| 1 | /* unzip.c -- IO for uncompress .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 of Unzip for Zip64 |
| 8 | Copyright (C) 2007-2008 Even Rouault |
| 9 | |
| 10 | Modifications for Zip64 support on both zip and unzip |
| 11 | Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) |
| 12 | |
| 13 | For more info read MiniZip_info.txt |
| 14 | |
| 15 | |
| 16 | ------------------------------------------------------------------------------------ |
| 17 | Decryption code comes from crypt.c by Info-ZIP but has been greatly reduced in terms of |
| 18 | compatibility with older software. The following is from the original crypt.c. |
| 19 | Code woven in by Terry Thorsen 1/2003. |
| 20 | |
| 21 | Copyright (c) 1990-2000 Info-ZIP. All rights reserved. |
| 22 | |
| 23 | See the accompanying file LICENSE, version 2000-Apr-09 or later |
| 24 | (the contents of which are also included in zip.h) for terms of use. |
| 25 | If, for some reason, all these files are missing, the Info-ZIP license |
| 26 | also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html |
| 27 | |
| 28 | crypt.c (full version) by Info-ZIP. Last revised: [see crypt.h] |
| 29 | |
| 30 | The encryption/decryption parts of this source code (as opposed to the |
| 31 | non-echoing password parts) were originally written in Europe. The |
| 32 | whole source package can be freely distributed, including from the USA. |
| 33 | (Prior to January 2000, re-export from the US was a violation of US law.) |
| 34 | |
| 35 | This encryption code is a direct transcription of the algorithm from |
| 36 | Roger Schlafly, described by Phil Katz in the file appnote.txt. This |
| 37 | file (appnote.txt) is distributed with the PKZIP program (even in the |
| 38 | version without encryption capabilities). |
| 39 | |
| 40 | ------------------------------------------------------------------------------------ |
| 41 | |
| 42 | Changes in unzip.c |
| 43 | |
| 44 | 2007-2008 - Even Rouault - Addition of cpl_unzGetCurrentFileZStreamPos |
| 45 | 2007-2008 - Even Rouault - Decoration of symbol names unz* -> cpl_unz* |
| 46 | 2007-2008 - Even Rouault - Remove old C style function prototypes |
| 47 | 2007-2008 - Even Rouault - Add unzip support for ZIP64 |
| 48 | |
| 49 | Copyright (C) 2007-2008 Even Rouault |
| 50 | |
| 51 | |
| 52 | Oct-2009 - Mathias Svensson - Removed cpl_* from symbol names (Even Rouault added them but since this is now moved to a new project (minizip64) I renamed them again). |
| 53 | Oct-2009 - Mathias Svensson - Fixed problem if uncompressed size was > 4G and compressed size was <4G |
| 54 | should only read the compressed/uncompressed size from the Zip64 format if |
| 55 | the size from normal header was 0xFFFFFFFF |
| 56 | Oct-2009 - Mathias Svensson - Applied some bug fixes from paches recived from Gilles Vollant |
| 57 | Oct-2009 - Mathias Svensson - Applied support to unzip files with compression mathod BZIP2 (bzip2 lib is required) |
| 58 | Patch created by Daniel Borca |
| 59 | |
| 60 | Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer |
| 61 | |
| 62 | Copyright (C) 1998 - 2010 Gilles Vollant, Even Rouault, Mathias Svensson |
| 63 | |
| 64 | */ |
| 65 | |
| 66 | |
| 67 | #include <stdio.h> |
| 68 | #include <stdlib.h> |
| 69 | #include <string.h> |
| 70 | |
| 71 | #ifndef NOUNCRYPT |
| 72 | #define NOUNCRYPT |
| 73 | #endif |
| 74 | |
| 75 | #include "zlib.h" |
| 76 | #include "unzip.h" |
| 77 | |
| 78 | #ifdef STDC |
| 79 | # include <stddef.h> |
| 80 | # include <string.h> |
| 81 | # include <stdlib.h> |
| 82 | #endif |
| 83 | #ifdef NO_ERRNO_H |
| 84 | extern int errno; |
| 85 | #else |
| 86 | # include <errno.h> |
| 87 | #endif |
| 88 | |
| 89 | |
| 90 | #ifndef local |
| 91 | # define local static |
| 92 | #endif |
| 93 | /* compile with -Dlocal if your debugger can't find static symbols */ |
| 94 | |
| 95 | |
| 96 | #ifndef CASESENSITIVITYDEFAULT_NO |
| 97 | # if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES) |
| 98 | # define CASESENSITIVITYDEFAULT_NO |
| 99 | # endif |
| 100 | #endif |
| 101 | |
| 102 | |
| 103 | #ifndef UNZ_BUFSIZE |
| 104 | #define UNZ_BUFSIZE (16384) |
| 105 | #endif |
| 106 | |
| 107 | #ifndef UNZ_MAXFILENAMEINZIP |
| 108 | #define UNZ_MAXFILENAMEINZIP (256) |
| 109 | #endif |
| 110 | |
| 111 | #ifndef ALLOC |
| 112 | # define ALLOC(size) (malloc(size)) |
| 113 | #endif |
| 114 | #ifndef TRYFREE |
| 115 | # define TRYFREE(p) {if (p) free(p);} |
| 116 | #endif |
| 117 | |
| 118 | #define SIZECENTRALDIRITEM (0x2e) |
| 119 | #define SIZEZIPLOCALHEADER (0x1e) |
| 120 | |
| 121 | |
| 122 | const char unz_copyright[] = |
| 123 | " unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll"; |
| 124 | |
| 125 | /* unz_file_info_interntal contain internal info about a file in zipfile*/ |
| 126 | typedef struct unz_file_info64_internal_s |
| 127 | { |
| 128 | ZPOS64_T offset_curfile;/* relative offset of local header 8 bytes */ |
| 129 | } unz_file_info64_internal; |
| 130 | |
| 131 | |
| 132 | /* file_in_zip_read_info_s contain internal information about a file in zipfile, |
| 133 | when reading and decompress it */ |
| 134 | typedef struct |
| 135 | { |
| 136 | char *read_buffer; /* internal buffer for compressed data */ |
| 137 | z_stream stream; /* zLib stream structure for inflate */ |
| 138 | |
| 139 | #ifdef HAVE_BZIP2 |
| 140 | bz_stream bstream; /* bzLib stream structure for bziped */ |
| 141 | #endif |
| 142 | |
| 143 | ZPOS64_T pos_in_zipfile; /* position in byte on the zipfile, for fseek*/ |
| 144 | uLong stream_initialised; /* flag set if stream structure is initialised*/ |
| 145 | |
| 146 | ZPOS64_T offset_local_extrafield;/* offset of the local extra field */ |
| 147 | uInt size_local_extrafield;/* size of the local extra field */ |
| 148 | ZPOS64_T pos_local_extrafield; /* position in the local extra field in read*/ |
| 149 | ZPOS64_T total_out_64; |
| 150 | |
| 151 | uLong crc32; /* crc32 of all data uncompressed */ |
| 152 | uLong crc32_wait; /* crc32 we must obtain after decompress all */ |
| 153 | ZPOS64_T rest_read_compressed; /* number of byte to be decompressed */ |
| 154 | ZPOS64_T rest_read_uncompressed;/*number of byte to be obtained after decomp*/ |
| 155 | zlib_filefunc64_32_def z_filefunc; |
| 156 | voidpf filestream; /* io structore of the zipfile */ |
| 157 | uLong compression_method; /* compression method (0==store) */ |
| 158 | ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ |
| 159 | int raw; |
| 160 | } file_in_zip64_read_info_s; |
| 161 | |
| 162 | |
| 163 | /* unz64_s contain internal information about the zipfile |
| 164 | */ |
| 165 | typedef struct |
| 166 | { |
| 167 | zlib_filefunc64_32_def z_filefunc; |
| 168 | int is64bitOpenFunction; |
| 169 | voidpf filestream; /* io structore of the zipfile */ |
| 170 | unz_global_info64 gi; /* public global information */ |
| 171 | ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ |
| 172 | ZPOS64_T num_file; /* number of the current file in the zipfile*/ |
| 173 | ZPOS64_T pos_in_central_dir; /* pos of the current file in the central dir*/ |
| 174 | ZPOS64_T current_file_ok; /* flag about the usability of the current file*/ |
| 175 | ZPOS64_T central_pos; /* position of the beginning of the central dir*/ |
| 176 | |
| 177 | ZPOS64_T size_central_dir; /* size of the central directory */ |
| 178 | ZPOS64_T offset_central_dir; /* offset of start of central directory with |
| 179 | respect to the starting disk number */ |
| 180 | |
| 181 | unz_file_info64 cur_file_info; /* public info about the current file in zip*/ |
| 182 | unz_file_info64_internal cur_file_info_internal; /* private info about it*/ |
| 183 | file_in_zip64_read_info_s* pfile_in_zip_read; /* structure about the current |
| 184 | file if we are decompressing it */ |
| 185 | int encrypted; |
| 186 | |
| 187 | int isZip64; |
| 188 | |
| 189 | # ifndef NOUNCRYPT |
| 190 | unsigned long keys[3]; /* keys defining the pseudo-random sequence */ |
| 191 | const unsigned long* pcrc_32_tab; |
| 192 | # endif |
| 193 | } unz64_s; |
| 194 | |
| 195 | |
| 196 | #ifndef NOUNCRYPT |
| 197 | #include "crypt.h" |
| 198 | #endif |
| 199 | |
| 200 | /* =========================================================================== |
| 201 | Read a byte from a gz_stream; update next_in and avail_in. Return EOF |
| 202 | for end of file. |
| 203 | IN assertion: the stream s has been sucessfully opened for reading. |
| 204 | */ |
| 205 | |
| 206 | |
| 207 | local int unz64local_getByte OF(( |
| 208 | const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 209 | voidpf filestream, |
| 210 | int *pi)); |
| 211 | |
| 212 | local int unz64local_getByte(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, int *pi) |
| 213 | { |
| 214 | unsigned char c; |
| 215 | int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,&c,1); |
| 216 | if (err==1) |
| 217 | { |
| 218 | *pi = (int)c; |
| 219 | return UNZ_OK; |
| 220 | } |
| 221 | else |
| 222 | { |
| 223 | if (ZERROR64(*pzlib_filefunc_def,filestream)) |
| 224 | return UNZ_ERRNO; |
| 225 | else |
| 226 | return UNZ_EOF; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | |
| 231 | /* =========================================================================== |
| 232 | Reads a long in LSB order from the given gz_stream. Sets |
| 233 | */ |
| 234 | local int unz64local_getShort OF(( |
| 235 | const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 236 | voidpf filestream, |
| 237 | uLong *pX)); |
| 238 | |
| 239 | local int unz64local_getShort (const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 240 | voidpf filestream, |
