xref: /dokuwiki/inc/common.php (revision f62ea8a1d1cf10eddeae777b11420624e111b7ea) 
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' => $message);
108    if(function_exists('html_msgarea')){
109      html_msgarea();
110    }else{
111      print "ERROR($lvl) $message";
112    }
113  }
114}
115
116/**
117 * This builds the breadcrumb trail and returns it as array
118 *
119 * @author Andreas Gohr <andi@splitbrain.org>
120 */
121function breadcrumbs(){
122  global $ID;
123  global $ACT;
124  global $conf;
125  $crumbs = $_SESSION[$conf['title']]['bc'];
126
127  //first visit?
128  if (!is_array($crumbs)){
129    $crumbs = array();
130  }
131  //we only save on show and existing wiki documents
132  $file = wikiFN($ID);
133  if($ACT != 'show' || !@file_exists($file)){
134    $_SESSION[$conf['title']]['bc'] = $crumbs;
135    return $crumbs;
136  }
137
138  // page names
139  $name = noNS($ID);
140  if ($conf['useheading']) {
141    // get page title
142    $title = p_get_first_heading($ID);
143    if ($title) {
144      $name = $title;
145    }
146  }
147
148  //remove ID from array
149  if (isset($crumbs[$ID])) {
150    unset($crumbs[$ID]);
151  }
152
153  //add to array
154  $crumbs[$ID] = $name;
155  //reduce size
156  while(count($crumbs) > $conf['breadcrumbs']){
157    array_shift($crumbs);
158  }
159  //save to session
160  $_SESSION[$conf['title']]['bc'] = $crumbs;
161  return $crumbs;
162}
163
164/**
165 * Filter for page IDs
166 *
167 * This is run on a ID before it is outputted somewhere
168 * currently used to replace the colon with something else
169 * on Windows systems and to have proper URL encoding
170 *
171 * Urlencoding is ommitted when the second parameter is false
172 *
173 * @author Andreas Gohr <andi@splitbrain.org>
174 */
175function idfilter($id,$ue=true){
176  global $conf;
177  if ($conf['useslash'] && $conf['userewrite']){
178    $id = strtr($id,':','/');
179  }elseif (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN' &&
180      $conf['userewrite']) {
181    $id = strtr($id,':',';');
182  }
183  if($ue){
184    $id = urlencode($id);
185    $id = str_replace('%3A',':',$id); //keep as colon
186    $id = str_replace('%2F','/',$id); //keep as slash
187  }
188  return $id;
189}
190
191/**
192 * This builds a link to a wikipage
193 *
194 * It handles URL rewriting and adds additional parameter if
195 * given in $more
196 *
197 * @author Andreas Gohr <andi@splitbrain.org>
198 */
199function wl($id='',$more='',$abs=false){
200  global $conf;
201  $more = str_replace(',','&amp;',$more);
202
203  $id    = idfilter($id);
204  if($abs){
205    $xlink = DOKU_URL;
206  }else{
207    $xlink = DOKU_BASE;
208  }
209
210  if($conf['userewrite'] == 2){
211    $xlink .= DOKU_SCRIPT.'/'.$id;
212    if($more) $xlink .= '?'.$more;
213  }elseif($conf['userewrite']){
214    $xlink .= $id;
215    if($more) $xlink .= '?'.$more;
216  }else{
217    $xlink .= DOKU_SCRIPT.'?id='.$id;
218    if($more) $xlink .= '&amp;'.$more;
219  }
220
221  return $xlink;
222}
223
224/**
225 * Just builds a link to a script
226 *
227 * @todo   maybe obsolete
228 * @author Andreas Gohr <andi@splitbrain.org>
229 */
230function script($script='doku.php'){
231#  $link = getBaseURL();
232#  $link .= $script;
233#  return $link;
234  return DOKU_BASE.DOKU_SCRIPT;
235}
236
237/**
238 * Spamcheck against wordlist
239 *
240 * Checks the wikitext against a list of blocked expressions
