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[p5sagit/p5-mst-13.2.git] / ext / IO_Compress_Zlib / t / 004gziphdr.t
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25f0751f 1BEGIN {
2 if ($ENV{PERL_CORE}) {
3 chdir 't' if -d 't';
4 @INC = ("../lib", "lib/compress");
5 }
6}
7
8use lib qw(t t/compress);
9use strict;
10use warnings;
11use bytes;
12
13use Test::More ;
14use CompTestUtils;
15
16BEGIN {
17 # use Test::NoWarnings, if available
18 my $extra = 0 ;
19 $extra = 1
20 if eval { require Test::NoWarnings ; import Test::NoWarnings; 1 };
21
22
23 plan tests => 910 + $extra ;
24
25 use_ok('Compress::Raw::Zlib') ;
26 use_ok('IO::Compress::Gzip::Constants') ;
27
28 use_ok('IO::Compress::Gzip', qw($GzipError)) ;
29 use_ok('IO::Uncompress::Gunzip', qw($GunzipError)) ;
30
31}
32
33
34
35# Check the Gzip Header Parameters
36#========================================
37
38my $ThisOS_code = $Compress::Raw::Zlib::gzip_os_code;
39
40my $lex = new LexFile my $name ;
41
42{
43 title "Check Defaults";
44 # Check Name defaults undef, no name, no comment
45 # and Time can be explicitly set.
46
47 my $hdr = readHeaderInfo($name, -Time => 1234);
48
49 is $hdr->{Time}, 1234;
50 ok ! defined $hdr->{Name};
51 is $hdr->{MethodName}, 'Deflated';
52 is $hdr->{ExtraFlags}, 0;
53 is $hdr->{MethodID}, Z_DEFLATED;
54 is $hdr->{OsID}, $ThisOS_code ;
55 ok ! defined $hdr->{Comment} ;
56 ok ! defined $hdr->{ExtraFieldRaw} ;
57 ok ! defined $hdr->{HeaderCRC} ;
58 ok ! $hdr->{isMinimalHeader} ;
59}
60
61{
62
63 title "Check name can be different from filename" ;
64 # Check Name can be different from filename
65 # Comment and Extra can be set
66 # Can specify a zero Time
67
68 my $comment = "This is a Comment" ;
69 my $extra = "A little something extra" ;
70 my $aname = "a new name" ;
71 my $hdr = readHeaderInfo $name,
72 -Strict => 0,
73 -Name => $aname,
74 -Comment => $comment,
75 -ExtraField => $extra,
76 -Time => 0 ;
77
78 ok $hdr->{Time} == 0;
79 ok $hdr->{Name} eq $aname;
80 ok $hdr->{MethodName} eq 'Deflated';
81 ok $hdr->{MethodID} == 8;
82 is $hdr->{ExtraFlags}, 0;
83 ok $hdr->{Comment} eq $comment ;
84 is $hdr->{OsID}, $ThisOS_code ;
85 ok ! $hdr->{isMinimalHeader} ;
86 ok ! defined $hdr->{HeaderCRC} ;
87}
88
89{
90 title "Check Time defaults to now" ;
91
92 # Check Time defaults to now
93 # and that can have empty name, comment and extrafield
94 my $before = time ;
95 my $hdr = readHeaderInfo $name,
96 -TextFlag => 1,
97 -Name => "",
98 -Comment => "",
99 -ExtraField => "";
100 my $after = time ;
101
102 ok $hdr->{Time} >= $before ;
103 ok $hdr->{Time} <= $after ;
104
105 ok defined $hdr->{Name} ;
106 ok $hdr->{Name} eq "";
107 ok defined $hdr->{Comment} ;
108 ok $hdr->{Comment} eq "";
109 ok defined $hdr->{ExtraFieldRaw} ;
110 ok $hdr->{ExtraFieldRaw} eq "";
111 is $hdr->{ExtraFlags}, 0;
112
113 ok ! $hdr->{isMinimalHeader} ;
114 ok $hdr->{TextFlag} ;
115 ok ! defined $hdr->{HeaderCRC} ;
116 is $hdr->{OsID}, $ThisOS_code ;
117
118}
119
120{
121 title "can have null extrafield" ;
122
123 my $before = time ;
124 my $hdr = readHeaderInfo $name,
125 -strict => 0,
126 -Name => "a",
127 -Comment => "b",
128 -ExtraField => "\x00";
129 my $after = time ;
130
