xref: /dokuwiki/inc/media.php (revision 9de3b5710719658ef75740c0bd930423cc7c209c) 
1<?php
2/**
3 * All output and handler function needed for the media management popup
4 *
5 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author     Andreas Gohr <andi@splitbrain.org>
7 */
8
9if(!defined('DOKU_INC')) die('meh.');
10if(!defined('NL')) define('NL',"\n");
11
12/**
13 * Lists pages which currently use a media file selected for deletion
14 *
15 * References uses the same visual as search results and share
16 * their CSS tags except pagenames won't be links.
17 *
18 * @author Matthias Grimm <matthiasgrimm@users.sourceforge.net>
19 */
20function media_filesinuse($data,$id){
21    global $lang;
22    echo '<h1>'.$lang['reference'].' <code>'.hsc(noNS($id)).'</code></h1>';
23    echo '<p>'.hsc($lang['ref_inuse']).'</p>';
24
25    $hidden=0; //count of hits without read permission
26    foreach($data as $row){
27        if(auth_quickaclcheck($row) >= AUTH_READ && isVisiblePage($row)){
28            echo '<div class="search_result">';
29            echo '<span class="mediaref_ref">'.hsc($row).'</span>';
30            echo '</div>';
31        }else
32            $hidden++;
33    }
34    if ($hidden){
35        print '<div class="mediaref_hidden">'.$lang['ref_hidden'].'</div>';
36    }
37}
38
39/**
40 * Handles the saving of image meta data
41 *
42 * @author Andreas Gohr <andi@splitbrain.org>
43 * @author Kate Arzamastseva <pshns@ukr.net>
44 */
45function media_metasave($id,$auth,$data){
46    if($auth < AUTH_UPLOAD) return false;
47    if(!checkSecurityToken()) return false;
48    global $lang;
49    global $conf;
50    $src = mediaFN($id);
51
52    $meta = new JpegMeta($src);
53    $meta->_parseAll();
54
55    foreach($data as $key => $val){
56        $val=trim($val);
57        if(empty($val)){
58            $meta->deleteField($key);
59        }else{
60            $meta->setField($key,$val);
61        }
62    }
63
64    $old = @filemtime($src);
65    if(!@file_exists(mediaFN($id, $old)) && @file_exists($src)) {
66        // add old revision to the attic
67        media_saveOldRevision($id);
68    }
69
70    if($meta->save()){
71        if($conf['fperm']) chmod($src, $conf['fperm']);
72
73        $new = @filemtime($src);
74        // add a log entry to the media changelog
75        addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT, $lang['media_meta_edited']);
76
77        msg($lang['metasaveok'],1);
78        return $id;
79    }else{
80        msg($lang['metasaveerr'],-1);
81        return false;
82    }
83}
84
85/**
86 * Display the form to edit image meta data
87 *
88 * @author Andreas Gohr <andi@splitbrain.org>
89 * @author Kate Arzamastseva <pshns@ukr.net>
90 */
91function media_metaform($id,$auth,$fullscreen = false){
92    global $lang, $config_cascade;
93
94    if($auth < AUTH_UPLOAD) {
95        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
96        return false;
97    }
98
99    // load the field descriptions
100    static $fields = null;
101    if(is_null($fields)){
102        $config_files = getConfigFiles('mediameta');
103        foreach ($config_files as $config_file) {
104            if(@file_exists($config_file)) include($config_file);
105        }
106    }
107
108    $src = mediaFN($id);
109
110    // output
111    if (!$fullscreen) {
112        echo '<h1>'.hsc(noNS($id)).'</h1>'.NL;
113        $action = DOKU_BASE.'lib/exe/mediamanager.php';
114    } else {
115        $action = media_managerURL(array('tab_details' => 'view'), '&');
116    }
117    echo '<form action="'.$action.'" id="mediamanager__save_meta" accept-charset="utf-8" method="post" class="meta">'.NL;
118
119    formSecurityToken();
120    foreach($fields as $key => $field){
121        // get current value
122        if (empty($field[0])) continue;
123        $tags = array($field[0]);
124        if(is_array($field[3])) $tags = array_merge($tags,$field[3]);
125        $value = tpl_img_getTag($tags,'',$src);
126        $value = cleanText($value);
127
128        // prepare attributes
129        $p = array();
130        $p['class'] = 'edit';
131        $p['id']    = 'meta__'.$key;
132        $p['name']  = 'meta['.$field[0].']';
133
134        // put label
135        echo '<div class="metafield">';
136        echo '<label for="meta__'.$key.'">';
137        echo ($lang[$field[1]]) ? $lang[$field[1]] : $field[1];
138        echo ':</label>';
139
140        // put input field
141        if($field[2] == 'text'){
142            $p['value'] = $value;
143            $p['type']  = 'text';
144            $att = buildAttributes($p);
145            echo "<input $att/>".NL;
146        }else{
147            $att = buildAttributes($p);
148            echo "<textarea $att rows=\"6\" cols=\"50\">".formText($value).'</textarea>'.NL;
149        }
150        echo '</div>'.NL;
151    }
152    echo '<div class="buttons">'.NL;
153    echo '<input type="hidden" name="img" value="'.hsc($id).'" />'.NL;
154    if (!$fullscreen) {
155        $do = 'do';
156    } else {
157        echo '<input type="hidden" name="mediado" value="save" />';
158        $do = 'mediado';
159    }
160    echo '<input name="'.$do.'[save]" type="submit" value="'.$lang['btn_save'].
161        '" title="'.$lang['btn_save'].' [S]" accesskey="s" class="button" />'.NL;
162    if (!$fullscreen)
163    echo '<input name="do[cancel]" type="submit" value="'.$lang['btn_cancel'].
164        '" title="'.$lang['btn_cancel'].' [C]" accesskey="c" class="button" />'.NL;
165    echo '</div>'.NL;
166    echo '</form>'.NL;
167}
168
169/**
170 * Convenience function to check if a media file is still in use
171 *
172 * @author Michael Klier <chi@chimeric.de>
173 */
174function media_inuse($id) {
175    global $conf;
176    $mediareferences = array();
177    if($conf['refcheck']){
178        $mediareferences = ft_mediause($id,$conf['refshow']);
179        if(!count($mediareferences)) {
180            return false;
181        } else {
182            return $mediareferences;
183        }
184    } else {
185        return false;
186    }
187}
188
189define('DOKU_MEDIA_DELETED', 1);
190define('DOKU_MEDIA_NOT_AUTH', 2);
191define('DOKU_MEDIA_INUSE', 4);
192define('DOKU_MEDIA_EMPTY_NS', 8);
193
194/**
195 * Handles media file deletions
196 *
197 * If configured, checks for media references before deletion
198 *
199 * @author Andreas Gohr <andi@splitbrain.org>
200 * @return int One of: 0,
201                       DOKU_MEDIA_DELETED,
202                       DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS,
203                       DOKU_MEDIA_NOT_AUTH,
204                       DOKU_MEDIA_INUSE
205 */
206function media_delete($id,$auth){
207    global $lang;
208    if($auth < AUTH_DELETE) return DOKU_MEDIA_NOT_AUTH;
209    if(media_inuse($id)) return DOKU_MEDIA_INUSE;
210
211    $file = mediaFN($id);
212
213    // trigger an event - MEDIA_DELETE_FILE
214    $data['id']   = $id;
215    $data['name'] = basename($file);
216    $data['path'] = $file;
217    $data['size'] = (@file_exists($file)) ? filesize($file) : 0;
218
219    $data['unl'] = false;
220    $data['del'] = false;
221    $evt = new Doku_Event('MEDIA_DELETE_FILE',$data);
222    if ($evt->advise_before()) {
223        $old = @filemtime($file);
224        if(!@file_exists(mediaFN($id, $old)) && @file_exists($file)) {
225            // add old revision to the attic
226            media_saveOldRevision($id);
227        }
228
229        $data['unl'] = @unlink($file);
230        if($data['unl']){
231            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_DELETE, $lang['deleted']);
232            $data['del'] = io_sweepNS($id,'mediadir');
233        }
234    }
235    $evt->advise_after();
236    unset($evt);
237
238    if($data['unl'] && $data['del']){
239        return DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS;
240    }
241
242    return $data['unl'] ? DOKU_MEDIA_DELETED : 0;
243}
244
245/**
246 * Handle file uploads via XMLHttpRequest
247 *
248 * @return mixed false on error, id of the new file on success
249 */
250function media_upload_xhr($ns,$auth){
251    if(!checkSecurityToken()) return false;
252
253    $id = $_GET['qqfile'];
254    list($ext,$mime,$dl) = mimetype($id);
255    $input = fopen("php://input", "r");
256    $temp = tmpfile();
257    $realSize = stream_copy_to_stream($input, $temp);
258    fclose($input);
259    if ($realSize != (int)$_SERVER["CONTENT_LENGTH"]) return false;
260    if (!($tmp = io_mktmpdir())) return false;
261    $path = $tmp.'/'.$id;
262    $target = fopen($path, "w");
263    fseek($temp, 0, SEEK_SET);
264    stream_copy_to_stream($temp, $target);
265    fclose($target);
266    $res = media_save(
267        array('name' => $path,
268            'mime' => $mime,
269            'ext'  => $ext),
270        $ns.':'.$id,
271        (($_REQUEST['ow'] == 'checked') ? true : false),
272        $auth,
273        'copy'
274    );
275    unlink($path);
276    if ($tmp) dir_delete($tmp);
277    if (is_array($res)) {
278        msg($res[0], $res[1]);
279        return false;
280    }
281    return $res;
282}
283
284/**
285 * Handles media file uploads
286 *
287 * @author Andreas Gohr <andi@splitbrain.org>
288 * @author Michael Klier <chi@chimeric.de>
289 * @return mixed false on error, id of the new file on success
290 */
291function media_upload($ns,$auth,$file=false){
292    if(!checkSecurityToken()) return false;
293    global $lang;
294
295    // get file and id
296    $id   = $_POST['mediaid'];
297    if (!$file) $file = $_FILES['upload'];
298    if(empty($id)) $id = $file['name'];
299
300    // check for errors (messages are done in lib/exe/mediamanager.php)
301    if($file['error']) return false;
302
303    // check extensions
304    list($fext,$fmime,$dl) = mimetype($file['name']);
305    list($iext,$imime,$dl) = mimetype($id);
306    if($fext && !$iext){
307        // no extension specified in id - read original one
308        $id   .= '.'.$fext;
309        $imime = $fmime;
310    }elseif($fext && $fext != $iext){
311        // extension was changed, print warning
312        msg(sprintf($lang['mediaextchange'],$fext,$iext));
313    }
314
315    $res = media_save(array('name' => $file['tmp_name'],
316                            'mime' => $imime,
317                            'ext'  => $iext), $ns.':'.$id,
318                      $_REQUEST['ow'], $auth, 'move_uploaded_file');
319    if (is_array($res)) {
320        msg($res[0], $res[1]);
321        return false;
322    }
323    return $res;
324}
325
326/**
327 * This generates an action event and delegates to _media_upload_action().
