1 <?php
2 /*
3 This code is part of GOsa (https://gosa.gonicus.de)
4 Copyright (C) 2003-2005 Cajus Pollmeier
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
21 class userinfo
22 {
23 var $dn;
24 var $ip;
25 var $username;
26 var $cn;
27 var $uid;
28 var $gidNumber= -1;
29 var $language= "";
30 var $config;
31 var $gosaUnitTag= "";
32 var $subtreeACL= array();
33 var $ACL= array();
34 var $ocMapping= array();
35 var $groups= array();
36 var $result_cache =array();
38 /* get acl's an put them into the userinfo object
39 attr subtreeACL (userdn:components, userdn:component1#sub1#sub2,component2,...) */
40 function userinfo(&$config, $userdn){
41 $this->config= &$config;
42 $ldap= $this->config->get_ldap_link();
43 $ldap->cat($userdn,array('sn', 'givenName', 'uid', 'gidNumber', 'preferredLanguage', 'gosaUnitTag'));
44 $attrs= $ldap->fetch();
46 if (isset($attrs['givenName'][0]) && isset($attrs['sn'][0])){
47 $this->cn= $attrs['givenName'][0]." ".$attrs['sn'][0];
48 } else {
49 $this->cn= $attrs['uid'][0];
50 }
51 if (isset($attrs['gidNumber'][0])){
52 $this->gidNumber= $attrs['gidNumber'][0];
53 }
55 /* Assign user language */
56 if (isset($attrs['preferredLanguage'][0])){
57 $this->language= $attrs['preferredLanguage'][0];
58 }
60 if (isset($attrs['gosaUnitTag'][0])){
61 $this->gosaUnitTag= $attrs['gosaUnitTag'][0];
62 }
64 $this->dn= $userdn;
65 $this->uid= $attrs['uid'][0];
66 $this->ip= $_SERVER['REMOTE_ADDR'];
68 /* Initialize ACL_CACHE */
69 $_SESSION['ACL_CACHE']= array();
70 $this->reset_acl_cache();
71 }
74 public function reset_acl_cache()
75 {
76 /* Initialize ACL_CACHE */
77 $_SESSION['ACL_CACHE']= array();
78 }
80 function loadACL()
81 {
82 $this->ACL= array();
83 $this->groups= array();
84 $this->result_cache =array();
85 $this->reset_acl_cache();
86 $ldap= $this->config->get_ldap_link();
87 $ldap->cd($this->config->current['BASE']);
89 /* Get member groups... */
90 $ldap->search("(&(objectClass=posixGroup)(memberUid=".$this->uid."))", array('dn'));
91 while ($attrs= $ldap->fetch()){
92 $this->groups[$attrs['dn']]= $attrs['dn'];
93 }
95 /* Crawl through ACLs and move relevant to the tree */
96 $ldap->search("(objectClass=gosaACL)", array('dn', 'gosaAclEntry'));
97 $aclp= array();
98 $aclc= array();
99 while ($attrs= $ldap->fetch()){
101 /* Insert links in ACL array */
102 $aclp[$attrs['dn']]= substr_count($attrs['dn'], ',');
103 $aclc[$attrs['dn']]= array();
104 $ol= array();
105 for($i= 0; $i<$attrs['gosaAclEntry']['count']; $i++){
106 $ol= array_merge($ol, @acl::explodeAcl($attrs['gosaAclEntry'][$i]));
107 }
108 $aclc[$attrs['dn']]= $ol;
109 }
111 /* Resolve roles here.
