| 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 patches received from Gilles Vollant |
| 57 | Oct-2009 - Mathias Svensson - Applied support to unzip files with compression method 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 | #endif |
| 81 | #ifdef NO_ERRNO_H |
| 82 | extern int errno; |
| 83 | #else |
| 84 | # include <errno.h> |
| 85 | #endif |
| 86 | |
| 87 | |
| 88 | #ifndef local |
| 89 | # define local static |
| 90 | #endif |
| 91 | /* compile with -Dlocal if your debugger can't find static symbols */ |
| 92 | |
| 93 | |
| 94 | #ifndef CASESENSITIVITYDEFAULT_NO |
| 95 | # if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES) |
| 96 | # define CASESENSITIVITYDEFAULT_NO |
| 97 | # endif |
| 98 | #endif |
| 99 | |
| 100 | |
| 101 | #ifndef UNZ_BUFSIZE |
| 102 | #define UNZ_BUFSIZE (16384) |
| 103 | #endif |
| 104 | |
| 105 | #ifndef UNZ_MAXFILENAMEINZIP |
| 106 | #define UNZ_MAXFILENAMEINZIP (256) |
| 107 | #endif |
| 108 | |
| 109 | #ifndef ALLOC |
| 110 | # define ALLOC(size) (malloc(size)) |
| 111 | #endif |
| 112 | |
| 113 | #define SIZECENTRALDIRITEM (0x2e) |
| 114 | #define SIZEZIPLOCALHEADER (0x1e) |
| 115 | |
| 116 | |
| 117 | const char unz_copyright[] = |
| 118 | " unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll"; |
| 119 | |
| 120 | /* unz_file_info64_internal contain internal info about a file in zipfile*/ |
| 121 | typedef struct unz_file_info64_internal_s |
| 122 | { |
| 123 | ZPOS64_T offset_curfile;/* relative offset of local header 8 bytes */ |
| 124 | } unz_file_info64_internal; |
| 125 | |
| 126 | |
| 127 | /* file_in_zip_read_info_s contain internal information about a file in zipfile, |
| 128 | when reading and decompress it */ |
| 129 | typedef struct |
| 130 | { |
| 131 | char *read_buffer; /* internal buffer for compressed data */ |
| 132 | z_stream stream; /* zLib stream structure for inflate */ |
| 133 | |
| 134 | #ifdef HAVE_BZIP2 |
| 135 | bz_stream bstream; /* bzLib stream structure for bziped */ |
| 136 | #endif |
| 137 | |
| 138 | ZPOS64_T pos_in_zipfile; /* position in byte on the zipfile, for fseek*/ |
| 139 | uLong stream_initialised; /* flag set if stream structure is initialised*/ |
| 140 | |
| 141 | ZPOS64_T offset_local_extrafield;/* offset of the local extra field */ |
| 142 | uInt size_local_extrafield;/* size of the local extra field */ |
| 143 | ZPOS64_T pos_local_extrafield; /* position in the local extra field in read*/ |
| 144 | ZPOS64_T total_out_64; |
| 145 | |
| 146 | uLong crc32; /* crc32 of all data uncompressed */ |
| 147 | uLong crc32_wait; /* crc32 we must obtain after decompress all */ |
| 148 | ZPOS64_T rest_read_compressed; /* number of byte to be decompressed */ |
| 149 | ZPOS64_T rest_read_uncompressed;/*number of byte to be obtained after decomp*/ |
| 150 | zlib_filefunc64_32_def z_filefunc; |
| 151 | voidpf filestream; /* io structure of the zipfile */ |
| 152 | uLong compression_method; /* compression method (0==store) */ |
| 153 | ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ |
| 154 | int raw; |
| 155 | } file_in_zip64_read_info_s; |
| 156 | |
| 157 | |
| 158 | /* unz64_s contain internal information about the zipfile |
| 159 | */ |
| 160 | typedef struct |
| 161 | { |
| 162 | zlib_filefunc64_32_def z_filefunc; |
| 163 | int is64bitOpenFunction; |
| 164 | voidpf filestream; /* io structure of the zipfile */ |
| 165 | unz_global_info64 gi; /* public global information */ |
| 166 | ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ |
| 167 | ZPOS64_T num_file; /* number of the current file in the zipfile*/ |
| 168 | ZPOS64_T pos_in_central_dir; /* pos of the current file in the central dir*/ |
| 169 | ZPOS64_T current_file_ok; /* flag about the usability of the current file*/ |
| 170 | ZPOS64_T central_pos; /* position of the beginning of the central dir*/ |
| 171 | |
| 172 | ZPOS64_T size_central_dir; /* size of the central directory */ |
| 173 | ZPOS64_T offset_central_dir; /* offset of start of central directory with |
| 174 | respect to the starting disk number */ |
| 175 | |
| 176 | unz_file_info64 cur_file_info; /* public info about the current file in zip*/ |
| 177 | unz_file_info64_internal cur_file_info_internal; /* private info about it*/ |
| 178 | file_in_zip64_read_info_s* pfile_in_zip_read; /* structure about the current |
| 179 | file if we are decompressing it */ |
| 180 | int encrypted; |
| 181 | |
| 182 | int isZip64; |
| 183 | |
| 184 | # ifndef NOUNCRYPT |
| 185 | unsigned long keys[3]; /* keys defining the pseudo-random sequence */ |
| 186 | const z_crc_t* pcrc_32_tab; |
| 187 | # endif |
| 188 | } unz64_s; |
| 189 | |
| 190 | |
| 191 | #ifndef NOUNCRYPT |
| 192 | #include "crypt.h" |
| 193 | #endif |
| 194 | |
| 195 | |
| 196 | /* =========================================================================== |
| 197 | Reads a long in LSB order from the given gz_stream. Sets |
| 198 | */ |
| 199 | |
| 200 | local int unz64local_getShort(const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 201 | voidpf filestream, |
| 202 | uLong *pX) { |
| 203 | unsigned char c[2]; |
| 204 | int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,c,2); |
| 205 | if (err==2) |
| 206 | { |
| 207 | *pX = c[0] | ((uLong)c[1] << 8); |
| 208 | return UNZ_OK; |
| 209 | } |
| 210 | else |
| 211 | { |
| 212 | *pX = 0; |
| 213 | if (ZERROR64(*pzlib_filefunc_def,filestream)) |
| 214 | return UNZ_ERRNO; |
| 215 | else |
| 216 | return UNZ_EOF; |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | local int unz64local_getLong(const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 221 | voidpf filestream, |
| 222 | uLong *pX) { |
| 223 | unsigned char c[4]; |
| 224 | int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,c,4); |
| 225 | if (err==4) |
| 226 | { |
| 227 | *pX = c[0] | ((uLong)c[1] << 8) | ((uLong)c[2] << 16) | ((uLong)c[3] << 24); |
| 228 | return UNZ_OK; |
| 229 | } |
| 230 | else |
| 231 | { |
| 232 | *pX = 0; |
| 233 | if (ZERROR64(*pzlib_filefunc_def,filestream)) |
| 234 | return UNZ_ERRNO; |
| 235 | else |
| 236 | return UNZ_EOF; |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | |
| 241 | local int unz64local_getLong64(const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 242 | voidpf filestream, |
| 243 | ZPOS64_T *pX) { |
| 244 | unsigned char c[8]; |
| 245 | int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,c,8); |
| 246 | if (err==8) |
| 247 | { |
| 248 | *pX = c[0] | ((ZPOS64_T)c[1] << 8) | ((ZPOS64_T)c[2] << 16) | ((ZPOS64_T)c[3] << 24) |
| 249 | | ((ZPOS64_T)c[4] << 32) | ((ZPOS64_T)c[5] << 40) | ((ZPOS64_T)c[6] << 48) | ((ZPOS64_T)c[7] << 56); |
| 250 | return UNZ_OK; |
| 251 | } |
| 252 | else |
| 253 | { |
| 254 | *pX = 0; |
| 255 | if (ZERROR64(*pzlib_filefunc_def,filestream)) |
| 256 | return UNZ_ERRNO; |
| 257 | else |
| 258 | return UNZ_EOF; |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | /* My own strcmpi / strcasecmp */ |
| 263 | local int strcmpcasenosensitive_internal(const char* fileName1, const char* fileName2) { |
| 264 | for (;;) |
| 265 | { |
| 266 | char c1=*(fileName1++); |
| 267 | char c2=*(fileName2++); |
| 268 | if ((c1>='a') && (c1<='z')) |
| 269 | c1 -= 0x20; |
| 270 | if ((c2>='a') && (c2<='z')) |
| 271 | c2 -= 0x20; |
| 272 | if (c1=='\0') |
| 273 | return ((c2=='\0') ? 0 : -1); |
| 274 | if (c2=='\0') |
| 275 | return 1; |
| 276 | if (c1<c2) |
| 277 | return -1; |
| 278 | if (c1>c2) |
| 279 | return 1; |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | |
| 284 | #ifdef CASESENSITIVITYDEFAULT_NO |
| 285 | #define CASESENSITIVITYDEFAULTVALUE 2 |
| 286 | #else |
| 287 | #define CASESENSITIVITYDEFAULTVALUE 1 |
| 288 | #endif |
| 289 | |
| 290 | #ifndef STRCMPCASENOSENTIVEFUNCTION |
| 291 | #define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal |
| 292 | #endif |
| 293 | |
| 294 | /* |
| 295 | Compare two filenames (fileName1,fileName2). |
| 296 | If iCaseSensitivity = 1, comparison is case sensitive (like strcmp) |
| 297 | If iCaseSensitivity = 2, comparison is not case sensitive (like strcmpi |
| 298 | or strcasecmp) |
| 299 | If iCaseSensitivity = 0, case sensitivity is default of your operating system |
| 300 | (like 1 on Unix, 2 on Windows) |
| 301 | |
| 302 | */ |
| 303 | extern int ZEXPORT unzStringFileNameCompare (const char* fileName1, |
| 304 | const char* fileName2, |
| 305 | int iCaseSensitivity) { |
| 306 | if (iCaseSensitivity==0) |
| 307 | iCaseSensitivity=CASESENSITIVITYDEFAULTVALUE; |
| 308 | |
| 309 | if (iCaseSensitivity==1) |
| 310 | return strcmp(fileName1,fileName2); |
| 311 | |
| 312 | return STRCMPCASENOSENTIVEFUNCTION(fileName1,fileName2); |
| 313 | } |
| 314 | |
| 315 | #ifndef BUFREADCOMMENT |
| 316 | #define BUFREADCOMMENT (0x400) |
| 317 | #endif |
| 318 | |
| 319 | #ifndef CENTRALDIRINVALID |
