xref: /dokuwiki/inc/media.php (revision 0fbb95872b10d1318aa1ac7be20470a2d07dd7a1) 
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    $action = media_managerURL(array('tab_details' => 'view'));
112    echo '<form action="'.$action.'" id="mediamanager__save_meta" accept-charset="utf-8" method="post" class="meta">'.NL;
113
114    formSecurityToken();
115    foreach($fields as $key => $field){
116        // get current value
117        if (empty($field[0])) continue;
118        $tags = array($field[0]);
119        if(is_array($field[3])) $tags = array_merge($tags,$field[3]);
120        $value = tpl_img_getTag($tags,'',$src);
121        $value = cleanText($value);
122
123        // prepare attributes
124        $p = array();
125        $p['class'] = 'edit';
126        $p['id']    = 'meta__'.$key;
127        $p['name']  = 'meta['.$field[0].']';
128
129        // put label
130        echo '<div class="metafield">';
131        echo '<label for="meta__'.$key.'">';
132        echo ($lang[$field[1]]) ? $lang[$field[1]] : $field[1];
133        echo ':</label>';
134
135        // put input field
136        if($field[2] == 'text'){
137            $p['value'] = $value;
138            $p['type']  = 'text';
139            $att = buildAttributes($p);
140            echo "<input $att/>".NL;
141        }else{
142            $att = buildAttributes($p);
143            echo "<textarea $att rows=\"6\" cols=\"50\">".formText($value).'</textarea>'.NL;
144        }
145        echo '</div>'.NL;
146    }
147    echo '<div class="buttons">'.NL;
148    echo '<input type="hidden" name="img" value="'.hsc($id).'" />'.NL;
149    echo '<input type="hidden" name="mediado" value="save" />';
150
151    $do = 'mediado';
152    echo '<input name="'.$do.'[save]" type="submit" value="'.$lang['btn_save'].
153        '" title="'.$lang['btn_save'].' [S]" accesskey="s" class="button" />'.NL;
154    echo '</div>'.NL;
155    echo '</form>'.NL;
156}
157
158/**
159 * Convenience function to check if a media file is still in use
160 *
161 * @author Michael Klier <chi@chimeric.de>
162 */
163function media_inuse($id) {
164    global $conf;
165    $mediareferences = array();
166    if($conf['refcheck']){
167        $mediareferences = ft_mediause($id,$conf['refshow']);
168        if(!count($mediareferences)) {
169            return false;
170        } else {
171            return $mediareferences;
172        }
173    } else {
174        return false;
175    }
176}
177
178define('DOKU_MEDIA_DELETED', 1);
179define('DOKU_MEDIA_NOT_AUTH', 2);
180define('DOKU_MEDIA_INUSE', 4);
181define('DOKU_MEDIA_EMPTY_NS', 8);
182
183/**
184 * Handles media file deletions
185 *
186 * If configured, checks for media references before deletion
187 *
188 * @author Andreas Gohr <andi@splitbrain.org>
189 * @return int One of: 0,
190                       DOKU_MEDIA_DELETED,
191                       DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS,
192                       DOKU_MEDIA_NOT_AUTH,
193                       DOKU_MEDIA_INUSE
194 */
195function media_delete($id,$auth){
196    global $lang;
197    if($auth < AUTH_DELETE) return DOKU_MEDIA_NOT_AUTH;
198    if(media_inuse($id)) return DOKU_MEDIA_INUSE;
199
200    $file = mediaFN($id);
201
202    // trigger an event - MEDIA_DELETE_FILE
203    $data['id']   = $id;
204    $data['name'] = basename($file);
205    $data['path'] = $file;
206    $data['size'] = (@file_exists($file)) ? filesize($file) : 0;
207
208    $data['unl'] = false;
209    $data['del'] = false;
210    $evt = new Doku_Event('MEDIA_DELETE_FILE',$data);
211    if ($evt->advise_before()) {
212        $old = @filemtime($file);
213        if(!@file_exists(mediaFN($id, $old)) && @file_exists($file)) {
214            // add old revision to the attic
215            media_saveOldRevision($id);
216        }
217
218        $data['unl'] = @unlink($file);
219        if($data['unl']){
220            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_DELETE, $lang['deleted']);
221            $data['del'] = io_sweepNS($id,'mediadir');
222        }
223    }
224    $evt->advise_after();
225    unset($evt);
226
227    if($data['unl'] && $data['del']){
228        return DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS;
229    }
230
231    return $data['unl'] ? DOKU_MEDIA_DELETED : 0;
232}
233
234/**
235 * Handle file uploads via XMLHttpRequest
236 *
237 * @return mixed false on error, id of the new file on success
238 */
239function media_upload_xhr($ns,$auth){
240    if(!checkSecurityToken()) return false;
241
242    $id = $_GET['qqfile'];
243    list($ext,$mime,$dl) = mimetype($id);
244    $input = fopen("php://input", "r");
245    $temp = tmpfile();
246    $realSize = stream_copy_to_stream($input, $temp);
247    fclose($input);
248    if ($realSize != (int)$_SERVER["CONTENT_LENGTH"]) return false;
249    if (!($tmp = io_mktmpdir())) return false;
250    $path = $tmp.'/'.md5($id);
251    $target = fopen($path, "w");
252    fseek($temp, 0, SEEK_SET);
253    stream_copy_to_stream($temp, $target);
254    fclose($target);
255    $res = media_save(
256        array('name' => $path,
257            'mime' => $mime,
258            'ext'  => $ext),
259        $ns.':'.$id,
260        (($_REQUEST['ow'] == 'checked') ? true : false),
261        $auth,
262        'copy'
263    );
264    unlink($path);
265    if ($tmp) dir_delete($tmp);
266    if (is_array($res)) {
267        msg($res[0], $res[1]);
268        return false;
269    }
270    return $res;
271}
272
273/**
274 * Handles media file uploads
275 *
276 * @author Andreas Gohr <andi@splitbrain.org>
277 * @author Michael Klier <chi@chimeric.de>
278 * @return mixed false on error, id of the new file on success
279 */
280function media_upload($ns,$auth,$file=false){
281    if(!checkSecurityToken()) return false;
282    global $lang;
283
284    // get file and id
285    $id   = $_POST['mediaid'];
286    if (!$file) $file = $_FILES['upload'];
287    if(empty($id)) $id = $file['name'];
288
289    // check for errors (messages are done in lib/exe/mediamanager.php)
290    if($file['error']) return false;
291
292    // check extensions
293    list($fext,$fmime,$dl) = mimetype($file['name']);
294    list($iext,$imime,$dl) = mimetype($id);
295    if($fext && !$iext){
296        // no extension specified in id - read original one
297        $id   .= '.'.$fext;
298        $imime = $fmime;
299    }elseif($fext && $fext != $iext){
300        // extension was changed, print warning
301        msg(sprintf($lang['mediaextchange'],$fext,$iext));
302    }
303
304    $res = media_save(array('name' => $file['tmp_name'],
305                            'mime' => $imime,
306                            'ext'  => $iext), $ns.':'.$id,
307                      $_REQUEST['ow'], $auth, 'move_uploaded_file');
308    if (is_array($res)) {
309        msg($res[0], $res[1]);
310        return false;
311    }
312    return $res;
313}
314
315/**
316 * This generates an action event and delegates to _media_upload_action().
317 * Action plugins are allowed to pre/postprocess the uploaded file.
318 * (The triggered event is preventable.)
