Repository navigation
Expand file tree
/
Copy pathzip.c
More file actions
executable file
·1982 lines (1704 loc) · 71.6 KB
/
Copy pathzip.c
File metadata and controls
executable file
·1982 lines (1704 loc) · 71.6 KB
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
/* zip.c -- IO on .zip files using zlib
Version 1.1, February 14h, 2010
part of the MiniZip project
Copyright (C) 1998-2010 Gilles Vollant
http://www.winimage.com/zLibDll/minizip.html
Modifications for Zip64 support
Copyright (C) 2009-2010 Mathias Svensson
http://result42.com
Modifications for AES, PKWARE disk spanning
Copyright (C) 2010-2014 Nathan Moinvaziri
This program is distributed under the terms of the same license as zlib.
See the accompanying LICENSE file for the full text of the license.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include "zlib.h"
#include "zip.h"
#ifdef HAVE_AES
# define AES_METHOD (99)
# define AES_PWVERIFYSIZE (2)
# define AES_AUTHCODESIZE (10)
# define AES_MAXSALTLENGTH (16)
# define AES_VERSION (0x0001)
# define AES_ENCRYPTIONMODE (0x03)
# include "aes/aes.h"
# include "aes/fileenc.h"
# include "aes/prng.h"
#endif
#ifdef HAVE_APPLE_COMPRESSION
# include <compression.h>
#endif
#ifndef NOCRYPT
# include "crypt.h"
#endif
#define SIZEDATA_INDATABLOCK (4096-(4*4))
#define DISKHEADERMAGIC (0x08074b50)
#define LOCALHEADERMAGIC (0x04034b50)
#define CENTRALHEADERMAGIC (0x02014b50)
#define ENDHEADERMAGIC (0x06054b50)
#define ZIP64ENDHEADERMAGIC (0x06064b50)
#define ZIP64ENDLOCHEADERMAGIC (0x07064b50)
#define DATADESCRIPTORMAGIC (0x08074b50)
#define FLAG_LOCALHEADER_OFFSET (0x06)
#define CRC_LOCALHEADER_OFFSET (0x0e)
#define SIZECENTRALHEADER (0x2e) /* 46 */
#define SIZECENTRALHEADERLOCATOR (0x14) /* 20 */
#define SIZECENTRALDIRITEM (0x2e)
#define SIZEZIPLOCALHEADER (0x1e)
#ifndef BUFREADCOMMENT
# define BUFREADCOMMENT (0x400)
#endif
#ifndef VERSIONMADEBY
# define VERSIONMADEBY (0x0) /* platform dependent */
#endif
#ifndef Z_BUFSIZE
# define Z_BUFSIZE (UINT16_MAX)
#endif
#ifndef ALLOC
# define ALLOC(size) (malloc(size))
#endif
#ifndef TRYFREE
# define TRYFREE(p) {if (p) free(p);}
#endif
/* NOT sure that this work on ALL platform */
#define MAKEULONG64(a, b) ((uint64_t)(((unsigned long)(a)) | ((uint64_t)((unsigned long)(b))) << 32))
#ifndef DEF_MEM_LEVEL
# if MAX_MEM_LEVEL >= 8
# define DEF_MEM_LEVEL 8
# else
# define DEF_MEM_LEVEL MAX_MEM_LEVEL
# endif
#endif
const char zip_copyright[] = " zip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
typedef struct linkedlist_datablock_internal_s
{
struct linkedlist_datablock_internal_s *next_datablock;
uint32_t avail_in_this_block;
uint32_t filled_in_this_block;
uint32_t unused; /* for future use and alignment */
uint8_t data[SIZEDATA_INDATABLOCK];
} linkedlist_datablock_internal;
typedef struct linkedlist_data_s
{
linkedlist_datablock_internal *first_block;
linkedlist_datablock_internal *last_block;
} linkedlist_data;
typedef struct
{
z_stream stream; /* zLib stream structure for inflate */
#ifdef HAVE_BZIP2
bz_stream bstream; /* bzLib stream structure for bziped */
#endif
#ifdef HAVE_APPLE_COMPRESSION
compression_stream astream; /* libcompression stream structure */
#endif
#ifdef HAVE_AES
fcrypt_ctx aes_ctx;
prng_ctx aes_rng[1];
#endif
int stream_initialised; /* 1 is stream is initialized */
uint32_t pos_in_buffered_data; /* last written byte in buffered_data */
uint64_t pos_local_header; /* offset of the local header of the file currently writing */
char *central_header; /* central header data for the current file */
uint16_t size_centralextra;
uint16_t size_centralheader; /* size of the central header for cur file */
uint16_t size_centralextrafree; /* Extra bytes allocated to the central header but that are not used */
uint16_t size_comment;
uint16_t flag; /* flag of the file currently writing */
uint16_t method; /* compression method written to file.*/