| 320 | #define CENTRALDIRINVALID ((ZPOS64_T)(-1)) |
| 321 | #endif |
| 322 | |
| 323 | /* |
| 324 | Locate the Central directory of a zipfile (at the end, just before |
| 325 | the global comment) |
| 326 | */ |
| 327 | local ZPOS64_T unz64local_SearchCentralDir(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) { |
| 328 | unsigned char* buf; |
| 329 | ZPOS64_T uSizeFile; |
| 330 | ZPOS64_T uBackRead; |
| 331 | ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ |
| 332 | ZPOS64_T uPosFound=CENTRALDIRINVALID; |
| 333 | |
| 334 | if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) |
| 335 | return CENTRALDIRINVALID; |
| 336 | |
| 337 | |
| 338 | uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); |
| 339 | |
| 340 | if (uMaxBack>uSizeFile) |
| 341 | uMaxBack = uSizeFile; |
| 342 | |
| 343 | buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); |
| 344 | if (buf==NULL) |
| 345 | return CENTRALDIRINVALID; |
| 346 | |
| 347 | uBackRead = 4; |
| 348 | while (uBackRead<uMaxBack) |
| 349 | { |
| 350 | uLong uReadSize; |
| 351 | ZPOS64_T uReadPos ; |
| 352 | int i; |
| 353 | if (uBackRead+BUFREADCOMMENT>uMaxBack) |
| 354 | uBackRead = uMaxBack; |
| 355 | else |
| 356 | uBackRead+=BUFREADCOMMENT; |
| 357 | uReadPos = uSizeFile-uBackRead ; |
| 358 | |
| 359 | uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? |
| 360 | (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); |
| 361 | if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 362 | break; |
| 363 | |
| 364 | if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) |
| 365 | break; |
| 366 | |
| 367 | for (i=(int)uReadSize-3; (i--)>0;) |
| 368 | if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && |
| 369 | ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06)) |
| 370 | { |
| 371 | uPosFound = uReadPos+(unsigned)i; |
| 372 | break; |
| 373 | } |
| 374 | |
| 375 | if (uPosFound!=CENTRALDIRINVALID) |
| 376 | break; |
| 377 | } |
| 378 | free(buf); |
| 379 | return uPosFound; |
| 380 | } |
| 381 | |
| 382 | |
| 383 | /* |
| 384 | Locate the Central directory 64 of a zipfile (at the end, just before |
| 385 | the global comment) |
| 386 | */ |
| 387 | local ZPOS64_T unz64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def, |
| 388 | voidpf filestream) { |
| 389 | unsigned char* buf; |
| 390 | ZPOS64_T uSizeFile; |
| 391 | ZPOS64_T uBackRead; |
| 392 | ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ |
| 393 | ZPOS64_T uPosFound=CENTRALDIRINVALID; |
| 394 | uLong uL; |
| 395 | ZPOS64_T relativeOffset; |
| 396 | |
| 397 | if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) |
| 398 | return CENTRALDIRINVALID; |
| 399 | |
| 400 | |
| 401 | uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); |
| 402 | |
| 403 | if (uMaxBack>uSizeFile) |
| 404 | uMaxBack = uSizeFile; |
| 405 | |
| 406 | buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); |
| 407 | if (buf==NULL) |
| 408 | return CENTRALDIRINVALID; |
| 409 | |
| 410 | uBackRead = 4; |
| 411 | while (uBackRead<uMaxBack) |
| 412 | { |
| 413 | uLong uReadSize; |
| 414 | ZPOS64_T uReadPos; |
| 415 | int i; |
| 416 | if (uBackRead+BUFREADCOMMENT>uMaxBack) |
| 417 | uBackRead = uMaxBack; |
| 418 | else |
| 419 | uBackRead+=BUFREADCOMMENT; |
| 420 | uReadPos = uSizeFile-uBackRead ; |
| 421 | |
| 422 | uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? |
| 423 | (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); |
| 424 | if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 425 | break; |
| 426 | |
| 427 | if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) |
| 428 | break; |
| 429 | |
| 430 | for (i=(int)uReadSize-3; (i--)>0;) |
| 431 | if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && |
| 432 | ((*(buf+i+2))==0x06) && ((*(buf+i+3))==0x07)) |
| 433 | { |
| 434 | uPosFound = uReadPos+(unsigned)i; |
| 435 | break; |
| 436 | } |
| 437 | |
| 438 | if (uPosFound!=CENTRALDIRINVALID) |
| 439 | break; |
| 440 | } |
| 441 | free(buf); |
| 442 | if (uPosFound == CENTRALDIRINVALID) |
| 443 | return CENTRALDIRINVALID; |
| 444 | |
| 445 | /* Zip64 end of central directory locator */ |
| 446 | if (ZSEEK64(*pzlib_filefunc_def,filestream, uPosFound,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 447 | return CENTRALDIRINVALID; |
| 448 | |
| 449 | /* the signature, already checked */ |
| 450 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) |
| 451 | return CENTRALDIRINVALID; |
| 452 | |
| 453 | /* number of the disk with the start of the zip64 end of central directory */ |
| 454 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) |
| 455 | return CENTRALDIRINVALID; |
| 456 | if (uL != 0) |
| 457 | return CENTRALDIRINVALID; |
| 458 | |
| 459 | /* relative offset of the zip64 end of central directory record */ |
| 460 | if (unz64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=UNZ_OK) |
| 461 | return CENTRALDIRINVALID; |
| 462 | |
| 463 | /* total number of disks */ |
| 464 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) |
| 465 | return CENTRALDIRINVALID; |
| 466 | if (uL != 1) |
| 467 | return CENTRALDIRINVALID; |
| 468 | |
| 469 | /* Goto end of central directory record */ |
| 470 | if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 471 | return CENTRALDIRINVALID; |
| 472 | |
| 473 | /* the signature */ |
| 474 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) |
| 475 | return CENTRALDIRINVALID; |
| 476 | |
| 477 | if (uL != 0x06064b50) |
| 478 | return CENTRALDIRINVALID; |
| 479 | |
| 480 | return relativeOffset; |
| 481 | } |
| 482 | |
| 483 | /* |
| 484 | Open a Zip file. path contain the full pathname (by example, |
| 485 | on a Windows NT computer "c:\\test\\zlib114.zip" or on an Unix computer |
| 486 | "zlib/zlib114.zip". |
| 487 | If the zipfile cannot be opened (file doesn't exist or in not valid), the |
| 488 | return value is NULL. |
| 489 | Else, the return value is a unzFile Handle, usable with other function |
| 490 | of this unzip package. |
| 491 | */ |
| 492 | local unzFile unzOpenInternal(const void *path, |
| 493 | zlib_filefunc64_32_def* pzlib_filefunc64_32_def, |
| 494 | int is64bitOpenFunction) { |
| 495 | unz64_s us; |
| 496 | unz64_s *s; |
| 497 | ZPOS64_T central_pos; |
| 498 | uLong uL; |
| 499 | |
| 500 | uLong number_disk; /* number of the current disk, used for |
| 501 | spanning ZIP, unsupported, always 0*/ |
| 502 | uLong number_disk_with_CD; /* number the disk with central dir, used |
| 503 | for spanning ZIP, unsupported, always 0*/ |
| 504 | ZPOS64_T number_entry_CD; /* total number of entries in |
| 505 | the central dir |
| 506 | (same than number_entry on nospan) */ |
| 507 | |
| 508 | int err=UNZ_OK; |
| 509 | |
| 510 | if (unz_copyright[0]!=' ') |
| 511 | return NULL; |
| 512 | |
| 513 | us.z_filefunc.zseek32_file = NULL; |
| 514 | us.z_filefunc.ztell32_file = NULL; |
| 515 | if (pzlib_filefunc64_32_def==NULL) |
| 516 | fill_fopen64_filefunc(&us.z_filefunc.zfile_func64); |
| 517 | else |
| 518 | us.z_filefunc = *pzlib_filefunc64_32_def; |
| 519 | us.is64bitOpenFunction = is64bitOpenFunction; |
| 520 | |
| 521 | |
| 522 | |
| 523 | us.filestream = ZOPEN64(us.z_filefunc, |
| 524 | path, |
| 525 | ZLIB_FILEFUNC_MODE_READ | |
| 526 | ZLIB_FILEFUNC_MODE_EXISTING); |
| 527 | if (us.filestream==NULL) |
| 528 | return NULL; |
| 529 | |
| 530 | central_pos = unz64local_SearchCentralDir64(&us.z_filefunc,us.filestream); |
| 531 | if (central_pos!=CENTRALDIRINVALID) |
| 532 | { |
| 533 | uLong uS; |
| 534 | ZPOS64_T uL64; |
| 535 | |
| 536 | us.isZip64 = 1; |
| 537 | |
| 538 | if (ZSEEK64(us.z_filefunc, us.filestream, |
| 539 | central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 540 | err=UNZ_ERRNO; |
| 541 | |
| 542 | /* the signature, already checked */ |
| 543 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 544 | err=UNZ_ERRNO; |
| 545 | |
| 546 | /* size of zip64 end of central directory record */ |
| 547 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&uL64)!=UNZ_OK) |
| 548 | err=UNZ_ERRNO; |
| 549 | |
| 550 | /* version made by */ |
| 551 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK) |
| 552 | err=UNZ_ERRNO; |
| 553 | |
| 554 | /* version needed to extract */ |
| 555 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK) |
| 556 | err=UNZ_ERRNO; |
| 557 | |
| 558 | /* number of this disk */ |
| 559 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK) |
| 560 | err=UNZ_ERRNO; |
| 561 | |
| 562 | /* number of the disk with the start of the central directory */ |
| 563 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK) |
| 564 | err=UNZ_ERRNO; |
| 565 | |
| 566 | /* total number of entries in the central directory on this disk */ |
| 567 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK) |
| 568 | err=UNZ_ERRNO; |
| 569 | |
