xref: /dokuwiki/inc/media.php (revision df60eba1d79b8a3e9a5dda87cb3466f0b7b9d454) 
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 * Check if a media item is public (eg, external URL or readable by @ALL)
87 *
88 * @author Andreas Gohr <andi@splitbrain.org>
89 * @param string $id  the media ID or URL
90 * @return bool
91 */
92function media_ispublic($id){
93    if(preg_match('/^https?:\/\//i',$id)) return true;
94    $id = cleanID($id);
95    if(auth_aclcheck(getNS($id).':*', '', array()) >= AUTH_READ) return true;
96    return false;
97}
98
99/**
100 * Display the form to edit image meta data
101 *
102 * @author Andreas Gohr <andi@splitbrain.org>
103 * @author Kate Arzamastseva <pshns@ukr.net>
104 */
105function media_metaform($id,$auth){
106    global $lang, $config_cascade;
107
108    if($auth < AUTH_UPLOAD) {
109        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
110        return false;
111    }
112
113    // load the field descriptions
114    static $fields = null;
115    if(is_null($fields)){
116        $config_files = getConfigFiles('mediameta');
117        foreach ($config_files as $config_file) {
118            if(@file_exists($config_file)) include($config_file);
119        }
120    }
121
122    $src = mediaFN($id);
123
124    // output
125    $form = new Doku_Form(array('action' => media_managerURL(array('tab_details' => 'view'), '&'),
126                                'class' => 'meta'));
127    $form->addHidden('img', $id);
128    $form->addHidden('mediado', 'save');
129    foreach($fields as $key => $field){
130        // get current value
131        if (empty($field[0])) continue;
132        $tags = array($field[0]);
133        if(is_array($field[3])) $tags = array_merge($tags,$field[3]);
134        $value = tpl_img_getTag($tags,'',$src);
135        $value = cleanText($value);
136
137        // prepare attributes
138        $p = array();
139        $p['class'] = 'edit';
140        $p['id']    = 'meta__'.$key;
141        $p['name']  = 'meta['.$field[0].']';
142        $p_attrs    = array('class' => 'edit');
143
144        $form->addElement('<div class="row">');
145        if($field[2] == 'text'){
146            $form->addElement(form_makeField('text', $p['name'], $value, ($lang[$field[1]]) ? $lang[$field[1]] : $field[1] . ':', $p['id'], $p['class'], $p_attrs));
147        }else{
148            $att = buildAttributes($p);
149            $form->addElement('<label for="meta__'.$key.'">'.$lang[$field[1]].'</label>');
150            $form->addElement("<textarea $att rows=\"6\" cols=\"50\">".formText($value).'</textarea>');
151        }
152        $form->addElement('</div>'.NL);
153    }
154    $form->addElement('<div class="buttons">');
155    $form->addElement(form_makeButton('submit', '', $lang['btn_save'], array('accesskey' => 's', 'name' => 'mediado[save]')));
156    $form->addElement('</div>'.NL);
157    $form->printForm();
158}
159
160/**
161 * Convenience function to check if a media file is still in use
162 *
163 * @author Michael Klier <chi@chimeric.de>
164 */
165function media_inuse($id) {
166    global $conf;
167    $mediareferences = array();
168    if($conf['refcheck']){
169        $mediareferences = ft_mediause($id,$conf['refshow']);
170        if(!count($mediareferences)) {
171            return false;
172        } else {
173            return $mediareferences;
174        }
175    } else {
176        return false;
177    }
178}
179
180define('DOKU_MEDIA_DELETED', 1);
181define('DOKU_MEDIA_NOT_AUTH', 2);
182define('DOKU_MEDIA_INUSE', 4);
183define('DOKU_MEDIA_EMPTY_NS', 8);
184
185/**
186 * Handles media file deletions
187 *
188 * If configured, checks for media references before deletion
189 *
190 * @author Andreas Gohr <andi@splitbrain.org>
191 * @return int One of: 0,
192 *                     DOKU_MEDIA_DELETED,
193 *                     DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS,
194 *                     DOKU_MEDIA_NOT_AUTH,
195 *                     DOKU_MEDIA_INUSE
196 */
197function media_delete($id,$auth){
198    global $lang;
199    if($auth < AUTH_DELETE) return DOKU_MEDIA_NOT_AUTH;
200    if(media_inuse($id)) return DOKU_MEDIA_INUSE;
201
202    $file = mediaFN($id);
203
204    // trigger an event - MEDIA_DELETE_FILE
205    $data['id']   = $id;
206    $data['name'] = utf8_basename($file);
207    $data['path'] = $file;
208    $data['size'] = (@file_exists($file)) ? filesize($file) : 0;
209
210    $data['unl'] = false;
211    $data['del'] = false;
212    $evt = new Doku_Event('MEDIA_DELETE_FILE',$data);
213    if ($evt->advise_before()) {
214        $old = @filemtime($file);
215        if(!@file_exists(mediaFN($id, $old)) && @file_exists($file)) {
216            // add old revision to the attic
217            media_saveOldRevision($id);
218        }
219
220        $data['unl'] = @unlink($file);
221        if($data['unl']){
222            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_DELETE, $lang['deleted']);
223            $data['del'] = io_sweepNS($id,'mediadir');
224        }
225    }
226    $evt->advise_after();
227    unset($evt);
228
229    if($data['unl'] && $data['del']){
230        return DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS;
231    }
232
233    return $data['unl'] ? DOKU_MEDIA_DELETED : 0;
234}
235
236/**
237 * Handle file uploads via XMLHttpRequest
238 *
239 * @return mixed false on error, id of the new file on success
240 */
241function media_upload_xhr($ns,$auth){
242    if(!checkSecurityToken()) return false;
243    global $INPUT;
244
245    $id = $INPUT->get->str('qqfile');
246    list($ext,$mime,$dl) = mimetype($id);
247    $input = fopen("php://input", "r");
248    if (!($tmp = io_mktmpdir())) return false;
249    $path = $tmp.'/'.md5($id);
250    $target = fopen($path, "w");
251    $realSize = stream_copy_to_stream($input, $target);
252    fclose($target);
253    fclose($input);
254    if (isset($_SERVER["CONTENT_LENGTH"]) && ($realSize != (int)$_SERVER["CONTENT_LENGTH"])){
255        unlink($path);
256        return false;
257    }
258
259    $res = media_save(
260        array('name' => $path,
261            'mime' => $mime,
262            'ext'  => $ext),
263        $ns.':'.$id,
264        (($INPUT->get->str('ow') == 'checked') ? true : false),
265        $auth,
266        'copy'
267    );
268    unlink($path);
269    if ($tmp) dir_delete($tmp);
270    if (is_array($res)) {
271        msg($res[0], $res[1]);
272        return false;
273    }
274    return $res;
275}
276
277/**
278 * Handles media file uploads
279 *
280 * @author Andreas Gohr <andi@splitbrain.org>
281 * @author Michael Klier <chi@chimeric.de>
282 * @return mixed false on error, id of the new file on success
283 */
284function media_upload($ns,$auth,$file=false){
285    if(!checkSecurityToken()) return false;
286    global $lang;
287    global $INPUT;
288
289    // get file and id
290    $id   = $INPUT->post->str('mediaid');
291    if (!$file) $file = $_FILES['upload'];
292    if(empty($id)) $id = $file['name'];
293
294    // check for errors (messages are done in lib/exe/mediamanager.php)
295    if($file['error']) return false;
296
297    // check extensions
298    list($fext,$fmime,$dl) = mimetype($file['name']);
299    list($iext,$imime,$dl) = mimetype($id);
300    if($fext && !$iext){
301        // no extension specified in id - read original one
302        $id   .= '.'.$fext;
303        $imime = $fmime;
304    }elseif($fext && $fext != $iext){
305        // extension was changed, print warning
306        msg(sprintf($lang['mediaextchange'],$fext,$iext));
307    }
308
309    $res = media_save(array('name' => $file['tmp_name'],
310                            'mime' => $imime,
311                            'ext'  => $iext), $ns.':'.$id,
312                      $INPUT->post->bool('ow'), $auth, 'copy_uploaded_file');
313    if (is_array($res)) {
314        msg($res[0], $res[1]);
315        return false;
316    }
317    return $res;
318}
319
320/**
321 * An alternative to move_uploaded_file that copies
322 *
323 * Using copy, makes sure any setgid bits on the media directory are honored
324 *
325 * @see   move_uploaded_file()
326 * @param string $from
327 * @param string $to
328 * @return bool
329 */
330function copy_uploaded_file($from, $to){
331    if(!is_uploaded_file($from)) return false;
332    $ok = copy($from, $to);
333    @unlink($from);
334    return $ok;
335}
336
337/**
338 * This generates an action event and delegates to _media_upload_action().
