xref: /dokuwiki/inc/media.php (revision 8e69fd30702f1101a9c70dbe6eac6f45f9af3970) 
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">'.$lang['ref_hidden'].'</div>';
36    }
37}
38
39/**
40 * Handles the saving of image meta data
41 *
42 * @author Andreas Gohr <andi@splitbrain.org>
43 */
44function media_metasave($id,$auth,$data){
45    if($auth < AUTH_UPLOAD) return false;
46    if(!checkSecurityToken()) return false;
47    global $lang;
48    global $conf;
49    $src = mediaFN($id);
50
51    $meta = new JpegMeta($src);
52    $meta->_parseAll();
53
54    foreach($data as $key => $val){
55        $val=trim($val);
56        if(empty($val)){
57            $meta->deleteField($key);
58        }else{
59            $meta->setField($key,$val);
60        }
61    }
62
63    if($meta->save()){
64        if($conf['fperm']) chmod($src, $conf['fperm']);
65        msg($lang['metasaveok'],1);
66        return $id;
67    }else{
68        msg($lang['metasaveerr'],-1);
69        return false;
70    }
71}
72
73/**
74 * Display the form to edit image meta data
75 *
76 * @author Andreas Gohr <andi@splitbrain.org>
77 * @author Kate Arzamastseva <pshns@ukr.net>
78 */
79function media_metaform($id,$auth,$fullscreen = false){
80    if($auth < AUTH_UPLOAD) return false;
81    global $lang, $config_cascade;
82
83    // load the field descriptions
84    static $fields = null;
85    if(is_null($fields)){
86
87        foreach (array('default','local') as $config_group) {
88            if (empty($config_cascade['mediameta'][$config_group])) continue;
89            foreach ($config_cascade['mediameta'][$config_group] as $config_file) {
90                if(@file_exists($config_file)){
91                    include($config_file);
92                }
93            }
94        }
95    }
96
97    $src = mediaFN($id);
98
99    // output
100    if (!$fullscreen) {
101        echo '<h1>'.hsc(noNS($id)).'</h1>'.NL;
102        echo '<form action="'.DOKU_BASE.'lib/exe/mediamanager.php" accept-charset="utf-8" method="post" class="meta">'.NL;
103    } else {
104        echo '<form action="'.media_managerURL(array('tab_details' => 'view')).
105            '" accept-charset="utf-8" method="post" class="meta">'.NL;
106    }
107    formSecurityToken();
108    foreach($fields as $key => $field){
109        // get current value
110        $tags = array($field[0]);
111        if(is_array($field[3])) $tags = array_merge($tags,$field[3]);
112        $value = tpl_img_getTag($tags,'',$src);
113        $value = cleanText($value);
114
115        // prepare attributes
116        $p = array();
117        $p['class'] = 'edit';
118        $p['id']    = 'meta__'.$key;
119        $p['name']  = 'meta['.$field[0].']';
120
121        // put label
122        echo '<div class="metafield">';
123        echo '<label for="meta__'.$key.'">';
124        echo ($lang[$field[1]]) ? $lang[$field[1]] : $field[1];
125        echo ':</label>';
126
127        // put input field
128        if($field[2] == 'text'){
129            $p['value'] = $value;
130            $p['type']  = 'text';
131            $att = buildAttributes($p);
132            echo "<input $att/>".NL;
133        }else{
134            $att = buildAttributes($p);
135            echo "<textarea $att rows=\"6\" cols=\"50\">".formText($value).'</textarea>'.NL;
136        }
137        echo '</div>'.NL;
138    }
139    echo '<div class="buttons">'.NL;
140    echo '<input type="hidden" name="img" value="'.hsc($id).'" />'.NL;
141    if (!$fullscreen) $do = 'do';
142    else $do = 'mediado';
143    echo '<input name="'.$do.'[save]" type="submit" value="'.$lang['btn_save'].
144        '" title="'.$lang['btn_save'].' [S]" accesskey="s" class="button" />'.NL;
145    if (!$fullscreen)
146    echo '<input name="do[cancel]" type="submit" value="'.$lang['btn_cancel'].
147        '" title="'.$lang['btn_cancel'].' [C]" accesskey="c" class="button" />'.NL;
148    echo '</div>'.NL;
149    echo '</form>'.NL;
150}
151
152/**
153 * Convenience function to check if a media file is still in use
154 *
155 * @author Michael Klier <chi@chimeric.de>
156 */
157function media_inuse($id) {
158    global $conf;
159    $mediareferences = array();
160    if($conf['refcheck']){
161        $mediareferences = ft_mediause($id,$conf['refshow']);
162        if(!count($mediareferences)) {
163            return false;
164        } else {
165            return $mediareferences;
166        }
167    } else {
168        return false;
169    }
170}
171
172define('DOKU_MEDIA_DELETED', 1);
173define('DOKU_MEDIA_NOT_AUTH', 2);
174define('DOKU_MEDIA_INUSE', 4);
175define('DOKU_MEDIA_EMPTY_NS', 8);
176
177/**
178 * Handles media file deletions
179 *
180 * If configured, checks for media references before deletion
181 *
182 * @author Andreas Gohr <andi@splitbrain.org>
183 * @return int One of: 0,
184                       DOKU_MEDIA_DELETED,
185                       DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS,
186                       DOKU_MEDIA_NOT_AUTH,
187                       DOKU_MEDIA_INUSE
188 */
189function media_delete($id,$auth){
190    if($auth < AUTH_DELETE) return DOKU_MEDIA_NOT_AUTH;
191    if(media_inuse($id)) return DOKU_MEDIA_INUSE;
192
193    $file = mediaFN($id);
194
195    // trigger an event - MEDIA_DELETE_FILE
196    $data['id']   = $id;
197    $data['name'] = basename($file);
198    $data['path'] = $file;
199    $data['size'] = (@file_exists($file)) ? filesize($file) : 0;
200
201    $data['unl'] = false;
202    $data['del'] = false;
203    $evt = new Doku_Event('MEDIA_DELETE_FILE',$data);
204    if ($evt->advise_before()) {
205        $data['unl'] = @unlink($file);
206        if($data['unl']){
207            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_DELETE);
208            $data['del'] = io_sweepNS($id,'mediadir');
209        }
210    }
211    $evt->advise_after();
212    unset($evt);
213
214    if($data['unl'] && $data['del']){
215        return DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS;
216    }
217
218    return $data['unl'] ? DOKU_MEDIA_DELETED : 0;
219}
220
221/**
222 * Handles media file uploads
223 *
224 * @author Andreas Gohr <andi@splitbrain.org>
225 * @author Michael Klier <chi@chimeric.de>
226 * @return mixed false on error, id of the new file on success
227 */
228function media_upload($ns,$auth){
229    if(!checkSecurityToken()) return false;
230    global $lang;
231
232    // get file and id
233    $id   = $_POST['id'];
234    $file = $_FILES['upload'];
235    if(empty($id)) $id = $file['name'];
236
237    // check for errors (messages are done in lib/exe/mediamanager.php)
238    if($file['error']) return false;
239
240    // check extensions
241    list($fext,$fmime,$dl) = mimetype($file['name']);
242    list($iext,$imime,$dl) = mimetype($id);
243    if($fext && !$iext){
244        // no extension specified in id - read original one
245        $id   .= '.'.$fext;
246        $imime = $fmime;
247    }elseif($fext && $fext != $iext){
248        // extension was changed, print warning
249        msg(sprintf($lang['mediaextchange'],$fext,$iext));
250    }
251
252    $res = media_save(array('name' => $file['tmp_name'],
253                            'mime' => $imime,
254                            'ext'  => $iext), $ns.':'.$id,
255                      $_REQUEST['ow'], $auth, 'move_uploaded_file');
256    if (is_array($res)) {
257        msg($res[0], $res[1]);
258        return false;
259    }
260    return $res;
261}
262
263/**
264 * This generates an action event and delegates to _media_upload_action().