| 241 | uLong *pX) |
| 242 | { |
| 243 | uLong x ; |
| 244 | int i = 0; |
| 245 | int err; |
| 246 | |
| 247 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 248 | x = (uLong)i; |
| 249 | |
| 250 | if (err==UNZ_OK) |
| 251 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 252 | x |= ((uLong)i)<<8; |
| 253 | |
| 254 | if (err==UNZ_OK) |
| 255 | *pX = x; |
| 256 | else |
| 257 | *pX = 0; |
| 258 | return err; |
| 259 | } |
| 260 | |
| 261 | local int unz64local_getLong OF(( |
| 262 | const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 263 | voidpf filestream, |
| 264 | uLong *pX)); |
| 265 | |
| 266 | local int unz64local_getLong (const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 267 | voidpf filestream, |
| 268 | uLong *pX) |
| 269 | { |
| 270 | uLong x ; |
| 271 | int i = 0; |
| 272 | int err; |
| 273 | |
| 274 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 275 | x = (uLong)i; |
| 276 | |
| 277 | if (err==UNZ_OK) |
| 278 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 279 | x |= ((uLong)i)<<8; |
| 280 | |
| 281 | if (err==UNZ_OK) |
| 282 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 283 | x |= ((uLong)i)<<16; |
| 284 | |
| 285 | if (err==UNZ_OK) |
| 286 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 287 | x += ((uLong)i)<<24; |
| 288 | |
| 289 | if (err==UNZ_OK) |
| 290 | *pX = x; |
| 291 | else |
| 292 | *pX = 0; |
| 293 | return err; |
| 294 | } |
| 295 | |
| 296 | local int unz64local_getLong64 OF(( |
| 297 | const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 298 | voidpf filestream, |
| 299 | ZPOS64_T *pX)); |
| 300 | |
| 301 | |
| 302 | local int unz64local_getLong64 (const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 303 | voidpf filestream, |
| 304 | ZPOS64_T *pX) |
| 305 | { |
| 306 | ZPOS64_T x ; |
| 307 | int i = 0; |
| 308 | int err; |
| 309 | |
| 310 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 311 | x = (ZPOS64_T)i; |
| 312 | |
| 313 | if (err==UNZ_OK) |
| 314 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 315 | x |= ((ZPOS64_T)i)<<8; |
| 316 | |
| 317 | if (err==UNZ_OK) |
| 318 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 319 | x |= ((ZPOS64_T)i)<<16; |
| 320 | |
| 321 | if (err==UNZ_OK) |
| 322 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 323 | x |= ((ZPOS64_T)i)<<24; |
| 324 | |
| 325 | if (err==UNZ_OK) |
| 326 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 327 | x |= ((ZPOS64_T)i)<<32; |
| 328 | |
| 329 | if (err==UNZ_OK) |
| 330 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 331 | x |= ((ZPOS64_T)i)<<40; |
| 332 | |
| 333 | if (err==UNZ_OK) |
| 334 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 335 | x |= ((ZPOS64_T)i)<<48; |
| 336 | |
| 337 | if (err==UNZ_OK) |
| 338 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); |
| 339 | x |= ((ZPOS64_T)i)<<56; |
| 340 | |
| 341 | if (err==UNZ_OK) |
| 342 | *pX = x; |
| 343 | else |
| 344 | *pX = 0; |
| 345 | return err; |
| 346 | } |
| 347 | |
| 348 | /* My own strcmpi / strcasecmp */ |
| 349 | local int strcmpcasenosensitive_internal (const char* fileName1, const char* fileName2) |
| 350 | { |
| 351 | for (;;) |
| 352 | { |
| 353 | char c1=*(fileName1++); |
| 354 | char c2=*(fileName2++); |
| 355 | if ((c1>='a') && (c1<='z')) |
| 356 | c1 -= 0x20; |
| 357 | if ((c2>='a') && (c2<='z')) |
| 358 | c2 -= 0x20; |
| 359 | if (c1=='\0') |
| 360 | return ((c2=='\0') ? 0 : -1); |
| 361 | if (c2=='\0') |
| 362 | return 1; |
| 363 | if (c1<c2) |
| 364 | return -1; |
| 365 | if (c1>c2) |
| 366 | return 1; |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | |
| 371 | #ifdef CASESENSITIVITYDEFAULT_NO |
| 372 | #define CASESENSITIVITYDEFAULTVALUE 2 |
| 373 | #else |
| 374 | #define CASESENSITIVITYDEFAULTVALUE 1 |
| 375 | #endif |
| 376 | |
| 377 | #ifndef STRCMPCASENOSENTIVEFUNCTION |
| 378 | #define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal |
| 379 | #endif |
| 380 | |
| 381 | /* |
| 382 | Compare two filename (fileName1,fileName2). |
| 383 | If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp) |
| 384 | If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi |
| 385 | or strcasecmp) |
| 386 | If iCaseSenisivity = 0, case sensitivity is defaut of your operating system |
| 387 | (like 1 on Unix, 2 on Windows) |
| 388 | |
| 389 | */ |
| 390 | extern int ZEXPORT unzStringFileNameCompare (const char* fileName1, |
| 391 | const char* fileName2, |
| 392 | int iCaseSensitivity) |
| 393 | |
| 394 | { |
| 395 | if (iCaseSensitivity==0) |
| 396 | iCaseSensitivity=CASESENSITIVITYDEFAULTVALUE; |
| 397 | |
| 398 | if (iCaseSensitivity==1) |
| 399 | return strcmp(fileName1,fileName2); |
| 400 | |
| 401 | return STRCMPCASENOSENTIVEFUNCTION(fileName1,fileName2); |
| 402 | } |
| 403 | |
| 404 | #ifndef BUFREADCOMMENT |
| 405 | #define BUFREADCOMMENT (0x400) |
| 406 | #endif |
| 407 | |
| 408 | /* |
| 409 | Locate the Central directory of a zipfile (at the end, just before |
| 410 | the global comment) |
| 411 | */ |
| 412 | local ZPOS64_T unz64local_SearchCentralDir OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream)); |
| 413 | local ZPOS64_T unz64local_SearchCentralDir(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) |
| 414 | { |
| 415 | unsigned char* buf; |
| 416 | ZPOS64_T uSizeFile; |
| 417 | ZPOS64_T uBackRead; |
| 418 | ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ |
| 419 | ZPOS64_T uPosFound=0; |
| 420 | |
| 421 | if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) |
| 422 | return 0; |
| 423 | |
| 424 | |
| 425 | uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); |
| 426 | |
| 427 | if (uMaxBack>uSizeFile) |
| 428 | uMaxBack = uSizeFile; |
| 429 | |
| 430 | buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); |
| 431 | if (buf==NULL) |
| 432 | return 0; |
| 433 | |
| 434 | uBackRead = 4; |
| 435 | while (uBackRead<uMaxBack) |
| 436 | { |
| 437 | uLong uReadSize; |
| 438 | ZPOS64_T uReadPos ; |
| 439 | int i; |
| 440 | if (uBackRead+BUFREADCOMMENT>uMaxBack) |
| 441 | uBackRead = uMaxBack; |
| 442 | else |
| 443 | uBackRead+=BUFREADCOMMENT; |
| 444 | uReadPos = uSizeFile-uBackRead ; |
| 445 | |
| 446 | uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? |
| 447 | (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); |
| 448 | if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 449 | break; |
| 450 | |
| 451 | if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) |
| 452 | break; |
| 453 | |
| 454 | for (i=(int)uReadSize-3; (i--)>0;) |
| 455 | if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && |
| 456 | ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06)) |
| 457 | { |
| 458 | uPosFound = uReadPos+i; |
| 459 | break; |
| 460 | } |
| 461 | |
| 462 | if (uPosFound!=0) |
| 463 | break; |
| 464 | } |
| 465 | TRYFREE(buf); |
| 466 | return uPosFound; |
| 467 | } |
| 468 | |
| 469 | |
| 470 | /* |
| 471 | Locate the Central directory 64 of a zipfile (at the end, just before |
| 472 | the global comment) |
| 473 | */ |
| 474 | local ZPOS64_T unz64local_SearchCentralDir64 OF(( |
| 475 | const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 476 | voidpf filestream)); |
| 477 | |
| 478 | local ZPOS64_T unz64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 479 | voidpf filestream) |
| 480 | { |
| 481 | unsigned char* buf; |
| 482 | ZPOS64_T uSizeFile; |
| 483 | ZPOS64_T uBackRead; |
| 484 | ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ |
| 485 | ZPOS64_T uPosFound=0; |
| 486 | uLong uL; |
| 487 | ZPOS64_T relativeOffset; |
| 488 | |
| 489 | if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) |
| 490 | return 0; |
| 491 | |
| 492 | |
| 493 | uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); |
| 494 | |
| 495 | if (uMaxBack>uSizeFile) |
| 496 | uMaxBack = uSizeFile; |
| 497 | |
| 498 | buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); |
| 499 | if (buf==NULL) |
| 500 | return 0; |
| 501 | |
| 502 | uBackRead = 4; |
| 503 | while (uBackRead<uMaxBack) |
| 504 | { |
| 505 | uLong uReadSize; |
| 506 | ZPOS64_T uReadPos; |
| 507 | int i; |
| 508 | if (uBackRead+BUFREADCOMMENT>uMaxBack) |
| 509 | uBackRead = uMaxBack; |
| 510 | else |
| 511 | uBackRead+=BUFREADCOMMENT; |
| 512 | uReadPos = uSizeFile-uBackRead ; |
| 513 | |
| 514 | uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? |
| 515 | (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); |
| 516 | if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 517 | break; |
| 518 | |
| 519 | if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) |
| 520 | break; |
| 521 | |
| 522 | for (i=(int)uReadSize-3; (i--)>0;) |
| 523 | if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && |
| 524 | ((*(buf+i+2))==0x06) && ((*(buf+i+3))==0x07)) |
| 525 | { |
| 526 | uPosFound = uReadPos+i; |
| 527 | break; |
| 528 | } |
| 529 | |
| 530 | if (uPosFound!=0) |
| 531 | break; |
| 532 | } |
| 533 | TRYFREE(buf); |
| 534 | if (uPosFound == 0) |
| 535 | return 0; |
| 536 | |
| 537 | /* Zip64 end of central directory locator */ |
| 538 | if (ZSEEK64(*pzlib_filefunc_def,filestream, uPosFound,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 539 | return 0; |
| 540 | |
| 541 | /* the signature, already checked */ |
| 542 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) |
| 543 | return 0; |
| 544 | |
| 545 | /* number of the disk with the start of the zip64 end of central directory */ |
| 546 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) |
| 547 | return 0; |
| 548 | if (uL != 0) |
