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 $restrictions= array();
31 var $gidNumber= -1;
32 var $language= "";
33 var $config;
34 var $gosaUnitTag= "";
35 var $subtreeACL= array();
36 var $ACL= array();
37 var $ocMapping= array();
38 var $groups= array();
39 var $result_cache =array();
40 var $ignoreACL = FALSE;
41 var $ACLperPath = array();
42 var $ACLperPath_usesFilter = array();
44 /* get acl's an put them into the userinfo object
45 attr subtreeACL (userdn:components, userdn:component1#sub1#sub2,component2,...) */
46 function userinfo(&$config, $userdn){
47 $this->config= &$config;
48 $ldap= $this->config->get_ldap_link();
49 $ldap->cat($userdn,array('sn', 'givenName', 'uid', 'gidNumber', 'preferredLanguage', 'gosaUnitTag', 'gosaLoginRestriction'));
50 $attrs= $ldap->fetch();
52 if (isset($attrs['givenName'][0]) && isset($attrs['sn'][0])){
53 $this->cn= $attrs['givenName'][0]." ".$attrs['sn'][0];
54 } else {
55 $this->cn= $attrs['uid'][0];
56 }
57 if (isset($attrs['gidNumber'][0])){
58 $this->gidNumber= $attrs['gidNumber'][0];
59 }
61 /* Restrictions? */
62 if (isset($attrs['gosaLoginRestriction'])){
63 $this->restrictions= $attrs['gosaLoginRestriction'];
64 unset($this->restrictions['count']);
65 }
67 /* Assign user language */
68 if (isset($attrs['preferredLanguage'][0])){
69 $this->language= $attrs['preferredLanguage'][0];
70 }
72 if (isset($attrs['gosaUnitTag'][0])){
73 $this->gosaUnitTag= $attrs['gosaUnitTag'][0];
74 }
76 $this->dn= $userdn;
77 $this->uid= $attrs['uid'][0];
78 $this->ip= $_SERVER['REMOTE_ADDR'];
80 $this->ignoreACL = ($this->config->get_cfg_value("ignoreAcl") == $this->dn);
82 /* Initialize ACL_CACHE */
83 $this->reset_acl_cache();
84 }
87 public function reset_acl_cache()
88 {
89 /* Initialize ACL_CACHE */
90 session::global_set('ACL_CACHE',array());
91 }
93 function loadACL()
94 {
95 $this->ACL= array();
96 $this->groups= array();
97 $this->result_cache =array();
98 $this->reset_acl_cache();
99 $ldap= $this->config->get_ldap_link();
100 $ldap->cd($this->config->current['BASE']);
102 /* Get member groups... */
103 $ldap->search("(&(objectClass=posixGroup)(memberUid=".$this->uid."))", array('dn'));
104 while ($attrs= $ldap->fetch()){
105 $this->groups[$attrs['dn']]= $attrs['dn'];
106 }
108 /* Crawl through ACLs and move relevant to the tree */
109 $ldap->search("(objectClass=gosaACL)", array('dn', 'gosaAclEntry'));
110 $aclp= array();
111 $aclc= array();
112 while ($attrs= $ldap->fetch()){
114 /* Insert links in ACL array */
115 $aclp[$attrs['dn']]= substr_count($attrs['dn'], ',');
116 $aclc[$attrs['dn']]= array();
117 $ol= array();
118 for($i= 0; $i<$attrs['gosaAclEntry']['count']; $i++){
119 $ol= array_merge($ol, @acl::explodeAcl($attrs['gosaAclEntry'][$i]));
120 }
121 $aclc[$attrs['dn']]= $ol;
122 }
124 /* Resolve roles here.
