xref: /dokuwiki/lib/plugins/acl/admin.php (revision 5b75cd1f5c479ada468fbf62a733c54edad152f1) 
1<?php
2/**
3 * ACL administration functions
4 *
5 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author     Andreas Gohr <andi@splitbrain.org>
7 * @author     Anika Henke <anika@selfthinker.org> (concepts)
8 * @author     Frank Schubert <frank@schokilade.de> (old version)
9 */
10// must be run within Dokuwiki
11if(!defined('DOKU_INC')) die();
12
13if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
14require_once(DOKU_PLUGIN.'admin.php');
15
16/**
17 * All DokuWiki plugins to extend the admin function
18 * need to inherit from this class
19 */
20class admin_plugin_acl extends DokuWiki_Admin_Plugin {
21    var $acl = null;
22    var $ns  = null;
23    var $who = '';
24    var $usersgroups = array();
25    var $specials = array();
26
27    /**
28     * return some info
29     */
30    function getInfo(){
31        return array(
32            'author' => 'Andreas Gohr',
33            'email'  => 'andi@splitbrain.org',
34            'date'   => '2010-01-17',
35            'name'   => 'ACL Manager',
36            'desc'   => 'Manage Page Access Control Lists',
37            'url'    => 'http://dokuwiki.org/plugin:acl',
38        );
39    }
40
41    /**
42     * return prompt for admin menu
43     */
44    function getMenuText($language) {
45        return $this->getLang('admin_acl');
46    }
47
48    /**
49     * return sort order for position in admin menu
50     */
51    function getMenuSort() {
52        return 1;
53    }
54
55    /**
56     * handle user request
57     *
58     * Initializes internal vars and handles modifications
59     *
60     * @author Andreas Gohr <andi@splitbrain.org>
61     */
62    function handle() {
63        global $AUTH_ACL;
64        global $ID;
65        global $auth;
66
67        // fresh 1:1 copy without replacements
68        $AUTH_ACL = file(DOKU_CONF.'acl.auth.php');
69
70
71        // namespace given?
72        if($_REQUEST['ns'] == '*'){
73            $this->ns = '*';
74        }else{
75            $this->ns = cleanID($_REQUEST['ns']);
76        }
77
78        // user or group choosen?
79        $who = trim($_REQUEST['acl_w']);
80        if($_REQUEST['acl_t'] == '__g__' && $who){
81            $this->who = '@'.ltrim($auth->cleanGroup($who),'@');
82        }elseif($_REQUEST['acl_t'] == '__u__' && $who){
83            $this->who = ltrim($auth->cleanUser($who),'@');
84        }elseif($_REQUEST['acl_t'] &&
85                $_REQUEST['acl_t'] != '__u__' &&
86                $_REQUEST['acl_t'] != '__g__'){
87            $this->who = $_REQUEST['acl_t'];
88        }elseif($who){
89            $this->who = $who;
90        }
91
92        // handle modifications
93        if(isset($_REQUEST['cmd']) && checkSecurityToken()){
94
95            // scope for modifications
96            if($this->ns){
97                if($this->ns == '*'){
98                    $scope = '*';
99                }else{
100                    $scope = $this->ns.':*';
101                }
102            }else{
103                $scope = $ID;
104            }
105
106            if(isset($_REQUEST['cmd']['save']) && $scope && $this->who && isset($_REQUEST['acl'])){
107                // handle additions or single modifications
108                $this->_acl_del($scope, $this->who);
109                $this->_acl_add($scope, $this->who, (int) $_REQUEST['acl']);
110            }elseif(isset($_REQUEST['cmd']['del']) && $scope && $this->who){
111                // handle single deletions
112                $this->_acl_del($scope, $this->who);
113            }elseif(isset($_REQUEST['cmd']['update'])){
114                // handle update of the whole file
115                foreach((array) $_REQUEST['del'] as $where => $names){
116                    // remove all rules marked for deletion
117                    foreach($names as $who)
118                        unset($_REQUEST['acl'][$where][$who]);
