xref: /dokuwiki/inc/media.php (revision 2c961e6163b23ef3f1d93b1b0c23b214f3aeb358) 
1<?php
2/**
3 * All output and handler function needed for the media management popup
4 *
5 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author     Andreas Gohr <andi@splitbrain.org>
7 */
8
9if(!defined('DOKU_INC')) die('meh.');
10if(!defined('NL')) define('NL',"\n");
11
12/**
13 * Lists pages which currently use a media file selected for deletion
14 *
15 * References uses the same visual as search results and share
16 * their CSS tags except pagenames won't be links.
17 *
18 * @author Matthias Grimm <matthiasgrimm@users.sourceforge.net>
19 */
20function media_filesinuse($data,$id){
21    global $lang;
22    echo '<h1>'.$lang['reference'].' <code>'.hsc(noNS($id)).'</code></h1>';
23    echo '<p>'.hsc($lang['ref_inuse']).'</p>';
24
25    $hidden=0; //count of hits without read permission
26    foreach($data as $row){
27        if(auth_quickaclcheck($row) >= AUTH_READ && isVisiblePage($row)){
28            echo '<div class="search_result">';
29            echo '<span class="mediaref_ref">'.hsc($row).'</span>';
30            echo '</div>';
31        }else
32            $hidden++;
33    }
34    if ($hidden){
35        print '<div class="mediaref_hidden">'.$lang['ref_hidden'].'</div>';
36    }
37}
38
39/**
40 * Handles the saving of image meta data
41 *
42 * @author Andreas Gohr <andi@splitbrain.org>
43 * @author Kate Arzamastseva <pshns@ukr.net>
44 */
45function media_metasave($id,$auth,$data){
46    if($auth < AUTH_UPLOAD) return false;
47    if(!checkSecurityToken()) return false;
48    global $lang;
49    global $conf;
50    $src = mediaFN($id);
51
52    $meta = new JpegMeta($src);
53    $meta->_parseAll();
54
55    foreach($data as $key => $val){
56        $val=trim($val);
57        if(empty($val)){
58            $meta->deleteField($key);
59        }else{
60            $meta->setField($key,$val);
61        }
62    }
63
64    $old = @filemtime($src);
65    if(!@file_exists(mediaFN($id, $old)) && @file_exists($src)) {
66        // add old revision to the attic
67        media_saveOldRevision($id);
68    }
69
70    if($meta->save()){
71        if($conf['fperm']) chmod($src, $conf['fperm']);
72
73        $new = @filemtime($src);
74        // add a log entry to the media changelog
75        addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT, $lang['media_meta_edited']);
76
77        msg($lang['metasaveok'],1);
78        return $id;
79    }else{
80        msg($lang['metasaveerr'],-1);
81        return false;
82    }
83}
84
85/**
86 * Display the form to edit image meta data
87 *
88 * @author Andreas Gohr <andi@splitbrain.org>
89 * @author Kate Arzamastseva <pshns@ukr.net>
90 */
91function media_metaform($id,$auth){
92    global $lang, $config_cascade;
93
94    if($auth < AUTH_UPLOAD) {
95        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
96        return false;
97    }
98
99    // load the field descriptions
100    static $fields = null;
101    if(is_null($fields)){
102        $config_files = getConfigFiles('mediameta');
103        foreach ($config_files as $config_file) {
104            if(@file_exists($config_file)) include($config_file);
105        }
106    }
107
108    $src = mediaFN($id);
109
110    // output
111    $form = new Doku_Form(array('action' => media_managerURL(array('tab_details' => 'view')),
112                                'class' => 'meta'));
113    $form->addHidden('img', $id);
114    $form->addHidden('mediado', 'save');
115    foreach($fields as $key => $field){
116        // get current value
117        if (empty($field[0])) continue;
118        $tags = array($field[0]);
119        if(is_array($field[3])) $tags = array_merge($tags,$field[3]);
120        $value = tpl_img_getTag($tags,'',$src);
121        $value = cleanText($value);
122
123        // prepare attributes
124        $p = array();
125        $p['class'] = 'edit';
126        $p['id']    = 'meta__'.$key;
127        $p['name']  = 'meta['.$field[0].']';
128        $p_attrs    = array('class' => 'edit');
129
130        $form->addElement('<div class="row">');
131        if($field[2] == 'text'){
132            $form->addElement(form_makeField('text', $p['name'], $value, ($lang[$field[1]]) ? $lang[$field[1]] : $field[1] . ':', $p['id'], $p['class'], $p_attrs));
133        }else{
134            $att = buildAttributes($p);
135            $form->addElement('<label for="meta__'.$key.'">'.$lang[$field[1]].'</label>');
136            $form->addElement("<textarea $att rows=\"6\" cols=\"50\">".formText($value).'</textarea>');
137        }
138        $form->addElement('</div>'.NL);
139    }
140    $form->addElement('<div class="buttons">');
141    $form->addElement(form_makeButton('submit', '', $lang['btn_save'], array('accesskey' => 's', 'name' => 'mediado[save]')));
142    $form->addElement('</div>'.NL);
143    $form->printForm();
144}
145
146/**
147 * Convenience function to check if a media file is still in use
148 *
149 * @author Michael Klier <chi@chimeric.de>
150 */
151function media_inuse($id) {
152    global $conf;
153    $mediareferences = array();
154    if($conf['refcheck']){
155        $mediareferences = ft_mediause($id,$conf['refshow']);
156        if(!count($mediareferences)) {
157            return false;
158        } else {
159            return $mediareferences;
160        }
161    } else {
162        return false;
163    }
164}
165
166define('DOKU_MEDIA_DELETED', 1);
167define('DOKU_MEDIA_NOT_AUTH', 2);
168define('DOKU_MEDIA_INUSE', 4);
169define('DOKU_MEDIA_EMPTY_NS', 8);
170
171/**
172 * Handles media file deletions
173 *
174 * If configured, checks for media references before deletion
175 *
176 * @author Andreas Gohr <andi@splitbrain.org>
177 * @return int One of: 0,
178                       DOKU_MEDIA_DELETED,
179                       DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS,
180                       DOKU_MEDIA_NOT_AUTH,
181                       DOKU_MEDIA_INUSE
182 */
183function media_delete($id,$auth){
184    global $lang;
185    if($auth < AUTH_DELETE) return DOKU_MEDIA_NOT_AUTH;
186    if(media_inuse($id)) return DOKU_MEDIA_INUSE;
187
188    $file = mediaFN($id);
189
190    // trigger an event - MEDIA_DELETE_FILE
191    $data['id']   = $id;
192    $data['name'] = basename($file);
193    $data['path'] = $file;
194    $data['size'] = (@file_exists($file)) ? filesize($file) : 0;
195
196    $data['unl'] = false;
197    $data['del'] = false;
198    $evt = new Doku_Event('MEDIA_DELETE_FILE',$data);
199    if ($evt->advise_before()) {
200        $old = @filemtime($file);
201        if(!@file_exists(mediaFN($id, $old)) && @file_exists($file)) {
202            // add old revision to the attic
203            media_saveOldRevision($id);
204        }
205
206        $data['unl'] = @unlink($file);
207        if($data['unl']){
208            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_DELETE, $lang['deleted']);
209            $data['del'] = io_sweepNS($id,'mediadir');
210        }
211    }
212    $evt->advise_after();
213    unset($evt);
214
215    if($data['unl'] && $data['del']){
216        return DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS;
217    }
218
219    return $data['unl'] ? DOKU_MEDIA_DELETED : 0;
220}
221
222/**
223 * Handle file uploads via XMLHttpRequest
224 *
225 * @return mixed false on error, id of the new file on success
226 */
227function media_upload_xhr($ns,$auth){
228    if(!checkSecurityToken()) return false;
229
230    $id = $_GET['qqfile'];
231    list($ext,$mime,$dl) = mimetype($id);
232    $input = fopen("php://input", "r");
233    $temp = tmpfile();
234    $realSize = stream_copy_to_stream($input, $temp);
235    fclose($input);
236    if ($realSize != (int)$_SERVER["CONTENT_LENGTH"]) return false;
237    if (!($tmp = io_mktmpdir())) return false;
238    $path = $tmp.'/'.md5($id);
239    $target = fopen($path, "w");
240    fseek($temp, 0, SEEK_SET);
241    stream_copy_to_stream($temp, $target);
242    fclose($target);
243    $res = media_save(
244        array('name' => $path,
245            'mime' => $mime,
246            'ext'  => $ext),
247        $ns.':'.$id,
248        (($_REQUEST['ow'] == 'checked') ? true : false),
249        $auth,
250        'copy'
251    );
252    unlink($path);
253    if ($tmp) dir_delete($tmp);
254    if (is_array($res)) {
255        msg($res[0], $res[1]);
256        return false;
257    }
258    return $res;
259}
260
261/**
262 * Handles media file uploads
263 *
264 * @author Andreas Gohr <andi@splitbrain.org>
265 * @author Michael Klier <chi@chimeric.de>
266 * @return mixed false on error, id of the new file on success
267 */
268function media_upload($ns,$auth,$file=false){
269    if(!checkSecurityToken()) return false;
270    global $lang;
271
272    // get file and id
273    $id   = $_POST['mediaid'];
274    if (!$file) $file = $_FILES['upload'];
275    if(empty($id)) $id = $file['name'];
276
277    // check for errors (messages are done in lib/exe/mediamanager.php)
278    if($file['error']) return false;
279
280    // check extensions
281    list($fext,$fmime,$dl) = mimetype($file['name']);
282    list($iext,$imime,$dl) = mimetype($id);
283    if($fext && !$iext){
284        // no extension specified in id - read original one
285        $id   .= '.'.$fext;
286        $imime = $fmime;
287    }elseif($fext && $fext != $iext){
288        // extension was changed, print warning
289        msg(sprintf($lang['mediaextchange'],$fext,$iext));
290    }
291
292    $res = media_save(array('name' => $file['tmp_name'],
293                            'mime' => $imime,
294                            'ext'  => $iext), $ns.':'.$id,
295                      $_REQUEST['ow'], $auth, 'move_uploaded_file');
296    if (is_array($res)) {
297        msg($res[0], $res[1]);
298        return false;
299    }
300    return $res;
301}
302
303/**
304 * This generates an action event and delegates to _media_upload_action().