319 *
320 * Event data:
321 * $data[0]     fn_tmp: the temporary file name (read from $_FILES)
322 * $data[1]     fn: the file name of the uploaded file
323 * $data[2]     id: the future directory id of the uploaded file
324 * $data[3]     imime: the mimetype of the uploaded file
325 * $data[4]     overwrite: if an existing file is going to be overwritten
326 *
327 * @triggers MEDIA_UPLOAD_FINISH
328 */
329function media_save($file, $id, $ow, $auth, $move) {
330    if($auth < AUTH_UPLOAD) {
331        return array("You don't have permissions to upload files.", -1);
332    }
333
334    if (!isset($file['mime']) || !isset($file['ext'])) {
335        list($ext, $mime) = mimetype($id);
336        if (!isset($file['mime'])) {
337            $file['mime'] = $mime;
338        }
339        if (!isset($file['ext'])) {
340            $file['ext'] = $ext;
341        }
342    }
343
344    global $lang, $conf;
345
346    // get filename
347    $id   = cleanID($id,false,true);
348    $fn   = mediaFN($id);
349
350    // get filetype regexp
351    $types = array_keys(getMimeTypes());
352    $types = array_map(create_function('$q','return preg_quote($q,"/");'),$types);
353    $regex = join('|',$types);
354
355    // because a temp file was created already
356    if(!preg_match('/\.('.$regex.')$/i',$fn)) {
357        return array($lang['uploadwrong'],-1);
358    }
359
360    //check for overwrite
361    $overwrite = @file_exists($fn);
362    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
363    if($overwrite && (!$ow || $auth < $auth_ow)) {
364        return array($lang['uploadexist'], 0);
365    }
366    // check for valid content
367    $ok = media_contentcheck($file['name'], $file['mime']);
368    if($ok == -1){
369        return array(sprintf($lang['uploadbadcontent'],'.' . $file['ext']),-1);
370    }elseif($ok == -2){
371        return array($lang['uploadspam'],-1);
372    }elseif($ok == -3){
373        return array($lang['uploadxss'],-1);
374    }
375
376    // prepare event data
377    $data[0] = $file['name'];
378    $data[1] = $fn;
379    $data[2] = $id;
380    $data[3] = $file['mime'];
381    $data[4] = $overwrite;
382    $data[5] = $move;
383
384    // trigger event
385    return trigger_event('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
386}
387
388/**
389 * Callback adapter for media_upload_finish()
390 * @author Michael Klier <chi@chimeric.de>
391 */
392function _media_upload_action($data) {
393    // fixme do further sanity tests of given data?
394    if(is_array($data) && count($data)===6) {
395        return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
396    } else {
397        return false; //callback error
398    }
399}
400
401/**
402 * Saves an uploaded media file
403 *
404 * @author Andreas Gohr <andi@splitbrain.org>
405 * @author Michael Klier <chi@chimeric.de>
406 * @author Kate Arzamastseva <pshns@ukr.net>
407 */
408function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') {
409    global $conf;
410    global $lang;
411    global $REV;
412
413    $old = @filemtime($fn);
414    if(!@file_exists(mediaFN($id, $old)) && @file_exists($fn)) {
415        // add old revision to the attic if missing
416        media_saveOldRevision($id);
417    }
418
419    // prepare directory
420    io_createNamespace($id, 'media');
421
422    if($move($fn_tmp, $fn)) {
423        @clearstatcache(true,$fn);
424        $new = @filemtime($fn);
425        // Set the correct permission here.
426        // Always chmod media because they may be saved with different permissions than expected from the php umask.
427        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
428        chmod($fn, $conf['fmode']);
429        msg($lang['uploadsucc'],1);
430        media_notify($id,$fn,$imime,$old);
431        // add a log entry to the media changelog
432        if ($REV){
433            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_REVERT, $lang['restored'], $REV);
434        } elseif ($overwrite) {
435            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT);
436        } else {
437            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
438        }
439        return $id;
440    }else{
441        return array($lang['uploadfail'],-1);
442    }
443}
444
445/**
446 * Moves the current version of media file to the media_attic
447 * directory
448 *
449 * @author Kate Arzamastseva <pshns@ukr.net>
450 * @param string $id
451 * @return int - revision date
452 */
453function media_saveOldRevision($id){
454    global $conf, $lang;
455
456    $oldf = mediaFN($id);
457    if(!@file_exists($oldf)) return '';
458    $date = filemtime($oldf);
459    if (!$conf['mediarevisions']) return $date;
460
461    if (!getRevisionInfo($id, $date, 8192, true)) {
462        // there was an external edit,
463        // there is no log entry for current version of file
464        if (!@file_exists(mediaMetaFN($id,'.changes'))) {
465            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
466        } else {
467            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_EDIT);
468        }
469    }
470
471    $newf = mediaFN($id,$date);
472    io_makeFileDir($newf);
473    if(copy($oldf, $newf)) {
474        // Set the correct permission here.
475        // Always chmod media because they may be saved with different permissions than expected from the php umask.
476        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
477        chmod($newf, $conf['fmode']);
478    }
479    return $date;
480}
481
482/**
483 * This function checks if the uploaded content is really what the
484 * mimetype says it is. We also do spam checking for text types here.
485 *
486 * We need to do this stuff because we can not rely on the browser
487 * to do this check correctly. Yes, IE is broken as usual.
488 *
489 * @author Andreas Gohr <andi@splitbrain.org>
490 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
491 * @fixme  check all 26 magic IE filetypes here?
492 */
493function media_contentcheck($file,$mime){
494    global $conf;
495    if($conf['iexssprotect']){
496        $fh = @fopen($file, 'rb');
497        if($fh){
498            $bytes = fread($fh, 256);
499            fclose($fh);
500            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
501                return -3;
502            }
503        }
504    }
505    if(substr($mime,0,6) == 'image/'){
506        $info = @getimagesize($file);
507        if($mime == 'image/gif' && $info[2] != 1){
508            return -1;
509        }elseif($mime == 'image/jpeg' && $info[2] != 2){
510            return -1;
511        }elseif($mime == 'image/png' && $info[2] != 3){
512            return -1;
513        }
514        # fixme maybe check other images types as well
515    }elseif(substr($mime,0,5) == 'text/'){
516        global $TEXT;
517        $TEXT = io_readFile($file);
518        if(checkwordblock()){
519            return -2;
520        }
521    }
522    return 0;
523}
524
525/**
526 * Send a notify mail on uploads
527 *
528 * @author Andreas Gohr <andi@splitbrain.org>
529 */
530function media_notify($id,$file,$mime,$old_rev=false){
531    global $lang;
532    global $conf;
533    global $INFO;
534    if(empty($conf['notify'])) return; //notify enabled?
535
536    $ip = clientIP();
537
538    $text = rawLocale('uploadmail');
539    $text = str_replace('@DATE@',dformat(),$text);
540    $text = str_replace('@BROWSER@',$_SERVER['HTTP_USER_AGENT'],$text);
541    $text = str_replace('@IPADDRESS@',$ip,$text);
542    $text = str_replace('@HOSTNAME@',gethostsbyaddrs($ip),$text);
543    $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
544    $text = str_replace('@USER@',$_SERVER['REMOTE_USER'],$text);
545    $text = str_replace('@MIME@',$mime,$text);
546    $text = str_replace('@MEDIA@',ml($id,'',true,'&',true),$text);
547    $text = str_replace('@SIZE@',filesize_h(filesize($file)),$text);
548    if ($old_rev && $conf['mediarevisions']) {
549        $text = str_replace('@OLD@', ml($id, "rev=$old_rev", true, '&', true), $text);
550    } else {
551        $text = str_replace('@OLD@', '', $text);
552    }
553
554    if(empty($conf['mailprefix'])) {
555        $subject = '['.$conf['title'].'] '.$lang['mail_upload'].' '.$id;
556    } else {
557        $subject = '['.$conf['mailprefix'].'] '.$lang['mail_upload'].' '.$id;
558    }
559
560    mail_send($conf['notify'],$subject,$text,$conf['mailfrom']);
561}
562
563/**
564 * List all files in a given Media namespace
565 */
566function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false,$sort=false){
567    global $conf;
568    global $lang;
569    $ns = cleanID($ns);
570
571    // check auth our self if not given (needed for ajax calls)
572    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
573
574    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
575
576    if($auth < AUTH_READ){
577        // FIXME: print permission warning here instead?
