xref: /dokuwiki/inc/media.php (revision 00c2d4a9d8fcb38b6a2294749b395d528952fde5) 
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'), $auth, 'move_uploaded_file');
300    if (is_array($res)) {
301        msg($res[0], $res[1]);
302        return false;
303    }
304    return $res;
305}
306
307/**
308 * This generates an action event and delegates to _media_upload_action().
309 * Action plugins are allowed to pre/postprocess the uploaded file.
310 * (The triggered event is preventable.)
311 *
312 * Event data:
313 * $data[0]     fn_tmp: the temporary file name (read from $_FILES)
314 * $data[1]     fn: the file name of the uploaded file
315 * $data[2]     id: the future directory id of the uploaded file
316 * $data[3]     imime: the mimetype of the uploaded file
317 * $data[4]     overwrite: if an existing file is going to be overwritten
318 *
319 * @triggers MEDIA_UPLOAD_FINISH
320 */
321function media_save($file, $id, $ow, $auth, $move) {
322    if($auth < AUTH_UPLOAD) {
323        return array("You don't have permissions to upload files.", -1);
324    }
325
326    if (!isset($file['mime']) || !isset($file['ext'])) {
327        list($ext, $mime) = mimetype($id);
328        if (!isset($file['mime'])) {
329            $file['mime'] = $mime;
330        }
331        if (!isset($file['ext'])) {
332            $file['ext'] = $ext;
333        }
334    }
335
336    global $lang, $conf;
337
338    // get filename
339    $id   = cleanID($id);
340    $fn   = mediaFN($id);
341
342    // get filetype regexp
343    $types = array_keys(getMimeTypes());
344    $types = array_map(create_function('$q','return preg_quote($q,"/");'),$types);
345    $regex = join('|',$types);
346
347    // because a temp file was created already
348    if(!preg_match('/\.('.$regex.')$/i',$fn)) {
349        return array($lang['uploadwrong'],-1);
350    }
351
352    //check for overwrite
353    $overwrite = @file_exists($fn);
354    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
355    if($overwrite && (!$ow || $auth < $auth_ow)) {
356        return array($lang['uploadexist'], 0);
357    }
358    // check for valid content
359    $ok = media_contentcheck($file['name'], $file['mime']);
360    if($ok == -1){
361        return array(sprintf($lang['uploadbadcontent'],'.' . $file['ext']),-1);
362    }elseif($ok == -2){
363        return array($lang['uploadspam'],-1);
364    }elseif($ok == -3){
365        return array($lang['uploadxss'],-1);
366    }
367
368    // prepare event data
369    $data[0] = $file['name'];
370    $data[1] = $fn;
371    $data[2] = $id;
372    $data[3] = $file['mime'];
373    $data[4] = $overwrite;
374    $data[5] = $move;
375
376    // trigger event
377    return trigger_event('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
378}
379
380/**
381 * Callback adapter for media_upload_finish()
382 * @author Michael Klier <chi@chimeric.de>
383 */
384function _media_upload_action($data) {
385    // fixme do further sanity tests of given data?
386    if(is_array($data) && count($data)===6) {
387        return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
388    } else {
389        return false; //callback error
390    }
391}
392
393/**
394 * Saves an uploaded media file
395 *
396 * @author Andreas Gohr <andi@splitbrain.org>
397 * @author Michael Klier <chi@chimeric.de>
398 * @author Kate Arzamastseva <pshns@ukr.net>
399 */
400function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') {
401    global $conf;
402    global $lang;
403    global $REV;
404
405    $old = @filemtime($fn);
406    if(!@file_exists(mediaFN($id, $old)) && @file_exists($fn)) {
407        // add old revision to the attic if missing
408        media_saveOldRevision($id);
409    }
410
411    // prepare directory
412    io_createNamespace($id, 'media');
413
414    if($move($fn_tmp, $fn)) {
415        @clearstatcache(true,$fn);
416        $new = @filemtime($fn);
417        // Set the correct permission here.
418        // Always chmod media because they may be saved with different permissions than expected from the php umask.
419        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
420        chmod($fn, $conf['fmode']);
421        msg($lang['uploadsucc'],1);
422        media_notify($id,$fn,$imime,$old);
423        // add a log entry to the media changelog
424        if ($REV){
425            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_REVERT, sprintf($lang['restored'], dformat($REV)), $REV);
426        } elseif ($overwrite) {
427            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT);
428        } else {
429            addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
430        }
431        return $id;
432    }else{
433        return array($lang['uploadfail'],-1);
434    }
435}
436
437/**
438 * Moves the current version of media file to the media_attic
439 * directory
440 *
441 * @author Kate Arzamastseva <pshns@ukr.net>
442 * @param string $id
443 * @return int - revision date
444 */
445function media_saveOldRevision($id){
446    global $conf, $lang;
447
448    $oldf = mediaFN($id);
449    if(!@file_exists($oldf)) return '';
450    $date = filemtime($oldf);
451    if (!$conf['mediarevisions']) return $date;
452
453    if (!getRevisionInfo($id, $date, 8192, true)) {
454        // there was an external edit,
455        // there is no log entry for current version of file
456        if (!@file_exists(mediaMetaFN($id,'.changes'))) {
457            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created']);
458        } else {
459            addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_EDIT);
460        }
461    }
462
463    $newf = mediaFN($id,$date);
464    io_makeFileDir($newf);
465    if(copy($oldf, $newf)) {
466        // Set the correct permission here.
467        // Always chmod media because they may be saved with different permissions than expected from the php umask.
468        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
469        chmod($newf, $conf['fmode']);
470    }
471    return $date;
472}
473
474/**
475 * This function checks if the uploaded content is really what the
476 * mimetype says it is. We also do spam checking for text types here.
477 *
478 * We need to do this stuff because we can not rely on the browser
479 * to do this check correctly. Yes, IE is broken as usual.
480 *
481 * @author Andreas Gohr <andi@splitbrain.org>
482 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
483 * @fixme  check all 26 magic IE filetypes here?
484 */
485function media_contentcheck($file,$mime){
486    global $conf;
487    if($conf['iexssprotect']){
488        $fh = @fopen($file, 'rb');
489        if($fh){
490            $bytes = fread($fh, 256);
491            fclose($fh);
492            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
493                return -3;
494            }
495        }
496    }
497    if(substr($mime,0,6) == 'image/'){
498        $info = @getimagesize($file);
499        if($mime == 'image/gif' && $info[2] != 1){
500            return -1;
501        }elseif($mime == 'image/jpeg' && $info[2] != 2){
502            return -1;
503        }elseif($mime == 'image/png' && $info[2] != 3){
504            return -1;
505        }
506        # fixme maybe check other images types as well
507    }elseif(substr($mime,0,5) == 'text/'){
508        global $TEXT;
509        $TEXT = io_readFile($file);
510        if(checkwordblock()){
511            return -2;
512        }
513    }
514    return 0;
515}
516
517/**
518 * Send a notify mail on uploads
519 *
520 * @author Andreas Gohr <andi@splitbrain.org>
521 * @fixme this should embed thumbnails of images in HTML version
522 */
523function media_notify($id,$file,$mime,$old_rev=false){
524    global $lang;
525    global $conf;
526    global $INFO;
527    if(empty($conf['notify'])) return; //notify enabled?
