xref: /dokuwiki/inc/common.php (revision 88f522e9425377c55c77b6a6dad1d5080a2adf75) 
1<?php
2/**
3 * Common DokuWiki functions
4 *
5 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author     Andreas Gohr <andi@splitbrain.org>
7 */
8
9  if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../').'/');
10  require_once(DOKU_INC.'conf/dokuwiki.php');
11  require_once(DOKU_INC.'inc/io.php');
12  require_once(DOKU_INC.'inc/utf8.php');
13  require_once(DOKU_INC.'inc/mail.php');
14  require_once(DOKU_INC.'inc/parserutils.php');
15
16/**
17 * Return info about the current document as associative
18 * array.
19 *
20 * @author Andreas Gohr <andi@splitbrain.org>
21 */
22function pageinfo(){
23  global $ID;
24  global $REV;
25  global $USERINFO;
26  global $conf;
27
28  if($_SERVER['REMOTE_USER']){
29    $info['user']     = $_SERVER['REMOTE_USER'];
30    $info['userinfo'] = $USERINFO;
31    $info['perm']     = auth_quickaclcheck($ID);
32  }else{
33    $info['user']     = '';
34    $info['perm']     = auth_aclcheck($ID,'',null);
35  }
36
37  $info['namespace'] = getNS($ID);
38  $info['locked']    = checklock($ID);
39  $info['filepath']  = realpath(wikiFN($ID,$REV));
40  $info['exists']    = @file_exists($info['filepath']);
41  if($REV && !$info['exists']){
42    //check if current revision was meant
43    $cur = wikiFN($ID);
44    if(@file_exists($cur) && (@filemtime($cur) == $REV)){
45      $info['filepath'] = realpath($cur);
46      $info['exists']   = true;
47      $REV = '';
48    }
49  }
50  $info['rev'] = $REV;
51  if($info['exists']){
52    $info['writable'] = (is_writable($info['filepath']) &&
53                         ($info['perm'] >= AUTH_EDIT));
54  }else{
55    $info['writable'] = ($info['perm'] >= AUTH_CREATE);
56  }
57  $info['editable']  = ($info['writable'] && empty($info['lock']));
58  $info['lastmod']   = @filemtime($info['filepath']);
59
60  //who's the editor
61  if($REV){
62    $revinfo = getRevisionInfo($ID,$REV);
63  }else{
64    $revinfo = getRevisionInfo($ID,$info['lastmod']);
65  }
66  $info['ip']     = $revinfo['ip'];
67  $info['user']   = $revinfo['user'];
68  $info['sum']    = $revinfo['sum'];
69  $info['editor'] = $revinfo['ip'];
70  if($revinfo['user']){
71    $info['editor'] = $revinfo['user'];
72  }else{
73    $info['editor'] = $revinfo['ip'];
74  }
75
76  return $info;
77}
78
79/**
80 * print a message
81 *
82 * If HTTP headers were not sent yet the message is added
83 * to the global message array else it's printed directly
84 * using html_msgarea()
85 *
86 *
87 * Levels can be:
88 *
89 * -1 error
90 *  0 info
91 *  1 success
92 *
93 * @author Andreas Gohr <andi@splitbrain.org>
94 * @see    html_msgarea
95 */
96function msg($message,$lvl=0){
97  global $MSG;
98  $errors[-1] = 'error';
99  $errors[0]  = 'info';
100  $errors[1]  = 'success';
101
102  if(!headers_sent()){
103    if(!isset($MSG)) $MSG = array();
104    $MSG[]=array('lvl' => $errors[$lvl], 'msg' => $message);
105  }else{
106    $MSG = array();
107    $MSG[]=array('lvl' => $errors[$lvl], 'msg' => $message);
108    html_msgarea();
109  }
110}
111
112/**
113 * This builds the breadcrumb trail and returns it as array
114 *
115 * @author Andreas Gohr <andi@splitbrain.org>
116 */
117function breadcrumbs(){
118  global $ID;
119  global $ACT;
120  global $conf;
121  $crumbs = $_SESSION[$conf['title']]['bc'];
122
123  //first visit?
