xref: /dokuwiki/inc/media.php (revision 95b451bc621ae202d0229176ad0712b22d14c953) 
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){
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    $form = new Doku_Form(array('action' => media_managerURL(array('tab_details' => 'view')),
112                                'class' => 'meta'));
113    $form->addHidden('img', $id);
114    $form->addHidden('mediado', 'save');
115    foreach($fields as $key => $field){
116        // get current value
117        if (empty($field[0])) continue;
118        $tags = array($field[0]);
119        if(is_array($field[3])) $tags = array_merge($tags,$field[3]);
120        $value = tpl_img_getTag($tags,'',$src);
121        $value = cleanText($value);
122
123        // prepare attributes
124        $p = array();
125        $p['class'] = 'edit';
126        $p['id']    = 'meta__'.$key;
127        $p['name']  = 'meta['.$field[0].']';
128
129        $form->addElement('<div class="row">');
130        if($field[2] == 'text'){
131            $form->addElement(form_makeField('text', $p['name'], $value, ($lang[$field[1]]) ? $lang[$field[1]] : $field[1] . ':', $p['id'], $p['class']));
132        }else{
133            $att = buildAttributes($p);
134            $form->addElement("<textarea $att rows=\"6\" cols=\"50\">".formText($value).'</textarea>');
135        }
136        $form->addElement('</div>');
137    }
138    $form->addElement('<div class="buttons">');
139    $form->addElement(form_makeButton('submit', '', $lang['btn_save'], array('accesskey' => 's', 'name' => 'mediado[save]')));
140    $form->addElement('</div>');
141    $form->printForm();
142}
143
144/**
145 * Convenience function to check if a media file is still in use
146 *
147 * @author Michael Klier <chi@chimeric.de>
148 */
149function media_inuse($id) {
150    global $conf;
151    $mediareferences = array();
152    if($conf['refcheck']){
153        $mediareferences = ft_mediause($id,$conf['refshow']);
154        if(!count($mediareferences)) {
155            return false;
156        } else {
157            return $mediareferences;
158        }
159    } else {
160        return false;
161    }
162}
163
164define('DOKU_MEDIA_DELETED', 1);
165define('DOKU_MEDIA_NOT_AUTH', 2);
166define('DOKU_MEDIA_INUSE', 4);
167define('DOKU_MEDIA_EMPTY_NS', 8);
168
169/**
170 * Handles media file deletions
171 *
172 * If configured, checks for media references before deletion
173 *
174 * @author Andreas Gohr <andi@splitbrain.org>
175 * @return int One of: 0,
176                       DOKU_MEDIA_DELETED,
177                       DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS,
178                       DOKU_MEDIA_NOT_AUTH,
179                       DOKU_MEDIA_INUSE
180 */
181function media_delete($id,$auth){
182    global $lang;
183    if($auth < AUTH_DELETE) return DOKU_MEDIA_NOT_AUTH;
184    if(media_inuse($id)) return DOKU_MEDIA_INUSE;
185
186    $file = mediaFN($id);
187
188    // trigger an event - MEDIA_DELETE_FILE
189    $data['id']   = $id;
190    $data['name'] = basename($file);
191    $data['path'] = $file;
192    $data['size'] = (@file_exists($file)) ? filesize($file) : 0;
193
194    $data['unl'] = false;
195    $data['del'] = false;
196    $evt = new Doku_Event('MEDIA_DELETE_FILE',$data);
197    if ($evt->advise_before()) {
198        $old = @filemtime($file);
199        if(!@file_exists(mediaFN($id, $old)) && @file_exists($file)) {
200            // add old revision to the attic
201            media_saveOldRevision($id);
202        }
203
204        $data['unl'] = @unlink($file);
205        if($data['unl']){
206            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_DELETE, $lang['deleted']);
207            $data['del'] = io_sweepNS($id,'mediadir');
208        }
209    }
210    $evt->advise_after();
211    unset($evt);
212
213    if($data['unl'] && $data['del']){
214        return DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS;
215    }
216
217    return $data['unl'] ? DOKU_MEDIA_DELETED : 0;
218}
219
220/**
221 * Handle file uploads via XMLHttpRequest
222 *
223 * @return mixed false on error, id of the new file on success
224 */
225function media_upload_xhr($ns,$auth){
226    if(!checkSecurityToken()) return false;
227
228    $id = $_GET['qqfile'];
229    list($ext,$mime,$dl) = mimetype($id);
230    $input = fopen("php://input", "r");
231    $temp = tmpfile();
232    $realSize = stream_copy_to_stream($input, $temp);
233    fclose($input);
234    if ($realSize != (int)$_SERVER["CONTENT_LENGTH"]) return false;
235    if (!($tmp = io_mktmpdir())) return false;
236    $path = $tmp.'/'.md5($id);
237    $target = fopen($path, "w");
238    fseek($temp, 0, SEEK_SET);
239    stream_copy_to_stream($temp, $target);
240    fclose($target);
241    $res = media_save(
242        array('name' => $path,
243            'mime' => $mime,
244            'ext'  => $ext),
245        $ns.':'.$id,
246        (($_REQUEST['ow'] == 'checked') ? true : false),
247        $auth,
248        'copy'
249    );
250    unlink($path);
251    if ($tmp) dir_delete($tmp);
252    if (is_array($res)) {
253        msg($res[0], $res[1]);
254        return false;
255    }
256    return $res;
257}
258
259/**
260 * Handles media file uploads
261 *
262 * @author Andreas Gohr <andi@splitbrain.org>
263 * @author Michael Klier <chi@chimeric.de>
264 * @return mixed false on error, id of the new file on success
265 */
266function media_upload($ns,$auth,$file=false){
267    if(!checkSecurityToken()) return false;
268    global $lang;
269
270    // get file and id
271    $id   = $_POST['mediaid'];
272    if (!$file) $file = $_FILES['upload'];
273    if(empty($id)) $id = $file['name'];
274
275    // check for errors (messages are done in lib/exe/mediamanager.php)
276    if($file['error']) return false;
277
278    // check extensions
279    list($fext,$fmime,$dl) = mimetype($file['name']);
280    list($iext,$imime,$dl) = mimetype($id);
281    if($fext && !$iext){
282        // no extension specified in id - read original one
283        $id   .= '.'.$fext;
284        $imime = $fmime;
285    }elseif($fext && $fext != $iext){
286        // extension was changed, print warning
287        msg(sprintf($lang['mediaextchange'],$fext,$iext));
288    }
289
290    $res = media_save(array('name' => $file['tmp_name'],
291                            'mime' => $imime,
292                            'ext'  => $iext), $ns.':'.$id,
293                      $_REQUEST['ow'], $auth, 'move_uploaded_file');
294    if (is_array($res)) {
295        msg($res[0], $res[1]);
296        return false;
297    }
298    return $res;
299}
300
301/**
302 * This generates an action event and delegates to _media_upload_action().
303 * Action plugins are allowed to pre/postprocess the uploaded file.
304 * (The triggered event is preventable.)
