xref: /dokuwiki/inc/media.php (revision 990578f7e4f53f6b079ceaf02dee9bd72aab1b77) 
1<?php
2/**
3 * All output and handler function needed for the media management popup
4 *
5 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author     Andreas Gohr <andi@splitbrain.org>
7 */
8
9if(!defined('DOKU_INC')) die('meh.');
10if(!defined('NL')) define('NL',"\n");
11
12/**
13 * Lists pages which currently use a media file selected for deletion
14 *
15 * References uses the same visual as search results and share
16 * their CSS tags except pagenames won't be links.
17 *
18 * @author Matthias Grimm <matthiasgrimm@users.sourceforge.net>
19 */
20function media_filesinuse($data,$id){
21    global $lang;
22    echo '<h1>'.$lang['reference'].' <code>'.hsc(noNS($id)).'</code></h1>';
23    echo '<p>'.hsc($lang['ref_inuse']).'</p>';
24
25    $hidden=0; //count of hits without read permission
26    foreach($data as $row){
27        if(auth_quickaclcheck($row) >= AUTH_READ && isVisiblePage($row)){
28            echo '<div class="search_result">';
29            echo '<span class="mediaref_ref">'.hsc($row).'</span>';
30            echo '</div>';
31        }else
32            $hidden++;
33    }
34    if ($hidden){
35        print '<div class="mediaref_hidden">'.$lang['ref_hidden'].'</div>';
36    }
37}
38
39/**
40 * Handles the saving of image meta data
41 *
42 * @author Andreas Gohr <andi@splitbrain.org>
43 * @author Kate Arzamastseva <pshns@ukr.net>
44 */
45function media_metasave($id,$auth,$data){
46    if($auth < AUTH_UPLOAD) return false;
47    if(!checkSecurityToken()) return false;
48    global $lang;
49    global $conf;
50    $src = mediaFN($id);
51
52    $meta = new JpegMeta($src);
53    $meta->_parseAll();
54
55    foreach($data as $key => $val){
56        $val=trim($val);
57        if(empty($val)){
58            $meta->deleteField($key);
59        }else{
60            $meta->setField($key,$val);
61        }
62    }
63
64    $old = @filemtime($src);
65    if(!@file_exists(mediaFN($id, $old)) && @file_exists($src)) {
66        // add old revision to the attic
67        media_saveOldRevision($id);
68    }
69
70    if($meta->save()){
71        if($conf['fperm']) chmod($src, $conf['fperm']);
72
73        $new = @filemtime($src);
74        // add a log entry to the media changelog
75        addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT, $lang['media_meta_edited']);
76
77        msg($lang['metasaveok'],1);
78        return $id;
79    }else{
80        msg($lang['metasaveerr'],-1);
81        return false;
82    }
83}
84
85/**
86 * Display the form to edit image meta data
87 *
88 * @author Andreas Gohr <andi@splitbrain.org>
89 * @author Kate Arzamastseva <pshns@ukr.net>
90 */
91function media_metaform($id,$auth){
92    global $lang, $config_cascade;
93
94    if($auth < AUTH_UPLOAD) {
95        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
96        return false;
97    }
98
99    // load the field descriptions
100    static $fields = null;
101    if(is_null($fields)){
102        $config_files = getConfigFiles('mediameta');
103        foreach ($config_files as $config_file) {
104            if(@file_exists($config_file)) include($config_file);
105        }
106    }
107
108    $src = mediaFN($id);
109
110    // output
111    $form = new Doku_Form(array('action' => media_managerURL(array('tab_details' => 'view'), '&'),
112                                'class' => 'meta'));
113    $form->addHidden('img', $id);
114    $form->addHidden('mediado', 'save');
115    foreach($fields as $key => $field){
116        // get current value
117        if (empty($field[0])) continue;
118        $tags = array($field[0]);
119        if(is_array($field[3])) $tags = array_merge($tags,$field[3]);
120        $value = tpl_img_getTag($tags,'',$src);
121        $value = cleanText($value);
122
123        // prepare attributes
124        $p = array();
125        $p['class'] = 'edit';
126        $p['id']    = 'meta__'.$key;
127        $p['name']  = 'meta['.$field[0].']';
128        $p_attrs    = array('class' => 'edit');
129
130        $form->addElement('<div class="row">');
131        if($field[2] == 'text'){
132            $form->addElement(form_makeField('text', $p['name'], $value, ($lang[$field[1]]) ? $lang[$field[1]] : $field[1] . ':', $p['id'], $p['class'], $p_attrs));
133        }else{
134            $att = buildAttributes($p);
135            $form->addElement('<label for="meta__'.$key.'">'.$lang[$field[1]].'</label>');
136            $form->addElement("<textarea $att rows=\"6\" cols=\"50\">".formText($value).'</textarea>');
137        }
138        $form->addElement('</div>'.NL);
139    }
140    $form->addElement('<div class="buttons">');
141    $form->addElement(form_makeButton('submit', '', $lang['btn_save'], array('accesskey' => 's', 'name' => 'mediado[save]')));
142    $form->addElement('</div>'.NL);
143    $form->printForm();
144}
145
146/**
147 * Convenience function to check if a media file is still in use
148 *
149 * @author Michael Klier <chi@chimeric.de>
150 */
151function media_inuse($id) {
152    global $conf;
153    $mediareferences = array();
154    if($conf['refcheck']){
155        $mediareferences = ft_mediause($id,$conf['refshow']);
156        if(!count($mediareferences)) {
157            return false;
158        } else {
159            return $mediareferences;
160        }
161    } else {
162        return false;
163    }
164}
165
166define('DOKU_MEDIA_DELETED', 1);
167define('DOKU_MEDIA_NOT_AUTH', 2);
168define('DOKU_MEDIA_INUSE', 4);
169define('DOKU_MEDIA_EMPTY_NS', 8);
170
171/**
172 * Handles media file deletions
173 *
174 * If configured, checks for media references before deletion
175 *
176 * @author Andreas Gohr <andi@splitbrain.org>
177 * @return int One of: 0,
178 *                     DOKU_MEDIA_DELETED,
179 *                     DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS,
180 *                     DOKU_MEDIA_NOT_AUTH,
181 *                     DOKU_MEDIA_INUSE
182 */
183function media_delete($id,$auth){
184    global $lang;
185    if($auth < AUTH_DELETE) return DOKU_MEDIA_NOT_AUTH;
186    if(media_inuse($id)) return DOKU_MEDIA_INUSE;
187
188    $file = mediaFN($id);
189
190    // trigger an event - MEDIA_DELETE_FILE
191    $data['id']   = $id;
192    $data['name'] = utf8_basename($file);
193    $data['path'] = $file;
194    $data['size'] = (@file_exists($file)) ? filesize($file) : 0;
195
196    $data['unl'] = false;
197    $data['del'] = false;
198    $evt = new Doku_Event('MEDIA_DELETE_FILE',$data);
199    if ($evt->advise_before()) {
200        $old = @filemtime($file);
201        if(!@file_exists(mediaFN($id, $old)) && @file_exists($file)) {
202            // add old revision to the attic
203            media_saveOldRevision($id);
204        }
205
206        $data['unl'] = @unlink($file);
207        if($data['unl']){
208            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_DELETE, $lang['deleted']);
209            $data['del'] = io_sweepNS($id,'mediadir');
210        }
211    }
212    $evt->advise_after();
213    unset($evt);
214
215    if($data['unl'] && $data['del']){
216        return DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS;
217    }
218
219    return $data['unl'] ? DOKU_MEDIA_DELETED : 0;
220}
221
222/**
223 * Handle file uploads via XMLHttpRequest
224 *
225 * @return mixed false on error, id of the new file on success
226 */
227function media_upload_xhr($ns,$auth){
228    if(!checkSecurityToken()) return false;
229    global $INPUT;
230
231    $id = $INPUT->get->str('qqfile');
232    list($ext,$mime,$dl) = mimetype($id);
233    $input = fopen("php://input", "r");
234    if (!($tmp = io_mktmpdir())) return false;
235    $path = $tmp.'/'.md5($id);
236    $target = fopen($path, "w");
237    $realSize = stream_copy_to_stream($input, $target);
238    fclose($target);
239    fclose($input);
240    if ($realSize != (int)$_SERVER["CONTENT_LENGTH"]){
241        unlink($target);
242        unlink($path);
243        return false;
244    }
245
246    $res = media_save(
247        array('name' => $path,
248            'mime' => $mime,
249            'ext'  => $ext),
250        $ns.':'.$id,
251        (($INPUT->get->str('ow') == 'checked') ? true : false),
252        $auth,
253        'copy'
254    );
255    unlink($path);
256    if ($tmp) dir_delete($tmp);
257    if (is_array($res)) {
258        msg($res[0], $res[1]);
259        return false;
260    }
261    return $res;
262}
263
264/**
265 * Handles media file uploads
266 *
267 * @author Andreas Gohr <andi@splitbrain.org>
268 * @author Michael Klier <chi@chimeric.de>
269 * @return mixed false on error, id of the new file on success
270 */
271function media_upload($ns,$auth,$file=false){
272    if(!checkSecurityToken()) return false;
273    global $lang;
274    global $INPUT;
275
276    // get file and id
277    $id   = $INPUT->post->str('mediaid');
278    if (!$file) $file = $_FILES['upload'];
279    if(empty($id)) $id = $file['name'];
280
281    // check for errors (messages are done in lib/exe/mediamanager.php)
282    if($file['error']) return false;
283
284    // check extensions
285    list($fext,$fmime,$dl) = mimetype($file['name']);
286    list($iext,$imime,$dl) = mimetype($id);
287    if($fext && !$iext){
288        // no extension specified in id - read original one
289        $id   .= '.'.$fext;
290        $imime = $fmime;
291    }elseif($fext && $fext != $iext){
292        // extension was changed, print warning
293        msg(sprintf($lang['mediaextchange'],$fext,$iext));
294    }
295
296    $res = media_save(array('name' => $file['tmp_name'],
297                            'mime' => $imime,
298                            'ext'  => $iext), $ns.':'.$id,
299                      $INPUT->post->bool('ow'), $auth, 'copy_uploaded_file');
300    if (is_array($res)) {
301        msg($res[0], $res[1]);
302        return false;
303    }
304    return $res;
305}
306
307/**
308 * An alternative to move_uploaded_file that copies
309 *
310 * Using copy, makes sure any setgid bits on the media directory are honored
311 *
312 * @see   move_uploaded_file()
313 * @param string $from
314 * @param string $to
315 * @return bool
316 */
317function copy_uploaded_file($from, $to){
318    if(!is_uploaded_file($from)) return false;
319    $ok = copy($from, $to);
320    @unlink($from);
321    return $ok;
322}
323
324/**
325 * This generates an action event and delegates to _media_upload_action().