| 549 | return 0; |
| 550 | |
| 551 | /* relative offset of the zip64 end of central directory record */ |
| 552 | if (unz64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=UNZ_OK) |
| 553 | return 0; |
| 554 | |
| 555 | /* total number of disks */ |
| 556 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) |
| 557 | return 0; |
| 558 | if (uL != 1) |
| 559 | return 0; |
| 560 | |
| 561 | /* Goto end of central directory record */ |
| 562 | if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 563 | return 0; |
| 564 | |
| 565 | /* the signature */ |
| 566 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) |
| 567 | return 0; |
| 568 | |
| 569 | if (uL != 0x06064b50) |
| 570 | return 0; |
| 571 | |
| 572 | return relativeOffset; |
| 573 | } |
| 574 | |
| 575 | /* |
| 576 | Open a Zip file. path contain the full pathname (by example, |
| 577 | on a Windows NT computer "c:\\test\\zlib114.zip" or on an Unix computer |
| 578 | "zlib/zlib114.zip". |
| 579 | If the zipfile cannot be opened (file doesn't exist or in not valid), the |
| 580 | return value is NULL. |
| 581 | Else, the return value is a unzFile Handle, usable with other function |
| 582 | of this unzip package. |
| 583 | */ |
| 584 | local unzFile unzOpenInternal (const void *path, |
| 585 | zlib_filefunc64_32_def* pzlib_filefunc64_32_def, |
| 586 | int is64bitOpenFunction) |
| 587 | { |
| 588 | unz64_s us; |
| 589 | unz64_s *s; |
| 590 | ZPOS64_T central_pos; |
| 591 | uLong uL; |
| 592 | |
| 593 | uLong number_disk; /* number of the current dist, used for |
| 594 | spaning ZIP, unsupported, always 0*/ |
| 595 | uLong number_disk_with_CD; /* number the the disk with central dir, used |
| 596 | for spaning ZIP, unsupported, always 0*/ |
| 597 | ZPOS64_T number_entry_CD; /* total number of entries in |
| 598 | the central dir |
| 599 | (same than number_entry on nospan) */ |
| 600 | |
| 601 | int err=UNZ_OK; |
| 602 | |
| 603 | if (unz_copyright[0]!=' ') |
| 604 | return NULL; |
| 605 | |
| 606 | us.z_filefunc.zseek32_file = NULL; |
| 607 | us.z_filefunc.ztell32_file = NULL; |
| 608 | if (pzlib_filefunc64_32_def==NULL) |
| 609 | fill_fopen64_filefunc(&us.z_filefunc.zfile_func64); |
| 610 | else |
| 611 | us.z_filefunc = *pzlib_filefunc64_32_def; |
| 612 | us.is64bitOpenFunction = is64bitOpenFunction; |
| 613 | |
| 614 | |
| 615 | |
| 616 | us.filestream = ZOPEN64(us.z_filefunc, |
| 617 | path, |
| 618 | ZLIB_FILEFUNC_MODE_READ | |
| 619 | ZLIB_FILEFUNC_MODE_EXISTING); |
| 620 | if (us.filestream==NULL) |
| 621 | return NULL; |
| 622 | |
| 623 | central_pos = unz64local_SearchCentralDir64(&us.z_filefunc,us.filestream); |
| 624 | if (central_pos) |
| 625 | { |
| 626 | uLong uS; |
| 627 | ZPOS64_T uL64; |
| 628 | |
| 629 | us.isZip64 = 1; |
| 630 | |
| 631 | if (ZSEEK64(us.z_filefunc, us.filestream, |
| 632 | central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 633 | err=UNZ_ERRNO; |
| 634 | |
| 635 | /* the signature, already checked */ |
| 636 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 637 | err=UNZ_ERRNO; |
| 638 | |
| 639 | /* size of zip64 end of central directory record */ |
| 640 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&uL64)!=UNZ_OK) |
| 641 | err=UNZ_ERRNO; |
| 642 | |
| 643 | /* version made by */ |
| 644 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK) |
| 645 | err=UNZ_ERRNO; |
| 646 | |
| 647 | /* version needed to extract */ |
| 648 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK) |
| 649 | err=UNZ_ERRNO; |
| 650 | |
| 651 | /* number of this disk */ |
| 652 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK) |
| 653 | err=UNZ_ERRNO; |
| 654 | |
| 655 | /* number of the disk with the start of the central directory */ |
| 656 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK) |
| 657 | err=UNZ_ERRNO; |
| 658 | |
| 659 | /* total number of entries in the central directory on this disk */ |
| 660 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK) |
| 661 | err=UNZ_ERRNO; |
| 662 | |
| 663 | /* total number of entries in the central directory */ |
| 664 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&number_entry_CD)!=UNZ_OK) |
| 665 | err=UNZ_ERRNO; |
| 666 | |
| 667 | if ((number_entry_CD!=us.gi.number_entry) || |
| 668 | (number_disk_with_CD!=0) || |
| 669 | (number_disk!=0)) |
| 670 | err=UNZ_BADZIPFILE; |
| 671 | |
| 672 | /* size of the central directory */ |
| 673 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.size_central_dir)!=UNZ_OK) |
| 674 | err=UNZ_ERRNO; |
| 675 | |
| 676 | /* offset of start of central directory with respect to the |
| 677 | starting disk number */ |
| 678 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK) |
| 679 | err=UNZ_ERRNO; |
| 680 | |
| 681 | us.gi.size_comment = 0; |
| 682 | } |
| 683 | else |
| 684 | { |
| 685 | central_pos = unz64local_SearchCentralDir(&us.z_filefunc,us.filestream); |
| 686 | if (central_pos==0) |
| 687 | err=UNZ_ERRNO; |
| 688 | |
| 689 | us.isZip64 = 0; |
| 690 | |
| 691 | if (ZSEEK64(us.z_filefunc, us.filestream, |
| 692 | central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 693 | err=UNZ_ERRNO; |
| 694 | |
| 695 | /* the signature, already checked */ |
| 696 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 697 | err=UNZ_ERRNO; |
| 698 | |
| 699 | /* number of this disk */ |
| 700 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK) |
| 701 | err=UNZ_ERRNO; |
| 702 | |
| 703 | /* number of the disk with the start of the central directory */ |
| 704 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK) |
| 705 | err=UNZ_ERRNO; |
| 706 | |
| 707 | /* total number of entries in the central dir on this disk */ |
| 708 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 709 | err=UNZ_ERRNO; |
| 710 | us.gi.number_entry = uL; |
| 711 | |
| 712 | /* total number of entries in the central dir */ |
| 713 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 714 | err=UNZ_ERRNO; |
| 715 | number_entry_CD = uL; |
| 716 | |
| 717 | if ((number_entry_CD!=us.gi.number_entry) || |
| 718 | (number_disk_with_CD!=0) || |
| 719 | (number_disk!=0)) |
| 720 | err=UNZ_BADZIPFILE; |
| 721 | |
| 722 | /* size of the central directory */ |
| 723 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 724 | err=UNZ_ERRNO; |
| 725 | us.size_central_dir = uL; |
| 726 | |
| 727 | /* offset of start of central directory with respect to the |
| 728 | starting disk number */ |
| 729 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 730 | err=UNZ_ERRNO; |
| 731 | us.offset_central_dir = uL; |
| 732 | |
| 733 | /* zipfile comment length */ |
| 734 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&us.gi.size_comment)!=UNZ_OK) |
| 735 | err=UNZ_ERRNO; |
| 736 | } |
| 737 | |
| 738 | if ((central_pos<us.offset_central_dir+us.size_central_dir) && |
| 739 | (err==UNZ_OK)) |
| 740 | err=UNZ_BADZIPFILE; |
| 741 | |
| 742 | if (err!=UNZ_OK) |
| 743 | { |
| 744 | ZCLOSE64(us.z_filefunc, us.filestream); |
| 745 | return NULL; |
| 746 | } |
| 747 | |
| 748 | us.byte_before_the_zipfile = central_pos - |
| 749 | (us.offset_central_dir+us.size_central_dir); |
| 750 | us.central_pos = central_pos; |
| 751 | us.pfile_in_zip_read = NULL; |
| 752 | us.encrypted = 0; |
| 753 | |
| 754 | |
| 755 | s=(unz64_s*)ALLOC(sizeof(unz64_s)); |
| 756 | if( s != NULL) |
| 757 | { |
| 758 | *s=us; |
| 759 | unzGoToFirstFile((unzFile)s); |
| 760 | } |
| 761 | return (unzFile)s; |
| 762 | } |
| 763 | |
| 764 | |
| 765 | extern unzFile ZEXPORT unzOpen2 (const char *path, |
| 766 | zlib_filefunc_def* pzlib_filefunc32_def) |
| 767 | { |
| 768 | if (pzlib_filefunc32_def != NULL) |
| 769 | { |
| 770 | zlib_filefunc64_32_def zlib_filefunc64_32_def_fill; |
| 771 | fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill,pzlib_filefunc32_def); |
| 772 | return unzOpenInternal(path, &zlib_filefunc64_32_def_fill, 0); |
| 773 | } |
| 774 | else |
| 775 | return unzOpenInternal(path, NULL, 0); |
| 776 | } |
| 777 | |
| 778 | extern unzFile ZEXPORT unzOpen2_64 (const void *path, |
| 779 | zlib_filefunc64_def* pzlib_filefunc_def) |
| 780 | { |
| 781 | if (pzlib_filefunc_def != NULL) |
| 782 | { |
| 783 | zlib_filefunc64_32_def zlib_filefunc64_32_def_fill; |
| 784 | zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def; |
| 785 | zlib_filefunc64_32_def_fill.ztell32_file = NULL; |
| 786 | zlib_filefunc64_32_def_fill.zseek32_file = NULL; |
| 787 | return unzOpenInternal(path, &zlib_filefunc64_32_def_fill, 1); |
| 788 | } |
| 789 | else |
| 790 | return unzOpenInternal(path, NULL, 1); |
| 791 | } |
| 792 | |
| 793 | extern unzFile ZEXPORT unzOpen (const char *path) |
| 794 | { |
| 795 | return unzOpenInternal(path, NULL, 0); |
| 796 | } |
| 797 | |
| 798 | extern unzFile ZEXPORT unzOpen64 (const void *path) |
| 799 | { |
| 800 | return unzOpenInternal(path, NULL, 1); |
| 801 | } |
| 802 | |
| 803 | /* |
| 804 | Close a ZipFile opened with unzipOpen. |
| 805 | If there is files inside the .Zip opened with unzipOpenCurrentFile (see later), |
| 806 | these files MUST be closed with unzipCloseCurrentFile before call unzipClose. |
| 807 | return UNZ_OK if there is no problem. */ |
| 808 | extern int ZEXPORT unzClose (unzFile file) |
| 809 | { |
| 810 | unz64_s* s; |
| 811 | if (file==NULL) |
| 812 | return UNZ_PARAMERROR; |
| 813 | s=(unz64_s*)file; |
| 814 | |
| 815 | if (s->pfile_in_zip_read!=NULL) |
| 816 | unzCloseCurrentFile(file); |
| 817 | |
| 818 | ZCLOSE64(s->z_filefunc, s->filestream); |
| 819 | TRYFREE(s); |
| 820 | return UNZ_OK; |
| 821 | } |
| 822 | |
| 823 | |
| 824 | /* |
