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authorMark Adler <madler@alumni.caltech.edu>2011-09-09 23:22:37 -0700
committerMark Adler <madler@alumni.caltech.edu>2011-09-09 23:22:37 -0700
commit4b5a43a219d51066c01ff2ab86af18b967f2d0dd (patch)
tree4dcaf0cd18751d04cf638a9a6ec521990d4f2e90 /contrib/minizip/unzip.c
parent086e982175da84b3db958191031380794315f95f (diff)
downloadzlib-1.2.0.5.tar.gz
zlib-1.2.0.5.tar.bz2
zlib-1.2.0.5.zip
zlib 1.2.0.5v1.2.0.5
Diffstat (limited to 'contrib/minizip/unzip.c')
-rw-r--r--contrib/minizip/unzip.c3092
1 files changed, 1546 insertions, 1546 deletions
diff --git a/contrib/minizip/unzip.c b/contrib/minizip/unzip.c
index 96f9f33..81c8c28 100644
--- a/contrib/minizip/unzip.c
+++ b/contrib/minizip/unzip.c
@@ -1,1546 +1,1546 @@
1/* unzip.c -- IO for uncompress .zip files using zlib 1/* unzip.c -- IO for uncompress .zip files using zlib
2 Version 0.22, May 19th, 2003 2 Version 0.22, May 19th, 2003
3 3
4 Copyright (C) 1998-2003 Gilles Vollant 4 Copyright (C) 1998-2003 Gilles Vollant
5 5
6 Read unzip.h for more info 6 Read unzip.h for more info
7*/ 7*/
8 8
9/* Decryption code comes from crypt.c by Info-ZIP but has been greatly reduced in terms of 9/* Decryption code comes from crypt.c by Info-ZIP but has been greatly reduced in terms of
10compatibility with older software. The following is from the original crypt.c. Code 10compatibility with older software. The following is from the original crypt.c. Code
11woven in by Terry Thorsen 1/2003. 11woven in by Terry Thorsen 1/2003.
12*/ 12*/
13/* 13/*
14 Copyright (c) 1990-2000 Info-ZIP. All rights reserved. 14 Copyright (c) 1990-2000 Info-ZIP. All rights reserved.
15 15
16 See the accompanying file LICENSE, version 2000-Apr-09 or later 16 See the accompanying file LICENSE, version 2000-Apr-09 or later
17 (the contents of which are also included in zip.h) for terms of use. 17 (the contents of which are also included in zip.h) for terms of use.
18 If, for some reason, all these files are missing, the Info-ZIP license 18 If, for some reason, all these files are missing, the Info-ZIP license
19 also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html 19 also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html
20*/ 20*/
21/* 21/*
22 crypt.c (full version) by Info-ZIP. Last revised: [see crypt.h] 22 crypt.c (full version) by Info-ZIP. Last revised: [see crypt.h]
23 23
24 The encryption/decryption parts of this source code (as opposed to the 24 The encryption/decryption parts of this source code (as opposed to the
25 non-echoing password parts) were originally written in Europe. The 25 non-echoing password parts) were originally written in Europe. The
26 whole source package can be freely distributed, including from the USA. 26 whole source package can be freely distributed, including from the USA.
27 (Prior to January 2000, re-export from the US was a violation of US law.) 27 (Prior to January 2000, re-export from the US was a violation of US law.)
28 */ 28 */
29 29
30/* 30/*
31 This encryption code is a direct transcription of the algorithm from 31 This encryption code is a direct transcription of the algorithm from
32 Roger Schlafly, described by Phil Katz in the file appnote.txt. This 32 Roger Schlafly, described by Phil Katz in the file appnote.txt. This
33 file (appnote.txt) is distributed with the PKZIP program (even in the 33 file (appnote.txt) is distributed with the PKZIP program (even in the
34 version without encryption capabilities). 34 version without encryption capabilities).
35 */ 35 */
36 36
37 37
38#include <stdio.h> 38#include <stdio.h>
39#include <stdlib.h> 39#include <stdlib.h>
40#include <string.h> 40#include <string.h>
41#include "zlib.h" 41#include "zlib.h"
42#include "unzip.h" 42#include "unzip.h"
43 43
44#ifdef STDC 44#ifdef STDC
45# include <stddef.h> 45# include <stddef.h>
46# include <string.h> 46# include <string.h>
47# include <stdlib.h> 47# include <stdlib.h>
48#endif 48#endif
49#ifdef NO_ERRNO_H 49#ifdef NO_ERRNO_H
50 extern int errno; 50 extern int errno;
51#else 51#else
52# include <errno.h> 52# include <errno.h>
53#endif 53#endif
54 54
55 55
56#ifndef local 56#ifndef local
57# define local static 57# define local static
58#endif 58#endif
59/* compile with -Dlocal if your debugger can't find static symbols */ 59/* compile with -Dlocal if your debugger can't find static symbols */
60 60
61 61
62 62#ifndef CASESENSITIVITYDEFAULT_NO
63#if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES) && \ 63# if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES)
64 !defined(CASESENSITIVITYDEFAULT_NO) 64# define CASESENSITIVITYDEFAULT_NO
65#define CASESENSITIVITYDEFAULT_NO 65# endif
66#endif 66#endif
67 67
68 68
69#ifndef UNZ_BUFSIZE 69#ifndef UNZ_BUFSIZE
70#define UNZ_BUFSIZE (16384) 70#define UNZ_BUFSIZE (16384)
71#endif 71#endif
72 72
73#ifndef UNZ_MAXFILENAMEINZIP 73#ifndef UNZ_MAXFILENAMEINZIP
74#define UNZ_MAXFILENAMEINZIP (256) 74#define UNZ_MAXFILENAMEINZIP (256)
75#endif 75#endif
76 76
77#ifndef ALLOC 77#ifndef ALLOC
78# define ALLOC(size) (malloc(size)) 78# define ALLOC(size) (malloc(size))
79#endif 79#endif
80#ifndef TRYFREE 80#ifndef TRYFREE
81# define TRYFREE(p) {if (p) free(p);} 81# define TRYFREE(p) {if (p) free(p);}
82#endif 82#endif
83 83
84#define SIZECENTRALDIRITEM (0x2e) 84#define SIZECENTRALDIRITEM (0x2e)
85#define SIZEZIPLOCALHEADER (0x1e) 85#define SIZEZIPLOCALHEADER (0x1e)
86 86
87 87
88 88
89 89
90const char unz_copyright[] = 90const char unz_copyright[] =
91 " unzip 0.22 Copyright 1998-2003 Gilles Vollant - http://www.winimage.com/zLibDll"; 91 " unzip 0.22 Copyright 1998-2003 Gilles Vollant - http://www.winimage.com/zLibDll";
92 92
93/* unz_file_info_interntal contain internal info about a file in zipfile*/ 93/* unz_file_info_interntal contain internal info about a file in zipfile*/
94typedef struct unz_file_info_internal_s 94typedef struct unz_file_info_internal_s
95{ 95{
96 uLong offset_curfile;/* relative offset of local header 4 bytes */ 96 uLong offset_curfile;/* relative offset of local header 4 bytes */
97} unz_file_info_internal; 97} unz_file_info_internal;
98 98
99 99
100/* file_in_zip_read_info_s contain internal information about a file in zipfile, 100/* file_in_zip_read_info_s contain internal information about a file in zipfile,
101 when reading and decompress it */ 101 when reading and decompress it */
102typedef struct 102typedef struct
103{ 103{
104 char *read_buffer; /* internal buffer for compressed data */ 104 char *read_buffer; /* internal buffer for compressed data */
105 z_stream stream; /* zLib stream structure for inflate */ 105 z_stream stream; /* zLib stream structure for inflate */
106 106
107 uLong pos_in_zipfile; /* position in byte on the zipfile, for fseek*/ 107 uLong pos_in_zipfile; /* position in byte on the zipfile, for fseek*/
108 uLong stream_initialised; /* flag set if stream structure is initialised*/ 108 uLong stream_initialised; /* flag set if stream structure is initialised*/
109 109
110 uLong offset_local_extrafield;/* offset of the local extra field */ 110 uLong offset_local_extrafield;/* offset of the local extra field */
111 uInt size_local_extrafield;/* size of the local extra field */ 111 uInt size_local_extrafield;/* size of the local extra field */
112 uLong pos_local_extrafield; /* position in the local extra field in read*/ 112 uLong pos_local_extrafield; /* position in the local extra field in read*/
113 113
114 uLong crc32; /* crc32 of all data uncompressed */ 114 uLong crc32; /* crc32 of all data uncompressed */
115 uLong crc32_wait; /* crc32 we must obtain after decompress all */ 115 uLong crc32_wait; /* crc32 we must obtain after decompress all */
116 uLong rest_read_compressed; /* number of byte to be decompressed */ 116 uLong rest_read_compressed; /* number of byte to be decompressed */
117 uLong rest_read_uncompressed;/*number of byte to be obtained after decomp*/ 117 uLong rest_read_uncompressed;/*number of byte to be obtained after decomp*/
118 zlib_filefunc_def z_filefunc; 118 zlib_filefunc_def z_filefunc;
119 voidpf filestream; /* io structore of the zipfile */ 119 voidpf filestream; /* io structore of the zipfile */
120 uLong compression_method; /* compression method (0==store) */ 120 uLong compression_method; /* compression method (0==store) */
121 uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ 121 uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
122 int raw; 122 int raw;
123} file_in_zip_read_info_s; 123} file_in_zip_read_info_s;
124 124
125 125
126/* unz_s contain internal information about the zipfile 126/* unz_s contain internal information about the zipfile
127*/ 127*/
128typedef struct 128typedef struct
129{ 129{
130 zlib_filefunc_def z_filefunc; 130 zlib_filefunc_def z_filefunc;
131 voidpf filestream; /* io structore of the zipfile */ 131 voidpf filestream; /* io structore of the zipfile */
132 unz_global_info gi; /* public global information */ 132 unz_global_info gi; /* public global information */
133 uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ 133 uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
134 uLong num_file; /* number of the current file in the zipfile*/ 134 uLong num_file; /* number of the current file in the zipfile*/
135 uLong pos_in_central_dir; /* pos of the current file in the central dir*/ 135 uLong pos_in_central_dir; /* pos of the current file in the central dir*/
136 uLong current_file_ok; /* flag about the usability of the current file*/ 136 uLong current_file_ok; /* flag about the usability of the current file*/
137 uLong central_pos; /* position of the beginning of the central dir*/ 137 uLong central_pos; /* position of the beginning of the central dir*/
138 138
139 uLong size_central_dir; /* size of the central directory */ 139 uLong size_central_dir; /* size of the central directory */
140 uLong offset_central_dir; /* offset of start of central directory with 140 uLong offset_central_dir; /* offset of start of central directory with
141 respect to the starting disk number */ 141 respect to the starting disk number */
142 142
143 unz_file_info cur_file_info; /* public info about the current file in zip*/ 143 unz_file_info cur_file_info; /* public info about the current file in zip*/
144 unz_file_info_internal cur_file_info_internal; /* private info about it*/ 144 unz_file_info_internal cur_file_info_internal; /* private info about it*/
145 file_in_zip_read_info_s* pfile_in_zip_read; /* structure about the current 145 file_in_zip_read_info_s* pfile_in_zip_read; /* structure about the current
146 file if we are decompressing it */ 146 file if we are decompressing it */
147 int encrypted; 147 int encrypted;
148 #ifndef NOUNCRYPT 148# ifndef NOUNCRYPT
149 unsigned long keys[3]; /* keys defining the pseudo-random sequence */ 149 unsigned long keys[3]; /* keys defining the pseudo-random sequence */
150 const unsigned long* pcrc_32_tab; 150 const unsigned long* pcrc_32_tab;
151 #endif 151# endif
152} unz_s; 152} unz_s;
153 153
154 154
155#ifndef NOUNCRYPT 155#ifndef NOUNCRYPT
156#include "crypt.h" 156#include "crypt.h"
157#endif 157#endif
158 158
159/* =========================================================================== 159/* ===========================================================================
160 Read a byte from a gz_stream; update next_in and avail_in. Return EOF 160 Read a byte from a gz_stream; update next_in and avail_in. Return EOF
161 for end of file. 161 for end of file.
162 IN assertion: the stream s has been sucessfully opened for reading. 162 IN assertion: the stream s has been sucessfully opened for reading.