uint16_t compression_method; /* compression method to use */
int raw; /* 1 for directly writing raw data */
uint8_t buffered_data[Z_BUFSIZE]; /* buffer contain compressed data to be writ*/
uint32_t dos_date;
uint32_t crc32;
int zip64; /* add ZIP64 extended information in the extra field */
uint32_t number_disk; /* number of current disk used for spanning ZIP */
uint64_t total_compressed;
uint64_t total_uncompressed;
#ifndef NOCRYPT
uint32_t keys[3]; /* keys defining the pseudo-random sequence */
const uint32_t *pcrc_32_tab;
#endif
} curfile64_info;
typedef struct
{
zlib_filefunc64_32_def z_filefunc;
voidpf filestream; /* io structure of the zipfile */
voidpf filestream_with_CD; /* io structure of the zipfile with the central dir */
linkedlist_data central_dir; /* datablock with central dir in construction*/
int in_opened_file_inzip; /* 1 if a file in the zip is currently writ.*/
int append; /* append mode */
curfile64_info ci; /* info on the file currently writing */
uint64_t add_position_when_writting_offset;
uint64_t number_entry;
uint64_t disk_size; /* size of each disk */
uint32_t number_disk; /* number of the current disk, used for spanning ZIP */
uint32_t number_disk_with_CD; /* number the the disk with central dir, used for spanning ZIP */
#ifndef NO_ADDFILEINEXISTINGZIP
char *globalcomment;
#endif
} zip64_internal;
/* Allocate a new data block */
static linkedlist_datablock_internal *allocate_new_datablock(void)
{
linkedlist_datablock_internal *ldi = NULL;
ldi = (linkedlist_datablock_internal*)ALLOC(sizeof(linkedlist_datablock_internal));
if (ldi != NULL)
{
ldi->next_datablock = NULL;
ldi->filled_in_this_block = 0;
ldi->avail_in_this_block = SIZEDATA_INDATABLOCK;
}
return ldi;
}
/* Free data block in linked list */static void free_datablock(linkedlist_datablock_internal *ldi)
{
while (ldi != NULL)
{
linkedlist_datablock_internal *ldinext = ldi->next_datablock;
TRYFREE(ldi);
ldi = ldinext;
}
}
/* Initialize linked list */
static void init_linkedlist(linkedlist_data *ll)
{
ll->first_block = ll->last_block = NULL;
}
/* Free entire linked list and all data blocks */
static void free_linkedlist(linkedlist_data *ll)
{
free_datablock(ll->first_block);
ll->first_block = ll->last_block = NULL;
}
/* Add data to linked list data block */
static int add_data_in_datablock(linkedlist_data *ll, const void *buf, uint32_t len)
{
linkedlist_datablock_internal *ldi = NULL;
const unsigned char *from_copy = NULL;
if (ll == NULL)
return ZIP_INTERNALERROR;
if (ll->last_block == NULL)
{
ll->first_block = ll->last_block = allocate_new_datablock();
if (ll->first_block == NULL)
return ZIP_INTERNALERROR;
}
ldi = ll->last_block;
from_copy = (unsigned char*)buf;
while (len > 0)
{
uint32_t copy_this = 0;
uint32_t i = 0;
unsigned char *to_copy = NULL;
if (ldi->avail_in_this_block == 0)
{
ldi->next_datablock = allocate_new_datablock();
if (ldi->next_datablock == NULL)
return ZIP_INTERNALERROR;
ldi = ldi->next_datablock ;
ll->last_block = ldi;
}
if (ldi->avail_in_this_block < len)
copy_this = ldi->avail_in_this_block;
else
copy_this = len;
to_copy = &(ldi->data[ldi->filled_in_this_block]);
for (i = 0; i < copy_this; i++)
*(to_copy+i) = *(from_copy+i);
ldi->filled_in_this_block += copy_this;
ldi->avail_in_this_block -= copy_this;
from_copy += copy_this;
len -= copy_this;
}
return ZIP_OK;
}
/* Inputs a long in LSB order to the given file: nbByte == 1, 2 ,4 or 8 (byte, short or long, uint64_t) */
static int zipWriteValue(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream,
uint64_t x, uint32_t len)
{
unsigned char buf[8];
uint32_t n = 0;
for (n = 0; n < len; n++)
{
buf[n] = (unsigned char)(x & 0xff);
x >>= 8;
}
if (x != 0)
{
/* Data overflow - hack for ZIP64 (X Roche) */
for (n = 0; n < len; n++)
{
buf[n] = 0xff;
}
}
if (ZWRITE64(*pzlib_filefunc_def, filestream, buf, len) != len)
