/
win32.c
1154 lines (930 loc) · 31.7 KB
1
/*
2
* Win32 support routines for PhysicsFS.
3
4
5
*
* Please see the file LICENSE in the source's root directory.
*
6
* This file written by Ryan C. Gordon, and made sane by Gregory S. Read.
7
8
*/
9
10
11
12
#if HAVE_CONFIG_H
# include <config.h>
#endif
13
14
#ifdef WIN32
15
16
#include <windows.h>
#include <stdio.h>
17
#include <stdlib.h>
18
19
#include <string.h>
#include <errno.h>
20
#include <ctype.h>
21
#include <time.h>
22
23
24
25
#define __PHYSICSFS_INTERNAL__
#include "physfs_internal.h"
26
27
#if (defined _MSC_VER)
#define alloca(x) _alloca(x)
28
#elif (defined __MINGW32__) /* scary...hopefully this is okay. */
29
#define alloca(x) __builtin_alloca(x)
30
31
#endif
32
33
34
35
#define LOWORDER_UINT64(pos) (PHYSFS_uint32) \
(pos & 0x00000000FFFFFFFF)
#define HIGHORDER_UINT64(pos) (PHYSFS_uint32) \
(((pos & 0xFFFFFFFF00000000) >> 32) & 0x00000000FFFFFFFF)
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
/* GetUserProfileDirectory() is only available on >= NT4 (no 9x/ME systems!) */
typedef BOOL (STDMETHODCALLTYPE FAR * LPFNGETUSERPROFILEDIR) (
HANDLE hToken,
LPTSTR lpProfileDir,
LPDWORD lpcchSize);
/* GetFileAttributesEx() is only available on >= Win98 or WinNT4 ... */
typedef BOOL (STDMETHODCALLTYPE FAR * LPFNGETFILEATTRIBUTESEX) (
LPCTSTR lpFileName,
GET_FILEEX_INFO_LEVELS fInfoLevelId,
LPVOID lpFileInformation);
typedef struct
{
HANDLE handle;
int readonly;
} win32file;
54
55
56
57
58
const char *__PHYSFS_platformDirSeparator = "\\";
static LPFNGETFILEATTRIBUTESEX pGetFileAttributesEx = NULL;
static HANDLE libKernel32 = NULL;
static char *userDir = NULL;
59
60
61
62
63
64
/*
* Users without the platform SDK don't have this defined. The original docs
* for SetFilePointer() just said to compare with 0xFFFFFFFF, so this should
* work as desired
*/
65
#define PHYSFS_INVALID_SET_FILE_POINTER 0xFFFFFFFF
66
67
/* just in case... */
68
69
#define PHYSFS_INVALID_FILE_ATTRIBUTES 0xFFFFFFFF
70
71
72
73
74
75
76
77
78
79
80
81
/*
* Figure out what the last failing Win32 API call was, and
* generate a human-readable string for the error message.
*
* The return value is a static buffer that is overwritten with
* each call to this function.