163*/ 163*/
164 164
165 165
166local int unzlocal_getByte OF(( 166local int unzlocal_getByte OF((
167 const zlib_filefunc_def* pzlib_filefunc_def, 167 const zlib_filefunc_def* pzlib_filefunc_def,
168 voidpf filestream, 168 voidpf filestream,
169 int *pi)); 169 int *pi));
170 170
171local int unzlocal_getByte(pzlib_filefunc_def,filestream,pi) 171local int unzlocal_getByte(pzlib_filefunc_def,filestream,pi)
172 const zlib_filefunc_def* pzlib_filefunc_def; 172 const zlib_filefunc_def* pzlib_filefunc_def;
173 voidpf filestream; 173 voidpf filestream;
174 int *pi; 174 int *pi;
175{ 175{
176 unsigned char c; 176 unsigned char c;
177 int err = (int)ZREAD(*pzlib_filefunc_def,filestream,&c,1); 177 int err = (int)ZREAD(*pzlib_filefunc_def,filestream,&c,1);
178 if (err==1) 178 if (err==1)
179 { 179 {
180 *pi = (int)c; 180 *pi = (int)c;
181 return UNZ_OK; 181 return UNZ_OK;
182 } 182 }
183 else 183 else
184 { 184 {
185 if (ZERROR(*pzlib_filefunc_def,filestream)) 185 if (ZERROR(*pzlib_filefunc_def,filestream))
186 return UNZ_ERRNO; 186 return UNZ_ERRNO;
187 else 187 else
188 return UNZ_EOF; 188 return UNZ_EOF;
189 } 189 }
190} 190}
191 191
192 192
193/* =========================================================================== 193/* ===========================================================================
194 Reads a long in LSB order from the given gz_stream. Sets 194 Reads a long in LSB order from the given gz_stream. Sets
195*/ 195*/
196local int unzlocal_getShort OF(( 196local int unzlocal_getShort OF((
197 const zlib_filefunc_def* pzlib_filefunc_def, 197 const zlib_filefunc_def* pzlib_filefunc_def,
198 voidpf filestream, 198 voidpf filestream,
199 uLong *pX)); 199 uLong *pX));
200 200
201local int unzlocal_getShort (pzlib_filefunc_def,filestream,pX) 201local int unzlocal_getShort (pzlib_filefunc_def,filestream,pX)
202 const zlib_filefunc_def* pzlib_filefunc_def; 202 const zlib_filefunc_def* pzlib_filefunc_def;
203 voidpf filestream; 203 voidpf filestream;
204 uLong *pX; 204 uLong *pX;
205{ 205{
206 uLong x ; 206 uLong x ;
207 int i; 207 int i;
208 int err; 208 int err;
209 209
210 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i); 210 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
211 x = (uLong)i; 211 x = (uLong)i;
212 212
213 if (err==UNZ_OK) 213 if (err==UNZ_OK)
214 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i); 214 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
215 x += ((uLong)i)<<8; 215 x += ((uLong)i)<<8;
216 216
217 if (err==UNZ_OK) 217 if (err==UNZ_OK)
218 *pX = x; 218 *pX = x;
219 else 219 else
220 *pX = 0; 220 *pX = 0;
221 return err; 221 return err;
222} 222}
223 223
224local int unzlocal_getLong OF(( 224local int unzlocal_getLong OF((
225 const zlib_filefunc_def* pzlib_filefunc_def, 225 const zlib_filefunc_def* pzlib_filefunc_def,
226 voidpf filestream, 226 voidpf filestream,
227 uLong *pX)); 227 uLong *pX));
228 228
229local int unzlocal_getLong (pzlib_filefunc_def,filestream,pX) 229local int unzlocal_getLong (pzlib_filefunc_def,filestream,pX)
230 const zlib_filefunc_def* pzlib_filefunc_def; 230 const zlib_filefunc_def* pzlib_filefunc_def;
231 voidpf filestream; 231 voidpf filestream;
232 uLong *pX; 232 uLong *pX;
233{ 233{
234 uLong x ; 234 uLong x ;
235 int i; 235 int i;
236 int err; 236 int err;
237 237
238 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i); 238 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
239 x = (uLong)i; 239 x = (uLong)i;
240 240
241 if (err==UNZ_OK) 241 if (err==UNZ_OK)
242 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i); 242 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
243 x += ((uLong)i)<<8; 243 x += ((uLong)i)<<8;
244 244
245 if (err==UNZ_OK) 245 if (err==UNZ_OK)
246 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i); 246 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
247 x += ((uLong)i)<<16; 247 x += ((uLong)i)<<16;
248 248
249 if (err==UNZ_OK) 249 if (err==UNZ_OK)
250 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i); 250 err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
251 x += ((uLong)i)<<24; 251 x += ((uLong)i)<<24;
252 252
253 if (err==UNZ_OK) 253 if (err==UNZ_OK)
254 *pX = x; 254 *pX = x;
255 else 255 else
256 *pX = 0; 256 *pX = 0;
257 return err; 257 return err;
258} 258}
259 259
260 260
261/* My own strcmpi / strcasecmp */ 261/* My own strcmpi / strcasecmp */
262local int strcmpcasenosensitive_internal (fileName1,fileName2) 262local int strcmpcasenosensitive_internal (fileName1,fileName2)
263 const char* fileName1; 263 const char* fileName1;
264 const char* fileName2; 264 const char* fileName2;
265{ 265{
266 for (;;) 266 for (;;)
267 { 267 {
268 char c1=*(fileName1++); 268 char c1=*(fileName1++);
269 char c2=*(fileName2++); 269 char c2=*(fileName2++);
270 if ((c1>='a') && (c1<='z')) 270 if ((c1>='a') && (c1<='z'))
271 c1 -= 0x20; 271 c1 -= 0x20;
272 if ((c2>='a') && (c2<='z')) 272 if ((c2>='a') && (c2<='z'))
273 c2 -= 0x20; 273 c2 -= 0x20;
274 if (c1=='\0') 274 if (c1=='\0')
275 return ((c2=='\0') ? 0 : -1); 275 return ((c2=='\0') ? 0 : -1);
276 if (c2=='\0') 276 if (c2=='\0')
277 return 1; 277 return 1;
278 if (c1<c2) 278 if (c1<c2)
279 return -1; 279 return -1;
280 if (c1>c2) 280 if (c1>c2)
281 return 1; 281 return 1;
282 } 282 }
283} 283}
284 284
285 285
286#ifdef CASESENSITIVITYDEFAULT_NO 286#ifdef CASESENSITIVITYDEFAULT_NO
287#define CASESENSITIVITYDEFAULTVALUE 2 287#define CASESENSITIVITYDEFAULTVALUE 2
288#else 288#else
289#define CASESENSITIVITYDEFAULTVALUE 1 289#define CASESENSITIVITYDEFAULTVALUE 1
290#endif 290#endif
291 291
292#ifndef STRCMPCASENOSENTIVEFUNCTION 292#ifndef STRCMPCASENOSENTIVEFUNCTION
293#define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal 293#define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal
294#endif 294#endif
295 295
296/* 296/*
297 Compare two filename (fileName1,fileName2). 297 Compare two filename (fileName1,fileName2).
298 If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp) 298 If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp)
299 If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi 299 If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi
300 or strcasecmp) 300 or strcasecmp)
301 If iCaseSenisivity = 0, case sensitivity is defaut of your operating system 301 If iCaseSenisivity = 0, case sensitivity is defaut of your operating system
302 (like 1 on Unix, 2 on Windows) 302 (like 1 on Unix, 2 on Windows)
303 303
304*/ 304*/
305extern int ZEXPORT unzStringFileNameCompare (fileName1,fileName2,iCaseSensitivity) 305extern int ZEXPORT unzStringFileNameCompare (fileName1,fileName2,iCaseSensitivity)
306 const char* fileName1; 306 const char* fileName1;
307 const char* fileName2; 307 const char* fileName2;
308 int iCaseSensitivity; 308 int iCaseSensitivity;
309{ 309{
310 if (iCaseSensitivity==0) 310 if (iCaseSensitivity==0)
311 iCaseSensitivity=CASESENSITIVITYDEFAULTVALUE; 311 iCaseSensitivity=CASESENSITIVITYDEFAULTVALUE;
312 312
313 if (iCaseSensitivity==1) 313 if (iCaseSensitivity==1)
314 return strcmp(fileName1,fileName2); 314 return strcmp(fileName1,fileName2);
315 315
316 return STRCMPCASENOSENTIVEFUNCTION(fileName1,fileName2); 316 return STRCMPCASENOSENTIVEFUNCTION(fileName1,fileName2);
317} 317}
318 318
319#ifndef BUFREADCOMMENT 319#ifndef BUFREADCOMMENT
320#define BUFREADCOMMENT (0x400) 320#define BUFREADCOMMENT (0x400)
321#endif 321#endif
322 322
323/* 323/*
324 Locate the Central directory of a zipfile (at the end, just before 324 Locate the Central directory of a zipfile (at the end, just before
325 the global comment) 325 the global comment)
326*/ 326*/
327local uLong unzlocal_SearchCentralDir OF(( 327local uLong unzlocal_SearchCentralDir OF((
328 const zlib_filefunc_def* pzlib_filefunc_def, 328 const zlib_filefunc_def* pzlib_filefunc_def,
329 voidpf filestream)); 329 voidpf filestream));
330 330
331local uLong unzlocal_SearchCentralDir(pzlib_filefunc_def,filestream) 331local uLong unzlocal_SearchCentralDir(pzlib_filefunc_def,filestream)
332 const zlib_filefunc_def* pzlib_filefunc_def; 332 const zlib_filefunc_def* pzlib_filefunc_def;
333 voidpf filestream; 333 voidpf filestream;
334{ 334{
335 unsigned char* buf; 335 unsigned char* buf;
336 uLong uSizeFile; 336 uLong uSizeFile;
337 uLong uBackRead; 337 uLong uBackRead;
338 uLong uMaxBack=0xffff; /* maximum size of global comment */ 338 uLong uMaxBack=0xffff; /* maximum size of global comment */
339 uLong uPosFound=0; 339 uLong uPosFound=0;
340 340
341 if (ZSEEK(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) 341 if (ZSEEK(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
342 return 0; 342 return 0;
343 343
344 344
345 uSizeFile = ZTELL(*pzlib_filefunc_def,filestream); 345 uSizeFile = ZTELL(*pzlib_filefunc_def,filestream);
346 346
347 if (uMaxBack>uSizeFile) 347 if (uMaxBack>uSizeFile)
348 uMaxBack = uSizeFile; 348 uMaxBack = uSizeFile;
349 349
350 buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); 350 buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
351 if (buf==NULL) 351 if (buf==NULL)
352 return 0; 352 return 0;
353 353
354 uBackRead = 4; 354 uBackRead = 4;
355 while (uBackRead<uMaxBack) 355 while (uBackRead<uMaxBack)
356 { 356 {
357 uLong uReadSize,uReadPos ; 357 uLong uReadSize,uReadPos ;
358 int i; 358 int i;
359 if (uBackRead+BUFREADCOMMENT>uMaxBack) 359 if (uBackRead+BUFREADCOMMENT>uMaxBack)
360 uBackRead = uMaxBack; 360 uBackRead = uMaxBack;
361 else 361 else
362 uBackRead+=BUFREADCOMMENT; 362 uBackRead+=BUFREADCOMMENT;
363 uReadPos = uSizeFile-uBackRead ; 363 uReadPos = uSizeFile-uBackRead ;
364 364
365 uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? 365 uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
366 (BUFREADCOMMENT+4) : (uSizeFile-uReadPos); 366 (BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
367 if (ZSEEK(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0) 367 if (ZSEEK(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
368 break; 368 break;
369 369
370 if (ZREAD(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) 370 if (ZREAD(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
371 break; 371 break;
372 372
373 for (i=(int)uReadSize-3; (i--)>0;) 373 for (i=(int)uReadSize-3; (i--)>0;)
374 if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && 374 if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
375 ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06)) 375 ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
376 { 376 {
377 uPosFound = uReadPos+i; 377 uPosFound = uReadPos+i;
378 break; 378 break;
379 } 379 }
380 380
381 if (uPosFound!=0) 381 if (uPosFound!=0)
382 break; 382 break;
383 } 383 }
384 TRYFREE(buf); 384 TRYFREE(buf);
385 return uPosFound; 385 return uPosFound;
386} 386}
387 387
388/* 388/*
389 Open a Zip file. path contain the full pathname (by example, 389 Open a Zip file. path contain the full pathname (by example,
390 on a Windows NT computer "c:\\test\\zlib114.zip" or on an Unix computer 390 on a Windows NT computer "c:\\test\\zlib114.zip" or on an Unix computer
391 "zlib/zlib114.zip". 391 "zlib/zlib114.zip".
392 If the zipfile cannot be opened (file doesn't exist or in not valid), the 392 If the zipfile cannot be opened (file doesn't exist or in not valid), the
393 return value is NULL. 393 return value is NULL.
394 Else, the return value is a unzFile Handle, usable with other function 394 Else, the return value is a unzFile Handle, usable with other function
395 of this unzip package. 395 of this unzip package.