528
529    $text = rawLocale('uploadmail');
530    $trep = array(
531                'MIME'  => $mime,
532                'MEDIA' => ml($id,'',true,'&',true),
533                'SIZE'  => filesize_h(filesize($file)),
534            );
535
536    if ($old_rev && $conf['mediarevisions']) {
537        $trep['OLD'] = ml($id, "rev=$old_rev", true, '&', true);
538    } else {
539        $trep['OLD'] = '---';
540    }
541
542    $mail = new Mailer();
543    $mail->to($conf['notify']);
544    $mail->subject($lang['mail_upload'].' '.$id);
545    $mail->setBody($text,$trep);
546    return $mail->send();
547}
548
549/**
550 * List all files in a given Media namespace
551 */
552function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false,$sort=false){
553    global $conf;
554    global $lang;
555    $ns = cleanID($ns);
556
557    // check auth our self if not given (needed for ajax calls)
558    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
559
560    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
561
562    if($auth < AUTH_READ){
563        // FIXME: print permission warning here instead?
564        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
565    }else{
566        if (!$fullscreenview) media_uploadform($ns, $auth);
567
568        $dir = utf8_encodeFN(str_replace(':','/',$ns));
569        $data = array();
570        search($data,$conf['mediadir'],'search_media',
571                array('showmsg'=>true,'depth'=>1),$dir,1,$sort);
572
573        if(!count($data)){
574            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
575        }else {
576            if ($fullscreenview) {
577                echo '<ul class="' . _media_get_list_type() . '">';
578            }
579            foreach($data as $item){
580                if (!$fullscreenview) {
581                    media_printfile($item,$auth,$jump);
582                } else {
583                    media_printfile_thumbs($item,$auth,$jump);
584                }
585            }
586            if ($fullscreenview) echo '</ul>'.NL;
587        }
588    }
589    if (!$fullscreenview) media_searchform($ns);
590}
591
592/**
593 * Prints tabs for files list actions
594 *
595 * @author Kate Arzamastseva <pshns@ukr.net>
596 * @author Adrian Lang <mail@adrianlang.de>
597 *
598 * @param string $selected_tab - opened tab
599 */
600
601function media_tabs_files($selected_tab = ''){
602    global $lang;
603    $tabs = array();
604    foreach(array('files'  => 'mediaselect',
605                  'upload' => 'media_uploadtab',
606                  'search' => 'media_searchtab') as $tab => $caption) {
607        $tabs[$tab] = array('href'    => media_managerURL(array('tab_files' => $tab), '&'),
608                            'caption' => $lang[$caption]);
609    }
610
611    html_tabs($tabs, $selected_tab);
612}
613
614/**
615 * Prints tabs for files details actions
616 *
617 * @author Kate Arzamastseva <pshns@ukr.net>
618 * @param string $selected_tab - opened tab
619 */
620function media_tabs_details($image, $selected_tab = ''){
621    global $lang, $conf;
622
623    $tabs = array();
624    $tabs['view'] = array('href'    => media_managerURL(array('tab_details' => 'view'), '&'),
625                          'caption' => $lang['media_viewtab']);
626
627    list($ext, $mime) = mimetype($image);
628    if ($mime == 'image/jpeg' && @file_exists(mediaFN($image))) {
629        $tabs['edit'] = array('href'    => media_managerURL(array('tab_details' => 'edit'), '&'),
630                              'caption' => $lang['media_edittab']);
631    }
632    if ($conf['mediarevisions']) {
633        $tabs['history'] = array('href'    => media_managerURL(array('tab_details' => 'history'), '&'),
634                                 'caption' => $lang['media_historytab']);
635    }
636
637    html_tabs($tabs, $selected_tab);
638}
639
640/**
641 * Prints options for the tab that displays a list of all files
642 *
643 * @author Kate Arzamastseva <pshns@ukr.net>
644 */
645function media_tab_files_options(){
646    global $lang;
647    global $NS;
648    global $INPUT;
649    global $ID;
650    $form = new Doku_Form(array('class' => 'options', 'method' => 'get',
651                                'action' => wl($ID)));
652    $media_manager_params = media_managerURL(array(), '', false, true);
653    foreach($media_manager_params as $pKey => $pVal){
654        $form->addHidden($pKey, $pVal);
655    }
656    $form->addHidden('sectok', null);
657    if ($INPUT->has('q')) {
658        $form->addHidden('q', $INPUT->str('q'));
659    }
660    $form->addElement('<ul>'.NL);
661    foreach(array('list' => array('listType', array('thumbs', 'rows')),
662                  'sort' => array('sortBy', array('name', 'date')))
663            as $group => $content) {
664        $checked = "_media_get_${group}_type";
665        $checked = $checked();
666
667        $form->addElement('<li class="' . $content[0] . '">');
668        foreach($content[1] as $option) {
669            $attrs = array();
670            if ($checked == $option) {
671                $attrs['checked'] = 'checked';
672            }
673            $form->addElement(form_makeRadioField($group, $option,
674                                       $lang['media_' . $group . '_' . $option],
675                                                  $content[0] . '__' . $option,
676                                                  $option, $attrs));
677        }
678        $form->addElement('</li>'.NL);
679    }
680    $form->addElement('<li>');
681    $form->addElement(form_makeButton('submit', '', $lang['btn_apply']));
682    $form->addElement('</li>'.NL);
683    $form->addElement('</ul>'.NL);
684    $form->printForm();
685}
686
687/**
688 * Returns type of sorting for the list of files in media manager
689 *
690 * @author Kate Arzamastseva <pshns@ukr.net>
691 * @return string - sort type
692 */
693function _media_get_sort_type() {
694    return _media_get_display_param('sort', array('default' => 'name', 'date'));
695}
696
697function _media_get_list_type() {
698    return _media_get_display_param('list', array('default' => 'thumbs', 'rows'));
699}
700
701function _media_get_display_param($param, $values) {
702    global $INPUT;
703    if (in_array($INPUT->str($param), $values)) {
704        // FIXME: Set cookie
705        return $INPUT->str($param);
706    } else {
707        $val = get_doku_pref($param, $values['default']);
708        if (!in_array($val, $values)) {
709            $val = $values['default'];
710        }
711        return $val;
712    }
713}
714
715/**
716 * Prints tab that displays a list of all files
717 *
718 * @author Kate Arzamastseva <pshns@ukr.net>
719 */
720function media_tab_files($ns,$auth=null,$jump='') {
721    global $lang;
722    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
723
724    if($auth < AUTH_READ){
725        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
726    }else{
727        media_filelist($ns,$auth,$jump,true,_media_get_sort_type());
728    }
729}
730
731/**
732 * Prints tab that displays uploading form
