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| 1 /* zip.c -- IO on .zip files using zlib |
| 2 Version 1.1, February 14h, 2010 |
| 3 part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html
) |
| 4 |
| 5 Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.
com/zLibDll/minizip.html ) |
| 6 |
| 7 Modifications for Zip64 support |
| 8 Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) |
| 9 |
| 10 For more info read MiniZip_info.txt |
| 11 |
| 12 Changes |
| 13 Oct-2009 - Mathias Svensson - Remove old C style function prototypes |
| 14 Oct-2009 - Mathias Svensson - Added Zip64 Support when creating new file arch
ives |
| 15 Oct-2009 - Mathias Svensson - Did some code cleanup and refactoring to get be
tter overview of some functions. |
| 16 Oct-2009 - Mathias Svensson - Added zipRemoveExtraInfoBlock to strip extra fi
eld data from its ZIP64 data |
| 17 It is used when recreting zip archive with RAW
when deleting items from a zip. |
| 18 ZIP64 data is automaticly added to items that n
eeds it, and existing ZIP64 data need to be removed. |
| 19 Oct-2009 - Mathias Svensson - Added support for BZIP2 as compression mode (bz
ip2 lib is required) |
| 20 Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility laye
r |
| 21 |
| 22 */ |
| 23 |
| 24 |
| 25 #include <stdio.h> |
| 26 #include <stdlib.h> |
| 27 #include <string.h> |
| 28 #include <time.h> |
| 29 #include "third_party/zlib/zlib.h" |
| 30 #include "zip.h" |
| 31 |
| 32 #ifdef STDC |
| 33 # include <stddef.h> |
| 34 # include <string.h> |
| 35 # include <stdlib.h> |
| 36 #endif |
| 37 #ifdef NO_ERRNO_H |
| 38 extern int errno; |
| 39 #else |
| 40 # include <errno.h> |
| 41 #endif |
| 42 |
| 43 |
| 44 #ifndef local |
| 45 # define local static |
| 46 #endif |
| 47 /* compile with -Dlocal if your debugger can't find static symbols */ |
| 48 |
| 49 #ifndef VERSIONMADEBY |
| 50 # define VERSIONMADEBY (0x0) /* platform depedent */ |
| 51 #endif |
| 52 |
| 53 #ifndef Z_BUFSIZE |
| 54 #define Z_BUFSIZE (64*1024) //(16384) |
| 55 #endif |
| 56 |
| 57 #ifndef Z_MAXFILENAMEINZIP |
| 58 #define Z_MAXFILENAMEINZIP (256) |
| 59 #endif |
| 60 |
| 61 #ifndef ALLOC |
| 62 # define ALLOC(size) (malloc(size)) |
| 63 #endif |
| 64 #ifndef TRYFREE |
| 65 # define TRYFREE(p) {if (p) free(p);} |
| 66 #endif |
| 67 |
| 68 /* |
| 69 #define SIZECENTRALDIRITEM (0x2e) |
| 70 #define SIZEZIPLOCALHEADER (0x1e) |
| 71 */ |
| 72 |
| 73 /* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */ |
| 74 |
| 75 |
| 76 // NOT sure that this work on ALL platform |
| 77 #define MAKEULONG64(a, b) ((ZPOS64_T)(((unsigned long)(a)) | ((ZPOS64_T)((unsign
ed long)(b))) << 32)) |
| 78 |
| 79 #ifndef SEEK_CUR |
| 80 #define SEEK_CUR 1 |
| 81 #endif |
| 82 |
| 83 #ifndef SEEK_END |
| 84 #define SEEK_END 2 |
| 85 #endif |
| 86 |
| 87 #ifndef SEEK_SET |
| 88 #define SEEK_SET 0 |
| 89 #endif |
| 90 |
| 91 #ifndef DEF_MEM_LEVEL |
| 92 #if MAX_MEM_LEVEL >= 8 |
| 93 # define DEF_MEM_LEVEL 8 |
| 94 #else |
| 95 # define DEF_MEM_LEVEL MAX_MEM_LEVEL |
| 96 #endif |
| 97 #endif |
| 98 const char zip_copyright[] =" zip 1.01 Copyright 1998-2004 Gilles Vollant - http
://www.winimage.com/zLibDll"; |
| 99 |
| 100 |
| 101 #define SIZEDATA_INDATABLOCK (4096-(4*4)) |
| 102 |
| 103 #define LOCALHEADERMAGIC (0x04034b50) |
| 104 #define CENTRALHEADERMAGIC (0x02014b50) |
| 105 #define ENDHEADERMAGIC (0x06054b50) |
| 106 #define ZIP64ENDHEADERMAGIC (0x6064b50) |
| 107 #define ZIP64ENDLOCHEADERMAGIC (0x7064b50) |
| 108 |
| 109 #define FLAG_LOCALHEADER_OFFSET (0x06) |
| 110 #define CRC_LOCALHEADER_OFFSET (0x0e) |
| 111 |
| 112 #define SIZECENTRALHEADER (0x2e) /* 46 */ |
| 113 |
| 114 typedef struct linkedlist_datablock_internal_s |
| 115 { |
| 116 struct linkedlist_datablock_internal_s* next_datablock; |
| 117 uLong avail_in_this_block; |
| 118 uLong filled_in_this_block; |
| 119 uLong unused; /* for future use and alignement */ |
| 120 unsigned char data[SIZEDATA_INDATABLOCK]; |
| 121 } linkedlist_datablock_internal; |
| 122 |
| 123 typedef struct linkedlist_data_s |
| 124 { |
| 125 linkedlist_datablock_internal* first_block; |
| 126 linkedlist_datablock_internal* last_block; |
| 127 } linkedlist_data; |
| 128 |
| 129 |
| 130 typedef struct |
| 131 { |
| 132 z_stream stream; /* zLib stream structure for inflate */ |
| 133 #ifdef HAVE_BZIP2 |
| 134 bz_stream bstream; /* bzLib stream structure for bziped */ |
| 135 #endif |
| 136 |
| 137 int stream_initialised; /* 1 is stream is initialised */ |
| 138 uInt pos_in_buffered_data; /* last written byte in buffered_data */ |
| 139 |
| 140 ZPOS64_T pos_local_header; /* offset of the local header of the file |
| 141 currenty writing */ |
| 142 char* central_header; /* central header data for the current file */ |
| 143 uLong size_centralExtra; |
| 144 uLong size_centralheader; /* size of the central header for cur file */ |
| 145 uLong size_centralExtraFree; /* Extra bytes allocated to the centralheader b
ut that are not used */ |
| 146 uLong flag; /* flag of the file currently writing */ |
| 147 |
| 148 int method; /* compression method of file currenty wr.*/ |
| 149 int raw; /* 1 for directly writing raw data */ |
| 150 Byte buffered_data[Z_BUFSIZE];/* buffer contain compressed data to be writ*/ |
| 151 uLong dosDate; |
| 152 uLong crc32; |
| 153 int encrypt; |
| 154 int zip64; /* Add ZIP64 extened information in the extra fiel
d */ |
| 155 ZPOS64_T pos_zip64extrainfo; |
| 156 ZPOS64_T totalCompressedData; |
| 157 ZPOS64_T totalUncompressedData; |
| 158 #ifndef NOCRYPT |
| 159 unsigned long keys[3]; /* keys defining the pseudo-random sequence */ |
| 160 const unsigned long* pcrc_32_tab; |
| 161 int crypt_header_size; |
| 162 #endif |
| 163 } curfile64_info; |
| 164 |
| 165 typedef struct |
| 166 { |
| 167 zlib_filefunc64_32_def z_filefunc; |
| 168 voidpf filestream; /* io structore of the zipfile */ |
| 169 linkedlist_data central_dir;/* datablock with central dir in construction*/ |
| 170 int in_opened_file_inzip; /* 1 if a file in the zip is currently writ.*/ |
| 171 curfile64_info ci; /* info on the file curretly writing */ |
| 172 |
| 173 ZPOS64_T begin_pos; /* position of the beginning of the zipfile *
/ |
| 174 ZPOS64_T add_position_when_writting_offset; |
| 175 ZPOS64_T number_entry; |
| 176 |
| 177 #ifndef NO_ADDFILEINEXISTINGZIP |
| 178 char *globalcomment; |
| 179 #endif |
| 180 |
| 181 } zip64_internal; |
| 182 |
| 183 |
| 184 #ifndef NOCRYPT |
| 185 #define INCLUDECRYPTINGCODE_IFCRYPTALLOWED |
| 186 #include "crypt.h" |
| 187 #endif |
| 188 |
| 189 local linkedlist_datablock_internal* allocate_new_datablock() |
| 190 { |
| 191 linkedlist_datablock_internal* ldi; |
| 192 ldi = (linkedlist_datablock_internal*) |
| 193 ALLOC(sizeof(linkedlist_datablock_internal)); |
| 194 if (ldi!=NULL) |
| 195 { |
| 196 ldi->next_datablock = NULL ; |
| 197 ldi->filled_in_this_block = 0 ; |
| 198 ldi->avail_in_this_block = SIZEDATA_INDATABLOCK ; |
| 199 } |
| 200 return ldi; |
| 201 } |
| 202 |
| 203 local void free_datablock(linkedlist_datablock_internal* ldi) |
| 204 { |
| 205 while (ldi!=NULL) |
| 206 { |
| 207 linkedlist_datablock_internal* ldinext = ldi->next_datablock; |
| 208 TRYFREE(ldi); |
| 209 ldi = ldinext; |
| 210 } |
| 211 } |
| 212 |
| 213 local void init_linkedlist(linkedlist_data* ll) |
| 214 { |
| 215 ll->first_block = ll->last_block = NULL; |
| 216 } |
| 217 |
| 218 local void free_linkedlist(linkedlist_data* ll) |
| 219 { |
| 220 free_datablock(ll->first_block); |
| 221 ll->first_block = ll->last_block = NULL; |
| 222 } |
| 223 |
| 224 |
| 225 local int add_data_in_datablock(linkedlist_data* ll, const void* buf, uLong len) |
| 226 { |
| 227 linkedlist_datablock_internal* ldi; |
| 228 const unsigned char* from_copy; |
| 229 |
| 230 if (ll==NULL) |
| 231 return ZIP_INTERNALERROR; |
| 232 |
| 233 if (ll->last_block == NULL) |
| 234 { |
| 235 ll->first_block = ll->last_block = allocate_new_datablock(); |
| 236 if (ll->first_block == NULL) |
| 237 return ZIP_INTERNALERROR; |
| 238 } |
| 239 |
| 240 ldi = ll->last_block; |
| 241 from_copy = (unsigned char*)buf; |
| 242 |
| 243 while (len>0) |
| 244 { |
| 245 uInt copy_this; |
| 246 uInt i; |
| 247 unsigned char* to_copy; |
| 248 |
| 249 if (ldi->avail_in_this_block==0) |
| 250 { |
| 251 ldi->next_datablock = allocate_new_datablock(); |
| 252 if (ldi->next_datablock == NULL) |
| 253 return ZIP_INTERNALERROR; |
| 254 ldi = ldi->next_datablock ; |
| 255 ll->last_block = ldi; |
| 256 } |
| 257 |
| 258 if (ldi->avail_in_this_block < len) |
| 259 copy_this = (uInt)ldi->avail_in_this_block; |
| 260 else |
| 261 copy_this = (uInt)len; |
| 262 |
| 263 to_copy = &(ldi->data[ldi->filled_in_this_block]); |
| 264 |
| 265 for (i=0;i<copy_this;i++) |
| 266 *(to_copy+i)=*(from_copy+i); |
| 267 |
| 268 ldi->filled_in_this_block += copy_this; |
| 269 ldi->avail_in_this_block -= copy_this; |
| 270 from_copy += copy_this ; |
| 271 len -= copy_this; |
| 272 } |
| 273 return ZIP_OK; |
| 274 } |
| 275 |
| 276 |
| 277 |
| 278 /****************************************************************************/ |
| 279 |
| 280 #ifndef NO_ADDFILEINEXISTINGZIP |
| 281 /* =========================================================================== |
| 282 Inputs a long in LSB order to the given file |
