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5ca28f79 L |
1 | /* unzip.c -- IO for uncompress .zip files using zlib |
2 | Version 1.1, February 14h, 2010 | |
3 | part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) | |
4 | ||
5 | Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) | |
6 | ||
7 | Modifications of Unzip for Zip64 | |
8 | Copyright (C) 2007-2008 Even Rouault | |
9 | ||
10 | Modifications for Zip64 support on both zip and unzip | |
11 | Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) | |
12 | ||
13 | For more info read MiniZip_info.txt | |
14 | ||
15 | ||
16 | ------------------------------------------------------------------------------------ | |
17 | Decryption code comes from crypt.c by Info-ZIP but has been greatly reduced in terms of | |
18 | compatibility with older software. The following is from the original crypt.c. | |
19 | Code woven in by Terry Thorsen 1/2003. | |
20 | ||
21 | Copyright (c) 1990-2000 Info-ZIP. All rights reserved. | |
22 | ||
23 | See the accompanying file LICENSE, version 2000-Apr-09 or later | |
24 | (the contents of which are also included in zip.h) for terms of use. | |
25 | If, for some reason, all these files are missing, the Info-ZIP license | |
26 | also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html | |
27 | ||
28 | crypt.c (full version) by Info-ZIP. Last revised: [see crypt.h] | |
29 | ||
30 | The encryption/decryption parts of this source code (as opposed to the | |
31 | non-echoing password parts) were originally written in Europe. The | |
32 | whole source package can be freely distributed, including from the USA. | |
33 | (Prior to January 2000, re-export from the US was a violation of US law.) | |
34 | ||
35 | This encryption code is a direct transcription of the algorithm from | |
36 | Roger Schlafly, described by Phil Katz in the file appnote.txt. This | |
37 | file (appnote.txt) is distributed with the PKZIP program (even in the | |
38 | version without encryption capabilities). | |
39 | ||
40 | ------------------------------------------------------------------------------------ | |
41 | ||
42 | Changes in unzip.c | |
43 | ||
44 | 2007-2008 - Even Rouault - Addition of cpl_unzGetCurrentFileZStreamPos | |
45 | 2007-2008 - Even Rouault - Decoration of symbol names unz* -> cpl_unz* | |
46 | 2007-2008 - Even Rouault - Remove old C style function prototypes | |
47 | 2007-2008 - Even Rouault - Add unzip support for ZIP64 | |
48 | ||
49 | Copyright (C) 2007-2008 Even Rouault | |
50 | ||
51 | ||
52 | Oct-2009 - Mathias Svensson - Removed cpl_* from symbol names (Even Rouault added them but since this is now moved to a new project (minizip64) I renamed them again). | |
53 | Oct-2009 - Mathias Svensson - Fixed problem if uncompressed size was > 4G and compressed size was <4G | |
54 | should only read the compressed/uncompressed size from the Zip64 format if | |
55 | the size from normal header was 0xFFFFFFFF | |
56 | Oct-2009 - Mathias Svensson - Applied some bug fixes from paches recived from Gilles Vollant | |
57 | Oct-2009 - Mathias Svensson - Applied support to unzip files with compression mathod BZIP2 (bzip2 lib is required) | |
58 | Patch created by Daniel Borca | |
59 | ||
60 | Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer | |
61 | ||
62 | Copyright (C) 1998 - 2010 Gilles Vollant, Even Rouault, Mathias Svensson | |
63 | ||
64 | */ | |
65 | ||
66 | ||
67 | #include <stdio.h> | |
68 | #include <stdlib.h> | |
69 | #include <string.h> | |
70 | ||
71 | #ifndef NOUNCRYPT | |
72 | #define NOUNCRYPT | |
73 | #endif | |
74 | ||
75 | #include "zlib.h" | |
76 | #include "unzip.h" | |
77 | ||
78 | #ifdef STDC | |
79 | # include <stddef.h> | |
80 | # include <string.h> | |
81 | # include <stdlib.h> | |
82 | #endif | |
83 | #ifdef NO_ERRNO_H | |
84 | extern int errno; | |
85 | #else | |
86 | # include <errno.h> | |
87 | #endif | |
88 | ||
89 | ||
90 | #ifndef local | |
91 | # define local static | |
92 | #endif | |
93 | /* compile with -Dlocal if your debugger can't find static symbols */ | |
94 | ||
95 | ||
96 | #ifndef CASESENSITIVITYDEFAULT_NO | |
97 | # if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES) | |
98 | # define CASESENSITIVITYDEFAULT_NO | |
99 | # endif | |
100 | #endif | |
101 | ||
102 | ||
103 | #ifndef UNZ_BUFSIZE | |
104 | #define UNZ_BUFSIZE (16384) | |
105 | #endif | |
106 | ||
107 | #ifndef UNZ_MAXFILENAMEINZIP | |
108 | #define UNZ_MAXFILENAMEINZIP (256) | |
109 | #endif | |
110 | ||
111 | #ifndef ALLOC | |
112 | # define ALLOC(size) (malloc(size)) | |
113 | #endif | |
114 | #ifndef TRYFREE | |
115 | # define TRYFREE(p) {if (p) free(p);} | |
116 | #endif | |
117 | ||
118 | #define SIZECENTRALDIRITEM (0x2e) | |
119 | #define SIZEZIPLOCALHEADER (0x1e) | |
120 | ||
121 | ||
122 | const char unz_copyright[] = | |
123 | " unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll"; | |
124 | ||
125 | /* unz_file_info_interntal contain internal info about a file in zipfile*/ | |
126 | typedef struct unz_file_info64_internal_s | |
127 | { | |
128 | ZPOS64_T offset_curfile;/* relative offset of local header 8 bytes */ | |
129 | } unz_file_info64_internal; | |
130 | ||
131 | ||
132 | /* file_in_zip_read_info_s contain internal information about a file in zipfile, | |
133 | when reading and decompress it */ | |
134 | typedef struct | |
135 | { | |
136 | char *read_buffer; /* internal buffer for compressed data */ | |
137 | z_stream stream; /* zLib stream structure for inflate */ | |
138 | ||
139 | #ifdef HAVE_BZIP2 | |
140 | bz_stream bstream; /* bzLib stream structure for bziped */ | |
141 | #endif | |
142 | ||
143 | ZPOS64_T pos_in_zipfile; /* position in byte on the zipfile, for fseek*/ | |
144 | uLong stream_initialised; /* flag set if stream structure is initialised*/ | |
145 | ||
146 | ZPOS64_T offset_local_extrafield;/* offset of the local extra field */ | |
147 | uInt size_local_extrafield;/* size of the local extra field */ | |
148 | ZPOS64_T pos_local_extrafield; /* position in the local extra field in read*/ | |
149 | ZPOS64_T total_out_64; | |
150 | ||
151 | uLong crc32; /* crc32 of all data uncompressed */ | |
152 | uLong crc32_wait; /* crc32 we must obtain after decompress all */ | |
153 | ZPOS64_T rest_read_compressed; /* number of byte to be decompressed */ | |
154 | ZPOS64_T rest_read_uncompressed;/*number of byte to be obtained after decomp*/ | |
155 | zlib_filefunc64_32_def z_filefunc; | |
156 | voidpf filestream; /* io structore of the zipfile */ | |
157 | uLong compression_method; /* compression method (0==store) */ | |
158 | ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ | |
159 | int raw; | |
160 | } file_in_zip64_read_info_s; | |
161 | ||
162 | ||
163 | /* unz64_s contain internal information about the zipfile | |
164 | */ | |
165 | typedef struct | |
166 | { | |
167 | zlib_filefunc64_32_def z_filefunc; | |
168 | int is64bitOpenFunction; | |
169 | voidpf filestream; /* io structore of the zipfile */ | |
170 | unz_global_info64 gi; /* public global information */ | |
171 | ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ | |
172 | ZPOS64_T num_file; /* number of the current file in the zipfile*/ | |
173 | ZPOS64_T pos_in_central_dir; /* pos of the current file in the central dir*/ | |
174 | ZPOS64_T current_file_ok; /* flag about the usability of the current file*/ | |
175 | ZPOS64_T central_pos; /* position of the beginning of the central dir*/ | |
176 | ||
177 | ZPOS64_T size_central_dir; /* size of the central directory */ | |
178 | ZPOS64_T offset_central_dir; /* offset of start of central directory with | |
179 | respect to the starting disk number */ | |
180 | ||
181 | unz_file_info64 cur_file_info; /* public info about the current file in zip*/ | |
182 | unz_file_info64_internal cur_file_info_internal; /* private info about it*/ | |
183 | file_in_zip64_read_info_s* pfile_in_zip_read; /* structure about the current | |
184 | file if we are decompressing it */ | |
185 | int encrypted; | |
186 | ||
187 | int isZip64; | |
188 | ||
189 | # ifndef NOUNCRYPT | |
190 | unsigned long keys[3]; /* keys defining the pseudo-random sequence */ | |
da09a436 | 191 | const z_crc_t* pcrc_32_tab; |
5ca28f79 L |
192 | # endif |
193 | } unz64_s; | |
194 | ||
195 | ||
196 | #ifndef NOUNCRYPT | |
197 | #include "crypt.h" | |
198 | #endif | |
199 | ||
200 | /* =========================================================================== | |
201 | Read a byte from a gz_stream; update next_in and avail_in. Return EOF | |
202 | for end of file. | |
203 | IN assertion: the stream s has been sucessfully opened for reading. | |
204 | */ | |
205 | ||
206 | ||
207 | local int unz64local_getByte OF(( | |
208 | const zlib_filefunc64_32_def* pzlib_filefunc_def, | |
209 | voidpf filestream, | |
210 | int *pi)); | |
211 | ||
212 | local int unz64local_getByte(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, int *pi) | |
213 | { | |
214 | unsigned char c; | |
215 | int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,&c,1); | |
216 | if (err==1) | |
217 | { | |
218 | *pi = (int)c; | |
219 | return UNZ_OK; | |
220 | } | |
221 | else | |
222 | { | |
223 | if (ZERROR64(*pzlib_filefunc_def,filestream)) | |
224 | return UNZ_ERRNO; | |
225 | else | |
226 | return UNZ_EOF; | |
227 | } | |
228 | } | |
229 | ||
230 | ||
231 | /* =========================================================================== | |
232 | Reads a long in LSB order from the given gz_stream. Sets | |
233 | */ | |
234 | local int unz64local_getShort OF(( | |