124  if (!is_array($crumbs)){
125    $crumbs = array();
126  }
127  //we only save on show and existing wiki documents
128  $file = wikiFN($ID);
129  if($ACT != 'show' || !@file_exists($file)){
130    $_SESSION[$conf['title']]['bc'] = $crumbs;
131    return $crumbs;
132  }
133
134  // page names
135  $name = noNS($ID);
136  if ($conf['useheading']) {
137    // get page title
138    $title = p_get_first_heading($ID);
139    if ($title) {
140      $name = $title;
141    }
142  }
143
144  //remove ID from array
145  if (isset($crumbs[$ID])) {
146    unset($crumbs[$ID]);
147  }
148
149  //add to array
150  $crumbs[$ID] = $name;
151  //reduce size
152  while(count($crumbs) > $conf['breadcrumbs']){
153    array_shift($crumbs);
154  }
155  //save to session
156  $_SESSION[$conf['title']]['bc'] = $crumbs;
157  return $crumbs;
158}
159
160/**
161 * Filter for page IDs
162 *
163 * This is run on a ID before it is outputted somewhere
164 * currently used to replace the colon with something else
165 * on Windows systems and to have proper URL encoding
166 *
167 * Urlencoding is ommitted when the second parameter is false
168 *
169 * @author Andreas Gohr <andi@splitbrain.org>
170 */
171function idfilter($id,$ue=true){
172  global $conf;
173  if ($conf['useslash'] && $conf['userewrite']){
174    $id = strtr($id,':','/');
175  }elseif (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN' &&
176      $conf['userewrite']) {
177    $id = strtr($id,':',';');
178  }
179  if($ue){
180    $id = urlencode($id);
181    $id = str_replace('%3A',':',$id); //keep as colon
182    $id = str_replace('%2F','/',$id); //keep as slash
183  }
184  return $id;
185}
186
187/**
188 * This builds a link to a wikipage
189 *
190 * It handles URL rewriting and adds additional parameter if
191 * given in $more
192 *
193 * @author Andreas Gohr <andi@splitbrain.org>
194 */
195function wl($id='',$more='',$abs=false){
196  global $conf;
197  $more = str_replace(',','&amp;',$more);
198
199  $id    = idfilter($id);
200  if($abs){
201    $xlink = DOKU_URL;
202  }else{
203    $xlink = DOKU_BASE;
204  }
205
206  if($conf['userewrite'] == 2){
207    $xlink .= DOKU_SCRIPT.'/'.$id;
208    if($more) $xlink .= '?'.$more;
209  }elseif($conf['userewrite']){
210    $xlink .= $id;
211    if($more) $xlink .= '?'.$more;
212  }else{
213    $xlink .= DOKU_SCRIPT.'?id='.$id;
214    if($more) $xlink .= '&amp;'.$more;
215  }
216
217  return $xlink;
218}
219
220/**
221 * Just builds a link to a script
222 *
223 * @todo   maybe obsolete
224 * @author Andreas Gohr <andi@splitbrain.org>
225 */
226function script($script='doku.php'){
227#  $link = getBaseURL();
228#  $link .= $script;
229#  return $link;
230  return DOKU_BASE.DOKU_SCRIPT;
231}
232
233/**
234 * Spamcheck against wordlist
235 *
236 * Checks the wikitext against a list of blocked expressions
237 * returns true if the text contains any bad words
238 *
239 * @author Andreas Gohr <andi@splitbrain.org>
240 */
241function checkwordblock(){
242  global $TEXT;
243  global $conf;
244
245  if(!$conf['usewordblock']) return false;
246
247  $blockfile = file('conf/wordblock.conf');
248  //how many lines to read at once (to work around some PCRE limits)
249  if(version_compare(phpversion(),'4.3.0','<')){
250    //old versions of PCRE define a maximum of parenthesises even if no
251    //backreferences are used - the maximum is 99
252    //this is very bad performancewise and may even be too high still
253    $chunksize = 40;
254  }else{
255    //read file in chunks of 600 - this should work around the
256    //MAX_PATTERN_SIZE in modern PCRE
257    $chunksize = 600;
258  }
259  while($blocks = array_splice($blockfile,0,$chunksize)){
260    $re = array();
261    #build regexp from blocks
262    foreach($blocks as $block){
263      $block = preg_replace('/#.*$/','',$block);
264      $block = trim($block);
265      if(empty($block)) continue;
266      $re[]  = $block;
267    }
268    if(preg_match('#('.join('|',$re).')#si',$TEXT)) return true;
269  }
270  return false;
271}
272
273/**
274 * Return the IP of the client
275 *
276 * Honours X-Forwarded-For Proxy Headers
277 *
278 * @author Andreas Gohr <andi@splitbrain.org>
279 */
280function clientIP(){
281  $my = $_SERVER['REMOTE_ADDR'];
282  if($_SERVER['HTTP_X_FORWARDED_FOR']){
283    $my .= ' ('.$_SERVER['HTTP_X_FORWARDED_FOR'].')';
284  }
285  return $my;
286}
287
288/**
289 * Checks if a given page is currently locked.