339 * Action plugins are allowed to pre/postprocess the uploaded file.
340 * (The triggered event is preventable.)
341 *
342 * Event data:
343 * $data[0]     fn_tmp: the temporary file name (read from $_FILES)
344 * $data[1]     fn: the file name of the uploaded file
345 * $data[2]     id: the future directory id of the uploaded file
346 * $data[3]     imime: the mimetype of the uploaded file
347 * $data[4]     overwrite: if an existing file is going to be overwritten
348 *
349 * @triggers MEDIA_UPLOAD_FINISH
350 */
351function media_save($file, $id, $ow, $auth, $move) {
352    if($auth < AUTH_UPLOAD) {
353        return array("You don't have permissions to upload files.", -1);
354    }
355
356    if (!isset($file['mime']) || !isset($file['ext'])) {
357        list($ext, $mime) = mimetype($id);
358        if (!isset($file['mime'])) {
359            $file['mime'] = $mime;
360        }
361        if (!isset($file['ext'])) {
362            $file['ext'] = $ext;
363        }
364    }
365
366    global $lang, $conf;
367
368    // get filename
369    $id   = cleanID($id);
370    $fn   = mediaFN($id);
371
372    // get filetype regexp
373    $types = array_keys(getMimeTypes());
374    $types = array_map(create_function('$q','return preg_quote($q,"/");'),$types);
375    $regex = join('|',$types);
376
377    // because a temp file was created already
378    if(!preg_match('/\.('.$regex.')$/i',$fn)) {
379        return array($lang['uploadwrong'],-1);
380    }
381
382    //check for overwrite
383    $overwrite = @file_exists($fn);
384    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
385    if($overwrite && (!$ow || $auth < $auth_ow)) {
386        return array($lang['uploadexist'], 0);
387    }
388    // check for valid content
389    $ok = media_contentcheck($file['name'], $file['mime']);
390    if($ok == -1){
391        return array(sprintf($lang['uploadbadcontent'],'.' . $file['ext']),-1);
392    }elseif($ok == -2){
393        return array($lang['uploadspam'],-1);
394    }elseif($ok == -3){
395        return array($lang['uploadxss'],-1);
396    }
397
398    // prepare event data
399    $data[0] = $file['name'];
400    $data[1] = $fn;
401    $data[2] = $id;
402    $data[3] = $file['mime'];
403    $data[4] = $overwrite;
404    $data[5] = $move;
405
406    // trigger event
407    return trigger_event('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
408}
409
410/**
411 * Callback adapter for media_upload_finish()
412 * @author Michael Klier <chi@chimeric.de>
413 */
414function _media_upload_action($data) {
415    // fixme do further sanity tests of given data?
416    if(is_array($data) && count($data)===6) {
417        return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
418    } else {
419        return false; //callback error
420    }
421}
422
423/**
424 * Saves an uploaded media file
425 *
426 * @author Andreas Gohr <andi@splitbrain.org>
427 * @author Michael Klier <chi@chimeric.de>
428 * @author Kate Arzamastseva <pshns@ukr.net>
429 */
430function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') {
431    global $conf;
432    global $lang;
433    global $REV;
434
435    $old = @filemtime($fn);
436    if(!@file_exists(mediaFN($id, $old)) && @file_exists($fn)) {
437        // add old revision to the attic if missing
438        media_saveOldRevision($id);
439    }
440
441    // prepare directory
442    io_createNamespace($id, 'media');
443
444    if($move($fn_tmp, $fn)) {
445        @clearstatcache(true,$fn);
446        $new = @filemtime($fn);
447        // Set the correct permission here.
448        // Always chmod media because they may be saved with different permissions than expected from the php umask.
449        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
450        chmod($fn, $conf['fmode']);
451        msg($lang['uploadsucc'],1);
452        media_notify($id,$fn,$imime,$old);
453        // add a log entry to the media changelog
454        if ($REV){
455            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_REVERT, sprintf($lang['restored'], dformat($REV)), $REV);
456        } elseif ($overwrite) {
457            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT);
458        } else {
459            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
460        }
461        return $id;
462    }else{
463        return array($lang['uploadfail'],-1);
464    }
465}
466
467/**
468 * Moves the current version of media file to the media_attic
469 * directory
470 *
471 * @author Kate Arzamastseva <pshns@ukr.net>
472 * @param string $id
473 * @return int - revision date
474 */
475function media_saveOldRevision($id){
476    global $conf, $lang;
477
478    $oldf = mediaFN($id);
479    if(!@file_exists($oldf)) return '';
480    $date = filemtime($oldf);
481    if (!$conf['mediarevisions']) return $date;
482
483    if (!getRevisionInfo($id, $date, 8192, true)) {
484        // there was an external edit,
485        // there is no log entry for current version of file
486        if (!@file_exists(mediaMetaFN($id,'.changes'))) {
487            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
488        } else {
489            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_EDIT);
490        }
491    }
492
493    $newf = mediaFN($id,$date);
494    io_makeFileDir($newf);
495    if(copy($oldf, $newf)) {
496        // Set the correct permission here.
497        // Always chmod media because they may be saved with different permissions than expected from the php umask.
498        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
499        chmod($newf, $conf['fmode']);
500    }
501    return $date;
502}
503
504/**
505 * This function checks if the uploaded content is really what the
506 * mimetype says it is. We also do spam checking for text types here.
507 *
508 * We need to do this stuff because we can not rely on the browser
509 * to do this check correctly. Yes, IE is broken as usual.
510 *
511 * @author Andreas Gohr <andi@splitbrain.org>
512 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
513 * @fixme  check all 26 magic IE filetypes here?
514 */
515function media_contentcheck($file,$mime){
516    global $conf;
517    if($conf['iexssprotect']){
518        $fh = @fopen($file, 'rb');
519        if($fh){
520            $bytes = fread($fh, 256);
521            fclose($fh);
522            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
523                return -3;
524            }
525        }
526    }
527    if(substr($mime,0,6) == 'image/'){
528        $info = @getimagesize($file);
529        if($mime == 'image/gif' && $info[2] != 1){
530            return -1;
531        }elseif($mime == 'image/jpeg' && $info[2] != 2){
532            return -1;
533        }elseif($mime == 'image/png' && $info[2] != 3){
534            return -1;
535        }
536        # fixme maybe check other images types as well
537    }elseif(substr($mime,0,5) == 'text/'){
538        global $TEXT;
539        $TEXT = io_readFile($file);
540        if(checkwordblock()){
541            return -2;
542        }
543    }
544    return 0;
545}
546
547/**
548 * Send a notify mail on uploads
549 *
550 * @author Andreas Gohr <andi@splitbrain.org>
551 */
552function media_notify($id,$file,$mime,$old_rev=false){
553    global $conf;
554    if(empty($conf['notify'])) return; //notify enabled?
555
556    $subscription = new Subscription();
557    return $subscription->send_media_diff($conf['notify'], 'uploadmail', $id, $old_rev, '');
558}
559
560/**
561 * List all files in a given Media namespace
562 */
563function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false,$sort=false){
564    global $conf;
565    global $lang;
566    $ns = cleanID($ns);
567
568    // check auth our self if not given (needed for ajax calls)
569    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
570
571    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
572
573    if($auth < AUTH_READ){
574        // FIXME: print permission warning here instead?
