1 /* iowin32.c -- IO base function header for compress/uncompress .zip
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 for Zip64 support
8 Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
9
10 For more info read MiniZip_info.txt
11
12 */
13
14 #include <stdlib.h>
15 #define ZLIB_WINAPI
16 #include "zlib.h"
17 #include "ioapi.h"
18 #include "iowin32.h"
19
20 #ifndef INVALID_HANDLE_VALUE
21 #define INVALID_HANDLE_VALUE (0xFFFFFFFF)
22 #endif
23
24 #ifndef INVALID_SET_FILE_POINTER
25 #define INVALID_SET_FILE_POINTER ((DWORD)-1)
26 #endif
27
28 voidpf ZCALLBACK win32_open_file_func OF((voidpf opaque, const char* filename, int mode));
29 uLong ZCALLBACK win32_read_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
30 uLong ZCALLBACK win32_write_file_func OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
31 ZPOS64_T ZCALLBACK win32_tell64_file_func OF((voidpf opaque, voidpf stream));
32 long ZCALLBACK win32_seek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
33 int ZCALLBACK win32_close_file_func OF((voidpf opaque, voidpf stream));
34 int ZCALLBACK win32_error_file_func OF((voidpf opaque, voidpf stream));
35
36 typedef struct
37 {
38 HANDLE hf;
39 int error;
40 } WIN32FILE_IOWIN;
41
42
win32_translate_open_mode(int mode,DWORD * lpdwDesiredAccess,DWORD * lpdwCreationDisposition,DWORD * lpdwShareMode,DWORD * lpdwFlagsAndAttributes)43 static void win32_translate_open_mode(int mode,
44 DWORD* lpdwDesiredAccess,
45 DWORD* lpdwCreationDisposition,
46 DWORD* lpdwShareMode,
47 DWORD* lpdwFlagsAndAttributes)
48 {
49 *lpdwDesiredAccess = *lpdwShareMode = *lpdwFlagsAndAttributes = *lpdwCreationDisposition = 0;
50
51 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
52 {
53 *lpdwDesiredAccess = GENERIC_READ;
54 *lpdwCreationDisposition = OPEN_EXISTING;
55 *lpdwShareMode = FILE_SHARE_READ;
56 }
57 else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
58 {
59 *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
60 *lpdwCreationDisposition = OPEN_EXISTING;
61 }
62 else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
63 {
64 *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
65 *lpdwCreationDisposition = CREATE_ALWAYS;
66 }
67 }
68
win32_build_iowin(HANDLE hFile)69 static voidpf win32_build_iowin(HANDLE hFile)
70 {
71 voidpf ret=NULL;
72
73 if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE))
74 {
75 WIN32FILE_IOWIN w32fiow;
76 w32fiow.hf = hFile;
77 w32fiow.error = 0;
78 ret = malloc(sizeof(WIN32FILE_IOWIN));
79
80 if (ret==NULL)
81 CloseHandle(hFile);
82 else
83 *((WIN32FILE_IOWIN*)ret) = w32fiow;
84 }
85 return ret;
86 }
87
win32_open64_file_func(voidpf opaque,const void * filename,int mode)88 voidpf ZCALLBACK win32_open64_file_func (voidpf opaque,const void* filename,int mode)
89 {
90 DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
91 HANDLE hFile = NULL;
92
93 win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
94
95 if ((filename!=NULL) && (dwDesiredAccess != 0))
96 hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
97
98 return win32_build_iowin(hFile);
99 }
100
101
win32_open64_file_funcA(voidpf opaque,const void * filename,int mode)102 voidpf ZCALLBACK win32_open64_file_funcA (voidpf opaque,const void* filename,int mode)
103 {
104 DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
105 HANDLE hFile = NULL;
106
107 win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
108
109 if ((filename!=NULL) && (dwDesiredAccess != 0))
110 hFile = CreateFileA((LPCSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
111
112 return win32_build_iowin(hFile);
113 }
114
115
win32_open64_file_funcW(voidpf opaque,const void * filename,int mode)116 voidpf ZCALLBACK win32_open64_file_funcW (voidpf opaque,const void* filename,int mode)
117 {
118 DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
119 HANDLE hFile = NULL;
120
121 win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
122
123 if ((filename!=NULL) && (dwDesiredAccess != 0))
