7e2023a27ae2f2264f4aca0038d534f0ad5d4fad
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 $this->reset_acl_cache();
75 }
78 public function reset_acl_cache()
79 {
80 /* Initialize ACL_CACHE */
81 session::set('ACL_CACHE',array());
82 }
84 function loadACL()
85 {
86 $this->ACL= array();
87 $this->groups= array();
88 $this->result_cache =array();
89 $this->reset_acl_cache();
90 $ldap= $this->config->get_ldap_link();
91 $ldap->cd($this->config->current['BASE']);
93 /* Get member groups... */
94 $ldap->search("(&(objectClass=posixGroup)(memberUid=".$this->uid."))", array('dn'));
95 while ($attrs= $ldap->fetch()){
96 $this->groups[$attrs['dn']]= $attrs['dn'];
97 }
99 /* Crawl through ACLs and move relevant to the tree */
100 $ldap->search("(objectClass=gosaACL)", array('dn', 'gosaAclEntry'));
101 $aclp= array();
102 $aclc= array();
103 while ($attrs= $ldap->fetch()){
105 /* Insert links in ACL array */
106 $aclp[$attrs['dn']]= substr_count($attrs['dn'], ',');
107 $aclc[$attrs['dn']]= array();
108 $ol= array();
109 for($i= 0; $i<$attrs['gosaAclEntry']['count']; $i++){
110 $ol= array_merge($ol, @acl::explodeAcl($attrs['gosaAclEntry'][$i]));
111 }
112 $aclc[$attrs['dn']]= $ol;
113 }
115 /* Resolve roles here.
116 */
117 foreach($aclc as $dn => $data){
118 foreach($data as $prio => $aclc_value) {
119 if($aclc_value['type'] == "role"){
121 unset($aclc[$dn][$prio]);
123 $ldap->cat($aclc_value['acl'],array("gosaAclTemplate"));
124 $attrs = $ldap->fetch();
126 if(isset($attrs['gosaAclTemplate'])){
127 for($i= 0; $i<$attrs['gosaAclTemplate']['count']; $i++){
128 $tmp = @acl::explodeAcl($attrs['gosaAclTemplate'][$i]);
130 foreach($tmp as $new_acl){
132 /* Keep non role attributes here! */
133 $new_acl['filter'] = $aclc_value['filter'];
134 $new_acl['members'] = $aclc_value['members'];
135 $aclc[$dn][] =$new_acl;
136 }
137 }
138 }
139 }
140 }
141 }
143 /* ACL's read, sort for tree depth */
144 asort($aclp);
146 /* Sort in tree order */
147 foreach ($aclp as $dn => $acl){
148 /* Check if we need to keep this ACL */
149 foreach($aclc[$dn] as $idx => $type){
150 $interresting= FALSE;
152 /* No members? This is good for all users... */
153 if (!count($type['members'])){
154 $interresting= TRUE;
155 } else {
157 /* Inspect members... */
158 foreach ($type['members'] as $grp => $grpdsc){
159 /* Some group inside the members that is relevant for us? */
160 if (in_array_ics(preg_replace('/^G:/', '', $grp), $this->groups)){
161 $interresting= TRUE;
162 }
164 /* User inside the members? */
165 if (preg_replace('/^U:/', '', $grp) == $this->dn){
166 $interresting= TRUE;
167 }
168 }
169 }
171 if ($interresting){
172 if (!isset($this->ACL[$dn])){
173 $this->ACL[$dn]= array();
174 }
175 $this->ACL[$dn][$idx]= $type;
176 }
177 }
179 }
180 }
183 function get_category_permissions($dn, $category, $any_acl = FALSE)
184 {
185 /* If we are forced to skip ACLs checks for the current user
186 then return all permissions.