575        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
576    }else{
577        if (!$fullscreenview) media_uploadform($ns, $auth);
578
579        $dir = utf8_encodeFN(str_replace(':','/',$ns));
580        $data = array();
581        search($data,$conf['mediadir'],'search_media',
582                array('showmsg'=>true,'depth'=>1),$dir,1,$sort);
583
584        if(!count($data)){
585            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
586        }else {
587            if ($fullscreenview) {
588                echo '<ul class="' . _media_get_list_type() . '">';
589            }
590            foreach($data as $item){
591                if (!$fullscreenview) {
592                    media_printfile($item,$auth,$jump);
593                } else {
594                    media_printfile_thumbs($item,$auth,$jump);
595                }
596            }
597            if ($fullscreenview) echo '</ul>'.NL;
598        }
599    }
600    if (!$fullscreenview) media_searchform($ns);
601}
602
603/**
604 * Prints tabs for files list actions
605 *
606 * @author Kate Arzamastseva <pshns@ukr.net>
607 * @author Adrian Lang <mail@adrianlang.de>
608 *
609 * @param string $selected_tab - opened tab
610 */
611
612function media_tabs_files($selected_tab = ''){
613    global $lang;
614    $tabs = array();
615    foreach(array('files'  => 'mediaselect',
616                  'upload' => 'media_uploadtab',
617                  'search' => 'media_searchtab') as $tab => $caption) {
618        $tabs[$tab] = array('href'    => media_managerURL(array('tab_files' => $tab), '&'),
619                            'caption' => $lang[$caption]);
620    }
621
622    html_tabs($tabs, $selected_tab);
623}
624
625/**
626 * Prints tabs for files details actions
627 *
628 * @author Kate Arzamastseva <pshns@ukr.net>
629 * @param string $selected_tab - opened tab
630 */
631function media_tabs_details($image, $selected_tab = ''){
632    global $lang, $conf;
633
634    $tabs = array();
635    $tabs['view'] = array('href'    => media_managerURL(array('tab_details' => 'view'), '&'),
636                          'caption' => $lang['media_viewtab']);
637
638    list($ext, $mime) = mimetype($image);
639    if ($mime == 'image/jpeg' && @file_exists(mediaFN($image))) {
640        $tabs['edit'] = array('href'    => media_managerURL(array('tab_details' => 'edit'), '&'),
641                              'caption' => $lang['media_edittab']);
642    }
643    if ($conf['mediarevisions']) {
644        $tabs['history'] = array('href'    => media_managerURL(array('tab_details' => 'history'), '&'),
645                                 'caption' => $lang['media_historytab']);
646    }
647
648    html_tabs($tabs, $selected_tab);
649}
650
651/**
652 * Prints options for the tab that displays a list of all files
653 *
654 * @author Kate Arzamastseva <pshns@ukr.net>
655 */
656function media_tab_files_options(){
657    global $lang;
658    global $NS;
659    global $INPUT;
660    global $ID;
661    $form = new Doku_Form(array('class' => 'options', 'method' => 'get',
662                                'action' => wl($ID)));
663    $media_manager_params = media_managerURL(array(), '', false, true);
664    foreach($media_manager_params as $pKey => $pVal){
665        $form->addHidden($pKey, $pVal);
666    }
667    $form->addHidden('sectok', null);
668    if ($INPUT->has('q')) {
669        $form->addHidden('q', $INPUT->str('q'));
670    }
671    $form->addElement('<ul>'.NL);
672    foreach(array('list' => array('listType', array('thumbs', 'rows')),
673                  'sort' => array('sortBy', array('name', 'date')))
674            as $group => $content) {
675        $checked = "_media_get_${group}_type";
676        $checked = $checked();
677
678        $form->addElement('<li class="' . $content[0] . '">');
679        foreach($content[1] as $option) {
680            $attrs = array();
681            if ($checked == $option) {
682                $attrs['checked'] = 'checked';
683            }
684            $form->addElement(form_makeRadioField($group, $option,
685                                       $lang['media_' . $group . '_' . $option],
686                                                  $content[0] . '__' . $option,
687                                                  $option, $attrs));
688        }
689        $form->addElement('</li>'.NL);
690    }
691    $form->addElement('<li>');
692    $form->addElement(form_makeButton('submit', '', $lang['btn_apply']));
693    $form->addElement('</li>'.NL);
694    $form->addElement('</ul>'.NL);
695    $form->printForm();
696}
697
698/**
699 * Returns type of sorting for the list of files in media manager
700 *
701 * @author Kate Arzamastseva <pshns@ukr.net>
702 * @return string - sort type
703 */
704function _media_get_sort_type() {
705    return _media_get_display_param('sort', array('default' => 'name', 'date'));
706}
707
708function _media_get_list_type() {
709    return _media_get_display_param('list', array('default' => 'thumbs', 'rows'));
710}
711
712function _media_get_display_param($param, $values) {
713    global $INPUT;
714    if (in_array($INPUT->str($param), $values)) {
715        // FIXME: Set cookie
716        return $INPUT->str($param);
717    } else {
718        $val = get_doku_pref($param, $values['default']);
719        if (!in_array($val, $values)) {
720            $val = $values['default'];
721        }
722        return $val;
723    }
724}
725
726/**
727 * Prints tab that displays a list of all files
728 *
729 * @author Kate Arzamastseva <pshns@ukr.net>
730 */
731function media_tab_files($ns,$auth=null,$jump='') {
732    global $lang;
733    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
734
735    if($auth < AUTH_READ){
736        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
737    }else{
738        media_filelist($ns,$auth,$jump,true,_media_get_sort_type());
739    }
740}
741
742/**
743 * Prints tab that displays uploading form
744 *
745 * @author Kate Arzamastseva <pshns@ukr.net>
746 */
747function media_tab_upload($ns,$auth=null,$jump='') {
748    global $lang;
749    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
750
751    echo '<div class="upload">'.NL;
752    if ($auth >= AUTH_UPLOAD) {
753        echo '<p>' . $lang['mediaupload'] . '</p>';
754    }
755    media_uploadform($ns, $auth, true);
756    echo '</div>'.NL;
757}
758
759/**
760 * Prints tab that displays search form
761 *
762 * @author Kate Arzamastseva <pshns@ukr.net>
763 */
764function media_tab_search($ns,$auth=null) {
765    global $lang;
766    global $INPUT;
767
768    $do = $INPUT->str('mediado');
769    $query = $INPUT->str('q');
770    echo '<div class="search">'.NL;
771
772    media_searchform($ns, $query, true);
773    if ($do == 'searchlist' || $query) {
774        media_searchlist($query,$ns,$auth,true,_media_get_sort_type());
775    }
776    echo '</div>'.NL;
777}
778
779/**
780 * Prints tab that displays mediafile details
781 *
782 * @author Kate Arzamastseva <pshns@ukr.net>
783 */
784function media_tab_view($image, $ns, $auth=null, $rev=false) {
785    global $lang, $conf;
786    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
787
788    if ($image && $auth >= AUTH_READ) {
789        $meta = new JpegMeta(mediaFN($image, $rev));
790        media_preview($image, $auth, $rev, $meta);
791        media_preview_buttons($image, $auth, $rev);
792        media_details($image, $auth, $rev, $meta);
793
794    } else {
795        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
796    }
797}
798
799/**
800 * Prints tab that displays form for editing mediafile metadata
801 *
802 * @author Kate Arzamastseva <pshns@ukr.net>
803 */
804function media_tab_edit($image, $ns, $auth=null) {
805    global $lang;
806    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
807
808    if ($image) {
809        list($ext, $mime) = mimetype($image);
810        if ($mime == 'image/jpeg') media_metaform($image,$auth);
811    }
812}
813
814/**
815 * Prints tab that displays mediafile revisions
816 *
817 * @author Kate Arzamastseva <pshns@ukr.net>
818 */
819function media_tab_history($image, $ns, $auth=null) {
820    global $lang;
821    global $INPUT;
822
823    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
824    $do = $INPUT->str('mediado');
825
826    if ($auth >= AUTH_READ && $image) {
827        if ($do == 'diff'){
828            media_diff($image, $ns, $auth);
829        } else {
830            $first = $INPUT->int('first');
831            html_revisions($first, $image);
832        }
833    } else {
834        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
835    }
836}
837
838/**
839 * Prints mediafile details
840 *
841 * @author Kate Arzamastseva <pshns@ukr.net>
842 */
843function media_preview($image, $auth, $rev=false, $meta=false) {
844
845    $size = media_image_preview_size($image, $rev, $meta);
846
847    if ($size) {
