1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
|
<?php
/**
* ownCloud
*
* @author Frank Karlitschek
* @author Jakob Sack
* @copyright 2012 Frank Karlitschek frank@owncloud.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* Collection of useful functions
*/
class OC_Helper {
private static $mimetypes=array();
private static $tmpFiles=array();
private static $mimetypeIcons = array();
/**
* @brief Creates an url using a defined route
* @param $route
* @param array $parameters
* @return
* @internal param array $args with param=>value, will be appended to the returned url
* @returns the url
*
* Returns a url to the given app and file.
*/
public static function linkToRoute( $route, $parameters = array() ) {
$urlLinkTo = OC::getRouter()->generate($route, $parameters);
return $urlLinkTo;
}
/**
* @brief Creates an url
* @param string $app app
* @param string $file file
* @param array $args array with param=>value, will be appended to the returned url
* The value of $args will be urlencoded
* @return string the url
*
* Returns a url to the given app and file.
*/
public static function linkTo( $app, $file, $args = array() ) {
if( $app != '' ) {
$app_path = OC_App::getAppPath($app);
// Check if the app is in the app folder
if( $app_path && file_exists( $app_path.'/'.$file )) {
if(substr($file, -3) == 'php' || substr($file, -3) == 'css') {
$urlLinkTo = OC::$WEBROOT . '/index.php/apps/' . $app;
$urlLinkTo .= ($file!='index.php') ? '/' . $file : '';
}else{
$urlLinkTo = OC_App::getAppWebPath($app) . '/' . $file;
}
}
else{
$urlLinkTo = OC::$WEBROOT . '/' . $app . '/' . $file;
}
}
else{
if( file_exists( OC::$SERVERROOT . '/core/'. $file )) {
$urlLinkTo = OC::$WEBROOT . '/core/'.$file;
}
else{
$urlLinkTo = OC::$WEBROOT . '/'.$file;
}
}
if ($args && $query = http_build_query($args, '', '&')) {
$urlLinkTo .= '?'.$query;
}
return $urlLinkTo;
}
/**
* @brief Creates an absolute url
* @param string $app app
* @param string $file file
* @param array $args array with param=>value, will be appended to the returned url
* The value of $args will be urlencoded
* @return string the url
*
* Returns a absolute url to the given app and file.
*/
public static function linkToAbsolute( $app, $file, $args = array() ) {
$urlLinkTo = self::linkTo( $app, $file, $args );
return self::makeURLAbsolute($urlLinkTo);
}
/**
* @brief Makes an $url absolute
* @param string $url the url
* @return string the absolute url
*
* Returns a absolute url to the given app and file.
*/
public static function makeURLAbsolute( $url )
{
return OC_Request::serverProtocol(). '://' . OC_Request::serverHost() . $url;
}
/**
* @brief Creates an url for remote use
* @param string $service id
* @return string the url
*
* Returns a url to the given service.
*/
public static function linkToRemoteBase( $service ) {
return self::linkTo( '', 'remote.php') . '/' . $service;
}
/**
* @brief Creates an absolute url for remote use
* @param string $service id
* @param bool $add_slash
* @return string the url
*
* Returns a absolute url to the given service.
*/
public static function linkToRemote( $service, $add_slash = true ) {
return self::makeURLAbsolute(self::linkToRemoteBase($service))
. (($add_slash && $service[strlen($service)-1]!='/')?'/':'');
}
/**
* @brief Creates an absolute url for public use
* @param string $service id
* @param bool $add_slash
* @return string the url
*
* Returns a absolute url to the given service.
*/
public static function linkToPublic($service, $add_slash = false) {
return self::linkToAbsolute( '', 'public.php') . '?service=' . $service
. (($add_slash && $service[strlen($service)-1]!='/')?'/':'');
}
/**
* @brief Creates path to an image
* @param string $app app
* @param string $image image name
* @return string the url
*
* Returns the path to the image.