*/
static const char *win32strerror(void)
{
static TCHAR msgbuf[255];
82
TCHAR *ptr = msgbuf;
83
84
85
86
87
88
89
90
91
92
93
94
FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
msgbuf,
sizeof (msgbuf) / sizeof (TCHAR),
NULL
);
95
96
97
98
99
100
101
102
103
104
/* chop off newlines. */
for (ptr = msgbuf; *ptr; ptr++)
{
if ((*ptr == '\n') || (*ptr == '\r'))
{
*ptr = ' ';
break;
} /* if */
} /* for */
105
106
107
108
return((const char *) msgbuf);
} /* win32strerror */
109
static char *getExePath(const char *argv0)
110
{
111
112
113
DWORD buflen;
int success = 0;
char *ptr = NULL;
114
char *retval = (char *) allocator.Malloc(sizeof (TCHAR) * (MAX_PATH + 1));
115
116
117
118
119
120
121
122
123
124
125
126
127
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
retval[0] = '\0';
buflen = GetModuleFileName(NULL, retval, MAX_PATH + 1);
if (buflen <= 0)
__PHYSFS_setError(win32strerror());
else
{
retval[buflen] = '\0'; /* does API always null-terminate this? */
/* make sure the string was not truncated. */
if (__PHYSFS_platformStricmp(&retval[buflen - 4], ".exe") != 0)
128
__PHYSFS_setError(ERR_GETMODFN_TRUNC);
129
130
131
132
else
{
ptr = strrchr(retval, '\\');
if (ptr == NULL)
133
__PHYSFS_setError(ERR_GETMODFN_NO_DIR);
134
135
136
137
138
139
140
141
142
143
144
145
146
else
{
*(ptr + 1) = '\0'; /* chop off filename. */
success = 1;
} /* else */
} /* else */
} /* else */
/* if any part of the previous approach failed, try SearchPath()... */
if (!success)
{
if (argv0 == NULL)
147
__PHYSFS_setError(ERR_ARGV0_IS_NULL);
148
149
150
151
152
153
else
{
buflen = SearchPath(NULL, argv0, NULL, MAX_PATH+1, retval, &ptr);
if (buflen == 0)
__PHYSFS_setError(win32strerror());
else if (buflen > MAX_PATH)
154
__PHYSFS_setError(ERR_SEARCHPATH_TRUNC);
155
156
157
158
159
160
161
else
success = 1;
} /* else */
} /* if */
if (!success)
{
162
allocator.Free(retval);
163
164
165
166
return(NULL); /* physfs error message will be set, above. */
} /* if */
/* free up the bytes we didn't actually use. */
167
ptr = (char *) allocator.Realloc(retval, strlen(retval) + 1);
168
169
170
171
172
if (ptr != NULL)
retval = ptr;
return(retval); /* w00t. */
} /* getExePath */
173
174
175
/*
176
177
178
* Try to make use of GetUserProfileDirectory(), which isn't available on
* some common variants of Win32. If we can't use this, we just punt and
* use the physfs base dir for the user dir, too.
179
*
180
181
182
183
* On success, module-scope variable (userDir) will have a pointer to
* a malloc()'d string of the user's profile dir, and a non-zero value is
* returned. If we can't determine the profile dir, (userDir) will
* be NULL, and zero is returned.
184
*/
185
static int determineUserDir(void)
186
{
187
DWORD psize = 0;
188
189
char dummy[1];
BOOL rc = 0;
190
191
192
193
HANDLE processHandle; /* Current process handle */
HANDLE accessToken = NULL; /* Security handle to process */
LPFNGETUSERPROFILEDIR GetUserProfileDirectory;
HMODULE lib;
194
195
assert(userDir == NULL);
196
197
198
199
200
201
202
/*
* GetUserProfileDirectory() is only available on NT 4.0 and later.
* This means Win95/98/ME (and CE?) users have to do without, so for
* them, we'll default to the base directory when we can't get the
* function pointer.
*/
203
204
205
206
207
208
lib = LoadLibrary("userenv.dll");
if (lib)
{
/* !!! FIXME: Handle Unicode? */
GetUserProfileDirectory = (LPFNGETUSERPROFILEDIR)
209
GetProcAddress(lib, "GetUserProfileDirectoryA");
210
211
212
213
214
215
216
217
218
219
220
221
222
223
if (GetUserProfileDirectory)
{
processHandle = GetCurrentProcess();
if (OpenProcessToken(processHandle, TOKEN_QUERY, &accessToken))
{
/*
* Should fail. Will write the size of the profile path in
* psize. Also note that the second parameter can't be
* NULL or the function fails.