119                }
120                // prepare lines
121                $lines = array();
122                // keep header
123                foreach($AUTH_ACL as $line){
124                    if($line{0} == '#'){
125                        $lines[] = $line;
126                    }else{
127                        break;
128                    }
129                }
130                // re-add all rules
131                foreach((array) $_REQUEST['acl'] as $where => $opt){
132                    foreach($opt as $who => $perm){
133                        $who = auth_nameencode($who,true);
134                        $lines[] = "$where\t$who\t$perm\n";
135                    }
136                }
137                // save it
138                io_saveFile(DOKU_CONF.'acl.auth.php', join('',$lines));
139            }
140
141            // reload ACL config
142            $AUTH_ACL = file(DOKU_CONF.'acl.auth.php');
143        }
144
145        // initialize ACL array
146        $this->_init_acl_config();
147    }
148
149    /**
150     * ACL Output function
151     *
152     * print a table with all significant permissions for the
153     * current id
154     *
155     * @author  Frank Schubert <frank@schokilade.de>
156     * @author  Andreas Gohr <andi@splitbrain.org>
157     */
158    function html() {
159        global $ID;
160
161        echo '<div id="acl_manager">'.NL;
162        echo '<h1>'.$this->getLang('admin_acl').'</h1>'.NL;
163        echo '<div class="level1">'.NL;
164
165        echo '<div id="acl__tree">'.NL;
166        $this->_html_explorer($_REQUEST['ns']);
167        echo '</div>'.NL;
168
169        echo '<div id="acl__detail">'.NL;
170        $this->_html_detail();
171        echo '</div>'.NL;
172        echo '</div>'.NL;
173
174        echo '<div class="clearer"></div>';
175        echo '<h2>'.$this->getLang('current').'</h2>'.NL;
176        echo '<div class="level2">'.NL;
177        $this->_html_table();
178        echo '</div>'.NL;
179
180        echo '<div class="footnotes"><div class="fn">'.NL;
181        echo '<sup><a id="fn__1" class="fn_bot" name="fn__1" href="#fnt__1">1)</a></sup>'.NL;
182        echo $this->getLang('p_include');
183        echo '</div></div>';
184
185        echo '</div>'.NL;
186    }
187
188    /**
189     * returns array with set options for building links
190     *
191     * @author Andreas Gohr <andi@splitbrain.org>
192     */
193    function _get_opts($addopts=null){
194        global $ID;
195        $opts = array(
196                    'do'=>'admin',
197                    'page'=>'acl',
198                );
199        if($this->ns) $opts['ns'] = $this->ns;
200        if($this->who) $opts['acl_w'] = $this->who;
201
202        if(is_null($addopts)) return $opts;
203        return array_merge($opts, $addopts);
204    }
205
206    /**
207     * Display a tree menu to select a page or namespace
208     *
209     * @author Andreas Gohr <andi@splitbrain.org>
210     */
211    function _html_explorer(){
212        require_once(DOKU_INC.'inc/search.php');
213        global $conf;
214        global $ID;
215        global $lang;
216
217        $dir = $conf['datadir'];
218        $ns  = $this->ns;
219        if(empty($ns)){
220            $ns = dirname(str_replace(':','/',$ID));
221            if($ns == '.') $ns ='';
222        }elseif($ns == '*'){
223            $ns ='';
224        }
225        $ns  = utf8_encodeFN(str_replace(':','/',$ns));
226
227        $data = $this->_get_tree($ns);
228
229        // wrap a list with the root level around the other namespaces
230        $item = array( 'level' => 0, 'id' => '*', 'type' => 'd',
231                   'open' =>'true', 'label' => '['.$lang['mediaroot'].']');
232
233        echo '<ul class="acltree">';
234        echo $this->_html_li_acl($item);
235        echo '<div class="li">';
236        echo $this->_html_list_acl($item);
237        echo '</div>';
238        echo html_buildlist($data,'acl',