131 ok $hdr->{Time} >= $before ;
132 ok $hdr->{Time} <= $after ;
133 ok $hdr->{Name} eq "a";
134 ok $hdr->{Comment} eq "b";
135 is $hdr->{ExtraFlags}, 0;
136 ok $hdr->{ExtraFieldRaw} eq "\x00";
137 ok ! $hdr->{isMinimalHeader} ;
138 ok ! $hdr->{TextFlag} ;
139 ok ! defined $hdr->{HeaderCRC} ;
140 is $hdr->{OsID}, $ThisOS_code ;
141
142}
143
144{
145 title "can have undef name, comment, time and extrafield" ;
146
147 my $hdr = readHeaderInfo $name,
148 -Name => undef,
149 -Comment => undef,
150 -ExtraField => undef,
151 -Time => undef;
152
153 ok $hdr->{Time} == 0;
154 ok ! defined $hdr->{Name} ;
155 ok ! defined $hdr->{Comment} ;
156 ok ! defined $hdr->{ExtraFieldRaw} ;
157 ok ! $hdr->{isMinimalHeader} ;
158 ok ! $hdr->{TextFlag} ;
159 ok ! defined $hdr->{HeaderCRC} ;
160 is $hdr->{OsID}, $ThisOS_code ;
161
162}
163
164for my $value ( "0D", "0A", "0A0D", "0D0A", "0A0A", "0D0D")
165{
166 title "Comment with $value" ;
167
3006a4e1 168 my $v = pack "h*", $value;
25f0751f 169 my $comment = "my${v}comment$v";
170 my $hdr = readHeaderInfo $name,
171 Time => 0,
172 -TextFlag => 1,
173 -Name => "",
174 -Comment => $comment,
175 -ExtraField => "";
176 my $after = time ;
177
178 is $hdr->{Time}, 0 ;
179
180 ok defined $hdr->{Name} ;
181 ok $hdr->{Name} eq "";
182 ok defined $hdr->{Comment} ;
183 is $hdr->{Comment}, $comment;
184 ok defined $hdr->{ExtraFieldRaw} ;
185 ok $hdr->{ExtraFieldRaw} eq "";
186 is $hdr->{ExtraFlags}, 0;
187
188 ok ! $hdr->{isMinimalHeader} ;
189 ok $hdr->{TextFlag} ;
190 ok ! defined $hdr->{HeaderCRC} ;
191 is $hdr->{OsID}, $ThisOS_code ;
192
193}
194
195{
196 title "Check crchdr" ;
197
198 my $hdr = readHeaderInfo $name, -HeaderCRC => 1;
199
200 ok ! defined $hdr->{Name};
201 is $hdr->{ExtraFlags}, 0;
202 ok ! defined $hdr->{ExtraFieldRaw} ;
203 ok ! defined $hdr->{Comment} ;
204 ok ! $hdr->{isMinimalHeader} ;
205 ok ! $hdr->{TextFlag} ;
206 ok defined $hdr->{HeaderCRC} ;
207 is $hdr->{OsID}, $ThisOS_code ;
208}
209
210{
211 title "Check ExtraFlags" ;
212
213 my $hdr = readHeaderInfo $name, -Level => Z_BEST_SPEED;
214
215 ok ! defined $hdr->{Name};
216 is $hdr->{ExtraFlags}, 2;
217 ok ! defined $hdr->{ExtraFieldRaw} ;
218 ok ! defined $hdr->{Comment} ;
219 ok ! $hdr->{isMinimalHeader} ;
220 ok ! $hdr->{TextFlag} ;
221 ok ! defined $hdr->{HeaderCRC} ;
222
223 $hdr = readHeaderInfo $name, -Level => Z_BEST_COMPRESSION;
224
225 ok ! defined $hdr->{Name};
226 is $hdr->{ExtraFlags}, 4;
227 ok ! defined $hdr->{ExtraFieldRaw} ;
228 ok ! defined $hdr->{Comment} ;
229 ok ! $hdr->{isMinimalHeader} ;
230 ok ! $hdr->{TextFlag} ;
231 ok ! defined $hdr->{HeaderCRC} ;
232
233 $hdr = readHeaderInfo $name, -Level => Z_BEST_COMPRESSION,
234 -ExtraFlags => 42;
235
236 ok ! defined $hdr->{Name};
237 is $hdr->{ExtraFlags}, 42;
238 ok ! defined $hdr->{ExtraFieldRaw} ;
239 ok ! defined $hdr->{Comment} ;
240 ok ! $hdr->{isMinimalHeader} ;
241 ok ! $hdr->{TextFlag} ;
242 ok ! defined $hdr->{HeaderCRC} ;
243
244
245}
246
247{
248 title "OS Code" ;
249
250 for my $code ( -1, undef, '', 'fred' )
251 {
252 my $code_name = defined $code ? "'$code'" : "'undef'";
253 eval { new IO::Compress::Gzip $name, -OS_Code => $code } ;
254 like $@, mkErr("^IO::Compress::Gzip: Parameter 'OS_Code' must be an unsigned int, got $code_name"),