| 283 nbByte == 1, 2 ,4 or 8 (byte, short or long, ZPOS64_T) |
| 284 */ |
| 285 |
| 286 local int zip64local_putValue OF((const zlib_filefunc64_32_def* pzlib_filefunc_d
ef, voidpf filestream, ZPOS64_T x, int nbByte)); |
| 287 local int zip64local_putValue (const zlib_filefunc64_32_def* pzlib_filefunc_def,
voidpf filestream, ZPOS64_T x, int nbByte) |
| 288 { |
| 289 unsigned char buf[8]; |
| 290 int n; |
| 291 for (n = 0; n < nbByte; n++) |
| 292 { |
| 293 buf[n] = (unsigned char)(x & 0xff); |
| 294 x >>= 8; |
| 295 } |
| 296 if (x != 0) |
| 297 { /* data overflow - hack for ZIP64 (X Roche) */ |
| 298 for (n = 0; n < nbByte; n++) |
| 299 { |
| 300 buf[n] = 0xff; |
| 301 } |
| 302 } |
| 303 |
| 304 if (ZWRITE64(*pzlib_filefunc_def,filestream,buf,nbByte)!=(uLong)nbByte) |
| 305 return ZIP_ERRNO; |
| 306 else |
| 307 return ZIP_OK; |
| 308 } |
| 309 |
| 310 local void zip64local_putValue_inmemory OF((void* dest, ZPOS64_T x, int nbByte))
; |
| 311 local void zip64local_putValue_inmemory (void* dest, ZPOS64_T x, int nbByte) |
| 312 { |
| 313 unsigned char* buf=(unsigned char*)dest; |
| 314 int n; |
| 315 for (n = 0; n < nbByte; n++) { |
| 316 buf[n] = (unsigned char)(x & 0xff); |
| 317 x >>= 8; |
| 318 } |
| 319 |
| 320 if (x != 0) |
| 321 { /* data overflow - hack for ZIP64 */ |
| 322 for (n = 0; n < nbByte; n++) |
| 323 { |
| 324 buf[n] = 0xff; |
| 325 } |
| 326 } |
| 327 } |
| 328 |
| 329 /****************************************************************************/ |
| 330 |
| 331 |
| 332 local uLong zip64local_TmzDateToDosDate(const tm_zip* ptm) |
| 333 { |
| 334 uLong year = (uLong)ptm->tm_year; |
| 335 if (year>=1980) |
| 336 year-=1980; |
| 337 else if (year>=80) |
| 338 year-=80; |
| 339 return |
| 340 (uLong) (((ptm->tm_mday) + (32 * (ptm->tm_mon+1)) + (512 * year)) << 16) | |
| 341 ((ptm->tm_sec/2) + (32* ptm->tm_min) + (2048 * (uLong)ptm->tm_hour)); |
| 342 } |
| 343 |
| 344 |
| 345 /****************************************************************************/ |
| 346 |
| 347 local int zip64local_getByte OF((const zlib_filefunc64_32_def* pzlib_filefunc_de
f, voidpf filestream, int *pi)); |
| 348 |
| 349 local int zip64local_getByte(const zlib_filefunc64_32_def* pzlib_filefunc_def,vo
idpf filestream,int* pi) |
| 350 { |
| 351 unsigned char c; |
| 352 int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,&c,1); |
| 353 if (err==1) |
| 354 { |
| 355 *pi = (int)c; |
| 356 return ZIP_OK; |
| 357 } |
| 358 else |
| 359 { |
| 360 if (ZERROR64(*pzlib_filefunc_def,filestream)) |
| 361 return ZIP_ERRNO; |
| 362 else |
| 363 return ZIP_EOF; |
| 364 } |
| 365 } |
| 366 |
| 367 |
| 368 /* =========================================================================== |
| 369 Reads a long in LSB order from the given gz_stream. Sets |
| 370 */ |
| 371 local int zip64local_getShort OF((const zlib_filefunc64_32_def* pzlib_filefunc_d
ef, voidpf filestream, uLong *pX)); |
| 372 |
| 373 local int zip64local_getShort (const zlib_filefunc64_32_def* pzlib_filefunc_def,
voidpf filestream, uLong* pX) |
| 374 { |
| 375 uLong x ; |
| 376 int i = 0; |
| 377 int err; |
| 378 |
| 379 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 380 x = (uLong)i; |
| 381 |
| 382 if (err==ZIP_OK) |
| 383 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 384 x += ((uLong)i)<<8; |
| 385 |
| 386 if (err==ZIP_OK) |
| 387 *pX = x; |
| 388 else |
| 389 *pX = 0; |
| 390 return err; |
| 391 } |
| 392 |
| 393 local int zip64local_getLong OF((const zlib_filefunc64_32_def* pzlib_filefunc_de
f, voidpf filestream, uLong *pX)); |
| 394 |
| 395 local int zip64local_getLong (const zlib_filefunc64_32_def* pzlib_filefunc_def,
voidpf filestream, uLong* pX) |
| 396 { |
| 397 uLong x ; |
| 398 int i = 0; |
| 399 int err; |
| 400 |
| 401 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 402 x = (uLong)i; |
| 403 |
| 404 if (err==ZIP_OK) |
| 405 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 406 x += ((uLong)i)<<8; |
| 407 |
| 408 if (err==ZIP_OK) |
| 409 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 410 x += ((uLong)i)<<16; |
| 411 |
| 412 if (err==ZIP_OK) |
| 413 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 414 x += ((uLong)i)<<24; |
| 415 |
| 416 if (err==ZIP_OK) |
| 417 *pX = x; |
| 418 else |
| 419 *pX = 0; |
| 420 return err; |
| 421 } |
| 422 |
| 423 local int zip64local_getLong64 OF((const zlib_filefunc64_32_def* pzlib_filefunc_
def, voidpf filestream, ZPOS64_T *pX)); |
| 424 |
| 425 |
| 426 local int zip64local_getLong64 (const zlib_filefunc64_32_def* pzlib_filefunc_def
, voidpf filestream, ZPOS64_T *pX) |
| 427 { |
| 428 ZPOS64_T x; |
| 429 int i = 0; |
| 430 int err; |
| 431 |
| 432 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 433 x = (ZPOS64_T)i; |
| 434 |
| 435 if (err==ZIP_OK) |
| 436 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 437 x += ((ZPOS64_T)i)<<8; |
| 438 |
| 439 if (err==ZIP_OK) |
| 440 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 441 x += ((ZPOS64_T)i)<<16; |
| 442 |
| 443 if (err==ZIP_OK) |
| 444 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 445 x += ((ZPOS64_T)i)<<24; |
| 446 |
| 447 if (err==ZIP_OK) |
| 448 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 449 x += ((ZPOS64_T)i)<<32; |
| 450 |
| 451 if (err==ZIP_OK) |
| 452 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 453 x += ((ZPOS64_T)i)<<40; |
| 454 |
| 455 if (err==ZIP_OK) |
| 456 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 457 x += ((ZPOS64_T)i)<<48; |
| 458 |
| 459 if (err==ZIP_OK) |
| 460 err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 461 x += ((ZPOS64_T)i)<<56; |
| 462 |
| 463 if (err==ZIP_OK) |
| 464 *pX = x; |
| 465 else |
| 466 *pX = 0; |
| 467 |
| 468 return err; |
| 469 } |
| 470 |
| 471 #ifndef BUFREADCOMMENT |
| 472 #define BUFREADCOMMENT (0x400) |
| 473 #endif |
| 474 /* |
| 475 Locate the Central directory of a zipfile (at the end, just before |
| 476 the global comment) |
| 477 */ |
| 478 local ZPOS64_T zip64local_SearchCentralDir OF((const zlib_filefunc64_32_def* pzl
ib_filefunc_def, voidpf filestream)); |
| 479 |
| 480 local ZPOS64_T zip64local_SearchCentralDir(const zlib_filefunc64_32_def* pzlib_f
ilefunc_def, voidpf filestream) |
| 481 { |
| 482 unsigned char* buf; |
| 483 ZPOS64_T uSizeFile; |
| 484 ZPOS64_T uBackRead; |
| 485 ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ |
| 486 ZPOS64_T uPosFound=0; |
| 487 |
| 488 if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) |
| 489 return 0; |
| 490 |
| 491 |
| 492 uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); |
| 493 |
| 494 if (uMaxBack>uSizeFile) |
| 495 uMaxBack = uSizeFile; |
| 496 |
| 497 buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); |
| 498 if (buf==NULL) |
| 499 return 0; |
| 500 |
| 501 uBackRead = 4; |
| 502 while (uBackRead<uMaxBack) |
| 503 { |
| 504 uLong uReadSize; |
| 505 ZPOS64_T uReadPos ; |
| 506 int i; |
| 507 if (uBackRead+BUFREADCOMMENT>uMaxBack) |
| 508 uBackRead = uMaxBack; |
| 509 else |
| 510 uBackRead+=BUFREADCOMMENT; |
| 511 uReadPos = uSizeFile-uBackRead ; |
| 512 |
| 513 uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? |
| 514 (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); |
| 515 if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!
=0) |
| 516 break; |
| 517 |
| 518 if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) |
| 519 break; |
| 520 |
| 521 for (i=(int)uReadSize-3; (i--)>0;) |
| 522 if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && |
| 523 ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06)) |
| 524 { |
| 525 uPosFound = uReadPos+i; |
| 526 break; |
| 527 } |
| 528 |
| 529 if (uPosFound!=0) |
| 530 break; |
| 531 } |
| 532 TRYFREE(buf); |
| 533 return uPosFound; |
| 534 } |
| 535 |
| 536 /* |
| 537 Locate the End of Zip64 Central directory locator and from there find the CD of
a zipfile (at the end, just before |
| 538 the global comment) |
| 539 */ |
| 540 local ZPOS64_T zip64local_SearchCentralDir64 OF((const zlib_filefunc64_32_def* p
zlib_filefunc_def, voidpf filestream)); |
| 541 |
| 542 local ZPOS64_T zip64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib
_filefunc_def, voidpf filestream) |
| 543 { |
| 544 unsigned char* buf; |
| 545 ZPOS64_T uSizeFile; |
| 546 ZPOS64_T uBackRead; |
| 547 ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ |
| 548 ZPOS64_T uPosFound=0; |
| 549 uLong uL; |
| 550 ZPOS64_T relativeOffset; |
| 551 |
| 552 if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) |
| 553 return 0; |
| 554 |
| 555 uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); |
| 556 |
| 557 if (uMaxBack>uSizeFile) |
| 558 uMaxBack = uSizeFile; |
| 559 |
| 560 buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); |
| 561 if (buf==NULL) |
| 562 return 0; |
| 563 |
| 564 uBackRead = 4; |
| 565 while (uBackRead<uMaxBack) |
| 566 { |
| 567 uLong uReadSize; |
| 568 ZPOS64_T uReadPos; |
| 569 int i; |
| 570 if (uBackRead+BUFREADCOMMENT>uMaxBack) |
| 571 uBackRead = uMaxBack; |
| 572 else |
| 573 uBackRead+=BUFREADCOMMENT; |
| 574 uReadPos = uSizeFile-uBackRead ; |
| 575 |
| 576 uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? |
| 577 (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); |
| 578 if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!