241 * returns true if the text contains any bad words
242 *
243 * @author Andreas Gohr <andi@splitbrain.org>
244 */
245function checkwordblock(){
246  global $TEXT;
247  global $conf;
248
249  if(!$conf['usewordblock']) return false;
250
251  $blockfile = file(DOKU_INC.'conf/wordblock.conf');
252  //how many lines to read at once (to work around some PCRE limits)
253  if(version_compare(phpversion(),'4.3.0','<')){
254    //old versions of PCRE define a maximum of parenthesises even if no
255    //backreferences are used - the maximum is 99
256    //this is very bad performancewise and may even be too high still
257    $chunksize = 40;
258  }else{
259    //read file in chunks of 600 - this should work around the
260    //MAX_PATTERN_SIZE in modern PCRE
261    $chunksize = 600;
262  }
263  while($blocks = array_splice($blockfile,0,$chunksize)){
264    $re = array();
265    #build regexp from blocks
266    foreach($blocks as $block){
267      $block = preg_replace('/#.*$/','',$block);
268      $block = trim($block);
269      if(empty($block)) continue;
270      $re[]  = $block;
271    }
272    if(preg_match('#('.join('|',$re).')#si',$TEXT)) return true;
273  }
274  return false;
275}
276
277/**
278 * Return the IP of the client
279 *
280 * Honours X-Forwarded-For Proxy Headers
281 *
282 * @author Andreas Gohr <andi@splitbrain.org>
283 */
284function clientIP(){
285  $my = $_SERVER['REMOTE_ADDR'];
286  if($_SERVER['HTTP_X_FORWARDED_FOR']){
287    $my .= ' ('.$_SERVER['HTTP_X_FORWARDED_FOR'].')';
288  }
289  return $my;
290}
291
292/**
293 * Checks if a given page is currently locked.
294 *
295 * removes stale lockfiles
296 *
297 * @author Andreas Gohr <andi@splitbrain.org>
298 */
299function checklock($id){
300  global $conf;
301  $lock = wikiFN($id).'.lock';
302
303  //no lockfile
304  if(!@file_exists($lock)) return false;
305
306  //lockfile expired
307  if((time() - filemtime($lock)) > $conf['locktime']){
308    unlink($lock);
309    return false;
310  }
311
312  //my own lock
313  $ip = io_readFile($lock);
314  if( ($ip == clientIP()) || ($ip == $_SERVER['REMOTE_USER']) ){
315    return false;
316  }
317
318  return $ip;
319}
320
321/**
322 * Lock a page for editing
323 *
324 * @author Andreas Gohr <andi@splitbrain.org>
325 */
326function lock($id){
327  $lock = wikiFN($id).'.lock';
328  if($_SERVER['REMOTE_USER']){
329    io_saveFile($lock,$_SERVER['REMOTE_USER']);
330  }else{
331    io_saveFile($lock,clientIP());
332  }
333}
334
335/**
336 * Unlock a page if it was locked by the user
337 *
338 * @author Andreas Gohr <andi@splitbrain.org>
339 * @return bool true if a lock was removed
340 */
341function unlock($id){
342  $lock = wikiFN($id).'.lock';
343  if(@file_exists($lock)){
344    $ip = io_readFile($lock);
345    if( ($ip == clientIP()) || ($ip == $_SERVER['REMOTE_USER']) ){
346      @unlink($lock);
347      return true;
348    }
349  }
350  return false;
351}
352
353/**
354 * convert line ending to unix format
355 *
356 * @see    formText() for 2crlf conversion
357 * @author Andreas Gohr <andi@splitbrain.org>
358 */
359function cleanText($text){
360  $text = preg_replace("/(\015\012)|(\015)/","\012",$text);
361  return $text;
362}
363
364/**
365 * Prepares text for print in Webforms by encoding special chars.
366 * It also converts line endings to Windows format which is
367 * pseudo standard for webforms.
