xref: /dokuwiki/inc/media.php (revision 5561f3b1f12112ad598e710e7b531f61c45ef3a5) 
1<?php
2/**
3 * All output and handler function needed for the media management popup
4 *
5 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author     Andreas Gohr <andi@splitbrain.org>
7 */
8
9if(!defined('DOKU_INC')) define('DOKU_INC',fullpath(dirname(__FILE__).'/../').'/');
10if(!defined('NL')) define('NL',"\n");
11
12require_once(DOKU_INC.'inc/html.php');
13require_once(DOKU_INC.'inc/search.php');
14require_once(DOKU_INC.'inc/JpegMeta.php');
15
16/**
17 * Lists pages which currently use a media file selected for deletion
18 *
19 * References uses the same visual as search results and share
20 * their CSS tags except pagenames won't be links.
21 *
22 * @author Matthias Grimm <matthiasgrimm@users.sourceforge.net>
23 */
24function media_filesinuse($data,$id){
25    global $lang;
26    echo '<h1>'.$lang['reference'].' <code>'.hsc(noNS($id)).'</code></h1>';
27    echo '<p>'.hsc($lang['ref_inuse']).'</p>';
28
29    $hidden=0; //count of hits without read permission
30    foreach($data as $row){
31        if(auth_quickaclcheck($row) >= AUTH_READ && isVisiblePage($row)){
32            echo '<div class="search_result">';
33            echo '<span class="mediaref_ref">'.hsc($row).'</span>';
34            echo '</div>';
35        }else
36        $hidden++;
37    }
38    if ($hidden){
39      print '<div class="mediaref_hidden">'.$lang['ref_hidden'].'</div>';
40    }
41}
42
43/**
44 * Handles the saving of image meta data
45 *
46 * @author Andreas Gohr <andi@splitbrain.org>
47 */
48function media_metasave($id,$auth,$data){
49    if($auth < AUTH_UPLOAD) return false;
50    if(!checkSecurityToken()) return false;
51    global $lang;
52    global $conf;
53    $src = mediaFN($id);
54
55    $meta = new JpegMeta($src);
56    $meta->_parseAll();
57
58    foreach($data as $key => $val){
59        $val=trim($val);
60        if(empty($val)){
61            $meta->deleteField($key);
62        }else{
63            $meta->setField($key,$val);
64        }
65    }
66
67    if($meta->save()){
68        if($conf['fperm']) chmod($src, $conf['fperm']);
69        msg($lang['metasaveok'],1);
70        return $id;
71    }else{
72        msg($lang['metasaveerr'],-1);
73        return false;
74    }
75}
76
77/**
78 * Display the form to edit image meta data
79 *
80 * @author Andreas Gohr <andi@splitbrain.org>
81 */
82function media_metaform($id,$auth){
83    if($auth < AUTH_UPLOAD) return false;
84    global $lang;
85
86    // load the field descriptions
87    static $fields = null;
88    if(is_null($fields)){
89        include(DOKU_CONF.'mediameta.php');
90        if(@file_exists(DOKU_CONF.'mediameta.local.php')){
91            include(DOKU_CONF.'mediameta.local.php');
92        }
93    }
94
95    $src = mediaFN($id);
96
97    // output
98    echo '<h1>'.hsc(noNS($id)).'</h1>'.NL;
99    echo '<form action="'.DOKU_BASE.'lib/exe/mediamanager.php" accept-charset="utf-8" method="post" class="meta">'.NL;
100    formSecurityToken();
101    foreach($fields as $key => $field){
102        // get current value
103        $tags = array($field[0]);
104        if(is_array($field[3])) $tags = array_merge($tags,$field[3]);
105        $value = tpl_img_getTag($tags,'',$src);
106        $value = cleanText($value);
107
108        // prepare attributes
109        $p = array();
110        $p['class'] = 'edit';
111        $p['id']    = 'meta__'.$key;
112        $p['name']  = 'meta['.$field[0].']';
113
114        // put label
115        echo '<div class="metafield">';
116        echo '<label for="meta__'.$key.'">';
117        echo ($lang[$field[1]]) ? $lang[$field[1]] : $field[1];
118        echo ':</label>';
119
120        // put input field
121        if($field[2] == 'text'){
122            $p['value'] = $value;
123            $p['type']  = 'text';
124            $att = buildAttributes($p);
125            echo "<input $att/>".NL;
126        }else{
127            $att = buildAttributes($p);
128            echo "<textarea $att rows=\"6\" cols=\"50\">".formText($value).'</textarea>'.NL;
129        }
130        echo '</div>'.NL;
131    }
132    echo '<div class="buttons">'.NL;
133    echo '<input type="hidden" name="img" value="'.hsc($id).'" />'.NL;
134    echo '<input name="do[save]" type="submit" value="'.$lang['btn_save'].
