/
win32.c
1071 lines (862 loc) · 29.7 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
#include <windows.h>
#include <stdio.h>
15
#include <stdlib.h>
16
17
#include <string.h>
#include <errno.h>
18
#include <ctype.h>
19
#include <time.h>
20
#include <assert.h>
21
22
23
24
#define __PHYSICSFS_INTERNAL__
#include "physfs_internal.h"
25
26
#ifdef _MSC_VER /* for Cygwin, etc. */
#define alloca _alloca
27
28
#endif
29
30
31
#define LOWORDER_UINT64(pos) (PHYSFS_uint32)(pos & 0x00000000FFFFFFFF)
#define HIGHORDER_UINT64(pos) (PHYSFS_uint32)(pos & 0xFFFFFFFF00000000)
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
/* 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;
49
50
51
52
53
const char *__PHYSFS_platformDirSeparator = "\\";
static LPFNGETFILEATTRIBUTESEX pGetFileAttributesEx = NULL;
static HANDLE libKernel32 = NULL;
static char *userDir = NULL;
54
55
56
57
58
59
/*
* 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
*/
60
#ifndef INVALID_SET_FILE_POINTER
61
# define INVALID_SET_FILE_POINTER 0xFFFFFFFF
62
63
#endif
64
65
66
67
68
69
/* just in case... */
#ifndef INVALID_FILE_ATTRIBUTES
# define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF
#endif
70
71
72
73
74
75
76
77
78
79
/*
* 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];
80
TCHAR *ptr = msgbuf;
81
82
83
84
85
86
87
88
89
90
91
92
FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
msgbuf,
sizeof (msgbuf) / sizeof (TCHAR),
NULL
);
93
94
95
96
97
98
99
100
101
102
/* chop off newlines. */
for (ptr = msgbuf; *ptr; ptr++)
{
if ((*ptr == '\n') || (*ptr == '\r'))
{
*ptr = ' ';
break;
} /* if */
} /* for */
103
104
105
106
return((const char *) msgbuf);
} /* win32strerror */
107
static char *getExePath(const char *argv0)
108
{
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
DWORD buflen;
int success = 0;
char *ptr = NULL;
char *retval = (char *) malloc(sizeof (TCHAR) * (MAX_PATH + 1));
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)
__PHYSFS_setError("WIN32: GetModuleFileName() got truncated.");
else
{
ptr = strrchr(retval, '\\');
if (ptr == NULL)
__PHYSFS_setError("WIN32: GetModuleFileName() had no dir.");
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)
__PHYSFS_setError("WIN32: argv0 is NULL.");
else
{
buflen = SearchPath(NULL, argv0, NULL, MAX_PATH+1, retval, &ptr);
if (buflen == 0)
__PHYSFS_setError(win32strerror());
else if (buflen > MAX_PATH)
__PHYSFS_setError("Win32: SearchPath() got truncated.");
else
success = 1;
} /* else */
} /* if */
if (!success)
{
free(retval);
return(NULL); /* physfs error message will be set, above. */
} /* if */
/* free up the bytes we didn't actually use. */
ptr = (char *) realloc(retval, strlen(retval) + 1);
if (ptr != NULL)
retval = ptr;
return(retval); /* w00t. */
} /* getExePath */
171
172
173
/*
174
175
176
* 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.
177
*
178
179
180
181
* 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.
182
*/
183
static int determineUserDir(void)
184
{
185
DWORD psize = 0;
186
187
char dummy[1];
BOOL rc = 0;
188
189
190
191
HANDLE processHandle; /* Current process handle */
HANDLE accessToken = NULL; /* Security handle to process */
LPFNGETUSERPROFILEDIR GetUserProfileDirectory;
HMODULE lib;
192
193
assert(userDir == NULL);
194
195
196
197
198
199
200
/*
* 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.