326 * Action plugins are allowed to pre/postprocess the uploaded file.
327 * (The triggered event is preventable.)
328 *
329 * Event data:
330 * $data[0]     fn_tmp: the temporary file name (read from $_FILES)
331 * $data[1]     fn: the file name of the uploaded file
332 * $data[2]     id: the future directory id of the uploaded file
333 * $data[3]     imime: the mimetype of the uploaded file
334 * $data[4]     overwrite: if an existing file is going to be overwritten
335 *
336 * @triggers MEDIA_UPLOAD_FINISH
337 */
338function media_save($file, $id, $ow, $auth, $move) {
339    if($auth < AUTH_UPLOAD) {
340        return array("You don't have permissions to upload files.", -1);
341    }
342
343    if (!isset($file['mime']) || !isset($file['ext'])) {
344        list($ext, $mime) = mimetype($id);
345        if (!isset($file['mime'])) {
346            $file['mime'] = $mime;
347        }
348        if (!isset($file['ext'])) {
349            $file['ext'] = $ext;
350        }
351    }
352
353    global $lang, $conf;
354
355    // get filename
356    $id   = cleanID($id);
357    $fn   = mediaFN($id);
358
359    // get filetype regexp
360    $types = array_keys(getMimeTypes());
361    $types = array_map(create_function('$q','return preg_quote($q,"/");'),$types);
362    $regex = join('|',$types);
363
364    // because a temp file was created already
365    if(!preg_match('/\.('.$regex.')$/i',$fn)) {
366        return array($lang['uploadwrong'],-1);
367    }
368
369    //check for overwrite
370    $overwrite = @file_exists($fn);
371    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
372    if($overwrite && (!$ow || $auth < $auth_ow)) {
373        return array($lang['uploadexist'], 0);
374    }
375    // check for valid content
376    $ok = media_contentcheck($file['name'], $file['mime']);
377    if($ok == -1){
378        return array(sprintf($lang['uploadbadcontent'],'.' . $file['ext']),-1);
379    }elseif($ok == -2){
380        return array($lang['uploadspam'],-1);
381    }elseif($ok == -3){
382        return array($lang['uploadxss'],-1);
383    }
384
385    // prepare event data
386    $data[0] = $file['name'];
387    $data[1] = $fn;
388    $data[2] = $id;
389    $data[3] = $file['mime'];
390    $data[4] = $overwrite;
391    $data[5] = $move;
392
393    // trigger event
394    return trigger_event('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
395}
396
397/**
398 * Callback adapter for media_upload_finish()
399 * @author Michael Klier <chi@chimeric.de>
400 */
401function _media_upload_action($data) {
402    // fixme do further sanity tests of given data?
403    if(is_array($data) && count($data)===6) {
404        return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
405    } else {
406        return false; //callback error
407    }
408}
409
410/**
411 * Saves an uploaded media file
412 *
413 * @author Andreas Gohr <andi@splitbrain.org>
414 * @author Michael Klier <chi@chimeric.de>
415 * @author Kate Arzamastseva <pshns@ukr.net>
416 */
417function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') {
418    global $conf;
419    global $lang;
420    global $REV;
421
422    $old = @filemtime($fn);
423    if(!@file_exists(mediaFN($id, $old)) && @file_exists($fn)) {
424        // add old revision to the attic if missing
425        media_saveOldRevision($id);
426    }
427
428    // prepare directory
429    io_createNamespace($id, 'media');
430
431    if($move($fn_tmp, $fn)) {
432        @clearstatcache(true,$fn);
433        $new = @filemtime($fn);
434        // Set the correct permission here.
435        // Always chmod media because they may be saved with different permissions than expected from the php umask.
436        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
437        chmod($fn, $conf['fmode']);
438        msg($lang['uploadsucc'],1);
439        media_notify($id,$fn,$imime,$old);
440        // add a log entry to the media changelog
441        if ($REV){
442            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_REVERT, sprintf($lang['restored'], dformat($REV)), $REV);
443        } elseif ($overwrite) {
444            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT);
445        } else {
446            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
447        }
448        return $id;
449    }else{
450        return array($lang['uploadfail'],-1);
451    }
452}
453
454/**
455 * Moves the current version of media file to the media_attic
456 * directory
457 *
458 * @author Kate Arzamastseva <pshns@ukr.net>
459 * @param string $id
460 * @return int - revision date
461 */
462function media_saveOldRevision($id){
463    global $conf, $lang;
464
465    $oldf = mediaFN($id);
466    if(!@file_exists($oldf)) return '';
467    $date = filemtime($oldf);
468    if (!$conf['mediarevisions']) return $date;
469
470    if (!getRevisionInfo($id, $date, 8192, true)) {
471        // there was an external edit,
472        // there is no log entry for current version of file
473        if (!@file_exists(mediaMetaFN($id,'.changes'))) {
474            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
475        } else {
476            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_EDIT);
477        }
478    }
479
480    $newf = mediaFN($id,$date);
481    io_makeFileDir($newf);
482    if(copy($oldf, $newf)) {
483        // Set the correct permission here.
484        // Always chmod media because they may be saved with different permissions than expected from the php umask.
485        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
486        chmod($newf, $conf['fmode']);
487    }
488    return $date;
489}
490
491/**
492 * This function checks if the uploaded content is really what the
493 * mimetype says it is. We also do spam checking for text types here.
494 *
495 * We need to do this stuff because we can not rely on the browser
496 * to do this check correctly. Yes, IE is broken as usual.
497 *
498 * @author Andreas Gohr <andi@splitbrain.org>
499 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
500 * @fixme  check all 26 magic IE filetypes here?
501 */
502function media_contentcheck($file,$mime){
503    global $conf;
504    if($conf['iexssprotect']){
505        $fh = @fopen($file, 'rb');
506        if($fh){
507            $bytes = fread($fh, 256);
508            fclose($fh);
509            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
510                return -3;
511            }
512        }
513    }
514    if(substr($mime,0,6) == 'image/'){
515        $info = @getimagesize($file);
516        if($mime == 'image/gif' && $info[2] != 1){
517            return -1;
518        }elseif($mime == 'image/jpeg' && $info[2] != 2){
519            return -1;
520        }elseif($mime == 'image/png' && $info[2] != 3){
521            return -1;
522        }
523        # fixme maybe check other images types as well
524    }elseif(substr($mime,0,5) == 'text/'){
525        global $TEXT;
526        $TEXT = io_readFile($file);
527        if(checkwordblock()){
528            return -2;
529        }
530    }
531    return 0;
532}
533
534/**
535 * Send a notify mail on uploads
536 *
537 * @author Andreas Gohr <andi@splitbrain.org>
538 * @fixme this should embed thumbnails of images in HTML version
539 */
540function media_notify($id,$file,$mime,$old_rev=false){
541    global $lang;
542    global $conf;
543    global $INFO;
544    if(empty($conf['notify'])) return; //notify enabled?
