-
Notifications
You must be signed in to change notification settings - Fork 0
/
phpthumb.functions.php
1046 lines (922 loc) · 33.1 KB
/
phpthumb.functions.php
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
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<?php
//////////////////////////////////////////////////////////////
/// phpThumb() by James Heinrich <[email protected]> //
// available at http://phpthumb.sourceforge.net ///
//////////////////////////////////////////////////////////////
/// //
// phpthumb.functions.php - general support functions //
// ///
//////////////////////////////////////////////////////////////
class phpthumb_functions {
static function user_function_exists($functionname) {
if (function_exists('get_defined_functions')) {
static $get_defined_functions = array();
if (empty($get_defined_functions)) {
$get_defined_functions = get_defined_functions();
}
return in_array(strtolower($functionname), $get_defined_functions['user']);
}
return function_exists($functionname);
}
static function builtin_function_exists($functionname) {
if (function_exists('get_defined_functions')) {
static $get_defined_functions = array();
if (empty($get_defined_functions)) {
$get_defined_functions = get_defined_functions();
}
return in_array(strtolower($functionname), $get_defined_functions['internal']);
}
return function_exists($functionname);
}
static function version_compare_replacement_sub($version1, $version2, $operator='') {
// If you specify the third optional operator argument, you can test for a particular relationship.
// The possible operators are: <, lt, <=, le, >, gt, >=, ge, ==, =, eq, !=, <>, ne respectively.
// Using this argument, the function will return 1 if the relationship is the one specified by the operator, 0 otherwise.
// If a part contains special version strings these are handled in the following order:
// (any string not found in this list) < (dev) < (alpha = a) < (beta = b) < (RC = rc) < (#) < (pl = p)
static $versiontype_lookup = array();
if (empty($versiontype_lookup)) {
$versiontype_lookup['dev'] = 10001;
$versiontype_lookup['a'] = 10002;
$versiontype_lookup['alpha'] = 10002;
$versiontype_lookup['b'] = 10003;
$versiontype_lookup['beta'] = 10003;
$versiontype_lookup['RC'] = 10004;
$versiontype_lookup['rc'] = 10004;
$versiontype_lookup['#'] = 10005;
$versiontype_lookup['pl'] = 10006;
$versiontype_lookup['p'] = 10006;
}
$version1 = (isset($versiontype_lookup[$version1]) ? $versiontype_lookup[$version1] : $version1);
$version2 = (isset($versiontype_lookup[$version2]) ? $versiontype_lookup[$version2] : $version2);
switch ($operator) {
case '<':
case 'lt':
return intval($version1 < $version2);
break;
case '<=':
case 'le':
return intval($version1 <= $version2);
break;
case '>':
case 'gt':
return intval($version1 > $version2);
break;
case '>=':
case 'ge':
return intval($version1 >= $version2);
break;
case '==':
case '=':
case 'eq':
return intval($version1 == $version2);
break;
case '!=':
case '<>':
case 'ne':
return intval($version1 != $version2);
break;
}
if ($version1 == $version2) {
return 0;
} elseif ($version1 < $version2) {
return -1;
}
return 1;
}
static function version_compare_replacement($version1, $version2, $operator='') {
if (function_exists('version_compare')) {
// built into PHP v4.1.0+
return version_compare($version1, $version2, $operator);
}
// The function first replaces _, - and + with a dot . in the version strings
$version1 = strtr($version1, '_-+', '...');
$version2 = strtr($version2, '_-+', '...');
// and also inserts dots . before and after any non number so that for example '4.3.2RC1' becomes '4.3.2.RC.1'.
// Then it splits the results like if you were using explode('.',$ver). Then it compares the parts starting from left to right.