396*/ 396*/
397extern unzFile ZEXPORT unzOpen2 (path, pzlib_filefunc_def) 397extern unzFile ZEXPORT unzOpen2 (path, pzlib_filefunc_def)
398 const char *path; 398 const char *path;
399 zlib_filefunc_def* pzlib_filefunc_def; 399 zlib_filefunc_def* pzlib_filefunc_def;
400{ 400{
401 unz_s us; 401 unz_s us;
402 unz_s *s; 402 unz_s *s;
403 uLong central_pos,uL; 403 uLong central_pos,uL;
404 404
405 uLong number_disk; /* number of the current dist, used for 405 uLong number_disk; /* number of the current dist, used for
406 spaning ZIP, unsupported, always 0*/ 406 spaning ZIP, unsupported, always 0*/
407 uLong number_disk_with_CD; /* number the the disk with central dir, used 407 uLong number_disk_with_CD; /* number the the disk with central dir, used
408 for spaning ZIP, unsupported, always 0*/ 408 for spaning ZIP, unsupported, always 0*/
409 uLong number_entry_CD; /* total number of entries in 409 uLong number_entry_CD; /* total number of entries in
410 the central dir 410 the central dir
411 (same than number_entry on nospan) */ 411 (same than number_entry on nospan) */
412 412
413 int err=UNZ_OK; 413 int err=UNZ_OK;
414 414
415 if (unz_copyright[0]!=' ') 415 if (unz_copyright[0]!=' ')
416 return NULL; 416 return NULL;
417 417
418 if (pzlib_filefunc_def==NULL) 418 if (pzlib_filefunc_def==NULL)
419 fill_fopen_filefunc(&us.z_filefunc); 419 fill_fopen_filefunc(&us.z_filefunc);
420 else 420 else
421 us.z_filefunc = *pzlib_filefunc_def; 421 us.z_filefunc = *pzlib_filefunc_def;
422 422
423 us.filestream= (*(us.z_filefunc.zopen_file))(us.z_filefunc.opaque, 423 us.filestream= (*(us.z_filefunc.zopen_file))(us.z_filefunc.opaque,
424 path, 424 path,
425 ZLIB_FILEFUNC_MODE_READ | 425 ZLIB_FILEFUNC_MODE_READ |
426 ZLIB_FILEFUNC_MODE_EXISTING); 426 ZLIB_FILEFUNC_MODE_EXISTING);
427 if (us.filestream==NULL) 427 if (us.filestream==NULL)
428 return NULL; 428 return NULL;
429 429
430 central_pos = unzlocal_SearchCentralDir(&us.z_filefunc,us.filestream); 430 central_pos = unzlocal_SearchCentralDir(&us.z_filefunc,us.filestream);
431 if (central_pos==0) 431 if (central_pos==0)
432 err=UNZ_ERRNO; 432 err=UNZ_ERRNO;
433 433
434 if (ZSEEK(us.z_filefunc, us.filestream, 434 if (ZSEEK(us.z_filefunc, us.filestream,
435 central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0) 435 central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
436 err=UNZ_ERRNO; 436 err=UNZ_ERRNO;
437 437
438 /* the signature, already checked */ 438 /* the signature, already checked */
439 if (unzlocal_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) 439 if (unzlocal_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
440 err=UNZ_ERRNO; 440 err=UNZ_ERRNO;
441 441
442 /* number of this disk */ 442 /* number of this disk */
443 if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK) 443 if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK)
444 err=UNZ_ERRNO; 444 err=UNZ_ERRNO;
445 445
446 /* number of the disk with the start of the central directory */ 446 /* number of the disk with the start of the central directory */
447 if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK) 447 if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK)
448 err=UNZ_ERRNO; 448 err=UNZ_ERRNO;
449 449
450 /* total number of entries in the central dir on this disk */ 450 /* total number of entries in the central dir on this disk */
451 if (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK) 451 if (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK)
452 err=UNZ_ERRNO; 452 err=UNZ_ERRNO;
453 453
454 /* total number of entries in the central dir */ 454 /* total number of entries in the central dir */
455 if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_entry_CD)!=UNZ_OK) 455 if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_entry_CD)!=UNZ_OK)
456 err=UNZ_ERRNO; 456 err=UNZ_ERRNO;
457 457
458 if ((number_entry_CD!=us.gi.number_entry) || 458 if ((number_entry_CD!=us.gi.number_entry) ||
459 (number_disk_with_CD!=0) || 459 (number_disk_with_CD!=0) ||
460 (number_disk!=0)) 460 (number_disk!=0))
461 err=UNZ_BADZIPFILE; 461 err=UNZ_BADZIPFILE;
462 462
463 /* size of the central directory */ 463 /* size of the central directory */
464 if (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.size_central_dir)!=UNZ_OK) 464 if (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.size_central_dir)!=UNZ_OK)
465 err=UNZ_ERRNO; 465 err=UNZ_ERRNO;
466 466
467 /* offset of start of central directory with respect to the 467 /* offset of start of central directory with respect to the
468 starting disk number */ 468 starting disk number */
469 if (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK) 469 if (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK)
470 err=UNZ_ERRNO; 470 err=UNZ_ERRNO;
471 471
472 /* zipfile comment length */ 472 /* zipfile comment length */
473 if (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.size_comment)!=UNZ_OK) 473 if (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.size_comment)!=UNZ_OK)
474 err=UNZ_ERRNO; 474 err=UNZ_ERRNO;
475 475
476 if ((central_pos<us.offset_central_dir+us.size_central_dir) && 476 if ((central_pos<us.offset_central_dir+us.size_central_dir) &&
477 (err==UNZ_OK)) 477 (err==UNZ_OK))
478 err=UNZ_BADZIPFILE; 478 err=UNZ_BADZIPFILE;
479 479
480 if (err!=UNZ_OK) 480 if (err!=UNZ_OK)
481 { 481 {
482 ZCLOSE(us.z_filefunc, us.filestream); 482 ZCLOSE(us.z_filefunc, us.filestream);
483 return NULL; 483 return NULL;
484 } 484 }
485 485
486 us.byte_before_the_zipfile = central_pos - 486 us.byte_before_the_zipfile = central_pos -
487 (us.offset_central_dir+us.size_central_dir); 487 (us.offset_central_dir+us.size_central_dir);
488 us.central_pos = central_pos; 488 us.central_pos = central_pos;
489 us.pfile_in_zip_read = NULL; 489 us.pfile_in_zip_read = NULL;
490 us.encrypted = 0; 490 us.encrypted = 0;
491 491
492 492
493 s=(unz_s*)ALLOC(sizeof(unz_s)); 493 s=(unz_s*)ALLOC(sizeof(unz_s));
494 *s=us; 494 *s=us;
495 unzGoToFirstFile((unzFile)s); 495 unzGoToFirstFile((unzFile)s);
496 return (unzFile)s; 496 return (unzFile)s;
497} 497}
498 498
499 499
500extern unzFile ZEXPORT unzOpen (path) 500extern unzFile ZEXPORT unzOpen (path)
501 const char *path; 501 const char *path;
502{ 502{
503 return unzOpen2(path, NULL); 503 return unzOpen2(path, NULL);
504} 504}
505 505
506/* 506/*
507 Close a ZipFile opened with unzipOpen. 507 Close a ZipFile opened with unzipOpen.
508 If there is files inside the .Zip opened with unzipOpenCurrentFile (see later), 508 If there is files inside the .Zip opened with unzipOpenCurrentFile (see later),
509 these files MUST be closed with unzipCloseCurrentFile before call unzipClose. 509 these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
510 return UNZ_OK if there is no problem. */ 510 return UNZ_OK if there is no problem. */
511extern int ZEXPORT unzClose (file) 511extern int ZEXPORT unzClose (file)
512 unzFile file; 512 unzFile file;
513{ 513{
514 unz_s* s; 514 unz_s* s;
515 if (file==NULL) 515 if (file==NULL)
516 return UNZ_PARAMERROR; 516 return UNZ_PARAMERROR;
517 s=(unz_s*)file; 517 s=(unz_s*)file;
518 518
519 if (s->pfile_in_zip_read!=NULL) 519 if (s->pfile_in_zip_read!=NULL)
520 unzCloseCurrentFile(file); 520 unzCloseCurrentFile(file);
521 521
522 ZCLOSE(s->z_filefunc, s->filestream); 522 ZCLOSE(s->z_filefunc, s->filestream);
523 TRYFREE(s); 523 TRYFREE(s);
524 return UNZ_OK; 524 return UNZ_OK;
525} 525}
526 526
527 527
528/* 528/*
529 Write info about the ZipFile in the *pglobal_info structure. 529 Write info about the ZipFile in the *pglobal_info structure.
530 No preparation of the structure is needed 530 No preparation of the structure is needed
531 return UNZ_OK if there is no problem. */ 531 return UNZ_OK if there is no problem. */
532extern int ZEXPORT unzGetGlobalInfo (file,pglobal_info) 532extern int ZEXPORT unzGetGlobalInfo (file,pglobal_info)
533 unzFile file; 533 unzFile file;
534 unz_global_info *pglobal_info; 534 unz_global_info *pglobal_info;
535{ 535{
536 unz_s* s; 536 unz_s* s;
537 if (file==NULL) 537 if (file==NULL)
538 return UNZ_PARAMERROR; 538 return UNZ_PARAMERROR;
539 s=(unz_s*)file; 539 s=(unz_s*)file;
540 *pglobal_info=s->gi; 540 *pglobal_info=s->gi;
541 return UNZ_OK; 541 return UNZ_OK;
542} 542}
543 543
544 544
545/* 545/*
546 Translate date/time from Dos format to tm_unz (readable more easilty) 546 Translate date/time from Dos format to tm_unz (readable more easilty)
547*/ 547*/
548local void unzlocal_DosDateToTmuDate (ulDosDate, ptm) 548local void unzlocal_DosDateToTmuDate (ulDosDate, ptm)
549 uLong ulDosDate; 549 uLong ulDosDate;
550 tm_unz* ptm; 550 tm_unz* ptm;
551{ 551{
552 uLong uDate; 552 uLong uDate;
553 uDate = (uLong)(ulDosDate>>16); 553 uDate = (uLong)(ulDosDate>>16);
554 ptm->tm_mday = (uInt)(uDate&0x1f) ; 554 ptm->tm_mday = (uInt)(uDate&0x1f) ;
555 ptm->tm_mon = (uInt)((((uDate)&0x1E0)/0x20)-1) ; 555 ptm->tm_mon = (uInt)((((uDate)&0x1E0)/0x20)-1) ;
556 ptm->tm_year = (uInt)(((uDate&0x0FE00)/0x0200)+1980) ; 556 ptm->tm_year = (uInt)(((uDate&0x0FE00)/0x0200)+1980) ;
557 557
558 ptm->tm_hour = (uInt) ((ulDosDate &0xF800)/0x800); 558 ptm->tm_hour = (uInt) ((ulDosDate &0xF800)/0x800);
559 ptm->tm_min = (uInt) ((ulDosDate&0x7E0)/0x20) ; 559 ptm->tm_min = (uInt) ((ulDosDate&0x7E0)/0x20) ;
560 ptm->tm_sec = (uInt) (2*(ulDosDate&0x1f)) ; 560 ptm->tm_sec = (uInt) (2*(ulDosDate&0x1f)) ;
561} 561}
562 562
563/* 563/*
564 Get Info about the current file in the zipfile, with internal only info 564 Get Info about the current file in the zipfile, with internal only info
565*/ 565*/
566local int unzlocal_GetCurrentFileInfoInternal OF((unzFile file, 566local int unzlocal_GetCurrentFileInfoInternal OF((unzFile file,
567 unz_file_info *pfile_info, 567 unz_file_info *pfile_info,
568 unz_file_info_internal 568 unz_file_info_internal
569 *pfile_info_internal, 569 *pfile_info_internal,
570 char *szFileName, 570 char *szFileName,
571 uLong fileNameBufferSize, 571 uLong fileNameBufferSize,
572 void *extraField, 572 void *extraField,
573 uLong extraFieldBufferSize, 573 uLong extraFieldBufferSize,
574 char *szComment, 574 char *szComment,
575 uLong commentBufferSize)); 575 uLong commentBufferSize));
576 576
577local int unzlocal_GetCurrentFileInfoInternal (file, 577local int unzlocal_GetCurrentFileInfoInternal (file,
578 pfile_info, 578 pfile_info,
579 pfile_info_internal, 579 pfile_info_internal,
580 szFileName, fileNameBufferSize, 580 szFileName, fileNameBufferSize,
581 extraField, extraFieldBufferSize, 581 extraField, extraFieldBufferSize,
582 szComment, commentBufferSize) 582 szComment, commentBufferSize)
583 unzFile file; 583 unzFile file;
584 unz_file_info *pfile_info; 584 unz_file_info *pfile_info;
585 unz_file_info_internal *pfile_info_internal; 585 unz_file_info_internal *pfile_info_internal;
586 char *szFileName; 586 char *szFileName;
587 uLong fileNameBufferSize; 587 uLong fileNameBufferSize;
588 void *extraField; 588 void *extraField;
589 uLong extraFieldBufferSize; 589 uLong extraFieldBufferSize;
590 char *szComment; 590 char *szComment;
591 uLong commentBufferSize; 591 uLong commentBufferSize;
592{ 592{
593 unz_s* s; 593 unz_s* s;
594 unz_file_info file_info; 594 unz_file_info file_info;
595 unz_file_info_internal file_info_internal; 595 unz_file_info_internal file_info_internal;
596 int err=UNZ_OK; 596 int err=UNZ_OK;
597 uLong uMagic; 597 uLong uMagic;
598 long lSeek=0; 598 long lSeek=0;
599 599
600 if (file==NULL) 600 if (file==NULL)
601 return UNZ_PARAMERROR; 601 return UNZ_PARAMERROR;
602 s=(unz_s*)file; 602 s=(unz_s*)file;
603 if (ZSEEK(s->z_filefunc, s->filestream, 603 if (ZSEEK(s->z_filefunc, s->filestream,
604 s->pos_in_central_dir+s->byte_before_the_zipfile, 604 s->pos_in_central_dir+s->byte_before_the_zipfile,
605 ZLIB_FILEFUNC_SEEK_SET)!=0) 605 ZLIB_FILEFUNC_SEEK_SET)!=0)
