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
9use dokuwiki\ChangeLog\MediaChangeLog;
10use dokuwiki\HTTP\DokuHTTPClient;
11use dokuwiki\Subscriptions\MediaSubscriptionSender;
12use dokuwiki\Extension\Event;
13use dokuwiki\Form\Form;
14use dokuwiki\Utf8\Sort;
15
16/**
17 * Lists pages which currently use a media file selected for deletion
18 *
19 * References uses the same visual as search results and share
20 * their CSS tags except pagenames won't be links.
21 *
22 * @author Matthias Grimm <matthiasgrimm@users.sourceforge.net>
23 *
24 * @param array $data
25 * @param string $id
26 */
27function media_filesinuse($data,$id){
28    global $lang;
29    echo '<h1>'.$lang['reference'].' <code>'.hsc(noNS($id)).'</code></h1>';
30    echo '<p>'.hsc($lang['ref_inuse']).'</p>';
31
32    $hidden=0; //count of hits without read permission
33    foreach($data as $row){
34        if(auth_quickaclcheck($row) >= AUTH_READ && isVisiblePage($row)){
35            echo '<div class="search_result">';
36            echo '<span class="mediaref_ref">'.hsc($row).'</span>';
37            echo '</div>';
38        }else
39            $hidden++;
40    }
41    if ($hidden){
42        print '<div class="mediaref_hidden">'.$lang['ref_hidden'].'</div>';
43    }
44}
45
46/**
47 * Handles the saving of image meta data
48 *
49 * @author Andreas Gohr <andi@splitbrain.org>
50 * @author Kate Arzamastseva <pshns@ukr.net>
51 *
52 * @param string $id media id
53 * @param int $auth permission level
54 * @param array $data
55 * @return false|string
56 */
57function media_metasave($id,$auth,$data){
58    if($auth < AUTH_UPLOAD) return false;
59    if(!checkSecurityToken()) return false;
60    global $lang;
61    global $conf;
62    $src = mediaFN($id);
63
64    $meta = new JpegMeta($src);
65    $meta->_parseAll();
66
67    foreach($data as $key => $val){
68        $val=trim($val);
69        if(empty($val)){
70            $meta->deleteField($key);
71        }else{
72            $meta->setField($key,$val);
73        }
74    }
75
76    $old = @filemtime($src);
77    if(!file_exists(mediaFN($id, $old)) && file_exists($src)) {
78        // add old revision to the attic
79        media_saveOldRevision($id);
80    }
81    $filesize_old = filesize($src);
82    if($meta->save()){
83        if($conf['fperm']) chmod($src, $conf['fperm']);
84        @clearstatcache(true, $src);
85        $new = @filemtime($src);
86        $filesize_new = filesize($src);
87        $sizechange = $filesize_new - $filesize_old;
88
89        // add a log entry to the media changelog
90        addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT, $lang['media_meta_edited'], '', null, $sizechange);
91
92        msg($lang['metasaveok'],1);
93        return $id;
94    }else{
95        msg($lang['metasaveerr'],-1);
96        return false;
97    }
98}
99
100/**
101 * check if a media is external source
102 *
103 * @author Gerrit Uitslag <klapinklapin@gmail.com>
104 *
105 * @param string $id the media ID or URL
106 * @return bool
107 */
108function media_isexternal($id){
109    if (preg_match('#^(?:https?|ftp)://#i', $id)) return true;
110    return false;
111}
112
113/**
114 * Check if a media item is public (eg, external URL or readable by @ALL)
115 *
116 * @author Andreas Gohr <andi@splitbrain.org>
117 *
118 * @param string $id  the media ID or URL
119 * @return bool
120 */
121function media_ispublic($id){
122    if(media_isexternal($id)) return true;
123    $id = cleanID($id);
124    if(auth_aclcheck(getNS($id).':*', '', array()) >= AUTH_READ) return true;
125    return false;
126}
127
128/**
129 * Display the form to edit image meta data
130 *
131 * @author Andreas Gohr <andi@splitbrain.org>
132 * @author Kate Arzamastseva <pshns@ukr.net>
133 *
134 * @param string $id media id
135 * @param int $auth permission level
136 * @return bool
137 */
138function media_metaform($id, $auth) {
139    global $lang;
140
141    if ($auth < AUTH_UPLOAD) {
142        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.DOKU_LF;
143        return false;
144    }
145
146    // load the field descriptions
147    static $fields = null;
148    if ($fields === null) {
149        $config_files = getConfigFiles('mediameta');
150        foreach ($config_files as $config_file) {
151            if (file_exists($config_file)) include($config_file);
152        }
153    }
154
155    $src = mediaFN($id);
156
157    // output
158    $form = new Form([
159            'action' => media_managerURL(['tab_details' => 'view'], '&'),
160            'class' => 'meta'
161    ]);
162    $form->addTagOpen('div')->addClass('no');
163    $form->setHiddenField('img', $id);
164    $form->setHiddenField('mediado', 'save');
165    foreach ($fields as $key => $field) {
166        // get current value
167        if (empty($field[0])) continue;
168        $tags = array($field[0]);
169        if (is_array($field[3])) $tags = array_merge($tags, $field[3]);
170        $value = tpl_img_getTag($tags, '', $src);
171        $value = cleanText($value);
172
173        // prepare attributes
174        $p = array(
175            'class' => 'edit',
176            'id'    => 'meta__'.$key,
177            'name'  => 'meta['.$field[0].']',
178        );
179
180        $form->addTagOpen('div')->addClass('row');
181        if ($field[2] == 'text') {
182            $form->addTextInput(
183                $p['name'],
184                ($lang[$field[1]] ? $lang[$field[1]] : $field[1] . ':')
185            )->id($p['id'])->addClass($p['class'])->val($value);
186        } else {
187            $form->addTextarea($p['name'], $lang[$field[1]])->id($p['id'])
188                ->val(formText($value))
189                ->addClass($p['class'])
190                ->attr('rows', '6')->attr('cols', '50');
191        }
192        $form->addTagClose('div');
193    }
194    $form->addTagOpen('div')->addClass('buttons');
195    $form->addButton('mediado[save]', $lang['btn_save'])->attr('type', 'submit')
196        ->attrs(['accesskey' => 's']);
197    $form->addTagClose('div');
198
199    $form->addTagClose('div');
200    echo $form->toHTML();
201    return true;
202}
203
204/**
205 * Convenience function to check if a media file is still in use
206 *
207 * @author Michael Klier <chi@chimeric.de>
208 *
209 * @param string $id media id
210 * @return array|bool
211 */
212function media_inuse($id) {
213    global $conf;
214
215    if($conf['refcheck']){
216        $mediareferences = ft_mediause($id,true);
217        if(!count($mediareferences)) {
218            return false;
219        } else {
220            return $mediareferences;
221        }
222    } else {
223        return false;
224    }
225}
226
227/**
228 * Handles media file deletions
229 *
230 * If configured, checks for media references before deletion
231 *
232 * @author             Andreas Gohr <andi@splitbrain.org>
233 *
234 * @param string $id media id
235 * @param int $auth no longer used
236 * @return int One of: 0,
237 *                     DOKU_MEDIA_DELETED,
238 *                     DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS,
239 *                     DOKU_MEDIA_NOT_AUTH,
240 *                     DOKU_MEDIA_INUSE
241 */
242function media_delete($id,$auth){
243    global $lang;
244    $auth = auth_quickaclcheck(ltrim(getNS($id).':*', ':'));
245    if($auth < AUTH_DELETE) return DOKU_MEDIA_NOT_AUTH;
246    if(media_inuse($id)) return DOKU_MEDIA_INUSE;
247
248    $file = mediaFN($id);
249
250    // trigger an event - MEDIA_DELETE_FILE
251    $data = array();
252    $data['id']   = $id;
253    $data['name'] = \dokuwiki\Utf8\PhpString::basename($file);
254    $data['path'] = $file;
255    $data['size'] = (file_exists($file)) ? filesize($file) : 0;
256
257    $data['unl'] = false;
258    $data['del'] = false;
259    $evt = new Event('MEDIA_DELETE_FILE',$data);
260    if ($evt->advise_before()) {
261        $old = @filemtime($file);
262        if(!file_exists(mediaFN($id, $old)) && file_exists($file)) {
263            // add old revision to the attic
264            media_saveOldRevision($id);
265        }
266
267        $data['unl'] = @unlink($file);
268        if($data['unl']) {
269            $sizechange = 0 - $data['size'];
270            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_DELETE, $lang['deleted'], '', null, $sizechange);
271
272            $data['del'] = io_sweepNS($id, 'mediadir');
273        }
274    }
275    $evt->advise_after();
276    unset($evt);
277
278    if($data['unl'] && $data['del']){
279        return DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS;
280    }
281
282    return $data['unl'] ? DOKU_MEDIA_DELETED : 0;
283}
284
285/**
286 * Handle file uploads via XMLHttpRequest
287 *
288 * @param string $ns   target namespace
289 * @param int    $auth current auth check result
290 * @return false|string false on error, id of the new file on success
291 */
292function media_upload_xhr($ns,$auth){
293    if(!checkSecurityToken()) return false;
294    global $INPUT;
295
296    $id = $INPUT->get->str('qqfile');
297    list($ext,$mime) = mimetype($id);
298    $input = fopen("php://input", "r");
299    if (!($tmp = io_mktmpdir())) return false;
300    $path = $tmp.'/'.md5($id);
301    $target = fopen($path, "w");
302    $realSize = stream_copy_to_stream($input, $target);
303    fclose($target);
304    fclose($input);
305    if (isset($_SERVER["CONTENT_LENGTH"]) && ($realSize != (int)$_SERVER["CONTENT_LENGTH"])){
306        unlink($path);
307        return false;
308    }
309
310    $res = media_save(
311        array('name' => $path,
312            'mime' => $mime,
313            'ext'  => $ext),
314        $ns.':'.$id,
315        (($INPUT->get->str('ow') == 'true') ? true : false),
316        $auth,
317        'copy'
318    );
319    unlink($path);
320    if ($tmp) io_rmdir($tmp, true);
321    if (is_array($res)) {
322        msg($res[0], $res[1]);
323        return false;
324    }
325    return $res;
326}
327
328/**
329 * Handles media file uploads
330 *
331 * @author Andreas Gohr <andi@splitbrain.org>
332 * @author Michael Klier <chi@chimeric.de>
333 *
334 * @param string     $ns    target namespace
335 * @param int        $auth  current auth check result
336 * @param bool|array $file  $_FILES member, $_FILES['upload'] if false
337 * @return false|string false on error, id of the new file on success
338 */
339function media_upload($ns,$auth,$file=false){
340    if(!checkSecurityToken()) return false;
341    global $lang;
342    global $INPUT;
343
344    // get file and id
345    $id   = $INPUT->post->str('mediaid');
346    if (!$file) $file = $_FILES['upload'];
347    if(empty($id)) $id = $file['name'];
348
349    // check for errors (messages are done in lib/exe/mediamanager.php)
350    if($file['error']) return false;
351
352    // check extensions
353    list($fext,$fmime) = mimetype($file['name']);
354    list($iext,$imime) = mimetype($id);
355    if($fext && !$iext){
356        // no extension specified in id - read original one
357        $id   .= '.'.$fext;
358        $imime = $fmime;
359    }elseif($fext && $fext != $iext){
360        // extension was changed, print warning
361        msg(sprintf($lang['mediaextchange'],$fext,$iext));
362    }
363
364    $res = media_save(array('name' => $file['tmp_name'],
365                            'mime' => $imime,
366                            'ext'  => $iext), $ns.':'.$id,
367                      $INPUT->post->bool('ow'), $auth, 'copy_uploaded_file');
368    if (is_array($res)) {
369        msg($res[0], $res[1]);
370        return false;
371    }
372    return $res;
373}
374
375/**
376 * An alternative to move_uploaded_file that copies
377 *
378 * Using copy, makes sure any setgid bits on the media directory are honored
379 *
380 * @see   move_uploaded_file()
381 *
382 * @param string $from
383 * @param string $to
384 * @return bool
385 */
386function copy_uploaded_file($from, $to){
387    if(!is_uploaded_file($from)) return false;
388    $ok = copy($from, $to);
389    @unlink($from);
390    return $ok;
391}
392
393/**
394 * This generates an action event and delegates to _media_upload_action().
