xref: /dokuwiki/inc/media.php (revision 70c3cc9a17d47d8986cba0805d943c1a68af1740) 
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')) die('meh.');
10if(!defined('NL')) define('NL',"\n");
11
12/**
13 * Lists pages which currently use a media file selected for deletion
14 *
15 * References uses the same visual as search results and share
16 * their CSS tags except pagenames won't be links.
17 *
18 * @author Matthias Grimm <matthiasgrimm@users.sourceforge.net>
19 */
20function media_filesinuse($data,$id){
21    global $lang;
22    echo '<h1>'.$lang['reference'].' <code>'.hsc(noNS($id)).'</code></h1>';
23    echo '<p>'.hsc($lang['ref_inuse']).'</p>';
24
25    $hidden=0; //count of hits without read permission
26    foreach($data as $row){
27        if(auth_quickaclcheck($row) >= AUTH_READ && isVisiblePage($row)){
28            echo '<div class="search_result">';
29            echo '<span class="mediaref_ref">'.hsc($row).'</span>';
30            echo '</div>';
31        }else
32            $hidden++;
33    }
34    if ($hidden){
35        print '<div class="mediaref_hidden">'.$lang['ref_hidden'].'</div>';
36    }
37}
38
39/**
40 * Handles the saving of image meta data
41 *
42 * @author Andreas Gohr <andi@splitbrain.org>
43 * @author Kate Arzamastseva <pshns@ukr.net>
44 */
45function media_metasave($id,$auth,$data){
46    if($auth < AUTH_UPLOAD) return false;
47    if(!checkSecurityToken()) return false;
48    global $lang;
49    global $conf;
50    $src = mediaFN($id);
51
52    $meta = new JpegMeta($src);
53    $meta->_parseAll();
54
55    foreach($data as $key => $val){
56        $val=trim($val);
57        if(empty($val)){
58            $meta->deleteField($key);
59        }else{
60            $meta->setField($key,$val);
61        }
62    }
63
64    $old = @filemtime($src);
65    if(!@file_exists(mediaFN($id, $old)) && @file_exists($src)) {
66        // add old revision to the attic
67        media_saveOldRevision($id);
68    }
69
70    if($meta->save()){
71        if($conf['fperm']) chmod($src, $conf['fperm']);
72
73        $new = @filemtime($src);
74        // add a log entry to the media changelog
75        addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT, $lang['media_meta_edited']);
76
77        msg($lang['metasaveok'],1);
78        return $id;
79    }else{
80        msg($lang['metasaveerr'],-1);
81        return false;
82    }
83}
84
85/**
86 * Display the form to edit image meta data
87 *
88 * @author Andreas Gohr <andi@splitbrain.org>
89 * @author Kate Arzamastseva <pshns@ukr.net>
90 */
91function media_metaform($id,$auth,$fullscreen = false){
92    global $lang, $config_cascade;
93
94    if($auth < AUTH_UPLOAD) {
95        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
96        return false;
97    }
98
99    // load the field descriptions
100    static $fields = null;
101    if(is_null($fields)){
102
103        foreach (array('default','local') as $config_group) {
104            if (empty($config_cascade['mediameta'][$config_group])) continue;
105            foreach ($config_cascade['mediameta'][$config_group] as $config_file) {
106                if(@file_exists($config_file)){
107                    include($config_file);
108                }
109            }
110        }
111    }
112
113    $src = mediaFN($id);
114
115    // output
116    if (!$fullscreen) {
117        echo '<h1>'.hsc(noNS($id)).'</h1>'.NL;
118        echo '<form action="'.DOKU_BASE.'lib/exe/mediamanager.php" accept-charset="utf-8" method="post" class="meta">'.NL;
119    } else {
120        echo '<form action="'.media_managerURL(array('tab_details' => 'view')).
121            '" accept-charset="utf-8" method="post" class="meta">'.NL;
122    }
123    formSecurityToken();
124    foreach($fields as $key => $field){
125        // get current value
126        $tags = array($field[0]);
127        if(is_array($field[3])) $tags = array_merge($tags,$field[3]);
128        $value = tpl_img_getTag($tags,'',$src);
129        $value = cleanText($value);
130
131        // prepare attributes
132        $p = array();
133        $p['class'] = 'edit';
134        $p['id']    = 'meta__'.$key;
135        $p['name']  = 'meta['.$field[0].']';
136
137        // put label
138        echo '<div class="metafield">';
139        echo '<label for="meta__'.$key.'">';
140        echo ($lang[$field[1]]) ? $lang[$field[1]] : $field[1];
141        echo ':</label>';
142
143        // put input field
144        if($field[2] == 'text'){
145            $p['value'] = $value;
146            $p['type']  = 'text';
147            $att = buildAttributes($p);
148            echo "<input $att/>".NL;
149        }else{
150            $att = buildAttributes($p);
151            echo "<textarea $att rows=\"6\" cols=\"50\">".formText($value).'</textarea>'.NL;
152        }
153        echo '</div>'.NL;
154    }
155    echo '<div class="buttons">'.NL;
156    echo '<input type="hidden" name="img" value="'.hsc($id).'" />'.NL;
157    if (!$fullscreen) $do = 'do';
158    else $do = 'mediado';
159    echo '<input name="'.$do.'[save]" type="submit" value="'.$lang['btn_save'].
160        '" title="'.$lang['btn_save'].' [S]" accesskey="s" class="button" />'.NL;
161    if (!$fullscreen)
162    echo '<input name="do[cancel]" type="submit" value="'.$lang['btn_cancel'].