290 *
291 * removes stale lockfiles
292 *
293 * @author Andreas Gohr <andi@splitbrain.org>
294 */
295function checklock($id){
296  global $conf;
297  $lock = wikiFN($id).'.lock';
298
299  //no lockfile
300  if(!@file_exists($lock)) return false;
301
302  //lockfile expired
303  if((time() - filemtime($lock)) > $conf['locktime']){
304    unlink($lock);
305    return false;
306  }
307
308  //my own lock
309  $ip = io_readFile($lock);
310  if( ($ip == clientIP()) || ($ip == $_SERVER['REMOTE_USER']) ){
311    return false;
312  }
313
314  return $ip;
315}
316
317/**
318 * Lock a page for editing
319 *
320 * @author Andreas Gohr <andi@splitbrain.org>
321 */
322function lock($id){
323  $lock = wikiFN($id).'.lock';
324  if($_SERVER['REMOTE_USER']){
325    io_saveFile($lock,$_SERVER['REMOTE_USER']);
326  }else{
327    io_saveFile($lock,clientIP());
328  }
329}
330
331/**
332 * Unlock a page if it was locked by the user
333 *
334 * @author Andreas Gohr <andi@splitbrain.org>
335 * @return bool true if a lock was removed
336 */
337function unlock($id){
338  $lock = wikiFN($id).'.lock';
339  if(@file_exists($lock)){
340    $ip = io_readFile($lock);
341    if( ($ip == clientIP()) || ($ip == $_SERVER['REMOTE_USER']) ){
342      @unlink($lock);
343      return true;
344    }
345  }
346  return false;
347}
348
349/**
350 * convert line ending to unix format
351 *
352 * @see    formText() for 2crlf conversion
353 * @author Andreas Gohr <andi@splitbrain.org>
354 */
355function cleanText($text){
356  $text = preg_replace("/(\015\012)|(\015)/","\012",$text);
357  return $text;
358}
359
360/**
361 * Prepares text for print in Webforms by encoding special chars.
362 * It also converts line endings to Windows format which is
363 * pseudo standard for webforms.
364 *
365 * @see    cleanText() for 2unix conversion
366 * @author Andreas Gohr <andi@splitbrain.org>
367 */
368function formText($text){
369  $text = preg_replace("/\012/","\015\012",$text);
370  return htmlspecialchars($text);
371}
372
373/**
374 * Returns the specified local text in raw format
375 *
376 * @author Andreas Gohr <andi@splitbrain.org>
377 */
378function rawLocale($id){
379  return io_readFile(localeFN($id));
380}
381
382/**
383 * Returns the raw WikiText
384 *
385 * @author Andreas Gohr <andi@splitbrain.org>
386 */
387function rawWiki($id,$rev=''){
388  return io_readFile(wikiFN($id,$rev));
389}
390
391/**
392 * Returns the raw Wiki Text in three slices.
393 *
394 * The range parameter needs to have the form "from-to"
395 * and gives the range of the section in bytes - no
396 * UTF-8 awareness is needed.
397 * The returned order is prefix, section and suffix.
398 *
399 * @author Andreas Gohr <andi@splitbrain.org>
400 */
401function rawWikiSlices($range,$id,$rev=''){
402  list($from,$to) = split('-',$range,2);
403  $text = io_readFile(wikiFN($id,$rev));
404  if(!$from) $from = 0;
405  if(!$to)   $to   = strlen($text)+1;
406
407  $slices[0] = substr($text,0,$from-1);
408  $slices[1] = substr($text,$from-1,$to-$from);
409  $slices[2] = substr($text,$to);
410
411  return $slices;
412}
413
414/**
415 * Joins wiki text slices
416 *
417 * function to join the text slices with correct lineendings again.
418 * When the pretty parameter is set to true it adds additional empty
419 * lines between sections if needed (used on saving).