*/
201
202
203
204
205
206
lib = LoadLibrary("userenv.dll");
if (lib)
{
/* !!! FIXME: Handle Unicode? */
GetUserProfileDirectory = (LPFNGETUSERPROFILEDIR)
207
GetProcAddress(lib, "GetUserProfileDirectoryA");
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
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 */
userDir = (char *) malloc(psize);
if (userDir != NULL)
{
if (!GetUserProfileDirectory(accessToken, userDir, &psize))
{
free(userDir);
userDir = NULL;
} /* if */
} /* else */
} /* if */
232
233
234
CloseHandle(accessToken);
} /* if */
235
236
FreeLibrary(lib);
237
238
} /* if */
239
if (userDir == NULL) /* couldn't get profile for some reason. */
240
{
241
242
243
/* Might just be a non-NT system; resort to the basedir. */
userDir = getExePath(NULL);
BAIL_IF_MACRO(userDir == NULL, NULL, 0); /* STILL failed?! */
244
} /* if */
245
246
247
return(1); /* We made it: hit the showers. */
} /* determineUserDir */
248
249
250
static BOOL mediaInDrive(const char *driveLetter)
251
{
252
253
254
UINT oldErrorMode;
DWORD dummyValue;
BOOL returnValue;
255
256
/* Prevent windows warning message to appear when checking media size */
257
oldErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
258
259
/* If this function succeeds, there's media in the drive */
260
returnValue = GetDiskFreeSpace(driveLetter, &dummyValue, &dummyValue, &dummyValue, &dummyValue);
261
262
/* Revert back to old windows error handler */
263
264
265
266
SetErrorMode(oldErrorMode);
return(returnValue);
} /* mediaInDrive */
267
268
269
270
271
272
273
274
275
276
char **__PHYSFS_platformDetectAvailableCDs(void)
{
char **retval = (char **) malloc(sizeof (char *));
int cd_count = 1; /* We count the NULL entry. */
char drive_str[4] = "x:\\";
for (drive_str[0] = 'A'; drive_str[0] <= 'Z'; drive_str[0]++)
{
277
if (GetDriveType(drive_str) == DRIVE_CDROM && mediaInDrive(drive_str))
278
{
279
char **tmp = realloc(retval, sizeof (char *) * (cd_count + 1));
280
281
282
if (tmp)
{
retval = tmp;
283
284
retval[cd_count - 1] = (char *) malloc(4);
if (retval[cd_count - 1])
285
{
286
strcpy(retval[cd_count - 1], drive_str);
287
288
289
290
291
292
293
294
295
296
297
cd_count++;
} /* if */
} /* if */
} /* if */
} /* for */
retval[cd_count - 1] = NULL;
return(retval);
} /* __PHYSFS_detectAvailableCDs */
298
299
300
301
302
char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
if (strchr(argv0, '\\') != NULL) /* default behaviour can handle this. */
return(NULL);
303
return(getExePath(argv0));
304
305
306
307
308
} /* __PHYSFS_platformCalcBaseDir */
char *__PHYSFS_platformGetUserName(void)
{
309
DWORD bufsize = 0;
310
311
312
313
314
315
316
317
LPTSTR retval = NULL;
if (GetUserName(NULL, &bufsize) == 0) /* This SHOULD fail. */
{
retval = (LPTSTR) malloc(bufsize);
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
if (GetUserName(retval, &bufsize) == 0) /* ?! */
{
318
__PHYSFS_setError(win32strerror());
319
320
321
322
323
324
325
326
327
328
329
free(retval);
retval = NULL;
} /* if */
} /* if */
return((char *) retval);
} /* __PHYSFS_platformGetUserName */
char *__PHYSFS_platformGetUserDir(void)
{
330
char *retval = (char *) malloc(strlen(userDir) + 1);
331
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
332
333
strcpy(retval, userDir); /* calculated at init time. */
return(retval);
334
335
336
} /* __PHYSFS_platformGetUserDir */
337
PHYSFS_uint64 __PHYSFS_platformGetThreadID(void)
338
{
339
return((PHYSFS_uint64) GetCurrentThreadId());
340
341
342
} /* __PHYSFS_platformGetThreadID */
343
/* ...make this Cygwin AND Visual C friendly... */
344
345
int __PHYSFS_platformStricmp(const char *x, const char *y)
{
346
347
348
#if (defined _MSC_VER)
return(stricmp(x, y));
#else
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