328 * Action plugins are allowed to pre/postprocess the uploaded file.
329 * (The triggered event is preventable.)
330 *
331 * Event data:
332 * $data[0]     fn_tmp: the temporary file name (read from $_FILES)
333 * $data[1]     fn: the file name of the uploaded file
334 * $data[2]     id: the future directory id of the uploaded file
335 * $data[3]     imime: the mimetype of the uploaded file
336 * $data[4]     overwrite: if an existing file is going to be overwritten
337 *
338 * @triggers MEDIA_UPLOAD_FINISH
339 */
340function media_save($file, $id, $ow, $auth, $move) {
341    if($auth < AUTH_UPLOAD) {
342        return array("You don't have permissions to upload files.", -1);
343    }
344
345    if (!isset($file['mime']) || !isset($file['ext'])) {
346        list($ext, $mime) = mimetype($id);
347        if (!isset($file['mime'])) {
348            $file['mime'] = $mime;
349        }
350        if (!isset($file['ext'])) {
351            $file['ext'] = $ext;
352        }
353    }
354
355    global $lang, $conf;
356
357    // get filename
358    $id   = cleanID($id,false,true);
359    $fn   = mediaFN($id);
360
361    // get filetype regexp
362    $types = array_keys(getMimeTypes());
363    $types = array_map(create_function('$q','return preg_quote($q,"/");'),$types);
364    $regex = join('|',$types);
365
366    // because a temp file was created already
367    if(!preg_match('/\.('.$regex.')$/i',$fn)) {
368        return array($lang['uploadwrong'],-1);
369    }
370
371    //check for overwrite
372    $overwrite = @file_exists($fn);
373    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
374    if($overwrite && (!$ow || $auth < $auth_ow)) {
375        return array($lang['uploadexist'], 0);
376    }
377    // check for valid content
378    $ok = media_contentcheck($file['name'], $file['mime']);
379    if($ok == -1){
380        return array(sprintf($lang['uploadbadcontent'],'.' . $file['ext']),-1);
381    }elseif($ok == -2){
382        return array($lang['uploadspam'],-1);
383    }elseif($ok == -3){
384        return array($lang['uploadxss'],-1);
385    }
386
387    // prepare event data
388    $data[0] = $file['name'];
389    $data[1] = $fn;
390    $data[2] = $id;
391    $data[3] = $file['mime'];
392    $data[4] = $overwrite;
393    $data[5] = $move;
394
395    // trigger event
396    return trigger_event('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
397}
398
399/**
400 * Callback adapter for media_upload_finish()
401 * @author Michael Klier <chi@chimeric.de>
402 */
403function _media_upload_action($data) {
404    // fixme do further sanity tests of given data?
405    if(is_array($data) && count($data)===6) {
406        return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
407    } else {
408        return false; //callback error
409    }
410}
411
412/**
413 * Saves an uploaded media file
414 *
415 * @author Andreas Gohr <andi@splitbrain.org>
416 * @author Michael Klier <chi@chimeric.de>
417 * @author Kate Arzamastseva <pshns@ukr.net>
418 */
419function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') {
420    global $conf;
421    global $lang;
422    global $REV;
423
424    $old = @filemtime($fn);
425    if(!@file_exists(mediaFN($id, $old)) && @file_exists($fn)) {
426        // add old revision to the attic if missing
427        media_saveOldRevision($id);
428    }
429
430    // prepare directory
431    io_createNamespace($id, 'media');
432
433    if($move($fn_tmp, $fn)) {
434        @clearstatcache(true,$fn);
435        $new = @filemtime($fn);
436        // Set the correct permission here.
437        // Always chmod media because they may be saved with different permissions than expected from the php umask.
438        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
439        chmod($fn, $conf['fmode']);
440        msg($lang['uploadsucc'],1);
441        media_notify($id,$fn,$imime,$old);
442        // add a log entry to the media changelog
443        if ($REV){
444            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_REVERT, $lang['restored'], $REV);
445        } elseif ($overwrite) {
446            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT);
447        } else {
448            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
449        }
450        return $id;
451    }else{
452        return array($lang['uploadfail'],-1);
453    }
454}
455
456/**
457 * Moves the current version of media file to the media_attic
458 * directory
459 *
460 * @author Kate Arzamastseva <pshns@ukr.net>
461 * @param string $id
462 * @return int - revision date
463 */
464function media_saveOldRevision($id){
465    global $conf, $lang;
466
467    $oldf = mediaFN($id);
468    if(!@file_exists($oldf)) return '';
469    $date = filemtime($oldf);
470    if (!$conf['mediarevisions']) return $date;
471
472    if (!getRevisionInfo($id, $date, 8192, true)) {
473        // there was an external edit,
474        // there is no log entry for current version of file
475        if (!@file_exists(mediaMetaFN($id,'.changes'))) {
476            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
477        } else {
478            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_EDIT);
479        }
480    }
481
482    $newf = mediaFN($id,$date);
483    io_makeFileDir($newf);
484    if(copy($oldf, $newf)) {
485        // Set the correct permission here.
486        // Always chmod media because they may be saved with different permissions than expected from the php umask.
487        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
488        chmod($newf, $conf['fmode']);
489    }
490    return $date;
491}
492
493/**
494 * This function checks if the uploaded content is really what the
495 * mimetype says it is. We also do spam checking for text types here.
496 *
497 * We need to do this stuff because we can not rely on the browser
498 * to do this check correctly. Yes, IE is broken as usual.
499 *
500 * @author Andreas Gohr <andi@splitbrain.org>
501 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
502 * @fixme  check all 26 magic IE filetypes here?
503 */
504function media_contentcheck($file,$mime){
505    global $conf;
506    if($conf['iexssprotect']){
507        $fh = @fopen($file, 'rb');
508        if($fh){
509            $bytes = fread($fh, 256);
510            fclose($fh);
511            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
512                return -3;
513            }
514        }
515    }
516    if(substr($mime,0,6) == 'image/'){
517        $info = @getimagesize($file);
518        if($mime == 'image/gif' && $info[2] != 1){
519            return -1;
520        }elseif($mime == 'image/jpeg' && $info[2] != 2){
521            return -1;
522        }elseif($mime == 'image/png' && $info[2] != 3){
523            return -1;
524        }
525        # fixme maybe check other images types as well
526    }elseif(substr($mime,0,5) == 'text/'){
527        global $TEXT;
528        $TEXT = io_readFile($file);
529        if(checkwordblock()){
530            return -2;
531        }
532    }
533    return 0;
534}
535
536/**
537 * Send a notify mail on uploads
538 *
539 * @author Andreas Gohr <andi@splitbrain.org>
540 */
541function media_notify($id,$file,$mime,$old_rev=false){
542    global $lang;
543    global $conf;
544    global $INFO;
545    if(empty($conf['notify'])) return; //notify enabled?
