xref: /dokuwiki/inc/media.php (revision 80291f9e4256d8bd01f0b0a0589aab2ea402ab64) 
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        $config_files = getConfigFiles('mediameta');
103        foreach ($config_files as $config_file) {
104            if(@file_exists($config_file)) include($config_file);
105        }
106    }
107
108    $src = mediaFN($id);
109
110    // output
111    if (!$fullscreen) {
112        echo '<h1>'.hsc(noNS($id)).'</h1>'.NL;
113        $action = DOKU_BASE.'lib/exe/mediamanager.php';
114    } else {
115        $action = media_managerURL(array('tab_details' => 'view'), '&');
116    }
117    echo '<form action="'.$action.'" id="mediamanager__save_meta" accept-charset="utf-8" method="post" class="meta">'.NL;
118
119    formSecurityToken();
120    foreach($fields as $key => $field){
121        // get current value
122        if (empty($field[0])) continue;
123        $tags = array($field[0]);
124        if(is_array($field[3])) $tags = array_merge($tags,$field[3]);
125        $value = tpl_img_getTag($tags,'',$src);
126        $value = cleanText($value);
127
128        // prepare attributes
129        $p = array();
130        $p['class'] = 'edit';
131        $p['id']    = 'meta__'.$key;
132        $p['name']  = 'meta['.$field[0].']';
133
134        // put label
135        echo '<div class="metafield">';
136        echo '<label for="meta__'.$key.'">';
137        echo ($lang[$field[1]]) ? $lang[$field[1]] : $field[1];
138        echo ':</label>';
139
140        // put input field
141        if($field[2] == 'text'){
142            $p['value'] = $value;
143            $p['type']  = 'text';
144            $att = buildAttributes($p);
145            echo "<input $att/>".NL;
146        }else{
147            $att = buildAttributes($p);
148            echo "<textarea $att rows=\"6\" cols=\"50\">".formText($value).'</textarea>'.NL;
149        }
150        echo '</div>'.NL;
151    }
152    echo '<div class="buttons">'.NL;
153    echo '<input type="hidden" name="img" value="'.hsc($id).'" />'.NL;
154    if (!$fullscreen) {
155        $do = 'do';
156    } else {
157        echo '<input type="hidden" name="mediado" value="save" />';
158        $do = 'mediado';
159    }
160    echo '<input name="'.$do.'[save]" type="submit" value="'.$lang['btn_save'].
161        '" title="'.$lang['btn_save'].' [S]" accesskey="s" class="button" />'.NL;
162    if (!$fullscreen)
163    echo '<input name="do[cancel]" type="submit" value="'.$lang['btn_cancel'].
164        '" title="'.$lang['btn_cancel'].' [C]" accesskey="c" class="button" />'.NL;
165    echo '</div>'.NL;
166    echo '</form>'.NL;
167}
168
169/**
170 * Convenience function to check if a media file is still in use
171 *
172 * @author Michael Klier <chi@chimeric.de>
173 */
174function media_inuse($id) {
175    global $conf;
176    $mediareferences = array();
177    if($conf['refcheck']){
178        $mediareferences = ft_mediause($id,$conf['refshow']);
179        if(!count($mediareferences)) {
180            return false;
181        } else {
182            return $mediareferences;
183        }
184    } else {
185        return false;
186    }
187}
188
189define('DOKU_MEDIA_DELETED', 1);
190define('DOKU_MEDIA_NOT_AUTH', 2);
191define('DOKU_MEDIA_INUSE', 4);
192define('DOKU_MEDIA_EMPTY_NS', 8);
193
194/**
195 * Handles media file deletions
196 *
197 * If configured, checks for media references before deletion
198 *
199 * @author Andreas Gohr <andi@splitbrain.org>
200 * @return int One of: 0,
201                       DOKU_MEDIA_DELETED,
202                       DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS,
203                       DOKU_MEDIA_NOT_AUTH,
204                       DOKU_MEDIA_INUSE
205 */
206function media_delete($id,$auth){
207    global $lang;
208    if($auth < AUTH_DELETE) return DOKU_MEDIA_NOT_AUTH;
209    if(media_inuse($id)) return DOKU_MEDIA_INUSE;
210
211    $file = mediaFN($id);
212
213    // trigger an event - MEDIA_DELETE_FILE
214    $data['id']   = $id;
215    $data['name'] = basename($file);
216    $data['path'] = $file;
217    $data['size'] = (@file_exists($file)) ? filesize($file) : 0;
218
219    $data['unl'] = false;
220    $data['del'] = false;
221    $evt = new Doku_Event('MEDIA_DELETE_FILE',$data);
222    if ($evt->advise_before()) {
223        $old = @filemtime($file);
224        if(!@file_exists(mediaFN($id, $old)) && @file_exists($file)) {
225            // add old revision to the attic
226            media_saveOldRevision($id);
227        }
228
229        $data['unl'] = @unlink($file);
230        if($data['unl']){
231            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_DELETE, $lang['deleted']);
232            $data['del'] = io_sweepNS($id,'mediadir');
233        }
234    }
235    $evt->advise_after();
236    unset($evt);
237
238    if($data['unl'] && $data['del']){
239        return DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS;
240    }
241
242    return $data['unl'] ? DOKU_MEDIA_DELETED : 0;
243}
244
245/**
246 * Handles media file uploads
247 *
248 * @author Andreas Gohr <andi@splitbrain.org>
249 * @author Michael Klier <chi@chimeric.de>
250 * @return mixed false on error, id of the new file on success
251 */
252function media_upload($ns,$auth){
253    if(!checkSecurityToken()) return false;
254    global $lang;
255
256    // get file and id
257    $id   = $_POST['mediaid'];
258    $file = $_FILES['upload'];
259    if(empty($id)) $id = $file['name'];
260
261    // check for errors (messages are done in lib/exe/mediamanager.php)
262    if($file['error']) return false;
263
264    // check extensions
265    list($fext,$fmime,$dl) = mimetype($file['name']);
266    list($iext,$imime,$dl) = mimetype($id);
267    if($fext && !$iext){
268        // no extension specified in id - read original one
269        $id   .= '.'.$fext;
270        $imime = $fmime;
271    }elseif($fext && $fext != $iext){
272        // extension was changed, print warning
273        msg(sprintf($lang['mediaextchange'],$fext,$iext));
274    }
275
276    $res = media_save(array('name' => $file['tmp_name'],
277                            'mime' => $imime,
278                            'ext'  => $iext), $ns.':'.$id,
279                      $_REQUEST['ow'], $auth, 'move_uploaded_file');
280    if (is_array($res)) {
281        msg($res[0], $res[1]);
282        return false;
283    }
284    return $res;
285}
286
287/**
288 * This generates an action event and delegates to _media_upload_action().
289 * Action plugins are allowed to pre/postprocess the uploaded file.
290 * (The triggered event is preventable.)