848        global $lang;
849        echo '<div class="image">';
850
851        $more = array();
852        if ($rev) {
853            $more['rev'] = $rev;
854        } else {
855            $t = @filemtime(mediaFN($image));
856            $more['t'] = $t;
857        }
858
859        $more['w'] = $size[0];
860        $more['h'] = $size[1];
861        $src = ml($image, $more);
862
863        echo '<a href="'.$src.'" target="_blank" title="'.$lang['mediaview'].'">';
864        echo '<img src="'.$src.'" alt="" style="max-width: '.$size[0].'px;" />';
865        echo '</a>';
866
867        echo '</div>'.NL;
868    }
869}
870
871/**
872 * Prints mediafile action buttons
873 *
874 * @author Kate Arzamastseva <pshns@ukr.net>
875 */
876function media_preview_buttons($image, $auth, $rev=false) {
877    global $lang, $conf;
878
879    echo '<ul class="actions">'.NL;
880
881    if($auth >= AUTH_DELETE && !$rev && @file_exists(mediaFN($image))){
882
883        // delete button
884        $form = new Doku_Form(array('id' => 'mediamanager__btn_delete',
885            'action'=>media_managerURL(array('delete' => $image), '&')));
886        $form->addElement(form_makeButton('submit','',$lang['btn_delete']));
887        echo '<li>';
888        $form->printForm();
889        echo '</li>'.NL;
890    }
891
892    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
893    if($auth >= $auth_ow && !$rev){
894
895        // upload new version button
896        $form = new Doku_Form(array('id' => 'mediamanager__btn_update',
897            'action'=>media_managerURL(array('image' => $image, 'mediado' => 'update'), '&')));
898        $form->addElement(form_makeButton('submit','',$lang['media_update']));
899        echo '<li>';
900        $form->printForm();
901        echo '</li>'.NL;
902    }
903
904    if($auth >= AUTH_UPLOAD && $rev && $conf['mediarevisions'] && @file_exists(mediaFN($image, $rev))){
905
906        // restore button
907        $form = new Doku_Form(array('id' => 'mediamanager__btn_restore',
908            'action'=>media_managerURL(array('image' => $image), '&')));
909        $form->addHidden('mediado','restore');
910        $form->addHidden('rev',$rev);
911        $form->addElement(form_makeButton('submit','',$lang['media_restore']));
912        echo '<li>';
913        $form->printForm();
914        echo '</li>'.NL;
915    }
916
917    echo '</ul>'.NL;
918}
919
920/**
921 * Returns image width and height for mediamanager preview panel
922 *
923 * @author Kate Arzamastseva <pshns@ukr.net>
924 * @param string $image
925 * @param int $rev
926 * @param JpegMeta $meta
927 * @return array
928 */
929function media_image_preview_size($image, $rev, $meta, $size = 500) {
930    if (!preg_match("/\.(jpe?g|gif|png)$/", $image) || !file_exists(mediaFN($image, $rev))) return false;
931
932    $info = getimagesize(mediaFN($image, $rev));
933    $w = (int) $info[0];
934    $h = (int) $info[1];
935
936    if($meta && ($w > $size || $h > $size)){
937        $ratio = $meta->getResizeRatio($size, $size);
938        $w = floor($w * $ratio);
939        $h = floor($h * $ratio);
940    }
941    return array($w, $h);
942}
943
944/**
945 * Returns the requested EXIF/IPTC tag from the image meta
946 *
947 * @author Kate Arzamastseva <pshns@ukr.net>
948 * @param array $tags
949 * @param JpegMeta $meta
950 * @param string $alt
951 * @return string
952 */
953function media_getTag($tags,$meta,$alt=''){
954    if($meta === false) return $alt;
955    $info = $meta->getField($tags);
956    if($info == false) return $alt;
957    return $info;
958}
959
960/**
961 * Returns mediafile tags
962 *
963 * @author Kate Arzamastseva <pshns@ukr.net>
964 * @param JpegMeta $meta
965 * @return array
966 */
967function media_file_tags($meta) {
968    global $config_cascade;
969
970    // load the field descriptions
971    static $fields = null;
972    if(is_null($fields)){
973        $config_files = getConfigFiles('mediameta');
974        foreach ($config_files as $config_file) {
975            if(@file_exists($config_file)) include($config_file);
976        }
977    }
978
979    $tags = array();
980
981    foreach($fields as $key => $tag){
982        $t = array();
983        if (!empty($tag[0])) $t = array($tag[0]);
984        if(is_array($tag[3])) $t = array_merge($t,$tag[3]);
985        $value = media_getTag($t, $meta);
986        $tags[] = array('tag' => $tag, 'value' => $value);
987    }
988
989    return $tags;
990}
991
992/**
993 * Prints mediafile tags
994 *
995 * @author Kate Arzamastseva <pshns@ukr.net>
996 */
997function media_details($image, $auth, $rev=false, $meta=false) {
998    global $lang;
999
1000    if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev));
1001    $tags = media_file_tags($meta);
1002
1003    echo '<dl>'.NL;
1004    foreach($tags as $tag){
1005        if ($tag['value']) {
1006            $value = cleanText($tag['value']);
1007            echo '<dt>'.$lang[$tag['tag'][1]].':</dt><dd>';
1008            if ($tag['tag'][2] == 'date') echo dformat($value);
1009            else echo hsc($value);
1010            echo '</dd>'.NL;
1011        }
1012    }
1013    echo '</dl>'.NL;
1014}
1015
1016/**
1017 * Shows difference between two revisions of file
1018 *
1019 * @author Kate Arzamastseva <pshns@ukr.net>
1020 */
1021function media_diff($image, $ns, $auth, $fromajax = false) {
1022    global $lang;
1023    global $conf;
1024    global $INPUT;
1025
1026    if ($auth < AUTH_READ || !$image || !$conf['mediarevisions']) return '';
1027
1028    $rev1 = $INPUT->int('rev');
1029
1030    $rev2 = $INPUT->ref('rev2');
1031    if(is_array($rev2)){
1032        $rev1 = (int) $rev2[0];
1033        $rev2 = (int) $rev2[1];
1034
1035        if(!$rev1){
1036            $rev1 = $rev2;
1037            unset($rev2);
1038        }
1039    }else{
1040        $rev2 = $INPUT->int('rev2');
1041    }
1042
1043    if ($rev1 && !file_exists(mediaFN($image, $rev1))) $rev1 = false;
1044    if ($rev2 && !file_exists(mediaFN($image, $rev2))) $rev2 = false;
1045
1046    if($rev1 && $rev2){            // two specific revisions wanted
1047        // make sure order is correct (older on the left)
1048        if($rev1 < $rev2){
1049            $l_rev = $rev1;
1050            $r_rev = $rev2;
1051        }else{
1052            $l_rev = $rev2;
1053            $r_rev = $rev1;
1054        }
1055    }elseif($rev1){                // single revision given, compare to current
1056        $r_rev = '';
1057        $l_rev = $rev1;
1058    }else{                        // no revision was given, compare previous to current
1059        $r_rev = '';
1060        $revs = getRevisions($image, 0, 1, 8192, true);
1061        if (file_exists(mediaFN($image, $revs[0]))) {
1062            $l_rev = $revs[0];
1063        } else {
1064            $l_rev = '';
1065        }
1066    }
1067
1068    // prepare event data
1069    $data[0] = $image;
1070    $data[1] = $l_rev;
1071    $data[2] = $r_rev;
1072    $data[3] = $ns;
1073    $data[4] = $auth;
1074    $data[5] = $fromajax;
1075
1076    // trigger event
1077    return trigger_event('MEDIA_DIFF', $data, '_media_file_diff', true);
1078
1079}
1080
1081function _media_file_diff($data) {
1082    if(is_array($data) && count($data)===6) {
1083        return media_file_diff($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
1084    } else {
1085        return false;
1086    }
1087}
1088
1089/**
1090 * Shows difference between two revisions of image
1091 *
1092 * @author Kate Arzamastseva <pshns@ukr.net>
1093 */
1094function media_file_diff($image, $l_rev, $r_rev, $ns, $auth, $fromajax){
1095    global $lang;
1096    global $config_cascade;
1097    global $INPUT;
1098
1099    $l_meta = new JpegMeta(mediaFN($image, $l_rev));
1100    $r_meta = new JpegMeta(mediaFN($image, $r_rev));
1101
1102    $is_img = preg_match("/\.(jpe?g|gif|png)$/", $image);
1103    if ($is_img) {
1104        $l_size = media_image_preview_size($image, $l_rev, $l_meta);
1105        $r_size = media_image_preview_size($image, $r_rev, $r_meta);
1106        $is_img = ($l_size && $r_size && ($l_size[0] >= 30 || $r_size[0] >= 30));
1107
1108        $difftype = $INPUT->str('difftype');
1109
1110        if (!$fromajax) {
1111            $form = new Doku_Form(array(
1112                'action' => media_managerURL(array(), '&'),
1113                'method' => 'get',
1114                'id' => 'mediamanager__form_diffview',
1115                'class' => 'diffView'
1116            ));
1117            $form->addHidden('sectok', null);
1118            $form->addElement('<input type="hidden" name="rev2[]" value="'.$l_rev.'" ></input>');
1119            $form->addElement('<input type="hidden" name="rev2[]" value="'.$r_rev.'" ></input>');
1120            $form->addHidden('mediado', 'diff');
1121            $form->printForm();
1122
1123            echo NL.'<div id="mediamanager__diff" >'.NL;
1124        }
1125
