;
1140	}
1141
1142	/**
1143	* Create a contact group with the given name
1144	*
1145	* @param string The group name
1146	* @return mixed False on error, array with record props in success
1147	*/
1148	function create_group($group_name)
1149	{
1150	if (!$this->group_cache)
1151	$this->list_groups();
1152
1153	$base_dn = $this->groups_base_dn;
1154	$new_dn = "cn=$group_name,$base_dn";
1155	$new_gid = base64_encode($group_name);
1156
1157	$new_entry = array(
1158	'objectClass' => $this->prop['groups']['object_classes'],
1159	'cn' => $group_name,
1160	'member' => '',
1161	);
1162
1163	$this->_debug("C: Add [dn: $new_dn]: ".print_r($new_entry, true));
1164
1165	$res = ldap_add($this->conn, $new_dn, $new_entry);
1166	if ($res === false)
1167	{
1168	$this->_debug("S: ".ldap_error($this->conn));
1169	$this->set_error(self::ERROR_SAVING, 'errorsaving');
1170	return false;
1171	}
1172
1173	$this->_debug("S: OK");
1174
1175	return array('id' => $new_gid, 'name' => $group_name);
1176	}
1177
1178	/**
1179	* Delete the given group and all linked group members
1180	*
1181	* @param string Group identifier
1182	* @return boolean True on success, false if no data was changed
1183	*/
1184	function delete_group($group_id)
1185	{
1186	if (!$this->group_cache)
1187	$this->list_groups();
1188
1189	$base_dn = $this->groups_base_dn;
1190	$group_name = $this->group_cache[$group_id]['name'];
1191	$del_dn = "cn=$group_name,$base_dn";
1192
1193	$this->_debug("C: Delete [dn: $del_dn]");
1194
1195	$res = ldap_delete($this->conn, $del_dn);
1196	if ($res === false)
1197	{
1198	$this->_debug("S: ".ldap_error($this->conn));
1199	$this->set_error(self::ERROR_SAVING, 'errorsaving');
1200	return false;
1201	}
1202
1203	$this->_debug("S: OK");
1204
1205	return true;
1206	}
1207
1208	/**
1209	* Rename a specific contact group
1210	*
1211	* @param string Group identifier
1212	* @param string New name to set for this group
1213	* @param string New group identifier (if changed, otherwise don't set)
1214	* @return boolean New name on success, false if no data was changed
1215	*/
1216	function rename_group($group_id, $new_name, &$new_gid)
1217	{
1218	if (!$this->group_cache)
1219	$this->list_groups();
1220
1221	$base_dn = $this->groups_base_dn;
1222	$group_name = $this->group_cache[$group_id]['name'];
1223	$old_dn = "cn=$group_name,$base_dn";
1224	$new_rdn = "cn=$new_name";
1225	$new_gid = base64_encode($new_name);
1226
1227	$this->_debug("C: Rename [dn: $old_dn] [dn: $new_rdn]");
1228
1229	$res = ldap_rename($this->conn, $old_dn, $new_rdn, NULL, TRUE);
1230	if ($res === false)
1231	{
1232	$this->_debug("S: ".ldap_error($this->conn));
1233	$this->set_error(self::ERROR_SAVING, 'errorsaving');
1234	return false;
1235	}
1236
1237	$this->_debug("S: OK");
1238
1239	return $new_name;
1240	}
1241
1242	/**
1243	* Add the given contact records the a certain group
1244	*
1245	* @param string Group identifier
1246	* @param array List of contact identifiers to be added
1247	* @return int Number of contacts added
1248	*/
1249	function add_to_group($group_id, $contact_ids)
1250	{
1251	if (!$this->group_cache)
1252	$this->list_groups();
1253
1254	$base_dn = $this->groups_base_dn;
1255	$group_name = $this->group_cache[$group_id]['name'];
1256	$group_dn = "cn=$group_name,$base_dn";
1257
1258	$new_attrs = array();
1259	foreach (explode(",", $contact_ids) as $id)
1260	$new_attrs['member'][] = base64_decode($id);
1261
1262	$this->_debug("C: Add [dn: $group_dn]: ".print_r($new_attrs, true));
1263
1264	$res = ldap_mod_add($this->conn, $group_dn, $new_attrs);
1265	if ($res === false)
1266	{
1267	$this->_debug("S: ".ldap_error($this->conn));
1268	$this->set_error(self::ERROR_SAVING, 'errorsaving');
1269	return 0;
1270	}
1271
1272	$this->_debug("S: OK");
1273
1274	return count($new_attrs['member']);
1275	}
1276
1277	/**
1278	* Remove the given contact records from a certain group
1279	*
1280	* @param string Group identifier
1281	* @param array List of contact identifiers to be removed
1282	* @return int Number of deleted group members
1283	*/
1284	function remove_from_group($group_id, $contact_ids)
1285	{
1286	if (!$this->group_cache)
1287	$this->list_groups();
1288
1289	$base_dn = $this->groups_base_dn;
1290	$group_name = $this->group_cache[$group_id]['name'];
1291	$group_dn = "cn=$group_name,$base_dn";
1292
1293	$del_attrs = array();
1294	foreach (explode(",", $contact_ids) as $id)
1295	$del_attrs['member'][] = base64_decode($id);
1296
1297	$this->_debug("C: Delete [dn: $group_dn]: ".print_r($del_attrs, true));
1298
1299	$res = ldap_mod_del($this->conn, $group_dn, $del_attrs);
1300	if ($res === false)
1301	{
1302	$this->_debug("S: ".ldap_error($this->conn));
1303	$this->set_error(self::ERROR_SAVING, 'errorsaving');
1304	return 0;
1305	}
1306
1307	$this->_debug("S: OK");
1308
1309	return count($del_attrs['member']);
1310	}
1311
1312	/**
1313	* Get group assignments of a specific contact record
1314	*