420 *
421 * @author Andreas Gohr <andi@splitbrain.org>
422 */
423function con($pre,$text,$suf,$pretty=false){
424
425  if($pretty){
426    if($pre && substr($pre,-1) != "\n") $pre .= "\n";
427    if($suf && substr($text,-1) != "\n") $text .= "\n";
428  }
429
430  if($pre) $pre .= "\n";
431  if($suf) $text .= "\n";
432  return $pre.$text.$suf;
433}
434
435/**
436 * print debug messages
437 *
438 * little function to print the content of a var
439 *
440 * @author Andreas Gohr <andi@splitbrain.org>
441 */
442function dbg($msg,$hidden=false){
443  (!$hidden) ? print '<pre class="dbg">' : print "<!--\n";
444  print_r($msg);
445  (!$hidden) ? print '</pre>' : print "\n-->";
446}
447
448/**
449 * Add's an entry to the changelog
450 *
451 * @author Andreas Gohr <andi@splitbrain.org>
452 */
453function addLogEntry($date,$id,$summary=""){
454  global $conf;
455  $id     = cleanID($id);//FIXME not needed anymore?
456
457  if(!@is_writable($conf['changelog'])){
458    msg($conf['changelog'].' is not writable!',-1);
459    return;
460  }
461
462  if(!$date) $date = time(); //use current time if none supplied
463  $remote = $_SERVER['REMOTE_ADDR'];
464  $user   = $_SERVER['REMOTE_USER'];
465
466  $logline = join("\t",array($date,$remote,$id,$user,$summary))."\n";
467
468  //FIXME: use adjusted io_saveFile instead
469  $fh = fopen($conf['changelog'],'a');
470  if($fh){
471    fwrite($fh,$logline);
472    fclose($fh);
473  }
474}
475
476/**
477 * returns an array of recently changed files using the
478 * changelog
479 *
480 * @author Andreas Gohr <andi@splitbrain.org>
481 */
482function getRecents($num=0,$incdel=false){
483  global $conf;
484  $recent = array();
485  if(!$num) $num = $conf['recent'];
486
487  if(!@is_readable($conf['changelog'])){
488    msg($conf['changelog'].' is not readable',-1);
489    return $recent;
490  }
491
492  $loglines = file($conf['changelog']);
493  rsort($loglines); //reverse sort on timestamp
494
495  foreach ($loglines as $line){
496    $line = rtrim($line);        //remove newline
497    if(empty($line)) continue;   //skip empty lines
498    $info = split("\t",$line);   //split into parts
499    //add id if not in yet and file still exists and is allowed to read
500    if(!$recent[$info[2]] &&
501       (@file_exists(wikiFN($info[2])) || $incdel) &&
502       (auth_quickaclcheck($info[2]) >= AUTH_READ)
503      ){
504      $recent[$info[2]]['date'] = $info[0];
505      $recent[$info[2]]['ip']   = $info[1];
506      $recent[$info[2]]['user'] = $info[3];
507      $recent[$info[2]]['sum']  = $info[4];
508      $recent[$info[2]]['del']  = !@file_exists(wikiFN($info[2]));
509    }
510    if(count($recent) >= $num){
511      break; //finish if enough items found
512    }
513  }
514  return $recent;
515}
516
517/**
518 * gets additonal informations for a certain pagerevison
519 * from the changelog
520 *
521 * @author Andreas Gohr <andi@splitbrain.org>
522 */
523function getRevisionInfo($id,$rev){
524  global $conf;
525
526  if(!$rev) return(null);
527
528  $info = array();
529  if(!@is_readable($conf['changelog'])){
530    msg($conf['changelog'].' is not readable',-1);
531    return $recent;
532  }
533  $loglines = file($conf['changelog']);
534  $loglines = preg_grep("/$rev\t\d+\.\d+\.\d+\.\d+\t$id\t/",$loglines);
535  rsort($loglines); //reverse sort on timestamp (shouldn't be needed)
536  $line = split("\t",$loglines[0]);
537  $info['date'] = $line[0];
538  $info['ip']   = $line[1];
539  $info['user'] = $line[3];
540  $info['sum']   = $line[4];
541  return $info;
542}
543
544/**
545 * Saves a wikitext by calling io_saveFile
546 *
547 * @author Andreas Gohr <andi@splitbrain.org>
548 */
549function saveWikiText($id,$text,$summary){
550  global $conf;
551  global $lang;
552  umask($conf['umask']);
553  // ignore if no changes were made
554  if($text == rawWiki($id,'')){
555    return;
556  }
557
558  $file = wikiFN($id);
