xref: /dokuwiki/inc/media.php (revision c439558b00bf5429e11461bc999b63a22f066ac1) 
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,$imime);
402        // add a log entry to the media changelog
403        if ($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){
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)),$text);
506
507    if(empty($conf['mailprefix'])) {
508        $subject = '['.$conf['title'].'] '.$lang['mail_upload'].' '.$id;
509    } else {
510        $subject = '['.$conf['mailprefix'].'] '.$lang['mail_upload'].' '.$id;
511    }
512
513    mail_send($conf['notify'],$subject,$text,$conf['mailfrom']);
514}
515
516/**
517 * List all files in a given Media namespace
518 */
519function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false){
520    global $conf;
521    global $lang;
522    $ns = cleanID($ns);
523
524    // check auth our self if not given (needed for ajax calls)
525    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
526
527    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
528
529    if($auth < AUTH_READ){
530        // FIXME: print permission warning here instead?
531        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
532    }else{
533        if (!$fullscreenview) media_uploadform($ns, $auth);
534
535        $dir = utf8_encodeFN(str_replace(':','/',$ns));
536        $data = array();
537        search($data,$conf['mediadir'],'search_media',
538                array('showmsg'=>true,'depth'=>1),$dir);
539
540        if(!count($data)){
541            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
542        }else foreach($data as $item){
543            if (!$fullscreenview) media_printfile($item,$auth,$jump);
544            else media_printfile_thumbs($item,$auth,$jump);
545        }
546    }
547    if (!$fullscreenview) media_searchform($ns);
548}
549
550/**
551 * Prints tabs for files list actions
552 *
553 * @author Kate Arzamastseva <pshns@ukr.net>
554 * @param string $selected - opened tab
555 */
556function media_tabs_files($selected=false){
557    global $lang;
558
559    echo '<div class="mediamanager-tabs" id="mediamanager__tabs_files">';
560
561    media_tab(media_managerURL(array('tab_files' => 'files')), 'files', $lang['mediaselect'], $selected);
562    media_tab(media_managerURL(array('tab_files' => 'upload')), 'upload', $lang['media_uploadtab'], $selected);
563    media_tab(media_managerURL(array('tab_files' => 'search')), 'search', $lang['media_searchtab'], $selected);
564
565    echo '<div class="clearer"></div>';
566    echo '</div>';
567}
568
569/**
570 * Prints mediamanager tab
571 *
572 * @author Kate Arzamastseva <pshns@ukr.net>
573 * @param string $link
574 * @param string $class
575 * @param string $name
576 * @param string $selected
577 */
578function media_tab($link, $class, $name, $selected=false) {
579    if (!empty($selected) && $selected == $class) $class .= ' selected';
580    $tab = '<a href="'.$link.'" class="'.$class.'" >'.$name.'</a>';
581    echo $tab;
582}
583
584/**
585 * Prints tabs for files details actions
586 *
587 * @author Kate Arzamastseva <pshns@ukr.net>
588 * @param string $selected - opened tab
589 */
590function media_tabs_details($image, $selected=false){
591    global $lang;
592
593    echo '<div class="mediamanager-tabs" id="mediamanager__tabs_details">';
594
595    media_tab(media_managerURL(array('tab_details' => 'view')), 'view', $lang['media_viewtab'], $selected);
596
597    list($ext, $mime) = mimetype($image);
598    if ($mime == 'image/jpeg') {
599        media_tab(media_managerURL(array('tab_details' => 'edit')), 'edit', $lang['media_edittab'], $selected);
600    }
601    media_tab(media_managerURL(array('tab_details' => 'history')), 'history', $lang['media_historytab'], $selected);
602
603    echo '<div class="clearer"></div>';
604    echo '</div>';
605}
606
607/**
608 * Prints options for the tab that displays a list of all files
609 *
610 * @author Kate Arzamastseva <pshns@ukr.net>
611 */
612function media_tab_files_options($ns){
613    global $lang;
614
615    echo '<div class="background-container">';
616    echo $ns;
617    echo '<div id="mediamanager__tabs_list" style="display: inline;">';
618    echo '<a href="'.media_managerURL(array('view' => 'thumbs')).'"
619        rel=".mediamanager-files-thumbnails-tab" class="mediamanager-link-thumbnails">'.
620        $lang['media_thumbsview'].'</a>';
621    echo '<a href="'.media_managerURL(array('view' => 'list')).'"