$version1 = preg_replace('#([0-9]+)([A-Z]+)([0-9]+)#i', "$1.$2.$3", $version1);
$version2 = preg_replace('#([0-9]+)([A-Z]+)([0-9]+)#i', "$1.$2.$3", $version2);
$parts1 = explode('.', $version1);
$parts2 = explode('.', $version1);
$parts_count = max(count($parts1), count($parts2));
for ($i = 0; $i < $parts_count; $i++) {
$comparison = phpthumb_functions::version_compare_replacement_sub($version1, $version2, $operator);
if ($comparison != 0) {
return $comparison;
}
}
return 0;
}
static function phpinfo_array() {
static $phpinfo_array = array();
if (empty($phpinfo_array)) {
ob_start();
phpinfo();
$phpinfo = ob_get_contents();
ob_end_clean();
$phpinfo_array = explode("\n", $phpinfo);
}
return $phpinfo_array;
}
static function exif_info() {
static $exif_info = array();
if (empty($exif_info)) {
// based on code by johnschaefer at gmx dot de
// from PHP help on gd_info()
$exif_info = array(
'EXIF Support' => '',
'EXIF Version' => '',
'Supported EXIF Version' => '',
'Supported filetypes' => ''
);
$phpinfo_array = phpthumb_functions::phpinfo_array();
foreach ($phpinfo_array as $line) {
$line = trim(strip_tags($line));
foreach ($exif_info as $key => $value) {
if (strpos($line, $key) === 0) {
$newvalue = trim(str_replace($key, '', $line));
$exif_info[$key] = $newvalue;
}
}
}
}
return $exif_info;
}
static function ImageTypeToMIMEtype($imagetype) {
if (function_exists('image_type_to_mime_type') && ($imagetype >= 1) && ($imagetype <= 16)) {
// PHP v4.3.0+
return image_type_to_mime_type($imagetype);
}
static $image_type_to_mime_type = array(
1 => 'image/gif', // IMAGETYPE_GIF
2 => 'image/jpeg', // IMAGETYPE_JPEG
3 => 'image/png', // IMAGETYPE_PNG
4 => 'application/x-shockwave-flash', // IMAGETYPE_SWF
5 => 'image/psd', // IMAGETYPE_PSD
6 => 'image/bmp', // IMAGETYPE_BMP
7 => 'image/tiff', // IMAGETYPE_TIFF_II (intel byte order)
8 => 'image/tiff', // IMAGETYPE_TIFF_MM (motorola byte order)
9 => 'application/octet-stream', // IMAGETYPE_JPC
10 => 'image/jp2', // IMAGETYPE_JP2
11 => 'application/octet-stream', // IMAGETYPE_JPX
12 => 'application/octet-stream', // IMAGETYPE_JB2
13 => 'application/x-shockwave-flash', // IMAGETYPE_SWC
14 => 'image/iff', // IMAGETYPE_IFF
15 => 'image/vnd.wap.wbmp', // IMAGETYPE_WBMP
16 => 'image/xbm', // IMAGETYPE_XBM
'gif' => 'image/gif', // IMAGETYPE_GIF
'jpg' => 'image/jpeg', // IMAGETYPE_JPEG
'jpeg' => 'image/jpeg', // IMAGETYPE_JPEG
'png' => 'image/png', // IMAGETYPE_PNG
'bmp' => 'image/bmp', // IMAGETYPE_BMP
'ico' => 'image/x-icon',
);
return (isset($image_type_to_mime_type[$imagetype]) ? $image_type_to_mime_type[$imagetype] : false);
}
static function TranslateWHbyAngle($width, $height, $angle) {
if (($angle % 180) == 0) {
return array($width, $height);
}
$newwidth = (abs(sin(deg2rad($angle))) * $height) + (abs(cos(deg2rad($angle))) * $width);
$newheight = (abs(sin(deg2rad($angle))) * $width) + (abs(cos(deg2rad($angle))) * $height);
return array($newwidth, $newheight);
}
static function HexCharDisplay($string) {
$len = strlen($string);
$output = '';
for ($i = 0; $i < $len; $i++) {
$output .= ' 0x'.str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT);
}
return $output;
}
static function IsHexColor($HexColorString) {
return preg_match('#^[0-9A-F]{6}$#i', $HexColorString);
}
static function ImageColorAllocateAlphaSafe(&$gdimg_hexcolorallocate, $R, $G, $B, $alpha=false) {
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=') && ($alpha !== false)) {
return ImageColorAllocateAlpha($gdimg_hexcolorallocate, $R, $G, $B, intval($alpha));
} else {
return ImageColorAllocate($gdimg_hexcolorallocate, $R, $G, $B);
}
}
static function ImageHexColorAllocate(&$gdimg_hexcolorallocate, $HexColorString, $dieOnInvalid=false, $alpha=false) {
if (!is_resource($gdimg_hexcolorallocate)) {
die('$gdimg_hexcolorallocate is not a GD resource in ImageHexColorAllocate()');
}