=0) |
| 579 break; |
| 580 |
| 581 if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) |
| 582 break; |
| 583 |
| 584 for (i=(int)uReadSize-3; (i--)>0;) |
| 585 { |
| 586 // Signature "0x07064b50" Zip64 end of central directory locater |
| 587 if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && ((*(buf+i+2))==0x06) &&
((*(buf+i+3))==0x07)) |
| 588 { |
| 589 uPosFound = uReadPos+i; |
| 590 break; |
| 591 } |
| 592 } |
| 593 |
| 594 if (uPosFound!=0) |
| 595 break; |
| 596 } |
| 597 |
| 598 TRYFREE(buf); |
| 599 if (uPosFound == 0) |
| 600 return 0; |
| 601 |
| 602 /* Zip64 end of central directory locator */ |
| 603 if (ZSEEK64(*pzlib_filefunc_def,filestream, uPosFound,ZLIB_FILEFUNC_SEEK_SET)!
=0) |
| 604 return 0; |
| 605 |
| 606 /* the signature, already checked */ |
| 607 if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK) |
| 608 return 0; |
| 609 |
| 610 /* number of the disk with the start of the zip64 end of central directory */ |
| 611 if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK) |
| 612 return 0; |
| 613 if (uL != 0) |
| 614 return 0; |
| 615 |
| 616 /* relative offset of the zip64 end of central directory record */ |
| 617 if (zip64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=ZIP_O
K) |
| 618 return 0; |
| 619 |
| 620 /* total number of disks */ |
| 621 if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK) |
| 622 return 0; |
| 623 if (uL != 1) |
| 624 return 0; |
| 625 |
| 626 /* Goto Zip64 end of central directory record */ |
| 627 if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_
SET)!=0) |
| 628 return 0; |
| 629 |
| 630 /* the signature */ |
| 631 if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK) |
| 632 return 0; |
| 633 |
| 634 if (uL != 0x06064b50) // signature of 'Zip64 end of central directory' |
| 635 return 0; |
| 636 |
| 637 return relativeOffset; |
| 638 } |
| 639 |
| 640 int LoadCentralDirectoryRecord(zip64_internal* pziinit) |
| 641 { |
| 642 int err=ZIP_OK; |
| 643 ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ |
| 644 |
| 645 ZPOS64_T size_central_dir; /* size of the central directory */ |
| 646 ZPOS64_T offset_central_dir; /* offset of start of central directory */ |
| 647 ZPOS64_T central_pos; |
| 648 uLong uL; |
| 649 |
| 650 uLong number_disk; /* number of the current dist, used for |
| 651 spaning ZIP, unsupported, always 0*/ |
| 652 uLong number_disk_with_CD; /* number the the disk with central dir, used |
| 653 for spaning ZIP, unsupported, always 0*/ |
| 654 ZPOS64_T number_entry; |
| 655 ZPOS64_T number_entry_CD; /* total number of entries in |
| 656 the central dir |
| 657 (same than number_entry on nospan) */ |
| 658 uLong VersionMadeBy; |
| 659 uLong VersionNeeded; |
| 660 uLong size_comment; |
| 661 |
| 662 int hasZIP64Record = 0; |
| 663 |
| 664 // check first if we find a ZIP64 record |
| 665 central_pos = zip64local_SearchCentralDir64(&pziinit->z_filefunc,pziinit->file
stream); |
| 666 if(central_pos > 0) |
| 667 { |
| 668 hasZIP64Record = 1; |
| 669 } |
| 670 else if(central_pos == 0) |
| 671 { |
| 672 central_pos = zip64local_SearchCentralDir(&pziinit->z_filefunc,pziinit->file
stream); |
| 673 } |
| 674 |
| 675 /* disable to allow appending to empty ZIP archive |
| 676 if (central_pos==0) |
| 677 err=ZIP_ERRNO; |
| 678 */ |
| 679 |
| 680 if(hasZIP64Record) |
| 681 { |
| 682 ZPOS64_T sizeEndOfCentralDirectory; |
| 683 if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, central_pos, ZLIB_FILE
FUNC_SEEK_SET) != 0) |
| 684 err=ZIP_ERRNO; |
| 685 |
| 686 /* the signature, already checked */ |
| 687 if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&uL)!=ZIP_O
K) |
| 688 err=ZIP_ERRNO; |
| 689 |
| 690 /* size of zip64 end of central directory record */ |
| 691 if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream, &sizeEnd
OfCentralDirectory)!=ZIP_OK) |
| 692 err=ZIP_ERRNO; |
| 693 |
| 694 /* version made by */ |
| 695 if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &VersionM
adeBy)!=ZIP_OK) |
| 696 err=ZIP_ERRNO; |
| 697 |
| 698 /* version needed to extract */ |
| 699 if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &VersionN
eeded)!=ZIP_OK) |
| 700 err=ZIP_ERRNO; |
| 701 |
| 702 /* number of this disk */ |
| 703 if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&number_dis
k)!=ZIP_OK) |
| 704 err=ZIP_ERRNO; |
| 705 |
| 706 /* number of the disk with the start of the central directory */ |
| 707 if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&number_dis
k_with_CD)!=ZIP_OK) |
| 708 err=ZIP_ERRNO; |
| 709 |
| 710 /* total number of entries in the central directory on this disk */ |
| 711 if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream, &number_
entry)!=ZIP_OK) |
| 712 err=ZIP_ERRNO; |
| 713 |
| 714 /* total number of entries in the central directory */ |
| 715 if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&number_e
ntry_CD)!=ZIP_OK) |
| 716 err=ZIP_ERRNO; |
| 717 |
| 718 if ((number_entry_CD!=number_entry) || (number_disk_with_CD!=0) || (number_d
isk!=0)) |
| 719 err=ZIP_BADZIPFILE; |
| 720 |
| 721 /* size of the central directory */ |
| 722 if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&size_cen
tral_dir)!=ZIP_OK) |
| 723 err=ZIP_ERRNO; |
| 724 |
| 725 /* offset of start of central directory with respect to the |
| 726 starting disk number */ |
| 727 if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&offset_c
entral_dir)!=ZIP_OK) |
| 728 err=ZIP_ERRNO; |
| 729 |
| 730 // TODO.. |
| 731 // read the comment from the standard central header. |
| 732 size_comment = 0; |
| 733 } |
| 734 else |
| 735 { |
| 736 // Read End of central Directory info |
| 737 if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, central_pos,ZLIB_FILEF
UNC_SEEK_SET)!=0) |
| 738 err=ZIP_ERRNO; |
| 739 |
| 740 /* the signature, already checked */ |
| 741 if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&uL)!=ZIP_O
K) |
| 742 err=ZIP_ERRNO; |
| 743 |
| 744 /* number of this disk */ |
| 745 if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream,&number_di
sk)!=ZIP_OK) |
| 746 err=ZIP_ERRNO; |
| 747 |
| 748 /* number of the disk with the start of the central directory */ |
| 749 if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream,&number_di
sk_with_CD)!=ZIP_OK) |
| 750 err=ZIP_ERRNO; |
| 751 |
| 752 /* total number of entries in the central dir on this disk */ |
| 753 number_entry = 0; |
| 754 if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP
_OK) |
| 755 err=ZIP_ERRNO; |
| 756 else |
| 757 number_entry = uL; |
| 758 |
| 759 /* total number of entries in the central dir */ |
| 760 number_entry_CD = 0; |
| 761 if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP
_OK) |
| 762 err=ZIP_ERRNO; |
| 763 else |
| 764 number_entry_CD = uL; |
| 765 |
| 766 if ((number_entry_CD!=number_entry) || (number_disk_with_CD!=0) || (number_d
isk!=0)) |
| 767 err=ZIP_BADZIPFILE; |
| 768 |
| 769 /* size of the central directory */ |
| 770 size_central_dir = 0; |
| 771 if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_
OK) |
| 772 err=ZIP_ERRNO; |
| 773 else |
| 774 size_central_dir = uL; |
| 775 |
| 776 /* offset of start of central directory with respect to the starting disk nu
mber */ |
| 777 offset_central_dir = 0; |
| 778 if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_
OK) |
| 779 err=ZIP_ERRNO; |
| 780 else |
| 781 offset_central_dir = uL; |
| 782 |
| 783 |
| 784 /* zipfile global comment length */ |
| 785 if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &size_com
ment)!=ZIP_OK) |
| 786 err=ZIP_ERRNO; |
| 787 } |
| 788 |
| 789 if ((central_pos<offset_central_dir+size_central_dir) && |
| 790 (err==ZIP_OK)) |
| 791 err=ZIP_BADZIPFILE; |
| 792 |
| 793 if (err!=ZIP_OK) |
| 794 { |
| 795 ZCLOSE64(pziinit->z_filefunc, pziinit->filestream); |
| 796 return ZIP_ERRNO; |
| 797 } |
| 798 |
| 799 if (size_comment>0) |
| 800 { |
| 801 pziinit->globalcomment = (char*)ALLOC(size_comment+1); |
| 802 if (pziinit->globalcomment) |
| 803 { |
| 804 size_comment = ZREAD64(pziinit->z_filefunc, pziinit->filestream, pziinit->
globalcomment,size_comment); |
| 805 pziinit->globalcomment[size_comment]=0; |
| 806 } |
| 807 } |
| 808 |
| 809 byte_before_the_zipfile = central_pos - (offset_central_dir+size_central_dir); |
| 810 pziinit->add_position_when_writting_offset = byte_before_the_zipfile; |
| 811 |
| 812 { |
| 813 ZPOS64_T size_central_dir_to_read = size_central_dir; |
| 814 size_t buf_size = SIZEDATA_INDATABLOCK; |
| 815 void* buf_read = (void*)ALLOC(buf_size); |
| 816 if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, offset_central_dir + b
yte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0) |
| 817 err=ZIP_ERRNO; |
| 818 |
| 819 while ((size_central_dir_to_read>0) && (err==ZIP_OK)) |
| 820 { |
| 821 ZPOS64_T read_this = SIZEDATA_INDATABLOCK; |