622        rel=".mediamanager-files-list-tab" class="mediamanager-link-list"
623        title="View as list">'.$lang['media_listview'].'</a>';
624
625    echo '</div>';
626    echo '<div class="mediamanager-block-sort">'.$lang['media_sort'];
627    //select
628    echo '</div>';
629    echo '<div class="clearer"></div>';
630    echo '</div>';
631}
632
633/**
634 * Prints tab that displays a list of all files
635 *
636 * @author Kate Arzamastseva <pshns@ukr.net>
637 */
638function media_tab_files($ns,$auth=null,$jump='') {
639    global $lang;
640    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
641
642    media_tab_files_options($ns);
643
644    echo '<div class="scroll-container" >';
645    $view = $_REQUEST['view'];
646    if($auth < AUTH_READ){
647        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
648    }else{
649        if ($view == 'list') {
650            echo '<ul class="mediamanager-file-list mediamanager-list" id="mediamanager__file_list">';
651        } else {
652            echo '<ul class="mediamanager-file-list mediamanager-thumbs" id="mediamanager__file_list">';
653        }
654        media_filelist($ns,$auth,$jump,true);
655        echo '</ul>';
656    }
657    echo '</div>';
658}
659
660/**
661 * Prints tab that displays uploading form
662 *
663 * @author Kate Arzamastseva <pshns@ukr.net>
664 */
665function media_tab_upload($ns,$auth=null,$jump='') {
666    global $lang;
667    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
668
669    echo '<div class="background-container">';
670    echo sprintf($lang['media_upload'], $ns);
671    echo '</div>';
672
673    echo '<div class="scroll-container">';
674    if ($auth >= AUTH_UPLOAD) echo '<div class="upload">' . $lang['mediaupload'] . '</div>';
675    media_uploadform($ns, $auth, true);
676    echo '</div>';
677}
678
679/**
680 * Prints tab that displays search form
681 *
682 * @author Kate Arzamastseva <pshns@ukr.net>
683 */
684function media_tab_search($ns,$auth=null) {
685    global $lang;
686
687    $do = $_REQUEST['mediado'];
688    $query = $_REQUEST['q'];
689    if (!$query) $query = '';
690
691    echo '<div class="background-container">';
692    echo sprintf($lang['media_search'], $ns);
693    echo'</div>';
694
695    echo '<div class="scroll-container">';
696    media_searchform($ns, $query, true);
697
698    if($do == 'searchlist'){
699        $view = $_REQUEST['view'];
700        if ($view == 'list') {
701            echo '<ul class="mediamanager-file-list mediamanager-list" id="mediamanager__file_list">';
702        } else {
703            echo '<ul class="mediamanager-file-list mediamanager-thumbs" id="mediamanager__file_list">';
704        }
705        media_searchlist($query,$ns,$auth,true);
706        echo '</ul>';
707    }
708    echo '</div>';
709}
710
711/**
712 * Prints tab that displays mediafile details
713 *
714 * @author Kate Arzamastseva <pshns@ukr.net>
715 */
716function media_tab_view($image, $ns, $auth=null, $rev=false) {
717    global $lang, $conf;
718    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
719
720    echo '<div class="background-container">';
721    list($ext,$mime,$dl) = mimetype($image,false);
722    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
723    $class = 'select mediafile mf_'.$class;
724    echo '<a class="'.$class.'" >'.$image.'</a>';
725    echo '</div>';
726
727    echo '<div class="scroll-container">';
728    $meta = new JpegMeta(mediaFN($image, $rev));
729    media_preview($image, $auth, $rev, $meta);
730    media_details($image, $auth, $rev, $meta);
731    echo '</div>';
732}
733
734/**
735 * Prints tab that displays form for editing mediafile metadata
736 *
737 * @author Kate Arzamastseva <pshns@ukr.net>
738 */
739function media_tab_edit($image, $ns, $auth=null) {
740    global $lang;
741    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
742
743    echo '<div class="background-container">';
744    echo $lang['media_edit'];
745    echo '</div>';
746
747    echo '<div class="scroll-container">';
748    if ($image) {
749        list($ext, $mime) = mimetype($image);
750        if ($mime == 'image/jpeg') media_metaform($image,$auth,true);
751    }
752    echo '</div>';
753}
754
755/**
756 * Prints tab that displays mediafile revisions
757 *
758 * @author Kate Arzamastseva <pshns@ukr.net>
759 */
760function media_tab_history($image, $ns, $auth=null) {
761    global $lang;
762    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
763    $do = $_REQUEST['mediado'];
764
765    echo '<div class="background-container">';
766    echo $lang['media_history'];
767    echo '</div>';
768
769    echo '<div class="scroll-container">';
770    if ($auth >= AUTH_READ && $image) {
771        if ($do == 'diff'){
772            media_diff($image, $ns, $auth);
773        } else {
774            $first = isset($_REQUEST['first']) ? intval($_REQUEST['first']) : 0;
775            html_revisions($first, $image);
776        }
777    } else {
778        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
779    }
780    echo '</div>';
781}
782
783/**
784 * Prints mediafile details
785 *
786 * @author Kate Arzamastseva <pshns@ukr.net>
787 */
788function media_preview($image, $auth, $rev=false, $meta=false) {
789    global $lang;
790    if (!$image) return '';
791    if ($auth < AUTH_READ) {
792        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
793        return '';
794    }
795
796    echo '<div class="mediamanager-preview">';
797
798    $more = '';
799    if ($rev) {
800        $more = "rev=$rev";
801    } else {
802        $t = @filemtime(mediaFN($image));
803        $more = "t=$t";
804    }
805    $link = ml($image,$more,true,'&');
806
807    if (preg_match("/\.(jpe?g|gif|png)$/", $image)) {
808        $info = getimagesize(mediaFN($image, $rev));
809        $w = (int) $info[0];
810        $h = (int) $info[1];
811
812        $size = 500;
813        if($meta && ($w > $size || $h > $size)){