| 825 | Write info about the ZipFile in the *pglobal_info structure. |
| 826 | No preparation of the structure is needed |
| 827 | return UNZ_OK if there is no problem. */ |
| 828 | extern int ZEXPORT unzGetGlobalInfo64 (unzFile file, unz_global_info64* pglobal_info) |
| 829 | { |
| 830 | unz64_s* s; |
| 831 | if (file==NULL) |
| 832 | return UNZ_PARAMERROR; |
| 833 | s=(unz64_s*)file; |
| 834 | *pglobal_info=s->gi; |
| 835 | return UNZ_OK; |
| 836 | } |
| 837 | |
| 838 | extern int ZEXPORT unzGetGlobalInfo (unzFile file, unz_global_info* pglobal_info32) |
| 839 | { |
| 840 | unz64_s* s; |
| 841 | if (file==NULL) |
| 842 | return UNZ_PARAMERROR; |
| 843 | s=(unz64_s*)file; |
| 844 | /* to do : check if number_entry is not truncated */ |
| 845 | pglobal_info32->number_entry = (uLong)s->gi.number_entry; |
| 846 | pglobal_info32->size_comment = s->gi.size_comment; |
| 847 | return UNZ_OK; |
| 848 | } |
| 849 | /* |
| 850 | Translate date/time from Dos format to tm_unz (readable more easilty) |
| 851 | */ |
| 852 | local void unz64local_DosDateToTmuDate (ZPOS64_T ulDosDate, tm_unz* ptm) |
| 853 | { |
| 854 | ZPOS64_T uDate; |
| 855 | uDate = (ZPOS64_T)(ulDosDate>>16); |
| 856 | ptm->tm_mday = (uInt)(uDate&0x1f) ; |
| 857 | ptm->tm_mon = (uInt)((((uDate)&0x1E0)/0x20)-1) ; |
| 858 | ptm->tm_year = (uInt)(((uDate&0x0FE00)/0x0200)+1980) ; |
| 859 | |
| 860 | ptm->tm_hour = (uInt) ((ulDosDate &0xF800)/0x800); |
| 861 | ptm->tm_min = (uInt) ((ulDosDate&0x7E0)/0x20) ; |
| 862 | ptm->tm_sec = (uInt) (2*(ulDosDate&0x1f)) ; |
| 863 | } |
| 864 | |
| 865 | /* |
| 866 | Get Info about the current file in the zipfile, with internal only info |
| 867 | */ |
| 868 | local int unz64local_GetCurrentFileInfoInternal OF((unzFile file, |
| 869 | unz_file_info64 *pfile_info, |
| 870 | unz_file_info64_internal |
| 871 | *pfile_info_internal, |
| 872 | char *szFileName, |
| 873 | uLong fileNameBufferSize, |
| 874 | void *extraField, |
| 875 | uLong extraFieldBufferSize, |
| 876 | char *szComment, |
| 877 | uLong commentBufferSize)); |
| 878 | |
| 879 | local int unz64local_GetCurrentFileInfoInternal (unzFile file, |
| 880 | unz_file_info64 *pfile_info, |
| 881 | unz_file_info64_internal |
| 882 | *pfile_info_internal, |
| 883 | char *szFileName, |
| 884 | uLong fileNameBufferSize, |
| 885 | void *extraField, |
| 886 | uLong extraFieldBufferSize, |
| 887 | char *szComment, |
| 888 | uLong commentBufferSize) |
| 889 | { |
| 890 | unz64_s* s; |
| 891 | unz_file_info64 file_info; |
| 892 | unz_file_info64_internal file_info_internal; |
| 893 | int err=UNZ_OK; |
| 894 | uLong uMagic; |
| 895 | long lSeek=0; |
| 896 | uLong uL; |
| 897 | |
| 898 | if (file==NULL) |
| 899 | return UNZ_PARAMERROR; |
| 900 | s=(unz64_s*)file; |
| 901 | if (ZSEEK64(s->z_filefunc, s->filestream, |
| 902 | s->pos_in_central_dir+s->byte_before_the_zipfile, |
| 903 | ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 904 | err=UNZ_ERRNO; |
| 905 | |
| 906 | |
| 907 | /* we check the magic */ |
| 908 | if (err==UNZ_OK) |
| 909 | { |
| 910 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK) |
| 911 | err=UNZ_ERRNO; |
| 912 | else if (uMagic!=0x02014b50) |
| 913 | err=UNZ_BADZIPFILE; |
| 914 | } |
| 915 | |
| 916 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK) |
| 917 | err=UNZ_ERRNO; |
| 918 | |
| 919 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK) |
| 920 | err=UNZ_ERRNO; |
| 921 | |
| 922 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK) |
| 923 | err=UNZ_ERRNO; |
| 924 | |
| 925 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK) |
| 926 | err=UNZ_ERRNO; |
| 927 | |
| 928 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK) |
| 929 | err=UNZ_ERRNO; |
| 930 | |
| 931 | unz64local_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date); |
| 932 | |
| 933 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK) |
| 934 | err=UNZ_ERRNO; |
| 935 | |
| 936 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) |
| 937 | err=UNZ_ERRNO; |
| 938 | file_info.compressed_size = uL; |
| 939 | |
| 940 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) |
| 941 | err=UNZ_ERRNO; |
| 942 | file_info.uncompressed_size = uL; |
| 943 | |
| 944 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK) |
| 945 | err=UNZ_ERRNO; |
| 946 | |
| 947 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK) |
| 948 | err=UNZ_ERRNO; |
| 949 | |
| 950 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK) |
| 951 | err=UNZ_ERRNO; |
| 952 | |
| 953 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK) |
| 954 | err=UNZ_ERRNO; |
| 955 | |
| 956 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK) |
| 957 | err=UNZ_ERRNO; |
| 958 | |
| 959 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK) |
| 960 | err=UNZ_ERRNO; |
| 961 | |
| 962 | // relative offset of local header |
| 963 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) |
| 964 | err=UNZ_ERRNO; |
| 965 | file_info_internal.offset_curfile = uL; |
| 966 | |
| 967 | lSeek+=file_info.size_filename; |
| 968 | if ((err==UNZ_OK) && (szFileName!=NULL)) |
| 969 | { |
| 970 | uLong uSizeRead ; |
| 971 | if (file_info.size_filename<fileNameBufferSize) |
| 972 | { |
| 973 | *(szFileName+file_info.size_filename)='\0'; |
| 974 | uSizeRead = file_info.size_filename; |
| 975 | } |
| 976 | else |
| 977 | uSizeRead = fileNameBufferSize; |
| 978 | |
| 979 | if ((file_info.size_filename>0) && (fileNameBufferSize>0)) |
| 980 | if (ZREAD64(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead) |
| 981 | err=UNZ_ERRNO; |
| 982 | lSeek -= uSizeRead; |
| 983 | } |
| 984 | |
| 985 | // Read extrafield |
| 986 | if ((err==UNZ_OK) && (extraField!=NULL)) |
| 987 | { |
| 988 | ZPOS64_T uSizeRead ; |
| 989 | if (file_info.size_file_extra<extraFieldBufferSize) |
| 990 | uSizeRead = file_info.size_file_extra; |
| 991 | else |
| 992 | uSizeRead = extraFieldBufferSize; |
| 993 | |
| 994 | if (lSeek!=0) |
| 995 | { |
| 996 | if (ZSEEK64(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) |
| 997 | lSeek=0; |
| 998 | else |
| 999 | err=UNZ_ERRNO; |
| 1000 | } |
| 1001 | |
| 1002 | if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0)) |
| 1003 | if (ZREAD64(s->z_filefunc, s->filestream,extraField,(uLong)uSizeRead)!=uSizeRead) |
| 1004 | err=UNZ_ERRNO; |
| 1005 | |
| 1006 | lSeek += file_info.size_file_extra - (uLong)uSizeRead; |
| 1007 | } |
| 1008 | else |
| 1009 | lSeek += file_info.size_file_extra; |
| 1010 | |
| 1011 | |
| 1012 | if ((err==UNZ_OK) && (file_info.size_file_extra != 0)) |
| 1013 | { |
| 1014 | uLong acc = 0; |
| 1015 | |
| 1016 | // since lSeek now points to after the extra field we need to move back |
| 1017 | lSeek -= file_info.size_file_extra; |
| 1018 | |
| 1019 | if (lSeek!=0) |
| 1020 | { |
| 1021 | if (ZSEEK64(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) |
| 1022 | lSeek=0; |
| 1023 | else |
| 1024 | err=UNZ_ERRNO; |
| 1025 | } |
| 1026 | |
| 1027 | while(acc < file_info.size_file_extra) |
| 1028 | { |
| 1029 | uLong headerId; |
| 1030 | uLong dataSize; |
| 1031 | |
| 1032 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&headerId) != UNZ_OK) |
| 1033 | err=UNZ_ERRNO; |
| 1034 | |
| 1035 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&dataSize) != UNZ_OK) |
| 1036 | err=UNZ_ERRNO; |
| 1037 | |
| 1038 | /* ZIP64 extra fields */ |
| 1039 | if (headerId == 0x0001) |
| 1040 | { |
| 1041 | uLong uL; |
| 1042 | |
| 1043 | if(file_info.uncompressed_size == MAXU32) |
| 1044 | { |
| 1045 | if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK) |
| 1046 | err=UNZ_ERRNO; |
| 1047 | } |
| 1048 | |
| 1049 | if(file_info.compressed_size == MAXU32) |
| 1050 | { |
| 1051 | if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK) |
| 1052 | err=UNZ_ERRNO; |
| 1053 | } |
| 1054 | |
| 1055 | if(file_info_internal.offset_curfile == MAXU32) |
| 1056 | { |
| 1057 | /* Relative Header offset */ |
| 1058 | if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK) |
| 1059 | err=UNZ_ERRNO; |
| 1060 | } |
| 1061 | |
| 1062 | if(file_info.disk_num_start == MAXU32) |
| 1063 | { |
| 1064 | /* Disk Start Number */ |
| 1065 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) |
| 1066 | err=UNZ_ERRNO; |
| 1067 | } |
| 1068 | |
| 1069 | } |
| 1070 | else |
| 1071 | { |
| 1072 | if (ZSEEK64(s->z_filefunc, s->filestream,dataSize,ZLIB_FILEFUNC_SEEK_CUR)!=0) |
| 1073 | err=UNZ_ERRNO; |
| 1074 | } |
| 1075 | |
| 1076 | acc += 2 + 2 + dataSize; |
| 1077 | } |
| 1078 | } |
| 1079 | |
| 1080 | if ((err==UNZ_OK) && (szComment!=NULL)) |
| 1081 | { |
| 1082 | uLong uSizeRead ; |
| 1083 | if (file_info.size_file_comment<commentBufferSize) |
| 1084 | { |
| 1085 | *(szComment+file_info.size_file_comment)='\0'; |
| 1086 | uSizeRead = file_info.size_file_comment; |
| 1087 | } |
| 1088 | else |
| 1089 | uSizeRead = commentBufferSize; |
| 1090 | |
| 1091 | if (lSeek!=0) |
| 1092 | { |
| 1093 | if (ZSEEK64(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) |
| 1094 | lSeek=0; |
| 1095 | else |
| 1096 | err=UNZ_ERRNO; |
| 1097 | } |
| 1098 | |
| 1099 | if ((file_info.size_file_comment>0) && (commentBufferSize>0)) |
| 1100 | if (ZREAD64(s->z_filefunc, s->filestream,szComment,uSizeRead)!=uSizeRead) |
| 1101 | err=UNZ_ERRNO; |
| 1102 | lSeek+=file_info.size_file_comment - uSizeRead; |
| 1103 | } |
| 1104 | else |
| 1105 | lSeek+=file_info.size_file_comment; |
| 1106 | |
| 1107 | |
| 1108 | if ((err==UNZ_OK) && (pfile_info!=NULL)) |
| 1109 | *pfile_info=file_info; |
| 1110 | |
| 1111 | if ((err==UNZ_OK) && (pfile_info_internal!=NULL)) |
| 1112 | *pfile_info_internal=file_info_internal; |
| 1113 | |
