47c0317050cfd64c7abb0b891d461f972701d7a8
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 $result_cache =array();
40 /* get acl's an put them into the userinfo object
41 attr subtreeACL (userdn:components, userdn:component1#sub1#sub2,component2,...) */
42 function userinfo(&$config, $userdn){
43 $this->config= &$config;
44 $ldap= $this->config->get_ldap_link();
45 $ldap->cat($userdn,array('sn', 'givenName', 'uid', 'gidNumber', 'preferredLanguage', 'gosaUnitTag'));
46 $attrs= $ldap->fetch();
48 if (isset($attrs['givenName'][0]) && isset($attrs['sn'][0])){
49 $this->cn= $attrs['givenName'][0]." ".$attrs['sn'][0];
50 } else {
51 $this->cn= $attrs['uid'][0];
52 }
53 if (isset($attrs['gidNumber'][0])){
54 $this->gidNumber= $attrs['gidNumber'][0];
55 }
57 /* Assign user language */
58 if (isset($attrs['preferredLanguage'][0])){
59 $this->language= $attrs['preferredLanguage'][0];
60 }
62 if (isset($attrs['gosaUnitTag'][0])){
63 $this->gosaUnitTag= $attrs['gosaUnitTag'][0];
64 }
66 $this->dn= $userdn;
67 $this->uid= $attrs['uid'][0];
68 $this->ip= $_SERVER['REMOTE_ADDR'];
70 /* Initialize ACL_CACHE */
71 session::set('ACL_CACHE',array());
72 $this->reset_acl_cache();
73 }
76 public function reset_acl_cache()
77 {
78 /* Initialize ACL_CACHE */
79 session::set('ACL_CACHE',array());
80 }
82 function loadACL()
83 {
84 $this->ACL= array();
85 $this->groups= array();
86 $this->result_cache =array();
87 $this->reset_acl_cache();
88 $ldap= $this->config->get_ldap_link();
89 $ldap->cd($this->config->current['BASE']);
91 /* Get member groups... */
92 $ldap->search("(&(objectClass=posixGroup)(memberUid=".$this->uid."))", array('dn'));
93 while ($attrs= $ldap->fetch()){
94 $this->groups[$attrs['dn']]= $attrs['dn'];
95 }
97 /* Crawl through ACLs and move relevant to the tree */
98 $ldap->search("(objectClass=gosaACL)", array('dn', 'gosaAclEntry'));
99 $aclp= array();
100 $aclc= array();
101 while ($attrs= $ldap->fetch()){
103 /* Insert links in ACL array */
104 $aclp[$attrs['dn']]= substr_count($attrs['dn'], ',');
105 $aclc[$attrs['dn']]= array();
106 $ol= array();
107 for($i= 0; $i<$attrs['gosaAclEntry']['count']; $i++){
108 $ol= array_merge($ol, @acl::explodeAcl($attrs['gosaAclEntry'][$i]));
109 }
110 $aclc[$attrs['dn']]= $ol;
111 }
113 /* Resolve roles here.
114 */
115 foreach($aclc as $dn => $data){
116 foreach($data as $prio => $aclc_value) {
117 if($aclc_value['type'] == "role"){
119 unset($aclc[$dn][$prio]);
121 $ldap->cat($aclc_value['acl'],array("gosaAclTemplate"));
122 $attrs = $ldap->fetch();
124 if(isset($attrs['gosaAclTemplate'])){
125 for($i= 0; $i<$attrs['gosaAclTemplate']['count']; $i++){
126 $tmp = @acl::explodeAcl($attrs['gosaAclTemplate'][$i]);
128 foreach($tmp as $new_acl){
129 $new_acl['members'] = $aclc_value['members'];
130 $aclc[$dn][] =$new_acl;
131 }
132 }
133 }
134 }
135 }
136 }
138 /* ACL's read, sort for tree depth */
139 asort($aclp);
141 /* Sort in tree order */
142 foreach ($aclp as $dn => $acl){
143 /* Check if we need to keep this ACL */
144 foreach($aclc[$dn] as $idx => $type){
145 $interresting= FALSE;
147 /* No members? This is good for all users... */
148 if (!count($type['members'])){
149 $interresting= TRUE;
150 } else {
152 /* Inspect members... */
153 foreach ($type['members'] as $grp => $grpdsc){
154 /* Some group inside the members that is relevant for us? */
155 if (in_array_ics(preg_replace('/^G:/', '', $grp), $this->groups)){
156 $interresting= TRUE;
157 }
159 /* User inside the members? */
160 if (preg_replace('/^U:/', '', $grp) == $this->dn){
161 $interresting= TRUE;
162 }
163 }
164 }
166 if ($interresting){
167 if (!isset($this->ACL[$dn])){
168 $this->ACL[$dn]= array();
169 }
170 $this->ACL[$dn][$idx]= $type;
171 }
172 }
174 }
175 }
178 function get_category_permissions($dn, $category)
179 {
180 /* If we are forced to skip ACLs checks for the current user
181 then return all permissions.
