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 /* Get list of objectClasses and get the permissions for it */
182 $acl= "";
183 if (isset($this->ocMapping[$category])){
184 foreach($this->ocMapping[$category] as $oc){
185 $acl.= $this->get_permissions($dn, $category."/".$oc);
186 }
187 }else{
188 trigger_error("ACL request for an invalid category (".$category.").");
189 }
191 return ($acl);
192 }
195 function get_permissions($dn, $object, $attribute= "", $skip_write= FALSE)
196 {
197 /* Push cache answer? */
198 $ACL_CACHE = &session::get('ACL_CACHE');
199 if (isset($ACL_CACHE["$dn+$object+$attribute"])){
201 /* Remove write if needed */
202 if ($skip_write){
203 $ret = preg_replace('/w/', '', $ACL_CACHE["$dn+$object+$attribute"]);
204 }else{
205 $ret = $ACL_CACHE["$dn+$object+$attribute"];
206 }
207 return($ret);
208 }
210 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
212 /* Build dn array */
213 $path= split(',', $dn);
214 $path= array_reverse($path);
216 /* Walk along the path to evaluate the acl */
217 $cpath= "";
218 foreach ($path as $element){
220 /* Clean potential ACLs for each level */
221 $acl= $this->cleanACL($acl);
223 if ($cpath == ""){
224 $cpath= $element;
225 } else {
226 $cpath= $element.','.$cpath;
227 }
228 if (isset($this->ACL[$cpath])){
230 /* Inspect this ACL, place the result into ACL */
231 foreach ($this->ACL[$cpath] as $subacl){
233 /* Reset? Just clean the ACL and turn over to the next one... */
234 if ($subacl['type'] == 'reset'){
235 $acl= $this->cleanACL($acl, TRUE);
236 continue;
237 }
239 if($subacl['type'] == "role") {
240 echo "role skipped";
241 continue;
242 }
244 /* Per attribute ACL? */
245 if (isset($subacl['acl'][$object][$attribute])){
246 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attribute]);
247 continue;
248 }
250 /* Per object ACL? */
251 if (isset($subacl['acl'][$object][0])){
252 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][0]);
253 continue;
254 }
256 /* Global ACL? */
257 if (isset($subacl['acl']['all'][0])){
258 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']['all'][0]);
259 continue;
260 }
262 /* If attribute is "", we want to know, if we've *any* permissions here... */
263 if ($attribute == "" && isset($subacl['acl'][$object])){
264 foreach($subacl['acl'][$object] as $attr => $dummy){
265 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
266 }
267 continue;
268 }
270 }
271 }
272 }
274 /* Assemble string */
275 $ret= "";
276 foreach ($acl as $key => $value){
277 if ($value != ""){
278 $ret.= $key;
279 }
280 }
282 $ACL_CACHE["$dn+$object+$attribute"]= $ret;
284 /* Remove write if needed */
285 if ($skip_write){
286 $ret= preg_replace('/w/', '', $ret);
287 }
288 return ($ret);
289 }
292 /* Extract all departments that are accessible (direct or 'on the way' to an
293 accessible department) */
294 function get_module_departments($module)
295 {
296 /* Use cached results if possilbe */
297 $ACL_CACHE = session::get('ACL_CACHE');
298 if(isset($ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)])){
299 return($ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)]);
300 }
302 global $plist;
304 $objects= array();
305 $deps= array();
307 /* Extract all relevant objects for this module from plist */
308 foreach ($plist->info as $object => $info){
309 if (!isset($info['plCategory'])){
310 continue;
311 }
312 foreach ($info['plCategory'] as $idx => $data){
313 if (preg_match('/^[0-9]+$/', $idx)){
314 if ($data == $module){
315 $objects[$object]= $object;
316 }
317 } else {
318 if ($idx == $module){
319 $objects[$object]= $object;
320 }
321 }
322 }
323 }
325 /* For all gosaDepartments */
326 foreach ($this->config->departments as $dn){
327 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
329 /* Build dn array */
330 $path= split(',', $dn);
331 $path= array_reverse($path);
333 /* Walk along the path to evaluate the acl */
334 $cpath= "";
335 foreach ($path as $element){