546
547    $ip = clientIP();
548
549    $text = rawLocale('uploadmail');
550    $text = str_replace('@DATE@',dformat(),$text);
551    $text = str_replace('@BROWSER@',$_SERVER['HTTP_USER_AGENT'],$text);
552    $text = str_replace('@IPADDRESS@',$ip,$text);
553    $text = str_replace('@HOSTNAME@',gethostsbyaddrs($ip),$text);
554    $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
555    $text = str_replace('@USER@',$_SERVER['REMOTE_USER'],$text);
556    $text = str_replace('@MIME@',$mime,$text);
557    $text = str_replace('@MEDIA@',ml($id,'',true,'&',true),$text);
558    $text = str_replace('@SIZE@',filesize_h(filesize($file)),$text);
559    if ($old_rev && $conf['mediarevisions']) {
560        $text = str_replace('@OLD@', ml($id, "rev=$old_rev", true, '&', true), $text);
561    } else {
562        $text = str_replace('@OLD@', '', $text);
563    }
564
565    if(empty($conf['mailprefix'])) {
566        $subject = '['.$conf['title'].'] '.$lang['mail_upload'].' '.$id;
567    } else {
568        $subject = '['.$conf['mailprefix'].'] '.$lang['mail_upload'].' '.$id;
569    }
570
571    mail_send($conf['notify'],$subject,$text,$conf['mailfrom']);
572}
573
574/**
575 * List all files in a given Media namespace
576 */
577function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false,$sort=false){
578    global $conf;
579    global $lang;
580    $ns = cleanID($ns);
581
582    // check auth our self if not given (needed for ajax calls)
583    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
584
585    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
586
587    if($auth < AUTH_READ){
588        // FIXME: print permission warning here instead?
589        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
590    }else{
591        if (!$fullscreenview) media_uploadform($ns, $auth);
592
593        $dir = utf8_encodeFN(str_replace(':','/',$ns));
594        $data = array();
595        search($data,$conf['mediadir'],'search_media',
596                array('showmsg'=>true,'depth'=>1),$dir,1,$sort);
597
598        if(!count($data)){
599            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
600        }else {
601            if ($fullscreenview) {
602                $view = $_REQUEST['view'];
603                if ($view == 'list') {
604                    echo '<ul class="mediamanager-list" id="mediamanager__file_list">';
605                } else {
606                    echo '<ul class="mediamanager-thumbs" id="mediamanager__file_list">';
607                }
608            }
609            foreach($data as $item){
610                if (!$fullscreenview) {
611                    media_printfile($item,$auth,$jump);
612                } else {
613                    media_printfile_thumbs($item,$auth,$jump);
614                }
615            }
616            if ($fullscreenview) echo '</ul>';
617        }
618    }
619    if (!$fullscreenview) media_searchform($ns);
620}
621
622/**
623 * Prints mediamanager tab
624 *
625 * @author Kate Arzamastseva <pshns@ukr.net>
626 * @param string $link
627 * @param string $class
628 * @param string $name
629 * @param string $selected
630 */
631function media_tab($link, $class, $name, $selected=false) {
632    if (!empty($selected) && $selected == $class) $class .= ' selected';
633    $tab = '<a href="'.$link.'" class="'.$class.'" >'.$name.'</a>';
634    echo $tab;
635}
636
637/**
638 * Prints tabs for files list actions
639 *
640 * @author Kate Arzamastseva <pshns@ukr.net>
641 * @param string $selected - opened tab
642 */
643function media_tabs_files($selected=false){
644    global $lang;
645
646    echo '<div class="mediamanager-tabs" id="mediamanager__tabs_files">';
647
648    media_tab(media_managerURL(array('tab_files' => 'files')), 'files', $lang['mediaselect'], $selected);
649    media_tab(media_managerURL(array('tab_files' => 'upload')), 'upload', $lang['media_uploadtab'], $selected);
650    media_tab(media_managerURL(array('tab_files' => 'search')), 'search', $lang['media_searchtab'], $selected);
651
652    echo '<div class="clearer"></div>';
653    echo '</div>';
654}
655
656/**
657 * Prints tabs for files details actions
658 *
659 * @author Kate Arzamastseva <pshns@ukr.net>
660 * @param string $selected - opened tab
661 */
662function media_tabs_details($image, $selected=false){
663    global $lang, $conf;
664
665    echo '<div class="mediamanager-tabs" id="mediamanager__tabs_details">';
666
667    media_tab(media_managerURL(array('tab_details' => 'view')), 'view', $lang['media_viewtab'], $selected);
668
669    list($ext, $mime) = mimetype($image);
670    if ($mime == 'image/jpeg' && @file_exists(mediaFN($image))) {
671        media_tab(media_managerURL(array('tab_details' => 'edit')), 'edit', $lang['media_edittab'], $selected);
672    }
673    if ($conf['mediarevisions']) {
674        media_tab(media_managerURL(array('tab_details' => 'history')), 'history', $lang['media_historytab'], $selected);
675    }
676
677    echo '<div class="clearer"></div>';
678    echo '</div>';
679}
680
681/**
682 * Prints options for the tab that displays a list of all files
683 *
684 * @author Kate Arzamastseva <pshns@ukr.net>
685 */
686function media_tab_files_options($ns, $sort){
687    global $lang;
688
689    echo '<div class="background-container">';
690    echo $ns ? $ns : '['.$lang['mediaroot'].']';
691
692    echo '<div id="mediamanager__tabs_list">';
693
694    echo '<a href="'.media_managerURL(array('view' => 'thumbs')).'" id="mediamanager__link_thumbs" >';
695    echo $lang['media_thumbsview'];
696    echo '</a>';
697
698    echo '<a href="'.media_managerURL(array('view' => 'list')).'" id="mediamanager__link_list" >';
699    echo $lang['media_listview'];
700    echo '</a>';
701
702    echo '</div>';
703
704    echo '<div id="mediamanager__sort">';
705    $form = new Doku_Form(array('action'=>media_managerURL(array(), '&'), 'id' => 'mediamanager__form_sort'));
706    $form->addElement(form_makeListboxField(
707                        'sort',
708                        array(
709                            'name' => $lang['media_sort_name'],
710                            'date' => $lang['media_sort_date']),
711                        $sort,
712                        $lang['media_sort']));
713    $form->addElement(form_makeButton('submit', '', $lang['btn_apply']));
714    $form->printForm();
715    echo '</div>';
716
717    echo '<div class="clearer"></div>';
718    echo '</div>';
719}
720
721/**
722 * Prints tab that displays a list of all files
723 *
724 * @author Kate Arzamastseva <pshns@ukr.net>
725 */
726function media_tab_files($ns,$auth=null,$jump='') {
727    global $lang;
728    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
729
730    $sort = $_REQUEST['sort'];
731    if (!$sort && @strpos($_COOKIE['DOKU_PREFS'], 'sort')) {
732        $parts = explode('#', $_COOKIE['DOKU_PREFS']);
733            for ($i = 0; $i < count($parts); $i+=2){
734                if ($parts[$i] == 'sort') $sort = $parts[$i+1];
735            }
736    }
737    media_tab_files_options($ns, $sort);
738
739    echo '<div class="scroll-container" >';
740    if($auth < AUTH_READ){
741        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
742    }else{
743        media_filelist($ns,$auth,$jump,true,$sort);
744    }
745    echo '</div>';
746}
747
748/**
749 * Prints tab that displays uploading form
750 *
751 * @author Kate Arzamastseva <pshns@ukr.net>
752 */
753function media_tab_upload($ns,$auth=null,$jump='') {
754    global $lang;
755    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
756
757    echo '<div class="background-container">';
758    echo sprintf($lang['media_upload'], $ns ? $ns : '['.$lang['mediaroot'].']');
759    echo '</div>';
760
761    echo '<div class="scroll-container">';
762    if ($auth >= AUTH_UPLOAD) echo '<div class="upload">' . $lang['mediaupload'] . '</div>';
763    media_uploadform($ns, $auth, true);
764    echo '</div>';
765}
766
767/**
768 * Prints tab that displays search form
769 *
770 * @author Kate Arzamastseva <pshns@ukr.net>
771 */
772function media_tab_search($ns,$auth=null) {
773    global $lang;
774
775    $do = $_REQUEST['mediado'];
776    $query = $_REQUEST['q'];
777    if (!$query) $query = '';
778
779    echo '<div class="background-container">';
780    echo sprintf($lang['media_search'], $ns ? $ns : '['.$lang['mediaroot'].']');
781    echo'</div>';
782
783    echo '<div class="scroll-container">';
784    media_searchform($ns, $query, true);
785    if ($do == 'searchlist') media_searchlist($query,$ns,$auth,true);
786    echo '</div>';
787}
788
789/**
790 * Prints tab that displays mediafile details
791 *
792 * @author Kate Arzamastseva <pshns@ukr.net>
793 */
794function media_tab_view($image, $ns, $auth=null, $rev=false) {
795    global $lang, $conf;
796    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
797
798    echo '<div class="background-container">';
799    list($ext,$mime,$dl) = mimetype($image,false);
800    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
801    $class = 'select mediafile mf_'.$class;
802    echo '<a class="'.$class.'" >'.$image.'</a>';