368 *
369 * @see    cleanText() for 2unix conversion
370 * @author Andreas Gohr <andi@splitbrain.org>
371 */
372function formText($text){
373  $text = preg_replace("/\012/","\015\012",$text);
374  return htmlspecialchars($text);
375}
376
377/**
378 * Returns the specified local text in raw format
379 *
380 * @author Andreas Gohr <andi@splitbrain.org>
381 */
382function rawLocale($id){
383  return io_readFile(localeFN($id));
384}
385
386/**
387 * Returns the raw WikiText
388 *
389 * @author Andreas Gohr <andi@splitbrain.org>
390 */
391function rawWiki($id,$rev=''){
392  return io_readFile(wikiFN($id,$rev));
393}
394
395/**
396 * Returns the raw Wiki Text in three slices.
397 *
398 * The range parameter needs to have the form "from-to"
399 * and gives the range of the section in bytes - no
400 * UTF-8 awareness is needed.
401 * The returned order is prefix, section and suffix.
402 *
403 * @author Andreas Gohr <andi@splitbrain.org>
404 */
405function rawWikiSlices($range,$id,$rev=''){
406  list($from,$to) = split('-',$range,2);
407  $text = io_readFile(wikiFN($id,$rev));
408  if(!$from) $from = 0;
409  if(!$to)   $to   = strlen($text)+1;
410
411  $slices[0] = substr($text,0,$from-1);
412  $slices[1] = substr($text,$from-1,$to-$from);
413  $slices[2] = substr($text,$to);
414
415  return $slices;
416}
417
418/**
419 * Joins wiki text slices
420 *
421 * function to join the text slices with correct lineendings again.
422 * When the pretty parameter is set to true it adds additional empty
423 * lines between sections if needed (used on saving).
424 *
425 * @author Andreas Gohr <andi@splitbrain.org>
426 */
427function con($pre,$text,$suf,$pretty=false){
428
429  if($pretty){
430    if($pre && substr($pre,-1) != "\n") $pre .= "\n";
431    if($suf && substr($text,-1) != "\n") $text .= "\n";
432  }
433
434  if($pre) $pre .= "\n";
435  if($suf) $text .= "\n";
436  return $pre.$text.$suf;
437}
438
439/**
440 * print debug messages
441 *
442 * little function to print the content of a var
443 *
444 * @author Andreas Gohr <andi@splitbrain.org>
445 */
446function dbg($msg,$hidden=false){
447  (!$hidden) ? print '<pre class="dbg">' : print "<!--\n";
448  print_r($msg);
449  (!$hidden) ? print '</pre>' : print "\n-->";
450}
451
452/**
453 * Add's an entry to the changelog
454 *
455 * @author Andreas Gohr <andi@splitbrain.org>
456 */
457function addLogEntry($date,$id,$summary=""){
458  global $conf;
459  $id     = cleanID($id);//FIXME not needed anymore?