239                            array($this,'_html_list_acl'),
240                            array($this,'_html_li_acl'));
241        echo '</li>';
242        echo '</ul>';
243
244    }
245
246    /**
247     * get a combined list of media and page files
248     *
249     * @param string $folder an already converted filesystem folder of the current namespace
250     * @param string $limit  limit the search to this folder
251     */
252    function _get_tree($folder,$limit=''){
253        global $conf;
254
255        // read tree structure from pages and media
256        $data = array();
257        search($data,$conf['datadir'],'search_index',array('ns' => $folder),$limit);
258        $media = array();
259        search($media,$conf['mediadir'],'search_index',array('ns' => $folder, 'nofiles' => true),$limit);
260        $data = array_merge($data,$media);
261        unset($media);
262
263        // combine by sorting and removing duplicates
264        usort($data,array($this,'_tree_sort'));
265        $count = count($data);
266        if($count>0) for($i=1; $i<$count; $i++){
267            if($data[$i]['type'] == 'f') break; // namespaces come first, we're done
268            if($data[$i-1]['id'] == $data[$i]['id']) unset($data[$i]);
269        }
270        return $data;
271    }
272
273    /**
274     * usort callback
275     *
276     * Sorts the combined trees of media and page files
277     */
278    function _tree_sort($a,$b){
279        if($a['type'] == 'd' && $b['type'] == 'f'){
280            return -1;
281        }elseif($a['type'] == 'f' && $b['type'] == 'd'){
282            return 1;
283        }else{
284            return strcmp($a['id'],$b['id']);
285        }
286    }
287
288    /**
289     * Display the current ACL for selected where/who combination with
290     * selectors and modification form
291     *
292     * @author Andreas Gohr <andi@splitbrain.org>
293     */
294    function _html_detail(){
295        global $conf;
296        global $ID;
297
298        echo '<form action="'.wl().'" method="post" accept-charset="utf-8"><div class="no">'.NL;
299
300        echo '<div id="acl__user">';
301        echo $this->getLang('acl_perms').' ';
302        $inl =  $this->_html_select();
303        echo '<input type="text" name="acl_w" class="edit" value="'.(($inl)?'':hsc(ltrim($this->who,'@'))).'" />'.NL;
304        echo '<input type="submit" value="'.$this->getLang('btn_select').'" class="button" />'.NL;
305        echo '</div>'.NL;
306
307        echo '<div id="acl__info">';
308        $this->_html_info();
309        echo '</div>';
310
311        echo '<input type="hidden" name="ns" value="'.hsc($this->ns).'" />'.NL;
312        echo '<input type="hidden" name="id" value="'.hsc($ID).'" />'.NL;
313        echo '<input type="hidden" name="do" value="admin" />'.NL;
314        echo '<input type="hidden" name="page" value="acl" />'.NL;
315        echo '<input type="hidden" name="sectok" value="'.getSecurityToken().'" />'.NL;
316        echo '</div></form>'.NL;
317    }
318
319    /**
320     * Print infos and editor
321     */
322    function _html_info(){
323        global $ID;
324
325        if($this->who){
326            $current = $this->_get_exact_perm();
327
328            // explain current permissions
329            $this->_html_explain($current);
330            // load editor
331            $this->_html_acleditor($current);
332        }else{
333            echo '<p>';
334            if($this->ns){
335                printf($this->getLang('p_choose_ns'),hsc($this->ns));
336            }else{
337                printf($this->getLang('p_choose_id'),hsc($ID));
338            }
339            echo '</p>';
340
341            echo $this->locale_xhtml('help');
342        }
343    }
344
345    /**
346     * Display the ACL editor
347     *
348     * @author Andreas Gohr <andi@splitbrain.org>
349     */
350    function _html_acleditor($current){
351        global $lang;
352
353        echo '<fieldset>';