578        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
579    }else{
580        if (!$fullscreenview) media_uploadform($ns, $auth);
581
582        $dir = utf8_encodeFN(str_replace(':','/',$ns));
583        $data = array();
584        search($data,$conf['mediadir'],'search_media',
585                array('showmsg'=>true,'depth'=>1),$dir,1,$sort);
586
587        if(!count($data)){
588            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
589        }else {
590            if ($fullscreenview) {
591                $view = $_REQUEST['view'];
592                if ($view == 'list') {
593                    echo '<ul class="mediamanager-list" id="mediamanager__file_list">';
594                } else {
595                    echo '<ul class="mediamanager-thumbs" id="mediamanager__file_list">';
596                }
597            }
598            foreach($data as $item){
599                if (!$fullscreenview) {
600                    media_printfile($item,$auth,$jump);
601                } else {
602                    media_printfile_thumbs($item,$auth,$jump);
603                }
604            }
605            if ($fullscreenview) echo '</ul>';
606        }
607    }
608    if (!$fullscreenview) media_searchform($ns);
609}
610
611/**
612 * Prints mediamanager tab
613 *
614 * @author Kate Arzamastseva <pshns@ukr.net>
615 * @param string $link - tab href
616 * @param string $class - tab css class
617 * @param string $name - tab caption
618 * @param boolean $selected - is tab selected
619 */
620function media_tab($link, $class, $name, $selected=false) {
621    if ($selected) $class .= ' selected';
622    $tab = '<a href="'.$link.'" class="'.$class.'" >'.$name.'</a>';
623    echo $tab;
624}
625
626/**
627 * Prints tabs for files list actions
628 *
629 * @author Kate Arzamastseva <pshns@ukr.net>
630 * @param string $selected_tab - opened tab
631 */
632function media_tabs_files($selected_tab = ''){
633    global $lang;
634
635    echo '<div class="mediamanager-tabs" id="mediamanager__tabs_files">';
636
637    media_tab(media_managerURL(array('tab_files' => 'files')),
638        'files', $lang['mediaselect'], ($selected_tab == 'files'));
639    media_tab(media_managerURL(array('tab_files' => 'upload')),
640        'upload', $lang['media_uploadtab'], ($selected_tab == 'upload'));
641    media_tab(media_managerURL(array('tab_files' => 'search')),
642        'search', $lang['media_searchtab'], ($selected_tab == 'search'));
643
644    echo '<div class="clearer"></div>';
645    echo '</div>';
646}
647
648/**
649 * Prints tabs for files details actions
650 *
651 * @author Kate Arzamastseva <pshns@ukr.net>
652 * @param string $selected_tab - opened tab
653 */
654function media_tabs_details($image, $selected_tab = ''){
655    global $lang, $conf;
656
657    echo '<div class="mediamanager-tabs" id="mediamanager__tabs_details">';
658
659    media_tab(media_managerURL(array('tab_details' => 'view')),
660        'view', $lang['media_viewtab'], ($selected_tab == 'view'));
661
662    list($ext, $mime) = mimetype($image);
663    if ($mime == 'image/jpeg' && @file_exists(mediaFN($image))) {
664        media_tab(media_managerURL(array('tab_details' => 'edit')),
665            'edit', $lang['media_edittab'], ($selected_tab == 'edit'));
666    }
667    if ($conf['mediarevisions']) {
668        media_tab(media_managerURL(array('tab_details' => 'history')),
669            'history', $lang['media_historytab'], ($selected_tab == 'history'));
670    }
671
672    echo '<div class="clearer"></div>';
673    echo '</div>';
674}
675
676/**
677 * Prints options for the tab that displays a list of all files
678 *
679 * @author Kate Arzamastseva <pshns@ukr.net>
680 */
681function media_tab_files_options($ns, $sort){
682    global $lang;
683
684    echo '<div class="background-container">';
685
686    echo '<strong class="namespace">';
687    echo $ns ? $ns : '['.$lang['mediaroot'].']';
688    echo '</strong>';
689
690    echo '<div id="mediamanager__tabs_list">';
691
692    echo '<a href="'.media_managerURL(array('view' => 'thumbs')).'" id="mediamanager__link_thumbs" >';
693    echo $lang['media_thumbsview'];
694    echo '</a>';
695
696    echo '<a href="'.media_managerURL(array('view' => 'list')).'" id="mediamanager__link_list" >';
697    echo $lang['media_listview'];
698    echo '</a>';
699
700    echo '</div>';
701
702    echo '<div id="mediamanager__sort">';
703    $form = new Doku_Form(array('action'=>media_managerURL(array(), '&'), 'id' => 'mediamanager__form_sort'));
704    $form->addElement(form_makeListboxField(
705                        'sort',
706                        array(
707                            'name' => $lang['media_sort_name'],
708                            'date' => $lang['media_sort_date']),
709                        $sort,
710                        $lang['media_sort']));
711    $form->addElement(form_makeButton('submit', '', $lang['btn_apply']));
712    $form->printForm();
713    echo '</div>';
714
715    echo '<div class="clearer"></div>';
716    echo '</div>';
717}
718
719/**
720 * Returns type of sorting for the list of files in media manager
721 *
722 * @author Kate Arzamastseva <pshns@ukr.net>
723 * @return string - sort type
724 */
725function _media_get_sort_type() {
726    $sort = $_REQUEST['sort'];
727    if (!$sort && (strpos($_COOKIE['DOKU_PREFS'], 'sort') >= 0)) {
728        $parts = explode('#', $_COOKIE['DOKU_PREFS']);
729            for ($i = 0; $i < count($parts); $i+=2){
730                if ($parts[$i] == 'sort') $sort = $parts[$i+1];
731            }
732    }
733    return $sort;
734}
735
736/**
737 * Prints tab that displays a list of all files
738 *
739 * @author Kate Arzamastseva <pshns@ukr.net>
740 */
741function media_tab_files($ns,$auth=null,$jump='') {
742    global $lang;
743    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
744
745    $sort = _media_get_sort_type();
746    media_tab_files_options($ns, $sort);
747
748    echo '<div class="scroll-container" >';
749    if($auth < AUTH_READ){
750        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
751    }else{
752        media_filelist($ns,$auth,$jump,true,$sort);
753    }
754    echo '</div>';
755}
756
757/**
758 * Prints tab that displays uploading form
759 *
760 * @author Kate Arzamastseva <pshns@ukr.net>
761 */
762function media_tab_upload($ns,$auth=null,$jump='') {
763    global $lang;
764    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
765
766    echo '<div class="background-container">';
767    echo sprintf($lang['media_upload'], $ns ? $ns : '['.$lang['mediaroot'].']');
768    echo '</div>';
769
770    echo '<div class="scroll-container">';
771    if ($auth >= AUTH_UPLOAD) echo '<div class="upload">' . $lang['mediaupload'] . '</div>';
772    media_uploadform($ns, $auth, true);
773    echo '</div>';
774}
775
776/**
777 * Prints tab that displays search form
778 *
779 * @author Kate Arzamastseva <pshns@ukr.net>
780 */
781function media_tab_search($ns,$auth=null) {
782    global $lang;
783
784    $do = $_REQUEST['mediado'];
785    $query = $_REQUEST['q'];
786    if (!$query) $query = '';
787
788    $sort = _media_get_sort_type();
789    media_tab_files_options($ns, $sort);
790
791    echo '<div class="scroll-container">';
792    media_searchform($ns, $query, true);
793    if ($do == 'searchlist') media_searchlist($query,$ns,$auth,true,$sort);
794    echo '</div>';
795}
796
797/**
798 * Prints tab that displays mediafile details
799 *
800 * @author Kate Arzamastseva <pshns@ukr.net>
801 */
802function media_tab_view($image, $ns, $auth=null, $rev=false) {
803    global $lang, $conf;
804    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
805
806    echo '<div class="background-container">';
807    list($ext,$mime,$dl) = mimetype($image,false);
808    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