733 *
734 * @author Kate Arzamastseva <pshns@ukr.net>
735 */
736function media_tab_upload($ns,$auth=null,$jump='') {
737    global $lang;
738    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
739
740    echo '<div class="upload">'.NL;
741    if ($auth >= AUTH_UPLOAD) {
742        echo '<p>' . $lang['mediaupload'] . '</p>';
743    }
744    media_uploadform($ns, $auth, true);
745    echo '</div>'.NL;
746}
747
748/**
749 * Prints tab that displays search form
750 *
751 * @author Kate Arzamastseva <pshns@ukr.net>
752 */
753function media_tab_search($ns,$auth=null) {
754    global $lang;
755    global $INPUT;
756
757    $do = $INPUT->str('mediado');
758    $query = $INPUT->str('q');
759    echo '<div class="search">'.NL;
760
761    media_searchform($ns, $query, true);
762    if ($do == 'searchlist' || $query) {
763        media_searchlist($query,$ns,$auth,true,_media_get_sort_type());
764    }
765    echo '</div>'.NL;
766}
767
768/**
769 * Prints tab that displays mediafile details
770 *
771 * @author Kate Arzamastseva <pshns@ukr.net>
772 */
773function media_tab_view($image, $ns, $auth=null, $rev=false) {
774    global $lang, $conf;
775    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
776
777    if ($image && $auth >= AUTH_READ) {
778        $meta = new JpegMeta(mediaFN($image, $rev));
779        media_preview($image, $auth, $rev, $meta);
780        media_preview_buttons($image, $auth, $rev);
781        media_details($image, $auth, $rev, $meta);
782
783    } else {
784        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
785    }
786}
787
788/**
789 * Prints tab that displays form for editing mediafile metadata
790 *
791 * @author Kate Arzamastseva <pshns@ukr.net>
792 */
793function media_tab_edit($image, $ns, $auth=null) {
794    global $lang;
795    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
796
797    if ($image) {
798        list($ext, $mime) = mimetype($image);
799        if ($mime == 'image/jpeg') media_metaform($image,$auth);
800    }
801}
802
803/**
804 * Prints tab that displays mediafile revisions
805 *
806 * @author Kate Arzamastseva <pshns@ukr.net>
807 */
808function media_tab_history($image, $ns, $auth=null) {
809    global $lang;
810    global $INPUT;
811
812    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
813    $do = $INPUT->str('mediado');
814
815    if ($auth >= AUTH_READ && $image) {
816        if ($do == 'diff'){
817            media_diff($image, $ns, $auth);
818        } else {
819            $first = $INPUT->int('first');
820            html_revisions($first, $image);
821        }
822    } else {
823        echo '<div class="nothing">'.$lang['media_perm_read'].'</div>'.NL;
824    }
825}
826
827/**
828 * Prints mediafile details
829 *
830 * @author Kate Arzamastseva <pshns@ukr.net>
831 */
832function media_preview($image, $auth, $rev=false, $meta=false) {
833
834    $size = media_image_preview_size($image, $rev, $meta);
835
836    if ($size) {
837        global $lang;
838        echo '<div class="image">';
839
840        $more = array();
841        if ($rev) {
842            $more['rev'] = $rev;
843        } else {
844            $t = @filemtime(mediaFN($image));
845            $more['t'] = $t;
846        }
847
848        $more['w'] = $size[0];
849        $more['h'] = $size[1];
850        $src = ml($image, $more);
851
852        echo '<a href="'.$src.'" target="_blank" title="'.$lang['mediaview'].'">';
853        echo '<img src="'.$src.'" alt="" style="max-width: '.$size[0].'px;" />';
854        echo '</a>';
855
856        echo '</div>'.NL;
857    }
858}
859
860/**
861 * Prints mediafile action buttons
862 *
863 * @author Kate Arzamastseva <pshns@ukr.net>
864 */
865function media_preview_buttons($image, $auth, $rev=false) {
866    global $lang, $conf;
867
868    echo '<ul class="actions">'.NL;
869
870    if($auth >= AUTH_DELETE && !$rev && @file_exists(mediaFN($image))){
871
872        // delete button
873        $form = new Doku_Form(array('id' => 'mediamanager__btn_delete',
874            'action'=>media_managerURL(array('delete' => $image), '&')));
875        $form->addElement(form_makeButton('submit','',$lang['btn_delete']));
876        echo '<li>';
877        $form->printForm();
878        echo '</li>'.NL;
879    }
880
881    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
882    if($auth >= $auth_ow && !$rev){
883
884        // upload new version button
885        $form = new Doku_Form(array('id' => 'mediamanager__btn_update',
886            'action'=>media_managerURL(array('image' => $image, 'mediado' => 'update'), '&')));
887        $form->addElement(form_makeButton('submit','',$lang['media_update']));
888        echo '<li>';
889        $form->printForm();
890        echo '</li>'.NL;
891    }
892
893    if($auth >= AUTH_UPLOAD && $rev && $conf['mediarevisions'] && @file_exists(mediaFN($image, $rev))){
894
895        // restore button
896        $form = new Doku_Form(array('id' => 'mediamanager__btn_restore',
897            'action'=>media_managerURL(array('image' => $image), '&')));
898        $form->addHidden('mediado','restore');
899        $form->addHidden('rev',$rev);
900        $form->addElement(form_makeButton('submit','',$lang['media_restore']));
901        echo '<li>';
902        $form->printForm();
903        echo '</li>'.NL;
904    }
905
906    echo '</ul>'.NL;
907}
908
909/**
910 * Returns image width and height for mediamanager preview panel
911 *
912 * @author Kate Arzamastseva <pshns@ukr.net>
913 * @param string $image
914 * @param int $rev
915 * @param JpegMeta $meta
916 * @return array
917 */
918function media_image_preview_size($image, $rev, $meta, $size = 500) {
919    if (!preg_match("/\.(jpe?g|gif|png)$/", $image) || !file_exists(mediaFN($image, $rev))) return false;
920
921    $info = getimagesize(mediaFN($image, $rev));
922    $w = (int) $info[0];
923    $h = (int) $info[1];
924
925    if($meta && ($w > $size || $h > $size)){
926        $ratio = $meta->getResizeRatio($size, $size);
927        $w = floor($w * $ratio);
928        $h = floor($h * $ratio);
929    }
930    return array($w, $h);
931}
932
933/**
934 * Returns the requested EXIF/IPTC tag from the image meta
935 *
936 * @author Kate Arzamastseva <pshns@ukr.net>
937 * @param array $tags
938 * @param JpegMeta $meta
939 * @param string $alt
940 * @return string
941 */
942function media_getTag($tags,$meta,$alt=''){
943    if($meta === false) return $alt;
944    $info = $meta->getField($tags);
945    if($info == false) return $alt;
946    return $info;
947}
948
949/**
950 * Returns mediafile tags
951 *
952 * @author Kate Arzamastseva <pshns@ukr.net>
953 * @param JpegMeta $meta
954 * @return array
955 */
956function media_file_tags($meta) {
957    global $config_cascade;
958
959    // load the field descriptions
960    static $fields = null;
961    if(is_null($fields)){
962        $config_files = getConfigFiles('mediameta');
963        foreach ($config_files as $config_file) {
964            if(@file_exists($config_file)) include($config_file);
965        }
966    }
967
968    $tags = array();