| 570 | /* total number of entries in the central directory */ |
| 571 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&number_entry_CD)!=UNZ_OK) |
| 572 | err=UNZ_ERRNO; |
| 573 | |
| 574 | if ((number_entry_CD!=us.gi.number_entry) || |
| 575 | (number_disk_with_CD!=0) || |
| 576 | (number_disk!=0)) |
| 577 | err=UNZ_BADZIPFILE; |
| 578 | |
| 579 | /* size of the central directory */ |
| 580 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.size_central_dir)!=UNZ_OK) |
| 581 | err=UNZ_ERRNO; |
| 582 | |
| 583 | /* offset of start of central directory with respect to the |
| 584 | starting disk number */ |
| 585 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK) |
| 586 | err=UNZ_ERRNO; |
| 587 | |
| 588 | us.gi.size_comment = 0; |
| 589 | } |
| 590 | else |
| 591 | { |
| 592 | central_pos = unz64local_SearchCentralDir(&us.z_filefunc,us.filestream); |
| 593 | if (central_pos==CENTRALDIRINVALID) |
| 594 | err=UNZ_ERRNO; |
| 595 | |
| 596 | us.isZip64 = 0; |
| 597 | |
| 598 | if (ZSEEK64(us.z_filefunc, us.filestream, |
| 599 | central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 600 | err=UNZ_ERRNO; |
| 601 | |
| 602 | /* the signature, already checked */ |
| 603 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 604 | err=UNZ_ERRNO; |
| 605 | |
| 606 | /* number of this disk */ |
| 607 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK) |
| 608 | err=UNZ_ERRNO; |
| 609 | |
| 610 | /* number of the disk with the start of the central directory */ |
| 611 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK) |
| 612 | err=UNZ_ERRNO; |
| 613 | |
| 614 | /* total number of entries in the central dir on this disk */ |
| 615 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 616 | err=UNZ_ERRNO; |
| 617 | us.gi.number_entry = uL; |
| 618 | |
| 619 | /* total number of entries in the central dir */ |
| 620 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 621 | err=UNZ_ERRNO; |
| 622 | number_entry_CD = uL; |
| 623 | |
| 624 | if ((number_entry_CD!=us.gi.number_entry) || |
| 625 | (number_disk_with_CD!=0) || |
| 626 | (number_disk!=0)) |
| 627 | err=UNZ_BADZIPFILE; |
| 628 | |
| 629 | /* size of the central directory */ |
| 630 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 631 | err=UNZ_ERRNO; |
| 632 | us.size_central_dir = uL; |
| 633 | |
| 634 | /* offset of start of central directory with respect to the |
| 635 | starting disk number */ |
| 636 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) |
| 637 | err=UNZ_ERRNO; |
| 638 | us.offset_central_dir = uL; |
| 639 | |
| 640 | /* zipfile comment length */ |
| 641 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&us.gi.size_comment)!=UNZ_OK) |
| 642 | err=UNZ_ERRNO; |
| 643 | } |
| 644 | |
| 645 | if ((central_pos<us.offset_central_dir+us.size_central_dir) && |
| 646 | (err==UNZ_OK)) |
| 647 | err=UNZ_BADZIPFILE; |
| 648 | |
| 649 | if (err!=UNZ_OK) |
| 650 | { |
| 651 | ZCLOSE64(us.z_filefunc, us.filestream); |
| 652 | return NULL; |
| 653 | } |
| 654 | |
| 655 | us.byte_before_the_zipfile = central_pos - |
| 656 | (us.offset_central_dir+us.size_central_dir); |
| 657 | us.central_pos = central_pos; |
| 658 | us.pfile_in_zip_read = NULL; |
| 659 | us.encrypted = 0; |
| 660 | |
| 661 | |
| 662 | s=(unz64_s*)ALLOC(sizeof(unz64_s)); |
| 663 | if( s != NULL) |
| 664 | { |
| 665 | *s=us; |
| 666 | unzGoToFirstFile((unzFile)s); |
| 667 | } |
| 668 | return (unzFile)s; |
| 669 | } |
| 670 | |
| 671 | |
| 672 | extern unzFile ZEXPORT unzOpen2(const char *path, |
| 673 | zlib_filefunc_def* pzlib_filefunc32_def) { |
| 674 | if (pzlib_filefunc32_def != NULL) |
| 675 | { |
| 676 | zlib_filefunc64_32_def zlib_filefunc64_32_def_fill; |
| 677 | fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill,pzlib_filefunc32_def); |
| 678 | return unzOpenInternal(path, &zlib_filefunc64_32_def_fill, 0); |
| 679 | } |
| 680 | else |
| 681 | return unzOpenInternal(path, NULL, 0); |
| 682 | } |
| 683 | |
| 684 | extern unzFile ZEXPORT unzOpen2_64(const void *path, |
| 685 | zlib_filefunc64_def* pzlib_filefunc_def) { |
| 686 | if (pzlib_filefunc_def != NULL) |
| 687 | { |
| 688 | zlib_filefunc64_32_def zlib_filefunc64_32_def_fill; |
| 689 | zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def; |
| 690 | zlib_filefunc64_32_def_fill.ztell32_file = NULL; |
| 691 | zlib_filefunc64_32_def_fill.zseek32_file = NULL; |
| 692 | return unzOpenInternal(path, &zlib_filefunc64_32_def_fill, 1); |
| 693 | } |
| 694 | else |
| 695 | return unzOpenInternal(path, NULL, 1); |
| 696 | } |
| 697 | |
| 698 | extern unzFile ZEXPORT unzOpen(const char *path) { |
| 699 | return unzOpenInternal(path, NULL, 0); |
| 700 | } |
| 701 | |
| 702 | extern unzFile ZEXPORT unzOpen64(const void *path) { |
| 703 | return unzOpenInternal(path, NULL, 1); |
| 704 | } |
| 705 | |
| 706 | /* |
| 707 | Close a ZipFile opened with unzOpen. |
| 708 | If there is files inside the .Zip opened with unzOpenCurrentFile (see later), |
| 709 | these files MUST be closed with unzCloseCurrentFile before call unzClose. |
| 710 | return UNZ_OK if there is no problem. */ |
| 711 | extern int ZEXPORT unzClose(unzFile file) { |
| 712 | unz64_s* s; |
| 713 | if (file==NULL) |
| 714 | return UNZ_PARAMERROR; |
| 715 | s=(unz64_s*)file; |
| 716 | |
| 717 | if (s->pfile_in_zip_read!=NULL) |
| 718 | unzCloseCurrentFile(file); |
| 719 | |
| 720 | ZCLOSE64(s->z_filefunc, s->filestream); |
| 721 | free(s); |
| 722 | return UNZ_OK; |
| 723 | } |
| 724 | |
| 725 | |
| 726 | /* |
| 727 | Write info about the ZipFile in the *pglobal_info structure. |
| 728 | No preparation of the structure is needed |
| 729 | return UNZ_OK if there is no problem. */ |
| 730 | extern int ZEXPORT unzGetGlobalInfo64(unzFile file, unz_global_info64* pglobal_info) { |
| 731 | unz64_s* s; |
| 732 | if (file==NULL) |
| 733 | return UNZ_PARAMERROR; |
| 734 | s=(unz64_s*)file; |
| 735 | *pglobal_info=s->gi; |
| 736 | return UNZ_OK; |
| 737 | } |
| 738 | |
| 739 | extern int ZEXPORT unzGetGlobalInfo(unzFile file, unz_global_info* pglobal_info32) { |
| 740 | unz64_s* s; |
| 741 | if (file==NULL) |
| 742 | return UNZ_PARAMERROR; |
| 743 | s=(unz64_s*)file; |
| 744 | /* to do : check if number_entry is not truncated */ |
| 745 | pglobal_info32->number_entry = (uLong)s->gi.number_entry; |
| 746 | pglobal_info32->size_comment = s->gi.size_comment; |
| 747 | return UNZ_OK; |
| 748 | } |
| 749 | /* |
| 750 | Translate date/time from Dos format to tm_unz (readable more easily) |
| 751 | */ |
| 752 | local void unz64local_DosDateToTmuDate(ZPOS64_T ulDosDate, tm_unz* ptm) { |
| 753 | ZPOS64_T uDate; |
| 754 | uDate = (ZPOS64_T)(ulDosDate>>16); |
| 755 | ptm->tm_mday = (int)(uDate&0x1f) ; |
| 756 | ptm->tm_mon = (int)((((uDate)&0x1E0)/0x20)-1) ; |
| 757 | ptm->tm_year = (int)(((uDate&0x0FE00)/0x0200)+1980) ; |
| 758 | |
| 759 | ptm->tm_hour = (int) ((ulDosDate &0xF800)/0x800); |
| 760 | ptm->tm_min = (int) ((ulDosDate&0x7E0)/0x20) ; |
| 761 | ptm->tm_sec = (int) (2*(ulDosDate&0x1f)) ; |
| 762 | } |
| 763 | |
| 764 | /* |
| 765 | Get Info about the current file in the zipfile, with internal only info |
| 766 | */ |
| 767 | local int unz64local_GetCurrentFileInfoInternal(unzFile file, |
| 768 | unz_file_info64 *pfile_info, |
| 769 | unz_file_info64_internal |
| 770 | *pfile_info_internal, |
| 771 | char *szFileName, |
| 772 | uLong fileNameBufferSize, |
| 773 | void *extraField, |
| 774 | uLong extraFieldBufferSize, |
| 775 | char *szComment, |
| 776 | uLong commentBufferSize) { |
| 777 | unz64_s* s; |
| 778 | unz_file_info64 file_info; |
| 779 | unz_file_info64_internal file_info_internal; |
| 780 | int err=UNZ_OK; |
| 781 | uLong uMagic; |
| 782 | long lSeek=0; |
| 783 | uLong uL; |
| 784 | |
| 785 | if (file==NULL) |
| 786 | return UNZ_PARAMERROR; |
| 787 | s=(unz64_s*)file; |
| 788 | if (ZSEEK64(s->z_filefunc, s->filestream, |
| 789 | s->pos_in_central_dir+s->byte_before_the_zipfile, |
| 790 | ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 791 | err=UNZ_ERRNO; |
| 792 | |
| 793 | |
| 794 | /* we check the magic */ |
| 795 | if (err==UNZ_OK) |
| 796 | { |
| 797 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK) |
| 798 | err=UNZ_ERRNO; |
| 799 | else if (uMagic!=0x02014b50) |
| 800 | err=UNZ_BADZIPFILE; |
| 801 | } |
| 802 | |
| 803 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK) |
| 804 | err=UNZ_ERRNO; |
| 805 | |
| 806 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK) |
| 807 | err=UNZ_ERRNO; |
| 808 | |
| 809 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK) |
| 810 | err=UNZ_ERRNO; |
| 811 | |
| 812 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK) |
| 813 | err=UNZ_ERRNO; |
| 814 | |
| 815 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK) |
| 816 | err=UNZ_ERRNO; |
| 817 | |
| 818 | unz64local_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date); |