*/
public static function imagePath( $app, $image ) {
// Read the selected theme from the config file
$theme = OC_Util::getTheme();
//if a theme has a png but not an svg always use the png
$basename = substr(basename($image),0,-4);
// Check if the app is in the app folder
if( file_exists( OC::$SERVERROOT."/themes/$theme/apps/$app/img/$image" )) {
return OC::$WEBROOT."/themes/$theme/apps/$app/img/$image";
}elseif( ! file_exists( OC::$SERVERROOT . "/themes/$theme/apps/$app/img/$basename.svg")
&& file_exists( OC::$SERVERROOT . "/themes/$theme/apps/$app/img/$basename.png")) {
return OC::$WEBROOT . "/themes/$theme/apps/$app/img/$basename.png";
}elseif( file_exists(OC_App::getAppPath($app)."/img/$image" )) {
return OC_App::getAppWebPath($app)."/img/$image";
}elseif( ! file_exists( OC_App::getAppPath($app) . "/img/$basename.svg")
&& file_exists( OC_App::getAppPath($app) . "/img/$basename.png")) {
return OC_App::getAppPath($app) . "/img/$basename.png";
}elseif( !empty( $app ) and file_exists( OC::$SERVERROOT."/themes/$theme/$app/img/$image" )) {
return OC::$WEBROOT."/themes/$theme/$app/img/$image";
}elseif( !empty($app) and (!file_exists( OC::$SERVERROOT . "/themes/$theme/$app/img/$basename.svg")
&& file_exists( OC::$SERVERROOT . "/themes/$theme/$app/img/$basename.png"))) {
return OC::$WEBROOT . "/themes/$theme/$app/img/$basename.png";
}elseif( !empty( $app ) and file_exists( OC::$SERVERROOT."/$app/img/$image" )) {
return OC::$WEBROOT."/$app/img/$image";
}elseif( !empty($app) and (!file_exists( OC::$SERVERROOT . "/$app/img/$basename.svg")
&& file_exists( OC::$SERVERROOT . "/$app/img/$basename.png"))) {
return OC::$WEBROOT . "/$app/img/$basename.png";
}elseif( file_exists( OC::$SERVERROOT."/themes/$theme/core/img/$image" )) {
return OC::$WEBROOT."/themes/$theme/core/img/$image";
}elseif( ! file_exists( OC::$SERVERROOT . "/themes/$theme/core/img/$basename.svg")
&& file_exists( OC::$SERVERROOT . "/themes/$theme/core/img/$basename.png")) {
return OC::$WEBROOT . "/themes/$theme/core/img/$basename.png";
}elseif( file_exists( OC::$SERVERROOT."/core/img/$image" )) {
return OC::$WEBROOT."/core/img/$image";
}else{
echo('image not found: image:'.$image.' webroot:'.OC::$WEBROOT.' serverroot:'.OC::$SERVERROOT);
die();
}
}
/**
* @brief get path to icon of file type
* @param string $mimetype mimetype
* @return string the url
*
* Returns the path to the image of this file type.
*/
public static function mimetypeIcon($mimetype) {
$alias = array('application/xml' => 'code/xml');
if (isset($alias[$mimetype])) {
$mimetype = $alias[$mimetype];
}
if (isset(self::$mimetypeIcons[$mimetype])) {
return self::$mimetypeIcons[$mimetype];
}
// Replace slash and backslash with a minus
$icon = str_replace('/', '-', $mimetype);
$icon = str_replace( '\\', '-', $icon);
// Is it a dir?
if ($mimetype === 'dir') {
self::$mimetypeIcons[$mimetype] = OC::$WEBROOT.'/core/img/filetypes/folder.png';
return OC::$WEBROOT.'/core/img/filetypes/folder.png';
}
// Icon exists?
if (file_exists(OC::$SERVERROOT.'/core/img/filetypes/'.$icon.'.png')) {
self::$mimetypeIcons[$mimetype] = OC::$WEBROOT.'/core/img/filetypes/'.$icon.'.png';
return OC::$WEBROOT.'/core/img/filetypes/'.$icon.'.png';
}
// Try only the first part of the filetype
$mimePart = substr($icon, 0, strpos($icon, '-'));
if (file_exists(OC::$SERVERROOT.'/core/img/filetypes/'.$mimePart.'.png')) {
self::$mimetypeIcons[$mimetype] = OC::$WEBROOT.'/core/img/filetypes/'.$mimePart.'.png';
return OC::$WEBROOT.'/core/img/filetypes/'.$mimePart.'.png';
} else {
self::$mimetypeIcons[$mimetype] = OC::$WEBROOT.'/core/img/filetypes/file.png';
return OC::$WEBROOT.'/core/img/filetypes/file.png';
}
}
/**
* @brief Make a human file size
* @param int $bytes file size in bytes
* @return string a human readable file size
*
* Makes 2048 to 2 kB.