969
970    foreach($fields as $key => $tag){
971        $t = array();
972        if (!empty($tag[0])) $t = array($tag[0]);
973        if(is_array($tag[3])) $t = array_merge($t,$tag[3]);
974        $value = media_getTag($t, $meta);
975        $tags[] = array('tag' => $tag, 'value' => $value);
976    }
977
978    return $tags;
979}
980
981/**
982 * Prints mediafile tags
983 *
984 * @author Kate Arzamastseva <pshns@ukr.net>
985 */
986function media_details($image, $auth, $rev=false, $meta=false) {
987    global $lang;
988
989    if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev));
990    $tags = media_file_tags($meta);
991
992    echo '<dl>'.NL;
993    foreach($tags as $tag){
994        if ($tag['value']) {
995            $value = cleanText($tag['value']);
996            echo '<dt>'.$lang[$tag['tag'][1]].':</dt><dd>';
997            if ($tag['tag'][2] == 'date') echo dformat($value);
998            else echo hsc($value);
999            echo '</dd>'.NL;
1000        }
1001    }
1002    echo '</dl>'.NL;
1003}
1004
1005/**
1006 * Shows difference between two revisions of file
1007 *
1008 * @author Kate Arzamastseva <pshns@ukr.net>
1009 */
1010function media_diff($image, $ns, $auth, $fromajax = false) {
1011    global $lang;
1012    global $conf;
1013    global $INPUT;
1014
1015    if ($auth < AUTH_READ || !$image || !$conf['mediarevisions']) return '';
1016
1017    $rev1 = $INPUT->int('rev');
1018
1019    $rev2 = $INPUT->ref('rev2');
1020    if(is_array($rev2)){
1021        $rev1 = (int) $rev2[0];
1022        $rev2 = (int) $rev2[1];
1023
1024        if(!$rev1){
1025            $rev1 = $rev2;
1026            unset($rev2);
1027        }
1028    }else{
1029        $rev2 = $INPUT->int('rev2');
1030    }
1031
1032    if ($rev1 && !file_exists(mediaFN($image, $rev1))) $rev1 = false;
1033    if ($rev2 && !file_exists(mediaFN($image, $rev2))) $rev2 = false;
1034
1035    if($rev1 && $rev2){            // two specific revisions wanted
1036        // make sure order is correct (older on the left)
1037        if($rev1 < $rev2){
1038            $l_rev = $rev1;
1039            $r_rev = $rev2;
1040        }else{
1041            $l_rev = $rev2;
1042            $r_rev = $rev1;
1043        }
1044    }elseif($rev1){                // single revision given, compare to current
1045        $r_rev = '';
1046        $l_rev = $rev1;
1047    }else{                        // no revision was given, compare previous to current
1048        $r_rev = '';
1049        $revs = getRevisions($image, 0, 1, 8192, true);
1050        if (file_exists(mediaFN($image, $revs[0]))) {
1051            $l_rev = $revs[0];
1052        } else {
1053            $l_rev = '';
1054        }
1055    }
1056
1057    // prepare event data
1058    $data[0] = $image;
1059    $data[1] = $l_rev;
1060    $data[2] = $r_rev;
1061    $data[3] = $ns;
1062    $data[4] = $auth;
1063    $data[5] = $fromajax;
1064
1065    // trigger event
1066    return trigger_event('MEDIA_DIFF', $data, '_media_file_diff', true);
1067
1068}
1069
1070function _media_file_diff($data) {
1071    if(is_array($data) && count($data)===6) {
1072        return media_file_diff($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
1073    } else {
1074        return false;
1075    }
1076}
1077
1078/**
1079 * Shows difference between two revisions of image
1080 *
1081 * @author Kate Arzamastseva <pshns@ukr.net>
1082 */
1083function media_file_diff($image, $l_rev, $r_rev, $ns, $auth, $fromajax){
1084    global $lang;
1085    global $config_cascade;
1086    global $INPUT;
1087
1088    $l_meta = new JpegMeta(mediaFN($image, $l_rev));
1089    $r_meta = new JpegMeta(mediaFN($image, $r_rev));
1090
1091    $is_img = preg_match("/\.(jpe?g|gif|png)$/", $image);
1092    if ($is_img) {
1093        $l_size = media_image_preview_size($image, $l_rev, $l_meta);
1094        $r_size = media_image_preview_size($image, $r_rev, $r_meta);
1095        $is_img = ($l_size && $r_size && ($l_size[0] >= 30 || $r_size[0] >= 30));
1096
1097        $difftype = $INPUT->str('difftype');
1098
1099        if (!$fromajax) {
1100            $form = new Doku_Form(array(
1101                'action' => media_managerURL(array(), '&'),
1102                'method' => 'get',
1103                'id' => 'mediamanager__form_diffview',
1104                'class' => 'diffView'
1105            ));
1106            $form->addHidden('sectok', null);
1107            $form->addElement('<input type="hidden" name="rev2[]" value="'.$l_rev.'" ></input>');
1108            $form->addElement('<input type="hidden" name="rev2[]" value="'.$r_rev.'" ></input>');
1109            $form->addHidden('mediado', 'diff');
1110            $form->printForm();
1111
1112            echo NL.'<div id="mediamanager__diff" >'.NL;
1113        }
1114
1115        if ($difftype == 'opacity' || $difftype == 'portions') {
1116            media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $difftype);
1117            if (!$fromajax) echo '</div>';
1118            return '';
1119        }
1120    }
1121
1122    list($l_head, $r_head) = html_diff_head($l_rev, $r_rev, $image, true);
1123
1124    ?>
1125    <div class="table">
1126    <table>
1127      <tr>
1128        <th><?php echo $l_head; ?></th>
1129        <th><?php echo $r_head; ?></th>
1130      </tr>
1131    <?php
1132
1133    echo '<tr class="image">';
1134    echo '<td>';
1135    media_preview($image, $auth, $l_rev, $l_meta);
1136    echo '</td>';
1137
1138    echo '<td>';
1139    media_preview($image, $auth, $r_rev, $r_meta);
1140    echo '</td>';
1141    echo '</tr>'.NL;
1142
1143    echo '<tr class="actions">';
1144    echo '<td>';
1145    media_preview_buttons($image, $auth, $l_rev);
1146    echo '</td>';
1147
1148    echo '<td>';
1149    media_preview_buttons($image, $auth, $r_rev);
1150    echo '</td>';
1151    echo '</tr>'.NL;
1152
1153    $l_tags = media_file_tags($l_meta);
1154    $r_tags = media_file_tags($r_meta);
1155    // FIXME r_tags-only stuff
1156    foreach ($l_tags as $key => $l_tag) {
1157        if ($l_tag['value'] != $r_tags[$key]['value']) {
1158            $r_tags[$key]['highlighted'] = true;
1159            $l_tags[$key]['highlighted'] = true;
1160        } else if (!$l_tag['value'] || !$r_tags[$key]['value']) {
1161            unset($r_tags[$key]);
1162            unset($l_tags[$key]);
1163        }
1164    }
1165
1166    echo '<tr>';
1167    foreach(array($l_tags,$r_tags) as $tags){
1168        echo '<td>'.NL;
1169
1170        echo '<dl class="img_tags">';
1171        foreach($tags as $tag){
1172            $value = cleanText($tag['value']);
1173            if (!$value) $value = '-';
1174            echo '<dt>'.$lang[$tag['tag'][1]].':</dt>';
1175            echo '<dd>';
1176            if ($tag['highlighted']) {
1177                echo '<strong>';
1178            }
1179            if ($tag['tag'][2] == 'date') echo dformat($value);
1180            else echo hsc($value);
1181            if ($tag['highlighted']) {
1182                echo '</strong>';
1183            }
1184            echo '</dd>';
1185        }