559  $old  = saveOldRevision($id);
560
561  if (empty($text)){
562    // remove empty files
563    @unlink($file);
564    $del = true;
565    //autoset summary on deletion
566    if(empty($summary)) $summary = $lang['deleted'];
567    //remove empty namespaces
568    io_sweepNS($id);
569  }else{
570    // save file (datadir is created in io_saveFile)
571    io_saveFile($file,$text);
572    $del = false;
573  }
574
575  addLogEntry(@filemtime($file),$id,$summary);
576  notify($id,$old,$summary);
577
578  //purge cache on add by updating the purgefile
579  if($conf['purgeonadd'] && (!$old || $del)){
580    io_saveFile($conf['datadir'].'/_cache/purgefile',time());
581  }
582}
583
584/**
585 * moves the current version to the attic and returns its
586 * revision date
587 *
588 * @author Andreas Gohr <andi@splitbrain.org>
589 */
590function saveOldRevision($id){
591	global $conf;
592  umask($conf['umask']);
593  $oldf = wikiFN($id);
594  if(!@file_exists($oldf)) return '';
595  $date = filemtime($oldf);
596  $newf = wikiFN($id,$date);
597  if(substr($newf,-3)=='.gz'){
598    io_saveFile($newf,rawWiki($id));
599  }else{
600    io_makeFileDir($newf);
601    copy($oldf, $newf);
602  }
603  return $date;
604}
605
606/**
607 * Sends a notify mail to the wikiadmin when a page was
608 * changed
609 *
610 * @author Andreas Gohr <andi@splitbrain.org>
611 */
612function notify($id,$rev="",$summary=""){
613  global $lang;
614  global $conf;
615  $hdrs ='';
616  if(empty($conf['notify'])) return; //notify enabled?
617
618  $text = rawLocale('mailtext');
619  $text = str_replace('@DATE@',date($conf['dformat']),$text);
620  $text = str_replace('@BROWSER@',$_SERVER['HTTP_USER_AGENT'],$text);
621  $text = str_replace('@IPADDRESS@',$_SERVER['REMOTE_ADDR'],$text);
622  $text = str_replace('@HOSTNAME@',gethostbyaddr($_SERVER['REMOTE_ADDR']),$text);
623  $text = str_replace('@NEWPAGE@',wl($id,'',true),$text);
624  $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
625  $text = str_replace('@SUMMARY@',$summary,$text);
626  $text = str_replace('@USER@',$_SERVER['REMOTE_USER'],$text);
627
628  if($rev){
629    $subject = $lang['mail_changed'].' '.$id;
630    $text = str_replace('@OLDPAGE@',wl($id,"rev=$rev",true),$text);
631    require_once("inc/DifferenceEngine.php");
632    $df  = new Diff(split("\n",rawWiki($id,$rev)),
633                    split("\n",rawWiki($id)));
634    $dformat = new UnifiedDiffFormatter();
635    $diff    = $dformat->format($df);
636  }else{
637    $subject=$lang['mail_newpage'].' '.$id;
638    $text = str_replace('@OLDPAGE@','none',$text);
639    $diff = rawWiki($id);
640  }
641  $text = str_replace('@DIFF@',$diff,$text);
642
643  mail_send($conf['notify'],$subject,$text,$conf['mailfrom']);
644}
645
646/**
647 * Return a list of available page revisons
648 *
649 * @author Andreas Gohr <andi@splitbrain.org>
650 */
651function getRevisions($id){
652  $revd = dirname(wikiFN($id,'foo'));
653  $revs = array();
654  $clid = cleanID($id);
655  if(strrpos($clid,':')) $clid = substr($clid,strrpos($clid,':')+1); //remove path
656
657  if (is_dir($revd) && $dh = opendir($revd)) {
658    while (($file = readdir($dh)) !== false) {
659      if (is_dir($revd.'/'.$file)) continue;
660      if (preg_match('/^'.$clid.'\.(\d+)\.txt(\.gz)?$/',$file,$match)){
661        $revs[]=$match[1];
662      }
663    }
664    closedir($dh);
665  }
666  rsort($revs);
667  return $revs;
668}
669
670/**
671 * extracts the query from a google referer
672 *
673 * @todo   should be more generic and support yahoo et al
674 * @author Andreas Gohr <andi@splitbrain.org>
675 */
676function getGoogleQuery(){
677  $url = parse_url($_SERVER['HTTP_REFERER']);
678
679  if(!preg_match("#google\.#i",$url['host'])) return '';
680  $query = array();
681  parse_str($url['query'],$query);
682
683  return $query['q'];
684}
685
686/**
687 * Try to set correct locale