*/
rc = GetUserProfileDirectory(accessToken, dummy, &psize);
assert(!rc); /* success?! */
/* Allocate memory for the profile directory */
224
userDir = (char *) allocator.Malloc(psize);
225
226
227
228
if (userDir != NULL)
{
if (!GetUserProfileDirectory(accessToken, userDir, &psize))
{
229
allocator.Free(userDir);
230
231
232
233
userDir = NULL;
} /* if */
} /* else */
} /* if */
234
235
236
CloseHandle(accessToken);
} /* if */
237
238
FreeLibrary(lib);
239
240
} /* if */
241
if (userDir == NULL) /* couldn't get profile for some reason. */
242
{
243
244
245
/* Might just be a non-NT system; resort to the basedir. */
userDir = getExePath(NULL);
BAIL_IF_MACRO(userDir == NULL, NULL, 0); /* STILL failed?! */
246
} /* if */
247
248
249
return(1); /* We made it: hit the showers. */
} /* determineUserDir */
250
251
252
static BOOL mediaInDrive(const char *drive)
253
{
254
UINT oldErrorMode;
255
256
DWORD tmp;
BOOL retval;
257
258
/* Prevent windows warning message appearing when checking media size */
259
oldErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
260
261
/* If this function succeeds, there's media in the drive */
262
retval = GetVolumeInformation(drive, NULL, 0, NULL, NULL, &tmp, NULL, 0);
263
264
/* Revert back to old windows error handler */
265
266
SetErrorMode(oldErrorMode);
267
return(retval);
268
} /* mediaInDrive */
269
270
271
void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)
272
273
{
char drive_str[4] = "x:\\";
274
275
char ch;
for (ch = 'A'; ch <= 'Z'; ch++)
276
{
277
drive_str[0] = ch;
278
if (GetDriveType(drive_str) == DRIVE_CDROM && mediaInDrive(drive_str))
279
cb(data, drive_str);
280
} /* for */
281
} /* __PHYSFS_platformDetectAvailableCDs */
282
283
284
285
char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
286
287
if ((argv0 != NULL) && (strchr(argv0, '\\') != NULL))
return(NULL); /* default behaviour can handle this. */
288
289
return(getExePath(argv0));
290
291
292
293
294
} /* __PHYSFS_platformCalcBaseDir */
char *__PHYSFS_platformGetUserName(void)
{
295
DWORD bufsize = 0;
296
297
298
299
LPTSTR retval = NULL;
if (GetUserName(NULL, &bufsize) == 0) /* This SHOULD fail. */
{
300
retval = (LPTSTR) allocator.Malloc(bufsize);
301
302
303
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
if (GetUserName(retval, &bufsize) == 0) /* ?! */
{
304
__PHYSFS_setError(win32strerror());
305
allocator.Free(retval);
306
307
308
309
310
311
312
313
314
315
retval = NULL;
} /* if */
} /* if */
return((char *) retval);
} /* __PHYSFS_platformGetUserName */
char *__PHYSFS_platformGetUserDir(void)
{
316
char *retval = (char *) allocator.Malloc(strlen(userDir) + 1);
317
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
318
319
strcpy(retval, userDir); /* calculated at init time. */
return(retval);
320
321
322
} /* __PHYSFS_platformGetUserDir */
323
PHYSFS_uint64 __PHYSFS_platformGetThreadID(void)
324
{
325
return((PHYSFS_uint64) GetCurrentThreadId());
326
327
328
} /* __PHYSFS_platformGetThreadID */
329
/* ...make this Cygwin AND Visual C friendly... */
330
331
int __PHYSFS_platformStricmp(const char *x, const char *y)
{
332
333
334
#if (defined _MSC_VER)
return(stricmp(x, y));
#else
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
int ux, uy;
do
{
ux = toupper((int) *x);
uy = toupper((int) *y);
if (ux > uy)
return(1);
else if (ux < uy)
return(-1);
x++;
y++;
} while ((ux) && (uy));
return(0);
350
#endif
351
352
353
} /* __PHYSFS_platformStricmp */
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
int __PHYSFS_platformStrnicmp(const char *x, const char *y, PHYSFS_uint32 len)
{
#if (defined _MSC_VER)
return(strnicmp(x, y, (int) len));
#else
int ux, uy;