305 * Action plugins are allowed to pre/postprocess the uploaded file.
306 * (The triggered event is preventable.)
307 *
308 * Event data:
309 * $data[0]     fn_tmp: the temporary file name (read from $_FILES)
310 * $data[1]     fn: the file name of the uploaded file
311 * $data[2]     id: the future directory id of the uploaded file
312 * $data[3]     imime: the mimetype of the uploaded file
313 * $data[4]     overwrite: if an existing file is going to be overwritten
314 *
315 * @triggers MEDIA_UPLOAD_FINISH
316 */
317function media_save($file, $id, $ow, $auth, $move) {
318    if($auth < AUTH_UPLOAD) {
319        return array("You don't have permissions to upload files.", -1);
320    }
321
322    if (!isset($file['mime']) || !isset($file['ext'])) {
323        list($ext, $mime) = mimetype($id);
324        if (!isset($file['mime'])) {
325            $file['mime'] = $mime;
326        }
327        if (!isset($file['ext'])) {
328            $file['ext'] = $ext;
329        }
330    }
331
332    global $lang, $conf;
333
334    // get filename
335    $id   = cleanID($id,false,true);
336    $fn   = mediaFN($id);
337
338    // get filetype regexp
339    $types = array_keys(getMimeTypes());
340    $types = array_map(create_function('$q','return preg_quote($q,"/");'),$types);
341    $regex = join('|',$types);
342
343    // because a temp file was created already
344    if(!preg_match('/\.('.$regex.')$/i',$fn)) {
345        return array($lang['uploadwrong'],-1);
346    }
347
348    //check for overwrite
349    $overwrite = @file_exists($fn);
350    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
351    if($overwrite && (!$ow || $auth < $auth_ow)) {
352        return array($lang['uploadexist'], 0);
353    }
354    // check for valid content
355    $ok = media_contentcheck($file['name'], $file['mime']);
356    if($ok == -1){
357        return array(sprintf($lang['uploadbadcontent'],'.' . $file['ext']),-1);
358    }elseif($ok == -2){
359        return array($lang['uploadspam'],-1);
360    }elseif($ok == -3){
361        return array($lang['uploadxss'],-1);
362    }
363
364    // prepare event data
365    $data[0] = $file['name'];
366    $data[1] = $fn;
367    $data[2] = $id;
368    $data[3] = $file['mime'];
369    $data[4] = $overwrite;
370    $data[5] = $move;
371
372    // trigger event
373    return trigger_event('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
374}
375
376/**
377 * Callback adapter for media_upload_finish()
378 * @author Michael Klier <chi@chimeric.de>
379 */
380function _media_upload_action($data) {
381    // fixme do further sanity tests of given data?
382    if(is_array($data) && count($data)===6) {
383        return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
384    } else {
385        return false; //callback error
386    }
387}
388
389/**
390 * Saves an uploaded media file
391 *
392 * @author Andreas Gohr <andi@splitbrain.org>
393 * @author Michael Klier <chi@chimeric.de>
394 * @author Kate Arzamastseva <pshns@ukr.net>
395 */
396function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') {
397    global $conf;
398    global $lang;
399    global $REV;
400
401    $old = @filemtime($fn);
402    if(!@file_exists(mediaFN($id, $old)) && @file_exists($fn)) {
403        // add old revision to the attic if missing
404        media_saveOldRevision($id);
405    }
406
407    // prepare directory
408    io_createNamespace($id, 'media');
409
410    if($move($fn_tmp, $fn)) {
411        @clearstatcache(true,$fn);
412        $new = @filemtime($fn);
413        // Set the correct permission here.
414        // Always chmod media because they may be saved with different permissions than expected from the php umask.
415        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
416        chmod($fn, $conf['fmode']);
417        msg($lang['uploadsucc'],1);
418        media_notify($id,$fn,$imime,$old);
419        // add a log entry to the media changelog
420        if ($REV){
421            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_REVERT, $lang['restored'], $REV);
422        } elseif ($overwrite) {
423            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT);
424        } else {
425            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
426        }
427        return $id;
428    }else{
429        return array($lang['uploadfail'],-1);
430    }
431}
432
433/**
434 * Moves the current version of media file to the media_attic
435 * directory
436 *
437 * @author Kate Arzamastseva <pshns@ukr.net>
438 * @param string $id
439 * @return int - revision date
440 */
441function media_saveOldRevision($id){
442    global $conf, $lang;
443
444    $oldf = mediaFN($id);
445    if(!@file_exists($oldf)) return '';
446    $date = filemtime($oldf);
447    if (!$conf['mediarevisions']) return $date;
448
449    if (!getRevisionInfo($id, $date, 8192, true)) {
450        // there was an external edit,
451        // there is no log entry for current version of file
452        if (!@file_exists(mediaMetaFN($id,'.changes'))) {
453            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
454        } else {
455            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_EDIT);
456        }
457    }
458
459    $newf = mediaFN($id,$date);
460    io_makeFileDir($newf);
461    if(copy($oldf, $newf)) {
462        // Set the correct permission here.
463        // Always chmod media because they may be saved with different permissions than expected from the php umask.
464        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
465        chmod($newf, $conf['fmode']);
466    }
467    return $date;
468}
469
470/**
471 * This function checks if the uploaded content is really what the
472 * mimetype says it is. We also do spam checking for text types here.
473 *
474 * We need to do this stuff because we can not rely on the browser
475 * to do this check correctly. Yes, IE is broken as usual.
476 *
477 * @author Andreas Gohr <andi@splitbrain.org>
478 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
479 * @fixme  check all 26 magic IE filetypes here?
480 */
481function media_contentcheck($file,$mime){
482    global $conf;
483    if($conf['iexssprotect']){
484        $fh = @fopen($file, 'rb');
485        if($fh){
486            $bytes = fread($fh, 256);
487            fclose($fh);
488            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
489                return -3;
490            }
491        }
492    }
493    if(substr($mime,0,6) == 'image/'){
494        $info = @getimagesize($file);
495        if($mime == 'image/gif' && $info[2] != 1){
496            return -1;
497        }elseif($mime == 'image/jpeg' && $info[2] != 2){
498            return -1;
499        }elseif($mime == 'image/png' && $info[2] != 3){
500            return -1;
501        }
502        # fixme maybe check other images types as well
503    }elseif(substr($mime,0,5) == 'text/'){
504        global $TEXT;
505        $TEXT = io_readFile($file);
506        if(checkwordblock()){
507            return -2;
508        }
509    }
510    return 0;
511}
512
513/**
514 * Send a notify mail on uploads
515 *
516 * @author Andreas Gohr <andi@splitbrain.org>
517 */
518function media_notify($id,$file,$mime,$old_rev=false){
519    global $lang;
520    global $conf;
521    global $INFO;
522    if(empty($conf['notify'])) return; //notify enabled?