265 * Action plugins are allowed to pre/postprocess the uploaded file.
266 * (The triggered event is preventable.)
267 *
268 * Event data:
269 * $data[0]     fn_tmp: the temporary file name (read from $_FILES)
270 * $data[1]     fn: the file name of the uploaded file
271 * $data[2]     id: the future directory id of the uploaded file
272 * $data[3]     imime: the mimetype of the uploaded file
273 * $data[4]     overwrite: if an existing file is going to be overwritten
274 *
275 * @triggers MEDIA_UPLOAD_FINISH
276 */
277function media_save($file, $id, $ow, $auth, $move) {
278    if($auth < AUTH_UPLOAD) {
279        return array("You don't have permissions to upload files.", -1);
280    }
281
282    if (!isset($file['mime']) || !isset($file['ext'])) {
283        list($ext, $mime) = mimetype($id);
284        if (!isset($file['mime'])) {
285            $file['mime'] = $mime;
286        }
287        if (!isset($file['ext'])) {
288            $file['ext'] = $ext;
289        }
290    }
291
292    global $lang;
293
294    // get filename
295    $id   = cleanID($id,false,true);
296    $fn   = mediaFN($id);
297
298    // get filetype regexp
299    $types = array_keys(getMimeTypes());
300    $types = array_map(create_function('$q','return preg_quote($q,"/");'),$types);
301    $regex = join('|',$types);
302
303    // because a temp file was created already
304    if(!preg_match('/\.('.$regex.')$/i',$fn)) {
305        return array($lang['uploadwrong'],-1);
306    }
307
308    //check for overwrite
309    $overwrite = @file_exists($fn);
310    if($overwrite && (!$ow || $auth < AUTH_DELETE)) {
311        return array($lang['uploadexist'], 0);
312    }
313    // check for valid content
314    $ok = media_contentcheck($file['name'], $file['mime']);
315    if($ok == -1){
316        return array(sprintf($lang['uploadbadcontent'],'.' . $file['ext']),-1);
317    }elseif($ok == -2){
318        return array($lang['uploadspam'],-1);
319    }elseif($ok == -3){
320        return array($lang['uploadxss'],-1);
321    }
322
323    // prepare event data
324    $data[0] = $file['name'];
325    $data[1] = $fn;
326    $data[2] = $id;
327    $data[3] = $file['mime'];
328    $data[4] = $overwrite;
329    $data[5] = $move;
330
331    // trigger event
332    return trigger_event('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true);
333}
334
335/**
336 * Callback adapter for media_upload_finish()
337 * @author Michael Klier <chi@chimeric.de>
338 */
339function _media_upload_action($data) {
340    // fixme do further sanity tests of given data?
341    if(is_array($data) && count($data)===6) {
342        return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]);
343    } else {
344        return false; //callback error
345    }
346}
347
348/**
349 * Saves an uploaded media file
350 *
351 * @author Andreas Gohr <andi@splitbrain.org>
352 * @author Michael Klier <chi@chimeric.de>
353 * @author Kate Arzamastseva <pshns@ukr.net>
354 */
355function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') {
356    global $conf;
357    global $lang;
358
359    $old = @filemtime($fn);
360    if(!@file_exists(mediaFN($id, $old)) && @file_exists($fn)) {
361        // add old revision to the attic if missing
362        media_saveOldRevision($id);
363    }
364
365    // prepare directory
366    io_createNamespace($id, 'media');
367
368    if($move($fn_tmp, $fn)) {
369        // Set the correct permission here.
370        // Always chmod media because they may be saved with different permissions than expected from the php umask.
371        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
372        chmod($fn, $conf['fmode']);
373        msg($lang['uploadsucc'],1);
374        media_notify($id,$fn,$imime);
375        // add a log entry to the media changelog
376        if ($overwrite) {
377            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_EDIT);
378        } else {
379            addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_CREATE);
380        }
381        return $id;
382    }else{
383        return array($lang['uploadfail'],-1);
384    }
385}
386
387/**
388 * Moves the current version of media file to the media_attic
389 * directory
390 *
391 * @author Kate Arzamastseva <pshns@ukr.net>
392 * @param string $id
393 * @return int - revision date
394 */
395function media_saveOldRevision($id){
396    global $conf;
397    $oldf = mediaFN($id);
398    if(!@file_exists($oldf)) return '';
399    $date = filemtime($oldf);
400    $newf = mediaFN($id,$date);
401    io_makeFileDir($newf);
402    if(copy($oldf, $newf)) {
403        // Set the correct permission here.
404        // Always chmod media because they may be saved with different permissions than expected from the php umask.
405        // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.)
406        chmod($newf, $conf['fmode']);
407    }
408    return $date;
409}
410
411/**
412 * This function checks if the uploaded content is really what the
413 * mimetype says it is. We also do spam checking for text types here.
414 *
415 * We need to do this stuff because we can not rely on the browser
416 * to do this check correctly. Yes, IE is broken as usual.
417 *
418 * @author Andreas Gohr <andi@splitbrain.org>
419 * @link   http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
420 * @fixme  check all 26 magic IE filetypes here?