395 * Action plugins are allowed to pre/postprocess the uploaded file.
396 * (The triggered event is preventable.)
397 *
398 * Event data:
399 * $data[0]     fn_tmp:    the temporary file name (read from $_FILES)
400 * $data[1]     fn:        the file name of the uploaded file
401 * $data[2]     id:        the future directory id of the uploaded file
402 * $data[3]     imime:     the mimetype of the uploaded file
403 * $data[4]     overwrite: if an existing file is going to be overwritten
404 * $data[5]     move:      name of function that performs move/copy/..
405 *
406 * @triggers MEDIA_UPLOAD_FINISH
407 *
408 * @param array  $file
409 * @param string $id   media id
410 * @param bool   $ow   overwrite?
411 * @param int    $auth permission level
412 * @param string $move name of functions that performs move/copy/..
413 * @return false|array|string
414 */
415function media_save($file, $id, $ow, $auth, $move) {
416    if($auth < AUTH_UPLOAD) {
417        return array("You don't have permissions to upload files.", -1);
418    }
419
420    if (!isset($file['mime']) || !isset($file['ext'])) {
421        list($ext, $mime) = mimetype($id);
422        if (!isset($file['mime'])) {
423            $file['mime'] = $mime;
424        }
425        if (!isset($file['ext'])) {
426            $file['ext'] = $ext;
427        }
428    }
429
430    global $lang, $conf;
431
432    // get filename
433    $id   = cleanID($id);
434    $fn   = mediaFN($id);
435
436    // get filetype regexp
437    $types = array_keys(getMimeTypes());
438    $types = array_map(
439        function ($q) {
440            return preg_quote($q, "/");
441        },
442        $types
443    );
444    $regex = join('|',$types);
445
446    // because a temp file was created already
447    if(!preg_match('/\.('.$regex.')$/i',$fn)) {
448        return array($lang['uploadwrong'],-1);
449    }
450
451    //check for overwrite
452    $overwrite = file_exists($fn);
453    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
454    if($overwrite && (!$ow || $auth < $auth_ow)) {
455        return array($lang['uploadexist'], 0);
456    }
457    // check for valid content
458    $ok = media_contentcheck($file['name'], $file['mime']);
459    if($ok == -1){
460        return array(sprintf($lang['uploadbadcontent'],'.' . $file['ext']),-1);
461    }elseif($ok == -2){
462        return array($lang['uploadspam'],-1);
463    }elseif($ok == -3){
464        return array($lang['uploadxss'],-1);
465    }
466
467    // prepare event data
468    $data = array();
469    $data[0] = $file['name'];
470    $data[1] = $fn;
471    $data[2] = $id;
472    $data[3] = $file['mime'];
473    $data[4] = $overwrite;
474    $data[5] = $move;
475
476    // trigger event
477    return Event::createAndTrigger('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
478}
479
480/**
481 * Callback adapter for media_upload_finish() triggered by MEDIA_UPLOAD_FINISH
482 *
483 * @author Michael Klier <chi@chimeric.de>
484 *
485 * @param array $data event data
486 * @return false|array|string
487 */
488function _media_upload_action($data) {
489    // fixme do further sanity tests of given data?
490    if(is_array($data) && count($data)===6) {
491        return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
492    } else {
493        return false; //callback error
494    }
495}
496
497/**
498 * Saves an uploaded media file
499 *
500 * @author Andreas Gohr <andi@splitbrain.org>
501 * @author Michael Klier <chi@chimeric.de>
502 * @author Kate Arzamastseva <pshns@ukr.net>
503 *
504 * @param string $fn_tmp
505 * @param string $fn
506 * @param string $id        media id
507 * @param string $imime     mime type
508 * @param bool   $overwrite overwrite existing?
509 * @param string $move      function name
510 * @return array|string
511 */
512function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') {
513    global $conf;
514    global $lang;
515    global $REV;
516
517    $old = @filemtime($fn);
518    if(!file_exists(mediaFN($id, $old)) && file_exists($fn)) {
519        // add old revision to the attic if missing
520        media_saveOldRevision($id);
521    }
522
523    // prepare directory
524    io_createNamespace($id, 'media');
525
526    $filesize_old = file_exists($fn) ? filesize($fn) : 0;
527
528    if($move($fn_tmp, $fn)) {
529        @clearstatcache(true,$fn);
530        $new = @filemtime($fn);
531        // Set the correct permission here.
532        // Always chmod media because they may be saved with different permissions than expected from the php umask.
533        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
534        chmod($fn, $conf['fmode']);
535        msg($lang['uploadsucc'],1);
536        media_notify($id,$fn,$imime,$old,$new);
537        // add a log entry to the media changelog
538        $filesize_new = filesize($fn);
539        $sizechange = $filesize_new - $filesize_old;
540        if($REV) {
541            addMediaLogEntry(
542                $new,
543                $id,
544                DOKU_CHANGE_TYPE_REVERT,
545                sprintf($lang['restored'], dformat($REV)),
546                $REV,
547                null,
548                $sizechange
549            );
550        } elseif($overwrite) {
551            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT, '', '', null, $sizechange);
552        } else {
553            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created'], '', null, $sizechange);
554        }
555        return $id;
556    }else{
557        return array($lang['uploadfail'],-1);
558    }
559}
560
561/**
562 * Moves the current version of media file to the media_attic
563 * directory
564 *
565 * @author Kate Arzamastseva <pshns@ukr.net>
566 *
567 * @param string $id
568 * @return int - revision date
569 */
570function media_saveOldRevision($id){
571    global $conf, $lang;
572
573    $oldf = mediaFN($id);
574    if(!file_exists($oldf)) return '';
575    $date = filemtime($oldf);
576    if (!$conf['mediarevisions']) return $date;
577
578    $medialog = new MediaChangeLog($id);
579    if (!$medialog->getRevisionInfo($date)) {
580        // there was an external edit,
581        // there is no log entry for current version of file
582        $sizechange = filesize($oldf);
583        if(!file_exists(mediaMetaFN($id, '.changes'))) {
584            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created'], '', null, $sizechange);
585        } else {
586            $oldRev = $medialog->getRevisions(-1, 1); // from changelog
587            $oldRev = (int) (empty($oldRev) ? 0 : $oldRev[0]);
588            $filesize_old = filesize(mediaFN($id, $oldRev));
589            $sizechange = $sizechange - $filesize_old;
590
591            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_EDIT, '', '', null, $sizechange);
592        }
593    }
594
595    $newf = mediaFN($id,$date);
596    io_makeFileDir($newf);
597    if(copy($oldf, $newf)) {
598        // Set the correct permission here.
599        // Always chmod media because they may be saved with different permissions than expected from the php umask.
600        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
601        chmod($newf, $conf['fmode']);
602    }
603    return $date;
604}
605
606/**
607 * This function checks if the uploaded content is really what the
608 * mimetype says it is. We also do spam checking for text types here.
609 *
610 * We need to do this stuff because we can not rely on the browser
611 * to do this check correctly. Yes, IE is broken as usual.
612 *
613 * @author Andreas Gohr <andi@splitbrain.org>
614 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
615 * @fixme  check all 26 magic IE filetypes here?
616 *
617 * @param string $file path to file
618 * @param string $mime mimetype
619 * @return int
620 */
621function media_contentcheck($file,$mime){
622    global $conf;
623    if($conf['iexssprotect']){
624        $fh = @fopen($file, 'rb');
625        if($fh){
626            $bytes = fread($fh, 256);
627            fclose($fh);
628            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
629                return -3; //XSS: possibly malicious content
630            }
631        }
632    }
633    if(substr($mime,0,6) == 'image/'){
634        $info = @getimagesize($file);
635        if($mime == 'image/gif' && $info[2] != 1){
636            return -1; // uploaded content did not match the file extension
637        }elseif($mime == 'image/jpeg' && $info[2] != 2){
638            return -1;
639        }elseif($mime == 'image/png' && $info[2] != 3){
640            return -1;
641        }
642        # fixme maybe check other images types as well
643    }elseif(substr($mime,0,5) == 'text/'){
644        global $TEXT;
645        $TEXT = io_readFile($file);
646        if(checkwordblock()){
647            return -2; //blocked by the spam blacklist
648        }
649    }
650    return 0;
651}
652
653/**
654 * Send a notify mail on uploads
655 *
656 * @author Andreas Gohr <andi@splitbrain.org>
657 *
658 * @param string   $id      media id
659 * @param string   $file    path to file
660 * @param string   $mime    mime type
661 * @param bool|int $old_rev revision timestamp or false
662 * @return bool
663 */
664function media_notify($id,$file,$mime,$old_rev=false,$current_rev=false){
665    global $conf;
666    if(empty($conf['notify'])) return false; //notify enabled?
