5f68ac99989044c9f93fe27fa87b582c264b41d0
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 function get_permissions($dn, $object, $attribute= "", $skip_write= FALSE)
202 {
203 /* If we are forced to skip ACLs checks for the current user
204 then return all permissions.
205 */
206 if($this->ignore_acl_for_current_user()){
207 return("rwcdm");
208 }
210 /* Push cache answer? */
211 $ACL_CACHE = &session::get('ACL_CACHE');
212 if (isset($ACL_CACHE["$dn+$object+$attribute"])){
214 /* Remove write if needed */
215 if ($skip_write){
216 $ret = preg_replace('/w/', '', $ACL_CACHE["$dn+$object+$attribute"]);
217 }else{
218 $ret = $ACL_CACHE["$dn+$object+$attribute"];
219 }
220 return($ret);
221 }
223 /* Get ldap object, for later filter checks
224 */
225 $ldap = $this->config->get_ldap_link();
227 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
229 /* Build dn array */
230 $path= split(',', $dn);
231 $path= array_reverse($path);
233 /* Walk along the path to evaluate the acl */
234 $cpath= "";
235 foreach ($path as $element){
237 /* Clean potential ACLs for each level */
238 $acl= $this->cleanACL($acl);
240 if ($cpath == ""){
241 $cpath= $element;
242 } else {
243 $cpath= $element.','.$cpath;
244 }
245 if (isset($this->ACL[$cpath])){
247 /* Inspect this ACL, place the result into ACL */
248 foreach ($this->ACL[$cpath] as $subacl){
250 /* Reset? Just clean the ACL and turn over to the next one... */
251 if ($subacl['type'] == 'reset'){
252 $acl= $this->cleanACL($acl, TRUE);
253 continue;
254 }
256 if($subacl['type'] == "role") {
257 echo "role skipped";
258 continue;
259 }
261 /* With user filter */
262 if (isset($subacl['filter']) && !empty($subacl['filter'])){
263 $sdn = preg_replace("/^[^,]*+,/","",$dn);
264 $ldap->cd($sdn);
265 $ldap->ls($subacl['filter'],$sdn);
266 if(!$ldap->count()){
267 continue;
268 }else{
269 $found = FALSE;
270 while($attrs = $ldap->fetch()){
271 if($attrs['dn'] == $dn){
272 $found = TRUE;
273 break;
274 }
275 }
276 if(!$found){
277 continue;
278 }
279 }
280 }
282 /* Per attribute ACL? */
283 if (isset($subacl['acl'][$object][$attribute])){
284 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attribute]);
285 continue;
286 }
288 /* Per object ACL? */
289 if (isset($subacl['acl'][$object][0])){
290 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][0]);
291 continue;
292 }
294 /* Global ACL? */
295 if (isset($subacl['acl']['all'][0])){
296 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']['all'][0]);
297 continue;
298 }
300 /* If attribute is "", we want to know, if we've *any* permissions here... */
301 if ($attribute == "" && isset($subacl['acl'][$object])){
302 foreach($subacl['acl'][$object] as $attr => $dummy){
303 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
304 }
305 continue;
306 }
308 }
309 }
310 }
312 /* Assemble string */
313 $ret= "";
314 foreach ($acl as $key => $value){
315 if ($value !== ""){
316 $ret.= $key;
317 }
318 }
320 $ACL_CACHE["$dn+$object+$attribute"]= $ret;
322 /* Remove write if needed */
323 if ($skip_write){
324 $ret= preg_replace('/w/', '', $ret);
325 }
326 return ($ret);
327 }
330 /* Extract all departments that are accessible (direct or 'on the way' to an
331 accessible department) */
332 function get_module_departments($module)
333 {
335 /* If we are forced to skip ACLs checks for the current user
336 then return all departments as valid.