187 */
188 if($this->ignore_acl_for_current_user()){
189 return("rwcdm");
190 }
192 /* Ensure that we only cache relevant ACL settings
193 */
194 # while(!isset($this->ACL[$dn]) && preg_match("/,/",$dn)){
195 # $dn = preg_replace("/^[^,]*+,/","",$dn);
196 # }
198 $ACL_CACHE = &session::get("ACL_CACHE");
199 $id = $dn."+".$category."+".$any_acl;
200 if(isset($ACL_CACHE['CATEGORY_ACL'][$id])){
201 return($ACL_CACHE['CATEGORY_ACL'][$id]);
202 }
205 /* Get list of objectClasses and get the permissions for it */
206 $acl= "";
207 if (isset($this->ocMapping[$category])){
208 foreach($this->ocMapping[$category] as $oc){
209 $acl.= $this->get_permissions($dn, $category."/".$oc);
210 if($any_acl && !empty($acl)){
211 break;
212 }
213 }
214 }else{
215 trigger_error("ACL request for an invalid category (".$category.").");
216 }
217 $ACL_CACHE = &session::get("ACL_CACHE");
218 $ACL_CACHE['CATEGORY_ACL'][$id] = $acl;
219 return ($acl);
220 }
223 /*! \brief Check if the given object (dn) is copyable
224 @param String The object dn
225 @param String The acl category (e.g. users)
226 @param String The acl class (e.g. user)
227 @return Boolean TRUE if the given object is copyable else FALSE
228 */
229 function is_copyable($dn, $object, $class)
230 {
231 return(preg_match("/r/",$this->has_complete_category_acls($dn, $object)));
232 }
235 /*! \brief Check if the given object (dn) is cutable
236 @param String The object dn
237 @param String The acl category (e.g. users)
238 @param String The acl class (e.g. user)
239 @return Boolean TRUE if the given object is cutable else FALSE
240 */
241 function is_cutable($dn, $object, $class)
242 {
243 $remove = preg_match("/d/",$this->get_permissions($dn,$object."/".$class));
244 $read = preg_match("/r/",$this->has_complete_category_acls($dn, $object));
245 return($remove && $read);
246 }
249 /*! \brief Checks if we are allowed to paste an object to the given destination ($dn)
250 @param String The destination dn
251 @param String The acl category (e.g. users)
252 @param String The acl class (e.g. user)
253 @return Boolean TRUE if we are allowed to paste an object.
254 */
255 function is_pasteable($dn, $object)
256 {
257 return(preg_match("/w/",$this->has_complete_category_acls($dn, $object)));
258 }
261 /*! \brief Checks if we are allowed to restore a snapshot for the given dn.
262 @param String The destination dn
263 @param String The acl category (e.g. users)
264 @return Boolean TRUE if we are allowed to restore a snapshot.
265 */
266 function allow_snapshot_restore($dn, $object)
267 {
268 if(!is_array($object)){
269 $object = array($object);
270 }
271 $r = $w = TRUE;
272 foreach($object as $category){
273 $w &= preg_match("/w/",$this->has_complete_category_acls($dn, $category));
274 $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
275 }
276 return($r && $w );
277 }
280 /*! \brief Checks if we are allowed to create a snapshot of the given dn.
281 @param String The source dn
282 @param String The acl category (e.g. users)
283 @return Boolean TRUE if we are allowed to restore a snapshot.
284 */
285 function allow_snapshot_create($dn, $object)
286 {
287 if(!is_array($object)){
288 $object = array($object);
289 }
290 $r = TRUE;
291 foreach($object as $category){
292 $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
293 }
294 return($r) ;
295 }
298 function get_permissions($dn, $object, $attribute= "", $skip_write= FALSE)
299 {
300 /* If we are forced to skip ACLs checks for the current user
301 then return all permissions.