606 err=UNZ_ERRNO; 606 err=UNZ_ERRNO;
607 607
608 608
609 /* we check the magic */ 609 /* we check the magic */
610 if (err==UNZ_OK) 610 if (err==UNZ_OK)
611 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK) 611 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
612 err=UNZ_ERRNO; 612 err=UNZ_ERRNO;
613 else if (uMagic!=0x02014b50) 613 else if (uMagic!=0x02014b50)
614 err=UNZ_BADZIPFILE; 614 err=UNZ_BADZIPFILE;
615 615
616 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK) 616 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK)
617 err=UNZ_ERRNO; 617 err=UNZ_ERRNO;
618 618
619 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK) 619 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK)
620 err=UNZ_ERRNO; 620 err=UNZ_ERRNO;
621 621
622 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK) 622 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK)
623 err=UNZ_ERRNO; 623 err=UNZ_ERRNO;
624 624
625 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK) 625 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK)
626 err=UNZ_ERRNO; 626 err=UNZ_ERRNO;
627 627
628 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK) 628 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK)
629 err=UNZ_ERRNO; 629 err=UNZ_ERRNO;
630 630
631 unzlocal_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date); 631 unzlocal_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date);
632 632
633 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK) 633 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK)
634 err=UNZ_ERRNO; 634 err=UNZ_ERRNO;
635 635
636 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK) 636 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK)
637 err=UNZ_ERRNO; 637 err=UNZ_ERRNO;
638 638
639 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK) 639 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK)
640 err=UNZ_ERRNO; 640 err=UNZ_ERRNO;
641 641
642 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK) 642 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK)
643 err=UNZ_ERRNO; 643 err=UNZ_ERRNO;
644 644
645 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK) 645 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK)
646 err=UNZ_ERRNO; 646 err=UNZ_ERRNO;
647 647
648 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK) 648 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK)
649 err=UNZ_ERRNO; 649 err=UNZ_ERRNO;
650 650
651 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK) 651 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK)
652 err=UNZ_ERRNO; 652 err=UNZ_ERRNO;
653 653
654 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK) 654 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK)
655 err=UNZ_ERRNO; 655 err=UNZ_ERRNO;
656 656
657 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK) 657 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK)
658 err=UNZ_ERRNO; 658 err=UNZ_ERRNO;
659 659
660 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK) 660 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK)
661 err=UNZ_ERRNO; 661 err=UNZ_ERRNO;
662 662
663 lSeek+=file_info.size_filename; 663 lSeek+=file_info.size_filename;
664 if ((err==UNZ_OK) && (szFileName!=NULL)) 664 if ((err==UNZ_OK) && (szFileName!=NULL))
665 { 665 {
666 uLong uSizeRead ; 666 uLong uSizeRead ;
667 if (file_info.size_filename<fileNameBufferSize) 667 if (file_info.size_filename<fileNameBufferSize)
668 { 668 {
669 *(szFileName+file_info.size_filename)='\0'; 669 *(szFileName+file_info.size_filename)='\0';
670 uSizeRead = file_info.size_filename; 670 uSizeRead = file_info.size_filename;
671 } 671 }
672 else 672 else
673 uSizeRead = fileNameBufferSize; 673 uSizeRead = fileNameBufferSize;
674 674
675 if ((file_info.size_filename>0) && (fileNameBufferSize>0)) 675 if ((file_info.size_filename>0) && (fileNameBufferSize>0))
676 if (ZREAD(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead) 676 if (ZREAD(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead)
677 err=UNZ_ERRNO; 677 err=UNZ_ERRNO;
678 lSeek -= uSizeRead; 678 lSeek -= uSizeRead;
679 } 679 }
680 680
681 681
682 if ((err==UNZ_OK) && (extraField!=NULL)) 682 if ((err==UNZ_OK) && (extraField!=NULL))
683 { 683 {
684 uLong uSizeRead ; 684 uLong uSizeRead ;
685 if (file_info.size_file_extra<extraFieldBufferSize) 685 if (file_info.size_file_extra<extraFieldBufferSize)
686 uSizeRead = file_info.size_file_extra; 686 uSizeRead = file_info.size_file_extra;
687 else 687 else
688 uSizeRead = extraFieldBufferSize; 688 uSizeRead = extraFieldBufferSize;
689 689
690 if (lSeek!=0) 690 if (lSeek!=0)
691 if (ZSEEK(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) 691 if (ZSEEK(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
692 lSeek=0; 692 lSeek=0;
693 else 693 else
694 err=UNZ_ERRNO; 694 err=UNZ_ERRNO;
695 if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0)) 695 if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0))
696 if (ZREAD(s->z_filefunc, s->filestream,extraField,uSizeRead)!=uSizeRead) 696 if (ZREAD(s->z_filefunc, s->filestream,extraField,uSizeRead)!=uSizeRead)
697 err=UNZ_ERRNO; 697 err=UNZ_ERRNO;
698 lSeek += file_info.size_file_extra - uSizeRead; 698 lSeek += file_info.size_file_extra - uSizeRead;
699 } 699 }
700 else 700 else
701 lSeek+=file_info.size_file_extra; 701 lSeek+=file_info.size_file_extra;
702 702
703 703
704 if ((err==UNZ_OK) && (szComment!=NULL)) 704 if ((err==UNZ_OK) && (szComment!=NULL))
705 { 705 {
706 uLong uSizeRead ; 706 uLong uSizeRead ;
707 if (file_info.size_file_comment<commentBufferSize) 707 if (file_info.size_file_comment<commentBufferSize)
708 { 708 {
709 *(szComment+file_info.size_file_comment)='\0'; 709 *(szComment+file_info.size_file_comment)='\0';
710 uSizeRead = file_info.size_file_comment; 710 uSizeRead = file_info.size_file_comment;
711 } 711 }
712 else 712 else
713 uSizeRead = commentBufferSize; 713 uSizeRead = commentBufferSize;
714 714
715 if (lSeek!=0) 715 if (lSeek!=0)
716 if (ZSEEK(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) 716 if (ZSEEK(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
717 lSeek=0; 717 lSeek=0;
718 else 718 else
719 err=UNZ_ERRNO; 719 err=UNZ_ERRNO;
720 if ((file_info.size_file_comment>0) && (commentBufferSize>0)) 720 if ((file_info.size_file_comment>0) && (commentBufferSize>0))
721 if (ZREAD(s->z_filefunc, s->filestream,szComment,uSizeRead)!=uSizeRead) 721 if (ZREAD(s->z_filefunc, s->filestream,szComment,uSizeRead)!=uSizeRead)
722 err=UNZ_ERRNO; 722 err=UNZ_ERRNO;
723 lSeek+=file_info.size_file_comment - uSizeRead; 723 lSeek+=file_info.size_file_comment - uSizeRead;
724 } 724 }
725 else 725 else
726 lSeek+=file_info.size_file_comment; 726 lSeek+=file_info.size_file_comment;
727 727
728 if ((err==UNZ_OK) && (pfile_info!=NULL)) 728 if ((err==UNZ_OK) && (pfile_info!=NULL))
729 *pfile_info=file_info; 729 *pfile_info=file_info;
730 730
731 if ((err==UNZ_OK) && (pfile_info_internal!=NULL)) 731 if ((err==UNZ_OK) && (pfile_info_internal!=NULL))
732 *pfile_info_internal=file_info_internal; 732 *pfile_info_internal=file_info_internal;
733 733
734 return err; 734 return err;
735} 735}
736 736
737 737
738 738
739/* 739/*
740 Write info about the ZipFile in the *pglobal_info structure. 740 Write info about the ZipFile in the *pglobal_info structure.
741 No preparation of the structure is needed 741 No preparation of the structure is needed
742 return UNZ_OK if there is no problem. 742 return UNZ_OK if there is no problem.
743*/ 743*/
744extern int ZEXPORT unzGetCurrentFileInfo (file, 744extern int ZEXPORT unzGetCurrentFileInfo (file,
745 pfile_info, 745 pfile_info,
746 szFileName, fileNameBufferSize, 746 szFileName, fileNameBufferSize,
747 extraField, extraFieldBufferSize, 747 extraField, extraFieldBufferSize,
748 szComment, commentBufferSize) 748 szComment, commentBufferSize)
749 unzFile file; 749 unzFile file;
750 unz_file_info *pfile_info; 750 unz_file_info *pfile_info;
751 char *szFileName; 751 char *szFileName;
752 uLong fileNameBufferSize; 752 uLong fileNameBufferSize;
753 void *extraField; 753 void *extraField;
754 uLong extraFieldBufferSize; 754 uLong extraFieldBufferSize;
755 char *szComment; 755 char *szComment;
756 uLong commentBufferSize; 756 uLong commentBufferSize;
757{ 757{
758 return unzlocal_GetCurrentFileInfoInternal(file,pfile_info,NULL, 758 return unzlocal_GetCurrentFileInfoInternal(file,pfile_info,NULL,
759 szFileName,fileNameBufferSize, 759 szFileName,fileNameBufferSize,
760 extraField,extraFieldBufferSize, 760 extraField,extraFieldBufferSize,
761 szComment,commentBufferSize); 761 szComment,commentBufferSize);
762} 762}
763 763
764/* 764/*
765 Set the current file of the zipfile to the first file. 765 Set the current file of the zipfile to the first file.
766 return UNZ_OK if there is no problem 766 return UNZ_OK if there is no problem
767*/ 767*/
768extern int ZEXPORT unzGoToFirstFile (file) 768extern int ZEXPORT unzGoToFirstFile (file)
769 unzFile file; 769 unzFile file;
770{ 770{
771 int err=UNZ_OK; 771 int err=UNZ_OK;
772 unz_s* s; 772 unz_s* s;
773 if (file==NULL) 773 if (file==NULL)
774 return UNZ_PARAMERROR; 774 return UNZ_PARAMERROR;
775 s=(unz_s*)file; 775 s=(unz_s*)file;
776 s->pos_in_central_dir=s->offset_central_dir; 776 s->pos_in_central_dir=s->offset_central_dir;
777 s->num_file=0; 777 s->num_file=0;
778 err=unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info, 778 err=unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
779 &s->cur_file_info_internal, 779 &s->cur_file_info_internal,
780 NULL,0,NULL,0,NULL,0); 780 NULL,0,NULL,0,NULL,0);
781 s->current_file_ok = (err == UNZ_OK); 781 s->current_file_ok = (err == UNZ_OK);
782 return err; 782 return err;
783} 783}
784 784
785/* 785/*
786 Set the current file of the zipfile to the next file. 786 Set the current file of the zipfile to the next file.
787 return UNZ_OK if there is no problem 787 return UNZ_OK if there is no problem
788 return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest. 788 return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest.
789*/ 789*/
790extern int ZEXPORT unzGoToNextFile (file) 790extern int ZEXPORT unzGoToNextFile (file)
791 unzFile file; 791 unzFile file;
792{ 792{
793 unz_s* s; 793 unz_s* s;
794 int err; 794 int err;
795 795
796 if (file==NULL) 796 if (file==NULL)
797 return UNZ_PARAMERROR; 797 return UNZ_PARAMERROR;
798 s=(unz_s*)file; 798 s=(unz_s*)file;
799 if (!s->current_file_ok) 799 if (!s->current_file_ok)
800 return UNZ_END_OF_LIST_OF_FILE; 800 return UNZ_END_OF_LIST_OF_FILE;
801 if (s->num_file+1==s->gi.number_entry) 801 if (s->num_file+1==s->gi.number_entry)
802 return UNZ_END_OF_LIST_OF_FILE; 802 return UNZ_END_OF_LIST_OF_FILE;
803 803
804 s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename + 804 s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename +
805 s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment ; 805 s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment ;
806 s->num_file++; 806 s->num_file++;
807 err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info, 807 err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
808 &s->cur_file_info_internal, 808 &s->cur_file_info_internal,
809 NULL,0,NULL,0,NULL,0); 809 NULL,0,NULL,0,NULL,0);
810 s->current_file_ok = (err == UNZ_OK); 810 s->current_file_ok = (err == UNZ_OK);
811 return err; 811 return err;
812} 812}
813 813
814 814
815/* 815/*
816 Try locate the file szFileName in the zipfile. 816 Try locate the file szFileName in the zipfile.
817 For the iCaseSensitivity signification, see unzipStringFileNameCompare 817 For the iCaseSensitivity signification, see unzipStringFileNameCompare
818 818
819 return value : 819 return value :
820 UNZ_OK if the file is found. It becomes the current file. 820 UNZ_OK if the file is found. It becomes the current file.