125 */
126 foreach($aclc as $dn => $data){
127 foreach($data as $prio => $aclc_value) {
128 if($aclc_value['type'] == "role"){
130 unset($aclc[$dn][$prio]);
132 $ldap->cat($aclc_value['acl'],array("gosaAclTemplate"));
133 $attrs = $ldap->fetch();
135 if(isset($attrs['gosaAclTemplate'])){
136 for($i= 0; $i<$attrs['gosaAclTemplate']['count']; $i++){
137 $tmp = @acl::explodeAcl($attrs['gosaAclTemplate'][$i]);
139 foreach($tmp as $new_acl){
141 /* Keep non role attributes here! */
142 $new_acl['filter'] = $aclc_value['filter'];
143 $new_acl['members'] = $aclc_value['members'];
144 $aclc[$dn][] =$new_acl;
145 }
146 }
147 }
148 }
149 }
150 }
152 /* ACL's read, sort for tree depth */
153 asort($aclp);
155 /* Sort in tree order */
156 foreach ($aclp as $dn => $acl){
157 /* Check if we need to keep this ACL */
158 foreach($aclc[$dn] as $idx => $type){
159 $interresting= FALSE;
161 /* No members? This ACL rule is deactivated ... */
162 if (!count($type['members'])){
163 $interresting= FALSE;
164 } else {
166 /* Inspect members... */
167 foreach ($type['members'] as $grp => $grpdsc){
169 /* Some group inside the members that is relevant for us? */
170 if (in_array_ics(@LDAP::convert(preg_replace('/^G:/', '', $grp)), $this->groups)){
171 $interresting= TRUE;
172 }
174 /* User inside the members? */
175 if (preg_replace('/^U:/', '', $grp) == $this->dn){
176 $interresting= TRUE;
177 }
179 /* Wildcard? */
180 if (preg_match('/^G:\*/', $grp)){
181 $interresting= TRUE;
182 }
183 }
184 }
186 if ($interresting){
187 if (!isset($this->ACL[$dn])){
188 $this->ACL[$dn]= array();
189 }
190 $this->ACL[$dn][$idx]= $type;
191 }
192 $this->allACLs[$dn][$idx]= $type;
193 }
194 }
196 /* Create an array which represenet all relevant permissions settings
197 per dn.
199 The array will look like this:
201 . ['ou=base'] ['ou=base'] = array(ACLs);
202 .
203 . ['ou=dep1,ou=base']['ou=dep1,ou=base'] = array(ACLs);
204 . ['ou=base'] = array(ACLs);
207 For object located in 'ou=dep1,ou=base' we have to both ACLs,
208 for objects in 'ou=base' we only have to apply on ACL.
209 */
210 $without_self_acl = $all_acl = array();
211 foreach($this->ACL as $dn => $acl){
212 $sdn =$dn;
213 $first= TRUE; // Run at least once
214 while(strpos($dn,",") !== FALSE || $first){
215 $first = FALSE;
216 if(isset($this->ACL[$dn])){
217 $all_acl[$sdn][$dn] = $this->ACL[$dn];
218 $without_self_acl[$sdn][$dn] = $this->ACL[$dn];
219 foreach($without_self_acl[$sdn][$dn] as $acl_id => $acl_set){
221 /* Remember which ACL set has speicial user filter
222 */
223 if(isset($acl_set['filter']{1})){
224 $this->ACLperPath_usesFilter[$sdn] = TRUE;
225 }
227 /* Remove all acl entries which are especially for the current user (self acl)
228 */
229 if(isset($acl_set['acl'])){
230 foreach($acl_set['acl'] as $object => $object_acls){
231 if(isset($object_acls[0]) && strpos($object_acls[0],"s")){
232 unset($without_self_acl[$sdn][$dn][$acl_id]['acl'][$object]);
233 }
234 }
235 }
236 }
237 }
238 $dn = preg_replace("/^[^,]*+,/","",$dn);
239 }
240 }
241 $this->ACLperPath =$without_self_acl;
243 /* Append Self entry */
244 $dn = $this->dn;
245 while(strpos($dn,",") && !isset($all_acl[$dn])){
246 $dn = preg_replace("/^[^,]*+,/","",$dn);
247 }
248 if(isset($all_acl[$dn])){
249 $this->ACLperPath[$this->dn] = $all_acl[$dn];
250 }
251 }
254 /* Returns an array containing all target objects we've permssions on.