235 | const zlib_filefunc64_32_def* pzlib_filefunc_def, | |
236 | voidpf filestream, | |
237 | uLong *pX)); | |
238 | ||
239 | local int unz64local_getShort (const zlib_filefunc64_32_def* pzlib_filefunc_def, | |
240 | voidpf filestream, | |
241 | uLong *pX) | |
242 | { | |
243 | uLong x ; | |
244 | int i = 0; | |
245 | int err; | |
246 | ||
247 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
248 | x = (uLong)i; | |
249 | ||
250 | if (err==UNZ_OK) | |
251 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
252 | x |= ((uLong)i)<<8; | |
253 | ||
254 | if (err==UNZ_OK) | |
255 | *pX = x; | |
256 | else | |
257 | *pX = 0; | |
258 | return err; | |
259 | } | |
260 | ||
261 | local int unz64local_getLong OF(( | |
262 | const zlib_filefunc64_32_def* pzlib_filefunc_def, | |
263 | voidpf filestream, | |
264 | uLong *pX)); | |
265 | ||
266 | local int unz64local_getLong (const zlib_filefunc64_32_def* pzlib_filefunc_def, | |
267 | voidpf filestream, | |
268 | uLong *pX) | |
269 | { | |
270 | uLong x ; | |
271 | int i = 0; | |
272 | int err; | |
273 | ||
274 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
275 | x = (uLong)i; | |
276 | ||
277 | if (err==UNZ_OK) | |
278 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
279 | x |= ((uLong)i)<<8; | |
280 | ||
281 | if (err==UNZ_OK) | |
282 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
283 | x |= ((uLong)i)<<16; | |
284 | ||
285 | if (err==UNZ_OK) | |
286 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
287 | x += ((uLong)i)<<24; | |
288 | ||
289 | if (err==UNZ_OK) | |
290 | *pX = x; | |
291 | else | |
292 | *pX = 0; | |
293 | return err; | |
294 | } | |
295 | ||
296 | local int unz64local_getLong64 OF(( | |
297 | const zlib_filefunc64_32_def* pzlib_filefunc_def, | |
298 | voidpf filestream, | |
299 | ZPOS64_T *pX)); | |
300 | ||
301 | ||
302 | local int unz64local_getLong64 (const zlib_filefunc64_32_def* pzlib_filefunc_def, | |
303 | voidpf filestream, | |
304 | ZPOS64_T *pX) | |
305 | { | |
306 | ZPOS64_T x ; | |
307 | int i = 0; | |
308 | int err; | |
309 | ||
310 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
311 | x = (ZPOS64_T)i; | |
312 | ||
313 | if (err==UNZ_OK) | |
314 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
315 | x |= ((ZPOS64_T)i)<<8; | |
316 | ||
317 | if (err==UNZ_OK) | |
318 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
319 | x |= ((ZPOS64_T)i)<<16; | |
320 | ||
321 | if (err==UNZ_OK) | |
322 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
323 | x |= ((ZPOS64_T)i)<<24; | |
324 | ||
325 | if (err==UNZ_OK) | |
326 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
327 | x |= ((ZPOS64_T)i)<<32; | |
328 | ||
329 | if (err==UNZ_OK) | |
330 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
331 | x |= ((ZPOS64_T)i)<<40; | |
332 | ||
333 | if (err==UNZ_OK) | |
334 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
335 | x |= ((ZPOS64_T)i)<<48; | |
336 | ||
337 | if (err==UNZ_OK) | |
338 | err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); | |
339 | x |= ((ZPOS64_T)i)<<56; | |
340 | ||
341 | if (err==UNZ_OK) | |
342 | *pX = x; | |
343 | else | |
344 | *pX = 0; | |
345 | return err; | |
346 | } | |
347 | ||
348 | /* My own strcmpi / strcasecmp */ | |
349 | local int strcmpcasenosensitive_internal (const char* fileName1, const char* fileName2) | |
350 | { | |
351 | for (;;) | |
352 | { | |
353 | char c1=*(fileName1++); | |
354 | char c2=*(fileName2++); | |
355 | if ((c1>='a') && (c1<='z')) | |
356 | c1 -= 0x20; | |
357 | if ((c2>='a') && (c2<='z')) | |
358 | c2 -= 0x20; | |
359 | if (c1=='\0') | |
360 | return ((c2=='\0') ? 0 : -1); | |
361 | if (c2=='\0') | |
362 | return 1; | |
363 | if (c1<c2) | |
364 | return -1; | |
365 | if (c1>c2) | |
366 | return 1; | |
367 | } | |
368 | } | |
369 | ||
370 | ||
371 | #ifdef CASESENSITIVITYDEFAULT_NO | |
372 | #define CASESENSITIVITYDEFAULTVALUE 2 | |
373 | #else | |
374 | #define CASESENSITIVITYDEFAULTVALUE 1 | |
375 | #endif | |
376 | ||
377 | #ifndef STRCMPCASENOSENTIVEFUNCTION | |
378 | #define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal | |
379 | #endif | |
380 | ||
381 | /* | |
382 | Compare two filename (fileName1,fileName2). | |
383 | If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp) | |
384 | If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi | |
385 | or strcasecmp) | |
386 | If iCaseSenisivity = 0, case sensitivity is defaut of your operating system | |
387 | (like 1 on Unix, 2 on Windows) | |
388 | ||
389 | */ | |
390 | extern int ZEXPORT unzStringFileNameCompare (const char* fileName1, | |
391 | const char* fileName2, | |
392 | int iCaseSensitivity) | |
393 | ||
394 | { | |
395 | if (iCaseSensitivity==0) | |
396 | iCaseSensitivity=CASESENSITIVITYDEFAULTVALUE; | |
397 | ||
398 | if (iCaseSensitivity==1) | |
399 | return strcmp(fileName1,fileName2); | |
400 | ||
401 | return STRCMPCASENOSENTIVEFUNCTION(fileName1,fileName2); | |
402 | } | |
403 | ||
404 | #ifndef BUFREADCOMMENT | |
405 | #define BUFREADCOMMENT (0x400) | |
406 | #endif | |
407 | ||
408 | /* | |
409 | Locate the Central directory of a zipfile (at the end, just before | |
410 | the global comment) | |
411 | */ | |
412 | local ZPOS64_T unz64local_SearchCentralDir OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream)); | |
413 | local ZPOS64_T unz64local_SearchCentralDir(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) | |
414 | { | |
415 | unsigned char* buf; | |
416 | ZPOS64_T uSizeFile; | |
417 | ZPOS64_T uBackRead; | |
418 | ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ | |
419 | ZPOS64_T uPosFound=0; | |
420 | ||
421 | if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) | |
422 | return 0; | |
423 | ||
424 | ||
425 | uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); | |
426 | ||
427 | if (uMaxBack>uSizeFile) | |
428 | uMaxBack = uSizeFile; | |
429 | ||
430 | buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); | |
431 | if (buf==NULL) | |
432 | return 0; | |
433 | ||
434 | uBackRead = 4; | |
435 | while (uBackRead<uMaxBack) | |
436 | { | |
437 | uLong uReadSize; | |
438 | ZPOS64_T uReadPos ; | |
439 | int i; | |
440 | if (uBackRead+BUFREADCOMMENT>uMaxBack) | |
441 | uBackRead = uMaxBack; | |
442 | else | |
443 | uBackRead+=BUFREADCOMMENT; | |
444 | uReadPos = uSizeFile-uBackRead ; | |
445 | ||
446 | uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? | |
447 | (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); | |
448 | if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0) | |
449 | break; | |
450 | ||
451 | if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) | |
452 | break; | |
453 | ||
454 | for (i=(int)uReadSize-3; (i--)>0;) | |
455 | if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && | |
456 | ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06)) | |
457 | { | |
458 | uPosFound = uReadPos+i; | |
459 | break; | |
460 | } | |
461 | ||
462 | if (uPosFound!=0) | |
463 | break; | |
464 | } | |
465 | TRYFREE(buf); | |
466 | return uPosFound; | |
467 | } | |
468 | ||
469 | ||
470 | /* | |
471 | Locate the Central directory 64 of a zipfile (at the end, just before | |
472 | the global comment) | |
473 | */ | |
474 | local ZPOS64_T unz64local_SearchCentralDir64 OF(( | |
475 | const zlib_filefunc64_32_def* pzlib_filefunc_def, | |
476 | voidpf filestream)); | |
477 | ||
478 | local ZPOS64_T unz64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def, | |
479 | voidpf filestream) | |
480 | { | |
481 | unsigned char* buf; | |
482 | ZPOS64_T uSizeFile; | |
483 | ZPOS64_T uBackRead; | |
484 | ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ | |
485 | ZPOS64_T uPosFound=0; | |
486 | uLong uL; | |
487 | ZPOS64_T relativeOffset; | |
488 | ||
489 | if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) | |
490 | return 0; | |
491 | ||
492 | ||
493 | uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); | |
494 | ||
495 | if (uMaxBack>uSizeFile) | |
496 | uMaxBack = uSizeFile; | |
497 | ||
498 | buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); | |
499 | if (buf==NULL) | |
500 | return 0; | |
501 | ||
502 | uBackRead = 4; | |
503 | while (uBackRead<uMaxBack) | |
504 | { | |
505 | uLong uReadSize; | |
506 | ZPOS64_T uReadPos; | |
507 | int i; | |
508 | if (uBackRead+BUFREADCOMMENT>uMaxBack) | |
509 | uBackRead = uMaxBack; | |
510 | else | |
511 | uBackRead+=BUFREADCOMMENT; | |
512 | uReadPos = uSizeFile-uBackRead ; | |
513 | ||
514 | uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? | |
515 | (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); | |
516 | if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0) | |
517 | break; | |
518 | ||
519 | if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) | |
520 | break; | |
521 | ||
522 | for (i=(int)uReadSize-3; (i--)>0;) | |
523 | if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && | |
524 | ((*(buf+i+2))==0x06) && ((*(buf+i+3))==0x07)) | |
525 | { | |
526 | uPosFound = uReadPos+i; | |
527 | break; | |
528 | } | |
529 | ||
530 | if (uPosFound!=0) | |
531 | break; | |
532 | } | |
533 | TRYFREE(buf); | |
534 | if (uPosFound == 0) | |
535 | return 0; | |
536 | ||
537 | /* Zip64 end of central directory locator */ | |
538 | if (ZSEEK64(*pzlib_filefunc_def,filestream, uPosFound,ZLIB_FILEFUNC_SEEK_SET)!=0) | |
539 | return 0; | |
540 | ||
541 | /* the signature, already checked */ | |
542 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) | |
543 | return 0; | |
544 | ||
545 | /* number of the disk with the start of the zip64 end of central directory */ | |