| 822 if (read_this > size_central_dir_to_read) |
| 823 read_this = size_central_dir_to_read; |
| 824 |
| 825 if (ZREAD64(pziinit->z_filefunc, pziinit->filestream,buf_read,(uLong)read_
this) != read_this) |
| 826 err=ZIP_ERRNO; |
| 827 |
| 828 if (err==ZIP_OK) |
| 829 err = add_data_in_datablock(&pziinit->central_dir,buf_read, (uLong)read_
this); |
| 830 |
| 831 size_central_dir_to_read-=read_this; |
| 832 } |
| 833 TRYFREE(buf_read); |
| 834 } |
| 835 pziinit->begin_pos = byte_before_the_zipfile; |
| 836 pziinit->number_entry = number_entry_CD; |
| 837 |
| 838 if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, offset_central_dir+byte_
before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET) != 0) |
| 839 err=ZIP_ERRNO; |
| 840 |
| 841 return err; |
| 842 } |
| 843 |
| 844 |
| 845 #endif /* !NO_ADDFILEINEXISTINGZIP*/ |
| 846 |
| 847 |
| 848 /************************************************************/ |
| 849 extern zipFile ZEXPORT zipOpen3 (const void *pathname, int append, zipcharpc* gl
obalcomment, zlib_filefunc64_32_def* pzlib_filefunc64_32_def) |
| 850 { |
| 851 zip64_internal ziinit; |
| 852 zip64_internal* zi; |
| 853 int err=ZIP_OK; |
| 854 |
| 855 ziinit.z_filefunc.zseek32_file = NULL; |
| 856 ziinit.z_filefunc.ztell32_file = NULL; |
| 857 if (pzlib_filefunc64_32_def==NULL) |
| 858 fill_fopen64_filefunc(&ziinit.z_filefunc.zfile_func64); |
| 859 else |
| 860 ziinit.z_filefunc = *pzlib_filefunc64_32_def; |
| 861 |
| 862 ziinit.filestream = ZOPEN64(ziinit.z_filefunc, |
| 863 pathname, |
| 864 (append == APPEND_STATUS_CREATE) ? |
| 865 (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FIL
EFUNC_MODE_CREATE) : |
| 866 (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_F
ILEFUNC_MODE_EXISTING)); |
| 867 |
| 868 if (ziinit.filestream == NULL) |
| 869 return NULL; |
| 870 |
| 871 if (append == APPEND_STATUS_CREATEAFTER) |
| 872 ZSEEK64(ziinit.z_filefunc,ziinit.filestream,0,SEEK_END); |
| 873 |
| 874 ziinit.begin_pos = ZTELL64(ziinit.z_filefunc,ziinit.filestream); |
| 875 ziinit.in_opened_file_inzip = 0; |
| 876 ziinit.ci.stream_initialised = 0; |
| 877 ziinit.number_entry = 0; |
| 878 ziinit.add_position_when_writting_offset = 0; |
| 879 init_linkedlist(&(ziinit.central_dir)); |
| 880 |
| 881 |
| 882 |
| 883 zi = (zip64_internal*)ALLOC(sizeof(zip64_internal)); |
| 884 if (zi==NULL) |
| 885 { |
| 886 ZCLOSE64(ziinit.z_filefunc,ziinit.filestream); |
| 887 return NULL; |
| 888 } |
| 889 |
| 890 /* now we add file in a zipfile */ |
| 891 # ifndef NO_ADDFILEINEXISTINGZIP |
| 892 ziinit.globalcomment = NULL; |
| 893 if (append == APPEND_STATUS_ADDINZIP) |
| 894 { |
| 895 // Read and Cache Central Directory Records |
| 896 err = LoadCentralDirectoryRecord(&ziinit); |
| 897 } |
| 898 |
| 899 if (globalcomment) |
| 900 { |
| 901 *globalcomment = ziinit.globalcomment; |
| 902 } |
| 903 # endif /* !NO_ADDFILEINEXISTINGZIP*/ |
| 904 |
| 905 if (err != ZIP_OK) |
| 906 { |
| 907 # ifndef NO_ADDFILEINEXISTINGZIP |
| 908 TRYFREE(ziinit.globalcomment); |
| 909 # endif /* !NO_ADDFILEINEXISTINGZIP*/ |
| 910 TRYFREE(zi); |
| 911 return NULL; |
| 912 } |
| 913 else |
| 914 { |
| 915 *zi = ziinit; |
| 916 return (zipFile)zi; |
| 917 } |
| 918 } |
| 919 |
| 920 extern zipFile ZEXPORT zipOpen2 (const char *pathname, int append, zipcharpc* gl
obalcomment, zlib_filefunc_def* pzlib_filefunc32_def) |
| 921 { |
| 922 if (pzlib_filefunc32_def != NULL) |
| 923 { |
| 924 zlib_filefunc64_32_def zlib_filefunc64_32_def_fill; |
| 925 fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill
,pzlib_filefunc32_def); |
| 926 return zipOpen3(pathname, append, globalcomment, &zlib_filefunc64_32_def
_fill); |
| 927 } |
| 928 else |
| 929 return zipOpen3(pathname, append, globalcomment, NULL); |
| 930 } |
| 931 |
| 932 extern zipFile ZEXPORT zipOpen2_64 (const void *pathname, int append, zipcharpc*
globalcomment, zlib_filefunc64_def* pzlib_filefunc_def) |
| 933 { |
| 934 if (pzlib_filefunc_def != NULL) |
| 935 { |
| 936 zlib_filefunc64_32_def zlib_filefunc64_32_def_fill; |
| 937 zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def; |
| 938 zlib_filefunc64_32_def_fill.ztell32_file = NULL; |
| 939 zlib_filefunc64_32_def_fill.zseek32_file = NULL; |
| 940 return zipOpen3(pathname, append, globalcomment, &zlib_filefunc64_32_def
_fill); |
| 941 } |
| 942 else |
| 943 return zipOpen3(pathname, append, globalcomment, NULL); |
| 944 } |
| 945 |
| 946 |
| 947 |
| 948 extern zipFile ZEXPORT zipOpen (const char* pathname, int append) |
| 949 { |
| 950 return zipOpen3((const void*)pathname,append,NULL,NULL); |
| 951 } |
| 952 |
| 953 extern zipFile ZEXPORT zipOpen64 (const void* pathname, int append) |
| 954 { |
| 955 return zipOpen3(pathname,append,NULL,NULL); |
| 956 } |
| 957 |
| 958 int Write_LocalFileHeader(zip64_internal* zi, const char* filename, uInt size_ex
trafield_local, const void* extrafield_local) |
| 959 { |
| 960 /* write the local header */ |
| 961 int err; |
| 962 uInt size_filename = (uInt)strlen(filename); |
| 963 uInt size_extrafield = size_extrafield_local; |
| 964 |
| 965 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)LOCALHEADERMAG
IC, 4); |
| 966 |
| 967 if (err==ZIP_OK) |
| 968 { |
| 969 if(zi->ci.zip64) |
| 970 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2);/* v
ersion needed to extract */ |
| 971 else |
| 972 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)20,2);/* v
ersion needed to extract */ |
| 973 } |
| 974 |
| 975 if (err==ZIP_OK) |
| 976 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.flag,
2); |
| 977 |
| 978 if (err==ZIP_OK) |
| 979 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.metho
d,2); |
| 980 |
| 981 if (err==ZIP_OK) |
| 982 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.dosDa
te,4); |
| 983 |
| 984 // CRC / Compressed size / Uncompressed size will be filled in later and rewri
tten later |
| 985 if (err==ZIP_OK) |
| 986 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* crc
32, unknown */ |
| 987 if (err==ZIP_OK) |
| 988 { |
| 989 if(zi->ci.zip64) |
| 990 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xFFFFFFFF
,4); /* compressed size, unknown */ |
| 991 else |
| 992 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* c
ompressed size, unknown */ |
| 993 } |
| 994 if (err==ZIP_OK) |
| 995 { |
| 996 if(zi->ci.zip64) |
| 997 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xFFFFFFFF
,4); /* uncompressed size, unknown */ |
| 998 else |
| 999 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* u
ncompressed size, unknown */ |
| 1000 } |
| 1001 |
| 1002 if (err==ZIP_OK) |
| 1003 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_filenam
e,2); |
| 1004 |
| 1005 if(zi->ci.zip64) |
| 1006 { |
| 1007 size_extrafield += 20; |
| 1008 } |
| 1009 |
| 1010 if (err==ZIP_OK) |
| 1011 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_extrafi
eld,2); |
| 1012 |
| 1013 if ((err==ZIP_OK) && (size_filename > 0)) |
| 1014 { |
| 1015 if (ZWRITE64(zi->z_filefunc,zi->filestream,filename,size_filename)!=size_fil
ename) |
| 1016 err = ZIP_ERRNO; |
| 1017 } |
| 1018 |
| 1019 if ((err==ZIP_OK) && (size_extrafield_local > 0)) |
| 1020 { |
| 1021 if (ZWRITE64(zi->z_filefunc, zi->filestream, extrafield_local, size_extrafie
ld_local) != size_extrafield_local) |
| 1022 err = ZIP_ERRNO; |
| 1023 } |
| 1024 |
| 1025 |
| 1026 if ((err==ZIP_OK) && (zi->ci.zip64)) |
| 1027 { |
| 1028 // write the Zip64 extended info |
| 1029 short HeaderID = 1; |
| 1030 short DataSize = 16; |
| 1031 ZPOS64_T CompressedSize = 0; |
| 1032 ZPOS64_T UncompressedSize = 0; |
| 1033 |
| 1034 // Remember position of Zip64 extended info for the local file header. (ne
eded when we update size after done with file) |
| 1035 zi->ci.pos_zip64extrainfo = ZTELL64(zi->z_filefunc,zi->filestream); |
| 1036 |
| 1037 err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (short)HeaderID
,2); |
| 1038 err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (short)DataSize
,2); |
| 1039 |
| 1040 err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)Uncom
pressedSize,8); |
| 1041 err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)Compr
essedSize,8); |
| 1042 } |
| 1043 |
| 1044 return err; |
| 1045 } |
| 1046 |
| 1047 /* |
| 1048 NOTE. |
| 1049 When writing RAW the ZIP64 extended information in extrafield_local and extrafi
eld_global needs to be stripped |
| 1050 before calling this function it can be done with zipRemoveExtraInfoBlock |
| 1051 |
| 1052 It is not done here because then we need to realloc a new buffer since paramete
rs are 'const' and I want to minimize |
| 1053 unnecessary allocations. |
| 1054 */ |
| 1055 extern int ZEXPORT zipOpenNewFileInZip4_64 (zipFile file, const char* filename,
const zip_fileinfo* zipfi, |
| 1056 const void* extrafield_local, uInt size
_extrafield_local, |
| 1057 const void* extrafield_global, uInt siz