255 */
256 function get_acl_target_objects()
257 {
258 return(array_keys($this->ACLperPath));
259 }
262 function get_category_permissions($dn, $category, $any_acl = FALSE)
263 {
264 return($this->get_permissions($dn,$category.'/0',""));
265 }
268 /*! \brief Check if the given object (dn) is copyable
269 @param String The object dn
270 @param String The acl category (e.g. users)
271 @param String The acl class (e.g. user)
272 @return Boolean TRUE if the given object is copyable else FALSE
273 */
274 function is_copyable($dn, $object, $class)
275 {
276 return(preg_match("/r/",$this->has_complete_category_acls($dn, $object)));
277 }
280 /*! \brief Check if the given object (dn) is cutable
281 @param String The object dn
282 @param String The acl category (e.g. users)
283 @param String The acl class (e.g. user)
284 @return Boolean TRUE if the given object is cutable else FALSE
285 */
286 function is_cutable($dn, $object, $class)
287 {
288 $remove = preg_match("/d/",$this->get_permissions($dn,$object."/".$class));
289 $read = preg_match("/r/",$this->has_complete_category_acls($dn, $object));
290 return($remove && $read);
291 }
294 /*! \brief Checks if we are allowed to paste an object to the given destination ($dn)
295 @param String The destination dn
296 @param String The acl category (e.g. users)
297 @param String The acl class (e.g. user)
298 @return Boolean TRUE if we are allowed to paste an object.
299 */
300 function is_pasteable($dn, $object)
301 {
302 return(preg_match("/w/",$this->has_complete_category_acls($dn, $object)));
303 }
306 /*! \brief Checks if we are allowed to restore a snapshot for the given dn.
307 @param String The destination dn
308 @param String The acl category (e.g. users)
309 @return Boolean TRUE if we are allowed to restore a snapshot.
310 */
311 function allow_snapshot_restore($dn, $object)
312 {
313 if(!is_array($object)){
314 $object = array($object);
315 }
316 $r = $w = TRUE;
317 foreach($object as $category){
318 $w &= preg_match("/w/",$this->has_complete_category_acls($dn, $category));
319 $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
320 }
321 return($r && $w );
322 }
325 /*! \brief Checks if we are allowed to create a snapshot of the given dn.
326 @param String The source dn
327 @param String The acl category (e.g. users)
328 @return Boolean TRUE if we are allowed to restore a snapshot.
329 */
330 function allow_snapshot_create($dn, $object)
331 {
332 if(!is_array($object)){
333 $object = array($object);
334 }
335 $r = TRUE;
336 foreach($object as $category){
337 $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
338 }
339 return($r) ;
340 }
343 function get_permissions($dn, $object, $attribute= "", $skip_write= FALSE)
344 {
345 /* If we are forced to skip ACLs checks for the current user
346 then return all permissions.
347 */
348 if($this->ignore_acl_for_current_user()){
349 if($skip_write){
350 return("rcdm");
351 }
352 return("rwcdm");
353 }
355 /* Push cache answer? */
356 $ACL_CACHE = &session::global_get('ACL_CACHE');
357 if (isset($ACL_CACHE["$dn+$object+$attribute"])){
358 $ret = $ACL_CACHE["$dn+$object+$attribute"];
359 if($skip_write){
360 $ret = str_replace(array('w','c','d','m'), '',$ret);
361 }
362 return($ret);
363 }
365 /* Check for correct category and class values... */
366 if(strpos($object,'/') !== FALSE){
367 list($aclCategory, $aclClass) = split("/", $object);
368 }else{
369 $aclCategory = $object;
370 }
372 if($this->config->get_cfg_value("displayerrors") == "true"){
373 if(!isset($this->ocMapping[$aclCategory])){
374 trigger_error("Invalid ACL category '".$aclCategory."'! ({$object})");
375 return("");
376 }elseif(isset($aclClass) && !in_array($aclClass, $this->ocMapping[$aclCategory])){
377 trigger_error("Invalid ACL class '".$aclClass."'! ({$object})");
378 return("");
379 }
380 if(isset($aclClass) &&class_available($aclClass)){
381 $plInfo = call_user_func(array($aclClass, 'plInfo'));
382 if(!empty($attribute) && !isset($plInfo['plProvidedAcls'][$attribute])){
383 trigger_error("Invalid ACL attribute '".$attribute."'! ({$object})");
384 return("");
385 }
386 }
387 }
389 /* Detect the set of ACLs we have to check for this object
390 */
391 $adn = $dn;
392 while(!isset($this->ACLperPath[$adn]) && strpos($adn,",") !== FALSE){
393 $adn = preg_replace("/^[^,]*+,/","",$adn);
394 }
395 if(isset($this->ACLperPath[$adn])){
396 $ACL = $this->ACLperPath[$adn];
397 }else{
398 $ACL_CACHE["$dn+$object+$attribute"] = "";
399 return("");
400 }
402 /* If we do not need to respect any user-filter settings
403 we can skip the per object ACL checks.