if (!len)
return(0);
do
{
ux = toupper((int) *x);
uy = toupper((int) *y);
if (ux > uy)
return(1);
else if (ux < uy)
return(-1);
x++;
y++;
len--;
} while ((ux) && (uy) && (len));
return(0);
#endif
} /* __PHYSFS_platformStricmp */
382
383
int __PHYSFS_platformExists(const char *fname)
{
384
385
386
387
388
BAIL_IF_MACRO
(
GetFileAttributes(fname) == PHYSFS_INVALID_FILE_ATTRIBUTES,
win32strerror(), 0
);
389
return(1);
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
} /* __PHYSFS_platformExists */
int __PHYSFS_platformIsSymLink(const char *fname)
{
return(0); /* no symlinks on win32. */
} /* __PHYSFS_platformIsSymlink */
int __PHYSFS_platformIsDirectory(const char *fname)
{
return((GetFileAttributes(fname) & FILE_ATTRIBUTE_DIRECTORY) != 0);
} /* __PHYSFS_platformIsDirectory */
char *__PHYSFS_platformCvtToDependent(const char *prepend,
const char *dirName,
const char *append)
{
int len = ((prepend) ? strlen(prepend) : 0) +
((append) ? strlen(append) : 0) +
strlen(dirName) + 1;
412
char *retval = (char *) allocator.Malloc(len);
413
char *p;
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
if (prepend)
strcpy(retval, prepend);
else
retval[0] = '\0';
strcat(retval, dirName);
if (append)
strcat(retval, append);
for (p = strchr(retval, '/'); p != NULL; p = strchr(p + 1, '/'))
*p = '\\';
return(retval);
} /* __PHYSFS_platformCvtToDependent */
/* Much like my college days, try to sleep for 10 milliseconds at a time... */
void __PHYSFS_platformTimeslice(void)
{
Sleep(10);
} /* __PHYSFS_platformTimeslice */
441
442
443
444
void __PHYSFS_platformEnumerateFiles(const char *dirname,
int omitSymLinks,
PHYSFS_StringCallback callback,
void *callbackdata)
445
446
447
{
HANDLE dir;
WIN32_FIND_DATA ent;
448
size_t len = strlen(dirname);
449
char *SearchPath;
450
451
/* Allocate a new string for path, maybe '\\', "*", and NULL terminator */
452
SearchPath = (char *) alloca(len + 3);
453
454
if (SearchPath == NULL)
return;
455
456
457
/* Copy current dirname */
strcpy(SearchPath, dirname);
458
459
/* if there's no '\\' at the end of the path, stick one in there. */
460
if (SearchPath[len - 1] != '\\')
461
{
462
463
SearchPath[len++] = '\\';
SearchPath[len] = '\0';
464
465
} /* if */
466
467
/* Append the "*" to the end of the string */
strcat(SearchPath, "*");
468
469
dir = FindFirstFile(SearchPath, &ent);
470
471
if (dir == INVALID_HANDLE_VALUE)
return;
472
473
do
474
475
476
477
478
479
480
{
if (strcmp(ent.cFileName, ".") == 0)
continue;
if (strcmp(ent.cFileName, "..") == 0)
continue;
481
callback(callbackdata, ent.cFileName);
482
} while (FindNextFile(dir, &ent) != 0);
483
484
485
486
487
488
489
FindClose(dir);
} /* __PHYSFS_platformEnumerateFiles */
char *__PHYSFS_platformCurrentDir(void)
{
490
LPTSTR retval;
491
492
DWORD buflen = 0;
493
buflen = GetCurrentDirectory(buflen, NULL);
494
retval = (LPTSTR) allocator.Malloc(sizeof (TCHAR) * (buflen + 2));
495
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
496
GetCurrentDirectory(buflen, retval);
497
498
499
500
if (retval[buflen - 2] != '\\')
strcat(retval, "\\");
501
502
503
504
return((char *) retval);
} /* __PHYSFS_platformCurrentDir */
505
/* this could probably use a cleanup. */
506
507
char *__PHYSFS_platformRealPath(const char *path)
{
508
509
510
511
512
513
char *retval = NULL;
char *p = NULL;
BAIL_IF_MACRO(path == NULL, ERR_INVALID_ARGUMENT, NULL);
BAIL_IF_MACRO(*path == '\0', ERR_INVALID_ARGUMENT, NULL);
514
retval = (char *) allocator.Malloc(MAX_PATH);
515
516
517
518
519
520
521
522
523
524
525
526
527
528
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
/*
* If in \\server\path format, it's already an absolute path.