814            $ratio = $meta->getResizeRatio($size, $size);
815            $w = floor($w * $ratio);
816            $h = floor($h * $ratio);
817            $more .= "&h=$h&w=$w";
818        }
819
820        $src = ml($image, $more);
821        echo '<img src="'.$src.'" alt="" width="99%" style="max-width: '.$w.'px;" /><br /><br />';
822    }
823
824    $form = new Doku_Form(array('action'=>$link, 'target'=>'_blank'));
825    $form->addElement(form_makeButton('submit','',$lang['mediaview']));
826    $form->printForm();
827
828    // delete button
829    if($auth >= AUTH_DELETE && !$rev){
830        $form = new Doku_Form(array('id' => 'mediamanager__btn_delete',
831            'action'=>media_managerURL(array('delete' => $image), '&')));
832        $form->addElement(form_makeButton('submit','',$lang['btn_delete']));
833        $form->printForm();
834
835        $form = new Doku_Form(array('id' => 'mediamanager__btn_update',
836            'action'=>media_managerURL(array('image' => $image, 'mediado' => 'update'), '&')));
837        $form->addElement(form_makeButton('submit','',$lang['media_update']));
838        $form->printForm();
839    }
840    if($auth >= AUTH_DELETE && $rev){
841        $form = new Doku_Form(array('id' => 'mediamanager__btn_restore',
842            'action'=>media_managerURL(array('image' => $image), '&')));
843        $form->addHidden('mediado','restore');
844        $form->addHidden('rev',$rev);
845        $form->addElement(form_makeButton('submit','',$lang['media_restore']));
846        $form->printForm();
847    }
848    echo '</div>';
849}
850
851/**
852 * Prints mediafile tags
853 *
854 * @author Kate Arzamastseva <pshns@ukr.net>
855 */
856function media_details($image, $auth, $rev=false, $meta=false) {
857    global $lang, $config_cascade;
858
859    if (!$image) return '';
860    if ($auth < AUTH_READ) {
861        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
862        return '';
863    }
864
865    // load the field descriptions
866    static $fields = null;
867    if(is_null($fields)){
868        $config_files = getConfigFiles('mediameta');
869        foreach ($config_files as $config_file) {
870            if(@file_exists($config_file)) include($config_file);
871        }
872    }
873
874    if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev));
875
876    echo '<dl class="img_tags">';
877    foreach($fields as $key => $tag){
878        $t = array();
879        if (!empty($tag[0])) $t = array($tag[0]);
880        if(is_array($tag[3])) $t = array_merge($t,$tag[3]);
881        $value = media_getTag($t, $meta, '-');
882        $value = cleanText($value);
883        echo '<dt>'.$lang[$tag[1]].':</dt><dd>';
884        if ($tag[2] == 'date') echo dformat($value);
885        else echo hsc($value);
886        echo '</dd>';
887    }
888    echo '</dl>';
889}
890
891/**
892 * Returns the requested EXIF/IPTC tag from the image meta
893 *
894 * @author Kate Arzamastseva <pshns@ukr.net>
895 * @param array $tags
896 * @param JpegMeta $meta
897 * @param string $alt
898 * @return string
899 */
900function media_getTag($tags,$meta,$alt=''){
901    if($meta === false) return $alt;
902    $info = $meta->getField($tags);
903    if($info == false) return $alt;
904    return $info;
905}
906
907/**
908 * Shows difference between two revisions of file
909 *
910 * @author Kate Arzamastseva <pshns@ukr.net>
911 */
912function media_diff($image, $ns, $auth) {
913    global $lang;
914    global $conf;
915
916    $rev1 = (int) $_REQUEST['rev'];
917
918    if(is_array($_REQUEST['rev2'])){
919        $rev1 = (int) $_REQUEST['rev2'][0];
920        $rev2 = (int) $_REQUEST['rev2'][1];
921
922        if(!$rev1){
923            $rev1 = $rev2;
924            unset($rev2);
925        }
926    }else{
927        $rev2 = (int) $_REQUEST['rev2'];
928    }
929    if($rev1 && $rev2){            // two specific revisions wanted
930        // make sure order is correct (older on the left)
931        if($rev1 < $rev2){
932            $l_rev = $rev1;
933            $r_rev = $rev2;
934        }else{
935            $l_rev = $rev2;
936            $r_rev = $rev1;
937        }
938    }elseif($rev1){                // single revision given, compare to current
939        $r_rev = '';
940        $l_rev = $rev1;
941    }else{                        // no revision was given, compare previous to current
942        $r_rev = '';
943        $revs = getRevisions($image, 0, 1, 8192, true);
944        $l_rev = $revs[0];
945    }
946
947    // prepare event data
948    $data[0] = $image;
949    $data[1] = $l_rev;
950    $data[2] = $r_rev;
951    $data[3] = $ns;
952    $data[4] = $auth;
953
954    // trigger event
955    return trigger_event('MEDIA_DIFF', $data, '_media_image_diff', true);
956
957}
958
959function _media_image_diff($data) {
960    if(is_array($data) && count($data)===5) {
961        return media_image_diff($data[0], $data[1], $data[2], $data[3], $data[4]);
962    } else {
963        return false;
964    }
965}
966
967/**
968 * Shows difference between two revisions of image
969 *
970 * @author Kate Arzamastseva <pshns@ukr.net>
971 */
972function media_image_diff($image, $l_rev, $r_rev, $ns, $auth){
973    $l_meta = new JpegMeta(mediaFN($image, $l_rev));
974    $r_meta = new JpegMeta(mediaFN($image, $r_rev));
975
976    echo '<ul class="mediamanager-table-50"><li><div>';
977    media_preview($image, $auth, $l_rev, $l_meta);
978    echo '</div></li>';
979    echo '<li><div>';
980    media_preview($image, $auth, $r_rev, $r_meta);
981    echo '</div></li><li><div>';
982    media_details($image, $auth, $l_rev, $l_meta);
983    echo '</div></li>';
984    echo '<li><div>';
985    media_details($image, $auth, $r_rev, $r_meta);
986    echo '</div></li></ul>';
987}
988
989/**
990 * Restores an old revision of a media file
991 *
992 * @param string $image
993 * @param int $rev
994 * @param int $auth
995 * @return string - file's id
996 * @author Kate Arzamastseva <pshns@ukr.net>
997 */
998function media_restore($image, $rev, $auth){