e_extrafield_global, |
| 1058 const char* comment, int method, int le
vel, int raw, |
| 1059 int windowBits,int memLevel, int strate
gy, |
| 1060 const char* password, uLong crcForCrypt
ing, |
| 1061 uLong versionMadeBy, uLong flagBase, in
t zip64) |
| 1062 { |
| 1063 zip64_internal* zi; |
| 1064 uInt size_filename; |
| 1065 uInt size_comment; |
| 1066 uInt i; |
| 1067 int err = ZIP_OK; |
| 1068 |
| 1069 # ifdef NOCRYPT |
| 1070 if (password != NULL) |
| 1071 return ZIP_PARAMERROR; |
| 1072 # endif |
| 1073 |
| 1074 if (file == NULL) |
| 1075 return ZIP_PARAMERROR; |
| 1076 |
| 1077 #ifdef HAVE_BZIP2 |
| 1078 if ((method!=0) && (method!=Z_DEFLATED) && (method!=Z_BZIP2ED)) |
| 1079 return ZIP_PARAMERROR; |
| 1080 #else |
| 1081 if ((method!=0) && (method!=Z_DEFLATED)) |
| 1082 return ZIP_PARAMERROR; |
| 1083 #endif |
| 1084 |
| 1085 zi = (zip64_internal*)file; |
| 1086 |
| 1087 if (zi->in_opened_file_inzip == 1) |
| 1088 { |
| 1089 err = zipCloseFileInZip (file); |
| 1090 if (err != ZIP_OK) |
| 1091 return err; |
| 1092 } |
| 1093 |
| 1094 if (filename==NULL) |
| 1095 filename="-"; |
| 1096 |
| 1097 if (comment==NULL) |
| 1098 size_comment = 0; |
| 1099 else |
| 1100 size_comment = (uInt)strlen(comment); |
| 1101 |
| 1102 size_filename = (uInt)strlen(filename); |
| 1103 |
| 1104 if (zipfi == NULL) |
| 1105 zi->ci.dosDate = 0; |
| 1106 else |
| 1107 { |
| 1108 if (zipfi->dosDate != 0) |
| 1109 zi->ci.dosDate = zipfi->dosDate; |
| 1110 else |
| 1111 zi->ci.dosDate = zip64local_TmzDateToDosDate(&zipfi->tmz_date); |
| 1112 } |
| 1113 |
| 1114 zi->ci.flag = flagBase; |
| 1115 if ((level==8) || (level==9)) |
| 1116 zi->ci.flag |= 2; |
| 1117 if ((level==2)) |
| 1118 zi->ci.flag |= 4; |
| 1119 if ((level==1)) |
| 1120 zi->ci.flag |= 6; |
| 1121 if (password != NULL) |
| 1122 zi->ci.flag |= 1; |
| 1123 |
| 1124 zi->ci.crc32 = 0; |
| 1125 zi->ci.method = method; |
| 1126 zi->ci.encrypt = 0; |
| 1127 zi->ci.stream_initialised = 0; |
| 1128 zi->ci.pos_in_buffered_data = 0; |
| 1129 zi->ci.raw = raw; |
| 1130 zi->ci.pos_local_header = ZTELL64(zi->z_filefunc,zi->filestream); |
| 1131 |
| 1132 zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename + size_extrafi
eld_global + size_comment; |
| 1133 zi->ci.size_centralExtraFree = 32; // Extra space we have reserved in case w
e need to add ZIP64 extra info data |
| 1134 |
| 1135 zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader + zi->c
i.size_centralExtraFree); |
| 1136 |
| 1137 zi->ci.size_centralExtra = size_extrafield_global; |
| 1138 zip64local_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC
,4); |
| 1139 /* version info */ |
| 1140 zip64local_putValue_inmemory(zi->ci.central_header+4,(uLong)versionMadeBy,2)
; |
| 1141 zip64local_putValue_inmemory(zi->ci.central_header+6,(uLong)20,2); |
| 1142 zip64local_putValue_inmemory(zi->ci.central_header+8,(uLong)zi->ci.flag,2); |
| 1143 zip64local_putValue_inmemory(zi->ci.central_header+10,(uLong)zi->ci.method,2
); |
| 1144 zip64local_putValue_inmemory(zi->ci.central_header+12,(uLong)zi->ci.dosDate,
4); |
| 1145 zip64local_putValue_inmemory(zi->ci.central_header+16,(uLong)0,4); /*crc*/ |
| 1146 zip64local_putValue_inmemory(zi->ci.central_header+20,(uLong)0,4); /*compr s
ize*/ |
| 1147 zip64local_putValue_inmemory(zi->ci.central_header+24,(uLong)0,4); /*uncompr
size*/ |
| 1148 zip64local_putValue_inmemory(zi->ci.central_header+28,(uLong)size_filename,2
); |
| 1149 zip64local_putValue_inmemory(zi->ci.central_header+30,(uLong)size_extrafield
_global,2); |
| 1150 zip64local_putValue_inmemory(zi->ci.central_header+32,(uLong)size_comment,2)
; |
| 1151 zip64local_putValue_inmemory(zi->ci.central_header+34,(uLong)0,2); /*disk nm
start*/ |
| 1152 |
| 1153 if (zipfi==NULL) |
| 1154 zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)0,2); |
| 1155 else |
| 1156 zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)zipfi->inte
rnal_fa,2); |
| 1157 |
| 1158 if (zipfi==NULL) |
| 1159 zip64local_putValue_inmemory(zi->ci.central_header+38,(uLong)0,4); |
| 1160 else |
| 1161 zip64local_putValue_inmemory(zi->ci.central_header+38,(uLong)zipfi->exte
rnal_fa,4); |
| 1162 |
| 1163 if(zi->ci.pos_local_header >= 0xffffffff) |
| 1164 zip64local_putValue_inmemory(zi->ci.central_header+42,(uLong)0xffffffff,4)
; |
| 1165 else |
| 1166 zip64local_putValue_inmemory(zi->ci.central_header+42,(uLong)zi->ci.pos_lo
cal_header - zi->add_position_when_writting_offset,4); |
| 1167 |
| 1168 for (i=0;i<size_filename;i++) |
| 1169 *(zi->ci.central_header+SIZECENTRALHEADER+i) = *(filename+i); |
| 1170 |
| 1171 for (i=0;i<size_extrafield_global;i++) |
| 1172 *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+i) = |
| 1173 *(((const char*)extrafield_global)+i); |
| 1174 |
| 1175 for (i=0;i<size_comment;i++) |
| 1176 *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+ |
| 1177 size_extrafield_global+i) = *(comment+i); |
| 1178 if (zi->ci.central_header == NULL) |
| 1179 return ZIP_INTERNALERROR; |
| 1180 |
| 1181 zi->ci.zip64 = zip64; |
| 1182 zi->ci.totalCompressedData = 0; |
| 1183 zi->ci.totalUncompressedData = 0; |
| 1184 zi->ci.pos_zip64extrainfo = 0; |
| 1185 |
| 1186 err = Write_LocalFileHeader(zi, filename, size_extrafield_local, extrafield_
local); |
| 1187 |
| 1188 #ifdef HAVE_BZIP2 |
| 1189 zi->ci.bstream.avail_in = (uInt)0; |
| 1190 zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE; |
| 1191 zi->ci.bstream.next_out = (char*)zi->ci.buffered_data; |
| 1192 zi->ci.bstream.total_in_hi32 = 0; |
| 1193 zi->ci.bstream.total_in_lo32 = 0; |
| 1194 zi->ci.bstream.total_out_hi32 = 0; |
| 1195 zi->ci.bstream.total_out_lo32 = 0; |
| 1196 #endif |
| 1197 |
| 1198 zi->ci.stream.avail_in = (uInt)0; |
| 1199 zi->ci.stream.avail_out = (uInt)Z_BUFSIZE; |
| 1200 zi->ci.stream.next_out = zi->ci.buffered_data; |
| 1201 zi->ci.stream.total_in = 0; |
| 1202 zi->ci.stream.total_out = 0; |
| 1203 zi->ci.stream.data_type = Z_BINARY; |
| 1204 |
| 1205 #ifdef HAVE_BZIP2 |
| 1206 if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED || zi->ci.method == Z_BZIP
2ED) && (!zi->ci.raw)) |
| 1207 #else |
| 1208 if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED) && (!zi->ci.raw)) |
| 1209 #endif |
| 1210 { |
| 1211 if(zi->ci.method == Z_DEFLATED) |
| 1212 { |
| 1213 zi->ci.stream.zalloc = (alloc_func)0; |
| 1214 zi->ci.stream.zfree = (free_func)0; |
| 1215 zi->ci.stream.opaque = (voidpf)0; |
| 1216 |
| 1217 if (windowBits>0) |
| 1218 windowBits = -windowBits; |
| 1219 |
| 1220 err = deflateInit2(&zi->ci.stream, level, Z_DEFLATED, windowBits, memL
evel, strategy); |
| 1221 |
| 1222 if (err==Z_OK) |
| 1223 zi->ci.stream_initialised = Z_DEFLATED; |
| 1224 } |
| 1225 else if(zi->ci.method == Z_BZIP2ED) |
| 1226 { |
| 1227 #ifdef HAVE_BZIP2 |
| 1228 // Init BZip stuff here |
| 1229 zi->ci.bstream.bzalloc = 0; |
| 1230 zi->ci.bstream.bzfree = 0; |
| 1231 zi->ci.bstream.opaque = (voidpf)0; |
| 1232 |
| 1233 err = BZ2_bzCompressInit(&zi->ci.bstream, level, 0,35); |
| 1234 if(err == BZ_OK) |
| 1235 zi->ci.stream_initialised = Z_BZIP2ED; |
| 1236 #endif |
| 1237 } |
| 1238 |
| 1239 } |
| 1240 |
| 1241 # ifndef NOCRYPT |
| 1242 zi->ci.crypt_header_size = 0; |
| 1243 if ((err==Z_OK) && (password != NULL)) |
| 1244 { |
| 1245 unsigned char bufHead[RAND_HEAD_LEN]; |
| 1246 unsigned int sizeHead; |
| 1247 zi->ci.encrypt = 1; |
| 1248 zi->ci.pcrc_32_tab = get_crc_table(); |
| 1249 /*init_keys(password,zi->ci.keys,zi->ci.pcrc_32_tab);*/ |
| 1250 |
| 1251 sizeHead=crypthead(password,bufHead,RAND_HEAD_LEN,zi->ci.keys,zi->ci.pcr
c_32_tab,crcForCrypting); |
| 1252 zi->ci.crypt_header_size = sizeHead; |
| 1253 |
| 1254 if (ZWRITE64(zi->z_filefunc,zi->filestream,bufHead,sizeHead) != sizeHead
) |
| 1255 err = ZIP_ERRNO; |
| 1256 } |
| 1257 # endif |
| 1258 |
| 1259 if (err==Z_OK) |
| 1260 zi->in_opened_file_inzip = 1; |
| 1261 return err; |
| 1262 } |
| 1263 |
| 1264 extern int ZEXPORT zipOpenNewFileInZip4 (zipFile file, const char* filename, con
st zip_fileinfo* zipfi, |
| 1265 const void* extrafield_local, uInt size
_extrafield_local, |
| 1266 const void* extrafield_global, uInt siz
e_extrafield_global, |
| 1267 const char* comment, int method, int le
vel, int raw, |
| 1268 int windowBits,int memLevel, int strate
gy, |
| 1269 const char* password, uLong crcForCrypt
ing, |
| 1270 uLong versionMadeBy, uLong flagBase) |
| 1271 { |
| 1272 return zipOpenNewFileInZip4_64 (file, filename, zipfi, |
| 1273 extrafield_local, size_extrafield_local, |
| 1274 extrafield_global, size_extrafield_global, |
| 1275 comment, method, level, raw, |
| 1276 windowBits, memLevel, strategy, |
| 1277 password, crcForCrypting, versionMadeBy, flagBa
se, 0); |
| 1278 } |
| 1279 |
| 1280 extern int ZEXPORT zipOpenNewFileInZip3 (zipFile file, const char* filename, con
st zip_fileinfo* zipfi, |
| 1281 const void* extrafield_local, uInt size