124 hFile = CreateFileW((LPCWSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
125
126 return win32_build_iowin(hFile);
127 }
128
129
win32_open_file_func(voidpf opaque,const char * filename,int mode)130 voidpf ZCALLBACK win32_open_file_func (voidpf opaque,const char* filename,int mode)
131 {
132 DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
133 HANDLE hFile = NULL;
134
135 win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
136
137 if ((filename!=NULL) && (dwDesiredAccess != 0))
138 hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
139
140 return win32_build_iowin(hFile);
141 }
142
143
win32_read_file_func(voidpf opaque,voidpf stream,void * buf,uLong size)144 uLong ZCALLBACK win32_read_file_func (voidpf opaque, voidpf stream, void* buf,uLong size)
145 {
146 uLong ret=0;
147 HANDLE hFile = NULL;
148 if (stream!=NULL)
149 hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
150
151 if (hFile != NULL)
152 {
153 if (!ReadFile(hFile, buf, size, &ret, NULL))
154 {
155 DWORD dwErr = GetLastError();
156 if (dwErr == ERROR_HANDLE_EOF)
157 dwErr = 0;
158 ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
159 }
160 }
161
162 return ret;
163 }
164
165
win32_write_file_func(voidpf opaque,voidpf stream,const void * buf,uLong size)166 uLong ZCALLBACK win32_write_file_func (voidpf opaque,voidpf stream,const void* buf,uLong size)
167 {
168 uLong ret=0;
169 HANDLE hFile = NULL;
170 if (stream!=NULL)
171 hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
172
173 if (hFile != NULL)
174 {
175 if (!WriteFile(hFile, buf, size, &ret, NULL))
176 {
177 DWORD dwErr = GetLastError();
178 if (dwErr == ERROR_HANDLE_EOF)
179 dwErr = 0;
180 ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
181 }
182 }
183
184 return ret;
185 }
186
win32_tell_file_func(voidpf opaque,voidpf stream)187 long ZCALLBACK win32_tell_file_func (voidpf opaque,voidpf stream)
188 {
189 long ret=-1;
190 HANDLE hFile = NULL;
191 if (stream!=NULL)
192 hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
193 if (hFile != NULL)
194 {
195 DWORD dwSet = SetFilePointer(hFile, 0, NULL, FILE_CURRENT);
196 if (dwSet == INVALID_SET_FILE_POINTER)
197 {
198 DWORD dwErr = GetLastError();
199 ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
200 ret = -1;
201 }
202 else
203 ret=(long)dwSet;
204 }
205 return ret;
206 }
207
win32_tell64_file_func(voidpf opaque,voidpf stream)208 ZPOS64_T ZCALLBACK win32_tell64_file_func (voidpf opaque, voidpf stream)
209 {
210 ZPOS64_T ret= (ZPOS64_T)-1;
211 HANDLE hFile = NULL;
212 if (stream!=NULL)
213 hFile = ((WIN32FILE_IOWIN*)stream)->hf;
214
215 if (hFile)
216 {
217 LARGE_INTEGER li;
218 li.QuadPart = 0;
219 li.u.LowPart = SetFilePointer(hFile, li.u.LowPart, &li.u.HighPart, FILE_CURRENT);
220 if ( (li.LowPart == 0xFFFFFFFF) && (GetLastError() != NO_ERROR))
221 {
222 DWORD dwErr = GetLastError();
223 ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
224 ret = (ZPOS64_T)-1;
225 }
226 else
227 ret=li.QuadPart;
228 }
229 return ret;
230 }
231
232
win32_seek_file_func(voidpf opaque,voidpf stream,uLong offset,int origin)233 long ZCALLBACK win32_seek_file_func (voidpf opaque,voidpf stream,uLong offset,int origin)
234 {
235 DWORD dwMoveMethod=0xFFFFFFFF;
236 HANDLE hFile = NULL;
237
238 long ret=-1;
239 if (stream!=NULL)
240 hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
241 switch (origin)
242 {
243 case ZLIB_FILEFUNC_SEEK_CUR :
244 dwMoveMethod = FILE_CURRENT;
245 break;
246 case ZLIB_FILEFUNC_SEEK_END :
247 dwMoveMethod = FILE_END;
248 break;
249 case ZLIB_FILEFUNC_SEEK_SET :
250 dwMoveMethod = FILE_BEGIN;
251 break;
252 default: return -1;
253 }
254
255 if (hFile != NULL)
256 {
257 DWORD dwSet = SetFilePointer(hFile, offset, NULL, dwMoveMethod);
258 if (dwSet == INVALID_SET_FILE_POINTER)
259 {
260 DWORD dwErr = GetLastError();
261 ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
262 ret = -1;
263 }
264 else
265 ret=0;
266 }
267 return ret;
268 }
269