305 *
306 * Event data:
307 * $data[0]     fn_tmp: the temporary file name (read from $_FILES)
308 * $data[1]     fn: the file name of the uploaded file
309 * $data[2]     id: the future directory id of the uploaded file
310 * $data[3]     imime: the mimetype of the uploaded file
311 * $data[4]     overwrite: if an existing file is going to be overwritten
312 *
313 * @triggers MEDIA_UPLOAD_FINISH
314 */
315function media_save($file, $id, $ow, $auth, $move) {
316    if($auth < AUTH_UPLOAD) {
317        return array("You don't have permissions to upload files.", -1);
318    }
319
320    if (!isset($file['mime']) || !isset($file['ext'])) {
321        list($ext, $mime) = mimetype($id);
322        if (!isset($file['mime'])) {
323            $file['mime'] = $mime;
324        }
325        if (!isset($file['ext'])) {
326            $file['ext'] = $ext;
327        }
328    }
329
330    global $lang, $conf;
331
332    // get filename
333    $id   = cleanID($id,false,true);
334    $fn   = mediaFN($id);
335
336    // get filetype regexp
337    $types = array_keys(getMimeTypes());
338    $types = array_map(create_function('$q','return preg_quote($q,"/");'),$types);
339    $regex = join('|',$types);
340
341    // because a temp file was created already
342    if(!preg_match('/\.('.$regex.')$/i',$fn)) {
343        return array($lang['uploadwrong'],-1);
344    }
345
346    //check for overwrite
347    $overwrite = @file_exists($fn);
348    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
349    if($overwrite && (!$ow || $auth < $auth_ow)) {
350        return array($lang['uploadexist'], 0);
351    }
352    // check for valid content
353    $ok = media_contentcheck($file['name'], $file['mime']);
354    if($ok == -1){
355        return array(sprintf($lang['uploadbadcontent'],'.' . $file['ext']),-1);
356    }elseif($ok == -2){
357        return array($lang['uploadspam'],-1);
358    }elseif($ok == -3){
359        return array($lang['uploadxss'],-1);
360    }
361
362    // prepare event data
363    $data[0] = $file['name'];
364    $data[1] = $fn;
365    $data[2] = $id;
366    $data[3] = $file['mime'];
367    $data[4] = $overwrite;
368    $data[5] = $move;
369
370    // trigger event
371    return trigger_event('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
372}
373
374/**
375 * Callback adapter for media_upload_finish()
376 * @author Michael Klier <chi@chimeric.de>
377 */
378function _media_upload_action($data) {
379    // fixme do further sanity tests of given data?
380    if(is_array($data) && count($data)===6) {
381        return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
382    } else {
383        return false; //callback error
384    }
385}
386
387/**
388 * Saves an uploaded media file
389 *
390 * @author Andreas Gohr <andi@splitbrain.org>
391 * @author Michael Klier <chi@chimeric.de>
392 * @author Kate Arzamastseva <pshns@ukr.net>
393 */
394function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') {
395    global $conf;
396    global $lang;
397    global $REV;
398
399    $old = @filemtime($fn);
400    if(!@file_exists(mediaFN($id, $old)) && @file_exists($fn)) {
401        // add old revision to the attic if missing
402        media_saveOldRevision($id);
403    }
404
405    // prepare directory
406    io_createNamespace($id, 'media');
407
408    if($move($fn_tmp, $fn)) {
409        @clearstatcache(true,$fn);
410        $new = @filemtime($fn);
411        // Set the correct permission here.
412        // Always chmod media because they may be saved with different permissions than expected from the php umask.
413        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
414        chmod($fn, $conf['fmode']);
415        msg($lang['uploadsucc'],1);
416        media_notify($id,$fn,$imime,$old);
417        // add a log entry to the media changelog
418        if ($REV){
419            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_REVERT, $lang['restored'], $REV);
420        } elseif ($overwrite) {
421            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT);
422        } else {
423            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
424        }
425        return $id;
426    }else{
427        return array($lang['uploadfail'],-1);
428    }
429}
430
431/**
432 * Moves the current version of media file to the media_attic
433 * directory
434 *
435 * @author Kate Arzamastseva <pshns@ukr.net>
436 * @param string $id
437 * @return int - revision date
438 */
439function media_saveOldRevision($id){
440    global $conf, $lang;
441
442    $oldf = mediaFN($id);
443    if(!@file_exists($oldf)) return '';
444    $date = filemtime($oldf);
445    if (!$conf['mediarevisions']) return $date;
446
447    if (!getRevisionInfo($id, $date, 8192, true)) {
448        // there was an external edit,
449        // there is no log entry for current version of file
450        if (!@file_exists(mediaMetaFN($id,'.changes'))) {
451            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
452        } else {
453            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_EDIT);
454        }
455    }
456
457    $newf = mediaFN($id,$date);
458    io_makeFileDir($newf);
459    if(copy($oldf, $newf)) {
460        // Set the correct permission here.
461        // Always chmod media because they may be saved with different permissions than expected from the php umask.
462        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
463        chmod($newf, $conf['fmode']);
464    }
465    return $date;
466}
467
468/**
469 * This function checks if the uploaded content is really what the
470 * mimetype says it is. We also do spam checking for text types here.
471 *
472 * We need to do this stuff because we can not rely on the browser
473 * to do this check correctly. Yes, IE is broken as usual.
474 *
475 * @author Andreas Gohr <andi@splitbrain.org>
476 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
477 * @fixme  check all 26 magic IE filetypes here?
478 */
479function media_contentcheck($file,$mime){
480    global $conf;
481    if($conf['iexssprotect']){
482        $fh = @fopen($file, 'rb');
483        if($fh){
484            $bytes = fread($fh, 256);
485            fclose($fh);
486            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
487                return -3;
488            }
489        }
490    }
491    if(substr($mime,0,6) == 'image/'){
492        $info = @getimagesize($file);
493        if($mime == 'image/gif' && $info[2] != 1){
494            return -1;
495        }elseif($mime == 'image/jpeg' && $info[2] != 2){
496            return -1;
497        }elseif($mime == 'image/png' && $info[2] != 3){
498            return -1;
499        }
500        # fixme maybe check other images types as well
501    }elseif(substr($mime,0,5) == 'text/'){
502        global $TEXT;
503        $TEXT = io_readFile($file);
504        if(checkwordblock()){
505            return -2;
506        }
507    }
508    return 0;
509}
510
511/**
512 * Send a notify mail on uploads
513 *
514 * @author Andreas Gohr <andi@splitbrain.org>
515 */
516function media_notify($id,$file,$mime,$old_rev=false){
517    global $lang;
518    global $conf;
519    global $INFO;
520    if(empty($conf['notify'])) return; //notify enabled?
521
522    $ip = clientIP();
523
524    $text = rawLocale('uploadmail');
525    $text = str_replace('@DATE@',dformat(),$text);
526    $text = str_replace('@BROWSER@',$_SERVER['HTTP_USER_AGENT'],$text);
527    $text = str_replace('@IPADDRESS@',$ip,$text);
528    $text = str_replace('@HOSTNAME@',gethostsbyaddrs($ip),$text);
529    $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
530    $text = str_replace('@USER@',$_SERVER['REMOTE_USER'],$text);
531    $text = str_replace('@MIME@',$mime,$text);
532    $text = str_replace('@MEDIA@',ml($id,'',true,'&',true),$text);
533    $text = str_replace('@SIZE@',filesize_h(filesize($file)),$text);
534    if ($old_rev && $conf['mediarevisions']) {
535        $text = str_replace('@OLD@', ml($id, "rev=$old_rev", true, '&', true), $text);
536    } else {
537        $text = str_replace('@OLD@', '', $text);
538    }
539
540    if(empty($conf['mailprefix'])) {
541        $subject = '['.$conf['title'].'] '.$lang['mail_upload'].' '.$id;
542    } else {
543        $subject = '['.$conf['mailprefix'].'] '.$lang['mail_upload'].' '.$id;
544    }
545
546    mail_send($conf['notify'],$subject,$text,$conf['mailfrom']);
547}
548
549/**
550 * List all files in a given Media namespace
551 */
552function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false,$sort=false){
553    global $conf;
554    global $lang;
555    $ns = cleanID($ns);
556
557    // check auth our self if not given (needed for ajax calls)
558    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
559
560    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
561
562    if($auth < AUTH_READ){
563        // FIXME: print permission warning here instead?