_extrafield_local, |
| 1282 const void* extrafield_global, uInt siz
e_extrafield_global, |
| 1283 const char* comment, int method, int le
vel, int raw, |
| 1284 int windowBits,int memLevel, int strate
gy, |
| 1285 const char* password, uLong crcForCrypt
ing) |
| 1286 { |
| 1287 return zipOpenNewFileInZip4_64 (file, filename, zipfi, |
| 1288 extrafield_local, size_extrafield_local, |
| 1289 extrafield_global, size_extrafield_global, |
| 1290 comment, method, level, raw, |
| 1291 windowBits, memLevel, strategy, |
| 1292 password, crcForCrypting, VERSIONMADEBY, 0, 0); |
| 1293 } |
| 1294 |
| 1295 extern int ZEXPORT zipOpenNewFileInZip3_64(zipFile file, const char* filename, c
onst zip_fileinfo* zipfi, |
| 1296 const void* extrafield_local, uInt size
_extrafield_local, |
| 1297 const void* extrafield_global, uInt siz
e_extrafield_global, |
| 1298 const char* comment, int method, int le
vel, int raw, |
| 1299 int windowBits,int memLevel, int strate
gy, |
| 1300 const char* password, uLong crcForCrypt
ing, int zip64) |
| 1301 { |
| 1302 return zipOpenNewFileInZip4_64 (file, filename, zipfi, |
| 1303 extrafield_local, size_extrafield_local, |
| 1304 extrafield_global, size_extrafield_global, |
| 1305 comment, method, level, raw, |
| 1306 windowBits, memLevel, strategy, |
| 1307 password, crcForCrypting, VERSIONMADEBY, 0, zip
64); |
| 1308 } |
| 1309 |
| 1310 extern int ZEXPORT zipOpenNewFileInZip2(zipFile file, const char* filename, cons
t zip_fileinfo* zipfi, |
| 1311 const void* extrafield_local, uInt size_
extrafield_local, |
| 1312 const void* extrafield_global, uInt size
_extrafield_global, |
| 1313 const char* comment, int method, int lev
el, int raw) |
| 1314 { |
| 1315 return zipOpenNewFileInZip4_64 (file, filename, zipfi, |
| 1316 extrafield_local, size_extrafield_local, |
| 1317 extrafield_global, size_extrafield_global, |
| 1318 comment, method, level, raw, |
| 1319 -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, |
| 1320 NULL, 0, VERSIONMADEBY, 0, 0); |
| 1321 } |
| 1322 |
| 1323 extern int ZEXPORT zipOpenNewFileInZip2_64(zipFile file, const char* filename, c
onst zip_fileinfo* zipfi, |
| 1324 const void* extrafield_local, uInt size_
extrafield_local, |
| 1325 const void* extrafield_global, uInt size
_extrafield_global, |
| 1326 const char* comment, int method, int lev
el, int raw, int zip64) |
| 1327 { |
| 1328 return zipOpenNewFileInZip4_64 (file, filename, zipfi, |
| 1329 extrafield_local, size_extrafield_local, |
| 1330 extrafield_global, size_extrafield_global, |
| 1331 comment, method, level, raw, |
| 1332 -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, |
| 1333 NULL, 0, VERSIONMADEBY, 0, zip64); |
| 1334 } |
| 1335 |
| 1336 extern int ZEXPORT zipOpenNewFileInZip64 (zipFile file, const char* filename, co
nst zip_fileinfo* zipfi, |
| 1337 const void* extrafield_local, uInt size_
extrafield_local, |
| 1338 const void*extrafield_global, uInt size_
extrafield_global, |
| 1339 const char* comment, int method, int lev
el, int zip64) |
| 1340 { |
| 1341 return zipOpenNewFileInZip4_64 (file, filename, zipfi, |
| 1342 extrafield_local, size_extrafield_local, |
| 1343 extrafield_global, size_extrafield_global, |
| 1344 comment, method, level, 0, |
| 1345 -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, |
| 1346 NULL, 0, VERSIONMADEBY, 0, zip64); |
| 1347 } |
| 1348 |
| 1349 extern int ZEXPORT zipOpenNewFileInZip (zipFile file, const char* filename, cons
t zip_fileinfo* zipfi, |
| 1350 const void* extrafield_local, uInt size_
extrafield_local, |
| 1351 const void*extrafield_global, uInt size_
extrafield_global, |
| 1352 const char* comment, int method, int lev
el) |
| 1353 { |
| 1354 return zipOpenNewFileInZip4_64 (file, filename, zipfi, |
| 1355 extrafield_local, size_extrafield_local, |
| 1356 extrafield_global, size_extrafield_global, |
| 1357 comment, method, level, 0, |
| 1358 -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, |
| 1359 NULL, 0, VERSIONMADEBY, 0, 0); |
| 1360 } |
| 1361 |
| 1362 local int zip64FlushWriteBuffer(zip64_internal* zi) |
| 1363 { |
| 1364 int err=ZIP_OK; |
| 1365 |
| 1366 if (zi->ci.encrypt != 0) |
| 1367 { |
| 1368 #ifndef NOCRYPT |
| 1369 uInt i; |
| 1370 int t; |
| 1371 for (i=0;i<zi->ci.pos_in_buffered_data;i++) |
| 1372 zi->ci.buffered_data[i] = zencode(zi->ci.keys, zi->ci.pcrc_32_tab, z
i->ci.buffered_data[i],t); |
| 1373 #endif |
| 1374 } |
| 1375 |
| 1376 if (ZWRITE64(zi->z_filefunc,zi->filestream,zi->ci.buffered_data,zi->ci.pos_i
n_buffered_data) != zi->ci.pos_in_buffered_data) |
| 1377 err = ZIP_ERRNO; |
| 1378 |
| 1379 zi->ci.totalCompressedData += zi->ci.pos_in_buffered_data; |
| 1380 |
| 1381 #ifdef HAVE_BZIP2 |
| 1382 if(zi->ci.method == Z_BZIP2ED) |
| 1383 { |
| 1384 zi->ci.totalUncompressedData += zi->ci.bstream.total_in_lo32; |
| 1385 zi->ci.bstream.total_in_lo32 = 0; |
| 1386 zi->ci.bstream.total_in_hi32 = 0; |
| 1387 } |
| 1388 else |
| 1389 #endif |
| 1390 { |
| 1391 zi->ci.totalUncompressedData += zi->ci.stream.total_in; |
| 1392 zi->ci.stream.total_in = 0; |
| 1393 } |
| 1394 |
| 1395 |
| 1396 zi->ci.pos_in_buffered_data = 0; |
| 1397 |
| 1398 return err; |
| 1399 } |
| 1400 |
| 1401 extern int ZEXPORT zipWriteInFileInZip (zipFile file,const void* buf,unsigned in
t len) |
| 1402 { |
| 1403 zip64_internal* zi; |
| 1404 int err=ZIP_OK; |
| 1405 |
| 1406 if (file == NULL) |
| 1407 return ZIP_PARAMERROR; |
| 1408 zi = (zip64_internal*)file; |
| 1409 |
| 1410 if (zi->in_opened_file_inzip == 0) |
| 1411 return ZIP_PARAMERROR; |
| 1412 |
| 1413 zi->ci.crc32 = crc32(zi->ci.crc32,buf,(uInt)len); |
| 1414 |
| 1415 #ifdef HAVE_BZIP2 |
| 1416 if(zi->ci.method == Z_BZIP2ED && (!zi->ci.raw)) |
| 1417 { |
| 1418 zi->ci.bstream.next_in = (void*)buf; |
| 1419 zi->ci.bstream.avail_in = len; |
| 1420 err = BZ_RUN_OK; |
| 1421 |
| 1422 while ((err==BZ_RUN_OK) && (zi->ci.bstream.avail_in>0)) |
| 1423 { |
| 1424 if (zi->ci.bstream.avail_out == 0) |
| 1425 { |
| 1426 if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO) |
| 1427 err = ZIP_ERRNO; |
| 1428 zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE; |
| 1429 zi->ci.bstream.next_out = (char*)zi->ci.buffered_data; |
| 1430 } |
| 1431 |
| 1432 |
| 1433 if(err != BZ_RUN_OK) |
| 1434 break; |
| 1435 |
| 1436 if ((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw)) |
| 1437 { |
| 1438 uLong uTotalOutBefore_lo = zi->ci.bstream.total_out_lo32; |
| 1439 // uLong uTotalOutBefore_hi = zi->ci.bstream.total_out_hi32; |
| 1440 err=BZ2_bzCompress(&zi->ci.bstream, BZ_RUN); |
| 1441 |
| 1442 zi->ci.pos_in_buffered_data += (uInt)(zi->ci.bstream.total_out_lo32 -
uTotalOutBefore_lo) ; |
| 1443 } |
| 1444 } |
| 1445 |
| 1446 if(err == BZ_RUN_OK) |
| 1447 err = ZIP_OK; |
| 1448 } |
| 1449 else |
| 1450 #endif |
| 1451 { |
| 1452 zi->ci.stream.next_in = (Bytef*)buf; |
| 1453 zi->ci.stream.avail_in = len; |
| 1454 |
| 1455 while ((err==ZIP_OK) && (zi->ci.stream.avail_in>0)) |
| 1456 { |
| 1457 if (zi->ci.stream.avail_out == 0) |
| 1458 { |
| 1459 if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO) |
| 1460 err = ZIP_ERRNO; |
| 1461 zi->ci.stream.avail_out = (uInt)Z_BUFSIZE; |
| 1462 zi->ci.stream.next_out = zi->ci.buffered_data; |
| 1463 } |
| 1464 |
| 1465 |
| 1466 if(err != ZIP_OK) |
| 1467 break; |
| 1468 |
| 1469 if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw)) |
| 1470 { |
| 1471 uLong uTotalOutBefore = zi->ci.stream.total_out; |
| 1472 err=deflate(&zi->ci.stream, Z_NO_FLUSH); |
| 1473 if(uTotalOutBefore > zi->ci.stream.total_out) |
| 1474 { |
| 1475 int bBreak = 0; |
| 1476 bBreak++; |
| 1477 } |
| 1478 |
| 1479 zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uT
otalOutBefore) ; |
| 1480 } |
| 1481 else |
| 1482 { |
| 1483 uInt copy_this,i; |
| 1484 if (zi->ci.stream.avail_in < zi->ci.stream.avail_out) |
| 1485 copy_this = zi->ci.stream.avail_in; |
| 1486 else |
| 1487 copy_this = zi->ci.stream.avail_out; |
| 1488 |
| 1489 for (i = 0; i < copy_this; i++) |
| 1490 *(((char*)zi->ci.stream.next_out)+i) = |
| 1491 *(((const char*)zi->ci.stream.next_in)+i); |
| 1492 { |
| 1493 zi->ci.stream.avail_in -= copy_this; |
| 1494 zi->ci.stream.avail_out-= copy_this; |
| 1495 zi->ci.stream.next_in+= copy_this; |
| 1496 zi->ci.stream.next_out+= copy_this; |
| 1497 zi->ci.stream.total_in+= copy_this; |
| 1498 zi->ci.stream.total_out+= copy_this; |
| 1499 zi->ci.pos_in_buffered_data += copy_this; |
| 1500 } |
| 1501 } |
| 1502 }// while(...) |
| 1503 } |
| 1504 |
| 1505 return err; |
| 1506 } |
| 1507 |
| 1508 extern int ZEXPORT zipCloseFileInZipRaw (zipFile file, uLong uncompressed_size,
uLong crc32) |
| 1509 { |
| 1510 return zipCloseFileInZipRaw64 (file, uncompressed_size, crc32); |
| 1511 } |
| 1512 |
| 1513 extern int ZEXPORT zipCloseFileInZipRaw64 (zipFile file, ZPOS64_T uncompressed_s