291 *
292 * Event data:
293 * $data[0]     fn_tmp: the temporary file name (read from $_FILES)
294 * $data[1]     fn: the file name of the uploaded file
295 * $data[2]     id: the future directory id of the uploaded file
296 * $data[3]     imime: the mimetype of the uploaded file
297 * $data[4]     overwrite: if an existing file is going to be overwritten
298 *
299 * @triggers MEDIA_UPLOAD_FINISH
300 */
301function media_save($file, $id, $ow, $auth, $move) {
302    if($auth < AUTH_UPLOAD) {
303        return array("You don't have permissions to upload files.", -1);
304    }
305
306    if (!isset($file['mime']) || !isset($file['ext'])) {
307        list($ext, $mime) = mimetype($id);
308        if (!isset($file['mime'])) {
309            $file['mime'] = $mime;
310        }
311        if (!isset($file['ext'])) {
312            $file['ext'] = $ext;
313        }
314    }
315
316    global $lang;
317
318    // get filename
319    $id   = cleanID($id,false,true);
320    $fn   = mediaFN($id);
321
322    // get filetype regexp
323    $types = array_keys(getMimeTypes());
324    $types = array_map(create_function('$q','return preg_quote($q,"/");'),$types);
325    $regex = join('|',$types);
326
327    // because a temp file was created already
328    if(!preg_match('/\.('.$regex.')$/i',$fn)) {
329        return array($lang['uploadwrong'],-1);
330    }
331
332    //check for overwrite
333    $overwrite = @file_exists($fn);
334    if($overwrite && (!$ow || $auth < AUTH_DELETE)) {
335        return array($lang['uploadexist'], 0);
336    }
337    // check for valid content
338    $ok = media_contentcheck($file['name'], $file['mime']);
339    if($ok == -1){
340        return array(sprintf($lang['uploadbadcontent'],'.' . $file['ext']),-1);
341    }elseif($ok == -2){
342        return array($lang['uploadspam'],-1);
343    }elseif($ok == -3){
344        return array($lang['uploadxss'],-1);
345    }
346
347    // prepare event data
348    $data[0] = $file['name'];
349    $data[1] = $fn;
350    $data[2] = $id;
351    $data[3] = $file['mime'];
352    $data[4] = $overwrite;
353    $data[5] = $move;
354
355    // trigger event
356    return trigger_event('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
357}
358
359/**
360 * Callback adapter for media_upload_finish()
361 * @author Michael Klier <chi@chimeric.de>
362 */
363function _media_upload_action($data) {
364    // fixme do further sanity tests of given data?
365    if(is_array($data) && count($data)===6) {
366        return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
367    } else {
368        return false; //callback error
369    }
370}
371
372/**
373 * Saves an uploaded media file
374 *
375 * @author Andreas Gohr <andi@splitbrain.org>
376 * @author Michael Klier <chi@chimeric.de>
377 * @author Kate Arzamastseva <pshns@ukr.net>
378 */
379function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') {
380    global $conf;
381    global $lang;
382    global $REV;
383
384    $old = @filemtime($fn);
385    if(!@file_exists(mediaFN($id, $old)) && @file_exists($fn)) {
386        // add old revision to the attic if missing
387        media_saveOldRevision($id);
388    }
389
390    // prepare directory
391    io_createNamespace($id, 'media');
392
393    if($move($fn_tmp, $fn)) {
394        @clearstatcache(true,$fn);
395        $new = @filemtime($fn);
396        // Set the correct permission here.
397        // Always chmod media because they may be saved with different permissions than expected from the php umask.
398        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
399        chmod($fn, $conf['fmode']);
400        msg($lang['uploadsucc'],1);
401        media_notify($id,$fn,$imime,$old);
402        // add a log entry to the media changelog
403        if ($REV){
404            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_REVERT, $lang['restored'], $REV);
405        } elseif ($overwrite) {
406            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT);
407        } else {
408            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
409        }
410        return $id;
411    }else{
412        return array($lang['uploadfail'],-1);
413    }
414}
415
416/**
417 * Moves the current version of media file to the media_attic
418 * directory
419 *
420 * @author Kate Arzamastseva <pshns@ukr.net>
421 * @param string $id
422 * @return int - revision date
423 */
424function media_saveOldRevision($id){
425    global $conf;
426    $oldf = mediaFN($id);
427    if(!@file_exists($oldf)) return '';
428    $date = filemtime($oldf);
429    $newf = mediaFN($id,$date);
430    io_makeFileDir($newf);
431    if(copy($oldf, $newf)) {
432        // Set the correct permission here.
433        // Always chmod media because they may be saved with different permissions than expected from the php umask.
434        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
435        chmod($newf, $conf['fmode']);
436    }
437    return $date;
438}
439
440/**
441 * This function checks if the uploaded content is really what the
442 * mimetype says it is. We also do spam checking for text types here.
443 *
444 * We need to do this stuff because we can not rely on the browser
445 * to do this check correctly. Yes, IE is broken as usual.
446 *
447 * @author Andreas Gohr <andi@splitbrain.org>
448 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
449 * @fixme  check all 26 magic IE filetypes here?
450 */
451function media_contentcheck($file,$mime){
452    global $conf;
453    if($conf['iexssprotect']){
454        $fh = @fopen($file, 'rb');
455        if($fh){
456            $bytes = fread($fh, 256);
457            fclose($fh);
458            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
459                return -3;
460            }
461        }
462    }
463    if(substr($mime,0,6) == 'image/'){
464        $info = @getimagesize($file);
465        if($mime == 'image/gif' && $info[2] != 1){
466            return -1;
467        }elseif($mime == 'image/jpeg' && $info[2] != 2){
468            return -1;
469        }elseif($mime == 'image/png' && $info[2] != 3){
470            return -1;
471        }
472        # fixme maybe check other images types as well
473    }elseif(substr($mime,0,5) == 'text/'){
474        global $TEXT;
475        $TEXT = io_readFile($file);
476        if(checkwordblock()){
477            return -2;
478        }
479    }
480    return 0;
481}
482
483/**
484 * Send a notify mail on uploads
485 *
486 * @author Andreas Gohr <andi@splitbrain.org>
487 */
488function media_notify($id,$file,$mime,$old_rev=false){
489    global $lang;
490    global $conf;
491    global $INFO;
492    if(empty($conf['notify'])) return; //notify enabled?
493
494    $ip = clientIP();
495
496    $text = rawLocale('uploadmail');
497    $text = str_replace('@DATE@',dformat(),$text);
498    $text = str_replace('@BROWSER@',$_SERVER['HTTP_USER_AGENT'],$text);
499    $text = str_replace('@IPADDRESS@',$ip,$text);
500    $text = str_replace('@HOSTNAME@',gethostsbyaddrs($ip),$text);
501    $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
502    $text = str_replace('@USER@',$_SERVER['REMOTE_USER'],$text);
503    $text = str_replace('@MIME@',$mime,$text);
504    $text = str_replace('@MEDIA@',ml($id,'',true,'&',true),$text);
505    $text = str_replace('@SIZE@',filesize_h(filesize($file)),$text);
506    if ($old_rev) {
507        $text = str_replace('@OLD@', ml($id, "rev=$old_rev", true, '&', true), $text);
508    } else {
509        $text = str_replace('@OLD@', '', $text);
510    }
511
512    if(empty($conf['mailprefix'])) {
513        $subject = '['.$conf['title'].'] '.$lang['mail_upload'].' '.$id;
514    } else {
515        $subject = '['.$conf['mailprefix'].'] '.$lang['mail_upload'].' '.$id;
516    }
517
518    mail_send($conf['notify'],$subject,$text,$conf['mailfrom']);
519}
520
521/**
522 * List all files in a given Media namespace
523 */
524function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false){
525    global $conf;
526    global $lang;
527    $ns = cleanID($ns);
528
529    // check auth our self if not given (needed for ajax calls)
530    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
531
532    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
533
534    if($auth < AUTH_READ){
535        // FIXME: print permission warning here instead?