255 " Trap OS Code $code_name";
256 }
257
258 for my $code ( qw( 256 ) )
259 {
260 eval { ok ! new IO::Compress::Gzip($name, OS_Code => $code) };
261 like $@, mkErr("OS_Code must be between 0 and 255, got '$code'"),
262 " Trap OS Code $code";
263 like $GzipError, "/OS_Code must be between 0 and 255, got '$code'/",
264 " Trap OS Code $code";
265 }
266
267 for my $code ( qw(0 1 12 254 255) )
268 {
269 my $hdr = readHeaderInfo $name, OS_Code => $code;
270
271 is $hdr->{OsID}, $code, " Code is $code" ;
272 }
273
274
275
276}
277
278{
279 title 'Check ExtraField';
280
281 my @tests = (
282 [1, ['AB' => ''] => [['AB'=>'']] ],
283 [1, {'AB' => ''} => [['AB'=>'']] ],
284 [1, ['AB' => 'Fred'] => [['AB'=>'Fred']] ],
285 [1, {'AB' => 'Fred'} => [['AB'=>'Fred']] ],
286 [1, ['Xx' => '','AB' => 'Fred'] => [['Xx' => ''],['AB'=>'Fred']] ],
287 [1, ['Xx' => '','Xx' => 'Fred'] => [['Xx' => ''],['Xx'=>'Fred']] ],
288 [1, ['Xx' => '',
289 'Xx' => 'Fred',
290 'Xx' => 'Fred'] => [['Xx' => ''],['Xx'=>'Fred'],
291 ['Xx'=>'Fred']] ],
292 [1, [ ['Xx' => 'a'],
293 ['AB' => 'Fred'] ] => [['Xx' => 'a'],['AB'=>'Fred']] ],
294 [0, {'AB' => 'Fred',
295 'Pq' => 'r',
296 "\x01\x02" => "\x03"} => [['AB'=>'Fred'],
297 ['Pq'=>'r'],
298 ["\x01\x02"=>"\x03"]] ],
299 [1, ['AB' => 'z' x GZIP_FEXTRA_SUBFIELD_MAX_SIZE] =>
300 [['AB'=>'z' x GZIP_FEXTRA_SUBFIELD_MAX_SIZE]] ],
301 );
302
303 foreach my $test (@tests) {
304 my ($order, $input, $result) = @$test ;
305 ok my $x = new IO::Compress::Gzip $name,
306 -ExtraField => $input,
307 -HeaderCRC => 1
308 or diag "GzipError is $GzipError" ; ;
309 my $string = "abcd" ;
310 ok $x->write($string) ;
311 ok $x->close ;
312 #is GZreadFile($name), $string ;
313
314 ok $x = new IO::Uncompress::Gunzip $name,
315 #-Strict => 1,
316 -ParseExtra => 1
317 or diag "GunzipError is $GunzipError" ; ;
318 my $hdr = $x->getHeaderInfo();
319 ok $hdr;
320 ok ! defined $hdr->{Name};
321 ok ! defined $hdr->{Comment} ;
322 ok ! $hdr->{isMinimalHeader} ;
323 ok ! $hdr->{TextFlag} ;
324 ok defined $hdr->{HeaderCRC} ;
325
326 ok defined $hdr->{ExtraFieldRaw} ;
327 ok defined $hdr->{ExtraField} ;
328
329 my $extra = $hdr->{ExtraField} ;
330
331 if ($order) {
332 eq_array $extra, $result;
333 } else {
334 eq_set $extra, $result;
335 }
336 }
337
338}
339
340{
341 title 'Write Invalid ExtraField';
342
343 my $prefix = 'Error with ExtraField Parameter: ';
344 my @tests = (
345 [ sub{ "abc" } => "Not a scalar, array ref or hash ref"],
346 [ [ "a" ] => "Not even number of elements"],
347 [ [ "a" => "fred" ] => 'SubField ID not two chars long'],
348 [ [ "a\x00" => "fred" ] => 'SubField ID 2nd byte is 0x00'],
349 [ [ [ {}, "abc" ]] => "SubField ID is a reference"],
350 [ [ [ "ab", \1 ]] => "SubField Data is a reference"],
351 [ [ {"a" => "fred"} ] => "Not list of lists"],
352 [ [ ['ab'=>'x'],{"a" => "fred"} ] => "Not list of lists"],
353 [ [ ["aa"] ] => "SubField must have two parts"],
354 [ [ ["aa", "b", "c"] ] => "SubField must have two parts"],
355 [ [ ["ab" => 'x' x (GZIP_FEXTRA_SUBFIELD_MAX_SIZE + 1) ] ]
356 => "SubField Data too long"],
357
358 [ { 'abc', 1 } => "SubField ID not two chars long"],
359 [ { \1 , "abc" } => "SubField ID not two chars long"],