| 1114 | return err; |
| 1115 | } |
| 1116 | |
| 1117 | |
| 1118 | |
| 1119 | /* |
| 1120 | Write info about the ZipFile in the *pglobal_info structure. |
| 1121 | No preparation of the structure is needed |
| 1122 | return UNZ_OK if there is no problem. |
| 1123 | */ |
| 1124 | extern int ZEXPORT unzGetCurrentFileInfo64 (unzFile file, |
| 1125 | unz_file_info64 * pfile_info, |
| 1126 | char * szFileName, uLong fileNameBufferSize, |
| 1127 | void *extraField, uLong extraFieldBufferSize, |
| 1128 | char* szComment, uLong commentBufferSize) |
| 1129 | { |
| 1130 | return unz64local_GetCurrentFileInfoInternal(file,pfile_info,NULL, |
| 1131 | szFileName,fileNameBufferSize, |
| 1132 | extraField,extraFieldBufferSize, |
| 1133 | szComment,commentBufferSize); |
| 1134 | } |
| 1135 | |
| 1136 | extern int ZEXPORT unzGetCurrentFileInfo (unzFile file, |
| 1137 | unz_file_info * pfile_info, |
| 1138 | char * szFileName, uLong fileNameBufferSize, |
| 1139 | void *extraField, uLong extraFieldBufferSize, |
| 1140 | char* szComment, uLong commentBufferSize) |
| 1141 | { |
| 1142 | int err; |
| 1143 | unz_file_info64 file_info64; |
| 1144 | err = unz64local_GetCurrentFileInfoInternal(file,&file_info64,NULL, |
| 1145 | szFileName,fileNameBufferSize, |
| 1146 | extraField,extraFieldBufferSize, |
| 1147 | szComment,commentBufferSize); |
| 1148 | if ((err==UNZ_OK) && (pfile_info != NULL)) |
| 1149 | { |
| 1150 | pfile_info->version = file_info64.version; |
| 1151 | pfile_info->version_needed = file_info64.version_needed; |
| 1152 | pfile_info->flag = file_info64.flag; |
| 1153 | pfile_info->compression_method = file_info64.compression_method; |
| 1154 | pfile_info->dosDate = file_info64.dosDate; |
| 1155 | pfile_info->crc = file_info64.crc; |
| 1156 | |
| 1157 | pfile_info->size_filename = file_info64.size_filename; |
| 1158 | pfile_info->size_file_extra = file_info64.size_file_extra; |
| 1159 | pfile_info->size_file_comment = file_info64.size_file_comment; |
| 1160 | |
| 1161 | pfile_info->disk_num_start = file_info64.disk_num_start; |
| 1162 | pfile_info->internal_fa = file_info64.internal_fa; |
| 1163 | pfile_info->external_fa = file_info64.external_fa; |
| 1164 | |
| 1165 | pfile_info->tmu_date = file_info64.tmu_date, |
| 1166 | |
| 1167 | |
| 1168 | pfile_info->compressed_size = (uLong)file_info64.compressed_size; |
| 1169 | pfile_info->uncompressed_size = (uLong)file_info64.uncompressed_size; |
| 1170 | |
| 1171 | } |
| 1172 | return err; |
| 1173 | } |
| 1174 | /* |
| 1175 | Set the current file of the zipfile to the first file. |
| 1176 | return UNZ_OK if there is no problem |
| 1177 | */ |
| 1178 | extern int ZEXPORT unzGoToFirstFile (unzFile file) |
| 1179 | { |
| 1180 | int err=UNZ_OK; |
| 1181 | unz64_s* s; |
| 1182 | if (file==NULL) |
| 1183 | return UNZ_PARAMERROR; |
| 1184 | s=(unz64_s*)file; |
| 1185 | s->pos_in_central_dir=s->offset_central_dir; |
| 1186 | s->num_file=0; |
| 1187 | err=unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, |
| 1188 | &s->cur_file_info_internal, |
| 1189 | NULL,0,NULL,0,NULL,0); |
| 1190 | s->current_file_ok = (err == UNZ_OK); |
| 1191 | return err; |
| 1192 | } |
| 1193 | |
| 1194 | /* |
| 1195 | Set the current file of the zipfile to the next file. |
| 1196 | return UNZ_OK if there is no problem |
| 1197 | return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest. |
| 1198 | */ |
| 1199 | extern int ZEXPORT unzGoToNextFile (unzFile file) |
| 1200 | { |
| 1201 | unz64_s* s; |
| 1202 | int err; |
| 1203 | |
| 1204 | if (file==NULL) |
| 1205 | return UNZ_PARAMERROR; |
| 1206 | s=(unz64_s*)file; |
| 1207 | if (!s->current_file_ok) |
| 1208 | return UNZ_END_OF_LIST_OF_FILE; |
| 1209 | if (s->gi.number_entry != 0xffff) /* 2^16 files overflow hack */ |
| 1210 | if (s->num_file+1==s->gi.number_entry) |
| 1211 | return UNZ_END_OF_LIST_OF_FILE; |
| 1212 | |
| 1213 | s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename + |
| 1214 | s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment ; |
| 1215 | s->num_file++; |
| 1216 | err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, |
| 1217 | &s->cur_file_info_internal, |
| 1218 | NULL,0,NULL,0,NULL,0); |
| 1219 | s->current_file_ok = (err == UNZ_OK); |
| 1220 | return err; |
| 1221 | } |
| 1222 | |
| 1223 | |
| 1224 | /* |
| 1225 | Try locate the file szFileName in the zipfile. |
| 1226 | For the iCaseSensitivity signification, see unzipStringFileNameCompare |
| 1227 | |
| 1228 | return value : |
| 1229 | UNZ_OK if the file is found. It becomes the current file. |
| 1230 | UNZ_END_OF_LIST_OF_FILE if the file is not found |
| 1231 | */ |
| 1232 | extern int ZEXPORT unzLocateFile (unzFile file, const char *szFileName, int iCaseSensitivity) |
| 1233 | { |
| 1234 | unz64_s* s; |
| 1235 | int err; |
| 1236 | |
| 1237 | /* We remember the 'current' position in the file so that we can jump |
| 1238 | * back there if we fail. |
| 1239 | */ |
| 1240 | unz_file_info64 cur_file_infoSaved; |
| 1241 | unz_file_info64_internal cur_file_info_internalSaved; |
| 1242 | ZPOS64_T num_fileSaved; |
| 1243 | ZPOS64_T pos_in_central_dirSaved; |
| 1244 | |
| 1245 | |
| 1246 | if (file==NULL) |
| 1247 | return UNZ_PARAMERROR; |
| 1248 | |
| 1249 | if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP) |
| 1250 | return UNZ_PARAMERROR; |
| 1251 | |
| 1252 | s=(unz64_s*)file; |
| 1253 | if (!s->current_file_ok) |
| 1254 | return UNZ_END_OF_LIST_OF_FILE; |
| 1255 | |
| 1256 | /* Save the current state */ |
| 1257 | num_fileSaved = s->num_file; |
| 1258 | pos_in_central_dirSaved = s->pos_in_central_dir; |
| 1259 | cur_file_infoSaved = s->cur_file_info; |
| 1260 | cur_file_info_internalSaved = s->cur_file_info_internal; |
| 1261 | |
| 1262 | err = unzGoToFirstFile(file); |
| 1263 | |
| 1264 | while (err == UNZ_OK) |
| 1265 | { |
| 1266 | char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1]; |
| 1267 | err = unzGetCurrentFileInfo64(file,NULL, |
| 1268 | szCurrentFileName,sizeof(szCurrentFileName)-1, |
| 1269 | NULL,0,NULL,0); |
| 1270 | if (err == UNZ_OK) |
| 1271 | { |
| 1272 | if (unzStringFileNameCompare(szCurrentFileName, |
| 1273 | szFileName,iCaseSensitivity)==0) |
| 1274 | return UNZ_OK; |
| 1275 | err = unzGoToNextFile(file); |
| 1276 | } |
| 1277 | } |
| 1278 | |
| 1279 | /* We failed, so restore the state of the 'current file' to where we |
| 1280 | * were. |
| 1281 | */ |
| 1282 | s->num_file = num_fileSaved ; |
| 1283 | s->pos_in_central_dir = pos_in_central_dirSaved ; |
| 1284 | s->cur_file_info = cur_file_infoSaved; |
| 1285 | s->cur_file_info_internal = cur_file_info_internalSaved; |
| 1286 | return err; |
| 1287 | } |
| 1288 | |
| 1289 | |
| 1290 | /* |
| 1291 | /////////////////////////////////////////// |
| 1292 | // Contributed by Ryan Haksi (mailto://cryogen@infoserve.net) |
| 1293 | // I need random access |
| 1294 | // |
| 1295 | // Further optimization could be realized by adding an ability |
| 1296 | // to cache the directory in memory. The goal being a single |
| 1297 | // comprehensive file read to put the file I need in a memory. |
| 1298 | */ |
| 1299 | |
| 1300 | /* |
| 1301 | typedef struct unz_file_pos_s |
| 1302 | { |
| 1303 | ZPOS64_T pos_in_zip_directory; // offset in file |
| 1304 | ZPOS64_T num_of_file; // # of file |
| 1305 | } unz_file_pos; |
| 1306 | */ |
| 1307 | |
| 1308 | extern int ZEXPORT unzGetFilePos64(unzFile file, unz64_file_pos* file_pos) |
| 1309 | { |
| 1310 | unz64_s* s; |
| 1311 | |
| 1312 | if (file==NULL || file_pos==NULL) |
| 1313 | return UNZ_PARAMERROR; |
| 1314 | s=(unz64_s*)file; |
| 1315 | if (!s->current_file_ok) |
| 1316 | return UNZ_END_OF_LIST_OF_FILE; |
| 1317 | |
| 1318 | file_pos->pos_in_zip_directory = s->pos_in_central_dir; |
| 1319 | file_pos->num_of_file = s->num_file; |
| 1320 | |
| 1321 | return UNZ_OK; |
| 1322 | } |
| 1323 | |
| 1324 | extern int ZEXPORT unzGetFilePos( |
| 1325 | unzFile file, |
| 1326 | unz_file_pos* file_pos) |
| 1327 | { |
| 1328 | unz64_file_pos file_pos64; |
| 1329 | int err = unzGetFilePos64(file,&file_pos64); |
| 1330 | if (err==UNZ_OK) |
| 1331 | { |
| 1332 | file_pos->pos_in_zip_directory = (uLong)file_pos64.pos_in_zip_directory; |
| 1333 | file_pos->num_of_file = (uLong)file_pos64.num_of_file; |
| 1334 | } |
| 1335 | return err; |
| 1336 | } |
| 1337 | |
| 1338 | extern int ZEXPORT unzGoToFilePos64(unzFile file, const unz64_file_pos* file_pos) |
| 1339 | { |
| 1340 | unz64_s* s; |
| 1341 | int err; |
| 1342 | |
| 1343 | if (file==NULL || file_pos==NULL) |
| 1344 | return UNZ_PARAMERROR; |
| 1345 | s=(unz64_s*)file; |
| 1346 | |
| 1347 | /* jump to the right spot */ |
| 1348 | s->pos_in_central_dir = file_pos->pos_in_zip_directory; |
| 1349 | s->num_file = file_pos->num_of_file; |
| 1350 | |
| 1351 | /* set the current file */ |
| 1352 | err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, |
| 1353 | &s->cur_file_info_internal, |
| 1354 | NULL,0,NULL,0,NULL,0); |
| 1355 | /* return results */ |
| 1356 | s->current_file_ok = (err == UNZ_OK); |
| 1357 | return err; |
| 1358 | } |
| 1359 | |
| 1360 | extern int ZEXPORT unzGoToFilePos( |
| 1361 | unzFile file, |
| 1362 | unz_file_pos* file_pos) |
| 1363 | { |
| 1364 | unz64_file_pos file_pos64; |
| 1365 | if (file_pos == NULL) |
| 1366 | return UNZ_PARAMERROR; |
| 1367 | |
| 1368 | file_pos64.pos_in_zip_directory = file_pos->pos_in_zip_directory; |
| 1369 | file_pos64.num_of_file = file_pos->num_of_file; |
| 1370 | return unzGoToFilePos64(file,&file_pos64); |
| 1371 | } |
| 1372 | |
| 1373 | /* |
| 1374 | // Unzip Helper Functions - should be here? |