return ZIP_ERRNO;
return ZIP_OK;
}
static uint64_t zipReadValueFromMemory(void* src, uint32_t len)
{
unsigned char *buf = (unsigned char*)src;
uint64_t x = 0;
uint32_t n = 0;
for (n = 0; n < len; n++)
{
x <<= 8;
x |= buf[len - n - 1];
}
return x;
}
static void zipWriteValueToMemory(void* dest, uint64_t x, uint32_t len)
{
unsigned char *buf = (unsigned char*)dest;
uint32_t n = 0;
for (n = 0; n < len; n++)
{
buf[n] = (unsigned char)(x & 0xff);
x >>= 8;
}
if (x != 0)
{
/* data overflow - hack for ZIP64 */
for (n = 0; n < len; n++)
{
buf[n] = 0xff;
}
}
}
static void zipWriteValueToMemoryAndMove(unsigned char **dest_ptr, uint64_t x, uint32_t len)
{
zipWriteValueToMemory(*dest_ptr, x, len);
*dest_ptr += len;
}
static int zipReadUInt8(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint8_t *value)
{
uint8_t c = 0;
if (ZREAD64(*pzlib_filefunc_def, filestream, &c, 1) == 1)
{
*value = (uint8_t)c;
return ZIP_OK;
}
if (ZERROR64(*pzlib_filefunc_def, filestream))
return ZIP_ERRNO;
return ZIP_EOF;
}
static int zipReadUInt16(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint16_t *value)
{
uint16_t x = 0;
uint8_t c = 0;
int err = ZIP_OK;
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x = (uint16_t)c;
if (err == ZIP_OK)
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x += ((uint16_t)c) << 8;
if (err == ZIP_OK)
*value = x;
else
*value = 0;
return err;
}
static int zipReadUInt32(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint32_t *value)
{
uint32_t x = 0;
uint8_t c = 0;
int err = ZIP_OK;
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x = (uint32_t)c;
if (err == ZIP_OK)
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x += ((uint32_t)c) << 8;
if (err == ZIP_OK)
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x += ((uint32_t)c) << 16;
if (err == ZIP_OK)
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x += ((uint32_t)c) << 24;
if (err == ZIP_OK)
*value = x;
else
*value = 0;
return err;
}
static int zipReadUInt64(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint64_t *value)
{
uint64_t x = 0;
uint8_t c = 0;
int err = ZIP_OK;
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x = (uint64_t)c;
if (err == ZIP_OK)
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x += ((uint64_t)c) << 8;
if (err == ZIP_OK)
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x += ((uint64_t)c) << 16;
if (err == ZIP_OK)
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x += ((uint64_t)c) << 24;
if (err == ZIP_OK)
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x += ((uint64_t)c) << 32;
if (err == ZIP_OK)
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x += ((uint64_t)c) << 40;
if (err == ZIP_OK)
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x += ((uint64_t)c) << 48;
if (err == ZIP_OK)
err = zipReadUInt8(pzlib_filefunc_def, filestream, &c);
x += ((uint64_t)c) << 56;
if (err == ZIP_OK)
*value = x;
else
*value = 0;
return err;
}
/* Gets the amount of bytes left to write to the current disk for spanning archives */
static int zipGetDiskSizeAvailable(zipFile file, uint64_t *size_available)
{
zip64_internal *zi = NULL;
uint64_t current_disk_size = 0;
zi = (zip64_internal*)file;
ZSEEK64(zi->z_filefunc, zi->filestream, 0, ZLIB_FILEFUNC_SEEK_END);
current_disk_size = ZTELL64(zi->z_filefunc, zi->filestream);
*size_available = zi->disk_size - current_disk_size;
return ZIP_OK;
}
/* Goes to a specific disk number for spanning archives */
static int zipGoToSpecificDisk(zipFile file, uint32_t number_disk, int open_existing)
{
zip64_internal *zi = NULL;
int err = ZIP_OK;
zi = (zip64_internal*)file;
if (zi->disk_size == 0)
return err;
if ((zi->filestream != NULL) && (zi->filestream != zi->filestream_with_CD))
ZCLOSE64(zi->z_filefunc, zi->filestream);
zi->filestream = ZOPENDISK64(zi->z_filefunc, zi->filestream_with_CD, number_disk, (open_existing == 1) ?
(ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING) :
(ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE));
if (zi->filestream == NULL)
err = ZIP_ERRNO;
return err;
}
/* Goes to the first disk in a spanned archive */
static int zipGoToFirstDisk(zipFile file)
{
zip64_internal *zi = NULL;
uint32_t number_disk_next = 0;
int err = ZIP_OK;
zi = (zip64_internal*)file;
if (zi->disk_size == 0)
return err;
number_disk_next = 0;
if (zi->number_disk_with_CD > 0)
number_disk_next = zi->number_disk_with_CD - 1;
err = zipGoToSpecificDisk(file, number_disk_next, (zi->append == APPEND_STATUS_ADDINZIP));
if ((err == ZIP_ERRNO) && (zi->append == APPEND_STATUS_ADDINZIP))
err = zipGoToSpecificDisk(file, number_disk_next, 0);
if (err == ZIP_OK)
zi->number_disk = number_disk_next;
ZSEEK64(zi->z_filefunc, zi->filestream, 0, ZLIB_FILEFUNC_SEEK_END);
return err;
}
/* Goes to the next disk in a spanned archive */
static int zipGoToNextDisk(zipFile file)
{
zip64_internal *zi = NULL;
uint64_t size_available_in_disk = 0;
uint32_t number_disk_next = 0;
int err = ZIP_OK;
zi = (zip64_internal*)file;
if (zi->disk_size == 0)
return err;
number_disk_next = zi->number_disk + 1;
do
{
err = zipGoToSpecificDisk(file, number_disk_next, (zi->append == APPEND_STATUS_ADDINZIP));
if ((err == ZIP_ERRNO) && (zi->append == APPEND_STATUS_ADDINZIP))
err = zipGoToSpecificDisk(file, number_disk_next, 0);
if (err != ZIP_OK)
break;
err = zipGetDiskSizeAvailable(file, &size_available_in_disk);
if (err != ZIP_OK)
break;
zi->number_disk = number_disk_next;
zi->number_disk_with_CD = zi->number_disk + 1;
number_disk_next += 1;
}
while (size_available_in_disk <= 0);
return err;
}
/* Locate the Central directory of a zipfile (at the end, just before the global comment) */
static uint64_t zipSearchCentralDir(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream)
{
unsigned char *buf = NULL;
uint64_t file_size = 0;
uint64_t back_read = 4;
uint64_t max_back = UINT16_MAX; /* maximum size of global comment */
uint64_t pos_found = 0;
uint32_t read_size = 0;
uint64_t read_pos = 0;
uint32_t i = 0;
buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
if (buf == NULL)
return 0;
if (ZSEEK64(*pzlib_filefunc_def, filestream, 0, ZLIB_FILEFUNC_SEEK_END) != 0)
{
TRYFREE(buf);
return 0;
}
file_size = ZTELL64(*pzlib_filefunc_def, filestream);
if (max_back > file_size)
max_back = file_size;
while (back_read < max_back)
{
if (back_read + BUFREADCOMMENT > max_back)
back_read = max_back;
else
back_read += BUFREADCOMMENT;
read_pos = file_size-back_read;
read_size = ((BUFREADCOMMENT+4) < (file_size - read_pos)) ?