163        '" title="'.$lang['btn_cancel'].' [C]" accesskey="c" class="button" />'.NL;
164    echo '</div>'.NL;
165    echo '</form>'.NL;
166}
167
168/**
169 * Convenience function to check if a media file is still in use
170 *
171 * @author Michael Klier <chi@chimeric.de>
172 */
173function media_inuse($id) {
174    global $conf;
175    $mediareferences = array();
176    if($conf['refcheck']){
177        $mediareferences = ft_mediause($id,$conf['refshow']);
178        if(!count($mediareferences)) {
179            return false;
180        } else {
181            return $mediareferences;
182        }
183    } else {
184        return false;
185    }
186}
187
188define('DOKU_MEDIA_DELETED', 1);
189define('DOKU_MEDIA_NOT_AUTH', 2);
190define('DOKU_MEDIA_INUSE', 4);
191define('DOKU_MEDIA_EMPTY_NS', 8);
192
193/**
194 * Handles media file deletions
195 *
196 * If configured, checks for media references before deletion
197 *
198 * @author Andreas Gohr <andi@splitbrain.org>
199 * @return int One of: 0,
200                       DOKU_MEDIA_DELETED,
201                       DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS,
202                       DOKU_MEDIA_NOT_AUTH,
203                       DOKU_MEDIA_INUSE
204 */
205function media_delete($id,$auth){
206    if($auth < AUTH_DELETE) return DOKU_MEDIA_NOT_AUTH;
207    if(media_inuse($id)) return DOKU_MEDIA_INUSE;
208
209    $file = mediaFN($id);
210
211    // trigger an event - MEDIA_DELETE_FILE
212    $data['id']   = $id;
213    $data['name'] = basename($file);
214    $data['path'] = $file;
215    $data['size'] = (@file_exists($file)) ? filesize($file) : 0;
216
217    $data['unl'] = false;
218    $data['del'] = false;
219    $evt = new Doku_Event('MEDIA_DELETE_FILE',$data);
220    if ($evt->advise_before()) {
221        $data['unl'] = @unlink($file);
222        if($data['unl']){
223            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_DELETE);
224            $data['del'] = io_sweepNS($id,'mediadir');
225        }
226    }
227    $evt->advise_after();
228    unset($evt);
229
230    if($data['unl'] && $data['del']){
231        return DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS;
232    }
233
234    return $data['unl'] ? DOKU_MEDIA_DELETED : 0;
235}
236
237/**
238 * Handles media file uploads
239 *
240 * @author Andreas Gohr <andi@splitbrain.org>
241 * @author Michael Klier <chi@chimeric.de>
242 * @return mixed false on error, id of the new file on success
243 */
244function media_upload($ns,$auth){
245    if(!checkSecurityToken()) return false;
246    global $lang;
247
248    // get file and id
249    $id   = $_POST['id'];
250    $file = $_FILES['upload'];
251    if(empty($id)) $id = $file['name'];
252
253    // check for errors (messages are done in lib/exe/mediamanager.php)
254    if($file['error']) return false;
255
256    // check extensions
257    list($fext,$fmime,$dl) = mimetype($file['name']);
258    list($iext,$imime,$dl) = mimetype($id);
259    if($fext && !$iext){
260        // no extension specified in id - read original one
261        $id   .= '.'.$fext;
262        $imime = $fmime;
263    }elseif($fext && $fext != $iext){
264        // extension was changed, print warning
265        msg(sprintf($lang['mediaextchange'],$fext,$iext));
266    }
267
268    $res = media_save(array('name' => $file['tmp_name'],
269                            'mime' => $imime,
270                            'ext'  => $iext), $ns.':'.$id,
271                      $_REQUEST['ow'], $auth, 'move_uploaded_file');
272    if (is_array($res)) {
273        msg($res[0], $res[1]);
274        return false;
275    }
276    return $res;
277}
278
279/**
280 * This generates an action event and delegates to _media_upload_action().
281 * Action plugins are allowed to pre/postprocess the uploaded file.
282 * (The triggered event is preventable.)
283 *
284 * Event data:
285 * $data[0]     fn_tmp: the temporary file name (read from $_FILES)
286 * $data[1]     fn: the file name of the uploaded file
287 * $data[2]     id: the future directory id of the uploaded file
288 * $data[3]     imime: the mimetype of the uploaded file
289 * $data[4]     overwrite: if an existing file is going to be overwritten
290 *
291 * @triggers MEDIA_UPLOAD_FINISH
292 */
293function media_save($file, $id, $ow, $auth, $move) {
294    if($auth < AUTH_UPLOAD) {
295        return array("You don't have permissions to upload files.", -1);
296    }
297
298    if (!isset($file['mime']) || !isset($file['ext'])) {
299        list($ext, $mime) = mimetype($id);
300        if (!isset($file['mime'])) {
301            $file['mime'] = $mime;
302        }
303        if (!isset($file['ext'])) {
304            $file['ext'] = $ext;
305        }
306    }
307
308    global $lang;
309
310    // get filename
311    $id   = cleanID($id,false,true);
312    $fn   = mediaFN($id);
313
314    // get filetype regexp
315    $types = array_keys(getMimeTypes());
316    $types = array_map(create_function('$q','return preg_quote($q,"/");'),$types);
317    $regex = join('|',$types);
318
319    // because a temp file was created already
320    if(!preg_match('/\.('.$regex.')$/i',$fn)) {
321        return array($lang['uploadwrong'],-1);
322    }
323
324    //check for overwrite
325    $overwrite = @file_exists($fn);
326    if($overwrite && (!$ow || $auth < AUTH_DELETE)) {
327        return array($lang['uploadexist'], 0);
328    }
329    // check for valid content
330    $ok = media_contentcheck($file['name'], $file['mime']);
331    if($ok == -1){
332        return array(sprintf($lang['uploadbadcontent'],'.' . $file['ext']),-1);
333    }elseif($ok == -2){
334        return array($lang['uploadspam'],-1);
335    }elseif($ok == -3){
336        return array($lang['uploadxss'],-1);
337    }
338
339    // prepare event data
340    $data[0] = $file['name'];
341    $data[1] = $fn;
342    $data[2] = $id;
343    $data[3] = $file['mime'];
344    $data[4] = $overwrite;
345    $data[5] = $move;
346
347    // trigger event
348    return trigger_event('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
349}
350
351/**
352 * Callback adapter for media_upload_finish()
353 * @author Michael Klier <chi@chimeric.de>
354 */
355function _media_upload_action($data) {
356    // fixme do further sanity tests of given data?
357    if(is_array($data) && count($data)===6) {
358        return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
359    } else {
360        return false; //callback error
361    }
362}
363
364/**
365 * Saves an uploaded media file
366 *
367 * @author Andreas Gohr <andi@splitbrain.org>
368 * @author Michael Klier <chi@chimeric.de>
369 * @author Kate Arzamastseva <pshns@ukr.net>
370 */
371function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') {
372    global $conf;
373    global $lang;
374
375    $old = @filemtime($fn);
376    if(!@file_exists(mediaFN($id, $old)) && @file_exists($fn)) {
377        // add old revision to the attic if missing
378        media_saveOldRevision($id);
379    }
380
381    // prepare directory
382    io_createNamespace($id, 'media');
383
384    if($move($fn_tmp, $fn)) {
385        $new = @filemtime($fn);
386        // Set the correct permission here.
387        // Always chmod media because they may be saved with different permissions than expected from the php umask.
388        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
389        chmod($fn, $conf['fmode']);
390        msg($lang['uploadsucc'],1);
391        media_notify($id,$fn,$imime);
392        // add a log entry to the media changelog
393        if ($overwrite) {
394            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT);
395        } else {
396            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
397        }
398        return $id;
399    }else{
400        return array($lang['uploadfail'],-1);
401    }
402}
403
404/**
405 * Moves the current version of media file to the media_attic
406 * directory
407 *
408 * @author Kate Arzamastseva <pshns@ukr.net>
409 * @param string $id
410 * @return int - revision date
411 */
412function media_saveOldRevision($id){
413    global $conf;
414    $oldf = mediaFN($id);
415    if(!@file_exists($oldf)) return '';
416    $date = filemtime($oldf);
417    $newf = mediaFN($id,$date);
418    io_makeFileDir($newf);
419    if(copy($oldf, $newf)) {
420        // Set the correct permission here.
421        // Always chmod media because they may be saved with different permissions than expected from the php umask.
422        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
423        chmod($newf, $conf['fmode']);
424    }
425    return $date;
426}
427
428/**
429 * This function checks if the uploaded content is really what the
430 * mimetype says it is. We also do spam checking for text types here.
431 *
432 * We need to do this stuff because we can not rely on the browser
433 * to do this check correctly. Yes, IE is broken as usual.
434 *
435 * @author Andreas Gohr <andi@splitbrain.org>
436 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
437 * @fixme  check all 26 magic IE filetypes here?