688 *
689 * @deprecated No longer used
690 * @author     Andreas Gohr <andi@splitbrain.org>
691 */
692function setCorrectLocale(){
693  global $conf;
694  global $lang;
695
696  $enc = strtoupper($lang['encoding']);
697  foreach ($lang['locales'] as $loc){
698    //try locale
699    if(@setlocale(LC_ALL,$loc)) return;
700    //try loceale with encoding
701    if(@setlocale(LC_ALL,"$loc.$enc")) return;
702  }
703  //still here? try to set from environment
704  @setlocale(LC_ALL,"");
705}
706
707/**
708 * Return the human readable size of a file
709 *
710 * @param       int    $size   A file size
711 * @param       int    $dec    A number of decimal places
712 * @author      Martin Benjamin <b.martin@cybernet.ch>
713 * @author      Aidan Lister <aidan@php.net>
714 * @version     1.0.0
715 */
716function filesize_h($size, $dec = 1){
717  $sizes = array('B', 'KB', 'MB', 'GB');
718  $count = count($sizes);
719  $i = 0;
720
721  while ($size >= 1024 && ($i < $count - 1)) {
722    $size /= 1024;
723    $i++;
724  }
725
726  return round($size, $dec) . ' ' . $sizes[$i];
727}
728
729/**
730 * Run a few sanity checks
731 *
732 * @author Andreas Gohr <andi@splitbrain.org>
733 */
734function getVersion(){
735  //import version string
736  if(@file_exists('VERSION')){
737    //official release
738    return 'Release '.trim(io_readfile('VERSION'));
739  }elseif(is_dir('_darcs')){
740    //darcs checkout
741    $inv = file('_darcs/inventory');
742    $inv = preg_grep('#andi@splitbrain\.org\*\*\d{14}#',$inv);
743    $cur = array_pop($inv);
744    preg_match('#\*\*(\d{4})(\d{2})(\d{2})#',$cur,$matches);
745    return 'Darcs '.$matches[1].'-'.$matches[2].'-'.$matches[3];
746  }else{
747    return 'snapshot?';
748  }
749}
750
751/**
752 * Run a few sanity checks
753 *
754 * @author Andreas Gohr <andi@splitbrain.org>
755 */
756function check(){
757  global $conf;
758  global $INFO;
759
760  msg('DokuWiki version: '.getVersion(),1);
761
762  if(version_compare(phpversion(),'4.3.0','<')){
763    msg('Your PHP version is too old ('.phpversion().' vs. 4.3.+ recommended)',-1);
764  }elseif(version_compare(phpversion(),'4.3.10','<')){
765    msg('Consider upgrading PHP to 4.3.10 or higher for security reasons (your version: '.phpversion().')',0);
766  }else{
767    msg('PHP version '.phpversion(),1);
768  }
769
770  if(is_writable($conf['changelog'])){
771    msg('Changelog is writable',1);
772  }else{
773    msg('Changelog is not writable',-1);
774  }
775
776  if(is_writable($conf['datadir'])){
777    msg('Datadir is writable',1);
778  }else{
779    msg('Datadir is not writable',-1);
780  }
781
782  if(is_writable($conf['olddir'])){
783    msg('Attic is writable',1);
784  }else{
785    msg('Attic is not writable',-1);
786  }
787
788  if(is_writable($conf['mediadir'])){
789    msg('Mediadir is writable',1);
790  }else{
791    msg('Mediadir is not writable',-1);
792  }
793
794  if(is_writable('conf/users.auth')){
795    msg('conf/users.auth is writable',1);
796  }else{
797    msg('conf/users.auth is not writable',0);
798  }
799
800  if(function_exists('mb_strpos')){
801    if(defined('UTF8_NOMBSTRING')){
802      msg('mb_string extension is available but will not be used',0);
803    }else{
804      msg('mb_string extension is available and will be used',1);
805    }
806  }else{
807    msg('mb_string extension not available - PHP only replacements will be used',0);
808  }
809
810  msg('Your current permission for this page is '.$INFO['perm'],0);
811
812  if(is_writable($INFO['filepath'])){
813    msg('The current page is writable by the webserver',0);
814  }else{
815    msg('The current page is not writable by the webserver',0);
816  }
817
818  if($INFO['writable']){
819    msg('The current page is writable by you',0);
820  }else{
821    msg('The current page is not writable you',0);
822  }
823}
824
825
826//Setup VIM: ex: et ts=2 enc=utf-8 :
827