803    echo '</div>';
804
805    echo '<div class="scroll-container">';
806    if ($image && $auth >= AUTH_READ) {
807        $meta = new JpegMeta(mediaFN($image, $rev));
808        media_preview($image, $auth, $rev, $meta);
809        media_preview_buttons($image, $auth, $rev);
810        media_details($image, $auth, $rev, $meta);
811
812    } else {
813        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>';
814    }
815    echo '</div>';
816}
817
818/**
819 * Prints tab that displays form for editing mediafile metadata
820 *
821 * @author Kate Arzamastseva <pshns@ukr.net>
822 */
823function media_tab_edit($image, $ns, $auth=null) {
824    global $lang;
825    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
826
827    echo '<div class="background-container">';
828    echo $lang['media_edit'];
829    echo '</div>';
830
831    echo '<div class="scroll-container">';
832    if ($image) {
833        list($ext, $mime) = mimetype($image);
834        if ($mime == 'image/jpeg') media_metaform($image,$auth,true);
835    }
836    echo '</div>';
837}
838
839/**
840 * Prints tab that displays mediafile revisions
841 *
842 * @author Kate Arzamastseva <pshns@ukr.net>
843 */
844function media_tab_history($image, $ns, $auth=null) {
845    global $lang;
846    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
847    $do = $_REQUEST['mediado'];
848
849    echo '<div class="background-container">';
850    echo $lang['media_history'];
851    echo '</div>';
852
853    echo '<div class="scroll-container">';
854    if ($auth >= AUTH_READ && $image) {
855        if ($do == 'diff'){
856            media_diff($image, $ns, $auth);
857        } else {
858            $first = isset($_REQUEST['first']) ? intval($_REQUEST['first']) : 0;
859            html_revisions($first, $image);
860        }
861    } else {
862        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
863    }
864    echo '</div>';
865}
866
867/**
868 * Prints mediafile details
869 *
870 * @author Kate Arzamastseva <pshns@ukr.net>
871 */
872function media_preview($image, $auth, $rev=false, $meta=false) {
873    global $lang;
874
875    echo '<div class="mediamanager__preview">';
876
877    $size = media_image_preview_size($image, $rev, $meta);
878
879    if ($size) {
880        $more = array();
881        if ($rev) {
882            $more['rev'] = $rev;
883        } else {
884            $t = @filemtime(mediaFN($image));
885            $more['t'] = $t;
886        }
887
888        $more['w'] = $size[0];
889        $more['h'] = $size[1];
890        $src = ml($image, $more);
891        echo '<img src="'.$src.'" alt="'.$image.'" style="max-width: '.$size[0].'px;" />';
892    }
893
894    echo '</div>';
895}
896
897/**
898 * Prints mediafile action buttons
899 *
900 * @author Kate Arzamastseva <pshns@ukr.net>
901 */
902function media_preview_buttons($image, $auth, $rev=false) {
903    global $lang, $conf;
904
905    echo '<div class="mediamanager__preview_buttons">';
906
907    $more = '';
908    if ($rev) {
909        $more = "rev=$rev";
910    } else {
911        $t = @filemtime(mediaFN($image));
912        $more = "t=$t";
913    }
914    $link = ml($image,$more,true,'&');
915
916    if (@file_exists(mediaFN($image, $rev))) {
917
918        // view original file button
919        $form = new Doku_Form(array('action'=>$link, 'target'=>'_blank'));
920        $form->addElement(form_makeButton('submit','',$lang['mediaview']));
921        $form->printForm();
922    }
923
924    if($auth >= AUTH_DELETE && !$rev && @file_exists(mediaFN($image))){
925
926        // delete button
927        $form = new Doku_Form(array('id' => 'mediamanager__btn_delete',
928            'action'=>media_managerURL(array('delete' => $image), '&')));
929        $form->addElement(form_makeButton('submit','',$lang['btn_delete']));
930        $form->printForm();
931
932    }
933
934    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
935    if($auth >= $auth_ow && !$rev){
936
937        // upload new version button
938        $form = new Doku_Form(array('id' => 'mediamanager__btn_update',
939            'action'=>media_managerURL(array('image' => $image, 'mediado' => 'update'), '&')));
940        $form->addElement(form_makeButton('submit','',$lang['media_update']));
941        $form->printForm();
942    }
943
944    if($auth >= AUTH_DELETE && $rev && $conf['mediarevisions'] && @file_exists(mediaFN($image, $rev))){
945
946        // restore button
947        $form = new Doku_Form(array('id' => 'mediamanager__btn_restore',
948            'action'=>media_managerURL(array('image' => $image), '&')));
949        $form->addHidden('mediado','restore');
950        $form->addHidden('rev',$rev);
951        $form->addElement(form_makeButton('submit','',$lang['media_restore']));
952        $form->printForm();
953    }
954
955    echo '</div>';
956}
957
958/**
959 * Returns image width and height for mediamanager preview panel
960 *
961 * @author Kate Arzamastseva <pshns@ukr.net>
962 * @param string $image
963 * @param int $rev
964 * @param JpegMeta $meta
965 * @return array
966 */
967function media_image_preview_size($image, $rev, $meta, $size = 500) {
968    if (!preg_match("/\.(jpe?g|gif|png)$/", $image) || !file_exists(mediaFN($image, $rev))) return false;
969
970    $info = getimagesize(mediaFN($image, $rev));
971    $w = (int) $info[0];
972    $h = (int) $info[1];
973
974    if($meta && ($w > $size || $h > $size)){
975        $ratio = $meta->getResizeRatio($size, $size);
976        $w = floor($w * $ratio);
977        $h = floor($h * $ratio);
978    }
979    return array($w, $h);
980}
981
982/**
983 * Returns the requested EXIF/IPTC tag from the image meta
984 *
985 * @author Kate Arzamastseva <pshns@ukr.net>
986 * @param array $tags
987 * @param JpegMeta $meta
988 * @param string $alt
989 * @return string
990 */
991function media_getTag($tags,$meta,$alt=''){
992    if($meta === false) return $alt;
993    $info = $meta->getField($tags);
994    if($info == false) return $alt;
995    return $info;
996}
997
998/**
999 * Returns mediafile tags
1000 *
1001 * @author Kate Arzamastseva <pshns@ukr.net>
1002 * @param JpegMeta $meta
1003 * @return array
1004 */
1005function media_file_tags($meta) {
1006    global $config_cascade;
1007
1008    // load the field descriptions
1009    static $fields = null;
1010    if(is_null($fields)){
1011        $config_files = getConfigFiles('mediameta');
1012        foreach ($config_files as $config_file) {
1013            if(@file_exists($config_file)) include($config_file);
1014        }
1015    }
1016
1017    $tags = array();
1018
1019    foreach($fields as $key => $tag){
1020        $t = array();
1021        if (!empty($tag[0])) $t = array($tag[0]);
1022        if(is_array($tag[3])) $t = array_merge($t,$tag[3]);
1023        $value = media_getTag($t, $meta);
1024        $tags[] = array('tag' => $tag, 'value' => $value);
1025    }
1026
1027    return $tags;
1028}
1029
1030/**
1031 * Prints mediafile tags
1032 *
1033 * @author Kate Arzamastseva <pshns@ukr.net>
1034 */
1035function media_details($image, $auth, $rev=false, $meta=false) {
1036    global $lang;
1037
1038    if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev));
1039    $tags = media_file_tags($meta);
1040
1041    echo '<dl class="img_tags">';
1042    foreach($tags as $tag){
1043        if ($tag['value']) {
1044            $value = cleanText($tag['value']);
1045            echo '<dt>'.$lang[$tag['tag'][1]].':</dt><dd>';
1046            if ($tag['tag'][2] == 'date') echo dformat($value);
1047            else echo hsc($value);
1048            echo '</dd>';
1049        }
1050    }
1051    echo '</dl>';
1052}
1053
1054/**
1055 * Shows difference between two revisions of file
1056 *
1057 * @author Kate Arzamastseva <pshns@ukr.net>
1058 */
1059function media_diff($image, $ns, $auth, $fromajax = false) {
1060    global $lang;
1061    global $conf;
1062
1063    if ($auth < AUTH_READ || !$image || !$conf['mediarevisions']) return '';
1064
1065    $rev1 = (int) $_REQUEST['rev'];
1066
1067    if(is_array($_REQUEST['rev2'])){
1068        $rev1 = (int) $_REQUEST['rev2'][0];
1069        $rev2 = (int) $_REQUEST['rev2'][1];
1070
1071        if(!$rev1){
1072            $rev1 = $rev2;
1073            unset($rev2);
1074        }
1075    }else{
1076        $rev2 = (int) $_REQUEST['rev2'];
1077    }
1078
1079    if ($rev1 && !file_exists(mediaFN($image, $rev1))) $rev1 = false;
1080    if ($rev2 && !file_exists(mediaFN($image, $rev2))) $rev2 = false;
1081
1082    if($rev1 && $rev2){            // two specific revisions wanted
1083        // make sure order is correct (older on the left)
1084        if($rev1 < $rev2){
1085            $l_rev = $rev1;
1086            $r_rev = $rev2;
1087        }else{
1088            $l_rev = $rev2;
1089            $r_rev = $rev1;
1090        }
1091    }elseif($rev1){                // single revision given, compare to current
1092        $r_rev = '';
1093        $l_rev = $rev1;
1094    }else{                        // no revision was given, compare previous to current
1095        $r_rev = '';