| 1375 | /////////////////////////////////////////// |
| 1376 | */ |
| 1377 | |
| 1378 | /* |
| 1379 | Read the local header of the current zipfile |
| 1380 | Check the coherency of the local header and info in the end of central |
| 1381 | directory about this file |
| 1382 | store in *piSizeVar the size of extra info in local header |
| 1383 | (filename and size of extra field data) |
| 1384 | */ |
| 1385 | local int unz64local_CheckCurrentFileCoherencyHeader (unz64_s* s, uInt* piSizeVar, |
| 1386 | ZPOS64_T * poffset_local_extrafield, |
| 1387 | uInt * psize_local_extrafield) |
| 1388 | { |
| 1389 | uLong uMagic,uData,uFlags; |
| 1390 | uLong size_filename; |
| 1391 | uLong size_extra_field; |
| 1392 | int err=UNZ_OK; |
| 1393 | |
| 1394 | *piSizeVar = 0; |
| 1395 | *poffset_local_extrafield = 0; |
| 1396 | *psize_local_extrafield = 0; |
| 1397 | |
| 1398 | if (ZSEEK64(s->z_filefunc, s->filestream,s->cur_file_info_internal.offset_curfile + |
| 1399 | s->byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 1400 | return UNZ_ERRNO; |
| 1401 | |
| 1402 | |
| 1403 | if (err==UNZ_OK) |
| 1404 | { |
| 1405 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK) |
| 1406 | err=UNZ_ERRNO; |
| 1407 | else if (uMagic!=0x04034b50) |
| 1408 | err=UNZ_BADZIPFILE; |
| 1409 | } |
| 1410 | |
| 1411 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) |
| 1412 | err=UNZ_ERRNO; |
| 1413 | /* |
| 1414 | else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion)) |
| 1415 | err=UNZ_BADZIPFILE; |
| 1416 | */ |
| 1417 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK) |
| 1418 | err=UNZ_ERRNO; |
| 1419 | |
| 1420 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) |
| 1421 | err=UNZ_ERRNO; |
| 1422 | else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compression_method)) |
| 1423 | err=UNZ_BADZIPFILE; |
| 1424 | |
| 1425 | if ((err==UNZ_OK) && (s->cur_file_info.compression_method!=0) && |
| 1426 | /* #ifdef HAVE_BZIP2 */ |
| 1427 | (s->cur_file_info.compression_method!=Z_BZIP2ED) && |
| 1428 | /* #endif */ |
| 1429 | (s->cur_file_info.compression_method!=Z_DEFLATED)) |
| 1430 | err=UNZ_BADZIPFILE; |
| 1431 | |
| 1432 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */ |
| 1433 | err=UNZ_ERRNO; |
| 1434 | |
| 1435 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* crc */ |
| 1436 | err=UNZ_ERRNO; |
| 1437 | else if ((err==UNZ_OK) && (uData!=s->cur_file_info.crc) && ((uFlags & 8)==0)) |
| 1438 | err=UNZ_BADZIPFILE; |
| 1439 | |
| 1440 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */ |
| 1441 | err=UNZ_ERRNO; |
| 1442 | else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) && ((uFlags & 8)==0)) |
| 1443 | err=UNZ_BADZIPFILE; |
| 1444 | |
| 1445 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */ |
| 1446 | err=UNZ_ERRNO; |
| 1447 | else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) && ((uFlags & 8)==0)) |
| 1448 | err=UNZ_BADZIPFILE; |
| 1449 | |
| 1450 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_filename) != UNZ_OK) |
| 1451 | err=UNZ_ERRNO; |
| 1452 | else if ((err==UNZ_OK) && (size_filename!=s->cur_file_info.size_filename)) |
| 1453 | err=UNZ_BADZIPFILE; |
| 1454 | |
| 1455 | *piSizeVar += (uInt)size_filename; |
| 1456 | |
| 1457 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_extra_field) != UNZ_OK) |
| 1458 | err=UNZ_ERRNO; |
| 1459 | *poffset_local_extrafield= s->cur_file_info_internal.offset_curfile + |
| 1460 | SIZEZIPLOCALHEADER + size_filename; |
| 1461 | *psize_local_extrafield = (uInt)size_extra_field; |
| 1462 | |
| 1463 | *piSizeVar += (uInt)size_extra_field; |
| 1464 | |
| 1465 | return err; |
| 1466 | } |
| 1467 | |
| 1468 | /* |
| 1469 | Open for reading data the current file in the zipfile. |
| 1470 | If there is no error and the file is opened, the return value is UNZ_OK. |
| 1471 | */ |
| 1472 | extern int ZEXPORT unzOpenCurrentFile3 (unzFile file, int* method, |
| 1473 | int* level, int raw, const char* password) |
| 1474 | { |
| 1475 | int err=UNZ_OK; |
| 1476 | uInt iSizeVar; |
| 1477 | unz64_s* s; |
| 1478 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1479 | ZPOS64_T offset_local_extrafield; /* offset of the local extra field */ |
| 1480 | uInt size_local_extrafield; /* size of the local extra field */ |
| 1481 | # ifndef NOUNCRYPT |
| 1482 | char source[12]; |
| 1483 | # else |
| 1484 | if (password != NULL) |
| 1485 | return UNZ_PARAMERROR; |
| 1486 | # endif |
| 1487 | |
| 1488 | if (file==NULL) |
| 1489 | return UNZ_PARAMERROR; |
| 1490 | s=(unz64_s*)file; |
| 1491 | if (!s->current_file_ok) |
| 1492 | return UNZ_PARAMERROR; |
| 1493 | |
| 1494 | if (s->pfile_in_zip_read != NULL) |
| 1495 | unzCloseCurrentFile(file); |
| 1496 | |
| 1497 | if (unz64local_CheckCurrentFileCoherencyHeader(s,&iSizeVar, &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK) |
| 1498 | return UNZ_BADZIPFILE; |
| 1499 | |
| 1500 | pfile_in_zip_read_info = (file_in_zip64_read_info_s*)ALLOC(sizeof(file_in_zip64_read_info_s)); |
| 1501 | if (pfile_in_zip_read_info==NULL) |
| 1502 | return UNZ_INTERNALERROR; |
| 1503 | |
| 1504 | pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE); |
| 1505 | pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield; |
| 1506 | pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield; |
| 1507 | pfile_in_zip_read_info->pos_local_extrafield=0; |
| 1508 | pfile_in_zip_read_info->raw=raw; |
| 1509 | |
| 1510 | if (pfile_in_zip_read_info->read_buffer==NULL) |
| 1511 | { |
| 1512 | TRYFREE(pfile_in_zip_read_info); |
| 1513 | return UNZ_INTERNALERROR; |
| 1514 | } |
| 1515 | |
| 1516 | pfile_in_zip_read_info->stream_initialised=0; |
| 1517 | |
| 1518 | if (method!=NULL) |
| 1519 | *method = (int)s->cur_file_info.compression_method; |
| 1520 | |
| 1521 | if (level!=NULL) |
| 1522 | { |
| 1523 | *level = 6; |
| 1524 | switch (s->cur_file_info.flag & 0x06) |
| 1525 | { |
| 1526 | case 6 : *level = 1; break; |
| 1527 | case 4 : *level = 2; break; |
| 1528 | case 2 : *level = 9; break; |
| 1529 | } |
| 1530 | } |
| 1531 | |
| 1532 | if ((s->cur_file_info.compression_method!=0) && |
| 1533 | /* #ifdef HAVE_BZIP2 */ |
| 1534 | (s->cur_file_info.compression_method!=Z_BZIP2ED) && |
| 1535 | /* #endif */ |
| 1536 | (s->cur_file_info.compression_method!=Z_DEFLATED)) |
| 1537 | |
| 1538 | err=UNZ_BADZIPFILE; |
| 1539 | |
| 1540 | pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc; |
| 1541 | pfile_in_zip_read_info->crc32=0; |
| 1542 | pfile_in_zip_read_info->total_out_64=0; |
| 1543 | pfile_in_zip_read_info->compression_method = s->cur_file_info.compression_method; |
| 1544 | pfile_in_zip_read_info->filestream=s->filestream; |
| 1545 | pfile_in_zip_read_info->z_filefunc=s->z_filefunc; |
| 1546 | pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile; |
| 1547 | |
| 1548 | pfile_in_zip_read_info->stream.total_out = 0; |
| 1549 | |
| 1550 | if ((s->cur_file_info.compression_method==Z_BZIP2ED) && (!raw)) |
| 1551 | { |
| 1552 | #ifdef HAVE_BZIP2 |
| 1553 | pfile_in_zip_read_info->bstream.bzalloc = (void *(*) (void *, int, int))0; |
| 1554 | pfile_in_zip_read_info->bstream.bzfree = (free_func)0; |
| 1555 | pfile_in_zip_read_info->bstream.opaque = (voidpf)0; |
| 1556 | pfile_in_zip_read_info->bstream.state = (voidpf)0; |
| 1557 | |
| 1558 | pfile_in_zip_read_info->stream.zalloc = (alloc_func)0; |
| 1559 | pfile_in_zip_read_info->stream.zfree = (free_func)0; |
| 1560 | pfile_in_zip_read_info->stream.opaque = (voidpf)0; |
| 1561 | pfile_in_zip_read_info->stream.next_in = (voidpf)0; |
| 1562 | pfile_in_zip_read_info->stream.avail_in = 0; |
| 1563 | |
| 1564 | err=BZ2_bzDecompressInit(&pfile_in_zip_read_info->bstream, 0, 0); |
| 1565 | if (err == Z_OK) |
| 1566 | pfile_in_zip_read_info->stream_initialised=Z_BZIP2ED; |
| 1567 | else |
| 1568 | { |
| 1569 | TRYFREE(pfile_in_zip_read_info); |
| 1570 | return err; |
| 1571 | } |
| 1572 | #else |
| 1573 | pfile_in_zip_read_info->raw=1; |
| 1574 | #endif |
| 1575 | } |
| 1576 | else if ((s->cur_file_info.compression_method==Z_DEFLATED) && (!raw)) |
| 1577 | { |
| 1578 | pfile_in_zip_read_info->stream.zalloc = (alloc_func)0; |
| 1579 | pfile_in_zip_read_info->stream.zfree = (free_func)0; |
| 1580 | pfile_in_zip_read_info->stream.opaque = (voidpf)0; |
| 1581 | pfile_in_zip_read_info->stream.next_in = 0; |
| 1582 | pfile_in_zip_read_info->stream.avail_in = 0; |
| 1583 | |
| 1584 | err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS); |
| 1585 | if (err == Z_OK) |
| 1586 | pfile_in_zip_read_info->stream_initialised=Z_DEFLATED; |
| 1587 | else |
| 1588 | { |
| 1589 | TRYFREE(pfile_in_zip_read_info); |
| 1590 | return err; |
| 1591 | } |
| 1592 | /* windowBits is passed < 0 to tell that there is no zlib header. |
| 1593 | * Note that in this case inflate *requires* an extra "dummy" byte |
| 1594 | * after the compressed stream in order to complete decompression and |
| 1595 | * return Z_STREAM_END. |
| 1596 | * In unzip, i don't wait absolutely Z_STREAM_END because I known the |
| 1597 | * size of both compressed and uncompressed data |
| 1598 | */ |
| 1599 | } |
| 1600 | pfile_in_zip_read_info->rest_read_compressed = |
| 1601 | s->cur_file_info.compressed_size ; |
| 1602 | pfile_in_zip_read_info->rest_read_uncompressed = |
| 1603 | s->cur_file_info.uncompressed_size ; |
| 1604 | |
| 1605 | |
| 1606 | pfile_in_zip_read_info->pos_in_zipfile = |
| 1607 | s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + |
| 1608 | iSizeVar; |
| 1609 | |
| 1610 | pfile_in_zip_read_info->stream.avail_in = (uInt)0; |
| 1611 | |