135         '" title="ALT+S" accesskey="s" class="button" />'.NL;
136    echo '<input name="do[cancel]" type="submit" value="'.$lang['btn_cancel'].
137         '" title="ALT+C" accesskey="c" class="button" />'.NL;
138    echo '</div>'.NL;
139    echo '</form>'.NL;
140}
141
142
143/**
144 * Handles media file deletions
145 *
146 * If configured, checks for media references before deletion
147 *
148 * @author Andreas Gohr <andi@splitbrain.org>
149 * @return mixed false on error, true on delete or array with refs
150 */
151function media_delete($id,$auth){
152    if($auth < AUTH_DELETE) return false;
153    if(!checkSecurityToken()) return false;
154    global $conf;
155    global $lang;
156
157    // check for references if needed
158    $mediareferences = array();
159    if($conf['refcheck']){
160        require_once(DOKU_INC.'inc/fulltext.php');
161        $mediareferences = ft_mediause($id,$conf['refshow']);
162    }
163
164    if(!count($mediareferences)){
165        $file = mediaFN($id);
166        if(@unlink($file)){
167            msg(str_replace('%s',noNS($id),$lang['deletesucc']),1);
168            $del = io_sweepNS($id,'mediadir');
169            if($del){
170                // current namespace was removed. redirecting to root ns passing msg along
171                header('Location: '.DOKU_URL.'lib/exe/mediamanager.php?msg1='.
172                        rawurlencode(str_replace('%s',noNS($id),$lang['deletesucc'])));
173                exit;
174            }
175            return true;
176        }
177        //something went wrong
178        msg(str_replace('%s',$file,$lang['deletefail']),-1);
179        return false;
180    }elseif(!$conf['refshow']){
181        msg(str_replace('%s',noNS($id),$lang['mediainuse']),0);
182        return false;
183    }
184
185    return $mediareferences;
186}
187
188/**
189 * Handles media file uploads
190 *
191 * This generates an action event and delegates to _media_upload_action().
192 * Action plugins are allowed to pre/postprocess the uploaded file.
193 * (The triggered event is preventable.)
194 *
195 * Event data:
196 * $data[0]     fn_tmp: the temporary file name (read from $_FILES)
197 * $data[1]     fn: the file name of the uploaded file
198 * $data[2]     id: the future directory id of the uploaded file
199 * $data[3]     imime: the mimetype of the uploaded file
200 *
201 * @triggers MEDIA_UPLOAD_FINISH
202 * @author Andreas Gohr <andi@splitbrain.org>
203 * @author Michael Klier <chi@chimeric.de>
204 * @return mixed false on error, id of the new file on success
205 */
206function media_upload($ns,$auth){
207    if($auth < AUTH_UPLOAD) return false;
208    if(!checkSecurityToken()) return false;
209    require_once(DOKU_INC.'inc/confutils.php');
210    global $lang;
211    global $conf;
212
213    // get file and id
214    $id   = $_POST['id'];
215    $file = $_FILES['upload'];
216    if(empty($id)) $id = $file['name'];
217
218    // check extensions
219    list($fext,$fmime) = mimetype($file['name']);
220    list($iext,$imime) = mimetype($id);
221    if($fext && !$iext){
222        // no extension specified in id - read original one
223        $id   .= '.'.$fext;
224        $imime = $fmime;
225    }elseif($fext && $fext != $iext){
226        // extension was changed, print warning
227        msg(sprintf($lang['mediaextchange'],$fext,$iext));
228    }
229
230    // get filename
231    $id   = cleanID($ns.':'.$id);
232    $fn   = mediaFN($id);
233
234    // get filetype regexp
235    $types = array_keys(getMimeTypes());
236    $types = array_map(create_function('$q','return preg_quote($q,"/");'),$types);
237    $regex = join('|',$types);
238
239    // because a temp file was created already
240    if(preg_match('/\.('.$regex.')$/i',$fn)){
241        //check for overwrite
242        if(@file_exists($fn) && (!$_REQUEST['ow'] || $auth < AUTH_DELETE)){