536        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
537    }else{
538        if (!$fullscreenview) media_uploadform($ns, $auth);
539
540        $dir = utf8_encodeFN(str_replace(':','/',$ns));
541        $data = array();
542        search($data,$conf['mediadir'],'search_media',
543                array('showmsg'=>true,'depth'=>1),$dir);
544
545        if(!count($data)){
546            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
547        }else foreach($data as $item){
548            if (!$fullscreenview) media_printfile($item,$auth,$jump);
549            else media_printfile_thumbs($item,$auth,$jump);
550        }
551    }
552    if (!$fullscreenview) media_searchform($ns);
553}
554
555/**
556 * Prints mediamanager tab
557 *
558 * @author Kate Arzamastseva <pshns@ukr.net>
559 * @param string $link
560 * @param string $class
561 * @param string $name
562 * @param string $selected
563 */
564function media_tab($link, $class, $name, $selected=false) {
565    if (!empty($selected) && $selected == $class) $class .= ' selected';
566    $tab = '<a href="'.$link.'" class="'.$class.'" >'.$name.'</a>';
567    echo $tab;
568}
569
570/**
571 * Prints tabs for files list actions
572 *
573 * @author Kate Arzamastseva <pshns@ukr.net>
574 * @param string $selected - opened tab
575 */
576function media_tabs_files($selected=false){
577    global $lang;
578
579    echo '<div class="mediamanager-tabs" id="mediamanager__tabs_files">';
580
581    media_tab(media_managerURL(array('tab_files' => 'files')), 'files', $lang['mediaselect'], $selected);
582    media_tab(media_managerURL(array('tab_files' => 'upload')), 'upload', $lang['media_uploadtab'], $selected);
583    media_tab(media_managerURL(array('tab_files' => 'search')), 'search', $lang['media_searchtab'], $selected);
584
585    echo '<div class="clearer"></div>';
586    echo '</div>';
587}
588
589/**
590 * Prints tabs for files details actions
591 *
592 * @author Kate Arzamastseva <pshns@ukr.net>
593 * @param string $selected - opened tab
594 */
595function media_tabs_details($image, $selected=false){
596    global $lang;
597
598    echo '<div class="mediamanager-tabs" id="mediamanager__tabs_details">';
599
600    media_tab(media_managerURL(array('tab_details' => 'view')), 'view', $lang['media_viewtab'], $selected);
601
602    list($ext, $mime) = mimetype($image);
603    if ($mime == 'image/jpeg') {
604        media_tab(media_managerURL(array('tab_details' => 'edit')), 'edit', $lang['media_edittab'], $selected);
605    }
606    media_tab(media_managerURL(array('tab_details' => 'history')), 'history', $lang['media_historytab'], $selected);
607
608    echo '<div class="clearer"></div>';
609    echo '</div>';
610}
611
612/**
613 * Prints options for the tab that displays a list of all files
614 *
615 * @author Kate Arzamastseva <pshns@ukr.net>
616 */
617function media_tab_files_options($ns){
618    global $lang;
619
620    echo '<div class="background-container">';
621    echo $ns;
622
623    echo '<div id="mediamanager__tabs_list">';
624
625    echo '<a href="'.media_managerURL(array('view' => 'thumbs')).'" id="mediamanager__link_thumbs" >';
626    echo $lang['media_thumbsview'];
627    echo '</a>';
628
629    echo '<a href="'.media_managerURL(array('view' => 'list')).'" id="mediamanager__link_list" >';
630    echo $lang['media_listview'];
631    echo '</a>';
632
633    echo '</div>';
634
635    echo '<div id="mediamanager__sort">';
636    echo $lang['media_sort'];
637    echo '</div>';
638
639    echo '<div class="clearer"></div>';
640    echo '</div>';
641}
642
643/**
644 * Prints tab that displays a list of all files
645 *
646 * @author Kate Arzamastseva <pshns@ukr.net>
647 */
648function media_tab_files($ns,$auth=null,$jump='') {
649    global $lang;
650    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
651
652    media_tab_files_options($ns);
653
654    echo '<div class="scroll-container" >';
655    $view = $_REQUEST['view'];
656    if($auth < AUTH_READ){
657        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
658    }else{
659        if ($view == 'list') {
660            echo '<ul class="mediamanager-list" id="mediamanager__file_list">';
661        } else {
662            echo '<ul class="mediamanager-thumbs" id="mediamanager__file_list">';
663        }
664        media_filelist($ns,$auth,$jump,true);
665        echo '</ul>';
666    }
667    echo '</div>';
668}
669
670/**
671 * Prints tab that displays uploading form
672 *
673 * @author Kate Arzamastseva <pshns@ukr.net>
674 */
675function media_tab_upload($ns,$auth=null,$jump='') {
676    global $lang;
677    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
678
679    echo '<div class="background-container">';
680    echo sprintf($lang['media_upload'], $ns);
681    echo '</div>';
682
683    echo '<div class="scroll-container">';
684    if ($auth >= AUTH_UPLOAD) echo '<div class="upload">' . $lang['mediaupload'] . '</div>';
685    media_uploadform($ns, $auth, true);
686    echo '</div>';
687}
688
689/**
690 * Prints tab that displays search form
691 *
692 * @author Kate Arzamastseva <pshns@ukr.net>
693 */
694function media_tab_search($ns,$auth=null) {
695    global $lang;
696
697    $do = $_REQUEST['mediado'];
698    $query = $_REQUEST['q'];
699    if (!$query) $query = '';
700
701    echo '<div class="background-container">';
702    echo sprintf($lang['media_search'], $ns);
703    echo'</div>';
704
705    echo '<div class="scroll-container">';
706    media_searchform($ns, $query, true);
707
708    if($do == 'searchlist'){
709        $view = $_REQUEST['view'];
710        if ($view == 'list') {
711            echo '<ul class="mediamanager-list" id="mediamanager__file_list">';
712        } else {
713            echo '<ul class="mediamanager-thumbs" id="mediamanager__file_list">';
714        }
715        media_searchlist($query,$ns,$auth,true);
716        echo '</ul>';
717    }
718    echo '</div>';
719}
720
721/**
722 * Prints tab that displays mediafile details
723 *
724 * @author Kate Arzamastseva <pshns@ukr.net>
725 */
726function media_tab_view($image, $ns, $auth=null, $rev=false) {
727    global $lang, $conf;
728    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
729
730    echo '<div class="background-container">';
731    list($ext,$mime,$dl) = mimetype($image,false);
732    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
733    $class = 'select mediafile mf_'.$class;
734    echo '<a class="'.$class.'" >'.$image.'</a>';
735    echo '</div>';
736
737    echo '<div class="scroll-container">';
738    if ($image && $auth >= AUTH_READ) {
739        $meta = new JpegMeta(mediaFN($image, $rev));
740        media_preview($image, $auth, $rev, $meta);
741        media_preview_buttons($image, $auth, $rev);
742        media_details($image, $auth, $rev, $meta);
743
744    } else {
745        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>';
746    }
747    echo '</div>';
748}
749
750/**
751 * Prints tab that displays form for editing mediafile metadata
752 *
753 * @author Kate Arzamastseva <pshns@ukr.net>
754 */
755function media_tab_edit($image, $ns, $auth=null) {
756    global $lang;
757    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
758
759    echo '<div class="background-container">';
760    echo $lang['media_edit'];
761    echo '</div>';
762
763    echo '<div class="scroll-container">';
764    if ($image) {
765        list($ext, $mime) = mimetype($image);
766        if ($mime == 'image/jpeg') media_metaform($image,$auth,true);
767    }
768    echo '</div>';