if (phpthumb_functions::IsHexColor($HexColorString)) {
$R = hexdec(substr($HexColorString, 0, 2));
$G = hexdec(substr($HexColorString, 2, 2));
$B = hexdec(substr($HexColorString, 4, 2));
return phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg_hexcolorallocate, $R, $G, $B, $alpha);
}
if ($dieOnInvalid) {
die('Invalid hex color string: "'.$HexColorString.'"');
}
return ImageColorAllocate($gdimg_hexcolorallocate, 0x00, 0x00, 0x00);
}
static function HexColorXOR($hexcolor) {
return strtoupper(str_pad(dechex(~hexdec($hexcolor) & 0xFFFFFF), 6, '0', STR_PAD_LEFT));
}
static function GetPixelColor(&$img, $x, $y) {
if (!is_resource($img)) {
return false;
}
return @ImageColorsForIndex($img, @ImageColorAt($img, $x, $y));
}
static function PixelColorDifferencePercent($currentPixel, $targetPixel) {
$diff = 0;
foreach ($targetPixel as $channel => $currentvalue) {
$diff = max($diff, (max($currentPixel[$channel], $targetPixel[$channel]) - min($currentPixel[$channel], $targetPixel[$channel])) / 255);
}
return $diff * 100;
}
static function GrayscaleValue($r, $g, $b) {
return round(($r * 0.30) + ($g * 0.59) + ($b * 0.11));
}
static function GrayscalePixel($OriginalPixel) {
$gray = phpthumb_functions::GrayscaleValue($OriginalPixel['red'], $OriginalPixel['green'], $OriginalPixel['blue']);
return array('red'=>$gray, 'green'=>$gray, 'blue'=>$gray);
}
static function GrayscalePixelRGB($rgb) {
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> 8) & 0xFF;
$b = $rgb & 0xFF;
return ($r * 0.299) + ($g * 0.587) + ($b * 0.114);
}
static function ScaleToFitInBox($width, $height, $maxwidth=null, $maxheight=null, $allow_enlarge=true, $allow_reduce=true) {
$maxwidth = (is_null($maxwidth) ? $width : $maxwidth);
$maxheight = (is_null($maxheight) ? $height : $maxheight);
$scale_x = 1;
$scale_y = 1;
if (($width > $maxwidth) || ($width < $maxwidth)) {
$scale_x = ($maxwidth / $width);
}
if (($height > $maxheight) || ($height < $maxheight)) {
$scale_y = ($maxheight / $height);
}
$scale = min($scale_x, $scale_y);
if (!$allow_enlarge) {
$scale = min($scale, 1);
}
if (!$allow_reduce) {
$scale = max($scale, 1);
}
return $scale;
}
static function ImageCopyResampleBicubic($dst_img, $src_img, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h) {
// ron at korving dot demon dot nl
// http://www.php.net/imagecopyresampled
$scaleX = ($src_w - 1) / $dst_w;
$scaleY = ($src_h - 1) / $dst_h;
$scaleX2 = $scaleX / 2.0;
$scaleY2 = $scaleY / 2.0;
$isTrueColor = ImageIsTrueColor($src_img);
for ($y = $src_y; $y < $src_y + $dst_h; $y++) {
$sY = $y * $scaleY;
$siY = (int) $sY;
$siY2 = (int) $sY + $scaleY2;
for ($x = $src_x; $x < $src_x + $dst_w; $x++) {
$sX = $x * $scaleX;
$siX = (int) $sX;
$siX2 = (int) $sX + $scaleX2;
if ($isTrueColor) {
$c1 = ImageColorAt($src_img, $siX, $siY2);
$c2 = ImageColorAt($src_img, $siX, $siY);
$c3 = ImageColorAt($src_img, $siX2, $siY2);
$c4 = ImageColorAt($src_img, $siX2, $siY);
$r = (( $c1 + $c2 + $c3 + $c4 ) >> 2) & 0xFF0000;
$g = ((($c1 & 0x00FF00) + ($c2 & 0x00FF00) + ($c3 & 0x00FF00) + ($c4 & 0x00FF00)) >> 2) & 0x00FF00;
$b = ((($c1 & 0x0000FF) + ($c2 & 0x0000FF) + ($c3 & 0x0000FF) + ($c4 & 0x0000FF)) >> 2);
} else {
$c1 = ImageColorsForIndex($src_img, ImageColorAt($src_img, $siX, $siY2));
$c2 = ImageColorsForIndex($src_img, ImageColorAt($src_img, $siX, $siY));
$c3 = ImageColorsForIndex($src_img, ImageColorAt($src_img, $siX2, $siY2));
$c4 = ImageColorsForIndex($src_img, ImageColorAt($src_img, $siX2, $siY));
$r = ($c1['red'] + $c2['red'] + $c3['red'] + $c4['red'] ) << 14;
$g = ($c1['green'] + $c2['green'] + $c3['green'] + $c4['green']) << 6;
$b = ($c1['blue'] + $c2['blue'] + $c3['blue'] + $c4['blue'] ) >> 2;
}
ImageSetPixel($dst_img, $dst_x + $x - $src_x, $dst_y + $y - $src_y, $r+$g+$b);
}
}
return true;
}
static function ImageCreateFunction($x_size, $y_size) {
$ImageCreateFunction = 'ImageCreate';
if (phpthumb_functions::gd_version() >= 2.0) {