421 */
422function media_contentcheck($file,$mime){
423    global $conf;
424    if($conf['iexssprotect']){
425        $fh = @fopen($file, 'rb');
426        if($fh){
427            $bytes = fread($fh, 256);
428            fclose($fh);
429            if(preg_match('/<(script|a|img|html|body|iframe)[\s>]/i',$bytes)){
430                return -3;
431            }
432        }
433    }
434    if(substr($mime,0,6) == 'image/'){
435        $info = @getimagesize($file);
436        if($mime == 'image/gif' && $info[2] != 1){
437            return -1;
438        }elseif($mime == 'image/jpeg' && $info[2] != 2){
439            return -1;
440        }elseif($mime == 'image/png' && $info[2] != 3){
441            return -1;
442        }
443        # fixme maybe check other images types as well
444    }elseif(substr($mime,0,5) == 'text/'){
445        global $TEXT;
446        $TEXT = io_readFile($file);
447        if(checkwordblock()){
448            return -2;
449        }
450    }
451    return 0;
452}
453
454/**
455 * Send a notify mail on uploads
456 *
457 * @author Andreas Gohr <andi@splitbrain.org>
458 */
459function media_notify($id,$file,$mime){
460    global $lang;
461    global $conf;
462    global $INFO;
463    if(empty($conf['notify'])) return; //notify enabled?
464
465    $ip = clientIP();
466
467    $text = rawLocale('uploadmail');
468    $text = str_replace('@DATE@',dformat(),$text);
469    $text = str_replace('@BROWSER@',$_SERVER['HTTP_USER_AGENT'],$text);
470    $text = str_replace('@IPADDRESS@',$ip,$text);
471    $text = str_replace('@HOSTNAME@',gethostsbyaddrs($ip),$text);
472    $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
473    $text = str_replace('@USER@',$_SERVER['REMOTE_USER'],$text);
474    $text = str_replace('@MIME@',$mime,$text);
475    $text = str_replace('@MEDIA@',ml($id,'',true,'&',true),$text);
476    $text = str_replace('@SIZE@',filesize_h(filesize($file)),$text);
477
478    $subject = '['.$conf['title'].'] '.$lang['mail_upload'].' '.$id;
479
480    mail_send($conf['notify'],$subject,$text,$conf['mailfrom']);
481}
482
483/**
484 * List all files in a given Media namespace
485 */
486function media_filelist($ns,$auth=null,$jump='',$fullscreenview=false){
487    global $conf;
488    global $lang;
489    $ns = cleanID($ns);
490
491    // check auth our self if not given (needed for ajax calls)
492    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
493
494    if (!$fullscreenview) echo '<h1 id="media__ns">:'.hsc($ns).'</h1>'.NL;
495
496    if($auth < AUTH_READ){
497        // FIXME: print permission warning here instead?
498        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
499    }else{
500        if (!$fullscreenview) media_uploadform($ns, $auth);
501
502        $dir = utf8_encodeFN(str_replace(':','/',$ns));
503        $data = array();
504        search($data,$conf['mediadir'],'search_media',
505                array('showmsg'=>true,'depth'=>1),$dir);
506
507        if(!count($data)){
508            echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
509        }else foreach($data as $item){
510            if (!$fullscreenview) media_printfile($item,$auth,$jump);
511            else if ($fullscreenview == 'thumbs') media_printfile_thumbs($item,$auth,$jump);
512        }
513    }
514    if (!$fullscreenview) media_searchform($ns);
515}
516
517/**
518 * Prints tabs for files list actions
519 *
520 * @author Kate Arzamastseva <pshns@ukr.net>
521 * @param string $selected - opened tab
522 */
523function media_tabs_files($selected=false){
524    global $lang;
525
526    echo '<div class="mediamanager-tabs" id="id-mediamanager-tabs">';
527    $tab = '<a href="'.media_managerURL(array('tab_files' => 'files')).
528        '" rel=".mediamanager-tab-files"';
529    if (!empty($selected) && $selected == 'files') $class = 'files selected';
530    else $class = 'files';
531    $tab .= ' class="'.$class.'" >'.$lang['mediaselect'].'</a>';
532    echo $tab;
533
534    $tab = '<a href="'.media_managerURL(array('tab_files' => 'upload')).
535        '" rel=".mediamanager-tab-upload"';
536    if (!empty($selected) && $selected == 'upload') $class = 'upload selected';
537    else $class = 'upload';
538    $tab .= ' class="'.$class.'" >'.$lang['media_uploadtab'].'</a>';
539    echo $tab;
540
541    $tab = '<a href="'.media_managerURL(array('tab_files' => 'search')).
542        '" rel=".mediamanager-tab-search"';
543    if (!empty($selected) && $selected == 'search') $class = 'search selected';
544    else $class = 'search';
545    $tab .= ' class="'.$class.'" >'.$lang['media_searchtab'].'</a>';
546    echo $tab;
547
548    echo '<div class="mediamanager-clear">&nbsp;</div>';
549    echo '</div>';
550}
551
552/**
553 * Prints tabs for files details actions
554 *
555 * @author Kate Arzamastseva <pshns@ukr.net>
556 * @param string $selected - opened tab
557 */
558function media_tabs_details($selected=false){
559    global $lang;
560
561    echo '<div class="mediamanager-tabs" id="id-mediamanager-tabs-detail">';
562    $tab = '<a href="'.media_managerURL(array('tab_details' => 'view')).
563        '" rel=".mediamanager-tab-view"';
564    if (!empty($selected) && $selected == 'view') $class = 'view selected';
565    else $class = 'view';
566    $tab .= ' class="'.$class.'" >'.$lang['media_viewtab'].'</a>';
567    echo $tab;
568
569    $tab = '<a href="'.media_managerURL(array('tab_details' => 'edit')).
570        '" rel=".mediamanager-tab-edit"';
571    if (!empty($selected) && $selected == 'edit') $class = 'edit selected';
572    else $class = 'edit';
573    $tab .= ' class="'.$class.'" >'.$lang['media_edittab'].'</a>';
574    echo $tab;
575
576    $tab = '<a href="'.media_managerURL(array('tab_details' => 'history')).
577        '" rel=".mediamanager-tab-history"';
578    if (!empty($selected) && $selected == 'history') $class = 'history selected';
579    else $class = 'history';
580    $tab .= ' class="'.$class.'" >'.$lang['media_historytab'].'</a>';
581    echo $tab;
582
583    echo '<div class="mediamanager-clear">&nbsp;</div>';
584    echo '</div>';
585}
586
587/**
588 * Prints options for the tab that displays a list of all files
589 *
590 * @author Kate Arzamastseva <pshns@ukr.net>
591 */
592function media_tab_files_options(){
593    global $lang;
594
595    echo '<div class="background-container">';
596    echo '<div id="id-mediamanager-tabs-files" style="display: inline;">';
597    echo '<a href="'.media_managerURL(array('view' => 'thumbs')).'"
