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 }
193 }
195 /* Create an array which represenet all relevant permissions settings
196 per dn.
198 The array will look like this:
200 . ['ou=base'] ['ou=base'] = array(ACLs);
201 .
202 . ['ou=dep1,ou=base']['ou=dep1,ou=base'] = array(ACLs);
203 . ['ou=base'] = array(ACLs);
206 For object located in 'ou=dep1,ou=base' we have to both ACLs,
207 for objects in 'ou=base' we only have to apply on ACL.
208 */
209 $without_self_acl = $all_acl = array();
210 foreach($this->ACL as $dn => $acl){
211 $sdn =$dn;
212 $first= TRUE; // Run at least once
213 while(strpos($dn,",") !== FALSE || $first){
214 $first = FALSE;
215 if(isset($this->ACL[$dn])){
216 $all_acl[$sdn][$dn] = $this->ACL[$dn];
217 $without_self_acl[$sdn][$dn] = $this->ACL[$dn];
218 foreach($without_self_acl[$sdn][$dn] as $acl_id => $acl_set){
220 /* Remember which ACL set has speicial user filter
221 */
222 if(isset($acl_set['filter']{1})){
223 $this->ACLperPath_usesFilter[$sdn] = TRUE;
224 }
226 /* Remove all acl entries which are especially for the current user (self acl)
227 */
228 foreach($acl_set['acl'] as $object => $object_acls){
229 if(isset($object_acls[0]) && strpos($object_acls[0],"s")){
230 unset($without_self_acl[$sdn][$dn][$acl_id]['acl'][$object]);
231 }
232 }
233 }
234 }
235 $dn = preg_replace("/^[^,]*+,/","",$dn);
236 }
237 }
238 $this->ACLperPath =$without_self_acl;
240 /* Append Self entry */
241 $dn = $this->dn;
242 while(strpos($dn,",") && !isset($all_acl[$dn])){
243 $dn = preg_replace("/^[^,]*+,/","",$dn);
244 }
245 if(isset($all_acl[$dn])){
246 $this->ACLperPath[$this->dn] = $all_acl[$dn];
247 }
248 }
251 /* Returns an array containing all target objects we've permssions on.
252 */
253 function get_acl_target_objects()
254 {
255 return(array_keys($this->ACLperPath));
256 }
259 function get_category_permissions($dn, $category, $any_acl = FALSE)
260 {
261 return($this->get_permissions($dn,$category.'/0',""));
262 }
265 /*! \brief Check if the given object (dn) is copyable
266 @param String The object dn
267 @param String The acl category (e.g. users)
268 @param String The acl class (e.g. user)
269 @return Boolean TRUE if the given object is copyable else FALSE
270 */
271 function is_copyable($dn, $object, $class)
272 {
273 return(preg_match("/r/",$this->has_complete_category_acls($dn, $object)));
274 }
277 /*! \brief Check if the given object (dn) is cutable
278 @param String The object dn
279 @param String The acl category (e.g. users)
280 @param String The acl class (e.g. user)
281 @return Boolean TRUE if the given object is cutable else FALSE
282 */
283 function is_cutable($dn, $object, $class)
284 {
285 $remove = preg_match("/d/",$this->get_permissions($dn,$object."/".$class));
286 $read = preg_match("/r/",$this->has_complete_category_acls($dn, $object));
287 return($remove && $read);
288 }
291 /*! \brief Checks if we are allowed to paste an object to the given destination ($dn)
292 @param String The destination dn
293 @param String The acl category (e.g. users)
294 @param String The acl class (e.g. user)
295 @return Boolean TRUE if we are allowed to paste an object.
296 */
297 function is_pasteable($dn, $object)
298 {
299 return(preg_match("/w/",$this->has_complete_category_acls($dn, $object)));
300 }
303 /*! \brief Checks if we are allowed to restore a snapshot for the given dn.
304 @param String The destination dn
305 @param String The acl category (e.g. users)
306 @return Boolean TRUE if we are allowed to restore a snapshot.
307 */
308 function allow_snapshot_restore($dn, $object)
309 {
310 if(!is_array($object)){
311 $object = array($object);
312 }
313 $r = $w = TRUE;
314 foreach($object as $category){
315 $w &= preg_match("/w/",$this->has_complete_category_acls($dn, $category));
316 $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
317 }
318 return($r && $w );
319 }
322 /*! \brief Checks if we are allowed to create a snapshot of the given dn.
323 @param String The source dn
324 @param String The acl category (e.g. users)
325 @return Boolean TRUE if we are allowed to restore a snapshot.
326 */
327 function allow_snapshot_create($dn, $object)
328 {
329 if(!is_array($object)){
330 $object = array($object);
331 }
332 $r = TRUE;
333 foreach($object as $category){
334 $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
335 }
336 return($r) ;
337 }
340 function get_permissions($dn, $object, $attribute= "", $skip_write= FALSE)
341 {
342 /* If we are forced to skip ACLs checks for the current user
343 then return all permissions.