$ImageCreateFunction = 'ImageCreateTrueColor';
}
if (!function_exists($ImageCreateFunction)) {
return phpthumb::ErrorImage($ImageCreateFunction.'() does not exist - no GD support?');
}
if (($x_size <= 0) || ($y_size <= 0)) {
return phpthumb::ErrorImage('Invalid image dimensions: '.$ImageCreateFunction.'('.$x_size.', '.$y_size.')');
}
return $ImageCreateFunction(round($x_size), round($y_size));
}
static function ImageCopyRespectAlpha(&$dst_im, &$src_im, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $opacity_pct=100) {
$opacipct = $opacity_pct / 100;
for ($x = $src_x; $x < $src_w; $x++) {
for ($y = $src_y; $y < $src_h; $y++) {
$RealPixel = phpthumb_functions::GetPixelColor($dst_im, $dst_x + $x, $dst_y + $y);
$OverlayPixel = phpthumb_functions::GetPixelColor($src_im, $x, $y);
$alphapct = $OverlayPixel['alpha'] / 127;
$overlaypct = (1 - $alphapct) * $opacipct;
$newcolor = phpthumb_functions::ImageColorAllocateAlphaSafe(
$dst_im,
round($RealPixel['red'] * (1 - $overlaypct)) + ($OverlayPixel['red'] * $overlaypct),
round($RealPixel['green'] * (1 - $overlaypct)) + ($OverlayPixel['green'] * $overlaypct),
round($RealPixel['blue'] * (1 - $overlaypct)) + ($OverlayPixel['blue'] * $overlaypct),
//$RealPixel['alpha']);
0);
ImageSetPixel($dst_im, $dst_x + $x, $dst_y + $y, $newcolor);
}
}
return true;
}
static function ProportionalResize($old_width, $old_height, $new_width=false, $new_height=false) {
$old_aspect_ratio = $old_width / $old_height;
if (($new_width === false) && ($new_height === false)) {
return false;
} elseif ($new_width === false) {
$new_width = $new_height * $old_aspect_ratio;
} elseif ($new_height === false) {
$new_height = $new_width / $old_aspect_ratio;
}
$new_aspect_ratio = $new_width / $new_height;
if ($new_aspect_ratio == $old_aspect_ratio) {
// great, done
} elseif ($new_aspect_ratio < $old_aspect_ratio) {
// limited by width
$new_height = $new_width / $old_aspect_ratio;
} elseif ($new_aspect_ratio > $old_aspect_ratio) {
// limited by height
$new_width = $new_height * $old_aspect_ratio;
}
return array(intval(round($new_width)), intval(round($new_height)));
}
static function FunctionIsDisabled($function) {
static $DisabledFunctions = null;
if (is_null($DisabledFunctions)) {
$disable_functions_local = explode(',', strtolower(@ini_get('disable_functions')));
$disable_functions_global = explode(',', strtolower(@get_cfg_var('disable_functions')));
foreach ($disable_functions_local as $key => $value) {
$DisabledFunctions[trim($value)] = 'local';
}
foreach ($disable_functions_global as $key => $value) {
$DisabledFunctions[trim($value)] = 'global';
}
if (@ini_get('safe_mode')) {
$DisabledFunctions['shell_exec'] = 'local';
$DisabledFunctions['set_time_limit'] = 'local';
}
}
return isset($DisabledFunctions[strtolower($function)]);
}
static function SafeExec($command) {
static $AllowedExecFunctions = array();
if (empty($AllowedExecFunctions)) {
$AllowedExecFunctions = array('shell_exec'=>true, 'passthru'=>true, 'system'=>true, 'exec'=>true);
foreach ($AllowedExecFunctions as $key => $value) {
$AllowedExecFunctions[$key] = !phpthumb_functions::FunctionIsDisabled($key);
}
}
$command .= ' 2>&1'; // force redirect stderr to stdout
foreach ($AllowedExecFunctions as $execfunction => $is_allowed) {
if (!$is_allowed) {
continue;
}
$returnvalue = false;
switch ($execfunction) {
case 'passthru':
case 'system':
ob_start();
$execfunction($command);
$returnvalue = ob_get_contents();
ob_end_clean();
break;
case 'exec':
$output = array();
$lastline = $execfunction($command, $output);
$returnvalue = implode("\n", $output);
break;
case 'shell_exec':
ob_start();
$returnvalue = $execfunction($command);
ob_end_clean();
break;
}
return $returnvalue;
}
return false;
}
static function ApacheLookupURIarray($filename) {
// apache_lookup_uri() only works when PHP is installed as an Apache module.
