1 <?php
2 /*
3 * This code is part of GOsa (http://www.gosa-project.org)
4 * Copyright (C) 2003-2008 GONICUS GmbH
5 *
6 * ID: $$Id$$
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
23 class userinfo
24 {
25 var $dn;
26 var $ip;
27 var $username;
28 var $cn;
29 var $uid;
30 var $gidNumber= -1;
31 var $language= "";
32 var $config;
33 var $gosaUnitTag= "";
34 var $subtreeACL= array();
35 var $ACL= array();
36 var $ocMapping= array();
37 var $groups= array();
38 var $result_cache =array();
39 var $ignoreACl = FALSE;
41 /* get acl's an put them into the userinfo object
42 attr subtreeACL (userdn:components, userdn:component1#sub1#sub2,component2,...) */
43 function userinfo(&$config, $userdn){
44 $this->config= &$config;
45 $ldap= $this->config->get_ldap_link();
46 $ldap->cat($userdn,array('sn', 'givenName', 'uid', 'gidNumber', 'preferredLanguage', 'gosaUnitTag'));
47 $attrs= $ldap->fetch();
49 if (isset($attrs['givenName'][0]) && isset($attrs['sn'][0])){
50 $this->cn= $attrs['givenName'][0]." ".$attrs['sn'][0];
51 } else {
52 $this->cn= $attrs['uid'][0];
53 }
54 if (isset($attrs['gidNumber'][0])){
55 $this->gidNumber= $attrs['gidNumber'][0];
56 }
58 /* Assign user language */
59 if (isset($attrs['preferredLanguage'][0])){
60 $this->language= $attrs['preferredLanguage'][0];
61 }
63 if (isset($attrs['gosaUnitTag'][0])){
64 $this->gosaUnitTag= $attrs['gosaUnitTag'][0];
65 }
67 $this->dn= $userdn;
68 $this->uid= $attrs['uid'][0];
69 $this->ip= $_SERVER['REMOTE_ADDR'];
71 $this->ignoreACL = ($this->config->get_cfg_value("ignoreAcl") == $this->dn);
73 /* Initialize ACL_CACHE */
74 session::set('ACL_CACHE',array());
75 $this->reset_acl_cache();
76 }
79 public function reset_acl_cache()
80 {
81 /* Initialize ACL_CACHE */
82 session::set('ACL_CACHE',array());
83 }
85 function loadACL()
86 {
87 $this->ACL= array();
88 $this->groups= array();
89 $this->result_cache =array();
90 $this->reset_acl_cache();
91 $ldap= $this->config->get_ldap_link();
92 $ldap->cd($this->config->current['BASE']);
94 /* Get member groups... */
95 $ldap->search("(&(objectClass=posixGroup)(memberUid=".$this->uid."))", array('dn'));
96 while ($attrs= $ldap->fetch()){
97 $this->groups[$attrs['dn']]= $attrs['dn'];
98 }
100 /* Crawl through ACLs and move relevant to the tree */
101 $ldap->search("(objectClass=gosaACL)", array('dn', 'gosaAclEntry'));
102 $aclp= array();
103 $aclc= array();
104 while ($attrs= $ldap->fetch()){
106 /* Insert links in ACL array */
107 $aclp[$attrs['dn']]= substr_count($attrs['dn'], ',');
108 $aclc[$attrs['dn']]= array();
109 $ol= array();
110 for($i= 0; $i<$attrs['gosaAclEntry']['count']; $i++){
111 $ol= array_merge($ol, @acl::explodeAcl($attrs['gosaAclEntry'][$i]));
112 }
113 $aclc[$attrs['dn']]= $ol;
114 }
116 /* Resolve roles here.