1096        $revs = getRevisions($image, 0, 1, 8192, true);
1097        if (file_exists(mediaFN($image, $revs[0]))) {
1098            $l_rev = $revs[0];
1099        } else {
1100            $l_rev = '';
1101        }
1102    }
1103
1104    // prepare event data
1105    $data[0] = $image;
1106    $data[1] = $l_rev;
1107    $data[2] = $r_rev;
1108    $data[3] = $ns;
1109    $data[4] = $auth;
1110    $data[5] = $fromajax;
1111
1112    // trigger event
1113    return trigger_event('MEDIA_DIFF', $data, '_media_file_diff', true);
1114
1115}
1116
1117function _media_file_diff($data) {
1118    if(is_array($data) && count($data)===6) {
1119        return media_file_diff($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
1120    } else {
1121        return false;
1122    }
1123}
1124
1125/**
1126 * Shows difference between two revisions of image
1127 *
1128 * @author Kate Arzamastseva <pshns@ukr.net>
1129 */
1130function media_file_diff($image, $l_rev, $r_rev, $ns, $auth, $fromajax){
1131    global $lang, $config_cascade;
1132
1133    $l_meta = new JpegMeta(mediaFN($image, $l_rev));
1134    $r_meta = new JpegMeta(mediaFN($image, $r_rev));
1135
1136    $is_img = preg_match("/\.(jpe?g|gif|png)$/", $image);
1137    if ($is_img) {
1138        $l_size = media_image_preview_size($image, $l_rev, $l_meta);
1139        $r_size = media_image_preview_size($image, $r_rev, $r_meta);
1140        $is_img = ($l_size && $r_size && ($l_size[0] >= 30 || $r_size[0] >= 30));
1141
1142        $difftype = $_REQUEST['difftype'];
1143
1144        if (!$fromajax) {
1145            $form = new Doku_Form(array('action'=>media_managerURL(array(), '&'),
1146                'id' => 'mediamanager__form_diffview'));
1147            $form->addElement('<input type="hidden" name="rev2[]" value="'.$l_rev.'" ></input>');
1148            $form->addElement('<input type="hidden" name="rev2[]" value="'.$r_rev.'" ></input>');
1149            $form->addHidden('mediado', 'diff');
1150            $form->printForm();
1151
1152            echo '<div id="mediamanager__diff" >';
1153        }
1154
1155        if ($difftype == 'opacity' || $difftype == 'portions') {
1156            media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $difftype);
1157            if (!$fromajax) echo '</div>';
1158            return '';
1159        }
1160    }
1161
1162    echo '<div class="mediamanager-preview">';
1163    echo '<ul id="mediamanager__diff_table">';
1164
1165    echo '<li>';
1166    media_preview($image, $auth, $l_rev, $l_meta);
1167    echo '</li>';
1168
1169    echo '<li>';
1170    media_preview($image, $auth, $r_rev, $r_meta);
1171    echo '</li>';
1172
1173    echo '<li>';
1174    media_preview_buttons($image, $auth, $l_rev);
1175    echo '</li>';
1176
1177    echo '<li>';
1178    media_preview_buttons($image, $auth, $r_rev);
1179    echo '</li>';
1180
1181    $l_tags = media_file_tags($l_meta);
1182    $r_tags = media_file_tags($r_meta);
1183    foreach ($l_tags as $key => $l_tag) {
1184        if ($l_tag['value'] != $r_tags[$key]['value']) {
1185            $r_tags[$key]['class'] = 'highlighted';
1186            $l_tags[$key]['class'] = 'highlighted';
1187        } else if (!$l_tag['value'] || !$r_tags[$key]['value']) {
1188            unset($r_tags[$key]);
1189            unset($l_tags[$key]);
1190        }
1191    }
1192
1193    foreach(array($l_tags,$r_tags) as $tags){
1194        echo '<li><div>';
1195
1196        echo '<dl class="img_tags">';
1197        foreach($tags as $tag){
1198            $value = cleanText($tag['value']);
1199            if (!$value) $value = '-';
1200            echo '<dt>'.$lang[$tag['tag'][1]].':</dt>';
1201            echo '<dd class="'.$tag['class'].'" >';
1202            if ($tag['tag'][2] == 'date') echo dformat($value);
1203            else echo hsc($value);
1204            echo '</dd>';
1205        }
1206        echo '</dl>';
1207
1208        echo '</div></li>';
1209    }
1210
1211    echo '</ul>';
1212    echo '</div>';
1213
1214    if ($is_img && !$fromajax) echo '</div>';
1215}
1216
1217/**
1218 * Prints two images side by side
1219 * and slider
1220 *
1221 * @author Kate Arzamastseva <pshns@ukr.net>
1222 * @param string $image
1223 * @param int $l_rev
1224 * @param int $r_rev
1225 * @param array $l_size
1226 * @param array $r_size
1227 * @param string $type
1228 */
1229function media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $type) {
1230    if ($l_size != $r_size) {
1231        if ($r_size[0] > $l_size[0]) {
1232            $l_size = $r_size;
1233        }
1234    }
1235
1236    echo '<div class="mediamanager-preview">';
1237
1238    $l_more = array('rev' => $l_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1239    $r_more = array('rev' => $r_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1240
1241    $l_src = ml($image, $l_more);
1242    $r_src = ml($image, $r_more);
1243
1244    // slider
1245    echo '<div id="mediamanager__'.$type.'_slider" style="max-width: '.($l_size[0]-20).'px;" ></div>';
1246
1247    // two image's in div's
1248    echo '<div id="mediamanager__diff_layout">';
1249    echo '<div id="mediamanager__diff_'.$type.'_image1" style="max-width: '.$l_size[0].'px;">';
1250    echo '<img src="'.$l_src.'" alt="" />';
1251    echo '</div>';
1252    echo '<div id="mediamanager__diff_'.$type.'_image2" style="max-width: '.$l_size[0].'px;">';
1253    echo '<img src="'.$r_src.'" alt="" />';
1254    echo '</div>';
1255    echo '</div>';
1256
1257    echo '</div>';
1258}
1259
1260/**
1261 * Restores an old revision of a media file
1262 *
1263 * @param string $image
1264 * @param int $rev
1265 * @param int $auth
1266 * @return string - file's id
1267 * @author Kate Arzamastseva <pshns@ukr.net>
1268 */
1269function media_restore($image, $rev, $auth){
1270    global $conf;
1271    if ($auth < AUTH_DELETE || !$conf['mediarevisions']) return false;
1272    $removed = (!file_exists(mediaFN($image)) && file_exists(mediaMetaFN($image, '.changes')));
1273    if (!$image || (!file_exists(mediaFN($image)) && !$removed)) return false;
1274    if (!$rev || !file_exists(mediaFN($image, $rev))) return false;
1275    list($iext,$imime,$dl) = mimetype($image);
1276    $res = media_upload_finish(mediaFN($image, $rev),
1277        mediaFN($image),
1278        $image,
1279        $imime,
1280        true,
1281        'copy');
1282    if (is_array($res)) {
1283        msg($res[0], $res[1]);
1284        return false;
1285    }
1286    return $res;
1287}
1288
1289/**
1290 * List all files found by the search request
1291 *
1292 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1293 * @author Andreas Gohr <gohr@cosmocode.de>
1294 * @author Kate Arzamastseva <pshns@ukr.net>
1295 * @triggers MEDIA_SEARCH
1296 */
1297function media_searchlist($query,$ns,$auth=null,$fullscreen=false){
1298    global $conf;
1299    global $lang;
1300
1301    $ns = cleanID($ns);
1302
1303    if ($query) {
1304        $evdata = array(
1305                'ns'    => $ns,
1306                'data'  => array(),
1307                'query' => $query
1308                );
1309        $evt = new Doku_Event('MEDIA_SEARCH', $evdata);
1310        if ($evt->advise_before()) {
1311            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
1312            $pattern = '/'.preg_quote($evdata['query'],'/').'/i';
1313            search($evdata['data'],
1314                    $conf['mediadir'],
1315                    'search_media',
1316                    array('showmsg'=>false,'pattern'=>$pattern),
1317                    $dir);
1318        }
1319        $evt->advise_after();
1320        unset($evt);
1321    }
1322
1323    if (!$fullscreen) {
1324        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
1325        media_searchform($ns,$query);
1326    }
1327
1328    if(!count($evdata['data'])){
1329        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
1330    }else {
1331        if ($fullscreen) {
1332            $view = $_REQUEST['view'];
1333            if ($view == 'list') {
1334                echo '<ul class="mediamanager-list" id="mediamanager__file_list">';
1335            } else {
1336                echo '<ul class="mediamanager-thumbs" id="mediamanager__file_list">';
1337            }
1338        }
1339        foreach($evdata['data'] as $item){
1340            if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
1341            else media_printfile_thumbs($item,$item['perm'],false,true);
1342        }
1343        if ($fullscreen) echo '</ul>';
1344    }
1345}
1346
1347/**
1348 * Print action links for a file depending on filetype
1349 * and available permissions
1350 */
1351function media_fileactions($item,$auth){
1352    global $lang;
1353
1354    // view button
1355    $link = ml($item['id'],'',true);
1356    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
1357        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
1358
1359    // no further actions if not writable
1360    if(!$item['writable']) return;
1361
1362    // delete button
1363    if($auth >= AUTH_DELETE){
1364        $link = DOKU_BASE.'lib/exe/mediamanager.php?delete='.rawurlencode($item['id']).