545
546    $text = rawLocale('uploadmail');
547    $trep = array(
548                'MIME'  => $mime,
549                'MEDIA' => ml($id,'',true,'&',true),
550                'SIZE'  => filesize_h(filesize($file)),
551            );
552
553    if ($old_rev && $conf['mediarevisions']) {
554        $trep['OLD'] = ml($id, "rev=$old_rev", true, '&', true);
555    } else {
556        $trep['OLD'] = '---';
557    }
558
559    $mail = new Mailer();
560    $mail->to($conf['notify']);
561    $mail->subject($lang['mail_upload'].' '.$id);
562    $mail->setBody($text,$trep);
563    return $mail->send();
564}
565
566/**
567 * List all files in a given Media namespace
568 */
569function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false,$sort=false){
570    global $conf;
571    global $lang;
572    $ns = cleanID($ns);
573
574    // check auth our self if not given (needed for ajax calls)
575    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
576
577    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
578
579    if($auth < AUTH_READ){
580        // FIXME: print permission warning here instead?
581        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
582    }else{
583        if (!$fullscreenview) media_uploadform($ns, $auth);
584
585        $dir = utf8_encodeFN(str_replace(':','/',$ns));
586        $data = array();
587        search($data,$conf['mediadir'],'search_media',
588                array('showmsg'=>true,'depth'=>1),$dir,1,$sort);
589
590        if(!count($data)){
591            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
592        }else {
593            if ($fullscreenview) {
594                echo '<ul class="' . _media_get_list_type() . '">';
595            }
596            foreach($data as $item){
597                if (!$fullscreenview) {
598                    media_printfile($item,$auth,$jump);
599                } else {
600                    media_printfile_thumbs($item,$auth,$jump);
601                }
602            }
603            if ($fullscreenview) echo '</ul>'.NL;
604        }
605    }
606    if (!$fullscreenview) media_searchform($ns);
607}
608
609/**
610 * Prints tabs for files list actions
611 *
612 * @author Kate Arzamastseva <pshns@ukr.net>
613 * @author Adrian Lang <mail@adrianlang.de>
614 *
615 * @param string $selected_tab - opened tab
616 */
617
618function media_tabs_files($selected_tab = ''){
619    global $lang;
620    $tabs = array();
621    foreach(array('files'  => 'mediaselect',
622                  'upload' => 'media_uploadtab',
623                  'search' => 'media_searchtab') as $tab => $caption) {
624        $tabs[$tab] = array('href'    => media_managerURL(array('tab_files' => $tab), '&'),
625                            'caption' => $lang[$caption]);
626    }
627
628    html_tabs($tabs, $selected_tab);
629}
630
631/**
632 * Prints tabs for files details actions
633 *
634 * @author Kate Arzamastseva <pshns@ukr.net>
635 * @param string $selected_tab - opened tab
636 */
637function media_tabs_details($image, $selected_tab = ''){
638    global $lang, $conf;
639
640    $tabs = array();
641    $tabs['view'] = array('href'    => media_managerURL(array('tab_details' => 'view'), '&'),
642                          'caption' => $lang['media_viewtab']);
643
644    list($ext, $mime) = mimetype($image);
645    if ($mime == 'image/jpeg' && @file_exists(mediaFN($image))) {
646        $tabs['edit'] = array('href'    => media_managerURL(array('tab_details' => 'edit'), '&'),
647                              'caption' => $lang['media_edittab']);
648    }
649    if ($conf['mediarevisions']) {
650        $tabs['history'] = array('href'    => media_managerURL(array('tab_details' => 'history'), '&'),
651                                 'caption' => $lang['media_historytab']);
652    }
653
654    html_tabs($tabs, $selected_tab);
655}
656
657/**
658 * Prints options for the tab that displays a list of all files
659 *
660 * @author Kate Arzamastseva <pshns@ukr.net>
661 */
662function media_tab_files_options(){
663    global $lang;
664    global $NS;
665    global $INPUT;
666    global $ID;
667    $form = new Doku_Form(array('class' => 'options', 'method' => 'get',
668                                'action' => wl($ID)));
669    $media_manager_params = media_managerURL(array(), '', false, true);
670    foreach($media_manager_params as $pKey => $pVal){
671        $form->addHidden($pKey, $pVal);
672    }
673    $form->addHidden('sectok', null);
674    if ($INPUT->has('q')) {
675        $form->addHidden('q', $INPUT->str('q'));
676    }
677    $form->addElement('<ul>'.NL);
678    foreach(array('list' => array('listType', array('thumbs', 'rows')),
679                  'sort' => array('sortBy', array('name', 'date')))
680            as $group => $content) {
681        $checked = "_media_get_${group}_type";
682        $checked = $checked();
683
684        $form->addElement('<li class="' . $content[0] . '">');
685        foreach($content[1] as $option) {
686            $attrs = array();
687            if ($checked == $option) {
688                $attrs['checked'] = 'checked';
689            }
690            $form->addElement(form_makeRadioField($group, $option,
691                                       $lang['media_' . $group . '_' . $option],
692                                                  $content[0] . '__' . $option,
693                                                  $option, $attrs));
694        }
695        $form->addElement('</li>'.NL);
696    }
697    $form->addElement('<li>');
698    $form->addElement(form_makeButton('submit', '', $lang['btn_apply']));
699    $form->addElement('</li>'.NL);
700    $form->addElement('</ul>'.NL);
701    $form->printForm();
702}
703
704/**
705 * Returns type of sorting for the list of files in media manager
706 *
707 * @author Kate Arzamastseva <pshns@ukr.net>
708 * @return string - sort type
709 */
710function _media_get_sort_type() {
711    return _media_get_display_param('sort', array('default' => 'name', 'date'));
712}
713
714function _media_get_list_type() {
715    return _media_get_display_param('list', array('default' => 'thumbs', 'rows'));
716}
717
718function _media_get_display_param($param, $values) {
719    global $INPUT;
720    if (in_array($INPUT->str($param), $values)) {
721        // FIXME: Set cookie
722        return $INPUT->str($param);
723    } else {
724        $val = get_doku_pref($param, $values['default']);
725        if (!in_array($val, $values)) {
726            $val = $values['default'];
727        }
728        return $val;
729    }
730}
731
732/**
733 * Prints tab that displays a list of all files
734 *
735 * @author Kate Arzamastseva <pshns@ukr.net>
736 */
737function media_tab_files($ns,$auth=null,$jump='') {
738    global $lang;
739    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
740
741    if($auth < AUTH_READ){
742        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
743    }else{
744        media_filelist($ns,$auth,$jump,true,_media_get_sort_type());
745    }
746}
747
748/**
749 * Prints tab that displays uploading form
750 *
751 * @author Kate Arzamastseva <pshns@ukr.net>
752 */
753function media_tab_upload($ns,$auth=null,$jump='') {
754    global $lang;
755    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
756
757    echo '<div class="upload">'.NL;
758    if ($auth >= AUTH_UPLOAD) {
759        echo '<p>' . $lang['mediaupload'] . '</p>';
760    }
761    media_uploadform($ns, $auth, true);
762    echo '</div>'.NL;
763}
764
765/**
766 * Prints tab that displays search form
767 *
768 * @author Kate Arzamastseva <pshns@ukr.net>
769 */
770function media_tab_search($ns,$auth=null) {
771    global $lang;
772    global $INPUT;
773
774    $do = $INPUT->str('mediado');
775    $query = $INPUT->str('q');
776    echo '<div class="search">'.NL;
777
778    media_searchform($ns, $query, true);
779    if ($do == 'searchlist' || $query) {
780        media_searchlist($query,$ns,$auth,true,_media_get_sort_type());
781    }
782    echo '</div>'.NL;