564        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
565    }else{
566        if (!$fullscreenview) media_uploadform($ns, $auth);
567
568        $dir = utf8_encodeFN(str_replace(':','/',$ns));
569        $data = array();
570        search($data,$conf['mediadir'],'search_media',
571                array('showmsg'=>true,'depth'=>1),$dir,1,$sort);
572
573        if(!count($data)){
574            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
575        }else {
576            if ($fullscreenview) {
577                $view = $_REQUEST['list'];
578                if ($view == 'rows') {
579                    echo '<ul class="rows">';
580                } else {
581                    echo '<ul class="thumbs">';
582                }
583            }
584            foreach($data as $item){
585                if (!$fullscreenview) {
586                    media_printfile($item,$auth,$jump);
587                } else {
588                    media_printfile_thumbs($item,$auth,$jump);
589                }
590            }
591            if ($fullscreenview) echo '</ul>';
592        }
593    }
594    if (!$fullscreenview) media_searchform($ns);
595}
596
597/**
598 * Prints tabs for files list actions
599 *
600 * @author Kate Arzamastseva <pshns@ukr.net>
601 * @author Adrian Lang <mail@adrianlang.de>
602 *
603 * @param string $selected_tab - opened tab
604 */
605
606function media_tabs_files($selected_tab = ''){
607    global $lang;
608    $tabs = array();
609    foreach(array('files'  => 'mediaselect',
610                  'upload' => 'media_uploadtab',
611                  'search' => 'media_searchtab') as $tab => $caption) {
612        $tabs[$tab] = array('href'    => media_managerURL(array('tab_files' => $tab), '&'),
613                            'caption' => $lang[$caption]);
614    }
615
616    html_tabs($tabs, $selected_tab);
617}
618
619/**
620 * Prints tabs for files details actions
621 *
622 * @author Kate Arzamastseva <pshns@ukr.net>
623 * @param string $selected_tab - opened tab
624 */
625function media_tabs_details($image, $selected_tab = ''){
626    global $lang, $conf;
627
628    $tabs = array();
629    $tabs['view'] = array('href'    => media_managerURL(array('tab_details' => 'view'), '&'),
630                          'caption' => $lang['media_viewtab']);
631
632    list($ext, $mime) = mimetype($image);
633    if ($mime == 'image/jpeg' && @file_exists(mediaFN($image))) {
634        $tabs['edit'] = array('href'    => media_managerURL(array('tab_details' => 'edit'), '&'),
635                              'caption' => $lang['media_edittab']);
636    }
637    if ($conf['mediarevisions']) {
638        $tabs['history'] = array('href'    => media_managerURL(array('tab_details' => 'history'), '&'),
639                                 'caption' => $lang['media_historytab']);
640    }
641
642    html_tabs($tabs, $selected_tab);
643}
644
645/**
646 * Prints options for the tab that displays a list of all files
647 *
648 * @author Kate Arzamastseva <pshns@ukr.net>
649 */
650function media_tab_files_options(){
651    global $lang, $NS;
652    $sort = _media_get_sort_type();
653    $form = new Doku_Form(array('class' => 'actions', 'method' => 'get'));
654    $form->addHidden('sectok', null);
655    $form->addHidden('ns', $NS);
656    $form->addHidden('do', 'media');
657    $form->addElement('<ul>');
658    foreach(array('list' => array('listType', array('thumbs', 'rows')),
659                  'sort' => array('sortBy', array('name', 'date'), $sort))
660            as $group => $content) {
661        if (count($content) < 3) {
662            $content[2] = isset($_REQUEST[$group])
663                            ? $_REQUEST[$group]
664                            : $content[1][0];
665        }
666
667        $form->addElement('<li class="' . $content[0] . '">');
668        foreach($content[1] as $option) {
669            $attrs = array();
670            if ($content[2] == $option) {
671                $attrs['checked'] = 'checked';
672            }
673            $form->addElement(form_makeRadioField($group, $option,
674                                       $lang['media_' . $group . '_' . $option],
675                                                  $content[0] . '__' . $option,
676                                                  $option, $attrs));
677        }
678        $form->addElement('</li>');
679    }
680    $form->addElement('<li>');
681    $form->addElement(form_makeButton('submit', '', $lang['btn_apply']));
682    $form->addElement('</li>');
683    $form->addElement('</ul>');
684    $form->printForm();
685}
686
687/**
688 * Returns type of sorting for the list of files in media manager
689 *
690 * @author Kate Arzamastseva <pshns@ukr.net>
691 * @return string - sort type
692 */
693function _media_get_sort_type() {
694    $sort = 'name';
695    if (isset($_REQUEST['sort'])) {
696        $sort = $_REQUEST['sort'];
697    } elseif (strpos($_COOKIE['DOKU_PREFS'], 'sort') >= 0) {
698        $parts = explode('#', $_COOKIE['DOKU_PREFS']);
699        for ($i = 0; $i < count($parts); $i+=2){
700            if ($parts[$i] == 'sort') $sort = $parts[$i+1];
701        }
702    }
703    return $sort;
704}
705
706/**
707 * Prints tab that displays a list of all files
708 *
709 * @author Kate Arzamastseva <pshns@ukr.net>
710 */
711function media_tab_files($ns,$auth=null,$jump='') {
712    global $lang;
713    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
714
715    if($auth < AUTH_READ){
716        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
717    }else{
718        media_filelist($ns,$auth,$jump,true,_media_get_sort_type());
719    }
720}
721
722/**
723 * Prints tab that displays uploading form
724 *
725 * @author Kate Arzamastseva <pshns@ukr.net>
726 */
727function media_tab_upload($ns,$auth=null,$jump='') {
728    global $lang;
729    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
730
731    echo '<div class="upload">';
732    if ($auth >= AUTH_UPLOAD) {
733        echo '<p>' . $lang['mediaupload'] . '</p>';
734    }
735    media_uploadform($ns, $auth, true);
736    echo '</div>';
737}
738
739/**
740 * Prints tab that displays search form
741 *
742 * @author Kate Arzamastseva <pshns@ukr.net>
743 */
744function media_tab_search($ns,$auth=null) {
745    global $lang;
746
747    $do = $_REQUEST['mediado'];
748    $query = $_REQUEST['q'];
749    if (!$query) $query = '';
750    echo '<div class="search">';
751
752    media_searchform($ns, $query, true);
753    if ($do == 'searchlist') {
754        media_searchlist($query,$ns,$auth,true,_media_get_sort_type());
755    }
756    echo '</div>';
757}
758
759/**
760 * Prints tab that displays mediafile details
761 *
762 * @author Kate Arzamastseva <pshns@ukr.net>
763 */
764function media_tab_view($image, $ns, $auth=null, $rev=false) {
765    global $lang, $conf;
766    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
767
768    if ($image && $auth >= AUTH_READ) {
769        $meta = new JpegMeta(mediaFN($image, $rev));
770        media_preview($image, $auth, $rev, $meta);
771        media_preview_buttons($image, $auth, $rev);
772        media_details($image, $auth, $rev, $meta);
773
774    } else {
775        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>';
776    }
777}
778
779/**
780 * Prints tab that displays form for editing mediafile metadata
781 *
782 * @author Kate Arzamastseva <pshns@ukr.net>
783 */
784function media_tab_edit($image, $ns, $auth=null) {
785    global $lang;
786    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
787
788    if ($image) {
789        list($ext, $mime) = mimetype($image);