523
524    $ip = clientIP();
525
526    $text = rawLocale('uploadmail');
527    $text = str_replace('@DATE@',dformat(),$text);
528    $text = str_replace('@BROWSER@',$_SERVER['HTTP_USER_AGENT'],$text);
529    $text = str_replace('@IPADDRESS@',$ip,$text);
530    $text = str_replace('@HOSTNAME@',gethostsbyaddrs($ip),$text);
531    $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
532    $text = str_replace('@USER@',$_SERVER['REMOTE_USER'],$text);
533    $text = str_replace('@MIME@',$mime,$text);
534    $text = str_replace('@MEDIA@',ml($id,'',true,'&',true),$text);
535    $text = str_replace('@SIZE@',filesize_h(filesize($file)),$text);
536    if ($old_rev && $conf['mediarevisions']) {
537        $text = str_replace('@OLD@', ml($id, "rev=$old_rev", true, '&', true), $text);
538    } else {
539        $text = str_replace('@OLD@', '', $text);
540    }
541
542    if(empty($conf['mailprefix'])) {
543        $subject = '['.$conf['title'].'] '.$lang['mail_upload'].' '.$id;
544    } else {
545        $subject = '['.$conf['mailprefix'].'] '.$lang['mail_upload'].' '.$id;
546    }
547
548    mail_send($conf['notify'],$subject,$text,$conf['mailfrom']);
549}
550
551/**
552 * List all files in a given Media namespace
553 */
554function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false,$sort=false){
555    global $conf;
556    global $lang;
557    $ns = cleanID($ns);
558
559    // check auth our self if not given (needed for ajax calls)
560    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
561
562    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
563
564    if($auth < AUTH_READ){
565        // FIXME: print permission warning here instead?
566        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
567    }else{
568        if (!$fullscreenview) media_uploadform($ns, $auth);
569
570        $dir = utf8_encodeFN(str_replace(':','/',$ns));
571        $data = array();
572        search($data,$conf['mediadir'],'search_media',
573                array('showmsg'=>true,'depth'=>1),$dir,1,$sort);
574
575        if(!count($data)){
576            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
577        }else {
578            if ($fullscreenview) {
579                echo '<ul class="' . _media_get_list_type() . '">';
580            }
581            foreach($data as $item){
582                if (!$fullscreenview) {
583                    media_printfile($item,$auth,$jump);
584                } else {
585                    media_printfile_thumbs($item,$auth,$jump);
586                }
587            }
588            if ($fullscreenview) echo '</ul>'.NL;
589        }
590    }
591    if (!$fullscreenview) media_searchform($ns);
592}
593
594/**
595 * Prints tabs for files list actions
596 *
597 * @author Kate Arzamastseva <pshns@ukr.net>
598 * @author Adrian Lang <mail@adrianlang.de>
599 *
600 * @param string $selected_tab - opened tab
601 */
602
603function media_tabs_files($selected_tab = ''){
604    global $lang;
605    $tabs = array();
606    foreach(array('files'  => 'mediaselect',
607                  'upload' => 'media_uploadtab',
608                  'search' => 'media_searchtab') as $tab => $caption) {
609        $tabs[$tab] = array('href'    => media_managerURL(array('tab_files' => $tab), '&'),
610                            'caption' => $lang[$caption]);
611    }
612
613    html_tabs($tabs, $selected_tab);
614}
615
616/**
617 * Prints tabs for files details actions
618 *
619 * @author Kate Arzamastseva <pshns@ukr.net>
620 * @param string $selected_tab - opened tab
621 */
622function media_tabs_details($image, $selected_tab = ''){
623    global $lang, $conf;
624
625    $tabs = array();
626    $tabs['view'] = array('href'    => media_managerURL(array('tab_details' => 'view'), '&'),
627                          'caption' => $lang['media_viewtab']);
628
629    list($ext, $mime) = mimetype($image);
630    if ($mime == 'image/jpeg' && @file_exists(mediaFN($image))) {
631        $tabs['edit'] = array('href'    => media_managerURL(array('tab_details' => 'edit'), '&'),
632                              'caption' => $lang['media_edittab']);
633    }
634    if ($conf['mediarevisions']) {
635        $tabs['history'] = array('href'    => media_managerURL(array('tab_details' => 'history'), '&'),
636                                 'caption' => $lang['media_historytab']);
637    }
638
639    html_tabs($tabs, $selected_tab);
640}
641
642/**
643 * Prints options for the tab that displays a list of all files
644 *
645 * @author Kate Arzamastseva <pshns@ukr.net>
646 */
647function media_tab_files_options(){
648    global $lang, $NS;
649    $form = new Doku_Form(array('class' => 'options', 'method' => 'get',
650                                'action' => wl($ID)));
651    $media_manager_params = media_managerURL(array(), '', false, true);
652    foreach($media_manager_params as $pKey => $pVal){
653        $form->addHidden($pKey, $pVal);
654    }
655    $form->addHidden('sectok', null);
656    if (isset($_REQUEST['q'])) {
657        $form->addHidden('q', $_REQUEST['q']);
658    }
659    $form->addElement('<ul>'.NL);
660    foreach(array('list' => array('listType', array('thumbs', 'rows')),
661                  'sort' => array('sortBy', array('name', 'date')))
662            as $group => $content) {
663        $checked = "_media_get_${group}_type";
664        $checked = $checked();
665
666        $form->addElement('<li class="' . $content[0] . '">');
667        foreach($content[1] as $option) {
668            $attrs = array();
669            if ($checked == $option) {
670                $attrs['checked'] = 'checked';
671            }
672            $form->addElement(form_makeRadioField($group, $option,
673                                       $lang['media_' . $group . '_' . $option],
674                                                  $content[0] . '__' . $option,
675                                                  $option, $attrs));
676        }
677        $form->addElement('</li>'.NL);
678    }
679    $form->addElement('<li>');
680    $form->addElement(form_makeButton('submit', '', $lang['btn_apply']));
681    $form->addElement('</li>'.NL);
682    $form->addElement('</ul>'.NL);
683    $form->printForm();
684}
685
686/**
687 * Returns type of sorting for the list of files in media manager
688 *
689 * @author Kate Arzamastseva <pshns@ukr.net>
690 * @return string - sort type
691 */
692function _media_get_sort_type() {
693    return _media_get_display_param('sort', array('default' => 'name', 'date'));
694}
695
696function _media_get_list_type() {
697    return _media_get_display_param('list', array('default' => 'thumbs', 'rows'));
698}
699
700function _media_get_display_param($param, $values) {
701    if (isset($_REQUEST[$param]) && in_array($_REQUEST[$param], $values)) {
702        // FIXME: Set cookie
703        return $_REQUEST[$param];
704    } else {
705        $val = get_doku_pref($param, $values['default']);
706        if (!in_array($val, $values)) {
707            $val = $values['default'];
708        }
709        return $val;
710    }
711}
712
713/**
714 * Prints tab that displays a list of all files
715 *
716 * @author Kate Arzamastseva <pshns@ukr.net>
717 */
718function media_tab_files($ns,$auth=null,$jump='') {
719    global $lang;
720    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
721
722    if($auth < AUTH_READ){
723        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
724    }else{
725        media_filelist($ns,$auth,$jump,true,_media_get_sort_type());
726    }
727}
728
729/**
730 * Prints tab that displays uploading form
731 *
732 * @author Kate Arzamastseva <pshns@ukr.net>
733 */
734function media_tab_upload($ns,$auth=null,$jump='') {
735    global $lang;
736    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
737
738    echo '<div class="upload">'.NL;
739    if ($auth >= AUTH_UPLOAD) {
740        echo '<p>' . $lang['mediaupload'] . '</p>';
741    }
742    media_uploadform($ns, $auth, true);
743    echo '</div>'.NL;
744}
745
746/**
747 * Prints tab that displays search form