809    $class = 'select mediafile mf_'.$class;
810    echo '<span class="'.$class.'" >'.$image.'</span>';
811    echo '</div>';
812
813    echo '<div class="scroll-container">';
814    if ($image && $auth >= AUTH_READ) {
815        $meta = new JpegMeta(mediaFN($image, $rev));
816        media_preview($image, $auth, $rev, $meta);
817        media_preview_buttons($image, $auth, $rev);
818        media_details($image, $auth, $rev, $meta);
819
820    } else {
821        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>';
822    }
823    echo '</div>';
824}
825
826/**
827 * Prints tab that displays form for editing mediafile metadata
828 *
829 * @author Kate Arzamastseva <pshns@ukr.net>
830 */
831function media_tab_edit($image, $ns, $auth=null) {
832    global $lang;
833    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
834
835    echo '<div class="background-container">';
836    echo $lang['media_edit'];
837    echo '</div>';
838
839    echo '<div class="scroll-container">';
840    if ($image) {
841        list($ext, $mime) = mimetype($image);
842        if ($mime == 'image/jpeg') media_metaform($image,$auth);
843    }
844    echo '</div>';
845}
846
847/**
848 * Prints tab that displays mediafile revisions
849 *
850 * @author Kate Arzamastseva <pshns@ukr.net>
851 */
852function media_tab_history($image, $ns, $auth=null) {
853    global $lang;
854    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
855    $do = $_REQUEST['mediado'];
856
857    echo '<div class="background-container">';
858    echo $lang['media_history'];
859    echo '</div>';
860
861    echo '<div class="scroll-container">';
862    if ($auth >= AUTH_READ && $image) {
863        if ($do == 'diff'){
864            media_diff($image, $ns, $auth);
865        } else {
866            $first = isset($_REQUEST['first']) ? intval($_REQUEST['first']) : 0;
867            html_revisions($first, $image);
868        }
869    } else {
870        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
871    }
872    echo '</div>';
873}
874
875/**
876 * Prints mediafile details
877 *
878 * @author Kate Arzamastseva <pshns@ukr.net>
879 */
880function media_preview($image, $auth, $rev=false, $meta=false) {
881    global $lang;
882
883    echo '<div class="mediamanager__preview">';
884
885    $size = media_image_preview_size($image, $rev, $meta);
886
887    if ($size) {
888        $more = array();
889        if ($rev) {
890            $more['rev'] = $rev;
891        } else {
892            $t = @filemtime(mediaFN($image));
893            $more['t'] = $t;
894        }
895
896        $more['w'] = $size[0];
897        $more['h'] = $size[1];
898        $src = ml($image, $more);
899        echo '<img src="'.$src.'" alt="'.$image.'" style="max-width: '.$size[0].'px;" />';
900    }
901
902    echo '</div>';
903}
904
905/**
906 * Prints mediafile action buttons
907 *
908 * @author Kate Arzamastseva <pshns@ukr.net>
909 */
910function media_preview_buttons($image, $auth, $rev=false) {
911    global $lang, $conf;
912
913    echo '<div class="mediamanager__preview_buttons">';
914
915    $more = '';
916    if ($rev) {
917        $more = "rev=$rev";
918    } else {
919        $t = @filemtime(mediaFN($image));
920        $more = "t=$t";
921    }
922    $link = ml($image,$more,true,'&');
923
924    if (@file_exists(mediaFN($image, $rev))) {
925
926        // view original file button
927        $form = new Doku_Form(array('action'=>$link, 'target'=>'_blank'));
928        $form->addElement(form_makeButton('submit','',$lang['mediaview']));
929        $form->printForm();
930    }
931
932    if($auth >= AUTH_DELETE && !$rev && @file_exists(mediaFN($image))){
933
934        // delete button
935        $form = new Doku_Form(array('id' => 'mediamanager__btn_delete',
936            'action'=>media_managerURL(array('delete' => $image), '&')));
937        $form->addElement(form_makeButton('submit','',$lang['btn_delete']));
938        $form->printForm();
939
940    }
941
942    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
943    if($auth >= $auth_ow && !$rev){
944
945        // upload new version button
946        $form = new Doku_Form(array('id' => 'mediamanager__btn_update',
947            'action'=>media_managerURL(array('image' => $image, 'mediado' => 'update'), '&')));
948        $form->addElement(form_makeButton('submit','',$lang['media_update']));
949        $form->printForm();
950    }
951
952    if($auth >= AUTH_UPLOAD && $rev && $conf['mediarevisions'] && @file_exists(mediaFN($image, $rev))){
953
954        // restore button
955        $form = new Doku_Form(array('id' => 'mediamanager__btn_restore',
956            'action'=>media_managerURL(array('image' => $image), '&')));
957        $form->addHidden('mediado','restore');
958        $form->addHidden('rev',$rev);
959        $form->addElement(form_makeButton('submit','',$lang['media_restore']));
960        $form->printForm();
961    }
962
963    echo '</div>';
964}
965
966/**
967 * Returns image width and height for mediamanager preview panel
968 *
969 * @author Kate Arzamastseva <pshns@ukr.net>
970 * @param string $image
971 * @param int $rev
972 * @param JpegMeta $meta
973 * @return array
974 */
975function media_image_preview_size($image, $rev, $meta, $size = 500) {
976    if (!preg_match("/\.(jpe?g|gif|png)$/", $image) || !file_exists(mediaFN($image, $rev))) return false;
977
978    $info = getimagesize(mediaFN($image, $rev));
979    $w = (int) $info[0];
980    $h = (int) $info[1];
981
982    if($meta && ($w > $size || $h > $size)){
983        $ratio = $meta->getResizeRatio($size, $size);
984        $w = floor($w * $ratio);
985        $h = floor($h * $ratio);
986    }
987    return array($w, $h);
988}
989
990/**
991 * Returns the requested EXIF/IPTC tag from the image meta
992 *
993 * @author Kate Arzamastseva <pshns@ukr.net>
994 * @param array $tags
995 * @param JpegMeta $meta
996 * @param string $alt
997 * @return string
998 */
999function media_getTag($tags,$meta,$alt=''){
1000    if($meta === false) return $alt;
1001    $info = $meta->getField($tags);
1002    if($info == false) return $alt;
1003    return $info;
1004}
1005
1006/**
1007 * Returns mediafile tags
1008 *
1009 * @author Kate Arzamastseva <pshns@ukr.net>
1010 * @param JpegMeta $meta
1011 * @return array
1012 */
1013function media_file_tags($meta) {
1014    global $config_cascade;
1015
1016    // load the field descriptions
1017    static $fields = null;
1018    if(is_null($fields)){
1019        $config_files = getConfigFiles('mediameta');
1020        foreach ($config_files as $config_file) {
1021            if(@file_exists($config_file)) include($config_file);
1022        }
1023    }
1024
1025    $tags = array();
1026
1027    foreach($fields as $key => $tag){
1028        $t = array();
1029        if (!empty($tag[0])) $t = array($tag[0]);
1030        if(is_array($tag[3])) $t = array_merge($t,$tag[3]);
1031        $value = media_getTag($t, $meta);
1032        $tags[] = array('tag' => $tag, 'value' => $value);
1033    }
1034
1035    return $tags;
1036}
1037
1038/**
1039 * Prints mediafile tags
1040 *
1041 * @author Kate Arzamastseva <pshns@ukr.net>
1042 */
1043function media_details($image, $auth, $rev=false, $meta=false) {
1044    global $lang;
1045
1046    if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev));
1047    $tags = media_file_tags($meta);
1048
1049    echo '<dl class="img_tags">';
1050    foreach($tags as $tag){
1051        if ($tag['value']) {
1052            $value = cleanText($tag['value']);
1053            echo '<dt>'.$lang[$tag['tag'][1]].':</dt><dd>';
1054            if ($tag['tag'][2] == 'date') echo dformat($value);
1055            else echo hsc($value);
1056            echo '</dd>';
1057        }
1058    }
1059    echo '</dl>';
1060}
1061
1062/**
1063 * Shows difference between two revisions of file
1064 *