821 UNZ_END_OF_LIST_OF_FILE if the file is not found 821 UNZ_END_OF_LIST_OF_FILE if the file is not found
822*/ 822*/
823extern int ZEXPORT unzLocateFile (file, szFileName, iCaseSensitivity) 823extern int ZEXPORT unzLocateFile (file, szFileName, iCaseSensitivity)
824 unzFile file; 824 unzFile file;
825 const char *szFileName; 825 const char *szFileName;
826 int iCaseSensitivity; 826 int iCaseSensitivity;
827{ 827{
828 unz_s* s; 828 unz_s* s;
829 int err; 829 int err;
830 830
831 /* We remember the 'current' position in the file so that we can jump 831 /* We remember the 'current' position in the file so that we can jump
832 * back there if we fail. 832 * back there if we fail.
833 */ 833 */
834 unz_file_info cur_file_infoSaved; 834 unz_file_info cur_file_infoSaved;
835 unz_file_info_internal cur_file_info_internalSaved; 835 unz_file_info_internal cur_file_info_internalSaved;
836 uLong num_fileSaved; 836 uLong num_fileSaved;
837 uLong pos_in_central_dirSaved; 837 uLong pos_in_central_dirSaved;
838 838
839 839
840 if (file==NULL) 840 if (file==NULL)
841 return UNZ_PARAMERROR; 841 return UNZ_PARAMERROR;
842 842
843 if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP) 843 if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP)
844 return UNZ_PARAMERROR; 844 return UNZ_PARAMERROR;
845 845
846 s=(unz_s*)file; 846 s=(unz_s*)file;
847 if (!s->current_file_ok) 847 if (!s->current_file_ok)
848 return UNZ_END_OF_LIST_OF_FILE; 848 return UNZ_END_OF_LIST_OF_FILE;
849 849
850 /* Save the current state */ 850 /* Save the current state */
851 num_fileSaved = s->num_file; 851 num_fileSaved = s->num_file;
852 pos_in_central_dirSaved = s->pos_in_central_dir; 852 pos_in_central_dirSaved = s->pos_in_central_dir;
853 cur_file_infoSaved = s->cur_file_info; 853 cur_file_infoSaved = s->cur_file_info;
854 cur_file_info_internalSaved = s->cur_file_info_internal; 854 cur_file_info_internalSaved = s->cur_file_info_internal;
855 855
856 err = unzGoToFirstFile(file); 856 err = unzGoToFirstFile(file);
857 857
858 while (err == UNZ_OK) 858 while (err == UNZ_OK)
859 { 859 {
860 char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1]; 860 char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1];
861 err = unzGetCurrentFileInfo(file,NULL, 861 err = unzGetCurrentFileInfo(file,NULL,
862 szCurrentFileName,sizeof(szCurrentFileName)-1, 862 szCurrentFileName,sizeof(szCurrentFileName)-1,
863 NULL,0,NULL,0); 863 NULL,0,NULL,0);
864 if (err == UNZ_OK) 864 if (err == UNZ_OK)
865 { 865 {
866 if (unzStringFileNameCompare(szCurrentFileName, 866 if (unzStringFileNameCompare(szCurrentFileName,
867 szFileName,iCaseSensitivity)==0) 867 szFileName,iCaseSensitivity)==0)
868 return UNZ_OK; 868 return UNZ_OK;
869 err = unzGoToNextFile(file); 869 err = unzGoToNextFile(file);
870 } 870 }
871 } 871 }
872 872
873 /* We failed, so restore the state of the 'current file' to where we 873 /* We failed, so restore the state of the 'current file' to where we
874 * were. 874 * were.
875 */ 875 */
876 s->num_file = num_fileSaved ; 876 s->num_file = num_fileSaved ;
877 s->pos_in_central_dir = pos_in_central_dirSaved ; 877 s->pos_in_central_dir = pos_in_central_dirSaved ;
878 s->cur_file_info = cur_file_infoSaved; 878 s->cur_file_info = cur_file_infoSaved;
879 s->cur_file_info_internal = cur_file_info_internalSaved; 879 s->cur_file_info_internal = cur_file_info_internalSaved;
880 return err; 880 return err;
881} 881}
882 882
883 883
884/* 884/*
885/////////////////////////////////////////// 885///////////////////////////////////////////
886// Contributed by Ryan Haksi (mailto://cryogen@infoserve.net) 886// Contributed by Ryan Haksi (mailto://cryogen@infoserve.net)
887// I need random access 887// I need random access
888// 888//
889// Further optimization could be realized by adding an ability 889// Further optimization could be realized by adding an ability
890// to cache the directory in memory. The goal being a single 890// to cache the directory in memory. The goal being a single
891// comprehensive file read to put the file I need in a memory. 891// comprehensive file read to put the file I need in a memory.
892*/ 892*/
893 893
894/* 894/*
895typedef struct unz_file_pos_s 895typedef struct unz_file_pos_s
896{ 896{
897 uLong pos_in_zip_directory; // offset in file 897 uLong pos_in_zip_directory; // offset in file
898 uLong num_of_file; // # of file 898 uLong num_of_file; // # of file
899} unz_file_pos; 899} unz_file_pos;
900*/ 900*/
901 901
902extern int ZEXPORT unzGetFilePos(file, file_pos) 902extern int ZEXPORT unzGetFilePos(file, file_pos)
903 unzFile file; 903 unzFile file;
904 unz_file_pos* file_pos; 904 unz_file_pos* file_pos;
905{ 905{
906 unz_s* s; 906 unz_s* s;
907 907
908 if (file==NULL || file_pos==NULL) 908 if (file==NULL || file_pos==NULL)
909 return UNZ_PARAMERROR; 909 return UNZ_PARAMERROR;
910 s=(unz_s*)file; 910 s=(unz_s*)file;
911 if (!s->current_file_ok) 911 if (!s->current_file_ok)
912 return UNZ_END_OF_LIST_OF_FILE; 912 return UNZ_END_OF_LIST_OF_FILE;
913 913
914 file_pos->pos_in_zip_directory = s->pos_in_central_dir; 914 file_pos->pos_in_zip_directory = s->pos_in_central_dir;
915 file_pos->num_of_file = s->num_file; 915 file_pos->num_of_file = s->num_file;
916 916
917 return UNZ_OK; 917 return UNZ_OK;
918} 918}
919 919
920extern int ZEXPORT unzGoToFilePos(file, file_pos) 920extern int ZEXPORT unzGoToFilePos(file, file_pos)
921 unzFile file; 921 unzFile file;
922 unz_file_pos* file_pos; 922 unz_file_pos* file_pos;
923{ 923{
924 unz_s* s; 924 unz_s* s;
925 int err; 925 int err;
926 926
927 if (file==NULL || file_pos==NULL) 927 if (file==NULL || file_pos==NULL)
928 return UNZ_PARAMERROR; 928 return UNZ_PARAMERROR;
929 s=(unz_s*)file; 929 s=(unz_s*)file;
930 930
931 /* jump to the right spot */ 931 /* jump to the right spot */
932 s->pos_in_central_dir = file_pos->pos_in_zip_directory; 932 s->pos_in_central_dir = file_pos->pos_in_zip_directory;
933 s->num_file = file_pos->num_of_file; 933 s->num_file = file_pos->num_of_file;
934 934
935 /* set the current file */ 935 /* set the current file */
936 err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info, 936 err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
937 &s->cur_file_info_internal, 937 &s->cur_file_info_internal,
938 NULL,0,NULL,0,NULL,0); 938 NULL,0,NULL,0,NULL,0);
939 /* return results */ 939 /* return results */
940 s->current_file_ok = (err == UNZ_OK); 940 s->current_file_ok = (err == UNZ_OK);
941 return err; 941 return err;
942} 942}
943 943
944/* 944/*
945// Unzip Helper Functions - should be here? 945// Unzip Helper Functions - should be here?
946/////////////////////////////////////////// 946///////////////////////////////////////////
947*/ 947*/
948 948
949/* 949/*
950 Read the local header of the current zipfile 950 Read the local header of the current zipfile
951 Check the coherency of the local header and info in the end of central 951 Check the coherency of the local header and info in the end of central
952 directory about this file 952 directory about this file
953 store in *piSizeVar the size of extra info in local header 953 store in *piSizeVar the size of extra info in local header
954 (filename and size of extra field data) 954 (filename and size of extra field data)
955*/ 955*/
956local int unzlocal_CheckCurrentFileCoherencyHeader (s,piSizeVar, 956local int unzlocal_CheckCurrentFileCoherencyHeader (s,piSizeVar,
957 poffset_local_extrafield, 957 poffset_local_extrafield,
958 psize_local_extrafield) 958 psize_local_extrafield)
959 unz_s* s; 959 unz_s* s;
960 uInt* piSizeVar; 960 uInt* piSizeVar;
961 uLong *poffset_local_extrafield; 961 uLong *poffset_local_extrafield;
962 uInt *psize_local_extrafield; 962 uInt *psize_local_extrafield;
963{ 963{
964 uLong uMagic,uData,uFlags; 964 uLong uMagic,uData,uFlags;
965 uLong size_filename; 965 uLong size_filename;
966 uLong size_extra_field; 966 uLong size_extra_field;
967 int err=UNZ_OK; 967 int err=UNZ_OK;
968 968
969 *piSizeVar = 0; 969 *piSizeVar = 0;
970 *poffset_local_extrafield = 0; 970 *poffset_local_extrafield = 0;
971 *psize_local_extrafield = 0; 971 *psize_local_extrafield = 0;
972 972
973 if (ZSEEK(s->z_filefunc, s->filestream,s->cur_file_info_internal.offset_curfile + 973 if (ZSEEK(s->z_filefunc, s->filestream,s->cur_file_info_internal.offset_curfile +
974 s->byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0) 974 s->byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0)
975 return UNZ_ERRNO; 975 return UNZ_ERRNO;
976 976
977 977
978 if (err==UNZ_OK) 978 if (err==UNZ_OK)
979 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK) 979 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
980 err=UNZ_ERRNO; 980 err=UNZ_ERRNO;
981 else if (uMagic!=0x04034b50) 981 else if (uMagic!=0x04034b50)
982 err=UNZ_BADZIPFILE; 982 err=UNZ_BADZIPFILE;
983 983
984 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) 984 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK)
985 err=UNZ_ERRNO; 985 err=UNZ_ERRNO;
986/* 986/*
987 else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion)) 987 else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion))
988 err=UNZ_BADZIPFILE; 988 err=UNZ_BADZIPFILE;
989*/ 989*/
990 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK) 990 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK)
991 err=UNZ_ERRNO; 991 err=UNZ_ERRNO;
992 992
993 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) 993 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK)
994 err=UNZ_ERRNO; 994 err=UNZ_ERRNO;
995 else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compression_method)) 995 else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compression_method))
996 err=UNZ_BADZIPFILE; 996 err=UNZ_BADZIPFILE;
997 997
998 if ((err==UNZ_OK) && (s->cur_file_info.compression_method!=0) && 998 if ((err==UNZ_OK) && (s->cur_file_info.compression_method!=0) &&
999 (s->cur_file_info.compression_method!=Z_DEFLATED)) 999 (s->cur_file_info.compression_method!=Z_DEFLATED))
1000 err=UNZ_BADZIPFILE; 1000 err=UNZ_BADZIPFILE;
1001 1001
1002 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */ 1002 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */
1003 err=UNZ_ERRNO; 1003 err=UNZ_ERRNO;
1004 1004
1005 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* crc */ 1005 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* crc */
1006 err=UNZ_ERRNO; 1006 err=UNZ_ERRNO;
1007 else if ((err==UNZ_OK) && (uData!=s->cur_file_info.crc) && 1007 else if ((err==UNZ_OK) && (uData!=s->cur_file_info.crc) &&
1008 ((uFlags & 8)==0)) 1008 ((uFlags & 8)==0))
1009 err=UNZ_BADZIPFILE; 1009 err=UNZ_BADZIPFILE;
1010 1010
1011 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */ 1011 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */
1012 err=UNZ_ERRNO; 1012 err=UNZ_ERRNO;
1013 else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) && 1013 else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) &&
1014 ((uFlags & 8)==0)) 1014 ((uFlags & 8)==0))
1015 err=UNZ_BADZIPFILE; 1015 err=UNZ_BADZIPFILE;
1016 1016
1017 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */ 1017 if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */
1018 err=UNZ_ERRNO; 1018 err=UNZ_ERRNO;
1019 else if ((err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) && 1019 else if ((err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) &&
1020 ((uFlags & 8)==0)) 1020 ((uFlags & 8)==0))
1021 err=UNZ_BADZIPFILE; 1021 err=UNZ_BADZIPFILE;
1022 1022
1023 1023
1024 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&size_filename) != UNZ_OK) 1024 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&size_filename) != UNZ_OK)
1025 err=UNZ_ERRNO; 1025 err=UNZ_ERRNO;
1026 else if ((err==UNZ_OK) && (size_filename!=s->cur_file_info.size_filename)) 1026 else if ((err==UNZ_OK) && (size_filename!=s->cur_file_info.size_filename))
1027 err=UNZ_BADZIPFILE; 1027 err=UNZ_BADZIPFILE;
1028 1028
1029 *piSizeVar += (uInt)size_filename; 1029 *piSizeVar += (uInt)size_filename;
1030 1030
1031 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&size_extra_field) != UNZ_OK) 1031 if (unzlocal_getShort(&s->z_filefunc, s->filestream,&size_extra_field) != UNZ_OK)
1032 err=UNZ_ERRNO; 1032 err=UNZ_ERRNO;
1033 *poffset_local_extrafield= s->cur_file_info_internal.offset_curfile + 1033 *poffset_local_extrafield= s->cur_file_info_internal.offset_curfile +
1034 SIZEZIPLOCALHEADER + size_filename; 1034 SIZEZIPLOCALHEADER + size_filename;
1035 *psize_local_extrafield = (uInt)size_extra_field; 1035 *psize_local_extrafield = (uInt)size_extra_field;
1036 1036
1037 *piSizeVar += (uInt)size_extra_field; 1037 *piSizeVar += (uInt)size_extra_field;
1038 1038
1039 return err; 1039 return err;
1040} 1040}
1041 1041
1042/* 1042/*
1043 Open for reading data the current file in the zipfile. 1043 Open for reading data the current file in the zipfile.
1044 If there is no error and the file is opened, the return value is UNZ_OK. 1044 If there is no error and the file is opened, the return value is UNZ_OK.