337 */
338 if($this->ignore_acl_for_current_user()){
339 return(array_keys($this->config->idepartments));
340 }
342 /* Use cached results if possilbe */
343 $ACL_CACHE = session::get('ACL_CACHE');
344 if(isset($ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)])){
345 return($ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)]);
346 }
348 global $plist;
350 $objects= array();
351 $deps= array();
353 /* Extract all relevant objects for this module from plist */
354 foreach ($plist->info as $object => $info){
355 if (!isset($info['plCategory'])){
356 continue;
357 }
358 foreach ($info['plCategory'] as $idx => $data){
359 if (preg_match('/^[0-9]+$/', $idx)){
360 if ($data == $module){
361 $objects[$object]= $object;
362 }
363 } else {
364 if ($idx == $module){
365 $objects[$object]= $object;
366 }
367 }
368 }
369 }
371 /* For all gosaDepartments */
372 foreach ($this->config->departments as $dn){
373 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
375 /* Build dn array */
376 $path= split(',', $dn);
377 $path= array_reverse($path);
379 /* Walk along the path to evaluate the acl */
380 $cpath= "";
381 foreach ($path as $element){
383 /* Clean potential ACLs for each level */
384 $acl= $this->cleanACL($acl);
386 if ($cpath == ""){
387 $cpath= $element;
388 } else {
389 $cpath= $element.','.$cpath;
390 }
391 if (isset($this->ACL[$cpath])){
393 /* Inspect this ACL, place the result into ACL */
394 foreach ($this->ACL[$cpath] as $subacl){
396 /* Reset? Just clean the ACL and turn over to the next one... */
397 if ($subacl['type'] == 'reset'){
398 $acl= $this->cleanACL($acl, TRUE);
399 continue;
400 }
402 if($subacl['type'] == 'role'){
403 echo "role skipped";
404 continue;
405 }
407 /* Per object ACL? */
408 foreach ($objects as $object){
409 if (isset($subacl['acl']["$module/$object"])){
410 foreach($subacl['acl']["$module/$object"] as $attribute => $dcl){
411 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/$object"][$attribute]);
412 }
413 }
414 }
416 /* Global ACL? */
417 if (isset($subacl['acl']["$module/all"][0])){
418 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/all"][0]);
419 continue;
420 }
422 /* Global ACL? */
423 if (isset($subacl['acl']["all"][0])){
424 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["all"][0]);
425 continue;
426 }
427 }
428 }
429 }
431 /* Add department, if we have (some) permissions for the required module */
432 foreach ($acl as $val){
433 if ($val != ""){
434 $deps[]= $dn;
435 break;
436 }
437 }
438 }
440 $ACL_CACHE = &session::get('ACL_CACHE');
441 $ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)] = $deps;
442 return ($deps);
443 }
446 function mergeACL($acl, $type, $newACL)
447 {
448 if (strpos($newACL, 'w') !== FALSE && strpos($newACL, 'r') === FALSE){
449 $newACL .= "r";
450 }
452 foreach(str_split($newACL) as $char){
454 /* Ignore invalid characters */
455 if (!preg_match('/[rwcdm]/', $char)){
456 continue;
457 }
459 /* Skip permanent and subtree entries */
460 if (preg_match('/[sp]/', $acl[$char])){
461 continue;
462 }
464 switch ($type){
465 case 'psub':
466 $acl[$char]= 'p';
467 break;
469 case 'sub':
470 $acl[$char]= 's';
471 break;
473 case 'one':
474 $acl[$char]= 1;
475 break;
477 case 'base':
478 if ($acl[$char] != 1){
479 $acl[$char]= 0;
480 }
481 break;
482 }
483 }
485 return ($acl);
486 }
489 function cleanACL($acl, $reset= FALSE)
490 {
491 foreach ($acl as &$value){
493 /* Reset removes everything but 'p' */
494 if ($reset && $value != 'p'){
495 $value= "";
496 continue;
497 }
499 /* Decrease tree level */
500 if (is_int($value)){
501 if ($value){
502 $value--;
503 } else {
504 $value= "";
505 }
506 }
507 }
509 return ($acl);
510 }
513 /* #FIXME This could be logical wrong or could be optimized in the future
514 Return combined acls for a given category.
515 All acls will be combined like boolean AND
516 As example ('rwcdm' + 'rcd' + 'wrm'= 'r')
518 Results will be cached in $this->result_cache.
519 $this->result_cache will be resetted if load_acls is called.
520 */
521 function has_complete_category_acls($dn,$category)
522 {
523 $acl = "rwcdm";
524 $types = "rwcdm";
526 if(!is_string($category)){
527 trigger_error("category must be string");
528 $acl = "";
529 }else{
530 if(!isset($this->result_cache['has_complete_category_acls'][$dn][$category])) {
531 if (isset($this->ocMapping[$category])){
532 foreach($this->ocMapping[$category] as $oc){
534 /* Skip objectClass '0' (e.g. users/0) get_permissions will ever return '' ?? */
535 if($oc == "0") continue;
536 $tmp = $this->get_permissions($dn, $category."/".$oc);
537 for($i = 0 ; $i < strlen($types); $i++) {
538 if(!preg_match("/".$types[$i]."/",$tmp)){
539 $acl = preg_replace("/".$types[$i]."/","",$acl);
540 }
541 }
542 }
543 }else{
544 trigger_error("Invalid type of category ".$category);
545 $acl = "";
546 }
547 $this->result_cache['has_complete_category_acls'][$dn][$category] = $acl;
548 }else{
549 $acl = $this->result_cache['has_complete_category_acls'][$dn][$category];
550 }
551 }
552 return($acl);
553 }
556 /*! \brief Returns TRUE if the current user is configured in IGNORE_ACL=".." in your gosa.conf
557 @param Return Boolean TRUE if we have to skip ACL checks else FALSE.
558 */
559 function ignore_acl_for_current_user()
560 {
561 return(isset($this->config->current['IGNORE_ACL']) && $this->config->current['IGNORE_ACL'] == $this->dn);
562 }
564 }
566 // vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
567 ?>