1065 * @author Kate Arzamastseva <pshns@ukr.net>
1066 */
1067function media_diff($image, $ns, $auth, $fromajax = false) {
1068    global $lang;
1069    global $conf;
1070
1071    if ($auth < AUTH_READ || !$image || !$conf['mediarevisions']) return '';
1072
1073    $rev1 = (int) $_REQUEST['rev'];
1074
1075    if(is_array($_REQUEST['rev2'])){
1076        $rev1 = (int) $_REQUEST['rev2'][0];
1077        $rev2 = (int) $_REQUEST['rev2'][1];
1078
1079        if(!$rev1){
1080            $rev1 = $rev2;
1081            unset($rev2);
1082        }
1083    }else{
1084        $rev2 = (int) $_REQUEST['rev2'];
1085    }
1086
1087    if ($rev1 && !file_exists(mediaFN($image, $rev1))) $rev1 = false;
1088    if ($rev2 && !file_exists(mediaFN($image, $rev2))) $rev2 = false;
1089
1090    if($rev1 && $rev2){            // two specific revisions wanted
1091        // make sure order is correct (older on the left)
1092        if($rev1 < $rev2){
1093            $l_rev = $rev1;
1094            $r_rev = $rev2;
1095        }else{
1096            $l_rev = $rev2;
1097            $r_rev = $rev1;
1098        }
1099    }elseif($rev1){                // single revision given, compare to current
1100        $r_rev = '';
1101        $l_rev = $rev1;
1102    }else{                        // no revision was given, compare previous to current
1103        $r_rev = '';
1104        $revs = getRevisions($image, 0, 1, 8192, true);
1105        if (file_exists(mediaFN($image, $revs[0]))) {
1106            $l_rev = $revs[0];
1107        } else {
1108            $l_rev = '';
1109        }
1110    }
1111
1112    // prepare event data
1113    $data[0] = $image;
1114    $data[1] = $l_rev;
1115    $data[2] = $r_rev;
1116    $data[3] = $ns;
1117    $data[4] = $auth;
1118    $data[5] = $fromajax;
1119
1120    // trigger event
1121    return trigger_event('MEDIA_DIFF', $data, '_media_file_diff', true);
1122
1123}
1124
1125function _media_file_diff($data) {
1126    if(is_array($data) && count($data)===6) {
1127        return media_file_diff($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
1128    } else {
1129        return false;
1130    }
1131}
1132
1133/**
1134 * Shows difference between two revisions of image
1135 *
1136 * @author Kate Arzamastseva <pshns@ukr.net>
1137 */
1138function media_file_diff($image, $l_rev, $r_rev, $ns, $auth, $fromajax){
1139    global $lang, $config_cascade;
1140
1141    $l_meta = new JpegMeta(mediaFN($image, $l_rev));
1142    $r_meta = new JpegMeta(mediaFN($image, $r_rev));
1143
1144    $is_img = preg_match("/\.(jpe?g|gif|png)$/", $image);
1145    if ($is_img) {
1146        $l_size = media_image_preview_size($image, $l_rev, $l_meta);
1147        $r_size = media_image_preview_size($image, $r_rev, $r_meta);
1148        $is_img = ($l_size && $r_size && ($l_size[0] >= 30 || $r_size[0] >= 30));
1149
1150        $difftype = $_REQUEST['difftype'];
1151
1152        if (!$fromajax) {
1153            $form = new Doku_Form(array('action'=>media_managerURL(array(), '&'),
1154                'id' => 'mediamanager__form_diffview'));
1155            $form->addElement('<input type="hidden" name="rev2[]" value="'.$l_rev.'" ></input>');
1156            $form->addElement('<input type="hidden" name="rev2[]" value="'.$r_rev.'" ></input>');
1157            $form->addHidden('mediado', 'diff');
1158            $form->printForm();
1159
1160            echo '<div id="mediamanager__diff" >';
1161        }
1162
1163        if ($difftype == 'opacity' || $difftype == 'portions') {
1164            media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $difftype);
1165            if (!$fromajax) echo '</div>';
1166            return '';
1167        }
1168    }
1169
1170    echo '<div class="mediamanager-preview">';
1171    echo '<ul id="mediamanager__diff_table">';
1172
1173    echo '<li>';
1174    media_preview($image, $auth, $l_rev, $l_meta);
1175    echo '</li>';
1176
1177    echo '<li>';
1178    media_preview($image, $auth, $r_rev, $r_meta);
1179    echo '</li>';
1180
1181    echo '<li>';
1182    media_preview_buttons($image, $auth, $l_rev);
1183    echo '</li>';
1184
1185    echo '<li>';
1186    media_preview_buttons($image, $auth, $r_rev);
1187    echo '</li>';
1188
1189    $l_tags = media_file_tags($l_meta);
1190    $r_tags = media_file_tags($r_meta);
1191    foreach ($l_tags as $key => $l_tag) {
1192        if ($l_tag['value'] != $r_tags[$key]['value']) {
1193            $r_tags[$key]['class'] = 'highlighted';
1194            $l_tags[$key]['class'] = 'highlighted';
1195        } else if (!$l_tag['value'] || !$r_tags[$key]['value']) {
1196            unset($r_tags[$key]);
1197            unset($l_tags[$key]);
1198        }
1199    }
1200
1201    foreach(array($l_tags,$r_tags) as $tags){
1202        echo '<li><div>';
1203
1204        echo '<dl class="img_tags">';
1205        foreach($tags as $tag){
1206            $value = cleanText($tag['value']);
1207            if (!$value) $value = '-';
1208            echo '<dt>'.$lang[$tag['tag'][1]].':</dt>';
1209            echo '<dd class="'.$tag['class'].'" >';
1210            if ($tag['tag'][2] == 'date') echo dformat($value);
1211            else echo hsc($value);
1212            echo '</dd>';
1213        }
1214        echo '</dl>';
1215
1216        echo '</div></li>';
1217    }
1218
1219    echo '</ul>';
1220    echo '</div>';
1221
1222    if ($is_img && !$fromajax) echo '</div>';
1223}
1224
1225/**
1226 * Prints two images side by side
1227 * and slider
1228 *
1229 * @author Kate Arzamastseva <pshns@ukr.net>
1230 * @param string $image
1231 * @param int $l_rev
1232 * @param int $r_rev
1233 * @param array $l_size
1234 * @param array $r_size
1235 * @param string $type
1236 */
1237function media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $type) {
1238    if ($l_size != $r_size) {
1239        if ($r_size[0] > $l_size[0]) {
1240            $l_size = $r_size;
1241        }
1242    }
1243
1244    echo '<div class="mediamanager-preview">';
1245
1246    $l_more = array('rev' => $l_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1247    $r_more = array('rev' => $r_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1248
1249    $l_src = ml($image, $l_more);
1250    $r_src = ml($image, $r_more);
1251
1252    // slider
1253    echo '<div id="mediamanager__'.$type.'_slider" style="max-width: '.($l_size[0]-20).'px;" ></div>';
1254
1255    // two image's in div's
1256    echo '<div id="mediamanager__diff_layout">';
1257    echo '<div id="mediamanager__diff_'.$type.'_image1" style="max-width: '.$l_size[0].'px;">';
1258    echo '<img src="'.$l_src.'" alt="" />';
1259    echo '</div>';
1260    echo '<div id="mediamanager__diff_'.$type.'_image2" style="max-width: '.$l_size[0].'px;">';
1261    echo '<img src="'.$r_src.'" alt="" />';
1262    echo '</div>';
1263    echo '</div>';
1264
1265    echo '</div>';
1266}
1267
1268/**
1269 * Restores an old revision of a media file
1270 *
1271 * @param string $image
1272 * @param int $rev
1273 * @param int $auth
1274 * @return string - file's id
1275 * @author Kate Arzamastseva <pshns@ukr.net>
1276 */
1277function media_restore($image, $rev, $auth){
1278    global $conf;
1279    if ($auth < AUTH_UPLOAD || !$conf['mediarevisions']) return false;
1280    $removed = (!file_exists(mediaFN($image)) && file_exists(mediaMetaFN($image, '.changes')));
1281    if (!$image || (!file_exists(mediaFN($image)) && !$removed)) return false;
1282    if (!$rev || !file_exists(mediaFN($image, $rev))) return false;
1283    list($iext,$imime,$dl) = mimetype($image);
1284    $res = media_upload_finish(mediaFN($image, $rev),
1285        mediaFN($image),
1286        $image,
1287        $imime,
1288        true,
1289        'copy');
1290    if (is_array($res)) {
1291        msg($res[0], $res[1]);
1292        return false;
1293    }
1294    return $res;
1295}
1296
1297/**
1298 * List all files found by the search request
1299 *