790        if ($mime == 'image/jpeg') media_metaform($image,$auth);
791    }
792}
793
794/**
795 * Prints tab that displays mediafile revisions
796 *
797 * @author Kate Arzamastseva <pshns@ukr.net>
798 */
799function media_tab_history($image, $ns, $auth=null) {
800    global $lang;
801    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
802    $do = $_REQUEST['mediado'];
803
804    if ($auth >= AUTH_READ && $image) {
805        if ($do == 'diff'){
806            media_diff($image, $ns, $auth);
807        } else {
808            $first = isset($_REQUEST['first']) ? intval($_REQUEST['first']) : 0;
809            html_revisions($first, $image);
810        }
811    } else {
812        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
813    }
814}
815
816/**
817 * Prints mediafile details
818 *
819 * @author Kate Arzamastseva <pshns@ukr.net>
820 */
821function media_preview($image, $auth, $rev=false, $meta=false) {
822    global $lang;
823
824    echo '<div class="image">';
825
826    $size = media_image_preview_size($image, $rev, $meta);
827
828    if ($size) {
829        $more = array();
830        if ($rev) {
831            $more['rev'] = $rev;
832        } else {
833            $t = @filemtime(mediaFN($image));
834            $more['t'] = $t;
835        }
836
837        $more['w'] = $size[0];
838        $more['h'] = $size[1];
839        $src = ml($image, $more);
840        echo '<img src="'.$src.'" alt="" style="max-width: '.$size[0].'px;" />';
841    }
842
843    echo '</div>';
844}
845
846/**
847 * Prints mediafile action buttons
848 *
849 * @author Kate Arzamastseva <pshns@ukr.net>
850 */
851function media_preview_buttons($image, $auth, $rev=false) {
852    global $lang, $conf;
853
854    echo '<ul class="actions">';
855
856    $more = '';
857    if ($rev) {
858        $more = "rev=$rev";
859    } else {
860        $t = @filemtime(mediaFN($image));
861        $more = "t=$t";
862    }
863    $link = ml($image,$more,true,'&');
864
865    if (@file_exists(mediaFN($image, $rev))) {
866
867        // view original file button
868        $form = new Doku_Form(array('action'=>$link, 'method'=>'get', 'target' => '_blank'));
869        $form->addHidden('sectok', null);
870        $form->addElement(form_makeButton('submit','',$lang['mediaview']));
871        echo '<li>';
872        $form->printForm();
873        echo '</li>';
874    }
875
876    if($auth >= AUTH_DELETE && !$rev && @file_exists(mediaFN($image))){
877
878        // delete button
879        $form = new Doku_Form(array('id' => 'mediamanager__btn_delete',
880            'action'=>media_managerURL(array('delete' => $image), '&')));
881        $form->addElement(form_makeButton('submit','',$lang['btn_delete']));
882        echo '<li>';
883        $form->printForm();
884        echo '</li>';
885    }
886
887    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
888    if($auth >= $auth_ow && !$rev){
889
890        // upload new version button
891        $form = new Doku_Form(array('id' => 'mediamanager__btn_update',
892            'action'=>media_managerURL(array('image' => $image, 'mediado' => 'update'), '&')));
893        $form->addElement(form_makeButton('submit','',$lang['media_update']));
894        echo '<li>';
895        $form->printForm();
896        echo '</li>';
897    }
898
899    if($auth >= AUTH_UPLOAD && $rev && $conf['mediarevisions'] && @file_exists(mediaFN($image, $rev))){
900
901        // restore button
902        $form = new Doku_Form(array('id' => 'mediamanager__btn_restore',
903            'action'=>media_managerURL(array('image' => $image), '&')));
904        $form->addHidden('mediado','restore');
905        $form->addHidden('rev',$rev);
906        $form->addElement(form_makeButton('submit','',$lang['media_restore']));
907        echo '<li>';
908        $form->printForm();
909        echo '</li>';
910    }
911
912    echo '</ul>';
913}
914
915/**
916 * Returns image width and height for mediamanager preview panel
917 *
918 * @author Kate Arzamastseva <pshns@ukr.net>
919 * @param string $image
920 * @param int $rev
921 * @param JpegMeta $meta
922 * @return array
923 */
924function media_image_preview_size($image, $rev, $meta, $size = 500) {
925    if (!preg_match("/\.(jpe?g|gif|png)$/", $image) || !file_exists(mediaFN($image, $rev))) return false;
926
927    $info = getimagesize(mediaFN($image, $rev));
928    $w = (int) $info[0];
929    $h = (int) $info[1];
930
931    if($meta && ($w > $size || $h > $size)){
932        $ratio = $meta->getResizeRatio($size, $size);
933        $w = floor($w * $ratio);
934        $h = floor($h * $ratio);
935    }
936    return array($w, $h);
937}
938
939/**
940 * Returns the requested EXIF/IPTC tag from the image meta
941 *
942 * @author Kate Arzamastseva <pshns@ukr.net>
943 * @param array $tags
944 * @param JpegMeta $meta
945 * @param string $alt
946 * @return string
947 */
948function media_getTag($tags,$meta,$alt=''){
949    if($meta === false) return $alt;
950    $info = $meta->getField($tags);
951    if($info == false) return $alt;
952    return $info;
953}
954
955/**
956 * Returns mediafile tags
957 *
958 * @author Kate Arzamastseva <pshns@ukr.net>
959 * @param JpegMeta $meta
960 * @return array
961 */
962function media_file_tags($meta) {
963    global $config_cascade;
964
965    // load the field descriptions
966    static $fields = null;
967    if(is_null($fields)){
968        $config_files = getConfigFiles('mediameta');
969        foreach ($config_files as $config_file) {
970            if(@file_exists($config_file)) include($config_file);
971        }
972    }
973
974    $tags = array();
975
976    foreach($fields as $key => $tag){
977        $t = array();
978        if (!empty($tag[0])) $t = array($tag[0]);
979        if(is_array($tag[3])) $t = array_merge($t,$tag[3]);
980        $value = media_getTag($t, $meta);
981        $tags[] = array('tag' => $tag, 'value' => $value);
982    }
983
984    return $tags;
985}
986
987/**
988 * Prints mediafile tags
989 *
990 * @author Kate Arzamastseva <pshns@ukr.net>
991 */
992function media_details($image, $auth, $rev=false, $meta=false) {
993    global $lang;
994
995    if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev));
996    $tags = media_file_tags($meta);
997
998    echo '<dl>';
999    foreach($tags as $tag){
1000        if ($tag['value']) {
1001            $value = cleanText($tag['value']);
1002            echo '<dt>'.$lang[$tag['tag'][1]].':</dt><dd>';
1003            if ($tag['tag'][2] == 'date') echo dformat($value);
1004            else echo hsc($value);
1005            echo '</dd>';
1006        }
1007    }
1008    echo '</dl>';
1009}
1010
1011/**
1012 * Shows difference between two revisions of file
1013 *
1014 * @author Kate Arzamastseva <pshns@ukr.net>
1015 */
1016function media_diff($image, $ns, $auth, $fromajax = false) {
1017    global $lang;
1018    global $conf;
1019
1020    if ($auth < AUTH_READ || !$image || !$conf['mediarevisions']) return '';
1021
1022    $rev1 = (int) $_REQUEST['rev'];
1023
1024    if(is_array($_REQUEST['rev2'])){
1025        $rev1 = (int) $_REQUEST['rev2'][0];
1026        $rev2 = (int) $_REQUEST['rev2'][1];
1027
1028        if(!$rev1){
1029            $rev1 = $rev2;
1030            unset($rev2);
1031        }
1032    }else{
1033        $rev2 = (int) $_REQUEST['rev2'];
1034    }
1035
1036    if ($rev1 && !file_exists(mediaFN($image, $rev1))) $rev1 = false;
1037    if ($rev2 && !file_exists(mediaFN($image, $rev2))) $rev2 = false;
1038
1039    if($rev1 && $rev2){            // two specific revisions wanted
1040        // make sure order is correct (older on the left)