667
668    $subscription = new MediaSubscriptionSender();
669    return $subscription->sendMediaDiff($conf['notify'], 'uploadmail', $id, $old_rev, $current_rev);
670}
671
672/**
673 * List all files in a given Media namespace
674 *
675 * @param string      $ns             namespace
676 * @param null|int    $auth           permission level
677 * @param string      $jump           id
678 * @param bool        $fullscreenview
679 * @param bool|string $sort           sorting order, false skips sorting
680 */
681function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false,$sort=false){
682    global $conf;
683    global $lang;
684    $ns = cleanID($ns);
685
686    // check auth our self if not given (needed for ajax calls)
687    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
688
689    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
690
691    if($auth < AUTH_READ){
692        // FIXME: print permission warning here instead?
693        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
694    }else{
695        if (!$fullscreenview) {
696            media_uploadform($ns, $auth);
697            media_searchform($ns);
698        }
699
700        $dir = utf8_encodeFN(str_replace(':','/',$ns));
701        $data = array();
702        search($data,$conf['mediadir'],'search_media',
703                array('showmsg'=>true,'depth'=>1),$dir,1,$sort);
704
705        if(!count($data)){
706            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
707        }else {
708            if ($fullscreenview) {
709                echo '<ul class="' . _media_get_list_type() . '">';
710            }
711            foreach($data as $item){
712                if (!$fullscreenview) {
713                    media_printfile($item,$auth,$jump);
714                } else {
715                    media_printfile_thumbs($item,$auth,$jump);
716                }
717            }
718            if ($fullscreenview) echo '</ul>'.NL;
719        }
720    }
721}
722
723/**
724 * Prints tabs for files list actions
725 *
726 * @author Kate Arzamastseva <pshns@ukr.net>
727 * @author Adrian Lang <mail@adrianlang.de>
728 *
729 * @param string $selected_tab - opened tab
730 */
731
732function media_tabs_files($selected_tab = ''){
733    global $lang;
734    $tabs = array();
735    foreach(array('files'  => 'mediaselect',
736                  'upload' => 'media_uploadtab',
737                  'search' => 'media_searchtab') as $tab => $caption) {
738        $tabs[$tab] = array('href'    => media_managerURL(['tab_files' => $tab], '&'),
739                            'caption' => $lang[$caption]);
740    }
741
742    html_tabs($tabs, $selected_tab);
743}
744
745/**
746 * Prints tabs for files details actions
747 *
748 * @author Kate Arzamastseva <pshns@ukr.net>
749 * @param string $image filename of the current image
750 * @param string $selected_tab opened tab
751 */
752function media_tabs_details($image, $selected_tab = '') {
753    global $lang, $conf;
754
755    $tabs = array();
756    $tabs['view'] = array('href'    => media_managerURL(['tab_details' => 'view'], '&'),
757                          'caption' => $lang['media_viewtab']);
758
759    list(, $mime) = mimetype($image);
760    if ($mime == 'image/jpeg' && file_exists(mediaFN($image))) {
761        $tabs['edit'] = array('href'    => media_managerURL(['tab_details' => 'edit'], '&'),
762                              'caption' => $lang['media_edittab']);
763    }
764    if ($conf['mediarevisions']) {
765        $tabs['history'] = array('href'    => media_managerURL(['tab_details' => 'history'], '&'),
766                                 'caption' => $lang['media_historytab']);
767    }
768
769    html_tabs($tabs, $selected_tab);
770}
771
772/**
773 * Prints options for the tab that displays a list of all files
774 *
775 * @author Kate Arzamastseva <pshns@ukr.net>
776 */
777function media_tab_files_options() {
778    global $lang;
779    global $INPUT;
780    global $ID;
781
782    $form = new Form([
783            'method' => 'get',
784            'action' => wl($ID),
785            'class' => 'options'
786    ]);
787    $form->addTagOpen('div')->addClass('no');
788    $form->setHiddenField('sectok', null);
789    $media_manager_params = media_managerURL([], '', false, true);
790    foreach ($media_manager_params as $pKey => $pVal) {
791        $form->setHiddenField($pKey, $pVal);
792    }
793    if ($INPUT->has('q')) {
794        $form->setHiddenField('q', $INPUT->str('q'));
795    }
796    $form->addHTML('<ul>'.NL);
797    foreach (array('list' => array('listType', array('thumbs', 'rows')),
798                  'sort' => array('sortBy', array('name', 'date')))
799            as $group => $content) {
800        $checked = "_media_get_${group}_type";
801        $checked = $checked();
802
803        $form->addHTML('<li class="'. $content[0] .'">');
804        foreach ($content[1] as $option) {
805            $attrs = array();
806            if ($checked == $option) {
807                $attrs['checked'] = 'checked';
808            }
809            $radio = $form->addRadioButton(
810                $group.'_dwmedia',
811                $lang['media_'.$group.'_'.$option]
812            )->val($option)->id($content[0].'__'.$option)->addClass($option);
813            $radio->attrs($attrs);
814        }
815        $form->addHTML('</li>'.NL);
816    }
817    $form->addHTML('<li>');
818    $form->addButton('', $lang['btn_apply'])->attr('type', 'submit');
819    $form->addHTML('</li>'.NL);
820    $form->addHTML('</ul>'.NL);
821    $form->addTagClose('div');
822    print $form->toHTML();
823}
824
825/**
826 * Returns type of sorting for the list of files in media manager
827 *
828 * @author Kate Arzamastseva <pshns@ukr.net>
829 *
830 * @return string - sort type
831 */
832function _media_get_sort_type() {
833    return _media_get_display_param('sort', array('default' => 'name', 'date'));
834}
835
836/**
837 * Returns type of listing for the list of files in media manager
838 *
839 * @author Kate Arzamastseva <pshns@ukr.net>
840 *
841 * @return string - list type
842 */
843function _media_get_list_type() {
844    return _media_get_display_param('list', array('default' => 'thumbs', 'rows'));
845}
846
847/**
848 * Get display parameters
849 *
850 * @param string $param   name of parameter
851 * @param array  $values  allowed values, where default value has index key 'default'
852 * @return string the parameter value
853 */
854function _media_get_display_param($param, $values) {
855    global $INPUT;
856    if (in_array($INPUT->str($param), $values)) {
857        // FIXME: Set cookie
858        return $INPUT->str($param);
859    } else {
860        $val = get_doku_pref($param, $values['default']);
861        if (!in_array($val, $values)) {
862            $val = $values['default'];
863        }
864        return $val;
865    }
866}
867
868/**
869 * Prints tab that displays a list of all files
870 *
871 * @author Kate Arzamastseva <pshns@ukr.net>
872 *
873 * @param string    $ns
874 * @param null|int  $auth permission level
875 * @param string    $jump item id
876 */
877function media_tab_files($ns,$auth=null,$jump='') {
878    global $lang;
879    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
880
881    if($auth < AUTH_READ){
882        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
883    }else{
884        media_filelist($ns,$auth,$jump,true,_media_get_sort_type());
885    }
886}
887
888/**
889 * Prints tab that displays uploading form
890 *
891 * @author Kate Arzamastseva <pshns@ukr.net>
892 *
893 * @param string   $ns
894 * @param null|int $auth permission level
895 * @param string   $jump item id
896 */
897function media_tab_upload($ns,$auth=null,$jump='') {
898    global $lang;
899    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
900
901    echo '<div class="upload">'.NL;
902    if ($auth >= AUTH_UPLOAD) {
903        echo '<p>' . $lang['mediaupload'] . '</p>';
904    }
905    media_uploadform($ns, $auth, true);
906    echo '</div>'.NL;
907}
908
909/**
910 * Prints tab that displays search form
911 *
912 * @author Kate Arzamastseva <pshns@ukr.net>
913 *
914 * @param string $ns
915 * @param null|int $auth permission level
916 */
917function media_tab_search($ns,$auth=null) {
918    global $INPUT;
919
920    $do = $INPUT->str('mediado');
921    $query = $INPUT->str('q');
922    echo '<div class="search">'.NL;
923
924    media_searchform($ns, $query, true);
925    if ($do == 'searchlist' || $query) {
926        media_searchlist($query,$ns,$auth,true,_media_get_sort_type());
927    }
928    echo '</div>'.NL;
929}
930
931/**
932 * Prints tab that displays mediafile details
933 *
934 * @author Kate Arzamastseva <pshns@ukr.net>
935 *
936 * @param string     $image media id
937 * @param string     $ns
938 * @param null|int   $auth  permission level
939 * @param string|int $rev   revision timestamp or empty string
940 */
941function media_tab_view($image, $ns, $auth=null, $rev='') {
942    global $lang;
943    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
944
945    if ($image && $auth >= AUTH_READ) {
946        $meta = new JpegMeta(mediaFN($image, $rev));
947        media_preview($image, $auth, $rev, $meta);
948        media_preview_buttons($image, $auth, $rev);
949        media_details($image, $auth, $rev, $meta);
950
951    } else {
952        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
953    }
954}
955
956/**
957 * Prints tab that displays form for editing mediafile metadata
958 *
959 * @author Kate Arzamastseva <pshns@ukr.net>
960 *
961 * @param string     $image media id
962 * @param string     $ns
963 * @param null|int   $auth permission level
964 */
965function media_tab_edit($image, $ns, $auth=null) {
966    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
967
968    if ($image) {
969        list(, $mime) = mimetype($image);
970        if ($mime == 'image/jpeg') media_metaform($image,$auth);
971    }
972}
973
974/**
975 * Prints tab that displays mediafile revisions
976 *
977 * @author Kate Arzamastseva <pshns@ukr.net>
978 *
979 * @param string     $image media id
980 * @param string     $ns
981 * @param null|int   $auth permission level
982 */
983function media_tab_history($image, $ns, $auth=null) {
984    global $lang;
985    global $INPUT;
986
987    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
988    $do = $INPUT->str('mediado');
989
990    if ($auth >= AUTH_READ && $image) {
991        if ($do == 'diff'){
992            media_diff($image, $ns, $auth);
993        } else {