117 */
118 foreach($aclc as $dn => $data){
119 foreach($data as $prio => $aclc_value) {
120 if($aclc_value['type'] == "role"){
122 unset($aclc[$dn][$prio]);
124 $ldap->cat($aclc_value['acl'],array("gosaAclTemplate"));
125 $attrs = $ldap->fetch();
127 if(isset($attrs['gosaAclTemplate'])){
128 for($i= 0; $i<$attrs['gosaAclTemplate']['count']; $i++){
129 $tmp = @acl::explodeAcl($attrs['gosaAclTemplate'][$i]);
131 foreach($tmp as $new_acl){
133 /* Keep non role attributes here! */
134 $new_acl['filter'] = $aclc_value['filter'];
135 $new_acl['members'] = $aclc_value['members'];
136 $aclc[$dn][] =$new_acl;
137 }
138 }
139 }
140 }
141 }
142 }
144 /* ACL's read, sort for tree depth */
145 asort($aclp);
147 /* Sort in tree order */
148 foreach ($aclp as $dn => $acl){
149 /* Check if we need to keep this ACL */
150 foreach($aclc[$dn] as $idx => $type){
151 $interresting= FALSE;
153 /* No members? This is good for all users... */
154 if (!count($type['members'])){
155 $interresting= TRUE;
156 } else {
158 /* Inspect members... */
159 foreach ($type['members'] as $grp => $grpdsc){
160 /* Some group inside the members that is relevant for us? */
161 if (in_array_ics(preg_replace('/^G:/', '', $grp), $this->groups)){
162 $interresting= TRUE;
163 }
165 /* User inside the members? */
166 if (preg_replace('/^U:/', '', $grp) == $this->dn){
167 $interresting= TRUE;
168 }
169 }
170 }
172 if ($interresting){
173 if (!isset($this->ACL[$dn])){
174 $this->ACL[$dn]= array();
175 }
176 $this->ACL[$dn][$idx]= $type;
177 }
178 }
180 }
181 }
184 function get_category_permissions($dn, $category, $any_acl = FALSE)
185 {
186 /* If we are forced to skip ACLs checks for the current user
187 then return all permissions.
188 */
189 if($this->ignore_acl_for_current_user()){
190 return("rwcdm");
191 }
193 /* Get list of objectClasses and get the permissions for it */
194 $acl= "";
195 if (isset($this->ocMapping[$category])){
196 foreach($this->ocMapping[$category] as $oc){
197 $acl.= $this->get_permissions($dn, $category."/".$oc);
198 if($any_acl && !empty($acl)) return($acl);
199 }
200 }else{
201 trigger_error("ACL request for an invalid category (".$category.").");
202 }
204 return ($acl);
205 }
208 /*! \brief Check if the given object (dn) is copyable
209 @param String The object dn
210 @param String The acl category (e.g. users)
211 @param String The acl class (e.g. user)
212 @return Boolean TRUE if the given object is copyable else FALSE
213 */
214 function is_copyable($dn, $object, $class)
215 {
216 return(preg_match("/r/",$this->has_complete_category_acls($dn, $object)));
217 }
220 /*! \brief Check if the given object (dn) is cutable
221 @param String The object dn
222 @param String The acl category (e.g. users)
223 @param String The acl class (e.g. user)
224 @return Boolean TRUE if the given object is cutable else FALSE
225 */
226 function is_cutable($dn, $object, $class)
227 {
228 $remove = preg_match("/d/",$this->get_permissions($dn,$object."/".$class));
229 $read = preg_match("/r/",$this->has_complete_category_acls($dn, $object));
230 return($remove && $read);
231 }
234 /*! \brief Checks if we are allowed to paste an object to the given destination ($dn)
235 @param String The destination dn
236 @param String The acl category (e.g. users)
237 @param String The acl class (e.g. user)
238 @return Boolean TRUE if we are allowed to paste an object.
239 */
240 function is_pasteable($dn, $object)
241 {
242 return(preg_match("/w/",$this->has_complete_category_acls($dn, $object)));
243 }
246 /*! \brief Checks if we are allowed to restore a snapshot for the given dn.
247 @param String The destination dn
248 @param String The acl category (e.g. users)
249 @return Boolean TRUE if we are allowed to restore a snapshot.
250 */
251 function allow_snapshot_restore($dn, $object)
252 {
253 if(!is_array($object)){
254 $object = array($object);
255 }
256 $r = $w = $c = TRUE;
257 foreach($object as $category){
258 $w &= preg_match("/w/",$this->has_complete_category_acls($dn, $category));
259 $c &= preg_match("/c/",$this->has_complete_category_acls($dn, $category));
260 $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
261 # print_a(array($category => array($r.$w.$c)));
262 }
263 return($r && $w );
264 }
267 /*! \brief Checks if we are allowed to create a snapshot of the given dn.
268 @param String The source dn
269 @param String The acl category (e.g. users)
270 @return Boolean TRUE if we are allowed to restore a snapshot.
271 */
272 function allow_snapshot_create($dn, $object)
273 {
274 if(!is_array($object)){
275 $object = array($object);
276 }
277 $r = $w = $c = TRUE;
278 foreach($object as $category){
279 $w &= preg_match("/w/",$this->has_complete_category_acls($dn, $category));
280 $c &= preg_match("/c/",$this->has_complete_category_acls($dn, $category));
281 $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
282 # print_a(array($category => array($r.$w.$c)));
283 }
284 return($r) ;
285 }
288 function get_permissions($dn, $object, $attribute= "", $skip_write= FALSE)
289 {
290 /* If we are forced to skip ACLs checks for the current user
291 then return all permissions.