1045*/ 1045*/
1046extern int ZEXPORT unzOpenCurrentFile3 (file, method, level, raw, password) 1046extern int ZEXPORT unzOpenCurrentFile3 (file, method, level, raw, password)
1047 unzFile file; 1047 unzFile file;
1048 int* method; 1048 int* method;
1049 int* level; 1049 int* level;
1050 int raw; 1050 int raw;
1051 const char* password; 1051 const char* password;
1052{ 1052{
1053 int err=UNZ_OK; 1053 int err=UNZ_OK;
1054 uInt iSizeVar; 1054 uInt iSizeVar;
1055 unz_s* s; 1055 unz_s* s;
1056 file_in_zip_read_info_s* pfile_in_zip_read_info; 1056 file_in_zip_read_info_s* pfile_in_zip_read_info;
1057 uLong offset_local_extrafield; /* offset of the local extra field */ 1057 uLong offset_local_extrafield; /* offset of the local extra field */
1058 uInt size_local_extrafield; /* size of the local extra field */ 1058 uInt size_local_extrafield; /* size of the local extra field */
1059 #ifndef NOUNCRYPT 1059# ifndef NOUNCRYPT
1060 char source[12]; 1060 char source[12];
1061 #else 1061# else
1062 if (password != NULL) 1062 if (password != NULL)
1063 return UNZ_PARAMERROR; 1063 return UNZ_PARAMERROR;
1064 #endif 1064# endif
1065 1065
1066 if (file==NULL) 1066 if (file==NULL)
1067 return UNZ_PARAMERROR; 1067 return UNZ_PARAMERROR;
1068 s=(unz_s*)file; 1068 s=(unz_s*)file;
1069 if (!s->current_file_ok) 1069 if (!s->current_file_ok)
1070 return UNZ_PARAMERROR; 1070 return UNZ_PARAMERROR;
1071 1071
1072 if (s->pfile_in_zip_read != NULL) 1072 if (s->pfile_in_zip_read != NULL)
1073 unzCloseCurrentFile(file); 1073 unzCloseCurrentFile(file);
1074 1074
1075 if (unzlocal_CheckCurrentFileCoherencyHeader(s,&iSizeVar, 1075 if (unzlocal_CheckCurrentFileCoherencyHeader(s,&iSizeVar,
1076 &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK) 1076 &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK)
1077 return UNZ_BADZIPFILE; 1077 return UNZ_BADZIPFILE;
1078 1078
1079 pfile_in_zip_read_info = (file_in_zip_read_info_s*) 1079 pfile_in_zip_read_info = (file_in_zip_read_info_s*)
1080 ALLOC(sizeof(file_in_zip_read_info_s)); 1080 ALLOC(sizeof(file_in_zip_read_info_s));
1081 if (pfile_in_zip_read_info==NULL) 1081 if (pfile_in_zip_read_info==NULL)
1082 return UNZ_INTERNALERROR; 1082 return UNZ_INTERNALERROR;
1083 1083
1084 pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE); 1084 pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE);
1085 pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield; 1085 pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield;
1086 pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield; 1086 pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield;
1087 pfile_in_zip_read_info->pos_local_extrafield=0; 1087 pfile_in_zip_read_info->pos_local_extrafield=0;
1088 pfile_in_zip_read_info->raw=raw; 1088 pfile_in_zip_read_info->raw=raw;
1089 1089
1090 if (pfile_in_zip_read_info->read_buffer==NULL) 1090 if (pfile_in_zip_read_info->read_buffer==NULL)
1091 { 1091 {
1092 TRYFREE(pfile_in_zip_read_info); 1092 TRYFREE(pfile_in_zip_read_info);
1093 return UNZ_INTERNALERROR; 1093 return UNZ_INTERNALERROR;
1094 } 1094 }
1095 1095
1096 pfile_in_zip_read_info->stream_initialised=0; 1096 pfile_in_zip_read_info->stream_initialised=0;
1097 1097
1098 if (method!=NULL) 1098 if (method!=NULL)
1099 *method = (int)s->cur_file_info.compression_method; 1099 *method = (int)s->cur_file_info.compression_method;
1100 1100
1101 if (level!=NULL) 1101 if (level!=NULL)
1102 { 1102 {
1103 *level = 6; 1103 *level = 6;
1104 switch (s->cur_file_info.flag & 0x06) 1104 switch (s->cur_file_info.flag & 0x06)
1105 { 1105 {
1106 case 6 : *level = 1; break; 1106 case 6 : *level = 1; break;
1107 case 4 : *level = 2; break; 1107 case 4 : *level = 2; break;
1108 case 2 : *level = 9; break; 1108 case 2 : *level = 9; break;
1109 } 1109 }
1110 } 1110 }
1111 1111
1112 if ((s->cur_file_info.compression_method!=0) && 1112 if ((s->cur_file_info.compression_method!=0) &&
1113 (s->cur_file_info.compression_method!=Z_DEFLATED)) 1113 (s->cur_file_info.compression_method!=Z_DEFLATED))
1114 err=UNZ_BADZIPFILE; 1114 err=UNZ_BADZIPFILE;
1115 1115
1116 pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc; 1116 pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc;
1117 pfile_in_zip_read_info->crc32=0; 1117 pfile_in_zip_read_info->crc32=0;
1118 pfile_in_zip_read_info->compression_method = 1118 pfile_in_zip_read_info->compression_method =
1119 s->cur_file_info.compression_method; 1119 s->cur_file_info.compression_method;
1120 pfile_in_zip_read_info->filestream=s->filestream; 1120 pfile_in_zip_read_info->filestream=s->filestream;
1121 pfile_in_zip_read_info->z_filefunc=s->z_filefunc; 1121 pfile_in_zip_read_info->z_filefunc=s->z_filefunc;
1122 pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile; 1122 pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile;
1123 1123
1124 pfile_in_zip_read_info->stream.total_out = 0; 1124 pfile_in_zip_read_info->stream.total_out = 0;
1125 1125
1126 if ((s->cur_file_info.compression_method==Z_DEFLATED) && 1126 if ((s->cur_file_info.compression_method==Z_DEFLATED) &&
1127 (!raw)) 1127 (!raw))
1128 { 1128 {
1129 pfile_in_zip_read_info->stream.zalloc = (alloc_func)0; 1129 pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
1130 pfile_in_zip_read_info->stream.zfree = (free_func)0; 1130 pfile_in_zip_read_info->stream.zfree = (free_func)0;
1131 pfile_in_zip_read_info->stream.opaque = (voidpf)0; 1131 pfile_in_zip_read_info->stream.opaque = (voidpf)0;
1132 pfile_in_zip_read_info->stream.next_in = (voidpf)0; 1132 pfile_in_zip_read_info->stream.next_in = (voidpf)0;
1133 pfile_in_zip_read_info->stream.avail_in = 0; 1133 pfile_in_zip_read_info->stream.avail_in = 0;
1134 1134
1135 err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS); 1135 err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
1136 if (err == Z_OK) 1136 if (err == Z_OK)
1137 pfile_in_zip_read_info->stream_initialised=1; 1137 pfile_in_zip_read_info->stream_initialised=1;
1138 else 1138 else
1139 return err; 1139 return err;
1140 /* windowBits is passed < 0 to tell that there is no zlib header. 1140 /* windowBits is passed < 0 to tell that there is no zlib header.
1141 * Note that in this case inflate *requires* an extra "dummy" byte 1141 * Note that in this case inflate *requires* an extra "dummy" byte
1142 * after the compressed stream in order to complete decompression and 1142 * after the compressed stream in order to complete decompression and
1143 * return Z_STREAM_END. 1143 * return Z_STREAM_END.
1144 * In unzip, i don't wait absolutely Z_STREAM_END because I known the 1144 * In unzip, i don't wait absolutely Z_STREAM_END because I known the
1145 * size of both compressed and uncompressed data 1145 * size of both compressed and uncompressed data
1146 */ 1146 */
1147 } 1147 }
1148 pfile_in_zip_read_info->rest_read_compressed = 1148 pfile_in_zip_read_info->rest_read_compressed =
1149 s->cur_file_info.compressed_size ; 1149 s->cur_file_info.compressed_size ;
1150 pfile_in_zip_read_info->rest_read_uncompressed = 1150 pfile_in_zip_read_info->rest_read_uncompressed =
1151 s->cur_file_info.uncompressed_size ; 1151 s->cur_file_info.uncompressed_size ;
1152 1152
1153 1153
1154 pfile_in_zip_read_info->pos_in_zipfile = 1154 pfile_in_zip_read_info->pos_in_zipfile =
1155 s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + 1155 s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER +
1156 iSizeVar; 1156 iSizeVar;
1157 1157
1158 pfile_in_zip_read_info->stream.avail_in = (uInt)0; 1158 pfile_in_zip_read_info->stream.avail_in = (uInt)0;
1159 1159
1160 s->pfile_in_zip_read = pfile_in_zip_read_info; 1160 s->pfile_in_zip_read = pfile_in_zip_read_info;
1161 1161
1162 #ifndef NOUNCRYPT 1162# ifndef NOUNCRYPT
1163 if (password != NULL) 1163 if (password != NULL)
1164 { 1164 {
1165 int i; 1165 int i;
1166 s->pcrc_32_tab = get_crc_table(); 1166 s->pcrc_32_tab = get_crc_table();
1167 init_keys(password,s->keys,s->pcrc_32_tab); 1167 init_keys(password,s->keys,s->pcrc_32_tab);
1168 if (ZSEEK(s->z_filefunc, s->filestream, 1168 if (ZSEEK(s->z_filefunc, s->filestream,
1169 s->pfile_in_zip_read->pos_in_zipfile + 1169 s->pfile_in_zip_read->pos_in_zipfile +
1170 s->pfile_in_zip_read->byte_before_the_zipfile, 1170 s->pfile_in_zip_read->byte_before_the_zipfile,
1171 SEEK_SET)!=0) 1171 SEEK_SET)!=0)
1172 return UNZ_INTERNALERROR; 1172 return UNZ_INTERNALERROR;
1173 if(ZREAD(s->z_filefunc, s->filestream,source, 12)<12) 1173 if(ZREAD(s->z_filefunc, s->filestream,source, 12)<12)
1174 return UNZ_INTERNALERROR; 1174 return UNZ_INTERNALERROR;
1175 1175
1176 for (i = 0; i<12; i++) 1176 for (i = 0; i<12; i++)
1177 zdecode(s->keys,s->pcrc_32_tab,source[i]); 1177 zdecode(s->keys,s->pcrc_32_tab,source[i]);
1178 1178
1179 s->pfile_in_zip_read->pos_in_zipfile+=12; 1179 s->pfile_in_zip_read->pos_in_zipfile+=12;
1180 s->encrypted=1; 1180 s->encrypted=1;
1181 } 1181 }
1182 #endif 1182# endif
1183 1183
1184 1184
1185 return UNZ_OK; 1185 return UNZ_OK;
1186} 1186}
1187 1187
1188extern int ZEXPORT unzOpenCurrentFile (file) 1188extern int ZEXPORT unzOpenCurrentFile (file)
1189 unzFile file; 1189 unzFile file;
1190{ 1190{
1191 return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL); 1191 return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL);
1192} 1192}
1193 1193
1194extern int ZEXPORT unzOpenCurrentFilePassword (file, password) 1194extern int ZEXPORT unzOpenCurrentFilePassword (file, password)
1195 unzFile file; 1195 unzFile file;
1196 const char* password; 1196 const char* password;
1197{ 1197{
1198 return unzOpenCurrentFile3(file, NULL, NULL, 0, password); 1198 return unzOpenCurrentFile3(file, NULL, NULL, 0, password);
1199} 1199}
1200 1200
1201extern int ZEXPORT unzOpenCurrentFile2 (file,method,level,raw) 1201extern int ZEXPORT unzOpenCurrentFile2 (file,method,level,raw)
1202 unzFile file; 1202 unzFile file;
1203 int* method; 1203 int* method;
1204 int* level; 1204 int* level;
1205 int raw; 1205 int raw;
1206{ 1206{
1207 return unzOpenCurrentFile3(file, method, level, raw, NULL); 1207 return unzOpenCurrentFile3(file, method, level, raw, NULL);
1208} 1208}
1209 1209
1210/* 1210/*
1211 Read bytes from the current file. 1211 Read bytes from the current file.
1212 buf contain buffer where data must be copied 1212 buf contain buffer where data must be copied
1213 len the size of buf. 1213 len the size of buf.