344 */
345 if($this->ignore_acl_for_current_user()){
346 if($skip_write){
347 return("rcdm");
348 }
349 return("rwcdm");
350 }
352 /* Push cache answer? */
353 $ACL_CACHE = &session::global_get('ACL_CACHE');
354 if (isset($ACL_CACHE["$dn+$object+$attribute"])){
355 $ret = $ACL_CACHE["$dn+$object+$attribute"];
356 if($skip_write){
357 $ret = str_replace(array('w','c','d','m'), '',$ret);
358 }
359 return($ret);
360 }
362 /* Check for correct category and class values... */
363 if(strpos($object,'/') !== FALSE){
364 list($aclCategory, $aclClass) = split("/", $object);
365 }else{
366 $aclCategory = $object;
367 }
369 if($this->config->get_cfg_value("displayerrors") == "true"){
370 if(!isset($this->ocMapping[$aclCategory])){
371 trigger_error("Invalid ACL category '".$aclCategory."'! ({$object})");
372 return("");
373 }elseif(isset($aclClass) && !in_array($aclClass, $this->ocMapping[$aclCategory])){
374 trigger_error("Invalid ACL class '".$aclClass."'! ({$object})");
375 return("");
376 }
377 if(isset($aclClass) &&class_available($aclClass)){
378 $plInfo = call_user_func(array($aclClass, 'plInfo'));
379 if(!empty($attribute) && !isset($plInfo['plProvidedAcls'][$attribute])){
380 trigger_error("Invalid ACL attribute '".$attribute."'! ({$object})");
381 return("");
382 }
383 }
384 }
386 /* Detect the set of ACLs we have to check for this object
387 */
388 $adn = $dn;
389 while(!isset($this->ACLperPath[$adn]) && strpos($adn,",") !== FALSE){
390 $adn = preg_replace("/^[^,]*+,/","",$adn);
391 }
392 if(isset($this->ACLperPath[$adn])){
393 $ACL = $this->ACLperPath[$adn];
394 }else{
395 $ACL_CACHE["$dn+$object+$attribute"] = "";
396 return("");
397 }
399 /* If we do not need to respect any user-filter settings
400 we can skip the per object ACL checks.
401 */
402 $orig_dn= $dn;
403 if(!isset($this->ACLperPath_usesFilter[$adn])){
404 $dn = $adn;
405 if (isset($ACL_CACHE["$dn+$object+$attribute"])){
406 $ret = $ACL_CACHE["$dn+$object+$attribute"];
407 if(!isset($ACL_CACHE["$orig_dn+$object+$attribute"])){
408 $ACL_CACHE["$orig_dn+$object+$attribute"] = $ACL_CACHE["$dn+$object+$attribute"];
409 }
410 if($skip_write){
411 $ret = str_replace('w','',$ret);
412 }
413 return($ret);
414 }
415 }
417 /* Get ldap object, for later filter checks
418 */
419 $ldap = $this->config->get_ldap_link();
421 $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
423 /* Build dn array */
424 $path= explode(',', $dn);
425 $path= array_reverse($path);
427 /* Walk along the path to evaluate the acl */
428 $cpath= "";
429 foreach ($path as $element){
431 /* Clean potential ACLs for each level */
432 if(isset($this->config->idepartments[$cpath])){
433 $acl= $this->cleanACL($acl);
434 }
436 if ($cpath == ""){
437 $cpath= $element;
438 } else {
439 $cpath= $element.','.$cpath;
440 }
442 if (isset($ACL[$cpath])){
444 /* Inspect this ACL, place the result into ACL */
445 foreach ($ACL[$cpath] as $subacl){
447 /* Reset? Just clean the ACL and turn over to the next one... */
448 if ($subacl['type'] == 'reset'){
449 $acl= $this->cleanACL($acl, TRUE);
450 continue;
451 }
453 if($subacl['type'] == "role") {
454 echo "role skipped";
455 continue;
456 }
458 /* With user filter */
459 if (isset($subacl['filter']) && !empty($subacl['filter'])){
460 $id = $dn."-".$subacl['filter'];
461 if(!isset($ACL_CACHE['FILTER'][$id])){
462 $ACL_CACHE['FILTER'][$id] = $ldap->object_match_filter($dn,$subacl['filter']);
463 }
464 if(!$ACL_CACHE['FILTER'][$id]){
465 continue;
466 }
467 }
469 /* Self ACLs?
470 */
471 if($dn != $this->dn && isset($subacl['acl'][$object][0]) && (strpos($subacl['acl'][$object][0],"s") !== FALSE)){
472 continue;
473 }
475 /* If attribute is "", we want to know, if we've *any* permissions here...