354        if(is_null($current)){
355            echo '<legend>'.$this->getLang('acl_new').'</legend>';
356        }else{
357            echo '<legend>'.$this->getLang('acl_mod').'</legend>';
358        }
359
360
361        echo $this->_html_checkboxes($current,empty($this->ns),'acl');
362
363        if(is_null($current)){
364            echo '<input type="submit" name="cmd[save]" class="button" value="'.$lang['btn_save'].'" />'.NL;
365        }else{
366            echo '<input type="submit" name="cmd[save]" class="button" value="'.$lang['btn_update'].'" />'.NL;
367            echo '<input type="submit" name="cmd[del]" class="button" value="'.$lang['btn_delete'].'" />'.NL;
368        }
369
370        echo '</fieldset>';
371    }
372
373    /**
374     * Explain the currently set permissions in plain english/$lang
375     *
376     * @author Andreas Gohr <andi@splitbrain.org>
377     */
378    function _html_explain($current){
379        global $ID;
380        global $auth;
381
382        $who = $this->who;
383        $ns  = $this->ns;
384
385        // prepare where to check
386        if($ns){
387            if($ns == '*'){
388                $check='*';
389            }else{
390                $check=$ns.':*';
391            }
392        }else{
393            $check = $ID;
394        }
395
396        // prepare who to check
397        if($who{0} == '@'){
398            $user   = '';
399            $groups = array(ltrim($who,'@'));
400        }else{
401            $user = auth_nameencode($who);
402            $info = $auth->getUserData($user);
403            if($info === false){
404                $groups = array();
405            }else{
406                $groups = $info['grps'];
407            }
408        }
409
410        // check the permissions
411        $perm = auth_aclcheck($check,$user,$groups);
412
413        // build array of named permissions
414        $names = array();
415        if($perm){
416            if($ns){
417                if($perm >= AUTH_DELETE) $names[] = $this->getLang('acl_perm16');
418                if($perm >= AUTH_UPLOAD) $names[] = $this->getLang('acl_perm8');
419                if($perm >= AUTH_CREATE) $names[] = $this->getLang('acl_perm4');
420            }
421            if($perm >= AUTH_EDIT) $names[] = $this->getLang('acl_perm2');
422            if($perm >= AUTH_READ) $names[] = $this->getLang('acl_perm1');
423            $names = array_reverse($names);
424        }else{
425            $names[] = $this->getLang('acl_perm0');
426        }
427
428        // print permission explanation
429        echo '<p>';
430        if($user){
431            if($ns){
432                printf($this->getLang('p_user_ns'),hsc($who),hsc($ns),join(', ',$names));
433            }else{
434                printf($this->getLang('p_user_id'),hsc($who),hsc($ID),join(', ',$names));
435            }
436        }else{
437            if($ns){
438                printf($this->getLang('p_group_ns'),hsc(ltrim($who,'@')),hsc($ns),join(', ',$names));
439            }else{
440                printf($this->getLang('p_group_id'),hsc(ltrim($who,'@')),hsc($ID),join(', ',$names));
441            }
442        }
443        echo '</p>';
444
445        // add note if admin
446        if($perm == AUTH_ADMIN){
447            echo '<p>'.$this->getLang('p_isadmin').'</p>';
448        }elseif(is_null($current)){
449            echo '<p>'.$this->getLang('p_inherited').'</p>';
450        }
451    }
452
453
454    /**
455     * Item formatter for the tree view
456     *
457     * User function for html_buildlist()
458     *
459     * @author Andreas Gohr <andi@splitbrain.org>
460     */
461    function _html_list_acl($item){
462        global $ID;
463        $ret = '';
464        // what to display
465        if($item['label']){
466            $base = $item['label'];
467        }else{
468            $base = ':'.$item['id'];
469            $base = substr($base,strrpos($base,':')+1);
470        }
471
472        // highlight?