1365            '&amp;sectok='.getSecurityToken();
1366        echo ' <a href="'.$link.'" class="btn_media_delete" title="'.$item['id'].'">'.
1367            '<img src="'.DOKU_BASE.'lib/images/trash.png" alt="'.$lang['btn_delete'].'" '.
1368            'title="'.$lang['btn_delete'].'" class="btn" /></a>';
1369    }
1370
1371    // edit button
1372    if($auth >= AUTH_UPLOAD && $item['isimg'] && $item['meta']->getField('File.Mime') == 'image/jpeg'){
1373        $link = DOKU_BASE.'lib/exe/mediamanager.php?edit='.rawurlencode($item['id']);
1374        echo ' <a href="'.$link.'">'.
1375            '<img src="'.DOKU_BASE.'lib/images/pencil.png" alt="'.$lang['metaedit'].'" '.
1376            'title="'.$lang['metaedit'].'" class="btn" /></a>';
1377    }
1378
1379}
1380
1381/**
1382 * Formats and prints one file in the list
1383 */
1384function media_printfile($item,$auth,$jump,$display_namespace=false){
1385    global $lang;
1386    global $conf;
1387
1388    // Prepare zebra coloring
1389    // I always wanted to use this variable name :-D
1390    static $twibble = 1;
1391    $twibble *= -1;
1392    $zebra = ($twibble == -1) ? 'odd' : 'even';
1393
1394    // Automatically jump to recent action
1395    if($jump == $item['id']) {
1396        $jump = ' id="scroll__here" ';
1397    }else{
1398        $jump = '';
1399    }
1400
1401    // Prepare fileicons
1402    list($ext,$mime,$dl) = mimetype($item['file'],false);
1403    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
1404    $class = 'select mediafile mf_'.$class;
1405
1406    // Prepare filename
1407    $file = utf8_decodeFN($item['file']);
1408
1409    // Prepare info
1410    $info = '';
1411    if($item['isimg']){
1412        $info .= (int) $item['meta']->getField('File.Width');
1413        $info .= '&#215;';
1414        $info .= (int) $item['meta']->getField('File.Height');
1415        $info .= ' ';
1416    }
1417    $info .= '<i>'.dformat($item['mtime']).'</i>';
1418    $info .= ' ';
1419    $info .= filesize_h($item['size']);
1420
1421    // output
1422    echo '<div class="'.$zebra.'"'.$jump.'>'.NL;
1423    if (!$display_namespace) {
1424        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
1425    } else {
1426        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
1427    }
1428    echo '<span class="info">('.$info.')</span>'.NL;
1429    media_fileactions($item,$auth);
1430    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
1431    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
1432    echo '</div>';
1433    if($item['isimg']) media_printimgdetail($item);
1434    echo '<div class="clearer"></div>'.NL;
1435    echo '</div>'.NL;
1436}
1437
1438function media_printicon($filename){
1439    list($ext,$mime,$dl) = mimetype(mediaFN($filename),false);
1440
1441    if (@file_exists(DOKU_INC.'lib/images/fileicons/'.$ext.'.png')) {
1442        $icon = DOKU_BASE.'lib/images/fileicons/'.$ext.'.png';
1443    } else {
1444        $icon = DOKU_BASE.'lib/images/fileicons/file.png';
1445    }
1446
1447    return '<img src="'.$icon.'" alt="'.$filename.'" class="icon" />';
1448
1449}
1450
1451/**
1452 * Formats and prints one file in the list in the thumbnails view
1453 *
1454 * @author Kate Arzamastseva <pshns@ukr.net>
1455 */
1456function media_printfile_thumbs($item,$auth,$jump=false,$display_namespace=false){
1457    global $lang;
1458    global $conf;
1459
1460    // Prepare filename
1461    $file = utf8_decodeFN($item['file']);
1462
1463    // output
1464    echo '<li><div>';
1465
1466    if($item['isimg']) {
1467        media_printimgdetail($item, true);
1468
1469    } else {
1470        echo '<a name="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1471            media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']))).'"><span>';
1472        echo media_printicon($item['id']);
1473        echo '</span></a>';
1474    }
1475    //echo '<input type=checkbox />';
1476    if (!$display_namespace) {
1477        $name = hsc($file);
1478    } else {
1479        $name = hsc($item['id']);
1480    }
1481    echo '<a href="'.media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']))).'" name=
1482        "h_:'.$item['id'].'" class="name">'.$name.'</a>';
1483
1484    if($item['isimg']){
1485        $size = '';
1486        $size .= (int) $item['meta']->getField('File.Width');
1487        $size .= '&#215;';
1488        $size .= (int) $item['meta']->getField('File.Height');
1489        echo '<span class="size">'.$size.'</span>';
1490    } else {
1491        echo '<span class="size">&nbsp;</span>';
1492    }
1493    $date = dformat($item['mtime']);
1494    echo '<span class="date">'.$date.'</span>';
1495    $filesize = filesize_h($item['size']);
1496    echo '<span class="filesize">'.$filesize.'</span>';
1497    echo '<div class="clearer"></div>';
1498    echo '</div></li>'.NL;
1499}
1500
1501/**
1502 * Prints a thumbnail and metainfos
1503 */
1504function media_printimgdetail($item, $fullscreen=false){
1505    // prepare thumbnail
1506    if (!$fullscreen) {
1507        $size_array[] = 120;
1508    } else {
1509        $size_array = array(90, 40);
1510    }
1511    foreach ($size_array as $index => $size) {
1512        $w = (int) $item['meta']->getField('File.Width');
1513        $h = (int) $item['meta']->getField('File.Height');
1514        if($w>$size || $h>$size){
1515            if (!$fullscreen) {
1516                $ratio = $item['meta']->getResizeRatio($size);
1517            } else {
1518                $ratio = $item['meta']->getResizeRatio($size,$size);
1519            }
1520            $w = floor($w * $ratio);
1521            $h = floor($h * $ratio);
1522        }
1523        $src = ml($item['id'],array('w'=>$w,'h'=>$h,'t'=>$item['mtime']));
1524        $p = array();
1525        if (!$fullscreen) {
1526            $p['width']  = $w;
1527            $p['height'] = $h;
1528        }
1529        $p['alt']    = $item['id'];
1530        $p['class']  = 'thumb';
1531        $att = buildAttributes($p);
1532
1533        // output
1534        if ($fullscreen) {
1535            echo '<a name="d_:'.$item['id'].'" class="image'.$index.'" title="'.$item['id'].'" href="'.