| 819 | |
| 820 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK) |
| 821 | err=UNZ_ERRNO; |
| 822 | |
| 823 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) |
| 824 | err=UNZ_ERRNO; |
| 825 | file_info.compressed_size = uL; |
| 826 | |
| 827 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) |
| 828 | err=UNZ_ERRNO; |
| 829 | file_info.uncompressed_size = uL; |
| 830 | |
| 831 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK) |
| 832 | err=UNZ_ERRNO; |
| 833 | |
| 834 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK) |
| 835 | err=UNZ_ERRNO; |
| 836 | |
| 837 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK) |
| 838 | err=UNZ_ERRNO; |
| 839 | |
| 840 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK) |
| 841 | err=UNZ_ERRNO; |
| 842 | |
| 843 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK) |
| 844 | err=UNZ_ERRNO; |
| 845 | |
| 846 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK) |
| 847 | err=UNZ_ERRNO; |
| 848 | |
| 849 | // relative offset of local header |
| 850 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) |
| 851 | err=UNZ_ERRNO; |
| 852 | file_info_internal.offset_curfile = uL; |
| 853 | |
| 854 | lSeek+=file_info.size_filename; |
| 855 | if ((err==UNZ_OK) && (szFileName!=NULL)) |
| 856 | { |
| 857 | uLong uSizeRead ; |
| 858 | if (file_info.size_filename<fileNameBufferSize) |
| 859 | { |
| 860 | *(szFileName+file_info.size_filename)='\0'; |
| 861 | uSizeRead = file_info.size_filename; |
| 862 | } |
| 863 | else |
| 864 | uSizeRead = fileNameBufferSize; |
| 865 | |
| 866 | if ((file_info.size_filename>0) && (fileNameBufferSize>0)) |
| 867 | if (ZREAD64(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead) |
| 868 | err=UNZ_ERRNO; |
| 869 | lSeek -= uSizeRead; |
| 870 | } |
| 871 | |
| 872 | // Read extrafield |
| 873 | if ((err==UNZ_OK) && (extraField!=NULL)) |
| 874 | { |
| 875 | ZPOS64_T uSizeRead ; |
| 876 | if (file_info.size_file_extra<extraFieldBufferSize) |
| 877 | uSizeRead = file_info.size_file_extra; |
| 878 | else |
| 879 | uSizeRead = extraFieldBufferSize; |
| 880 | |
| 881 | if (lSeek!=0) |
| 882 | { |
| 883 | if (ZSEEK64(s->z_filefunc, s->filestream,(ZPOS64_T)lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) |
| 884 | lSeek=0; |
| 885 | else |
| 886 | err=UNZ_ERRNO; |
| 887 | } |
| 888 | |
| 889 | if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0)) |
| 890 | if (ZREAD64(s->z_filefunc, s->filestream,extraField,(uLong)uSizeRead)!=uSizeRead) |
| 891 | err=UNZ_ERRNO; |
| 892 | |
| 893 | lSeek += file_info.size_file_extra - (uLong)uSizeRead; |
| 894 | } |
| 895 | else |
| 896 | lSeek += file_info.size_file_extra; |
| 897 | |
| 898 | |
| 899 | if ((err==UNZ_OK) && (file_info.size_file_extra != 0)) |
| 900 | { |
| 901 | uLong acc = 0; |
| 902 | |
| 903 | // since lSeek now points to after the extra field we need to move back |
| 904 | lSeek -= file_info.size_file_extra; |
| 905 | |
| 906 | if (lSeek!=0) |
| 907 | { |
| 908 | if (ZSEEK64(s->z_filefunc, s->filestream,(ZPOS64_T)lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) |
| 909 | lSeek=0; |
| 910 | else |
| 911 | err=UNZ_ERRNO; |
| 912 | } |
| 913 | |
| 914 | while(acc < file_info.size_file_extra) |
| 915 | { |
| 916 | uLong headerId; |
| 917 | uLong dataSize; |
| 918 | |
| 919 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&headerId) != UNZ_OK) |
| 920 | err=UNZ_ERRNO; |
| 921 | |
| 922 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&dataSize) != UNZ_OK) |
| 923 | err=UNZ_ERRNO; |
| 924 | |
| 925 | /* ZIP64 extra fields */ |
| 926 | if (headerId == 0x0001) |
| 927 | { |
| 928 | if(file_info.uncompressed_size == MAXU32) |
| 929 | { |
| 930 | if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK) |
| 931 | err=UNZ_ERRNO; |
| 932 | } |
| 933 | |
| 934 | if(file_info.compressed_size == MAXU32) |
| 935 | { |
| 936 | if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK) |
| 937 | err=UNZ_ERRNO; |
| 938 | } |
| 939 | |
| 940 | if(file_info_internal.offset_curfile == MAXU32) |
| 941 | { |
| 942 | /* Relative Header offset */ |
| 943 | if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK) |
| 944 | err=UNZ_ERRNO; |
| 945 | } |
| 946 | |
| 947 | if(file_info.disk_num_start == 0xffff) |
| 948 | { |
| 949 | /* Disk Start Number */ |
| 950 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK) |
| 951 | err=UNZ_ERRNO; |
| 952 | } |
| 953 | |
| 954 | } |
| 955 | else |
| 956 | { |
| 957 | if (ZSEEK64(s->z_filefunc, s->filestream,dataSize,ZLIB_FILEFUNC_SEEK_CUR)!=0) |
| 958 | err=UNZ_ERRNO; |
| 959 | } |
| 960 | |
| 961 | acc += 2 + 2 + dataSize; |
| 962 | } |
| 963 | } |
| 964 | |
| 965 | if ((err==UNZ_OK) && (szComment!=NULL)) |
| 966 | { |
| 967 | uLong uSizeRead ; |
| 968 | if (file_info.size_file_comment<commentBufferSize) |
| 969 | { |
| 970 | *(szComment+file_info.size_file_comment)='\0'; |
| 971 | uSizeRead = file_info.size_file_comment; |
| 972 | } |
| 973 | else |
| 974 | uSizeRead = commentBufferSize; |
| 975 | |
| 976 | if (lSeek!=0) |
| 977 | { |
| 978 | if (ZSEEK64(s->z_filefunc, s->filestream,(ZPOS64_T)lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) |
| 979 | lSeek=0; |
| 980 | else |
| 981 | err=UNZ_ERRNO; |
| 982 | } |
| 983 | |
| 984 | if ((file_info.size_file_comment>0) && (commentBufferSize>0)) |
| 985 | if (ZREAD64(s->z_filefunc, s->filestream,szComment,uSizeRead)!=uSizeRead) |
| 986 | err=UNZ_ERRNO; |
| 987 | lSeek+=file_info.size_file_comment - uSizeRead; |
| 988 | } |
| 989 | else |
| 990 | lSeek+=file_info.size_file_comment; |
| 991 | |
| 992 | |
| 993 | if ((err==UNZ_OK) && (pfile_info!=NULL)) |
| 994 | *pfile_info=file_info; |
| 995 | |
| 996 | if ((err==UNZ_OK) && (pfile_info_internal!=NULL)) |
| 997 | *pfile_info_internal=file_info_internal; |
| 998 | |
| 999 | return err; |
| 1000 | } |
| 1001 | |
| 1002 | |
| 1003 | |
| 1004 | /* |
| 1005 | Write info about the ZipFile in the *pglobal_info structure. |
| 1006 | No preparation of the structure is needed |
| 1007 | return UNZ_OK if there is no problem. |
| 1008 | */ |
| 1009 | extern int ZEXPORT unzGetCurrentFileInfo64(unzFile file, |
| 1010 | unz_file_info64 * pfile_info, |
| 1011 | char * szFileName, uLong fileNameBufferSize, |
| 1012 | void *extraField, uLong extraFieldBufferSize, |
| 1013 | char* szComment, uLong commentBufferSize) { |
| 1014 | return unz64local_GetCurrentFileInfoInternal(file,pfile_info,NULL, |
| 1015 | szFileName,fileNameBufferSize, |
| 1016 | extraField,extraFieldBufferSize, |
| 1017 | szComment,commentBufferSize); |
| 1018 | } |
| 1019 | |
| 1020 | extern int ZEXPORT unzGetCurrentFileInfo(unzFile file, |
| 1021 | unz_file_info * pfile_info, |
| 1022 | char * szFileName, uLong fileNameBufferSize, |
| 1023 | void *extraField, uLong extraFieldBufferSize, |
| 1024 | char* szComment, uLong commentBufferSize) { |
| 1025 | int err; |
| 1026 | unz_file_info64 file_info64; |
| 1027 | err = unz64local_GetCurrentFileInfoInternal(file,&file_info64,NULL, |
| 1028 | szFileName,fileNameBufferSize, |
| 1029 | extraField,extraFieldBufferSize, |
| 1030 | szComment,commentBufferSize); |
| 1031 | if ((err==UNZ_OK) && (pfile_info != NULL)) |
| 1032 | { |
| 1033 | pfile_info->version = file_info64.version; |
| 1034 | pfile_info->version_needed = file_info64.version_needed; |
| 1035 | pfile_info->flag = file_info64.flag; |
| 1036 | pfile_info->compression_method = file_info64.compression_method; |
| 1037 | pfile_info->dosDate = file_info64.dosDate; |
| 1038 | pfile_info->crc = file_info64.crc; |
| 1039 | |
| 1040 | pfile_info->size_filename = file_info64.size_filename; |
| 1041 | pfile_info->size_file_extra = file_info64.size_file_extra; |
| 1042 | pfile_info->size_file_comment = file_info64.size_file_comment; |
| 1043 | |
| 1044 | pfile_info->disk_num_start = file_info64.disk_num_start; |
| 1045 | pfile_info->internal_fa = file_info64.internal_fa; |
| 1046 | pfile_info->external_fa = file_info64.external_fa; |
| 1047 | |
| 1048 | pfile_info->tmu_date = file_info64.tmu_date; |
| 1049 | |
| 1050 | |
| 1051 | pfile_info->compressed_size = (uLong)file_info64.compressed_size; |
| 1052 | pfile_info->uncompressed_size = (uLong)file_info64.uncompressed_size; |
| 1053 | |
| 1054 | } |
| 1055 | return err; |
| 1056 | } |
| 1057 | /* |
| 1058 | Set the current file of the zipfile to the first file. |
| 1059 | return UNZ_OK if there is no problem |
| 1060 | */ |
| 1061 | extern int ZEXPORT unzGoToFirstFile(unzFile file) { |
| 1062 | int err=UNZ_OK; |
| 1063 | unz64_s* s; |
| 1064 | if (file==NULL) |
| 1065 | return UNZ_PARAMERROR; |
| 1066 | s=(unz64_s*)file; |
| 1067 | s->pos_in_central_dir=s->offset_central_dir; |
| 1068 | s->num_file=0; |
| 1069 | err=unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, |
| 1070 | &s->cur_file_info_internal, |