| 1612 | s->pfile_in_zip_read = pfile_in_zip_read_info; |
| 1613 | s->encrypted = 0; |
| 1614 | |
| 1615 | # ifndef NOUNCRYPT |
| 1616 | if (password != NULL) |
| 1617 | { |
| 1618 | int i; |
| 1619 | s->pcrc_32_tab = get_crc_table(); |
| 1620 | init_keys(password,s->keys,s->pcrc_32_tab); |
| 1621 | if (ZSEEK64(s->z_filefunc, s->filestream, |
| 1622 | s->pfile_in_zip_read->pos_in_zipfile + |
| 1623 | s->pfile_in_zip_read->byte_before_the_zipfile, |
| 1624 | SEEK_SET)!=0) |
| 1625 | return UNZ_INTERNALERROR; |
| 1626 | if(ZREAD64(s->z_filefunc, s->filestream,source, 12)<12) |
| 1627 | return UNZ_INTERNALERROR; |
| 1628 | |
| 1629 | for (i = 0; i<12; i++) |
| 1630 | zdecode(s->keys,s->pcrc_32_tab,source[i]); |
| 1631 | |
| 1632 | s->pfile_in_zip_read->pos_in_zipfile+=12; |
| 1633 | s->encrypted=1; |
| 1634 | } |
| 1635 | # endif |
| 1636 | |
| 1637 | |
| 1638 | return UNZ_OK; |
| 1639 | } |
| 1640 | |
| 1641 | extern int ZEXPORT unzOpenCurrentFile (unzFile file) |
| 1642 | { |
| 1643 | return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL); |
| 1644 | } |
| 1645 | |
| 1646 | extern int ZEXPORT unzOpenCurrentFilePassword (unzFile file, const char* password) |
| 1647 | { |
| 1648 | return unzOpenCurrentFile3(file, NULL, NULL, 0, password); |
| 1649 | } |
| 1650 | |
| 1651 | extern int ZEXPORT unzOpenCurrentFile2 (unzFile file, int* method, int* level, int raw) |
| 1652 | { |
| 1653 | return unzOpenCurrentFile3(file, method, level, raw, NULL); |
| 1654 | } |
| 1655 | |
| 1656 | /** Addition for GDAL : START */ |
| 1657 | |
| 1658 | extern ZPOS64_T ZEXPORT unzGetCurrentFileZStreamPos64( unzFile file) |
| 1659 | { |
| 1660 | unz64_s* s; |
| 1661 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1662 | s=(unz64_s*)file; |
| 1663 | if (file==NULL) |
| 1664 | return 0; //UNZ_PARAMERROR; |
| 1665 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1666 | if (pfile_in_zip_read_info==NULL) |
| 1667 | return 0; //UNZ_PARAMERROR; |
| 1668 | return pfile_in_zip_read_info->pos_in_zipfile + |
| 1669 | pfile_in_zip_read_info->byte_before_the_zipfile; |
| 1670 | } |
| 1671 | |
| 1672 | /** Addition for GDAL : END */ |
| 1673 | |
| 1674 | /* |
| 1675 | Read bytes from the current file. |
| 1676 | buf contain buffer where data must be copied |
| 1677 | len the size of buf. |
| 1678 | |
| 1679 | return the number of byte copied if somes bytes are copied |
| 1680 | return 0 if the end of file was reached |
| 1681 | return <0 with error code if there is an error |
| 1682 | (UNZ_ERRNO for IO error, or zLib error for uncompress error) |
| 1683 | */ |
| 1684 | extern int ZEXPORT unzReadCurrentFile (unzFile file, voidp buf, unsigned len) |
| 1685 | { |
| 1686 | int err=UNZ_OK; |
| 1687 | uInt iRead = 0; |
| 1688 | unz64_s* s; |
| 1689 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1690 | if (file==NULL) |
| 1691 | return UNZ_PARAMERROR; |
| 1692 | s=(unz64_s*)file; |
| 1693 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1694 | |
| 1695 | if (pfile_in_zip_read_info==NULL) |
| 1696 | return UNZ_PARAMERROR; |
| 1697 | |
| 1698 | |
| 1699 | if (pfile_in_zip_read_info->read_buffer == NULL) |
| 1700 | return UNZ_END_OF_LIST_OF_FILE; |
| 1701 | if (len==0) |
| 1702 | return 0; |
| 1703 | |
| 1704 | pfile_in_zip_read_info->stream.next_out = (Bytef*)buf; |
| 1705 | |
| 1706 | pfile_in_zip_read_info->stream.avail_out = (uInt)len; |
| 1707 | |
| 1708 | if ((len>pfile_in_zip_read_info->rest_read_uncompressed) && |
| 1709 | (!(pfile_in_zip_read_info->raw))) |
| 1710 | pfile_in_zip_read_info->stream.avail_out = |
| 1711 | (uInt)pfile_in_zip_read_info->rest_read_uncompressed; |
| 1712 | |
| 1713 | if ((len>pfile_in_zip_read_info->rest_read_compressed+ |
| 1714 | pfile_in_zip_read_info->stream.avail_in) && |
| 1715 | (pfile_in_zip_read_info->raw)) |
| 1716 | pfile_in_zip_read_info->stream.avail_out = |
| 1717 | (uInt)pfile_in_zip_read_info->rest_read_compressed+ |
| 1718 | pfile_in_zip_read_info->stream.avail_in; |
| 1719 | |
| 1720 | while (pfile_in_zip_read_info->stream.avail_out>0) |
| 1721 | { |
| 1722 | if ((pfile_in_zip_read_info->stream.avail_in==0) && |
| 1723 | (pfile_in_zip_read_info->rest_read_compressed>0)) |
| 1724 | { |
| 1725 | uInt uReadThis = UNZ_BUFSIZE; |
| 1726 | if (pfile_in_zip_read_info->rest_read_compressed<uReadThis) |
| 1727 | uReadThis = (uInt)pfile_in_zip_read_info->rest_read_compressed; |
| 1728 | if (uReadThis == 0) |
| 1729 | return UNZ_EOF; |
| 1730 | if (ZSEEK64(pfile_in_zip_read_info->z_filefunc, |
| 1731 | pfile_in_zip_read_info->filestream, |
| 1732 | pfile_in_zip_read_info->pos_in_zipfile + |
| 1733 | pfile_in_zip_read_info->byte_before_the_zipfile, |
| 1734 | ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 1735 | return UNZ_ERRNO; |
| 1736 | if (ZREAD64(pfile_in_zip_read_info->z_filefunc, |
| 1737 | pfile_in_zip_read_info->filestream, |
| 1738 | pfile_in_zip_read_info->read_buffer, |
| 1739 | uReadThis)!=uReadThis) |
| 1740 | return UNZ_ERRNO; |
| 1741 | |
| 1742 | |
| 1743 | # ifndef NOUNCRYPT |
| 1744 | if(s->encrypted) |
| 1745 | { |
| 1746 | uInt i; |
| 1747 | for(i=0;i<uReadThis;i++) |
| 1748 | pfile_in_zip_read_info->read_buffer[i] = |
| 1749 | zdecode(s->keys,s->pcrc_32_tab, |
| 1750 | pfile_in_zip_read_info->read_buffer[i]); |
| 1751 | } |
| 1752 | # endif |
| 1753 | |
| 1754 | |
| 1755 | pfile_in_zip_read_info->pos_in_zipfile += uReadThis; |
| 1756 | |
| 1757 | pfile_in_zip_read_info->rest_read_compressed-=uReadThis; |
| 1758 | |
| 1759 | pfile_in_zip_read_info->stream.next_in = |
| 1760 | (Bytef*)pfile_in_zip_read_info->read_buffer; |
| 1761 | pfile_in_zip_read_info->stream.avail_in = (uInt)uReadThis; |
| 1762 | } |
| 1763 | |
| 1764 | if ((pfile_in_zip_read_info->compression_method==0) || (pfile_in_zip_read_info->raw)) |
| 1765 | { |
| 1766 | uInt uDoCopy,i ; |
| 1767 | |
| 1768 | if ((pfile_in_zip_read_info->stream.avail_in == 0) && |
| 1769 | (pfile_in_zip_read_info->rest_read_compressed == 0)) |
| 1770 | return (iRead==0) ? UNZ_EOF : iRead; |
| 1771 | |
| 1772 | if (pfile_in_zip_read_info->stream.avail_out < |
| 1773 | pfile_in_zip_read_info->stream.avail_in) |
| 1774 | uDoCopy = pfile_in_zip_read_info->stream.avail_out ; |
| 1775 | else |
| 1776 | uDoCopy = pfile_in_zip_read_info->stream.avail_in ; |
| 1777 | |
| 1778 | for (i=0;i<uDoCopy;i++) |
| 1779 | *(pfile_in_zip_read_info->stream.next_out+i) = |
| 1780 | *(pfile_in_zip_read_info->stream.next_in+i); |
| 1781 | |
| 1782 | pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uDoCopy; |
| 1783 | |
| 1784 | pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32, |
| 1785 | pfile_in_zip_read_info->stream.next_out, |
| 1786 | uDoCopy); |
| 1787 | pfile_in_zip_read_info->rest_read_uncompressed-=uDoCopy; |
| 1788 | pfile_in_zip_read_info->stream.avail_in -= uDoCopy; |
| 1789 | pfile_in_zip_read_info->stream.avail_out -= uDoCopy; |
| 1790 | pfile_in_zip_read_info->stream.next_out += uDoCopy; |
| 1791 | pfile_in_zip_read_info->stream.next_in += uDoCopy; |
| 1792 | pfile_in_zip_read_info->stream.total_out += uDoCopy; |
| 1793 | iRead += uDoCopy; |
| 1794 | } |
| 1795 | else if (pfile_in_zip_read_info->compression_method==Z_BZIP2ED) |
| 1796 | { |
| 1797 | #ifdef HAVE_BZIP2 |
| 1798 | uLong uTotalOutBefore,uTotalOutAfter; |
| 1799 | const Bytef *bufBefore; |
| 1800 | uLong uOutThis; |
| 1801 | |
| 1802 | pfile_in_zip_read_info->bstream.next_in = (char*)pfile_in_zip_read_info->stream.next_in; |
| 1803 | pfile_in_zip_read_info->bstream.avail_in = pfile_in_zip_read_info->stream.avail_in; |
| 1804 | pfile_in_zip_read_info->bstream.total_in_lo32 = pfile_in_zip_read_info->stream.total_in; |
| 1805 | pfile_in_zip_read_info->bstream.total_in_hi32 = 0; |
| 1806 | pfile_in_zip_read_info->bstream.next_out = (char*)pfile_in_zip_read_info->stream.next_out; |
| 1807 | pfile_in_zip_read_info->bstream.avail_out = pfile_in_zip_read_info->stream.avail_out; |
| 1808 | pfile_in_zip_read_info->bstream.total_out_lo32 = pfile_in_zip_read_info->stream.total_out; |
| 1809 | pfile_in_zip_read_info->bstream.total_out_hi32 = 0; |
| 1810 | |
| 1811 | uTotalOutBefore = pfile_in_zip_read_info->bstream.total_out_lo32; |
| 1812 | bufBefore = (const Bytef *)pfile_in_zip_read_info->bstream.next_out; |
| 1813 | |
| 1814 | err=BZ2_bzDecompress(&pfile_in_zip_read_info->bstream); |
| 1815 | |
| 1816 | uTotalOutAfter = pfile_in_zip_read_info->bstream.total_out_lo32; |
| 1817 | uOutThis = uTotalOutAfter-uTotalOutBefore; |
| 1818 | |
| 1819 | pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis; |
| 1820 | |
| 1821 | pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,bufBefore, (uInt)(uOutThis)); |
| 1822 | pfile_in_zip_read_info->rest_read_uncompressed -= uOutThis; |
| 1823 | iRead += (uInt)(uTotalOutAfter - uTotalOutBefore); |
| 1824 | |
| 1825 | pfile_in_zip_read_info->stream.next_in = (Bytef*)pfile_in_zip_read_info->bstream.next_in; |
| 1826 | pfile_in_zip_read_info->stream.avail_in = pfile_in_zip_read_info->bstream.avail_in; |
| 1827 | pfile_in_zip_read_info->stream.total_in = pfile_in_zip_read_info->bstream.total_in_lo32; |
| 1828 | pfile_in_zip_read_info->stream.next_out = (Bytef*)pfile_in_zip_read_info->bstream.next_out; |
| 1829 | pfile_in_zip_read_info->stream.avail_out = pfile_in_zip_read_info->bstream.avail_out; |
| 1830 | pfile_in_zip_read_info->stream.total_out = pfile_in_zip_read_info->bstream.total_out_lo32; |
| 1831 | |
| 1832 | if (err==BZ_STREAM_END) |
| 1833 | return (iRead==0) ? UNZ_EOF : iRead; |
| 1834 | if (err!=BZ_OK) |
| 1835 | break; |
| 1836 | #endif |
| 1837 | } // end Z_BZIP2ED |
| 1838 | else |
| 1839 | { |