438 */
439function media_contentcheck($file,$mime){
440    global $conf;
441    if($conf['iexssprotect']){
442        $fh = @fopen($file, 'rb');
443        if($fh){
444            $bytes = fread($fh, 256);
445            fclose($fh);
446            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
447                return -3;
448            }
449        }
450    }
451    if(substr($mime,0,6) == 'image/'){
452        $info = @getimagesize($file);
453        if($mime == 'image/gif' && $info[2] != 1){
454            return -1;
455        }elseif($mime == 'image/jpeg' && $info[2] != 2){
456            return -1;
457        }elseif($mime == 'image/png' && $info[2] != 3){
458            return -1;
459        }
460        # fixme maybe check other images types as well
461    }elseif(substr($mime,0,5) == 'text/'){
462        global $TEXT;
463        $TEXT = io_readFile($file);
464        if(checkwordblock()){
465            return -2;
466        }
467    }
468    return 0;
469}
470
471/**
472 * Send a notify mail on uploads
473 *
474 * @author Andreas Gohr <andi@splitbrain.org>
475 */
476function media_notify($id,$file,$mime){
477    global $lang;
478    global $conf;
479    global $INFO;
480    if(empty($conf['notify'])) return; //notify enabled?
481
482    $ip = clientIP();
483
484    $text = rawLocale('uploadmail');
485    $text = str_replace('@DATE@',dformat(),$text);
486    $text = str_replace('@BROWSER@',$_SERVER['HTTP_USER_AGENT'],$text);
487    $text = str_replace('@IPADDRESS@',$ip,$text);
488    $text = str_replace('@HOSTNAME@',gethostsbyaddrs($ip),$text);
489    $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
490    $text = str_replace('@USER@',$_SERVER['REMOTE_USER'],$text);
491    $text = str_replace('@MIME@',$mime,$text);
492    $text = str_replace('@MEDIA@',ml($id,'',true,'&',true),$text);
493    $text = str_replace('@SIZE@',filesize_h(filesize($file)),$text);
494
495    $subject = '['.$conf['title'].'] '.$lang['mail_upload'].' '.$id;
496
497    mail_send($conf['notify'],$subject,$text,$conf['mailfrom']);
498}
499
500/**
501 * List all files in a given Media namespace
502 */
503function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false){
504    global $conf;
505    global $lang;
506    $ns = cleanID($ns);
507
508    // check auth our self if not given (needed for ajax calls)
509    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
510
511    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
512
513    if($auth < AUTH_READ){
514        // FIXME: print permission warning here instead?
515        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
516    }else{
517        if (!$fullscreenview) media_uploadform($ns, $auth);
518
519        $dir = utf8_encodeFN(str_replace(':','/',$ns));
520        $data = array();
521        search($data,$conf['mediadir'],'search_media',
522                array('showmsg'=>true,'depth'=>1),$dir);
523
524        if(!count($data)){
525            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
526        }else foreach($data as $item){
527            if (!$fullscreenview) media_printfile($item,$auth,$jump);
528            else if ($fullscreenview == 'thumbs') media_printfile_thumbs($item,$auth,$jump);
529        }
530    }
531    if (!$fullscreenview) media_searchform($ns);
532}
533
534/**
535 * Prints tabs for files list actions
536 *
537 * @author Kate Arzamastseva <pshns@ukr.net>
538 * @param string $selected - opened tab
539 */
540function media_tabs_files($selected=false){
541    global $lang;
542
543    echo '<div class="mediamanager-tabs" id="id-mediamanager-tabs">';
544    $tab = '<a href="'.media_managerURL(array('tab_files' => 'files')).
545        '" rel=".mediamanager-tab-files"';
546    if (!empty($selected) && $selected == 'files') $class = 'files selected';
547    else $class = 'files';
548    $tab .= ' class="'.$class.'" >'.$lang['mediaselect'].'</a>';
549    echo $tab;
550
551    $tab = '<a href="'.media_managerURL(array('tab_files' => 'upload')).
552        '" rel=".mediamanager-tab-upload"';
553    if (!empty($selected) && $selected == 'upload') $class = 'upload selected';
554    else $class = 'upload';
555    $tab .= ' class="'.$class.'" >'.$lang['media_uploadtab'].'</a>';
556    echo $tab;
557
558    $tab = '<a href="'.media_managerURL(array('tab_files' => 'search')).
559        '" rel=".mediamanager-tab-search"';
560    if (!empty($selected) && $selected == 'search') $class = 'search selected';
561    else $class = 'search';
562    $tab .= ' class="'.$class.'" >'.$lang['media_searchtab'].'</a>';
563    echo $tab;
564
565    echo '<div class="clearer"></div>';
566    echo '</div>';
567}
568
569/**
570 * Prints tabs for files details actions
571 *
572 * @author Kate Arzamastseva <pshns@ukr.net>
573 * @param string $selected - opened tab
574 */
575function media_tabs_details($selected=false){
576    global $lang;
577
578    echo '<div class="mediamanager-tabs" id="id-mediamanager-tabs-detail">';
579    $tab = '<a href="'.media_managerURL(array('tab_details' => 'view')).
580        '" rel=".mediamanager-tab-view"';
581    if (!empty($selected) && $selected == 'view') $class = 'view selected';
582    else $class = 'view';
583    $tab .= ' class="'.$class.'" >'.$lang['media_viewtab'].'</a>';
584    echo $tab;
585
586    $tab = '<a href="'.media_managerURL(array('tab_details' => 'edit')).
587        '" rel=".mediamanager-tab-edit"';
588    if (!empty($selected) && $selected == 'edit') $class = 'edit selected';
589    else $class = 'edit';
590    $tab .= ' class="'.$class.'" >'.$lang['media_edittab'].'</a>';
591    echo $tab;
592
593    $tab = '<a href="'.media_managerURL(array('tab_details' => 'history')).
594        '" rel=".mediamanager-tab-history"';
595    if (!empty($selected) && $selected == 'history') $class = 'history selected';
596    else $class = 'history';
597    $tab .= ' class="'.$class.'" >'.$lang['media_historytab'].'</a>';
598    echo $tab;
599
600    echo '<div class="clearer"></div>';
601    echo '</div>';
602}
603
604/**
605 * Prints options for the tab that displays a list of all files
606 *
607 * @author Kate Arzamastseva <pshns@ukr.net>
608 */
609function media_tab_files_options(){
610    global $lang;
611
612    echo '<div class="background-container">';
613    echo '<div id="id-mediamanager-tabs-files" style="display: inline;">';
614    echo '<a href="'.media_managerURL(array('view' => 'thumbs')).'"
615        rel=".mediamanager-files-thumbnails-tab" class="mediamanager-link-thumbnails">'.
616        $lang['media_thumbsview'].'</a>';
617    echo '<a href="'.media_managerURL(array('view' => 'list')).'"
