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) { 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 z_crc_t* 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 successfully 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+(unsigned)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+(unsigned)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 unzOpen. 805 If there is files inside the .Zip opened with unzOpenCurrentFile (see later), 806 these files MUST be closed with unzCloseCurrentFile before call unzClose. 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 = (int)(uDate&0x1f) ; 857 ptm->tm_mon = (int)((((uDate)&0x1E0)/0x20)-1) ; 858 ptm->tm_year = (int)(((uDate&0x0FE00)/0x0200)+1980) ; 859 860 ptm->tm_hour = (int) ((ulDosDate &0xF800)/0x800); 861 ptm->tm_min = (int) ((ulDosDate&0x7E0)/0x20) ; 862 ptm->tm_sec = (int) (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,(ZPOS64_T)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,(ZPOS64_T)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,(ZPOS64_T)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 unzStringFileNameCompare 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->read_buffer); 1570 TRYFREE(pfile_in_zip_read_info); 1571 return err; 1572 } 1573 #else 1574 pfile_in_zip_read_info->raw=1; 1575 #endif 1576 } 1577 else if ((s->cur_file_info.compression_method==Z_DEFLATED) && (!raw)) 1578 { 1579 pfile_in_zip_read_info->stream.zalloc = (alloc_func)0; 1580 pfile_in_zip_read_info->stream.zfree = (free_func)0; 1581 pfile_in_zip_read_info->stream.opaque = (voidpf)0; 1582 pfile_in_zip_read_info->stream.next_in = 0; 1583 pfile_in_zip_read_info->stream.avail_in = 0; 1584 1585 err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS); 1586 if (err == Z_OK) 1587 pfile_in_zip_read_info->stream_initialised=Z_DEFLATED; 1588 else 1589 { 1590 TRYFREE(pfile_in_zip_read_info->read_buffer); 1591 TRYFREE(pfile_in_zip_read_info); 1592 return err; 1593 } 1594 /* windowBits is passed < 0 to tell that there is no zlib header. 1595 * Note that in this case inflate *requires* an extra "dummy" byte 1596 * after the compressed stream in order to complete decompression and 1597 * return Z_STREAM_END. 1598 * In unzip, i don't wait absolutely Z_STREAM_END because I known the 1599 * size of both compressed and uncompressed data 1600 */ 1601 } 1602 pfile_in_zip_read_info->rest_read_compressed = 1603 s->cur_file_info.compressed_size ; 1604 pfile_in_zip_read_info->rest_read_uncompressed = 1605 s->cur_file_info.uncompressed_size ; 1606 1607 1608 pfile_in_zip_read_info->pos_in_zipfile = 1609 s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + 1610 iSizeVar; 1611 1612 pfile_in_zip_read_info->stream.avail_in = (uInt)0; 1613 1614 s->pfile_in_zip_read = pfile_in_zip_read_info; 1615 s->encrypted = 0; 1616 1617 # ifndef NOUNCRYPT 1618 if (password != NULL) 1619 { 1620 int i; 1621 s->pcrc_32_tab = get_crc_table(); 1622 init_keys(password,s->keys,s->pcrc_32_tab); 1623 if (ZSEEK64(s->z_filefunc, s->filestream, 1624 s->pfile_in_zip_read->pos_in_zipfile + 1625 s->pfile_in_zip_read->byte_before_the_zipfile, 1626 SEEK_SET)!