1214 1214
1215 return the number of byte copied if somes bytes are copied 1215 return the number of byte copied if somes bytes are copied
1216 return 0 if the end of file was reached 1216 return 0 if the end of file was reached
1217 return <0 with error code if there is an error 1217 return <0 with error code if there is an error
1218 (UNZ_ERRNO for IO error, or zLib error for uncompress error) 1218 (UNZ_ERRNO for IO error, or zLib error for uncompress error)
1219*/ 1219*/
1220extern int ZEXPORT unzReadCurrentFile (file, buf, len) 1220extern int ZEXPORT unzReadCurrentFile (file, buf, len)
1221 unzFile file; 1221 unzFile file;
1222 voidp buf; 1222 voidp buf;
1223 unsigned len; 1223 unsigned len;
1224{ 1224{
1225 int err=UNZ_OK; 1225 int err=UNZ_OK;
1226 uInt iRead = 0; 1226 uInt iRead = 0;
1227 unz_s* s; 1227 unz_s* s;
1228 file_in_zip_read_info_s* pfile_in_zip_read_info; 1228 file_in_zip_read_info_s* pfile_in_zip_read_info;
1229 if (file==NULL) 1229 if (file==NULL)
1230 return UNZ_PARAMERROR; 1230 return UNZ_PARAMERROR;
1231 s=(unz_s*)file; 1231 s=(unz_s*)file;
1232 pfile_in_zip_read_info=s->pfile_in_zip_read; 1232 pfile_in_zip_read_info=s->pfile_in_zip_read;
1233 1233
1234 if (pfile_in_zip_read_info==NULL) 1234 if (pfile_in_zip_read_info==NULL)
1235 return UNZ_PARAMERROR; 1235 return UNZ_PARAMERROR;
1236 1236
1237 1237
1238 if ((pfile_in_zip_read_info->read_buffer == NULL)) 1238 if ((pfile_in_zip_read_info->read_buffer == NULL))
1239 return UNZ_END_OF_LIST_OF_FILE; 1239 return UNZ_END_OF_LIST_OF_FILE;
1240 if (len==0) 1240 if (len==0)
1241 return 0; 1241 return 0;
1242 1242
1243 pfile_in_zip_read_info->stream.next_out = (Bytef*)buf; 1243 pfile_in_zip_read_info->stream.next_out = (Bytef*)buf;
1244 1244
1245 pfile_in_zip_read_info->stream.avail_out = (uInt)len; 1245 pfile_in_zip_read_info->stream.avail_out = (uInt)len;
1246 1246
1247 if (len>pfile_in_zip_read_info->rest_read_uncompressed) 1247 if (len>pfile_in_zip_read_info->rest_read_uncompressed)
1248 pfile_in_zip_read_info->stream.avail_out = 1248 pfile_in_zip_read_info->stream.avail_out =
1249 (uInt)pfile_in_zip_read_info->rest_read_uncompressed; 1249 (uInt)pfile_in_zip_read_info->rest_read_uncompressed;
1250 1250
1251 while (pfile_in_zip_read_info->stream.avail_out>0) 1251 while (pfile_in_zip_read_info->stream.avail_out>0)
1252 { 1252 {
1253 if ((pfile_in_zip_read_info->stream.avail_in==0) && 1253 if ((pfile_in_zip_read_info->stream.avail_in==0) &&
1254 (pfile_in_zip_read_info->rest_read_compressed>0)) 1254 (pfile_in_zip_read_info->rest_read_compressed>0))
1255 { 1255 {
1256 uInt uReadThis = UNZ_BUFSIZE; 1256 uInt uReadThis = UNZ_BUFSIZE;
1257 if (pfile_in_zip_read_info->rest_read_compressed<uReadThis) 1257 if (pfile_in_zip_read_info->rest_read_compressed<uReadThis)
1258 uReadThis = (uInt)pfile_in_zip_read_info->rest_read_compressed; 1258 uReadThis = (uInt)pfile_in_zip_read_info->rest_read_compressed;
1259 if (uReadThis == 0) 1259 if (uReadThis == 0)
1260 return UNZ_EOF; 1260 return UNZ_EOF;
1261 if (ZSEEK(pfile_in_zip_read_info->z_filefunc, 1261 if (ZSEEK(pfile_in_zip_read_info->z_filefunc,
1262 pfile_in_zip_read_info->filestream, 1262 pfile_in_zip_read_info->filestream,
1263 pfile_in_zip_read_info->pos_in_zipfile + 1263 pfile_in_zip_read_info->pos_in_zipfile +
1264 pfile_in_zip_read_info->byte_before_the_zipfile, 1264 pfile_in_zip_read_info->byte_before_the_zipfile,
1265 ZLIB_FILEFUNC_SEEK_SET)!=0) 1265 ZLIB_FILEFUNC_SEEK_SET)!=0)
1266 return UNZ_ERRNO; 1266 return UNZ_ERRNO;
1267 if (ZREAD(pfile_in_zip_read_info->z_filefunc, 1267 if (ZREAD(pfile_in_zip_read_info->z_filefunc,
1268 pfile_in_zip_read_info->filestream, 1268 pfile_in_zip_read_info->filestream,
1269 pfile_in_zip_read_info->read_buffer, 1269 pfile_in_zip_read_info->read_buffer,
1270 uReadThis)!=uReadThis) 1270 uReadThis)!=uReadThis)
1271 return UNZ_ERRNO; 1271 return UNZ_ERRNO;
1272 1272
1273 1273
1274 #ifndef NOUNCRYPT 1274# ifndef NOUNCRYPT
1275 if(s->encrypted) 1275 if(s->encrypted)
1276 { 1276 {
1277 uInt i; 1277 uInt i;
1278 for(i=0;i<uReadThis;i++) 1278 for(i=0;i<uReadThis;i++)
1279 pfile_in_zip_read_info->read_buffer[i] = 1279 pfile_in_zip_read_info->read_buffer[i] =
1280 zdecode(s->keys,s->pcrc_32_tab, 1280 zdecode(s->keys,s->pcrc_32_tab,
1281 pfile_in_zip_read_info->read_buffer[i]); 1281 pfile_in_zip_read_info->read_buffer[i]);
1282 } 1282 }
1283 #endif 1283# endif
1284 1284
1285 1285
1286 pfile_in_zip_read_info->pos_in_zipfile += uReadThis; 1286 pfile_in_zip_read_info->pos_in_zipfile += uReadThis;
1287 1287
1288 pfile_in_zip_read_info->rest_read_compressed-=uReadThis; 1288 pfile_in_zip_read_info->rest_read_compressed-=uReadThis;
1289 1289
1290 pfile_in_zip_read_info->stream.next_in = 1290 pfile_in_zip_read_info->stream.next_in =
1291 (Bytef*)pfile_in_zip_read_info->read_buffer; 1291 (Bytef*)pfile_in_zip_read_info->read_buffer;
1292 pfile_in_zip_read_info->stream.avail_in = (uInt)uReadThis; 1292 pfile_in_zip_read_info->stream.avail_in = (uInt)uReadThis;
1293 } 1293 }
1294 1294
1295 if ((pfile_in_zip_read_info->compression_method==0) || (pfile_in_zip_read_info->raw)) 1295 if ((pfile_in_zip_read_info->compression_method==0) || (pfile_in_zip_read_info->raw))
1296 { 1296 {
1297 uInt uDoCopy,i ; 1297 uInt uDoCopy,i ;
1298 1298
1299 if ((pfile_in_zip_read_info->stream.avail_in == 0) && 1299 if ((pfile_in_zip_read_info->stream.avail_in == 0) &&
1300 (pfile_in_zip_read_info->rest_read_compressed == 0)) 1300 (pfile_in_zip_read_info->rest_read_compressed == 0))
1301 return (iRead==0) ? UNZ_EOF : iRead; 1301 return (iRead==0) ? UNZ_EOF : iRead;
1302 1302
1303 if (pfile_in_zip_read_info->stream.avail_out < 1303 if (pfile_in_zip_read_info->stream.avail_out <
1304 pfile_in_zip_read_info->stream.avail_in) 1304 pfile_in_zip_read_info->stream.avail_in)
1305 uDoCopy = pfile_in_zip_read_info->stream.avail_out ; 1305 uDoCopy = pfile_in_zip_read_info->stream.avail_out ;
1306 else 1306 else
1307 uDoCopy = pfile_in_zip_read_info->stream.avail_in ; 1307 uDoCopy = pfile_in_zip_read_info->stream.avail_in ;
1308 1308
1309 for (i=0;i<uDoCopy;i++) 1309 for (i=0;i<uDoCopy;i++)
1310 *(pfile_in_zip_read_info->stream.next_out+i) = 1310 *(pfile_in_zip_read_info->stream.next_out+i) =
1311 *(pfile_in_zip_read_info->stream.next_in+i); 1311 *(pfile_in_zip_read_info->stream.next_in+i);
1312 1312
1313 pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32, 1313 pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,
1314 pfile_in_zip_read_info->stream.next_out, 1314 pfile_in_zip_read_info->stream.next_out,
1315 uDoCopy); 1315 uDoCopy);
1316 pfile_in_zip_read_info->rest_read_uncompressed-=uDoCopy; 1316 pfile_in_zip_read_info->rest_read_uncompressed-=uDoCopy;
1317 pfile_in_zip_read_info->stream.avail_in -= uDoCopy; 1317 pfile_in_zip_read_info->stream.avail_in -= uDoCopy;
1318 pfile_in_zip_read_info->stream.avail_out -= uDoCopy; 1318 pfile_in_zip_read_info->stream.avail_out -= uDoCopy;
1319 pfile_in_zip_read_info->stream.next_out += uDoCopy; 1319 pfile_in_zip_read_info->stream.next_out += uDoCopy;
1320 pfile_in_zip_read_info->stream.next_in += uDoCopy; 1320 pfile_in_zip_read_info->stream.next_in += uDoCopy;
1321 pfile_in_zip_read_info->stream.total_out += uDoCopy; 1321 pfile_in_zip_read_info->stream.total_out += uDoCopy;
1322 iRead += uDoCopy; 1322 iRead += uDoCopy;
1323 } 1323 }
1324 else 1324 else
1325 { 1325 {
1326 uLong uTotalOutBefore,uTotalOutAfter; 1326 uLong uTotalOutBefore,uTotalOutAfter;
1327 const Bytef *bufBefore; 1327 const Bytef *bufBefore;
1328 uLong uOutThis; 1328 uLong uOutThis;
1329 int flush=Z_SYNC_FLUSH; 1329 int flush=Z_SYNC_FLUSH;
1330 1330
1331 uTotalOutBefore = pfile_in_zip_read_info->stream.total_out; 1331 uTotalOutBefore = pfile_in_zip_read_info->stream.total_out;
1332 bufBefore = pfile_in_zip_read_info->stream.next_out; 1332 bufBefore = pfile_in_zip_read_info->stream.next_out;
1333 1333
1334 /* 1334 /*
1335 if ((pfile_in_zip_read_info->rest_read_uncompressed == 1335 if ((pfile_in_zip_read_info->rest_read_uncompressed ==
1336 pfile_in_zip_read_info->stream.avail_out) && 1336 pfile_in_zip_read_info->stream.avail_out) &&
1337 (pfile_in_zip_read_info->rest_read_compressed == 0)) 1337 (pfile_in_zip_read_info->rest_read_compressed == 0))
1338 flush = Z_FINISH; 1338 flush = Z_FINISH;
1339 */ 1339 */
1340 err=inflate(&pfile_in_zip_read_info->stream,flush); 1340 err=inflate(&pfile_in_zip_read_info->stream,flush);
1341 1341
1342 uTotalOutAfter = pfile_in_zip_read_info->stream.total_out; 1342 uTotalOutAfter = pfile_in_zip_read_info->stream.total_out;
1343 uOutThis = uTotalOutAfter-uTotalOutBefore; 1343 uOutThis = uTotalOutAfter-uTotalOutBefore;
1344 1344
1345 pfile_in_zip_read_info->crc32 = 1345 pfile_in_zip_read_info->crc32 =
1346 crc32(pfile_in_zip_read_info->crc32,bufBefore, 1346 crc32(pfile_in_zip_read_info->crc32,bufBefore,
1347 (uInt)(uOutThis)); 1347 (uInt)(uOutThis));
1348 1348
1349 pfile_in_zip_read_info->rest_read_uncompressed -= 1349 pfile_in_zip_read_info->rest_read_uncompressed -=
1350 uOutThis; 1350 uOutThis;
1351 1351
1352 iRead += (uInt)(uTotalOutAfter - uTotalOutBefore); 1352 iRead += (uInt)(uTotalOutAfter - uTotalOutBefore);
1353 1353
1354 if (err==Z_STREAM_END) 1354 if (err==Z_STREAM_END)
1355 return (iRead==0) ? UNZ_EOF : iRead; 1355 return (iRead==0) ? UNZ_EOF : iRead;
1356 if (err!=Z_OK) 1356 if (err!=Z_OK)
1357 break; 1357 break;
1358 } 1358 }
1359 } 1359 }
1360 1360
1361 if (err==Z_OK) 1361 if (err==Z_OK)
1362 return iRead; 1362 return iRead;
1363 return err; 1363 return err;
1364} 1364}
1365 1365
1366 1366
1367/* 1367/*
1368 Give the current position in uncompressed data 1368 Give the current position in uncompressed data