| 1071 | NULL,0,NULL,0,NULL,0); |
| 1072 | s->current_file_ok = (err == UNZ_OK); |
| 1073 | return err; |
| 1074 | } |
| 1075 | |
| 1076 | /* |
| 1077 | Set the current file of the zipfile to the next file. |
| 1078 | return UNZ_OK if there is no problem |
| 1079 | return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest. |
| 1080 | */ |
| 1081 | extern int ZEXPORT unzGoToNextFile(unzFile file) { |
| 1082 | unz64_s* s; |
| 1083 | int err; |
| 1084 | |
| 1085 | if (file==NULL) |
| 1086 | return UNZ_PARAMERROR; |
| 1087 | s=(unz64_s*)file; |
| 1088 | if (!s->current_file_ok) |
| 1089 | return UNZ_END_OF_LIST_OF_FILE; |
| 1090 | if (s->gi.number_entry != 0xffff) /* 2^16 files overflow hack */ |
| 1091 | if (s->num_file+1==s->gi.number_entry) |
| 1092 | return UNZ_END_OF_LIST_OF_FILE; |
| 1093 | |
| 1094 | s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename + |
| 1095 | s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment ; |
| 1096 | s->num_file++; |
| 1097 | err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, |
| 1098 | &s->cur_file_info_internal, |
| 1099 | NULL,0,NULL,0,NULL,0); |
| 1100 | s->current_file_ok = (err == UNZ_OK); |
| 1101 | return err; |
| 1102 | } |
| 1103 | |
| 1104 | |
| 1105 | /* |
| 1106 | Try locate the file szFileName in the zipfile. |
| 1107 | For the iCaseSensitivity signification, see unzStringFileNameCompare |
| 1108 | |
| 1109 | return value : |
| 1110 | UNZ_OK if the file is found. It becomes the current file. |
| 1111 | UNZ_END_OF_LIST_OF_FILE if the file is not found |
| 1112 | */ |
| 1113 | extern int ZEXPORT unzLocateFile(unzFile file, const char *szFileName, int iCaseSensitivity) { |
| 1114 | unz64_s* s; |
| 1115 | int err; |
| 1116 | |
| 1117 | /* We remember the 'current' position in the file so that we can jump |
| 1118 | * back there if we fail. |
| 1119 | */ |
| 1120 | unz_file_info64 cur_file_infoSaved; |
| 1121 | unz_file_info64_internal cur_file_info_internalSaved; |
| 1122 | ZPOS64_T num_fileSaved; |
| 1123 | ZPOS64_T pos_in_central_dirSaved; |
| 1124 | |
| 1125 | |
| 1126 | if (file==NULL) |
| 1127 | return UNZ_PARAMERROR; |
| 1128 | |
| 1129 | if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP) |
| 1130 | return UNZ_PARAMERROR; |
| 1131 | |
| 1132 | s=(unz64_s*)file; |
| 1133 | if (!s->current_file_ok) |
| 1134 | return UNZ_END_OF_LIST_OF_FILE; |
| 1135 | |
| 1136 | /* Save the current state */ |
| 1137 | num_fileSaved = s->num_file; |
| 1138 | pos_in_central_dirSaved = s->pos_in_central_dir; |
| 1139 | cur_file_infoSaved = s->cur_file_info; |
| 1140 | cur_file_info_internalSaved = s->cur_file_info_internal; |
| 1141 | |
| 1142 | err = unzGoToFirstFile(file); |
| 1143 | |
| 1144 | while (err == UNZ_OK) |
| 1145 | { |
| 1146 | char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1]; |
| 1147 | err = unzGetCurrentFileInfo64(file,NULL, |
| 1148 | szCurrentFileName,sizeof(szCurrentFileName)-1, |
| 1149 | NULL,0,NULL,0); |
| 1150 | if (err == UNZ_OK) |
| 1151 | { |
| 1152 | if (unzStringFileNameCompare(szCurrentFileName, |
| 1153 | szFileName,iCaseSensitivity)==0) |
| 1154 | return UNZ_OK; |
| 1155 | err = unzGoToNextFile(file); |
| 1156 | } |
| 1157 | } |
| 1158 | |
| 1159 | /* We failed, so restore the state of the 'current file' to where we |
| 1160 | * were. |
| 1161 | */ |
| 1162 | s->num_file = num_fileSaved ; |
| 1163 | s->pos_in_central_dir = pos_in_central_dirSaved ; |
| 1164 | s->cur_file_info = cur_file_infoSaved; |
| 1165 | s->cur_file_info_internal = cur_file_info_internalSaved; |
| 1166 | return err; |
| 1167 | } |
| 1168 | |
| 1169 | |
| 1170 | /* |
| 1171 | /////////////////////////////////////////// |
| 1172 | // Contributed by Ryan Haksi (mailto://cryogen@infoserve.net) |
| 1173 | // I need random access |
| 1174 | // |
| 1175 | // Further optimization could be realized by adding an ability |
| 1176 | // to cache the directory in memory. The goal being a single |
| 1177 | // comprehensive file read to put the file I need in a memory. |
| 1178 | */ |
| 1179 | |
| 1180 | /* |
| 1181 | typedef struct unz_file_pos_s |
| 1182 | { |
| 1183 | ZPOS64_T pos_in_zip_directory; // offset in file |
| 1184 | ZPOS64_T num_of_file; // # of file |
| 1185 | } unz_file_pos; |
| 1186 | */ |
| 1187 | |
| 1188 | extern int ZEXPORT unzGetFilePos64(unzFile file, unz64_file_pos* file_pos) { |
| 1189 | unz64_s* s; |
| 1190 | |
| 1191 | if (file==NULL || file_pos==NULL) |
| 1192 | return UNZ_PARAMERROR; |
| 1193 | s=(unz64_s*)file; |
| 1194 | if (!s->current_file_ok) |
| 1195 | return UNZ_END_OF_LIST_OF_FILE; |
| 1196 | |
| 1197 | file_pos->pos_in_zip_directory = s->pos_in_central_dir; |
| 1198 | file_pos->num_of_file = s->num_file; |
| 1199 | |
| 1200 | return UNZ_OK; |
| 1201 | } |
| 1202 | |
| 1203 | extern int ZEXPORT unzGetFilePos(unzFile file, unz_file_pos* file_pos) { |
| 1204 | unz64_file_pos file_pos64; |
| 1205 | int err = unzGetFilePos64(file,&file_pos64); |
| 1206 | if (err==UNZ_OK) |
| 1207 | { |
| 1208 | file_pos->pos_in_zip_directory = (uLong)file_pos64.pos_in_zip_directory; |
| 1209 | file_pos->num_of_file = (uLong)file_pos64.num_of_file; |
| 1210 | } |
| 1211 | return err; |
| 1212 | } |
| 1213 | |
| 1214 | extern int ZEXPORT unzGoToFilePos64(unzFile file, const unz64_file_pos* file_pos) { |
| 1215 | unz64_s* s; |
| 1216 | int err; |
| 1217 | |
| 1218 | if (file==NULL || file_pos==NULL) |
| 1219 | return UNZ_PARAMERROR; |
| 1220 | s=(unz64_s*)file; |
| 1221 | |
| 1222 | /* jump to the right spot */ |
| 1223 | s->pos_in_central_dir = file_pos->pos_in_zip_directory; |
| 1224 | s->num_file = file_pos->num_of_file; |
| 1225 | |
| 1226 | /* set the current file */ |
| 1227 | err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, |
| 1228 | &s->cur_file_info_internal, |
| 1229 | NULL,0,NULL,0,NULL,0); |
| 1230 | /* return results */ |
| 1231 | s->current_file_ok = (err == UNZ_OK); |
| 1232 | return err; |
| 1233 | } |
| 1234 | |
| 1235 | extern int ZEXPORT unzGoToFilePos(unzFile file, unz_file_pos* file_pos) { |
| 1236 | unz64_file_pos file_pos64; |
| 1237 | if (file_pos == NULL) |
| 1238 | return UNZ_PARAMERROR; |
| 1239 | |
| 1240 | file_pos64.pos_in_zip_directory = file_pos->pos_in_zip_directory; |
| 1241 | file_pos64.num_of_file = file_pos->num_of_file; |
| 1242 | return unzGoToFilePos64(file,&file_pos64); |
| 1243 | } |
| 1244 | |
| 1245 | /* |
| 1246 | // Unzip Helper Functions - should be here? |
| 1247 | /////////////////////////////////////////// |
| 1248 | */ |
| 1249 | |
| 1250 | /* |
| 1251 | Read the local header of the current zipfile |
| 1252 | Check the coherency of the local header and info in the end of central |
| 1253 | directory about this file |
| 1254 | store in *piSizeVar the size of extra info in local header |
| 1255 | (filename and size of extra field data) |
| 1256 | */ |
| 1257 | local int unz64local_CheckCurrentFileCoherencyHeader(unz64_s* s, uInt* piSizeVar, |
| 1258 | ZPOS64_T * poffset_local_extrafield, |
| 1259 | uInt * psize_local_extrafield) { |
| 1260 | uLong uMagic,uData,uFlags; |
| 1261 | uLong size_filename; |
| 1262 | uLong size_extra_field; |
| 1263 | int err=UNZ_OK; |
| 1264 | |
| 1265 | *piSizeVar = 0; |
| 1266 | *poffset_local_extrafield = 0; |
| 1267 | *psize_local_extrafield = 0; |
| 1268 | |
| 1269 | if (ZSEEK64(s->z_filefunc, s->filestream,s->cur_file_info_internal.offset_curfile + |
| 1270 | s->byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 1271 | return UNZ_ERRNO; |
| 1272 | |
| 1273 | |
| 1274 | if (err==UNZ_OK) |
| 1275 | { |
| 1276 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK) |
| 1277 | err=UNZ_ERRNO; |
| 1278 | else if (uMagic!=0x04034b50) |
| 1279 | err=UNZ_BADZIPFILE; |
| 1280 | } |
| 1281 | |
| 1282 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) |
| 1283 | err=UNZ_ERRNO; |
| 1284 | /* |
| 1285 | else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion)) |
| 1286 | err=UNZ_BADZIPFILE; |
| 1287 | */ |
| 1288 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK) |
| 1289 | err=UNZ_ERRNO; |
| 1290 | |
| 1291 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) |
| 1292 | err=UNZ_ERRNO; |
| 1293 | else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compression_method)) |
| 1294 | err=UNZ_BADZIPFILE; |
| 1295 | |
| 1296 | if ((err==UNZ_OK) && (s->cur_file_info.compression_method!=0) && |
| 1297 | /* #ifdef HAVE_BZIP2 */ |
| 1298 | (s->cur_file_info.compression_method!=Z_BZIP2ED) && |
| 1299 | /* #endif */ |
| 1300 | (s->cur_file_info.compression_method!=Z_DEFLATED)) |
| 1301 | err=UNZ_BADZIPFILE; |
| 1302 | |
| 1303 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */ |
| 1304 | err=UNZ_ERRNO; |
| 1305 | |
| 1306 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* crc */ |
| 1307 | err=UNZ_ERRNO; |
| 1308 | else if ((err==UNZ_OK) && (uData!=s->cur_file_info.crc) && ((uFlags & 8)==0)) |