if (php_sapi_name() == 'apache') {
//$property_exists_exists = function_exists('property_exists');
$keys = array('status', 'the_request', 'status_line', 'method', 'content_type', 'handler', 'uri', 'filename', 'path_info', 'args', 'boundary', 'no_cache', 'no_local_copy', 'allowed', 'send_bodyct', 'bytes_sent', 'byterange', 'clength', 'unparsed_uri', 'mtime', 'request_time');
if ($apacheLookupURIobject = @apache_lookup_uri($filename)) {
$apacheLookupURIarray = array();
foreach ($keys as $key) {
$apacheLookupURIarray[$key] = @$apacheLookupURIobject->$key;
}
return $apacheLookupURIarray;
}
}
return false;
}
static function gd_is_bundled() {
static $isbundled = null;
if (is_null($isbundled)) {
$gd_info = gd_info();
$isbundled = (strpos($gd_info['GD Version'], 'bundled') !== false);
}
return $isbundled;
}
static function gd_version($fullstring=false) {
static $cache_gd_version = array();
if (empty($cache_gd_version)) {
$gd_info = gd_info();
if (preg_match('#bundled \((.+)\)$#i', $gd_info['GD Version'], $matches)) {
$cache_gd_version[1] = $gd_info['GD Version']; // e.g. "bundled (2.0.15 compatible)"
$cache_gd_version[0] = (float) $matches[1]; // e.g. "2.0" (not "bundled (2.0.15 compatible)")
} else {
$cache_gd_version[1] = $gd_info['GD Version']; // e.g. "1.6.2 or higher"
$cache_gd_version[0] = (float) substr($gd_info['GD Version'], 0, 3); // e.g. "1.6" (not "1.6.2 or higher")
}
}
return $cache_gd_version[intval($fullstring)];
}
static function filesize_remote($remotefile, $timeout=10) {
$size = false;
$url = phpthumb_functions::ParseURLbetter($remotefile);
if ($fp = @fsockopen($url['host'], ($url['port'] ? $url['port'] : 80), $errno, $errstr, $timeout)) {
fwrite($fp, 'HEAD '.@$url['path'].@$url['query'].' HTTP/1.0'."\r\n".'Host: '.@$url['host']."\r\n\r\n");
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.0', '>=')) {
stream_set_timeout($fp, $timeout);
}
while (!feof($fp)) {
$headerline = fgets($fp, 4096);
if (preg_match('#^Content-Length: (.*)#i', $headerline, $matches)) {
$size = intval($matches[1]);
break;
}
}
fclose ($fp);
}
return $size;
}
static function filedate_remote($remotefile, $timeout=10) {
$date = false;
$url = phpthumb_functions::ParseURLbetter($remotefile);
if ($fp = @fsockopen($url['host'], ($url['port'] ? $url['port'] : 80), $errno, $errstr, $timeout)) {
fwrite($fp, 'HEAD '.@$url['path'].@$url['query'].' HTTP/1.0'."\r\n".'Host: '.@$url['host']."\r\n\r\n");
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.0', '>=')) {
stream_set_timeout($fp, $timeout);
}
while (!feof($fp)) {
$headerline = fgets($fp, 4096);
if (preg_match('#^Last-Modified: (.*)#i', $headerline, $matches)) {
$date = strtotime($matches[1]) - date('Z');
break;
}
}
fclose ($fp);
}
return $date;
}
static function md5_file_safe($filename) {
// md5_file() doesn't exist in PHP < 4.2.0
if (function_exists('md5_file')) {
return md5_file($filename);
}
if ($fp = @fopen($filename, 'rb')) {
$rawData = '';
do {
$buffer = fread($fp, 8192);
$rawData .= $buffer;
} while (strlen($buffer) > 0);
fclose($fp);
return md5($rawData);
}
return false;
}
static function nonempty_min() {
$arg_list = func_get_args();
$acceptable = array();
foreach ($arg_list as $arg) {
if ($arg) {
$acceptable[] = $arg;
}
}
return min($acceptable);
}
static function LittleEndian2String($number, $minbytes=1) {
$intstring = '';
while ($number > 0) {
$intstring = $intstring.chr($number & 255);
$number >>= 8;
}
return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
}
static function OneOfThese() {
// return the first useful (non-empty/non-zero/non-false) value from those passed
$arg_list = func_get_args();
foreach ($arg_list as $key => $value) {
if ($value) {
return $value;
}
}
return false;
}
static function CaseInsensitiveInArray($needle, $haystack) {
$needle = strtolower($needle);
foreach ($haystack as $key => $value) {
if (is_array($value)) {
// skip?