999    if ($auth < AUTH_DELETE) return false;
1000    if (!$image || !file_exists(mediaFN($image))) return false;
1001    if (!$rev || !file_exists(mediaFN($image, $rev))) return false;
1002    list($iext,$imime,$dl) = mimetype($image);
1003    $res = media_upload_finish(mediaFN($image, $rev),
1004        mediaFN($image),
1005        $image,
1006        $imime,
1007        true,
1008        'copy');
1009    if (is_array($res)) {
1010        msg($res[0], $res[1]);
1011        return false;
1012    }
1013    return $res;
1014}
1015
1016/**
1017 * List all files found by the search request
1018 *
1019 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1020 * @author Andreas Gohr <gohr@cosmocode.de>
1021 * @author Kate Arzamastseva <pshns@ukr.net>
1022 * @triggers MEDIA_SEARCH
1023 */
1024function media_searchlist($query,$ns,$auth=null,$fullscreen=false){
1025    global $conf;
1026    global $lang;
1027
1028    $ns = cleanID($ns);
1029
1030    if ($query) {
1031        $evdata = array(
1032                'ns'    => $ns,
1033                'data'  => array(),
1034                'query' => $query
1035                );
1036        $evt = new Doku_Event('MEDIA_SEARCH', $evdata);
1037        if ($evt->advise_before()) {
1038            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
1039            $pattern = '/'.preg_quote($evdata['query'],'/').'/i';
1040            search($evdata['data'],
1041                    $conf['mediadir'],
1042                    'search_media',
1043                    array('showmsg'=>false,'pattern'=>$pattern),
1044                    $dir);
1045        }
1046        $evt->advise_after();
1047        unset($evt);
1048    }
1049
1050    if (!$fullscreen) {
1051        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
1052        media_searchform($ns,$query);
1053    }
1054
1055    if(!count($evdata['data'])){
1056        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
1057    }else foreach($evdata['data'] as $item){
1058        if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
1059        else media_printfile_thumbs($item,$item['perm']);
1060    }
1061}
1062
1063/**
1064 * Print action links for a file depending on filetype
1065 * and available permissions
1066 */
1067function media_fileactions($item,$auth){
1068    global $lang;
1069
1070    // view button
1071    $link = ml($item['id'],'',true);
1072    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
1073        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
1074
1075    // no further actions if not writable
1076    if(!$item['writable']) return;
1077
1078    // delete button
1079    if($auth >= AUTH_DELETE){
1080        $link = DOKU_BASE.'lib/exe/mediamanager.php?delete='.rawurlencode($item['id']).
1081            '&amp;sectok='.getSecurityToken();
1082        echo ' <a href="'.$link.'" class="btn_media_delete" title="'.$item['id'].'">'.
1083            '<img src="'.DOKU_BASE.'lib/images/trash.png" alt="'.$lang['btn_delete'].'" '.
1084            'title="'.$lang['btn_delete'].'" class="btn" /></a>';
1085    }
1086
1087    // edit button
1088    if($auth >= AUTH_UPLOAD && $item['isimg'] && $item['meta']->getField('File.Mime') == 'image/jpeg'){
1089        $link = DOKU_BASE.'lib/exe/mediamanager.php?edit='.rawurlencode($item['id']);
1090        echo ' <a href="'.$link.'">'.
1091            '<img src="'.DOKU_BASE.'lib/images/pencil.png" alt="'.$lang['metaedit'].'" '.
1092            'title="'.$lang['metaedit'].'" class="btn" /></a>';
1093    }
1094
1095}
1096
1097/**
1098 * Formats and prints one file in the list
1099 */
1100function media_printfile($item,$auth,$jump,$display_namespace=false){
1101    global $lang;
1102    global $conf;
1103
1104    // Prepare zebra coloring
1105    // I always wanted to use this variable name :-D
1106    static $twibble = 1;
1107    $twibble *= -1;
1108    $zebra = ($twibble == -1) ? 'odd' : 'even';
1109
1110    // Automatically jump to recent action
1111    if($jump == $item['id']) {
1112        $jump = ' id="scroll__here" ';
1113    }else{
1114        $jump = '';
1115    }
1116
1117    // Prepare fileicons
1118    list($ext,$mime,$dl) = mimetype($item['file'],false);
1119    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
1120    $class = 'select mediafile mf_'.$class;
1121
1122    // Prepare filename
1123    $file = utf8_decodeFN($item['file']);
1124
1125    // Prepare info
1126    $info = '';
1127    if($item['isimg']){
1128        $info .= (int) $item['meta']->getField('File.Width');
1129        $info .= '&#215;';
1130        $info .= (int) $item['meta']->getField('File.Height');
1131        $info .= ' ';
1132    }
1133    $info .= '<i>'.dformat($item['mtime']).'</i>';
1134    $info .= ' ';
1135    $info .= filesize_h($item['size']);
1136
1137    // output
1138    echo '<div class="'.$zebra.'"'.$jump.'>'.NL;
1139    if (!$display_namespace) {
1140        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
1141    } else {
1142        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
1143    }
1144    echo '<span class="info">('.$info.')</span>'.NL;
1145    media_fileactions($item,$auth);
1146    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
1147    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
1148    echo '</div>';
1149    if($item['isimg']) media_printimgdetail($item);
1150    echo '<div class="clearer"></div>'.NL;
1151    echo '</div>'.NL;
1152}
1153
1154function media_printicon($filename){
1155    list($ext,$mime,$dl) = mimetype(mediaFN($filename),false);
1156
1157    if (@file_exists(DOKU_INC.'lib/images/fileicons/'.$ext.'.png')) {
1158        $icon = DOKU_BASE.'lib/images/fileicons/'.$ext.'.png';
1159    } else {
1160        $icon = DOKU_BASE.'lib/images/fileicons/file.png';
1161    }
1162
1163    echo '<img src="'.$icon.'" alt="'.$filename.'" class="icon" />';
1164
1165}
1166
1167/**
1168 * Formats and prints one file in the list in the thumbnails view
1169 *