| 1309 | err=UNZ_BADZIPFILE; |
| 1310 | |
| 1311 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */ |
| 1312 | err=UNZ_ERRNO; |
| 1313 | else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) && ((uFlags & 8)==0)) |
| 1314 | err=UNZ_BADZIPFILE; |
| 1315 | |
| 1316 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */ |
| 1317 | err=UNZ_ERRNO; |
| 1318 | else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) && ((uFlags & 8)==0)) |
| 1319 | err=UNZ_BADZIPFILE; |
| 1320 | |
| 1321 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_filename) != UNZ_OK) |
| 1322 | err=UNZ_ERRNO; |
| 1323 | else if ((err==UNZ_OK) && (size_filename!=s->cur_file_info.size_filename)) |
| 1324 | err=UNZ_BADZIPFILE; |
| 1325 | |
| 1326 | *piSizeVar += (uInt)size_filename; |
| 1327 | |
| 1328 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_extra_field) != UNZ_OK) |
| 1329 | err=UNZ_ERRNO; |
| 1330 | *poffset_local_extrafield= s->cur_file_info_internal.offset_curfile + |
| 1331 | SIZEZIPLOCALHEADER + size_filename; |
| 1332 | *psize_local_extrafield = (uInt)size_extra_field; |
| 1333 | |
| 1334 | *piSizeVar += (uInt)size_extra_field; |
| 1335 | |
| 1336 | return err; |
| 1337 | } |
| 1338 | |
| 1339 | /* |
| 1340 | Open for reading data the current file in the zipfile. |
| 1341 | If there is no error and the file is opened, the return value is UNZ_OK. |
| 1342 | */ |
| 1343 | extern int ZEXPORT unzOpenCurrentFile3(unzFile file, int* method, |
| 1344 | int* level, int raw, const char* password) { |
| 1345 | int err=UNZ_OK; |
| 1346 | uInt iSizeVar; |
| 1347 | unz64_s* s; |
| 1348 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1349 | ZPOS64_T offset_local_extrafield; /* offset of the local extra field */ |
| 1350 | uInt size_local_extrafield; /* size of the local extra field */ |
| 1351 | # ifndef NOUNCRYPT |
| 1352 | char source[12]; |
| 1353 | # else |
| 1354 | if (password != NULL) |
| 1355 | return UNZ_PARAMERROR; |
| 1356 | # endif |
| 1357 | |
| 1358 | if (file==NULL) |
| 1359 | return UNZ_PARAMERROR; |
| 1360 | s=(unz64_s*)file; |
| 1361 | if (!s->current_file_ok) |
| 1362 | return UNZ_PARAMERROR; |
| 1363 | |
| 1364 | if (s->pfile_in_zip_read != NULL) |
| 1365 | unzCloseCurrentFile(file); |
| 1366 | |
| 1367 | if (unz64local_CheckCurrentFileCoherencyHeader(s,&iSizeVar, &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK) |
| 1368 | return UNZ_BADZIPFILE; |
| 1369 | |
| 1370 | pfile_in_zip_read_info = (file_in_zip64_read_info_s*)ALLOC(sizeof(file_in_zip64_read_info_s)); |
| 1371 | if (pfile_in_zip_read_info==NULL) |
| 1372 | return UNZ_INTERNALERROR; |
| 1373 | |
| 1374 | pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE); |
| 1375 | pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield; |
| 1376 | pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield; |
| 1377 | pfile_in_zip_read_info->pos_local_extrafield=0; |
| 1378 | pfile_in_zip_read_info->raw=raw; |
| 1379 | |
| 1380 | if (pfile_in_zip_read_info->read_buffer==NULL) |
| 1381 | { |
| 1382 | free(pfile_in_zip_read_info); |
| 1383 | return UNZ_INTERNALERROR; |
| 1384 | } |
| 1385 | |
| 1386 | pfile_in_zip_read_info->stream_initialised=0; |
| 1387 | |
| 1388 | if (method!=NULL) |
| 1389 | *method = (int)s->cur_file_info.compression_method; |
| 1390 | |
| 1391 | if (level!=NULL) |
| 1392 | { |
| 1393 | *level = 6; |
| 1394 | switch (s->cur_file_info.flag & 0x06) |
| 1395 | { |
| 1396 | case 6 : *level = 1; break; |
| 1397 | case 4 : *level = 2; break; |
| 1398 | case 2 : *level = 9; break; |
| 1399 | } |
| 1400 | } |
| 1401 | |
| 1402 | if ((s->cur_file_info.compression_method!=0) && |
| 1403 | /* #ifdef HAVE_BZIP2 */ |
| 1404 | (s->cur_file_info.compression_method!=Z_BZIP2ED) && |
| 1405 | /* #endif */ |
| 1406 | (s->cur_file_info.compression_method!=Z_DEFLATED)) |
| 1407 | |
| 1408 | err=UNZ_BADZIPFILE; |
| 1409 | |
| 1410 | pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc; |
| 1411 | pfile_in_zip_read_info->crc32=0; |
| 1412 | pfile_in_zip_read_info->total_out_64=0; |
| 1413 | pfile_in_zip_read_info->compression_method = s->cur_file_info.compression_method; |
| 1414 | pfile_in_zip_read_info->filestream=s->filestream; |
| 1415 | pfile_in_zip_read_info->z_filefunc=s->z_filefunc; |
| 1416 | pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile; |
| 1417 | |
| 1418 | pfile_in_zip_read_info->stream.total_out = 0; |
| 1419 | |
| 1420 | if ((s->cur_file_info.compression_method==Z_BZIP2ED) && (!raw)) |
| 1421 | { |
| 1422 | #ifdef HAVE_BZIP2 |
| 1423 | pfile_in_zip_read_info->bstream.bzalloc = (void *(*) (void *, int, int))0; |
| 1424 | pfile_in_zip_read_info->bstream.bzfree = (free_func)0; |
| 1425 | pfile_in_zip_read_info->bstream.opaque = (voidpf)0; |
| 1426 | pfile_in_zip_read_info->bstream.state = (voidpf)0; |
| 1427 | |
| 1428 | pfile_in_zip_read_info->stream.zalloc = (alloc_func)0; |
| 1429 | pfile_in_zip_read_info->stream.zfree = (free_func)0; |
| 1430 | pfile_in_zip_read_info->stream.opaque = (voidpf)0; |
| 1431 | pfile_in_zip_read_info->stream.next_in = (voidpf)0; |
| 1432 | pfile_in_zip_read_info->stream.avail_in = 0; |
| 1433 | |
| 1434 | err=BZ2_bzDecompressInit(&pfile_in_zip_read_info->bstream, 0, 0); |
| 1435 | if (err == Z_OK) |
| 1436 | pfile_in_zip_read_info->stream_initialised=Z_BZIP2ED; |
| 1437 | else |
| 1438 | { |
| 1439 | free(pfile_in_zip_read_info->read_buffer); |
| 1440 | free(pfile_in_zip_read_info); |
| 1441 | return err; |
| 1442 | } |
| 1443 | #else |
| 1444 | pfile_in_zip_read_info->raw=1; |
| 1445 | #endif |
| 1446 | } |
| 1447 | else if ((s->cur_file_info.compression_method==Z_DEFLATED) && (!raw)) |
| 1448 | { |
| 1449 | pfile_in_zip_read_info->stream.zalloc = (alloc_func)0; |
| 1450 | pfile_in_zip_read_info->stream.zfree = (free_func)0; |
| 1451 | pfile_in_zip_read_info->stream.opaque = (voidpf)0; |
| 1452 | pfile_in_zip_read_info->stream.next_in = 0; |
| 1453 | pfile_in_zip_read_info->stream.avail_in = 0; |
| 1454 | |
| 1455 | err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS); |
| 1456 | if (err == Z_OK) |
| 1457 | pfile_in_zip_read_info->stream_initialised=Z_DEFLATED; |
| 1458 | else |
| 1459 | { |
| 1460 | free(pfile_in_zip_read_info->read_buffer); |
| 1461 | free(pfile_in_zip_read_info); |
| 1462 | return err; |
| 1463 | } |
| 1464 | /* windowBits is passed < 0 to tell that there is no zlib header. |
| 1465 | * Note that in this case inflate *requires* an extra "dummy" byte |
| 1466 | * after the compressed stream in order to complete decompression and |
| 1467 | * return Z_STREAM_END. |
| 1468 | * In unzip, i don't wait absolutely Z_STREAM_END because I known the |
| 1469 | * size of both compressed and uncompressed data |
| 1470 | */ |
| 1471 | } |
| 1472 | pfile_in_zip_read_info->rest_read_compressed = |
| 1473 | s->cur_file_info.compressed_size ; |
| 1474 | pfile_in_zip_read_info->rest_read_uncompressed = |
| 1475 | s->cur_file_info.uncompressed_size ; |
| 1476 | |
| 1477 | |
| 1478 | pfile_in_zip_read_info->pos_in_zipfile = |
| 1479 | s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + |
| 1480 | iSizeVar; |
| 1481 | |
| 1482 | pfile_in_zip_read_info->stream.avail_in = (uInt)0; |
| 1483 | |
| 1484 | s->pfile_in_zip_read = pfile_in_zip_read_info; |
| 1485 | s->encrypted = 0; |
| 1486 | |
| 1487 | # ifndef NOUNCRYPT |
| 1488 | if (password != NULL) |
| 1489 | { |
| 1490 | int i; |
| 1491 | s->pcrc_32_tab = get_crc_table(); |
| 1492 | init_keys(password,s->keys,s->pcrc_32_tab); |
| 1493 | if (ZSEEK64(s->z_filefunc, s->filestream, |
| 1494 | s->pfile_in_zip_read->pos_in_zipfile + |
| 1495 | s->pfile_in_zip_read->byte_before_the_zipfile, |
| 1496 | SEEK_SET)!=0) |
| 1497 | return UNZ_INTERNALERROR; |
| 1498 | if(ZREAD64(s->z_filefunc, s->filestream,source, 12)<12) |
| 1499 | return UNZ_INTERNALERROR; |
| 1500 | |
| 1501 | for (i = 0; i<12; i++) |
| 1502 | zdecode(s->keys,s->pcrc_32_tab,source[i]); |
| 1503 | |
| 1504 | s->pfile_in_zip_read->pos_in_zipfile+=12; |
| 1505 | s->encrypted=1; |
| 1506 | } |
| 1507 | # endif |
| 1508 | |
| 1509 | |
| 1510 | return UNZ_OK; |
| 1511 | } |
| 1512 | |
| 1513 | extern int ZEXPORT unzOpenCurrentFile(unzFile file) { |
| 1514 | return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL); |
| 1515 | } |
| 1516 | |
| 1517 | extern int ZEXPORT unzOpenCurrentFilePassword(unzFile file, const char* password) { |
| 1518 | return unzOpenCurrentFile3(file, NULL, NULL, 0, password); |
| 1519 | } |
| 1520 | |
| 1521 | extern int ZEXPORT unzOpenCurrentFile2(unzFile file, int* method, int* level, int raw) { |
| 1522 | return unzOpenCurrentFile3(file, method, level, raw, NULL); |
| 1523 | } |
| 1524 | |
| 1525 | /** Addition for GDAL : START */ |
| 1526 | |
| 1527 | extern ZPOS64_T ZEXPORT unzGetCurrentFileZStreamPos64(unzFile file) { |