} elseif ($needle == strtolower($value)) {
return true;
}
}
return false;
}
static function URLreadFsock($host, $file, &$errstr, $successonly=true, $port=80, $timeout=10) {
if (!function_exists('fsockopen') || phpthumb_functions::FunctionIsDisabled('fsockopen')) {
$errstr = 'fsockopen() unavailable';
return false;
}
if ($fp = @fsockopen($host, $port, $errno, $errstr, $timeout)) {
$out = 'GET '.$file.' HTTP/1.0'."\r\n";
$out .= 'Host: '.$host."\r\n";
$out .= 'Connection: Close'."\r\n\r\n";
fwrite($fp, $out);
$isHeader = true;
$Data_header = '';
$Data_body = '';
$header_newlocation = '';
while (!feof($fp)) {
$line = fgets($fp, 1024);
if ($isHeader) {
$Data_header .= $line;
} else {
$Data_body .= $line;
}
if (preg_match('#^HTTP/[\\.0-9]+ ([0-9]+) (.+)$#i', rtrim($line), $matches)) {
list($dummy, $errno, $errstr) = $matches;
$errno = intval($errno);
} elseif (preg_match('#^Location: (.*)$#i', rtrim($line), $matches)) {
$header_newlocation = $matches[1];
}
if ($isHeader && ($line == "\r\n")) {
$isHeader = false;
if ($successonly) {
switch ($errno) {
case 200:
// great, continue
break;
default:
$errstr = $errno.' '.$errstr.($header_newlocation ? '; Location: '.$header_newlocation : '');
fclose($fp);
return false;
break;
}
}
}
}
fclose($fp);
return $Data_body;
}
return null;
}
static function CleanUpURLencoding($url, $queryseperator='&') {
if (!preg_match('#^http#i', $url)) {
return $url;
}
$parse_url = phpthumb_functions::ParseURLbetter($url);
$pathelements = explode('/', $parse_url['path']);
$CleanPathElements = array();
$TranslationMatrix = array(' '=>'%20');
foreach ($pathelements as $key => $pathelement) {
$CleanPathElements[] = strtr($pathelement, $TranslationMatrix);
}
foreach ($CleanPathElements as $key => $value) {
if ($value === '') {
unset($CleanPathElements[$key]);
}
}
$queries = explode($queryseperator, (isset($parse_url['query']) ? $parse_url['query'] : ''));
$CleanQueries = array();
foreach ($queries as $key => $query) {
@list($param, $value) = explode('=', $query);
$CleanQueries[] = strtr($param, $TranslationMatrix).($value ? '='.strtr($value, $TranslationMatrix) : '');
}
foreach ($CleanQueries as $key => $value) {
if ($value === '') {
unset($CleanQueries[$key]);
}
}
$cleaned_url = $parse_url['scheme'].'://';
$cleaned_url .= (@$parse_url['username'] ? $parse_url['host'].(@$parse_url['password'] ? ':'.$parse_url['password'] : '').'@' : '');
$cleaned_url .= $parse_url['host'];
$cleaned_url .= ((!empty($parse_url['port']) && ($parse_url['port'] != 80)) ? ':'.$parse_url['port'] : '');
$cleaned_url .= '/'.implode('/', $CleanPathElements);
$cleaned_url .= (@$CleanQueries ? '?'.implode($queryseperator, $CleanQueries) : '');
return $cleaned_url;
}
static function ParseURLbetter($url) {
$parsedURL = @parse_url($url);
if (!@$parsedURL['port']) {
switch (strtolower(@$parsedURL['scheme'])) {
case 'ftp':
$parsedURL['port'] = 21;
break;
case 'https':
$parsedURL['port'] = 443;
break;
case 'http':
$parsedURL['port'] = 80;
break;
}
}
return $parsedURL;
}
static function SafeURLread($url, &$error, $timeout=10, $followredirects=true) {
$error = '';
$parsed_url = phpthumb_functions::ParseURLbetter($url);
$alreadyLookedAtURLs[trim($url)] = true;
while (true) {
$tryagain = false;
$rawData = phpthumb_functions::URLreadFsock(@$parsed_url['host'], @$parsed_url['path'].'?'.@$parsed_url['query'], $errstr, true, (@$parsed_url['port'] ? @$parsed_url['port'] : 80), $timeout);