748 *
749 * @author Kate Arzamastseva <pshns@ukr.net>
750 */
751function media_tab_search($ns,$auth=null) {
752    global $lang;
753
754    $do = $_REQUEST['mediado'];
755    $query = $_REQUEST['q'];
756    if (!$query) $query = '';
757    echo '<div class="search">'.NL;
758
759    media_searchform($ns, $query, true);
760    if ($do == 'searchlist') {
761        media_searchlist($query,$ns,$auth,true,_media_get_sort_type());
762    }
763    echo '</div>'.NL;
764}
765
766/**
767 * Prints tab that displays mediafile details
768 *
769 * @author Kate Arzamastseva <pshns@ukr.net>
770 */
771function media_tab_view($image, $ns, $auth=null, $rev=false) {
772    global $lang, $conf;
773    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
774
775    if ($image && $auth >= AUTH_READ) {
776        $meta = new JpegMeta(mediaFN($image, $rev));
777        media_preview($image, $auth, $rev, $meta);
778        media_preview_buttons($image, $auth, $rev);
779        media_details($image, $auth, $rev, $meta);
780
781    } else {
782        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
783    }
784}
785
786/**
787 * Prints tab that displays form for editing mediafile metadata
788 *
789 * @author Kate Arzamastseva <pshns@ukr.net>
790 */
791function media_tab_edit($image, $ns, $auth=null) {
792    global $lang;
793    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
794
795    if ($image) {
796        list($ext, $mime) = mimetype($image);
797        if ($mime == 'image/jpeg') media_metaform($image,$auth);
798    }
799}
800
801/**
802 * Prints tab that displays mediafile revisions
803 *
804 * @author Kate Arzamastseva <pshns@ukr.net>
805 */
806function media_tab_history($image, $ns, $auth=null) {
807    global $lang;
808    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
809    $do = $_REQUEST['mediado'];
810
811    if ($auth >= AUTH_READ && $image) {
812        if ($do == 'diff'){
813            media_diff($image, $ns, $auth);
814        } else {
815            $first = isset($_REQUEST['first']) ? intval($_REQUEST['first']) : 0;
816            html_revisions($first, $image);
817        }
818    } else {
819        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
820    }
821}
822
823/**
824 * Prints mediafile details
825 *
826 * @author Kate Arzamastseva <pshns@ukr.net>
827 */
828function media_preview($image, $auth, $rev=false, $meta=false) {
829
830    $size = media_image_preview_size($image, $rev, $meta);
831
832    if ($size) {
833        echo '<div class="image">';
834
835        $more = array();
836        if ($rev) {
837            $more['rev'] = $rev;
838        } else {
839            $t = @filemtime(mediaFN($image));
840            $more['t'] = $t;
841        }
842
843        $more['w'] = $size[0];
844        $more['h'] = $size[1];
845        $src = ml($image, $more);
846        echo '<img src="'.$src.'" alt="" style="max-width: '.$size[0].'px;" />';
847
848        echo '</div>'.NL;
849    }
850}
851
852/**
853 * Prints mediafile action buttons
854 *
855 * @author Kate Arzamastseva <pshns@ukr.net>
856 */
857function media_preview_buttons($image, $auth, $rev=false) {
858    global $lang, $conf;
859
860    echo '<ul class="actions">'.NL;
861
862    if($auth >= AUTH_DELETE && !$rev && @file_exists(mediaFN($image))){
863
864        // delete button
865        $form = new Doku_Form(array('id' => 'mediamanager__btn_delete',
866            'action'=>media_managerURL(array('delete' => $image), '&')));
867        $form->addElement(form_makeButton('submit','',$lang['btn_delete']));
868        echo '<li>';
869        $form->printForm();
870        echo '</li>'.NL;
871    }
872
873    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
874    if($auth >= $auth_ow && !$rev){
875
876        // upload new version button
877        $form = new Doku_Form(array('id' => 'mediamanager__btn_update',
878            'action'=>media_managerURL(array('image' => $image, 'mediado' => 'update'), '&')));
879        $form->addElement(form_makeButton('submit','',$lang['media_update']));
880        echo '<li>';
881        $form->printForm();
882        echo '</li>'.NL;
883    }
884
885    if($auth >= AUTH_UPLOAD && $rev && $conf['mediarevisions'] && @file_exists(mediaFN($image, $rev))){
886
887        // restore button
888        $form = new Doku_Form(array('id' => 'mediamanager__btn_restore',
889            'action'=>media_managerURL(array('image' => $image), '&')));
890        $form->addHidden('mediado','restore');
891        $form->addHidden('rev',$rev);
892        $form->addElement(form_makeButton('submit','',$lang['media_restore']));
893        echo '<li>';
894        $form->printForm();
895        echo '</li>'.NL;
896    }
897
898    echo '</ul>'.NL;
899}
900
901/**
902 * Returns image width and height for mediamanager preview panel
903 *
904 * @author Kate Arzamastseva <pshns@ukr.net>
905 * @param string $image
906 * @param int $rev
907 * @param JpegMeta $meta
908 * @return array
909 */
910function media_image_preview_size($image, $rev, $meta, $size = 500) {
911    if (!preg_match("/\.(jpe?g|gif|png)$/", $image) || !file_exists(mediaFN($image, $rev))) return false;
912
913    $info = getimagesize(mediaFN($image, $rev));
914    $w = (int) $info[0];
915    $h = (int) $info[1];
916
917    if($meta && ($w > $size || $h > $size)){
918        $ratio = $meta->getResizeRatio($size, $size);
919        $w = floor($w * $ratio);
920        $h = floor($h * $ratio);
921    }
922    return array($w, $h);
923}
924
925/**
926 * Returns the requested EXIF/IPTC tag from the image meta
927 *
928 * @author Kate Arzamastseva <pshns@ukr.net>
929 * @param array $tags
930 * @param JpegMeta $meta
931 * @param string $alt
932 * @return string
933 */
934function media_getTag($tags,$meta,$alt=''){
935    if($meta === false) return $alt;
936    $info = $meta->getField($tags);
937    if($info == false) return $alt;
938    return $info;
939}
940
941/**
942 * Returns mediafile tags
943 *
944 * @author Kate Arzamastseva <pshns@ukr.net>
945 * @param JpegMeta $meta
946 * @return array
947 */
948function media_file_tags($meta) {
949    global $config_cascade;
950
951    // load the field descriptions
952    static $fields = null;
953    if(is_null($fields)){
954        $config_files = getConfigFiles('mediameta');
955        foreach ($config_files as $config_file) {
956            if(@file_exists($config_file)) include($config_file);
957        }
958    }
959
960    $tags = array();
961
962    foreach($fields as $key => $tag){
963        $t = array();
964        if (!empty($tag[0])) $t = array($tag[0]);
965        if(is_array($tag[3])) $t = array_merge($t,$tag[3]);
966        $value = media_getTag($t, $meta);
967        $tags[] = array('tag' => $tag, 'value' => $value);
968    }
969
970    return $tags;
971}
972
973/**
974 * Prints mediafile tags
975 *
976 * @author Kate Arzamastseva <pshns@ukr.net>
977 */
978function media_details($image, $auth, $rev=false, $meta=false) {
979    global $lang;
980
981    if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev));
982    $tags = media_file_tags($meta);
983
984    echo '<dl>'.NL;
985    foreach($tags as $tag){
986        if ($tag['value']) {
987            $value = cleanText($tag['value']);
988            echo '<dt>'.$lang[$tag['tag'][1]].':</dt><dd>';
989            if ($tag['tag'][2] == 'date') echo dformat($value);
990            else echo hsc($value);
991            echo '</dd>'.NL;
992        }
993    }
994    echo '</dl>'.NL;
995}
996
997/**
998 * Shows difference between two revisions of file
999 *
1000 * @author Kate Arzamastseva <pshns@ukr.net>
1001 */
1002function media_diff($image, $ns, $auth, $fromajax = false) {
1003    global $lang;
1004    global $conf;
1005
1006    if ($auth < AUTH_READ || !$image || !$conf['mediarevisions']) return '';
1007
1008    $rev1 = (int) $_REQUEST['rev'];
1009
1010    if(is_array($_REQUEST['rev2'])){
1011        $rev1 = (int) $_REQUEST['rev2'][0];
1012        $rev2 = (int) $_REQUEST['rev2'][1];
1013
1014        if(!$rev1){