| 1528 | unz64_s* s; |
| 1529 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1530 | s=(unz64_s*)file; |
| 1531 | if (file==NULL) |
| 1532 | return 0; //UNZ_PARAMERROR; |
| 1533 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1534 | if (pfile_in_zip_read_info==NULL) |
| 1535 | return 0; //UNZ_PARAMERROR; |
| 1536 | return pfile_in_zip_read_info->pos_in_zipfile + |
| 1537 | pfile_in_zip_read_info->byte_before_the_zipfile; |
| 1538 | } |
| 1539 | |
| 1540 | /** Addition for GDAL : END */ |
| 1541 | |
| 1542 | /* |
| 1543 | Read bytes from the current file. |
| 1544 | buf contain buffer where data must be copied |
| 1545 | len the size of buf. |
| 1546 | |
| 1547 | return the number of byte copied if some bytes are copied |
| 1548 | return 0 if the end of file was reached |
| 1549 | return <0 with error code if there is an error |
| 1550 | (UNZ_ERRNO for IO error, or zLib error for uncompress error) |
| 1551 | */ |
| 1552 | extern int ZEXPORT unzReadCurrentFile(unzFile file, voidp buf, unsigned len) { |
| 1553 | int err=UNZ_OK; |
| 1554 | uInt iRead = 0; |
| 1555 | unz64_s* s; |
| 1556 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1557 | if (file==NULL) |
| 1558 | return UNZ_PARAMERROR; |
| 1559 | s=(unz64_s*)file; |
| 1560 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1561 | |
| 1562 | if (pfile_in_zip_read_info==NULL) |
| 1563 | return UNZ_PARAMERROR; |
| 1564 | |
| 1565 | |
| 1566 | if (pfile_in_zip_read_info->read_buffer == NULL) |
| 1567 | return UNZ_END_OF_LIST_OF_FILE; |
| 1568 | if (len==0) |
| 1569 | return 0; |
| 1570 | |
| 1571 | pfile_in_zip_read_info->stream.next_out = (Bytef*)buf; |
| 1572 | |
| 1573 | pfile_in_zip_read_info->stream.avail_out = (uInt)len; |
| 1574 | |
| 1575 | if ((len>pfile_in_zip_read_info->rest_read_uncompressed) && |
| 1576 | (!(pfile_in_zip_read_info->raw))) |
| 1577 | pfile_in_zip_read_info->stream.avail_out = |
| 1578 | (uInt)pfile_in_zip_read_info->rest_read_uncompressed; |
| 1579 | |
| 1580 | if ((len>pfile_in_zip_read_info->rest_read_compressed+ |
| 1581 | pfile_in_zip_read_info->stream.avail_in) && |
| 1582 | (pfile_in_zip_read_info->raw)) |
| 1583 | pfile_in_zip_read_info->stream.avail_out = |
| 1584 | (uInt)pfile_in_zip_read_info->rest_read_compressed+ |
| 1585 | pfile_in_zip_read_info->stream.avail_in; |
| 1586 | |
| 1587 | while (pfile_in_zip_read_info->stream.avail_out>0) |
| 1588 | { |
| 1589 | if ((pfile_in_zip_read_info->stream.avail_in==0) && |
| 1590 | (pfile_in_zip_read_info->rest_read_compressed>0)) |
| 1591 | { |
| 1592 | uInt uReadThis = UNZ_BUFSIZE; |
| 1593 | if (pfile_in_zip_read_info->rest_read_compressed<uReadThis) |
| 1594 | uReadThis = (uInt)pfile_in_zip_read_info->rest_read_compressed; |
| 1595 | if (uReadThis == 0) |
| 1596 | return UNZ_EOF; |
| 1597 | if (ZSEEK64(pfile_in_zip_read_info->z_filefunc, |
| 1598 | pfile_in_zip_read_info->filestream, |
| 1599 | pfile_in_zip_read_info->pos_in_zipfile + |
| 1600 | pfile_in_zip_read_info->byte_before_the_zipfile, |
| 1601 | ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 1602 | return UNZ_ERRNO; |
| 1603 | if (ZREAD64(pfile_in_zip_read_info->z_filefunc, |
| 1604 | pfile_in_zip_read_info->filestream, |
| 1605 | pfile_in_zip_read_info->read_buffer, |
| 1606 | uReadThis)!=uReadThis) |
| 1607 | return UNZ_ERRNO; |
| 1608 | |
| 1609 | |
| 1610 | # ifndef NOUNCRYPT |
| 1611 | if(s->encrypted) |
| 1612 | { |
| 1613 | uInt i; |
| 1614 | for(i=0;i<uReadThis;i++) |
| 1615 | pfile_in_zip_read_info->read_buffer[i] = |
| 1616 | zdecode(s->keys,s->pcrc_32_tab, |
| 1617 | pfile_in_zip_read_info->read_buffer[i]); |
| 1618 | } |
| 1619 | # endif |
| 1620 | |
| 1621 | |
| 1622 | pfile_in_zip_read_info->pos_in_zipfile += uReadThis; |
| 1623 | |
| 1624 | pfile_in_zip_read_info->rest_read_compressed-=uReadThis; |
| 1625 | |
| 1626 | pfile_in_zip_read_info->stream.next_in = |
| 1627 | (Bytef*)pfile_in_zip_read_info->read_buffer; |
| 1628 | pfile_in_zip_read_info->stream.avail_in = (uInt)uReadThis; |
| 1629 | } |
| 1630 | |
| 1631 | if ((pfile_in_zip_read_info->compression_method==0) || (pfile_in_zip_read_info->raw)) |
| 1632 | { |
| 1633 | uInt uDoCopy,i ; |
| 1634 | |
| 1635 | if ((pfile_in_zip_read_info->stream.avail_in == 0) && |
| 1636 | (pfile_in_zip_read_info->rest_read_compressed == 0)) |
| 1637 | return (iRead==0) ? UNZ_EOF : (int)iRead; |
| 1638 | |
| 1639 | if (pfile_in_zip_read_info->stream.avail_out < |
| 1640 | pfile_in_zip_read_info->stream.avail_in) |
| 1641 | uDoCopy = pfile_in_zip_read_info->stream.avail_out ; |
| 1642 | else |
| 1643 | uDoCopy = pfile_in_zip_read_info->stream.avail_in ; |
| 1644 | |
| 1645 | for (i=0;i<uDoCopy;i++) |
| 1646 | *(pfile_in_zip_read_info->stream.next_out+i) = |
| 1647 | *(pfile_in_zip_read_info->stream.next_in+i); |
| 1648 | |
| 1649 | pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uDoCopy; |
| 1650 | |
| 1651 | pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32, |
| 1652 | pfile_in_zip_read_info->stream.next_out, |
| 1653 | uDoCopy); |
| 1654 | pfile_in_zip_read_info->rest_read_uncompressed-=uDoCopy; |
| 1655 | pfile_in_zip_read_info->stream.avail_in -= uDoCopy; |
| 1656 | pfile_in_zip_read_info->stream.avail_out -= uDoCopy; |
| 1657 | pfile_in_zip_read_info->stream.next_out += uDoCopy; |
| 1658 | pfile_in_zip_read_info->stream.next_in += uDoCopy; |
| 1659 | pfile_in_zip_read_info->stream.total_out += uDoCopy; |
| 1660 | iRead += uDoCopy; |
| 1661 | } |
| 1662 | else if (pfile_in_zip_read_info->compression_method==Z_BZIP2ED) |
| 1663 | { |
| 1664 | #ifdef HAVE_BZIP2 |
| 1665 | uLong uTotalOutBefore,uTotalOutAfter; |
| 1666 | const Bytef *bufBefore; |
| 1667 | uLong uOutThis; |
| 1668 | |
| 1669 | pfile_in_zip_read_info->bstream.next_in = (char*)pfile_in_zip_read_info->stream.next_in; |
| 1670 | pfile_in_zip_read_info->bstream.avail_in = pfile_in_zip_read_info->stream.avail_in; |
| 1671 | pfile_in_zip_read_info->bstream.total_in_lo32 = pfile_in_zip_read_info->stream.total_in; |
| 1672 | pfile_in_zip_read_info->bstream.total_in_hi32 = 0; |
| 1673 | pfile_in_zip_read_info->bstream.next_out = (char*)pfile_in_zip_read_info->stream.next_out; |
| 1674 | pfile_in_zip_read_info->bstream.avail_out = pfile_in_zip_read_info->stream.avail_out; |
| 1675 | pfile_in_zip_read_info->bstream.total_out_lo32 = pfile_in_zip_read_info->stream.total_out; |
| 1676 | pfile_in_zip_read_info->bstream.total_out_hi32 = 0; |
| 1677 | |
| 1678 | uTotalOutBefore = pfile_in_zip_read_info->bstream.total_out_lo32; |
| 1679 | bufBefore = (const Bytef *)pfile_in_zip_read_info->bstream.next_out; |
| 1680 | |
| 1681 | err=BZ2_bzDecompress(&pfile_in_zip_read_info->bstream); |
| 1682 | |
| 1683 | uTotalOutAfter = pfile_in_zip_read_info->bstream.total_out_lo32; |
| 1684 | uOutThis = uTotalOutAfter-uTotalOutBefore; |
| 1685 | |
| 1686 | pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis; |
| 1687 | |
| 1688 | pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,bufBefore, (uInt)(uOutThis)); |
| 1689 | pfile_in_zip_read_info->rest_read_uncompressed -= uOutThis; |
| 1690 | iRead += (uInt)(uTotalOutAfter - uTotalOutBefore); |
| 1691 | |
| 1692 | pfile_in_zip_read_info->stream.next_in = (Bytef*)pfile_in_zip_read_info->bstream.next_in; |
| 1693 | pfile_in_zip_read_info->stream.avail_in = pfile_in_zip_read_info->bstream.avail_in; |
| 1694 | pfile_in_zip_read_info->stream.total_in = pfile_in_zip_read_info->bstream.total_in_lo32; |
| 1695 | pfile_in_zip_read_info->stream.next_out = (Bytef*)pfile_in_zip_read_info->bstream.next_out; |
| 1696 | pfile_in_zip_read_info->stream.avail_out = pfile_in_zip_read_info->bstream.avail_out; |
| 1697 | pfile_in_zip_read_info->stream.total_out = pfile_in_zip_read_info->bstream.total_out_lo32; |
| 1698 | |
| 1699 | if (err==BZ_STREAM_END) |
| 1700 | return (iRead==0) ? UNZ_EOF : iRead; |
| 1701 | if (err!=BZ_OK) |
| 1702 | break; |
| 1703 | #endif |
| 1704 | } // end Z_BZIP2ED |
| 1705 | else |
| 1706 | { |
| 1707 | ZPOS64_T uTotalOutBefore,uTotalOutAfter; |
| 1708 | const Bytef *bufBefore; |
| 1709 | ZPOS64_T uOutThis; |
| 1710 | int flush=Z_SYNC_FLUSH; |
| 1711 | |
| 1712 | uTotalOutBefore = pfile_in_zip_read_info->stream.total_out; |
| 1713 | bufBefore = pfile_in_zip_read_info->stream.next_out; |
| 1714 | |
| 1715 | /* |
| 1716 | if ((pfile_in_zip_read_info->rest_read_uncompressed == |
| 1717 | pfile_in_zip_read_info->stream.avail_out) && |
| 1718 | (pfile_in_zip_read_info->rest_read_compressed == 0)) |
| 1719 | flush = Z_FINISH; |
| 1720 | */ |
| 1721 | err=inflate(&pfile_in_zip_read_info->stream,flush); |
| 1722 | |
| 1723 | if ((err>=0) && (pfile_in_zip_read_info->stream.msg!=NULL)) |
| 1724 | err = Z_DATA_ERROR; |
| 1725 | |
| 1726 | uTotalOutAfter = pfile_in_zip_read_info->stream.total_out; |
| 1727 | /* Detect overflow, because z_stream.total_out is uLong (32 bits) */ |