460
461  if(!@is_writable($conf['changelog'])){
462    msg($conf['changelog'].' is not writable!',-1);
463    return;
464  }
465
466  if(!$date) $date = time(); //use current time if none supplied
467  $remote = $_SERVER['REMOTE_ADDR'];
468  $user   = $_SERVER['REMOTE_USER'];
469
470  $logline = join("\t",array($date,$remote,$id,$user,$summary))."\n";
471
472  //FIXME: use adjusted io_saveFile instead
473  $fh = fopen($conf['changelog'],'a');
474  if($fh){
475    fwrite($fh,$logline);
476    fclose($fh);
477  }
478}
479
480/**
481 * returns an array of recently changed files using the
482 * changelog
483 * first   : first entry in array returned
484 * num     : return 'num' entries
485 *
486 * @author Andreas Gohr <andi@splitbrain.org>
487 */
488function getRecents($first,$num,$incdel=false){
489  global $conf;
490  $recent = array();
491  $names  = array();
492
493  if(!$num)
494    return $recent;
495
496  if(!@is_readable($conf['changelog'])){
497    msg($conf['changelog'].' is not readable',-1);
498    return $recent;
499  }
500
501  $loglines = file($conf['changelog']);
502  rsort($loglines); //reverse sort on timestamp
503
504  foreach ($loglines as $line){
505    $line = rtrim($line);        //remove newline
506    if(empty($line)) continue;   //skip empty lines
507    $info = split("\t",$line);   //split into parts
508    //add id if not in yet and file still exists and is allowed to read
509    if(!$names[$info[2]] &&
510       (@file_exists(wikiFN($info[2])) || $incdel) &&
511       (auth_quickaclcheck($info[2]) >= AUTH_READ)
512      ){
513      $names[$info[2]] = 1;
514      if(--$first >= 0) continue;  /* skip "first" entries */
515
516      $recent[$info[2]]['date'] = $info[0];
517      $recent[$info[2]]['ip']   = $info[1];
518      $recent[$info[2]]['user'] = $info[3];
519      $recent[$info[2]]['sum']  = $info[4];
520      $recent[$info[2]]['del']  = !@file_exists(wikiFN($info[2]));
521    }
522    if(count($recent) >= $num){
523      break; //finish if enough items found
524    }
525  }
526  return $recent;
527}
528
529/**
530 * gets additonal informations for a certain pagerevison
531 * from the changelog
532 *
533 * @author Andreas Gohr <andi@splitbrain.org>
534 */
535function getRevisionInfo($id,$rev){
536  global $conf;
537
538  if(!$rev) return(null);
539
540  $info = array();
541  if(!@is_readable($conf['changelog'])){
542    msg($conf['changelog'].' is not readable',-1);
543    return $recent;
544  }
545  $loglines = file($conf['changelog']);
546  $loglines = preg_grep("/$rev\t\d+\.\d+\.\d+\.\d+\t$id\t/",$loglines);
547  $loglines = array_reverse($loglines); //reverse sort on timestamp (shouldn't be needed)
548  $line = split("\t",$loglines[0]);
549  $info['date'] = $line[0];
550  $info['ip']   = $line[1];
551  $info['user'] = $line[3];
552  $info['sum']   = $line[4];
553  return $info;
554}
555
556/**
557 * Saves a wikitext by calling io_saveFile
558 *
559 * @author Andreas Gohr <andi@splitbrain.org>
560 */
561function saveWikiText($id,$text,$summary){
562  global $conf;
563  global $lang;
564  umask($conf['umask']);
565  // ignore if no changes were made
566  if($text == rawWiki($id,'')){
567    return;
568  }
569
570  $file = wikiFN($id);
571  $old  = saveOldRevision($id);
572
573  if (empty($text)){
574    // remove empty files
575    @unlink($file);
576    $del = true;
577    //autoset summary on deletion
578    if(empty($summary)) $summary = $lang['deleted'];
579    //remove empty namespaces
580    io_sweepNS($id);
581  }else{
582    // save file (datadir is created in io_saveFile)
583    io_saveFile($file,$text);
584    $del = false;
585  }
586
587  addLogEntry(@filemtime($file),$id,$summary);
588  notify($id,$old,$summary);
589
590  //purge cache on add by updating the purgefile
591  if($conf['purgeonadd'] && (!$old || $del)){
592    io_saveFile($conf['datadir'].'/_cache/purgefile',time());
593  }
594}
595
596/**
597 * moves the current version to the attic and returns its
598 * revision date
599 *
600 * @author Andreas Gohr <andi@splitbrain.org>
601 */
602function saveOldRevision($id){
603	global $conf;
604  umask($conf['umask']);
605  $oldf = wikiFN($id);
606  if(!@file_exists($oldf)) return '';
607  $date = filemtime($oldf);
608  $newf = wikiFN($id,$date);
609  if(substr($newf,-3)=='.gz'){
610    io_saveFile($newf,rawWiki($id));
611  }else{
612    io_makeFileDir($newf);
613    copy($oldf, $newf);
614  }
615  return $date;
616}
617
618/**
619 * Sends a notify mail to the wikiadmin when a page was
620 * changed
621 *
622 * @author Andreas Gohr <andi@splitbrain.org>
623 */
624function notify($id,$rev="",$summary=""){
625  global $lang;
626  global $conf;
627  $hdrs ='';
628  if(empty($conf['notify'])) return; //notify enabled?