546 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) | |
547 | return 0; | |
548 | if (uL != 0) | |
549 | return 0; | |
550 | ||
551 | /* relative offset of the zip64 end of central directory record */ | |
552 | if (unz64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=UNZ_OK) | |
553 | return 0; | |
554 | ||
555 | /* total number of disks */ | |
556 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) | |
557 | return 0; | |
558 | if (uL != 1) | |
559 | return 0; | |
560 | ||
561 | /* Goto end of central directory record */ | |
562 | if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_SET)!=0) | |
563 | return 0; | |
564 | ||
565 | /* the signature */ | |
566 | if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) | |
567 | return 0; | |
568 | ||
569 | if (uL != 0x06064b50) | |
570 | return 0; | |
571 | ||
572 | return relativeOffset; | |
573 | } | |
574 | ||
575 | /* | |
576 | Open a Zip file. path contain the full pathname (by example, | |
577 | on a Windows NT computer "c:\\test\\zlib114.zip" or on an Unix computer | |
578 | "zlib/zlib114.zip". | |
579 | If the zipfile cannot be opened (file doesn't exist or in not valid), the | |
580 | return value is NULL. | |
581 | Else, the return value is a unzFile Handle, usable with other function | |
582 | of this unzip package. | |
583 | */ | |
584 | local unzFile unzOpenInternal (const void *path, | |
585 | zlib_filefunc64_32_def* pzlib_filefunc64_32_def, | |
586 | int is64bitOpenFunction) | |
587 | { | |
588 | unz64_s us; | |
589 | unz64_s *s; | |
590 | ZPOS64_T central_pos; | |
591 | uLong uL; | |
592 | ||
593 | uLong number_disk; /* number of the current dist, used for | |
594 | spaning ZIP, unsupported, always 0*/ | |
595 | uLong number_disk_with_CD; /* number the the disk with central dir, used | |
596 | for spaning ZIP, unsupported, always 0*/ | |
597 | ZPOS64_T number_entry_CD; /* total number of entries in | |
598 | the central dir | |
599 | (same than number_entry on nospan) */ | |
600 | ||
601 | int err=UNZ_OK; | |
602 | ||
603 | if (unz_copyright[0]!=' ') | |
604 | return NULL; | |
605 | ||
606 | us.z_filefunc.zseek32_file = NULL; | |
607 | us.z_filefunc.ztell32_file = NULL; | |
608 | if (pzlib_filefunc64_32_def==NULL) | |
609 | fill_fopen64_filefunc(&us.z_filefunc.zfile_func64); | |
610 | else | |
611 | us.z_filefunc = *pzlib_filefunc64_32_def; | |
612 | us.is64bitOpenFunction = is64bitOpenFunction; | |
613 | ||
614 | ||
615 | ||
616 | us.filestream = ZOPEN64(us.z_filefunc, | |
617 | path, | |
618 | ZLIB_FILEFUNC_MODE_READ | | |
619 | ZLIB_FILEFUNC_MODE_EXISTING); | |
620 | if (us.filestream==NULL) | |
621 | return NULL; | |
622 | ||
623 | central_pos = unz64local_SearchCentralDir64(&us.z_filefunc,us.filestream); | |
624 | if (central_pos) | |
625 | { | |
626 | uLong uS; | |
627 | ZPOS64_T uL64; | |
628 | ||
629 | us.isZip64 = 1; | |
630 | ||
631 | if (ZSEEK64(us.z_filefunc, us.filestream, | |
632 | central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0) | |
633 | err=UNZ_ERRNO; | |
634 | ||
635 | /* the signature, already checked */ | |
636 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) | |
637 | err=UNZ_ERRNO; | |
638 | ||
639 | /* size of zip64 end of central directory record */ | |
640 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&uL64)!=UNZ_OK) | |
641 | err=UNZ_ERRNO; | |
642 | ||
643 | /* version made by */ | |
644 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK) | |
645 | err=UNZ_ERRNO; | |
646 | ||
647 | /* version needed to extract */ | |
648 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK) | |
649 | err=UNZ_ERRNO; | |
650 | ||
651 | /* number of this disk */ | |
652 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK) | |
653 | err=UNZ_ERRNO; | |
654 | ||
655 | /* number of the disk with the start of the central directory */ | |
656 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK) | |
657 | err=UNZ_ERRNO; | |
658 | ||
659 | /* total number of entries in the central directory on this disk */ | |
660 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK) | |
661 | err=UNZ_ERRNO; | |
662 | ||
663 | /* total number of entries in the central directory */ | |
664 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&number_entry_CD)!=UNZ_OK) | |
665 | err=UNZ_ERRNO; | |
666 | ||
667 | if ((number_entry_CD!=us.gi.number_entry) || | |
668 | (number_disk_with_CD!=0) || | |
669 | (number_disk!=0)) | |
670 | err=UNZ_BADZIPFILE; | |
671 | ||
672 | /* size of the central directory */ | |
673 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.size_central_dir)!=UNZ_OK) | |
674 | err=UNZ_ERRNO; | |
675 | ||
676 | /* offset of start of central directory with respect to the | |
677 | starting disk number */ | |
678 | if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK) | |
679 | err=UNZ_ERRNO; | |
680 | ||
681 | us.gi.size_comment = 0; | |
682 | } | |
683 | else | |
684 | { | |
685 | central_pos = unz64local_SearchCentralDir(&us.z_filefunc,us.filestream); | |
686 | if (central_pos==0) | |
687 | err=UNZ_ERRNO; | |
688 | ||
689 | us.isZip64 = 0; | |
690 | ||
691 | if (ZSEEK64(us.z_filefunc, us.filestream, | |
692 | central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0) | |
693 | err=UNZ_ERRNO; | |
694 | ||
695 | /* the signature, already checked */ | |
696 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) | |
697 | err=UNZ_ERRNO; | |
698 | ||
699 | /* number of this disk */ | |
700 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK) | |
701 | err=UNZ_ERRNO; | |
702 | ||
703 | /* number of the disk with the start of the central directory */ | |
704 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK) | |
705 | err=UNZ_ERRNO; | |
706 | ||
707 | /* total number of entries in the central dir on this disk */ | |
708 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) | |
709 | err=UNZ_ERRNO; | |
710 | us.gi.number_entry = uL; | |
711 | ||
712 | /* total number of entries in the central dir */ | |
713 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) | |
714 | err=UNZ_ERRNO; | |
715 | number_entry_CD = uL; | |
716 | ||
717 | if ((number_entry_CD!=us.gi.number_entry) || | |
718 | (number_disk_with_CD!=0) || | |
719 | (number_disk!=0)) | |
720 | err=UNZ_BADZIPFILE; | |
721 | ||
722 | /* size of the central directory */ | |
723 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) | |
724 | err=UNZ_ERRNO; | |
725 | us.size_central_dir = uL; | |
726 | ||
727 | /* offset of start of central directory with respect to the | |
728 | starting disk number */ | |
729 | if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) | |
730 | err=UNZ_ERRNO; | |
731 | us.offset_central_dir = uL; | |
732 | ||
733 | /* zipfile comment length */ | |
734 | if (unz64local_getShort(&us.z_filefunc, us.filestream,&us.gi.size_comment)!=UNZ_OK) | |
735 | err=UNZ_ERRNO; | |
736 | } | |
737 | ||
738 | if ((central_pos<us.offset_central_dir+us.size_central_dir) && | |
739 | (err==UNZ_OK)) | |
740 | err=UNZ_BADZIPFILE; | |
741 | ||
742 | if (err!=UNZ_OK) | |
743 | { | |
744 | ZCLOSE64(us.z_filefunc, us.filestream); | |
745 | return NULL; | |
746 | } | |
747 | ||
748 | us.byte_before_the_zipfile = central_pos - | |
749 | (us.offset_central_dir+us.size_central_dir); | |
750 | us.central_pos = central_pos; | |
751 | us.pfile_in_zip_read = NULL; | |
752 | us.encrypted = 0; | |
753 | ||
754 | ||
755 | s=(unz64_s*)ALLOC(sizeof(unz64_s)); | |
756 | if( s != NULL) | |
757 | { | |
758 | *s=us; | |
759 | unzGoToFirstFile((unzFile)s); | |
760 | } | |
761 | return (unzFile)s; | |
762 | } | |
763 | ||
764 | ||
765 | extern unzFile ZEXPORT unzOpen2 (const char *path, | |
766 | zlib_filefunc_def* pzlib_filefunc32_def) | |
767 | { | |
768 | if (pzlib_filefunc32_def != NULL) | |
769 | { | |
770 | zlib_filefunc64_32_def zlib_filefunc64_32_def_fill; | |
771 | fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill,pzlib_filefunc32_def); | |
772 | return unzOpenInternal(path, &zlib_filefunc64_32_def_fill, 0); | |
773 | } | |
774 | else | |
775 | return unzOpenInternal(path, NULL, 0); | |
776 | } | |
777 | ||
778 | extern unzFile ZEXPORT unzOpen2_64 (const void *path, | |
779 | zlib_filefunc64_def* pzlib_filefunc_def) | |
780 | { | |
781 | if (pzlib_filefunc_def != NULL) | |
782 | { | |
783 | zlib_filefunc64_32_def zlib_filefunc64_32_def_fill; | |
784 | zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def; | |
785 | zlib_filefunc64_32_def_fill.ztell32_file = NULL; | |
786 | zlib_filefunc64_32_def_fill.zseek32_file = NULL; | |
787 | return unzOpenInternal(path, &zlib_filefunc64_32_def_fill, 1); | |
788 | } | |
789 | else | |
790 | return unzOpenInternal(path, NULL, 1); | |
791 | } | |
792 | ||
793 | extern unzFile ZEXPORT unzOpen (const char *path) | |
794 | { | |
795 | return unzOpenInternal(path, NULL, 0); | |
796 | } | |
797 | ||
798 | extern unzFile ZEXPORT unzOpen64 (const void *path) | |
799 | { | |
800 | return unzOpenInternal(path, NULL, 1); | |
801 | } | |
802 | ||
803 | /* | |
da09a436 JB |
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. | |
5ca28f79 L |
807 | return UNZ_OK if there is no problem. */ |
808 | extern int ZEXPORT unzClose (unzFile file) | |
809 | { | |
810 | unz64_s* s; | |
811 | if (file==NULL) | |
812 | return UNZ_PARAMERROR; | |
813 | s=(unz64_s*)file; | |
814 | ||
815 | if (s->pfile_in_zip_read!=NULL) | |
816 | unzCloseCurrentFile(file); | |
817 | ||
818 | ZCLOSE64(s->z_filefunc, s->filestream); | |
819 | TRYFREE(s); | |
820 | return UNZ_OK; | |
821 | } | |
822 | ||