182 */
183 if($this->ignore_acl_for_current_user()){
184 return("rwcdm");
185 }
187 /* Get list of objectClasses and get the permissions for it */
188 $acl= "";
189 if (isset($this->ocMapping[$category])){
190 foreach($this->ocMapping[$category] as $oc){
191 $acl.= $this->get_permissions($dn, $category."/".$oc);
192 }
193 }else{
194 trigger_error("ACL request for an invalid category (".$category.").");
195 }
197 return ($acl);
198 }
201 /*! \brief Check if the given object (dn) is copyable
202 @param String The object dn
203 @param String The acl category (e.g. users)
204 @param String The acl class (e.g. user)
205 @return Boolean TRUE if the given object is copyable else FALSE
206 */
207 function is_copyable($dn, $object, $class)
208 {
209 return(preg_match("/r/",$this->has_complete_category_acls($dn, $object)));
210 }
213 /*! \brief Check if the given object (dn) is cutable
214 @param String The object dn
215 @param String The acl category (e.g. users)
216 @param String The acl class (e.g. user)
217 @return Boolean TRUE if the given object is cutable else FALSE
218 */
219 function is_cutable($dn, $object, $class)
220 {
221 $remove = preg_match("/d/",$this->get_permissions($dn,$object."/".$class));
222 $read = preg_match("/r/",$this->has_complete_category_acls($dn, $object));
223 return($remove && $read);
224 }
227 /*! \brief Checks if we are allowed to paste an object to the given destination ($dn)
228 @param String The destination dn
229 @param String The acl category (e.g. users)
230 @param String The acl class (e.g. user)
231 @return Boolean TRUE if we are allowed to paste an object.
232 */
233 function is_pasteable($dn, $object)
234 {
235 return(preg_match("/w/",$this->has_complete_category_acls($dn, $object)));
236 }
239 /*! \brief Checks if we are allowed to restore a snapshot for the given dn.
240 @param String The destination dn
241 @param String The acl category (e.g. users)
242 @return Boolean TRUE if we are allowed to restore a snapshot.
243 */
244 function allow_snapshot_restore($dn, $object)
245 {
246 if(!is_array($object)){
247 $object = array($object);
248 }
249 $r = $w = $c = TRUE;
250 foreach($object as $category){
251 $w &= preg_match("/w/",$this->has_complete_category_acls($dn, $category));
252 $c &= preg_match("/c/",$this->has_complete_category_acls($dn, $category));
253 $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
254 # print_a(array($category => array($r.$w.$c)));
255 }
256 return($r && $w );
257 }
260 /*! \brief Checks if we are allowed to create a snapshot of the given dn.
261 @param String The source dn
262 @param String The acl category (e.g. users)
263 @return Boolean TRUE if we are allowed to restore a snapshot.
264 */
265 function allow_snapshot_create($dn, $object)
266 {
267 if(!is_array($object)){
268 $object = array($object);
269 }
270 $r = $w = $c = TRUE;
271 foreach($object as $category){
272 $w &= preg_match("/w/",$this->has_complete_category_acls($dn, $category));
273 $c &= preg_match("/c/",$this->has_complete_category_acls($dn, $category));
274 $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
275 # print_a(array($category => array($r.$w.$c)));
276 }
277 return($r) ;
278 }
281 function get_permissions($dn, $object, $attribute= "", $skip_write= FALSE)
282 {
283 /* If we are forced to skip ACLs checks for the current user
284 then return all permissions.