476 Merge global class ACLs [0] with attributes specific ACLs [attribute].
477 */
478 if ($attribute == "" && isset($subacl['acl'][$object])){
479 foreach($subacl['acl'][$object] as $attr => $dummy){
480 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
481 }
482 continue;
483 }
485 /* Per attribute ACL? */
486 if (isset($subacl['acl'][$object][$attribute])){
487 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attribute]);
488 continue;
489 }
491 /* Per object ACL? */
492 if (isset($subacl['acl'][$object][0])){
493 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][0]);
494 continue;
495 }
497 /* Global ACL? */
498 if (isset($subacl['acl']['all'][0])){
499 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']['all'][0]);
500 continue;
501 }
503 /* Category ACLs (e.g. $object = "user/0")
504 */
505 if(strstr($object,"/0")){
506 $ocs = preg_replace("/\/0$/","",$object);
507 if(isset($this->ocMapping[$ocs])){
509 /* if $attribute is "", then check every single attribute for this object.
510 if it is 0, then just check the object category ACL.
511 */
512 if($attribute == ""){
513 foreach($this->ocMapping[$ocs] as $oc){
514 if (isset($subacl['acl'][$ocs.'/'.$oc])){
516 if($dn != $this->dn && strpos($subacl['acl'][$ocs.'/'.$oc][0],"s") !== FALSE) continue;
518 foreach($subacl['acl'][$ocs.'/'.$oc] as $attr => $dummy){
519 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$ocs.'/'.$oc][$attr]);
520 }
521 continue;
522 }
523 }
524 }else{
525 if(isset($subacl['acl'][$ocs.'/'.$oc][0])){
526 if($dn != $this->dn && strpos($subacl['acl'][$ocs.'/'.$oc][0],"s") !== FALSE) continue;
527 $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$ocs.'/'.$oc][0]);
528 }
529 }
530 }
531 continue;
532 }
533 }
534 }
535 }
537 /* If the requested ACL is for a container object, then alter
538 ACLs by applying cleanACL a last time.
539 */
540 if(isset($this->config->idepartments[$dn])){
541 $acl = $this->cleanACL($acl);
542 }
544 /* Assemble string */
545 $ret= "";
546 foreach ($acl as $key => $value){
547 if ($value !== ""){
548 $ret.= $key;
549 }
550 }
552 $ACL_CACHE["$dn+$object+$attribute"]= $ret;
553 $ACL_CACHE["$orig_dn+$object+$attribute"]= $ret;
555 /* Remove write if needed */
556 if ($skip_write){
557 $ret = str_replace(array('w','c','d','m'), '',$ret);
558 }
559 return ($ret);
560 }
563 /* Extract all departments that are accessible (direct or 'on the way' to an
564 accessible department) */
565 function get_module_departments($module, $skip_self_acls = FALSE )
566 {
567 /* If we are forced to skip ACLs checks for the current user
568 then return all departments as valid.
569 */
570 if($this->ignore_acl_for_current_user()){
571 return(array_keys($this->config->idepartments));
572 }
574 /* Use cached results if possilbe */
575 $ACL_CACHE = &session::global_get('ACL_CACHE');
577 if(!is_array($module)){
578 $module = array($module);
579 }
581 global $plist;
582 $res = array();
583 foreach($module as $mod){
584 if(isset($ACL_CACHE['MODULE_DEPARTMENTS'][$mod])){
585 $res = array_merge($res,$ACL_CACHE['MODULE_DEPARTMENTS'][$mod]);
586 continue;
587 }
589 $deps = array();
591 /* Search for per object ACLs */
592 foreach($this->ACL as $dn => $infos){
593 foreach($infos as $info){
594 $found = FALSE;
595 foreach($info['acl'] as $cat => $data){
597 /* Skip self acls? */
598 if($skip_self_acls && isset($data['0']) && (strpos($data['0'], "s") !== FALSE)) continue;
599 if(preg_match("/^".preg_quote($mod, '/')."/",$cat)){
600 $found =TRUE;
601 break;
602 }
603 }
605 if($found && !isset($this->config->idepartments[$dn])){
606 while(!isset($this->config->idepartments[$dn]) && strpos($dn, ",")){
607 $dn = preg_replace("/^[^,]+,/","",$dn);
608 }
609 if(isset($this->config->idepartments[$dn])){
610 $deps[$dn] = $dn;
611 }
612 }
613 }
614 }
616 /* For all gosaDepartments */
617 foreach ($this->config->departments as $dn){
618 if(isset($deps[$dn])) continue;
619 $acl = "";
620 if(strpos($mod, '/')){
621 $acl.= $this->get_permissions($dn,$mod);
622 }else{
623 $acl.= $this->get_category_permissions($dn,$mod,TRUE);
624 }
625 if(!empty($acl)) {
626 $deps[$dn] = $dn;
627 }
628 }
630 $ACL_CACHE['MODULE_DEPARTMENTS'][$mod] = $deps;
631 $res = array_merge($res,$deps);
632 }
634 return (array_values($res));
635 }
638 function mergeACL($acl, $type, $newACL)
639 {
640 $at= array("psub" => "p", "sub" => "s", "one" => "1");
642 if (strpos($newACL, 'w') !== FALSE && strpos($newACL, 'r') === FALSE){
643 $newACL .= "r";
644 }
646 /* Ignore invalid characters */
647 $newACL= preg_replace('/[^rwcdm]/', '', $newACL);
649 foreach(str_split($newACL) as $char){
651 /* Skip "self" ACLs without combination of rwcdm, they have no effect.