994            $first = $INPUT->int('first');
995            html_revisions($first, $image);
996        }
997    } else {
998        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
999    }
1000}
1001
1002/**
1003 * Prints mediafile details
1004 *
1005 * @param string         $image media id
1006 * @param int            $auth permission level
1007 * @param int|string     $rev revision timestamp or empty string
1008 * @param JpegMeta|bool  $meta
1009 *
1010 * @author Kate Arzamastseva <pshns@ukr.net>
1011 */
1012function media_preview($image, $auth, $rev='', $meta=false) {
1013
1014    $size = media_image_preview_size($image, $rev, $meta);
1015
1016    if ($size) {
1017        global $lang;
1018        echo '<div class="image">';
1019
1020        $more = array();
1021        if ($rev) {
1022            $more['rev'] = $rev;
1023        } else {
1024            $t = @filemtime(mediaFN($image));
1025            $more['t'] = $t;
1026        }
1027
1028        $more['w'] = $size[0];
1029        $more['h'] = $size[1];
1030        $src = ml($image, $more);
1031
1032        echo '<a href="'.$src.'" target="_blank" title="'.$lang['mediaview'].'">';
1033        echo '<img src="'.$src.'" alt="" style="max-width: '.$size[0].'px;" />';
1034        echo '</a>';
1035
1036        echo '</div>'.NL;
1037    }
1038}
1039
1040/**
1041 * Prints mediafile action buttons
1042 *
1043 * @author Kate Arzamastseva <pshns@ukr.net>
1044 *
1045 * @param string     $image media id
1046 * @param int        $auth  permission level
1047 * @param string|int $rev   revision timestamp, or empty string
1048 */
1049function media_preview_buttons($image, $auth, $rev = '') {
1050    global $lang, $conf;
1051
1052    echo '<ul class="actions">'.DOKU_LF;
1053
1054    if ($auth >= AUTH_DELETE && !$rev && file_exists(mediaFN($image))) {
1055
1056        // delete button
1057        $form = new Form([
1058            'id' => 'mediamanager__btn_delete',
1059            'action' => media_managerURL(['delete' => $image], '&'),
1060        ]);
1061        $form->addTagOpen('div')->addClass('no');
1062        $form->addButton('', $lang['btn_delete'])->attr('type', 'submit');
1063        $form->addTagClose('div');
1064        echo '<li>';
1065        echo $form->toHTML();
1066        echo '</li>'.DOKU_LF;
1067    }
1068
1069    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
1070    if ($auth >= $auth_ow && !$rev) {
1071
1072        // upload new version button
1073        $form = new Form([
1074            'id' => 'mediamanager__btn_update',
1075            'action' => media_managerURL(['image' => $image, 'mediado' => 'update'], '&'),
1076        ]);
1077        $form->addTagOpen('div')->addClass('no');
1078        $form->addButton('', $lang['media_update'])->attr('type', 'submit');
1079        $form->addTagClose('div');
1080        echo '<li>';
1081        echo $form->toHTML();
1082        echo '</li>'.DOKU_LF;
1083    }
1084
1085    if ($auth >= AUTH_UPLOAD && $rev && $conf['mediarevisions'] && file_exists(mediaFN($image, $rev))) {
1086
1087        // restore button
1088        $form = new Form([
1089            'id' => 'mediamanager__btn_restore',
1090            'action'=>media_managerURL(['image' => $image], '&'),
1091        ]);
1092        $form->addTagOpen('div')->addClass('no');
1093        $form->setHiddenField('mediado', 'restore');
1094        $form->setHiddenField('rev', $rev);
1095        $form->addButton('', $lang['media_restore'])->attr('type', 'submit');
1096        $form->addTagClose('div');
1097        echo '<li>';
1098        echo $form->toHTML();
1099        echo '</li>'.DOKU_LF;
1100    }
1101
1102    echo '</ul>'.DOKU_LF;
1103}
1104
1105/**
1106 * Returns image width and height for mediamanager preview panel
1107 *
1108 * @author Kate Arzamastseva <pshns@ukr.net>
1109 * @param string         $image
1110 * @param int|string     $rev
1111 * @param JpegMeta|bool  $meta
1112 * @param int            $size
1113 * @return array|false
1114 */
1115function media_image_preview_size($image, $rev, $meta, $size = 500) {
1116    if (!preg_match("/\.(jpe?g|gif|png)$/", $image) || !file_exists(mediaFN($image, $rev))) return false;
1117
1118    $info = getimagesize(mediaFN($image, $rev));
1119    $w = (int) $info[0];
1120    $h = (int) $info[1];
1121
1122    if($meta && ($w > $size || $h > $size)){
1123        $ratio = $meta->getResizeRatio($size, $size);
1124        $w = floor($w * $ratio);
1125        $h = floor($h * $ratio);
1126    }
1127    return array($w, $h);
1128}
1129
1130/**
1131 * Returns the requested EXIF/IPTC tag from the image meta
1132 *
1133 * @author Kate Arzamastseva <pshns@ukr.net>
1134 *
1135 * @param array    $tags array with tags, first existing is returned
1136 * @param JpegMeta $meta
1137 * @param string   $alt  alternative value
1138 * @return string
1139 */
1140function media_getTag($tags,$meta,$alt=''){
1141    if($meta === false) return $alt;
1142    $info = $meta->getField($tags);
1143    if($info == false) return $alt;
1144    return $info;
1145}
1146
1147/**
1148 * Returns mediafile tags
1149 *
1150 * @author Kate Arzamastseva <pshns@ukr.net>
1151 *
1152 * @param JpegMeta $meta
1153 * @return array list of tags of the mediafile
1154 */
1155function media_file_tags($meta) {
1156    // load the field descriptions
1157    static $fields = null;
1158    if(is_null($fields)){
1159        $config_files = getConfigFiles('mediameta');
1160        foreach ($config_files as $config_file) {
1161            if(file_exists($config_file)) include($config_file);
1162        }
1163    }
1164
1165    $tags = array();
1166
1167    foreach($fields as $key => $tag){
1168        $t = array();
1169        if (!empty($tag[0])) $t = array($tag[0]);
1170        if(isset($tag[3]) && is_array($tag[3])) $t = array_merge($t,$tag[3]);
1171        $value = media_getTag($t, $meta);
1172        $tags[] = array('tag' => $tag, 'value' => $value);
1173    }
1174
1175    return $tags;
1176}
1177
1178/**
1179 * Prints mediafile tags
1180 *
1181 * @author Kate Arzamastseva <pshns@ukr.net>
1182 *
1183 * @param string        $image image id
1184 * @param int           $auth  permission level
1185 * @param string|int    $rev   revision timestamp, or empty string
1186 * @param bool|JpegMeta $meta  image object, or create one if false
1187 */
1188function media_details($image, $auth, $rev='', $meta=false) {
1189    global $lang;
1190
1191    if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev));
1192    $tags = media_file_tags($meta);
1193
1194    echo '<dl>'.NL;
1195    foreach($tags as $tag){
1196        if ($tag['value']) {
1197            $value = cleanText($tag['value']);
1198            echo '<dt>'.$lang[$tag['tag'][1]].'</dt><dd>';
1199            if ($tag['tag'][2] == 'date') echo dformat($value);
1200            else echo hsc($value);
1201            echo '</dd>'.NL;
1202        }
1203    }
1204    echo '</dl>'.NL;
1205    echo '<dl>'.NL;
1206    echo '<dt>'.$lang['reference'].':</dt>';
1207    $media_usage = ft_mediause($image,true);
1208    if(count($media_usage) > 0){
1209        foreach($media_usage as $path){
1210            echo '<dd>'.html_wikilink($path).'</dd>';
1211        }
1212    }else{
1213        echo '<dd>'.$lang['nothingfound'].'</dd>';
1214    }
1215    echo '</dl>'.NL;
1216
1217}
1218
1219/**
1220 * Shows difference between two revisions of file
1221 *
1222 * @author Kate Arzamastseva <pshns@ukr.net>
1223 *
1224 * @param string $image  image id
1225 * @param string $ns
1226 * @param int $auth permission level
1227 * @param bool $fromajax
1228 * @return false|null|string
1229 */
1230function media_diff($image, $ns, $auth, $fromajax = false) {
1231    global $conf;
1232    global $INPUT;
1233
1234    if ($auth < AUTH_READ || !$image || !$conf['mediarevisions']) return '';
1235
1236    $rev1 = $INPUT->int('rev');
1237
1238    $rev2 = $INPUT->ref('rev2');
1239    if(is_array($rev2)){
1240        $rev1 = (int) $rev2[0];
1241        $rev2 = (int) $rev2[1];
1242
1243        if(!$rev1){
1244            $rev1 = $rev2;
1245            unset($rev2);
1246        }
1247    }else{
1248        $rev2 = $INPUT->int('rev2');
1249    }
1250
1251    if ($rev1 && !file_exists(mediaFN($image, $rev1))) $rev1 = false;
1252    if ($rev2 && !file_exists(mediaFN($image, $rev2))) $rev2 = false;
1253
1254    if($rev1 && $rev2){            // two specific revisions wanted
1255        // make sure order is correct (older on the left)
1256        if($rev1 < $rev2){
1257            $l_rev = $rev1;
1258            $r_rev = $rev2;
1259        }else{
1260            $l_rev = $rev2;
1261            $r_rev = $rev1;
1262        }
1263    }elseif($rev1){                // single revision given, compare to current
1264        $r_rev = '';
1265        $l_rev = $rev1;
1266    }else{                        // no revision was given, compare previous to current
1267        $r_rev = '';
1268        $medialog = new MediaChangeLog($image);
1269        $revs = $medialog->getRevisions(0, 1);
1270        if (file_exists(mediaFN($image, $revs[0]))) {
1271            $l_rev = $revs[0];
1272        } else {
1273            $l_rev = '';
1274        }
1275    }
1276
1277    // prepare event data
1278    $data = array();
1279    $data[0] = $image;
1280    $data[1] = $l_rev;
1281    $data[2] = $r_rev;
1282    $data[3] = $ns;
1283    $data[4] = $auth;
1284    $data[5] = $fromajax;
1285
1286    // trigger event
1287    return Event::createAndTrigger('MEDIA_DIFF', $data, '_media_file_diff', true);
1288}
1289
1290/**
1291 * Callback for media file diff
1292 *
1293 * @param array $data event data
1294 * @return false|null
1295 */
1296function _media_file_diff($data) {
1297    if(is_array($data) && count($data)===6) {
1298        media_file_diff($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
1299    } else {
1300        return false;
1301    }
1302}
1303
1304/**
1305 * Shows difference between two revisions of image
1306 *
1307 * @author Kate Arzamastseva <pshns@ukr.net>
1308 *
1309 * @param string $image
1310 * @param string|int $l_rev revision timestamp, or empty string
1311 * @param string|int $r_rev revision timestamp, or empty string
1312 * @param string $ns
1313 * @param int $auth permission level
1314 * @param bool $fromajax
1315 */
1316function media_file_diff($image, $l_rev, $r_rev, $ns, $auth, $fromajax) {
1317    global $lang;
1318    global $INPUT;
1319
1320    $l_meta = new JpegMeta(mediaFN($image, $l_rev));
1321    $r_meta = new JpegMeta(mediaFN($image, $r_rev));
1322
1323    $is_img = preg_match('/\.(jpe?g|gif|png)$/', $image);