ize, uLong crc32) |
| 1514 { |
| 1515 zip64_internal* zi; |
| 1516 ZPOS64_T compressed_size; |
| 1517 uLong invalidValue = 0xffffffff; |
| 1518 short datasize = 0; |
| 1519 int err=ZIP_OK; |
| 1520 |
| 1521 if (file == NULL) |
| 1522 return ZIP_PARAMERROR; |
| 1523 zi = (zip64_internal*)file; |
| 1524 |
| 1525 if (zi->in_opened_file_inzip == 0) |
| 1526 return ZIP_PARAMERROR; |
| 1527 zi->ci.stream.avail_in = 0; |
| 1528 |
| 1529 if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw)) |
| 1530 { |
| 1531 while (err==ZIP_OK) |
| 1532 { |
| 1533 uLong uTotalOutBefore; |
| 1534 if (zi->ci.stream.avail_out == 0) |
| 1535 { |
| 1536 if (zip64FlushWriteBuffer(zi) == ZIP_ERR
NO) |
| 1537 err = ZIP_ERRNO; |
| 1538 zi->ci.stream.avail_out = (uInt)Z_BUFSIZ
E; |
| 1539 zi->ci.stream.next_out = zi->ci.buffered
_data; |
| 1540 } |
| 1541 uTotalOutBefore = zi->ci.stream.total_out; |
| 1542 err=deflate(&zi->ci.stream, Z_FINISH); |
| 1543 zi->ci.pos_in_buffered_data += (uInt)(zi->ci.str
eam.total_out - uTotalOutBefore) ; |
| 1544 } |
| 1545 } |
| 1546 else if ((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw)) |
| 1547 { |
| 1548 #ifdef HAVE_BZIP2 |
| 1549 err = BZ_FINISH_OK; |
| 1550 while (err==BZ_FINISH_OK) |
| 1551 { |
| 1552 uLong uTotalOutBefore; |
| 1553 if (zi->ci.bstream.avail_out == 0) |
| 1554 { |
| 1555 if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO) |
| 1556 err = ZIP_ERRNO; |
| 1557 zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE; |
| 1558 zi->ci.bstream.next_out = (char*)zi->ci.buffered_data; |
| 1559 } |
| 1560 uTotalOutBefore = zi->ci.bstream.total_out_lo32; |
| 1561 err=BZ2_bzCompress(&zi->ci.bstream, BZ_FINISH); |
| 1562 if(err == BZ_STREAM_END) |
| 1563 err = Z_STREAM_END; |
| 1564 |
| 1565 zi->ci.pos_in_buffered_data += (uInt)(zi->ci.bstream.total_out_lo32 - uT
otalOutBefore); |
| 1566 } |
| 1567 |
| 1568 if(err == BZ_FINISH_OK) |
| 1569 err = ZIP_OK; |
| 1570 #endif |
| 1571 } |
| 1572 |
| 1573 if (err==Z_STREAM_END) |
| 1574 err=ZIP_OK; /* this is normal */ |
| 1575 |
| 1576 if ((zi->ci.pos_in_buffered_data>0) && (err==ZIP_OK)) |
| 1577 { |
| 1578 if (zip64FlushWriteBuffer(zi)==ZIP_ERRNO) |
| 1579 err = ZIP_ERRNO; |
| 1580 } |
| 1581 |
| 1582 if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw)) |
| 1583 { |
| 1584 int tmp_err = deflateEnd(&zi->ci.stream); |
| 1585 if (err == ZIP_OK) |
| 1586 err = tmp_err; |
| 1587 zi->ci.stream_initialised = 0; |
| 1588 } |
| 1589 #ifdef HAVE_BZIP2 |
| 1590 else if((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw)) |
| 1591 { |
| 1592 int tmperr = BZ2_bzCompressEnd(&zi->ci.bstream); |
| 1593 if (err==ZIP_OK) |
| 1594 err = tmperr; |
| 1595 zi->ci.stream_initialised = 0; |
| 1596 } |
| 1597 #endif |
| 1598 |
| 1599 if (!zi->ci.raw) |
| 1600 { |
| 1601 crc32 = (uLong)zi->ci.crc32; |
| 1602 uncompressed_size = zi->ci.totalUncompressedData; |
| 1603 } |
| 1604 compressed_size = zi->ci.totalCompressedData; |
| 1605 |
| 1606 # ifndef NOCRYPT |
| 1607 compressed_size += zi->ci.crypt_header_size; |
| 1608 # endif |
| 1609 |
| 1610 // update Current Item crc and sizes, |
| 1611 if(compressed_size >= 0xffffffff || uncompressed_size >= 0xffffffff || zi->c
i.pos_local_header >= 0xffffffff) |
| 1612 { |
| 1613 /*version Made by*/ |
| 1614 zip64local_putValue_inmemory(zi->ci.central_header+4,(uLong)45,2); |
| 1615 /*version needed*/ |
| 1616 zip64local_putValue_inmemory(zi->ci.central_header+6,(uLong)45,2); |
| 1617 |
| 1618 } |
| 1619 |
| 1620 zip64local_putValue_inmemory(zi->ci.central_header+16,crc32,4); /*crc*/ |
| 1621 |
| 1622 |
| 1623 if(compressed_size >= 0xffffffff) |
| 1624 zip64local_putValue_inmemory(zi->ci.central_header+20, invalidValue,4); /*
compr size*/ |
| 1625 else |
| 1626 zip64local_putValue_inmemory(zi->ci.central_header+20, compressed_size,4);
/*compr size*/ |
| 1627 |
| 1628 /// set internal file attributes field |
| 1629 if (zi->ci.stream.data_type == Z_ASCII) |
| 1630 zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)Z_ASCII,2); |
| 1631 |
| 1632 if(uncompressed_size >= 0xffffffff) |
| 1633 zip64local_putValue_inmemory(zi->ci.central_header+24, invalidValue,4); /*
uncompr size*/ |
| 1634 else |
| 1635 zip64local_putValue_inmemory(zi->ci.central_header+24, uncompressed_size,4
); /*uncompr size*/ |
| 1636 |
| 1637 // Add ZIP64 extra info field for uncompressed size |
| 1638 if(uncompressed_size >= 0xffffffff) |
| 1639 datasize += 8; |
| 1640 |
| 1641 // Add ZIP64 extra info field for compressed size |
| 1642 if(compressed_size >= 0xffffffff) |
| 1643 datasize += 8; |
| 1644 |
| 1645 // Add ZIP64 extra info field for relative offset to local file header of cu
rrent file |
| 1646 if(zi->ci.pos_local_header >= 0xffffffff) |
| 1647 datasize += 8; |
| 1648 |
| 1649 if(datasize > 0) |
| 1650 { |
| 1651 char* p = NULL; |
| 1652 |
| 1653 if((uLong)(datasize + 4) > zi->ci.size_centralExtraFree) |
| 1654 { |
| 1655 // we can not write more data to the buffer that we have room for. |
| 1656 return ZIP_BADZIPFILE; |
| 1657 } |
| 1658 |
| 1659 p = zi->ci.central_header + zi->ci.size_centralheader; |
| 1660 |
| 1661 // Add Extra Information Header for 'ZIP64 information' |
| 1662 zip64local_putValue_inmemory(p, 0x0001, 2); // HeaderID |
| 1663 p += 2; |
| 1664 zip64local_putValue_inmemory(p, datasize, 2); // DataSize |
| 1665 p += 2; |
| 1666 |
| 1667 if(uncompressed_size >= 0xffffffff) |
| 1668 { |
| 1669 zip64local_putValue_inmemory(p, uncompressed_size, 8); |
| 1670 p += 8; |
| 1671 } |
| 1672 |
| 1673 if(compressed_size >= 0xffffffff) |
| 1674 { |
| 1675 zip64local_putValue_inmemory(p, compressed_size, 8); |
| 1676 p += 8; |
| 1677 } |
| 1678 |
| 1679 if(zi->ci.pos_local_header >= 0xffffffff) |
| 1680 { |
| 1681 zip64local_putValue_inmemory(p, zi->ci.pos_local_header, 8); |
| 1682 p += 8; |
| 1683 } |
| 1684 |
| 1685 // Update how much extra free space we got in the memory buffer |
| 1686 // and increase the centralheader size so the new ZIP64 fields are include
d |
| 1687 // ( 4 below is the size of HeaderID and DataSize field ) |
| 1688 zi->ci.size_centralExtraFree -= datasize + 4; |
| 1689 zi->ci.size_centralheader += datasize + 4; |
| 1690 |
| 1691 // Update the extra info size field |
| 1692 zi->ci.size_centralExtra += datasize + 4; |
| 1693 zip64local_putValue_inmemory(zi->ci.central_header+30,(uLong)zi->ci.size_c
entralExtra,2); |
| 1694 } |
| 1695 |
| 1696 if (err==ZIP_OK) |
| 1697 err = add_data_in_datablock(&zi->central_dir, zi->ci.central_header, (uL
ong)zi->ci.size_centralheader); |
| 1698 |
| 1699 free(zi->ci.central_header); |
| 1700 |
| 1701 if (err==ZIP_OK) |
| 1702 { |
| 1703 // Update the LocalFileHeader with the new values. |
| 1704 |
| 1705 ZPOS64_T cur_pos_inzip = ZTELL64(zi->z_filefunc,zi->filestream); |
| 1706 |
| 1707 if (ZSEEK64(zi->z_filefunc,zi->filestream, zi->ci.pos_local_header + 14,
ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 1708 err = ZIP_ERRNO; |
| 1709 |
| 1710 if (err==ZIP_OK) |
| 1711 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,crc32,4); /
* crc 32, unknown */ |
| 1712 |
| 1713 if(uncompressed_size >= 0xffffffff) |
| 1714 { |
| 1715 if(zi->ci.pos_zip64extrainfo > 0) |
| 1716 { |
| 1717 // Update the size in the ZIP64 extended field. |
| 1718 if (ZSEEK64(zi->z_filefunc,zi->filestream, zi->ci.pos_zip64extrainfo
+ 4,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 1719 err = ZIP_ERRNO; |
| 1720 |
| 1721 if (err==ZIP_OK) /* compressed size, unknown */ |
| 1722 err = zip64local_putValue(&zi->z_filefunc, zi->filestream, uncompr
essed_size, 8); |
| 1723 |
| 1724 if (err==ZIP_OK) /* uncompressed size, unknown */ |
| 1725 err = zip64local_putValue(&zi->z_filefunc, zi->filestream, compres
sed_size, 8); |
| 1726 } |
| 1727 } |
| 1728 else |
| 1729 { |
| 1730 if (err==ZIP_OK) /* compressed size, unknown */ |
| 1731 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,compresse
d_size,4); |
| 1732 |
| 1733 if (err==ZIP_OK) /* uncompressed size, unknown */ |
| 1734 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,uncompres
sed_size,4); |
| 1735 } |
| 1736 |
| 1737 if (ZSEEK64(zi->z_filefunc,zi->filestream, cur_pos_inzip,ZLIB_FILEFUNC_S
EEK_SET)!=0) |
| 1738 err = ZIP_ERRNO; |
| 1739 } |
| 1740 |
| 1741 zi->number_entry ++; |
| 1742 zi->in_opened_file_inzip = 0; |
| 1743 |
| 1744 return err; |
| 1745 } |
| 1746 |
| 1747 extern int ZEXPORT zipCloseFileInZip (zipFile file) |
| 1748 { |
| 1749 return zipCloseFileInZipRaw (file,0,0); |
| 1750 } |
| 1751 |
| 1752 int Write_Zip64EndOfCentralDirectoryLocator(zip64_internal* zi, ZPOS64_T zip64eo
cd_pos_inzip) |
| 1753 { |
| 1754 int err = ZIP_OK; |
| 1755 ZPOS64_T pos = zip64eocd_pos_inzip - zi->add_position_when_writting_offset; |
| 1756 |
| 1757 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ZIP64ENDLOCHEA
DERMAGIC,4); |
| 1758 |
| 1759 /*num disks*/ |