783}
784
785/**
786 * Prints tab that displays mediafile details
787 *
788 * @author Kate Arzamastseva <pshns@ukr.net>
789 */
790function media_tab_view($image, $ns, $auth=null, $rev=false) {
791    global $lang, $conf;
792    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
793
794    if ($image && $auth >= AUTH_READ) {
795        $meta = new JpegMeta(mediaFN($image, $rev));
796        media_preview($image, $auth, $rev, $meta);
797        media_preview_buttons($image, $auth, $rev);
798        media_details($image, $auth, $rev, $meta);
799
800    } else {
801        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
802    }
803}
804
805/**
806 * Prints tab that displays form for editing mediafile metadata
807 *
808 * @author Kate Arzamastseva <pshns@ukr.net>
809 */
810function media_tab_edit($image, $ns, $auth=null) {
811    global $lang;
812    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
813
814    if ($image) {
815        list($ext, $mime) = mimetype($image);
816        if ($mime == 'image/jpeg') media_metaform($image,$auth);
817    }
818}
819
820/**
821 * Prints tab that displays mediafile revisions
822 *
823 * @author Kate Arzamastseva <pshns@ukr.net>
824 */
825function media_tab_history($image, $ns, $auth=null) {
826    global $lang;
827    global $INPUT;
828
829    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
830    $do = $INPUT->str('mediado');
831
832    if ($auth >= AUTH_READ && $image) {
833        if ($do == 'diff'){
834            media_diff($image, $ns, $auth);
835        } else {
836            $first = $INPUT->int('first');
837            html_revisions($first, $image);
838        }
839    } else {
840        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
841    }
842}
843
844/**
845 * Prints mediafile details
846 *
847 * @author Kate Arzamastseva <pshns@ukr.net>
848 */
849function media_preview($image, $auth, $rev=false, $meta=false) {
850
851    $size = media_image_preview_size($image, $rev, $meta);
852
853    if ($size) {
854        global $lang;
855        echo '<div class="image">';
856
857        $more = array();
858        if ($rev) {
859            $more['rev'] = $rev;
860        } else {
861            $t = @filemtime(mediaFN($image));
862            $more['t'] = $t;
863        }
864
865        $more['w'] = $size[0];
866        $more['h'] = $size[1];
867        $src = ml($image, $more);
868
869        echo '<a href="'.$src.'" target="_blank" title="'.$lang['mediaview'].'">';
870        echo '<img src="'.$src.'" alt="" style="max-width: '.$size[0].'px;" />';
871        echo '</a>';
872
873        echo '</div>'.NL;
874    }
875}
876
877/**
878 * Prints mediafile action buttons
879 *
880 * @author Kate Arzamastseva <pshns@ukr.net>
881 */
882function media_preview_buttons($image, $auth, $rev=false) {
883    global $lang, $conf;
884
885    echo '<ul class="actions">'.NL;
886
887    if($auth >= AUTH_DELETE && !$rev && @file_exists(mediaFN($image))){
888
889        // delete button
890        $form = new Doku_Form(array('id' => 'mediamanager__btn_delete',
891            'action'=>media_managerURL(array('delete' => $image), '&')));
892        $form->addElement(form_makeButton('submit','',$lang['btn_delete']));
893        echo '<li>';
894        $form->printForm();
895        echo '</li>'.NL;
896    }
897
898    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
899    if($auth >= $auth_ow && !$rev){
900
901        // upload new version button
902        $form = new Doku_Form(array('id' => 'mediamanager__btn_update',
903            'action'=>media_managerURL(array('image' => $image, 'mediado' => 'update'), '&')));
904        $form->addElement(form_makeButton('submit','',$lang['media_update']));
905        echo '<li>';
906        $form->printForm();
907        echo '</li>'.NL;
908    }
909
910    if($auth >= AUTH_UPLOAD && $rev && $conf['mediarevisions'] && @file_exists(mediaFN($image, $rev))){
911
912        // restore button
913        $form = new Doku_Form(array('id' => 'mediamanager__btn_restore',
914            'action'=>media_managerURL(array('image' => $image), '&')));
915        $form->addHidden('mediado','restore');
916        $form->addHidden('rev',$rev);
917        $form->addElement(form_makeButton('submit','',$lang['media_restore']));
918        echo '<li>';
919        $form->printForm();
920        echo '</li>'.NL;
921    }
922
923    echo '</ul>'.NL;
924}
925
926/**
927 * Returns image width and height for mediamanager preview panel
928 *
929 * @author Kate Arzamastseva <pshns@ukr.net>
930 * @param string $image
931 * @param int $rev
932 * @param JpegMeta $meta
933 * @return array
934 */
935function media_image_preview_size($image, $rev, $meta, $size = 500) {
936    if (!preg_match("/\.(jpe?g|gif|png)$/", $image) || !file_exists(mediaFN($image, $rev))) return false;
937
938    $info = getimagesize(mediaFN($image, $rev));
939    $w = (int) $info[0];
940    $h = (int) $info[1];
941
942    if($meta && ($w > $size || $h > $size)){
943        $ratio = $meta->getResizeRatio($size, $size);
944        $w = floor($w * $ratio);
945        $h = floor($h * $ratio);
946    }
947    return array($w, $h);
948}
949
950/**
951 * Returns the requested EXIF/IPTC tag from the image meta
952 *
953 * @author Kate Arzamastseva <pshns@ukr.net>
954 * @param array $tags
955 * @param JpegMeta $meta
956 * @param string $alt
957 * @return string
958 */
959function media_getTag($tags,$meta,$alt=''){
960    if($meta === false) return $alt;
961    $info = $meta->getField($tags);
962    if($info == false) return $alt;
963    return $info;
964}
965
966/**
967 * Returns mediafile tags
968 *
969 * @author Kate Arzamastseva <pshns@ukr.net>
970 * @param JpegMeta $meta
971 * @return array
972 */
973function media_file_tags($meta) {
974    global $config_cascade;
975
976    // load the field descriptions
977    static $fields = null;
978    if(is_null($fields)){
979        $config_files = getConfigFiles('mediameta');
980        foreach ($config_files as $config_file) {
981            if(@file_exists($config_file)) include($config_file);
982        }
983    }
984
985    $tags = array();
986
987    foreach($fields as $key => $tag){
988        $t = array();
989        if (!empty($tag[0])) $t = array($tag[0]);
990        if(is_array($tag[3])) $t = array_merge($t,$tag[3]);
991        $value = media_getTag($t, $meta);
992        $tags[] = array('tag' => $tag, 'value' => $value);
993    }
994
995    return $tags;
996}
997
998/**
999 * Prints mediafile tags
1000 *
1001 * @author Kate Arzamastseva <pshns@ukr.net>
1002 */
1003function media_details($image, $auth, $rev=false, $meta=false) {
1004    global $lang;
1005
1006    if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev));
1007    $tags = media_file_tags($meta);
1008
1009    echo '<dl>'.NL;
1010    foreach($tags as $tag){
1011        if ($tag['value']) {
1012            $value = cleanText($tag['value']);
1013            echo '<dt>'.$lang[$tag['tag'][1]].':</dt><dd>';
1014            if ($tag['tag'][2] == 'date') echo dformat($value);
1015            else echo hsc($value);
1016            echo '</dd>'.NL;
1017        }
1018    }
1019    echo '</dl>'.NL;
1020}
1021
1022/**
1023 * Shows difference between two revisions of file
1024 *
1025 * @author Kate Arzamastseva <pshns@ukr.net>
1026 */
1027function media_diff($image, $ns, $auth, $fromajax = false) {
1028    global $lang;
1029    global $conf;
1030    global $INPUT;
1031
1032    if ($auth < AUTH_READ || !$image || !$conf['mediarevisions']) return '';
1033
1034    $rev1 = $INPUT->int('rev');
1035
1036    $rev2 = $INPUT->ref('rev2');
1037    if(is_array($rev2)){
1038        $rev1 = (int) $rev2[0];
1039        $rev2 = (int) $rev2[1];
1040
1041        if(!$rev1){
1042            $rev1 = $rev2;
1043            unset($rev2);
1044        }
1045    }else{
1046        $rev2 = $INPUT->int('rev2');
1047    }
1048
1049    if ($rev1 && !file_exists(mediaFN($image, $rev1))) $rev1 = false;
1050    if ($rev2 && !file_exists(mediaFN($image, $rev2))) $rev2 = false;