618        rel=".mediamanager-files-list-tab" class="mediamanager-link-list"
619        title="View as list">'.$lang['media_listview'].'</a>';
620
621    echo '</div>';
622    echo '<div class="mediamanager-block-sort">'.$lang['media_sort'];
623    //select
624    echo '</div>';
625    echo '<div class="clearer"></div>';
626    echo '</div>';
627}
628
629/**
630 * Prints tab that displays a list of all files
631 *
632 * @author Kate Arzamastseva <pshns@ukr.net>
633 */
634function media_tab_files($ns,$auth=null,$jump='') {
635    global $lang;
636    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
637
638    echo '<div class="mediamanager-tab-files">';
639    media_tab_files_options();
640    echo '<div class="scroll-container">';
641
642    $view = $_REQUEST['view'];
643    if($auth < AUTH_READ){
644        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
645    }else{
646        if ($view == 'list') {
647            echo '<ul class="mediamanager-file-list mediamanager-list" id="id-mediamanager-file-list">';
648        } else {
649            echo '<ul class="mediamanager-file-list mediamanager-thumbs" id="id-mediamanager-file-list">';
650        }
651        media_filelist($ns,$auth,$jump,'thumbs');
652        echo '</ul>';
653    }
654    echo '</div>';
655    echo '</div>';
656}
657
658/**
659 * Prints tab that displays uploading form
660 *
661 * @author Kate Arzamastseva <pshns@ukr.net>
662 */
663function media_tab_upload($ns,$auth=null,$jump='') {
664    global $lang;
665    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
666
667    echo '<div class="mediamanager-tab-upload"">';
668    echo '<div class="background-container">';
669    echo $lang['mediaupload'];
670    echo '</div>';
671
672    echo '<div class="scroll-container">';
673    media_uploadform($ns, $auth, true);
674    echo '</div>';
675    echo '</div>';
676}
677
678/**
679 * Prints tab that displays search form
680 *
681 * @author Kate Arzamastseva <pshns@ukr.net>
682 */
683function media_tab_search($ns,$auth=null) {
684    global $lang;
685
686    $do = $_REQUEST['mediado'];
687    $query = $_REQUEST['q'];
688    if (!$query) $query = '';
689
690    echo '<div class="mediamanager-tab-search">';
691    echo '<div class="background-container">';
692    echo $lang['media_search'];
693    echo'</div>';
694
695    echo '<div class="scroll-container">';
696    media_searchform($ns, $query, true);
697
698    if($do == 'searchlist'){
699        media_searchlist($query,$ns,$auth,true);
700    }
701    echo '</div>';
702    echo '</div>';
703}
704
705/**
706 * Prints tab that displays mediafile details
707 *
708 * @author Kate Arzamastseva <pshns@ukr.net>
709 */
710function media_tab_view($image, $ns, $auth=null) {
711    global $lang, $conf;
712    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
713
714    echo '<div class="mediamanager-tab-detail-view">';
715    echo '<div class="background-container">';
716    echo $image;
717    echo '</div>';
718
719    echo '<div class="scroll-container">';
720    $rev = (int) $_REQUEST['rev'];
721    media_preview($image, $auth, $rev);
722    media_details($image, $auth, $rev);
723    echo '</div>';
724    echo '</div>';
725}
726
727/**
728 * Prints tab that displays form for editing mediafile metadata
729 *
730 * @author Kate Arzamastseva <pshns@ukr.net>
731 */
732function media_tab_edit($image, $ns, $auth=null) {
733    global $lang;
734    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
735
736    echo '<div class="mediamanager-tab-detail-edit">';
737    echo '<div class="background-container">';
738    echo $lang['media_edit'];
739    echo '</div>';
740
741    echo '<div class="scroll-container">';
742    if ($image) {
743        list($ext, $mime) = mimetype($image);
744        if ($mime == 'image/jpeg') media_metaform($image,$auth,true);
745    }
746    echo '</div>';
747    echo '</div>';
748}
749
750/**
751 * Prints tab that displays mediafile revisions
752 *
753 * @author Kate Arzamastseva <pshns@ukr.net>
754 */
755function media_tab_history($image, $ns, $auth=null) {
756    global $lang;
757    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
758    $do = $_REQUEST['mediado'];
759
760    echo '<div class="mediamanager-tab-detail-history">';
761    echo '<div class="background-container">';
762    echo $lang['media_history'];
763    echo '</div>';
764
765    echo '<div class="scroll-container">';
766    if ($auth >= AUTH_READ && $image) {
767        if ($do == 'diff'){
768            media_diff($image, $ns, $auth);
769        } else {
770            $first = isset($_REQUEST['first']) ? intval($_REQUEST['first']) : 0;
771            html_revisions($first, $image);
772        }
773    } else {
774        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
775    }
776    echo '</div>';
777    echo '</div>';
778}
779
780/**
781 * Prints mediafile details
782 *
783 * @author Kate Arzamastseva <pshns@ukr.net>
784 */
785function media_preview($image, $auth, $rev=false) {
786    global $lang;
787    if (!$image) return '';
788    if ($auth < AUTH_READ) {
789        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
790        return '';
791    }
792    $info = getimagesize(mediaFN($image));
793    $w = (int) $info[0];
794
795    $more = '';
796    if ($rev) $more = "rev=$rev";
797    $src = ml($image, $more);
798    echo '<div class="mediamanager-preview">';
799    echo '<img src="'.$src.'" alt="" width="99%" style="max-width: '.$w.'px;" /><br /><br />';
800
801    $link = ml($image,$more,true,'&');
802
803    $form = new Doku_Form(array('action'=>$link, 'target'=>'_blank'));
804    $form->addElement(form_makeButton('submit','',$lang['mediaview']));
805    $form->printForm();
806
807    // delete button
808    if($auth >= AUTH_DELETE && !$rev){
809        $form = new Doku_Form(array('action'=>media_managerURL(array('delete' => $image))));
810        $form->addElement(form_makeButton('submit','',$lang['btn_delete']));
811        $form->printForm();
812
813        $form = new Doku_Form(array('action'=>media_managerURL()));
814        $form->addHidden('mediado','update');
815        $form->addElement(form_makeButton('submit','',$lang['media_update']));
816        $form->printForm();
817    }
818    echo '</div>';
819}
820
821/**
822 * Prints mediafile tags
823 *
824 * @author Kate Arzamastseva <pshns@ukr.net>
825 */
826function media_details($image, $auth, $rev=false) {
827    global $lang, $config_cascade;;
828
829    if (!$image) return '';
830    if ($auth < AUTH_READ) {
831        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
832        return '';
833    }
834
835    // load the field descriptions
836    static $tags = null;
837    if(is_null($tags)){
838        foreach (array('default','local') as $config_group) {
839            if (empty($config_cascade['mediameta'][$config_group])) continue;
840            foreach ($config_cascade['mediameta'][$config_group] as $config_file) {
841                if(@file_exists($config_file)){
842                    include($config_file);