769}
770
771/**
772 * Prints tab that displays mediafile revisions
773 *
774 * @author Kate Arzamastseva <pshns@ukr.net>
775 */
776function media_tab_history($image, $ns, $auth=null) {
777    global $lang;
778    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
779    $do = $_REQUEST['mediado'];
780
781    echo '<div class="background-container">';
782    echo $lang['media_history'];
783    echo '</div>';
784
785    echo '<div class="scroll-container">';
786    if ($auth >= AUTH_READ && $image) {
787        if ($do == 'diff'){
788            media_diff($image, $ns, $auth);
789        } else {
790            $first = isset($_REQUEST['first']) ? intval($_REQUEST['first']) : 0;
791            html_revisions($first, $image);
792        }
793    } else {
794        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
795    }
796    echo '</div>';
797}
798
799/**
800 * Prints mediafile details
801 *
802 * @author Kate Arzamastseva <pshns@ukr.net>
803 */
804function media_preview($image, $auth, $rev=false, $meta=false) {
805    global $lang;
806
807    echo '<div id="mediamanager__preview">';
808
809    $size = media_image_preview_size($image, $rev, $meta);
810
811    if ($size) {
812        $more = '';
813        if ($rev) {
814            $more = "rev=$rev";
815        } else {
816            $t = @filemtime(mediaFN($image));
817            $more = "t=$t";
818        }
819
820        $more .= '&w='.$size[0].'&h='.$size[1];
821
822        $src = ml($image, $more);
823        echo '<img src="'.$src.'" alt="'.$image.'" style="max-width: '.$size[0].'px;" />';
824    }
825
826    echo '</div>';
827}
828
829/**
830 * Prints mediafile action buttons
831 *
832 * @author Kate Arzamastseva <pshns@ukr.net>
833 */
834function media_preview_buttons($image, $auth, $rev=false) {
835    global $lang;
836
837    echo '<div id="mediamanager__preview_buttons">';
838
839    $more = '';
840    if ($rev) {
841        $more = "rev=$rev";
842    } else {
843        $t = @filemtime(mediaFN($image));
844        $more = "t=$t";
845    }
846    $link = ml($image,$more,true,'&');
847
848    // view original file button
849    $form = new Doku_Form(array('action'=>$link, 'target'=>'_blank'));
850    $form->addElement(form_makeButton('submit','',$lang['mediaview']));
851    $form->printForm();
852
853    if($auth >= AUTH_DELETE && !$rev){
854
855        // delete button
856        $form = new Doku_Form(array('id' => 'mediamanager__btn_delete',
857            'action'=>media_managerURL(array('delete' => $image), '&')));
858        $form->addElement(form_makeButton('submit','',$lang['btn_delete']));
859        $form->printForm();
860
861        // upload new version button
862        $form = new Doku_Form(array('id' => 'mediamanager__btn_update',
863            'action'=>media_managerURL(array('image' => $image, 'mediado' => 'update'), '&')));
864        $form->addElement(form_makeButton('submit','',$lang['media_update']));
865        $form->printForm();
866    }
867
868    if($auth >= AUTH_DELETE && $rev){
869
870        // restore button
871        $form = new Doku_Form(array('id' => 'mediamanager__btn_restore',
872            'action'=>media_managerURL(array('image' => $image), '&')));
873        $form->addHidden('mediado','restore');
874        $form->addHidden('rev',$rev);
875        $form->addElement(form_makeButton('submit','',$lang['media_restore']));
876        $form->printForm();
877    }
878
879    echo '</div>';
880}
881
882/**
883 * Returns image width and height for mediamanager preview panel
884 *
885 * @author Kate Arzamastseva <pshns@ukr.net>
886 * @param string $image
887 * @param int $rev
888 * @param JpegMeta $meta
889 * @return array
890 */
891function media_image_preview_size($image, $rev, $meta) {
892    if (!preg_match("/\.(jpe?g|gif|png)$/", $image)) return false;
893
894    $info = getimagesize(mediaFN($image, $rev));
895    $w = (int) $info[0];
896    $h = (int) $info[1];
897
898    $size = 500;
899    if($meta && ($w > $size || $h > $size)){
900        $ratio = $meta->getResizeRatio($size, $size);
901        $w = floor($w * $ratio);
902        $h = floor($h * $ratio);
903    }
904    return array($w, $h);
905}
906
907/**
908 * Returns the requested EXIF/IPTC tag from the image meta
909 *
910 * @author Kate Arzamastseva <pshns@ukr.net>
911 * @param array $tags
912 * @param JpegMeta $meta
913 * @param string $alt
914 * @return string
915 */
916function media_getTag($tags,$meta,$alt=''){
917    if($meta === false) return $alt;
918    $info = $meta->getField($tags);
919    if($info == false) return $alt;
920    return $info;
921}
922
923/**
924 * Returns mediafile tags
925 *
926 * @author Kate Arzamastseva <pshns@ukr.net>
927 * @param JpegMeta $meta
928 * @return array
929 */
930function media_file_tags($meta) {
931    global $config_cascade;
932
933    // load the field descriptions
934    static $fields = null;
935    if(is_null($fields)){
936        $config_files = getConfigFiles('mediameta');
937        foreach ($config_files as $config_file) {
938            if(@file_exists($config_file)) include($config_file);
939        }
940    }
941
942    $tags = array();
943
944    foreach($fields as $key => $tag){
945        $t = array();
946        if (!empty($tag[0])) $t = array($tag[0]);
947        if(is_array($tag[3])) $t = array_merge($t,$tag[3]);
948        $value = media_getTag($t, $meta);
949        $tags[] = array('tag' => $tag, 'value' => $value);
950    }
951
952    return $tags;
953}
954
955/**
956 * Prints mediafile tags
957 *
958 * @author Kate Arzamastseva <pshns@ukr.net>
959 */
960function media_details($image, $auth, $rev=false, $meta=false) {
961    global $lang;
962
963    if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev));
964    $tags = media_file_tags($meta);
965
966    echo '<dl class="img_tags">';
967    foreach($tags as $tag){
968        if ($tag['value']) {
969            $value = cleanText($tag['value']);
970            echo '<dt>'.$lang[$tag['tag'][1]].':</dt><dd>';
971            if ($tag['tag'][2] == 'date') echo dformat($value);
972            else echo hsc($value);
973            echo '</dd>';
974        }
975    }
976    echo '</dl>';
977}
978
979/**
980 * Shows difference between two revisions of file
981 *
982 * @author Kate Arzamastseva <pshns@ukr.net>
983 */
984function media_diff($image, $ns, $auth) {
985    global $lang;
986    global $conf;
987
988    $rev1 = (int) $_REQUEST['rev'];
989
990    if(is_array($_REQUEST['rev2'])){
991        $rev1 = (int) $_REQUEST['rev2'][0];
992        $rev2 = (int) $_REQUEST['rev2'][1];
993
994        if(!$rev1){
995            $rev1 = $rev2;
996            unset($rev2);
997        }
998    }else{
999        $rev2 = (int) $_REQUEST['rev2'];
1000    }
1001    if($rev1 && $rev2){            // two specific revisions wanted
1002        // make sure order is correct (older on the left)
1003        if($rev1 < $rev2){
1004            $l_rev = $rev1;
1005            $r_rev = $rev2;
1006        }else{
1007            $l_rev = $rev2;
1008            $r_rev = $rev1;
1009        }
1010    }elseif($rev1){                // single revision given, compare to current
1011        $r_rev = '';
1012        $l_rev = $rev1;
1013    }else{                        // no revision was given, compare previous to current
1014        $r_rev = '';
1015        $revs = getRevisions($image, 0, 1, 8192, true);
1016        $l_rev = $revs[0];
1017    }
1018
1019    // prepare event data
1020    $data[0] = $image;
1021    $data[1] = $l_rev;
1022    $data[2] = $r_rev;