302 */
303 if($this->ignore_acl_for_current_user()){
304 if($skip_write){
305 return("rcdm");
306 }
307 return("rwcdm");
308 }
310 /* Ensure that we only cache relevant ACL settings
311 */
312 # while(!isset($this->ACL[$dn]) && preg_match("/,/",$dn)){
313 # $dn = preg_replace("/^[^,]+,/","",$dn);
314 # }
316 /* Push cache answer? */
317 $ACL_CACHE = &session::get('ACL_CACHE');
318 if (isset($ACL_CACHE["$dn+$object+$attribute"])){
320 /* Remove write if needed */
321 if ($skip_write){
322 $ret = preg_replace('/w/', '', $ACL_CACHE["$dn+$object+$attribute"]);
323 }else{
324 $ret = $ACL_CACHE["$dn+$object+$attribute"];
325 }
326 return($ret);
327 }
329 /* Get ldap object, for later filter checks
330 */
331 $ldap = $this->config->get_ldap_link();
333 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
335 /* Build dn array */
336 $path= split(',', $dn);
337 $path= array_reverse($path);
339 /* Walk along the path to evaluate the acl */
340 $cpath= "";
341 foreach ($path as $element){
343 /* Clean potential ACLs for each level */
344 if(isset($this->config->idepartments[$cpath])){
345 $acl= $this->cleanACL($acl);
346 }
348 if ($cpath == ""){
349 $cpath= $element;
350 } else {
351 $cpath= $element.','.$cpath;
352 }
354 if (isset($this->ACL[$cpath])){
356 /* Inspect this ACL, place the result into ACL */
357 foreach ($this->ACL[$cpath] as $subacl){
359 /* Reset? Just clean the ACL and turn over to the next one... */
360 if ($subacl['type'] == 'reset'){
361 $acl= $this->cleanACL($acl, TRUE);
362 continue;
363 }
365 if($subacl['type'] == "role") {
366 echo "role skipped";
367 continue;
368 }
370 /* With user filter */
371 if (isset($subacl['filter']) && !empty($subacl['filter'])){
372 $id = $dn."-".$subacl['filter'];
373 if(!isset($ACL_CACHE['FILTER'][$id])){
374 $ACL_CACHE['FILTER'][$id] = $ldap->object_match_filter($dn,$subacl['filter']);
375 }
376 if(!$ACL_CACHE['FILTER'][$id]){
377 continue;
378 }
379 }
381 /* Self ACLs?
382 */
383 if($dn != $this->dn && isset($subacl['acl'][$object][0]) && strpos($subacl['acl'][$object][0],"s")){
384 continue;
385 }
387 /* If attribute is "", we want to know, if we've *any* permissions here...
388 Merge global class ACLs [0] with attributes specific ACLs [attribute].
389 */
390 if ($attribute == "" && isset($subacl['acl'][$object])){
391 foreach($subacl['acl'][$object] as $attr => $dummy){
392 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
393 }
394 continue;
395 }
397 /* Per attribute ACL? */
398 if (isset($subacl['acl'][$object][$attribute])){
399 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attribute]);
400 continue;
401 }
403 /* Per object ACL? */
404 if (isset($subacl['acl'][$object][0])){
405 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][0]);
406 continue;
407 }
409 /* Global ACL? */
410 if (isset($subacl['acl']['all'][0])){
411 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']['all'][0]);
412 continue;
413 }
414 }
415 }
416 }
418 /* If the requested ACL is for a container object, then alter
419 ACLs by applying cleanACL a last time.
420 */
421 if(isset($this->config->idepartments[$dn])){
422 $acl = $this->cleanACL($acl);
423 }
425 /* Assemble string */
426 $ret= "";
427 foreach ($acl as $key => $value){
428 if ($value !== ""){
429 $ret.= $key;
430 }
431 }
433 $ACL_CACHE["$dn+$object+$attribute"]= $ret;
435 /* Remove write if needed */
436 if ($skip_write){
437 $ret= preg_replace('/w/', '', $ret);
438 }
439 return ($ret);
440 }
443 /* Extract all departments that are accessible (direct or 'on the way' to an
444 accessible department) */
445 function get_module_departments($module, $skip_self_acls = FALSE )
446 {
447 /* If we are forced to skip ACLs checks for the current user
448 then return all departments as valid.