243            msg($lang['uploadexist'],0);
244            return false;
245        }
246        // check for valid content
247        $ok = media_contentcheck($file['tmp_name'],$imime);
248        if($ok == -1){
249            msg(sprintf($lang['uploadbadcontent'],".$iext"),-1);
250            return false;
251        }elseif($ok == -2){
252            msg($lang['uploadspam'],-1);
253            return false;
254        }elseif($ok == -3){
255            msg($lang['uploadxss'],-1);
256            return false;
257        }
258
259        // prepare event data
260        $data[0] = $file['tmp_name'];
261        $data[1] = $fn;
262        $data[2] = $id;
263        $data[3] = $imime;
264
265        // trigger event
266        return trigger_event('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
267
268    }else{
269        msg($lang['uploadwrong'],-1);
270    }
271    return false;
272}
273
274/**
275 * Callback adapter for media_upload_finish()
276 * @author Michael Klier <chi@chimeric.de>
277 */
278function _media_upload_action($data) {
279    // fixme do further sanity tests of given data?
280    if(is_array($data) && count($data)===4) {
281        return media_upload_finish($data[0], $data[1], $data[2], $data[3]);
282    } else {
283        return false; //callback error
284    }
285}
286
287/**
288 * Saves an uploaded media file
289 *
290 * @author Andreas Gohr <andi@splitbrain.org>
291 * @author Michael Klier <chi@chimeric.de>
292 */
293function media_upload_finish($fn_tmp, $fn, $id, $imime) {
294    global $conf;
295    global $lang;
296
297    // prepare directory
298    io_createNamespace($id, 'media');
299
300    if(move_uploaded_file($fn_tmp, $fn)) {
301        // Set the correct permission here.
302        // Always chmod media because they may be saved with different permissions than expected from the php umask.
303        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
304        chmod($fn, $conf['fmode']);
305        msg($lang['uploadsucc'],1);
306        media_notify($id,$fn,$imime);
307        return $id;
308    }else{
309        msg($lang['uploadfail'],-1);
310    }
311}
312
313/**
314 * This function checks if the uploaded content is really what the
315 * mimetype says it is. We also do spam checking for text types here.
316 *
317 * We need to do this stuff because we can not rely on the browser
318 * to do this check correctly. Yes, IE is broken as usual.
319 *
320 * @author Andreas Gohr <andi@splitbrain.org>
321 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
322 * @fixme  check all 26 magic IE filetypes here?
323 */
324function media_contentcheck($file,$mime){
325    global $conf;
326    if($conf['iexssprotect']){
327        $fh = @fopen($file, 'rb');
328        if($fh){
329            $bytes = fread($fh, 256);
330            fclose($fh);
331            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
332                return -3;
333            }
334        }
335    }
336    if(substr($mime,0,6) == 'image/'){
337        $info = @getimagesize($file);
338        if($mime == 'image/gif' && $info[2] != 1){
339            return -1;
340        }elseif($mime == 'image/jpeg' && $info[2] != 2){
341            return -1;
342        }elseif($mime == 'image/png' && $info[2] != 3){
343            return -1;
344        }
345        # fixme maybe check other images types as well
346    }elseif(substr($mime,0,5) == 'text/'){
347        global $TEXT;
348        $TEXT = io_readFile($file);
349        if(checkwordblock()){
350            return -2;
351        }
352    }
353    return 0;
354}
355
356/**
357 * Send a notify mail on uploads
358 *
359 * @author Andreas Gohr <andi@splitbrain.org>
360 */
361function media_notify($id,$file,$mime){
362    global $lang;
363    global $conf;
364    if(empty($conf['notify'])) return; //notify enabled?