598        rel=".mediamanager-files-thumbnails-tab" class="mediamanager-link-thumbnails">'.
599        $lang['media_thumbsview'].'</a>';
600    echo '<a href="'.media_managerURL(array('view' => 'list')).'"
601        rel=".mediamanager-files-list-tab" class="mediamanager-link-list"
602        title="View as list">'.$lang['media_listview'].'</a>';
603
604    echo '</div>';
605    echo '<div class="mediamanager-block-sort">'.$lang['media_sort'];
606    //select
607    echo '</div>';
608    echo '<div class="mediamanager-clear">&nbsp;</div>';
609    echo '</div>';
610}
611
612/**
613 * Prints tab that displays a list of all files
614 *
615 * @author Kate Arzamastseva <pshns@ukr.net>
616 */
617function media_tab_files($ns,$auth=null,$jump='') {
618    global $lang;
619    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
620
621    echo '<div class="mediamanager-tab-files">';
622    media_tab_files_options();
623    echo '<div class="scroll-container">';
624
625    $view = $_REQUEST['view'];
626    if($auth < AUTH_READ){
627        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
628    }else{
629        if ($view == 'list') {
630            echo '<div class="mediamanager-files-list-tab">';
631            echo '</div>';
632        } else {
633            echo '<div class="mediamanager-files-thumbnails-tab">';
634            media_filelist($ns,$auth,$jump,'thumbs');
635            echo '</div>';
636        }
637    }
638    echo '</div>';
639    echo '</div>';
640}
641
642/**
643 * Prints tab that displays uploading form
644 *
645 * @author Kate Arzamastseva <pshns@ukr.net>
646 */
647function media_tab_upload($ns,$auth=null,$jump='') {
648    global $lang;
649    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
650
651    echo '<div class="mediamanager-tab-upload"">';
652    echo '<div class="background-container">';
653    echo $lang['mediaupload'];
654    echo '</div>';
655
656    echo '<div class="scroll-container">';
657    media_uploadform($ns, $auth, true);
658    echo '</div>';
659    echo '</div>';
660}
661
662/**
663 * Prints tab that displays search form
664 *
665 * @author Kate Arzamastseva <pshns@ukr.net>
666 */
667function media_tab_search($ns,$auth=null) {
668    global $lang;
669
670    $do = $_REQUEST['mediado'];
671    $query = $_REQUEST['q'];
672    if (!$query) $query = '';
673
674    echo '<div class="mediamanager-tab-search">';
675    echo '<div class="background-container">';
676    echo $lang['media_search'];
677    echo'</div>';
678
679    echo '<div class="scroll-container">';
680    media_searchform($ns, $query, true);
681
682    if($do == 'searchlist'){
683        media_searchlist($query,$ns,$auth,true);
684    }
685    echo '</div>';
686    echo '</div>';
687}
688
689/**
690 * Prints tab that displays mediafile details
691 *
692 * @author Kate Arzamastseva <pshns@ukr.net>
693 */
694function media_tab_view($image, $ns, $auth=null) {
695    global $lang, $conf;
696    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
697
698    echo '<div class="mediamanager-tab-detail-view">';
699    echo '<div class="background-container">';
700    echo $lang['media_view'];
701    echo '</div>';
702
703    echo '<div class="scroll-container">';
704    if ($auth >= AUTH_READ && $image) {
705        $info = new JpegMeta(mediaFN($image));
706        $w = (int) $info->getField('File.Width');
707        $src = ml($image);
708        echo '<img src="'.$src.'" alt="" width="99%" style="max-width: '.$w.'px;" />';
709    }
710    echo '</div>';
711    echo '</div>';
712}
713
714/**
715 * Prints tab that displays form for editing mediafile metadata
716 *
717 * @author Kate Arzamastseva <pshns@ukr.net>
718 */
719function media_tab_edit($image, $ns, $auth=null) {
720    global $lang;
721    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
722
723    echo '<div class="mediamanager-tab-detail-edit">';
724    echo '<div class="background-container">';
725    echo $lang['media_edit'];
726    echo '</div>';
727
728    echo '<div class="scroll-container">';
729    if ($image) media_metaform($image,$auth,true);
730    echo '</div>';
731    echo '</div>';
732}
733
734/**
735 * Prints tab that displays mediafile revisions
736 *
737 * @author Kate Arzamastseva <pshns@ukr.net>
738 */
739function media_tab_history($image, $ns, $auth=null) {
740    global $lang;
741    if(is_null($auth)) $auth = auth_quickaclcheck("$ns:*");
742
743    echo '<div class="mediamanager-tab-detail-history">';
744    echo '<div class="background-container">';
745    echo $lang['media_history'];
746    echo '</div>';
747
748    echo '<div class="scroll-container">';
749    $first = isset($_REQUEST['first']) ? intval($_REQUEST['first']) : 0;
750    html_revisions($first, $image);
751    echo '</div>';
752    echo '</div>';
753}
754
755/**
756 * List all files found by the search request
757 *
758 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
759 * @author Andreas Gohr <gohr@cosmocode.de>
760 * @author Kate Arzamastseva <pshns@ukr.net>
761 * @triggers MEDIA_SEARCH
762 */
763function media_searchlist($query,$ns,$auth=null,$fullscreen=false){
764    global $conf;
765    global $lang;
766
767    $ns = cleanID($ns);
768
769    if ($query) {
770        $evdata = array(
771                'ns'    => $ns,
772                'data'  => array(),
773                'query' => $query
774                );
775        $evt = new Doku_Event('MEDIA_SEARCH', $evdata);
776        if ($evt->advise_before()) {
777            $dir = utf8_encodeFN(str_replace(':','/',$evdata['ns']));
778            $pattern = '/'.preg_quote($evdata['query'],'/').'/i';
779            search($evdata['data'],
780                    $conf['mediadir'],
781                    'search_media',
782                    array('showmsg'=>false,'pattern'=>$pattern),
783                    $dir);
784        }
785        $evt->advise_after();
786        unset($evt);
787    }
788
789    if (!$fullscreen) {
790        echo '<h1 id="media__ns">'.sprintf($lang['searchmedia_in'],hsc($ns).':*').'</h1>'.NL;
791        media_searchform($ns,$query);
792    }
793
794    if(!count($evdata['data'])){
795        echo '<div class="nothing">'.$lang['nothingfound'].'</div>'.NL;
796    }else foreach($evdata['data'] as $item){
797        if (!$fullscreen) media_printfile($item,$item['perm'],'',true);
798        else media_printfile_thumbs($item,$item['perm'],'',true);
799    }
800}
801
802/**
803 * Print action links for a file depending on filetype
804 * and available permissions
805 */
806function media_fileactions($item,$auth,$fullscreen=false){
807    global $lang;
808
809    // view button
810    $link = ml($item['id'],'',true);
811    echo ' <a href="'.$link.'" target="_blank"><img src="'.DOKU_BASE.'lib/images/magnifier.png" '.