823 | ||
824 | /* | |
825 | Write info about the ZipFile in the *pglobal_info structure. | |
826 | No preparation of the structure is needed | |
827 | return UNZ_OK if there is no problem. */ | |
828 | extern int ZEXPORT unzGetGlobalInfo64 (unzFile file, unz_global_info64* pglobal_info) | |
829 | { | |
830 | unz64_s* s; | |
831 | if (file==NULL) | |
832 | return UNZ_PARAMERROR; | |
833 | s=(unz64_s*)file; | |
834 | *pglobal_info=s->gi; | |
835 | return UNZ_OK; | |
836 | } | |
837 | ||
838 | extern int ZEXPORT unzGetGlobalInfo (unzFile file, unz_global_info* pglobal_info32) | |
839 | { | |
840 | unz64_s* s; | |
841 | if (file==NULL) | |
842 | return UNZ_PARAMERROR; | |
843 | s=(unz64_s*)file; | |
844 | /* to do : check if number_entry is not truncated */ | |
845 | pglobal_info32->number_entry = (uLong)s->gi.number_entry; | |
846 | pglobal_info32->size_comment = s->gi.size_comment; | |
847 | return UNZ_OK; | |
848 | } | |
849 | /* | |
850 | Translate date/time from Dos format to tm_unz (readable more easilty) | |
851 | */ | |
852 | local void unz64local_DosDateToTmuDate (ZPOS64_T ulDosDate, tm_unz* ptm) | |
853 | { | |
854 | ZPOS64_T uDate; | |
855 | uDate = (ZPOS64_T)(ulDosDate>>16); | |
856 | ptm->tm_mday = (uInt)(uDate&0x1f) ; | |
857 | ptm->tm_mon = (uInt)((((uDate)&0x1E0)/0x20)-1) ; | |
858 | ptm->tm_year = (uInt)(((uDate&0x0FE00)/0x0200)+1980) ; | |
859 | ||
860 | ptm->tm_hour = (uInt) ((ulDosDate &0xF800)/0x800); | |
861 | ptm->tm_min = (uInt) ((ulDosDate&0x7E0)/0x20) ; | |
862 | ptm->tm_sec = (uInt) (2*(ulDosDate&0x1f)) ; | |
863 | } | |
864 | ||
865 | /* | |
866 | Get Info about the current file in the zipfile, with internal only info | |
867 | */ | |
868 | local int unz64local_GetCurrentFileInfoInternal OF((unzFile file, | |
869 | unz_file_info64 *pfile_info, | |
870 | unz_file_info64_internal | |
871 | *pfile_info_internal, | |
872 | char *szFileName, | |
873 | uLong fileNameBufferSize, | |
874 | void *extraField, | |
875 | uLong extraFieldBufferSize, | |
876 | char *szComment, | |
877 | uLong commentBufferSize)); | |
878 | ||
879 | local int unz64local_GetCurrentFileInfoInternal (unzFile file, | |
880 | unz_file_info64 *pfile_info, | |
881 | unz_file_info64_internal | |
882 | *pfile_info_internal, | |
883 | char *szFileName, | |
884 | uLong fileNameBufferSize, | |
885 | void *extraField, | |
886 | uLong extraFieldBufferSize, | |
887 | char *szComment, | |
888 | uLong commentBufferSize) | |
889 | { | |
890 | unz64_s* s; | |
891 | unz_file_info64 file_info; | |
892 | unz_file_info64_internal file_info_internal; | |
893 | int err=UNZ_OK; | |
894 | uLong uMagic; | |
895 | long lSeek=0; | |
896 | uLong uL; | |
897 | ||
898 | if (file==NULL) | |
899 | return UNZ_PARAMERROR; | |
900 | s=(unz64_s*)file; | |
901 | if (ZSEEK64(s->z_filefunc, s->filestream, | |
902 | s->pos_in_central_dir+s->byte_before_the_zipfile, | |
903 | ZLIB_FILEFUNC_SEEK_SET)!=0) | |
904 | err=UNZ_ERRNO; | |
905 | ||
906 | ||
907 | /* we check the magic */ | |
908 | if (err==UNZ_OK) | |
909 | { | |
910 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK) | |
911 | err=UNZ_ERRNO; | |
912 | else if (uMagic!=0x02014b50) | |
913 | err=UNZ_BADZIPFILE; | |
914 | } | |
915 | ||
916 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK) | |
917 | err=UNZ_ERRNO; | |
918 | ||
919 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK) | |
920 | err=UNZ_ERRNO; | |
921 | ||
922 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK) | |
923 | err=UNZ_ERRNO; | |
924 | ||
925 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK) | |
926 | err=UNZ_ERRNO; | |
927 | ||
928 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK) | |
929 | err=UNZ_ERRNO; | |
930 | ||
931 | unz64local_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date); | |
932 | ||
933 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK) | |
934 | err=UNZ_ERRNO; | |
935 | ||
936 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) | |
937 | err=UNZ_ERRNO; | |
938 | file_info.compressed_size = uL; | |
939 | ||
940 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) | |
941 | err=UNZ_ERRNO; | |
942 | file_info.uncompressed_size = uL; | |
943 | ||
944 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK) | |
945 | err=UNZ_ERRNO; | |
946 | ||
947 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK) | |
948 | err=UNZ_ERRNO; | |
949 | ||
950 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK) | |
951 | err=UNZ_ERRNO; | |
952 | ||
953 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK) | |
954 | err=UNZ_ERRNO; | |
955 | ||
956 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK) | |
957 | err=UNZ_ERRNO; | |
958 | ||
959 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK) | |
960 | err=UNZ_ERRNO; | |
961 | ||
962 | // relative offset of local header | |
963 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) | |
964 | err=UNZ_ERRNO; | |
965 | file_info_internal.offset_curfile = uL; | |
966 | ||
967 | lSeek+=file_info.size_filename; | |
968 | if ((err==UNZ_OK) && (szFileName!=NULL)) | |
969 | { | |
970 | uLong uSizeRead ; | |
971 | if (file_info.size_filename<fileNameBufferSize) | |
972 | { | |
973 | *(szFileName+file_info.size_filename)='\0'; | |
974 | uSizeRead = file_info.size_filename; | |
975 | } | |
976 | else | |
977 | uSizeRead = fileNameBufferSize; | |
978 | ||
979 | if ((file_info.size_filename>0) && (fileNameBufferSize>0)) | |
980 | if (ZREAD64(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead) | |
981 | err=UNZ_ERRNO; | |
982 | lSeek -= uSizeRead; | |
983 | } | |
984 | ||
985 | // Read extrafield | |
986 | if ((err==UNZ_OK) && (extraField!=NULL)) | |
987 | { | |
988 | ZPOS64_T uSizeRead ; | |
989 | if (file_info.size_file_extra<extraFieldBufferSize) | |
990 | uSizeRead = file_info.size_file_extra; | |
991 | else | |
992 | uSizeRead = extraFieldBufferSize; | |
993 | ||
994 | if (lSeek!=0) | |
995 | { | |
996 | if (ZSEEK64(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) | |
997 | lSeek=0; | |
998 | else | |
999 | err=UNZ_ERRNO; | |
1000 | } | |
1001 | ||
1002 | if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0)) | |
1003 | if (ZREAD64(s->z_filefunc, s->filestream,extraField,(uLong)uSizeRead)!=uSizeRead) | |
1004 | err=UNZ_ERRNO; | |
1005 | ||
1006 | lSeek += file_info.size_file_extra - (uLong)uSizeRead; | |
1007 | } | |
1008 | else | |
1009 | lSeek += file_info.size_file_extra; | |
1010 | ||
1011 | ||
1012 | if ((err==UNZ_OK) && (file_info.size_file_extra != 0)) | |
1013 | { | |
1014 | uLong acc = 0; | |
1015 | ||
1016 | // since lSeek now points to after the extra field we need to move back | |
1017 | lSeek -= file_info.size_file_extra; | |
1018 | ||
1019 | if (lSeek!=0) | |
1020 | { | |
1021 | if (ZSEEK64(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) | |
1022 | lSeek=0; | |
1023 | else | |
1024 | err=UNZ_ERRNO; | |
1025 | } | |
1026 | ||
1027 | while(acc < file_info.size_file_extra) | |
1028 | { | |
1029 | uLong headerId; | |
1030 | uLong dataSize; | |
1031 | ||
1032 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&headerId) != UNZ_OK) | |
1033 | err=UNZ_ERRNO; | |
1034 | ||
1035 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&dataSize) != UNZ_OK) | |
1036 | err=UNZ_ERRNO; | |
1037 | ||
1038 | /* ZIP64 extra fields */ | |
1039 | if (headerId == 0x0001) | |
1040 | { | |
1041 | uLong uL; | |
1042 | ||
1043 | if(file_info.uncompressed_size == MAXU32) | |
1044 | { | |
1045 | if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK) | |
1046 | err=UNZ_ERRNO; | |
1047 | } | |
1048 | ||
1049 | if(file_info.compressed_size == MAXU32) | |
1050 | { | |
1051 | if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK) | |
1052 | err=UNZ_ERRNO; | |
1053 | } | |
1054 | ||
1055 | if(file_info_internal.offset_curfile == MAXU32) | |
1056 | { | |
1057 | /* Relative Header offset */ | |
1058 | if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK) | |
1059 | err=UNZ_ERRNO; | |
1060 | } | |
1061 | ||
1062 | if(file_info.disk_num_start == MAXU32) | |
1063 | { | |
1064 | /* Disk Start Number */ | |
1065 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) | |
1066 | err=UNZ_ERRNO; | |
1067 | } | |
1068 | ||
1069 | } | |
1070 | else | |
1071 | { | |
1072 | if (ZSEEK64(s->z_filefunc, s->filestream,dataSize,ZLIB_FILEFUNC_SEEK_CUR)!=0) | |
1073 | err=UNZ_ERRNO; | |
1074 | } | |
1075 | ||
1076 | acc += 2 + 2 + dataSize; | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | if ((err==UNZ_OK) && (szComment!=NULL)) | |
1081 | { | |
1082 | uLong uSizeRead ; | |
1083 | if (file_info.size_file_comment<commentBufferSize) | |
1084 | { | |
1085 | *(szComment+file_info.size_file_comment)='\0'; | |
1086 | uSizeRead = file_info.size_file_comment; | |
1087 | } | |
1088 | else | |
1089 | uSizeRead = commentBufferSize; | |
1090 | ||
1091 | if (lSeek!=0) | |
1092 | { | |
1093 | if (ZSEEK64(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) | |
1094 | lSeek=0; | |
1095 | else | |
1096 | err=UNZ_ERRNO; | |
1097 | } | |
1098 | ||
1099 | if ((file_info.size_file_comment>0) && (commentBufferSize>0)) | |
1100 | if (ZREAD64(s->z_filefunc, s->filestream,szComment,uSizeRead)!=uSizeRead) | |
1101 | err=UNZ_ERRNO; | |
1102 | lSeek+=file_info.size_file_comment - uSizeRead; | |
1103 | } | |
1104 | else | |
1105 | lSeek+=file_info.size_file_comment; | |
1106 | ||
1107 | ||
1108 | if ((err==UNZ_OK) && (pfile_info!=NULL)) | |
1109 | *pfile_info=file_info; | |
1110 | ||
1111 | if ((err==UNZ_OK) && (pfile_info_internal!=NULL)) | |
1112 | *pfile_info_internal=file_info_internal; | |