473        if( ($item['type']=='d' && $item['id'] == $this->ns) ||
474            ($item['type']!='d' && $item['id'] == $ID)) $cl = ' cur';
475
476        // namespace or page?
477        if($item['type']=='d'){
478            if($item['open']){
479                $img   = DOKU_BASE.'lib/images/minus.gif';
480                $alt   = '&minus;';
481            }else{
482                $img   = DOKU_BASE.'lib/images/plus.gif';
483                $alt   = '+';
484            }
485            $ret .= '<img src="'.$img.'" alt="'.$alt.'" />';
486            $ret .= '<a href="'.wl('',$this->_get_opts(array('ns'=>$item['id'],'sectok'=>getSecurityToken()))).'" class="idx_dir'.$cl.'">';
487            $ret .= $base;
488            $ret .= '</a>';
489        }else{
490            $ret .= '<a href="'.wl('',$this->_get_opts(array('id'=>$item['id'],'ns'=>'','sectok'=>getSecurityToken()))).'" class="wikilink1'.$cl.'">';
491            $ret .= noNS($item['id']);
492            $ret .= '</a>';
493        }
494        return $ret;
495    }
496
497
498    function _html_li_acl($item){
499            return '<li class="level'.$item['level'].'">';
500    }
501
502
503    /**
504     * Get current ACL settings as multidim array
505     *
506     * @author Andreas Gohr <andi@splitbrain.org>
507     */
508    function _init_acl_config(){
509        global $AUTH_ACL;
510        global $conf;
511        $acl_config=array();
512        $usersgroups = array();
513
514        // get special users and groups
515        $this->specials[] = '@ALL';
516        $this->specials[] = '@'.$conf['defaultgroup'];
517        if($conf['manager'] != '!!not set!!'){
518            $this->specials = array_merge($this->specials,
519                                          array_map('trim',
520                                                    explode(',',$conf['manager'])));
521        }
522        $this->specials = array_filter($this->specials);
523        $this->specials = array_unique($this->specials);
524        sort($this->specials);
525
526        foreach($AUTH_ACL as $line){
527            $line = trim(preg_replace('/#.*$/','',$line)); //ignore comments
528            if(!$line) continue;
529
530            $acl = preg_split('/\s+/',$line);
531            //0 is pagename, 1 is user, 2 is acl
532
533            $acl[1] = rawurldecode($acl[1]);
534            $acl_config[$acl[0]][$acl[1]] = $acl[2];
535
536            // store non-special users and groups for later selection dialog
537            $ug = $acl[1];
538            if(in_array($ug,$this->specials)) continue;
539            $usersgroups[] = $ug;
540        }
541
542        $usersgroups = array_unique($usersgroups);
543        sort($usersgroups);
544        ksort($acl_config);
545
546        $this->acl = $acl_config;
547        $this->usersgroups = $usersgroups;
548    }
549
550    /**
551     * Display all currently set permissions in a table
552     *
553     * @author Andreas Gohr <andi@splitbrain.org>
554     */
555    function _html_table(){
556        global $lang;
557        global $ID;
558
559        echo '<form action="'.wl().'" method="post" accept-charset="utf-8"><div class="no">'.NL;
560        if($this->ns){
561            echo '<input type="hidden" name="ns" value="'.hsc($this->ns).'" />'.NL;
562        }else{
563            echo '<input type="hidden" name="id" value="'.hsc($ID).'" />'.NL;
564        }
565        echo '<input type="hidden" name="acl_w" value="'.hsc($this->who).'" />'.NL;
566        echo '<input type="hidden" name="do" value="admin" />'.NL;
567        echo '<input type="hidden" name="page" value="acl" />'.NL;
568        echo '<input type="hidden" name="sectok" value="'.getSecurityToken().'" />'.NL;
569        echo '<table class="inline">';
570        echo '<tr>';
571        echo '<th>'.$this->getLang('where').'</th>';