1126        if ($difftype == 'opacity' || $difftype == 'portions') {
1127            media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $difftype);
1128            if (!$fromajax) echo '</div>';
1129            return '';
1130        }
1131    }
1132
1133    list($l_head, $r_head) = html_diff_head($l_rev, $r_rev, $image, true);
1134
1135    ?>
1136    <div class="table">
1137    <table>
1138      <tr>
1139        <th><?php echo $l_head; ?></th>
1140        <th><?php echo $r_head; ?></th>
1141      </tr>
1142    <?php
1143
1144    echo '<tr class="image">';
1145    echo '<td>';
1146    media_preview($image, $auth, $l_rev, $l_meta);
1147    echo '</td>';
1148
1149    echo '<td>';
1150    media_preview($image, $auth, $r_rev, $r_meta);
1151    echo '</td>';
1152    echo '</tr>'.NL;
1153
1154    echo '<tr class="actions">';
1155    echo '<td>';
1156    media_preview_buttons($image, $auth, $l_rev);
1157    echo '</td>';
1158
1159    echo '<td>';
1160    media_preview_buttons($image, $auth, $r_rev);
1161    echo '</td>';
1162    echo '</tr>'.NL;
1163
1164    $l_tags = media_file_tags($l_meta);
1165    $r_tags = media_file_tags($r_meta);
1166    // FIXME r_tags-only stuff
1167    foreach ($l_tags as $key => $l_tag) {
1168        if ($l_tag['value'] != $r_tags[$key]['value']) {
1169            $r_tags[$key]['highlighted'] = true;
1170            $l_tags[$key]['highlighted'] = true;
1171        } else if (!$l_tag['value'] || !$r_tags[$key]['value']) {
1172            unset($r_tags[$key]);
1173            unset($l_tags[$key]);
1174        }
1175    }
1176
1177    echo '<tr>';
1178    foreach(array($l_tags,$r_tags) as $tags){
1179        echo '<td>'.NL;
1180
1181        echo '<dl class="img_tags">';
1182        foreach($tags as $tag){
1183            $value = cleanText($tag['value']);
1184            if (!$value) $value = '-';
1185            echo '<dt>'.$lang[$tag['tag'][1]].':</dt>';
1186            echo '<dd>';
1187            if ($tag['highlighted']) {
1188                echo '<strong>';
1189            }
1190            if ($tag['tag'][2] == 'date') echo dformat($value);
1191            else echo hsc($value);
1192            if ($tag['highlighted']) {
1193                echo '</strong>';
1194            }
1195            echo '</dd>';
1196        }
1197        echo '</dl>'.NL;
1198
1199        echo '</td>';
1200    }
1201    echo '</tr>'.NL;
1202
1203    echo '</table>'.NL;
1204    echo '</div>'.NL;
1205
1206    if ($is_img && !$fromajax) echo '</div>';
1207}
1208
1209/**
1210 * Prints two images side by side
1211 * and slider
1212 *
1213 * @author Kate Arzamastseva <pshns@ukr.net>
1214 * @param string $image
1215 * @param int $l_rev
1216 * @param int $r_rev
1217 * @param array $l_size
1218 * @param array $r_size
1219 * @param string $type
1220 */
1221function media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $type) {
1222    if ($l_size != $r_size) {
1223        if ($r_size[0] > $l_size[0]) {
1224            $l_size = $r_size;
1225        }
1226    }
1227
1228    $l_more = array('rev' => $l_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1229    $r_more = array('rev' => $r_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1230
1231    $l_src = ml($image, $l_more);
1232    $r_src = ml($image, $r_more);
1233
1234    // slider
1235    echo '<div class="slider" style="max-width: '.($l_size[0]-20).'px;" ></div>'.NL;
1236
1237    // two images in divs
1238    echo '<div class="imageDiff ' . $type . '">'.NL;
1239    echo '<div class="image1" style="max-width: '.$l_size[0].'px;">';
1240    echo '<img src="'.$l_src.'" alt="" />';
1241    echo '</div>'.NL;
1242    echo '<div class="image2" style="max-width: '.$l_size[0].'px;">';
1243    echo '<img src="'.$r_src.'" alt="" />';
1244    echo '</div>'.NL;
1245    echo '</div>'.NL;
1246}
1247
1248/**
1249 * Restores an old revision of a media file
1250 *
1251 * @param string $image
1252 * @param int $rev
1253 * @param int $auth
1254 * @return string - file's id
1255 * @author Kate Arzamastseva <pshns@ukr.net>
1256 */
1257function media_restore($image, $rev, $auth){
1258    global $conf;
1259    if ($auth < AUTH_UPLOAD || !$conf['mediarevisions']) return false;
1260    $removed = (!file_exists(mediaFN($image)) && file_exists(mediaMetaFN($image, '.changes')));
1261    if (!$image || (!file_exists(mediaFN($image)) && !$removed)) return false;
1262    if (!$rev || !file_exists(mediaFN($image, $rev))) return false;
1263    list($iext,$imime,$dl) = mimetype($image);
1264    $res = media_upload_finish(mediaFN($image, $rev),
1265        mediaFN($image),
1266        $image,
1267        $imime,
1268        true,
1269        'copy');
1270    if (is_array($res)) {
1271        msg($res[0], $res[1]);
1272        return false;
1273    }
1274    return $res;
1275}
1276
1277/**
1278 * List all files found by the search request
1279 *
1280 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1281 * @author Andreas Gohr <gohr@cosmocode.de>
1282 * @author Kate Arzamastseva <pshns@ukr.net>
1283 * @triggers MEDIA_SEARCH
1284 */
1285function media_searchlist($query,$ns,$auth=null,$fullscreen=false,$sort=''){
1286    global $conf;
1287    global $lang;
1288
1289    $ns = cleanID($ns);
1290
1291    if ($query) {
1292        $evdata = array(
1293                'ns'    => $ns,
1294                'data'  => array(),
1295                'query' => $query
1296                );
1297        $evt = new Doku_Event('MEDIA_SEARCH', $evdata);
1298        if ($evt->advise_before()) {
1299            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
1300            $pattern = '/'.preg_quote($evdata['query'],'/').'/i';
1301            search($evdata['data'],
1302                    $conf['mediadir'],
1303                    'search_media',
1304                    array('showmsg'=>false,'pattern'=>$pattern),
1305                    $dir);
1306        }
1307
1308        $data = array();
1309        foreach ($evdata['data'] as $k => $v) {
1310            $data[$k] = ($sort == 'date') ? $v['mtime'] : $v['id'];
1311        }
1312        array_multisort($data, SORT_DESC, SORT_NUMERIC, $evdata['data']);
1313
1314        $evt->advise_after();
1315        unset($evt);
1316    }
1317
1318    if (!$fullscreen) {
1319        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
1320        media_searchform($ns,$query);
1321    }
1322
1323    if(!count($evdata['data'])){
1324        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
1325    }else {
1326        if ($fullscreen) {
1327            echo '<ul class="' . _media_get_list_type() . '">';
1328        }
1329        foreach($evdata['data'] as $item){
1330            if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
1331            else media_printfile_thumbs($item,$item['perm'],false,true);
1332        }
1333        if ($fullscreen) echo '</ul>'.NL;
1334    }
1335}
1336
1337/**
1338 * Formats and prints one file in the list
1339 */
1340function media_printfile($item,$auth,$jump,$display_namespace=false){
1341    global $lang;
1342    global $conf;
1343
1344    // Prepare zebra coloring
1345    // I always wanted to use this variable name :-D
1346    static $twibble = 1;
1347    $twibble *= -1;
1348    $zebra = ($twibble == -1) ? 'odd' : 'even';
1349
1350    // Automatically jump to recent action
1351    if($jump == $item['id']) {
1352        $jump = ' id="scroll__here" ';
1353    }else{
1354        $jump = '';
1355    }
1356
1357    // Prepare fileicons
1358    list($ext,$mime,$dl) = mimetype($item['file'],false);
1359    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
1360    $class = 'select mediafile mf_'.$class;
1361
1362    // Prepare filename
1363    $file = utf8_decodeFN($item['file']);
1364
1365    // Prepare info
1366    $info = '';
1367    if($item['isimg']){
1368        $info .= (int) $item['meta']->getField('File.Width');
1369        $info .= '&#215;';
1370        $info .= (int) $item['meta']->getField('File.Height');
1371        $info .= ' ';
1372    }
1373    $info .= '<i>'.dformat($item['mtime']).'</i>';
1374    $info .= ' ';
1375    $info .= filesize_h($item['size']);
1376
1377    // output
1378    echo '<div class="'.$zebra.'"'.$jump.' title="'.hsc($item['id']).'">'.NL;
1379    if (!$display_namespace) {
1380        echo '<a id="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
1381    } else {
1382        echo '<a id="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
1383    }
1384    echo '<span class="info">('.$info.')</span>'.NL;
1385
1386    // view button
1387    $link = ml($item['id'],'',true);
1388    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
1389        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
1390
1391    // mediamanager button
1392    $link = wl('',array('do'=>'media','image'=>$item['id'],'ns'=>getNS($item['id'])));
1393    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/mediamanager.png" '.