1186        echo '</dl>'.NL;
1187
1188        echo '</td>';
1189    }
1190    echo '</tr>'.NL;
1191
1192    echo '</table>'.NL;
1193    echo '</div>'.NL;
1194
1195    if ($is_img && !$fromajax) echo '</div>';
1196}
1197
1198/**
1199 * Prints two images side by side
1200 * and slider
1201 *
1202 * @author Kate Arzamastseva <pshns@ukr.net>
1203 * @param string $image
1204 * @param int $l_rev
1205 * @param int $r_rev
1206 * @param array $l_size
1207 * @param array $r_size
1208 * @param string $type
1209 */
1210function media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $type) {
1211    if ($l_size != $r_size) {
1212        if ($r_size[0] > $l_size[0]) {
1213            $l_size = $r_size;
1214        }
1215    }
1216
1217    $l_more = array('rev' => $l_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1218    $r_more = array('rev' => $r_rev, 'h' => $l_size[1], 'w' => $l_size[0]);
1219
1220    $l_src = ml($image, $l_more);
1221    $r_src = ml($image, $r_more);
1222
1223    // slider
1224    echo '<div class="slider" style="max-width: '.($l_size[0]-20).'px;" ></div>'.NL;
1225
1226    // two images in divs
1227    echo '<div class="imageDiff ' . $type . '">'.NL;
1228    echo '<div class="image1" style="max-width: '.$l_size[0].'px;">';
1229    echo '<img src="'.$l_src.'" alt="" />';
1230    echo '</div>'.NL;
1231    echo '<div class="image2" style="max-width: '.$l_size[0].'px;">';
1232    echo '<img src="'.$r_src.'" alt="" />';
1233    echo '</div>'.NL;
1234    echo '</div>'.NL;
1235}
1236
1237/**
1238 * Restores an old revision of a media file
1239 *
1240 * @param string $image
1241 * @param int $rev
1242 * @param int $auth
1243 * @return string - file's id
1244 * @author Kate Arzamastseva <pshns@ukr.net>
1245 */
1246function media_restore($image, $rev, $auth){
1247    global $conf;
1248    if ($auth < AUTH_UPLOAD || !$conf['mediarevisions']) return false;
1249    $removed = (!file_exists(mediaFN($image)) && file_exists(mediaMetaFN($image, '.changes')));
1250    if (!$image || (!file_exists(mediaFN($image)) && !$removed)) return false;
1251    if (!$rev || !file_exists(mediaFN($image, $rev))) return false;
1252    list($iext,$imime,$dl) = mimetype($image);
1253    $res = media_upload_finish(mediaFN($image, $rev),
1254        mediaFN($image),
1255        $image,
1256        $imime,
1257        true,
1258        'copy');
1259    if (is_array($res)) {
1260        msg($res[0], $res[1]);
1261        return false;
1262    }
1263    return $res;
1264}
1265
1266/**
1267 * List all files found by the search request
1268 *
1269 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1270 * @author Andreas Gohr <gohr@cosmocode.de>
1271 * @author Kate Arzamastseva <pshns@ukr.net>
1272 * @triggers MEDIA_SEARCH
1273 */
1274function media_searchlist($query,$ns,$auth=null,$fullscreen=false,$sort=''){
1275    global $conf;
1276    global $lang;
1277
1278    $ns = cleanID($ns);
1279
1280    if ($query) {
1281        $evdata = array(
1282                'ns'    => $ns,
1283                'data'  => array(),
1284                'query' => $query
1285                );
1286        $evt = new Doku_Event('MEDIA_SEARCH', $evdata);
1287        if ($evt->advise_before()) {
1288            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
1289            $pattern = '/'.preg_quote($evdata['query'],'/').'/i';
1290            search($evdata['data'],
1291                    $conf['mediadir'],
1292                    'search_media',
1293                    array('showmsg'=>false,'pattern'=>$pattern),
1294                    $dir);
1295        }
1296
1297        $data = array();
1298        foreach ($evdata['data'] as $k => $v) {
1299            $data[$k] = ($sort == 'date') ? $v['mtime'] : $v['id'];
1300        }
1301        array_multisort($data, SORT_DESC, SORT_NUMERIC, $evdata['data']);
1302
1303        $evt->advise_after();
1304        unset($evt);
1305    }
1306
1307    if (!$fullscreen) {
1308        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
1309        media_searchform($ns,$query);
1310    }
1311
1312    if(!count($evdata['data'])){
1313        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
1314    }else {
1315        if ($fullscreen) {
1316            echo '<ul class="' . _media_get_list_type() . '">';
1317        }
1318        foreach($evdata['data'] as $item){
1319            if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
1320            else media_printfile_thumbs($item,$item['perm'],false,true);
1321        }
1322        if ($fullscreen) echo '</ul>'.NL;
1323    }
1324}
1325
1326/**
1327 * Formats and prints one file in the list
1328 */
1329function media_printfile($item,$auth,$jump,$display_namespace=false){
1330    global $lang;
1331    global $conf;
1332
1333    // Prepare zebra coloring
1334    // I always wanted to use this variable name :-D
1335    static $twibble = 1;
1336    $twibble *= -1;
1337    $zebra = ($twibble == -1) ? 'odd' : 'even';
1338
1339    // Automatically jump to recent action
1340    if($jump == $item['id']) {
1341        $jump = ' id="scroll__here" ';
1342    }else{
1343        $jump = '';
1344    }
1345
1346    // Prepare fileicons
1347    list($ext,$mime,$dl) = mimetype($item['file'],false);
1348    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
1349    $class = 'select mediafile mf_'.$class;
1350
1351    // Prepare filename
1352    $file = utf8_decodeFN($item['file']);
1353
1354    // Prepare info
1355    $info = '';
1356    if($item['isimg']){
1357        $info .= (int) $item['meta']->getField('File.Width');
1358        $info .= '&#215;';
1359        $info .= (int) $item['meta']->getField('File.Height');
1360        $info .= ' ';
1361    }
1362    $info .= '<i>'.dformat($item['mtime']).'</i>';
1363    $info .= ' ';
1364    $info .= filesize_h($item['size']);
1365
1366    // output
1367    echo '<div class="'.$zebra.'"'.$jump.' title="'.hsc($item['id']).'">'.NL;
1368    if (!$display_namespace) {
1369        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
1370    } else {
1371        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
1372    }
1373    echo '<span class="info">('.$info.')</span>'.NL;
1374
1375    // view button
1376    $link = ml($item['id'],'',true);
1377    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
1378        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
1379
1380    // mediamanager button
1381    $link = wl('',array('do'=>'media','image'=>$item['id'],'ns'=>getNS($item['id'])));
1382    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/mediamanager.png" '.
1383        'alt="'.$lang['btn_media'].'" title="'.$lang['btn_media'].'" class="btn" /></a>';
1384
1385    // delete button
1386    if($item['writable'] && $auth >= AUTH_DELETE){
1387        $link = DOKU_BASE.'lib/exe/mediamanager.php?delete='.rawurlencode($item['id']).
1388            '&amp;sectok='.getSecurityToken();
1389        echo ' <a href="'.$link.'" class="btn_media_delete" title="'.$item['id'].'">'.
1390            '<img src="'.DOKU_BASE.'lib/images/trash.png" alt="'.$lang['btn_delete'].'" '.