360 [ { "ab", \1 } => "SubField Data is a reference"],
361 );
362
363
364
365 foreach my $test (@tests) {
366 my ($input, $string) = @$test ;
367 my $buffer ;
368 my $x ;
369 eval { $x = new IO::Compress::Gzip \$buffer, -ExtraField => $input; };
370 like $@, mkErr("$prefix$string");
371 like $GzipError, "/$prefix$string/";
372 ok ! $x ;
373
374 }
375
376}
377
378{
379 # Corrupt ExtraField
380
381 my @tests = (
382 ["Sub-field truncated",
c70c1701 383 "Error with ExtraField Parameter: Truncated in FEXTRA Body Section",
25f0751f 384 "Header Error: Truncated in FEXTRA Body Section",
385 ['a', undef, undef] ],
386 ["Length of field incorrect",
c70c1701 387 "Error with ExtraField Parameter: Truncated in FEXTRA Body Section",
25f0751f 388 "Header Error: Truncated in FEXTRA Body Section",
389 ["ab", 255, "abc"] ],
390 ["Length of 2nd field incorrect",
c70c1701 391 "Error with ExtraField Parameter: Truncated in FEXTRA Body Section",
25f0751f 392 "Header Error: Truncated in FEXTRA Body Section",
393 ["ab", 3, "abc"], ["de", 7, "x"] ],
394 ["Length of 2nd field incorrect",
395 "Error with ExtraField Parameter: SubField ID 2nd byte is 0x00",
c70c1701 396 "Header Error: SubField ID 2nd byte is 0x00",
25f0751f 397 ["a\x00", 3, "abc"], ["de", 7, "x"] ],
398 );
399
400 foreach my $test (@tests)
401 {
402 my $name = shift @$test;
403 my $gzip_error = shift @$test;
404 my $gunzip_error = shift @$test;
405
406 title "Read Corrupt ExtraField - $name" ;
407
408 my $input = '';
409
410 for my $field (@$test)
411 {
412 my ($id, $len, $data) = @$field;
413
414 $input .= $id if defined $id ;
415 $input .= pack("v", $len) if defined $len ;
416 $input .= $data if defined $data;
417 }
418 #hexDump(\$input);
419
420 my $buffer ;
421 my $x ;
422 eval {$x = new IO::Compress::Gzip \$buffer, -ExtraField => $input, Strict => 1; };
423 like $@, mkErr("$gzip_error"), " $name";
424 like $GzipError, "/$gzip_error/", " $name";
425
426 ok ! $x, " IO::Compress::Gzip fails";
427 like $GzipError, "/$gzip_error/", " $name";
428
429 foreach my $check (0, 1)
430 {
c70c1701 431 ok $x = new IO::Compress::Gzip \$buffer,
432 ExtraField => $input,
433 Strict => 0
434 or diag "GzipError is $GzipError" ;
25f0751f 435 my $string = "abcd" ;
436 $x->write($string) ;
437 $x->close ;
438 is anyUncompress(\$buffer), $string ;
439
c70c1701 440 $x = new IO::Uncompress::Gunzip \$buffer,
441 Strict => 0,
25f0751f 442 Transparent => 0,
c70c1701 443 ParseExtra => $check;
25f0751f 444 if ($check) {
445 ok ! $x ;
446 like $GunzipError, "/^$gunzip_error/";
447 }
448 else {
449 ok $x ;
450 }
451
452 }
453 }
454}
455
456
457{
458 title 'Check Minimal';
459
460 ok my $x = new IO::Compress::Gzip $name, -Minimal => 1;
461 my $string = "abcd" ;
462 ok $x->write($string) ;
463 ok $x->close ;
464 #is GZreadFile($name), $string ;
465
466 ok $x = new IO::Uncompress::Gunzip $name ;
467 my $hdr = $x->getHeaderInfo();
468 ok $hdr;
469 ok $hdr->{Time} == 0;
470 is $hdr->{ExtraFlags}, 0;
471 ok ! defined $hdr->{Name} ;
472 ok ! defined $hdr->{ExtraFieldRaw} ;
473 ok ! defined $hdr->{Comment} ;
474 is $hdr->{OsName}, 'Unknown' ;
475 is $hdr->{MethodName}, "Deflated";
476 is $hdr->{Flags}, 0;
477 ok $hdr->{isMinimalHeader} ;