| 1728 | if (uTotalOutAfter<uTotalOutBefore) |
| 1729 | uTotalOutAfter += 1LL << 32; /* Add maximum value of uLong + 1 */ |
| 1730 | uOutThis = uTotalOutAfter-uTotalOutBefore; |
| 1731 | |
| 1732 | pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis; |
| 1733 | |
| 1734 | pfile_in_zip_read_info->crc32 = |
| 1735 | crc32(pfile_in_zip_read_info->crc32,bufBefore, |
| 1736 | (uInt)(uOutThis)); |
| 1737 | |
| 1738 | pfile_in_zip_read_info->rest_read_uncompressed -= |
| 1739 | uOutThis; |
| 1740 | |
| 1741 | iRead += (uInt)(uTotalOutAfter - uTotalOutBefore); |
| 1742 | |
| 1743 | if (err==Z_STREAM_END) |
| 1744 | return (iRead==0) ? UNZ_EOF : (int)iRead; |
| 1745 | if (err!=Z_OK) |
| 1746 | break; |
| 1747 | } |
| 1748 | } |
| 1749 | |
| 1750 | if (err==Z_OK) |
| 1751 | return (int)iRead; |
| 1752 | return err; |
| 1753 | } |
| 1754 | |
| 1755 | |
| 1756 | /* |
| 1757 | Give the current position in uncompressed data |
| 1758 | */ |
| 1759 | extern z_off_t ZEXPORT unztell(unzFile file) { |
| 1760 | unz64_s* s; |
| 1761 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1762 | if (file==NULL) |
| 1763 | return UNZ_PARAMERROR; |
| 1764 | s=(unz64_s*)file; |
| 1765 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1766 | |
| 1767 | if (pfile_in_zip_read_info==NULL) |
| 1768 | return UNZ_PARAMERROR; |
| 1769 | |
| 1770 | return (z_off_t)pfile_in_zip_read_info->stream.total_out; |
| 1771 | } |
| 1772 | |
| 1773 | extern ZPOS64_T ZEXPORT unztell64(unzFile file) { |
| 1774 | |
| 1775 | unz64_s* s; |
| 1776 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1777 | if (file==NULL) |
| 1778 | return (ZPOS64_T)-1; |
| 1779 | s=(unz64_s*)file; |
| 1780 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1781 | |
| 1782 | if (pfile_in_zip_read_info==NULL) |
| 1783 | return (ZPOS64_T)-1; |
| 1784 | |
| 1785 | return pfile_in_zip_read_info->total_out_64; |
| 1786 | } |
| 1787 | |
| 1788 | |
| 1789 | /* |
| 1790 | return 1 if the end of file was reached, 0 elsewhere |
| 1791 | */ |
| 1792 | extern int ZEXPORT unzeof(unzFile file) { |
| 1793 | unz64_s* s; |
| 1794 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1795 | if (file==NULL) |
| 1796 | return UNZ_PARAMERROR; |
| 1797 | s=(unz64_s*)file; |
| 1798 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1799 | |
| 1800 | if (pfile_in_zip_read_info==NULL) |
| 1801 | return UNZ_PARAMERROR; |
| 1802 | |
| 1803 | if (pfile_in_zip_read_info->rest_read_uncompressed == 0) |
| 1804 | return 1; |
| 1805 | else |
| 1806 | return 0; |
| 1807 | } |
| 1808 | |
| 1809 | |
| 1810 | |
| 1811 | /* |
| 1812 | Read extra field from the current file (opened by unzOpenCurrentFile) |
| 1813 | This is the local-header version of the extra field (sometimes, there is |
| 1814 | more info in the local-header version than in the central-header) |
| 1815 | |
| 1816 | if buf==NULL, it return the size of the local extra field that can be read |
| 1817 | |
| 1818 | if buf!=NULL, len is the size of the buffer, the extra header is copied in |
| 1819 | buf. |
| 1820 | the return value is the number of bytes copied in buf, or (if <0) |
| 1821 | the error code |
| 1822 | */ |
| 1823 | extern int ZEXPORT unzGetLocalExtrafield(unzFile file, voidp buf, unsigned len) { |
| 1824 | unz64_s* s; |
| 1825 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1826 | uInt read_now; |
| 1827 | ZPOS64_T size_to_read; |
| 1828 | |
| 1829 | if (file==NULL) |
| 1830 | return UNZ_PARAMERROR; |
| 1831 | s=(unz64_s*)file; |
| 1832 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1833 | |
| 1834 | if (pfile_in_zip_read_info==NULL) |
| 1835 | return UNZ_PARAMERROR; |
| 1836 | |
| 1837 | size_to_read = (pfile_in_zip_read_info->size_local_extrafield - |
| 1838 | pfile_in_zip_read_info->pos_local_extrafield); |
| 1839 | |
| 1840 | if (buf==NULL) |
| 1841 | return (int)size_to_read; |
| 1842 | |
| 1843 | if (len>size_to_read) |
| 1844 | read_now = (uInt)size_to_read; |
| 1845 | else |
| 1846 | read_now = (uInt)len ; |
| 1847 | |
| 1848 | if (read_now==0) |
| 1849 | return 0; |
| 1850 | |
| 1851 | if (ZSEEK64(pfile_in_zip_read_info->z_filefunc, |
| 1852 | pfile_in_zip_read_info->filestream, |
| 1853 | pfile_in_zip_read_info->offset_local_extrafield + |
| 1854 | pfile_in_zip_read_info->pos_local_extrafield, |
| 1855 | ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 1856 | return UNZ_ERRNO; |
| 1857 | |
| 1858 | if (ZREAD64(pfile_in_zip_read_info->z_filefunc, |
| 1859 | pfile_in_zip_read_info->filestream, |
| 1860 | buf,read_now)!=read_now) |
| 1861 | return UNZ_ERRNO; |
| 1862 | |
| 1863 | return (int)read_now; |
| 1864 | } |
| 1865 | |
| 1866 | /* |
| 1867 | Close the file in zip opened with unzOpenCurrentFile |
| 1868 | Return UNZ_CRCERROR if all the file was read but the CRC is not good |
| 1869 | */ |
| 1870 | extern int ZEXPORT unzCloseCurrentFile(unzFile file) { |
| 1871 | int err=UNZ_OK; |
| 1872 | |
| 1873 | unz64_s* s; |
| 1874 | file_in_zip64_read_info_s* pfile_in_zip_read_info; |
| 1875 | if (file==NULL) |
| 1876 | return UNZ_PARAMERROR; |
| 1877 | s=(unz64_s*)file; |
| 1878 | pfile_in_zip_read_info=s->pfile_in_zip_read; |
| 1879 | |
| 1880 | if (pfile_in_zip_read_info==NULL) |
| 1881 | return UNZ_PARAMERROR; |
| 1882 | |
| 1883 | |
| 1884 | if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) && |
| 1885 | (!pfile_in_zip_read_info->raw)) |
| 1886 | { |
| 1887 | if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait) |
| 1888 | err=UNZ_CRCERROR; |
| 1889 | } |
| 1890 | |
| 1891 | |
| 1892 | free(pfile_in_zip_read_info->read_buffer); |
| 1893 | pfile_in_zip_read_info->read_buffer = NULL; |
| 1894 | if (pfile_in_zip_read_info->stream_initialised == Z_DEFLATED) |
| 1895 | inflateEnd(&pfile_in_zip_read_info->stream); |
| 1896 | #ifdef HAVE_BZIP2 |
| 1897 | else if (pfile_in_zip_read_info->stream_initialised == Z_BZIP2ED) |
| 1898 | BZ2_bzDecompressEnd(&pfile_in_zip_read_info->bstream); |
| 1899 | #endif |
| 1900 | |
| 1901 | |
| 1902 | pfile_in_zip_read_info->stream_initialised = 0; |
| 1903 | free(pfile_in_zip_read_info); |
| 1904 | |
| 1905 | s->pfile_in_zip_read=NULL; |
| 1906 | |
| 1907 | return err; |
| 1908 | } |
| 1909 | |
| 1910 | |
| 1911 | /* |
| 1912 | Get the global comment string of the ZipFile, in the szComment buffer. |
| 1913 | uSizeBuf is the size of the szComment buffer. |
| 1914 | return the number of byte copied or an error code <0 |
| 1915 | */ |
| 1916 | extern int ZEXPORT unzGetGlobalComment(unzFile file, char * szComment, uLong uSizeBuf) { |
| 1917 | unz64_s* s; |
| 1918 | uLong uReadThis ; |
| 1919 | if (file==NULL) |
| 1920 | return (int)UNZ_PARAMERROR; |
| 1921 | s=(unz64_s*)file; |
| 1922 | |
| 1923 | uReadThis = uSizeBuf; |
| 1924 | if (uReadThis>s->gi.size_comment) |
| 1925 | uReadThis = s->gi.size_comment; |
| 1926 | |
| 1927 | if (ZSEEK64(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0) |
| 1928 | return UNZ_ERRNO; |
| 1929 | |
| 1930 | if (uReadThis>0) |
| 1931 | { |
| 1932 | *szComment='\0'; |
| 1933 | if (ZREAD64(s->z_filefunc,s->filestream,szComment,uReadThis)!=uReadThis) |
| 1934 | return UNZ_ERRNO; |
| 1935 | } |
| 1936 | |
| 1937 | if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment)) |
| 1938 | *(szComment+s->gi.size_comment)='\0'; |
| 1939 | return (int)uReadThis; |
| 1940 | } |
| 1941 | |
| 1942 | /* Additions by RX '2004 */ |
| 1943 | extern ZPOS64_T ZEXPORT unzGetOffset64(unzFile file) { |
| 1944 | unz64_s* s; |
| 1945 | |
| 1946 | if (file==NULL) |
| 1947 | return 0; //UNZ_PARAMERROR; |
| 1948 | s=(unz64_s*)file; |
| 1949 | if (!s->current_file_ok) |
| 1950 | return 0; |
| 1951 | if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff) |
| 1952 | if (s->num_file==s->gi.number_entry) |
| 1953 | return 0; |
| 1954 | return s->pos_in_central_dir; |
| 1955 | } |
| 1956 | |
| 1957 | extern uLong ZEXPORT unzGetOffset(unzFile file) { |
| 1958 | ZPOS64_T offset64; |
| 1959 | |
| 1960 | if (file==NULL) |
| 1961 | return 0; //UNZ_PARAMERROR; |
| 1962 | offset64 = unzGetOffset64(file); |
| 1963 | return (uLong)offset64; |
| 1964 | } |
| 1965 | |
| 1966 | extern int ZEXPORT unzSetOffset64(unzFile file, ZPOS64_T pos) { |
| 1967 | unz64_s* s; |
| 1968 | int err; |
| 1969 | |
| 1970 | if (file==NULL) |
| 1971 | return UNZ_PARAMERROR; |
| 1972 | s=(unz64_s*)file; |
| 1973 | |
| 1974 | s->pos_in_central_dir = pos; |
| 1975 | s->num_file = s->gi.number_entry; /* hack */ |
| 1976 | err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, |
| 1977 | &s->cur_file_info_internal, |
| 1978 | NULL,0,NULL,0,NULL,0); |
| 1979 | s->current_file_ok = (err == UNZ_OK); |
| 1980 | return err; |
| 1981 | } |
| 1982 | |
| 1983 | extern int ZEXPORT unzSetOffset (unzFile file, uLong pos) { |
| 1984 | return unzSetOffset64(file,pos); |
| 1985 | } |