1369*/ 1369*/
1370extern z_off_t ZEXPORT unztell (file) 1370extern z_off_t ZEXPORT unztell (file)
1371 unzFile file; 1371 unzFile file;
1372{ 1372{
1373 unz_s* s; 1373 unz_s* s;
1374 file_in_zip_read_info_s* pfile_in_zip_read_info; 1374 file_in_zip_read_info_s* pfile_in_zip_read_info;
1375 if (file==NULL) 1375 if (file==NULL)
1376 return UNZ_PARAMERROR; 1376 return UNZ_PARAMERROR;
1377 s=(unz_s*)file; 1377 s=(unz_s*)file;
1378 pfile_in_zip_read_info=s->pfile_in_zip_read; 1378 pfile_in_zip_read_info=s->pfile_in_zip_read;
1379 1379
1380 if (pfile_in_zip_read_info==NULL) 1380 if (pfile_in_zip_read_info==NULL)
1381 return UNZ_PARAMERROR; 1381 return UNZ_PARAMERROR;
1382 1382
1383 return (z_off_t)pfile_in_zip_read_info->stream.total_out; 1383 return (z_off_t)pfile_in_zip_read_info->stream.total_out;
1384} 1384}
1385 1385
1386 1386
1387/* 1387/*
1388 return 1 if the end of file was reached, 0 elsewhere 1388 return 1 if the end of file was reached, 0 elsewhere
1389*/ 1389*/
1390extern int ZEXPORT unzeof (file) 1390extern int ZEXPORT unzeof (file)
1391 unzFile file; 1391 unzFile file;
1392{ 1392{
1393 unz_s* s; 1393 unz_s* s;
1394 file_in_zip_read_info_s* pfile_in_zip_read_info; 1394 file_in_zip_read_info_s* pfile_in_zip_read_info;
1395 if (file==NULL) 1395 if (file==NULL)
1396 return UNZ_PARAMERROR; 1396 return UNZ_PARAMERROR;
1397 s=(unz_s*)file; 1397 s=(unz_s*)file;
1398 pfile_in_zip_read_info=s->pfile_in_zip_read; 1398 pfile_in_zip_read_info=s->pfile_in_zip_read;
1399 1399
1400 if (pfile_in_zip_read_info==NULL) 1400 if (pfile_in_zip_read_info==NULL)
1401 return UNZ_PARAMERROR; 1401 return UNZ_PARAMERROR;
1402 1402
1403 if (pfile_in_zip_read_info->rest_read_uncompressed == 0) 1403 if (pfile_in_zip_read_info->rest_read_uncompressed == 0)
1404 return 1; 1404 return 1;
1405 else 1405 else
1406 return 0; 1406 return 0;
1407} 1407}
1408 1408
1409 1409
1410 1410
1411/* 1411/*
1412 Read extra field from the current file (opened by unzOpenCurrentFile) 1412 Read extra field from the current file (opened by unzOpenCurrentFile)
1413 This is the local-header version of the extra field (sometimes, there is 1413 This is the local-header version of the extra field (sometimes, there is
1414 more info in the local-header version than in the central-header) 1414 more info in the local-header version than in the central-header)
1415 1415
1416 if buf==NULL, it return the size of the local extra field that can be read 1416 if buf==NULL, it return the size of the local extra field that can be read
1417 1417
1418 if buf!=NULL, len is the size of the buffer, the extra header is copied in 1418 if buf!=NULL, len is the size of the buffer, the extra header is copied in
1419 buf. 1419 buf.
1420 the return value is the number of bytes copied in buf, or (if <0) 1420 the return value is the number of bytes copied in buf, or (if <0)
1421 the error code 1421 the error code
1422*/ 1422*/
1423extern int ZEXPORT unzGetLocalExtrafield (file,buf,len) 1423extern int ZEXPORT unzGetLocalExtrafield (file,buf,len)
1424 unzFile file; 1424 unzFile file;
1425 voidp buf; 1425 voidp buf;
1426 unsigned len; 1426 unsigned len;
1427{ 1427{
1428 unz_s* s; 1428 unz_s* s;
1429 file_in_zip_read_info_s* pfile_in_zip_read_info; 1429 file_in_zip_read_info_s* pfile_in_zip_read_info;
1430 uInt read_now; 1430 uInt read_now;
1431 uLong size_to_read; 1431 uLong size_to_read;
1432 1432
1433 if (file==NULL) 1433 if (file==NULL)
1434 return UNZ_PARAMERROR; 1434 return UNZ_PARAMERROR;
1435 s=(unz_s*)file; 1435 s=(unz_s*)file;
1436 pfile_in_zip_read_info=s->pfile_in_zip_read; 1436 pfile_in_zip_read_info=s->pfile_in_zip_read;
1437 1437
1438 if (pfile_in_zip_read_info==NULL) 1438 if (pfile_in_zip_read_info==NULL)
1439 return UNZ_PARAMERROR; 1439 return UNZ_PARAMERROR;
1440 1440
1441 size_to_read = (pfile_in_zip_read_info->size_local_extrafield - 1441 size_to_read = (pfile_in_zip_read_info->size_local_extrafield -
1442 pfile_in_zip_read_info->pos_local_extrafield); 1442 pfile_in_zip_read_info->pos_local_extrafield);
1443 1443
1444 if (buf==NULL) 1444 if (buf==NULL)
1445 return (int)size_to_read; 1445 return (int)size_to_read;
1446 1446
1447 if (len>size_to_read) 1447 if (len>size_to_read)
1448 read_now = (uInt)size_to_read; 1448 read_now = (uInt)size_to_read;
1449 else 1449 else
1450 read_now = (uInt)len ; 1450 read_now = (uInt)len ;
1451 1451
1452 if (read_now==0) 1452 if (read_now==0)
1453 return 0; 1453 return 0;
1454 1454
1455 if (ZSEEK(pfile_in_zip_read_info->z_filefunc, 1455 if (ZSEEK(pfile_in_zip_read_info->z_filefunc,
1456 pfile_in_zip_read_info->filestream, 1456 pfile_in_zip_read_info->filestream,
1457 pfile_in_zip_read_info->offset_local_extrafield + 1457 pfile_in_zip_read_info->offset_local_extrafield +
1458 pfile_in_zip_read_info->pos_local_extrafield, 1458 pfile_in_zip_read_info->pos_local_extrafield,
1459 ZLIB_FILEFUNC_SEEK_SET)!=0) 1459 ZLIB_FILEFUNC_SEEK_SET)!=0)
1460 return UNZ_ERRNO; 1460 return UNZ_ERRNO;
1461 1461
1462 if (ZREAD(pfile_in_zip_read_info->z_filefunc, 1462 if (ZREAD(pfile_in_zip_read_info->z_filefunc,
1463 pfile_in_zip_read_info->filestream, 1463 pfile_in_zip_read_info->filestream,
1464 buf,size_to_read)!=size_to_read) 1464 buf,size_to_read)!=size_to_read)
1465 return UNZ_ERRNO; 1465 return UNZ_ERRNO;
1466 1466
1467 return (int)read_now; 1467 return (int)read_now;
1468} 1468}
1469 1469
1470/* 1470/*
1471 Close the file in zip opened with unzipOpenCurrentFile 1471 Close the file in zip opened with unzipOpenCurrentFile
1472 Return UNZ_CRCERROR if all the file was read but the CRC is not good 1472 Return UNZ_CRCERROR if all the file was read but the CRC is not good
1473*/ 1473*/
1474extern int ZEXPORT unzCloseCurrentFile (file) 1474extern int ZEXPORT unzCloseCurrentFile (file)
1475 unzFile file; 1475 unzFile file;
1476{ 1476{
1477 int err=UNZ_OK; 1477 int err=UNZ_OK;
1478 1478
1479 unz_s* s; 1479 unz_s* s;
1480 file_in_zip_read_info_s* pfile_in_zip_read_info; 1480 file_in_zip_read_info_s* pfile_in_zip_read_info;
1481 if (file==NULL) 1481 if (file==NULL)
1482 return UNZ_PARAMERROR; 1482 return UNZ_PARAMERROR;
1483 s=(unz_s*)file; 1483 s=(unz_s*)file;
1484 pfile_in_zip_read_info=s->pfile_in_zip_read; 1484 pfile_in_zip_read_info=s->pfile_in_zip_read;
1485 1485
1486 if (pfile_in_zip_read_info==NULL) 1486 if (pfile_in_zip_read_info==NULL)
1487 return UNZ_PARAMERROR; 1487 return UNZ_PARAMERROR;
1488 1488
1489 1489
1490 if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) && 1490 if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) &&
1491 (!pfile_in_zip_read_info->raw)) 1491 (!pfile_in_zip_read_info->raw))
1492 { 1492 {
1493 if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait) 1493 if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait)
1494 err=UNZ_CRCERROR; 1494 err=UNZ_CRCERROR;
1495 } 1495 }
1496 1496
1497 1497
1498 TRYFREE(pfile_in_zip_read_info->read_buffer); 1498 TRYFREE(pfile_in_zip_read_info->read_buffer);
1499 pfile_in_zip_read_info->read_buffer = NULL; 1499 pfile_in_zip_read_info->read_buffer = NULL;
1500 if (pfile_in_zip_read_info->stream_initialised) 1500 if (pfile_in_zip_read_info->stream_initialised)
1501 inflateEnd(&pfile_in_zip_read_info->stream); 1501 inflateEnd(&pfile_in_zip_read_info->stream);
1502 1502
1503 pfile_in_zip_read_info->stream_initialised = 0; 1503 pfile_in_zip_read_info->stream_initialised = 0;
1504 TRYFREE(pfile_in_zip_read_info); 1504 TRYFREE(pfile_in_zip_read_info);
1505 1505
1506 s->pfile_in_zip_read=NULL; 1506 s->pfile_in_zip_read=NULL;
1507 1507
1508 return err; 1508 return err;
1509} 1509}
1510 1510
1511 1511
1512/* 1512/*
1513 Get the global comment string of the ZipFile, in the szComment buffer. 1513 Get the global comment string of the ZipFile, in the szComment buffer.
1514 uSizeBuf is the size of the szComment buffer. 1514 uSizeBuf is the size of the szComment buffer.
1515 return the number of byte copied or an error code <0 1515 return the number of byte copied or an error code <0
1516*/ 1516*/
1517extern int ZEXPORT unzGetGlobalComment (file, szComment, uSizeBuf) 1517extern int ZEXPORT unzGetGlobalComment (file, szComment, uSizeBuf)
1518 unzFile file; 1518 unzFile file;
1519 char *szComment; 1519 char *szComment;
1520 uLong uSizeBuf; 1520 uLong uSizeBuf;
1521{ 1521{
1522 int err=UNZ_OK; 1522 int err=UNZ_OK;
1523 unz_s* s; 1523 unz_s* s;
1524 uLong uReadThis ; 1524 uLong uReadThis ;
1525 if (file==NULL) 1525 if (file==NULL)
1526 return UNZ_PARAMERROR; 1526 return UNZ_PARAMERROR;
1527 s=(unz_s*)file; 1527 s=(unz_s*)file;
1528 1528
1529 uReadThis = uSizeBuf; 1529 uReadThis = uSizeBuf;
1530 if (uReadThis>s->gi.size_comment) 1530 if (uReadThis>s->gi.size_comment)
1531 uReadThis = s->gi.size_comment; 1531 uReadThis = s->gi.size_comment;
1532 1532
1533 if (ZSEEK(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0) 1533 if (ZSEEK(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0)
1534 return UNZ_ERRNO; 1534 return UNZ_ERRNO;
1535 1535
1536 if (uReadThis>0) 1536 if (uReadThis>0)
1537 { 1537 {
1538 *szComment='\0'; 1538 *szComment='\0';
1539 if (ZREAD(s->z_filefunc,s->filestream,szComment,uReadThis)!=uReadThis) 1539 if (ZREAD(s->z_filefunc,s->filestream,szComment,uReadThis)!=uReadThis)
1540 return UNZ_ERRNO; 1540 return UNZ_ERRNO;
1541 } 1541 }
1542 1542
1543 if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment)) 1543 if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment))
1544 *(szComment+s->gi.size_comment)='\0'; 1544 *(szComment+s->gi.size_comment)='\0';
1545 return (int)uReadThis; 1545 return (int)uReadThis;
1546} 1546}
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