(BUFREADCOMMENT+4) : (uint32_t)(file_size - read_pos);
if (ZSEEK64(*pzlib_filefunc_def, filestream, read_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
break;
if (ZREAD64(*pzlib_filefunc_def, filestream, buf, read_size) != read_size)
break;
for (i = read_size-3; (i--) > 0;)
if ((*(buf+i)) == (ENDHEADERMAGIC & 0xff) &&
(*(buf+i+1)) == (ENDHEADERMAGIC >> 8 & 0xff) &&
(*(buf+i+2)) == (ENDHEADERMAGIC >> 16 & 0xff) &&
(*(buf+i+3)) == (ENDHEADERMAGIC >> 24 & 0xff))
{
pos_found = read_pos+i;
break;
}
if (pos_found != 0)
break;
}
TRYFREE(buf);
return pos_found;
}
/* Locate the Central directory 64 of a zipfile (at the end, just before the global comment) */
static uint64_t zipSearchCentralDir64(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream,
const uint64_t endcentraloffset)
{
uint64_t offset = 0;
uint32_t value32 = 0;
/* Zip64 end of central directory locator */
if (ZSEEK64(*pzlib_filefunc_def, filestream, endcentraloffset - SIZECENTRALHEADERLOCATOR, ZLIB_FILEFUNC_SEEK_SET) != 0)
return 0;
/* Read locator signature */
if (zipReadUInt32(pzlib_filefunc_def, filestream, &value32) != ZIP_OK)
return 0;
if (value32 != ZIP64ENDLOCHEADERMAGIC)
return 0;
/* Number of the disk with the start of the zip64 end of central directory */
if (zipReadUInt32(pzlib_filefunc_def, filestream, &
10BC8
value32) != ZIP_OK)
return 0;
/* Relative offset of the zip64 end of central directory record */
if (zipReadUInt64(pzlib_filefunc_def, filestream, &offset) != ZIP_OK)
return 0;
/* Total number of disks */
if (zipReadUInt32(pzlib_filefunc_def, filestream, &value32) != ZIP_OK)
return 0;
/* Goto end of central directory record */
if (ZSEEK64(*pzlib_filefunc_def,filestream, offset, ZLIB_FILEFUNC_SEEK_SET) != 0)
return 0;
/* The signature */
if (zipReadUInt32(pzlib_filefunc_def, filestream, &value32) != ZIP_OK)
return 0;
if (value32 != ZIP64ENDHEADERMAGIC)
return 0;
return offset;
}
extern zipFile ZEXPORT zipOpen4(const void *path, int append, uint64_t disk_size, const char **globalcomment,
zlib_filefunc64_32_def *pzlib_filefunc64_32_def)
{
zip64_internal ziinit;
zip64_internal *zi = NULL;
#ifndef NO_ADDFILEINEXISTINGZIP
uint64_t byte_before_the_zipfile = 0; /* byte before the zipfile, (>0 for sfx)*/
uint64_t size_central_dir = 0; /* size of the central directory */
uint64_t offset_central_dir = 0; /* offset of start of central directory */
uint64_t number_entry_CD = 0; /* total number of entries in the central dir */
uint64_t number_entry = 0;
uint64_t central_pos = 0;
uint64_t size_central_dir_to_read = 0;
uint16_t value16 = 0;
uint32_t value32 = 0;
uint16_t size_comment = 0;
size_t buf_size = SIZEDATA_INDATABLOCK;
void *buf_read = NULL;
#endif
int err = ZIP_OK;
int mode = 0;
ziinit.z_filefunc.zseek32_file = NULL;
ziinit.z_filefunc.ztell32_file = NULL;
if (pzlib_filefunc64_32_def == NULL)
fill_fopen64_filefunc(&ziinit.z_filefunc.zfile_func64);
else
ziinit.z_filefunc = *pzlib_filefunc64_32_def;
if (append == APPEND_STATUS_CREATE)
mode = (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE);
else
mode = (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING);
ziinit.filestream = ZOPEN64(ziinit.z_filefunc, path, mode);
if (ziinit.filestream == NULL)
return NULL;
if (append == APPEND_STATUS_CREATEAFTER)
{
/* Don't support spanning ZIP with APPEND_STATUS_CREATEAFTER */
if (disk_size > 0)
return NULL;