1023    $data[3] = $ns;
1024    $data[4] = $auth;
1025
1026    // trigger event
1027    return trigger_event('MEDIA_DIFF', $data, '_media_file_diff', true);
1028
1029}
1030
1031function _media_file_diff($data) {
1032    if(is_array($data) && count($data)===5) {
1033        return media_file_diff($data[0], $data[1], $data[2], $data[3], $data[4]);
1034    } else {
1035        return false;
1036    }
1037}
1038
1039/**
1040 * Shows difference between two revisions of image
1041 *
1042 * @author Kate Arzamastseva <pshns@ukr.net>
1043 */
1044function media_file_diff($image, $l_rev, $r_rev, $ns, $auth){
1045    global $lang, $config_cascade;
1046
1047    echo '<ul id="mediamanager__diff_table">';
1048
1049    echo '<li>';
1050    media_preview($image, $auth, $l_rev, $l_meta);
1051    echo '</li>';
1052
1053    echo '<li>';
1054    media_preview($image, $auth, $r_rev, $r_meta);
1055    echo '</li>';
1056
1057    echo '<li>';
1058    media_preview_buttons($image, $auth, $l_rev);
1059    echo '</li>';
1060
1061    echo '<li>';
1062    media_preview_buttons($image, $auth, $r_rev);
1063    echo '</li>';
1064
1065    $l_meta = new JpegMeta(mediaFN($image, $l_rev));
1066    $r_meta = new JpegMeta(mediaFN($image, $r_rev));
1067
1068    $l_tags = media_file_tags($l_meta);
1069    $r_tags = media_file_tags($r_meta);
1070    foreach ($l_tags as $key => $l_tag) {
1071        if ($l_tag['value'] != $r_tags[$key]['value']) {
1072            $r_tags[$key]['class'] = 'highlighted';
1073            $l_tags[$key]['class'] = 'highlighted';
1074        } else if (!$l_tag['value'] || !$r_tags[$key]['value']) {
1075            unset($r_tags[$key]);
1076            unset($l_tags[$key]);
1077        }
1078    }
1079
1080    foreach(array($l_tags,$r_tags) as $tags){
1081        echo '<li><div>';
1082
1083        echo '<dl class="img_tags">';
1084        foreach($tags as $tag){
1085            $value = cleanText($tag['value']);
1086            if (!$value) $value = '-';
1087            echo '<dt>'.$lang[$tag['tag'][1]].':</dt>';
1088            echo '<dd class="'.$tag['class'].'" >';
1089            if ($tag['tag'][2] == 'date') echo dformat($value);
1090            else echo hsc($value);
1091            echo '</dd>';
1092        }
1093        echo '</dl>';
1094
1095        echo '</div></li>';
1096    }
1097
1098    echo '</ul>';
1099
1100    media_image_diff($image, $l_rev, $r_rev, $l_meta, 'opacity');
1101    media_image_diff($image, $l_rev, $r_rev, $l_meta, 'portions');
1102}
1103
1104/**
1105 * Prints two images side by side
1106 * and slider
1107 *
1108 * @author Kate Arzamastseva <pshns@ukr.net>
1109 * @param string $image
1110 * @param int $l_rev
1111 * @param int $r_rev
1112 * @param JpegMeta $meta
1113 */
1114function media_image_diff($image, $l_rev, $r_rev, $meta, $type) {
1115    $l_size = media_image_preview_size($image, $l_rev, $meta);
1116    $r_size = media_image_preview_size($image, $r_rev, $meta);
1117
1118    if (!$l_size || !$r_size || $l_size != $r_size || $l_size[0] < 30) return '';
1119
1120    echo '<div class="mediamanager-preview">';
1121
1122    $l_more = 'rev='.$l_rev.'&h='.$l_size[1].'&w='.$l_size[0];
1123    $r_more = 'rev='.$r_rev.'&h='.$l_size[1].'&w='.$l_size[0];
1124
1125    $l_src = ml($image, $l_more);
1126    $r_src = ml($image, $r_more);
1127
1128    echo '<div id="mediamanager__diff_'.$type.'_image1" style="background-image: url(\''.$l_src.'\'); max-width: '.$l_size[0].'px; height: '.$l_size[1].'px; " >';
1129    echo '<div id="mediamanager__diff_'.$type.'_image2" style="background-image: url(\''.$r_src.'\'); max-width: '.$l_size[0].'px; height: '.$l_size[1].'px; " >';
1130    echo '</div>';
1131    echo '</div>';
1132
1133    echo '<div id="mediamanager__'.$type.'_slider" style="max-width: '.($l_size[0]-20).'px;" ></div>';
1134    echo '</div>';
1135}
1136
1137/**
1138 * Restores an old revision of a media file
1139 *
1140 * @param string $image
1141 * @param int $rev
1142 * @param int $auth
1143 * @return string - file's id
1144 * @author Kate Arzamastseva <pshns@ukr.net>
1145 */
1146function media_restore($image, $rev, $auth){
1147    if ($auth < AUTH_DELETE) return false;
1148    if (!$image || !file_exists(mediaFN($image))) return false;
1149    if (!$rev || !file_exists(mediaFN($image, $rev))) return false;
1150    list($iext,$imime,$dl) = mimetype($image);
1151    $res = media_upload_finish(mediaFN($image, $rev),
1152        mediaFN($image),
1153        $image,
1154        $imime,
1155        true,
1156        'copy');
1157    if (is_array($res)) {
1158        msg($res[0], $res[1]);
1159        return false;
1160    }
1161    return $res;
1162}
1163
1164/**
1165 * List all files found by the search request
1166 *
1167 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1168 * @author Andreas Gohr <gohr@cosmocode.de>
1169 * @author Kate Arzamastseva <pshns@ukr.net>
1170 * @triggers MEDIA_SEARCH
1171 */
1172function media_searchlist($query,$ns,$auth=null,$fullscreen=false){
1173    global $conf;
1174    global $lang;
1175
1176    $ns = cleanID($ns);
1177
1178    if ($query) {
1179        $evdata = array(
1180                'ns'    => $ns,
1181                'data'  => array(),
1182                'query' => $query
1183                );
1184        $evt = new Doku_Event('MEDIA_SEARCH', $evdata);
1185        if ($evt->advise_before()) {
1186            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
1187            $pattern = '/'.preg_quote($evdata['query'],'/').'/i';
1188            search($evdata['data'],
1189                    $conf['mediadir'],
1190                    'search_media',
1191                    array('showmsg'=>false,'pattern'=>$pattern),
1192                    $dir);
1193        }
1194        $evt->advise_after();
1195        unset($evt);
1196    }
1197
1198    if (!$fullscreen) {
1199        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
1200        media_searchform($ns,$query);
1201    }
1202
1203    if(!count($evdata['data'])){
1204        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
1205    }else foreach($evdata['data'] as $item){
1206        if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
1207        else media_printfile_thumbs($item,$item['perm']);
1208    }
1209}
1210
1211/**
1212 * Print action links for a file depending on filetype
1213 * and available permissions
1214 */
1215function media_fileactions($item,$auth){
1216    global $lang;
1217
1218    // view button
1219    $link = ml($item['id'],'',true);
1220    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
1221        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
1222
1223    // no further actions if not writable
1224    if(!$item['writable']) return;
1225
1226    // delete button
1227    if($auth >= AUTH_DELETE){
1228        $link = DOKU_BASE.'lib/exe/mediamanager.php?delete='.rawurlencode($item['id']).
1229            '&amp;sectok='.getSecurityToken();
1230        echo ' <a href="'.$link.'" class="btn_media_delete" title="'.$item['id'].'">'.
1231            '<img src="'.DOKU_BASE.'lib/images/trash.png" alt="'.$lang['btn_delete'].'" '.
1232            'title="'.$lang['btn_delete'].'" class="btn" /></a>';
1233    }
1234
1235    // edit button
1236    if($auth >= AUTH_UPLOAD && $item['isimg'] && $item['meta']->getField('File.Mime') == 'image/jpeg'){
1237        $link = DOKU_BASE.'lib/exe/mediamanager.php?edit='.rawurlencode($item['id']);
1238        echo ' <a href="'.$link.'">'.
1239            '<img src="'.DOKU_BASE.'lib/images/pencil.png" alt="'.$lang['metaedit'].'" '.