478 ok ! $hdr->{TextFlag} ;
479 ok $x->close ;
480}
481
482{
483 # Check Minimal + no comressed data
484 # This is the smallest possible gzip file (20 bytes)
485
486 ok my $x = new IO::Compress::Gzip $name, -Minimal => 1;
487 ok $x->close ;
488 #ok GZreadFile($name) eq '' ;
489
490 ok $x = new IO::Uncompress::Gunzip $name, -Append => 1 ;
491 my $data ;
492 my $status = 1;
493
494 $status = $x->read($data)
495 while $status > 0;
496 is $status, 0 ;
497 is $data, '';
498 ok ! $x->error() ;
499 ok $x->eof() ;
500
501 my $hdr = $x->getHeaderInfo();
502 ok $hdr;
503
504 ok defined $hdr->{ISIZE} ;
505 is $hdr->{ISIZE}, 0;
506
507 ok defined $hdr->{CRC32} ;
508 is $hdr->{CRC32}, 0;
509
510 is $hdr->{Time}, 0;
511 ok ! defined $hdr->{Name} ;
512 ok ! defined $hdr->{ExtraFieldRaw} ;
513 ok ! defined $hdr->{Comment} ;
514 is $hdr->{OsName}, 'Unknown' ;
515 is $hdr->{MethodName}, "Deflated";
516 is $hdr->{Flags}, 0;
517 ok $hdr->{isMinimalHeader} ;
518 ok ! $hdr->{TextFlag} ;
519 ok $x->close ;
520}
521
522{
523 # Header Corruption Tests
524
525 my $string = <<EOM;
526some text
527EOM
528
529 my $good = '';
530 ok my $x = new IO::Compress::Gzip \$good, -HeaderCRC => 1 ;
531 ok $x->write($string) ;
532 ok $x->close ;
533
534 {
535 title "Header Corruption - Fingerprint wrong 1st byte" ;
536 my $buffer = $good ;
537 substr($buffer, 0, 1) = 'x' ;
538
539 ok ! new IO::Uncompress::Gunzip \$buffer, -Transparent => 0 ;
540 ok $GunzipError =~ /Header Error: Bad Magic/;
541 }
542
543 {
544 title "Header Corruption - Fingerprint wrong 2nd byte" ;
545 my $buffer = $good ;
546 substr($buffer, 1, 1) = "\xFF" ;
547
548 ok ! new IO::Uncompress::Gunzip \$buffer, -Transparent => 0 ;
549 ok $GunzipError =~ /Header Error: Bad Magic/;
550 #print "$GunzipError\n";
551 }
552
553 {
554 title "Header Corruption - CM not 8";
555 my $buffer = $good ;
556 substr($buffer, 2, 1) = 'x' ;
557
558 ok ! new IO::Uncompress::Gunzip \$buffer, -Transparent => 0 ;
559 like $GunzipError, '/Header Error: Not Deflate \(CM is \d+\)/';
560 }
561
562 {
563 title "Header Corruption - Use of Reserved Flags";
564 my $buffer = $good ;
565 substr($buffer, 3, 1) = "\xff";
566
567 ok ! new IO::Uncompress::Gunzip \$buffer, -Transparent => 0 ;
568 like $GunzipError, '/Header Error: Use of Reserved Bits in FLG field./';
569 }
570
571 {
572 title "Header Corruption - Fail HeaderCRC";
573 my $buffer = $good ;
574 substr($buffer, 10, 1) = chr((ord(substr($buffer, 10, 1)) + 1) & 0xFF);
575
576 ok ! new IO::Uncompress::Gunzip \$buffer, -Transparent => 0, Strict => 1
577 or print "# $GunzipError\n";
578 like $GunzipError, '/Header Error: CRC16 mismatch/'
579 #or diag "buffer length " . length($buffer);
580 or hexDump(\$good), hexDump(\$buffer);
581 }
582}
583
584{
585 title "ExtraField max raw size";
586 my $x ;
587 my $store = "x" x GZIP_FEXTRA_MAX_SIZE ;
588 my $z = new IO::Compress::Gzip(\$x, ExtraField => $store, Strict => 0) ;
589 ok $z, "Created IO::Compress::Gzip object" ;
590 my $gunz = new IO::Uncompress::Gunzip \$x, Strict => 0;
591 ok $gunz, "Created IO::Uncompress::Gunzip object" ;
592 my $hdr = $gunz->getHeaderInfo();
593 ok $hdr;
594
595 is $hdr->{ExtraFieldRaw}, $store ;
596}
597
598{