if (preg_match('#302 [a-z ]+; Location\\: (http.*)#i', $errstr, $matches)) {
$matches[1] = trim(@$matches[1]);
if (!@$alreadyLookedAtURLs[$matches[1]]) {
// loop through and examine new URL
$error .= 'URL "'.$url.'" redirected to "'.$matches[1].'"';
$tryagain = true;
$alreadyLookedAtURLs[$matches[1]] = true;
$parsed_url = phpthumb_functions::ParseURLbetter($matches[1]);
}
}
if (!$tryagain) {
break;
}
}
if ($rawData === false) {
$error .= 'Error opening "'.$url.'":'."\n\n".$errstr;
return false;
} elseif ($rawData === null) {
// fall through
$error .= 'Error opening "'.$url.'":'."\n\n".$errstr;
} else {
return $rawData;
}
if (function_exists('curl_version') && !phpthumb_functions::FunctionIsDisabled('curl_exec')) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
$rawData = curl_exec($ch);
curl_close($ch);
if (strlen($rawData) > 0) {
$error .= 'CURL succeeded ('.strlen($rawData).' bytes); ';
return $rawData;
}
$error .= 'CURL available but returned no data; ';
} else {
$error .= 'CURL unavailable; ';
}
$BrokenURLfopenPHPversions = array('4.4.2');
if (in_array(phpversion(), $BrokenURLfopenPHPversions)) {
$error .= 'fopen(URL) broken in PHP v'.phpversion().'; ';
} elseif (@ini_get('allow_url_fopen')) {
$rawData = '';
$error_fopen = '';
ob_start();
if ($fp = fopen($url, 'rb')) {
do {
$buffer = fread($fp, 8192);
$rawData .= $buffer;
} while (strlen($buffer) > 0);
fclose($fp);
} else {
$error_fopen .= trim(strip_tags(ob_get_contents()));
}
ob_end_clean();
$error .= $error_fopen;
if (!$error_fopen) {
$error .= '; "allow_url_fopen" succeeded ('.strlen($rawData).' bytes); ';
return $rawData;
}
$error .= '; "allow_url_fopen" enabled but returned no data ('.$error_fopen.'); ';
} else {
$error .= '"allow_url_fopen" disabled; ';
}
return false;
}
static function EnsureDirectoryExists($dirname) {
$directory_elements = explode(DIRECTORY_SEPARATOR, $dirname);
$startoffset = (!$directory_elements[0] ? 2 : 1); // unix with leading "/" then start with 2nd element; Windows with leading "c:\" then start with 1st element
$open_basedirs = preg_split('#[;:]#', ini_get('open_basedir'));
foreach ($open_basedirs as $key => $open_basedir) {
if (preg_match('#^'.preg_quote($open_basedir).'#', $dirname) && (strlen($dirname) > strlen($open_basedir))) {
$startoffset = count(explode(DIRECTORY_SEPARATOR, $open_basedir));
break;
}
}
$i = $startoffset;
$endoffset = count($directory_elements);
for ($i = $startoffset; $i <= $endoffset; $i++) {
$test_directory = implode(DIRECTORY_SEPARATOR, array_slice($directory_elements, 0, $i));
if (!$test_directory) {
continue;
}
if (!@is_dir($test_directory)) {
if (@file_exists($test_directory)) {
// directory name already exists as a file
return false;
}
@mkdir($test_directory, 0755);
@chmod($test_directory, 0755);
if (!@is_dir($test_directory) || !@is_writeable($test_directory)) {
return false;
}
}
}
return true;
}
static function GetAllFilesInSubfolders($dirname) {
$AllFiles = array();
$dirname = rtrim(realpath($dirname), '/\\');
if ($dirhandle = @opendir($dirname)) {
while (($file = readdir($dirhandle)) !== false) {
$fullfilename = $dirname.DIRECTORY_SEPARATOR.$file;
if (is_file($fullfilename)) {
$AllFiles[] = $fullfilename;
} elseif (is_dir($fullfilename)) {
switch ($file) {
case '.':
case '..':
break;
default:
$AllFiles[] = $fullfilename;
$subfiles = phpthumb_functions::GetAllFilesInSubfolders($fullfilename);
foreach ($subfiles as $filename) {
$AllFiles[] = $filename;
}
break;
}
} else {
// ignore?
