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]= $type;
171 }
172 }
174 }
176 }
179 function get_category_permissions($dn, $category)
180 {
181 /* If we are forced to skip ACLs checks for the current user
182 then return all permissions.
183 */
184 if($this->ignore_acl_for_current_user()){
185 return("rwcdm");
186 }
188 /* Get list of objectClasses and get the permissions for it */
189 $acl= "";
190 if (isset($this->ocMapping[$category])){
191 foreach($this->ocMapping[$category] as $oc){
192 $acl.= $this->get_permissions($dn, $category."/".$oc);
193 }
194 }else{
195 trigger_error("ACL request for an invalid category (".$category.").");
196 }
198 return ($acl);
199 }
202 function get_permissions($dn, $object, $attribute= "", $skip_write= FALSE)
203 {
204 /* If we are forced to skip ACLs checks for the current user
205 then return all permissions.
206 */
207 if($this->ignore_acl_for_current_user()){
208 return("rwcdm");
209 }
211 /* Push cache answer? */
212 $ACL_CACHE = &session::get('ACL_CACHE');
213 if (isset($ACL_CACHE["$dn+$object+$attribute"])){
215 /* Remove write if needed */
216 if ($skip_write){
217 $ret = preg_replace('/w/', '', $ACL_CACHE["$dn+$object+$attribute"]);
218 }else{
219 $ret = $ACL_CACHE["$dn+$object+$attribute"];
220 }
221 return($ret);
222 }
224 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
226 /* Build dn array */
227 $path= split(',', $dn);
228 $path= array_reverse($path);
230 /* Walk along the path to evaluate the acl */
231 $cpath= "";
232 foreach ($path as $element){
234 /* Clean potential ACLs for each level */
235 $acl= $this->cleanACL($acl);
237 if ($cpath == ""){
238 $cpath= $element;
239 } else {
240 $cpath= $element.','.$cpath;
241 }
242 if (isset($this->ACL[$cpath])){
244 /* Inspect this ACL, place the result into ACL */
245 foreach ($this->ACL[$cpath] as $subacl){
247 /* Reset? Just clean the ACL and turn over to the next one... */
248 if ($subacl['type'] == 'reset'){
249 $acl= $this->cleanACL($acl, TRUE);
250 continue;
251 }
253 if($subacl['type'] == "role") {
254 echo "role skipped";
255 continue;
256 }
258 /* Per attribute ACL? */
259 if (isset($subacl['acl'][$object][$attribute])){
260 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attribute]);
261 continue;
262 }
264 /* Per object ACL? */
265 if (isset($subacl['acl'][$object][0])){
266 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][0]);
267 continue;
268 }
270 /* Global ACL? */
271 if (isset($subacl['acl']['all'][0])){
272 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']['all'][0]);
273 continue;
274 }
276 /* If attribute is "", we want to know, if we've *any* permissions here... */
277 if ($attribute == "" && isset($subacl['acl'][$object])){
278 foreach($subacl['acl'][$object] as $attr => $dummy){
279 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
280 }
281 continue;
282 }
284 }
285 }
286 }
288 /* Assemble string */
289 $ret= "";
290 foreach ($acl as $key => $value){
291 if ($value != ""){
292 $ret.= $key;
293 }
294 }
296 $ACL_CACHE["$dn+$object+$attribute"]= $ret;
298 /* Remove write if needed */
299 if ($skip_write){
300 $ret= preg_replace('/w/', '', $ret);
301 }
302 return ($ret);
303 }
306 /* Extract all departments that are accessible (direct or 'on the way' to an
307 accessible department) */
308 function get_module_departments($module)
309 {
311 /* If we are forced to skip ACLs checks for the current user
312 then return all departments as valid.