1041        if($rev1 < $rev2){
1042            $l_rev = $rev1;
1043            $r_rev = $rev2;
1044        }else{
1045            $l_rev = $rev2;
1046            $r_rev = $rev1;
1047        }
1048    }elseif($rev1){                // single revision given, compare to current
1049        $r_rev = '';
1050        $l_rev = $rev1;
1051    }else{                        // no revision was given, compare previous to current
1052        $r_rev = '';
1053        $revs = getRevisions($image, 0, 1, 8192, true);
1054        if (file_exists(mediaFN($image, $revs[0]))) {
1055            $l_rev = $revs[0];
1056        } else {
1057            $l_rev = '';
1058        }
1059    }
1060
1061    // prepare event data
1062    $data[0] = $image;
1063    $data[1] = $l_rev;
1064    $data[2] = $r_rev;
1065    $data[3] = $ns;
1066    $data[4] = $auth;
1067    $data[5] = $fromajax;
1068
1069    // trigger event
1070    return trigger_event('MEDIA_DIFF', $data, '_media_file_diff', true);
1071
1072}
1073
1074function _media_file_diff($data) {
1075    if(is_array($data) && count($data)===6) {
1076        return media_file_diff($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
1077    } else {
1078        return false;
1079    }
1080}
1081
1082/**
1083 * Shows difference between two revisions of image
1084 *
1085 * @author Kate Arzamastseva <pshns@ukr.net>
1086 */
1087function media_file_diff($image, $l_rev, $r_rev, $ns, $auth, $fromajax){
1088    global $lang, $config_cascade;
1089
1090    $l_meta = new JpegMeta(mediaFN($image, $l_rev));
1091    $r_meta = new JpegMeta(mediaFN($image, $r_rev));
1092
1093    $is_img = preg_match("/\.(jpe?g|gif|png)$/", $image);
1094    if ($is_img) {
1095        $l_size = media_image_preview_size($image, $l_rev, $l_meta);
1096        $r_size = media_image_preview_size($image, $r_rev, $r_meta);
1097        $is_img = ($l_size && $r_size && ($l_size[0] >= 30 || $r_size[0] >= 30));
1098
1099        $difftype = $_REQUEST['difftype'];
1100
1101        if (!$fromajax) {
1102            $form = new Doku_Form(array('action'=>media_managerURL(array(), '&'), 'method' => 'get'
1103            ));
1104            $form->addHidden('sectok', null);
1105            $form->addElement('<input type="hidden" name="rev2[]" value="'.$l_rev.'" ></input>');
1106            $form->addElement('<input type="hidden" name="rev2[]" value="'.$r_rev.'" ></input>');
1107            $form->addHidden('mediado', 'diff');
1108            $form->printForm();
1109
1110            echo '<div id="mediamanager__diff" >';
1111        }
1112
1113        if ($difftype == 'opacity' || $difftype == 'portions') {
1114            media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $difftype);
1115            if (!$fromajax) echo '</div>';
1116            return '';
1117        }
1118    }
1119
1120    list($l_head, $r_head) = html_diff_head($l_rev, $r_rev, $image, true);
1121
1122    ?>
1123    <table>
1124      <tr>
1125        <th><?php echo $l_head; ?></th>
1126        <th><?php echo $r_head; ?></th>
1127      </tr>
1128    <?php
1129
1130    echo '<tr class="image">';
1131    echo '<td>';
1132    media_preview($image, $auth, $l_rev, $l_meta);
1133    echo '</td>';
1134
1135    echo '<td>';
1136    media_preview($image, $auth, $r_rev, $r_meta);
1137    echo '</td>';
1138    echo '</tr>';
1139
1140    echo '<tr class="actions">';
1141    echo '<td>';
1142    media_preview_buttons($image, $auth, $l_rev);
1143    echo '</td>';
1144
1145    echo '<td>';
1146    media_preview_buttons($image, $auth, $r_rev);
1147    echo '</td>';
1148    echo '</tr>';
1149
1150    $l_tags = media_file_tags($l_meta);
1151    $r_tags = media_file_tags($r_meta);
1152    // FIXME r_tags-only stuff
1153    foreach ($l_tags as $key => $l_tag) {
1154        if ($l_tag['value'] != $r_tags[$key]['value']) {
1155            $r_tags[$key]['highlighted'] = true;
1156            $l_tags[$key]['highlighted'] = true;
1157        } else if (!$l_tag['value'] || !$r_tags[$key]['value']) {
1158            unset($r_tags[$key]);
1159            unset($l_tags[$key]);
1160        }
1161    }
1162
1163    echo '<tr>';
1164    foreach(array($l_tags,$r_tags) as $tags){
1165        echo '<td>';
1166
1167        echo '<dl class="img_tags">';
1168        foreach($tags as $tag){
1169            $value = cleanText($tag['value']);
1170            if (!$value) $value = '-';
1171            echo '<dt>'.$lang[$tag['tag'][1]].':</dt>';
1172            echo '<dd>';
1173            if ($tag['highlighted']) {
1174                echo '<strong>';
1175            }
1176            if ($tag['tag'][2] == 'date') echo dformat($value);
1177            else echo hsc($value);
1178            if ($tag['highlighted']) {
1179                echo '</strong>';
1180            }
1181            echo '</dd>';
1182        }
1183        echo '</dl>';
1184
1185        echo '</td>';
1186    }
1187    echo '</tr>';
1188
1189    echo '</table>';
1190
1191    if ($is_img && !$fromajax) echo '</div>';
1192}
1193
1194/**
1195 * Prints two images side by side
1196 * and slider
1197 *
1198 * @author Kate Arzamastseva <pshns@ukr.net>
1199 * @param string $image
1200 * @param int $l_rev
1201 * @param int $r_rev
1202 * @param array $l_size
1203 * @param array $r_size
1204 * @param string $type
1205 */
1206function media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $type) {
1207    if ($l_size != $r_size) {
1208        if ($r_size[0] > $l_size[0]) {
1209            $l_size = $r_size;
1210        }
1211    }
1212
1213    echo '<div class="mediamanager-preview">';
1214
1215    $l_more = array('rev' => $l_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1216    $r_more = array('rev' => $r_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1217
1218    $l_src = ml($image, $l_more);
1219    $r_src = ml($image, $r_more);
1220
1221    // slider
1222    echo '<div id="diff_slider" style="max-width: '.($l_size[0]-20).'px;" ></div>';
1223
1224    // two images in divs
1225    echo '<div id="diff_' . $type . '">';
1226    echo '<div class="image1" style="max-width: '.$l_size[0].'px;">';
1227    echo '<img src="'.$l_src.'" alt="" />';
1228    echo '</div>';
1229    echo '<div class="image2" style="max-width: '.$l_size[0].'px;">';
1230    echo '<img src="'.$r_src.'" alt="" />';
1231    echo '</div>';
1232    echo '</div>';
1233
1234    echo '</div>';
1235}
1236
1237/**
1238 * Restores an old revision of a media file
1239 *
1240 * @param string $image
1241 * @param int $rev
1242 * @param int $auth
1243 * @return string - file's id
1244 * @author Kate Arzamastseva <pshns@ukr.net>
1245 */
1246function media_restore($image, $rev, $auth){
1247    global $conf;
1248    if ($auth < AUTH_UPLOAD || !$conf['mediarevisions']) return false;
1249    $removed = (!file_exists(mediaFN($image)) && file_exists(mediaMetaFN($image, '.changes')));
1250    if (!$image || (!file_exists(mediaFN($image)) && !$removed)) return false;
1251    if (!$rev || !file_exists(mediaFN($image, $rev))) return false;
1252    list($iext,$imime,$dl) = mimetype($image);
1253    $res = media_upload_finish(mediaFN($image, $rev),
1254        mediaFN($image),
1255        $image,
1256        $imime,
1257        true,
1258        'copy');
1259    if (is_array($res)) {
1260        msg($res[0], $res[1]);
1261        return false;
1262    }
1263    return $res;
1264}
1265
1266/**
1267 * List all files found by the search request
1268 *
1269 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1270 * @author Andreas Gohr <gohr@cosmocode.de>
1271 * @author Kate Arzamastseva <pshns@ukr.net>
1272 * @triggers MEDIA_SEARCH
1273 */