599 title "Header Corruption - ExtraField too big";
600 my $x;
601 eval { new IO::Compress::Gzip(\$x, -ExtraField => "x" x (GZIP_FEXTRA_MAX_SIZE + 1)) ;};
602 like $@, mkErr('Error with ExtraField Parameter: Too Large');
603 like $GzipError, '/Error with ExtraField Parameter: Too Large/';
604}
605
606{
607 title "Header Corruption - Create Name with Illegal Chars";
608
609 my $x;
610 eval { new IO::Compress::Gzip \$x, -Name => "fred\x02" };
611 like $@, mkErr('Non ISO 8859-1 Character found in Name');
612 like $GzipError, '/Non ISO 8859-1 Character found in Name/';
613
614 ok my $gz = new IO::Compress::Gzip \$x,
615 -Strict => 0,
616 -Name => "fred\x02" ;
617 ok $gz->close();
618
619 ok ! new IO::Uncompress::Gunzip \$x,
620 -Transparent => 0,
621 -Strict => 1;
622
623 like $GunzipError, '/Header Error: Non ISO 8859-1 Character found in Name/';
624 ok my $gunzip = new IO::Uncompress::Gunzip \$x,
625 -Strict => 0;
626
627 my $hdr = $gunzip->getHeaderInfo() ;
628
629 is $hdr->{Name}, "fred\x02";
630
631}
632
633{
634 title "Header Corruption - Null Chars in Name";
635 my $x;
636 eval { new IO::Compress::Gzip \$x, -Name => "\x00" };
637 like $@, mkErr('Null Character found in Name');
638 like $GzipError, '/Null Character found in Name/';
639
640 eval { new IO::Compress::Gzip \$x, -Name => "abc\x00" };
641 like $@, mkErr('Null Character found in Name');
642 like $GzipError, '/Null Character found in Name/';
643
644 ok my $gz = new IO::Compress::Gzip \$x,
645 -Strict => 0,
646 -Name => "abc\x00de" ;
647 ok $gz->close() ;
648 ok my $gunzip = new IO::Uncompress::Gunzip \$x,
649 -Strict => 0;
650
651 my $hdr = $gunzip->getHeaderInfo() ;
652
653 is $hdr->{Name}, "abc";
654
655}
656
657{
658 title "Header Corruption - Create Comment with Illegal Chars";
659
660 my $x;
661 eval { new IO::Compress::Gzip \$x, -Comment => "fred\x02" };
662 like $@, mkErr('Non ISO 8859-1 Character found in Comment');
663 like $GzipError, '/Non ISO 8859-1 Character found in Comment/';
664
665 ok my $gz = new IO::Compress::Gzip \$x,
666 -Strict => 0,
667 -Comment => "fred\x02" ;
668 ok $gz->close();
669
670 ok ! new IO::Uncompress::Gunzip \$x, Strict => 1,
671 -Transparent => 0;
672
673 like $GunzipError, '/Header Error: Non ISO 8859-1 Character found in Comment/';
674 ok my $gunzip = new IO::Uncompress::Gunzip \$x, Strict => 0;
675
676 my $hdr = $gunzip->getHeaderInfo() ;
677
678 is $hdr->{Comment}, "fred\x02";
679
680}
681
682{
683 title "Header Corruption - Null Char in Comment";
684 my $x;
685 eval { new IO::Compress::Gzip \$x, -Comment => "\x00" };
686 like $@, mkErr('Null Character found in Comment');
687 like $GzipError, '/Null Character found in Comment/';
688
689 eval { new IO::Compress::Gzip \$x, -Comment => "abc\x00" } ;
690 like $@, mkErr('Null Character found in Comment');
691 like $GzipError, '/Null Character found in Comment/';
692
693 ok my $gz = new IO::Compress::Gzip \$x,
694 -Strict => 0,
695 -Comment => "abc\x00de" ;
696 ok $gz->close() ;
697 ok my $gunzip = new IO::Uncompress::Gunzip \$x,
698 -Strict => 0;
699
700 my $hdr = $gunzip->getHeaderInfo() ;
701
702 is $hdr->{Comment}, "abc";
703
704}
705
706
707for my $index ( GZIP_MIN_HEADER_SIZE + 1 .. GZIP_MIN_HEADER_SIZE + GZIP_FEXTRA_HEADER_SIZE + 1)