| 1840 | ZPOS64_T uTotalOutBefore,uTotalOutAfter; |
| 1841 | const Bytef *bufBefore; |
| 1842 | ZPOS64_T uOutThis; |
| 1843 | int flush=Z_SYNC_FLUSH; |
| 1844 | |
| 1845 | uTotalOutBefore = pfile_in_zip_read_info->stream.total_out; |
| 1846 | bufBefore = pfile_in_zip_read_info->stream.next_out; |
| 1847 | |
| 1848 | /* |
| 1849 | if ((pfile_in_zip_read_info->rest_read_uncompressed == |
| 1850 | pfile_in_zip_read_info->stream.avail_out) && |
| 1851 | (pfile_in_zip_read_info->rest_read_compressed == 0)) |
| 1852 | flush = Z_FINISH; |
| 1853 | */ |
| 1854 | err=inflate(&pfile_in_zip_read_info->stream,flush); |
| 1855 | |
| 1856 | if ((err>=0) && (pfile_in_zip_read_info->stream.msg!=NULL)) |
| 1857 | err = Z_DATA_ERROR; |
| 1858 | |
| 1859 | uTotalOutAfter = pfile_in_zip_read_info->stream.total_out; |
| 1860 | uOutThis = uTotalOutAfter-uTotalOutBefore; |
| 1861 | |
| 1862 | pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis; |
| 1863 | |
| 1864 | pfile_in_zip_read_info->crc32 = |
| 1865 | crc32(pfile_in_zip_read_info->crc32,bufBefore, |
| 1866 | (uInt)(uOutThis)); |
| 1867 | |
| 1868 | pfile_in_zip_read_info->rest_read_uncompressed -= |
| 1869 | uOutThis; |
| 1870 | |
| 1871 | iRead += (uInt)(uTotalOutAfter - uTotalOutBefore); |
| 1872 | |
| 1873 | if (err==Z_STREAM_END) |
| 1874 | return (iRead==0) ? UNZ_EOF : iRead; |
| 1875 | if (err!=Z_OK) |
| 1876 | break; |
| 1877 | } |
| 1878 | } |
| 1879 | |
| 1880 | if (err==Z_OK) |
| 1881 | return iRead; |
| 1882 | return err; |
| 1883 | } |
| 1884 | |
| 1885 | |
| 1886 | /* |
| 1887 | Give the current position in uncompressed data |
| 1888 | */ |
| 1889 | extern z_off_t ZEXPORT unztell (unzFile file) |
| 1890 | { |
| 1891 | unz64_s* s; |
| 1892 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1893 | if (file==NULL) |
| 1894 | return UNZ_PARAMERROR; |
| 1895 | s=(unz64_s*)file; |
| 1896 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1897 | |
| 1898 | if (pfile_in_zip_read_info==NULL) |
| 1899 | return UNZ_PARAMERROR; |
| 1900 | |
| 1901 | return (z_off_t)pfile_in_zip_read_info->stream.total_out; |
| 1902 | } |
| 1903 | |
| 1904 | extern ZPOS64_T ZEXPORT unztell64 (unzFile file) |
| 1905 | { |
| 1906 | |
| 1907 | unz64_s* s; |
| 1908 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1909 | if (file==NULL) |
| 1910 | return (ZPOS64_T)-1; |
| 1911 | s=(unz64_s*)file; |
| 1912 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1913 | |
| 1914 | if (pfile_in_zip_read_info==NULL) |
| 1915 | return (ZPOS64_T)-1; |
| 1916 | |
| 1917 | return pfile_in_zip_read_info->total_out_64; |
| 1918 | } |
| 1919 | |
| 1920 | |
| 1921 | /* |
| 1922 | return 1 if the end of file was reached, 0 elsewhere |
| 1923 | */ |
| 1924 | extern int ZEXPORT unzeof (unzFile file) |
| 1925 | { |
| 1926 | unz64_s* s; |
| 1927 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1928 | if (file==NULL) |
| 1929 | return UNZ_PARAMERROR; |
| 1930 | s=(unz64_s*)file; |
| 1931 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1932 | |
| 1933 | if (pfile_in_zip_read_info==NULL) |
| 1934 | return UNZ_PARAMERROR; |
| 1935 | |
| 1936 | if (pfile_in_zip_read_info->rest_read_uncompressed == 0) |
| 1937 | return 1; |
| 1938 | else |
| 1939 | return 0; |
| 1940 | } |
| 1941 | |
| 1942 | |
| 1943 | |
| 1944 | /* |
| 1945 | Read extra field from the current file (opened by unzOpenCurrentFile) |
| 1946 | This is the local-header version of the extra field (sometimes, there is |
| 1947 | more info in the local-header version than in the central-header) |
| 1948 | |
| 1949 | if buf==NULL, it return the size of the local extra field that can be read |
| 1950 | |
| 1951 | if buf!=NULL, len is the size of the buffer, the extra header is copied in |
| 1952 | buf. |
| 1953 | the return value is the number of bytes copied in buf, or (if <0) |
| 1954 | the error code |
| 1955 | */ |
| 1956 | extern int ZEXPORT unzGetLocalExtrafield (unzFile file, voidp buf, unsigned len) |
| 1957 | { |
| 1958 | unz64_s* s; |
| 1959 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1960 | uInt read_now; |
| 1961 | ZPOS64_T size_to_read; |
| 1962 | |
| 1963 | if (file==NULL) |
| 1964 | return UNZ_PARAMERROR; |
| 1965 | s=(unz64_s*)file; |
| 1966 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1967 | |
| 1968 | if (pfile_in_zip_read_info==NULL) |
| 1969 | return UNZ_PARAMERROR; |
| 1970 | |
| 1971 | size_to_read = (pfile_in_zip_read_info->size_local_extrafield - |
| 1972 | pfile_in_zip_read_info->pos_local_extrafield); |
| 1973 | |
| 1974 | if (buf==NULL) |
| 1975 | return (int)size_to_read; |
| 1976 | |
| 1977 | if (len>size_to_read) |
| 1978 | read_now = (uInt)size_to_read; |
| 1979 | else |
| 1980 | read_now = (uInt)len ; |
| 1981 | |
| 1982 | if (read_now==0) |
| 1983 | return 0; |
| 1984 | |
| 1985 | if (ZSEEK64(pfile_in_zip_read_info->z_filefunc, |
| 1986 | pfile_in_zip_read_info->filestream, |
| 1987 | pfile_in_zip_read_info->offset_local_extrafield + |
| 1988 | pfile_in_zip_read_info->pos_local_extrafield, |
| 1989 | ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 1990 | return UNZ_ERRNO; |
| 1991 | |
| 1992 | if (ZREAD64(pfile_in_zip_read_info->z_filefunc, |
| 1993 | pfile_in_zip_read_info->filestream, |
| 1994 | buf,read_now)!=read_now) |
| 1995 | return UNZ_ERRNO; |
| 1996 | |
| 1997 | return (int)read_now; |
| 1998 | } |
| 1999 | |
| 2000 | /* |
| 2001 | Close the file in zip opened with unzipOpenCurrentFile |
| 2002 | Return UNZ_CRCERROR if all the file was read but the CRC is not good |
| 2003 | */ |
| 2004 | extern int ZEXPORT unzCloseCurrentFile (unzFile file) |
| 2005 | { |
| 2006 | int err=UNZ_OK; |
| 2007 | |
| 2008 | unz64_s* s; |
| 2009 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 2010 | if (file==NULL) |
| 2011 | return UNZ_PARAMERROR; |
| 2012 | s=(unz64_s*)file; |
| 2013 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 2014 | |
| 2015 | if (pfile_in_zip_read_info==NULL) |
| 2016 | return UNZ_PARAMERROR; |
| 2017 | |
| 2018 | |
| 2019 | if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) && |
| 2020 | (!pfile_in_zip_read_info->raw)) |
| 2021 | { |
| 2022 | if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait) |
| 2023 | err=UNZ_CRCERROR; |
| 2024 | } |
| 2025 | |
| 2026 | |
| 2027 | TRYFREE(pfile_in_zip_read_info->read_buffer); |
| 2028 | pfile_in_zip_read_info->read_buffer = NULL; |
| 2029 | if (pfile_in_zip_read_info->stream_initialised == Z_DEFLATED) |
| 2030 | inflateEnd(&pfile_in_zip_read_info->stream); |
| 2031 | #ifdef HAVE_BZIP2 |
| 2032 | else if (pfile_in_zip_read_info->stream_initialised == Z_BZIP2ED) |
| 2033 | BZ2_bzDecompressEnd(&pfile_in_zip_read_info->bstream); |
| 2034 | #endif |
| 2035 | |
| 2036 | |
| 2037 | pfile_in_zip_read_info->stream_initialised = 0; |
| 2038 | TRYFREE(pfile_in_zip_read_info); |
| 2039 | |
| 2040 | s->pfile_in_zip_read=NULL; |
| 2041 | |
| 2042 | return err; |
| 2043 | } |
| 2044 | |
| 2045 | |
| 2046 | /* |
| 2047 | Get the global comment string of the ZipFile, in the szComment buffer. |
| 2048 | uSizeBuf is the size of the szComment buffer. |
| 2049 | return the number of byte copied or an error code <0 |
| 2050 | */ |
| 2051 | extern int ZEXPORT unzGetGlobalComment (unzFile file, char * szComment, uLong uSizeBuf) |
| 2052 | { |
| 2053 | unz64_s* s; |
| 2054 | uLong uReadThis ; |
| 2055 | if (file==NULL) |
| 2056 | return (int)UNZ_PARAMERROR; |
| 2057 | s=(unz64_s*)file; |
| 2058 | |
| 2059 | uReadThis = uSizeBuf; |
| 2060 | if (uReadThis>s->gi.size_comment) |
| 2061 | uReadThis = s->gi.size_comment; |
| 2062 | |
| 2063 | if (ZSEEK64(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 2064 | return UNZ_ERRNO; |
| 2065 | |
| 2066 | if (uReadThis>0) |
| 2067 | { |
| 2068 | *szComment='\0'; |
| 2069 | if (ZREAD64(s->z_filefunc,s->filestream,szComment,uReadThis)!=uReadThis) |
| 2070 | return UNZ_ERRNO; |
| 2071 | } |
| 2072 | |
| 2073 | if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment)) |
| 2074 | *(szComment+s->gi.size_comment)='\0'; |
| 2075 | return (int)uReadThis; |
| 2076 | } |
| 2077 | |
| 2078 | /* Additions by RX '2004 */ |
| 2079 | extern ZPOS64_T ZEXPORT unzGetOffset64(unzFile file) |
| 2080 | { |
| 2081 | unz64_s* s; |
| 2082 | |
| 2083 | if (file==NULL) |
| 2084 | return 0; //UNZ_PARAMERROR; |
| 2085 | s=(unz64_s*)file; |
| 2086 | if (!s->current_file_ok) |
| 2087 | return 0; |
| 2088 | if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff) |
| 2089 | if (s->num_file==s->gi.number_entry) |
| 2090 | return 0; |
| 2091 | return s->pos_in_central_dir; |
| 2092 | } |
| 2093 | |
| 2094 | extern uLong ZEXPORT unzGetOffset (unzFile file) |
| 2095 | { |
| 2096 | ZPOS64_T offset64; |
| 2097 | |
| 2098 | if (file==NULL) |
| 2099 | return 0; //UNZ_PARAMERROR; |
| 2100 | offset64 = unzGetOffset64(file); |
| 2101 | return (uLong)offset64; |
| 2102 | } |
| 2103 | |
| 2104 | extern int ZEXPORT unzSetOffset64(unzFile file, ZPOS64_T pos) |
| 2105 | { |
| 2106 | unz64_s* s; |
| 2107 | int err; |
| 2108 | |
| 2109 | if (file==NULL) |
| 2110 | return UNZ_PARAMERROR; |
| 2111 | s=(unz64_s*)file; |
| 2112 | |
| 2113 | s->pos_in_central_dir = pos; |
| 2114 | s->num_file = s->gi.number_entry; /* hack */ |
| 2115 | err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, |
| 2116 | &s->cur_file_info_internal, |
| 2117 | NULL,0,NULL,0,NULL,0); |
| 2118 | s->current_file_ok = (err == UNZ_OK); |
| 2119 | return err; |
| 2120 | } |
| 2121 | |
| 2122 | extern int ZEXPORT unzSetOffset (unzFile file, uLong pos) |
| 2123 | { |
| 2124 | return unzSetOffset64(file,pos); |
| 2125 | } |