* We'll need to check for "." and ".." dirs, though, just in case.
*/
if ((path[0] == '\\') && (path[1] == '\\'))
strcpy(retval, path);
else
{
char *currentDir = __PHYSFS_platformCurrentDir();
if (currentDir == NULL)
{
529
allocator.Free(retval);
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
} /* if */
if (path[1] == ':') /* drive letter specified? */
{
/*
* Apparently, "D:mypath" is the same as "D:\\mypath" if
* D: is not the current drive. However, if D: is the
* current drive, then "D:mypath" is a relative path. Ugh.
*/
if (path[2] == '\\') /* maybe an absolute path? */
strcpy(retval, path);
else /* definitely an absolute path. */
{
if (path[0] == currentDir[0]) /* current drive; relative. */
{
strcpy(retval, currentDir);
strcat(retval, path + 2);
} /* if */
else /* not current drive; absolute. */
{
retval[0] = path[0];
retval[1] = ':';
retval[2] = '\\';
strcpy(retval + 3, path + 2);
} /* else */
} /* else */
} /* if */
else /* no drive letter specified. */
{
if (path[0] == '\\') /* absolute path. */
{
retval[0] = currentDir[0];
retval[1] = ':';
strcpy(retval + 2, path);
} /* if */
else
{
strcpy(retval, currentDir);
strcat(retval, path);
} /* else */
} /* else */
575
allocator.Free(currentDir);
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
} /* else */
/* (whew.) Ok, now take out "." and ".." path entries... */
p = retval;
while ( (p = strstr(p, "\\.")) != NULL)
{
/* it's a "." entry that doesn't end the string. */
if (p[2] == '\\')
memmove(p + 1, p + 3, strlen(p + 3) + 1);
/* it's a "." entry that ends the string. */
else if (p[2] == '\0')
p[0] = '\0';
/* it's a ".." entry. */
else if (p[2] == '.')
{
char *prevEntry = p - 1;
while ((prevEntry != retval) && (*prevEntry != '\\'))
prevEntry--;
if (prevEntry == retval) /* make it look like a "." entry. */
memmove(p + 1, p + 2, strlen(p + 2) + 1);
else
{
if (p[3] != '\0') /* doesn't end string. */
*prevEntry = '\0';
else /* ends string. */
memmove(prevEntry + 1, p + 4, strlen(p + 4) + 1);
p = prevEntry;
} /* else */
} /* else if */
else
{
p++; /* look past current char. */
} /* else */
} /* while */
/* shrink the retval's memory block if possible... */
618
p = (char *) allocator.Realloc(retval, strlen(retval) + 1);
619
620
621
622
if (p != NULL)
retval = p;
return(retval);
623
624
625
626
627
} /* __PHYSFS_platformRealPath */
int __PHYSFS_platformMkDir(const char *path)
{
628
DWORD rc = CreateDirectory(path, NULL);
629
630
631
632
BAIL_IF_MACRO(rc == 0, win32strerror(), 0);
return(1);
} /* __PHYSFS_platformMkDir */
633
634
635
/*
* Get OS info and save the important parts.
636
637
638
*
* Returns non-zero if successful, otherwise it returns zero on failure.
*/
639
static int getOSInfo(void)
640
{
641
642
#if 0 /* we don't actually use this at the moment, but may in the future. */
OSVERSIONINFO OSVersionInfo; /* Information about the OS */
643
OSVersionInfo.dwOSVersionInfoSize = sizeof(OSVersionInfo);
644
BAIL_IF_MACRO(!GetVersionEx(&OSVersionInfo), win32strerror(), 0);
645
646
/* Set to TRUE if we are runnign a WinNT based OS 4.0 or greater */
647
648
649
runningNT = ((OSVersionInfo.dwPlatformId == VER_PLATFORM_WIN32_NT) &&
(OSVersionInfo.dwMajorVersion >= 4));
#endif
650
651
652
return(1);
} /* getOSInfo */
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
/*
* Some things we want/need are in external DLLs that may or may not be
* available, based on the operating system, etc. This function loads those
* libraries and hunts down the needed pointers.