1240            'title="'.$lang['metaedit'].'" class="btn" /></a>';
1241    }
1242
1243}
1244
1245/**
1246 * Formats and prints one file in the list
1247 */
1248function media_printfile($item,$auth,$jump,$display_namespace=false){
1249    global $lang;
1250    global $conf;
1251
1252    // Prepare zebra coloring
1253    // I always wanted to use this variable name :-D
1254    static $twibble = 1;
1255    $twibble *= -1;
1256    $zebra = ($twibble == -1) ? 'odd' : 'even';
1257
1258    // Automatically jump to recent action
1259    if($jump == $item['id']) {
1260        $jump = ' id="scroll__here" ';
1261    }else{
1262        $jump = '';
1263    }
1264
1265    // Prepare fileicons
1266    list($ext,$mime,$dl) = mimetype($item['file'],false);
1267    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
1268    $class = 'select mediafile mf_'.$class;
1269
1270    // Prepare filename
1271    $file = utf8_decodeFN($item['file']);
1272
1273    // Prepare info
1274    $info = '';
1275    if($item['isimg']){
1276        $info .= (int) $item['meta']->getField('File.Width');
1277        $info .= '&#215;';
1278        $info .= (int) $item['meta']->getField('File.Height');
1279        $info .= ' ';
1280    }
1281    $info .= '<i>'.dformat($item['mtime']).'</i>';
1282    $info .= ' ';
1283    $info .= filesize_h($item['size']);
1284
1285    // output
1286    echo '<div class="'.$zebra.'"'.$jump.'>'.NL;
1287    if (!$display_namespace) {
1288        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
1289    } else {
1290        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
1291    }
1292    echo '<span class="info">('.$info.')</span>'.NL;
1293    media_fileactions($item,$auth);
1294    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
1295    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
1296    echo '</div>';
1297    if($item['isimg']) media_printimgdetail($item);
1298    echo '<div class="clearer"></div>'.NL;
1299    echo '</div>'.NL;
1300}
1301
1302function media_printicon($filename){
1303    list($ext,$mime,$dl) = mimetype(mediaFN($filename),false);
1304
1305    if (@file_exists(DOKU_INC.'lib/images/fileicons/'.$ext.'.png')) {
1306        $icon = DOKU_BASE.'lib/images/fileicons/'.$ext.'.png';
1307    } else {
1308        $icon = DOKU_BASE.'lib/images/fileicons/file.png';
1309    }
1310
1311    echo '<img src="'.$icon.'" alt="'.$filename.'" class="icon" />';
1312
1313}
1314
1315/**
1316 * Formats and prints one file in the list in the thumbnails view
1317 *
1318 * @author Kate Arzamastseva <pshns@ukr.net>
1319 */
1320function media_printfile_thumbs($item,$auth,$jump=false){
1321    global $lang;
1322    global $conf;
1323
1324    // Prepare filename
1325    $file = utf8_decodeFN($item['file']);
1326
1327    // output
1328    echo '<li><div>';
1329
1330    if($item['isimg']) {
1331        media_printimgdetail($item, true);
1332
1333    } else {
1334        echo '<a name="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1335            media_managerURL(array('image' => hsc($item['id']))).'"><div>';
1336        media_printicon($item['id']);
1337        echo '</div></a>';
1338    }
1339    //echo '<input type=checkbox />';
1340    echo '<a href="'.media_managerURL(array('image' => hsc($item['id']))).'" name=
1341        "h_:'.$item['id'].'" class="name">'.hsc($file).'</a>';
1342    if($item['isimg']){
1343        $size = '';
1344        $size .= (int) $item['meta']->getField('File.Width');
1345        $size .= '&#215;';
1346        $size .= (int) $item['meta']->getField('File.Height');
1347        echo '<span class="size">'.$size.'</span>';
1348    } else {
1349        echo '<span class="size">&nbsp;</span>';
1350    }
1351    $date = dformat($item['mtime']);
1352    echo '<span class="date">'.$date.'</span>';
1353    $filesize = filesize_h($item['size']);
1354    echo '<span class="filesize">'.$filesize.'</span>';
1355    echo '<div class="clearer"></div>';
1356    echo '</div></li>'.NL;
1357}
1358
1359/**
1360 * Prints a thumbnail and metainfos
1361 */
1362function media_printimgdetail($item, $fullscreen=false){
1363    // prepare thumbnail
1364    if (!$fullscreen) $size = 120;
1365    else $size = 90;
1366    $w = (int) $item['meta']->getField('File.Width');
1367    $h = (int) $item['meta']->getField('File.Height');
1368    if($w>$size || $h>$size){
1369        if (!$fullscreen) {
1370            $ratio = $item['meta']->getResizeRatio($size);
1371        } else {
1372            $ratio = $item['meta']->getResizeRatio($size,$size);
1373        }
1374        $w = floor($w * $ratio);
1375        $h = floor($h * $ratio);
1376    }
1377    $src = ml($item['id'],array('w'=>$w,'h'=>$h,'t'=>$item['mtime']));
1378    $p = array();
1379    $p['width']  = $w;
1380    if (!$fullscreen) $p['height'] = $h;
1381    $p['alt']    = $item['id'];
1382    $p['class']  = 'thumb';
1383    $att = buildAttributes($p);
1384
1385    // output
1386    if ($fullscreen) {
1387        echo '<a name="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1388            media_managerURL(array('image' => hsc($item['id']))).'">';
1389        echo '<div><img src="'.$src.'" '.$att.' /></div>';
1390        echo '</a>';
1391        return 1;
1392    }
1393
1394    echo '<div class="detail">';
1395    echo '<div class="thumb">';
1396    echo '<a name="d_:'.$item['id'].'" class="select">';
1397    echo '<img src="'.$src.'" '.$att.' />';
1398    echo '</a>';
1399    echo '</div>';
1400
1401    // read EXIF/IPTC data
1402    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
1403    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
1404                'EXIF.TIFFImageDescription',
1405                'EXIF.TIFFUserComment'));
1406    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
1407    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
1408
1409    // print EXIF/IPTC data
1410    if($t || $d || $k ){
1411        echo '<p>';
1412        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
1413        if($d) echo htmlspecialchars($d).'<br />';
1414        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
1415        echo '</p>';
1416    }
1417    echo '</div>';
1418}
1419
1420/**
1421 * Build link based on the current, adding/rewriting
1422 * parameters
1423 *
1424 * @author Kate Arzamastseva <pshns@ukr.net>
1425 * @param array $params
1426 * @param string $amp - separator
1427 * @return string - link
1428 */
1429function media_managerURL($params=false, $amp='&amp;') {
1430    global $conf;
1431    global $ID;
1432
1433    $gets = array('do' => 'media');
1434    $media_manager_params = array('tab_files', 'tab_details', 'image', 'ns', 'view');
1435    foreach ($media_manager_params as $x) {
1436        if (isset($_REQUEST[$x])) $gets[$x] = $_REQUEST[$x];
1437    }
1438
1439    if ($params) {
1440        foreach ($params as $k => $v) {
1441            $gets[$k] = $v;
1442        }
1443    }
1444    unset($gets['id']);
1445    if ($gets['delete']) {
1446        unset($gets['image']);
1447        unset($gets['tab_details']);
1448    }
1449
1450    return wl($ID,$gets,false,$amp);
1451}
1452
1453/**
1454 * Print the media upload form if permissions are correct
1455 *
1456 * @author Andreas Gohr <andi@splitbrain.org>
1457 * @author Kate Arzamastseva <pshns@ukr.net>
1458 */
1459function media_uploadform($ns, $auth, $fullscreen = false){
1460    global $lang;
1461
1462    if($auth < AUTH_UPLOAD) {
1463        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
1464        return;
1465    }
1466
1467    $update = false;
1468    $id = '';
1469    if ($auth >= AUTH_DELETE && $fullscreen && $_REQUEST['mediado'] == 'update') {
1470        $update = true;
1471        $id = cleanID($_REQUEST['image']);
1472    }
1473
1474    // The default HTML upload form
1475    $params = array('id'      => 'dw__upload',
1476                    'enctype' => 'multipart/form-data');
1477    if (!$fullscreen) {
1478        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1479    } else {
1480        $params['action'] = media_managerURL(array('tab_files' => 'files',