112 */
113 foreach($aclc as $dn => $data){
114 foreach($data as $prio => $aclc_value) {
115 if($aclc_value['type'] == "role"){
117 unset($aclc[$dn][$prio]);
119 $ldap->cat($aclc_value['acl'],array("gosaAclTemplate"));
120 $attrs = $ldap->fetch();
122 if(isset($attrs['gosaAclTemplate'])){
123 for($i= 0; $i<$attrs['gosaAclTemplate']['count']; $i++){
124 $tmp = @acl::explodeAcl($attrs['gosaAclTemplate'][$i]);
126 foreach($tmp as $new_acl){
127 $new_acl['members'] = $aclc_value['members'];
128 $aclc[$dn][] =$new_acl;
129 }
130 }
131 }
132 }
133 }
134 }
136 /* ACL's read, sort for tree depth */
137 asort($aclp);
139 /* Sort in tree order */
140 foreach ($aclp as $dn => $acl){
141 /* Check if we need to keep this ACL */
142 foreach($aclc[$dn] as $idx => $type){
143 $interresting= FALSE;
145 /* No members? This is good for all users... */
146 if (!count($type['members'])){
147 $interresting= TRUE;
148 } else {
150 /* Inspect members... */
151 foreach ($type['members'] as $grp => $grpdsc){
152 /* Some group inside the members that is relevant for us? */
153 if (in_array_ics(preg_replace('/^G:/', '', $grp), $this->groups)){
154 $interresting= TRUE;
155 }
157 /* User inside the members? */
158 if (preg_replace('/^U:/', '', $grp) == $this->dn){
159 $interresting= TRUE;
160 }
161 }
162 }
164 if ($interresting){
165 if (!isset($this->ACL[$dn])){
166 $this->ACL[$dn]= array();
167 }
168 $this->ACL[$dn][$idx]= $type;
169 }
170 }
172 }
173 }
176 function get_category_permissions($dn, $category)
177 {
178 /* Get list of objectClasses and get the permissions for it */
179 $acl= "";
180 if (isset($this->ocMapping[$category])){
181 foreach($this->ocMapping[$category] as $oc){
182 $acl.= $this->get_permissions($dn, $category."/".$oc);
183 }
184 }
186 return ($acl);
187 }
190 function get_permissions($dn, $object, $attribute= "", $skip_write= FALSE)
191 {
192 /* Push cache answer? */
193 if (isset($_SESSION['ACL_CACHE']["$dn+$object+$attribute"])){
194 return ($_SESSION['ACL_CACHE']["$dn+$object+$attribute"]);
195 }
197 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
199 /* Build dn array */
200 $path= split(',', $dn);
201 $path= array_reverse($path);
203 /* Walk along the path to evaluate the acl */
204 $cpath= "";
205 foreach ($path as $element){
207 /* Clean potential ACLs for each level */
208 $acl= $this->cleanACL($acl);
210 if ($cpath == ""){
211 $cpath= $element;
212 } else {
213 $cpath= $element.','.$cpath;
214 }
215 if (isset($this->ACL[$cpath])){
217 /* Inspect this ACL, place the result into ACL */
218 foreach ($this->ACL[$cpath] as $subacl){
220 /* Reset? Just clean the ACL and turn over to the next one... */
221 if ($subacl['type'] == 'reset'){
222 $acl= $this->cleanACL($acl, TRUE);
223 continue;
224 }
226 if($subacl['type'] == "role") {
227 echo "role skipped";
228 continue;
229 }
231 /* Per attribute ACL? */
232 if (isset($subacl['acl'][$object][$attribute])){
233 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attribute]);
234 continue;
235 }
237 /* Per object ACL? */
238 if (isset($subacl['acl'][$object][0])){
239 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][0]);
240 continue;
241 }
243 /* Global ACL? */
244 if (isset($subacl['acl']['all'][0])){
245 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']['all'][0]);
246 continue;
247 }
249 /* If attribute is "", we want to know, if we've *any* permissions here... */
250 if ($attribute == "" && isset($subacl['acl'][$object])){
251 foreach($subacl['acl'][$object] as $attr => $dummy){
252 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
253 }
254 continue;
255 }
257 }
258 }
259 }
261 /* Assemble string */
262 $ret= "";
263 foreach ($acl as $key => $value){
264 if ($value != ""){
265 $ret.= $key;
266 }
267 }
269 /* Remove write if needed */
270 if ($skip_write){
271 $ret= preg_replace('/w/', '', $ret);
272 }
274 $_SESSION['ACL_CACHE']["$dn+$object+$attribute"]= $ret;
275 return ($ret);
276 }
279 /* Extract all departments that are accessible (direct or 'on the way' to an
280 accessible department) */
281 function get_module_departments($module)
282 {
283 global $plist;
285 $objects= array();
286 $deps= array();
288 /* Extract all relevant objects for this module from plist */
289 foreach ($plist->info as $object => $info){
290 if (!isset($info['plCategory'])){
291 continue;
292 }
293 foreach ($info['plCategory'] as $idx => $data){