*
* Libraries that are one-shot deals, or better loaded as needed, are loaded
* elsewhere (see determineUserDir()).
*
* Returns zero if a needed library couldn't load, non-zero if we have enough
* to go on (which means some useful but non-crucial libraries may _NOT_ be
* loaded; check the related module-scope variables).
*/
static int loadLibraries(void)
668
{
669
670
/* If this get unwieldy, make it table driven. */
671
int allNeededLibrariesLoaded = 1; /* flip to zero as needed. */
672
673
674
libKernel32 = LoadLibrary("kernel32.dll");
if (libKernel32)
675
{
676
677
pGetFileAttributesEx = (LPFNGETFILEATTRIBUTESEX)
GetProcAddress(libKernel32, "GetFileAttributesExA");
678
} /* if */
679
680
681
682
683
684
/* add other DLLs here... */
/* see if there's any reason to keep kernel32.dll around... */
if (libKernel32)
685
{
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
if ((pGetFileAttributesEx == NULL) /* && (somethingElse == NULL) */ )
{
FreeLibrary(libKernel32);
libKernel32 = NULL;
} /* if */
} /* if */
return(allNeededLibrariesLoaded);
} /* loadLibraries */
int __PHYSFS_platformInit(void)
{
BAIL_IF_MACRO(!getOSInfo(), NULL, 0);
BAIL_IF_MACRO(!loadLibraries(), NULL, 0);
BAIL_IF_MACRO(!determineUserDir(), NULL, 0);
return(1); /* It's all good */
} /* __PHYSFS_platformInit */
705
706
707
708
int __PHYSFS_platformDeinit(void)
{
709
if (userDir != NULL)
710
{
711
allocator.Free(userDir);
712
userDir = NULL;
713
} /* if */
714
715
716
717
718
719
720
if (libKernel32)
{
FreeLibrary(libKernel32);
libKernel32 = NULL;
} /* if */
721
722
723
724
725
726
727
728
729
730
731
732
return(1); /* It's all good */
} /* __PHYSFS_platformDeinit */
static void *doOpen(const char *fname, DWORD mode, DWORD creation, int rdonly)
{
HANDLE fileHandle;
win32file *retval;
fileHandle = CreateFile(fname, mode, FILE_SHARE_READ, NULL,
creation, FILE_ATTRIBUTE_NORMAL, NULL);
733
734
BAIL_IF_MACRO
(
735
fileHandle == INVALID_HANDLE_VALUE,
736
737
win32strerror(), NULL
);
738
739
retval = (win32file *) allocator.Malloc(sizeof (win32file));
740
if (retval == NULL)
741
{
742
743
CloseHandle(fileHandle);
BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
744
} /* if */
745
746
747
748
749
750
retval->readonly = rdonly;
retval->handle = fileHandle;
return(retval);
} /* doOpen */
751
752
753
void *__PHYSFS_platformOpenRead(const char *filename)
{
754
755
return(doOpen(filename, GENERIC_READ, OPEN_EXISTING, 1));
} /* __PHYSFS_platformOpenRead */
756
757
758
759
void *__PHYSFS_platformOpenWrite(const char *filename)
{
760
761
return(doOpen(filename, GENERIC_WRITE, CREATE_ALWAYS, 0));
} /* __PHYSFS_platformOpenWrite */
762
763
764
765
void *__PHYSFS_platformOpenAppend(const char *filename)
{