843                }
844            }
845        }
846    }
847
848    $src = mediaFN($image, $rev);
849    $meta = new JpegMeta($src);
850    echo '<dl class="img_tags">';
851    foreach($tags as $key => $tag){
852        $t = $tag[0];
853        if (!is_array($t)) $t = array($tag[0]);
854        $value = media_getTag($t, $meta, '-');
855        $value = cleanText($value);
856        echo '<dt>'.$lang[$tag[1]].':</dt><dd>';
857        if ($tag[2] == 'text') echo hsc($value);
858        if ($tag[2] == 'date') echo dformat($value);
859        echo '</dd>';
860    }
861    echo '</dl>';
862}
863
864/**
865 * Returns the requested EXIF/IPTC tag from the image meta
866 *
867 * @author Kate Arzamastseva <pshns@ukr.net>
868 * @param array $tags
869 * @param JpegMeta $meta
870 * @param string $alt
871 * @return string
872 */
873function media_getTag($tags,$meta,$alt=''){
874    if($meta === false) return $alt;
875    $info = $meta->getField($tags);
876    if($info == false) return $alt;
877    return $info;
878}
879
880/**
881 * Shows difference between two revisions of file
882 *
883 * @author Kate Arzamastseva <pshns@ukr.net>
884 */
885function media_diff($image, $ns, $auth) {
886    global $lang;
887    global $conf;
888
889    $rev1 = (int) $_REQUEST['rev'];
890
891    if(is_array($_REQUEST['rev2'])){
892        $rev1 = (int) $_REQUEST['rev2'][0];
893        $rev2 = (int) $_REQUEST['rev2'][1];
894
895        if(!$rev1){
896            $rev1 = $rev2;
897            unset($rev2);
898        }
899    }else{
900        $rev2 = (int) $_REQUEST['rev2'];
901    }
902    if($rev1 && $rev2){            // two specific revisions wanted
903        // make sure order is correct (older on the left)
904        if($rev1 < $rev2){
905            $l_rev = $rev1;
906            $r_rev = $rev2;
907        }else{
908            $l_rev = $rev2;
909            $r_rev = $rev1;
910        }
911    }elseif($rev1){                // single revision given, compare to current
912        $r_rev = '';
913        $l_rev = $rev1;
914    }else{                        // no revision was given, compare previous to current
915        $r_rev = '';
916        $revs = getRevisions($image, 0, 1, 8192, true);
917        $l_rev = $revs[0];
918    }
919    echo '<ul class="mediamanager-table-50"><li><div>';
920    media_preview($image, $auth, $l_rev);
921    echo '</div></li>';
922    echo '<li><div>';
923    media_preview($image, $auth, $r_rev);
924    echo '</div></li><li><div>';
925    media_details($image, $auth, $l_rev);
926    echo '</div></li>';
927    echo '<li><div>';
928    media_details($image, $auth, $r_rev);
929    echo '</div></li></ul>';
930}
931
932/**
933 * List all files found by the search request
934 *
935 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
936 * @author Andreas Gohr <gohr@cosmocode.de>
937 * @author Kate Arzamastseva <pshns@ukr.net>
938 * @triggers MEDIA_SEARCH
939 */
940function media_searchlist($query,$ns,$auth=null,$fullscreen=false){
941    global $conf;
942    global $lang;
943
944    $ns = cleanID($ns);
945
946    if ($query) {
947        $evdata = array(
948                'ns'    => $ns,
949                'data'  => array(),
950                'query' => $query
951                );
952        $evt = new Doku_Event('MEDIA_SEARCH', $evdata);
953        if ($evt->advise_before()) {
954            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
955            $pattern = '/'.preg_quote($evdata['query'],'/').'/i';
956            search($evdata['data'],
957                    $conf['mediadir'],
958                    'search_media',
959                    array('showmsg'=>false,'pattern'=>$pattern),
960                    $dir);
961        }
962        $evt->advise_after();
963        unset($evt);
964    }
965
966    if (!$fullscreen) {
967        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
968        media_searchform($ns,$query);
969    }
970
971    if(!count($evdata['data'])){
972        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
973    }else foreach($evdata['data'] as $item){
974        if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
975        else media_printfile_thumbs($item,$item['perm'],'',true);
976    }
977}
978
979/**
980 * Print action links for a file depending on filetype
981 * and available permissions
982 */
983function media_fileactions($item,$auth){
984    global $lang;
985
986    // view button
987    $link = ml($item['id'],'',true);
988    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
989        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
990
991    // no further actions if not writable
992    if(!$item['writable']) return;
993
994    // delete button
995    if($auth >= AUTH_DELETE){
996        $link = DOKU_BASE.'lib/exe/mediamanager.php?delete='.rawurlencode($item['id']).
997            '&amp;sectok='.getSecurityToken();
998        echo ' <a href="'.$link.'" class="btn_media_delete" title="'.$item['id'].'">'.
999            '<img src="'.DOKU_BASE.'lib/images/trash.png" alt="'.$lang['btn_delete'].'" '.
1000            'title="'.$lang['btn_delete'].'" class="btn" /></a>';
1001    }
1002
1003    // edit button
1004    if($auth >= AUTH_UPLOAD && $item['isimg'] && $item['meta']->getField('File.Mime') == 'image/jpeg'){
1005        $link = DOKU_BASE.'lib/exe/mediamanager.php?edit='.rawurlencode($item['id']);
1006        echo ' <a href="'.$link.'">'.
1007            '<img src="'.DOKU_BASE.'lib/images/pencil.png" alt="'.$lang['metaedit'].'" '.
1008            'title="'.$lang['metaedit'].'" class="btn" /></a>';
1009    }
1010
1011}
1012
1013/**
1014 * Formats and prints one file in the list
1015 */
1016function media_printfile($item,$auth,$jump,$display_namespace=false){
1017    global $lang;
1018    global $conf;
1019
1020    // Prepare zebra coloring
1021    // I always wanted to use this variable name :-D
1022    static $twibble = 1;
1023    $twibble *= -1;
1024    $zebra = ($twibble == -1) ? 'odd' : 'even';
1025
1026    // Automatically jump to recent action
1027    if($jump == $item['id']) {
1028        $jump = ' id="scroll__here" ';
1029    }else{
1030        $jump = '';
1031    }
1032
1033    // Prepare fileicons
1034    list($ext,$mime,$dl) = mimetype($item['file'],false);
1035    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
1036    $class = 'select mediafile mf_'.$class;
1037
1038    // Prepare filename
1039    $file = utf8_decodeFN($item['file']);
1040
1041    // Prepare info
1042    $info = '';
1043    if($item['isimg']){
1044        $info .= (int) $item['meta']->getField('File.Width');
1045        $info .= '&#215;';
1046        $info .= (int) $item['meta']->getField('File.Height');
1047        $info .= ' ';
1048    }
1049    $info .= '<i>'.dformat($item['mtime']).'</i>';
1050    $info .= ' ';
1051    $info .= filesize_h($item['size']);
1052
1053    // output
1054    echo '<div class="'.$zebra.'"'.$jump.'>'.NL;
1055    if (!$display_namespace) {
1056        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
1057    } else {
1058        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