292 */
293 if($this->ignore_acl_for_current_user()){
294 if($skip_write){
295 return("rcdm");
296 }
297 return("rwcdm");
298 }
300 /* Push cache answer? */
301 $ACL_CACHE = &session::get('ACL_CACHE');
302 if (isset($ACL_CACHE["$dn+$object+$attribute"])){
304 /* Remove write if needed */
305 if ($skip_write){
306 $ret = preg_replace('/w/', '', $ACL_CACHE["$dn+$object+$attribute"]);
307 }else{
308 $ret = $ACL_CACHE["$dn+$object+$attribute"];
309 }
310 return($ret);
311 }
313 /* Get ldap object, for later filter checks
314 */
315 $ldap = $this->config->get_ldap_link();
317 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
319 /* Build dn array */
320 $path= split(',', $dn);
321 $path= array_reverse($path);
323 /* Walk along the path to evaluate the acl */
324 $cpath= "";
325 foreach ($path as $element){
327 /* Clean potential ACLs for each level */
328 if(isset($this->config->idepartments[$cpath])){
329 $acl= $this->cleanACL($acl);
330 }
332 if ($cpath == ""){
333 $cpath= $element;
334 } else {
335 $cpath= $element.','.$cpath;
336 }
338 if (isset($this->ACL[$cpath])){
340 /* Inspect this ACL, place the result into ACL */
341 foreach ($this->ACL[$cpath] as $subacl){
343 /* Reset? Just clean the ACL and turn over to the next one... */
344 if ($subacl['type'] == 'reset'){
345 $acl= $this->cleanACL($acl, TRUE);
346 continue;
347 }
349 if($subacl['type'] == "role") {
350 echo "role skipped";
351 continue;
352 }
354 /* With user filter */
355 if (isset($subacl['filter']) && !empty($subacl['filter'])){
356 $id = $dn."-".$subacl['filter'];
357 if(!isset($ACL_CACHE[$id])){
358 $ACL_CACHE[$id] = $ldap->object_match_filter($dn,$subacl['filter']);
359 }elseif(!$ACL_CACHE[$id]){
360 continue;
361 }
362 }
364 /* Self ACLs?
365 */
366 if(isset($subacl['acl'][$object][0]) && preg_match("/s/",$subacl['acl'][$object][0]) && $dn != $this->dn){
367 continue;
368 }
370 /* If attribute is "", we want to know, if we've *any* permissions here...
371 Merge global class ACLs [0] with attributes specific ACLs [attribute].
372 */
373 if ($attribute == "" && isset($subacl['acl'][$object])){
374 foreach($subacl['acl'][$object] as $attr => $dummy){
375 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
376 }
377 continue;
378 }
380 /* Per attribute ACL? */
381 if (isset($subacl['acl'][$object][$attribute])){
382 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attribute]);
383 continue;
384 }
386 /* Per object ACL? */
387 if (isset($subacl['acl'][$object][0])){
388 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][0]);
389 continue;
390 }
392 /* Global ACL? */
393 if (isset($subacl['acl']['all'][0])){
394 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']['all'][0]);
395 continue;
396 }
397 }
398 }
399 }
401 /* If the requested ACL is for a container object, then alter
402 ACLs by applying cleanACL a last time.
403 */
404 if(isset($this->config->idepartments[$dn])){
405 $acl = $this->cleanACL($acl);
406 }
408 /* Assemble string */
409 $ret= "";
410 foreach ($acl as $key => $value){
411 if ($value !== ""){
412 $ret.= $key;
413 }
414 }
416 $ACL_CACHE["$dn+$object+$attribute"]= $ret;
418 /* Remove write if needed */
419 if ($skip_write){
420 $ret= preg_replace('/w/', '', $ret);
421 }
422 return ($ret);
423 }
426 /* Extract all departments that are accessible (direct or 'on the way' to an
427 accessible department) */
428 function get_module_departments($module, $skip_self_acls = FALSE )
429 {
430 /* If we are forced to skip ACLs checks for the current user
431 then return all departments as valid.