404 */
405 $orig_dn= $dn;
406 if(!isset($this->ACLperPath_usesFilter[$adn])){
407 $dn = $adn;
408 if (isset($ACL_CACHE["$dn+$object+$attribute"])){
409 $ret = $ACL_CACHE["$dn+$object+$attribute"];
410 if(!isset($ACL_CACHE["$orig_dn+$object+$attribute"])){
411 $ACL_CACHE["$orig_dn+$object+$attribute"] = $ACL_CACHE["$dn+$object+$attribute"];
412 }
413 if($skip_write){
414 $ret = str_replace('w','',$ret);
415 }
416 return($ret);
417 }
418 }
420 /* Get ldap object, for later filter checks
421 */
422 $ldap = $this->config->get_ldap_link();
424 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
426 /* Build dn array */
427 $path= explode(',', $dn);
428 $path= array_reverse($path);
430 /* Walk along the path to evaluate the acl */
431 $cpath= "";
432 foreach ($path as $element){
434 /* Clean potential ACLs for each level */
435 if(isset($this->config->idepartments[$cpath])){
436 $acl= $this->cleanACL($acl);
437 }
439 if ($cpath == ""){
440 $cpath= $element;
441 } else {
442 $cpath= $element.','.$cpath;
443 }
445 if (isset($ACL[$cpath])){
447 /* Inspect this ACL, place the result into ACL */
448 foreach ($ACL[$cpath] as $subacl){
450 /* Reset? Just clean the ACL and turn over to the next one... */
451 if ($subacl['type'] == 'reset'){
452 $acl= $this->cleanACL($acl, TRUE);
453 continue;
454 }
456 if($subacl['type'] == "role") {
457 echo "role skipped";
458 continue;
459 }
461 /* With user filter */
462 if (isset($subacl['filter']) && !empty($subacl['filter'])){
463 $id = $dn."-".$subacl['filter'];
464 if(!isset($ACL_CACHE['FILTER'][$id])){
465 $ACL_CACHE['FILTER'][$id] = $ldap->object_match_filter($dn,$subacl['filter']);
466 }
467 if(!$ACL_CACHE['FILTER'][$id]){
468 continue;
469 }
470 }
472 /* Self ACLs?
473 */
474 if($dn != $this->dn && isset($subacl['acl'][$object][0]) && (strpos($subacl['acl'][$object][0],"s") !== FALSE)){
475 continue;
476 }
478 /* If attribute is "", we want to know, if we've *any* permissions here...
479 Merge global class ACLs [0] with attributes specific ACLs [attribute].
480 */
481 if ($attribute == "" && isset($subacl['acl'][$object])){
482 foreach($subacl['acl'][$object] as $attr => $dummy){
483 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
484 }
485 continue;
486 }
488 /* Per attribute ACL? */
489 if (isset($subacl['acl'][$object][$attribute])){
490 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attribute]);
491 continue;
492 }
494 /* Per object ACL? */
495 if (isset($subacl['acl'][$object][0])){
496 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][0]);
497 continue;
498 }
500 /* Global ACL? */
501 if (isset($subacl['acl']['all'][0])){
502 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']['all'][0]);
503 continue;
504 }
506 /* Category ACLs (e.g. $object = "user/0")
507 */
508 if(strstr($object,"/0")){
509 $ocs = preg_replace("/\/0$/","",$object);
510 if(isset($this->ocMapping[$ocs])){
512 /* if $attribute is "", then check every single attribute for this object.
513 if it is 0, then just check the object category ACL.