1274function media_searchlist($query,$ns,$auth=null,$fullscreen=false,$sort=''){
1275    global $conf;
1276    global $lang;
1277
1278    $ns = cleanID($ns);
1279
1280    if ($query) {
1281        $evdata = array(
1282                'ns'    => $ns,
1283                'data'  => array(),
1284                'query' => $query
1285                );
1286        $evt = new Doku_Event('MEDIA_SEARCH', $evdata);
1287        if ($evt->advise_before()) {
1288            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
1289            $pattern = '/'.preg_quote($evdata['query'],'/').'/i';
1290            search($evdata['data'],
1291                    $conf['mediadir'],
1292                    'search_media',
1293                    array('showmsg'=>false,'pattern'=>$pattern),
1294                    $dir);
1295        }
1296
1297        $data = array();
1298        foreach ($evdata['data'] as $k => $v) {
1299            $data[$k] = ($sort == 'date') ? $v['mtime'] : $v['id'];
1300        }
1301        array_multisort($data, SORT_DESC, SORT_NUMERIC, $evdata['data']);
1302
1303        $evt->advise_after();
1304        unset($evt);
1305    }
1306
1307    if (!$fullscreen) {
1308        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
1309        media_searchform($ns,$query);
1310    }
1311
1312    if(!count($evdata['data'])){
1313        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
1314    }else {
1315        if ($fullscreen) {
1316            $view = $_REQUEST['view'];
1317            if ($view == 'list') {
1318                echo '<ul class="mediamanager-list" id="mediamanager__file_list">';
1319            } else {
1320                echo '<ul class="mediamanager-thumbs" id="mediamanager__file_list">';
1321            }
1322        }
1323        foreach($evdata['data'] as $item){
1324            if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
1325            else media_printfile_thumbs($item,$item['perm'],false,true);
1326        }
1327        if ($fullscreen) echo '</ul>';
1328    }
1329}
1330
1331/**
1332 * Formats and prints one file in the list
1333 */
1334function media_printfile($item,$auth,$jump,$display_namespace=false){
1335    global $lang;
1336    global $conf;
1337
1338    // Prepare zebra coloring
1339    // I always wanted to use this variable name :-D
1340    static $twibble = 1;
1341    $twibble *= -1;
1342    $zebra = ($twibble == -1) ? 'odd' : 'even';
1343
1344    // Automatically jump to recent action
1345    if($jump == $item['id']) {
1346        $jump = ' id="scroll__here" ';
1347    }else{
1348        $jump = '';
1349    }
1350
1351    // Prepare fileicons
1352    list($ext,$mime,$dl) = mimetype($item['file'],false);
1353    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
1354    $class = 'select mediafile mf_'.$class;
1355
1356    // Prepare filename
1357    $file = utf8_decodeFN($item['file']);
1358
1359    // Prepare info
1360    $info = '';
1361    if($item['isimg']){
1362        $info .= (int) $item['meta']->getField('File.Width');
1363        $info .= '&#215;';
1364        $info .= (int) $item['meta']->getField('File.Height');
1365        $info .= ' ';
1366    }
1367    $info .= '<i>'.dformat($item['mtime']).'</i>';
1368    $info .= ' ';
1369    $info .= filesize_h($item['size']);
1370
1371    // output
1372    echo '<div class="'.$zebra.'"'.$jump.'>'.NL;
1373    if (!$display_namespace) {
1374        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
1375    } else {
1376        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
1377    }
1378    echo '<span class="info">('.$info.')</span>'.NL;
1379
1380    // view button
1381    $link = ml($item['id'],'',true);
1382    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
1383        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
1384
1385    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
1386    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
1387    echo '</div>';
1388    if($item['isimg']) media_printimgdetail($item);
1389    echo '<div class="clearer"></div>'.NL;
1390    echo '</div>'.NL;
1391}
1392
1393function media_printicon($filename){
1394    list($ext,$mime,$dl) = mimetype(mediaFN($filename),false);
1395
1396    if (@file_exists(DOKU_INC.'lib/images/fileicons/'.$ext.'.png')) {
1397        $icon = DOKU_BASE.'lib/images/fileicons/'.$ext.'.png';
1398    } else {
1399        $icon = DOKU_BASE.'lib/images/fileicons/file.png';
1400    }
1401
1402    return '<img src="'.$icon.'" alt="'.$filename.'" class="icon" />';
1403
1404}
1405
1406/**
1407 * Formats and prints one file in the list in the thumbnails view
1408 *
1409 * @author Kate Arzamastseva <pshns@ukr.net>
1410 */
1411function media_printfile_thumbs($item,$auth,$jump=false,$display_namespace=false){
1412    global $lang;
1413    global $conf;
1414
1415    // Prepare filename
1416    $file = utf8_decodeFN($item['file']);
1417
1418    // output
1419    echo '<li><dl>';
1420
1421        echo '<dt>';
1422    if($item['isimg']) {
1423        media_printimgdetail($item, true);
1424
1425    } else {
1426        echo '<a name="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1427            media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1428            'tab_details' => 'view')).'">';
1429        echo media_printicon($item['id']);
1430        echo '</a>';
1431    }
1432    echo '</dt>';
1433    //echo '<input type=checkbox />';
1434    if (!$display_namespace) {
1435        $name = hsc($file);
1436    } else {
1437        $name = hsc($item['id']);
1438    }
1439    echo '<dd class="name"><a href="'.media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1440        'tab_details' => 'view')).'" name="h_:'.$item['id'].'">'.$name.'</a></dd>';
1441
1442    if($item['isimg']){
1443        $size = '';
1444        $size .= (int) $item['meta']->getField('File.Width');
1445        $size .= '&#215;';
1446        $size .= (int) $item['meta']->getField('File.Height');
1447        echo '<dd class="size">'.$size.'</dd>';
1448    } else {
1449        echo '<dd class="size">&nbsp;</dd>';
1450    }
1451    $date = dformat($item['mtime']);
1452    echo '<dd class="date">'.$date.'</dd>';
1453    $filesize = filesize_h($item['size']);
1454    echo '<dd class="filesize">'.$filesize.'</dd>';
1455    echo '</dl></li>'.NL;
1456}
1457
1458/**
1459 * Prints a thumbnail and metainfos
1460 */
1461function media_printimgdetail($item, $fullscreen=false){
1462    // prepare thumbnail
1463    if (!$fullscreen) {
1464        $size_array[] = 120;
1465    } else {
1466        $size_array = array(90, 40);
1467    }
1468    foreach ($size_array as $index => $size) {
1469        $w = (int) $item['meta']->getField('File.Width');
1470        $h = (int) $item['meta']->getField('File.Height');
1471        if($w>$size || $h>$size){
1472            if (!$fullscreen) {
1473                $ratio = $item['meta']->getResizeRatio($size);
1474            } else {
1475                $ratio = $item['meta']->getResizeRatio($size,$size);
1476            }
1477            $w = floor($w * $ratio);
1478            $h = floor($h * $ratio);
1479        }
1480        $src = ml($item['id'],array('w'=>$w,'h'=>$h,'t'=>$item['mtime']));
1481        $p = array();
1482        if (!$fullscreen) {
1483            $p['width']  = $w;
1484            $p['height'] = $h;
1485        }
1486        $p['alt']    = $item['id'];
1487        $p['class']  = 'thumb';
1488        $att = buildAttributes($p);
1489
1490        // output
1491        if ($fullscreen) {
1492            echo '<a name="'.($index ? 'd' : 'l').'_:'.$item['id'].'" class="image'.$index.'" title="'.$item['id'].'" href="'.