*/
public static function humanFileSize( $bytes ) {
if( $bytes < 0 ) {
$l = OC_L10N::get('lib');
return $l->t("couldn't be determined");
}
if( $bytes < 1024 ) {
return "$bytes B";
}
$bytes = round( $bytes / 1024, 1 );
if( $bytes < 1024 ) {
return "$bytes kB";
}
$bytes = round( $bytes / 1024, 1 );
if( $bytes < 1024 ) {
return "$bytes MB";
}
// Wow, heavy duty for owncloud
$bytes = round( $bytes / 1024, 1 );
return "$bytes GB";
}
/**
* @brief Make a computer file size
* @param string $str file size in a fancy format
* @return int a file size in bytes
*
* Makes 2kB to 2048.
*
* Inspired by: http://www.php.net/manual/en/function.filesize.php#92418
*/
public static function computerFileSize( $str ) {
$str=strtolower($str);
$bytes_array = array(
'b' => 1,
'k' => 1024,
'kb' => 1024,
'mb' => 1024 * 1024,
'm' => 1024 * 1024,
'gb' => 1024 * 1024 * 1024,
'g' => 1024 * 1024 * 1024,
'tb' => 1024 * 1024 * 1024 * 1024,
't' => 1024 * 1024 * 1024 * 1024,
'pb' => 1024 * 1024 * 1024 * 1024 * 1024,
'p' => 1024 * 1024 * 1024 * 1024 * 1024,
);
$bytes = floatval($str);
if (preg_match('#([kmgtp]?b?)$#si', $str, $matches) && !empty($bytes_array[$matches[1]])) {
$bytes *= $bytes_array[$matches[1]];
}
$bytes = round($bytes, 2);
return $bytes;
}
/**
* @brief Recursive editing of file permissions
* @param string $path path to file or folder
* @param int $filemode unix style file permissions
* @return bool
*/
static function chmodr($path, $filemode) {
if (!is_dir($path))
return chmod($path, $filemode);
$dh = opendir($path);
if(is_resource($dh)) {
while (($file = readdir($dh)) !== false) {
if($file != '.' && $file != '..') {
$fullpath = $path.'/'.$file;
if(is_link($fullpath))
return false;
elseif(!is_dir($fullpath) && !@chmod($fullpath, $filemode))
return false;
elseif(!self::chmodr($fullpath, $filemode))
return false;
}
}
closedir($dh);
}
if(@chmod($path, $filemode))
return true;
else
return false;
}
/**
* @brief Recursive copying of folders
* @param string $src source folder
* @param string $dest target folder
*
*/
static function copyr($src, $dest) {
if(is_dir($src)) {
if(!is_dir($dest)) {
mkdir($dest);
}
$files = scandir($src);
foreach ($files as $file) {
if ($file != "." && $file != "..") {
self::copyr("$src/$file", "$dest/$file");
}
}
}elseif(file_exists($src) && !\OC\Files\Filesystem::isFileBlacklisted($src)) {
copy($src, $dest);
}
}
/**
* @brief Recursive deletion of folders
* @param string $dir path to the folder
* @return bool
*/
static function rmdirr($dir) {
if(is_dir($dir)) {
$files=scandir($dir);
foreach($files as $file) {
if ($file != "." && $file != "..") {
self::rmdirr("$dir/$file");
}
}
rmdir($dir);
}elseif(file_exists($dir)) {
unlink($dir);
}
if(file_exists($dir)) {
return false;
}else{
return true;
}
}
/**
* get the mimetype form a local file
* @param string $path
* @return string
* does NOT work for ownClouds filesystem, use OC_FileSystem::getMimeType instead
*/
static function getMimeType($path) {
$isWrapped=(strpos($path, '://')!==false) and (substr($path, 0, 7)=='file://');
if (@is_dir($path)) {
// directories are easy
return "httpd/unix-directory";
}
if(strpos($path, '.')) {
//try to guess the type by the file extension
if(!self::$mimetypes || self::$mimetypes != include 'mimetypes.list.php') {
self::$mimetypes=include 'mimetypes.list.php';
}
$extension=strtolower(strrchr(basename($path), "."));
$extension=substr($extension, 1);//remove leading .