708{
709 title "Header Corruption - Truncated in Extra";
710 my $string = <<EOM;
711some text
712EOM
713
714 my $truncated ;
715 ok my $x = new IO::Compress::Gzip \$truncated, -HeaderCRC => 1, Strict => 0,
716 -ExtraField => "hello" x 10 ;
717 ok $x->write($string) ;
718 ok $x->close ;
719
720 substr($truncated, $index) = '' ;
721 #my $lex = new LexFile my $name ;
722 #writeFile($name, $truncated) ;
723
724 #my $g = new IO::Uncompress::Gunzip $name, -Transparent => 0;
725 my $g = new IO::Uncompress::Gunzip \$truncated, -Transparent => 0;
726 ok ! $g
727 or print "# $g\n" ;
728
729 like($GunzipError, '/^Header Error: Truncated in FEXTRA/');
730
731
732}
733
734my $Name = "fred" ;
735 my $truncated ;
736for my $index ( GZIP_MIN_HEADER_SIZE .. GZIP_MIN_HEADER_SIZE + length($Name) -1)
737{
738 title "Header Corruption - Truncated in Name";
739 my $string = <<EOM;
740some text
741EOM
742
743 my $truncated ;
744 ok my $x = new IO::Compress::Gzip \$truncated, -Name => $Name;
745 ok $x->write($string) ;
746 ok $x->close ;
747
748 substr($truncated, $index) = '' ;
749
750 my $g = new IO::Uncompress::Gunzip \$truncated, -Transparent => 0;
751 ok ! $g
752 or print "# $g\n" ;
753
754 like $GunzipError, '/^Header Error: Truncated in FNAME Section/';
755
756}
757
758my $Comment = "comment" ;
759for my $index ( GZIP_MIN_HEADER_SIZE .. GZIP_MIN_HEADER_SIZE + length($Comment) -1)
760{
761 title "Header Corruption - Truncated in Comment";
762 my $string = <<EOM;
763some text
764EOM
765
766 my $truncated ;
767 ok my $x = new IO::Compress::Gzip \$truncated, -Comment => $Comment;
768 ok $x->write($string) ;
769 ok $x->close ;
770
771 substr($truncated, $index) = '' ;
772 #my $lex = new LexFile my $name ;
773 #writeFile($name, $truncated) ;
774
775 #my $g = new IO::Uncompress::Gunzip $name, -Transparent => 0;
776 my $g = new IO::Uncompress::Gunzip \$truncated, -Transparent => 0;
777 ok ! $g
778 or print "# $g\n" ;
779
780 like $GunzipError, '/^Header Error: Truncated in FCOMMENT Section/';
781
782}
783
784for my $index ( GZIP_MIN_HEADER_SIZE .. GZIP_MIN_HEADER_SIZE + GZIP_FHCRC_SIZE -1)
785{
786 title "Header Corruption - Truncated in CRC";
787 my $string = <<EOM;
788some text
789EOM
790
791 my $truncated ;
792 ok my $x = new IO::Compress::Gzip \$truncated, -HeaderCRC => 1;
793 ok $x->write($string) ;
794 ok $x->close ;
795
796 substr($truncated, $index) = '' ;
797 my $lex = new LexFile my $name ;
798 writeFile($name, $truncated) ;
799
800 my $g = new IO::Uncompress::Gunzip $name, -Transparent => 0;
801 #my $g = new IO::Uncompress::Gunzip \$truncated, -Transparent => 0;
802 ok ! $g
803 or print "# $g\n" ;
804
805 like $GunzipError, '/^Header Error: Truncated in FHCRC Section/';
806
807}
808
809
810{
811 # Trailer Corruption tests
812
813 my $string = <<EOM;
814some text
815EOM
816
817 my $good ;
818 {
819 ok my $x = new IO::Compress::Gzip \$good ;
820 ok $x->write($string) ;
821 ok $x->close ;
822 }
823
824 writeFile($name, $good) ;
825 ok my $gunz = new IO::Uncompress::Gunzip $name,
826 -Strict => 1;
827 my $uncomp ;
828 1 while $gunz->read($uncomp) > 0 ;
829 ok $gunz->close() ;
830 ok $uncomp eq $string
831 or print "# got [$uncomp] wanted [$string]\n";;
832