=0) 1627 return UNZ_INTERNALERROR; 1628 if(ZREAD64(s->z_filefunc, s->filestream,source, 12)<12) 1629 return UNZ_INTERNALERROR; 1630 1631 for (i = 0; i<12; i++) 1632 zdecode(s->keys,s->pcrc_32_tab,source[i]); 1633 1634 s->pfile_in_zip_read->pos_in_zipfile+=12; 1635 s->encrypted=1; 1636 } 1637 # endif 1638 1639 1640 return UNZ_OK; 1641 } 1642 1643 extern int ZEXPORT unzOpenCurrentFile (unzFile file) 1644 { 1645 return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL); 1646 } 1647 1648 extern int ZEXPORT unzOpenCurrentFilePassword (unzFile file, const char* password) 1649 { 1650 return unzOpenCurrentFile3(file, NULL, NULL, 0, password); 1651 } 1652 1653 extern int ZEXPORT unzOpenCurrentFile2 (unzFile file, int* method, int* level, int raw) 1654 { 1655 return unzOpenCurrentFile3(file, method, level, raw, NULL); 1656 } 1657 1658 /** Addition for GDAL : START */ 1659 1660 extern ZPOS64_T ZEXPORT unzGetCurrentFileZStreamPos64( unzFile file) 1661 { 1662 unz64_s* s; 1663 file_in_zip64_read_info_s* pfile_in_zip_read_info; 1664 s=(unz64_s*)file; 1665 if (file==NULL) 1666 return 0; //UNZ_PARAMERROR; 1667 pfile_in_zip_read_info=s->pfile_in_zip_read; 1668 if (pfile_in_zip_read_info==NULL) 1669 return 0; //UNZ_PARAMERROR; 1670 return pfile_in_zip_read_info->pos_in_zipfile + 1671 pfile_in_zip_read_info->byte_before_the_zipfile; 1672 } 1673 1674 /** Addition for GDAL : END */ 1675 1676 /* 1677 Read bytes from the current file. 1678 buf contain buffer where data must be copied 1679 len the size of buf. 1680 1681 return the number of byte copied if somes bytes are copied 1682 return 0 if the end of file was reached 1683 return <0 with error code if there is an error 1684 (UNZ_ERRNO for IO error, or zLib error for uncompress error) 1685 */ 1686 extern int ZEXPORT unzReadCurrentFile (unzFile file, voidp buf, unsigned len) 1687 { 1688 int err=UNZ_OK; 1689 uInt iRead = 0; 1690 unz64_s* s; 1691 file_in_zip64_read_info_s* pfile_in_zip_read_info; 1692 if (file==NULL) 1693 return UNZ_PARAMERROR; 1694 s=(unz64_s*)file; 1695 pfile_in_zip_read_info=s->pfile_in_zip_read; 1696 1697 if (pfile_in_zip_read_info==NULL) 1698 return UNZ_PARAMERROR; 1699 1700 1701 if (pfile_in_zip_read_info->read_buffer == NULL) 1702 return UNZ_END_OF_LIST_OF_FILE; 1703 if (len==0) 1704 return 0; 1705 1706 pfile_in_zip_read_info->stream.next_out = (Bytef*)buf; 1707 1708 pfile_in_zip_read_info->stream.avail_out = (uInt)len; 1709 1710 if ((len>pfile_in_zip_read_info->rest_read_uncompressed) && 1711 (!(pfile_in_zip_read_info->raw))) 1712 pfile_in_zip_read_info->stream.avail_out = 1713 (uInt)pfile_in_zip_read_info->rest_read_uncompressed; 1714 1715 if ((len>pfile_in_zip_read_info->rest_read_compressed+ 1716 pfile_in_zip_read_info->stream.avail_in) && 1717 (pfile_in_zip_read_info->raw)) 1718 pfile_in_zip_read_info->stream.avail_out = 1719 (uInt)pfile_in_zip_read_info->rest_read_compressed+ 1720 pfile_in_zip_read_info->stream.avail_in; 1721 1722 while (pfile_in_zip_read_info->stream.avail_out>0) 1723 { 1724 if ((pfile_in_zip_read_info->stream.avail_in==0) && 1725 (pfile_in_zip_read_info->rest_read_compressed>0)) 1726 { 1727 uInt uReadThis = UNZ_BUFSIZE; 1728 if (pfile_in_zip_read_info->rest_read_compressed<uReadThis) 1729 uReadThis = (uInt)pfile_in_zip_read_info->rest_read_compressed; 1730 if (uReadThis == 0) 1731 return UNZ_EOF; 1732 if (ZSEEK64(pfile_in_zip_read_info->z_filefunc, 1733 pfile_in_zip_read_info->filestream, 1734 pfile_in_zip_read_info->pos_in_zipfile + 1735 pfile_in_zip_read_info->byte_before_the_zipfile, 1736 ZLIB_FILEFUNC_SEEK_SET)!