514 */
515 if($attribute == ""){
516 foreach($this->ocMapping[$ocs] as $oc){
517 if (isset($subacl['acl'][$ocs.'/'.$oc])){
519 if($dn != $this->dn && strpos($subacl['acl'][$ocs.'/'.$oc][0],"s") !== FALSE) continue;
521 foreach($subacl['acl'][$ocs.'/'.$oc] as $attr => $dummy){
522 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$ocs.'/'.$oc][$attr]);
523 }
524 continue;
525 }
526 }
527 }else{
528 if(isset($subacl['acl'][$ocs.'/'.$oc][0])){
529 if($dn != $this->dn && strpos($subacl['acl'][$ocs.'/'.$oc][0],"s") !== FALSE) continue;
530 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$ocs.'/'.$oc][0]);
531 }
532 }
533 }
534 continue;
535 }
536 }
537 }
538 }
540 /* If the requested ACL is for a container object, then alter
541 ACLs by applying cleanACL a last time.
542 */
543 if(isset($this->config->idepartments[$dn])){
544 $acl = $this->cleanACL($acl);
545 }
547 /* Assemble string */
548 $ret= "";
549 foreach ($acl as $key => $value){
550 if ($value !== ""){
551 $ret.= $key;
552 }
553 }
555 $ACL_CACHE["$dn+$object+$attribute"]= $ret;
556 $ACL_CACHE["$orig_dn+$object+$attribute"]= $ret;
558 /* Remove write if needed */
559 if ($skip_write){
560 $ret = str_replace(array('w','c','d','m'), '',$ret);
561 }
562 return ($ret);
563 }
566 /* Extract all departments that are accessible (direct or 'on the way' to an
567 accessible department) */
568 function get_module_departments($module, $skip_self_acls = FALSE )
569 {
570 /* If we are forced to skip ACLs checks for the current user
571 then return all departments as valid.
572 */
573 if($this->ignore_acl_for_current_user()){
574 return(array_keys($this->config->idepartments));
575 }
577 /* Use cached results if possilbe */
578 $ACL_CACHE = &session::global_get('ACL_CACHE');
580 if(!is_array($module)){
581 $module = array($module);
582 }
584 global $plist;
585 $res = array();
586 foreach($module as $mod){
587 if(isset($ACL_CACHE['MODULE_DEPARTMENTS'][$mod])){
588 $res = array_merge($res,$ACL_CACHE['MODULE_DEPARTMENTS'][$mod]);
589 continue;
590 }
592 $deps = array();
594 /* Search for per object ACLs */
595 foreach($this->ACL as $dn => $infos){
596 foreach($infos as $info){
597 $found = FALSE;
598 if(isset($info['acl'])){
599 foreach($info['acl'] as $cat => $data){
601 /* Skip self acls? */
602 if($skip_self_acls && isset($data['0']) && (strpos($data['0'], "s") !== FALSE)) continue;
603 if(preg_match("/^".preg_quote($mod, '/')."/",$cat)){
604 $found =TRUE;
605 break;
606 }
607 }
608 }
610 if($found && !isset($this->config->idepartments[$dn])){
611 while(!isset($this->config->idepartments[$dn]) && strpos($dn, ",")){
612 $dn = preg_replace("/^[^,]+,/","",$dn);
613 }
614 if(isset($this->config->idepartments[$dn])){
615 $deps[$dn] = $dn;
616 }
617 }
618 }
619 }
621 /* For all gosaDepartments */
622 foreach ($this->config->departments as $dn){
623 if(isset($deps[$dn])) continue;
624 $acl = "";
625 if(strpos($mod, '/')){
626 $acl.= $this->get_permissions($dn,$mod);
627 }else{
628 $acl.= $this->get_category_permissions($dn,$mod,TRUE);
629 }
630 if(!empty($acl)) {
631 $deps[$dn] = $dn;
632 }
633 }
635 $ACL_CACHE['MODULE_DEPARTMENTS'][$mod] = $deps;
636 $res = array_merge($res,$deps);
637 }
639 return (array_values($res));
640 }
643 function mergeACL($acl, $type, $newACL)
644 {
645 $at= array("psub" => "p", "sub" => "s", "one" => "1");
647 if (strpos($newACL, 'w') !== FALSE && strpos($newACL, 'r') === FALSE){
648 $newACL .= "r";
649 }
651 /* Ignore invalid characters */
652 $newACL= preg_replace('/[^rwcdm]/', '', $newACL);
654 foreach(str_split($newACL) as $char){
656 /* Skip "self" ACLs without combination of rwcdm, they have no effect.