1536                media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']))).'">';
1537            echo '<span><img src="'.$src.'" '.$att.' /></span>';
1538            echo '</a>';
1539        }
1540    }
1541
1542    if ($fullscreen) return '';
1543
1544    echo '<div class="detail">';
1545    echo '<div class="thumb">';
1546    echo '<a name="d_:'.$item['id'].'" class="select">';
1547    echo '<img src="'.$src.'" '.$att.' />';
1548    echo '</a>';
1549    echo '</div>';
1550
1551    // read EXIF/IPTC data
1552    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
1553    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
1554                'EXIF.TIFFImageDescription',
1555                'EXIF.TIFFUserComment'));
1556    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
1557    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
1558
1559    // print EXIF/IPTC data
1560    if($t || $d || $k ){
1561        echo '<p>';
1562        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
1563        if($d) echo htmlspecialchars($d).'<br />';
1564        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
1565        echo '</p>';
1566    }
1567    echo '</div>';
1568}
1569
1570/**
1571 * Build link based on the current, adding/rewriting
1572 * parameters
1573 *
1574 * @author Kate Arzamastseva <pshns@ukr.net>
1575 * @param array $params
1576 * @param string $amp - separator
1577 * @return string - link
1578 */
1579function media_managerURL($params=false, $amp='&amp;', $abs=false) {
1580    global $conf;
1581    global $ID;
1582
1583    $gets = array('do' => 'media');
1584    $media_manager_params = array('tab_files', 'tab_details', 'image', 'ns', 'view');
1585    foreach ($media_manager_params as $x) {
1586        if (isset($_REQUEST[$x])) $gets[$x] = $_REQUEST[$x];
1587    }
1588
1589    if ($params) {
1590        foreach ($params as $k => $v) {
1591            $gets[$k] = $v;
1592        }
1593    }
1594    unset($gets['id']);
1595    if ($gets['delete']) {
1596        unset($gets['image']);
1597        unset($gets['tab_details']);
1598    }
1599
1600    return wl($ID,$gets,$abs,$amp);
1601}
1602
1603/**
1604 * Print the media upload form if permissions are correct
1605 *
1606 * @author Andreas Gohr <andi@splitbrain.org>
1607 * @author Kate Arzamastseva <pshns@ukr.net>
1608 */
1609function media_uploadform($ns, $auth, $fullscreen = false){
1610    global $lang, $conf;
1611
1612    if($auth < AUTH_UPLOAD) {
1613        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
1614        return;
1615    }
1616    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
1617
1618    $update = false;
1619    $id = '';
1620    if ($auth >= $auth_ow && $fullscreen && $_REQUEST['mediado'] == 'update') {
1621        $update = true;
1622        $id = cleanID($_REQUEST['image']);
1623    }
1624
1625    // The default HTML upload form
1626    $params = array('id'      => 'dw__upload',
1627                    'enctype' => 'multipart/form-data');
1628    if (!$fullscreen) {
1629        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1630    } else {
1631        $params['action'] = media_managerURL(array('tab_files' => 'files',
1632            'tab_details' => 'view'), '&');
1633    }
1634
1635    $form = new Doku_Form($params);
1636    if (!$fullscreen) echo '<div class="upload">' . $lang['mediaupload'] . '</div>';
1637    $form->addElement(formSecurityToken());
1638    $form->addHidden('ns', hsc($ns));
1639    $form->addElement(form_makeOpenTag('p'));
1640    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
1641    $form->addElement(form_makeCloseTag('p'));
1642    $form->addElement(form_makeOpenTag('p'));
1643    $form->addElement(form_makeTextField('mediaid', noNS($id), $lang['txt_filename'].':', 'upload__name'));
1644    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
1645    $form->addElement(form_makeCloseTag('p'));
1646
1647    if($auth >= $auth_ow){
1648        $form->addElement(form_makeOpenTag('p'));
1649        $attrs = array();
1650        if ($update) $attrs['checked'] = 'checked';
1651        $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check', $attrs));
1652        $form->addElement(form_makeCloseTag('p'));
1653    }
1654
1655    echo '<div id="mediamanager__uploader">';
1656    html_form('upload', $form);
1657    echo '</div>';
1658}
1659
1660/**
1661 * Print the search field form
1662 *
1663 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1664 * @author Kate Arzamastseva <pshns@ukr.net>
1665 */
1666function media_searchform($ns,$query='',$fullscreen=false){
1667    global $lang;
1668
1669    // The default HTML search form
1670    $params = array('id' => 'dw__mediasearch');
1671    if (!$fullscreen) $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1672    else $params['action'] = media_managerURL(array(), '&');
1673    $form = new Doku_Form($params);
1674    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediasearch'] . '</div>');
1675    $form->addElement(formSecurityToken());
1676    $form->addHidden('ns', $ns);
1677    if (!$fullscreen) $form->addHidden('do', 'searchlist');
1678    else $form->addHidden('mediado', 'searchlist');
1679    $form->addElement(form_makeOpenTag('p'));
1680    $form->addElement(form_makeTextField('q', $query,$lang['searchmedia'],'','',array('title'=>sprintf($lang['searchmedia_in'],hsc($ns).':*'))));
1681    $form->addElement(form_makeButton('submit', '', $lang['btn_search']));
1682    $form->addElement(form_makeCloseTag('p'));
1683    html_form('searchmedia', $form);
1684}
1685
1686/**
1687 * Build a tree outline of available media namespaces
1688 *
1689 * @author Andreas Gohr <andi@splitbrain.org>
1690 */
1691function media_nstree($ns){
1692    global $conf;
1693    global $lang;
1694
1695    // currently selected namespace
1696    $ns  = cleanID($ns);
1697    if(empty($ns)){
1698        global $ID;
1699        $ns = dirname(str_replace(':','/',$ID));
1700        if($ns == '.') $ns ='';
1701    }
1702    $ns  = utf8_encodeFN(str_replace(':','/',$ns));
1703
1704    $data = array();
1705    search($data,$conf['mediadir'],'search_index',array('ns' => $ns, 'nofiles' => true));
1706
1707    // wrap a list with the root level around the other namespaces
1708    array_unshift($data, array('level' => 0, 'id' => '', 'open' =>'true',
1709                               'label' => '['.$lang['mediaroot'].']'));
1710
1711    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
1712    echo '</li>';
1713
1714    echo '</ul>';
1715}
1716
1717/**
1718 * Userfunction for html_buildlist
1719 *
1720 * Prints a media namespace tree item
1721 *
1722 * @author Andreas Gohr <andi@splitbrain.org>
1723 */
1724function media_nstree_item($item){
1725    $pos   = strrpos($item['id'], ':');
1726    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
1727    if(!$item['label']) $item['label'] = $label;
1728
1729    $ret  = '';
1730    if (!($_REQUEST['do'] == 'media'))
1731    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
1732    else $ret .= '<a href="'.media_managerURL(array('ns' => idfilter($item['id']), 'tab_files' => 'files'))
1733        .'" class="idx_dir">';
1734    $ret .= $item['label'];
1735    $ret .= '</a>';
1736    return $ret;
1737}
1738
1739/**
1740 * Userfunction for html_buildlist
1741 *
1742 * Prints a media namespace tree item opener
1743 *
1744 * @author Andreas Gohr <andi@splitbrain.org>
1745 */
1746function media_nstree_li($item){
1747    $class='media level'.$item['level'];
1748    if($item['open']){
1749        $class .= ' open';
1750        $img   = DOKU_BASE.'lib/images/minus.gif';
1751        $alt   = '&minus;';
1752    }else{
1753        $class .= ' closed';
1754        $img   = DOKU_BASE.'lib/images/plus.gif';
1755        $alt   = '+';
1756    }
1757    // TODO: only deliver an image if it actually has a subtree...
1758    return '<li class="'.$class.'">'.
1759        '<img src="'.$img.'" alt="'.$alt.'" />';
1760}
1761
1762/**
1763 * Resizes the given image to the given size
1764 *
1765 * @author  Andreas Gohr <andi@splitbrain.org>
1766 */
1767function media_resize_image($file, $ext, $w, $h=0){
1768    global $conf;
1769
1770    $info = @getimagesize($file); //get original size
1771    if($info == false) return $file; // that's no image - it's a spaceship!