1300 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1301 * @author Andreas Gohr <gohr@cosmocode.de>
1302 * @author Kate Arzamastseva <pshns@ukr.net>
1303 * @triggers MEDIA_SEARCH
1304 */
1305function media_searchlist($query,$ns,$auth=null,$fullscreen=false,$sort=''){
1306    global $conf;
1307    global $lang;
1308
1309    $ns = cleanID($ns);
1310
1311    if ($query) {
1312        $evdata = array(
1313                'ns'    => $ns,
1314                'data'  => array(),
1315                'query' => $query
1316                );
1317        $evt = new Doku_Event('MEDIA_SEARCH', $evdata);
1318        if ($evt->advise_before()) {
1319            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
1320            $pattern = '/'.preg_quote($evdata['query'],'/').'/i';
1321            search($evdata['data'],
1322                    $conf['mediadir'],
1323                    'search_media',
1324                    array('showmsg'=>false,'pattern'=>$pattern),
1325                    $dir);
1326        }
1327
1328        $data = array();
1329        foreach ($evdata['data'] as $k => $v) {
1330            $data[$k] = ($sort == 'date') ? $v['mtime'] : $v['id'];
1331        }
1332        array_multisort($data, SORT_DESC, SORT_NUMERIC, $evdata['data']);
1333
1334        $evt->advise_after();
1335        unset($evt);
1336    }
1337
1338    if (!$fullscreen) {
1339        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
1340        media_searchform($ns,$query);
1341    }
1342
1343    if(!count($evdata['data'])){
1344        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
1345    }else {
1346        if ($fullscreen) {
1347            $view = $_REQUEST['view'];
1348            if ($view == 'list') {
1349                echo '<ul class="mediamanager-list" id="mediamanager__file_list">';
1350            } else {
1351                echo '<ul class="mediamanager-thumbs" id="mediamanager__file_list">';
1352            }
1353        }
1354        foreach($evdata['data'] as $item){
1355            if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
1356            else media_printfile_thumbs($item,$item['perm'],false,true);
1357        }
1358        if ($fullscreen) echo '</ul>';
1359    }
1360}
1361
1362/**
1363 * Formats and prints one file in the list
1364 */
1365function media_printfile($item,$auth,$jump,$display_namespace=false){
1366    global $lang;
1367    global $conf;
1368
1369    // Prepare zebra coloring
1370    // I always wanted to use this variable name :-D
1371    static $twibble = 1;
1372    $twibble *= -1;
1373    $zebra = ($twibble == -1) ? 'odd' : 'even';
1374
1375    // Automatically jump to recent action
1376    if($jump == $item['id']) {
1377        $jump = ' id="scroll__here" ';
1378    }else{
1379        $jump = '';
1380    }
1381
1382    // Prepare fileicons
1383    list($ext,$mime,$dl) = mimetype($item['file'],false);
1384    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
1385    $class = 'select mediafile mf_'.$class;
1386
1387    // Prepare filename
1388    $file = utf8_decodeFN($item['file']);
1389
1390    // Prepare info
1391    $info = '';
1392    if($item['isimg']){
1393        $info .= (int) $item['meta']->getField('File.Width');
1394        $info .= '&#215;';
1395        $info .= (int) $item['meta']->getField('File.Height');
1396        $info .= ' ';
1397    }
1398    $info .= '<i>'.dformat($item['mtime']).'</i>';
1399    $info .= ' ';
1400    $info .= filesize_h($item['size']);
1401
1402    // output
1403    echo '<div class="'.$zebra.'"'.$jump.'>'.NL;
1404    if (!$display_namespace) {
1405        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
1406    } else {
1407        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
1408    }
1409    echo '<span class="info">('.$info.')</span>'.NL;
1410
1411    // view button
1412    $link = ml($item['id'],'',true);
1413    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
1414        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
1415
1416    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
1417    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
1418    echo '</div>';
1419    if($item['isimg']) media_printimgdetail($item);
1420    echo '<div class="clearer"></div>'.NL;
1421    echo '</div>'.NL;
1422}
1423
1424function media_printicon($filename){
1425    list($ext,$mime,$dl) = mimetype(mediaFN($filename),false);
1426
1427    if (@file_exists(DOKU_INC.'lib/images/fileicons/'.$ext.'.png')) {
1428        $icon = DOKU_BASE.'lib/images/fileicons/'.$ext.'.png';
1429    } else {
1430        $icon = DOKU_BASE.'lib/images/fileicons/file.png';
1431    }
1432
1433    return '<img src="'.$icon.'" alt="'.$filename.'" class="icon" />';
1434
1435}
1436
1437/**
1438 * Formats and prints one file in the list in the thumbnails view
1439 *
1440 * @author Kate Arzamastseva <pshns@ukr.net>
1441 */
1442function media_printfile_thumbs($item,$auth,$jump=false,$display_namespace=false){
1443    global $lang;
1444    global $conf;
1445
1446    // Prepare filename
1447    $file = utf8_decodeFN($item['file']);
1448
1449    // output
1450    echo '<li><div>';
1451
1452    if($item['isimg']) {
1453        media_printimgdetail($item, true);
1454
1455    } else {
1456        echo '<a name="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1457            media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1458            'tab_details' => 'view')).'"><span>';
1459        echo media_printicon($item['id']);
1460        echo '</span></a>';
1461    }
1462    //echo '<input type=checkbox />';
1463    if (!$display_namespace) {
1464        $name = hsc($file);
1465    } else {
1466        $name = hsc($item['id']);
1467    }
1468    echo '<a href="'.media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1469        'tab_details' => 'view')).'" name="h_:'.$item['id'].'" class="name">'.$name.'</a>';
1470
1471    if($item['isimg']){
1472        $size = '';
1473        $size .= (int) $item['meta']->getField('File.Width');
1474        $size .= '&#215;';
1475        $size .= (int) $item['meta']->getField('File.Height');
1476        echo '<span class="size">'.$size.'</span>';
1477    } else {
1478        echo '<span class="size">&nbsp;</span>';
1479    }
1480    $date = dformat($item['mtime']);
1481    echo '<span class="date">'.$date.'</span>';
1482    $filesize = filesize_h($item['size']);
1483    echo '<span class="filesize">'.$filesize.'</span>';
1484    echo '<div class="clearer"></div>';
1485    echo '</div></li>'.NL;
1486}
1487
1488/**
1489 * Prints a thumbnail and metainfos
1490 */
1491function media_printimgdetail($item, $fullscreen=false){
1492    // prepare thumbnail
1493    if (!$fullscreen) {
1494        $size_array[] = 120;
1495    } else {
1496        $size_array = array(90, 40);
1497    }
1498    foreach ($size_array as $index => $size) {
1499        $w = (int) $item['meta']->getField('File.Width');
1500        $h = (int) $item['meta']->getField('File.Height');
1501        if($w>$size || $h>$size){
1502            if (!$fullscreen) {
1503                $ratio = $item['meta']->getResizeRatio($size);
1504            } else {
1505                $ratio = $item['meta']->getResizeRatio($size,$size);
1506            }
1507            $w = floor($w * $ratio);
1508            $h = floor($h * $ratio);
1509        }
1510        $src = ml($item['id'],array('w'=>$w,'h'=>$h,'t'=>$item['mtime']));
1511        $p = array();
1512        if (!$fullscreen) {
1513            $p['width']  = $w;
1514            $p['height'] = $h;
1515        }
1516        $p['alt']    = $item['id'];
1517        $p['class']  = 'thumb';
1518        $att = buildAttributes($p);
1519
1520        // output
1521        if ($fullscreen) {
1522            echo '<a name="'.($index ? 'd' : 'l').'_:'.$item['id'].'" class="image'.$index.'" title="'.$item['id'].'" href="'.