1170 * @author Kate Arzamastseva <pshns@ukr.net>
1171 */
1172function media_printfile_thumbs($item,$auth,$jump=false){
1173    global $lang;
1174    global $conf;
1175
1176    // Prepare filename
1177    $file = utf8_decodeFN($item['file']);
1178
1179    // output
1180    echo '<li><div>';
1181
1182    if($item['isimg']) {
1183        media_printimgdetail($item, true);
1184
1185    } else {
1186        echo '<a name="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1187            media_managerURL(array('image' => hsc($item['id']))).'"><div>';
1188        media_printicon($item['id']);
1189        echo '</div></a>';
1190    }
1191    //echo '<input type=checkbox />';
1192    echo '<a href="'.media_managerURL(array('image' => hsc($item['id']))).'" name=
1193        "h_:'.$item['id'].'" class="name">'.hsc($file).'</a>';
1194    if($item['isimg']){
1195        $size = '';
1196        $size .= (int) $item['meta']->getField('File.Width');
1197        $size .= '&#215;';
1198        $size .= (int) $item['meta']->getField('File.Height');
1199        echo '<span class="size">'.$size.'</span>';
1200    } else {
1201        echo '<span class="size">&nbsp;</span>';
1202    }
1203    $date = dformat($item['mtime']);
1204    echo '<span class="date">'.$date.'</span>';
1205    $filesize = filesize_h($item['size']);
1206    echo '<span class="filesize">'.$filesize.'</span>';
1207    echo '<div class="clearer"></div>';
1208    echo '</div></li>'.NL;
1209}
1210
1211/**
1212 * Prints a thumbnail and metainfos
1213 */
1214function media_printimgdetail($item, $fullscreen=false){
1215    // prepare thumbnail
1216    if (!$fullscreen) $size = 120;
1217    else $size = 90;
1218    $w = (int) $item['meta']->getField('File.Width');
1219    $h = (int) $item['meta']->getField('File.Height');
1220    if($w>$size || $h>$size){
1221        if (!$fullscreen) {
1222            $ratio = $item['meta']->getResizeRatio($size);
1223        } else {
1224            $ratio = $item['meta']->getResizeRatio($size,$size);
1225        }
1226        $w = floor($w * $ratio);
1227        $h = floor($h * $ratio);
1228    }
1229    $src = ml($item['id'],array('w'=>$w,'h'=>$h,'t'=>$item['mtime']));
1230    $p = array();
1231    $p['width']  = $w;
1232    if (!$fullscreen) $p['height'] = $h;
1233    $p['alt']    = $item['id'];
1234    $p['class']  = 'thumb';
1235    $att = buildAttributes($p);
1236
1237    // output
1238    if ($fullscreen) {
1239        echo '<a name="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1240            media_managerURL(array('image' => hsc($item['id']))).'">';
1241        echo '<div><img src="'.$src.'" '.$att.' /></div>';
1242        echo '</a>';
1243        return 1;
1244    }
1245
1246    echo '<div class="detail">';
1247    echo '<div class="thumb">';
1248    echo '<a name="d_:'.$item['id'].'" class="select">';
1249    echo '<img src="'.$src.'" '.$att.' />';
1250    echo '</a>';
1251    echo '</div>';
1252
1253    // read EXIF/IPTC data
1254    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
1255    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
1256                'EXIF.TIFFImageDescription',
1257                'EXIF.TIFFUserComment'));
1258    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
1259    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
1260
1261    // print EXIF/IPTC data
1262    if($t || $d || $k ){
1263        echo '<p>';
1264        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
1265        if($d) echo htmlspecialchars($d).'<br />';
1266        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
1267        echo '</p>';
1268    }
1269    echo '</div>';
1270}
1271
1272/**
1273 * Build link based on the current, adding/rewriting
1274 * parameters
1275 *
1276 * @author Kate Arzamastseva <pshns@ukr.net>
1277 * @param array $params
1278 * @param string $amp - separator
1279 * @return string - link
1280 */
1281function media_managerURL($params=false, $amp='&amp;') {
1282    global $conf;
1283    global $ID;
1284
1285    $gets = array('do' => 'media');
1286    $media_manager_params = array('tab_files', 'tab_details', 'image', 'ns', 'view');
1287    foreach ($media_manager_params as $x) {
1288        if (isset($_REQUEST[$x])) $gets[$x] = $_REQUEST[$x];
1289    }
1290
1291    if ($params) {
1292        foreach ($params as $k => $v) {
1293            $gets[$k] = $v;
1294        }
1295    }
1296    unset($gets['id']);
1297    if ($gets['delete']) {
1298        unset($gets['image']);
1299        unset($gets['tab_details']);
1300    }
1301
1302    return wl($ID,$gets,false,$amp);
1303}
1304
1305/**
1306 * Print the media upload form if permissions are correct
1307 *
1308 * @author Andreas Gohr <andi@splitbrain.org>
1309 * @author Kate Arzamastseva <pshns@ukr.net>
1310 */
1311function media_uploadform($ns, $auth, $fullscreen = false){
1312    global $lang;
1313
1314    if($auth < AUTH_UPLOAD) {
1315        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
1316        return;
1317    }
1318
1319    $update = false;
1320    $id = '';
1321    if ($auth >= AUTH_DELETE && $fullscreen && $_REQUEST['mediado'] == 'update') {
1322        $update = true;
1323        $id = cleanID($_REQUEST['image']);
1324    }
1325
1326    // The default HTML upload form
1327    $params = array('id'      => 'dw__upload',
1328                    'enctype' => 'multipart/form-data');
1329    if (!$fullscreen) {
1330        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1331    } else {
1332        $params['action'] = media_managerURL(array('tab_files' => 'files',
1333            'tab_details' => 'view'), '&');
1334    }
1335
1336    $form = new Doku_Form($params);
1337    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediaupload'] . '</div>');
1338    $form->addElement(formSecurityToken());
1339    $form->addHidden('ns', hsc($ns));
1340    $form->addElement(form_makeOpenTag('p'));
1341    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
1342    $form->addElement(form_makeCloseTag('p'));