1394        'alt="'.$lang['btn_media'].'" title="'.$lang['btn_media'].'" class="btn" /></a>';
1395
1396    // delete button
1397    if($item['writable'] && $auth >= AUTH_DELETE){
1398        $link = DOKU_BASE.'lib/exe/mediamanager.php?delete='.rawurlencode($item['id']).
1399            '&amp;sectok='.getSecurityToken();
1400        echo ' <a href="'.$link.'" class="btn_media_delete" title="'.$item['id'].'">'.
1401            '<img src="'.DOKU_BASE.'lib/images/trash.png" alt="'.$lang['btn_delete'].'" '.
1402            'title="'.$lang['btn_delete'].'" class="btn" /></a>';
1403    }
1404
1405    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
1406    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
1407    echo '</div>';
1408    if($item['isimg']) media_printimgdetail($item);
1409    echo '<div class="clearer"></div>'.NL;
1410    echo '</div>'.NL;
1411}
1412
1413function media_printicon($filename){
1414    list($ext,$mime,$dl) = mimetype(mediaFN($filename),false);
1415
1416    if (@file_exists(DOKU_INC.'lib/images/fileicons/'.$ext.'.png')) {
1417        $icon = DOKU_BASE.'lib/images/fileicons/'.$ext.'.png';
1418    } else {
1419        $icon = DOKU_BASE.'lib/images/fileicons/file.png';
1420    }
1421
1422    return '<img src="'.$icon.'" alt="'.$filename.'" class="icon" />';
1423
1424}
1425
1426/**
1427 * Formats and prints one file in the list in the thumbnails view
1428 *
1429 * @author Kate Arzamastseva <pshns@ukr.net>
1430 */
1431function media_printfile_thumbs($item,$auth,$jump=false,$display_namespace=false){
1432    global $lang;
1433    global $conf;
1434
1435    // Prepare filename
1436    $file = utf8_decodeFN($item['file']);
1437
1438    // output
1439    echo '<li><dl title="'.hsc($item['id']).'">'.NL;
1440
1441        echo '<dt>';
1442    if($item['isimg']) {
1443        media_printimgdetail($item, true);
1444
1445    } else {
1446        echo '<a id="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1447            media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1448            'tab_details' => 'view')).'">';
1449        echo media_printicon($item['id']);
1450        echo '</a>';
1451    }
1452    echo '</dt>'.NL;
1453    if (!$display_namespace) {
1454        $name = hsc($file);
1455    } else {
1456        $name = hsc($item['id']);
1457    }
1458    echo '<dd class="name"><a href="'.media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1459        'tab_details' => 'view')).'" id="h_:'.$item['id'].'">'.$name.'</a></dd>'.NL;
1460
1461    if($item['isimg']){
1462        $size = '';
1463        $size .= (int) $item['meta']->getField('File.Width');
1464        $size .= '&#215;';
1465        $size .= (int) $item['meta']->getField('File.Height');
1466        echo '<dd class="size">'.$size.'</dd>'.NL;
1467    } else {
1468        echo '<dd class="size">&#160;</dd>'.NL;
1469    }
1470    $date = dformat($item['mtime']);
1471    echo '<dd class="date">'.$date.'</dd>'.NL;
1472    $filesize = filesize_h($item['size']);
1473    echo '<dd class="filesize">'.$filesize.'</dd>'.NL;
1474    echo '</dl></li>'.NL;
1475}
1476
1477/**
1478 * Prints a thumbnail and metainfos
1479 */
1480function media_printimgdetail($item, $fullscreen=false){
1481    // prepare thumbnail
1482    $size = $fullscreen ? 90 : 120;
1483
1484    $w = (int) $item['meta']->getField('File.Width');
1485    $h = (int) $item['meta']->getField('File.Height');
1486    if($w>$size || $h>$size){
1487        if (!$fullscreen) {
1488            $ratio = $item['meta']->getResizeRatio($size);
1489        } else {
1490            $ratio = $item['meta']->getResizeRatio($size,$size);
1491        }
1492        $w = floor($w * $ratio);
1493        $h = floor($h * $ratio);
1494    }
1495    $src = ml($item['id'],array('w'=>$w,'h'=>$h,'t'=>$item['mtime']));
1496    $p = array();
1497    if (!$fullscreen) {
1498        // In fullscreen mediamanager view, image resizing is done via CSS.
1499        $p['width']  = $w;
1500        $p['height'] = $h;
1501    }
1502    $p['alt']    = $item['id'];
1503    $att = buildAttributes($p);
1504
1505    // output
1506    if ($fullscreen) {
1507        echo '<a id="l_:'.$item['id'].'" class="image thumb" href="'.
1508            media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']), 'tab_details' => 'view')).'">';
1509        echo '<img src="'.$src.'" '.$att.' />';
1510        echo '</a>';
1511    }
1512
1513    if ($fullscreen) return;
1514
1515    echo '<div class="detail">';
1516    echo '<div class="thumb">';
1517    echo '<a id="d_:'.$item['id'].'" class="select">';
1518    echo '<img src="'.$src.'" '.$att.' />';
1519    echo '</a>';
1520    echo '</div>';
1521
1522    // read EXIF/IPTC data
1523    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
1524    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
1525                'EXIF.TIFFImageDescription',
1526                'EXIF.TIFFUserComment'));
1527    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
1528    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
1529
1530    // print EXIF/IPTC data
1531    if($t || $d || $k ){
1532        echo '<p>';
1533        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
1534        if($d) echo htmlspecialchars($d).'<br />';
1535        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
1536        echo '</p>';
1537    }
1538    echo '</div>';
1539}
1540
1541/**
1542 * Build link based on the current, adding/rewriting
1543 * parameters
1544 *
1545 * @author Kate Arzamastseva <pshns@ukr.net>
1546 * @param array $params
1547 * @param string $amp - separator
1548 * @return string - link
1549 */
1550function media_managerURL($params=false, $amp='&amp;', $abs=false, $params_array=false) {
1551    global $conf;
1552    global $ID;
1553    global $INPUT;
1554
1555    $gets = array('do' => 'media');
1556    $media_manager_params = array('tab_files', 'tab_details', 'image', 'ns', 'list', 'sort');
1557    foreach ($media_manager_params as $x) {
1558        if ($INPUT->has($x)) $gets[$x] = $INPUT->str($x);
1559    }
1560
1561    if ($params) {
1562        $gets = $params + $gets;
1563    }
1564    unset($gets['id']);
1565    if (isset($gets['delete'])) {
1566        unset($gets['image']);
1567        unset($gets['tab_details']);
1568    }
1569
1570    if ($params_array) return $gets;
1571
1572    return wl($ID,$gets,$abs,$amp);
1573}
1574
1575/**
1576 * Print the media upload form if permissions are correct
1577 *
1578 * @author Andreas Gohr <andi@splitbrain.org>
1579 * @author Kate Arzamastseva <pshns@ukr.net>
1580 */
1581function media_uploadform($ns, $auth, $fullscreen = false){
1582    global $lang;
1583    global $conf;
1584    global $INPUT;
1585
1586    if($auth < AUTH_UPLOAD) {
1587        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
1588        return;
1589    }
1590    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
1591
1592    $update = false;
1593    $id = '';
1594    if ($auth >= $auth_ow && $fullscreen && $INPUT->str('mediado') == 'update') {
1595        $update = true;
1596        $id = cleanID($INPUT->str('image'));
1597    }
1598
1599    // The default HTML upload form
1600    $params = array('id'      => 'dw__upload',
1601                    'enctype' => 'multipart/form-data');
1602    if (!$fullscreen) {
1603        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1604    } else {
1605        $params['action'] = media_managerURL(array('tab_files' => 'files',
1606            'tab_details' => 'view'), '&');
1607    }
1608
1609    $form = new Doku_Form($params);
1610    if (!$fullscreen) echo '<div class="upload">' . $lang['mediaupload'] . '</div>';
1611    $form->addElement(formSecurityToken());