1015            $rev1 = $rev2;
1016            unset($rev2);
1017        }
1018    }else{
1019        $rev2 = (int) $_REQUEST['rev2'];
1020    }
1021
1022    if ($rev1 && !file_exists(mediaFN($image, $rev1))) $rev1 = false;
1023    if ($rev2 && !file_exists(mediaFN($image, $rev2))) $rev2 = false;
1024
1025    if($rev1 && $rev2){            // two specific revisions wanted
1026        // make sure order is correct (older on the left)
1027        if($rev1 < $rev2){
1028            $l_rev = $rev1;
1029            $r_rev = $rev2;
1030        }else{
1031            $l_rev = $rev2;
1032            $r_rev = $rev1;
1033        }
1034    }elseif($rev1){                // single revision given, compare to current
1035        $r_rev = '';
1036        $l_rev = $rev1;
1037    }else{                        // no revision was given, compare previous to current
1038        $r_rev = '';
1039        $revs = getRevisions($image, 0, 1, 8192, true);
1040        if (file_exists(mediaFN($image, $revs[0]))) {
1041            $l_rev = $revs[0];
1042        } else {
1043            $l_rev = '';
1044        }
1045    }
1046
1047    // prepare event data
1048    $data[0] = $image;
1049    $data[1] = $l_rev;
1050    $data[2] = $r_rev;
1051    $data[3] = $ns;
1052    $data[4] = $auth;
1053    $data[5] = $fromajax;
1054
1055    // trigger event
1056    return trigger_event('MEDIA_DIFF', $data, '_media_file_diff', true);
1057
1058}
1059
1060function _media_file_diff($data) {
1061    if(is_array($data) && count($data)===6) {
1062        return media_file_diff($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
1063    } else {
1064        return false;
1065    }
1066}
1067
1068/**
1069 * Shows difference between two revisions of image
1070 *
1071 * @author Kate Arzamastseva <pshns@ukr.net>
1072 */
1073function media_file_diff($image, $l_rev, $r_rev, $ns, $auth, $fromajax){
1074    global $lang, $config_cascade;
1075
1076    $l_meta = new JpegMeta(mediaFN($image, $l_rev));
1077    $r_meta = new JpegMeta(mediaFN($image, $r_rev));
1078
1079    $is_img = preg_match("/\.(jpe?g|gif|png)$/", $image);
1080    if ($is_img) {
1081        $l_size = media_image_preview_size($image, $l_rev, $l_meta);
1082        $r_size = media_image_preview_size($image, $r_rev, $r_meta);
1083        $is_img = ($l_size && $r_size && ($l_size[0] >= 30 || $r_size[0] >= 30));
1084
1085        $difftype = $_REQUEST['difftype'];
1086
1087        if (!$fromajax) {
1088            $form = new Doku_Form(array(
1089                'action' => media_managerURL(array(), '&'),
1090                'method' => 'get',
1091                'id' => 'mediamanager__form_diffview',
1092                'class' => 'diffView'
1093            ));
1094            $form->addHidden('sectok', null);
1095            $form->addElement('<input type="hidden" name="rev2[]" value="'.$l_rev.'" ></input>');
1096            $form->addElement('<input type="hidden" name="rev2[]" value="'.$r_rev.'" ></input>');
1097            $form->addHidden('mediado', 'diff');
1098            $form->printForm();
1099
1100            echo NL.'<div id="mediamanager__diff" >'.NL;
1101        }
1102
1103        if ($difftype == 'opacity' || $difftype == 'portions') {
1104            media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $difftype);
1105            if (!$fromajax) echo '</div>';
1106            return '';
1107        }
1108    }
1109
1110    list($l_head, $r_head) = html_diff_head($l_rev, $r_rev, $image, true);
1111
1112    ?>
1113    <table>
1114      <tr>
1115        <th><?php echo $l_head; ?></th>
1116        <th><?php echo $r_head; ?></th>
1117      </tr>
1118    <?php
1119
1120    echo '<tr class="image">';
1121    echo '<td>';
1122    media_preview($image, $auth, $l_rev, $l_meta);
1123    echo '</td>';
1124
1125    echo '<td>';
1126    media_preview($image, $auth, $r_rev, $r_meta);
1127    echo '</td>';
1128    echo '</tr>'.NL;
1129
1130    echo '<tr class="actions">';
1131    echo '<td>';
1132    media_preview_buttons($image, $auth, $l_rev);
1133    echo '</td>';
1134
1135    echo '<td>';
1136    media_preview_buttons($image, $auth, $r_rev);
1137    echo '</td>';
1138    echo '</tr>'.NL;
1139
1140    $l_tags = media_file_tags($l_meta);
1141    $r_tags = media_file_tags($r_meta);
1142    // FIXME r_tags-only stuff
1143    foreach ($l_tags as $key => $l_tag) {
1144        if ($l_tag['value'] != $r_tags[$key]['value']) {
1145            $r_tags[$key]['highlighted'] = true;
1146            $l_tags[$key]['highlighted'] = true;
1147        } else if (!$l_tag['value'] || !$r_tags[$key]['value']) {
1148            unset($r_tags[$key]);
1149            unset($l_tags[$key]);
1150        }
1151    }
1152
1153    echo '<tr>';
1154    foreach(array($l_tags,$r_tags) as $tags){
1155        echo '<td>'.NL;
1156
1157        echo '<dl class="img_tags">';
1158        foreach($tags as $tag){
1159            $value = cleanText($tag['value']);
1160            if (!$value) $value = '-';
1161            echo '<dt>'.$lang[$tag['tag'][1]].':</dt>';
1162            echo '<dd>';
1163            if ($tag['highlighted']) {
1164                echo '<strong>';
1165            }
1166            if ($tag['tag'][2] == 'date') echo dformat($value);
1167            else echo hsc($value);
1168            if ($tag['highlighted']) {
1169                echo '</strong>';
1170            }
1171            echo '</dd>';
1172        }
1173        echo '</dl>'.NL;
1174
1175        echo '</td>';
1176    }
1177    echo '</tr>'.NL;
1178
1179    echo '</table>'.NL;
1180
1181    if ($is_img && !$fromajax) echo '</div>';
1182}
1183
1184/**
1185 * Prints two images side by side
1186 * and slider
1187 *
1188 * @author Kate Arzamastseva <pshns@ukr.net>
1189 * @param string $image
1190 * @param int $l_rev
1191 * @param int $r_rev
1192 * @param array $l_size
1193 * @param array $r_size
1194 * @param string $type
1195 */
1196function media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $type) {
1197    if ($l_size != $r_size) {
1198        if ($r_size[0] > $l_size[0]) {
1199            $l_size = $r_size;
1200        }
1201    }
1202
1203    $l_more = array('rev' => $l_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1204    $r_more = array('rev' => $r_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1205
1206    $l_src = ml($image, $l_more);
1207    $r_src = ml($image, $r_more);
1208
1209    // slider
1210    echo '<div class="slider" style="max-width: '.($l_size[0]-20).'px;" ></div>'.NL;
1211
1212    // two images in divs
1213    echo '<div class="imageDiff ' . $type . '">'.NL;
1214    echo '<div class="image1" style="max-width: '.$l_size[0].'px;">';
1215    echo '<img src="'.$l_src.'" alt="" />';
1216    echo '</div>'.NL;
1217    echo '<div class="image2" style="max-width: '.$l_size[0].'px;">';
1218    echo '<img src="'.$r_src.'" alt="" />';
1219    echo '</div>'.NL;
1220    echo '</div>'.NL;
1221}
1222
1223/**
1224 * Restores an old revision of a media file
1225 *
1226 * @param string $image
1227 * @param int $rev
1228 * @param int $auth
1229 * @return string - file's id
1230 * @author Kate Arzamastseva <pshns@ukr.net>
1231 */
1232function media_restore($image, $rev, $auth){
1233    global $conf;
1234    if ($auth < AUTH_UPLOAD || !$conf['mediarevisions']) return false;
1235    $removed = (!file_exists(mediaFN($image)) && file_exists(mediaMetaFN($image, '.changes')));
1236    if (!$image || (!file_exists(mediaFN($image)) && !$removed)) return false;
1237    if (!$rev || !file_exists(mediaFN($image, $rev))) return false;
1238    list($iext,$imime,$dl) = mimetype($image);
1239    $res = media_upload_finish(mediaFN($image, $rev),
1240        mediaFN($image),
1241        $image,
1242        $imime,
1243        true,
1244        'copy');
1245    if (is_array($res)) {
1246        msg($res[0], $res[1]);
1247        return false;
1248    }
1249    return $res;
1250}
1251
1252/**
1253 * List all files found by the search request
1254 *
1255 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1256 * @author Andreas Gohr <gohr@cosmocode.de>