629
630  $text = rawLocale('mailtext');
631  $text = str_replace('@DATE@',date($conf['dformat']),$text);
632  $text = str_replace('@BROWSER@',$_SERVER['HTTP_USER_AGENT'],$text);
633  $text = str_replace('@IPADDRESS@',$_SERVER['REMOTE_ADDR'],$text);
634  $text = str_replace('@HOSTNAME@',gethostbyaddr($_SERVER['REMOTE_ADDR']),$text);
635  $text = str_replace('@NEWPAGE@',wl($id,'',true),$text);
636  $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
637  $text = str_replace('@SUMMARY@',$summary,$text);
638  $text = str_replace('@USER@',$_SERVER['REMOTE_USER'],$text);
639
640  if($rev){
641    $subject = $lang['mail_changed'].' '.$id;
642    $text = str_replace('@OLDPAGE@',wl($id,"rev=$rev",true),$text);
643    require_once("inc/DifferenceEngine.php");
644    $df  = new Diff(split("\n",rawWiki($id,$rev)),
645                    split("\n",rawWiki($id)));
646    $dformat = new UnifiedDiffFormatter();
647    $diff    = $dformat->format($df);
648  }else{
649    $subject=$lang['mail_newpage'].' '.$id;
650    $text = str_replace('@OLDPAGE@','none',$text);
651    $diff = rawWiki($id);
652  }
653  $text = str_replace('@DIFF@',$diff,$text);
654
655  mail_send($conf['notify'],$subject,$text,$conf['mailfrom']);
656}
657
658/**
659 * Return a list of available page revisons
660 *
661 * @author Andreas Gohr <andi@splitbrain.org>
662 */
663function getRevisions($id){
664  $revd = dirname(wikiFN($id,'foo'));
665  $revs = array();
666  $clid = cleanID($id);
667  if(strrpos($clid,':')) $clid = substr($clid,strrpos($clid,':')+1); //remove path
668
669  if (is_dir($revd) && $dh = opendir($revd)) {
670    while (($file = readdir($dh)) !== false) {
671      if (is_dir($revd.'/'.$file)) continue;
672      if (preg_match('/^'.$clid.'\.(\d+)\.txt(\.gz)?$/',$file,$match)){
673        $revs[]=$match[1];
674      }
675    }
676    closedir($dh);
677  }
678  rsort($revs);
679  return $revs;
680}
681
682/**
683 * extracts the query from a google referer
684 *
685 * @todo   should be more generic and support yahoo et al
686 * @author Andreas Gohr <andi@splitbrain.org>
687 */
688function getGoogleQuery(){
689  $url = parse_url($_SERVER['HTTP_REFERER']);
690
691  if(!preg_match("#google\.#i",$url['host'])) return '';
692  $query = array();
693  parse_str($url['query'],$query);
694
695  return $query['q'];
696}
697
698/**
699 * Try to set correct locale
700 *
701 * @deprecated No longer used
702 * @author     Andreas Gohr <andi@splitbrain.org>
703 */
704function setCorrectLocale(){
705  global $conf;
706  global $lang;
707
708  $enc = strtoupper($lang['encoding']);
709  foreach ($lang['locales'] as $loc){
710    //try locale
711    if(@setlocale(LC_ALL,$loc)) return;
712    //try loceale with encoding
713    if(@setlocale(LC_ALL,"$loc.$enc")) return;
714  }
715  //still here? try to set from environment
716  @setlocale(LC_ALL,"");
717}
718
719/**
720 * Return the human readable size of a file
721 *
722 * @param       int    $size   A file size
723 * @param       int    $dec    A number of decimal places
724 * @author      Martin Benjamin <b.martin@cybernet.ch>
725 * @author      Aidan Lister <aidan@php.net>