1391            'title="'.$lang['btn_delete'].'" class="btn" /></a>';
1392    }
1393
1394    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
1395    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
1396    echo '</div>';
1397    if($item['isimg']) media_printimgdetail($item);
1398    echo '<div class="clearer"></div>'.NL;
1399    echo '</div>'.NL;
1400}
1401
1402function media_printicon($filename){
1403    list($ext,$mime,$dl) = mimetype(mediaFN($filename),false);
1404
1405    if (@file_exists(DOKU_INC.'lib/images/fileicons/'.$ext.'.png')) {
1406        $icon = DOKU_BASE.'lib/images/fileicons/'.$ext.'.png';
1407    } else {
1408        $icon = DOKU_BASE.'lib/images/fileicons/file.png';
1409    }
1410
1411    return '<img src="'.$icon.'" alt="'.$filename.'" class="icon" />';
1412
1413}
1414
1415/**
1416 * Formats and prints one file in the list in the thumbnails view
1417 *
1418 * @author Kate Arzamastseva <pshns@ukr.net>
1419 */
1420function media_printfile_thumbs($item,$auth,$jump=false,$display_namespace=false){
1421    global $lang;
1422    global $conf;
1423
1424    // Prepare filename
1425    $file = utf8_decodeFN($item['file']);
1426
1427    // output
1428    echo '<li><dl title="'.hsc($item['id']).'">'.NL;
1429
1430        echo '<dt>';
1431    if($item['isimg']) {
1432        media_printimgdetail($item, true);
1433
1434    } else {
1435        echo '<a name="d_:'.$item['id'].'" class="image" title="'.$item['id'].'" href="'.
1436            media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1437            'tab_details' => 'view')).'">';
1438        echo media_printicon($item['id']);
1439        echo '</a>';
1440    }
1441    echo '</dt>'.NL;
1442    if (!$display_namespace) {
1443        $name = hsc($file);
1444    } else {
1445        $name = hsc($item['id']);
1446    }
1447    echo '<dd class="name"><a href="'.media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']),
1448        'tab_details' => 'view')).'" name="h_:'.$item['id'].'">'.$name.'</a></dd>'.NL;
1449
1450    if($item['isimg']){
1451        $size = '';
1452        $size .= (int) $item['meta']->getField('File.Width');
1453        $size .= '&#215;';
1454        $size .= (int) $item['meta']->getField('File.Height');
1455        echo '<dd class="size">'.$size.'</dd>'.NL;
1456    } else {
1457        echo '<dd class="size">&#160;</dd>'.NL;
1458    }
1459    $date = dformat($item['mtime']);
1460    echo '<dd class="date">'.$date.'</dd>'.NL;
1461    $filesize = filesize_h($item['size']);
1462    echo '<dd class="filesize">'.$filesize.'</dd>'.NL;
1463    echo '</dl></li>'.NL;
1464}
1465
1466/**
1467 * Prints a thumbnail and metainfos
1468 */
1469function media_printimgdetail($item, $fullscreen=false){
1470    // prepare thumbnail
1471    $size = $fullscreen ? 90 : 120;
1472
1473    $w = (int) $item['meta']->getField('File.Width');
1474    $h = (int) $item['meta']->getField('File.Height');
1475    if($w>$size || $h>$size){
1476        if (!$fullscreen) {
1477            $ratio = $item['meta']->getResizeRatio($size);
1478        } else {
1479            $ratio = $item['meta']->getResizeRatio($size,$size);
1480        }
1481        $w = floor($w * $ratio);
1482        $h = floor($h * $ratio);
1483    }
1484    $src = ml($item['id'],array('w'=>$w,'h'=>$h,'t'=>$item['mtime']));
1485    $p = array();
1486    if (!$fullscreen) {
1487        // In fullscreen mediamanager view, image resizing is done via CSS.
1488        $p['width']  = $w;
1489        $p['height'] = $h;
1490    }
1491    $p['alt']    = $item['id'];
1492    $att = buildAttributes($p);
1493
1494    // output
1495    if ($fullscreen) {
1496        echo '<a name="l_:'.$item['id'].'" class="image thumb" href="'.
1497            media_managerURL(array('image' => hsc($item['id']), 'ns' => getNS($item['id']), 'tab_details' => 'view')).'">';
1498        echo '<img src="'.$src.'" '.$att.' />';
1499        echo '</a>';
1500    }
1501
1502    if ($fullscreen) return;
1503
1504    echo '<div class="detail">';
1505    echo '<div class="thumb">';
1506    echo '<a name="d_:'.$item['id'].'" class="select">';
1507    echo '<img src="'.$src.'" '.$att.' />';
1508    echo '</a>';
1509    echo '</div>';
1510
1511    // read EXIF/IPTC data
1512    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
1513    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
1514                'EXIF.TIFFImageDescription',
1515                'EXIF.TIFFUserComment'));
1516    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
1517    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
1518
1519    // print EXIF/IPTC data
1520    if($t || $d || $k ){
1521        echo '<p>';
1522        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
1523        if($d) echo htmlspecialchars($d).'<br />';
1524        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
1525        echo '</p>';
1526    }
1527    echo '</div>';
1528}
1529
1530/**
1531 * Build link based on the current, adding/rewriting
1532 * parameters
1533 *
1534 * @author Kate Arzamastseva <pshns@ukr.net>
1535 * @param array $params
1536 * @param string $amp - separator
1537 * @return string - link
1538 */
1539function media_managerURL($params=false, $amp='&amp;', $abs=false, $params_array=false) {
1540    global $conf;
1541    global $ID;
1542    global $INPUT;
1543
1544    $gets = array('do' => 'media');
1545    $media_manager_params = array('tab_files', 'tab_details', 'image', 'ns', 'list', 'sort');
1546    foreach ($media_manager_params as $x) {
1547        if ($INPUT->has($x)) $gets[$x] = $INPUT->str($x);
1548    }
1549
1550    if ($params) {
1551        $gets = $params + $gets;
1552    }
1553    unset($gets['id']);
1554    if (isset($gets['delete'])) {
1555        unset($gets['image']);
1556        unset($gets['tab_details']);
1557    }
1558
1559    if ($params_array) return $gets;
1560
1561    return wl($ID,$gets,$abs,$amp);
1562}
1563
1564/**
1565 * Print the media upload form if permissions are correct
1566 *
1567 * @author Andreas Gohr <andi@splitbrain.org>
1568 * @author Kate Arzamastseva <pshns@ukr.net>
1569 */
1570function media_uploadform($ns, $auth, $fullscreen = false){
1571    global $lang;
1572    global $conf;
1573    global $INPUT;
1574
1575    if($auth < AUTH_UPLOAD) {
1576        echo '<div class="nothing">'.$lang['media_perm_upload'].'</div>'.NL;
1577        return;
1578    }
1579    $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE);
1580
1581    $update = false;
1582    $id = '';
1583    if ($auth >= $auth_ow && $fullscreen && $INPUT->str('mediado') == 'update') {
1584        $update = true;
1585        $id = cleanID($INPUT->str('image'));
1586    }
1587
1588    // The default HTML upload form
1589    $params = array('id'      => 'dw__upload',
1590                    'enctype' => 'multipart/form-data');
1591    if (!$fullscreen) {
1592        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1593    } else {
1594        $params['action'] = media_managerURL(array('tab_files' => 'files',
1595            'tab_details' => 'view'), '&');
1596    }
1597
1598    $form = new Doku_Form($params);