833 foreach my $trim (-8 .. -1)
834 {
835 my $got = $trim + 8 ;
836 title "Trailer Corruption - Trailer truncated to $got bytes" ;
837 my $buffer = $good ;
838 my $expected_trailing = substr($good, -8, 8) ;
839 substr($expected_trailing, $trim) = '';
840
841 substr($buffer, $trim) = '';
842 writeFile($name, $buffer) ;
843
844 foreach my $strict (0, 1)
845 {
846 ok my $gunz = new IO::Uncompress::Gunzip $name, -Strict => $strict ;
847 my $uncomp ;
848 if ($strict)
849 {
850 ok $gunz->read($uncomp) < 0 ;
851 like $GunzipError, "/Trailer Error: trailer truncated. Expected 8 bytes, got $got/";
852 }
853 else
854 {
855 ok $gunz->read($uncomp) > 0 ;
856 ok ! $GunzipError ;
857 my $expected = substr($buffer, - $got);
858 is $gunz->trailingData(), $expected_trailing;
859 }
860 ok $gunz->eof() ;
861 ok $uncomp eq $string;
862 ok $gunz->close ;
863 }
864
865 }
866
867 {
868 title "Trailer Corruption - Length Wrong, CRC Correct" ;
869 my $buffer = $good ;
870 my $actual_len = unpack("V", substr($buffer, -4, 4));
871 substr($buffer, -4, 4) = pack('V', $actual_len + 1);
872 writeFile($name, $buffer) ;
873
874 foreach my $strict (0, 1)
875 {
876 ok my $gunz = new IO::Uncompress::Gunzip $name,
877 -Strict => $strict ;
878 my $uncomp ;
879 if ($strict)
880 {
881 ok $gunz->read($uncomp) < 0 ;
882 my $got_len = $actual_len + 1;
883 like $GunzipError, "/Trailer Error: ISIZE mismatch. Got $got_len, expected $actual_len/";
884 }
885 else
886 {
887 ok $gunz->read($uncomp) > 0 ;
888 ok ! $GunzipError ;
889 #is $gunz->trailingData(), substr($buffer, - $got) ;
890 }
891 ok ! $gunz->trailingData() ;
892 ok $gunz->eof() ;
893 ok $uncomp eq $string;
894 ok $gunz->close ;
895 }
896
897 }
898
899 {
900 title "Trailer Corruption - Length Correct, CRC Wrong" ;
901 my $buffer = $good ;
902 my $actual_crc = unpack("V", substr($buffer, -8, 4));
903 substr($buffer, -8, 4) = pack('V', $actual_crc+1);
904 writeFile($name, $buffer) ;
905
906 foreach my $strict (0, 1)
907 {
908 ok my $gunz = new IO::Uncompress::Gunzip $name,
909 -Strict => $strict ;
910 my $uncomp ;
911 if ($strict)
912 {
913 ok $gunz->read($uncomp) < 0 ;
914 like $GunzipError, '/Trailer Error: CRC mismatch/';
915 }
916 else
917 {
918 ok $gunz->read($uncomp) > 0 ;
919 ok ! $GunzipError ;
920 }
921 ok ! $gunz->trailingData() ;
922 ok $gunz->eof() ;
923 ok $uncomp eq $string;
924 ok $gunz->close ;
925 }
926
927 }
928
929 {
930 title "Trailer Corruption - Length Wrong, CRC Wrong" ;
931 my $buffer = $good ;
932 my $actual_len = unpack("V", substr($buffer, -4, 4));
933 my $actual_crc = unpack("V", substr($buffer, -8, 4));
934 substr($buffer, -4, 4) = pack('V', $actual_len+1);
935 substr($buffer, -8, 4) = pack('V', $actual_crc+1);
936 writeFile($name, $buffer) ;
937
938 foreach my $strict (0, 1)
939 {
940 ok my $gunz = new IO::Uncompress::Gunzip $name,
941 -Strict => $strict ;
942 my $uncomp ;
943 if ($strict)
944 {
945 ok $gunz->read($uncomp) < 0 ;
946 like $GunzipError, '/Trailer Error: CRC mismatch/';
947 }
948 else
949 {
950 ok $gunz->read($uncomp) > 0 ;
951 ok ! $GunzipError ;
952 }
953 ok $gunz->eof() ;
954 ok $uncomp eq $string;
955 ok $gunz->close ;
956 }
957
958 }
959}
960
961
962
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