1059    }
1060    echo '<span class="info">('.$info.')</span>'.NL;
1061    media_fileactions($item,$auth);
1062    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
1063    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
1064    echo '</div>';
1065    if($item['isimg']) media_printimgdetail($item);
1066    echo '<div class="clearer"></div>'.NL;
1067    echo '</div>'.NL;
1068}
1069
1070/**
1071 * Formats and prints one file in the list in the thumbnails view
1072 *
1073 * @author Kate Arzamastseva <pshns@ukr.net>
1074 */
1075function media_printfile_thumbs($item,$auth,$jump){
1076    global $lang;
1077    global $conf;
1078
1079    // Prepare filename
1080    $file = utf8_decodeFN($item['file']);
1081
1082    // output
1083    echo '<li><div>';
1084    if($item['isimg']) {
1085        media_printimgdetail($item, true);
1086    } else {
1087        echo '<a name="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1088            media_managerURL(array('image' => hsc($item['id']))).'">';
1089        echo '<img src="'.DOKU_BASE.'lib/images/icon-file.png" width="90px" />';
1090        echo '</a>';
1091    }
1092    echo '<a href="'.media_managerURL(array('image' => hsc($item['id']))).'" name=
1093        "h_:'.$item['id'].'" class="info" >'.hsc($file).'</a>';
1094    if($item['isimg']){
1095        $info = '';
1096        $info .= (int) $item['meta']->getField('File.Width');
1097        $info .= '&#215;';
1098        $info .= (int) $item['meta']->getField('File.Height');
1099        echo '<span class="info">'.$info.'</span>';
1100    } else {
1101        echo '<span class="info">&nbsp;</span>';
1102    }
1103    $info = '<i>'.dformat($item['mtime']).'</i>';
1104    echo '<span class="info">'.$info.'</span>';
1105    $info = filesize_h($item['size']);
1106    echo '<span class="info">'.$info.'</span>';
1107    echo '<div class="clearer"></div>';
1108    echo '</div></li>'.NL;
1109}
1110
1111/**
1112 * Prints a thumbnail and metainfos
1113 */
1114function media_printimgdetail($item, $fullscreen=false){
1115    // prepare thumbnail
1116    if (!$fullscreen) $size = 120;
1117    else $size = 90;
1118    $w = (int) $item['meta']->getField('File.Width');
1119    $h = (int) $item['meta']->getField('File.Height');
1120    if($w>$size || $h>$size){
1121        if (!$fullscreen) {
1122            $ratio = $item['meta']->getResizeRatio($size);
1123        } else {
1124            $ratio = $item['meta']->getResizeRatio($size,$size);
1125        }
1126        $w = floor($w * $ratio);
1127        $h = floor($h * $ratio);
1128    }
1129    $src = ml($item['id'],array('w'=>$w,'h'=>$h));
1130    $p = array();
1131    $p['width']  = $w;
1132    if (!$fullscreen) $p['height'] = $h;
1133    $p['alt']    = $item['id'];
1134    $p['class']  = 'thumb';
1135    $att = buildAttributes($p);
1136
1137    // output
1138    if ($fullscreen) {
1139        echo '<a name="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1140            media_managerURL(array('image' => hsc($item['id']))).'">';
1141        echo '<img src="'.$src.'" '.$att.' />';
1142        echo '</a>';
1143        return 1;
1144    }
1145
1146    echo '<div class="detail">';
1147    echo '<div class="thumb">';
1148    echo '<a name="d_:'.$item['id'].'" class="select">';
1149    echo '<img src="'.$src.'" '.$att.' />';
1150    echo '</a>';
1151    echo '</div>';
1152
1153    // read EXIF/IPTC data
1154    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
1155    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
1156                'EXIF.TIFFImageDescription',
1157                'EXIF.TIFFUserComment'));
1158    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
1159    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
1160
1161    // print EXIF/IPTC data
1162    if($t || $d || $k ){
1163        echo '<p>';
1164        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
1165        if($d) echo htmlspecialchars($d).'<br />';
1166        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
1167        echo '</p>';
1168    }
1169    echo '</div>';
1170}
1171
1172/**
1173 * Build link based on the current, adding/rewriting
1174 * parameters
1175 *
1176 * @author Kate Arzamastseva <pshns@ukr.net>
1177 * @param array $params
1178 * @param string $amp - separator
1179 * @return string - link
1180 */
1181function media_managerURL($params=false, $amp='&') {
1182    global $conf;
1183    global $ID;
1184
1185    $url = $_SERVER['REQUEST_URI'];
1186
1187    $urlArray = explode('?', $url, 2);
1188    $gets = @$urlArray[1];
1189    parse_str($gets, $gets);
1190
1191    if ($gets['edit']) $gets['image'] = $gets['edit'];
1192    unset($gets['edit']);
1193    unset($gets['sectok']);
1194    unset($gets['delete']);
1195    unset($gets['rev']);
1196    unset($gets['mediado']);
1197
1198    if ($params) {
1199        foreach ($params as $k => $v) {
1200            $gets[$k] = $v;
1201        }
1202    }
1203    unset($gets['id']);
1204    if ($gets['delete']) {
1205        unset($gets['image']);
1206        unset($gets['tab_details']);
1207    }
1208
1209    return wl($ID,$gets,false,$amp);
1210}
1211
1212/**
1213 * Print the media upload form if permissions are correct
1214 *
1215 * @author Andreas Gohr <andi@splitbrain.org>
1216 * @author Kate Arzamastseva <pshns@ukr.net>
1217 */
1218function media_uploadform($ns, $auth, $fullscreen = false){
1219    global $lang;
1220
1221    if($auth < AUTH_UPLOAD) {
1222        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
1223        return;
1224    }
1225
1226    $update = false;
1227    $id = '';
1228    if ($auth >= AUTH_DELETE && $fullscreen && $_REQUEST['mediado'] == 'update') {
1229        $update = true;
1230        $id = cleanID($_REQUEST['image']);
1231    }
1232
1233    // The default HTML upload form
1234    $params = array('id'      => 'dw__upload',
1235                    'enctype' => 'multipart/form-data');
1236    if (!$fullscreen) $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1237    else $params['action'] = media_managerURL(array('tab_files' => 'files'));
1238
1239    $form = new Doku_Form($params);
1240    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediaupload'] . '</div>');
1241    $form->addElement(formSecurityToken());
1242    $form->addHidden('ns', hsc($ns));
1243    $form->addElement(form_makeOpenTag('p'));
1244    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
1245    $form->addElement(form_makeCloseTag('p'));
1246    $form->addElement(form_makeOpenTag('p'));
1247    $form->addElement(form_makeTextField('id', $id, $lang['txt_filename'].':', 'upload__name'));
1248    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
1249    $form->addElement(form_makeCloseTag('p'));
1250
1251    if($auth >= AUTH_DELETE){
1252        $form->addElement(form_makeOpenTag('p'));
1253        $attrs = array();
1254        if ($update) $attrs['checked'] = 'checked';
1255        $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check', $attrs));
1256        $form->addElement(form_makeCloseTag('p'));