| 1760 if (err==ZIP_OK) /* number of the disk with the start of the central directo
ry */ |
| 1761 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); |
| 1762 |
| 1763 /*relative offset*/ |
| 1764 if (err==ZIP_OK) /* Relative offset to the Zip64EndOfCentralDirectory */ |
| 1765 err = zip64local_putValue(&zi->z_filefunc,zi->filestream, pos,8); |
| 1766 |
| 1767 /*total disks*/ /* Do not support spawning of disk so always say 1 here*/ |
| 1768 if (err==ZIP_OK) /* number of the disk with the start of the central directo
ry */ |
| 1769 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)1,4); |
| 1770 |
| 1771 return err; |
| 1772 } |
| 1773 |
| 1774 int Write_Zip64EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centra
ldir, ZPOS64_T centraldir_pos_inzip) |
| 1775 { |
| 1776 int err = ZIP_OK; |
| 1777 |
| 1778 uLong Zip64DataSize = 44; |
| 1779 |
| 1780 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ZIP64ENDHEADER
MAGIC,4); |
| 1781 |
| 1782 if (err==ZIP_OK) /* size of this 'zip64 end of central directory' */ |
| 1783 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(ZPOS64_T)Zip64Data
Size,8); // why ZPOS64_T of this ? |
| 1784 |
| 1785 if (err==ZIP_OK) /* version made by */ |
| 1786 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2); |
| 1787 |
| 1788 if (err==ZIP_OK) /* version needed */ |
| 1789 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2); |
| 1790 |
| 1791 if (err==ZIP_OK) /* number of this disk */ |
| 1792 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); |
| 1793 |
| 1794 if (err==ZIP_OK) /* number of the disk with the start of the central directory
*/ |
| 1795 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); |
| 1796 |
| 1797 if (err==ZIP_OK) /* total number of entries in the central dir on this disk */ |
| 1798 err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry,
8); |
| 1799 |
| 1800 if (err==ZIP_OK) /* total number of entries in the central dir */ |
| 1801 err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry,
8); |
| 1802 |
| 1803 if (err==ZIP_OK) /* size of the central directory */ |
| 1804 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(ZPOS64_T)size_cent
raldir,8); |
| 1805 |
| 1806 if (err==ZIP_OK) /* offset of start of central directory with respect to the s
tarting disk number */ |
| 1807 { |
| 1808 ZPOS64_T pos = centraldir_pos_inzip - zi->add_position_when_writting_offset; |
| 1809 err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (ZPOS64_T)pos,8); |
| 1810 } |
| 1811 return err; |
| 1812 } |
| 1813 int Write_EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centraldir,
ZPOS64_T centraldir_pos_inzip) |
| 1814 { |
| 1815 int err = ZIP_OK; |
| 1816 |
| 1817 /*signature*/ |
| 1818 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ENDHEADERMAGIC
,4); |
| 1819 |
| 1820 if (err==ZIP_OK) /* number of this disk */ |
| 1821 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2); |
| 1822 |
| 1823 if (err==ZIP_OK) /* number of the disk with the start of the central directory
*/ |
| 1824 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2); |
| 1825 |
| 1826 if (err==ZIP_OK) /* total number of entries in the central dir on this disk */ |
| 1827 { |
| 1828 { |
| 1829 if(zi->number_entry >= 0xFFFF) |
| 1830 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xffff,2
); // use value in ZIP64 record |
| 1831 else |
| 1832 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->numb
er_entry,2); |
| 1833 } |
| 1834 } |
| 1835 |
| 1836 if (err==ZIP_OK) /* total number of entries in the central dir */ |
| 1837 { |
| 1838 if(zi->number_entry >= 0xFFFF) |
| 1839 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xffff,2);
// use value in ZIP64 record |
| 1840 else |
| 1841 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number
_entry,2); |
| 1842 } |
| 1843 |
| 1844 if (err==ZIP_OK) /* size of the central directory */ |
| 1845 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_central
dir,4); |
| 1846 |
| 1847 if (err==ZIP_OK) /* offset of start of central directory with respect to the s
tarting disk number */ |
| 1848 { |
| 1849 ZPOS64_T pos = centraldir_pos_inzip - zi->add_position_when_writting_offset; |
| 1850 if(pos >= 0xffffffff) |
| 1851 { |
| 1852 err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (uLong)0xfffffff
f,4); |
| 1853 } |
| 1854 else |
| 1855 err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (uLo
ng)(centraldir_pos_inzip - zi->add_position_when_writting_offset),4); |
| 1856 } |
| 1857 |
| 1858 return err; |
| 1859 } |
| 1860 |
| 1861 int Write_GlobalComment(zip64_internal* zi, const char* global_comment) |
| 1862 { |
| 1863 int err = ZIP_OK; |
| 1864 uInt size_global_comment = 0; |
| 1865 |
| 1866 if(global_comment != NULL) |
| 1867 size_global_comment = (uInt)strlen(global_comment); |
| 1868 |
| 1869 err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_global_co
mment,2); |
| 1870 |
| 1871 if (err == ZIP_OK && size_global_comment > 0) |
| 1872 { |
| 1873 if (ZWRITE64(zi->z_filefunc,zi->filestream, global_comment, size_global_comm
ent) != size_global_comment) |
| 1874 err = ZIP_ERRNO; |
| 1875 } |
| 1876 return err; |
| 1877 } |
| 1878 |
| 1879 extern int ZEXPORT zipClose (zipFile file, const char* global_comment) |
| 1880 { |
| 1881 zip64_internal* zi; |
| 1882 int err = 0; |
| 1883 uLong size_centraldir = 0; |
| 1884 ZPOS64_T centraldir_pos_inzip; |
| 1885 ZPOS64_T pos; |
| 1886 |
| 1887 if (file == NULL) |
| 1888 return ZIP_PARAMERROR; |
| 1889 |
| 1890 zi = (zip64_internal*)file; |
| 1891 |
| 1892 if (zi->in_opened_file_inzip == 1) |
| 1893 { |
| 1894 err = zipCloseFileInZip (file); |
| 1895 } |
| 1896 |
| 1897 #ifndef NO_ADDFILEINEXISTINGZIP |
| 1898 if (global_comment==NULL) |
| 1899 global_comment = zi->globalcomment; |
| 1900 #endif |
| 1901 |
| 1902 centraldir_pos_inzip = ZTELL64(zi->z_filefunc,zi->filestream); |
| 1903 |
| 1904 if (err==ZIP_OK) |
| 1905 { |
| 1906 linkedlist_datablock_internal* ldi = zi->central_dir.first_block; |
| 1907 while (ldi!=NULL) |
| 1908 { |
| 1909 if ((err==ZIP_OK) && (ldi->filled_in_this_block>0)) |
| 1910 { |
| 1911 if (ZWRITE64(zi->z_filefunc,zi->filestream, ldi->data, ldi->fill
ed_in_this_block) != ldi->filled_in_this_block) |
| 1912 err = ZIP_ERRNO; |
| 1913 } |
| 1914 |
| 1915 size_centraldir += ldi->filled_in_this_block; |
| 1916 ldi = ldi->next_datablock; |
| 1917 } |
| 1918 } |
| 1919 free_linkedlist(&(zi->central_dir)); |
| 1920 |
| 1921 pos = centraldir_pos_inzip - zi->add_position_when_writting_offset; |
| 1922 if(pos >= 0xffffffff) |
| 1923 { |
| 1924 ZPOS64_T Zip64EOCDpos = ZTELL64(zi->z_filefunc,zi->filestream); |
| 1925 Write_Zip64EndOfCentralDirectoryRecord(zi, size_centraldir, centraldir_pos
_inzip); |
| 1926 |
| 1927 Write_Zip64EndOfCentralDirectoryLocator(zi, Zip64EOCDpos); |
| 1928 } |
| 1929 |
| 1930 if (err==ZIP_OK) |
| 1931 err = Write_EndOfCentralDirectoryRecord(zi, size_centraldir, centraldir_po
s_inzip); |
| 1932 |
| 1933 if(err == ZIP_OK) |
| 1934 err = Write_GlobalComment(zi, global_comment); |
| 1935 |
| 1936 if (ZCLOSE64(zi->z_filefunc,zi->filestream) != 0) |
| 1937 if (err == ZIP_OK) |
| 1938 err = ZIP_ERRNO; |
| 1939 |
| 1940 #ifndef NO_ADDFILEINEXISTINGZIP |
| 1941 TRYFREE(zi->globalcomment); |
| 1942 #endif |
| 1943 TRYFREE(zi); |
| 1944 |
| 1945 return err; |
| 1946 } |
| 1947 |
| 1948 extern int ZEXPORT zipRemoveExtraInfoBlock (char* pData, int* dataLen, short sHe
ader) |
| 1949 { |
| 1950 char* p = pData; |
| 1951 int size = 0; |
| 1952 char* pNewHeader; |
| 1953 char* pTmp; |
| 1954 short header; |
| 1955 short dataSize; |
| 1956 |
| 1957 int retVal = ZIP_OK; |
| 1958 |
| 1959 if(pData == NULL || *dataLen < 4) |
| 1960 return ZIP_PARAMERROR; |
| 1961 |
| 1962 pNewHeader = (char*)ALLOC(*dataLen); |
| 1963 pTmp = pNewHeader; |
| 1964 |
| 1965 while(p < (pData + *dataLen)) |
| 1966 { |
| 1967 header = *(short*)p; |
| 1968 dataSize = *(((short*)p)+1); |
| 1969 |
| 1970 if( header == sHeader ) // Header found. |
| 1971 { |
| 1972 p += dataSize + 4; // skip it. do not copy to temp buffer |
| 1973 } |
| 1974 else |
| 1975 { |
| 1976 // Extra Info block should not be removed, So copy it to the temp buffer. |
| 1977 memcpy(pTmp, p, dataSize + 4); |
| 1978 p += dataSize + 4; |
| 1979 size += dataSize + 4; |
| 1980 } |
| 1981 |
| 1982 } |
| 1983 |
| 1984 if(size < *dataLen) |
| 1985 { |
| 1986 // clean old extra info block. |
| 1987 memset(pData,0, *dataLen); |
| 1988 |
| 1989 // copy the new extra info block over the old |
| 1990 if(size > 0) |
| 1991 memcpy(pData, pNewHeader, size); |
| 1992 |
| 1993 // set the new extra info size |
| 1994 *dataLen = size; |
| 1995 |
| 1996 retVal = ZIP_OK; |
| 1997 } |
| 1998 else |
| 1999 retVal = ZIP_ERRNO; |
| 2000 |
| 2001 TRYFREE(pNewHeader); |
| 2002 |
| 2003 return retVal; |
| 2004 } |
OLD | NEW |