1612    $form->addHidden('ns', hsc($ns));
1613    $form->addElement(form_makeOpenTag('p'));
1614    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
1615    $form->addElement(form_makeCloseTag('p'));
1616    $form->addElement(form_makeOpenTag('p'));
1617    $form->addElement(form_makeTextField('mediaid', noNS($id), $lang['txt_filename'].':', 'upload__name'));
1618    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
1619    $form->addElement(form_makeCloseTag('p'));
1620
1621    if($auth >= $auth_ow){
1622        $form->addElement(form_makeOpenTag('p'));
1623        $attrs = array();
1624        if ($update) $attrs['checked'] = 'checked';
1625        $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check', $attrs));
1626        $form->addElement(form_makeCloseTag('p'));
1627    }
1628
1629    echo NL.'<div id="mediamanager__uploader">'.NL;
1630    html_form('upload', $form);
1631
1632    echo '</div>'.NL;
1633
1634    echo '<p class="maxsize">';
1635    printf($lang['maxuploadsize'],filesize_h(media_getuploadsize()));
1636    echo '</p>'.NL;
1637
1638}
1639
1640/**
1641 * Returns the size uploaded files may have
1642 *
1643 * This uses a conservative approach using the lowest number found
1644 * in any of the limiting ini settings
1645 *
1646 * @returns int size in bytes
1647 */
1648function media_getuploadsize(){
1649    $okay = 0;
1650
1651    $post = (int) php_to_byte(@ini_get('post_max_size'));
1652    $suho = (int) php_to_byte(@ini_get('suhosin.post.max_value_length'));
1653    $upld = (int) php_to_byte(@ini_get('upload_max_filesize'));
1654
1655    if($post && ($post < $okay || $okay == 0)) $okay = $post;
1656    if($suho && ($suho < $okay || $okay == 0)) $okay = $suho;
1657    if($upld && ($upld < $okay || $okay == 0)) $okay = $upld;
1658
1659    return $okay;
1660}
1661
1662/**
1663 * Print the search field form
1664 *
1665 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1666 * @author Kate Arzamastseva <pshns@ukr.net>
1667 */
1668function media_searchform($ns,$query='',$fullscreen=false){
1669    global $lang;
1670
1671    // The default HTML search form
1672    $params = array('id' => 'dw__mediasearch');
1673    if (!$fullscreen) {
1674        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1675    } else {
1676        $params['action'] = media_managerURL(array(), '&');
1677    }
1678    $form = new Doku_Form($params);
1679    $form->addHidden('ns', $ns);
1680    $form->addHidden($fullscreen ? 'mediado' : 'do', 'searchlist');
1681
1682    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediasearch'] . '</div>'.NL);
1683    $form->addElement(form_makeOpenTag('p'));
1684    $form->addElement(form_makeTextField('q', $query,$lang['searchmedia'],'','',array('title'=>sprintf($lang['searchmedia_in'],hsc($ns).':*'))));
1685    $form->addElement(form_makeButton('submit', '', $lang['btn_search']));
1686    $form->addElement(form_makeCloseTag('p'));
1687    html_form('searchmedia', $form);
1688}
1689
1690/**
1691 * Build a tree outline of available media namespaces
1692 *
1693 * @author Andreas Gohr <andi@splitbrain.org>
1694 */
1695function media_nstree($ns){
1696    global $conf;
1697    global $lang;
1698
1699    // currently selected namespace
1700    $ns  = cleanID($ns);
1701    if(empty($ns)){
1702        global $ID;
1703        $ns = (string)getNS($ID);
1704    }
1705
1706    $ns_dir  = utf8_encodeFN(str_replace(':','/',$ns));
1707
1708    $data = array();
1709    search($data,$conf['mediadir'],'search_index',array('ns' => $ns_dir, 'nofiles' => true));
1710
1711    // wrap a list with the root level around the other namespaces
1712    array_unshift($data, array('level' => 0, 'id' => '', 'open' =>'true',
1713                               'label' => '['.$lang['mediaroot'].']'));
1714
1715    // insert the current ns into the hierarchy if it isn't already part of it
1716    $ns_parts = explode(':', $ns);
1717    $tmp_ns = '';
1718    $pos = 0;
1719    foreach ($ns_parts as $level => $part) {
1720        if ($tmp_ns) $tmp_ns .= ':'.$part;
1721        else $tmp_ns = $part;
1722
1723        // find the namespace parts or insert them
1724        while ($data[$pos]['id'] != $tmp_ns) {
1725            if ($pos >= count($data) || ($data[$pos]['level'] <= $level+1 && strnatcmp(utf8_encodeFN($data[$pos]['id']), utf8_encodeFN($tmp_ns)) > 0)) {
1726                array_splice($data, $pos, 0, array(array('level' => $level+1, 'id' => $tmp_ns, 'open' => 'true')));
1727                break;
1728            }
1729            ++$pos;
1730        }
1731    }
1732
1733    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
1734}
1735
1736/**
1737 * Userfunction for html_buildlist
1738 *
1739 * Prints a media namespace tree item
1740 *
1741 * @author Andreas Gohr <andi@splitbrain.org>
1742 */
1743function media_nstree_item($item){
1744    global $INPUT;
1745    $pos   = strrpos($item['id'], ':');
1746    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
1747    if(!$item['label']) $item['label'] = $label;
1748
1749    $ret  = '';
1750    if (!($INPUT->str('do') == 'media'))
1751    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
1752    else $ret .= '<a href="'.media_managerURL(array('ns' => idfilter($item['id'], false), 'tab_files' => 'files'))
1753        .'" class="idx_dir">';
1754    $ret .= $item['label'];
1755    $ret .= '</a>';
1756    return $ret;
1757}
1758
1759/**
1760 * Userfunction for html_buildlist
1761 *
1762 * Prints a media namespace tree item opener
1763 *
1764 * @author Andreas Gohr <andi@splitbrain.org>
1765 */
1766function media_nstree_li($item){
1767    $class='media level'.$item['level'];
1768    if($item['open']){
1769        $class .= ' open';
1770        $img   = DOKU_BASE.'lib/images/minus.gif';
1771        $alt   = '−';
1772    }else{
1773        $class .= ' closed';
1774        $img   = DOKU_BASE.'lib/images/plus.gif';
1775        $alt   = '+';
1776    }
1777    // TODO: only deliver an image if it actually has a subtree...
1778    return '<li class="'.$class.'">'.
1779        '<img src="'.$img.'" alt="'.$alt.'" />';
1780}
1781
1782/**
1783 * Resizes the given image to the given size
1784 *
1785 * @author  Andreas Gohr <andi@splitbrain.org>
1786 */
1787function media_resize_image($file, $ext, $w, $h=0){
1788    global $conf;
1789
1790    $info = @getimagesize($file); //get original size
1791    if($info == false) return $file; // that's no image - it's a spaceship!
1792
1793    if(!$h) $h = round(($w * $info[1]) / $info[0]);
1794
1795    // we wont scale up to infinity
1796    if($w > 2000 || $h > 2000) return $file;
1797
1798    //cache
1799    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
1800    $mtime = @filemtime($local); // 0 if not exists
1801
1802    if( $mtime > filemtime($file) ||
1803            media_resize_imageIM($ext,$file,$info[0],$info[1],$local,$w,$h) ||
1804            media_resize_imageGD($ext,$file,$info[0],$info[1],$local,$w,$h) ){
1805        if($conf['fperm']) chmod($local, $conf['fperm']);
1806        return $local;
1807    }
1808    //still here? resizing failed
1809    return $file;
1810}
1811
1812/**
1813 * Crops the given image to the wanted ratio, then calls media_resize_image to scale it
1814 * to the wanted size
1815 *
1816 * Crops are centered horizontally but prefer the upper third of an vertical
1817 * image because most pics are more interesting in that area (rule of thirds)
1818 *
1819 * @author  Andreas Gohr <andi@splitbrain.org>
1820 */
1821function media_crop_image($file, $ext, $w, $h=0){
1822    global $conf;
1823
1824    if(!$h) $h = $w;
1825    $info = @getimagesize($file); //get original size
1826    if($info == false) return $file; // that's no image - it's a spaceship!