1324    if ($is_img) {
1325        $l_size = media_image_preview_size($image, $l_rev, $l_meta);
1326        $r_size = media_image_preview_size($image, $r_rev, $r_meta);
1327        $is_img = ($l_size && $r_size && ($l_size[0] >= 30 || $r_size[0] >= 30));
1328
1329        $difftype = $INPUT->str('difftype');
1330
1331        if (!$fromajax) {
1332            $form = new Form([
1333                'id' => 'mediamanager__form_diffview',
1334                'action' => media_managerURL([], '&'),
1335                'method' => 'get',
1336                'class' => 'diffView',
1337            ]);
1338            $form->addTagOpen('div')->addClass('no');
1339            $form->setHiddenField('sectok', null);
1340            $form->setHiddenField('mediado', 'diff');
1341            $form->setHiddenField('rev2[0]', $l_rev);
1342            $form->setHiddenField('rev2[1]', $r_rev);
1343            echo $form->toHTML();
1344
1345            echo NL.'<div id="mediamanager__diff" >'.NL;
1346        }
1347
1348        if ($difftype == 'opacity' || $difftype == 'portions') {
1349            media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $difftype);
1350            if (!$fromajax) echo '</div>';
1351            return;
1352        }
1353    }
1354
1355    list($l_head, $r_head) = (new dokuwiki\Ui\Diff)->diffHead($l_rev, $r_rev, $image, true);
1356
1357    ?>
1358    <div class="table">
1359    <table>
1360      <tr>
1361        <th><?php echo $l_head; ?></th>
1362        <th><?php echo $r_head; ?></th>
1363      </tr>
1364    <?php
1365
1366    echo '<tr class="image">';
1367    echo '<td>';
1368    media_preview($image, $auth, $l_rev, $l_meta);
1369    echo '</td>';
1370
1371    echo '<td>';
1372    media_preview($image, $auth, $r_rev, $r_meta);
1373    echo '</td>';
1374    echo '</tr>'.NL;
1375
1376    echo '<tr class="actions">';
1377    echo '<td>';
1378    media_preview_buttons($image, $auth, $l_rev);
1379    echo '</td>';
1380
1381    echo '<td>';
1382    media_preview_buttons($image, $auth, $r_rev);
1383    echo '</td>';
1384    echo '</tr>'.NL;
1385
1386    $l_tags = media_file_tags($l_meta);
1387    $r_tags = media_file_tags($r_meta);
1388    // FIXME r_tags-only stuff
1389    foreach ($l_tags as $key => $l_tag) {
1390        if ($l_tag['value'] != $r_tags[$key]['value']) {
1391            $r_tags[$key]['highlighted'] = true;
1392            $l_tags[$key]['highlighted'] = true;
1393        } else if (!$l_tag['value'] || !$r_tags[$key]['value']) {
1394            unset($r_tags[$key]);
1395            unset($l_tags[$key]);
1396        }
1397    }
1398
1399    echo '<tr>';
1400    foreach(array($l_tags,$r_tags) as $tags){
1401        echo '<td>'.NL;
1402
1403        echo '<dl class="img_tags">';
1404        foreach($tags as $tag){
1405            $value = cleanText($tag['value']);
1406            if (!$value) $value = '-';
1407            echo '<dt>'.$lang[$tag['tag'][1]].'</dt>';
1408            echo '<dd>';
1409            if ($tag['highlighted']) {
1410                echo '<strong>';
1411            }
1412            if ($tag['tag'][2] == 'date') echo dformat($value);
1413            else echo hsc($value);
1414            if ($tag['highlighted']) {
1415                echo '</strong>';
1416            }
1417            echo '</dd>';
1418        }
1419        echo '</dl>'.NL;
1420
1421        echo '</td>';
1422    }
1423    echo '</tr>'.NL;
1424
1425    echo '</table>'.NL;
1426    echo '</div>'.NL;
1427
1428    if ($is_img && !$fromajax) echo '</div>';
1429}
1430
1431/**
1432 * Prints two images side by side
1433 * and slider
1434 *
1435 * @author Kate Arzamastseva <pshns@ukr.net>
1436 *
1437 * @param string $image   image id
1438 * @param int    $l_rev   revision timestamp, or empty string
1439 * @param int    $r_rev   revision timestamp, or empty string
1440 * @param array  $l_size  array with width and height
1441 * @param array  $r_size  array with width and height
1442 * @param string $type
1443 */
1444function media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $type) {
1445    if ($l_size != $r_size) {
1446        if ($r_size[0] > $l_size[0]) {
1447            $l_size = $r_size;
1448        }
1449    }
1450
1451    $l_more = array('rev' => $l_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1452    $r_more = array('rev' => $r_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1453
1454    $l_src = ml($image, $l_more);
1455    $r_src = ml($image, $r_more);
1456
1457    // slider
1458    echo '<div class="slider" style="max-width: '.($l_size[0]-20).'px;" ></div>'.NL;
1459
1460    // two images in divs
1461    echo '<div class="imageDiff ' . $type . '">'.NL;
1462    echo '<div class="image1" style="max-width: '.$l_size[0].'px;">';
1463    echo '<img src="'.$l_src.'" alt="" />';
1464    echo '</div>'.NL;
1465    echo '<div class="image2" style="max-width: '.$l_size[0].'px;">';
1466    echo '<img src="'.$r_src.'" alt="" />';
1467    echo '</div>'.NL;
1468    echo '</div>'.NL;
1469}
1470
1471/**
1472 * Restores an old revision of a media file
1473 *
1474 * @param string $image media id
1475 * @param int    $rev   revision timestamp or empty string
1476 * @param int    $auth
1477 * @return string - file's id
1478 *
1479 * @author Kate Arzamastseva <pshns@ukr.net>
1480 */
1481function media_restore($image, $rev, $auth){
1482    global $conf;
1483    if ($auth < AUTH_UPLOAD || !$conf['mediarevisions']) return false;
1484    $removed = (!file_exists(mediaFN($image)) && file_exists(mediaMetaFN($image, '.changes')));
1485    if (!$image || (!file_exists(mediaFN($image)) && !$removed)) return false;
1486    if (!$rev || !file_exists(mediaFN($image, $rev))) return false;
1487    list(,$imime,) = mimetype($image);
1488    $res = media_upload_finish(mediaFN($image, $rev),
1489        mediaFN($image),
1490        $image,
1491        $imime,
1492        true,
1493        'copy');
1494    if (is_array($res)) {
1495        msg($res[0], $res[1]);
1496        return false;
1497    }
1498    return $res;
1499}
1500
1501/**
1502 * List all files found by the search request
1503 *
1504 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1505 * @author Andreas Gohr <gohr@cosmocode.de>
1506 * @author Kate Arzamastseva <pshns@ukr.net>
1507 * @triggers MEDIA_SEARCH
1508 *
1509 * @param string $query
1510 * @param string $ns
1511 * @param null|int $auth
1512 * @param bool $fullscreen
1513 * @param string $sort
1514 */
1515function media_searchlist($query,$ns,$auth=null,$fullscreen=false,$sort='natural'){
1516    global $conf;
1517    global $lang;
1518
1519    $ns = cleanID($ns);
1520    $evdata = array(
1521        'ns'    => $ns,
1522        'data'  => array(),
1523        'query' => $query
1524    );
1525    if (!blank($query)) {
1526        $evt = new Event('MEDIA_SEARCH', $evdata);
1527        if ($evt->advise_before()) {
1528            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
1529            $quoted = preg_quote($evdata['query'],'/');
1530            //apply globbing
1531            $quoted = str_replace(array('\*', '\?'), array('.*', '.'), $quoted, $count);
1532
1533            //if we use globbing file name must match entirely but may be preceded by arbitrary namespace
1534            if ($count > 0) $quoted = '^([^:]*:)*'.$quoted.'$';
1535
1536            $pattern = '/'.$quoted.'/i';
1537            search($evdata['data'],
1538                    $conf['mediadir'],
1539                    'search_media',
1540                    array('showmsg'=>false,'pattern'=>$pattern),
1541                    $dir,
1542                    1,
1543                    $sort);
1544        }
1545        $evt->advise_after();
1546        unset($evt);
1547    }
1548
1549    if (!$fullscreen) {
1550        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
1551        media_searchform($ns,$query);
1552    }
1553
1554    if(!count($evdata['data'])){
1555        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
1556    }else {
1557        if ($fullscreen) {
1558            echo '<ul class="' . _media_get_list_type() . '">';
1559        }
1560        foreach($evdata['data'] as $item){
1561            if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
1562            else media_printfile_thumbs($item,$item['perm'],false,true);
1563        }
1564        if ($fullscreen) echo '</ul>'.NL;
1565    }
1566}
1567
1568/**
1569 * Formats and prints one file in the list
1570 *
1571 * @param array     $item
1572 * @param int       $auth              permission level
1573 * @param string    $jump              item id
1574 * @param bool      $display_namespace
1575 */
1576function media_printfile($item,$auth,$jump,$display_namespace=false){
1577    global $lang;
1578
1579    // Prepare zebra coloring
1580    // I always wanted to use this variable name :-D
1581    static $twibble = 1;
1582    $twibble *= -1;
1583    $zebra = ($twibble == -1) ? 'odd' : 'even';
1584
1585    // Automatically jump to recent action
1586    if($jump == $item['id']) {
1587        $jump = ' id="scroll__here" ';
1588    }else{
1589        $jump = '';
1590    }
1591
1592    // Prepare fileicons
1593    list($ext) = mimetype($item['file'],false);
1594    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
1595    $class = 'select mediafile mf_'.$class;
1596
1597    // Prepare filename
1598    $file = utf8_decodeFN($item['file']);
1599
1600    // Prepare info
1601    $info = '';
1602    if($item['isimg']){
1603        $info .= (int) $item['meta']->getField('File.Width');
1604        $info .= '&#215;';
1605        $info .= (int) $item['meta']->getField('File.Height');
1606        $info .= ' ';
1607    }
1608    $info .= '<i>'.dformat($item['mtime']).'</i>';
1609    $info .= ' ';
1610    $info .= filesize_h($item['size']);
1611
1612    // output
1613    echo '<div class="'.$zebra.'"'.$jump.' title="'.hsc($item['id']).'">'.NL;
1614    if (!$display_namespace) {
1615        echo '<a id="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
1616    } else {
1617        echo '<a id="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
1618    }
1619    echo '<span class="info">('.$info.')</span>'.NL;
1620
1621    // view button
1622    $link = ml($item['id'],'',true);
1623    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
1624        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
1625
1626    // mediamanager button
1627    $link = wl('',array('do'=>'media','image'=>$item['id'],'ns'=>getNS($item['id'])));
1628    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/mediamanager.png" '.