1113 | ||
1114 | return err; | |
1115 | } | |
1116 | ||
1117 | ||
1118 | ||
1119 | /* | |
1120 | Write info about the ZipFile in the *pglobal_info structure. | |
1121 | No preparation of the structure is needed | |
1122 | return UNZ_OK if there is no problem. | |
1123 | */ | |
1124 | extern int ZEXPORT unzGetCurrentFileInfo64 (unzFile file, | |
1125 | unz_file_info64 * pfile_info, | |
1126 | char * szFileName, uLong fileNameBufferSize, | |
1127 | void *extraField, uLong extraFieldBufferSize, | |
1128 | char* szComment, uLong commentBufferSize) | |
1129 | { | |
1130 | return unz64local_GetCurrentFileInfoInternal(file,pfile_info,NULL, | |
1131 | szFileName,fileNameBufferSize, | |
1132 | extraField,extraFieldBufferSize, | |
1133 | szComment,commentBufferSize); | |
1134 | } | |
1135 | ||
1136 | extern int ZEXPORT unzGetCurrentFileInfo (unzFile file, | |
1137 | unz_file_info * pfile_info, | |
1138 | char * szFileName, uLong fileNameBufferSize, | |
1139 | void *extraField, uLong extraFieldBufferSize, | |
1140 | char* szComment, uLong commentBufferSize) | |
1141 | { | |
1142 | int err; | |
1143 | unz_file_info64 file_info64; | |
1144 | err = unz64local_GetCurrentFileInfoInternal(file,&file_info64,NULL, | |
1145 | szFileName,fileNameBufferSize, | |
1146 | extraField,extraFieldBufferSize, | |
1147 | szComment,commentBufferSize); | |
1148 | if ((err==UNZ_OK) && (pfile_info != NULL)) | |
1149 | { | |
1150 | pfile_info->version = file_info64.version; | |
1151 | pfile_info->version_needed = file_info64.version_needed; | |
1152 | pfile_info->flag = file_info64.flag; | |
1153 | pfile_info->compression_method = file_info64.compression_method; | |
1154 | pfile_info->dosDate = file_info64.dosDate; | |
1155 | pfile_info->crc = file_info64.crc; | |
1156 | ||
1157 | pfile_info->size_filename = file_info64.size_filename; | |
1158 | pfile_info->size_file_extra = file_info64.size_file_extra; | |
1159 | pfile_info->size_file_comment = file_info64.size_file_comment; | |
1160 | ||
1161 | pfile_info->disk_num_start = file_info64.disk_num_start; | |
1162 | pfile_info->internal_fa = file_info64.internal_fa; | |
1163 | pfile_info->external_fa = file_info64.external_fa; | |
1164 | ||
1165 | pfile_info->tmu_date = file_info64.tmu_date, | |
1166 | ||
1167 | ||
1168 | pfile_info->compressed_size = (uLong)file_info64.compressed_size; | |
1169 | pfile_info->uncompressed_size = (uLong)file_info64.uncompressed_size; | |
1170 | ||
1171 | } | |
1172 | return err; | |
1173 | } | |
1174 | /* | |
1175 | Set the current file of the zipfile to the first file. | |
1176 | return UNZ_OK if there is no problem | |
1177 | */ | |
1178 | extern int ZEXPORT unzGoToFirstFile (unzFile file) | |
1179 | { | |
1180 | int err=UNZ_OK; | |
1181 | unz64_s* s; | |
1182 | if (file==NULL) | |
1183 | return UNZ_PARAMERROR; | |
1184 | s=(unz64_s*)file; | |
1185 | s->pos_in_central_dir=s->offset_central_dir; | |
1186 | s->num_file=0; | |
1187 | err=unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, | |
1188 | &s->cur_file_info_internal, | |
1189 | NULL,0,NULL,0,NULL,0); | |
1190 | s->current_file_ok = (err == UNZ_OK); | |
1191 | return err; | |
1192 | } | |
1193 | ||
1194 | /* | |
1195 | Set the current file of the zipfile to the next file. | |
1196 | return UNZ_OK if there is no problem | |
1197 | return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest. | |
1198 | */ | |
1199 | extern int ZEXPORT unzGoToNextFile (unzFile file) | |
1200 | { | |
1201 | unz64_s* s; | |
1202 | int err; | |
1203 | ||
1204 | if (file==NULL) | |
1205 | return UNZ_PARAMERROR; | |
1206 | s=(unz64_s*)file; | |
1207 | if (!s->current_file_ok) | |
1208 | return UNZ_END_OF_LIST_OF_FILE; | |
1209 | if (s->gi.number_entry != 0xffff) /* 2^16 files overflow hack */ | |
1210 | if (s->num_file+1==s->gi.number_entry) | |
1211 | return UNZ_END_OF_LIST_OF_FILE; | |
1212 | ||
1213 | s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename + | |
1214 | s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment ; | |
1215 | s->num_file++; | |
1216 | err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, | |
1217 | &s->cur_file_info_internal, | |
1218 | NULL,0,NULL,0,NULL,0); | |
1219 | s->current_file_ok = (err == UNZ_OK); | |
1220 | return err; | |
1221 | } | |
1222 | ||
1223 | ||
1224 | /* | |
1225 | Try locate the file szFileName in the zipfile. | |
da09a436 | 1226 | For the iCaseSensitivity signification, see unzStringFileNameCompare |
5ca28f79 L |
1227 | |
1228 | return value : | |
1229 | UNZ_OK if the file is found. It becomes the current file. | |
1230 | UNZ_END_OF_LIST_OF_FILE if the file is not found | |
1231 | */ | |
1232 | extern int ZEXPORT unzLocateFile (unzFile file, const char *szFileName, int iCaseSensitivity) | |
1233 | { | |
1234 | unz64_s* s; | |
1235 | int err; | |
1236 | ||
1237 | /* We remember the 'current' position in the file so that we can jump | |
1238 | * back there if we fail. | |
1239 | */ | |
1240 | unz_file_info64 cur_file_infoSaved; | |
1241 | unz_file_info64_internal cur_file_info_internalSaved; | |
1242 | ZPOS64_T num_fileSaved; | |
1243 | ZPOS64_T pos_in_central_dirSaved; | |
1244 | ||
1245 | ||
1246 | if (file==NULL) | |
1247 | return UNZ_PARAMERROR; | |
1248 | ||
1249 | if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP) | |
1250 | return UNZ_PARAMERROR; | |
1251 | ||
1252 | s=(unz64_s*)file; | |
1253 | if (!s->current_file_ok) | |
1254 | return UNZ_END_OF_LIST_OF_FILE; | |
1255 | ||
1256 | /* Save the current state */ | |
1257 | num_fileSaved = s->num_file; | |
1258 | pos_in_central_dirSaved = s->pos_in_central_dir; | |
1259 | cur_file_infoSaved = s->cur_file_info; | |
1260 | cur_file_info_internalSaved = s->cur_file_info_internal; | |
1261 | ||
1262 | err = unzGoToFirstFile(file); | |
1263 | ||
1264 | while (err == UNZ_OK) | |
1265 | { | |
1266 | char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1]; | |
1267 | err = unzGetCurrentFileInfo64(file,NULL, | |
1268 | szCurrentFileName,sizeof(szCurrentFileName)-1, | |
1269 | NULL,0,NULL,0); | |
1270 | if (err == UNZ_OK) | |
1271 | { | |
1272 | if (unzStringFileNameCompare(szCurrentFileName, | |
1273 | szFileName,iCaseSensitivity)==0) | |
1274 | return UNZ_OK; | |
1275 | err = unzGoToNextFile(file); | |
1276 | } | |
1277 | } | |
1278 | ||
1279 | /* We failed, so restore the state of the 'current file' to where we | |
1280 | * were. | |
1281 | */ | |
1282 | s->num_file = num_fileSaved ; | |
1283 | s->pos_in_central_dir = pos_in_central_dirSaved ; | |
1284 | s->cur_file_info = cur_file_infoSaved; | |
1285 | s->cur_file_info_internal = cur_file_info_internalSaved; | |
1286 | return err; | |
1287 | } | |
1288 | ||
1289 | ||
1290 | /* | |
1291 | /////////////////////////////////////////// | |
1292 | // Contributed by Ryan Haksi (mailto://cryogen@infoserve.net) | |
1293 | // I need random access | |
1294 | // | |
1295 | // Further optimization could be realized by adding an ability | |
1296 | // to cache the directory in memory. The goal being a single | |
1297 | // comprehensive file read to put the file I need in a memory. | |
1298 | */ | |
1299 | ||
1300 | /* | |
1301 | typedef struct unz_file_pos_s | |
1302 | { | |
1303 | ZPOS64_T pos_in_zip_directory; // offset in file | |
1304 | ZPOS64_T num_of_file; // # of file | |
1305 | } unz_file_pos; | |
1306 | */ | |
1307 | ||
1308 | extern int ZEXPORT unzGetFilePos64(unzFile file, unz64_file_pos* file_pos) | |
1309 | { | |
1310 | unz64_s* s; | |
1311 | ||
1312 | if (file==NULL || file_pos==NULL) | |
1313 | return UNZ_PARAMERROR; | |
1314 | s=(unz64_s*)file; | |
1315 | if (!s->current_file_ok) | |
1316 | return UNZ_END_OF_LIST_OF_FILE; | |
1317 | ||
1318 | file_pos->pos_in_zip_directory = s->pos_in_central_dir; | |
1319 | file_pos->num_of_file = s->num_file; | |
1320 | ||
1321 | return UNZ_OK; | |
1322 | } | |
1323 | ||
1324 | extern int ZEXPORT unzGetFilePos( | |
1325 | unzFile file, | |
1326 | unz_file_pos* file_pos) | |
1327 | { | |
1328 | unz64_file_pos file_pos64; | |
1329 | int err = unzGetFilePos64(file,&file_pos64); | |
1330 | if (err==UNZ_OK) | |
1331 | { | |
1332 | file_pos->pos_in_zip_directory = (uLong)file_pos64.pos_in_zip_directory; | |
1333 | file_pos->num_of_file = (uLong)file_pos64.num_of_file; | |
1334 | } | |
1335 | return err; | |
1336 | } | |
1337 | ||
1338 | extern int ZEXPORT unzGoToFilePos64(unzFile file, const unz64_file_pos* file_pos) | |
1339 | { | |
1340 | unz64_s* s; | |
1341 | int err; | |
1342 | ||
1343 | if (file==NULL || file_pos==NULL) | |
1344 | return UNZ_PARAMERROR; | |
1345 | s=(unz64_s*)file; | |
1346 | ||
1347 | /* jump to the right spot */ | |
1348 | s->pos_in_central_dir = file_pos->pos_in_zip_directory; | |
1349 | s->num_file = file_pos->num_of_file; | |
1350 | ||
1351 | /* set the current file */ | |
1352 | err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, | |
1353 | &s->cur_file_info_internal, | |
1354 | NULL,0,NULL,0,NULL,0); | |
1355 | /* return results */ | |
1356 | s->current_file_ok = (err == UNZ_OK); | |
1357 | return err; | |
1358 | } | |
1359 | ||
1360 | extern int ZEXPORT unzGoToFilePos( | |
1361 | unzFile file, | |
1362 | unz_file_pos* file_pos) | |
1363 | { | |
1364 | unz64_file_pos file_pos64; | |
1365 | if (file_pos == NULL) | |
1366 | return UNZ_PARAMERROR; | |
1367 | ||
1368 | file_pos64.pos_in_zip_directory = file_pos->pos_in_zip_directory; | |
1369 | file_pos64.num_of_file = file_pos->num_of_file; | |
1370 | return unzGoToFilePos64(file,&file_pos64); | |
1371 | } | |
1372 | ||
1373 | /* | |