652 -self flag without read/write/create/...
653 */
654 if(empty($char)) continue;
656 /* Skip permanent and subtree entries */
657 if (preg_match('/[sp]/', $acl[$char])){
658 continue;
659 }
661 if ($type == "base" && $acl[$char] != 1) {
662 $acl[$char]= 0;
663 } else {
664 $acl[$char]= $at[$type];
665 }
666 }
668 return ($acl);
669 }
672 function cleanACL($acl, $reset= FALSE)
673 {
674 foreach ($acl as $key => $value){
676 /* Continue, if value is empty or permanent */
677 if ($value == "" || $value == "p") {
678 continue;
679 }
681 /* Reset removes everything but 'p' */
682 if ($reset && $value != 'p'){
683 $acl[$key]= "";
684 continue;
685 }
687 /* Decrease tree level */
688 if (is_int($value)){
689 if ($value){
690 $acl[$key]--;
691 } else {
692 $acl[$key]= "";
693 }
694 }
695 }
697 return ($acl);
698 }
701 /* #FIXME This could be logical wrong or could be optimized in the future
702 Return combined acls for a given category.
703 All acls will be combined like boolean AND
704 As example ('rwcdm' + 'rcd' + 'wrm'= 'r')
706 Results will be cached in $this->result_cache.
707 $this->result_cache will be resetted if load_acls is called.
708 */
709 function has_complete_category_acls($dn,$category)
710 {
711 $acl = "rwcdm";
712 $types = "rwcdm";
714 if(!is_string($category)){
715 trigger_error("category must be string");
716 $acl = "";
717 }else{
718 if(!isset($this->result_cache['has_complete_category_acls'][$dn][$category])) {
719 if (isset($this->ocMapping[$category])){
720 foreach($this->ocMapping[$category] as $oc){
722 /* Skip objectClass '0' (e.g. users/0) get_permissions will ever return '' ?? */
723 if($oc == "0") continue;
724 $tmp = $this->get_permissions($dn, $category."/".$oc);
725 for($i = 0, $l= strlen($types); $i < $l; $i++) {
726 if(!preg_match("/".$types[$i]."/",$tmp)){
727 $acl = preg_replace("/".$types[$i]."/","",$acl);
728 }
729 }
730 }
731 }else{
732 if($this->config->get_cfg_value("displayerrors") == "true"){
733 trigger_error("Invalid type of category ".$category);
734 }
735 $acl = "";
736 }
737 $this->result_cache['has_complete_category_acls'][$dn][$category] = $acl;
738 }else{
739 $acl = $this->result_cache['has_complete_category_acls'][$dn][$category];
740 }
741 }
742 return($acl);
743 }
746 /*! \brief Returns TRUE if the current user is configured in IGNORE_ACL=".." in your gosa.conf
747 @param Return Boolean TRUE if we have to skip ACL checks else FALSE.
748 */
749 function ignore_acl_for_current_user()
750 {
751 return($this->ignoreACL);
752 }
755 function loginAllowed()
756 {
757 // Need to check restrictions?
758 if (count($this->restrictions)){
760 // We have restrictions but cannot check them
761 if (!isset($_SERVER['REMOTE_ADDR'])){
762 return false;
763 }
765 // Move to binary...
766 $source= $_SERVER['REMOTE_ADDR'];
767 foreach ($this->restrictions as $restriction) {
769 // Single IP
770 if (preg_match('/^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$/', $restriction)) {
771 if ($source == $restriction){
772 return true;
773 }
774 }
776 // Match with short netmask
777 if (preg_match('/^([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)\/([0-9]+)$/', $restriction, $matches)) {
778 if (isIpInNet($source, $matches[1], long2ip(~(pow(2, (32-$matches[2]))-1)))) {
779 return true;
780 }
781 }
783 // Match with long netmask
784 if (preg_match('/^([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)\/([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)$/', $restriction, $matches)) {
785 if (isIpInNet($source, $matches[1], $matches[2])) {
786 return true;
787 }
788 }
790 }
792 return false;
793 }
795 return true;
796 }
798 }
801 // vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
802 ?>