1481            'tab_details' => 'view'), '&');
1482    }
1483
1484    $form = new Doku_Form($params);
1485    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediaupload'] . '</div>');
1486    $form->addElement(formSecurityToken());
1487    $form->addHidden('ns', hsc($ns));
1488    $form->addElement(form_makeOpenTag('p'));
1489    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
1490    $form->addElement(form_makeCloseTag('p'));
1491    $form->addElement(form_makeOpenTag('p'));
1492    $form->addElement(form_makeTextField('mediaid', noNS($id), $lang['txt_filename'].':', 'upload__name'));
1493    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
1494    $form->addElement(form_makeCloseTag('p'));
1495
1496    if($auth >= AUTH_DELETE){
1497        $form->addElement(form_makeOpenTag('p'));
1498        $attrs = array();
1499        if ($update) $attrs['checked'] = 'checked';
1500        $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check', $attrs));
1501        $form->addElement(form_makeCloseTag('p'));
1502    }
1503    html_form('upload', $form);
1504
1505    // prepare flashvars for multiupload
1506    $opt = array(
1507            'L_gridname'  => $lang['mu_gridname'] ,
1508            'L_gridsize'  => $lang['mu_gridsize'] ,
1509            'L_gridstat'  => $lang['mu_gridstat'] ,
1510            'L_namespace' => $lang['mu_namespace'] ,
1511            'L_overwrite' => $lang['txt_overwrt'],
1512            'L_browse'    => $lang['mu_browse'],
1513            'L_upload'    => $lang['btn_upload'],
1514            'L_toobig'    => $lang['mu_toobig'],
1515            'L_ready'     => $lang['mu_ready'],
1516            'L_done'      => $lang['mu_done'],
1517            'L_fail'      => $lang['mu_fail'],
1518            'L_authfail'  => $lang['mu_authfail'],
1519            'L_progress'  => $lang['mu_progress'],
1520            'L_filetypes' => $lang['mu_filetypes'],
1521            'L_info'      => $lang['mu_info'],
1522            'L_lasterr'   => $lang['mu_lasterr'],
1523
1524            'O_ns'        => ":$ns",
1525            'O_backend'   => 'mediamanager.php?'.session_name().'='.session_id(),
1526            'O_maxsize'   => php_to_byte(ini_get('upload_max_filesize')),
1527            'O_extensions'=> join('|',array_keys(getMimeTypes())),
1528            'O_overwrite' => ($auth >= AUTH_DELETE),
1529            'O_sectok'    => getSecurityToken(),
1530            'O_authtok'   => auth_createToken(),
1531            );
1532    $var = buildURLparams($opt);
1533    // output the flash uploader
1534    ?>
1535        <div id="dw__flashupload" style="display:none">
1536        <div class="upload"><?php echo $lang['mu_intro']?></div>
1537        <?php echo html_flashobject('multipleUpload.swf','500','190',null,$opt); ?>
1538        </div>
1539        <?php
1540}
1541
1542/**
1543 * Print the search field form
1544 *
1545 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1546 * @author Kate Arzamastseva <pshns@ukr.net>
1547 */
1548function media_searchform($ns,$query='',$fullscreen=false){
1549    global $lang;
1550
1551    // The default HTML search form
1552    $params = array('id' => 'dw__mediasearch');
1553    if (!$fullscreen) $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1554    else $params['action'] = media_managerURL(array(), '&');
1555    $form = new Doku_Form($params);
1556    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediasearch'] . '</div>');
1557    $form->addElement(formSecurityToken());
1558    $form->addHidden('ns', $ns);
1559    if (!$fullscreen) $form->addHidden('do', 'searchlist');
1560    else $form->addHidden('mediado', 'searchlist');
1561    $form->addElement(form_makeOpenTag('p'));
1562    $form->addElement(form_makeTextField('q', $query,$lang['searchmedia'],'','',array('title'=>sprintf($lang['searchmedia_in'],hsc($ns).':*'))));
1563    $form->addElement(form_makeButton('submit', '', $lang['btn_search']));
1564    $form->addElement(form_makeCloseTag('p'));
1565    html_form('searchmedia', $form);
1566}
1567
1568/**
1569 * Build a tree outline of available media namespaces
1570 *
1571 * @author Andreas Gohr <andi@splitbrain.org>
1572 */
1573function media_nstree($ns){
1574    global $conf;
1575    global $lang;
1576
1577    // currently selected namespace
1578    $ns  = cleanID($ns);
1579    if(empty($ns)){
1580        global $ID;
1581        $ns = dirname(str_replace(':','/',$ID));
1582        if($ns == '.') $ns ='';
1583    }
1584    $ns  = utf8_encodeFN(str_replace(':','/',$ns));
1585
1586    $data = array();
1587    search($data,$conf['mediadir'],'search_index',array('ns' => $ns, 'nofiles' => true));
1588
1589    // wrap a list with the root level around the other namespaces
1590    array_unshift($data, array('level' => 0, 'id' => '', 'open' =>'true',
1591                               'label' => '['.$lang['mediaroot'].']'));
1592
1593    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
1594}
1595
1596/**
1597 * Userfunction for html_buildlist
1598 *
1599 * Prints a media namespace tree item
1600 *
1601 * @author Andreas Gohr <andi@splitbrain.org>
1602 */
1603function media_nstree_item($item){
1604    $pos   = strrpos($item['id'], ':');
1605    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
1606    if(!$item['label']) $item['label'] = $label;
1607
1608    $ret  = '';
1609    if (!($_REQUEST['do'] == 'media'))
1610    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
1611    else $ret .= '<a href="'.media_managerURL(array('ns' => idfilter($item['id']), 'tab_files' => 'files'))
1612        .'" class="idx_dir">';
1613    $ret .= $item['label'];
1614    $ret .= '</a>';
1615    return $ret;
1616}
1617
1618/**
1619 * Userfunction for html_buildlist
1620 *
1621 * Prints a media namespace tree item opener
1622 *
1623 * @author Andreas Gohr <andi@splitbrain.org>
1624 */
1625function media_nstree_li($item){
1626    $class='media level'.$item['level'];
1627    if($item['open']){
1628        $class .= ' open';
1629        $img   = DOKU_BASE.'lib/images/minus.gif';
1630        $alt   = '&minus;';
1631    }else{
1632        $class .= ' closed';
1633        $img   = DOKU_BASE.'lib/images/plus.gif';
1634        $alt   = '+';
1635    }
1636    // TODO: only deliver an image if it actually has a subtree...
1637    return '<li class="'.$class.'">'.
1638        '<img src="'.$img.'" alt="'.$alt.'" />';
1639}
1640
1641/**
1642 * Resizes the given image to the given size
1643 *
1644 * @author  Andreas Gohr <andi@splitbrain.org>
1645 */
1646function media_resize_image($file, $ext, $w, $h=0){
1647    global $conf;
1648
1649    $info = @getimagesize($file); //get original size
1650    if($info == false) return $file; // that's no image - it's a spaceship!
1651
1652    if(!$h) $h = round(($w * $info[1]) / $info[0]);
1653
1654    // we wont scale up to infinity
1655    if($w > 2000 || $h > 2000) return $file;
1656
1657    //cache
1658    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
1659    $mtime = @filemtime($local); // 0 if not exists
1660
1661    if( $mtime > filemtime($file) ||
1662            media_resize_imageIM($ext,$file,$info[0],$info[1],$local,$w,$h) ||
1663            media_resize_imageGD($ext,$file,$info[0],$info[1],$local,$w,$h) ){
1664        if($conf['fperm']) chmod($local, $conf['fperm']);
1665        return $local;
1666    }
1667    //still here? resizing failed
1668    return $file;
1669}
1670
1671/**
1672 * Crops the given image to the wanted ratio, then calls media_resize_image to scale it
1673 * to the wanted size
1674 *
1675 * Crops are centered horizontally but prefer the upper third of an vertical
1676 * image because most pics are more interesting in that area (rule of thirds)
1677 *
1678 * @author  Andreas Gohr <andi@splitbrain.org>
1679 */
1680function media_crop_image($file, $ext, $w, $h=0){
1681    global $conf;
1682
1683    if(!$h) $h = $w;
1684    $info = @getimagesize($file); //get original size
1685    if($info == false) return $file; // that's no image - it's a spaceship!