294 if (preg_match('/^[0-9]+$/', $idx)){
295 if ($data == $module){
296 $objects[$object]= $object;
297 }
298 } else {
299 if ($idx == $module){
300 $objects[$object]= $object;
301 }
302 }
303 }
304 }
306 /* For all gosaDepartments */
307 foreach ($this->config->departments as $dn){
308 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
310 /* Build dn array */
311 $path= split(',', $dn);
312 $path= array_reverse($path);
314 /* Walk along the path to evaluate the acl */
315 $cpath= "";
316 foreach ($path as $element){
318 /* Clean potential ACLs for each level */
319 $acl= $this->cleanACL($acl);
321 if ($cpath == ""){
322 $cpath= $element;
323 } else {
324 $cpath= $element.','.$cpath;
325 }
326 if (isset($this->ACL[$cpath])){
328 /* Inspect this ACL, place the result into ACL */
329 foreach ($this->ACL[$cpath] as $subacl){
331 /* Reset? Just clean the ACL and turn over to the next one... */
332 if ($subacl['type'] == 'reset'){
333 $acl= $this->cleanACL($acl, TRUE);
334 continue;
335 }
337 if($subacl['type'] == 'role'){
338 echo "role skipped";
339 continue;
340 }
342 /* Per object ACL? */
343 foreach ($objects as $object){
344 if (isset($subacl['acl']["$module/$object"])){
345 foreach($subacl['acl']["$module/$object"] as $attribute => $dcl){
346 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/$object"][$attribute]);
347 }
348 }
349 }
351 /* Global ACL? */
352 if (isset($subacl['acl']["$module/all"][0])){
353 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/all"][0]);
354 continue;
355 }
357 /* Global ACL? */
358 if (isset($subacl['acl']["all"][0])){
359 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["all"][0]);
360 continue;
361 }
362 }
363 }
364 }
366 /* Add department, if we have (some) permissions for the required module */
367 foreach ($acl as $val){
368 if ($val != ""){
369 $deps[]= $dn;
370 break;
371 }
372 }
373 }
375 return ($deps);
376 }
379 function mergeACL($acl, $type, $newACL)
380 {
381 if (strpos($newACL, 'w') !== FALSE && strpos($newACL, 'r') === FALSE){
382 $newACL .= "r";
383 }
385 foreach(str_split($newACL) as $char){
387 /* Ignore invalid characters */
388 if (!preg_match('/[rwcdm]/', $char)){
389 continue;
390 }
392 /* Skip permanent and subtree entries */
393 if (preg_match('/[sp]/', $acl[$char])){
394 continue;
395 }
397 switch ($type){
398 case 'psub':
399 $acl[$char]= 'p';
400 break;
402 case 'sub':
403 $acl[$char]= 's';
404 break;
406 case 'one':
407 $acl[$char]= 1;
408 break;
410 case 'base':
411 if ($acl[$char] != 1){
412 $acl[$char]= 0;
413 }
414 break;
415 }
416 }
418 return ($acl);
419 }
422 function cleanACL($acl, $reset= FALSE)
423 {
424 foreach ($acl as &$value){
426 /* Reset removes everything but 'p' */
427 if ($reset && $value != 'p'){
428 $value= "";
429 continue;
430 }
432 /* Decrease tree level */
433 if (is_int($value)){
434 if ($value){
435 $value--;
436 } else {
437 $value= "";
438 }
439 }
440 }
442 return ($acl);
443 }
446 /* #FIXME This could be logical wrong or could be optimized in the future
447 Return combined acls for a given category.
448 All acls will be combined like boolean AND
449 As example ('rwcdm' + 'rcd' + 'wrm'= 'r')
451 Results will be cached in $this->result_cache.
452 $this->result_cache will be resetted if load_acls is called.
453 */
454 function has_complete_category_acls($dn,$category)
455 {
456 $acl = "rwcdm";
457 $types = "rwcdm";
459 if(!is_string($category)){
460 trigger_error("category must be string");
461 $acl = "";
462 }else{
463 if(!isset($this->result_cache['has_complete_category_acls'][$dn][$category])) {
464 if (isset($this->ocMapping[$category])){
465 foreach($this->ocMapping[$category] as $oc){
467 /* Skip objectClass '0' (e.g. users/0) get_permissions will ever return '' ?? */
468 if($oc == "0") continue;
469 $tmp = $this->get_permissions($dn, $category."/".$oc);
470 for($i = 0 ; $i < strlen($types); $i++) {
471 if(!preg_match("/".$types[$i]."/",$tmp)){
472 $acl = preg_replace("/".$types[$i]."/","",$acl);
473 }
474 }
475 }
476 }else{
477 trigger_error("Invalid type of category ".$category);
478 $acl = "";
479 }
480 $this->result_cache['has_complete_category_acls'][$dn][$category] = $acl;
481 }else{
482 $acl = $this->result_cache['has_complete_category_acls'][$dn][$category];
483 }
484 }
485 return($acl);
486 }
487 }
489 // vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
490 ?>