=0) 1737 return UNZ_ERRNO; 1738 if (ZREAD64(pfile_in_zip_read_info->z_filefunc, 1739 pfile_in_zip_read_info->filestream, 1740 pfile_in_zip_read_info->read_buffer, 1741 uReadThis)!=uReadThis) 1742 return UNZ_ERRNO; 1743 1744 1745 # ifndef NOUNCRYPT 1746 if(s->encrypted) 1747 { 1748 uInt i; 1749 for(i=0;i<uReadThis;i++) 1750 pfile_in_zip_read_info->read_buffer[i] = 1751 zdecode(s->keys,s->pcrc_32_tab, 1752 pfile_in_zip_read_info->read_buffer[i]); 1753 } 1754 # endif 1755 1756 1757 pfile_in_zip_read_info->pos_in_zipfile += uReadThis; 1758 1759 pfile_in_zip_read_info->rest_read_compressed-=uReadThis; 1760 1761 pfile_in_zip_read_info->stream.next_in = 1762 (Bytef*)pfile_in_zip_read_info->read_buffer; 1763 pfile_in_zip_read_info->stream.avail_in = (uInt)uReadThis; 1764 } 1765 1766 if ((pfile_in_zip_read_info->compression_method==0) || (pfile_in_zip_read_info->raw)) 1767 { 1768 uInt uDoCopy,i ; 1769 1770 if ((pfile_in_zip_read_info->stream.avail_in == 0) && 1771 (pfile_in_zip_read_info->rest_read_compressed == 0)) 1772 return (iRead==0) ? UNZ_EOF : (int)iRead; 1773 1774 if (pfile_in_zip_read_info->stream.avail_out < 1775 pfile_in_zip_read_info->stream.avail_in) 1776 uDoCopy = pfile_in_zip_read_info->stream.avail_out ; 1777 else 1778 uDoCopy = pfile_in_zip_read_info->stream.avail_in ; 1779 1780 for (i=0;i<uDoCopy;i++) 1781 *(pfile_in_zip_read_info->stream.next_out+i) = 1782 *(pfile_in_zip_read_info->stream.next_in+i); 1783 1784 pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uDoCopy; 1785 1786 pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32, 1787 pfile_in_zip_read_info->stream.next_out, 1788 uDoCopy); 1789 pfile_in_zip_read_info->rest_read_uncompressed-=uDoCopy; 1790 pfile_in_zip_read_info->stream.avail_in -= uDoCopy; 1791 pfile_in_zip_read_info->stream.avail_out -= uDoCopy; 1792 pfile_in_zip_read_info->stream.next_out += uDoCopy; 1793 pfile_in_zip_read_info->stream.next_in += uDoCopy; 1794 pfile_in_zip_read_info->stream.total_out += uDoCopy; 1795 iRead += uDoCopy; 1796 } 1797 else if (pfile_in_zip_read_info->compression_method==Z_BZIP2ED) 1798 { 1799 #ifdef HAVE_BZIP2 1800 uLong uTotalOutBefore,uTotalOutAfter; 1801 const Bytef *bufBefore; 1802 uLong uOutThis; 1803 1804 pfile_in_zip_read_info->bstream.next_in = (char*)pfile_in_zip_read_info->stream.next_in; 1805 pfile_in_zip_read_info->bstream.avail_in = pfile_in_zip_read_info->stream.avail_in; 1806 pfile_in_zip_read_info->bstream.total_in_lo32 = pfile_in_zip_read_info->stream.total_in; 1807 pfile_in_zip_read_info->bstream.total_in_hi32 = 0; 1808 pfile_in_zip_read_info->bstream.next_out = (char*)pfile_in_zip_read_info->stream.next_out; 1809 pfile_in_zip_read_info->bstream.avail_out = pfile_in_zip_read_info->stream.avail_out; 1810 pfile_in_zip_read_info->bstream.total_out_lo32 = pfile_in_zip_read_info->stream.total_out; 1811 pfile_in_zip_read_info->bstream.total_out_hi32 = 0; 1812 1813 uTotalOutBefore = pfile_in_zip_read_info->bstream.total_out_lo32; 1814 bufBefore = (const Bytef *)pfile_in_zip_read_info->bstream.next_out; 1815 1816 err=BZ2_bzDecompress(&pfile_in_zip_read_info->bstream); 1817 1818 uTotalOutAfter = pfile_in_zip_read_info->bstream.total_out_lo32; 1819 uOutThis = uTotalOutAfter-uTotalOutBefore; 1820 1821 pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis; 1822 1823 pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,bufBefore, (uInt)(uOutThis)); 1824 pfile_in_zip_read_info->rest_read_uncompressed -= uOutThis; 1825 iRead += (uInt)(uTotalOutAfter - uTotalOutBefore); 1826 1827 pfile_in_zip_read_info->stream.next_in = (Bytef*)pfile_in_zip_read_info->bstream.next_in; 1828 pfile_in_zip_read_info->stream.avail_in = pfile_in_zip_read_info->bstream.avail_in; 1829 pfile_in_zip_read_info->stream.total_in = pfile_in_zip_read_info->bstream.total_in_lo32; 1830 pfile_in_zip_read_info->stream.next_out = (Bytef*)pfile_in_zip_read_info->bstream.next_out; 1831 pfile_in_zip_read_info->stream.avail_out = pfile_in_zip_read_info->bstream.avail_out; 1832 pfile_in_zip_read_info->stream.total_out = pfile_in_zip_read_info->bstream.total_out_lo32; 1833 1834 if (err==BZ_STREAM_END) 1835 return (iRead==0) ? UNZ_EOF : iRead; 1836 if (err!=BZ_OK) 1837 break; 1838 #endif 1839 } // end Z_BZIP2ED 1840 else 1841 { 1842 ZPOS64_T uTotalOutBefore,uTotalOutAfter; 1843 const Bytef *bufBefore; 1844 ZPOS64_T uOutThis; 1845 int flush=Z_SYNC_FLUSH; 1846 1847 uTotalOutBefore = pfile_in_zip_read_info->stream.total_out; 1848 bufBefore = pfile_in_zip_read_info->stream.next_out; 1849 1850 /* 1851 if ((pfile_in_zip_read_info->rest_read_uncompressed == 1852 pfile_in_zip_read_info->stream.avail_out) && 1853 (pfile_in_zip_read_info->rest_read_compressed == 0)) 1854 flush = Z_FINISH; 1855 */ 1856 err=inflate(&pfile_in_zip_read_info->stream,flush); 1857 1858 if ((err>=0) && (pfile_in_zip_read_info->stream.msg!=NULL)) 1859 err = Z_DATA_ERROR; 1860 1861 uTotalOutAfter = pfile_in_zip_read_info->stream.total_out; 1862 /* Detect overflow, because z_stream.total_out is uLong (32 bits) */ 1863 if (uTotalOutAfter<uTotalOutBefore) 1864 uTotalOutAfter += 1LL << 32; /* Add maximum value of uLong + 1 */ 1865 uOutThis = uTotalOutAfter-uTotalOutBefore; 1866 1867 pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis; 1868 1869 pfile_in_zip_read_info->crc32 = 1870 crc32(pfile_in_zip_read_info->crc32,bufBefore, 1871 (uInt)(uOutThis)); 1872 1873 pfile_in_zip_read_info->rest_read_uncompressed -= 1874 uOutThis; 1875 1876 iRead += (uInt)(uTotalOutAfter - uTotalOutBefore); 1877 1878 if (err==Z_STREAM_END) 1879 return (iRead==0) ? UNZ_EOF : (int)iRead; 1880 if (err!