$mimeType=(isset(self::$mimetypes[$extension]))?self::$mimetypes[$extension]:'application/octet-stream';
}else{
$mimeType='application/octet-stream';
}
if($mimeType=='application/octet-stream' and function_exists('finfo_open')
and function_exists('finfo_file') and $finfo=finfo_open(FILEINFO_MIME)) {
$info = @strtolower(finfo_file($finfo, $path));
if($info) {
$mimeType=substr($info, 0, strpos($info, ';'));
}
finfo_close($finfo);
}
if (!$isWrapped and $mimeType=='application/octet-stream' && function_exists("mime_content_type")) {
// use mime magic extension if available
$mimeType = mime_content_type($path);
}
if (!$isWrapped and $mimeType=='application/octet-stream' && OC_Helper::canExecute("file")) {
// it looks like we have a 'file' command,
// lets see if it does have mime support
$path=escapeshellarg($path);
$fp = popen("file -b --mime-type $path 2>/dev/null", "r");
$reply = fgets($fp);
pclose($fp);
//trim the newline
$mimeType = trim($reply);
}
return $mimeType;
}
/**
* get the mimetype form a data string
* @param string $data
* @return string
*/
static function getStringMimeType($data) {
if(function_exists('finfo_open') and function_exists('finfo_file')) {
$finfo=finfo_open(FILEINFO_MIME);
return finfo_buffer($finfo, $data);
}else{
$tmpFile=OC_Helper::tmpFile();
$fh=fopen($tmpFile, 'wb');
fwrite($fh, $data, 8024);
fclose($fh);
$mime=self::getMimeType($tmpFile);
unset($tmpFile);
return $mime;
}
}
/**
* @brief Checks $_REQUEST contains a var for the $s key. If so, returns the html-escaped value of this var; otherwise returns the default value provided by $d.
* @param string $s name of the var to escape, if set.
* @param string $d default value.
* @return string the print-safe value.
*
*/
//FIXME: should also check for value validation (i.e. the email is an email).
public static function init_var($s, $d="") {
$r = $d;
if(isset($_REQUEST[$s]) && !empty($_REQUEST[$s])) {
$r = OC_Util::sanitizeHTML($_REQUEST[$s]);
}
return $r;
}
/**
* returns "checked"-attribute if request contains selected radio element
* OR if radio element is the default one -- maybe?
* @param string $s Name of radio-button element name
* @param string $v Value of current radio-button element
* @param string $d Value of default radio-button element
*/
public static function init_radio($s, $v, $d) {
if((isset($_REQUEST[$s]) && $_REQUEST[$s]==$v) || (!isset($_REQUEST[$s]) && $v == $d))
print "checked=\"checked\" ";
}
/**
* detect if a given program is found in the search PATH
*
* @param $name
* @param bool $path
* @internal param string $program name
* @internal param string $optional search path, defaults to $PATH
* @return bool true if executable program found in path
*/
public static function canExecute($name, $path = false) {
// path defaults to PATH from environment if not set
if ($path === false) {
$path = getenv("PATH");
}
// check method depends on operating system
if (!strncmp(PHP_OS, "WIN", 3)) {
// on Windows an appropriate COM or EXE file needs to exist
$exts = array(".exe", ".com");
$check_fn = "file_exists";
} else {
// anywhere else we look for an executable file of that name
$exts = array("");
$check_fn = "is_executable";
}
// Default check will be done with $path directories :
$dirs = explode(PATH_SEPARATOR, $path);
// WARNING : We have to check if open_basedir is enabled :
$obd = ini_get('open_basedir');
if($obd != "none") {
$obd_values = explode(PATH_SEPARATOR, $obd);
if(count($obd_values) > 0 and $obd_values[0]) {
// open_basedir is in effect !