572        echo '<th>'.$this->getLang('who').'</th>';
573        echo '<th>'.$this->getLang('perm').'<sup><a id="fnt__1" class="fn_top" name="fnt__1" href="#fn__1">1)</a></sup></th>';
574        echo '<th>'.$lang['btn_delete'].'</th>';
575        echo '</tr>';
576        foreach($this->acl as $where => $set){
577            foreach($set as $who => $perm){
578                echo '<tr>';
579                echo '<td>';
580                if(substr($where,-1) == '*'){
581                    echo '<span class="aclns">'.hsc($where).'</span>';
582                    $ispage = false;
583                }else{
584                    echo '<span class="aclpage">'.hsc($where).'</span>';
585                    $ispage = true;
586                }
587                echo '</td>';
588
589                echo '<td>';
590                if($who{0} == '@'){
591                    echo '<span class="aclgroup">'.hsc($who).'</span>';
592                }else{
593                    echo '<span class="acluser">'.hsc($who).'</span>';
594                }
595                echo '</td>';
596
597                echo '<td>';
598                echo $this->_html_checkboxes($perm,$ispage,'acl['.$where.']['.$who.']');
599                echo '</td>';
600
601                echo '<td align="center">';
602                echo '<input type="checkbox" name="del['.hsc($where).'][]" value="'.hsc($who).'" />';
603                echo '</td>';
604                echo '</tr>';
605            }
606        }
607
608        echo '<tr>';
609        echo '<th align="right" colspan="4">';
610        echo '<input type="submit" value="'.$lang['btn_update'].'" name="cmd[update]" class="button" />';
611        echo '</th>';
612        echo '</tr>';
613        echo '</table>';
614        echo '</div></form>'.NL;
615    }
616
617
618    /**
619     * Returns the permission which were set for exactly the given user/group
620     * and page/namespace. Returns null if no exact match is available
621     *
622     * @author Andreas Gohr <andi@splitbrain.org>
623     */
624    function _get_exact_perm(){
625        global $ID;
626        if($this->ns){
627            if($this->ns == '*'){
628                $check = '*';
629            }else{
630                $check = $this->ns.':*';
631            }
632        }else{
633            $check = $ID;
634        }
635
636        if(isset($this->acl[$check][$this->who])){
637            return $this->acl[$check][$this->who];
638        }else{
639            return null;
640        }
641    }
642
643    /**
644     * adds new acl-entry to conf/acl.auth.php
645     *
646     * @author  Frank Schubert <frank@schokilade.de>
647     */
648    function _acl_add($acl_scope, $acl_user, $acl_level){
649        $acl_config = file_get_contents(DOKU_CONF.'acl.auth.php');
650        $acl_user = auth_nameencode($acl_user,true);
651
652        // max level for pagenames is edit
653        if(strpos($acl_scope,'*') === false) {
654            if($acl_level > AUTH_EDIT) $acl_level = AUTH_EDIT;
655        }
656
657
658        $new_acl = "$acl_scope\t$acl_user\t$acl_level\n";
659
660        $new_config = $acl_config.$new_acl;
661
662        return io_saveFile(DOKU_CONF.'acl.auth.php', $new_config);
663    }
664
665    /**
666     * remove acl-entry from conf/acl.auth.php
667     *
668     * @author  Frank Schubert <frank@schokilade.de>
669     */
670    function _acl_del($acl_scope, $acl_user){
671        $acl_config = file(DOKU_CONF.'acl.auth.php');
672        $acl_user = auth_nameencode($acl_user,true);
673
674        $acl_pattern = '^'.preg_quote($acl_scope,'/').'\s+'.$acl_user.'\s+[0-8].*$';
675
676        // save all non!-matching
677        $new_config = preg_grep("/$acl_pattern/", $acl_config, PREG_GREP_INVERT);
678
679        return io_saveFile(DOKU_CONF.'acl.auth.php', join('',$new_config));
680    }