365
366    $text = rawLocale('uploadmail');
367    $text = str_replace('@DATE@',strftime($conf['dformat']),$text);
368    $text = str_replace('@BROWSER@',$_SERVER['HTTP_USER_AGENT'],$text);
369    $text = str_replace('@IPADDRESS@',$_SERVER['REMOTE_ADDR'],$text);
370    $text = str_replace('@HOSTNAME@',gethostbyaddr($_SERVER['REMOTE_ADDR']),$text);
371    $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
372    $text = str_replace('@USER@',$_SERVER['REMOTE_USER'],$text);
373    $text = str_replace('@MIME@',$mime,$text);
374    $text = str_replace('@MEDIA@',ml($id,'',true,'&',true),$text);
375    $text = str_replace('@SIZE@',filesize_h(filesize($file)),$text);
376
377    $from = $conf['mailfrom'];
378    $from = str_replace('@USER@',$_SERVER['REMOTE_USER'],$from);
379    $from = str_replace('@NAME@',$INFO['userinfo']['name'],$from);
380    $from = str_replace('@MAIL@',$INFO['userinfo']['mail'],$from);
381
382    $subject = '['.$conf['title'].'] '.$lang['mail_upload'].' '.$id;
383
384    mail_send($conf['notify'],$subject,$text,$from);
385}
386
387/**
388 * List all files in a given Media namespace
389 */
390function media_filelist($ns,$auth=null,$jump=''){
391    global $conf;
392    global $lang;
393    $ns = cleanID($ns);
394
395    // check auth our self if not given (needed for ajax calls)
396    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
397
398    echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
399
400    if($auth < AUTH_READ){
401        // FIXME: print permission warning here instead?
402        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
403        return;
404    }
405
406    media_uploadform($ns, $auth);
407
408    $dir = utf8_encodeFN(str_replace(':','/',$ns));
409    $data = array();
410    search($data,$conf['mediadir'],'search_media',array('showmsg'=>true),$dir);
411
412    if(!count($data)){
413        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
414        return;
415    }
416
417    foreach($data as $item){
418        media_printfile($item,$auth,$jump);
419    }
420}
421
422/**
423 * Print action links for a file depending on filetype
424 * and available permissions
425 *
426 * @todo contains inline javascript
427 */
428function media_fileactions($item,$auth){
429    global $lang;
430
431    // view button
432    $link = ml($item['id'],'',true);
433    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
434         'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
435
436
437    // no further actions if not writable
438    if(!$item['writable']) return;
439
440    // delete button
441    if($auth >= AUTH_DELETE){
442        $ask  = addslashes($lang['del_confirm']).'\\n';
443        $ask .= addslashes($item['id']);
444
445        echo ' <a href="'.DOKU_BASE.'lib/exe/mediamanager.php?delete='.rawurlencode($item['id']).
446             '&amp;sectok='.getSecurityToken().'" '.
447             'onclick="return confirm(\''.$ask.'\')" onkeypress="return confirm(\''.$ask.'\')">'.
448             '<img src="'.DOKU_BASE.'lib/images/trash.png" alt="'.$lang['btn_delete'].'" '.
449             'title="'.$lang['btn_delete'].'" class="btn" /></a>';
450    }
451
452    // edit button
453    if($auth >= AUTH_UPLOAD && $item['isimg'] && $item['meta']->getField('File.Mime') == 'image/jpeg'){
454        echo ' <a href="'.DOKU_BASE.'lib/exe/mediamanager.php?edit='.rawurlencode($item['id']).'">'.
455             '<img src="'.DOKU_BASE.'lib/images/pencil.png" alt="'.$lang['metaedit'].'" '.