657 -self flag without read/write/create/...
658 */
659 if(empty($char)) continue;
661 /* Skip permanent and subtree entries */
662 if (preg_match('/[sp]/', $acl[$char])){
663 continue;
664 }
666 if ($type == "base" && $acl[$char] != 1) {
667 $acl[$char]= 0;
668 } else {
669 $acl[$char]= $at[$type];
670 }
671 }
673 return ($acl);
674 }
677 function cleanACL($acl, $reset= FALSE)
678 {
679 foreach ($acl as $key => $value){
681 /* Continue, if value is empty or permanent */
682 if ($value == "" || $value == "p") {
683 continue;
684 }
686 /* Reset removes everything but 'p' */
687 if ($reset && $value != 'p'){
688 $acl[$key]= "";
689 continue;
690 }
692 /* Decrease tree level */
693 if (is_int($value)){
694 if ($value){
695 $acl[$key]--;
696 } else {
697 $acl[$key]= "";
698 }
699 }
700 }
702 return ($acl);
703 }
706 /* #FIXME This could be logical wrong or could be optimized in the future
707 Return combined acls for a given category.
708 All acls will be combined like boolean AND
709 As example ('rwcdm' + 'rcd' + 'wrm'= 'r')
711 Results will be cached in $this->result_cache.
712 $this->result_cache will be resetted if load_acls is called.
713 */
714 function has_complete_category_acls($dn,$category)
715 {
716 $acl = "rwcdm";
717 $types = "rwcdm";
719 if(!is_string($category)){
720 trigger_error("category must be string");
721 $acl = "";
722 }else{
723 if(!isset($this->result_cache['has_complete_category_acls'][$dn][$category])) {
724 if (isset($this->ocMapping[$category])){
725 foreach($this->ocMapping[$category] as $oc){
727 /* Skip objectClass '0' (e.g. users/0) get_permissions will ever return '' ?? */
728 if($oc == "0") continue;
729 $tmp = $this->get_permissions($dn, $category."/".$oc);
730 for($i = 0, $l= strlen($types); $i < $l; $i++) {
731 if(!preg_match("/".$types[$i]."/",$tmp)){
732 $acl = preg_replace("/".$types[$i]."/","",$acl);
733 }
734 }
735 }
736 }else{
737 if($this->config->get_cfg_value("displayerrors") == "true"){
738 trigger_error("Invalid type of category ".$category);
739 }
740 $acl = "";
741 }
742 $this->result_cache['has_complete_category_acls'][$dn][$category] = $acl;
743 }else{
744 $acl = $this->result_cache['has_complete_category_acls'][$dn][$category];
745 }
746 }
747 return($acl);
748 }
751 /*! \brief Returns TRUE if the current user is configured in IGNORE_ACL=".." in your gosa.conf
752 @param Return Boolean TRUE if we have to skip ACL checks else FALSE.
753 */
754 function ignore_acl_for_current_user()
755 {
756 return($this->ignoreACL);
757 }
760 function loginAllowed()
761 {
762 // Need to check restrictions?
763 if (count($this->restrictions)){
765 // We have restrictions but cannot check them
766 if (!isset($_SERVER['REMOTE_ADDR'])){
767 return false;
768 }
770 // Move to binary...
771 $source= $_SERVER['REMOTE_ADDR'];
772 foreach ($this->restrictions as $restriction) {
774 // Single IP
775 if (preg_match('/^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$/', $restriction)) {
776 if ($source == $restriction){
777 return true;
778 }
779 }
781 // Match with short netmask
782 if (preg_match('/^([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)\/([0-9]+)$/', $restriction, $matches)) {
783 if (isIpInNet($source, $matches[1], long2ip(~(pow(2, (32-$matches[2]))-1)))) {
784 return true;
785 }
786 }
788 // Match with long netmask
789 if (preg_match('/^([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)\/([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)$/', $restriction, $matches)) {
790 if (isIpInNet($source, $matches[1], $matches[2])) {
791 return true;
792 }
793 }
795 }
797 return false;
798 }
800 return true;
801 }
803 }
806 // vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
807 ?>