432 */
433 if($this->ignore_acl_for_current_user()){
434 return(array_keys($this->config->idepartments));
435 }
437 /* Use cached results if possilbe */
438 $ACL_CACHE = session::get('ACL_CACHE');
440 if(!is_array($module)){
441 $module = array($module);
442 }
444 global $plist;
445 $res = array();
446 foreach($module as $mod){
447 if(isset($ACL_CACHE['MODULE_DEPARTMENTS'][$mod])){
448 $res = array_merge($res,$ACL_CACHE['MODULE_DEPARTMENTS'][$mod]);
449 continue;
450 }
452 $deps = array();
454 /* Search for per object ACLs */
455 foreach($this->ACL as $dn => $infos){
456 foreach($infos as $info){
457 $found = FALSE;
458 foreach($info['acl'] as $cat => $data){
460 /* Skip self acls? */
461 if($skip_self_acls && isset($data['0']) && strpos($data['0'], "s")) continue;
462 if(preg_match("/^".normalizePreg($mod)."/",$cat)){
463 $found =TRUE;
464 break;
465 }
466 }
468 if($found && !isset($this->config->idepartments[$dn])){
469 while(!isset($this->config->idepartments[$dn]) && strpos($dn, ",")){
470 $dn = preg_replace("/^[^,]+,/","",$dn);
471 }
472 if(isset($this->config->idepartments[$dn])){
473 $deps[] = $dn;
474 }
475 }
476 }
477 }
479 /* For all gosaDepartments */
480 foreach ($this->config->departments as $dn){
481 if(in_array($dn,$deps)) continue;
482 $acl = "";
483 if(strpos($mod, '/')){
484 $acl.= $this->get_permissions($dn,$mod);
485 }else{
486 $acl.= $this->get_category_permissions($dn,$mod,TRUE);
487 }
488 if(!empty($acl)) {
489 $deps[] = $dn;
490 }
491 }
493 $ACL_CACHE['MODULE_DEPARTMENTS'][$mod] = $deps;
494 session::set('ACL_CACHE',$ACL_CACHE);
496 $res = array_merge($res,$deps);
497 }
498 return ($res);
499 }
502 function mergeACL($acl, $type, $newACL)
503 {
504 $at= array("psub" => "p", "sub" => "s", "one" => "1");
506 if (strpos($newACL, 'w') !== FALSE && strpos($newACL, 'r') === FALSE){
507 $newACL .= "r";
508 }
510 /* Ignore invalid characters */
511 $newACL= preg_replace('/[^rwcdm]/', '', $newACL);
513 foreach(str_split($newACL) as $char){
515 /* Skip permanent and subtree entries */
516 if (preg_match('/[sp]/', $acl[$char])){
517 continue;
518 }
520 if ($type == "base" && $acl[$char] != 1) {
521 $acl[$char]= 0;
522 } else {
523 $acl[$char]= $at[$type];
524 }
525 }
527 return ($acl);
528 }
531 function cleanACL($acl, $reset= FALSE)
532 {
533 foreach ($acl as $key => $value){
535 /* Continue, if value is empty or permanent */
536 if ($value == "" || $value == "p") {
537 continue;
538 }
540 /* Reset removes everything but 'p' */
541 if ($reset && $value != 'p'){
542 $acl[$key]= "";
543 continue;
544 }
546 /* Decrease tree level */
547 if (is_int($value)){
548 if ($value){
549 $acl[$key]--;
550 } else {
551 $acl[$key]= "";
552 }
553 }
554 }
556 return ($acl);
557 }
560 /* #FIXME This could be logical wrong or could be optimized in the future
561 Return combined acls for a given category.
562 All acls will be combined like boolean AND
563 As example ('rwcdm' + 'rcd' + 'wrm'= 'r')
565 Results will be cached in $this->result_cache.
566 $this->result_cache will be resetted if load_acls is called.
567 */
568 function has_complete_category_acls($dn,$category)
569 {
570 $acl = "rwcdm";
571 $types = "rwcdm";
573 if(!is_string($category)){
574 trigger_error("category must be string");
575 $acl = "";
576 }else{
577 if(!isset($this->result_cache['has_complete_category_acls'][$dn][$category])) {
578 if (isset($this->ocMapping[$category])){
579 foreach($this->ocMapping[$category] as $oc){
581 /* Skip objectClass '0' (e.g. users/0) get_permissions will ever return '' ?? */
582 if($oc == "0") continue;
583 $tmp = $this->get_permissions($dn, $category."/".$oc);
584 for($i = 0 ; $i < strlen($types); $i++) {
585 if(!preg_match("/".$types[$i]."/",$tmp)){
586 $acl = preg_replace("/".$types[$i]."/","",$acl);
587 }
588 }
589 }
590 }else{
591 trigger_error("Invalid type of category ".$category);
592 $acl = "";
593 }
594 $this->result_cache['has_complete_category_acls'][$dn][$category] = $acl;
595 }else{
596 $acl = $this->result_cache['has_complete_category_acls'][$dn][$category];
597 }
598 }
599 return($acl);
600 }
603 /*! \brief Returns TRUE if the current user is configured in IGNORE_ACL=".." in your gosa.conf
604 @param Return Boolean TRUE if we have to skip ACL checks else FALSE.
605 */
606 function ignore_acl_for_current_user()
607 {
608 return($this->ignoreACL);
609 }
611 }
613 // vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
614 ?>