1374 | // Unzip Helper Functions - should be here? | |
1375 | /////////////////////////////////////////// | |
1376 | */ | |
1377 | ||
1378 | /* | |
1379 | Read the local header of the current zipfile | |
1380 | Check the coherency of the local header and info in the end of central | |
1381 | directory about this file | |
1382 | store in *piSizeVar the size of extra info in local header | |
1383 | (filename and size of extra field data) | |
1384 | */ | |
1385 | local int unz64local_CheckCurrentFileCoherencyHeader (unz64_s* s, uInt* piSizeVar, | |
1386 | ZPOS64_T * poffset_local_extrafield, | |
1387 | uInt * psize_local_extrafield) | |
1388 | { | |
1389 | uLong uMagic,uData,uFlags; | |
1390 | uLong size_filename; | |
1391 | uLong size_extra_field; | |
1392 | int err=UNZ_OK; | |
1393 | ||
1394 | *piSizeVar = 0; | |
1395 | *poffset_local_extrafield = 0; | |
1396 | *psize_local_extrafield = 0; | |
1397 | ||
1398 | if (ZSEEK64(s->z_filefunc, s->filestream,s->cur_file_info_internal.offset_curfile + | |
1399 | s->byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0) | |
1400 | return UNZ_ERRNO; | |
1401 | ||
1402 | ||
1403 | if (err==UNZ_OK) | |
1404 | { | |
1405 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK) | |
1406 | err=UNZ_ERRNO; | |
1407 | else if (uMagic!=0x04034b50) | |
1408 | err=UNZ_BADZIPFILE; | |
1409 | } | |
1410 | ||
1411 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) | |
1412 | err=UNZ_ERRNO; | |
1413 | /* | |
1414 | else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion)) | |
1415 | err=UNZ_BADZIPFILE; | |
1416 | */ | |
1417 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK) | |
1418 | err=UNZ_ERRNO; | |
1419 | ||
1420 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) | |
1421 | err=UNZ_ERRNO; | |
1422 | else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compression_method)) | |
1423 | err=UNZ_BADZIPFILE; | |
1424 | ||
1425 | if ((err==UNZ_OK) && (s->cur_file_info.compression_method!=0) && | |
1426 | /* #ifdef HAVE_BZIP2 */ | |
1427 | (s->cur_file_info.compression_method!=Z_BZIP2ED) && | |
1428 | /* #endif */ | |
1429 | (s->cur_file_info.compression_method!=Z_DEFLATED)) | |
1430 | err=UNZ_BADZIPFILE; | |
1431 | ||
1432 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */ | |
1433 | err=UNZ_ERRNO; | |
1434 | ||
1435 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* crc */ | |
1436 | err=UNZ_ERRNO; | |
1437 | else if ((err==UNZ_OK) && (uData!=s->cur_file_info.crc) && ((uFlags & 8)==0)) | |
1438 | err=UNZ_BADZIPFILE; | |
1439 | ||
1440 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */ | |
1441 | err=UNZ_ERRNO; | |
1442 | else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) && ((uFlags & 8)==0)) | |
1443 | err=UNZ_BADZIPFILE; | |
1444 | ||
1445 | if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */ | |
1446 | err=UNZ_ERRNO; | |
1447 | else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) && ((uFlags & 8)==0)) | |
1448 | err=UNZ_BADZIPFILE; | |
1449 | ||
1450 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_filename) != UNZ_OK) | |
1451 | err=UNZ_ERRNO; | |
1452 | else if ((err==UNZ_OK) && (size_filename!=s->cur_file_info.size_filename)) | |
1453 | err=UNZ_BADZIPFILE; | |
1454 | ||
1455 | *piSizeVar += (uInt)size_filename; | |
1456 | ||
1457 | if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_extra_field) != UNZ_OK) | |
1458 | err=UNZ_ERRNO; | |
1459 | *poffset_local_extrafield= s->cur_file_info_internal.offset_curfile + | |
1460 | SIZEZIPLOCALHEADER + size_filename; | |
1461 | *psize_local_extrafield = (uInt)size_extra_field; | |
1462 | ||
1463 | *piSizeVar += (uInt)size_extra_field; | |
1464 | ||
1465 | return err; | |
1466 | } | |
1467 | ||
1468 | /* | |
1469 | Open for reading data the current file in the zipfile. | |
1470 | If there is no error and the file is opened, the return value is UNZ_OK. | |
1471 | */ | |
1472 | extern int ZEXPORT unzOpenCurrentFile3 (unzFile file, int* method, | |
1473 | int* level, int raw, const char* password) | |
1474 | { | |
1475 | int err=UNZ_OK; | |
1476 | uInt iSizeVar; | |
1477 | unz64_s* s; | |
1478 | file_in_zip64_read_info_s* pfile_in_zip_read_info; | |
1479 | ZPOS64_T offset_local_extrafield; /* offset of the local extra field */ | |
1480 | uInt size_local_extrafield; /* size of the local extra field */ | |
1481 | # ifndef NOUNCRYPT | |
1482 | char source[12]; | |
1483 | # else | |
1484 | if (password != NULL) | |
1485 | return UNZ_PARAMERROR; | |
1486 | # endif | |
1487 | ||
1488 | if (file==NULL) | |
1489 | return UNZ_PARAMERROR; | |
1490 | s=(unz64_s*)file; | |
1491 | if (!s->current_file_ok) | |
1492 | return UNZ_PARAMERROR; | |
1493 | ||
1494 | if (s->pfile_in_zip_read != NULL) | |
1495 | unzCloseCurrentFile(file); | |
1496 | ||
1497 | if (unz64local_CheckCurrentFileCoherencyHeader(s,&iSizeVar, &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK) | |
1498 | return UNZ_BADZIPFILE; | |
1499 | ||
1500 | pfile_in_zip_read_info = (file_in_zip64_read_info_s*)ALLOC(sizeof(file_in_zip64_read_info_s)); | |
1501 | if (pfile_in_zip_read_info==NULL) | |
1502 | return UNZ_INTERNALERROR; | |
1503 | ||
1504 | pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE); | |
1505 | pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield; | |
1506 | pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield; | |
1507 | pfile_in_zip_read_info->pos_local_extrafield=0; | |
1508 | pfile_in_zip_read_info->raw=raw; | |
1509 | ||
1510 | if (pfile_in_zip_read_info->read_buffer==NULL) | |
1511 | { | |
1512 | TRYFREE(pfile_in_zip_read_info); | |
1513 | return UNZ_INTERNALERROR; | |
1514 | } | |
1515 | ||
1516 | pfile_in_zip_read_info->stream_initialised=0; | |
1517 | ||
1518 | if (method!=NULL) | |
1519 | *method = (int)s->cur_file_info.compression_method; | |
1520 | ||
1521 | if (level!=NULL) | |
1522 | { | |
1523 | *level = 6; | |
1524 | switch (s->cur_file_info.flag & 0x06) | |
1525 | { | |
1526 | case 6 : *level = 1; break; | |
1527 | case 4 : *level = 2; break; | |
1528 | case 2 : *level = 9; break; | |
1529 | } | |
1530 | } | |
1531 | ||
1532 | if ((s->cur_file_info.compression_method!=0) && | |
1533 | /* #ifdef HAVE_BZIP2 */ | |
1534 | (s->cur_file_info.compression_method!=Z_BZIP2ED) && | |
1535 | /* #endif */ | |
1536 | (s->cur_file_info.compression_method!=Z_DEFLATED)) | |
1537 | ||
1538 | err=UNZ_BADZIPFILE; | |
1539 | ||
1540 | pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc; | |
1541 | pfile_in_zip_read_info->crc32=0; | |
1542 | pfile_in_zip_read_info->total_out_64=0; | |
1543 | pfile_in_zip_read_info->compression_method = s->cur_file_info.compression_method; | |
1544 | pfile_in_zip_read_info->filestream=s->filestream; | |
1545 | pfile_in_zip_read_info->z_filefunc=s->z_filefunc; | |
1546 | pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile; | |
1547 | ||
1548 | pfile_in_zip_read_info->stream.total_out = 0; | |
1549 | ||
1550 | if ((s->cur_file_info.compression_method==Z_BZIP2ED) && (!raw)) | |
1551 | { | |
1552 | #ifdef HAVE_BZIP2 | |
1553 | pfile_in_zip_read_info->bstream.bzalloc = (void *(*) (void *, int, int))0; | |
1554 | pfile_in_zip_read_info->bstream.bzfree = (free_func)0; | |
1555 | pfile_in_zip_read_info->bstream.opaque = (voidpf)0; | |
1556 | pfile_in_zip_read_info->bstream.state = (voidpf)0; | |
1557 | ||
1558 | pfile_in_zip_read_info->stream.zalloc = (alloc_func)0; | |
1559 | pfile_in_zip_read_info->stream.zfree = (free_func)0; | |
1560 | pfile_in_zip_read_info->stream.opaque = (voidpf)0; | |
1561 | pfile_in_zip_read_info->stream.next_in = (voidpf)0; | |
1562 | pfile_in_zip_read_info->stream.avail_in = 0; | |
1563 | ||
1564 | err=BZ2_bzDecompressInit(&pfile_in_zip_read_info->bstream, 0, 0); | |
1565 | if (err == Z_OK) | |
1566 | pfile_in_zip_read_info->stream_initialised=Z_BZIP2ED; | |
1567 | else | |
1568 | { | |
1569 | TRYFREE(pfile_in_zip_read_info); | |
1570 | return err; | |
1571 | } | |
1572 | #else | |
1573 | pfile_in_zip_read_info->raw=1; | |
1574 | #endif | |
1575 | } | |
1576 | else if ((s->cur_file_info.compression_method==Z_DEFLATED) && (!raw)) | |
1577 | { | |
1578 | pfile_in_zip_read_info->stream.zalloc = (alloc_func)0; | |
1579 | pfile_in_zip_read_info->stream.zfree = (free_func)0; | |
1580 | pfile_in_zip_read_info->stream.opaque = (voidpf)0; | |
1581 | pfile_in_zip_read_info->stream.next_in = 0; | |
1582 | pfile_in_zip_read_info->stream.avail_in = 0; | |
1583 | ||
1584 | err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS); | |
1585 | if (err == Z_OK) | |
1586 | pfile_in_zip_read_info->stream_initialised=Z_DEFLATED; | |
1587 | else | |
1588 | { | |
1589 | TRYFREE(pfile_in_zip_read_info); | |
1590 | return err; | |
1591 | } | |
1592 | /* windowBits is passed < 0 to tell that there is no zlib header. | |
1593 | * Note that in this case inflate *requires* an extra "dummy" byte | |
1594 | * after the compressed stream in order to complete decompression and | |
1595 | * return Z_STREAM_END. | |
1596 | * In unzip, i don't wait absolutely Z_STREAM_END because I known the | |
1597 | * size of both compressed and uncompressed data | |
1598 | */ | |
1599 | } | |
1600 | pfile_in_zip_read_info->rest_read_compressed = | |
1601 | s->cur_file_info.compressed_size ; | |
1602 | pfile_in_zip_read_info->rest_read_uncompressed = | |
1603 | s->cur_file_info.uncompressed_size ; | |
1604 | ||
1605 | ||
1606 | pfile_in_zip_read_info->pos_in_zipfile = | |
1607 | s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + | |
1608 | iSizeVar; | |
1609 | ||
1610 | pfile_in_zip_read_info->stream.avail_in = (uInt)0; | |