449 */
450 if($this->ignore_acl_for_current_user()){
451 return(array_keys($this->config->idepartments));
452 }
454 /* Use cached results if possilbe */
455 $ACL_CACHE = &session::get('ACL_CACHE');
457 if(!is_array($module)){
458 $module = array($module);
459 }
461 global $plist;
462 $res = array();
463 foreach($module as $mod){
464 if(isset($ACL_CACHE['MODULE_DEPARTMENTS'][$mod])){
465 $res = array_merge($res,$ACL_CACHE['MODULE_DEPARTMENTS'][$mod]);
466 continue;
467 }
469 $deps = array();
471 /* Search for per object ACLs */
472 foreach($this->ACL as $dn => $infos){
473 foreach($infos as $info){
474 $found = FALSE;
475 foreach($info['acl'] as $cat => $data){
477 /* Skip self acls? */
478 if($skip_self_acls && isset($data['0']) && strpos($data['0'], "s")) continue;
479 if(preg_match("/^".normalizePreg($mod)."/",$cat)){
480 $found =TRUE;
481 break;
482 }
483 }
485 if($found && !isset($this->config->idepartments[$dn])){
486 while(!isset($this->config->idepartments[$dn]) && strpos($dn, ",")){
487 $dn = preg_replace("/^[^,]+,/","",$dn);
488 }
489 if(isset($this->config->idepartments[$dn])){
490 $deps[] = $dn;
491 }
492 }
493 }
494 }
496 /* For all gosaDepartments */
497 foreach ($this->config->departments as $dn){
498 if(in_array($dn,$deps)) continue;
499 $acl = "";
500 if(strpos($mod, '/')){
501 $acl.= $this->get_permissions($dn,$mod);
502 }else{
503 $acl.= $this->get_category_permissions($dn,$mod,TRUE);
504 }
505 if(!empty($acl)) {
506 $deps[] = $dn;
507 }
508 }
510 $ACL_CACHE['MODULE_DEPARTMENTS'][$mod] = $deps;
511 $res = array_merge($res,$deps);
512 }
513 return ($res);
514 }
517 function mergeACL($acl, $type, $newACL)
518 {
519 $at= array("psub" => "p", "sub" => "s", "one" => "1");
521 if (strpos($newACL, 'w') !== FALSE && strpos($newACL, 'r') === FALSE){
522 $newACL .= "r";
523 }
525 /* Ignore invalid characters */
526 $newACL= preg_replace('/[^rwcdm]/', '', $newACL);
528 foreach(str_split($newACL) as $char){
530 /* Skip permanent and subtree entries */
531 if (preg_match('/[sp]/', $acl[$char])){
532 continue;
533 }
535 if ($type == "base" && $acl[$char] != 1) {
536 $acl[$char]= 0;
537 } else {
538 $acl[$char]= $at[$type];
539 }
540 }
542 return ($acl);
543 }
546 function cleanACL($acl, $reset= FALSE)
547 {
548 foreach ($acl as $key => $value){
550 /* Continue, if value is empty or permanent */
551 if ($value == "" || $value == "p") {
552 continue;
553 }
555 /* Reset removes everything but 'p' */
556 if ($reset && $value != 'p'){
557 $acl[$key]= "";
558 continue;
559 }
561 /* Decrease tree level */
562 if (is_int($value)){
563 if ($value){
564 $acl[$key]--;
565 } else {
566 $acl[$key]= "";
567 }
568 }
569 }
571 return ($acl);
572 }
575 /* #FIXME This could be logical wrong or could be optimized in the future
576 Return combined acls for a given category.
577 All acls will be combined like boolean AND
578 As example ('rwcdm' + 'rcd' + 'wrm'= 'r')
580 Results will be cached in $this->result_cache.
581 $this->result_cache will be resetted if load_acls is called.
582 */
583 function has_complete_category_acls($dn,$category)
584 {
585 $acl = "rwcdm";
586 $types = "rwcdm";
588 if(!is_string($category)){
589 trigger_error("category must be string");
590 $acl = "";
591 }else{
592 if(!isset($this->result_cache['has_complete_category_acls'][$dn][$category])) {
593 if (isset($this->ocMapping[$category])){
594 foreach($this->ocMapping[$category] as $oc){
596 /* Skip objectClass '0' (e.g. users/0) get_permissions will ever return '' ?? */
597 if($oc == "0") continue;
598 $tmp = $this->get_permissions($dn, $category."/".$oc);
599 for($i = 0, $l= strlen($types); $i < $l; $i++) {
600 if(!preg_match("/".$types[$i]."/",$tmp)){
601 $acl = preg_replace("/".$types[$i]."/","",$acl);
602 }
603 }
604 }
605 }else{
606 trigger_error("Invalid type of category ".$category);
607 $acl = "";
608 }
609 $this->result_cache['has_complete_category_acls'][$dn][$category] = $acl;
610 }else{
611 $acl = $this->result_cache['has_complete_category_acls'][$dn][$category];
612 }
613 }
614 return($acl);
615 }
618 /*! \brief Returns TRUE if the current user is configured in IGNORE_ACL=".." in your gosa.conf
619 @param Return Boolean TRUE if we have to skip ACL checks else FALSE.
620 */
621 function ignore_acl_for_current_user()
622 {
623 return($this->ignoreACL);
624 }
626 }
628 // vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
629 ?>