812        'alt="'.$lang['mediaview'].'" title="'.$lang['mediaview'].'" class="btn" /></a>';
813
814    // no further actions if not writable
815    if(!$item['writable']) return;
816
817    // delete button
818    if($auth >= AUTH_DELETE){
819        if (!$fullscreen) $link = DOKU_BASE.'lib/exe/mediamanager.php?delete='.rawurlencode($item['id']).
820            '&amp;sectok='.getSecurityToken();
821        else $link = media_managerURL(array('delete' => $item['id'],
822            'sectok' => getSecurityToken()));
823        echo ' <a href="'.$link.'" class="btn_media_delete" title="'.$item['id'].'">'.
824            '<img src="'.DOKU_BASE.'lib/images/trash.png" alt="'.$lang['btn_delete'].'" '.
825            'title="'.$lang['btn_delete'].'" class="btn" /></a>';
826    }
827
828    // edit button
829    if($auth >= AUTH_UPLOAD && $item['isimg'] && $item['meta']->getField('File.Mime') == 'image/jpeg'){
830        if (!$fullscreen) $link = DOKU_BASE.'lib/exe/mediamanager.php?edit='.rawurlencode($item['id']);
831        else $link = media_managerURL(array('edit' => $item['id']));
832        echo ' <a href="'.$link.'">'.
833            '<img src="'.DOKU_BASE.'lib/images/pencil.png" alt="'.$lang['metaedit'].'" '.
834            'title="'.$lang['metaedit'].'" class="btn" /></a>';
835    }
836
837}
838
839/**
840 * Formats and prints one file in the list
841 */
842function media_printfile($item,$auth,$jump,$display_namespace=false){
843    global $lang;
844    global $conf;
845
846    // Prepare zebra coloring
847    // I always wanted to use this variable name :-D
848    static $twibble = 1;
849    $twibble *= -1;
850    $zebra = ($twibble == -1) ? 'odd' : 'even';
851
852    // Automatically jump to recent action
853    if($jump == $item['id']) {
854        $jump = ' id="scroll__here" ';
855    }else{
856        $jump = '';
857    }
858
859    // Prepare fileicons
860    list($ext,$mime,$dl) = mimetype($item['file'],false);
861    $class = preg_replace('/[^_\-a-z0-9]+/i','_',$ext);
862    $class = 'select mediafile mf_'.$class;
863
864    // Prepare filename
865    $file = utf8_decodeFN($item['file']);
866
867    // Prepare info
868    $info = '';
869    if($item['isimg']){
870        $info .= (int) $item['meta']->getField('File.Width');
871        $info .= '&#215;';
872        $info .= (int) $item['meta']->getField('File.Height');
873        $info .= ' ';
874    }
875    $info .= '<i>'.dformat($item['mtime']).'</i>';
876    $info .= ' ';
877    $info .= filesize_h($item['size']);
878
879    // output
880    echo '<div class="'.$zebra.'"'.$jump.'>'.NL;
881    if (!$display_namespace) {
882        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($file).'</a> ';
883    } else {
884        echo '<a name="h_:'.$item['id'].'" class="'.$class.'">'.hsc($item['id']).'</a><br/>';
885    }
886    echo '<span class="info">('.$info.')</span>'.NL;
887    media_fileactions($item,$auth);
888    echo '<div class="example" id="ex_'.str_replace(':','_',$item['id']).'">';
889    echo $lang['mediausage'].' <code>{{:'.$item['id'].'}}</code>';
890    echo '</div>';
891    if($item['isimg']) media_printimgdetail($item);
892    echo '<div class="clearer"></div>'.NL;
893    echo '</div>'.NL;
894}
895
896/**
897 * Formats and prints one file in the list in the thumbnails view
898 *
899 * @author Kate Arzamastseva <pshns@ukr.net>
900 */
901function media_printfile_thumbs($item,$auth,$jump){
902    global $lang;
903    global $conf;
904
905    // Prepare filename
906    $file = utf8_decodeFN($item['file']);
907
908    // Prepare info
909    $info = '';
910    if($item['isimg']){
911        $info .= (int) $item['meta']->getField('File.Width');
912        $info .= '&#215;';
913        $info .= (int) $item['meta']->getField('File.Height');
914        $info .= '<br/>';
915    }
916    $info .= '<i>'.dformat($item['mtime']).'</i><br/>';
917    $info .= filesize_h($item['size']);
918
919    // output
920    echo '<div class="float-image" >';
921    if($item['isimg']) media_printimgdetail($item, true);
922    echo '<br/><a href="'.media_managerURL(array('image' => hsc($item['id']))).'" name=
923        "h_:'.$item['id'].'"  >'.hsc($file).'</a><br/>';
924    echo '<span>'.$info.'</span><br/>';
925    media_fileactions($item,$auth,true);
926    echo '</div>'.NL;
927}
928
929/**
930 * Prints a thumbnail and metainfos
931 */
932function media_printimgdetail($item, $fullscreen=false){
933    // prepare thumbnail
934    if (!$fullscreen) $size = 120;
935    else $size = 90;
936    $w = (int) $item['meta']->getField('File.Width');
937    $h = (int) $item['meta']->getField('File.Height');
938    if($w>$size || $h>$size){
939        $ratio = $item['meta']->getResizeRatio($size);
940        $w = floor($w * $ratio);
941        $h = floor($h * $ratio);
942    }
943    $src = ml($item['id'],array('w'=>$w,'h'=>$h));
944    $p = array();
945    $p['width']  = $w;
946    $p['height'] = $h;
947    $p['alt']    = $item['id'];
948    $p['class']  = 'thumb';
949    $att = buildAttributes($p);
950
951    // output
952    if ($fullscreen) {
953        echo '<a name="d_:'.$item['id'].'" >';
954        echo '<img src="'.$src.'" '.$att.' />';
955        echo '</a>';
956        return 1;
957    }
958
959    echo '<div class="detail">';
960    echo '<div class="thumb">';
961    echo '<a name="d_:'.$item['id'].'" class="select">';
962    echo '<img src="'.$src.'" '.$att.' />';
963    echo '</a>';
964    echo '</div>';
965
966    // read EXIF/IPTC data
967    $t = $item['meta']->getField(array('IPTC.Headline','xmp.dc:title'));
968    $d = $item['meta']->getField(array('IPTC.Caption','EXIF.UserComment',
969                'EXIF.TIFFImageDescription',
970                'EXIF.TIFFUserComment'));
971    if(utf8_strlen($d) > 250) $d = utf8_substr($d,0,250).'...';
972    $k = $item['meta']->getField(array('IPTC.Keywords','IPTC.Category','xmp.dc:subject'));
973
974    // print EXIF/IPTC data
975    if($t || $d || $k ){
976        echo '<p>';
977        if($t) echo '<strong>'.htmlspecialchars($t).'</strong><br />';
978        if($d) echo htmlspecialchars($d).'<br />';