766
767
768
769
void *retval = doOpen(filename, GENERIC_WRITE, OPEN_ALWAYS, 0);
if (retval != NULL)
{
HANDLE h = ((win32file *) retval)->handle;
770
771
DWORD rc = SetFilePointer(h, 0, NULL, FILE_END);
if (rc == PHYSFS_INVALID_SET_FILE_POINTER)
772
773
774
{
const char *err = win32strerror();
CloseHandle(h);
775
allocator.Free(retval);
776
777
778
779
780
781
BAIL_MACRO(err, NULL);
} /* if */
} /* if */
return(retval);
} /* __PHYSFS_platformOpenAppend */
782
783
784
785
786
PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buffer,
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
787
HANDLE Handle = ((win32file *) opaque)->handle;
788
789
790
791
DWORD CountOfBytesRead;
PHYSFS_sint64 retval;
/* Read data from the file */
792
/* !!! FIXME: uint32 might be a greater # than DWORD */
793
if(!ReadFile(Handle, buffer, count * size, &CountOfBytesRead, NULL))
794
{
795
796
BAIL_MACRO(win32strerror(), -1);
} /* if */
797
798
799
else
{
/* Return the number of "objects" read. */
800
/* !!! FIXME: What if not the right amount of bytes was read to make an object? */
801
retval = CountOfBytesRead / size;
802
} /* else */
803
804
805
806
return(retval);
} /* __PHYSFS_platformRead */
807
808
PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buffer,
809
810
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
811
HANDLE Handle = ((win32file *) opaque)->handle;
812
813
814
815
DWORD CountOfBytesWritten;
PHYSFS_sint64 retval;
/* Read data from the file */
816
/* !!! FIXME: uint32 might be a greater # than DWORD */
817
if(!WriteFile(Handle, buffer, count * size, &CountOfBytesWritten, NULL))
818
{
819
820
BAIL_MACRO(win32strerror(), -1);
} /* if */
821
822
823
else
{
/* Return the number of "objects" read. */
824
/* !!! FIXME: What if not the right number of bytes was written? */
825
retval = CountOfBytesWritten / size;
826
} /* else */
827
828
829
830
return(retval);
} /* __PHYSFS_platformWrite */
831
832
833
int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)
{
834
HANDLE Handle = ((win32file *) opaque)->handle;
835
DWORD HighOrderPos;
836
DWORD *pHighOrderPos;
837
DWORD rc;
838
839
840
841
/* Get the high order 32-bits of the position */
HighOrderPos = HIGHORDER_UINT64(pos);
842
843
844
845
846
847
848
849
850
851
852
853
854
855
/*
* MSDN: "If you do not need the high-order 32 bits, this
* pointer must be set to NULL."
*/
pHighOrderPos = (HighOrderPos) ? &HighOrderPos : NULL;
/*
* !!! FIXME: MSDN: "Windows Me/98/95: If the pointer
* !!! FIXME: lpDistanceToMoveHigh is not NULL, then it must
* !!! FIXME: point to either 0, INVALID_SET_FILE_POINTER, or
* !!! FIXME: the sign extension of the value of lDistanceToMove.
* !!! FIXME: Any other value will be rejected."