285 */
286 if($this->ignore_acl_for_current_user()){
287 if($skip_write){
288 return("rcdm");
289 }
290 return("rwcdm");
291 }
293 /* Push cache answer? */
294 $ACL_CACHE = &session::get('ACL_CACHE');
295 if (isset($ACL_CACHE["$dn+$object+$attribute"])){
297 /* Remove write if needed */
298 if ($skip_write){
299 $ret = preg_replace('/w/', '', $ACL_CACHE["$dn+$object+$attribute"]);
300 }else{
301 $ret = $ACL_CACHE["$dn+$object+$attribute"];
302 }
303 return($ret);
304 }
306 /* Get ldap object, for later filter checks
307 */
308 $ldap = $this->config->get_ldap_link();
310 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
312 /* Build dn array */
313 $path= split(',', $dn);
314 $path= array_reverse($path);
316 /* Walk along the path to evaluate the acl */
317 $cpath= "";
318 foreach ($path as $element){
320 /* Clean potential ACLs for each level */
321 if(in_array($cpath,$this->config->departments)){
322 $acl= $this->cleanACL($acl);
323 }
325 if ($cpath == ""){
326 $cpath= $element;
327 } else {
328 $cpath= $element.','.$cpath;
329 }
331 if (isset($this->ACL[$cpath])){
333 /* Inspect this ACL, place the result into ACL */
334 foreach ($this->ACL[$cpath] as $subacl){
336 /* Reset? Just clean the ACL and turn over to the next one... */
337 if ($subacl['type'] == 'reset'){
338 $acl= $this->cleanACL($acl, TRUE);
339 continue;
340 }
342 if($subacl['type'] == "role") {
343 echo "role skipped";
344 continue;
345 }
347 /* With user filter */
348 if (isset($subacl['filter']) && !empty($subacl['filter'])){
349 $sdn = preg_replace("/^[^,]*+,/","",$dn);
350 $ldap->cd($sdn);
351 $ldap->ls($subacl['filter'],$sdn);
352 if(!$ldap->count()){
353 continue;
354 }else{
355 $found = FALSE;
356 while($attrs = $ldap->fetch()){
357 if($attrs['dn'] == $dn){
358 $found = TRUE;
359 break;
360 }
361 }
362 if(!$found){
363 continue;
364 }
365 }
366 }
368 /* Self ACLs?
369 */
370 if(isset($subacl['acl'][$object][0]) && preg_match("/s/",$subacl['acl'][$object][0]) && $dn != $this->dn){
371 continue;
372 }
374 /* If attribute is "", we want to know, if we've *any* permissions here...
375 Merge global class ACLs [0] with attributes specific ACLs [attribute].
376 */
377 if ($attribute == "" && isset($subacl['acl'][$object])){
378 foreach($subacl['acl'][$object] as $attr => $dummy){
379 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
380 }
381 continue;
382 }
384 /* Per attribute ACL? */
385 if (isset($subacl['acl'][$object][$attribute])){
386 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attribute]);
387 continue;
388 }
390 /* Per object ACL? */
391 if (isset($subacl['acl'][$object][0])){
392 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][0]);
393 continue;
394 }
396 /* Global ACL? */
397 if (isset($subacl['acl']['all'][0])){
398 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']['all'][0]);
399 continue;
400 }
401 }
402 }
403 }
405 /* If the requested ACL is for a container object, then alter
406 ACLs by applying cleanACL a last time.
407 */
408 if(in_array($dn,$this->config->departments)){
409 $acl = $this->cleanACL($acl);
410 }
412 /* Assemble string */
413 $ret= "";
414 foreach ($acl as $key => $value){
415 if ($value !== ""){
416 $ret.= $key;
417 }
418 }
420 $ACL_CACHE["$dn+$object+$attribute"]= $ret;
422 /* Remove write if needed */
423 if ($skip_write){
424 $ret= preg_replace('/w/', '', $ret);
425 }
426 return ($ret);
427 }
430 /* Extract all departments that are accessible (direct or 'on the way' to an
431 accessible department) */
432 function get_module_departments($module, $skip_self_acls = FALSE )
433 {
435 /* If we are forced to skip ACLs checks for the current user
436 then return all departments as valid.
437 */
438 if($this->ignore_acl_for_current_user()){
439 return(array_keys($this->config->idepartments));
440 }
442 /* Use cached results if possilbe */
443 $ACL_CACHE = session::get('ACL_CACHE');
444 if(isset($ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)])){
445 return($ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)]);
446 }
448 global $plist;
450 $objects= array();
451 $deps= array();
453 /* Extract all relevant objects for this module from plist */
454 foreach ($plist->info as $object => $info){
455 if (!isset($info['plCategory'])){
456 continue;
457 }
458 foreach ($info['plCategory'] as $idx => $data){
459 if (preg_match('/^[0-9]+$/', $idx)){
460 if ($data == $module){
461 $objects[$object]= $object;
462 }
463 } else {
464 if ($idx == $module){
465 $objects[$object]= $object;
466 }
467 }
468 }
469 }
471 /* Search for per object ACLs.