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);
364
#endif
365
366
367
368
369
} /* __PHYSFS_platformStricmp */
int __PHYSFS_platformExists(const char *fname)
{
370
return(GetFileAttributes(fname) != INVALID_FILE_ATTRIBUTES);
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
} /* __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;
char *retval = malloc(len);
394
char *p;
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
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 */
LinkedStringList *__PHYSFS_platformEnumerateFiles(const char *dirname,
int omitSymLinks)
{
LinkedStringList *retval = NULL;
LinkedStringList *l = NULL;
LinkedStringList *prev = NULL;
HANDLE dir;
WIN32_FIND_DATA ent;
430
char *SearchPath;
431
size_t len = strlen(dirname);
432
433
/* Allocate a new string for path, maybe '\\', "*", and NULL terminator */
434
SearchPath = (char *) alloca(len + 3);
435
436
BAIL_IF_MACRO(SearchPath == NULL, ERR_OUT_OF_MEMORY, NULL);
437
438
/* Copy current dirname */
strcpy(SearchPath, dirname);
439
440
/* if there's no '\\' at the end of the path, stick one in there. */
441
if (SearchPath[len - 1] != '\\')
442
{
443
444
SearchPath[len++] = '\\';
SearchPath[len] = '\0';
445
446
} /* if */
447
448
/* Append the "*" to the end of the string */
strcat(SearchPath, "*");
449
450
dir = FindFirstFile(SearchPath, &ent);
451
452
BAIL_IF_MACRO(dir == INVALID_HANDLE_VALUE, win32strerror(), NULL);
453
do
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
{
if (strcmp(ent.cFileName, ".") == 0)
continue;
if (strcmp(ent.cFileName, "..") == 0)
continue;
l = (LinkedStringList *) malloc(sizeof (LinkedStringList));
if (l == NULL)
break;
l->str = (char *) malloc(strlen(ent.cFileName) + 1);
if (l->str == NULL)
{
free(l);
break;
} /* if */
strcpy(l->str, ent.cFileName);
if (retval == NULL)
retval = l;
else
prev->next = l;
prev = l;
l->next = NULL;
481
} while (FindNextFile(dir, &ent) != 0);
482
483
484
485
486
487
488
489
FindClose(dir);
return(retval);
} /* __PHYSFS_platformEnumerateFiles */
char *__PHYSFS_platformCurrentDir(void)
{
490
LPTSTR retval;
491
492
DWORD buflen = 0;
493
buflen = GetCurrentDirectory(buflen, NULL);
494
495
retval = (LPTSTR) malloc(sizeof (TCHAR) * (buflen + 2));
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
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
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
575
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
618
619
620
621
622
char *retval = NULL;
char *p = NULL;
BAIL_IF_MACRO(path == NULL, ERR_INVALID_ARGUMENT, NULL);
BAIL_IF_MACRO(*path == '\0', ERR_INVALID_ARGUMENT, NULL);
retval = (char *) malloc(MAX_PATH);
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)
{
free(retval);
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 */
free(currentDir);
} /* 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... */
p = (char *) realloc(retval, strlen(retval) + 1);
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
/* !!! FIXME: Make this table driven? */
int allNeededLibrariesLoaded = 1; /* flip to zero as needed. */
671
672
673
libKernel32 = LoadLibrary("kernel32.dll");
if (libKernel32)
674
{
675
676
pGetFileAttributesEx = (LPFNGETFILEATTRIBUTESEX)
GetProcAddress(libKernel32, "GetFileAttributesExA");
677
} /* if */
678
679
680
681
682
683
/* add other DLLs here... */
/* see if there's any reason to keep kernel32.dll around... */
if (libKernel32)
684
{
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
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 */
704
705
706
707
int __PHYSFS_platformDeinit(void)
{
708
if (userDir != NULL)
709
{
710
711
free(userDir);
userDir = NULL;
712
} /* if */
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