979        if($t) echo '<em>'.htmlspecialchars($k).'</em>';
980        echo '</p>';
981    }
982    echo '</div>';
983}
984
985/**
986 * Build link based on the current, adding/rewriting
987 * parameters
988 *
989 * @author Kate Arzamastseva <pshns@ukr.net>
990 * @param array $params
991 * @param string $amp - separator
992 * @return string - link
993 */
994function media_managerURL($params=false, $amp='&') {
995    global $conf;
996    global $ID;
997
998    $url = $_SERVER['REQUEST_URI'];
999
1000    $urlArray = explode('?', $url, 2);
1001    $gets = @$urlArray[1];
1002    parse_str($gets, $gets);
1003
1004    if ($gets['edit']) $gets['image'] = $gets['edit'];
1005    unset($gets['edit']);
1006    unset($gets['sectok']);
1007    unset($gets['delete']);
1008
1009    if ($params) {
1010        foreach ($params as $k => $v) {
1011            $gets[$k] = $v;
1012        }
1013    }
1014    unset($gets['id']);
1015
1016    return wl($ID,$gets,false,$amp);
1017}
1018
1019/**
1020 * Print the media upload form if permissions are correct
1021 *
1022 * @author Andreas Gohr <andi@splitbrain.org>
1023 * @author Kate Arzamastseva <pshns@ukr.net>
1024 */
1025function media_uploadform($ns, $auth, $fullscreen = false){
1026    global $lang;
1027
1028    if($auth < AUTH_UPLOAD) return; //fixme print info on missing permissions?
1029
1030    // The default HTML upload form
1031    $params = array('id'      => 'dw__upload',
1032                    'enctype' => 'multipart/form-data');
1033    if (!$fullscreen) $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1034    else $params['action'] = media_managerURL(array('tab_files' => 'files'));
1035
1036    $form = new Doku_Form($params);
1037    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediaupload'] . '</div>');
1038    $form->addElement(formSecurityToken());
1039    $form->addHidden('ns', hsc($ns));
1040    $form->addElement(form_makeOpenTag('p'));
1041    $form->addElement(form_makeFileField('upload', $lang['txt_upload'].':', 'upload__file'));
1042    $form->addElement(form_makeCloseTag('p'));
1043    $form->addElement(form_makeOpenTag('p'));
1044    $form->addElement(form_makeTextField('id', '', $lang['txt_filename'].':', 'upload__name'));
1045    $form->addElement(form_makeButton('submit', '', $lang['btn_upload']));
1046    $form->addElement(form_makeCloseTag('p'));
1047
1048    if($auth >= AUTH_DELETE){
1049        $form->addElement(form_makeOpenTag('p'));
1050        $form->addElement(form_makeCheckboxField('ow', 1, $lang['txt_overwrt'], 'dw__ow', 'check'));
1051        $form->addElement(form_makeCloseTag('p'));
1052    }
1053    html_form('upload', $form);
1054
1055    // prepare flashvars for multiupload
1056    $opt = array(
1057            'L_gridname'  => $lang['mu_gridname'] ,
1058            'L_gridsize'  => $lang['mu_gridsize'] ,
1059            'L_gridstat'  => $lang['mu_gridstat'] ,
1060            'L_namespace' => $lang['mu_namespace'] ,
1061            'L_overwrite' => $lang['txt_overwrt'],
1062            'L_browse'    => $lang['mu_browse'],
1063            'L_upload'    => $lang['btn_upload'],
1064            'L_toobig'    => $lang['mu_toobig'],
1065            'L_ready'     => $lang['mu_ready'],
1066            'L_done'      => $lang['mu_done'],
1067            'L_fail'      => $lang['mu_fail'],
1068            'L_authfail'  => $lang['mu_authfail'],
1069            'L_progress'  => $lang['mu_progress'],
1070            'L_filetypes' => $lang['mu_filetypes'],
1071            'L_info'      => $lang['mu_info'],
1072            'L_lasterr'   => $lang['mu_lasterr'],
1073
1074            'O_ns'        => ":$ns",
1075            'O_backend'   => 'mediamanager.php?'.session_name().'='.session_id(),
1076            'O_maxsize'   => php_to_byte(ini_get('upload_max_filesize')),
1077            'O_extensions'=> join('|',array_keys(getMimeTypes())),
1078            'O_overwrite' => ($auth >= AUTH_DELETE),
1079            'O_sectok'    => getSecurityToken(),
1080            'O_authtok'   => auth_createToken(),
1081            );
1082    $var = buildURLparams($opt);
1083    // output the flash uploader
1084    ?>
1085        <div id="dw__flashupload" style="display:none">
1086        <div class="upload"><?php echo $lang['mu_intro']?></div>
1087        <?php echo html_flashobject('multipleUpload.swf','500','190',null,$opt); ?>
1088        </div>
1089        <?php
1090}
1091
1092/**
1093 * Print the search field form
1094 *
1095 * @author Tobias Sarnowski <sarnowski@cosmocode.de>
1096 * @author Kate Arzamastseva <pshns@ukr.net>
1097 */
1098function media_searchform($ns,$query='',$fullscreen=false){
1099    global $lang;
1100
1101    // The default HTML search form
1102    $params = array('id' => 'dw__mediasearch');
1103    if (!$fullscreen) $params['action'] = DOKU_BASE.'lib/exe/mediamanager.php';
1104    else $params['action'] = media_managerURL();
1105    $form = new Doku_Form($params);
1106    if (!$fullscreen) $form->addElement('<div class="upload">' . $lang['mediasearch'] . '</div>');
1107    $form->addElement(formSecurityToken());
1108    $form->addHidden('ns', $ns);
1109    if (!$fullscreen) $form->addHidden('do', 'searchlist');
1110    else $form->addHidden('mediado', 'searchlist');
1111    $form->addElement(form_makeOpenTag('p'));
1112    $form->addElement(form_makeTextField('q', $query,$lang['searchmedia'],'','',array('title'=>sprintf($lang['searchmedia_in'],hsc($ns).':*'))));
1113    $form->addElement(form_makeButton('submit', '', $lang['btn_search']));
1114    $form->addElement(form_makeCloseTag('p'));
1115    html_form('searchmedia', $form);
1116}
1117
1118/**
1119 * Build a tree outline of available media namespaces
1120 *
1121 * @author Andreas Gohr <andi@splitbrain.org>
1122 */
1123function media_nstree($ns){
1124    global $conf;
1125    global $lang;
1126
1127    // currently selected namespace
1128    $ns  = cleanID($ns);
1129    if(empty($ns)){
1130        global $ID;
1131        $ns = dirname(str_replace(':','/',$ID));
1132        if($ns == '.') $ns ='';
1133    }
1134    $ns  = utf8_encodeFN(str_replace(':','/',$ns));
1135
1136    $data = array();