472 */
473 $this->config->get_departments();
474 $this->config->make_idepartments();
476 foreach($this->ACL as $dn => $infos){
477 foreach($infos as $info){
478 $found = FALSE;
479 foreach($info['acl'] as $cat => $data){
481 /* Skip self acls? */
482 if($skip_self_acls && isset($data['0']) && preg_match("//s",$data['0'])) continue;
484 if(is_array($module)){
485 foreach($module as $mod){
486 if(preg_match("/^".normalizePreg($mod)."/",$cat)){
487 $found =TRUE;
488 break;
489 }
490 }
491 }else{
492 if(preg_match("/^".normalizePreg($module)."/",$cat)){
493 $found =TRUE;
494 break;
495 }
496 }
497 }
499 if($found && !isset($this->config->idepartments[$dn])){
500 while(!isset($this->config->idepartments[$dn]) && preg_match("/,/",$dn)){
501 $dn = preg_replace("/^[^,]+,/","",$dn);
502 }
503 if(isset($this->config->idepartments[$dn])){
504 $deps[] = $dn;
505 }
506 }
507 }
508 }
510 /* For all gosaDepartments */
511 foreach ($this->config->departments as $dn){
512 if(!is_array($module)){
513 $module = array($module);
514 }
515 $acl = "";
516 foreach($module as $mod){
517 if(preg_match("/\//",$mod)){
518 $acl.= $this->get_permissions($dn,$mod);
519 }else{
520 $acl.= $this->get_category_permissions($dn,$mod);
521 }
522 }
523 if($acl !== "") $deps[] = $dn;
524 }
526 $ACL_CACHE = &session::get('ACL_CACHE');
527 $ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)] = $deps;
528 return ($deps);
529 }
532 function mergeACL($acl, $type, $newACL)
533 {
534 if (strpos($newACL, 'w') !== FALSE && strpos($newACL, 'r') === FALSE){
535 $newACL .= "r";
536 }
538 foreach(str_split($newACL) as $char){
540 /* Ignore invalid characters */
541 if (!preg_match('/[rwcdm]/', $char)){
542 continue;
543 }
545 /* Skip permanent and subtree entries */
546 if (preg_match('/[sp]/', $acl[$char])){
547 continue;
548 }
550 switch ($type){
551 case 'psub':
552 $acl[$char]= 'p';
553 break;
555 case 'sub':
556 $acl[$char]= 's';
557 break;
559 case 'one':
560 $acl[$char]= 1;
561 break;
563 case 'base':
564 if ($acl[$char] != 1){
565 $acl[$char]= 0;
566 }
567 break;
568 }
569 }
571 return ($acl);
572 }
575 function cleanACL($acl, $reset= FALSE)
576 {
577 foreach ($acl as &$value){
579 /* Reset removes everything but 'p' */
580 if ($reset && $value != 'p'){
581 $value= "";
582 continue;
583 }
585 /* Decrease tree level */
586 if (is_int($value)){
587 if ($value){
588 $value--;
589 } else {
590 $value= "";
591 }
592 }
593 }
595 return ($acl);
596 }
599 /* #FIXME This could be logical wrong or could be optimized in the future
600 Return combined acls for a given category.
601 All acls will be combined like boolean AND
602 As example ('rwcdm' + 'rcd' + 'wrm'= 'r')
604 Results will be cached in $this->result_cache.
605 $this->result_cache will be resetted if load_acls is called.
606 */
607 function has_complete_category_acls($dn,$category)
608 {
609 $acl = "rwcdm";
610 $types = "rwcdm";
612 if(!is_string($category)){
613 trigger_error("category must be string");
614 $acl = "";
615 }else{
616 if(!isset($this->result_cache['has_complete_category_acls'][$dn][$category])) {
617 if (isset($this->ocMapping[$category])){
618 foreach($this->ocMapping[$category] as $oc){
620 /* Skip objectClass '0' (e.g. users/0) get_permissions will ever return '' ?? */
621 if($oc == "0") continue;
622 $tmp = $this->get_permissions($dn, $category."/".$oc);
623 for($i = 0 ; $i < strlen($types); $i++) {
624 if(!preg_match("/".$types[$i]."/",$tmp)){
625 $acl = preg_replace("/".$types[$i]."/","",$acl);
626 }
627 }
628 }
629 }else{
630 trigger_error("Invalid type of category ".$category);
631 $acl = "";
632 }
633 $this->result_cache['has_complete_category_acls'][$dn][$category] = $acl;
634 }else{
635 $acl = $this->result_cache['has_complete_category_acls'][$dn][$category];
636 }
637 }
638 return($acl);
639 }
642 /*! \brief Returns TRUE if the current user is configured in IGNORE_ACL=".." in your gosa.conf
643 @param Return Boolean TRUE if we have to skip ACL checks else FALSE.
644 */
645 function ignore_acl_for_current_user()
646 {
647 return(isset($this->config->current['IGNORE_ACL']) && $this->config->current['IGNORE_ACL'] == $this->dn);
648 }
650 }
652 // vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
653 ?>