1343    $form->addElement(form_makeOpenTag('p'));
1344    $form->addElement(form_makeTextField('mediaid', noNS($id), $lang['txt_filename'].':', 'upload__name'));
1345    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
1346    $form->addElement(form_makeCloseTag('p'));
1347
1348    if($auth >= AUTH_DELETE){
1349        $form->addElement(form_makeOpenTag('p'));
1350        $attrs = array();
1351        if ($update) $attrs['checked'] = 'checked';
1352        $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check', $attrs));
1353        $form->addElement(form_makeCloseTag('p'));
1354    }
1355    html_form('upload', $form);
1356
1357    // prepare flashvars for multiupload
1358    $opt = array(
1359            'L_gridname'  => $lang['mu_gridname'] ,
1360            'L_gridsize'  => $lang['mu_gridsize'] ,
1361            'L_gridstat'  => $lang['mu_gridstat'] ,
1362            'L_namespace' => $lang['mu_namespace'] ,
1363            'L_overwrite' => $lang['txt_overwrt'],
1364            'L_browse'    => $lang['mu_browse'],
1365            'L_upload'    => $lang['btn_upload'],
1366            'L_toobig'    => $lang['mu_toobig'],
1367            'L_ready'     => $lang['mu_ready'],
1368            'L_done'      => $lang['mu_done'],
1369            'L_fail'      => $lang['mu_fail'],
1370            'L_authfail'  => $lang['mu_authfail'],
1371            'L_progress'  => $lang['mu_progress'],
1372            'L_filetypes' => $lang['mu_filetypes'],
1373            'L_info'      => $lang['mu_info'],
1374            'L_lasterr'   => $lang['mu_lasterr'],
1375
1376            'O_ns'        => ":$ns",
1377            'O_backend'   => 'mediamanager.php?'.session_name().'='.session_id(),
1378            'O_maxsize'   => php_to_byte(ini_get('upload_max_filesize')),
1379            'O_extensions'=> join('|',array_keys(getMimeTypes())),
1380            'O_overwrite' => ($auth >= AUTH_DELETE),
1381            'O_sectok'    => getSecurityToken(),
1382            'O_authtok'   => auth_createToken(),
1383            );
1384    $var = buildURLparams($opt);
1385    // output the flash uploader
1386    ?>
1387        <div id="dw__flashupload" style="display:none">
1388        <div class="upload"><?php echo $lang['mu_intro']?></div>
1389        <?php echo html_flashobject('multipleUpload.swf','500','190',null,$opt); ?>
1390        </div>
1391        <?php
1392}
1393
1394/**
1395 * Print the search field form
1396 *
1397 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1398 * @author Kate Arzamastseva <pshns@ukr.net>
1399 */
1400function media_searchform($ns,$query='',$fullscreen=false){
1401    global $lang;
1402
1403    // The default HTML search form
1404    $params = array('id' => 'dw__mediasearch');
1405    if (!$fullscreen) $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1406    else $params['action'] = media_managerURL(array(), '&');
1407    $form = new Doku_Form($params);
1408    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediasearch'] . '</div>');
1409    $form->addElement(formSecurityToken());
1410    $form->addHidden('ns', $ns);
1411    if (!$fullscreen) $form->addHidden('do', 'searchlist');
1412    else $form->addHidden('mediado', 'searchlist');
1413    $form->addElement(form_makeOpenTag('p'));
1414    $form->addElement(form_makeTextField('q', $query,$lang['searchmedia'],'','',array('title'=>sprintf($lang['searchmedia_in'],hsc($ns).':*'))));
1415    $form->addElement(form_makeButton('submit', '', $lang['btn_search']));
1416    $form->addElement(form_makeCloseTag('p'));
1417    html_form('searchmedia', $form);
1418}
1419
1420/**
1421 * Build a tree outline of available media namespaces
1422 *
1423 * @author Andreas Gohr <andi@splitbrain.org>
1424 */
1425function media_nstree($ns){
1426    global $conf;
1427    global $lang;
1428
1429    // currently selected namespace
1430    $ns  = cleanID($ns);
1431    if(empty($ns)){
1432        global $ID;
1433        $ns = dirname(str_replace(':','/',$ID));
1434        if($ns == '.') $ns ='';
1435    }
1436    $ns  = utf8_encodeFN(str_replace(':','/',$ns));
1437
1438    $data = array();
1439    search($data,$conf['mediadir'],'search_index',array('ns' => $ns, 'nofiles' => true));
1440
1441    // wrap a list with the root level around the other namespaces
1442    $item = array( 'level' => 0, 'id' => '',
1443            'open' =>'true', 'label' => '['.$lang['mediaroot'].']');
1444
1445    echo '<ul class="idx">';
1446    echo media_nstree_li($item);
1447    echo media_nstree_item($item);
1448    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
1449    echo '</li>';
1450    echo '</ul>';
1451}
1452
1453/**
1454 * Userfunction for html_buildlist
1455 *
1456 * Prints a media namespace tree item
1457 *
1458 * @author Andreas Gohr <andi@splitbrain.org>
1459 */
1460function media_nstree_item($item){
1461    $pos   = strrpos($item['id'], ':');
1462    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
1463    if(!$item['label']) $item['label'] = $label;
1464
1465    $ret  = '';
1466    if (!($_REQUEST['do'] == 'media'))
1467    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
1468    else $ret .= '<a href="'.media_managerURL(array('ns' => idfilter($item['id']), 'tab_files' => 'files'))
1469        .'" class="idx_dir">';
1470    $ret .= $item['label'];
1471    $ret .= '</a>';
1472    return $ret;
1473}
1474
1475/**
1476 * Userfunction for html_buildlist
1477 *
1478 * Prints a media namespace tree item opener
1479 *
1480 * @author Andreas Gohr <andi@splitbrain.org>
1481 */
1482function media_nstree_li($item){
1483    $class='media level'.$item['level'];
1484    if($item['open']){
1485        $class .= ' open';
1486        $img   = DOKU_BASE.'lib/images/minus.gif';
1487        $alt   = '&minus;';
1488    }else{
1489        $class .= ' closed';
1490        $img   = DOKU_BASE.'lib/images/plus.gif';
1491        $alt   = '+';
1492    }
1493    // TODO: only deliver an image if it actually has a subtree...