1137    search($data,$conf['mediadir'],'search_index',array('ns' => $ns, 'nofiles' => true));
1138
1139    // wrap a list with the root level around the other namespaces
1140    $item = array( 'level' => 0, 'id' => '',
1141            'open' =>'true', 'label' => '['.$lang['mediaroot'].']');
1142
1143    echo '<ul class="idx">';
1144    echo media_nstree_li($item);
1145    echo media_nstree_item($item);
1146    echo html_buildlist($data,'idx','media_nstree_item','media_nstree_li');
1147    echo '</li>';
1148    echo '</ul>';
1149}
1150
1151/**
1152 * Userfunction for html_buildlist
1153 *
1154 * Prints a media namespace tree item
1155 *
1156 * @author Andreas Gohr <andi@splitbrain.org>
1157 */
1158function media_nstree_item($item){
1159    $pos   = strrpos($item['id'], ':');
1160    $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0);
1161    if(!$item['label']) $item['label'] = $label;
1162
1163    $ret  = '';
1164    if (!($_REQUEST['do'] == 'media'))
1165    $ret .= '<a href="'.DOKU_BASE.'lib/exe/mediamanager.php?ns='.idfilter($item['id']).'" class="idx_dir">';
1166    else $ret .= '<a href="'.media_managerURL(array('ns' => idfilter($item['id']))).'" class="idx_dir">';
1167    $ret .= $item['label'];
1168    $ret .= '</a>';
1169    return $ret;
1170}
1171
1172/**
1173 * Userfunction for html_buildlist
1174 *
1175 * Prints a media namespace tree item opener
1176 *
1177 * @author Andreas Gohr <andi@splitbrain.org>
1178 */
1179function media_nstree_li($item){
1180    $class='media level'.$item['level'];
1181    if($item['open']){
1182        $class .= ' open';
1183        $img   = DOKU_BASE.'lib/images/minus.gif';
1184        $alt   = '&minus;';
1185    }else{
1186        $class .= ' closed';
1187        $img   = DOKU_BASE.'lib/images/plus.gif';
1188        $alt   = '+';
1189    }
1190    // TODO: only deliver an image if it actually has a subtree...
1191    return '<li class="'.$class.'">'.
1192        '<img src="'.$img.'" alt="'.$alt.'" />';
1193}
1194
1195/**
1196 * Resizes the given image to the given size
1197 *
1198 * @author  Andreas Gohr <andi@splitbrain.org>
1199 */
1200function media_resize_image($file, $ext, $w, $h=0){
1201    global $conf;
1202
1203    $info = @getimagesize($file); //get original size
1204    if($info == false) return $file; // that's no image - it's a spaceship!
1205
1206    if(!$h) $h = round(($w * $info[1]) / $info[0]);
1207
1208    // we wont scale up to infinity
1209    if($w > 2000 || $h > 2000) return $file;
1210
1211    //cache
1212    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
1213    $mtime = @filemtime($local); // 0 if not exists
1214
1215    if( $mtime > filemtime($file) ||
1216            media_resize_imageIM($ext,$file,$info[0],$info[1],$local,$w,$h) ||
1217            media_resize_imageGD($ext,$file,$info[0],$info[1],$local,$w,$h) ){
1218        if($conf['fperm']) chmod($local, $conf['fperm']);
1219        return $local;
1220    }
1221    //still here? resizing failed
1222    return $file;
1223}
1224
1225/**
1226 * Crops the given image to the wanted ratio, then calls media_resize_image to scale it
1227 * to the wanted size
1228 *
1229 * Crops are centered horizontally but prefer the upper third of an vertical
1230 * image because most pics are more interesting in that area (rule of thirds)
1231 *
1232 * @author  Andreas Gohr <andi@splitbrain.org>
1233 */
1234function media_crop_image($file, $ext, $w, $h=0){
1235    global $conf;
1236
1237    if(!$h) $h = $w;
1238    $info = @getimagesize($file); //get original size
1239    if($info == false) return $file; // that's no image - it's a spaceship!
1240
1241    // calculate crop size
1242    $fr = $info[0]/$info[1];
1243    $tr = $w/$h;
1244    if($tr >= 1){
1245        if($tr > $fr){
1246            $cw = $info[0];
1247            $ch = (int) $info[0]/$tr;
1248        }else{
1249            $cw = (int) $info[1]*$tr;
1250            $ch = $info[1];
1251        }
1252    }else{
1253        if($tr < $fr){
1254            $cw = (int) $info[1]*$tr;
1255            $ch = $info[1];
1256        }else{
1257            $cw = $info[0];
1258            $ch = (int) $info[0]/$tr;
1259        }
1260    }
1261    // calculate crop offset
1262    $cx = (int) ($info[0]-$cw)/2;
1263    $cy = (int) ($info[1]-$ch)/3;
1264
1265    //cache
1266    $local = getCacheName($file,'.media.'.$cw.'x'.$ch.'.crop.'.$ext);
1267    $mtime = @filemtime($local); // 0 if not exists
1268
1269    if( $mtime > filemtime($file) ||
1270            media_crop_imageIM($ext,$file,$info[0],$info[1],$local,$cw,$ch,$cx,$cy) ||
1271            media_resize_imageGD($ext,$file,$cw,$ch,$local,$cw,$ch,$cx,$cy) ){
1272        if($conf['fperm']) chmod($local, $conf['fperm']);
1273        return media_resize_image($local,$ext, $w, $h);
1274    }
1275
1276    //still here? cropping failed
1277    return media_resize_image($file,$ext, $w, $h);
1278}
1279
1280/**
1281 * Download a remote file and return local filename
1282 *
1283 * returns false if download fails. Uses cached file if available and
1284 * wanted
1285 *
1286 * @author  Andreas Gohr <andi@splitbrain.org>
1287 * @author  Pavel Vitis <Pavel.Vitis@seznam.cz>
1288 */
1289function media_get_from_URL($url,$ext,$cache){
1290    global $conf;
1291
1292    // if no cache or fetchsize just redirect
1293    if ($cache==0)           return false;
1294    if (!$conf['fetchsize']) return false;
1295
1296    $local = getCacheName(strtolower($url),".media.$ext");
1297    $mtime = @filemtime($local); // 0 if not exists
1298
1299    //decide if download needed:
1300    if( ($mtime == 0) ||                           // cache does not exist
1301            ($cache != -1 && $mtime < time()-$cache)   // 'recache' and cache has expired
1302      ){
1303        if(media_image_download($url,$local)){
1304            return $local;
1305        }else{
1306            return false;
1307        }
1308    }
1309
1310    //if cache exists use it else
1311    if($mtime) return $local;
1312
1313    //else return false
1314    return false;
1315}
1316
1317/**
1318 * Download image files
1319 *
1320 * @author Andreas Gohr <andi@splitbrain.org>