456             'title="'.$lang['metaedit'].'" class="btn" /></a>';
457    }
458
459}
460
461/**
462 * Formats and prints one file in the list
463 */
464function media_printfile($item,$auth,$jump){
465    global $lang;
466    global $conf;
467
468    // Prepare zebra coloring
469    // I always wanted to use this variable name :-D
470    static $twibble = 1;
471    $twibble *= -1;
472    $zebra = ($twibble == -1) ? 'odd' : 'even';
473
474    // Automatically jump to recent action
475    if($jump == $item['id']) {
476        $jump = ' id="scroll__here" ';
477    }else{
478        $jump = '';
479    }
480
481    // Prepare fileicons
482    list($ext,$mime) = mimetype($item['file']);
483    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
484    $class = 'select mediafile mf_'.$class;
485
486    // Prepare filename
487    $file = utf8_decodeFN($item['file']);
488
489    // Prepare info
490    $info = '';
491    if($item['isimg']){
492        $info .= (int) $item['meta']->getField('File.Width');
493        $info .= '&#215;';
494        $info .= (int) $item['meta']->getField('File.Height');
495        $info .= ' ';
496    }
497    $info .= '<i>'.strftime($conf['dformat'],$item['mtime']).'</i>';
498    $info .= ' ';
499    $info .= filesize_h($item['size']);
500
501    // ouput
502    echo '<div class="'.$zebra.'"'.$jump.'>'.NL;
503    echo '<a name="h_'.$item['id'].'" class="'.$class.'">'.$file.'</a> ';
504    echo '<span class="info">('.$info.')</span>'.NL;
505    media_fileactions($item,$auth);
506    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
507    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
508    echo '</div>';
509    if($item['isimg']) media_printimgdetail($item);
510    echo '<div class="clearer"></div>'.NL;
511    echo '</div>'.NL;
512}
513
514/**
515 * Prints a thumbnail and metainfos
516 */
517function media_printimgdetail($item){
518    // prepare thumbnail
519    $w = (int) $item['meta']->getField('File.Width');
520    $h = (int) $item['meta']->getField('File.Height');
521    if($w>120 || $h>120){
522        $ratio = $item['meta']->getResizeRatio(120);
523        $w = floor($w * $ratio);
524        $h = floor($h * $ratio);
525    }
526    $src = ml($item['id'],array('w'=>$w,'h'=>$h));
527    $p = array();
528    $p['width']  = $w;
529    $p['height'] = $h;
530    $p['alt']    = $item['id'];
531    $p['class']  = 'thumb';
532    $att = buildAttributes($p);
533
534    // output
535    echo '<div class="detail">';
536    echo '<div class="thumb">';
537    echo '<a name="d_'.$item['id'].'" class="select">';
538    echo '<img src="'.$src.'" '.$att.' />';
539    echo '</a>';
540    echo '</div>';
541
542    // read EXIF/IPTC data
543    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
544    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
545                                       'EXIF.TIFFImageDescription',
546                                       'EXIF.TIFFUserComment'));
547    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
548    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
549
550    // print EXIF/IPTC data
551    if($t || $d || $k ){
552        echo '<p>';
553        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
554        if($d) echo htmlspecialchars($d).'<br />';
555        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
556        echo '</p>';
557    }
558    echo '</div>';
559}
560
561/**
562 * Print the media upload form if permissions are correct
563 *
564 * @author Andreas Gohr <andi@splitbrain.org>
565 */
566function media_uploadform($ns, $auth){
567    global $lang;
568
569    if($auth < AUTH_UPLOAD) return; //fixme print info on missing permissions?
570
571    // The default HTML upload form
572    $form = new Doku_Form('dw__upload', DOKU_BASE.'lib/exe/mediamanager.php', false, 'multipart/form-data');
573    $form->addElement('<div class="upload">' . $lang['mediaupload'] . '</div>');
574    $form->addElement(formSecurityToken());
575    $form->addHidden('ns', hsc($ns));
576    $form->addElement(form_makeOpenTag('p'));
577    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
578    $form->addElement(form_makeCloseTag('p'));
579    $form->addElement(form_makeOpenTag('p'));
580    $form->addElement(form_makeTextField('id', '', $lang['txt_filename'].':', 'upload__name'));
581    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
582    $form->addElement(form_makeCloseTag('p'));
583
584    if($auth >= AUTH_DELETE){
585      $form->addElement(form_makeOpenTag('p'));