337 /* Clean potential ACLs for each level */
338 $acl= $this->cleanACL($acl);
340 if ($cpath == ""){
341 $cpath= $element;
342 } else {
343 $cpath= $element.','.$cpath;
344 }
345 if (isset($this->ACL[$cpath])){
347 /* Inspect this ACL, place the result into ACL */
348 foreach ($this->ACL[$cpath] as $subacl){
350 /* Reset? Just clean the ACL and turn over to the next one... */
351 if ($subacl['type'] == 'reset'){
352 $acl= $this->cleanACL($acl, TRUE);
353 continue;
354 }
356 if($subacl['type'] == 'role'){
357 echo "role skipped";
358 continue;
359 }
361 /* Per object ACL? */
362 foreach ($objects as $object){
363 if (isset($subacl['acl']["$module/$object"])){
364 foreach($subacl['acl']["$module/$object"] as $attribute => $dcl){
365 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/$object"][$attribute]);
366 }
367 }
368 }
370 /* Global ACL? */
371 if (isset($subacl['acl']["$module/all"][0])){
372 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/all"][0]);
373 continue;
374 }
376 /* Global ACL? */
377 if (isset($subacl['acl']["all"][0])){
378 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["all"][0]);
379 continue;
380 }
381 }
382 }
383 }
385 /* Add department, if we have (some) permissions for the required module */
386 foreach ($acl as $val){
387 if ($val != ""){
388 $deps[]= $dn;
389 break;
390 }
391 }
392 }
394 $ACL_CACHE = &session::get('ACL_CACHE');
395 $ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)] = $deps;
396 return ($deps);
397 }
400 function mergeACL($acl, $type, $newACL)
401 {
402 if (strpos($newACL, 'w') !== FALSE && strpos($newACL, 'r') === FALSE){
403 $newACL .= "r";
404 }
406 foreach(str_split($newACL) as $char){
408 /* Ignore invalid characters */
409 if (!preg_match('/[rwcdm]/', $char)){
410 continue;
411 }
413 /* Skip permanent and subtree entries */
414 if (preg_match('/[sp]/', $acl[$char])){
415 continue;
416 }
418 switch ($type){
419 case 'psub':
420 $acl[$char]= 'p';
421 break;
423 case 'sub':
424 $acl[$char]= 's';
425 break;
427 case 'one':
428 $acl[$char]= 1;
429 break;
431 case 'base':
432 if ($acl[$char] != 1){
433 $acl[$char]= 0;
434 }
435 break;
436 }
437 }
439 return ($acl);
440 }
443 function cleanACL($acl, $reset= FALSE)
444 {
445 foreach ($acl as &$value){
447 /* Reset removes everything but 'p' */
448 if ($reset && $value != 'p'){
449 $value= "";
450 continue;
451 }
453 /* Decrease tree level */
454 if (is_int($value)){
455 if ($value){
456 $value--;
457 } else {
458 $value= "";
459 }
460 }
461 }
463 return ($acl);
464 }
467 /* #FIXME This could be logical wrong or could be optimized in the future
468 Return combined acls for a given category.
469 All acls will be combined like boolean AND
470 As example ('rwcdm' + 'rcd' + 'wrm'= 'r')
472 Results will be cached in $this->result_cache.
473 $this->result_cache will be resetted if load_acls is called.
474 */
475 function has_complete_category_acls($dn,$category)
476 {
477 $acl = "rwcdm";
478 $types = "rwcdm";
480 if(!is_string($category)){
481 trigger_error("category must be string");
482 $acl = "";
483 }else{
484 if(!isset($this->result_cache['has_complete_category_acls'][$dn][$category])) {
485 if (isset($this->ocMapping[$category])){
486 foreach($this->ocMapping[$category] as $oc){
488 /* Skip objectClass '0' (e.g. users/0) get_permissions will ever return '' ?? */
489 if($oc == "0") continue;
490 $tmp = $this->get_permissions($dn, $category."/".$oc);
491 for($i = 0 ; $i < strlen($types); $i++) {
492 if(!preg_match("/".$types[$i]."/",$tmp)){
493 $acl = preg_replace("/".$types[$i]."/","",$acl);
494 }
495 }
496 }
497 }else{
498 trigger_error("Invalid type of category ".$category);
499 $acl = "";
500 }
501 $this->result_cache['has_complete_category_acls'][$dn][$category] = $acl;
502 }else{
503 $acl = $this->result_cache['has_complete_category_acls'][$dn][$category];
504 }
505 }
506 return($acl);
507 }
508 }
510 // vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
511 ?>