win32_seek64_file_func(voidpf opaque,voidpf stream,ZPOS64_T offset,int origin)270 long ZCALLBACK win32_seek64_file_func (voidpf opaque, voidpf stream,ZPOS64_T offset,int origin)
271 {
272 DWORD dwMoveMethod=0xFFFFFFFF;
273 HANDLE hFile = NULL;
274 long ret=-1;
275
276 if (stream!=NULL)
277 hFile = ((WIN32FILE_IOWIN*)stream)->hf;
278
279 switch (origin)
280 {
281 case ZLIB_FILEFUNC_SEEK_CUR :
282 dwMoveMethod = FILE_CURRENT;
283 break;
284 case ZLIB_FILEFUNC_SEEK_END :
285 dwMoveMethod = FILE_END;
286 break;
287 case ZLIB_FILEFUNC_SEEK_SET :
288 dwMoveMethod = FILE_BEGIN;
289 break;
290 default: return -1;
291 }
292
293 if (hFile)
294 {
295 LARGE_INTEGER* li = (LARGE_INTEGER*)&offset;
296 DWORD dwSet = SetFilePointer(hFile, li->u.LowPart, &li->u.HighPart, dwMoveMethod);
297 if (dwSet == INVALID_SET_FILE_POINTER)
298 {
299 DWORD dwErr = GetLastError();
300 ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
301 ret = -1;
302 }
303 else
304 ret=0;
305 }
306 return ret;
307 }
308
win32_close_file_func(voidpf opaque,voidpf stream)309 int ZCALLBACK win32_close_file_func (voidpf opaque, voidpf stream)
310 {
311 int ret=-1;
312
313 if (stream!=NULL)
314 {
315 HANDLE hFile;
316 hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
317 if (hFile != NULL)
318 {
319 CloseHandle(hFile);
320 ret=0;
321 }
322 free(stream);
323 }
324 return ret;
325 }
326
win32_error_file_func(voidpf opaque,voidpf stream)327 int ZCALLBACK win32_error_file_func (voidpf opaque,voidpf stream)
328 {
329 int ret=-1;
330 if (stream!=NULL)
331 {
332 ret = ((WIN32FILE_IOWIN*)stream) -> error;
333 }
334 return ret;
335 }
336
fill_win32_filefunc(zlib_filefunc_def * pzlib_filefunc_def)337 void fill_win32_filefunc (zlib_filefunc_def* pzlib_filefunc_def)
338 {
339 pzlib_filefunc_def->zopen_file = win32_open_file_func;
340 pzlib_filefunc_def->zread_file = win32_read_file_func;
341 pzlib_filefunc_def->zwrite_file = win32_write_file_func;
342 pzlib_filefunc_def->ztell_file = win32_tell_file_func;
343 pzlib_filefunc_def->zseek_file = win32_seek_file_func;
344 pzlib_filefunc_def->zclose_file = win32_close_file_func;
345 pzlib_filefunc_def->zerror_file = win32_error_file_func;
346 pzlib_filefunc_def->opaque = NULL;
347 }
348
fill_win32_filefunc64(zlib_filefunc64_def * pzlib_filefunc_def)349 void fill_win32_filefunc64(zlib_filefunc64_def* pzlib_filefunc_def)
350 {
351 pzlib_filefunc_def->zopen64_file = win32_open64_file_func;
352 pzlib_filefunc_def->zread_file = win32_read_file_func;
353 pzlib_filefunc_def->zwrite_file = win32_write_file_func;
354 pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
355 pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
356 pzlib_filefunc_def->zclose_file = win32_close_file_func;
357 pzlib_filefunc_def->zerror_file = win32_error_file_func;
358 pzlib_filefunc_def->opaque = NULL;
359 }
360
361
fill_win32_filefunc64A(zlib_filefunc64_def * pzlib_filefunc_def)362 void fill_win32_filefunc64A(zlib_filefunc64_def* pzlib_filefunc_def)
363 {
364 pzlib_filefunc_def->zopen64_file = win32_open64_file_funcA;
365 pzlib_filefunc_def->zread_file = win32_read_file_func;
366 pzlib_filefunc_def->zwrite_file = win32_write_file_func;
367 pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
368 pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
369 pzlib_filefunc_def->zclose_file = win32_close_file_func;
370 pzlib_filefunc_def->zerror_file = win32_error_file_func;
371 pzlib_filefunc_def->opaque = NULL;
372 }
373
374
fill_win32_filefunc64W(zlib_filefunc64_def * pzlib_filefunc_def)375 void fill_win32_filefunc64W(zlib_filefunc64_def* pzlib_filefunc_def)
376 {
377 pzlib_filefunc_def->zopen64_file = win32_open64_file_funcW;
378 pzlib_filefunc_def->zread_file = win32_read_file_func;
379 pzlib_filefunc_def->zwrite_file = win32_write_file_func;
380 pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
381 pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
382 pzlib_filefunc_def->zclose_file = win32_close_file_func;
383 pzlib_filefunc_def->zerror_file = win32_error_file_func;
384 pzlib_filefunc_def->opaque = NULL;
385 }
386