1315	* @param mixed Record identifier
1316	*
1317	* @return array List of assigned groups as ID=>Name pairs
1318	* @since 0.5-beta
1319	*/
1320	function get_record_groups($contact_id)
1321	{
1322	if (!$this->groups)
1323	return array();
1324
1325	$base_dn = $this->groups_base_dn;
1326	$contact_dn = base64_decode($contact_id);
1327	$filter = strtr("(member=$contact_dn)", array('\\' => '\\\\'));
1328
1329	$this->_debug("C: Search [$filter][dn: $base_dn]");
1330
1331	$res = ldap_search($this->conn, $base_dn, $filter, array('cn'));
1332	if ($res === false)
1333	{
1334	$this->_debug("S: ".ldap_error($this->conn));
1335	$this->set_error(self::ERROR_SAVING, 'errorsaving');
1336	return array();
1337	}
1338	$ldap_data = ldap_get_entries($this->conn, $res);
1339	$this->_debug("S: ".ldap_count_entries($this->conn, $res)." record(s)");
1340
1341	$groups = array();
1342	for ($i=0; $i<$ldap_data["count"]; $i++)
1343	{
1344	$group_name = $ldap_data[$i]['cn'][0];
1345	$group_id = base64_encode($group_name);
1346	$groups[$group_id] = $group_id;
1347	}
1348	return $groups;
1349	}
1350
1351
1352	/**
1353	* Generate BER encoded string for Virtual List View option
1354	*
1355	* @param integer List offset (first record)
1356	* @param integer Records per page
1357	* @return string BER encoded option value
1358	*/
1359	private function _vlv_ber_encode($offset, $rpp)
1360	{
1361	# this string is ber-encoded, php will prefix this value with:
1362	# 04 (octet string) and 10 (length of 16 bytes)
1363	# the code behind this string is broken down as follows:
1364	# 30 = ber sequence with a length of 0e (14) bytes following
1365	# 20 = type integer (in two's complement form) with 2 bytes following (beforeCount): 01 00 (ie 0)
1366	# 20 = type integer (in two's complement form) with 2 bytes following (afterCount): 01 18 (ie 25-1=24)
1367	# a0 = type context-specific/constructed with a length of 06 (6) bytes following
1368	# 20 = type integer with 2 bytes following (offset): 01 01 (ie 1)
1369	# 20 = type integer with 2 bytes following (contentCount): 01 00
1370	# the following info was taken from the ISO/IEC 8825-1:2003 x.690 standard re: the
1371	# encoding of integer values (note: these values are in
1372	# two-complement form so since offset will never be negative bit 8 of the
1373	# leftmost octet should never by set to 1):
1374	# 8.3.2: If the contents octets of an integer value encoding consist
1375	# of more than one octet, then the bits of the first octet (rightmost) and bit 8
1376	# of the second (to the left of first octet) octet:
1377	# a) shall not all be ones; and
1378	# b) shall not all be zero
1379
1380	# construct the string from right to left
1381	$str = "020100"; # contentCount
1382
1383	$ber_val = self::_ber_encode_int($offset); // returns encoded integer value in hex format
1384
1385	// calculate octet length of $ber_val
1386	$str = self::_ber_addseq($ber_val, '02') . $str;
1387
1388	// now compute length over $str
1389	$str = self::_ber_addseq($str, 'a0');
1390
1391	// now tack on records per page
1392	$str = sprintf("0201000201%02x", min(255, $rpp)-1) . $str;
1393
1394	// now tack on sequence identifier and length
1395	$str = self::_ber_addseq($str, '30');
1396
1397	return pack('H'.strlen($str), $str);
1398	}
1399
1400
1401	/**
1402	* create ber encoding for sort control
1403	*
1404	* @pararm array List of cols to sort by
1405	* @return string BER encoded option value
1406	*/
1407	private function _sort_ber_encode($sortcols)
1408	{
1409	$str = '';
1410	foreach (array_reverse((array)$sortcols) as $col) {
1411	$ber_val = self::_string2hex($col);
1412
1413	# 30 = ber sequence with a length of octet value
1414	# 04 = octet string with a length of the ascii value
1415	$oct = self::_ber_addseq($ber_val, '04');
1416	$str = self::_ber_addseq($oct, '30') . $str;
1417	}
1418
1419	// now tack on sequence identifier and length
1420	$str = self::_ber_addseq($str, '30');
1421
1422	return pack('H'.strlen($str), $str);
1423	}
1424
1425	/**
1426	* Add BER sequence with correct length and the given identifier
1427	*/
1428	private static function _ber_addseq($str, $identifier)
1429	{
1430	$len = dechex(strlen($str)/2);
1431	if (strlen($len) % 2 != 0)
1432	$len = '0'.$len;
1433
1434	return $identifier . $len . $str;
1435	}
1436
1437	/**
1438	* Returns BER encoded integer value in hex format
1439	*/
1440	private static function _ber_encode_int($offset)
1441	{
1442	$val = dechex($offset);
1443	$prefix = '';
1444
1445	// check if bit 8 of high byte is 1
1446	if (preg_match('/^[89abcdef]/', $val))
1447	$prefix = '00';
1448
1449	if (strlen($val)%2 != 0)
1450	$prefix .= '0';
1451
1452	return $prefix . $val;
1453	}
1454
1455	/**
1456	* Returns ascii string encoded in hex
1457	*/
1458	private static function _string2hex($str) {
1459	$hex = '';
1460	for ($i=0; $i < strlen($str); $i++)
1461	$hex .= dechex(ord($str[$i]));
1462	return $hex;
1463	}
1464
1465	}

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