1629        'alt="'.$lang['btn_media'].'" title="'.$lang['btn_media'].'" class="btn" /></a>';
1630
1631    // delete button
1632    if($item['writable'] && $auth >= AUTH_DELETE){
1633        $link = DOKU_BASE.'lib/exe/mediamanager.php?delete='.rawurlencode($item['id']).
1634            '&amp;sectok='.getSecurityToken();
1635        echo ' <a href="'.$link.'" class="btn_media_delete" title="'.$item['id'].'">'.
1636            '<img src="'.DOKU_BASE.'lib/images/trash.png" alt="'.$lang['btn_delete'].'" '.
1637            'title="'.$lang['btn_delete'].'" class="btn" /></a>';
1638    }
1639
1640    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
1641    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
1642    echo '</div>';
1643    if($item['isimg']) media_printimgdetail($item);
1644    echo '<div class="clearer"></div>'.NL;
1645    echo '</div>'.NL;
1646}
1647
1648/**
1649 * Display a media icon
1650 *
1651 * @param string $filename media id
1652 * @param string $size     the size subfolder, if not specified 16x16 is used
1653 * @return string html
1654 */
1655function media_printicon($filename, $size=''){
1656    list($ext) = mimetype(mediaFN($filename),false);
1657
1658    if (file_exists(DOKU_INC.'lib/images/fileicons/'.$size.'/'.$ext.'.png')) {
1659        $icon = DOKU_BASE.'lib/images/fileicons/'.$size.'/'.$ext.'.png';
1660    } else {
1661        $icon = DOKU_BASE.'lib/images/fileicons/'.$size.'/file.png';
1662    }
1663
1664    return '<img src="'.$icon.'" alt="'.$filename.'" class="icon" />';
1665}
1666
1667/**
1668 * Formats and prints one file in the list in the thumbnails view
1669 *
1670 * @author Kate Arzamastseva <pshns@ukr.net>
1671 *
1672 * @param array       $item
1673 * @param int         $auth              permission level
1674 * @param bool|string $jump              item id
1675 * @param bool        $display_namespace
1676 */
1677function media_printfile_thumbs($item,$auth,$jump=false,$display_namespace=false){
1678
1679    // Prepare filename
1680    $file = utf8_decodeFN($item['file']);
1681
1682    // output
1683    echo '<li><dl title="'.hsc($item['id']).'">'.NL;
1684
1685        echo '<dt>';
1686    if($item['isimg']) {
1687        media_printimgdetail($item, true);
1688
1689    } else {
1690        echo '<a id="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1691            media_managerURL(['image' => hsc($item['id']), 'ns' => getNS($item['id']),
1692            'tab_details' => 'view']).'">';
1693        echo media_printicon($item['id'], '32x32');
1694        echo '</a>';
1695    }
1696    echo '</dt>'.NL;
1697    if (!$display_namespace) {
1698        $name = hsc($file);
1699    } else {
1700        $name = hsc($item['id']);
1701    }
1702    echo '<dd class="name"><a href="'.media_managerURL(['image' => hsc($item['id']), 'ns' => getNS($item['id']),
1703        'tab_details' => 'view']).'" id="h_:'.$item['id'].'">'.$name.'</a></dd>'.NL;
1704
1705    if($item['isimg']){
1706        $size = '';
1707        $size .= (int) $item['meta']->getField('File.Width');
1708        $size .= '&#215;';
1709        $size .= (int) $item['meta']->getField('File.Height');
1710        echo '<dd class="size">'.$size.'</dd>'.NL;
1711    } else {
1712        echo '<dd class="size">&#160;</dd>'.NL;
1713    }
1714    $date = dformat($item['mtime']);
1715    echo '<dd class="date">'.$date.'</dd>'.NL;
1716    $filesize = filesize_h($item['size']);
1717    echo '<dd class="filesize">'.$filesize.'</dd>'.NL;
1718    echo '</dl></li>'.NL;
1719}
1720
1721/**
1722 * Prints a thumbnail and metainfo
1723 *
1724 * @param array $item
1725 * @param bool  $fullscreen
1726 */
1727function media_printimgdetail($item, $fullscreen=false){
1728    // prepare thumbnail
1729    $size = $fullscreen ? 90 : 120;
1730
1731    $w = (int) $item['meta']->getField('File.Width');
1732    $h = (int) $item['meta']->getField('File.Height');
1733    if($w>$size || $h>$size){
1734        if (!$fullscreen) {
1735            $ratio = $item['meta']->getResizeRatio($size);
1736        } else {
1737            $ratio = $item['meta']->getResizeRatio($size,$size);
1738        }
1739        $w = floor($w * $ratio);
1740        $h = floor($h * $ratio);
1741    }
1742    $src = ml($item['id'],array('w'=>$w,'h'=>$h,'t'=>$item['mtime']));
1743    $p = array();
1744    if (!$fullscreen) {
1745        // In fullscreen mediamanager view, image resizing is done via CSS.
1746        $p['width']  = $w;
1747        $p['height'] = $h;
1748    }
1749    $p['alt']    = $item['id'];
1750    $att = buildAttributes($p);
1751
1752    // output
1753    if ($fullscreen) {
1754        echo '<a id="l_:'.$item['id'].'" class="image thumb" href="'.
1755            media_managerURL(['image' => hsc($item['id']), 'ns' => getNS($item['id']), 'tab_details' => 'view']).'">';
1756        echo '<img src="'.$src.'" '.$att.' />';
1757        echo '</a>';
1758    }
1759
1760    if ($fullscreen) return;
1761
1762    echo '<div class="detail">';
1763    echo '<div class="thumb">';
1764    echo '<a id="d_:'.$item['id'].'" class="select">';
1765    echo '<img src="'.$src.'" '.$att.' />';
1766    echo '</a>';
1767    echo '</div>';
1768
1769    // read EXIF/IPTC data
1770    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
1771    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
1772                'EXIF.TIFFImageDescription',
1773                'EXIF.TIFFUserComment'));
1774    if(\dokuwiki\Utf8\PhpString::strlen($d) > 250) $d = \dokuwiki\Utf8\PhpString::substr($d,0,250).'...';
1775    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
1776
1777    // print EXIF/IPTC data
1778    if($t || $d || $k ){
1779        echo '<p>';
1780        if($t) echo '<strong>'.hsc($t).'</strong><br />';
1781        if($d) echo hsc($d).'<br />';
1782        if($t) echo '<em>'.hsc($k).'</em>';
1783        echo '</p>';
1784    }
1785    echo '</div>';
1786}
1787
1788/**
1789 * Build link based on the current, adding/rewriting parameters
1790 *
1791 * @author Kate Arzamastseva <pshns@ukr.net>
1792 *
1793 * @param array|bool $params
1794 * @param string     $amp           separator
1795 * @param bool       $abs           absolute url?
1796 * @param bool       $params_array  return the parmeters array?
1797 * @return string|array - link or link parameters
1798 */
1799function media_managerURL($params = false, $amp = '&amp;', $abs = false, $params_array = false) {
1800    global $ID;
1801    global $INPUT;
1802
1803    $gets = array('do' => 'media');
1804    $media_manager_params = array('tab_files', 'tab_details', 'image', 'ns', 'list', 'sort');
1805    foreach ($media_manager_params as $x) {
1806        if ($INPUT->has($x)) $gets[$x] = $INPUT->str($x);
1807    }
1808
1809    if ($params) {
1810        $gets = $params + $gets;
1811    }
1812    unset($gets['id']);
1813    if (isset($gets['delete'])) {
1814        unset($gets['image']);
1815        unset($gets['tab_details']);
1816    }
1817
1818    if ($params_array) return $gets;
1819
1820    return wl($ID,$gets,$abs,$amp);
1821}
1822
1823/**
1824 * Print the media upload form if permissions are correct
1825 *
1826 * @author Andreas Gohr <andi@splitbrain.org>
1827 * @author Kate Arzamastseva <pshns@ukr.net>
1828 *
1829 * @param string $ns
1830 * @param int    $auth permission level
1831 * @param bool  $fullscreen
1832 */
1833function media_uploadform($ns, $auth, $fullscreen = false) {
1834    global $lang;
1835    global $conf;
1836    global $INPUT;
1837
1838    if ($auth < AUTH_UPLOAD) {
1839        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
1840        return;
1841    }
1842    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
1843
1844    $update = false;
1845    $id = '';
1846    if ($auth >= $auth_ow && $fullscreen && $INPUT->str('mediado') == 'update') {
1847        $update = true;
1848        $id = cleanID($INPUT->str('image'));
1849    }
1850
1851    // The default HTML upload form
1852    $form = new Form([
1853        'id' => 'dw__upload',
1854        'enctype' => 'multipart/form-data',
1855        'action' => ($fullscreen)
1856                    ? media_managerURL(['tab_files' => 'files', 'tab_details' => 'view'], '&')
1857                    : DOKU_BASE.'lib/exe/mediamanager.php',
1858    ]);
1859    $form->addTagOpen('div')->addClass('no');
1860    $form->setHiddenField('ns', hsc($ns));  // FIXME hsc required?