// We need to check if the program is in one of these dirs :
$dirs = $obd_values;
}
}
foreach($dirs as $dir) {
foreach($exts as $ext) {
if($check_fn("$dir/$name".$ext))
return true;
}
}
return false;
}
/**
* copy the contents of one stream to another
* @param resource $source
* @param resource $target
* @return array the number of bytes copied and result
*/
public static function streamCopy($source, $target) {
if (!$source or !$target) {
return array(0, false);
}
$result = true;
$count = 0;
while(!feof($source)) {
if ( ( $c = fwrite($target, fread($source, 8192)) ) === false) {
$result = false;
} else {
$count += $c;
}
}
return array($count, $result);
}
/**
* create a temporary file with an unique filename
* @param string $postfix
* @return string
*
* temporary files are automatically cleaned up after the script is finished
*/
public static function tmpFile($postfix='') {
$file=get_temp_dir().'/'.md5(time().rand()).$postfix;
$fh=fopen($file, 'w');
fclose($fh);
self::$tmpFiles[]=$file;
return $file;
}
/**
* create a temporary file with an unique filename. It will not be deleted
* automatically
* @param string $postfix
* @return string
*
*/
public static function tmpFileNoClean($postfix='') {
$tmpDirNoClean=get_temp_dir().'/oc-noclean/';
if (!file_exists($tmpDirNoClean) || !is_dir($tmpDirNoClean)) {
if (file_exists($tmpDirNoClean)) {
unlink($tmpDirNoClean);
}
mkdir($tmpDirNoClean);
}
$file=$tmpDirNoClean.md5(time().rand()).$postfix;
$fh=fopen($file, 'w');
fclose($fh);
return $file;
}
/**
* create a temporary folder with an unique filename
* @return string
*
* temporary files are automatically cleaned up after the script is finished
*/
public static function tmpFolder() {
$path=get_temp_dir().'/'.md5(time().rand());
mkdir($path);
self::$tmpFiles[]=$path;
return $path.'/';
}
/**
* remove all files created by self::tmpFile
*/
public static function cleanTmp() {
$leftoversFile=get_temp_dir().'/oc-not-deleted';
if(file_exists($leftoversFile)) {
$leftovers=file($leftoversFile);
foreach($leftovers as $file) {
self::rmdirr($file);
}
unlink($leftoversFile);
}
foreach(self::$tmpFiles as $file) {
if(file_exists($file)) {
if(!self::rmdirr($file)) {
file_put_contents($leftoversFile, $file."\n", FILE_APPEND);
}
}
}
}
/**
* remove all files created by self::tmpFileNoClean
*/
public static function cleanTmpNoClean() {
$tmpDirNoCleanFile=get_temp_dir().'/oc-noclean/';
if(file_exists($tmpDirNoCleanFile)) {
self::rmdirr($tmpDirNoCleanFile);
}
}
/**
* Adds a suffix to the name in case the file exists
*
* @param $path
* @param $filename
* @return string
*/
public static function buildNotExistingFileName($path, $filename) {
if($path==='/') {
$path='';
}
if ($pos = strrpos($filename, '.')) {
$name = substr($filename, 0, $pos);
$ext = substr($filename, $pos);
} else {
$name = $filename;
$ext = '';
}
$newpath = $path . '/' . $filename;
$counter = 2;
while (\OC\Files\Filesystem::file_exists($newpath)) {
$newname = $name . ' (' . $counter . ')' . $ext;
$newpath = $path . '/' . $newname;
$counter++;
}
return $newpath;
}
/**
* @brief Checks if $sub is a subdirectory of $parent
*
* @param string $sub
* @param string $parent
* @return bool
*/
public static function issubdirectory($sub, $parent) {
if (strpos(realpath($sub), realpath($parent)) === 0) {
return true;
}
return false;
}
/**
* @brief Returns an array with all keys from input lowercased or uppercased. Numbered indices are left as is.
*
* @param array $input The array to work on
* @param int $case Either MB_CASE_UPPER or MB_CASE_LOWER (default)
* @param string $encoding The encoding parameter is the character encoding. Defaults to UTF-8
* @return array
*
* Returns an array with all keys from input lowercased or uppercased. Numbered indices are left as is.
* based on http://www.php.net/manual/en/function.array-change-key-case.php#107715
*
*/
public static function mb_array_change_key_case($input, $case = MB_CASE_LOWER, $encoding = 'UTF-8') {
$case = ($case != MB_CASE_UPPER) ? MB_CASE_LOWER : MB_CASE_UPPER;
$ret = array();
foreach ($input as $k => $v) {
$ret[mb_convert_case($k, $case, $encoding)] = $v;
}
return $ret;
}
/**
* @brief replaces a copy of string delimited by the start and (optionally) length parameters with the string given in replacement.
*
* @param $string
* @param string $replacement The replacement string.
* @param int $start If start is positive, the replacing will begin at the start'th offset into string. If start is negative, the replacing will begin at the start'th character from the end of string.
* @param int $length Length of the part to be replaced
* @param string $encoding The encoding parameter is the character encoding. Defaults to UTF-8
* @internal param string $input The input string. .Opposite to the PHP build-in function does not accept an array.