1051
1052    if($rev1 && $rev2){            // two specific revisions wanted
1053        // make sure order is correct (older on the left)
1054        if($rev1 < $rev2){
1055            $l_rev = $rev1;
1056            $r_rev = $rev2;
1057        }else{
1058            $l_rev = $rev2;
1059            $r_rev = $rev1;
1060        }
1061    }elseif($rev1){                // single revision given, compare to current
1062        $r_rev = '';
1063        $l_rev = $rev1;
1064    }else{                        // no revision was given, compare previous to current
1065        $r_rev = '';
1066        $revs = getRevisions($image, 0, 1, 8192, true);
1067        if (file_exists(mediaFN($image, $revs[0]))) {
1068            $l_rev = $revs[0];
1069        } else {
1070            $l_rev = '';
1071        }
1072    }
1073
1074    // prepare event data
1075    $data[0] = $image;
1076    $data[1] = $l_rev;
1077    $data[2] = $r_rev;
1078    $data[3] = $ns;
1079    $data[4] = $auth;
1080    $data[5] = $fromajax;
1081
1082    // trigger event
1083    return trigger_event('MEDIA_DIFF', $data, '_media_file_diff', true);
1084
1085}
1086
1087function _media_file_diff($data) {
1088    if(is_array($data) && count($data)===6) {
1089        return media_file_diff($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
1090    } else {
1091        return false;
1092    }
1093}
1094
1095/**
1096 * Shows difference between two revisions of image
1097 *
1098 * @author Kate Arzamastseva <pshns@ukr.net>
1099 */
1100function media_file_diff($image, $l_rev, $r_rev, $ns, $auth, $fromajax){
1101    global $lang;
1102    global $config_cascade;
1103    global $INPUT;
1104
1105    $l_meta = new JpegMeta(mediaFN($image, $l_rev));
1106    $r_meta = new JpegMeta(mediaFN($image, $r_rev));
1107
1108    $is_img = preg_match("/\.(jpe?g|gif|png)$/", $image);
1109    if ($is_img) {
1110        $l_size = media_image_preview_size($image, $l_rev, $l_meta);
1111        $r_size = media_image_preview_size($image, $r_rev, $r_meta);
1112        $is_img = ($l_size && $r_size && ($l_size[0] >= 30 || $r_size[0] >= 30));
1113
1114        $difftype = $INPUT->str('difftype');
1115
1116        if (!$fromajax) {
1117            $form = new Doku_Form(array(
1118                'action' => media_managerURL(array(), '&'),
1119                'method' => 'get',
1120                'id' => 'mediamanager__form_diffview',
1121                'class' => 'diffView'
1122            ));
1123            $form->addHidden('sectok', null);
1124            $form->addElement('<input type="hidden" name="rev2[]" value="'.$l_rev.'" ></input>');
1125            $form->addElement('<input type="hidden" name="rev2[]" value="'.$r_rev.'" ></input>');
1126            $form->addHidden('mediado', 'diff');
1127            $form->printForm();
1128
1129            echo NL.'<div id="mediamanager__diff" >'.NL;
1130        }
1131
1132        if ($difftype == 'opacity' || $difftype == 'portions') {
1133            media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $difftype);
1134            if (!$fromajax) echo '</div>';
1135            return '';
1136        }
1137    }
1138
1139    list($l_head, $r_head) = html_diff_head($l_rev, $r_rev, $image, true);
1140
1141    ?>
1142    <div class="table">
1143    <table>
1144      <tr>
1145        <th><?php echo $l_head; ?></th>
1146        <th><?php echo $r_head; ?></th>
1147      </tr>
1148    <?php
1149
1150    echo '<tr class="image">';
1151    echo '<td>';
1152    media_preview($image, $auth, $l_rev, $l_meta);
1153    echo '</td>';
1154
1155    echo '<td>';
1156    media_preview($image, $auth, $r_rev, $r_meta);
1157    echo '</td>';
1158    echo '</tr>'.NL;
1159
1160    echo '<tr class="actions">';
1161    echo '<td>';
1162    media_preview_buttons($image, $auth, $l_rev);
1163    echo '</td>';
1164
1165    echo '<td>';
1166    media_preview_buttons($image, $auth, $r_rev);
1167    echo '</td>';
1168    echo '</tr>'.NL;
1169
1170    $l_tags = media_file_tags($l_meta);
1171    $r_tags = media_file_tags($r_meta);
1172    // FIXME r_tags-only stuff
1173    foreach ($l_tags as $key => $l_tag) {
1174        if ($l_tag['value'] != $r_tags[$key]['value']) {
1175            $r_tags[$key]['highlighted'] = true;
1176            $l_tags[$key]['highlighted'] = true;
1177        } else if (!$l_tag['value'] || !$r_tags[$key]['value']) {
1178            unset($r_tags[$key]);
1179            unset($l_tags[$key]);
1180        }
1181    }
1182
1183    echo '<tr>';
1184    foreach(array($l_tags,$r_tags) as $tags){
1185        echo '<td>'.NL;
1186
1187        echo '<dl class="img_tags">';
1188        foreach($tags as $tag){
1189            $value = cleanText($tag['value']);
1190            if (!$value) $value = '-';
1191            echo '<dt>'.$lang[$tag['tag'][1]].':</dt>';
1192            echo '<dd>';
1193            if ($tag['highlighted']) {
1194                echo '<strong>';
1195            }
1196            if ($tag['tag'][2] == 'date') echo dformat($value);
1197            else echo hsc($value);
1198            if ($tag['highlighted']) {
1199                echo '</strong>';
1200            }
1201            echo '</dd>';
1202        }
1203        echo '</dl>'.NL;
1204
1205        echo '</td>';
1206    }
1207    echo '</tr>'.NL;
1208
1209    echo '</table>'.NL;
1210    echo '</div>'.NL;
1211
1212    if ($is_img && !$fromajax) echo '</div>';
1213}
1214
1215/**
1216 * Prints two images side by side
1217 * and slider
1218 *
1219 * @author Kate Arzamastseva <pshns@ukr.net>
1220 * @param string $image
1221 * @param int $l_rev
1222 * @param int $r_rev
1223 * @param array $l_size
1224 * @param array $r_size
1225 * @param string $type
1226 */
1227function media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $type) {
1228    if ($l_size != $r_size) {
1229        if ($r_size[0] > $l_size[0]) {
1230            $l_size = $r_size;
1231        }
1232    }
1233
1234    $l_more = array('rev' => $l_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1235    $r_more = array('rev' => $r_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1236
1237    $l_src = ml($image, $l_more);
1238    $r_src = ml($image, $r_more);
1239
1240    // slider
1241    echo '<div class="slider" style="max-width: '.($l_size[0]-20).'px;" ></div>'.NL;
1242
1243    // two images in divs
1244    echo '<div class="imageDiff ' . $type . '">'.NL;
1245    echo '<div class="image1" style="max-width: '.$l_size[0].'px;">';
1246    echo '<img src="'.$l_src.'" alt="" />';
1247    echo '</div>'.NL;
1248    echo '<div class="image2" style="max-width: '.$l_size[0].'px;">';
1249    echo '<img src="'.$r_src.'" alt="" />';
1250    echo '</div>'.NL;
1251    echo '</div>'.NL;
1252}
1253
1254/**
1255 * Restores an old revision of a media file
1256 *
1257 * @param string $image
1258 * @param int $rev
1259 * @param int $auth
1260 * @return string - file's id
1261 * @author Kate Arzamastseva <pshns@ukr.net>
1262 */
1263function media_restore($image, $rev, $auth){
1264    global $conf;
1265    if ($auth < AUTH_UPLOAD || !$conf['mediarevisions']) return false;
1266    $removed = (!file_exists(mediaFN($image)) && file_exists(mediaMetaFN($image, '.changes')));
1267    if (!$image || (!file_exists(mediaFN($image)) && !$removed)) return false;
1268    if (!$rev || !file_exists(mediaFN($image, $rev))) return false;
1269    list($iext,$imime,$dl) = mimetype($image);
1270    $res = media_upload_finish(mediaFN($image, $rev),
1271        mediaFN($image),
1272        $image,
1273        $imime,
1274        true,
1275        'copy');
1276    if (is_array($res)) {
1277        msg($res[0], $res[1]);
1278        return false;
1279    }
1280    return $res;
1281}
1282
1283/**
1284 * List all files found by the search request
1285 *
1286 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1287 * @author Andreas Gohr <gohr@cosmocode.de>
1288 * @author Kate Arzamastseva <pshns@ukr.net>
1289 * @triggers MEDIA_SEARCH
1290 */
1291function media_searchlist($query,$ns,$auth=null,$fullscreen=false,$sort=''){