1494    return '<li class="'.$class.'">'.
1495        '<img src="'.$img.'" alt="'.$alt.'" />';
1496}
1497
1498/**
1499 * Resizes the given image to the given size
1500 *
1501 * @author  Andreas Gohr <andi@splitbrain.org>
1502 */
1503function media_resize_image($file, $ext, $w, $h=0){
1504    global $conf;
1505
1506    $info = @getimagesize($file); //get original size
1507    if($info == false) return $file; // that's no image - it's a spaceship!
1508
1509    if(!$h) $h = round(($w * $info[1]) / $info[0]);
1510
1511    // we wont scale up to infinity
1512    if($w > 2000 || $h > 2000) return $file;
1513
1514    //cache
1515    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
1516    $mtime = @filemtime($local); // 0 if not exists
1517
1518    if( $mtime > filemtime($file) ||
1519            media_resize_imageIM($ext,$file,$info[0],$info[1],$local,$w,$h) ||
1520            media_resize_imageGD($ext,$file,$info[0],$info[1],$local,$w,$h) ){
1521        if($conf['fperm']) chmod($local, $conf['fperm']);
1522        return $local;
1523    }
1524    //still here? resizing failed
1525    return $file;
1526}
1527
1528/**
1529 * Crops the given image to the wanted ratio, then calls media_resize_image to scale it
1530 * to the wanted size
1531 *
1532 * Crops are centered horizontally but prefer the upper third of an vertical
1533 * image because most pics are more interesting in that area (rule of thirds)
1534 *
1535 * @author  Andreas Gohr <andi@splitbrain.org>
1536 */
1537function media_crop_image($file, $ext, $w, $h=0){
1538    global $conf;
1539
1540    if(!$h) $h = $w;
1541    $info = @getimagesize($file); //get original size
1542    if($info == false) return $file; // that's no image - it's a spaceship!
1543
1544    // calculate crop size
1545    $fr = $info[0]/$info[1];
1546    $tr = $w/$h;
1547    if($tr >= 1){
1548        if($tr > $fr){
1549            $cw = $info[0];
1550            $ch = (int) $info[0]/$tr;
1551        }else{
1552            $cw = (int) $info[1]*$tr;
1553            $ch = $info[1];
1554        }
1555    }else{
1556        if($tr < $fr){
1557            $cw = (int) $info[1]*$tr;
1558            $ch = $info[1];
1559        }else{
1560            $cw = $info[0];
1561            $ch = (int) $info[0]/$tr;
1562        }
1563    }
1564    // calculate crop offset
1565    $cx = (int) ($info[0]-$cw)/2;
1566    $cy = (int) ($info[1]-$ch)/3;
1567
1568    //cache
1569    $local = getCacheName($file,'.media.'.$cw.'x'.$ch.'.crop.'.$ext);
1570    $mtime = @filemtime($local); // 0 if not exists
1571
1572    if( $mtime > filemtime($file) ||
1573            media_crop_imageIM($ext,$file,$info[0],$info[1],$local,$cw,$ch,$cx,$cy) ||
1574            media_resize_imageGD($ext,$file,$cw,$ch,$local,$cw,$ch,$cx,$cy) ){
1575        if($conf['fperm']) chmod($local, $conf['fperm']);
1576        return media_resize_image($local,$ext, $w, $h);
1577    }
1578
1579    //still here? cropping failed
1580    return media_resize_image($file,$ext, $w, $h);
1581}
1582
1583/**
1584 * Download a remote file and return local filename
1585 *
1586 * returns false if download fails. Uses cached file if available and
1587 * wanted
1588 *
1589 * @author  Andreas Gohr <andi@splitbrain.org>
1590 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
1591 */
1592function media_get_from_URL($url,$ext,$cache){
1593    global $conf;
1594
1595    // if no cache or fetchsize just redirect
1596    if ($cache==0)           return false;
1597    if (!$conf['fetchsize']) return false;
1598
1599    $local = getCacheName(strtolower($url),".media.$ext");
1600    $mtime = @filemtime($local); // 0 if not exists
1601
1602    //decide if download needed:
1603    if( ($mtime == 0) ||                           // cache does not exist
1604            ($cache != -1 && $mtime < time()-$cache)   // 'recache' and cache has expired
1605      ){
1606        if(media_image_download($url,$local)){
1607            return $local;
1608        }else{
1609            return false;
1610        }
1611    }
1612
1613    //if cache exists use it else
1614    if($mtime) return $local;
1615
1616    //else return false
1617    return false;
1618}
1619
1620/**
1621 * Download image files
1622 *
1623 * @author Andreas Gohr <andi@splitbrain.org>
1624 */
1625function media_image_download($url,$file){
1626    global $conf;
1627    $http = new DokuHTTPClient();
1628    $http->max_bodysize = $conf['fetchsize'];
1629    $http->timeout = 25; //max. 25 sec
1630    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
1631
1632    $data = $http->get($url);
1633    if(!$data) return false;
1634
1635    $fileexists = @file_exists($file);
1636    $fp = @fopen($file,"w");
1637    if(!$fp) return false;
1638    fwrite($fp,$data);
1639    fclose($fp);
1640    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
1641
1642    // check if it is really an image
1643    $info = @getimagesize($file);
1644    if(!$info){
1645        @unlink($file);
1646        return false;
1647    }
1648
1649    return true;
1650}
1651
1652/**
1653 * resize images using external ImageMagick convert program
1654 *