1493                media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']), 'tab_details' => 'view')).'">';
1494            echo '<span><img src="'.$src.'" '.$att.' /></span>';
1495            echo '</a>';
1496        }
1497    }
1498
1499    if ($fullscreen) return '';
1500
1501    echo '<div class="detail">';
1502    echo '<div class="thumb">';
1503    echo '<a name="d_:'.$item['id'].'" class="select">';
1504    echo '<img src="'.$src.'" '.$att.' />';
1505    echo '</a>';
1506    echo '</div>';
1507
1508    // read EXIF/IPTC data
1509    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
1510    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
1511                'EXIF.TIFFImageDescription',
1512                'EXIF.TIFFUserComment'));
1513    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
1514    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
1515
1516    // print EXIF/IPTC data
1517    if($t || $d || $k ){
1518        echo '<p>';
1519        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
1520        if($d) echo htmlspecialchars($d).'<br />';
1521        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
1522        echo '</p>';
1523    }
1524    echo '</div>';
1525}
1526
1527/**
1528 * Build link based on the current, adding/rewriting
1529 * parameters
1530 *
1531 * @author Kate Arzamastseva <pshns@ukr.net>
1532 * @param array $params
1533 * @param string $amp - separator
1534 * @return string - link
1535 */
1536function media_managerURL($params=false, $amp='&amp;', $abs=false, $params_array=false) {
1537    global $conf;
1538    global $ID;
1539
1540    $gets = array('do' => 'media');
1541    $media_manager_params = array('tab_files', 'tab_details', 'image', 'ns', 'view');
1542    foreach ($media_manager_params as $x) {
1543        if (isset($_REQUEST[$x])) $gets[$x] = $_REQUEST[$x];
1544    }
1545
1546    if ($params) {
1547        foreach ($params as $k => $v) {
1548            $gets[$k] = $v;
1549        }
1550    }
1551    unset($gets['id']);
1552    if ($gets['delete']) {
1553        unset($gets['image']);
1554        unset($gets['tab_details']);
1555    }
1556
1557    if ($params_array) return $gets;
1558
1559    return wl($ID,$gets,$abs,$amp);
1560}
1561
1562/**
1563 * Print the media upload form if permissions are correct
1564 *
1565 * @author Andreas Gohr <andi@splitbrain.org>
1566 * @author Kate Arzamastseva <pshns@ukr.net>
1567 */
1568function media_uploadform($ns, $auth, $fullscreen = false){
1569    global $lang, $conf;
1570
1571    if($auth < AUTH_UPLOAD) {
1572        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
1573        return;
1574    }
1575    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
1576
1577    $update = false;
1578    $id = '';
1579    if ($auth >= $auth_ow && $fullscreen && $_REQUEST['mediado'] == 'update') {
1580        $update = true;
1581        $id = cleanID($_REQUEST['image']);
1582    }
1583
1584    // The default HTML upload form
1585    $params = array('id'      => 'dw__upload',
1586                    'enctype' => 'multipart/form-data');
1587    if (!$fullscreen) {
1588        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1589    } else {
1590        $params['action'] = media_managerURL(array('tab_files' => 'files',
1591            'tab_details' => 'view'), '&');
1592    }
1593
1594    $form = new Doku_Form($params);
1595    if (!$fullscreen) echo '<div class="upload">' . $lang['mediaupload'] . '</div>';
1596    $form->addElement(formSecurityToken());
1597    $form->addHidden('ns', hsc($ns));
1598    $form->addElement(form_makeOpenTag('p'));
1599    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
1600    $form->addElement(form_makeCloseTag('p'));
1601    $form->addElement(form_makeOpenTag('p'));
1602    $form->addElement(form_makeTextField('mediaid', noNS($id), $lang['txt_filename'].':', 'upload__name'));
1603    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
1604    $form->addElement(form_makeCloseTag('p'));
1605
1606    if($auth >= $auth_ow){
1607        $form->addElement(form_makeOpenTag('p'));
1608        $attrs = array();
1609        if ($update) $attrs['checked'] = 'checked';
1610        $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check', $attrs));
1611        $form->addElement(form_makeCloseTag('p'));
1612    }
1613
1614    echo '<div id="mediamanager__uploader">';
1615    html_form('upload', $form);
1616    echo '</div>';
1617}
1618
1619/**
1620 * Print the search field form
1621 *
1622 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1623 * @author Kate Arzamastseva <pshns@ukr.net>
1624 */
1625function media_searchform($ns,$query='',$fullscreen=false){
1626    global $lang;
1627
1628    // The default HTML search form
1629    $params = array('id' => 'dw__mediasearch');
1630    if (!$fullscreen) $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1631    else $params['action'] = media_managerURL(array(), '&');
1632    $form = new Doku_Form($params);
1633    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediasearch'] . '</div>');
1634    $form->addHidden('ns', $ns);
1635    if (!$fullscreen) $form->addHidden('do', 'searchlist');
1636    else $form->addHidden('mediado', 'searchlist');
1637    $form->addElement(form_makeOpenTag('p'));
1638    $form->addElement(form_makeTextField('q', $query,$lang['searchmedia'],'mediamanager__sort_textfield','',array('title'=>sprintf($lang['searchmedia_in'],hsc($ns).':*'))));
1639    $form->addElement(form_makeButton('submit', '', $lang['btn_search']));
1640    $form->addElement(form_makeCloseTag('p'));
1641    html_form('searchmedia', $form);
1642}
1643
1644/**
1645 * Build a tree outline of available media namespaces
1646 *
1647 * @author Andreas Gohr <andi@splitbrain.org>
1648 */
1649function media_nstree($ns){
1650    global $conf;
1651    global $lang;
1652
1653    // currently selected namespace
1654    $ns  = cleanID($ns);
1655    if(empty($ns)){
1656        global $ID;
1657        $ns = dirname(str_replace(':','/',$ID));
1658        if($ns == '.') $ns ='';
1659    }
1660    $ns  = utf8_encodeFN(str_replace(':','/',$ns));
1661
1662    $data = array();
1663    search($data,$conf['mediadir'],'search_index',array('ns' => $ns, 'nofiles' => true));
1664
1665    // wrap a list with the root level around the other namespaces
1666    array_unshift($data, array('level' => 0, 'id' => '', 'open' =>'true',
1667                               'label' => '['.$lang['mediaroot'].']'));
1668
1669    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
1670}
1671
1672/**
1673 * Userfunction for html_buildlist
1674 *
1675 * Prints a media namespace tree item
1676 *
1677 * @author Andreas Gohr <andi@splitbrain.org>
1678 */
1679function media_nstree_item($item){
1680    $pos   = strrpos($item['id'], ':');
1681    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
1682    if(!$item['label']) $item['label'] = $label;
1683
1684    $ret  = '';
1685    if (!($_REQUEST['do'] == 'media'))
1686    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
1687    else $ret .= '<a href="'.media_managerURL(array('ns' => idfilter($item['id']), 'tab_files' => 'files'))
1688        .'" class="idx_dir">';
1689    $ret .= $item['label'];
1690    $ret .= '</a>';
1691    return $ret;
1692}
1693
1694/**
1695 * Userfunction for html_buildlist
1696 *
1697 * Prints a media namespace tree item opener
1698 *
1699 * @author Andreas Gohr <andi@splitbrain.org>
1700 */
1701function media_nstree_li($item){
1702    $class='media level'.$item['level'];
1703    if($item['open']){
1704        $class .= ' open';
1705        $img   = DOKU_BASE.'lib/images/minus.gif';
1706        $alt   = '&minus;';
1707    }else{
1708        $class .= ' closed';
1709        $img   = DOKU_BASE.'lib/images/plus.gif';
1710        $alt   = '+';
1711    }
1712    // TODO: only deliver an image if it actually has a subtree...
1713    return '<li class="'.$class.'">'.
1714        '<img src="'.$img.'" alt="'.$alt.'" />';
1715}
1716
1717/**
1718 * Resizes the given image to the given size
1719 *
1720 * @author  Andreas Gohr <andi@splitbrain.org>
1721 */
1722function media_resize_image($file, $ext, $w, $h=0){
1723    global $conf;
1724
1725    $info = @getimagesize($file); //get original size
1726    if($info == false) return $file; // that's no image - it's a spaceship!
1727
1728    if(!$h) $h = round(($w * $info[1]) / $info[0]);
1729
1730    // we wont scale up to infinity
1731    if($w > 2000 || $h > 2000) return $file;
1732
1733    //cache
1734    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
1735    $mtime = @filemtime($local); // 0 if not exists
1736
1737    if( $mtime > filemtime($file) ||
1738            media_resize_imageIM($ext,$file,$info[0],$info[1],$local,$w,$h) ||
1739            media_resize_imageGD($ext,$file,$info[0],$info[1],$local,$w,$h) ){
1740        if($conf['fperm']) chmod($local, $conf['fperm']);
1741        return $local;
1742    }
1743    //still here? resizing failed
1744    return $file;
1745}
1746
1747/**
1748 * Crops the given image to the wanted ratio, then calls media_resize_image to scale it
1749 * to the wanted size
1750 *
1751 * Crops are centered horizontally but prefer the upper third of an vertical
1752 * image because most pics are more interesting in that area (rule of thirds)
1753 *
1754 * @author  Andreas Gohr <andi@splitbrain.org>
1755 */
1756function media_crop_image($file, $ext, $w, $h=0){
1757    global $conf;
1758
1759    if(!$h) $h = $w;
1760    $info = @getimagesize($file); //get original size
1761    if($info == false) return $file; // that's no image - it's a spaceship!