}
}
closedir($dirhandle);
}
sort($AllFiles);
return array_unique($AllFiles);
}
static function SanitizeFilename($filename) {
$filename = preg_replace('/[^'.preg_quote(' !#$%^()+,-.;<>=@[]_{}').'a-zA-Z0-9]/', '_', $filename);
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.1.0', '>=')) {
$filename = trim($filename, '.');
}
return $filename;
}
}
////////////// END: class phpthumb_functions //////////////
if (!function_exists('gd_info')) {
// built into PHP v4.3.0+ (with bundled GD2 library)
function gd_info() {
static $gd_info = array();
if (empty($gd_info)) {
// based on code by johnschaefer at gmx dot de
// from PHP help on gd_info()
$gd_info = array(
'GD Version' => '',
'FreeType Support' => false,
'FreeType Linkage' => '',
'T1Lib Support' => false,
'GIF Read Support' => false,
'GIF Create Support' => false,
'JPG Support' => false,
'PNG Support' => false,
'WBMP Support' => false,
'XBM Support' => false
);
$phpinfo_array = phpthumb_functions::phpinfo_array();
foreach ($phpinfo_array as $line) {
$line = trim(strip_tags($line));
foreach ($gd_info as $key => $value) {
//if (strpos($line, $key) !== false) {
if (strpos($line, $key) === 0) {
$newvalue = trim(str_replace($key, '', $line));
$gd_info[$key] = $newvalue;
}
}
}
if (empty($gd_info['GD Version'])) {
// probable cause: "phpinfo() disabled for security reasons"
if (function_exists('ImageTypes')) {
$imagetypes = ImageTypes();
if ($imagetypes & IMG_PNG) {
$gd_info['PNG Support'] = true;
}
if ($imagetypes & IMG_GIF) {
$gd_info['GIF Create Support'] = true;
}
if ($imagetypes & IMG_JPG) {
$gd_info['JPG Support'] = true;
}
if ($imagetypes & IMG_WBMP) {
$gd_info['WBMP Support'] = true;
}
}
// to determine capability of GIF creation, try to use ImageCreateFromGIF on a 1px GIF
if (function_exists('ImageCreateFromGIF')) {
if ($tempfilename = phpthumb::phpThumb_tempnam()) {
if ($fp_tempfile = @fopen($tempfilename, 'wb')) {
fwrite($fp_tempfile, base64_decode('R0lGODlhAQABAIAAAH//AP///ywAAAAAAQABAAACAUQAOw==')); // very simple 1px GIF file base64-encoded as string
fclose($fp_tempfile);
// if we can convert the GIF file to a GD image then GIF create support must be enabled, otherwise it's not
$gd_info['GIF Read Support'] = (bool) @ImageCreateFromGIF($tempfilename);
}
unlink($tempfilename);
}
}
if (function_exists('ImageCreateTrueColor') && @ImageCreateTrueColor(1, 1)) {
$gd_info['GD Version'] = '2.0.1 or higher (assumed)';
} elseif (function_exists('ImageCreate') && @ImageCreate(1, 1)) {
$gd_info['GD Version'] = '1.6.0 or higher (assumed)';
}
}
}
return $gd_info;
}
}
if (!function_exists('is_executable')) {
// in PHP v3+, but v5.0+ for Windows
function is_executable($filename) {
// poor substitute, but better than nothing
return file_exists($filename);
}
}
if (!function_exists('preg_quote')) {
// included in PHP v3.0.9+, but may be unavailable if not compiled in
function preg_quote($string, $delimiter='\\') {
static $preg_quote_array = array();
if (empty($preg_quote_array)) {
$escapeables = '.\\+*?[^]$(){}=!<>|:';
for ($i = 0; $i < strlen($escapeables); $i++) {
$strtr_preg_quote[$escapeables{$i}] = $delimiter.$escapeables{$i};
}
}
return strtr($string, $strtr_preg_quote);
}
}
if (!function_exists('file_get_contents')) {
// included in PHP v4.3.0+
function file_get_contents($filename) {
if (preg_match('#^(f|ht)tp\://#i', $filename)) {
return SafeURLread($filename, $error);