1292    global $conf;
1293    global $lang;
1294
1295    $ns = cleanID($ns);
1296
1297    if ($query) {
1298        $evdata = array(
1299                'ns'    => $ns,
1300                'data'  => array(),
1301                'query' => $query
1302                );
1303        $evt = new Doku_Event('MEDIA_SEARCH', $evdata);
1304        if ($evt->advise_before()) {
1305            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
1306            $pattern = '/'.preg_quote($evdata['query'],'/').'/i';
1307            search($evdata['data'],
1308                    $conf['mediadir'],
1309                    'search_media',
1310                    array('showmsg'=>false,'pattern'=>$pattern),
1311                    $dir);
1312        }
1313
1314        $data = array();
1315        foreach ($evdata['data'] as $k => $v) {
1316            $data[$k] = ($sort == 'date') ? $v['mtime'] : $v['id'];
1317        }
1318        array_multisort($data, SORT_DESC, SORT_NUMERIC, $evdata['data']);
1319
1320        $evt->advise_after();
1321        unset($evt);
1322    }
1323
1324    if (!$fullscreen) {
1325        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
1326        media_searchform($ns,$query);
1327    }
1328
1329    if(!count($evdata['data'])){
1330        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
1331    }else {
1332        if ($fullscreen) {
1333            echo '<ul class="' . _media_get_list_type() . '">';
1334        }
1335        foreach($evdata['data'] as $item){
1336            if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
1337            else media_printfile_thumbs($item,$item['perm'],false,true);
1338        }
1339        if ($fullscreen) echo '</ul>'.NL;
1340    }
1341}
1342
1343/**
1344 * Formats and prints one file in the list
1345 */
1346function media_printfile($item,$auth,$jump,$display_namespace=false){
1347    global $lang;
1348    global $conf;
1349
1350    // Prepare zebra coloring
1351    // I always wanted to use this variable name :-D
1352    static $twibble = 1;
1353    $twibble *= -1;
1354    $zebra = ($twibble == -1) ? 'odd' : 'even';
1355
1356    // Automatically jump to recent action
1357    if($jump == $item['id']) {
1358        $jump = ' id="scroll__here" ';
1359    }else{
1360        $jump = '';
1361    }
1362
1363    // Prepare fileicons
1364    list($ext,$mime,$dl) = mimetype($item['file'],false);
1365    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
1366    $class = 'select mediafile mf_'.$class;
1367
1368    // Prepare filename
1369    $file = utf8_decodeFN($item['file']);
1370
1371    // Prepare info
1372    $info = '';
1373    if($item['isimg']){
1374        $info .= (int) $item['meta']->getField('File.Width');
1375        $info .= '&#215;';
1376        $info .= (int) $item['meta']->getField('File.Height');
1377        $info .= ' ';
1378    }
1379    $info .= '<i>'.dformat($item['mtime']).'</i>';
1380    $info .= ' ';
1381    $info .= filesize_h($item['size']);
1382
1383    // output
1384    echo '<div class="'.$zebra.'"'.$jump.' title="'.hsc($item['id']).'">'.NL;
1385    if (!$display_namespace) {
1386        echo '<a id="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
1387    } else {
1388        echo '<a id="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
1389    }
1390    echo '<span class="info">('.$info.')</span>'.NL;
1391
1392    // view button
1393    $link = ml($item['id'],'',true);
1394    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
1395        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
1396
1397    // mediamanager button
1398    $link = wl('',array('do'=>'media','image'=>$item['id'],'ns'=>getNS($item['id'])));
1399    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/mediamanager.png" '.
1400        'alt="'.$lang['btn_media'].'" title="'.$lang['btn_media'].'" class="btn" /></a>';
1401
1402    // delete button
1403    if($item['writable'] && $auth >= AUTH_DELETE){
1404        $link = DOKU_BASE.'lib/exe/mediamanager.php?delete='.rawurlencode($item['id']).
1405            '&amp;sectok='.getSecurityToken();
1406        echo ' <a href="'.$link.'" class="btn_media_delete" title="'.$item['id'].'">'.
1407            '<img src="'.DOKU_BASE.'lib/images/trash.png" alt="'.$lang['btn_delete'].'" '.
1408            'title="'.$lang['btn_delete'].'" class="btn" /></a>';
1409    }
1410
1411    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
1412    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
1413    echo '</div>';
1414    if($item['isimg']) media_printimgdetail($item);
1415    echo '<div class="clearer"></div>'.NL;
1416    echo '</div>'.NL;
1417}
1418
1419function media_printicon($filename){
1420    list($ext,$mime,$dl) = mimetype(mediaFN($filename),false);
1421
1422    if (@file_exists(DOKU_INC.'lib/images/fileicons/'.$ext.'.png')) {
1423        $icon = DOKU_BASE.'lib/images/fileicons/'.$ext.'.png';
1424    } else {
1425        $icon = DOKU_BASE.'lib/images/fileicons/file.png';
1426    }
1427
1428    return '<img src="'.$icon.'" alt="'.$filename.'" class="icon" />';
1429
1430}
1431
1432/**
1433 * Formats and prints one file in the list in the thumbnails view
1434 *
1435 * @author Kate Arzamastseva <pshns@ukr.net>
1436 */
1437function media_printfile_thumbs($item,$auth,$jump=false,$display_namespace=false){
1438    global $lang;
1439    global $conf;
1440
1441    // Prepare filename
1442    $file = utf8_decodeFN($item['file']);
1443
1444    // output
1445    echo '<li><dl title="'.hsc($item['id']).'">'.NL;
1446
1447        echo '<dt>';
1448    if($item['isimg']) {
1449        media_printimgdetail($item, true);
1450
1451    } else {
1452        echo '<a id="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1453            media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1454            'tab_details' => 'view')).'">';
1455        echo media_printicon($item['id']);
1456        echo '</a>';
1457    }
1458    echo '</dt>'.NL;
1459    if (!$display_namespace) {
1460        $name = hsc($file);
1461    } else {
1462        $name = hsc($item['id']);
1463    }
1464    echo '<dd class="name"><a href="'.media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1465        'tab_details' => 'view')).'" id="h_:'.$item['id'].'">'.$name.'</a></dd>'.NL;
1466
1467    if($item['isimg']){
1468        $size = '';
1469        $size .= (int) $item['meta']->getField('File.Width');
1470        $size .= '&#215;';
1471        $size .= (int) $item['meta']->getField('File.Height');
1472        echo '<dd class="size">'.$size.'</dd>'.NL;
1473    } else {
1474        echo '<dd class="size">&#160;</dd>'.NL;
1475    }
1476    $date = dformat($item['mtime']);
1477    echo '<dd class="date">'.$date.'</dd>'.NL;
1478    $filesize = filesize_h($item['size']);
1479    echo '<dd class="filesize">'.$filesize.'</dd>'.NL;
1480    echo '</dl></li>'.NL;
1481}
1482
1483/**
1484 * Prints a thumbnail and metainfos
1485 */
1486function media_printimgdetail($item, $fullscreen=false){
1487    // prepare thumbnail
1488    $size = $fullscreen ? 90 : 120;
1489
1490    $w = (int) $item['meta']->getField('File.Width');
1491    $h = (int) $item['meta']->getField('File.Height');
1492    if($w>$size || $h>$size){
1493        if (!$fullscreen) {
1494            $ratio = $item['meta']->getResizeRatio($size);
1495        } else {
1496            $ratio = $item['meta']->getResizeRatio($size,$size);
1497        }
1498        $w = floor($w * $ratio);
1499        $h = floor($h * $ratio);
1500    }
1501    $src = ml($item['id'],array('w'=>$w,'h'=>$h,'t'=>$item['mtime']));
1502    $p = array();
1503    if (!$fullscreen) {
1504        // In fullscreen mediamanager view, image resizing is done via CSS.
1505        $p['width']  = $w;
1506        $p['height'] = $h;
1507    }
1508    $p['alt']    = $item['id'];
1509    $att = buildAttributes($p);
1510
1511    // output
1512    if ($fullscreen) {
1513        echo '<a id="l_:'.$item['id'].'" class="image thumb" href="'.