1599    if (!$fullscreen) echo '<div class="upload">' . $lang['mediaupload'] . '</div>';
1600    $form->addElement(formSecurityToken());
1601    $form->addHidden('ns', hsc($ns));
1602    $form->addElement(form_makeOpenTag('p'));
1603    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
1604    $form->addElement(form_makeCloseTag('p'));
1605    $form->addElement(form_makeOpenTag('p'));
1606    $form->addElement(form_makeTextField('mediaid', noNS($id), $lang['txt_filename'].':', 'upload__name'));
1607    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
1608    $form->addElement(form_makeCloseTag('p'));
1609
1610    if($auth >= $auth_ow){
1611        $form->addElement(form_makeOpenTag('p'));
1612        $attrs = array();
1613        if ($update) $attrs['checked'] = 'checked';
1614        $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check', $attrs));
1615        $form->addElement(form_makeCloseTag('p'));
1616    }
1617
1618    echo NL.'<div id="mediamanager__uploader">'.NL;
1619    html_form('upload', $form);
1620
1621    echo '</div>'.NL;
1622
1623    echo '<p class="maxsize">';
1624    printf($lang['maxuploadsize'],filesize_h(media_getuploadsize()));
1625    echo '</p>'.NL;
1626
1627}
1628
1629/**
1630 * Returns the size uploaded files may have
1631 *
1632 * This uses a conservative approach using the lowest number found
1633 * in any of the limiting ini settings
1634 *
1635 * @returns int size in bytes
1636 */
1637function media_getuploadsize(){
1638    $okay = 0;
1639
1640    $post = (int) php_to_byte(@ini_get('post_max_size'));
1641    $suho = (int) php_to_byte(@ini_get('suhosin.post.max_value_length'));
1642    $upld = (int) php_to_byte(@ini_get('upload_max_filesize'));
1643
1644    if($post && ($post < $okay || $okay == 0)) $okay = $post;
1645    if($suho && ($suho < $okay || $okay == 0)) $okay = $suho;
1646    if($upld && ($upld < $okay || $okay == 0)) $okay = $upld;
1647
1648    return $okay;
1649}
1650
1651/**
1652 * Print the search field form
1653 *
1654 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1655 * @author Kate Arzamastseva <pshns@ukr.net>
1656 */
1657function media_searchform($ns,$query='',$fullscreen=false){
1658    global $lang;
1659
1660    // The default HTML search form
1661    $params = array('id' => 'dw__mediasearch');
1662    if (!$fullscreen) {
1663        $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1664    } else {
1665        $params['action'] = media_managerURL(array(), '&');
1666    }
1667    $form = new Doku_Form($params);
1668    $form->addHidden('ns', $ns);
1669    $form->addHidden($fullscreen ? 'mediado' : 'do', 'searchlist');
1670
1671    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediasearch'] . '</div>'.NL);
1672    $form->addElement(form_makeOpenTag('p'));
1673    $form->addElement(form_makeTextField('q', $query,$lang['searchmedia'],'','',array('title'=>sprintf($lang['searchmedia_in'],hsc($ns).':*'))));
1674    $form->addElement(form_makeButton('submit', '', $lang['btn_search']));
1675    $form->addElement(form_makeCloseTag('p'));
1676    html_form('searchmedia', $form);
1677}
1678
1679/**
1680 * Build a tree outline of available media namespaces
1681 *
1682 * @author Andreas Gohr <andi@splitbrain.org>
1683 */
1684function media_nstree($ns){
1685    global $conf;
1686    global $lang;
1687
1688    // currently selected namespace
1689    $ns  = cleanID($ns);
1690    if(empty($ns)){
1691        global $ID;
1692        $ns = dirname(str_replace(':','/',$ID));
1693        if($ns == '.') $ns ='';
1694    }
1695    $ns  = utf8_encodeFN(str_replace(':','/',$ns));
1696
1697    $data = array();
1698    search($data,$conf['mediadir'],'search_index',array('ns' => $ns, 'nofiles' => true));
1699
1700    // wrap a list with the root level around the other namespaces
1701    array_unshift($data, array('level' => 0, 'id' => '', 'open' =>'true',
1702                               'label' => '['.$lang['mediaroot'].']'));
1703
1704    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
1705}
1706
1707/**
1708 * Userfunction for html_buildlist
1709 *
1710 * Prints a media namespace tree item
1711 *
1712 * @author Andreas Gohr <andi@splitbrain.org>
1713 */
1714function media_nstree_item($item){
1715    global $INPUT;
1716    $pos   = strrpos($item['id'], ':');
1717    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
1718    if(!$item['label']) $item['label'] = $label;
1719
1720    $ret  = '';
1721    if (!($INPUT->str('do') == 'media'))
1722    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
1723    else $ret .= '<a href="'.media_managerURL(array('ns' => idfilter($item['id'], false), 'tab_files' => 'files'))
1724        .'" class="idx_dir">';
1725    $ret .= $item['label'];
1726    $ret .= '</a>';
1727    return $ret;
1728}
1729
1730/**
1731 * Userfunction for html_buildlist
1732 *
1733 * Prints a media namespace tree item opener
1734 *
1735 * @author Andreas Gohr <andi@splitbrain.org>
1736 */
1737function media_nstree_li($item){
1738    $class='media level'.$item['level'];
1739    if($item['open']){
1740        $class .= ' open';
1741        $img   = DOKU_BASE.'lib/images/minus.gif';
1742        $alt   = '−';
1743    }else{
1744        $class .= ' closed';
1745        $img   = DOKU_BASE.'lib/images/plus.gif';
1746        $alt   = '+';
1747    }
1748    // TODO: only deliver an image if it actually has a subtree...
1749    return '<li class="'.$class.'">'.
1750        '<img src="'.$img.'" alt="'.$alt.'" />';
1751}
1752
1753/**
1754 * Resizes the given image to the given size
1755 *
1756 * @author  Andreas Gohr <andi@splitbrain.org>
1757 */
1758function media_resize_image($file, $ext, $w, $h=0){
1759    global $conf;
1760
1761    $info = @getimagesize($file); //get original size
1762    if($info == false) return $file; // that's no image - it's a spaceship!
1763
1764    if(!$h) $h = round(($w * $info[1]) / $info[0]);
1765
1766    // we wont scale up to infinity
1767    if($w > 2000 || $h > 2000) return $file;
1768
1769    //cache
1770    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
1771    $mtime = @filemtime($local); // 0 if not exists
1772
1773    if( $mtime > filemtime($file) ||
1774            media_resize_imageIM($ext,$file,$info[0],$info[1],$local,$w,$h) ||
1775            media_resize_imageGD($ext,$file,$info[0],$info[1],$local,$w,$h) ){
1776        if($conf['fperm']) chmod($local, $conf['fperm']);
1777        return $local;
1778    }
1779    //still here? resizing failed
1780    return $file;
1781}
1782
1783/**
1784 * Crops the given image to the wanted ratio, then calls media_resize_image to scale it
1785 * to the wanted size
1786 *
1787 * Crops are centered horizontally but prefer the upper third of an vertical
1788 * image because most pics are more interesting in that area (rule of thirds)
1789 *
1790 * @author  Andreas Gohr <andi@splitbrain.org>
1791 */
1792function media_crop_image($file, $ext, $w, $h=0){
1793    global $conf;
1794
1795    if(!$h) $h = $w;
1796    $info = @getimagesize($file); //get original size
1797    if($info == false) return $file; // that's no image - it's a spaceship!