1861    $form->addTagOpen('p');
1862    $form->addTextInput('upload', $lang['txt_upload'])->id('upload__file')
1863            ->attrs(['type' => 'file']);
1864    $form->addTagClose('p');
1865    $form->addTagOpen('p');
1866    $form->addTextInput('mediaid', $lang['txt_filename'])->id('upload__name')
1867            ->val(noNS($id));
1868    $form->addButton('', $lang['btn_upload'])->attr('type', 'submit');
1869    $form->addTagClose('p');
1870    if ($auth >= $auth_ow){
1871        $form->addTagOpen('p');
1872        $attrs = array();
1873        if ($update) $attrs['checked'] = 'checked';
1874        $form->addCheckbox('ow', $lang['txt_overwrt'])->id('dw__ow')->val('1')
1875            ->addClass('check')->attrs($attrs);
1876        $form->addTagClose('p');
1877    }
1878    $form->addTagClose('div');
1879
1880    if (!$fullscreen) {
1881        echo '<div class="upload">'. $lang['mediaupload'] .'</div>'.DOKU_LF;
1882    } else {
1883        echo DOKU_LF;
1884    }
1885
1886    echo '<div id="mediamanager__uploader">'.DOKU_LF;
1887    echo $form->toHTML('Upload');
1888    echo '</div>'.DOKU_LF;
1889
1890    echo '<p class="maxsize">';
1891    printf($lang['maxuploadsize'], filesize_h(media_getuploadsize()));
1892    echo ' <a class="allowedmime" href="#">'. $lang['allowedmime'] .'</a>';
1893    echo ' <span>'. implode(', ', array_keys(getMimeTypes())) .'</span>';
1894    echo '</p>'.DOKU_LF;
1895}
1896
1897/**
1898 * Returns the size uploaded files may have
1899 *
1900 * This uses a conservative approach using the lowest number found
1901 * in any of the limiting ini settings
1902 *
1903 * @returns int size in bytes
1904 */
1905function media_getuploadsize(){
1906    $okay = 0;
1907
1908    $post = (int) php_to_byte(@ini_get('post_max_size'));
1909    $suho = (int) php_to_byte(@ini_get('suhosin.post.max_value_length'));
1910    $upld = (int) php_to_byte(@ini_get('upload_max_filesize'));
1911
1912    if($post && ($post < $okay || $okay == 0)) $okay = $post;
1913    if($suho && ($suho < $okay || $okay == 0)) $okay = $suho;
1914    if($upld && ($upld < $okay || $okay == 0)) $okay = $upld;
1915
1916    return $okay;
1917}
1918
1919/**
1920 * Print the search field form
1921 *
1922 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1923 * @author Kate Arzamastseva <pshns@ukr.net>
1924 *
1925 * @param string $ns
1926 * @param string $query
1927 * @param bool $fullscreen
1928 */
1929function media_searchform($ns, $query = '', $fullscreen = false) {
1930    global $lang;
1931
1932    // The default HTML search form
1933    $form = new Form([
1934        'id'     => 'dw__mediasearch',
1935        'action' => ($fullscreen)
1936                    ? media_managerURL([], '&')
1937                    : DOKU_BASE.'lib/exe/mediamanager.php',
1938    ]);
1939    $form->addTagOpen('div')->addClass('no');
1940    $form->setHiddenField('ns', $ns);
1941    $form->setHiddenField($fullscreen ? 'mediado' : 'do', 'searchlist');
1942
1943    $form->addTagOpen('p');
1944    $form->addTextInput('q', $lang['searchmedia'])
1945            ->attr('title', sprintf($lang['searchmedia_in'], hsc($ns) .':*'))
1946            ->val($query);
1947    $form->addHTML(' ');
1948    $form->addButton('', $lang['btn_search'])->attr('type', 'submit');
1949    $form->addTagClose('p');
1950    $form->addTagClose('div');
1951    print $form->toHTML('SearchMedia');
1952}
1953
1954/**
1955 * Build a tree outline of available media namespaces
1956 *
1957 * @author Andreas Gohr <andi@splitbrain.org>
1958 *
1959 * @param string $ns
1960 */
1961function media_nstree($ns){
1962    global $conf;
1963    global $lang;
1964
1965    // currently selected namespace
1966    $ns  = cleanID($ns);
1967    if(empty($ns)){
1968        global $ID;
1969        $ns = (string)getNS($ID);
1970    }
1971
1972    $ns_dir  = utf8_encodeFN(str_replace(':','/',$ns));
1973
1974    $data = array();
1975    search($data,$conf['mediadir'],'search_index',array('ns' => $ns_dir, 'nofiles' => true));
1976
1977    // wrap a list with the root level around the other namespaces
1978    array_unshift($data, array('level' => 0, 'id' => '', 'open' =>'true',
1979                               'label' => '['.$lang['mediaroot'].']'));
1980
1981    // insert the current ns into the hierarchy if it isn't already part of it
1982    $ns_parts = explode(':', $ns);
1983    $tmp_ns = '';
1984    $pos = 0;
1985    foreach ($ns_parts as $level => $part) {
1986        if ($tmp_ns) $tmp_ns .= ':'.$part;
1987        else $tmp_ns = $part;
1988
1989        // find the namespace parts or insert them
1990        while ($data[$pos]['id'] != $tmp_ns) {
1991            if (
1992                $pos >= count($data) ||
1993                ($data[$pos]['level'] <= $level+1 && Sort::strcmp($data[$pos]['id'], $tmp_ns) > 0)
1994            ) {
1995                array_splice($data, $pos, 0, array(array('level' => $level+1, 'id' => $tmp_ns, 'open' => 'true')));
1996                break;
1997            }
1998            ++$pos;
1999        }
2000    }
2001
2002    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
2003}
2004
2005/**
2006 * Userfunction for html_buildlist
2007 *
2008 * Prints a media namespace tree item
2009 *
2010 * @author Andreas Gohr <andi@splitbrain.org>
2011 *
2012 * @param array $item
2013 * @return string html
2014 */
2015function media_nstree_item($item){
2016    global $INPUT;
2017    $pos   = strrpos($item['id'], ':');
2018    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
2019    if(empty($item['label'])) $item['label'] = $label;
2020
2021    $ret  = '';
2022    if (!($INPUT->str('do') == 'media'))
2023    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
2024    else $ret .= '<a href="'.media_managerURL(['ns' => idfilter($item['id'], false), 'tab_files' => 'files'])
2025        .'" class="idx_dir">';
2026    $ret .= $item['label'];
2027    $ret .= '</a>';
2028    return $ret;
2029}
2030
2031/**
2032 * Userfunction for html_buildlist
2033 *
2034 * Prints a media namespace tree item opener
2035 *
2036 * @author Andreas Gohr <andi@splitbrain.org>
2037 *
2038 * @param array $item
2039 * @return string html
2040 */
2041function media_nstree_li($item){
2042    $class='media level'.$item['level'];
2043    if($item['open']){
2044        $class .= ' open';
2045        $img   = DOKU_BASE.'lib/images/minus.gif';
2046        $alt   = '−';
2047    }else{
2048        $class .= ' closed';
2049        $img   = DOKU_BASE.'lib/images/plus.gif';
2050        $alt   = '+';
2051    }
2052    // TODO: only deliver an image if it actually has a subtree...
2053    return '<li class="'.$class.'">'.
2054        '<img src="'.$img.'" alt="'.$alt.'" />';
2055}
2056
2057/**
2058 * Resizes the given image to the given size
2059 *
2060 * @author  Andreas Gohr <andi@splitbrain.org>
2061 *
2062 * @param string $file filename, path to file
2063 * @param string $ext  extension
2064 * @param int    $w    desired width
2065 * @param int    $h    desired height
2066 * @return string path to resized or original size if failed
2067 */
2068function media_resize_image($file, $ext, $w, $h=0){
2069    global $conf;
2070    if(!$h) $h = $w;
2071    // we wont scale up to infinity
2072    if($w > 2000 || $h > 2000) return $file;
2073
2074    //cache
2075    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
2076    $mtime = (int) @filemtime($local); // 0 if not exists
2077
2078    $options = [
2079        'quality' => $conf['jpg_quality'],
2080        'imconvert' => $conf['im_convert'],
2081    ];
2082
2083    if( $mtime <= (int) @filemtime($file) ) {
2084        try {
2085            \splitbrain\slika\Slika::run($file, $options)
2086                                   ->autorotate()
2087                                   ->resize($w, $h)
2088                                   ->save($local, $ext);
2089            if($conf['fperm']) @chmod($local, $conf['fperm']);
2090        } catch (\splitbrain\slika\Exception $e) {
2091            dbglog($e->getMessage());
2092            return $file;
2093        }
2094    }
2095
2096    return $local;
2097}
2098
2099/**
2100 * Center crops the given image to the wanted size
2101 *
2102 * @author  Andreas Gohr <andi@splitbrain.org>
2103 *
2104 * @param string $file filename, path to file
2105 * @param string $ext  extension
2106 * @param int    $w    desired width
2107 * @param int    $h    desired height
2108 * @return string path to resized or original size if failed
2109 */
2110function media_crop_image($file, $ext, $w, $h=0){
2111    global $conf;
2112    if(!$h) $h = $w;
2113    // we wont scale up to infinity
2114    if($w > 2000 || $h > 2000) return $file;
2115
2116    //cache
2117    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.crop.'.$ext);
2118    $mtime = (int) @filemtime($local); // 0 if not exists
2119
2120    $options = [
2121        'quality' => $conf['jpg_quality'],
2122        'imconvert' => $conf['im_convert'],
2123    ];
2124
2125    if( $mtime <= (int) @filemtime($file) ) {
2126        try {
2127            \splitbrain\slika\Slika::run($file, $options)
2128                                   ->autorotate()
2129                                    ->crop($w, $h)
2130                                    ->save($local, $ext);
2131            if($conf['fperm']) @chmod($local, $conf['fperm']);
2132        } catch (\splitbrain\slika\Exception $e) {
2133            dbglog($e->getMessage());
2134            return $file;
2135        }
2136    }
2137
2138    return $local;
2139}
2140
2141/**
2142 * Calculate a token to be used to verify fetch requests for resized or
2143 * cropped images have been internally generated - and prevent external
2144 * DDOS attacks via fetch
2145 *
2146 * @author Christopher Smith <chris@jalakai.co.uk>
2147 *
2148 * @param string  $id    id of the image
2149 * @param int     $w     resize/crop width
2150 * @param int     $h     resize/crop height
2151 * @return string token or empty string if no token required
2152 */
2153function media_get_token($id,$w,$h){
2154    // token is only required for modified images
2155    if ($w || $h || media_isexternal($id)) {
2156        $token = $id;
2157        if ($w) $token .= '.'.$w;
2158        if ($h) $token .= '.'.$h;
2159
2160        return substr(\dokuwiki\PassHash::hmac('md5', $token, auth_cookiesalt()),0,6);
2161    }
2162
2163    return '';
2164}
2165
2166/**
2167 * Download a remote file and return local filename
2168 *
2169 * returns false if download fails. Uses cached file if available and
2170 * wanted
2171 *
2172 * @author  Andreas Gohr <andi@splitbrain.org>
2173 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
2174 *
2175 * @param string $url
2176 * @param string $ext   extension
2177 * @param int    $cache cachetime in seconds
2178 * @return false|string path to cached file
2179 */
2180function media_get_from_URL($url,$ext,$cache){
2181    global $conf;
2182
2183    // if no cache or fetchsize just redirect
2184    if ($cache==0)           return false;
2185    if (!$conf['fetchsize']) return false;
2186
2187    $local = getCacheName(strtolower($url),".media.$ext");
2188    $mtime = @filemtime($local); // 0 if not exists
2189
2190    //decide if download needed:
2191    if(($mtime == 0) || // cache does not exist
2192        ($cache != -1 && $mtime < time() - $cache) // 'recache' and cache has expired