*/
856
/* Move pointer "pos" count from start of file */
857
rc = SetFilePointer(Handle, LOWORDER_UINT64(pos),
858
pHighOrderPos, FILE_BEGIN);
859
860
861
862
if ( (rc == PHYSFS_INVALID_SET_FILE_POINTER) &&
(GetLastError() != NO_ERROR) )
{
863
BAIL_MACRO(win32strerror(), 0);
864
865
} /* if */
866
867
return(1); /* No error occured */
} /* __PHYSFS_platformSeek */
868
869
870
871
PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)
{
872
HANDLE Handle = ((win32file *) opaque)->handle;
873
874
DWORD HighPos = 0;
DWORD LowPos;
875
876
877
PHYSFS_sint64 retval;
/* Get current position */
878
LowPos = SetFilePointer(Handle, 0, &HighPos, FILE_CURRENT);
879
880
if ( (LowPos == PHYSFS_INVALID_SET_FILE_POINTER) &&
(GetLastError() != NO_ERROR) )
881
{
882
883
BAIL_MACRO(win32strerror(), 0);
} /* if */
884
885
886
else
{
/* Combine the high/low order to create the 64-bit position value */
887
888
889
890
891
892
retval = (((PHYSFS_uint64) HighPos) << 32) | LowPos;
assert(retval >= 0);
} /* else */
return(retval);
} /* __PHYSFS_platformTell */
893
894
895
PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)
896
{
897
HANDLE Handle = ((win32file *) opaque)->handle;
898
899
DWORD SizeHigh;
DWORD SizeLow;
900
901
PHYSFS_sint64 retval;
902
SizeLow = GetFileSize(Handle, &SizeHigh);
903
904
if ( (SizeLow == PHYSFS_INVALID_SET_FILE_POINTER) &&
(GetLastError() != NO_ERROR) )
905
{
906
907
BAIL_MACRO(win32strerror(), -1);
} /* if */
908
909
910
else
{
/* Combine the high/low order to create the 64-bit position value */
911
912
retval = (((PHYSFS_uint64) SizeHigh) << 32) | SizeLow;
assert(retval >= 0);
913
} /* else */
914
915
916
917
return(retval);
} /* __PHYSFS_platformFileLength */
918
919
920
921
922
923
924
int __PHYSFS_platformEOF(void *opaque)
{
PHYSFS_sint64 FilePosition;
int retval = 0;
/* Get the current position in the file */
925
if ((FilePosition = __PHYSFS_platformTell(opaque)) != 0)
926
{
927
928
/* Non-zero if EOF is equal to the file length */
retval = FilePosition == __PHYSFS_platformFileLength(opaque);
929
930
931
932
} /* if */
return(retval);
} /* __PHYSFS_platformEOF */
933
934
935
936
int __PHYSFS_platformFlush(void *opaque)
{
937
938
939
win32file *fh = ((win32file *) opaque);
if (!fh->readonly)
BAIL_IF_MACRO(!FlushFileBuffers(fh->handle), win32strerror(), 0);
940
941
942
return(1);
} /* __PHYSFS_platformFlush */
943
944
945
946
int __PHYSFS_platformClose(void *opaque)
{
947
948
HANDLE Handle = ((win32file *) opaque)->handle;
BAIL_IF_MACRO(!CloseHandle(Handle), win32strerror(), 0);
949
allocator.Free(opaque);
950
951
return(1);
} /* __PHYSFS_platformClose */
952
953
954
955
956
int __PHYSFS_platformDelete(const char *path)
{
/* If filename is a folder */
957
if (GetFileAttributes(path) == FILE_ATTRIBUTE_DIRECTORY)
958
{
959
960
BAIL_IF_MACRO(!RemoveDirectory(path), win32strerror(), 0);
} /* if */
961
962
else
{
963
964
BAIL_IF_MACRO(!DeleteFile(path), win32strerror(), 0);
} /* else */
965
966
967
return(1); /* if you got here, it worked. */
} /* __PHYSFS_platformDelete */
968
969
970
971
void *__PHYSFS_platformCreateMutex(void)
{
972
973
974
return((void *) CreateMutex(NULL, FALSE, NULL));
} /* __PHYSFS_platformCreateMutex */
975
976
977
void __PHYSFS_platformDestroyMutex(void *mutex)
{
978
979
980
CloseHandle((HANDLE) mutex);
} /* __PHYSFS_platformDestroyMutex */
981
982
983
int __PHYSFS_platformGrabMutex(void *mutex)
{
984
985
return(WaitForSingleObject((HANDLE) mutex, INFINITE) != WAIT_FAILED);
} /* __PHYSFS_platformGrabMutex */
986
987
988
989
void __PHYSFS_platformReleaseMutex(void *mutex)
{
990
991
992
ReleaseMutex((HANDLE) mutex);
} /* __PHYSFS_platformReleaseMutex */
993
994
static PHYSFS_sint64 FileTimeToPhysfsTime(const FILETIME *ft)
995
996
997
{
SYSTEMTIME st_utc;
SYSTEMTIME st_localtz;
998
999
1000
TIME_ZONE_INFORMATION tzi;
DWORD tzid;
PHYSFS_sint64 retval;