1257    }
1258    html_form('upload', $form);
1259
1260    // prepare flashvars for multiupload
1261    $opt = array(
1262            'L_gridname'  => $lang['mu_gridname'] ,
1263            'L_gridsize'  => $lang['mu_gridsize'] ,
1264            'L_gridstat'  => $lang['mu_gridstat'] ,
1265            'L_namespace' => $lang['mu_namespace'] ,
1266            'L_overwrite' => $lang['txt_overwrt'],
1267            'L_browse'    => $lang['mu_browse'],
1268            'L_upload'    => $lang['btn_upload'],
1269            'L_toobig'    => $lang['mu_toobig'],
1270            'L_ready'     => $lang['mu_ready'],
1271            'L_done'      => $lang['mu_done'],
1272            'L_fail'      => $lang['mu_fail'],
1273            'L_authfail'  => $lang['mu_authfail'],
1274            'L_progress'  => $lang['mu_progress'],
1275            'L_filetypes' => $lang['mu_filetypes'],
1276            'L_info'      => $lang['mu_info'],
1277            'L_lasterr'   => $lang['mu_lasterr'],
1278
1279            'O_ns'        => ":$ns",
1280            'O_backend'   => 'mediamanager.php?'.session_name().'='.session_id(),
1281            'O_maxsize'   => php_to_byte(ini_get('upload_max_filesize')),
1282            'O_extensions'=> join('|',array_keys(getMimeTypes())),
1283            'O_overwrite' => ($auth >= AUTH_DELETE),
1284            'O_sectok'    => getSecurityToken(),
1285            'O_authtok'   => auth_createToken(),
1286            );
1287    $var = buildURLparams($opt);
1288    // output the flash uploader
1289    ?>
1290        <div id="dw__flashupload" style="display:none">
1291        <div class="upload"><?php echo $lang['mu_intro']?></div>
1292        <?php echo html_flashobject('multipleUpload.swf','500','190',null,$opt); ?>
1293        </div>
1294        <?php
1295}
1296
1297/**
1298 * Print the search field form
1299 *
1300 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1301 * @author Kate Arzamastseva <pshns@ukr.net>
1302 */
1303function media_searchform($ns,$query='',$fullscreen=false){
1304    global $lang;
1305
1306    // The default HTML search form
1307    $params = array('id' => 'dw__mediasearch');
1308    if (!$fullscreen) $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1309    else $params['action'] = media_managerURL();
1310    $form = new Doku_Form($params);
1311    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediasearch'] . '</div>');
1312    $form->addElement(formSecurityToken());
1313    $form->addHidden('ns', $ns);
1314    if (!$fullscreen) $form->addHidden('do', 'searchlist');
1315    else $form->addHidden('mediado', 'searchlist');
1316    $form->addElement(form_makeOpenTag('p'));
1317    $form->addElement(form_makeTextField('q', $query,$lang['searchmedia'],'','',array('title'=>sprintf($lang['searchmedia_in'],hsc($ns).':*'))));
1318    $form->addElement(form_makeButton('submit', '', $lang['btn_search']));
1319    $form->addElement(form_makeCloseTag('p'));
1320    html_form('searchmedia', $form);
1321}
1322
1323/**
1324 * Build a tree outline of available media namespaces
1325 *
1326 * @author Andreas Gohr <andi@splitbrain.org>
1327 */
1328function media_nstree($ns){
1329    global $conf;
1330    global $lang;
1331
1332    // currently selected namespace
1333    $ns  = cleanID($ns);
1334    if(empty($ns)){
1335        global $ID;
1336        $ns = dirname(str_replace(':','/',$ID));
1337        if($ns == '.') $ns ='';
1338    }
1339    $ns  = utf8_encodeFN(str_replace(':','/',$ns));
1340
1341    $data = array();
1342    search($data,$conf['mediadir'],'search_index',array('ns' => $ns, 'nofiles' => true));
1343
1344    // wrap a list with the root level around the other namespaces
1345    $item = array( 'level' => 0, 'id' => '',
1346            'open' =>'true', 'label' => '['.$lang['mediaroot'].']');
1347
1348    echo '<ul class="idx">';
1349    echo media_nstree_li($item);
1350    echo media_nstree_item($item);
1351    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
1352    echo '</li>';
1353    echo '</ul>';
1354}
1355
1356/**
1357 * Userfunction for html_buildlist
1358 *
1359 * Prints a media namespace tree item
1360 *
1361 * @author Andreas Gohr <andi@splitbrain.org>
1362 */
1363function media_nstree_item($item){
1364    $pos   = strrpos($item['id'], ':');
1365    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
1366    if(!$item['label']) $item['label'] = $label;
1367
1368    $ret  = '';
1369    if (!($_REQUEST['do'] == 'media'))
1370    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
1371    else $ret .= '<a href="'.media_managerURL(array('ns' => idfilter($item['id']))).'" class="idx_dir">';
1372    $ret .= $item['label'];
1373    $ret .= '</a>';
1374    return $ret;
1375}
1376
1377/**
1378 * Userfunction for html_buildlist
1379 *
1380 * Prints a media namespace tree item opener
1381 *
1382 * @author Andreas Gohr <andi@splitbrain.org>
1383 */
1384function media_nstree_li($item){
1385    $class='media level'.$item['level'];
1386    if($item['open']){
1387        $class .= ' open';
1388        $img   = DOKU_BASE.'lib/images/minus.gif';
1389        $alt   = '&minus;';
1390    }else{
1391        $class .= ' closed';
1392        $img   = DOKU_BASE.'lib/images/plus.gif';
1393        $alt   = '+';
1394    }
1395    // TODO: only deliver an image if it actually has a subtree...
1396    return '<li class="'.$class.'">'.
1397        '<img src="'.$img.'" alt="'.$alt.'" />';
1398}
1399
1400/**
1401 * Resizes the given image to the given size
1402 *
1403 * @author  Andreas Gohr <andi@splitbrain.org>
1404 */
1405function media_resize_image($file, $ext, $w, $h=0){
1406    global $conf;
1407
1408    $info = @getimagesize($file); //get original size
1409    if($info == false) return $file; // that's no image - it's a spaceship!
1410
1411    if(!$h) $h = round(($w * $info[1]) / $info[0]);
1412
1413    // we wont scale up to infinity
1414    if($w > 2000 || $h > 2000) return $file;
1415
1416    //cache
1417    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
1418    $mtime = @filemtime($local); // 0 if not exists
1419
1420    if( $mtime > filemtime($file) ||
1421            media_resize_imageIM($ext,$file,$info[0],$info[1],$local,$w,$h) ||
1422            media_resize_imageGD($ext,$file,$info[0],$info[1],$local,$w,$h) ){
1423        if($conf['fperm']) chmod($local, $conf['fperm']);
1424        return $local;
1425    }
1426    //still here? resizing failed
1427    return $file;
1428}
1429
1430/**
1431 * Crops the given image to the wanted ratio, then calls media_resize_image to scale it
1432 * to the wanted size
1433 *
1434 * Crops are centered horizontally but prefer the upper third of an vertical
1435 * image because most pics are more interesting in that area (rule of thirds)
1436 *
1437 * @author  Andreas Gohr <andi@splitbrain.org>
1438 */
1439function media_crop_image($file, $ext, $w, $h=0){
1440    global $conf;
1441
1442    if(!$h) $h = $w;
1443    $info = @getimagesize($file); //get original size
1444    if($info == false) return $file; // that's no image - it's a spaceship!