1611 | ||
1612 | s->pfile_in_zip_read = pfile_in_zip_read_info; | |
1613 | s->encrypted = 0; | |
1614 | ||
1615 | # ifndef NOUNCRYPT | |
1616 | if (password != NULL) | |
1617 | { | |
1618 | int i; | |
1619 | s->pcrc_32_tab = get_crc_table(); | |
1620 | init_keys(password,s->keys,s->pcrc_32_tab); | |
1621 | if (ZSEEK64(s->z_filefunc, s->filestream, | |
1622 | s->pfile_in_zip_read->pos_in_zipfile + | |
1623 | s->pfile_in_zip_read->byte_before_the_zipfile, | |
1624 | SEEK_SET)!=0) | |
1625 | return UNZ_INTERNALERROR; | |
1626 | if(ZREAD64(s->z_filefunc, s->filestream,source, 12)<12) | |
1627 | return UNZ_INTERNALERROR; | |
1628 | ||
1629 | for (i = 0; i<12; i++) | |
1630 | zdecode(s->keys,s->pcrc_32_tab,source[i]); | |
1631 | ||
1632 | s->pfile_in_zip_read->pos_in_zipfile+=12; | |
1633 | s->encrypted=1; | |
1634 | } | |
1635 | # endif | |
1636 | ||
1637 | ||
1638 | return UNZ_OK; | |
1639 | } | |
1640 | ||
1641 | extern int ZEXPORT unzOpenCurrentFile (unzFile file) | |
1642 | { | |
1643 | return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL); | |
1644 | } | |
1645 | ||
1646 | extern int ZEXPORT unzOpenCurrentFilePassword (unzFile file, const char* password) | |
1647 | { | |
1648 | return unzOpenCurrentFile3(file, NULL, NULL, 0, password); | |
1649 | } | |
1650 | ||
1651 | extern int ZEXPORT unzOpenCurrentFile2 (unzFile file, int* method, int* level, int raw) | |
1652 | { | |
1653 | return unzOpenCurrentFile3(file, method, level, raw, NULL); | |
1654 | } | |
1655 | ||
1656 | /** Addition for GDAL : START */ | |
1657 | ||
1658 | extern ZPOS64_T ZEXPORT unzGetCurrentFileZStreamPos64( unzFile file) | |
1659 | { | |
1660 | unz64_s* s; | |
1661 | file_in_zip64_read_info_s* pfile_in_zip_read_info; | |
1662 | s=(unz64_s*)file; | |
1663 | if (file==NULL) | |
1664 | return 0; //UNZ_PARAMERROR; | |
1665 | pfile_in_zip_read_info=s->pfile_in_zip_read; | |
1666 | if (pfile_in_zip_read_info==NULL) | |
1667 | return 0; //UNZ_PARAMERROR; | |
1668 | return pfile_in_zip_read_info->pos_in_zipfile + | |
1669 | pfile_in_zip_read_info->byte_before_the_zipfile; | |
1670 | } | |
1671 | ||
1672 | /** Addition for GDAL : END */ | |
1673 | ||
1674 | /* | |
1675 | Read bytes from the current file. | |
1676 | buf contain buffer where data must be copied | |
1677 | len the size of buf. | |
1678 | ||
1679 | return the number of byte copied if somes bytes are copied | |
1680 | return 0 if the end of file was reached | |
1681 | return <0 with error code if there is an error | |
1682 | (UNZ_ERRNO for IO error, or zLib error for uncompress error) | |
1683 | */ | |
1684 | extern int ZEXPORT unzReadCurrentFile (unzFile file, voidp buf, unsigned len) | |
1685 | { | |
1686 | int err=UNZ_OK; | |
1687 | uInt iRead = 0; | |
1688 | unz64_s* s; | |
1689 | file_in_zip64_read_info_s* pfile_in_zip_read_info; | |
1690 | if (file==NULL) | |
1691 | return UNZ_PARAMERROR; | |
1692 | s=(unz64_s*)file; | |
1693 | pfile_in_zip_read_info=s->pfile_in_zip_read; | |
1694 | ||
1695 | if (pfile_in_zip_read_info==NULL) | |
1696 | return UNZ_PARAMERROR; | |
1697 | ||
1698 | ||
1699 | if (pfile_in_zip_read_info->read_buffer == NULL) | |
1700 | return UNZ_END_OF_LIST_OF_FILE; | |
1701 | if (len==0) | |
1702 | return 0; | |
1703 | ||
1704 | pfile_in_zip_read_info->stream.next_out = (Bytef*)buf; | |
1705 | ||
1706 | pfile_in_zip_read_info->stream.avail_out = (uInt)len; | |
1707 | ||
1708 | if ((len>pfile_in_zip_read_info->rest_read_uncompressed) && | |
1709 | (!(pfile_in_zip_read_info->raw))) | |
1710 | pfile_in_zip_read_info->stream.avail_out = | |
1711 | (uInt)pfile_in_zip_read_info->rest_read_uncompressed; | |
1712 | ||
1713 | if ((len>pfile_in_zip_read_info->rest_read_compressed+ | |
1714 | pfile_in_zip_read_info->stream.avail_in) && | |
1715 | (pfile_in_zip_read_info->raw)) | |
1716 | pfile_in_zip_read_info->stream.avail_out = | |
1717 | (uInt)pfile_in_zip_read_info->rest_read_compressed+ | |
1718 | pfile_in_zip_read_info->stream.avail_in; | |
1719 | ||
1720 | while (pfile_in_zip_read_info->stream.avail_out>0) | |
1721 | { | |
1722 | if ((pfile_in_zip_read_info->stream.avail_in==0) && | |
1723 | (pfile_in_zip_read_info->rest_read_compressed>0)) | |
1724 | { | |
1725 | uInt uReadThis = UNZ_BUFSIZE; | |
1726 | if (pfile_in_zip_read_info->rest_read_compressed<uReadThis) | |
1727 | uReadThis = (uInt)pfile_in_zip_read_info->rest_read_compressed; | |
1728 | if (uReadThis == 0) | |
1729 | return UNZ_EOF; | |
1730 | if (ZSEEK64(pfile_in_zip_read_info->z_filefunc, | |
1731 | pfile_in_zip_read_info->filestream, | |
1732 | pfile_in_zip_read_info->pos_in_zipfile + | |
1733 | pfile_in_zip_read_info->byte_before_the_zipfile, | |
1734 | ZLIB_FILEFUNC_SEEK_SET)!=0) | |
1735 | return UNZ_ERRNO; | |
1736 | if (ZREAD64(pfile_in_zip_read_info->z_filefunc, | |
1737 | pfile_in_zip_read_info->filestream, | |
1738 | pfile_in_zip_read_info->read_buffer, | |
1739 | uReadThis)!=uReadThis) | |
1740 | return UNZ_ERRNO; | |
1741 | ||
1742 | ||
1743 | # ifndef NOUNCRYPT | |
1744 | if(s->encrypted) | |
1745 | { | |
1746 | uInt i; | |
1747 | for(i=0;i<uReadThis;i++) | |
1748 | pfile_in_zip_read_info->read_buffer[i] = | |
1749 | zdecode(s->keys,s->pcrc_32_tab, | |
1750 | pfile_in_zip_read_info->read_buffer[i]); | |
1751 | } | |
1752 | # endif | |
1753 | ||
1754 | ||
1755 | pfile_in_zip_read_info->pos_in_zipfile += uReadThis; | |
1756 | ||
1757 | pfile_in_zip_read_info->rest_read_compressed-=uReadThis; | |
1758 | ||
1759 | pfile_in_zip_read_info->stream.next_in = | |
1760 | (Bytef*)pfile_in_zip_read_info->read_buffer; | |
1761 | pfile_in_zip_read_info->stream.avail_in = (uInt)uReadThis; | |
1762 | } | |
1763 | ||
1764 | if ((pfile_in_zip_read_info->compression_method==0) || (pfile_in_zip_read_info->raw)) | |
1765 | { | |
1766 | uInt uDoCopy,i ; | |
1767 | ||
1768 | if ((pfile_in_zip_read_info->stream.avail_in == 0) && | |
1769 | (pfile_in_zip_read_info->rest_read_compressed == 0)) | |
1770 | return (iRead==0) ? UNZ_EOF : iRead; | |
1771 | ||
1772 | if (pfile_in_zip_read_info->stream.avail_out < | |
1773 | pfile_in_zip_read_info->stream.avail_in) | |
1774 | uDoCopy = pfile_in_zip_read_info->stream.avail_out ; | |
1775 | else | |
1776 | uDoCopy = pfile_in_zip_read_info->stream.avail_in ; | |
1777 | ||
1778 | for (i=0;i<uDoCopy;i++) | |
1779 | *(pfile_in_zip_read_info->stream.next_out+i) = | |
1780 | *(pfile_in_zip_read_info->stream.next_in+i); | |
1781 | ||
1782 | pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uDoCopy; | |
1783 | ||
1784 | pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32, | |
1785 | pfile_in_zip_read_info->stream.next_out, | |
1786 | uDoCopy); | |
1787 | pfile_in_zip_read_info->rest_read_uncompressed-=uDoCopy; | |
1788 | pfile_in_zip_read_info->stream.avail_in -= uDoCopy; | |
1789 | pfile_in_zip_read_info->stream.avail_out -= uDoCopy; | |
1790 | pfile_in_zip_read_info->stream.next_out += uDoCopy; | |
1791 | pfile_in_zip_read_info->stream.next_in += uDoCopy; | |
1792 | pfile_in_zip_read_info->stream.total_out += uDoCopy; | |
1793 | iRead += uDoCopy; | |
1794 | } | |
1795 | else if (pfile_in_zip_read_info->compression_method==Z_BZIP2ED) | |
1796 | { | |
1797 | #ifdef HAVE_BZIP2 | |
1798 | uLong uTotalOutBefore,uTotalOutAfter; | |
1799 | const Bytef *bufBefore; | |
1800 | uLong uOutThis; | |
1801 | ||
1802 | pfile_in_zip_read_info->bstream.next_in = (char*)pfile_in_zip_read_info->stream.next_in; | |
1803 | pfile_in_zip_read_info->bstream.avail_in = pfile_in_zip_read_info->stream.avail_in; | |
1804 | pfile_in_zip_read_info->bstream.total_in_lo32 = pfile_in_zip_read_info->stream.total_in; | |
1805 | pfile_in_zip_read_info->bstream.total_in_hi32 = 0; | |
1806 | pfile_in_zip_read_info->bstream.next_out = (char*)pfile_in_zip_read_info->stream.next_out; | |
1807 | pfile_in_zip_read_info->bstream.avail_out = pfile_in_zip_read_info->stream.avail_out; | |
1808 | pfile_in_zip_read_info->bstream.total_out_lo32 = pfile_in_zip_read_info->stream.total_out; | |
1809 | pfile_in_zip_read_info->bstream.total_out_hi32 = 0; | |
1810 | ||
1811 | uTotalOutBefore = pfile_in_zip_read_info->bstream.total_out_lo32; | |
1812 | bufBefore = (const Bytef *)pfile_in_zip_read_info->bstream.next_out; | |
1813 | ||
1814 | err=BZ2_bzDecompress(&pfile_in_zip_read_info->bstream); | |
1815 | ||
1816 | uTotalOutAfter = pfile_in_zip_read_info->bstream.total_out_lo32; | |
1817 | uOutThis = uTotalOutAfter-uTotalOutBefore; | |
1818 | ||
1819 | pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis; | |
1820 | ||
1821 | pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,bufBefore, (uInt)(uOutThis)); | |
1822 | pfile_in_zip_read_info->rest_read_uncompressed -= uOutThis; | |
1823 | iRead += (uInt)(uTotalOutAfter - uTotalOutBefore); | |
1824 | ||
1825 | pfile_in_zip_read_info->stream.next_in = (Bytef*)pfile_in_zip_read_info->bstream.next_in; | |
1826 | pfile_in_zip_read_info->stream.avail_in = pfile_in_zip_read_info->bstream.avail_in; | |
1827 | pfile_in_zip_read_info->stream.total_in = pfile_in_zip_read_info->bstream.total_in_lo32; | |
1828 | pfile_in_zip_read_info->stream.next_out = (Bytef*)pfile_in_zip_read_info->bstream.next_out; | |
1829 | pfile_in_zip_read_info->stream.avail_out = pfile_in_zip_read_info->bstream.avail_out; | |
1830 | pfile_in_zip_read_info->stream.total_out = pfile_in_zip_read_info->bstream.total_out_lo32; | |
1831 | ||
1832 | if (err==BZ_STREAM_END) | |
1833 | return (iRead==0) ? UNZ_EOF : iRead; | |
1834 | if (err!=BZ_OK) | |
1835 | break; | |
1836 | #endif | |
1837 | } // end Z_BZIP2ED | |