1257 * @author Kate Arzamastseva <pshns@ukr.net>
1258 * @triggers MEDIA_SEARCH
1259 */
1260function media_searchlist($query,$ns,$auth=null,$fullscreen=false,$sort=''){
1261    global $conf;
1262    global $lang;
1263
1264    $ns = cleanID($ns);
1265
1266    if ($query) {
1267        $evdata = array(
1268                'ns'    => $ns,
1269                'data'  => array(),
1270                'query' => $query
1271                );
1272        $evt = new Doku_Event('MEDIA_SEARCH', $evdata);
1273        if ($evt->advise_before()) {
1274            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
1275            $pattern = '/'.preg_quote($evdata['query'],'/').'/i';
1276            search($evdata['data'],
1277                    $conf['mediadir'],
1278                    'search_media',
1279                    array('showmsg'=>false,'pattern'=>$pattern),
1280                    $dir);
1281        }
1282
1283        $data = array();
1284        foreach ($evdata['data'] as $k => $v) {
1285            $data[$k] = ($sort == 'date') ? $v['mtime'] : $v['id'];
1286        }
1287        array_multisort($data, SORT_DESC, SORT_NUMERIC, $evdata['data']);
1288
1289        $evt->advise_after();
1290        unset($evt);
1291    }
1292
1293    if (!$fullscreen) {
1294        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
1295        media_searchform($ns,$query);
1296    }
1297
1298    if(!count($evdata['data'])){
1299        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
1300    }else {
1301        if ($fullscreen) {
1302            echo '<ul class="' . _media_get_list_type() . '">';
1303        }
1304        foreach($evdata['data'] as $item){
1305            if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
1306            else media_printfile_thumbs($item,$item['perm'],false,true);
1307        }
1308        if ($fullscreen) echo '</ul>'.NL;
1309    }
1310}
1311
1312/**
1313 * Formats and prints one file in the list
1314 */
1315function media_printfile($item,$auth,$jump,$display_namespace=false){
1316    global $lang;
1317    global $conf;
1318
1319    // Prepare zebra coloring
1320    // I always wanted to use this variable name :-D
1321    static $twibble = 1;
1322    $twibble *= -1;
1323    $zebra = ($twibble == -1) ? 'odd' : 'even';
1324
1325    // Automatically jump to recent action
1326    if($jump == $item['id']) {
1327        $jump = ' id="scroll__here" ';
1328    }else{
1329        $jump = '';
1330    }
1331
1332    // Prepare fileicons
1333    list($ext,$mime,$dl) = mimetype($item['file'],false);
1334    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
1335    $class = 'select mediafile mf_'.$class;
1336
1337    // Prepare filename
1338    $file = utf8_decodeFN($item['file']);
1339
1340    // Prepare info
1341    $info = '';
1342    if($item['isimg']){
1343        $info .= (int) $item['meta']->getField('File.Width');
1344        $info .= '&#215;';
1345        $info .= (int) $item['meta']->getField('File.Height');
1346        $info .= ' ';
1347    }
1348    $info .= '<i>'.dformat($item['mtime']).'</i>';
1349    $info .= ' ';
1350    $info .= filesize_h($item['size']);
1351
1352    // output
1353    echo '<div class="'.$zebra.'"'.$jump.'>'.NL;
1354    if (!$display_namespace) {
1355        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
1356    } else {
1357        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
1358    }
1359    echo '<span class="info">('.$info.')</span>'.NL;
1360
1361    // view button
1362    $link = ml($item['id'],'',true);
1363    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
1364        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
1365
1366    // mediamanager button
1367    $link = wl('',array('do'=>'media','image'=>$item['id']));
1368    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/mediamanager.png" '.
1369        'alt="'.$lang['btn_media'].'" title="'.$lang['btn_media'].'" class="btn" /></a>';
1370
1371    // delete button
1372    if($item['writable'] && $auth >= AUTH_DELETE){
1373        $link = DOKU_BASE.'lib/exe/mediamanager.php?delete='.rawurlencode($item['id']).
1374            '&amp;sectok='.getSecurityToken();
1375        echo ' <a href="'.$link.'" class="btn_media_delete" title="'.$item['id'].'">'.
1376            '<img src="'.DOKU_BASE.'lib/images/trash.png" alt="'.$lang['btn_delete'].'" '.
1377            'title="'.$lang['btn_delete'].'" class="btn" /></a>';
1378    }
1379
1380    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
1381    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
1382    echo '</div>';
1383    if($item['isimg']) media_printimgdetail($item);
1384    echo '<div class="clearer"></div>'.NL;
1385    echo '</div>'.NL;
1386}
1387
1388function media_printicon($filename){
1389    list($ext,$mime,$dl) = mimetype(mediaFN($filename),false);
1390
1391    if (@file_exists(DOKU_INC.'lib/images/fileicons/'.$ext.'.png')) {
1392        $icon = DOKU_BASE.'lib/images/fileicons/'.$ext.'.png';
1393    } else {
1394        $icon = DOKU_BASE.'lib/images/fileicons/file.png';
1395    }
1396
1397    return '<img src="'.$icon.'" alt="'.$filename.'" class="icon" />';
1398
1399}
1400
1401/**
1402 * Formats and prints one file in the list in the thumbnails view
1403 *
1404 * @author Kate Arzamastseva <pshns@ukr.net>
1405 */
1406function media_printfile_thumbs($item,$auth,$jump=false,$display_namespace=false){
1407    global $lang;
1408    global $conf;
1409
1410    // Prepare filename
1411    $file = utf8_decodeFN($item['file']);
1412
1413    // output
1414    echo '<li><dl>'.NL;
1415
1416        echo '<dt>';
1417    if($item['isimg']) {
1418        media_printimgdetail($item, true);
1419
1420    } else {
1421        echo '<a name="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1422            media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1423            'tab_details' => 'view')).'">';
1424        echo media_printicon($item['id']);
1425        echo '</a>';
1426    }
1427    echo '</dt>'.NL;
1428    if (!$display_namespace) {
1429        $name = hsc($file);
1430    } else {
1431        $name = hsc($item['id']);
1432    }
1433    echo '<dd class="name"><a href="'.media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1434        'tab_details' => 'view')).'" name="h_:'.$item['id'].'">'.$name.'</a></dd>'.NL;
1435
1436    if($item['isimg']){
1437        $size = '';
1438        $size .= (int) $item['meta']->getField('File.Width');
1439        $size .= '&#215;';
1440        $size .= (int) $item['meta']->getField('File.Height');
1441        echo '<dd class="size">'.$size.'</dd>'.NL;
1442    } else {
1443        echo '<dd class="size">&nbsp;</dd>'.NL;
1444    }
1445    $date = dformat($item['mtime']);
1446    echo '<dd class="date">'.$date.'</dd>'.NL;
1447    $filesize = filesize_h($item['size']);
1448    echo '<dd class="filesize">'.$filesize.'</dd>'.NL;
1449    echo '</dl></li>'.NL;
1450}
1451
1452/**
1453 * Prints a thumbnail and metainfos
1454 */
1455function media_printimgdetail($item, $fullscreen=false){
1456    // prepare thumbnail
1457    $size = $fullscreen ? 90 : 120;
1458
1459    $w = (int) $item['meta']->getField('File.Width');
1460    $h = (int) $item['meta']->getField('File.Height');
1461    if($w>$size || $h>$size){
1462        if (!$fullscreen) {
1463            $ratio = $item['meta']->getResizeRatio($size);
1464        } else {
1465            $ratio = $item['meta']->getResizeRatio($size,$size);
1466        }
1467        $w = floor($w * $ratio);
1468        $h = floor($h * $ratio);
1469    }
1470    $src = ml($item['id'],array('w'=>$w,'h'=>$h,'t'=>$item['mtime']));
1471    $p = array();
1472    if (!$fullscreen) {
1473        // In fullscreen mediamanager view, image resizing is done via CSS.
1474        $p['width']  = $w;
1475        $p['height'] = $h;
1476    }
1477    $p['alt']    = $item['id'];
1478    $att = buildAttributes($p);
1479
1480    // output
1481    if ($fullscreen) {
1482        echo '<a name="l_:'.$item['id'].'" class="image thumb" href="'.