1655 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
1656 * @author Andreas Gohr <andi@splitbrain.org>
1657 */
1658function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
1659    global $conf;
1660
1661    // check if convert is configured
1662    if(!$conf['im_convert']) return false;
1663
1664    // prepare command
1665    $cmd  = $conf['im_convert'];
1666    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
1667    if ($ext == 'jpg' || $ext == 'jpeg') {
1668        $cmd .= ' -quality '.$conf['jpg_quality'];
1669    }
1670    $cmd .= " $from $to";
1671
1672    @exec($cmd,$out,$retval);
1673    if ($retval == 0) return true;
1674    return false;
1675}
1676
1677/**
1678 * crop images using external ImageMagick convert program
1679 *
1680 * @author Andreas Gohr <andi@splitbrain.org>
1681 */
1682function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
1683    global $conf;
1684
1685    // check if convert is configured
1686    if(!$conf['im_convert']) return false;
1687
1688    // prepare command
1689    $cmd  = $conf['im_convert'];
1690    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
1691    if ($ext == 'jpg' || $ext == 'jpeg') {
1692        $cmd .= ' -quality '.$conf['jpg_quality'];
1693    }
1694    $cmd .= " $from $to";
1695
1696    @exec($cmd,$out,$retval);
1697    if ($retval == 0) return true;
1698    return false;
1699}
1700
1701/**
1702 * resize or crop images using PHP's libGD support
1703 *
1704 * @author Andreas Gohr <andi@splitbrain.org>
1705 * @author Sebastian Wienecke <s_wienecke@web.de>
1706 */
1707function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
1708    global $conf;
1709
1710    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
1711
1712    // check available memory
1713    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
1714        return false;
1715    }
1716
1717    // create an image of the given filetype
1718    if ($ext == 'jpg' || $ext == 'jpeg'){
1719        if(!function_exists("imagecreatefromjpeg")) return false;
1720        $image = @imagecreatefromjpeg($from);
1721    }elseif($ext == 'png') {
1722        if(!function_exists("imagecreatefrompng")) return false;
1723        $image = @imagecreatefrompng($from);
1724
1725    }elseif($ext == 'gif') {
1726        if(!function_exists("imagecreatefromgif")) return false;
1727        $image = @imagecreatefromgif($from);
1728    }
1729    if(!$image) return false;
1730
1731    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
1732        $newimg = @imagecreatetruecolor ($to_w, $to_h);
1733    }
1734    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
1735    if(!$newimg){
1736        imagedestroy($image);
1737        return false;
1738    }
1739
1740    //keep png alpha channel if possible
1741    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
1742        imagealphablending($newimg, false);
1743        imagesavealpha($newimg,true);
1744    }
1745
1746    //keep gif transparent color if possible
1747    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
1748        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
1749            $transcolorindex = @imagecolortransparent($image);
1750            if($transcolorindex >= 0 ) { //transparent color exists
1751                $transcolor = @imagecolorsforindex($image, $transcolorindex);
1752                $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
1753                @imagefill($newimg, 0, 0, $transcolorindex);
1754                @imagecolortransparent($newimg, $transcolorindex);
1755            }else{ //filling with white
1756                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1757                @imagefill($newimg, 0, 0, $whitecolorindex);
1758            }
1759        }else{ //filling with white
1760            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1761            @imagefill($newimg, 0, 0, $whitecolorindex);
1762        }
1763    }
1764
1765    //try resampling first
1766    if(function_exists("imagecopyresampled")){
1767        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
1768            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1769        }
1770    }else{
1771        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1772    }
1773
1774    $okay = false;
1775    if ($ext == 'jpg' || $ext == 'jpeg'){
1776        if(!function_exists('imagejpeg')){
1777            $okay = false;
1778        }else{
1779            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
1780        }
1781    }elseif($ext == 'png') {
1782        if(!function_exists('imagepng')){
1783            $okay = false;
1784        }else{
1785            $okay =  imagepng($newimg, $to);
1786        }
1787    }elseif($ext == 'gif') {
1788        if(!function_exists('imagegif')){
1789            $okay = false;
1790        }else{
1791            $okay = imagegif($newimg, $to);
1792        }
1793    }
1794
1795    // destroy GD image ressources
1796    if($image) imagedestroy($image);
1797    if($newimg) imagedestroy($newimg);
1798
1799    return $okay;
1800}
1801
1802/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
1803