1798
1799    // calculate crop size
1800    $fr = $info[0]/$info[1];
1801    $tr = $w/$h;
1802    if($tr >= 1){
1803        if($tr > $fr){
1804            $cw = $info[0];
1805            $ch = (int) $info[0]/$tr;
1806        }else{
1807            $cw = (int) $info[1]*$tr;
1808            $ch = $info[1];
1809        }
1810    }else{
1811        if($tr < $fr){
1812            $cw = (int) $info[1]*$tr;
1813            $ch = $info[1];
1814        }else{
1815            $cw = $info[0];
1816            $ch = (int) $info[0]/$tr;
1817        }
1818    }
1819    // calculate crop offset
1820    $cx = (int) ($info[0]-$cw)/2;
1821    $cy = (int) ($info[1]-$ch)/3;
1822
1823    //cache
1824    $local = getCacheName($file,'.media.'.$cw.'x'.$ch.'.crop.'.$ext);
1825    $mtime = @filemtime($local); // 0 if not exists
1826
1827    if( $mtime > @filemtime($file) ||
1828            media_crop_imageIM($ext,$file,$info[0],$info[1],$local,$cw,$ch,$cx,$cy) ||
1829            media_resize_imageGD($ext,$file,$cw,$ch,$local,$cw,$ch,$cx,$cy) ){
1830        if($conf['fperm']) chmod($local, $conf['fperm']);
1831        return media_resize_image($local,$ext, $w, $h);
1832    }
1833
1834    //still here? cropping failed
1835    return media_resize_image($file,$ext, $w, $h);
1836}
1837
1838/**
1839 * Download a remote file and return local filename
1840 *
1841 * returns false if download fails. Uses cached file if available and
1842 * wanted
1843 *
1844 * @author  Andreas Gohr <andi@splitbrain.org>
1845 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
1846 */
1847function media_get_from_URL($url,$ext,$cache){
1848    global $conf;
1849
1850    // if no cache or fetchsize just redirect
1851    if ($cache==0)           return false;
1852    if (!$conf['fetchsize']) return false;
1853
1854    $local = getCacheName(strtolower($url),".media.$ext");
1855    $mtime = @filemtime($local); // 0 if not exists
1856
1857    //decide if download needed:
1858    if( ($mtime == 0) ||                           // cache does not exist
1859            ($cache != -1 && $mtime < time()-$cache)   // 'recache' and cache has expired
1860      ){
1861        if(media_image_download($url,$local)){
1862            return $local;
1863        }else{
1864            return false;
1865        }
1866    }
1867
1868    //if cache exists use it else
1869    if($mtime) return $local;
1870
1871    //else return false
1872    return false;
1873}
1874
1875/**
1876 * Download image files
1877 *
1878 * @author Andreas Gohr <andi@splitbrain.org>
1879 */
1880function media_image_download($url,$file){
1881    global $conf;
1882    $http = new DokuHTTPClient();
1883    $http->max_bodysize = $conf['fetchsize'];
1884    $http->timeout = 25; //max. 25 sec
1885    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
1886
1887    $data = $http->get($url);
1888    if(!$data) return false;
1889
1890    $fileexists = @file_exists($file);
1891    $fp = @fopen($file,"w");
1892    if(!$fp) return false;
1893    fwrite($fp,$data);
1894    fclose($fp);
1895    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
1896
1897    // check if it is really an image
1898    $info = @getimagesize($file);
1899    if(!$info){
1900        @unlink($file);
1901        return false;
1902    }
1903
1904    return true;
1905}
1906
1907/**
1908 * resize images using external ImageMagick convert program
1909 *
1910 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
1911 * @author Andreas Gohr <andi@splitbrain.org>
1912 */
1913function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
1914    global $conf;
1915
1916    // check if convert is configured
1917    if(!$conf['im_convert']) return false;
1918
1919    // prepare command
1920    $cmd  = $conf['im_convert'];
1921    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
1922    if ($ext == 'jpg' || $ext == 'jpeg') {
1923        $cmd .= ' -quality '.$conf['jpg_quality'];
1924    }
1925    $cmd .= " $from $to";
1926
1927    @exec($cmd,$out,$retval);
1928    if ($retval == 0) return true;
1929    return false;
1930}
1931
1932/**
1933 * crop images using external ImageMagick convert program
1934 *
1935 * @author Andreas Gohr <andi@splitbrain.org>
1936 */
1937function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
1938    global $conf;
1939
1940    // check if convert is configured
1941    if(!$conf['im_convert']) return false;
1942
1943    // prepare command
1944    $cmd  = $conf['im_convert'];
1945    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
1946    if ($ext == 'jpg' || $ext == 'jpeg') {
1947        $cmd .= ' -quality '.$conf['jpg_quality'];
1948    }
1949    $cmd .= " $from $to";
1950
1951    @exec($cmd,$out,$retval);
1952    if ($retval == 0) return true;
1953    return false;
1954}
1955
1956/**
1957 * resize or crop images using PHP's libGD support
1958 *
1959 * @author Andreas Gohr <andi@splitbrain.org>
1960 * @author Sebastian Wienecke <s_wienecke@web.de>
1961 */
1962function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
1963    global $conf;
1964
1965    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
1966
1967    // check available memory
1968    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
1969        return false;
1970    }
1971
1972    // create an image of the given filetype
1973    if ($ext == 'jpg' || $ext == 'jpeg'){
1974        if(!function_exists("imagecreatefromjpeg")) return false;
1975        $image = @imagecreatefromjpeg($from);
1976    }elseif($ext == 'png') {
1977        if(!function_exists("imagecreatefrompng")) return false;
1978        $image = @imagecreatefrompng($from);
1979
1980    }elseif($ext == 'gif') {
1981        if(!function_exists("imagecreatefromgif")) return false;
1982        $image = @imagecreatefromgif($from);
1983    }
1984    if(!$image) return false;
1985
1986    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
1987        $newimg = @imagecreatetruecolor ($to_w, $to_h);
1988    }
1989    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
1990    if(!$newimg){
1991        imagedestroy($image);
1992        return false;
1993    }
1994
1995    //keep png alpha channel if possible
1996    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
1997        imagealphablending($newimg, false);
1998        imagesavealpha($newimg,true);
1999    }
2000
2001    //keep gif transparent color if possible
2002    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
2003        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
2004            $transcolorindex = @imagecolortransparent($image);
2005            if($transcolorindex >= 0 ) { //transparent color exists
2006                $transcolor = @imagecolorsforindex($image, $transcolorindex);
2007                $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
2008                @imagefill($newimg, 0, 0, $transcolorindex);
2009                @imagecolortransparent($newimg, $transcolorindex);
2010            }else{ //filling with white
2011                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2012                @imagefill($newimg, 0, 0, $whitecolorindex);
2013            }
2014        }else{ //filling with white
2015            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
2016            @imagefill($newimg, 0, 0, $whitecolorindex);
2017        }
2018    }
2019
2020    //try resampling first
2021    if(function_exists("imagecopyresampled")){
2022        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
2023            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2024        }
2025    }else{
2026        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
2027    }
2028
2029    $okay = false;
2030    if ($ext == 'jpg' || $ext == 'jpeg'){
2031        if(!function_exists('imagejpeg')){
2032            $okay = false;
2033        }else{
2034            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
2035        }
2036    }elseif($ext == 'png') {
2037        if(!function_exists('imagepng')){
2038            $okay = false;
2039        }else{
2040            $okay =  imagepng($newimg, $to);
2041        }
2042    }elseif($ext == 'gif') {
2043        if(!function_exists('imagegif')){
2044            $okay = false;
2045        }else{
2046            $okay = imagegif($newimg, $to);
2047        }
2048    }
2049
2050    // destroy GD image ressources
2051    if($image) imagedestroy($image);
2052    if($newimg) imagedestroy($newimg);
2053
2054    return $okay;
2055}
2056
2057/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
2058