=Z_OK) 1881 break; 1882 } 1883 } 1884 1885 if (err==Z_OK) 1886 return (int)iRead; 1887 return err; 1888 } 1889 1890 1891 /* 1892 Give the current position in uncompressed data 1893 */ 1894 extern z_off_t ZEXPORT unztell (unzFile file) 1895 { 1896 unz64_s* s; 1897 file_in_zip64_read_info_s* pfile_in_zip_read_info; 1898 if (file==NULL) 1899 return UNZ_PARAMERROR; 1900 s=(unz64_s*)file; 1901 pfile_in_zip_read_info=s->pfile_in_zip_read; 1902 1903 if (pfile_in_zip_read_info==NULL) 1904 return UNZ_PARAMERROR; 1905 1906 return (z_off_t)pfile_in_zip_read_info->stream.total_out; 1907 } 1908 1909 extern ZPOS64_T ZEXPORT unztell64 (unzFile file) 1910 { 1911 1912 unz64_s* s; 1913 file_in_zip64_read_info_s* pfile_in_zip_read_info; 1914 if (file==NULL) 1915 return (ZPOS64_T)-1; 1916 s=(unz64_s*)file; 1917 pfile_in_zip_read_info=s->pfile_in_zip_read; 1918 1919 if (pfile_in_zip_read_info==NULL) 1920 return (ZPOS64_T)-1; 1921 1922 return pfile_in_zip_read_info->total_out_64; 1923 } 1924 1925 1926 /* 1927 return 1 if the end of file was reached, 0 elsewhere 1928 */ 1929 extern int ZEXPORT unzeof (unzFile file) 1930 { 1931 unz64_s* s; 1932 file_in_zip64_read_info_s* pfile_in_zip_read_info; 1933 if (file==NULL) 1934 return UNZ_PARAMERROR; 1935 s=(unz64_s*)file; 1936 pfile_in_zip_read_info=s->pfile_in_zip_read; 1937 1938 if (pfile_in_zip_read_info==NULL) 1939 return UNZ_PARAMERROR; 1940 1941 if (pfile_in_zip_read_info->rest_read_uncompressed == 0) 1942 return 1; 1943 else 1944 return 0; 1945 } 1946 1947 1948 1949 /* 1950 Read extra field from the current file (opened by unzOpenCurrentFile) 1951 This is the local-header version of the extra field (sometimes, there is 1952 more info in the local-header version than in the central-header) 1953 1954 if buf==NULL, it return the size of the local extra field that can be read 1955 1956 if buf!=NULL, len is the size of the buffer, the extra header is copied in 1957 buf. 1958 the return value is the number of bytes copied in buf, or (if <0) 1959 the error code 1960 */ 1961 extern int ZEXPORT unzGetLocalExtrafield (unzFile file, voidp buf, unsigned len) 1962 { 1963 unz64_s* s; 1964 file_in_zip64_read_info_s* pfile_in_zip_read_info; 1965 uInt read_now; 1966 ZPOS64_T size_to_read; 1967 1968 if (file==NULL) 1969 return UNZ_PARAMERROR; 1970 s=(unz64_s*)file; 1971 pfile_in_zip_read_info=s->pfile_in_zip_read; 1972 1973 if (pfile_in_zip_read_info==NULL) 1974 return UNZ_PARAMERROR; 1975 1976 size_to_read = (pfile_in_zip_read_info->size_local_extrafield - 1977 pfile_in_zip_read_info->pos_local_extrafield); 1978 1979 if (buf==NULL) 1980 return (int)size_to_read; 1981 1982 if (len>size_to_read) 1983 read_now = (uInt)size_to_read; 1984 else 1985 read_now = (uInt)len ; 1986 1987 if (read_now==0) 1988 return 0; 1989 1990 if (ZSEEK64(pfile_in_zip_read_info->z_filefunc, 1991 pfile_in_zip_read_info->filestream, 1992 pfile_in_zip_read_info->offset_local_extrafield + 1993 pfile_in_zip_read_info->pos_local_extrafield, 1994 ZLIB_FILEFUNC_SEEK_SET)!=0) 1995 return UNZ_ERRNO; 1996 1997 if (ZREAD64(pfile_in_zip_read_info->z_filefunc, 1998 pfile_in_zip_read_info->filestream, 1999 buf,read_now)!