586      $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check'));
587      $form->addElement(form_makeCloseTag('p'));
588    }
589    html_form('upload', $form);
590
591    // prepare flashvars for multiupload
592    $opt = array(
593        'L_gridname'  => $lang['mu_gridname'] ,
594        'L_gridsize'  => $lang['mu_gridsize'] ,
595        'L_gridstat'  => $lang['mu_gridstat'] ,
596        'L_namespace' => $lang['mu_namespace'] ,
597        'L_overwrite' => $lang['txt_overwrt'],
598        'L_browse'    => $lang['mu_browse'],
599        'L_upload'    => $lang['btn_upload'],
600        'L_toobig'    => $lang['mu_toobig'],
601        'L_ready'     => $lang['mu_ready'],
602        'L_done'      => $lang['mu_done'],
603        'L_fail'      => $lang['mu_fail'],
604        'L_authfail'  => $lang['mu_authfail'],
605        'L_progress'  => $lang['mu_progress'],
606        'L_filetypes' => $lang['mu_filetypes'],
607
608        'O_ns'        => ":$ns",
609        'O_backend'   => 'mediamanager.php?'.session_name().'='.session_id(),
610        'O_size'      => php_to_byte(ini_get('upload_max_filesize')),
611        'O_extensions'=> join('|',array_keys(getMimeTypes())),
612        'O_overwrite' => ($auth >= AUTH_DELETE),
613        'O_sectok'    => getSecurityToken(),
614        'O_authtok'   => auth_createToken(),
615    );
616    $var = buildURLparams($opt,'&');
617    // output the flash uploader
618    ?>
619    <div id="dw__flashupload" style="display:none">
620    <div class="upload"><?php echo $lang['mu_intro']?></div>
621    <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="100%" height="100%"
622        codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab">
623        <param name="movie" value="multipleUpload.swf?t=<?=time()?>" />
624        <param name="quality" value="high" />
625        <param name="bgcolor" value="#ffffff" />
626        <param name="FlashVars" value="<?php echo $var?>" />
627        <embed src="multipleUpload.swf?t=<?=time()?>" quality="high" bgcolor="#ffffff"
628            width="100%" height="100%" name="fileUpload" align="middle"
629            play="true" loop="false" quality="high" FlashVars="<?php echo $var?>"
630            allowScriptAccess="sameDomain"
631            type="application/x-shockwave-flash"
632            pluginspage="http://www.macromedia.com/go/getflashplayer">
633        </embed>
634    </object>
635    </div>
636    <?php
637}
638
639/**
640 * Build a tree outline of available media namespaces
641 *
642 * @author Andreas Gohr <andi@splitbrain.org>
643 */
644function media_nstree($ns){
645    global $conf;
646    global $lang;
647
648    // currently selected namespace
649    $ns  = cleanID($ns);
650    if(empty($ns)){
651        $ns = dirname(str_replace(':','/',$ID));
652        if($ns == '.') $ns ='';
653    }
654    $ns  = utf8_encodeFN(str_replace(':','/',$ns));
655
656    $data = array();
657    search($data,$conf['mediadir'],'search_index',array('ns' => $ns, 'nofiles' => true));
658
659    // wrap a list with the root level around the other namespaces
660    $item = array( 'level' => 0, 'id' => '',
661                   'open' =>'true', 'label' => '['.$lang['mediaroot'].']');
662
663    echo '<ul class="idx">';
664    echo media_nstree_li($item);
665    echo media_nstree_item($item);
666    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
667    echo '</li>';
668    echo '</ul>';
669}
670
671/**
672 * Userfunction for html_buildlist
673 *
674 * Prints a media namespace tree item
675 *
676 * @author Andreas Gohr <andi@splitbrain.org>
677 */
678function media_nstree_item($item){
679    $pos   = strrpos($item['id'], ':');
680    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
681    if(!$item['label']) $item['label'] = $label;
682
683    $ret  = '';
684    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
685    $ret .= $item['label'];
686    $ret .= '</a>';
687    return $ret;
688}
689
690/**
691 * Userfunction for html_buildlist
692 *
693 * Prints a media namespace tree item opener
694 *
695 * @author Andreas Gohr <andi@splitbrain.org>
696 */
697function media_nstree_li($item){
698    $class='media level'.$item['level'];
699    if($item['open']){
700        $class .= ' open';
701        $img   = DOKU_BASE.'lib/images/minus.gif';
702        $alt   = '&minus;';
703    }else{
704        $class .= ' closed';
705        $img   = DOKU_BASE.'lib/images/plus.gif';
706        $alt   = '+';
707    }
708    return '<li class="'.$class.'">'.
709           '<img src="'.$img.'" alt="'.$alt.'" />';
710}
711