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+$attribute"])){
195 /* Remove write if needed */
196 if ($skip_write){
197 $ret = preg_replace('/w/', '', $_SESSION['ACL_CACHE']["$dn+$object+$attribute"]);
198 }else{
199 $ret = $_SESSION['ACL_CACHE']["$dn+$object+$attribute"];
200 }
201 return($ret);
202 }
204 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
206 /* Build dn array */
207 $path= split(',', $dn);
208 $path= array_reverse($path);
210 /* Walk along the path to evaluate the acl */
211 $cpath= "";
212 foreach ($path as $element){
214 /* Clean potential ACLs for each level */
215 $acl= $this->cleanACL($acl);
217 if ($cpath == ""){
218 $cpath= $element;
219 } else {
220 $cpath= $element.','.$cpath;
221 }
222 if (isset($this->ACL[$cpath])){
224 /* Inspect this ACL, place the result into ACL */
225 foreach ($this->ACL[$cpath] as $subacl){
227 /* Reset? Just clean the ACL and turn over to the next one... */
228 if ($subacl['type'] == 'reset'){
229 $acl= $this->cleanACL($acl, TRUE);
230 continue;
231 }
233 if($subacl['type'] == "role") {
234 echo "role skipped";
235 continue;
236 }
238 /* Per attribute ACL? */
239 if (isset($subacl['acl'][$object][$attribute])){
240 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attribute]);
241 continue;
242 }
244 /* Per object ACL? */
245 if (isset($subacl['acl'][$object][0])){
246 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][0]);
247 continue;
248 }
250 /* Global ACL? */
251 if (isset($subacl['acl']['all'][0])){
252 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']['all'][0]);
253 continue;
254 }
256 /* If attribute is "", we want to know, if we've *any* permissions here... */
257 if ($attribute == "" && isset($subacl['acl'][$object])){
258 foreach($subacl['acl'][$object] as $attr => $dummy){
259 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
260 }
261 continue;
262 }
264 }
265 }
266 }
268 /* Assemble string */
269 $ret= "";
270 foreach ($acl as $key => $value){
271 if ($value != ""){
272 $ret.= $key;
273 }
274 }
276 $_SESSION['ACL_CACHE']["$dn+$object+$attribute"]= $ret;
278 /* Remove write if needed */
279 if ($skip_write){
280 $ret= preg_replace('/w/', '', $ret);
281 }
282 return ($ret);
283 }
286 /* Extract all departments that are accessible (direct or 'on the way' to an
287 accessible department) */
288 function get_module_departments($module)
289 {
290 /* Use cached results if possilbe */
291 if(isset($_SESSION['ACL_CACHE']['MODULE_DEPARTMENTS'][serialize($module)])){
292 return($_SESSION['ACL_CACHE']['MODULE_DEPARTMENTS'][serialize($module)]);
293 }
295 global $plist;
297 $objects= array();
298 $deps= array();
300 /* Extract all relevant objects for this module from plist */
301 foreach ($plist->info as $object => $info){
302 if (!isset($info['plCategory'])){
303 continue;
304 }
305 foreach ($info['plCategory'] as $idx => $data){
306 if (preg_match('/^[0-9]+$/', $idx)){
307 if ($data == $module){
308 $objects[$object]= $object;
309 }
310 } else {
311 if ($idx == $module){
312 $objects[$object]= $object;
313 }
314 }
315 }
316 }
318 /* For all gosaDepartments */
319 foreach ($this->config->departments as $dn){
320 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
322 /* Build dn array */
323 $path= split(',', $dn);
324 $path= array_reverse($path);
326 /* Walk along the path to evaluate the acl */
327 $cpath= "";
328 foreach ($path as $element){
330 /* Clean potential ACLs for each level */
331 $acl= $this->cleanACL($acl);
333 if ($cpath == ""){
334 $cpath= $element;
335 } else {
336 $cpath= $element.','.$cpath;
337 }
338 if (isset($this->ACL[$cpath])){
340 /* Inspect this ACL, place the result into ACL */