1686
1687    // calculate crop size
1688    $fr = $info[0]/$info[1];
1689    $tr = $w/$h;
1690    if($tr >= 1){
1691        if($tr > $fr){
1692            $cw = $info[0];
1693            $ch = (int) $info[0]/$tr;
1694        }else{
1695            $cw = (int) $info[1]*$tr;
1696            $ch = $info[1];
1697        }
1698    }else{
1699        if($tr < $fr){
1700            $cw = (int) $info[1]*$tr;
1701            $ch = $info[1];
1702        }else{
1703            $cw = $info[0];
1704            $ch = (int) $info[0]/$tr;
1705        }
1706    }
1707    // calculate crop offset
1708    $cx = (int) ($info[0]-$cw)/2;
1709    $cy = (int) ($info[1]-$ch)/3;
1710
1711    //cache
1712    $local = getCacheName($file,'.media.'.$cw.'x'.$ch.'.crop.'.$ext);
1713    $mtime = @filemtime($local); // 0 if not exists
1714
1715    if( $mtime > filemtime($file) ||
1716            media_crop_imageIM($ext,$file,$info[0],$info[1],$local,$cw,$ch,$cx,$cy) ||
1717            media_resize_imageGD($ext,$file,$cw,$ch,$local,$cw,$ch,$cx,$cy) ){
1718        if($conf['fperm']) chmod($local, $conf['fperm']);
1719        return media_resize_image($local,$ext, $w, $h);
1720    }
1721
1722    //still here? cropping failed
1723    return media_resize_image($file,$ext, $w, $h);
1724}
1725
1726/**
1727 * Download a remote file and return local filename
1728 *
1729 * returns false if download fails. Uses cached file if available and
1730 * wanted
1731 *
1732 * @author  Andreas Gohr <andi@splitbrain.org>
1733 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
1734 */
1735function media_get_from_URL($url,$ext,$cache){
1736    global $conf;
1737
1738    // if no cache or fetchsize just redirect
1739    if ($cache==0)           return false;
1740    if (!$conf['fetchsize']) return false;
1741
1742    $local = getCacheName(strtolower($url),".media.$ext");
1743    $mtime = @filemtime($local); // 0 if not exists
1744
1745    //decide if download needed:
1746    if( ($mtime == 0) ||                           // cache does not exist
1747            ($cache != -1 && $mtime < time()-$cache)   // 'recache' and cache has expired
1748      ){
1749        if(media_image_download($url,$local)){
1750            return $local;
1751        }else{
1752            return false;
1753        }
1754    }
1755
1756    //if cache exists use it else
1757    if($mtime) return $local;
1758
1759    //else return false
1760    return false;
1761}
1762
1763/**
1764 * Download image files
1765 *
1766 * @author Andreas Gohr <andi@splitbrain.org>
1767 */
1768function media_image_download($url,$file){
1769    global $conf;
1770    $http = new DokuHTTPClient();
1771    $http->max_bodysize = $conf['fetchsize'];
1772    $http->timeout = 25; //max. 25 sec
1773    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
1774
1775    $data = $http->get($url);
1776    if(!$data) return false;
1777
1778    $fileexists = @file_exists($file);
1779    $fp = @fopen($file,"w");
1780    if(!$fp) return false;
1781    fwrite($fp,$data);
1782    fclose($fp);
1783    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
1784
1785    // check if it is really an image
1786    $info = @getimagesize($file);
1787    if(!$info){
1788        @unlink($file);
1789        return false;
1790    }
1791
1792    return true;
1793}
1794
1795/**
1796 * resize images using external ImageMagick convert program
1797 *
1798 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
1799 * @author Andreas Gohr <andi@splitbrain.org>
1800 */
1801function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
1802    global $conf;
1803
1804    // check if convert is configured
1805    if(!$conf['im_convert']) return false;
1806
1807    // prepare command
1808    $cmd  = $conf['im_convert'];
1809    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
1810    if ($ext == 'jpg' || $ext == 'jpeg') {
1811        $cmd .= ' -quality '.$conf['jpg_quality'];
1812    }
1813    $cmd .= " $from $to";
1814
1815    @exec($cmd,$out,$retval);
1816    if ($retval == 0) return true;
1817    return false;
1818}
1819
1820/**
1821 * crop images using external ImageMagick convert program
1822 *
1823 * @author Andreas Gohr <andi@splitbrain.org>
1824 */
1825function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
1826    global $conf;
1827
1828    // check if convert is configured
1829    if(!$conf['im_convert']) return false;
1830
1831    // prepare command
1832    $cmd  = $conf['im_convert'];
1833    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
1834    if ($ext == 'jpg' || $ext == 'jpeg') {
1835        $cmd .= ' -quality '.$conf['jpg_quality'];
1836    }
1837    $cmd .= " $from $to";
1838
1839    @exec($cmd,$out,$retval);
1840    if ($retval == 0) return true;
1841    return false;
1842}
1843
1844/**
1845 * resize or crop images using PHP's libGD support
1846 *
1847 * @author Andreas Gohr <andi@splitbrain.org>
1848 * @author Sebastian Wienecke <s_wienecke@web.de>
1849 */
1850function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
1851    global $conf;
1852
1853    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
1854
1855    // check available memory
1856    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
1857        return false;
1858    }
1859
1860    // create an image of the given filetype
1861    if ($ext == 'jpg' || $ext == 'jpeg'){
1862        if(!function_exists("imagecreatefromjpeg")) return false;
1863        $image = @imagecreatefromjpeg($from);
1864    }elseif($ext == 'png') {
1865        if(!function_exists("imagecreatefrompng")) return false;
1866        $image = @imagecreatefrompng($from);
1867
1868    }elseif($ext == 'gif') {
1869        if(!function_exists("imagecreatefromgif")) return false;
1870        $image = @imagecreatefromgif($from);
1871    }
1872    if(!$image) return false;
1873
1874    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
1875        $newimg = @imagecreatetruecolor ($to_w, $to_h);
1876    }
1877    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
1878    if(!$newimg){
1879        imagedestroy($image);
1880        return false;
1881    }
1882
1883    //keep png alpha channel if possible
1884    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
1885        imagealphablending($newimg, false);
1886        imagesavealpha($newimg,true);
1887    }
1888
1889    //keep gif transparent color if possible
1890    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
1891        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
1892            $transcolorindex = @imagecolortransparent($image);
1893            if($transcolorindex >= 0 ) { //transparent color exists
1894                $transcolor = @imagecolorsforindex($image, $transcolorindex);
1895                $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
1896                @imagefill($newimg, 0, 0, $transcolorindex);
1897                @imagecolortransparent($newimg, $transcolorindex);
1898            }else{ //filling with white
1899                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1900                @imagefill($newimg, 0, 0, $whitecolorindex);
1901            }
1902        }else{ //filling with white
1903            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1904            @imagefill($newimg, 0, 0, $whitecolorindex);
1905        }
1906    }
1907
1908    //try resampling first
1909    if(function_exists("imagecopyresampled")){
1910        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
1911            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1912        }
1913    }else{
1914        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1915    }
1916
1917    $okay = false;
1918    if ($ext == 'jpg' || $ext == 'jpeg'){
1919        if(!function_exists('imagejpeg')){
1920            $okay = false;
1921        }else{
1922            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
1923        }
1924    }elseif($ext == 'png') {
1925        if(!function_exists('imagepng')){
1926            $okay = false;
1927        }else{
1928            $okay =  imagepng($newimg, $to);
1929        }
1930    }elseif($ext == 'gif') {
1931        if(!function_exists('imagegif')){
1932            $okay = false;
1933        }else{
1934            $okay = imagegif($newimg, $to);
1935        }
1936    }
1937
1938    // destroy GD image ressources
1939    if($image) imagedestroy($image);
1940    if($newimg) imagedestroy($newimg);
1941
1942    return $okay;
1943}
1944
1945/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
1946