=read_now) 2000 return UNZ_ERRNO; 2001 2002 return (int)read_now; 2003 } 2004 2005 /* 2006 Close the file in zip opened with unzOpenCurrentFile 2007 Return UNZ_CRCERROR if all the file was read but the CRC is not good 2008 */ 2009 extern int ZEXPORT unzCloseCurrentFile (unzFile file) 2010 { 2011 int err=UNZ_OK; 2012 2013 unz64_s* s; 2014 file_in_zip64_read_info_s* pfile_in_zip_read_info; 2015 if (file==NULL) 2016 return UNZ_PARAMERROR; 2017 s=(unz64_s*)file; 2018 pfile_in_zip_read_info=s->pfile_in_zip_read; 2019 2020 if (pfile_in_zip_read_info==NULL) 2021 return UNZ_PARAMERROR; 2022 2023 2024 if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) && 2025 (!pfile_in_zip_read_info->raw)) 2026 { 2027 if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait) 2028 err=UNZ_CRCERROR; 2029 } 2030 2031 2032 TRYFREE(pfile_in_zip_read_info->read_buffer); 2033 pfile_in_zip_read_info->read_buffer = NULL; 2034 if (pfile_in_zip_read_info->stream_initialised == Z_DEFLATED) 2035 inflateEnd(&pfile_in_zip_read_info->stream); 2036 #ifdef HAVE_BZIP2 2037 else if (pfile_in_zip_read_info->stream_initialised == Z_BZIP2ED) 2038 BZ2_bzDecompressEnd(&pfile_in_zip_read_info->bstream); 2039 #endif 2040 2041 2042 pfile_in_zip_read_info->stream_initialised = 0; 2043 TRYFREE(pfile_in_zip_read_info); 2044 2045 s->pfile_in_zip_read=NULL; 2046 2047 return err; 2048 } 2049 2050 2051 /* 2052 Get the global comment string of the ZipFile, in the szComment buffer. 2053 uSizeBuf is the size of the szComment buffer. 2054 return the number of byte copied or an error code <0 2055 */ 2056 extern int ZEXPORT unzGetGlobalComment (unzFile file, char * szComment, uLong uSizeBuf) 2057 { 2058 unz64_s* s; 2059 uLong uReadThis ; 2060 if (file==NULL) 2061 return (int)UNZ_PARAMERROR; 2062 s=(unz64_s*)file; 2063 2064 uReadThis = uSizeBuf; 2065 if (uReadThis>s->gi.size_comment) 2066 uReadThis = s->gi.size_comment; 2067 2068 if (ZSEEK64(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0) 2069 return UNZ_ERRNO; 2070 2071 if (uReadThis>0) 2072 { 2073 *szComment='\0'; 2074 if (ZREAD64(s->z_filefunc,s->filestream,szComment,uReadThis)!=uReadThis) 2075 return UNZ_ERRNO; 2076 } 2077 2078 if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment)) 2079 *(szComment+s->gi.size_comment)='\0'; 2080 return (int)uReadThis; 2081 } 2082 2083 /* Additions by RX '2004 */ 2084 extern ZPOS64_T ZEXPORT unzGetOffset64(unzFile file) 2085 { 2086 unz64_s* s; 2087 2088 if (file==NULL) 2089 return 0; //UNZ_PARAMERROR; 2090 s=(unz64_s*)file; 2091 if (!s->current_file_ok) 2092 return 0; 2093 if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff) 2094 if (s->num_file==s->gi.number_entry) 2095 return 0; 2096 return s->pos_in_central_dir; 2097 } 2098 2099 extern uLong ZEXPORT unzGetOffset (unzFile file) 2100 { 2101 ZPOS64_T offset64; 2102 2103 if (file==NULL) 2104 return 0; //UNZ_PARAMERROR; 2105 offset64 = unzGetOffset64(file); 2106 return (uLong)offset64; 2107 } 2108 2109 extern int ZEXPORT unzSetOffset64(unzFile file, ZPOS64_T pos) 2110 { 2111 unz64_s* s; 2112 int err; 2113 2114 if (file==NULL) 2115 return UNZ_PARAMERROR; 2116 s=(unz64_s*)file; 2117 2118 s->pos_in_central_dir = pos; 2119 s->num_file = s->gi.number_entry; /* hack */ 2120 err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, 2121 &s->cur_file_info_internal, 2122 NULL,0,NULL,0,NULL,0); 2123 s->current_file_ok = (err == UNZ_OK); 2124 return err; 2125 } 2126 2127 extern int ZEXPORT unzSetOffset (unzFile file, uLong pos) 2128 { 2129 return unzSetOffset64(file,pos); 2130 } 2131