ZSEEK64(ziinit.z_filefunc,ziinit.filestream,0,SEEK_END);
}
ziinit.filestream_with_CD = ziinit.filestream;
ziinit.append = append;
ziinit.number_disk = 0;
ziinit.number_disk_with_CD = 0;
ziinit.disk_size = disk_size;
ziinit.in_opened_file_inzip = 0;
ziinit.ci.stream_initialised = 0;
ziinit.number_entry = 0;
ziinit.add_position_when_writting_offset = 0;
init_linkedlist(&(ziinit.central_dir));
zi = (zip64_internal*)ALLOC(sizeof(zip64_internal));
if (zi == NULL)
{
ZCLOSE64(ziinit.z_filefunc,ziinit.filestream);
return NULL;
}
#ifndef NO_ADDFILEINEXISTINGZIP
/* Add file in a zipfile */
ziinit.globalcomment = NULL;
if (append == APPEND_STATUS_ADDINZIP)
{
/* Read and Cache Central Directory Records */
central_pos = zipSearchCentralDir(&ziinit.z_filefunc,ziinit.filestream);
/* Disable to allow appending to empty ZIP archive (must be standard zip, not zip64)
if (central_pos == 0)
err = ZIP_ERRNO;
*/
if (err == ZIP_OK)
{
/* Read end of central directory info */
if (ZSEEK64(ziinit.z_filefunc, ziinit.filestream, central_pos,ZLIB_FILEFUNC_SEEK_SET) != 0)
err = ZIP_ERRNO;
/* The signature, already checked */
if (zipReadUInt32(&ziinit.z_filefunc, ziinit.filestream, &value32) != ZIP_OK)
err = ZIP_ERRNO;
/* Number of this disk */
if (zipReadUInt16(&ziinit.z_filefunc, ziinit.filestream, &value16) != ZIP_OK)
err = ZIP_ERRNO;
ziinit.number_disk = value16;
/* Number of the disk with the start of the central directory */
if (zipReadUInt16(&ziinit.z_filefunc, ziinit.filestream, &value16) != ZIP_OK)
err = ZIP_ERRNO;
ziinit.number_disk_with_CD = value16;
/* Total number of entries in the central dir on this disk */
number_entry = 0;
if (zipReadUInt16(&ziinit.z_filefunc, ziinit.filestream, &value16) != ZIP_OK)
err = ZIP_ERRNO;
else
number_entry = value16;
/* Total number of entries in the central dir */
number_entry_CD = 0;
if (zipReadUInt16(&ziinit.z_filefunc, ziinit.filestream, &value16) != ZIP_OK)
err = ZIP_ERRNO;
else
number_entry_CD = value16;
if (number_entry_CD!=number_entry)
err = ZIP_BADZIPFILE;
/* Size of the central directory */
size_central_dir = 0;
if (zipReadUInt32(&ziinit.z_filefunc, ziinit.filestream, &value32) != ZIP_OK)
err = ZIP_ERRNO;
else
size_central_dir = value32;
/* Offset of start of central directory with respect to the starting disk number */
offset_central_dir = 0;
if (zipReadUInt32(&ziinit.z_filefunc, ziinit.filestream, &value32) != ZIP_OK)
err = ZIP_ERRNO;
else
offset_central_dir = value32;
/* Zipfile global comment length */
if (zipReadUInt16(&ziinit.z_filefunc, ziinit.filestream, &size_comment) != ZIP_OK)
err = ZIP_ERRNO;
if ((err == ZIP_OK) && ((number_entry_CD == UINT16_MAX) || (offset_central_dir == UINT32_MAX)))
{
/* Format should be Zip64, as the central directory or file size is too large */
central_pos = zipSearchCentralDir64(&ziinit.z_filefunc, ziinit.filestream, central_pos);
if (central_pos)
{
uint64_t sizeEndOfCentralDirectory;
if (ZSEEK64(ziinit.z_filefunc, ziinit.filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
err = ZIP_ERRNO;
/* The signature, already checked */
if (zipReadUInt32(&ziinit.z_filefunc, ziinit.filestream, &value32) != ZIP_OK)
err = ZIP_ERRNO;
/* Size of zip64 end of central directory record */
if (zipReadUInt64(&ziinit.z_filefunc, ziinit.filestream, &sizeEndOfCentralDirectory) != ZIP_OK)
err = ZIP_ERRNO;
/* Version made by */
if (zipReadUInt16(&ziinit.z_filefunc, ziinit.filestream, &value16) != ZIP_OK)