681
682    /**
683     * print the permission radio boxes
684     *
685     * @author  Frank Schubert <frank@schokilade.de>
686     * @author  Andreas Gohr <andi@splitbrain.org>
687     */
688    function _html_checkboxes($setperm,$ispage,$name){
689        global $lang;
690
691        static $label = 0; //number labels
692        $ret = '';
693
694        if($ispage && $setperm > AUTH_EDIT) $perm = AUTH_EDIT;
695
696        foreach(array(AUTH_NONE,AUTH_READ,AUTH_EDIT,AUTH_CREATE,AUTH_UPLOAD,AUTH_DELETE) as $perm){
697            $label += 1;
698
699            //general checkbox attributes
700            $atts = array( 'type'  => 'radio',
701                           'id'    => 'pbox'.$label,
702                           'name'  => $name,
703                           'value' => $perm );
704            //dynamic attributes
705            if(!is_null($setperm) && $setperm == $perm) $atts['checked']  = 'checked';
706            if($ispage && $perm > AUTH_EDIT){
707                $atts['disabled'] = 'disabled';
708                $class = ' class="disabled"';
709            }else{
710                $class = '';
711            }
712
713            //build code
714            $ret .= '<label for="pbox'.$label.'" title="'.$this->getLang('acl_perm'.$perm).'"'.$class.'>';
715            $ret .= '<input '.html_attbuild($atts).' />&nbsp;';
716            $ret .= $this->getLang('acl_perm'.$perm);
717            $ret .= '</label>'.NL;
718        }
719        return $ret;
720    }
721
722    /**
723     * Print a user/group selector (reusing already used users and groups)
724     *
725     * @author  Andreas Gohr <andi@splitbrain.org>
726     */
727    function _html_select(){
728        global $conf;
729        $inlist = false;
730
731        if($this->who &&
732           !in_array($this->who,$this->usersgroups) &&
733           !in_array($this->who,$this->specials)){
734
735            if($this->who{0} == '@'){
736                $gsel = ' selected="selected"';
737            }else{
738                $usel   = ' selected="selected"';
739            }
740        }else{
741            $usel = '';
742            $gsel = '';
743            $inlist = true;
744        }
745
746
747        echo '<select name="acl_t" class="edit">'.NL;
748        echo '  <option value="__g__" class="aclgroup"'.$gsel.'>'.$this->getLang('acl_group').':</option>'.NL;
749        echo '  <option value="__u__"  class="acluser"'.$usel.'>'.$this->getLang('acl_user').':</option>'.NL;
750        echo '  <optgroup label="&nbsp;">'.NL;
751        foreach($this->specials as $ug){
752            if($ug == $this->who){
753                $sel    = ' selected="selected"';
754                $inlist = true;
755            }else{
756                $sel = '';
757            }
758
759            if($ug{0} == '@'){
760                    echo '  <option value="'.hsc($ug).'" class="aclgroup"'.$sel.'>'.hsc($ug).'</option>'.NL;
761            }else{
762                    echo '  <option value="'.hsc($ug).'" class="acluser"'.$sel.'>'.hsc($ug).'</option>'.NL;
763            }
764        }
765        echo '  </optgroup>'.NL;
766        echo '  <optgroup label="&nbsp;">'.NL;
767        foreach($this->usersgroups as $ug){
768            if($ug == $this->who){
769                $sel    = ' selected="selected"';
770                $inlist = true;
771            }else{
772                $sel = '';
773            }
774
775            if($ug{0} == '@'){
776                    echo '  <option value="'.hsc($ug).'" class="aclgroup"'.$sel.'>'.hsc($ug).'</option>'.NL;
777            }else{
778                    echo '  <option value="'.hsc($ug).'" class="acluser"'.$sel.'>'.hsc($ug).'</option>'.NL;
779            }
780        }
781        echo '  </optgroup>'.NL;
782        echo '</select>'.NL;
783        return $inlist;
784    }
785}
786