1514            media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']), 'tab_details' => 'view')).'">';
1515        echo '<img src="'.$src.'" '.$att.' />';
1516        echo '</a>';
1517    }
1518
1519    if ($fullscreen) return;
1520
1521    echo '<div class="detail">';
1522    echo '<div class="thumb">';
1523    echo '<a id="d_:'.$item['id'].'" class="select">';
1524    echo '<img src="'.$src.'" '.$att.' />';
1525    echo '</a>';
1526    echo '</div>';
1527
1528    // read EXIF/IPTC data
1529    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
1530    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
1531                'EXIF.TIFFImageDescription',
1532                'EXIF.TIFFUserComment'));
1533    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
1534    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
1535
1536    // print EXIF/IPTC data
1537    if($t || $d || $k ){
1538        echo '<p>';
1539        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
1540        if($d) echo htmlspecialchars($d).'<br />';
1541        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
1542        echo '</p>';
1543    }
1544    echo '</div>';
1545}
1546
1547/**
1548 * Build link based on the current, adding/rewriting
1549 * parameters
1550 *
1551 * @author Kate Arzamastseva <pshns@ukr.net>
1552 * @param array $params
1553 * @param string $amp - separator
1554 * @return string - link
1555 */
1556function media_managerURL($params=false, $amp='&amp;', $abs=false, $params_array=false) {
1557    global $conf;
1558    global $ID;
1559    global $INPUT;
1560
1561    $gets = array('do' => 'media');
1562    $media_manager_params = array('tab_files', 'tab_details', 'image', 'ns', 'list', 'sort');
1563    foreach ($media_manager_params as $x) {
1564        if ($INPUT->has($x)) $gets[$x] = $INPUT->str($x);
1565    }
1566
1567    if ($params) {
1568        $gets = $params + $gets;
1569    }
1570    unset($gets['id']);
1571    if (isset($gets['delete'])) {
1572        unset($gets['image']);
1573        unset($gets['tab_details']);
1574    }
1575
1576    if ($params_array) return $gets;
1577
1578    return wl($ID,$gets,$abs,$amp);
1579}
1580
1581/**
1582 * Print the media upload form if permissions are correct
1583 *
1584 * @author Andreas Gohr <andi@splitbrain.org>
1585 * @author Kate Arzamastseva <pshns@ukr.net>
1586 */
1587function media_uploadform($ns, $auth, $fullscreen = false){
1588    global $lang;
1589    global $conf;
1590    global $INPUT;
1591
1592    if($auth < AUTH_UPLOAD) {
1593        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
1594        return;
1595    }
1596    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
1597
1598    $update = false;
1599    $id = '';
1600    if ($auth >= $auth_ow && $fullscreen && $INPUT->str('mediado') == 'update') {
1601        $update = true;
1602        $id = cleanID($INPUT->str('image'));
1603    }
1604
1605    // The default HTML upload form
1606    $params = array('id'      => 'dw__upload',
1607                    'enctype' => 'multipart/form-data');
1608    if (!$fullscreen) {
1609        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1610    } else {
1611        $params['action'] = media_managerURL(array('tab_files' => 'files',
1612            'tab_details' => 'view'), '&');
1613    }
1614
1615    $form = new Doku_Form($params);
1616    if (!$fullscreen) echo '<div class="upload">' . $lang['mediaupload'] . '</div>';
1617    $form->addElement(formSecurityToken());
1618    $form->addHidden('ns', hsc($ns));
1619    $form->addElement(form_makeOpenTag('p'));
1620    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
1621    $form->addElement(form_makeCloseTag('p'));
1622    $form->addElement(form_makeOpenTag('p'));
1623    $form->addElement(form_makeTextField('mediaid', noNS($id), $lang['txt_filename'].':', 'upload__name'));
1624    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
1625    $form->addElement(form_makeCloseTag('p'));
1626
1627    if($auth >= $auth_ow){
1628        $form->addElement(form_makeOpenTag('p'));
1629        $attrs = array();
1630        if ($update) $attrs['checked'] = 'checked';
1631        $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check', $attrs));
1632        $form->addElement(form_makeCloseTag('p'));
1633    }
1634
1635    echo NL.'<div id="mediamanager__uploader">'.NL;
1636    html_form('upload', $form);
1637
1638    echo '</div>'.NL;
1639
1640    echo '<p class="maxsize">';
1641    printf($lang['maxuploadsize'],filesize_h(media_getuploadsize()));
1642    echo '</p>'.NL;
1643
1644}
1645
1646/**
1647 * Returns the size uploaded files may have
1648 *
1649 * This uses a conservative approach using the lowest number found
1650 * in any of the limiting ini settings
1651 *
1652 * @returns int size in bytes
1653 */
1654function media_getuploadsize(){
1655    $okay = 0;
1656
1657    $post = (int) php_to_byte(@ini_get('post_max_size'));
1658    $suho = (int) php_to_byte(@ini_get('suhosin.post.max_value_length'));
1659    $upld = (int) php_to_byte(@ini_get('upload_max_filesize'));
1660
1661    if($post && ($post < $okay || $okay == 0)) $okay = $post;
1662    if($suho && ($suho < $okay || $okay == 0)) $okay = $suho;
1663    if($upld && ($upld < $okay || $okay == 0)) $okay = $upld;
1664
1665    return $okay;
1666}
1667
1668/**
1669 * Print the search field form
1670 *
1671 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1672 * @author Kate Arzamastseva <pshns@ukr.net>
1673 */
1674function media_searchform($ns,$query='',$fullscreen=false){
1675    global $lang;
1676
1677    // The default HTML search form
1678    $params = array('id' => 'dw__mediasearch');
1679    if (!$fullscreen) {
1680        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1681    } else {
1682        $params['action'] = media_managerURL(array(), '&');
1683    }
1684    $form = new Doku_Form($params);
1685    $form->addHidden('ns', $ns);
1686    $form->addHidden($fullscreen ? 'mediado' : 'do', 'searchlist');
1687
1688    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediasearch'] . '</div>'.NL);
1689    $form->addElement(form_makeOpenTag('p'));
1690    $form->addElement(form_makeTextField('q', $query,$lang['searchmedia'],'','',array('title'=>sprintf($lang['searchmedia_in'],hsc($ns).':*'))));
1691    $form->addElement(form_makeButton('submit', '', $lang['btn_search']));
1692    $form->addElement(form_makeCloseTag('p'));
1693    html_form('searchmedia', $form);
1694}
1695
1696/**
1697 * Build a tree outline of available media namespaces
1698 *
1699 * @author Andreas Gohr <andi@splitbrain.org>
1700 */
1701function media_nstree($ns){
1702    global $conf;
1703    global $lang;
1704
1705    // currently selected namespace
1706    $ns  = cleanID($ns);
1707    if(empty($ns)){
1708        global $ID;
1709        $ns = dirname(str_replace(':','/',$ID));
1710        if($ns == '.') $ns ='';
1711    }
1712    $ns  = utf8_encodeFN(str_replace(':','/',$ns));
1713
1714    $data = array();
1715    search($data,$conf['mediadir'],'search_index',array('ns' => $ns, 'nofiles' => true));
1716
1717    // wrap a list with the root level around the other namespaces
1718    array_unshift($data, array('level' => 0, 'id' => '', 'open' =>'true',
1719                               'label' => '['.$lang['mediaroot'].']'));
1720
1721    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
1722}
1723
1724/**
1725 * Userfunction for html_buildlist
1726 *
1727 * Prints a media namespace tree item
1728 *
1729 * @author Andreas Gohr <andi@splitbrain.org>
1730 */
1731function media_nstree_item($item){
1732    global $INPUT;
1733    $pos   = strrpos($item['id'], ':');
1734    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
1735    if(!$item['label']) $item['label'] = $label;
1736
1737    $ret  = '';
1738    if (!($INPUT->str('do') == 'media'))
1739    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
1740    else $ret .= '<a href="'.media_managerURL(array('ns' => idfilter($item['id'], false), 'tab_files' => 'files'))
1741        .'" class="idx_dir">';
1742    $ret .= $item['label'];
1743    $ret .= '</a>';
1744    return $ret;
1745}
1746
1747/**
1748 * Userfunction for html_buildlist
1749 *
1750 * Prints a media namespace tree item opener
1751 *
1752 * @author Andreas Gohr <andi@splitbrain.org>
1753 */
1754function media_nstree_li($item){
1755    $class='media level'.$item['level'];
1756    if($item['open']){
1757        $class .= ' open';
1758        $img   = DOKU_BASE.'lib/images/minus.gif';
1759        $alt   = '−';
1760    }else{
1761        $class .= ' closed';
1762        $img   = DOKU_BASE.'lib/images/plus.gif';
1763        $alt   = '+';
1764    }
1765    // TODO: only deliver an image if it actually has a subtree...
1766    return '<li class="'.$class.'">'.
1767        '<img src="'.$img.'" alt="'.$alt.'" />';
1768}
1769
1770/**
1771 * Resizes the given image to the given size
1772 *
1773 * @author  Andreas Gohr <andi@splitbrain.org>
1774 */
1775function media_resize_image($file, $ext, $w, $h=0){
1776    global $conf;
1777
1778    $info = @getimagesize($file); //get original size
1779    if($info == false) return $file; // that's no image - it's a spaceship!