err = ZIP_ERRNO;
/* Version needed to extract */
if (zipReadUInt16(&ziinit.z_filefunc, ziinit.filestream, &value16) != ZIP_OK)
err = ZIP_ERRNO;
/* Number of this disk */
if (zipReadUInt32(&ziinit.z_filefunc, ziinit.filestream, &ziinit.number_disk) != ZIP_OK)
err = ZIP_ERRNO;
/* Number of the disk with the start of the central directory */
if (zipReadUInt32(&ziinit.z_filefunc, ziinit.filestream, &ziinit.number_disk_with_CD) != ZIP_OK)
err = ZIP_ERRNO;
/* Total number of entries in the central directory on this disk */
if (zipReadUInt64(&ziinit.z_filefunc, ziinit.filestream, &number_entry) != ZIP_OK)
err = ZIP_ERRNO;
/* Total number of entries in the central directory */
if (zipReadUInt64(&ziinit.z_filefunc, ziinit.filestream, &number_entry_CD) != ZIP_OK)
err = ZIP_ERRNO;
if (number_entry_CD!=number_entry)
err = ZIP_BADZIPFILE;
/* Size of the central directory */
if (zipReadUInt64(&ziinit.z_filefunc, ziinit.filestream, &size_central_dir) != ZIP_OK)
err = ZIP_ERRNO;
/* Offset of start of central directory with respect to the starting disk number */
if (zipReadUInt64(&ziinit.z_filefunc, ziinit.filestream, &offset_central_dir) != ZIP_OK)
err = ZIP_ERRNO;
}
else
err = ZIP_BADZIPFILE;
}
}
if ((err == ZIP_OK) && (central_pos < offset_central_dir + size_central_dir))
err = ZIP_BADZIPFILE;
if ((err == ZIP_OK) && (size_comment > 0))
{
ziinit.globalcomment = (char*)ALLOC(size_comment+1);
if (ziinit.globalcomment)
{
if (ZREAD64(ziinit.z_filefunc, ziinit.filestream, ziinit.globalcomment, size_comment) != size_comment)
err = ZIP_ERRNO;
else
ziinit.globalcomment[size_comment] = 0;
}
}
if (err != ZIP_OK)
{
ZCLOSE64(ziinit.z_filefunc, ziinit.filestream);
TRYFREE(ziinit.globalcomment);
TRYFREE(zi);
return NULL;
}
byte_before_the_zipfile = central_pos - (offset_central_dir+size_central_dir);
ziinit.add_position_when_writting_offset = byte_before_the_zipfile;
/* Store central directory in memory */
size_central_dir_to_read = size_central_dir;
buf_size = SIZEDATA_INDATABLOCK;
buf_read = (void*)ALLOC(buf_size);
if (ZSEEK64(ziinit.z_filefunc, ziinit.filestream,
offset_central_dir + byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0)
err = ZIP_ERRNO;
while ((size_central_dir_to_read > 0) && (err == ZIP_OK))
{
uint64_t read_this = SIZEDATA_INDATABLOCK;
if (read_this > size_central_dir_to_read)
read_this = size_central_dir_to_read;
if (ZREAD64(ziinit.z_filefunc, ziinit.filestream, buf_read, (uint32_t)read_this) != read_this)
err = ZIP_ERRNO;
if (err == ZIP_OK)
err = add_data_in_datablock(&ziinit.central_dir, buf_read, (uint32_t)read_this);
size_central_dir_to_read -= read_this;
}
TRYFREE(buf_read);
ziinit.number_entry = number_entry_CD;
if (ZSEEK64(ziinit.z_filefunc, ziinit.filestream,
offset_central_dir+byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0)
err = ZIP_ERRNO;
}
if (globalcomment)
*globalcomment = ziinit.globalcomment;
#endif
if (err != ZIP_OK)
{
#ifndef NO_ADDFILEINEXISTINGZIP
TRYFREE(ziinit.globalcomment);
#endif
TRYFREE(zi);
return NULL;
}
*zi = ziinit;
zipGoToFirstDisk((zipFile)zi);
return(zipFile)zi;
}
extern zipFile ZEXPORT zipOpen2(const char *path, int append, const char **globalcomment,
zlib_filefunc_def *pzlib_filefunc32_def)
{
if (pzlib_filefunc32_def != NULL)
{
zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill,pzlib_filefunc32_def);