726 * @version     1.0.0
727 */
728function filesize_h($size, $dec = 1){
729  $sizes = array('B', 'KB', 'MB', 'GB');
730  $count = count($sizes);
731  $i = 0;
732
733  while ($size >= 1024 && ($i < $count - 1)) {
734    $size /= 1024;
735    $i++;
736  }
737
738  return round($size, $dec) . ' ' . $sizes[$i];
739}
740
741/**
742 * Run a few sanity checks
743 *
744 * @author Andreas Gohr <andi@splitbrain.org>
745 */
746function getVersion(){
747  //import version string
748  if(@file_exists('VERSION')){
749    //official release
750    return 'Release '.trim(io_readfile('VERSION'));
751  }elseif(is_dir('_darcs')){
752    //darcs checkout
753    $inv = file('_darcs/inventory');
754    $inv = preg_grep('#andi@splitbrain\.org\*\*\d{14}#',$inv);
755    $cur = array_pop($inv);
756    preg_match('#\*\*(\d{4})(\d{2})(\d{2})#',$cur,$matches);
757    return 'Darcs '.$matches[1].'-'.$matches[2].'-'.$matches[3];
758  }else{
759    return 'snapshot?';
760  }
761}
762
763/**
764 * Run a few sanity checks
765 *
766 * @author Andreas Gohr <andi@splitbrain.org>
767 */
768function check(){
769  global $conf;
770  global $INFO;
771
772  msg('DokuWiki version: '.getVersion(),1);
773
774  if(version_compare(phpversion(),'4.3.0','<')){
775    msg('Your PHP version is too old ('.phpversion().' vs. 4.3.+ recommended)',-1);
776  }elseif(version_compare(phpversion(),'4.3.10','<')){
777    msg('Consider upgrading PHP to 4.3.10 or higher for security reasons (your version: '.phpversion().')',0);
778  }else{
779    msg('PHP version '.phpversion(),1);
780  }
781
782  if(is_writable($conf['changelog'])){
783    msg('Changelog is writable',1);
784  }else{
785    msg('Changelog is not writable',-1);
786  }
787
788  if(is_writable($conf['datadir'])){
789    msg('Datadir is writable',1);
790  }else{
791    msg('Datadir is not writable',-1);
792  }
793
794  if(is_writable($conf['olddir'])){
795    msg('Attic is writable',1);
796  }else{
797    msg('Attic is not writable',-1);
798  }
799
800  if(is_writable($conf['mediadir'])){
801    msg('Mediadir is writable',1);
802  }else{
803    msg('Mediadir is not writable',-1);
804  }
805
806  if(is_writable(DOKU_INC.'conf/users.auth.php')){
807    msg('conf/users.auth.php is writable',1);
808  }else{
809    msg('conf/users.auth.php is not writable',0);
810  }
811
812  if(function_exists('mb_strpos')){
813    if(defined('UTF8_NOMBSTRING')){
814      msg('mb_string extension is available but will not be used',0);
815    }else{
816      msg('mb_string extension is available and will be used',1);
817    }
818  }else{
819    msg('mb_string extension not available - PHP only replacements will be used',0);
820  }
821
822  msg('Your current permission for this page is '.$INFO['perm'],0);
823
824  if(is_writable($INFO['filepath'])){
825    msg('The current page is writable by the webserver',0);
826  }else{
827    msg('The current page is not writable by the webserver',0);
828  }
829
830  if($INFO['writable']){
831    msg('The current page is writable by you',0);
832  }else{
833    msg('The current page is not writable you',0);
834  }
835}
836
837
838//Setup VIM: ex: et ts=2 enc=utf-8 :
839