1838 | else | |
1839 | { | |
1840 | ZPOS64_T uTotalOutBefore,uTotalOutAfter; | |
1841 | const Bytef *bufBefore; | |
1842 | ZPOS64_T uOutThis; | |
1843 | int flush=Z_SYNC_FLUSH; | |
1844 | ||
1845 | uTotalOutBefore = pfile_in_zip_read_info->stream.total_out; | |
1846 | bufBefore = pfile_in_zip_read_info->stream.next_out; | |
1847 | ||
1848 | /* | |
1849 | if ((pfile_in_zip_read_info->rest_read_uncompressed == | |
1850 | pfile_in_zip_read_info->stream.avail_out) && | |
1851 | (pfile_in_zip_read_info->rest_read_compressed == 0)) | |
1852 | flush = Z_FINISH; | |
1853 | */ | |
1854 | err=inflate(&pfile_in_zip_read_info->stream,flush); | |
1855 | ||
1856 | if ((err>=0) && (pfile_in_zip_read_info->stream.msg!=NULL)) | |
1857 | err = Z_DATA_ERROR; | |
1858 | ||
1859 | uTotalOutAfter = pfile_in_zip_read_info->stream.total_out; | |
1860 | uOutThis = uTotalOutAfter-uTotalOutBefore; | |
1861 | ||
1862 | pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis; | |
1863 | ||
1864 | pfile_in_zip_read_info->crc32 = | |
1865 | crc32(pfile_in_zip_read_info->crc32,bufBefore, | |
1866 | (uInt)(uOutThis)); | |
1867 | ||
1868 | pfile_in_zip_read_info->rest_read_uncompressed -= | |
1869 | uOutThis; | |
1870 | ||
1871 | iRead += (uInt)(uTotalOutAfter - uTotalOutBefore); | |
1872 | ||
1873 | if (err==Z_STREAM_END) | |
1874 | return (iRead==0) ? UNZ_EOF : iRead; | |
1875 | if (err!=Z_OK) | |
1876 | break; | |
1877 | } | |
1878 | } | |
1879 | ||
1880 | if (err==Z_OK) | |
1881 | return iRead; | |
1882 | return err; | |
1883 | } | |
1884 | ||
1885 | ||
1886 | /* | |
1887 | Give the current position in uncompressed data | |
1888 | */ | |
1889 | extern z_off_t ZEXPORT unztell (unzFile file) | |
1890 | { | |
1891 | unz64_s* s; | |
1892 | file_in_zip64_read_info_s* pfile_in_zip_read_info; | |
1893 | if (file==NULL) | |
1894 | return UNZ_PARAMERROR; | |
1895 | s=(unz64_s*)file; | |
1896 | pfile_in_zip_read_info=s->pfile_in_zip_read; | |
1897 | ||
1898 | if (pfile_in_zip_read_info==NULL) | |
1899 | return UNZ_PARAMERROR; | |
1900 | ||
1901 | return (z_off_t)pfile_in_zip_read_info->stream.total_out; | |
1902 | } | |
1903 | ||
1904 | extern ZPOS64_T ZEXPORT unztell64 (unzFile file) | |
1905 | { | |
1906 | ||
1907 | unz64_s* s; | |
1908 | file_in_zip64_read_info_s* pfile_in_zip_read_info; | |
1909 | if (file==NULL) | |
1910 | return (ZPOS64_T)-1; | |
1911 | s=(unz64_s*)file; | |
1912 | pfile_in_zip_read_info=s->pfile_in_zip_read; | |
1913 | ||
1914 | if (pfile_in_zip_read_info==NULL) | |
1915 | return (ZPOS64_T)-1; | |
1916 | ||
1917 | return pfile_in_zip_read_info->total_out_64; | |
1918 | } | |
1919 | ||
1920 | ||
1921 | /* | |
1922 | return 1 if the end of file was reached, 0 elsewhere | |
1923 | */ | |
1924 | extern int ZEXPORT unzeof (unzFile file) | |
1925 | { | |
1926 | unz64_s* s; | |
1927 | file_in_zip64_read_info_s* pfile_in_zip_read_info; | |
1928 | if (file==NULL) | |
1929 | return UNZ_PARAMERROR; | |
1930 | s=(unz64_s*)file; | |
1931 | pfile_in_zip_read_info=s->pfile_in_zip_read; | |
1932 | ||
1933 | if (pfile_in_zip_read_info==NULL) | |
1934 | return UNZ_PARAMERROR; | |
1935 | ||
1936 | if (pfile_in_zip_read_info->rest_read_uncompressed == 0) | |
1937 | return 1; | |
1938 | else | |
1939 | return 0; | |
1940 | } | |
1941 | ||
1942 | ||
1943 | ||
1944 | /* | |
1945 | Read extra field from the current file (opened by unzOpenCurrentFile) | |
1946 | This is the local-header version of the extra field (sometimes, there is | |
1947 | more info in the local-header version than in the central-header) | |
1948 | ||
1949 | if buf==NULL, it return the size of the local extra field that can be read | |
1950 | ||
1951 | if buf!=NULL, len is the size of the buffer, the extra header is copied in | |
1952 | buf. | |
1953 | the return value is the number of bytes copied in buf, or (if <0) | |
1954 | the error code | |
1955 | */ | |
1956 | extern int ZEXPORT unzGetLocalExtrafield (unzFile file, voidp buf, unsigned len) | |
1957 | { | |
1958 | unz64_s* s; | |
1959 | file_in_zip64_read_info_s* pfile_in_zip_read_info; | |
1960 | uInt read_now; | |
1961 | ZPOS64_T size_to_read; | |
1962 | ||
1963 | if (file==NULL) | |
1964 | return UNZ_PARAMERROR; | |
1965 | s=(unz64_s*)file; | |
1966 | pfile_in_zip_read_info=s->pfile_in_zip_read; | |
1967 | ||
1968 | if (pfile_in_zip_read_info==NULL) | |
1969 | return UNZ_PARAMERROR; | |
1970 | ||
1971 | size_to_read = (pfile_in_zip_read_info->size_local_extrafield - | |
1972 | pfile_in_zip_read_info->pos_local_extrafield); | |
1973 | ||
1974 | if (buf==NULL) | |
1975 | return (int)size_to_read; | |
1976 | ||
1977 | if (len>size_to_read) | |
1978 | read_now = (uInt)size_to_read; | |
1979 | else | |
1980 | read_now = (uInt)len ; | |
1981 | ||
1982 | if (read_now==0) | |
1983 | return 0; | |
1984 | ||
1985 | if (ZSEEK64(pfile_in_zip_read_info->z_filefunc, | |
1986 | pfile_in_zip_read_info->filestream, | |
1987 | pfile_in_zip_read_info->offset_local_extrafield + | |
1988 | pfile_in_zip_read_info->pos_local_extrafield, | |
1989 | ZLIB_FILEFUNC_SEEK_SET)!=0) | |
1990 | return UNZ_ERRNO; | |
1991 | ||
1992 | if (ZREAD64(pfile_in_zip_read_info->z_filefunc, | |
1993 | pfile_in_zip_read_info->filestream, | |
1994 | buf,read_now)!=read_now) | |
1995 | return UNZ_ERRNO; | |
1996 | ||
1997 | return (int)read_now; | |
1998 | } | |
1999 | ||
2000 | /* | |
da09a436 | 2001 | Close the file in zip opened with unzOpenCurrentFile |
5ca28f79 L |
2002 | Return UNZ_CRCERROR if all the file was read but the CRC is not good |
2003 | */ | |
2004 | extern int ZEXPORT unzCloseCurrentFile (unzFile file) | |
2005 | { | |
2006 | int err=UNZ_OK; | |
2007 | ||
2008 | unz64_s* s; | |
2009 | file_in_zip64_read_info_s* pfile_in_zip_read_info; | |
2010 | if (file==NULL) | |
2011 | return UNZ_PARAMERROR; | |
2012 | s=(unz64_s*)file; | |
2013 | pfile_in_zip_read_info=s->pfile_in_zip_read; | |
2014 | ||
2015 | if (pfile_in_zip_read_info==NULL) | |
2016 | return UNZ_PARAMERROR; | |
2017 | ||
2018 | ||
2019 | if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) && | |
2020 | (!pfile_in_zip_read_info->raw)) | |
2021 | { | |
2022 | if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait) | |
2023 | err=UNZ_CRCERROR; | |
2024 | } | |
2025 | ||
2026 | ||
2027 | TRYFREE(pfile_in_zip_read_info->read_buffer); | |
2028 | pfile_in_zip_read_info->read_buffer = NULL; | |
2029 | if (pfile_in_zip_read_info->stream_initialised == Z_DEFLATED) | |
2030 | inflateEnd(&pfile_in_zip_read_info->stream); | |
2031 | #ifdef HAVE_BZIP2 | |
2032 | else if (pfile_in_zip_read_info->stream_initialised == Z_BZIP2ED) | |
2033 | BZ2_bzDecompressEnd(&pfile_in_zip_read_info->bstream); | |
2034 | #endif | |
2035 | ||
2036 | ||
2037 | pfile_in_zip_read_info->stream_initialised = 0; | |
2038 | TRYFREE(pfile_in_zip_read_info); | |
2039 | ||
2040 | s->pfile_in_zip_read=NULL; | |
2041 | ||
2042 | return err; | |
2043 | } | |
2044 | ||
2045 | ||
2046 | /* | |
2047 | Get the global comment string of the ZipFile, in the szComment buffer. | |
2048 | uSizeBuf is the size of the szComment buffer. | |
2049 | return the number of byte copied or an error code <0 | |
2050 | */ | |
2051 | extern int ZEXPORT unzGetGlobalComment (unzFile file, char * szComment, uLong uSizeBuf) | |
2052 | { | |
2053 | unz64_s* s; | |
2054 | uLong uReadThis ; | |
2055 | if (file==NULL) | |
2056 | return (int)UNZ_PARAMERROR; | |
2057 | s=(unz64_s*)file; | |
2058 | ||
2059 | uReadThis = uSizeBuf; | |
2060 | if (uReadThis>s->gi.size_comment) | |
2061 | uReadThis = s->gi.size_comment; | |
2062 | ||
2063 | if (ZSEEK64(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0) | |
2064 | return UNZ_ERRNO; | |
2065 | ||
2066 | if (uReadThis>0) | |
2067 | { | |
2068 | *szComment='\0'; | |
2069 | if (ZREAD64(s->z_filefunc,s->filestream,szComment,uReadThis)!=uReadThis) | |
2070 | return UNZ_ERRNO; | |
2071 | } | |
2072 | ||
2073 | if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment)) | |
2074 | *(szComment+s->gi.size_comment)='\0'; | |
2075 | return (int)uReadThis; | |
2076 | } | |
2077 | ||
2078 | /* Additions by RX '2004 */ | |
2079 | extern ZPOS64_T ZEXPORT unzGetOffset64(unzFile file) | |
2080 | { | |
2081 | unz64_s* s; | |
2082 | ||
2083 | if (file==NULL) | |
2084 | return 0; //UNZ_PARAMERROR; | |
2085 | s=(unz64_s*)file; | |
2086 | if (!s->current_file_ok) | |
2087 | return 0; | |
2088 | if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff) | |
2089 | if (s->num_file==s->gi.number_entry) | |
2090 | return 0; | |
2091 | return s->pos_in_central_dir; | |
2092 | } | |
2093 | ||
2094 | extern uLong ZEXPORT unzGetOffset (unzFile file) | |
2095 | { | |
2096 | ZPOS64_T offset64; | |
2097 | ||
2098 | if (file==NULL) | |
2099 | return 0; //UNZ_PARAMERROR; | |
2100 | offset64 = unzGetOffset64(file); | |
2101 | return (uLong)offset64; | |
2102 | } | |
2103 | ||
2104 | extern int ZEXPORT unzSetOffset64(unzFile file, ZPOS64_T pos) | |
2105 | { | |
2106 | unz64_s* s; | |
2107 | int err; | |
2108 | ||
2109 | if (file==NULL) | |
2110 | return UNZ_PARAMERROR; | |
2111 | s=(unz64_s*)file; | |
2112 | ||
2113 | s->pos_in_central_dir = pos; | |
2114 | s->num_file = s->gi.number_entry; /* hack */ | |
2115 | err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, | |
2116 | &s->cur_file_info_internal, | |
2117 | NULL,0,NULL,0,NULL,0); | |
2118 | s->current_file_ok = (err == UNZ_OK); | |
2119 | return err; | |
2120 | } | |
2121 | ||
2122 | extern int ZEXPORT unzSetOffset (unzFile file, uLong pos) | |
2123 | { | |
2124 | return unzSetOffset64(file,pos); | |
2125 | } |