return zipOpen4(path, append, 0, globalcomment, &zlib_filefunc64_32_def_fill);
}
return zipOpen4(path, append, 0, globalcomment, NULL);
}
extern zipFile ZEXPORT zipOpen2_64(const void *path, int append, const char **globalcomment,
zlib_filefunc64_def *pzlib_filefunc_def)
{
if (pzlib_filefunc_def != NULL)
{
zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def;
zlib_filefunc64_32_def_fill.ztell32_file = NULL;
zlib_filefunc64_32_def_fill.zseek32_file = NULL;
return zipOpen4(path, append, 0, globalcomment, &zlib_filefunc64_32_def_fill);
}
return zipOpen4(path, append, 0, globalcomment, NULL);
}
extern zipFile ZEXPORT zipOpen3(const char *path, int append, uint64_t disk_size, const char **globalcomment,
zlib_filefunc_def *pzlib_filefunc32_def)
{
if (pzlib_filefunc32_def != NULL)
{
zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill,pzlib_filefunc32_def);
return zipOpen4(path, append, disk_size, globalcomment, &zlib_filefunc64_32_def_fill);
}
return zipOpen4(path, append, disk_size, globalcomment, NULL);
}
extern zipFile ZEXPORT zipOpen3_64(const void *path, int append, uint64_t disk_size, const char **globalcomment,
zlib_filefunc64_def *pzlib_filefunc_def)
{
if (pzlib_filefunc_def != NULL)
{
zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def;
zlib_filefunc64_32_def_fill.ztell32_file = NULL;
zlib_filefunc64_32_def_fill.zseek32_file = NULL;
return zipOpen4(path, append, disk_size, globalcomment, &zlib_filefunc64_32_def_fill);
}
return zipOpen4(path, append, disk_size, globalcomment, NULL);
}
extern zipFile ZEXPORT zipOpen(const char *path, int append)
{
return zipOpen3((const void*)path, append, 0, NULL, NULL);
}
extern zipFile ZEXPORT zipOpen64(const void *path, int append)
{
return zipOpen3(path, append, 0, NULL, NULL);
}
extern int ZEXPORT zipOpenNewFileInZip4_64(zipFile file, const char *filename, const zip_fileinfo *zipfi,
const void *extrafield_local, uint16_t size_extrafield_local, const void *extrafield_global,
uint16_t size_extrafield_global, const char *comment, uint16_t method, int level, int raw, int windowBits, int memLevel,
int strategy, const char *password, uint32_t crc_for_crypting, uint16_t version_madeby, uint16_t flag_base, int zip64)
{
zip64_internal *zi = NULL;
uint64_t size_available = 0;
uint64_t size_needed = 0;
uint16_t size_filename = 0;
uint16_t size_comment = 0;
uint16_t i = 0;
unsigned char *central_dir = NULL;
int err = ZIP_OK;
#ifdef NOCRYPT
(crc_for_crypting);
if (password != NULL)
return ZIP_PARAMERROR;
#endif
if (file == NULL)
return ZIP_PARAMERROR;
if ((method != 0) &&
#ifdef HAVE_BZIP2
(method != Z_BZIP2ED) &&
#endif
(method != Z_DEFLATED))
return ZIP_PARAMERROR;
zi = (zip64_internal*)file;
if (zi->in_opened_file_inzip == 1)
{
err = zipCloseFileInZip (file);
if (err != ZIP_OK)
return err;
}
if (filename == NULL)
filename = "-";
if (comment != NULL)
size_comment = (uint16_t)strlen(comment);
size_filename = (uint16_t)strlen(filename);
if (zipfi == NULL)
zi->ci.dos_date = 0;
else
{
if (zipfi->dos_date != 0)
zi->ci.dos_date = zipfi->dos_date;
}
zi->ci.method = method;
zi->ci.compression_method = method;
zi->ci.raw = raw;
zi->ci.flag = flag_base | 8;
if ((level == 8) || (level == 9))
zi->ci.flag |= 2;
if (level == 2)
zi->ci.flag |= 4;
if (level == 1)
zi->ci.flag |= 6;
if (password != NULL)
{
zi->ci.flag |= 1;
#ifdef HAVE_AES
zi->ci.method = AES_METHOD;
#endif
}
else