1827
1828    // calculate crop size
1829    $fr = $info[0]/$info[1];
1830    $tr = $w/$h;
1831    if($tr >= 1){
1832        if($tr > $fr){
1833            $cw = $info[0];
1834            $ch = (int) $info[0]/$tr;
1835        }else{
1836            $cw = (int) $info[1]*$tr;
1837            $ch = $info[1];
1838        }
1839    }else{
1840        if($tr < $fr){
1841            $cw = (int) $info[1]*$tr;
1842            $ch = $info[1];
1843        }else{
1844            $cw = $info[0];
1845            $ch = (int) $info[0]/$tr;
1846        }
1847    }
1848    // calculate crop offset
1849    $cx = (int) ($info[0]-$cw)/2;
1850    $cy = (int) ($info[1]-$ch)/3;
1851
1852    //cache
1853    $local = getCacheName($file,'.media.'.$cw.'x'.$ch.'.crop.'.$ext);
1854    $mtime = @filemtime($local); // 0 if not exists
1855
1856    if( $mtime > @filemtime($file) ||
1857            media_crop_imageIM($ext,$file,$info[0],$info[1],$local,$cw,$ch,$cx,$cy) ||
1858            media_resize_imageGD($ext,$file,$cw,$ch,$local,$cw,$ch,$cx,$cy) ){
1859        if($conf['fperm']) chmod($local, $conf['fperm']);
1860        return media_resize_image($local,$ext, $w, $h);
1861    }
1862
1863    //still here? cropping failed
1864    return media_resize_image($file,$ext, $w, $h);
1865}
1866
1867/**
1868 * Download a remote file and return local filename
1869 *
1870 * returns false if download fails. Uses cached file if available and
1871 * wanted
1872 *
1873 * @author  Andreas Gohr <andi@splitbrain.org>
1874 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
1875 */
1876function media_get_from_URL($url,$ext,$cache){
1877    global $conf;
1878
1879    // if no cache or fetchsize just redirect
1880    if ($cache==0)           return false;
1881    if (!$conf['fetchsize']) return false;
1882
1883    $local = getCacheName(strtolower($url),".media.$ext");
1884    $mtime = @filemtime($local); // 0 if not exists
1885
1886    //decide if download needed:
1887    if( ($mtime == 0) ||                           // cache does not exist
1888            ($cache != -1 && $mtime < time()-$cache)   // 'recache' and cache has expired
1889      ){
1890        if(media_image_download($url,$local)){
1891            return $local;
1892        }else{
1893            return false;
1894        }
1895    }
1896
1897    //if cache exists use it else
1898    if($mtime) return $local;
1899
1900    //else return false
1901    return false;
1902}
1903
1904/**
1905 * Download image files
1906 *
1907 * @author Andreas Gohr <andi@splitbrain.org>
1908 */
1909function media_image_download($url,$file){
1910    global $conf;
1911    $http = new DokuHTTPClient();
1912    $http->keep_alive = false; // we do single ops here, no need for keep-alive
1913
1914    $http->max_bodysize = $conf['fetchsize'];
1915    $http->timeout = 25; //max. 25 sec
1916    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
1917
1918    $data = $http->get($url);
1919    if(!$data) return false;
1920
1921    $fileexists = @file_exists($file);
1922    $fp = @fopen($file,"w");
1923    if(!$fp) return false;
1924    fwrite($fp,$data);
1925    fclose($fp);
1926    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
1927
1928    // check if it is really an image
1929    $info = @getimagesize($file);
1930    if(!$info){
1931        @unlink($file);
1932        return false;
1933    }
1934
1935    return true;
1936}
1937
1938/**
1939 * resize images using external ImageMagick convert program
1940 *
1941 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
1942 * @author Andreas Gohr <andi@splitbrain.org>
1943 */
1944function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
1945    global $conf;
1946
1947    // check if convert is configured
1948    if(!$conf['im_convert']) return false;
1949
1950    // prepare command
1951    $cmd  = $conf['im_convert'];
1952    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
1953    if ($ext == 'jpg' || $ext == 'jpeg') {
1954        $cmd .= ' -quality '.$conf['jpg_quality'];
1955    }
1956    $cmd .= " $from $to";
1957
1958    @exec($cmd,$out,$retval);
1959    if ($retval == 0) return true;
1960    return false;
1961}
1962
1963/**
1964 * crop images using external ImageMagick convert program
1965 *
1966 * @author Andreas Gohr <andi@splitbrain.org>
1967 */
1968function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
1969    global $conf;
1970
1971    // check if convert is configured
1972    if(!$conf['im_convert']) return false;
1973
1974    // prepare command
1975    $cmd  = $conf['im_convert'];
1976    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
1977    if ($ext == 'jpg' || $ext == 'jpeg') {
1978        $cmd .= ' -quality '.$conf['jpg_quality'];
1979    }
1980    $cmd .= " $from $to";
1981
1982    @exec($cmd,$out,$retval);
1983    if ($retval == 0) return true;
1984    return false;
1985}
1986
1987/**
1988 * resize or crop images using PHP's libGD support
1989 *
1990 * @author Andreas Gohr <andi@splitbrain.org>
1991 * @author Sebastian Wienecke <s_wienecke@web.de>
1992 */
1993function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
1994    global $conf;
1995
1996    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
1997
1998    // check available memory
1999    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
2000        return false;
2001    }
2002
2003    // create an image of the given filetype
2004    if ($ext == 'jpg' || $ext == 'jpeg'){
2005        if(!function_exists("imagecreatefromjpeg")) return false;
2006        $image = @imagecreatefromjpeg($from);
2007    }elseif($ext == 'png') {
2008        if(!function_exists("imagecreatefrompng")) return false;
2009        $image = @imagecreatefrompng($from);
2010
2011    }elseif($ext == 'gif') {
2012        if(!function_exists("imagecreatefromgif")) return false;
2013        $image = @imagecreatefromgif($from);
2014    }
2015    if(!$image) return false;
2016
2017    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
2018        $newimg = @imagecreatetruecolor ($to_w, $to_h);
2019    }
2020    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
2021    if(!$newimg){
2022        imagedestroy($image);
2023        return false;
2024    }
2025
2026    //keep png alpha channel if possible
2027    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
2028        imagealphablending($newimg, false);
2029        imagesavealpha($newimg,true);
2030    }
2031
2032    //keep gif transparent color if possible
2033    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
2034        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
2035            $transcolorindex = @imagecolortransparent($image);
2036            if($transcolorindex >= 0 ) { //transparent color exists
2037                $transcolor = @imagecolorsforindex($image, $transcolorindex);
2038                $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
2039                @imagefill($newimg, 0, 0, $transcolorindex);
2040                @imagecolortransparent($newimg, $transcolorindex);
2041            }else{ //filling with white
2042                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2043                @imagefill($newimg, 0, 0, $whitecolorindex);
2044            }
2045        }else{ //filling with white
2046            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2047            @imagefill($newimg, 0, 0, $whitecolorindex);
2048        }
2049    }
2050
2051    //try resampling first
2052    if(function_exists("imagecopyresampled")){
2053        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
2054            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2055        }
2056    }else{
2057        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2058    }
2059
2060    $okay = false;
2061    if ($ext == 'jpg' || $ext == 'jpeg'){
2062        if(!function_exists('imagejpeg')){
2063            $okay = false;
2064        }else{
2065            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
2066        }
2067    }elseif($ext == 'png') {
2068        if(!function_exists('imagepng')){
2069            $okay = false;
2070        }else{
2071            $okay =  imagepng($newimg, $to);
2072        }
2073    }elseif($ext == 'gif') {
2074        if(!function_exists('imagegif')){
2075            $okay = false;
2076        }else{
2077            $okay = imagegif($newimg, $to);
2078        }
2079    }
2080
2081    // destroy GD image ressources
2082    if($image) imagedestroy($image);
2083    if($newimg) imagedestroy($newimg);
2084
2085    return $okay;
2086}
2087
2088/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
2089