1772
1773    if(!$h) $h = round(($w * $info[1]) / $info[0]);
1774
1775    // we wont scale up to infinity
1776    if($w > 2000 || $h > 2000) return $file;
1777
1778    //cache
1779    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
1780    $mtime = @filemtime($local); // 0 if not exists
1781
1782    if( $mtime > filemtime($file) ||
1783            media_resize_imageIM($ext,$file,$info[0],$info[1],$local,$w,$h) ||
1784            media_resize_imageGD($ext,$file,$info[0],$info[1],$local,$w,$h) ){
1785        if($conf['fperm']) chmod($local, $conf['fperm']);
1786        return $local;
1787    }
1788    //still here? resizing failed
1789    return $file;
1790}
1791
1792/**
1793 * Crops the given image to the wanted ratio, then calls media_resize_image to scale it
1794 * to the wanted size
1795 *
1796 * Crops are centered horizontally but prefer the upper third of an vertical
1797 * image because most pics are more interesting in that area (rule of thirds)
1798 *
1799 * @author  Andreas Gohr <andi@splitbrain.org>
1800 */
1801function media_crop_image($file, $ext, $w, $h=0){
1802    global $conf;
1803
1804    if(!$h) $h = $w;
1805    $info = @getimagesize($file); //get original size
1806    if($info == false) return $file; // that's no image - it's a spaceship!
1807
1808    // calculate crop size
1809    $fr = $info[0]/$info[1];
1810    $tr = $w/$h;
1811    if($tr >= 1){
1812        if($tr > $fr){
1813            $cw = $info[0];
1814            $ch = (int) $info[0]/$tr;
1815        }else{
1816            $cw = (int) $info[1]*$tr;
1817            $ch = $info[1];
1818        }
1819    }else{
1820        if($tr < $fr){
1821            $cw = (int) $info[1]*$tr;
1822            $ch = $info[1];
1823        }else{
1824            $cw = $info[0];
1825            $ch = (int) $info[0]/$tr;
1826        }
1827    }
1828    // calculate crop offset
1829    $cx = (int) ($info[0]-$cw)/2;
1830    $cy = (int) ($info[1]-$ch)/3;
1831
1832    //cache
1833    $local = getCacheName($file,'.media.'.$cw.'x'.$ch.'.crop.'.$ext);
1834    $mtime = @filemtime($local); // 0 if not exists
1835
1836    if( $mtime > filemtime($file) ||
1837            media_crop_imageIM($ext,$file,$info[0],$info[1],$local,$cw,$ch,$cx,$cy) ||
1838            media_resize_imageGD($ext,$file,$cw,$ch,$local,$cw,$ch,$cx,$cy) ){
1839        if($conf['fperm']) chmod($local, $conf['fperm']);
1840        return media_resize_image($local,$ext, $w, $h);
1841    }
1842
1843    //still here? cropping failed
1844    return media_resize_image($file,$ext, $w, $h);
1845}
1846
1847/**
1848 * Download a remote file and return local filename
1849 *
1850 * returns false if download fails. Uses cached file if available and
1851 * wanted
1852 *
1853 * @author  Andreas Gohr <andi@splitbrain.org>
1854 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
1855 */
1856function media_get_from_URL($url,$ext,$cache){
1857    global $conf;
1858
1859    // if no cache or fetchsize just redirect
1860    if ($cache==0)           return false;
1861    if (!$conf['fetchsize']) return false;
1862
1863    $local = getCacheName(strtolower($url),".media.$ext");
1864    $mtime = @filemtime($local); // 0 if not exists
1865
1866    //decide if download needed:
1867    if( ($mtime == 0) ||                           // cache does not exist
1868            ($cache != -1 && $mtime < time()-$cache)   // 'recache' and cache has expired
1869      ){
1870        if(media_image_download($url,$local)){
1871            return $local;
1872        }else{
1873            return false;
1874        }
1875    }
1876
1877    //if cache exists use it else
1878    if($mtime) return $local;
1879
1880    //else return false
1881    return false;
1882}
1883
1884/**
1885 * Download image files
1886 *
1887 * @author Andreas Gohr <andi@splitbrain.org>
1888 */
1889function media_image_download($url,$file){
1890    global $conf;
1891    $http = new DokuHTTPClient();
1892    $http->max_bodysize = $conf['fetchsize'];
1893    $http->timeout = 25; //max. 25 sec
1894    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
1895
1896    $data = $http->get($url);
1897    if(!$data) return false;
1898
1899    $fileexists = @file_exists($file);
1900    $fp = @fopen($file,"w");
1901    if(!$fp) return false;
1902    fwrite($fp,$data);
1903    fclose($fp);
1904    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
1905
1906    // check if it is really an image
1907    $info = @getimagesize($file);
1908    if(!$info){
1909        @unlink($file);
1910        return false;
1911    }
1912
1913    return true;
1914}
1915
1916/**
1917 * resize images using external ImageMagick convert program
1918 *
1919 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
1920 * @author Andreas Gohr <andi@splitbrain.org>
1921 */
1922function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
1923    global $conf;
1924
1925    // check if convert is configured
1926    if(!$conf['im_convert']) return false;
1927
1928    // prepare command
1929    $cmd  = $conf['im_convert'];
1930    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
1931    if ($ext == 'jpg' || $ext == 'jpeg') {
1932        $cmd .= ' -quality '.$conf['jpg_quality'];
1933    }
1934    $cmd .= " $from $to";
1935
1936    @exec($cmd,$out,$retval);
1937    if ($retval == 0) return true;
1938    return false;
1939}
1940
1941/**
1942 * crop images using external ImageMagick convert program
1943 *
1944 * @author Andreas Gohr <andi@splitbrain.org>
1945 */
1946function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
1947    global $conf;
1948
1949    // check if convert is configured
1950    if(!$conf['im_convert']) return false;
1951
1952    // prepare command
1953    $cmd  = $conf['im_convert'];
1954    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
1955    if ($ext == 'jpg' || $ext == 'jpeg') {
1956        $cmd .= ' -quality '.$conf['jpg_quality'];
1957    }
1958    $cmd .= " $from $to";
1959
1960    @exec($cmd,$out,$retval);
1961    if ($retval == 0) return true;
1962    return false;
1963}
1964
1965/**
1966 * resize or crop images using PHP's libGD support
1967 *
1968 * @author Andreas Gohr <andi@splitbrain.org>
1969 * @author Sebastian Wienecke <s_wienecke@web.de>
1970 */
1971function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
1972    global $conf;
1973
1974    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
1975
1976    // check available memory
1977    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
1978        return false;
1979    }
1980
1981    // create an image of the given filetype
1982    if ($ext == 'jpg' || $ext == 'jpeg'){
1983        if(!function_exists("imagecreatefromjpeg")) return false;
1984        $image = @imagecreatefromjpeg($from);
1985    }elseif($ext == 'png') {
1986        if(!function_exists("imagecreatefrompng")) return false;
1987        $image = @imagecreatefrompng($from);
1988
1989    }elseif($ext == 'gif') {
1990        if(!function_exists("imagecreatefromgif")) return false;
1991        $image = @imagecreatefromgif($from);
1992    }
1993    if(!$image) return false;
1994
1995    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
1996        $newimg = @imagecreatetruecolor ($to_w, $to_h);
1997    }
1998    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
1999    if(!$newimg){
2000        imagedestroy($image);
2001        return false;
2002    }
2003
2004    //keep png alpha channel if possible
2005    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
2006        imagealphablending($newimg, false);
2007        imagesavealpha($newimg,true);
2008    }
2009
2010    //keep gif transparent color if possible
2011    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
2012        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
2013            $transcolorindex = @imagecolortransparent($image);
2014            if($transcolorindex >= 0 ) { //transparent color exists
2015                $transcolor = @imagecolorsforindex($image, $transcolorindex);
2016                $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
2017                @imagefill($newimg, 0, 0, $transcolorindex);
2018                @imagecolortransparent($newimg, $transcolorindex);
2019            }else{ //filling with white
2020                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2021                @imagefill($newimg, 0, 0, $whitecolorindex);
2022            }
2023        }else{ //filling with white
2024            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2025            @imagefill($newimg, 0, 0, $whitecolorindex);
2026        }
2027    }
2028
2029    //try resampling first
2030    if(function_exists("imagecopyresampled")){
2031        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
2032            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2033        }
2034    }else{
2035        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2036    }
2037
2038    $okay = false;
2039    if ($ext == 'jpg' || $ext == 'jpeg'){
2040        if(!function_exists('imagejpeg')){
2041            $okay = false;
2042        }else{
2043            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
2044        }
2045    }elseif($ext == 'png') {
2046        if(!function_exists('imagepng')){
2047            $okay = false;
2048        }else{
2049            $okay =  imagepng($newimg, $to);
2050        }
2051    }elseif($ext == 'gif') {
2052        if(!function_exists('imagegif')){
2053            $okay = false;
2054        }else{
2055            $okay = imagegif($newimg, $to);
2056        }
2057    }
2058
2059    // destroy GD image ressources
2060    if($image) imagedestroy($image);
2061    if($newimg) imagedestroy($newimg);
2062
2063    return $okay;
2064}
2065
2066/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
2067