1483            media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']), 'tab_details' => 'view')).'">';
1484        echo '<img src="'.$src.'" '.$att.' />';
1485        echo '</a>';
1486    }
1487
1488    if ($fullscreen) return;
1489
1490    echo '<div class="detail">';
1491    echo '<div class="thumb">';
1492    echo '<a name="d_:'.$item['id'].'" class="select">';
1493    echo '<img src="'.$src.'" '.$att.' />';
1494    echo '</a>';
1495    echo '</div>';
1496
1497    // read EXIF/IPTC data
1498    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
1499    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
1500                'EXIF.TIFFImageDescription',
1501                'EXIF.TIFFUserComment'));
1502    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
1503    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
1504
1505    // print EXIF/IPTC data
1506    if($t || $d || $k ){
1507        echo '<p>';
1508        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
1509        if($d) echo htmlspecialchars($d).'<br />';
1510        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
1511        echo '</p>';
1512    }
1513    echo '</div>';
1514}
1515
1516/**
1517 * Build link based on the current, adding/rewriting
1518 * parameters
1519 *
1520 * @author Kate Arzamastseva <pshns@ukr.net>
1521 * @param array $params
1522 * @param string $amp - separator
1523 * @return string - link
1524 */
1525function media_managerURL($params=false, $amp='&amp;', $abs=false, $params_array=false) {
1526    global $conf;
1527    global $ID;
1528
1529    $gets = array('do' => 'media');
1530    $media_manager_params = array('tab_files', 'tab_details', 'image', 'ns', 'list', 'sort');
1531    foreach ($media_manager_params as $x) {
1532        if (isset($_REQUEST[$x])) $gets[$x] = $_REQUEST[$x];
1533    }
1534
1535    if ($params) {
1536        $gets = $params + $gets;
1537    }
1538    unset($gets['id']);
1539    if (isset($gets['delete'])) {
1540        unset($gets['image']);
1541        unset($gets['tab_details']);
1542    }
1543
1544    if ($params_array) return $gets;
1545
1546    return wl($ID,$gets,$abs,$amp);
1547}
1548
1549/**
1550 * Print the media upload form if permissions are correct
1551 *
1552 * @author Andreas Gohr <andi@splitbrain.org>
1553 * @author Kate Arzamastseva <pshns@ukr.net>
1554 */
1555function media_uploadform($ns, $auth, $fullscreen = false){
1556    global $lang, $conf;
1557
1558    if($auth < AUTH_UPLOAD) {
1559        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
1560        return;
1561    }
1562    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
1563
1564    $update = false;
1565    $id = '';
1566    if ($auth >= $auth_ow && $fullscreen && $_REQUEST['mediado'] == 'update') {
1567        $update = true;
1568        $id = cleanID($_REQUEST['image']);
1569    }
1570
1571    // The default HTML upload form
1572    $params = array('id'      => 'dw__upload',
1573                    'enctype' => 'multipart/form-data');
1574    if (!$fullscreen) {
1575        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1576    } else {
1577        $params['action'] = media_managerURL(array('tab_files' => 'files',
1578            'tab_details' => 'view'), '&');
1579    }
1580
1581    $form = new Doku_Form($params);
1582    if (!$fullscreen) echo '<div class="upload">' . $lang['mediaupload'] . '</div>';
1583    $form->addElement(formSecurityToken());
1584    $form->addHidden('ns', hsc($ns));
1585    $form->addElement(form_makeOpenTag('p'));
1586    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
1587    $form->addElement(form_makeCloseTag('p'));
1588    $form->addElement(form_makeOpenTag('p'));
1589    $form->addElement(form_makeTextField('mediaid', noNS($id), $lang['txt_filename'].':', 'upload__name'));
1590    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
1591    $form->addElement(form_makeCloseTag('p'));
1592
1593    if($auth >= $auth_ow){
1594        $form->addElement(form_makeOpenTag('p'));
1595        $attrs = array();
1596        if ($update) $attrs['checked'] = 'checked';
1597        $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check', $attrs));
1598        $form->addElement(form_makeCloseTag('p'));
1599    }
1600
1601    echo NL.'<div id="mediamanager__uploader">'.NL;
1602    html_form('upload', $form);
1603    echo '</div>'.NL;
1604}
1605
1606/**
1607 * Print the search field form
1608 *
1609 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1610 * @author Kate Arzamastseva <pshns@ukr.net>
1611 */
1612function media_searchform($ns,$query='',$fullscreen=false){
1613    global $lang;
1614
1615    // The default HTML search form
1616    $params = array('id' => 'dw__mediasearch');
1617    if (!$fullscreen) {
1618        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1619    } else {
1620        $params['action'] = media_managerURL(array(), '&');
1621    }
1622    $form = new Doku_Form($params);
1623    $form->addHidden('ns', $ns);
1624    $form->addHidden($fullscreen ? 'mediado' : 'do', 'searchlist');
1625
1626    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediasearch'] . '</div>'.NL);
1627    $form->addElement(form_makeOpenTag('p'));
1628    $form->addElement(form_makeTextField('q', $query,$lang['searchmedia'],'','',array('title'=>sprintf($lang['searchmedia_in'],hsc($ns).':*'))));
1629    $form->addElement(form_makeButton('submit', '', $lang['btn_search']));
1630    $form->addElement(form_makeCloseTag('p'));
1631    html_form('searchmedia', $form);
1632}
1633
1634/**
1635 * Build a tree outline of available media namespaces
1636 *
1637 * @author Andreas Gohr <andi@splitbrain.org>
1638 */
1639function media_nstree($ns){
1640    global $conf;
1641    global $lang;
1642
1643    // currently selected namespace
1644    $ns  = cleanID($ns);
1645    if(empty($ns)){
1646        global $ID;
1647        $ns = dirname(str_replace(':','/',$ID));
1648        if($ns == '.') $ns ='';
1649    }
1650    $ns  = utf8_encodeFN(str_replace(':','/',$ns));
1651
1652    $data = array();
1653    search($data,$conf['mediadir'],'search_index',array('ns' => $ns, 'nofiles' => true));
1654
1655    // wrap a list with the root level around the other namespaces
1656    array_unshift($data, array('level' => 0, 'id' => '', 'open' =>'true',
1657                               'label' => '['.$lang['mediaroot'].']'));
1658
1659    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
1660}
1661
1662/**
1663 * Userfunction for html_buildlist
1664 *
1665 * Prints a media namespace tree item
1666 *
1667 * @author Andreas Gohr <andi@splitbrain.org>
1668 */
1669function media_nstree_item($item){
1670    $pos   = strrpos($item['id'], ':');
1671    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
1672    if(!$item['label']) $item['label'] = $label;
1673
1674    $ret  = '';
1675    if (!($_REQUEST['do'] == 'media'))
1676    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
1677    else $ret .= '<a href="'.media_managerURL(array('ns' => idfilter($item['id']), 'tab_files' => 'files'))
1678        .'" class="idx_dir">';
1679    $ret .= $item['label'];
1680    $ret .= '</a>';
1681    return $ret;
1682}
1683
1684/**
1685 * Userfunction for html_buildlist
1686 *
1687 * Prints a media namespace tree item opener
1688 *
1689 * @author Andreas Gohr <andi@splitbrain.org>
1690 */
1691function media_nstree_li($item){
1692    $class='media level'.$item['level'];
1693    if($item['open']){
1694        $class .= ' open';
1695        $img   = DOKU_BASE.'lib/images/minus.gif';
1696        $alt   = '&minus;';
1697    }else{
1698        $class .= ' closed';
1699        $img   = DOKU_BASE.'lib/images/plus.gif';
1700        $alt   = '+';
1701    }
1702    // TODO: only deliver an image if it actually has a subtree...
1703    return '<li class="'.$class.'">'.
1704        '<img src="'.$img.'" alt="'.$alt.'" />';
1705}
1706
1707/**
1708 * Resizes the given image to the given size
1709 *
1710 * @author  Andreas Gohr <andi@splitbrain.org>
1711 */
1712function media_resize_image($file, $ext, $w, $h=0){
1713    global $conf;
1714
1715    $info = @getimagesize($file); //get original size
1716    if($info == false) return $file; // that's no image - it's a spaceship!
1717
1718    if(!$h) $h = round(($w * $info[1]) / $info[0]);
1719
1720    // we wont scale up to infinity
1721    if($w > 2000 || $h > 2000) return $file;
1722
1723    //cache
1724    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
1725    $mtime = @filemtime($local); // 0 if not exists
1726
1727    if( $mtime > filemtime($file) ||
1728            media_resize_imageIM($ext,$file,$info[0],$info[1],$local,$w,$h) ||
1729            media_resize_imageGD($ext,$file,$info[0],$info[1],$local,$w,$h) ){
1730        if($conf['fperm']) chmod($local, $conf['fperm']);
1731        return $local;
1732    }
1733    //still here? resizing failed
1734    return $file;
1735}
1736
1737/**
1738 * Crops the given image to the wanted ratio, then calls media_resize_image to scale it
1739 * to the wanted size
1740 *
1741 * Crops are centered horizontally but prefer the upper third of an vertical
1742 * image because most pics are more interesting in that area (rule of thirds)
1743 *
1744 * @author  Andreas Gohr <andi@splitbrain.org>
1745 */
1746function media_crop_image($file, $ext, $w, $h=0){
1747    global $conf;
1748
1749    if(!$h) $h = $w;
1750    $info = @getimagesize($file); //get original size
1751    if($info == false) return $file; // that's no image - it's a spaceship!