1523                media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']), 'tab_details' => 'view')).'">';
1524            echo '<span><img src="'.$src.'" '.$att.' /></span>';
1525            echo '</a>';
1526        }
1527    }
1528
1529    if ($fullscreen) return '';
1530
1531    echo '<div class="detail">';
1532    echo '<div class="thumb">';
1533    echo '<a name="d_:'.$item['id'].'" class="select">';
1534    echo '<img src="'.$src.'" '.$att.' />';
1535    echo '</a>';
1536    echo '</div>';
1537
1538    // read EXIF/IPTC data
1539    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
1540    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
1541                'EXIF.TIFFImageDescription',
1542                'EXIF.TIFFUserComment'));
1543    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
1544    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
1545
1546    // print EXIF/IPTC data
1547    if($t || $d || $k ){
1548        echo '<p>';
1549        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
1550        if($d) echo htmlspecialchars($d).'<br />';
1551        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
1552        echo '</p>';
1553    }
1554    echo '</div>';
1555}
1556
1557/**
1558 * Build link based on the current, adding/rewriting
1559 * parameters
1560 *
1561 * @author Kate Arzamastseva <pshns@ukr.net>
1562 * @param array $params
1563 * @param string $amp - separator
1564 * @return string - link
1565 */
1566function media_managerURL($params=false, $amp='&amp;', $abs=false, $params_array=false) {
1567    global $conf;
1568    global $ID;
1569
1570    $gets = array('do' => 'media');
1571    $media_manager_params = array('tab_files', 'tab_details', 'image', 'ns', 'view');
1572    foreach ($media_manager_params as $x) {
1573        if (isset($_REQUEST[$x])) $gets[$x] = $_REQUEST[$x];
1574    }
1575
1576    if ($params) {
1577        foreach ($params as $k => $v) {
1578            $gets[$k] = $v;
1579        }
1580    }
1581    unset($gets['id']);
1582    if ($gets['delete']) {
1583        unset($gets['image']);
1584        unset($gets['tab_details']);
1585    }
1586
1587    if ($params_array) return $gets;
1588
1589    return wl($ID,$gets,$abs,$amp);
1590}
1591
1592/**
1593 * Print the media upload form if permissions are correct
1594 *
1595 * @author Andreas Gohr <andi@splitbrain.org>
1596 * @author Kate Arzamastseva <pshns@ukr.net>
1597 */
1598function media_uploadform($ns, $auth, $fullscreen = false){
1599    global $lang, $conf;
1600
1601    if($auth < AUTH_UPLOAD) {
1602        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
1603        return;
1604    }
1605    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
1606
1607    $update = false;
1608    $id = '';
1609    if ($auth >= $auth_ow && $fullscreen && $_REQUEST['mediado'] == 'update') {
1610        $update = true;
1611        $id = cleanID($_REQUEST['image']);
1612    }
1613
1614    // The default HTML upload form
1615    $params = array('id'      => 'dw__upload',
1616                    'enctype' => 'multipart/form-data');
1617    if (!$fullscreen) {
1618        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1619    } else {
1620        $params['action'] = media_managerURL(array('tab_files' => 'files',
1621            'tab_details' => 'view'), '&');
1622    }
1623
1624    $form = new Doku_Form($params);
1625    if (!$fullscreen) echo '<div class="upload">' . $lang['mediaupload'] . '</div>';
1626    $form->addElement(formSecurityToken());
1627    $form->addHidden('ns', hsc($ns));
1628    $form->addElement(form_makeOpenTag('p'));
1629    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
1630    $form->addElement(form_makeCloseTag('p'));
1631    $form->addElement(form_makeOpenTag('p'));
1632    $form->addElement(form_makeTextField('mediaid', noNS($id), $lang['txt_filename'].':', 'upload__name'));
1633    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
1634    $form->addElement(form_makeCloseTag('p'));
1635
1636    if($auth >= $auth_ow){
1637        $form->addElement(form_makeOpenTag('p'));
1638        $attrs = array();
1639        if ($update) $attrs['checked'] = 'checked';
1640        $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check', $attrs));
1641        $form->addElement(form_makeCloseTag('p'));
1642    }
1643
1644    echo '<div id="mediamanager__uploader">';
1645    html_form('upload', $form);
1646    echo '</div>';
1647}
1648
1649/**
1650 * Print the search field form
1651 *
1652 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1653 * @author Kate Arzamastseva <pshns@ukr.net>
1654 */
1655function media_searchform($ns,$query='',$fullscreen=false){
1656    global $lang;
1657
1658    // The default HTML search form
1659    $params = array('id' => 'dw__mediasearch');
1660    if (!$fullscreen) $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1661    else $params['action'] = media_managerURL(array(), '&');
1662    $form = new Doku_Form($params);
1663    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediasearch'] . '</div>');
1664    $form->addElement(formSecurityToken());
1665    $form->addHidden('ns', $ns);
1666    if (!$fullscreen) $form->addHidden('do', 'searchlist');
1667    else $form->addHidden('mediado', 'searchlist');
1668    $form->addElement(form_makeOpenTag('p'));
1669    $form->addElement(form_makeTextField('q', $query,$lang['searchmedia'],'mediamanager__sort_textfield','',array('title'=>sprintf($lang['searchmedia_in'],hsc($ns).':*'))));
1670    $form->addElement(form_makeButton('submit', '', $lang['btn_search']));
1671    $form->addElement(form_makeCloseTag('p'));
1672    html_form('searchmedia', $form);
1673}
1674
1675/**
1676 * Build a tree outline of available media namespaces
1677 *
1678 * @author Andreas Gohr <andi@splitbrain.org>
1679 */
1680function media_nstree($ns){
1681    global $conf;
1682    global $lang;
1683
1684    // currently selected namespace
1685    $ns  = cleanID($ns);
1686    if(empty($ns)){
1687        global $ID;
1688        $ns = dirname(str_replace(':','/',$ID));
1689        if($ns == '.') $ns ='';
1690    }
1691    $ns  = utf8_encodeFN(str_replace(':','/',$ns));
1692
1693    $data = array();
1694    search($data,$conf['mediadir'],'search_index',array('ns' => $ns, 'nofiles' => true));
1695
1696    // wrap a list with the root level around the other namespaces
1697    array_unshift($data, array('level' => 0, 'id' => '', 'open' =>'true',
1698                               'label' => '['.$lang['mediaroot'].']'));
1699
1700    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
1701}
1702
1703/**
1704 * Userfunction for html_buildlist
1705 *
1706 * Prints a media namespace tree item
1707 *
1708 * @author Andreas Gohr <andi@splitbrain.org>
1709 */
1710function media_nstree_item($item){
1711    $pos   = strrpos($item['id'], ':');
1712    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
1713    if(!$item['label']) $item['label'] = $label;
1714
1715    $ret  = '';
1716    if (!($_REQUEST['do'] == 'media'))
1717    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
1718    else $ret .= '<a href="'.media_managerURL(array('ns' => idfilter($item['id']), 'tab_files' => 'files'))
1719        .'" class="idx_dir">';
1720    $ret .= $item['label'];
1721    $ret .= '</a>';
1722    return $ret;
1723}
1724
1725/**
1726 * Userfunction for html_buildlist
1727 *
1728 * Prints a media namespace tree item opener
1729 *
1730 * @author Andreas Gohr <andi@splitbrain.org>
1731 */
1732function media_nstree_li($item){
1733    $class='media level'.$item['level'];
1734    if($item['open']){
1735        $class .= ' open';
1736        $img   = DOKU_BASE.'lib/images/minus.gif';
1737        $alt   = '&minus;';
1738    }else{
1739        $class .= ' closed';
1740        $img   = DOKU_BASE.'lib/images/plus.gif';
1741        $alt   = '+';
1742    }
1743    // TODO: only deliver an image if it actually has a subtree...
1744    return '<li class="'.$class.'">'.
1745        '<img src="'.$img.'" alt="'.$alt.'" />';
1746}
1747
1748/**
1749 * Resizes the given image to the given size
1750 *
1751 * @author  Andreas Gohr <andi@splitbrain.org>
1752 */
1753function media_resize_image($file, $ext, $w, $h=0){
1754    global $conf;
1755
1756    $info = @getimagesize($file); //get original size
1757    if($info == false) return $file; // that's no image - it's a spaceship!
1758
1759    if(!$h) $h = round(($w * $info[1]) / $info[0]);
1760
1761    // we wont scale up to infinity
1762    if($w > 2000 || $h > 2000) return $file;
1763
1764    //cache
1765    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
1766    $mtime = @filemtime($local); // 0 if not exists
1767
1768    if( $mtime > filemtime($file) ||
1769            media_resize_imageIM($ext,$file,$info[0],$info[1],$local,$w,$h) ||
1770            media_resize_imageGD($ext,$file,$info[0],$info[1],$local,$w,$h) ){
1771        if($conf['fperm']) chmod($local, $conf['fperm']);
1772        return $local;
1773    }
1774    //still here? resizing failed
1775    return $file;
1776}
1777
1778/**
1779 * Crops the given image to the wanted ratio, then calls media_resize_image to scale it
1780 * to the wanted size
1781 *
1782 * Crops are centered horizontally but prefer the upper third of an vertical
1783 * image because most pics are more interesting in that area (rule of thirds)
1784 *
1785 * @author  Andreas Gohr <andi@splitbrain.org>
1786 */
1787function media_crop_image($file, $ext, $w, $h=0){
1788    global $conf;
1789
1790    if(!$h) $h = $w;
1791    $info = @getimagesize($file); //get original size
1792    if($info == false) return $file; // that's no image - it's a spaceship!