313 */
314 if($this->ignore_acl_for_current_user()){
315 return(array_keys($this->config->idepartments));
316 }
318 /* Use cached results if possilbe */
319 $ACL_CACHE = session::get('ACL_CACHE');
320 if(isset($ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)])){
321 return($ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)]);
322 }
324 global $plist;
326 $objects= array();
327 $deps= array();
329 /* Extract all relevant objects for this module from plist */
330 foreach ($plist->info as $object => $info){
331 if (!isset($info['plCategory'])){
332 continue;
333 }
334 foreach ($info['plCategory'] as $idx => $data){
335 if (preg_match('/^[0-9]+$/', $idx)){
336 if ($data == $module){
337 $objects[$object]= $object;
338 }
339 } else {
340 if ($idx == $module){
341 $objects[$object]= $object;
342 }
343 }
344 }
345 }
347 /* For all gosaDepartments */
348 foreach ($this->config->departments as $dn){
349 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
351 /* Build dn array */
352 $path= split(',', $dn);
353 $path= array_reverse($path);
355 /* Walk along the path to evaluate the acl */
356 $cpath= "";
357 foreach ($path as $element){
359 /* Clean potential ACLs for each level */
360 $acl= $this->cleanACL($acl);
362 if ($cpath == ""){
363 $cpath= $element;
364 } else {
365 $cpath= $element.','.$cpath;
366 }
367 if (isset($this->ACL[$cpath])){
369 /* Inspect this ACL, place the result into ACL */
370 foreach ($this->ACL[$cpath] as $subacl){
372 /* Reset? Just clean the ACL and turn over to the next one... */
373 if ($subacl['type'] == 'reset'){
374 $acl= $this->cleanACL($acl, TRUE);
375 continue;
376 }
378 if($subacl['type'] == 'role'){
379 echo "role skipped";
380 continue;
381 }
383 /* Per object ACL? */
384 foreach ($objects as $object){
385 if (isset($subacl['acl']["$module/$object"])){
386 foreach($subacl['acl']["$module/$object"] as $attribute => $dcl){
387 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/$object"][$attribute]);
388 }
389 }
390 }
392 /* Global ACL? */
393 if (isset($subacl['acl']["$module/all"][0])){
394 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/all"][0]);
395 continue;
396 }
398 /* Global ACL? */
399 if (isset($subacl['acl']["all"][0])){
400 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["all"][0]);
401 continue;
402 }
403 }
404 }
405 }
407 /* Add department, if we have (some) permissions for the required module */
408 foreach ($acl as $val){
409 if ($val != ""){
410 $deps[]= $dn;
411 break;
412 }
413 }
414 }
416 $ACL_CACHE = &session::get('ACL_CACHE');
417 $ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)] = $deps;
418 return ($deps);
419 }
422 function mergeACL($acl, $type, $newACL)
423 {
424 if (strpos($newACL, 'w') !== FALSE && strpos($newACL, 'r') === FALSE){
425 $newACL .= "r";
426 }
428 foreach(str_split($newACL) as $char){
430 /* Ignore invalid characters */
431 if (!preg_match('/[rwcdm]/', $char)){
432 continue;
433 }
435 /* Skip permanent and subtree entries */
436 if (preg_match('/[sp]/', $acl[$char])){
437 continue;
438 }
440 switch ($type){
441 case 'psub':
442 $acl[$char]= 'p';
443 break;
445 case 'sub':
446 $acl[$char]= 's';
447 break;
449 case 'one':
450 $acl[$char]= 1;
451 break;
453 case 'base':
454 if ($acl[$char] != 1){
455 $acl[$char]= 0;
456 }
457 break;
458 }
459 }
461 return ($acl);
462 }
465 function cleanACL($acl, $reset= FALSE)
466 {
467 foreach ($acl as &$value){
469 /* Reset removes everything but 'p' */
470 if ($reset && $value != 'p'){
471 $value= "";
472 continue;
473 }
475 /* Decrease tree level */
476 if (is_int($value)){
477 if ($value){
478 $value--;
479 } else {
480 $value= "";
481 }
482 }
483 }
485 return ($acl);
486 }
489 /* #FIXME This could be logical wrong or could be optimized in the future
490 Return combined acls for a given category.
491 All acls will be combined like boolean AND
492 As example ('rwcdm' + 'rcd' + 'wrm'= 'r')
494 Results will be cached in $this->result_cache.
495 $this->result_cache will be resetted if load_acls is called.
496 */
497 function has_complete_category_acls($dn,$category)
498 {
499 $acl = "rwcdm";
500 $types = "rwcdm";
502 if(!is_string($category)){
503 trigger_error("category must be string");
504 $acl = "";
505 }else{
506 if(!isset($this->result_cache['has_complete_category_acls'][$dn][$category])) {
507 if (isset($this->ocMapping[$category])){
508 foreach($this->ocMapping[$category] as $oc){
510 /* Skip objectClass '0' (e.g. users/0) get_permissions will ever return '' ?? */
511 if($oc == "0") continue;
512 $tmp = $this->get_permissions($dn, $category."/".$oc);
513 for($i = 0 ; $i < strlen($types); $i++) {
514 if(!preg_match("/".$types[$i]."/",$tmp)){
515 $acl = preg_replace("/".$types[$i]."/","",$acl);
516 }
517 }
518 }
519 }else{
520 trigger_error("Invalid type of category ".$category);
521 $acl = "";
522 }
523 $this->result_cache['has_complete_category_acls'][$dn][$category] = $acl;
524 }else{
525 $acl = $this->result_cache['has_complete_category_acls'][$dn][$category];
526 }
527 }
528 return($acl);
529 }
532 /*! \brief Returns TRUE if the current user is configured in IGNORE_ACL=".." in your gosa.conf
533 @param Return Boolean TRUE if we have to skip ACL checks else FALSE.
534 */
535 function ignore_acl_for_current_user()
536 {
537 return(isset($this->config->current['IGNORE_ACL']) && $this->config->current['IGNORE_ACL'] == $this->dn);
538 }
540 }
542 // vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
543 ?>