1321 */
1322function media_image_download($url,$file){
1323    global $conf;
1324    $http = new DokuHTTPClient();
1325    $http->max_bodysize = $conf['fetchsize'];
1326    $http->timeout = 25; //max. 25 sec
1327    $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i';
1328
1329    $data = $http->get($url);
1330    if(!$data) return false;
1331
1332    $fileexists = @file_exists($file);
1333    $fp = @fopen($file,"w");
1334    if(!$fp) return false;
1335    fwrite($fp,$data);
1336    fclose($fp);
1337    if(!$fileexists and $conf['fperm']) chmod($file, $conf['fperm']);
1338
1339    // check if it is really an image
1340    $info = @getimagesize($file);
1341    if(!$info){
1342        @unlink($file);
1343        return false;
1344    }
1345
1346    return true;
1347}
1348
1349/**
1350 * resize images using external ImageMagick convert program
1351 *
1352 * @author Pavel Vitis <Pavel.Vitis@seznam.cz>
1353 * @author Andreas Gohr <andi@splitbrain.org>
1354 */
1355function media_resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){
1356    global $conf;
1357
1358    // check if convert is configured
1359    if(!$conf['im_convert']) return false;
1360
1361    // prepare command
1362    $cmd  = $conf['im_convert'];
1363    $cmd .= ' -resize '.$to_w.'x'.$to_h.'!';
1364    if ($ext == 'jpg' || $ext == 'jpeg') {
1365        $cmd .= ' -quality '.$conf['jpg_quality'];
1366    }
1367    $cmd .= " $from $to";
1368
1369    @exec($cmd,$out,$retval);
1370    if ($retval == 0) return true;
1371    return false;
1372}
1373
1374/**
1375 * crop images using external ImageMagick convert program
1376 *
1377 * @author Andreas Gohr <andi@splitbrain.org>
1378 */
1379function media_crop_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x,$ofs_y){
1380    global $conf;
1381
1382    // check if convert is configured
1383    if(!$conf['im_convert']) return false;
1384
1385    // prepare command
1386    $cmd  = $conf['im_convert'];
1387    $cmd .= ' -crop '.$to_w.'x'.$to_h.'+'.$ofs_x.'+'.$ofs_y;
1388    if ($ext == 'jpg' || $ext == 'jpeg') {
1389        $cmd .= ' -quality '.$conf['jpg_quality'];
1390    }
1391    $cmd .= " $from $to";
1392
1393    @exec($cmd,$out,$retval);
1394    if ($retval == 0) return true;
1395    return false;
1396}
1397
1398/**
1399 * resize or crop images using PHP's libGD support
1400 *
1401 * @author Andreas Gohr <andi@splitbrain.org>
1402 * @author Sebastian Wienecke <s_wienecke@web.de>
1403 */
1404function media_resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h,$ofs_x=0,$ofs_y=0){
1405    global $conf;
1406
1407    if($conf['gdlib'] < 1) return false; //no GDlib available or wanted
1408
1409    // check available memory
1410    if(!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))){
1411        return false;
1412    }
1413
1414    // create an image of the given filetype
1415    if ($ext == 'jpg' || $ext == 'jpeg'){
1416        if(!function_exists("imagecreatefromjpeg")) return false;
1417        $image = @imagecreatefromjpeg($from);
1418    }elseif($ext == 'png') {
1419        if(!function_exists("imagecreatefrompng")) return false;
1420        $image = @imagecreatefrompng($from);
1421
1422    }elseif($ext == 'gif') {
1423        if(!function_exists("imagecreatefromgif")) return false;
1424        $image = @imagecreatefromgif($from);
1425    }
1426    if(!$image) return false;
1427
1428    if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){
1429        $newimg = @imagecreatetruecolor ($to_w, $to_h);
1430    }
1431    if(!$newimg) $newimg = @imagecreate($to_w, $to_h);
1432    if(!$newimg){
1433        imagedestroy($image);
1434        return false;
1435    }
1436
1437    //keep png alpha channel if possible
1438    if($ext == 'png' && $conf['gdlib']>1 && function_exists('imagesavealpha')){
1439        imagealphablending($newimg, false);
1440        imagesavealpha($newimg,true);
1441    }
1442
1443    //keep gif transparent color if possible
1444    if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
1445        if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
1446            $transcolorindex = @imagecolortransparent($image);
1447            if($transcolorindex >= 0 ) { //transparent color exists
1448                $transcolor = @imagecolorsforindex($image, $transcolorindex);
1449                $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
1450                @imagefill($newimg, 0, 0, $transcolorindex);
1451                @imagecolortransparent($newimg, $transcolorindex);
1452            }else{ //filling with white
1453                $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1454                @imagefill($newimg, 0, 0, $whitecolorindex);
1455            }
1456        }else{ //filling with white
1457            $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
1458            @imagefill($newimg, 0, 0, $whitecolorindex);
1459        }
1460    }
1461
1462    //try resampling first
1463    if(function_exists("imagecopyresampled")){
1464        if(!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
1465            imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1466        }
1467    }else{
1468        imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
1469    }
1470
1471    $okay = false;
1472    if ($ext == 'jpg' || $ext == 'jpeg'){
1473        if(!function_exists('imagejpeg')){
1474            $okay = false;
1475        }else{
1476            $okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
1477        }
1478    }elseif($ext == 'png') {
1479        if(!function_exists('imagepng')){
1480            $okay = false;
1481        }else{
1482            $okay =  imagepng($newimg, $to);
1483        }
1484    }elseif($ext == 'gif') {
1485        if(!function_exists('imagegif')){
1486            $okay = false;
1487        }else{
1488            $okay = imagegif($newimg, $to);
1489        }
1490    }
1491
1492    // destroy GD image ressources
1493    if($image) imagedestroy($image);
1494    if($newimg) imagedestroy($newimg);
1495
1496    return $okay;
1497}
1498
1499/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
1500