1445
1446    // calculate crop size
1447    $fr = $info[0]/$info[1];
1448    $tr = $w/$h;
1449    if($tr >= 1){
1450        if($tr > $fr){
1451            $cw = $info[0];
1452            $ch = (int) $info[0]/$tr;
1453        }else{
1454            $cw = (int) $info[1]*$tr;
1455            $ch = $info[1];
1456        }
1457    }else{
1458        if($tr < $fr){
1459            $cw = (int) $info[1]*$tr;
1460            $ch = $info[1];
1461        }else{
1462            $cw = $info[0];
1463            $ch = (int) $info[0]/$tr;
1464        }
1465    }
1466    // calculate crop offset
1467    $cx = (int) ($info[0]-$cw)/2;
1468    $cy = (int) ($info[1]-$ch)/3;
1469
1470    //cache
1471    $local = getCacheName($file,'.media.'.$cw.'x'.$ch.'.crop.'.$ext);
1472    $mtime = @filemtime($local); // 0 if not exists
1473
1474    if( $mtime > filemtime($file) ||
1475            media_crop_imageIM($ext,$file,$info[0],$info[1],$local,$cw,$ch,$cx,$cy) ||
1476            media_resize_imageGD($ext,$file,$cw,$ch,$local,$cw,$ch,$cx,$cy) ){
1477        if($conf['fperm']) chmod($local, $conf['fperm']);
1478        return media_resize_image($local,$ext, $w, $h);
1479    }
1480
1481    //still here? cropping failed
1482    return media_resize_image($file,$ext, $w, $h);
1483}
1484
1485/**
1486 * Download a remote file and return local filename
1487 *
1488 * returns false if download fails. Uses cached file if available and
1489 * wanted
1490 *
1491 * @author  Andreas Gohr <andi@splitbrain.org>
1492 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
1493 */
1494function media_get_from_URL($url,$ext,$cache){
1495    global $conf;
1496
1497    // if no cache or fetchsize just redirect
1498    if ($cache==0)           return false;
1499    if (!$conf['fetchsize']) return false;
1500
1501    $local = getCacheName(strtolower($url),".media.$ext");
1502    $mtime = @filemtime($local); // 0 if not exists
1503
1504    //decide if download needed:
1505    if( ($mtime == 0) ||                           // cache does not exist
1506            ($cache != -1 && $mtime < time()-$cache)   // 'recache' and cache has expired
1507      ){
1508        if(media_image_download($url,$local)){
1509            return $local;
1510        }else{
1511            return false;
1512        }
1513    }
1514
1515    //if cache exists use it else
1516    if($mtime) return $local;
1517
1518    //else return false
1519    return false;
1520}
1521
1522/**
1523 * Download image files
1524 *
1525 * @author Andreas Gohr <andi@splitbrain.org>
1526 */
1527function media_image_download($url,$file){
1528    global $conf;
1529    $http = new DokuHTTPClient();
1530    $http->max_bodysize = $conf['fetchsize'];
1531    $http->timeout = 25; //max. 25 sec
1532    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
1533
1534    $data = $http->get($url);
1535    if(!$data) return false;
1536
1537    $fileexists = @file_exists($file);
1538    $fp = @fopen($file,"w");
1539    if(!$fp) return false;
1540    fwrite($fp,$data);
1541    fclose($fp);
1542    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
1543
1544    // check if it is really an image
1545    $info = @getimagesize($file);
1546    if(!$info){
1547        @unlink($file);
1548        return false;
1549    }
1550
1551    return true;
1552}
1553
1554/**
1555 * resize images using external ImageMagick convert program
1556 *
1557 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
1558 * @author Andreas Gohr <andi@splitbrain.org>
1559 */
1560function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
1561    global $conf;
1562
1563    // check if convert is configured
1564    if(!$conf['im_convert']) return false;
1565
1566    // prepare command
1567    $cmd  = $conf['im_convert'];
1568    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
1569    if ($ext == 'jpg' || $ext == 'jpeg') {
1570        $cmd .= ' -quality '.$conf['jpg_quality'];
1571    }
1572    $cmd .= " $from $to";
1573
1574    @exec($cmd,$out,$retval);
1575    if ($retval == 0) return true;
1576    return false;
1577}
1578
1579/**
1580 * crop images using external ImageMagick convert program
1581 *
1582 * @author Andreas Gohr <andi@splitbrain.org>
1583 */
1584function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
1585    global $conf;
1586
1587    // check if convert is configured
1588    if(!$conf['im_convert']) return false;
1589
1590    // prepare command
1591    $cmd  = $conf['im_convert'];
1592    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
1593    if ($ext == 'jpg' || $ext == 'jpeg') {
1594        $cmd .= ' -quality '.$conf['jpg_quality'];
1595    }
1596    $cmd .= " $from $to";
1597
1598    @exec($cmd,$out,$retval);
1599    if ($retval == 0) return true;
1600    return false;
1601}
1602
1603/**
1604 * resize or crop images using PHP's libGD support
1605 *
1606 * @author Andreas Gohr <andi@splitbrain.org>
1607 * @author Sebastian Wienecke <s_wienecke@web.de>
1608 */
1609function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
1610    global $conf;
1611
1612    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
1613
1614    // check available memory
1615    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
1616        return false;
1617    }
1618
1619    // create an image of the given filetype
1620    if ($ext == 'jpg' || $ext == 'jpeg'){
1621        if(!function_exists("imagecreatefromjpeg")) return false;
1622        $image = @imagecreatefromjpeg($from);
1623    }elseif($ext == 'png') {
1624        if(!function_exists("imagecreatefrompng")) return false;
1625        $image = @imagecreatefrompng($from);
1626
1627    }elseif($ext == 'gif') {
1628        if(!function_exists("imagecreatefromgif")) return false;
1629        $image = @imagecreatefromgif($from);
1630    }
1631    if(!$image) return false;
1632
1633    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
1634        $newimg = @imagecreatetruecolor ($to_w, $to_h);
1635    }
1636    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
1637    if(!$newimg){
1638        imagedestroy($image);
1639        return false;
1640    }
1641
1642    //keep png alpha channel if possible
1643    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
1644        imagealphablending($newimg, false);
1645        imagesavealpha($newimg,true);
1646    }
1647
1648    //keep gif transparent color if possible
1649    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
1650        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
1651            $transcolorindex = @imagecolortransparent($image);
1652            if($transcolorindex >= 0 ) { //transparent color exists
1653                $transcolor = @imagecolorsforindex($image, $transcolorindex);
1654                $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
1655                @imagefill($newimg, 0, 0, $transcolorindex);
1656                @imagecolortransparent($newimg, $transcolorindex);
1657            }else{ //filling with white
1658                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1659                @imagefill($newimg, 0, 0, $whitecolorindex);
1660            }
1661        }else{ //filling with white
1662            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1663            @imagefill($newimg, 0, 0, $whitecolorindex);
1664        }
1665    }
1666
1667    //try resampling first
1668    if(function_exists("imagecopyresampled")){
1669        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
1670            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1671        }
1672    }else{
1673        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1674    }
1675
1676    $okay = false;
1677    if ($ext == 'jpg' || $ext == 'jpeg'){
1678        if(!function_exists('imagejpeg')){
1679            $okay = false;
1680        }else{
1681            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
1682        }
1683    }elseif($ext == 'png') {
1684        if(!function_exists('imagepng')){
1685            $okay = false;
1686        }else{
1687            $okay =  imagepng($newimg, $to);
1688        }
1689    }elseif($ext == 'gif') {
1690        if(!function_exists('imagegif')){
1691            $okay = false;
1692        }else{
1693            $okay = imagegif($newimg, $to);
1694        }
1695    }
1696
1697    // destroy GD image ressources
1698    if($image) imagedestroy($image);
1699    if($newimg) imagedestroy($newimg);
1700
1701    return $okay;
1702}
1703
1704/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
1705