2193    ) {
2194        if(media_image_download($url, $local)) {
2195            return $local;
2196        } else {
2197            return false;
2198        }
2199    }
2200
2201    //if cache exists use it else
2202    if($mtime) return $local;
2203
2204    //else return false
2205    return false;
2206}
2207
2208/**
2209 * Download image files
2210 *
2211 * @author Andreas Gohr <andi@splitbrain.org>
2212 *
2213 * @param string $url
2214 * @param string $file path to file in which to put the downloaded content
2215 * @return bool
2216 */
2217function media_image_download($url,$file){
2218    global $conf;
2219    $http = new DokuHTTPClient();
2220    $http->keep_alive = false; // we do single ops here, no need for keep-alive
2221
2222    $http->max_bodysize = $conf['fetchsize'];
2223    $http->timeout = 25; //max. 25 sec
2224    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
2225
2226    $data = $http->get($url);
2227    if(!$data) return false;
2228
2229    $fileexists = file_exists($file);
2230    $fp = @fopen($file,"w");
2231    if(!$fp) return false;
2232    fwrite($fp,$data);
2233    fclose($fp);
2234    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
2235
2236    // check if it is really an image
2237    $info = @getimagesize($file);
2238    if(!$info){
2239        @unlink($file);
2240        return false;
2241    }
2242
2243    return true;
2244}
2245
2246/**
2247 * resize images using external ImageMagick convert program
2248 *
2249 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
2250 * @author Andreas Gohr <andi@splitbrain.org>
2251 *
2252 * @param string $ext     extension
2253 * @param string $from    filename path to file
2254 * @param int    $from_w  original width
2255 * @param int    $from_h  original height
2256 * @param string $to      path to resized file
2257 * @param int    $to_w    desired width
2258 * @param int    $to_h    desired height
2259 * @return bool
2260 */
2261function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
2262    global $conf;
2263
2264    // check if convert is configured
2265    if(!$conf['im_convert']) return false;
2266
2267    // prepare command
2268    $cmd  = $conf['im_convert'];
2269    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
2270    if ($ext == 'jpg' || $ext == 'jpeg') {
2271        $cmd .= ' -quality '.$conf['jpg_quality'];
2272    }
2273    $cmd .= " $from $to";
2274
2275    @exec($cmd,$out,$retval);
2276    if ($retval == 0) return true;
2277    return false;
2278}
2279
2280/**
2281 * crop images using external ImageMagick convert program
2282 *
2283 * @author Andreas Gohr <andi@splitbrain.org>
2284 *
2285 * @param string $ext     extension
2286 * @param string $from    filename path to file
2287 * @param int    $from_w  original width
2288 * @param int    $from_h  original height
2289 * @param string $to      path to resized file
2290 * @param int    $to_w    desired width
2291 * @param int    $to_h    desired height
2292 * @param int    $ofs_x   offset of crop centre
2293 * @param int    $ofs_y   offset of crop centre
2294 * @return bool
2295 * @deprecated 2020-09-01
2296 */
2297function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
2298    global $conf;
2299    dbg_deprecated('splitbrain\\Slika');
2300
2301    // check if convert is configured
2302    if(!$conf['im_convert']) return false;
2303
2304    // prepare command
2305    $cmd  = $conf['im_convert'];
2306    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
2307    if ($ext == 'jpg' || $ext == 'jpeg') {
2308        $cmd .= ' -quality '.$conf['jpg_quality'];
2309    }
2310    $cmd .= " $from $to";
2311
2312    @exec($cmd,$out,$retval);
2313    if ($retval == 0) return true;
2314    return false;
2315}
2316
2317/**
2318 * resize or crop images using PHP's libGD support
2319 *
2320 * @author Andreas Gohr <andi@splitbrain.org>
2321 * @author Sebastian Wienecke <s_wienecke@web.de>
2322 *
2323 * @param string $ext     extension
2324 * @param string $from    filename path to file
2325 * @param int    $from_w  original width
2326 * @param int    $from_h  original height
2327 * @param string $to      path to resized file
2328 * @param int    $to_w    desired width
2329 * @param int    $to_h    desired height
2330 * @param int    $ofs_x   offset of crop centre
2331 * @param int    $ofs_y   offset of crop centre
2332 * @return bool
2333 * @deprecated 2020-09-01
2334 */
2335function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
2336    global $conf;
2337    dbg_deprecated('splitbrain\\Slika');
2338
2339    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
2340
2341    // check available memory
2342    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
2343        return false;
2344    }
2345
2346    // create an image of the given filetype
2347    $image = false;
2348    if ($ext == 'jpg' || $ext == 'jpeg'){
2349        if(!function_exists("imagecreatefromjpeg")) return false;
2350        $image = @imagecreatefromjpeg($from);
2351    }elseif($ext == 'png') {
2352        if(!function_exists("imagecreatefrompng")) return false;
2353        $image = @imagecreatefrompng($from);
2354
2355    }elseif($ext == 'gif') {
2356        if(!function_exists("imagecreatefromgif")) return false;
2357        $image = @imagecreatefromgif($from);
2358    }
2359    if(!$image) return false;
2360
2361    $newimg = false;
2362    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
2363        $newimg = @imagecreatetruecolor ($to_w, $to_h);
2364    }
2365    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
2366    if(!$newimg){
2367        imagedestroy($image);
2368        return false;
2369    }
2370
2371    //keep png alpha channel if possible
2372    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
2373        imagealphablending($newimg, false);
2374        imagesavealpha($newimg,true);
2375    }
2376
2377    //keep gif transparent color if possible
2378    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
2379        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
2380            $transcolorindex = @imagecolortransparent($image);
2381            if($transcolorindex >= 0 ) { //transparent color exists
2382                $transcolor = @imagecolorsforindex($image, $transcolorindex);
2383                $transcolorindex = @imagecolorallocate(
2384                    $newimg,
2385                    $transcolor['red'],
2386                    $transcolor['green'],
2387                    $transcolor['blue']
2388                );
2389                @imagefill($newimg, 0, 0, $transcolorindex);
2390                @imagecolortransparent($newimg, $transcolorindex);
2391            }else{ //filling with white
2392                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2393                @imagefill($newimg, 0, 0, $whitecolorindex);
2394            }
2395        }else{ //filling with white
2396            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2397            @imagefill($newimg, 0, 0, $whitecolorindex);
2398        }
2399    }
2400
2401    //try resampling first
2402    if(function_exists("imagecopyresampled")){
2403        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
2404            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2405        }
2406    }else{
2407        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2408    }
2409
2410    $okay = false;
2411    if ($ext == 'jpg' || $ext == 'jpeg'){
2412        if(!function_exists('imagejpeg')){
2413            $okay = false;
2414        }else{
2415            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
2416        }
2417    }elseif($ext == 'png') {
2418        if(!function_exists('imagepng')){
2419            $okay = false;
2420        }else{
2421            $okay =  imagepng($newimg, $to);
2422        }
2423    }elseif($ext == 'gif') {
2424        if(!function_exists('imagegif')){
2425            $okay = false;
2426        }else{
2427            $okay = imagegif($newimg, $to);
2428        }
2429    }
2430
2431    // destroy GD image ressources
2432    if($image) imagedestroy($image);
2433    if($newimg) imagedestroy($newimg);
2434
2435    return $okay;
2436}
2437
2438/**
2439 * Return other media files with the same base name
2440 * but different extensions.
2441 *
2442 * @param string   $src     - ID of media file
2443 * @param string[] $exts    - alternative extensions to find other files for
2444 * @return array            - array(mime type => file ID)
2445 *
2446 * @author Anika Henke <anika@selfthinker.org>
2447 */
2448function media_alternativefiles($src, $exts){
2449
2450    $files = array();
2451    list($srcExt, /* $srcMime */) = mimetype($src);
2452    $filebase = substr($src, 0, -1 * (strlen($srcExt)+1));
2453
2454    foreach($exts as $ext) {
2455        $fileid = $filebase.'.'.$ext;
2456        $file = mediaFN($fileid);
2457        if(file_exists($file)) {
2458            list(/* $fileExt */, $fileMime) = mimetype($file);
2459            $files[$fileMime] = $fileid;
2460        }
2461    }
2462    return $files;
2463}
2464
2465/**
2466 * Check if video/audio is supported to be embedded.
2467 *
2468 * @param string $mime      - mimetype of media file
2469 * @param string $type      - type of media files to check ('video', 'audio', or null for all)
2470 * @return boolean
2471 *
2472 * @author Anika Henke <anika@selfthinker.org>
2473 */
2474function media_supportedav($mime, $type=NULL){
2475    $supportedAudio = array(
2476        'ogg' => 'audio/ogg',
2477        'mp3' => 'audio/mpeg',
2478        'wav' => 'audio/wav',
2479    );
2480    $supportedVideo = array(
2481        'webm' => 'video/webm',
2482        'ogv' => 'video/ogg',
2483        'mp4' => 'video/mp4',
2484    );
2485    if ($type == 'audio') {
2486        $supportedAv = $supportedAudio;
2487    } elseif ($type == 'video') {
2488        $supportedAv = $supportedVideo;
2489    } else {
2490        $supportedAv = array_merge($supportedAudio, $supportedVideo);
2491    }
2492    return in_array($mime, $supportedAv);
2493}
2494
2495/**
2496 * Return track media files with the same base name
2497 * but extensions that indicate kind and lang.
2498 * ie for foo.webm search foo.sub.lang.vtt, foo.cap.lang.vtt...
2499 *
2500 * @param string   $src     - ID of media file
2501 * @return array            - array(mediaID => array( kind, srclang ))
2502 *
2503 * @author Schplurtz le Déboulonné <Schplurtz@laposte.net>
2504 */
2505function media_trackfiles($src){
2506    $kinds=array(
2507        'sub' => 'subtitles',
2508        'cap' => 'captions',
2509        'des' => 'descriptions',
2510        'cha' => 'chapters',
2511        'met' => 'metadata'
2512    );
2513
2514    $files = array();
2515    $re='/\\.(sub|cap|des|cha|met)\\.([^.]+)\\.vtt$/';
2516    $baseid=pathinfo($src, PATHINFO_FILENAME);
2517    $pattern=mediaFN($baseid).'.*.*.vtt';
2518    $list=glob($pattern);
2519    foreach($list as $track) {
2520        if(preg_match($re, $track, $matches)){
2521            $files[$baseid.'.'.$matches[1].'.'.$matches[2].'.vtt']=array(
2522                $kinds[$matches[1]],
2523                $matches[2],
2524            );
2525        }
2526    }
2527    return $files;
2528}
2529
2530/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
2531