1752
1753    // calculate crop size
1754    $fr = $info[0]/$info[1];
1755    $tr = $w/$h;
1756    if($tr >= 1){
1757        if($tr > $fr){
1758            $cw = $info[0];
1759            $ch = (int) $info[0]/$tr;
1760        }else{
1761            $cw = (int) $info[1]*$tr;
1762            $ch = $info[1];
1763        }
1764    }else{
1765        if($tr < $fr){
1766            $cw = (int) $info[1]*$tr;
1767            $ch = $info[1];
1768        }else{
1769            $cw = $info[0];
1770            $ch = (int) $info[0]/$tr;
1771        }
1772    }
1773    // calculate crop offset
1774    $cx = (int) ($info[0]-$cw)/2;
1775    $cy = (int) ($info[1]-$ch)/3;
1776
1777    //cache
1778    $local = getCacheName($file,'.media.'.$cw.'x'.$ch.'.crop.'.$ext);
1779    $mtime = @filemtime($local); // 0 if not exists
1780
1781    if( $mtime > filemtime($file) ||
1782            media_crop_imageIM($ext,$file,$info[0],$info[1],$local,$cw,$ch,$cx,$cy) ||
1783            media_resize_imageGD($ext,$file,$cw,$ch,$local,$cw,$ch,$cx,$cy) ){
1784        if($conf['fperm']) chmod($local, $conf['fperm']);
1785        return media_resize_image($local,$ext, $w, $h);
1786    }
1787
1788    //still here? cropping failed
1789    return media_resize_image($file,$ext, $w, $h);
1790}
1791
1792/**
1793 * Download a remote file and return local filename
1794 *
1795 * returns false if download fails. Uses cached file if available and
1796 * wanted
1797 *
1798 * @author  Andreas Gohr <andi@splitbrain.org>
1799 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
1800 */
1801function media_get_from_URL($url,$ext,$cache){
1802    global $conf;
1803
1804    // if no cache or fetchsize just redirect
1805    if ($cache==0)           return false;
1806    if (!$conf['fetchsize']) return false;
1807
1808    $local = getCacheName(strtolower($url),".media.$ext");
1809    $mtime = @filemtime($local); // 0 if not exists
1810
1811    //decide if download needed:
1812    if( ($mtime == 0) ||                           // cache does not exist
1813            ($cache != -1 && $mtime < time()-$cache)   // 'recache' and cache has expired
1814      ){
1815        if(media_image_download($url,$local)){
1816            return $local;
1817        }else{
1818            return false;
1819        }
1820    }
1821
1822    //if cache exists use it else
1823    if($mtime) return $local;
1824
1825    //else return false
1826    return false;
1827}
1828
1829/**
1830 * Download image files
1831 *
1832 * @author Andreas Gohr <andi@splitbrain.org>
1833 */
1834function media_image_download($url,$file){
1835    global $conf;
1836    $http = new DokuHTTPClient();
1837    $http->max_bodysize = $conf['fetchsize'];
1838    $http->timeout = 25; //max. 25 sec
1839    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
1840
1841    $data = $http->get($url);
1842    if(!$data) return false;
1843
1844    $fileexists = @file_exists($file);
1845    $fp = @fopen($file,"w");
1846    if(!$fp) return false;
1847    fwrite($fp,$data);
1848    fclose($fp);
1849    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
1850
1851    // check if it is really an image
1852    $info = @getimagesize($file);
1853    if(!$info){
1854        @unlink($file);
1855        return false;
1856    }
1857
1858    return true;
1859}
1860
1861/**
1862 * resize images using external ImageMagick convert program
1863 *
1864 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
1865 * @author Andreas Gohr <andi@splitbrain.org>
1866 */
1867function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
1868    global $conf;
1869
1870    // check if convert is configured
1871    if(!$conf['im_convert']) return false;
1872
1873    // prepare command
1874    $cmd  = $conf['im_convert'];
1875    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
1876    if ($ext == 'jpg' || $ext == 'jpeg') {
1877        $cmd .= ' -quality '.$conf['jpg_quality'];
1878    }
1879    $cmd .= " $from $to";
1880
1881    @exec($cmd,$out,$retval);
1882    if ($retval == 0) return true;
1883    return false;
1884}
1885
1886/**
1887 * crop images using external ImageMagick convert program
1888 *
1889 * @author Andreas Gohr <andi@splitbrain.org>
1890 */
1891function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
1892    global $conf;
1893
1894    // check if convert is configured
1895    if(!$conf['im_convert']) return false;
1896
1897    // prepare command
1898    $cmd  = $conf['im_convert'];
1899    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
1900    if ($ext == 'jpg' || $ext == 'jpeg') {
1901        $cmd .= ' -quality '.$conf['jpg_quality'];
1902    }
1903    $cmd .= " $from $to";
1904
1905    @exec($cmd,$out,$retval);
1906    if ($retval == 0) return true;
1907    return false;
1908}
1909
1910/**
1911 * resize or crop images using PHP's libGD support
1912 *
1913 * @author Andreas Gohr <andi@splitbrain.org>
1914 * @author Sebastian Wienecke <s_wienecke@web.de>
1915 */
1916function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
1917    global $conf;
1918
1919    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
1920
1921    // check available memory
1922    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
1923        return false;
1924    }
1925
1926    // create an image of the given filetype
1927    if ($ext == 'jpg' || $ext == 'jpeg'){
1928        if(!function_exists("imagecreatefromjpeg")) return false;
1929        $image = @imagecreatefromjpeg($from);
1930    }elseif($ext == 'png') {
1931        if(!function_exists("imagecreatefrompng")) return false;
1932        $image = @imagecreatefrompng($from);
1933
1934    }elseif($ext == 'gif') {
1935        if(!function_exists("imagecreatefromgif")) return false;
1936        $image = @imagecreatefromgif($from);
1937    }
1938    if(!$image) return false;
1939
1940    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
1941        $newimg = @imagecreatetruecolor ($to_w, $to_h);
1942    }
1943    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
1944    if(!$newimg){
1945        imagedestroy($image);
1946        return false;
1947    }
1948
1949    //keep png alpha channel if possible
1950    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
1951        imagealphablending($newimg, false);
1952        imagesavealpha($newimg,true);
1953    }
1954
1955    //keep gif transparent color if possible
1956    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
1957        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
1958            $transcolorindex = @imagecolortransparent($image);
1959            if($transcolorindex >= 0 ) { //transparent color exists
1960                $transcolor = @imagecolorsforindex($image, $transcolorindex);
1961                $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
1962                @imagefill($newimg, 0, 0, $transcolorindex);
1963                @imagecolortransparent($newimg, $transcolorindex);
1964            }else{ //filling with white
1965                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1966                @imagefill($newimg, 0, 0, $whitecolorindex);
1967            }
1968        }else{ //filling with white
1969            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1970            @imagefill($newimg, 0, 0, $whitecolorindex);
1971        }
1972    }
1973
1974    //try resampling first
1975    if(function_exists("imagecopyresampled")){
1976        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
1977            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1978        }
1979    }else{
1980        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1981    }
1982
1983    $okay = false;
1984    if ($ext == 'jpg' || $ext == 'jpeg'){
1985        if(!function_exists('imagejpeg')){
1986            $okay = false;
1987        }else{
1988            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
1989        }
1990    }elseif($ext == 'png') {
1991        if(!function_exists('imagepng')){
1992            $okay = false;
1993        }else{
1994            $okay =  imagepng($newimg, $to);
1995        }
1996    }elseif($ext == 'gif') {
1997        if(!function_exists('imagegif')){
1998            $okay = false;
1999        }else{
2000            $okay = imagegif($newimg, $to);
2001        }
2002    }
2003
2004    // destroy GD image ressources
2005    if($image) imagedestroy($image);
2006    if($newimg) imagedestroy($newimg);
2007
2008    return $okay;
2009}
2010
2011/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
2012