1793
1794    // calculate crop size
1795    $fr = $info[0]/$info[1];
1796    $tr = $w/$h;
1797    if($tr >= 1){
1798        if($tr > $fr){
1799            $cw = $info[0];
1800            $ch = (int) $info[0]/$tr;
1801        }else{
1802            $cw = (int) $info[1]*$tr;
1803            $ch = $info[1];
1804        }
1805    }else{
1806        if($tr < $fr){
1807            $cw = (int) $info[1]*$tr;
1808            $ch = $info[1];
1809        }else{
1810            $cw = $info[0];
1811            $ch = (int) $info[0]/$tr;
1812        }
1813    }
1814    // calculate crop offset
1815    $cx = (int) ($info[0]-$cw)/2;
1816    $cy = (int) ($info[1]-$ch)/3;
1817
1818    //cache
1819    $local = getCacheName($file,'.media.'.$cw.'x'.$ch.'.crop.'.$ext);
1820    $mtime = @filemtime($local); // 0 if not exists
1821
1822    if( $mtime > filemtime($file) ||
1823            media_crop_imageIM($ext,$file,$info[0],$info[1],$local,$cw,$ch,$cx,$cy) ||
1824            media_resize_imageGD($ext,$file,$cw,$ch,$local,$cw,$ch,$cx,$cy) ){
1825        if($conf['fperm']) chmod($local, $conf['fperm']);
1826        return media_resize_image($local,$ext, $w, $h);
1827    }
1828
1829    //still here? cropping failed
1830    return media_resize_image($file,$ext, $w, $h);
1831}
1832
1833/**
1834 * Download a remote file and return local filename
1835 *
1836 * returns false if download fails. Uses cached file if available and
1837 * wanted
1838 *
1839 * @author  Andreas Gohr <andi@splitbrain.org>
1840 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
1841 */
1842function media_get_from_URL($url,$ext,$cache){
1843    global $conf;
1844
1845    // if no cache or fetchsize just redirect
1846    if ($cache==0)           return false;
1847    if (!$conf['fetchsize']) return false;
1848
1849    $local = getCacheName(strtolower($url),".media.$ext");
1850    $mtime = @filemtime($local); // 0 if not exists
1851
1852    //decide if download needed:
1853    if( ($mtime == 0) ||                           // cache does not exist
1854            ($cache != -1 && $mtime < time()-$cache)   // 'recache' and cache has expired
1855      ){
1856        if(media_image_download($url,$local)){
1857            return $local;
1858        }else{
1859            return false;
1860        }
1861    }
1862
1863    //if cache exists use it else
1864    if($mtime) return $local;
1865
1866    //else return false
1867    return false;
1868}
1869
1870/**
1871 * Download image files
1872 *
1873 * @author Andreas Gohr <andi@splitbrain.org>
1874 */
1875function media_image_download($url,$file){
1876    global $conf;
1877    $http = new DokuHTTPClient();
1878    $http->max_bodysize = $conf['fetchsize'];
1879    $http->timeout = 25; //max. 25 sec
1880    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
1881
1882    $data = $http->get($url);
1883    if(!$data) return false;
1884
1885    $fileexists = @file_exists($file);
1886    $fp = @fopen($file,"w");
1887    if(!$fp) return false;
1888    fwrite($fp,$data);
1889    fclose($fp);
1890    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
1891
1892    // check if it is really an image
1893    $info = @getimagesize($file);
1894    if(!$info){
1895        @unlink($file);
1896        return false;
1897    }
1898
1899    return true;
1900}
1901
1902/**
1903 * resize images using external ImageMagick convert program
1904 *
1905 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
1906 * @author Andreas Gohr <andi@splitbrain.org>
1907 */
1908function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
1909    global $conf;
1910
1911    // check if convert is configured
1912    if(!$conf['im_convert']) return false;
1913
1914    // prepare command
1915    $cmd  = $conf['im_convert'];
1916    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
1917    if ($ext == 'jpg' || $ext == 'jpeg') {
1918        $cmd .= ' -quality '.$conf['jpg_quality'];
1919    }
1920    $cmd .= " $from $to";
1921
1922    @exec($cmd,$out,$retval);
1923    if ($retval == 0) return true;
1924    return false;
1925}
1926
1927/**
1928 * crop images using external ImageMagick convert program
1929 *
1930 * @author Andreas Gohr <andi@splitbrain.org>
1931 */
1932function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
1933    global $conf;
1934
1935    // check if convert is configured
1936    if(!$conf['im_convert']) return false;
1937
1938    // prepare command
1939    $cmd  = $conf['im_convert'];
1940    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
1941    if ($ext == 'jpg' || $ext == 'jpeg') {
1942        $cmd .= ' -quality '.$conf['jpg_quality'];
1943    }
1944    $cmd .= " $from $to";
1945
1946    @exec($cmd,$out,$retval);
1947    if ($retval == 0) return true;
1948    return false;
1949}
1950
1951/**
1952 * resize or crop images using PHP's libGD support
1953 *
1954 * @author Andreas Gohr <andi@splitbrain.org>
1955 * @author Sebastian Wienecke <s_wienecke@web.de>
1956 */
1957function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
1958    global $conf;
1959
1960    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
1961
1962    // check available memory
1963    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
1964        return false;
1965    }
1966
1967    // create an image of the given filetype
1968    if ($ext == 'jpg' || $ext == 'jpeg'){
1969        if(!function_exists("imagecreatefromjpeg")) return false;
1970        $image = @imagecreatefromjpeg($from);
1971    }elseif($ext == 'png') {
1972        if(!function_exists("imagecreatefrompng")) return false;
1973        $image = @imagecreatefrompng($from);
1974
1975    }elseif($ext == 'gif') {
1976        if(!function_exists("imagecreatefromgif")) return false;
1977        $image = @imagecreatefromgif($from);
1978    }
1979    if(!$image) return false;
1980
1981    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
1982        $newimg = @imagecreatetruecolor ($to_w, $to_h);
1983    }
1984    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
1985    if(!$newimg){
1986        imagedestroy($image);
1987        return false;
1988    }
1989
1990    //keep png alpha channel if possible
1991    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
1992        imagealphablending($newimg, false);
1993        imagesavealpha($newimg,true);
1994    }
1995
1996    //keep gif transparent color if possible
1997    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
1998        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
1999            $transcolorindex = @imagecolortransparent($image);
2000            if($transcolorindex >= 0 ) { //transparent color exists
2001                $transcolor = @imagecolorsforindex($image, $transcolorindex);
2002                $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
2003                @imagefill($newimg, 0, 0, $transcolorindex);
2004                @imagecolortransparent($newimg, $transcolorindex);
2005            }else{ //filling with white
2006                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2007                @imagefill($newimg, 0, 0, $whitecolorindex);
2008            }
2009        }else{ //filling with white
2010            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2011            @imagefill($newimg, 0, 0, $whitecolorindex);
2012        }
2013    }
2014
2015    //try resampling first
2016    if(function_exists("imagecopyresampled")){
2017        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
2018            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2019        }
2020    }else{
2021        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2022    }
2023
2024    $okay = false;
2025    if ($ext == 'jpg' || $ext == 'jpeg'){
2026        if(!function_exists('imagejpeg')){
2027            $okay = false;
2028        }else{
2029            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
2030        }
2031    }elseif($ext == 'png') {
2032        if(!function_exists('imagepng')){
2033            $okay = false;
2034        }else{
2035            $okay =  imagepng($newimg, $to);
2036        }
2037    }elseif($ext == 'gif') {
2038        if(!function_exists('imagegif')){
2039            $okay = false;
2040        }else{
2041            $okay = imagegif($newimg, $to);
2042        }
2043    }
2044
2045    // destroy GD image ressources
2046    if($image) imagedestroy($image);
2047    if($newimg) imagedestroy($newimg);
2048
2049    return $okay;
2050}
2051
2052/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
2053