* @return string
*/
public static function mb_substr_replace($string, $replacement, $start, $length = null, $encoding = 'UTF-8') {
$start = intval($start);
$length = intval($length);
$string = mb_substr($string, 0, $start, $encoding) .
$replacement .
mb_substr($string, $start+$length, mb_strlen($string, 'UTF-8')-$start, $encoding);
return $string;
}
/**
* @brief Replace all occurrences of the search string with the replacement string
*
* @param string $search The value being searched for, otherwise known as the needle.
* @param string $replace The replacement
* @param string $subject The string or array being searched and replaced on, otherwise known as the haystack.
* @param string $encoding The encoding parameter is the character encoding. Defaults to UTF-8
* @param int $count If passed, this will be set to the number of replacements performed.
* @return string
*
*/
public static function mb_str_replace($search, $replace, $subject, $encoding = 'UTF-8', &$count = null) {
$offset = -1;
$length = mb_strlen($search, $encoding);
while(($i = mb_strrpos($subject, $search, $offset, $encoding)) !== false ) {
$subject = OC_Helper::mb_substr_replace($subject, $replace, $i, $length);
$offset = $i - mb_strlen($subject, $encoding);
$count++;
}
return $subject;
}
/**
* @brief performs a search in a nested array
* @param array $haystack the array to be searched
* @param string $needle the search string
* @param string $index optional, only search this key name
* @return mixed the key of the matching field, otherwise false
*
* performs a search in a nested array
*
* taken from http://www.php.net/manual/en/function.array-search.php#97645
*/
public static function recursiveArraySearch($haystack, $needle, $index = null) {
$aIt = new RecursiveArrayIterator($haystack);
$it = new RecursiveIteratorIterator($aIt);
while($it->valid()) {
if (((isset($index) AND ($it->key() == $index)) OR (!isset($index))) AND ($it->current() == $needle)) {
return $aIt->key();
}
$it->next();
}
return false;
}
/**
* Shortens str to maxlen by replacing characters in the middle with '...', eg.
* ellipsis('a very long string with lots of useless info to make a better example', 14) becomes 'a very ...example'
* @param string $str the string
* @param string $maxlen the maximum length of the result
* @return string with at most maxlen characters
*/
public static function ellipsis($str, $maxlen) {
if (strlen($str) > $maxlen) {
$characters = floor($maxlen / 2);
return substr($str, 0, $characters) . '...' . substr($str, -1 * $characters);
}
return $str;
}
/**
* @brief calculates the maximum upload size respecting system settings, free space and user quota
*
* @param $dir the current folder where the user currently operates
* @return number of bytes representing
*/
public static function maxUploadFilesize($dir) {
$upload_max_filesize = OCP\Util::computerFileSize(ini_get('upload_max_filesize'));
$post_max_size = OCP\Util::computerFileSize(ini_get('post_max_size'));
$maxUploadFilesize = min($upload_max_filesize, $post_max_size);
$freeSpace = \OC\Files\Filesystem::free_space($dir);
if($freeSpace !== \OC\Files\FREE_SPACE_UNKNOWN){
$freeSpace = max($freeSpace, 0);
return min($maxUploadFilesize, $freeSpace);
} else {
return $maxUploadFilesize;
}
}
/**
* Checks if a function is available
* @param string $function_name
* @return bool
*/
public static function is_function_enabled($function_name) {
if (!function_exists($function_name)) {
return false;
}
$disabled = explode(', ', ini_get('disable_functions'));
if (in_array($function_name, $disabled)) {
return false;
}
$disabled = explode(', ', ini_get('suhosin.executor.func.blacklist'));
if (in_array($function_name, $disabled)) {
return false;
}
return true;
}
/**
* Calculate the disc space for the given path
*
* @param string $path
* @return array
*/
public static function getStorageInfo($path) {
$rootInfo = \OC\Files\Filesystem::getFileInfo($path);
$used = $rootInfo['size'];
if ($used < 0) {
$used = 0;
}
$free = \OC\Files\Filesystem::free_space($path);
if ($free >= 0) {
$total = $free + $used;
} else {
$total = $free; //either unknown or unlimited
}
if ($total == 0) {
$total = 1; // prevent division by zero
}
if ($total >= 0) {
$relative = round(($used / $total) * 10000) / 100;
} else {
$relative = 0;
}
return array('free' => $free, 'used' => $used, 'total' => $total, 'relative' => $relative);
}
}
|