1762
1763    // calculate crop size
1764    $fr = $info[0]/$info[1];
1765    $tr = $w/$h;
1766    if($tr >= 1){
1767        if($tr > $fr){
1768            $cw = $info[0];
1769            $ch = (int) $info[0]/$tr;
1770        }else{
1771            $cw = (int) $info[1]*$tr;
1772            $ch = $info[1];
1773        }
1774    }else{
1775        if($tr < $fr){
1776            $cw = (int) $info[1]*$tr;
1777            $ch = $info[1];
1778        }else{
1779            $cw = $info[0];
1780            $ch = (int) $info[0]/$tr;
1781        }
1782    }
1783    // calculate crop offset
1784    $cx = (int) ($info[0]-$cw)/2;
1785    $cy = (int) ($info[1]-$ch)/3;
1786
1787    //cache
1788    $local = getCacheName($file,'.media.'.$cw.'x'.$ch.'.crop.'.$ext);
1789    $mtime = @filemtime($local); // 0 if not exists
1790
1791    if( $mtime > filemtime($file) ||
1792            media_crop_imageIM($ext,$file,$info[0],$info[1],$local,$cw,$ch,$cx,$cy) ||
1793            media_resize_imageGD($ext,$file,$cw,$ch,$local,$cw,$ch,$cx,$cy) ){
1794        if($conf['fperm']) chmod($local, $conf['fperm']);
1795        return media_resize_image($local,$ext, $w, $h);
1796    }
1797
1798    //still here? cropping failed
1799    return media_resize_image($file,$ext, $w, $h);
1800}
1801
1802/**
1803 * Download a remote file and return local filename
1804 *
1805 * returns false if download fails. Uses cached file if available and
1806 * wanted
1807 *
1808 * @author  Andreas Gohr <andi@splitbrain.org>
1809 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
1810 */
1811function media_get_from_URL($url,$ext,$cache){
1812    global $conf;
1813
1814    // if no cache or fetchsize just redirect
1815    if ($cache==0)           return false;
1816    if (!$conf['fetchsize']) return false;
1817
1818    $local = getCacheName(strtolower($url),".media.$ext");
1819    $mtime = @filemtime($local); // 0 if not exists
1820
1821    //decide if download needed:
1822    if( ($mtime == 0) ||                           // cache does not exist
1823            ($cache != -1 && $mtime < time()-$cache)   // 'recache' and cache has expired
1824      ){
1825        if(media_image_download($url,$local)){
1826            return $local;
1827        }else{
1828            return false;
1829        }
1830    }
1831
1832    //if cache exists use it else
1833    if($mtime) return $local;
1834
1835    //else return false
1836    return false;
1837}
1838
1839/**
1840 * Download image files
1841 *
1842 * @author Andreas Gohr <andi@splitbrain.org>
1843 */
1844function media_image_download($url,$file){
1845    global $conf;
1846    $http = new DokuHTTPClient();
1847    $http->max_bodysize = $conf['fetchsize'];
1848    $http->timeout = 25; //max. 25 sec
1849    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
1850
1851    $data = $http->get($url);
1852    if(!$data) return false;
1853
1854    $fileexists = @file_exists($file);
1855    $fp = @fopen($file,"w");
1856    if(!$fp) return false;
1857    fwrite($fp,$data);
1858    fclose($fp);
1859    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
1860
1861    // check if it is really an image
1862    $info = @getimagesize($file);
1863    if(!$info){
1864        @unlink($file);
1865        return false;
1866    }
1867
1868    return true;
1869}
1870
1871/**
1872 * resize images using external ImageMagick convert program
1873 *
1874 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
1875 * @author Andreas Gohr <andi@splitbrain.org>
1876 */
1877function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
1878    global $conf;
1879
1880    // check if convert is configured
1881    if(!$conf['im_convert']) return false;
1882
1883    // prepare command
1884    $cmd  = $conf['im_convert'];
1885    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
1886    if ($ext == 'jpg' || $ext == 'jpeg') {
1887        $cmd .= ' -quality '.$conf['jpg_quality'];
1888    }
1889    $cmd .= " $from $to";
1890
1891    @exec($cmd,$out,$retval);
1892    if ($retval == 0) return true;
1893    return false;
1894}
1895
1896/**
1897 * crop images using external ImageMagick convert program
1898 *
1899 * @author Andreas Gohr <andi@splitbrain.org>
1900 */
1901function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
1902    global $conf;
1903
1904    // check if convert is configured
1905    if(!$conf['im_convert']) return false;
1906
1907    // prepare command
1908    $cmd  = $conf['im_convert'];
1909    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
1910    if ($ext == 'jpg' || $ext == 'jpeg') {
1911        $cmd .= ' -quality '.$conf['jpg_quality'];
1912    }
1913    $cmd .= " $from $to";
1914
1915    @exec($cmd,$out,$retval);
1916    if ($retval == 0) return true;
1917    return false;
1918}
1919
1920/**
1921 * resize or crop images using PHP's libGD support
1922 *
1923 * @author Andreas Gohr <andi@splitbrain.org>
1924 * @author Sebastian Wienecke <s_wienecke@web.de>
1925 */
1926function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
1927    global $conf;
1928
1929    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
1930
1931    // check available memory
1932    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
1933        return false;
1934    }
1935
1936    // create an image of the given filetype
1937    if ($ext == 'jpg' || $ext == 'jpeg'){
1938        if(!function_exists("imagecreatefromjpeg")) return false;
1939        $image = @imagecreatefromjpeg($from);
1940    }elseif($ext == 'png') {
1941        if(!function_exists("imagecreatefrompng")) return false;
1942        $image = @imagecreatefrompng($from);
1943
1944    }elseif($ext == 'gif') {
1945        if(!function_exists("imagecreatefromgif")) return false;
1946        $image = @imagecreatefromgif($from);
1947    }
1948    if(!$image) return false;
1949
1950    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
1951        $newimg = @imagecreatetruecolor ($to_w, $to_h);
1952    }
1953    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
1954    if(!$newimg){
1955        imagedestroy($image);
1956        return false;
1957    }
1958
1959    //keep png alpha channel if possible
1960    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
1961        imagealphablending($newimg, false);
1962        imagesavealpha($newimg,true);
1963    }
1964
1965    //keep gif transparent color if possible
1966    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
1967        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
1968            $transcolorindex = @imagecolortransparent($image);
1969            if($transcolorindex >= 0 ) { //transparent color exists
1970                $transcolor = @imagecolorsforindex($image, $transcolorindex);
1971                $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
1972                @imagefill($newimg, 0, 0, $transcolorindex);
1973                @imagecolortransparent($newimg, $transcolorindex);
1974            }else{ //filling with white
1975                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1976                @imagefill($newimg, 0, 0, $whitecolorindex);
1977            }
1978        }else{ //filling with white
1979            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1980            @imagefill($newimg, 0, 0, $whitecolorindex);
1981        }
1982    }
1983
1984    //try resampling first
1985    if(function_exists("imagecopyresampled")){
1986        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
1987            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1988        }
1989    }else{
1990        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1991    }
1992
1993    $okay = false;
1994    if ($ext == 'jpg' || $ext == 'jpeg'){
1995        if(!function_exists('imagejpeg')){
1996            $okay = false;
1997        }else{
1998            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
1999        }
2000    }elseif($ext == 'png') {
2001        if(!function_exists('imagepng')){
2002            $okay = false;
2003        }else{
2004            $okay =  imagepng($newimg, $to);
2005        }
2006    }elseif($ext == 'gif') {
2007        if(!function_exists('imagegif')){
2008            $okay = false;
2009        }else{
2010            $okay = imagegif($newimg, $to);
2011        }
2012    }
2013
2014    // destroy GD image ressources
2015    if($image) imagedestroy($image);
2016    if($newimg) imagedestroy($newimg);
2017
2018    return $okay;
2019}
2020
2021/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
2022