341 foreach ($this->ACL[$cpath] as $subacl){
343 /* Reset? Just clean the ACL and turn over to the next one... */
344 if ($subacl['type'] == 'reset'){
345 $acl= $this->cleanACL($acl, TRUE);
346 continue;
347 }
349 if($subacl['type'] == 'role'){
350 echo "role skipped";
351 continue;
352 }
354 /* Per object ACL? */
355 foreach ($objects as $object){
356 if (isset($subacl['acl']["$module/$object"])){
357 foreach($subacl['acl']["$module/$object"] as $attribute => $dcl){
358 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/$object"][$attribute]);
359 }
360 }
361 }
363 /* Global ACL? */
364 if (isset($subacl['acl']["$module/all"][0])){
365 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/all"][0]);
366 continue;
367 }
369 /* Global ACL? */
370 if (isset($subacl['acl']["all"][0])){
371 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["all"][0]);
372 continue;
373 }
374 }
375 }
376 }
378 /* Add department, if we have (some) permissions for the required module */
379 foreach ($acl as $val){
380 if ($val != ""){
381 $deps[]= $dn;
382 break;
383 }
384 }
385 }
387 $_SESSION['ACL_CACHE']['MODULE_DEPARTMENTS'][serialize($module)] = $deps;
388 return ($deps);
389 }
392 function mergeACL($acl, $type, $newACL)
393 {
394 if (strpos($newACL, 'w') !== FALSE && strpos($newACL, 'r') === FALSE){
395 $newACL .= "r";
396 }
398 foreach(str_split($newACL) as $char){
400 /* Ignore invalid characters */
401 if (!preg_match('/[rwcdm]/', $char)){
402 continue;
403 }
405 /* Skip permanent and subtree entries */
406 if (preg_match('/[sp]/', $acl[$char])){
407 continue;
408 }
410 switch ($type){
411 case 'psub':
412 $acl[$char]= 'p';
413 break;
415 case 'sub':
416 $acl[$char]= 's';
417 break;
419 case 'one':
420 $acl[$char]= 1;
421 break;
423 case 'base':
424 if ($acl[$char] != 1){
425 $acl[$char]= 0;
426 }
427 break;
428 }
429 }
431 return ($acl);
432 }
435 function cleanACL($acl, $reset= FALSE)
436 {
437 foreach ($acl as &$value){
439 /* Reset removes everything but 'p' */
440 if ($reset && $value != 'p'){
441 $value= "";
442 continue;
443 }
445 /* Decrease tree level */
446 if (is_int($value)){
447 if ($value){
448 $value--;
449 } else {
450 $value= "";
451 }
452 }
453 }
455 return ($acl);
456 }
459 /* #FIXME This could be logical wrong or could be optimized in the future
460 Return combined acls for a given category.
461 All acls will be combined like boolean AND
462 As example ('rwcdm' + 'rcd' + 'wrm'= 'r')
464 Results will be cached in $this->result_cache.
465 $this->result_cache will be resetted if load_acls is called.
466 */
467 function has_complete_category_acls($dn,$category)
468 {
469 $acl = "rwcdm";
470 $types = "rwcdm";
472 if(!is_string($category)){
473 trigger_error("category must be string");
474 $acl = "";
475 }else{
476 if(!isset($this->result_cache['has_complete_category_acls'][$dn][$category])) {
477 if (isset($this->ocMapping[$category])){
478 foreach($this->ocMapping[$category] as $oc){
480 /* Skip objectClass '0' (e.g. users/0) get_permissions will ever return '' ?? */
481 if($oc == "0") continue;
482 $tmp = $this->get_permissions($dn, $category."/".$oc);
483 for($i = 0 ; $i < strlen($types); $i++) {
484 if(!preg_match("/".$types[$i]."/",$tmp)){
485 $acl = preg_replace("/".$types[$i]."/","",$acl);
486 }
487 }
488 }
489 }else{
490 trigger_error("Invalid type of category ".$category);
491 $acl = "";
492 }
493 $this->result_cache['has_complete_category_acls'][$dn][$category] = $acl;
494 }else{
495 $acl = $this->result_cache['has_complete_category_acls'][$dn][$category];
496 }
497 }
498 return($acl);
499 }
500 }
502 // vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
503 ?>