1780
1781    if(!$h) $h = round(($w * $info[1]) / $info[0]);
1782
1783    // we wont scale up to infinity
1784    if($w > 2000 || $h > 2000) return $file;
1785
1786    //cache
1787    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
1788    $mtime = @filemtime($local); // 0 if not exists
1789
1790    if( $mtime > filemtime($file) ||
1791            media_resize_imageIM($ext,$file,$info[0],$info[1],$local,$w,$h) ||
1792            media_resize_imageGD($ext,$file,$info[0],$info[1],$local,$w,$h) ){
1793        if($conf['fperm']) chmod($local, $conf['fperm']);
1794        return $local;
1795    }
1796    //still here? resizing failed
1797    return $file;
1798}
1799
1800/**
1801 * Crops the given image to the wanted ratio, then calls media_resize_image to scale it
1802 * to the wanted size
1803 *
1804 * Crops are centered horizontally but prefer the upper third of an vertical
1805 * image because most pics are more interesting in that area (rule of thirds)
1806 *
1807 * @author  Andreas Gohr <andi@splitbrain.org>
1808 */
1809function media_crop_image($file, $ext, $w, $h=0){
1810    global $conf;
1811
1812    if(!$h) $h = $w;
1813    $info = @getimagesize($file); //get original size
1814    if($info == false) return $file; // that's no image - it's a spaceship!
1815
1816    // calculate crop size
1817    $fr = $info[0]/$info[1];
1818    $tr = $w/$h;
1819    if($tr >= 1){
1820        if($tr > $fr){
1821            $cw = $info[0];
1822            $ch = (int) $info[0]/$tr;
1823        }else{
1824            $cw = (int) $info[1]*$tr;
1825            $ch = $info[1];
1826        }
1827    }else{
1828        if($tr < $fr){
1829            $cw = (int) $info[1]*$tr;
1830            $ch = $info[1];
1831        }else{
1832            $cw = $info[0];
1833            $ch = (int) $info[0]/$tr;
1834        }
1835    }
1836    // calculate crop offset
1837    $cx = (int) ($info[0]-$cw)/2;
1838    $cy = (int) ($info[1]-$ch)/3;
1839
1840    //cache
1841    $local = getCacheName($file,'.media.'.$cw.'x'.$ch.'.crop.'.$ext);
1842    $mtime = @filemtime($local); // 0 if not exists
1843
1844    if( $mtime > @filemtime($file) ||
1845            media_crop_imageIM($ext,$file,$info[0],$info[1],$local,$cw,$ch,$cx,$cy) ||
1846            media_resize_imageGD($ext,$file,$cw,$ch,$local,$cw,$ch,$cx,$cy) ){
1847        if($conf['fperm']) chmod($local, $conf['fperm']);
1848        return media_resize_image($local,$ext, $w, $h);
1849    }
1850
1851    //still here? cropping failed
1852    return media_resize_image($file,$ext, $w, $h);
1853}
1854
1855/**
1856 * Download a remote file and return local filename
1857 *
1858 * returns false if download fails. Uses cached file if available and
1859 * wanted
1860 *
1861 * @author  Andreas Gohr <andi@splitbrain.org>
1862 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
1863 */
1864function media_get_from_URL($url,$ext,$cache){
1865    global $conf;
1866
1867    // if no cache or fetchsize just redirect
1868    if ($cache==0)           return false;
1869    if (!$conf['fetchsize']) return false;
1870
1871    $local = getCacheName(strtolower($url),".media.$ext");
1872    $mtime = @filemtime($local); // 0 if not exists
1873
1874    //decide if download needed:
1875    if( ($mtime == 0) ||                           // cache does not exist
1876            ($cache != -1 && $mtime < time()-$cache)   // 'recache' and cache has expired
1877      ){
1878        if(media_image_download($url,$local)){
1879            return $local;
1880        }else{
1881            return false;
1882        }
1883    }
1884
1885    //if cache exists use it else
1886    if($mtime) return $local;
1887
1888    //else return false
1889    return false;
1890}
1891
1892/**
1893 * Download image files
1894 *
1895 * @author Andreas Gohr <andi@splitbrain.org>
1896 */
1897function media_image_download($url,$file){
1898    global $conf;
1899    $http = new DokuHTTPClient();
1900    $http->max_bodysize = $conf['fetchsize'];
1901    $http->timeout = 25; //max. 25 sec
1902    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
1903
1904    $data = $http->get($url);
1905    if(!$data) return false;
1906
1907    $fileexists = @file_exists($file);
1908    $fp = @fopen($file,"w");
1909    if(!$fp) return false;
1910    fwrite($fp,$data);
1911    fclose($fp);
1912    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
1913
1914    // check if it is really an image
1915    $info = @getimagesize($file);
1916    if(!$info){
1917        @unlink($file);
1918        return false;
1919    }
1920
1921    return true;
1922}
1923
1924/**
1925 * resize images using external ImageMagick convert program
1926 *
1927 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
1928 * @author Andreas Gohr <andi@splitbrain.org>
1929 */
1930function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
1931    global $conf;
1932
1933    // check if convert is configured
1934    if(!$conf['im_convert']) return false;
1935
1936    // prepare command
1937    $cmd  = $conf['im_convert'];
1938    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
1939    if ($ext == 'jpg' || $ext == 'jpeg') {
1940        $cmd .= ' -quality '.$conf['jpg_quality'];
1941    }
1942    $cmd .= " $from $to";
1943
1944    @exec($cmd,$out,$retval);
1945    if ($retval == 0) return true;
1946    return false;
1947}
1948
1949/**
1950 * crop images using external ImageMagick convert program
1951 *
1952 * @author Andreas Gohr <andi@splitbrain.org>
1953 */
1954function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
1955    global $conf;
1956
1957    // check if convert is configured
1958    if(!$conf['im_convert']) return false;
1959
1960    // prepare command
1961    $cmd  = $conf['im_convert'];
1962    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
1963    if ($ext == 'jpg' || $ext == 'jpeg') {
1964        $cmd .= ' -quality '.$conf['jpg_quality'];
1965    }
1966    $cmd .= " $from $to";
1967
1968    @exec($cmd,$out,$retval);
1969    if ($retval == 0) return true;
1970    return false;
1971}
1972
1973/**
1974 * resize or crop images using PHP's libGD support
1975 *
1976 * @author Andreas Gohr <andi@splitbrain.org>
1977 * @author Sebastian Wienecke <s_wienecke@web.de>
1978 */
1979function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
1980    global $conf;
1981
1982    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
1983
1984    // check available memory
1985    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
1986        return false;
1987    }
1988
1989    // create an image of the given filetype
1990    if ($ext == 'jpg' || $ext == 'jpeg'){
1991        if(!function_exists("imagecreatefromjpeg")) return false;
1992        $image = @imagecreatefromjpeg($from);
1993    }elseif($ext == 'png') {
1994        if(!function_exists("imagecreatefrompng")) return false;
1995        $image = @imagecreatefrompng($from);
1996
1997    }elseif($ext == 'gif') {
1998        if(!function_exists("imagecreatefromgif")) return false;
1999        $image = @imagecreatefromgif($from);
2000    }
2001    if(!$image) return false;
2002
2003    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
2004        $newimg = @imagecreatetruecolor ($to_w, $to_h);
2005    }
2006    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
2007    if(!$newimg){
2008        imagedestroy($image);
2009        return false;
2010    }
2011
2012    //keep png alpha channel if possible
2013    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
2014        imagealphablending($newimg, false);
2015        imagesavealpha($newimg,true);
2016    }
2017
2018    //keep gif transparent color if possible
2019    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
2020        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
2021            $transcolorindex = @imagecolortransparent($image);
2022            if($transcolorindex >= 0 ) { //transparent color exists
2023                $transcolor = @imagecolorsforindex($image, $transcolorindex);
2024                $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
2025                @imagefill($newimg, 0, 0, $transcolorindex);
2026                @imagecolortransparent($newimg, $transcolorindex);
2027            }else{ //filling with white
2028                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2029                @imagefill($newimg, 0, 0, $whitecolorindex);
2030            }
2031        }else{ //filling with white
2032            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2033            @imagefill($newimg, 0, 0, $whitecolorindex);
2034        }
2035    }
2036
2037    //try resampling first
2038    if(function_exists("imagecopyresampled")){
2039        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
2040            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2041        }
2042    }else{
2043        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2044    }
2045
2046    $okay = false;
2047    if ($ext == 'jpg' || $ext == 'jpeg'){
2048        if(!function_exists('imagejpeg')){
2049            $okay = false;
2050        }else{
2051            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
2052        }
2053    }elseif($ext == 'png') {
2054        if(!function_exists('imagepng')){
2055            $okay = false;
2056        }else{
2057            $okay =  imagepng($newimg, $to);
2058        }
2059    }elseif($ext == 'gif') {
2060        if(!function_exists('imagegif')){
2061            $okay = false;
2062        }else{
2063            $okay = imagegif($newimg, $to);
2064        }
2065    }
2066
2067    // destroy GD image ressources
2068    if($image) imagedestroy($image);
2069    if($newimg) imagedestroy($newimg);
2070
2071    return $okay;
2072}
2073
2074/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
2075