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);
BAIL_IF_MACRO(fileHandle == INVALID_HANDLE_VALUE, win32strerror(), NULL);
retval = malloc(sizeof (win32file));
if (retval == NULL)
730
{
731
732
CloseHandle(fileHandle);
BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
733
} /* if */
734
735
736
737
738
739
retval->readonly = rdonly;
retval->handle = fileHandle;
return(retval);
} /* doOpen */
740
741
742
void *__PHYSFS_platformOpenRead(const char *filename)
{
743
744
return(doOpen(filename, GENERIC_READ, OPEN_EXISTING, 1));
} /* __PHYSFS_platformOpenRead */
745
746
747
748
void *__PHYSFS_platformOpenWrite(const char *filename)
{
749
750
return(doOpen(filename, GENERIC_WRITE, CREATE_ALWAYS, 0));
} /* __PHYSFS_platformOpenWrite */
751
752
753
754
void *__PHYSFS_platformOpenAppend(const char *filename)
{
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
void *retval = doOpen(filename, GENERIC_WRITE, OPEN_ALWAYS, 0);
if (retval != NULL)
{
HANDLE h = ((win32file *) retval)->handle;
if (SetFilePointer(h, 0, NULL, FILE_END) == INVALID_SET_FILE_POINTER)
{
const char *err = win32strerror();
CloseHandle(h);
free(retval);
BAIL_MACRO(err, NULL);
} /* if */
} /* if */
return(retval);
} /* __PHYSFS_platformOpenAppend */
770
771
772
773
774
PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buffer,
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
775
HANDLE FileHandle = ((win32file *) opaque)->handle;
776
777
778
779
780
781
782
DWORD CountOfBytesRead;
PHYSFS_sint64 retval;
/* Read data from the file */
/*!!! - uint32 might be a greater # than DWORD */
if(!ReadFile(FileHandle, buffer, count * size, &CountOfBytesRead, NULL))
{
783
784
BAIL_MACRO(win32strerror(), -1);
} /* if */
785
786
787
788
789
else
{
/* Return the number of "objects" read. */
/* !!! - What if not the right amount of bytes was read to make an object? */
retval = CountOfBytesRead / size;
790
} /* else */
791
792
793
794
return(retval);
} /* __PHYSFS_platformRead */
795
796
PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buffer,
797
798
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
799
HANDLE FileHandle = ((win32file *) opaque)->handle;
800
801
802
803
804
805
806
DWORD CountOfBytesWritten;
PHYSFS_sint64 retval;
/* Read data from the file */
/*!!! - uint32 might be a greater # than DWORD */
if(!WriteFile(FileHandle, buffer, count * size, &CountOfBytesWritten, NULL))
{
807
808
BAIL_MACRO(win32strerror(), -1);
} /* if */
809
810
811
812
813
else
{
/* Return the number of "objects" read. */
/*!!! - What if not the right number of bytes was written? */
retval = CountOfBytesWritten / size;
814
} /* else */
815
816
817
818
return(retval);
} /* __PHYSFS_platformWrite */
819
820
821
int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)
{
822
HANDLE FileHandle = ((win32file *) opaque)->handle;
823
DWORD HighOrderPos;
824
DWORD rc;
825
826
827
828
829
830
/* Get the high order 32-bits of the position */
HighOrderPos = HIGHORDER_UINT64(pos);
/*!!! SetFilePointer needs a signed 64-bit value. */
/* Move pointer "pos" count from start of file */
831
832
rc = SetFilePointer(FileHandle, LOWORDER_UINT64(pos),
&HighOrderPos, FILE_BEGIN);
833
834
835
836
837
838
if ((rc == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
BAIL_MACRO(win32strerror(), 0);
return(1); /* No error occured */
} /* __PHYSFS_platformSeek */
839
840
841
842
PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)
{
843
844
845
HANDLE FileHandle = ((win32file *) opaque)->handle;
DWORD HighPos = 0;
DWORD LowPos;
846
847
848
PHYSFS_sint64 retval;
/* Get current position */
849
850
LowPos = SetFilePointer(FileHandle, 0, &HighPos, FILE_CURRENT);
if ((LowPos == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
851
{
852
853
BAIL_MACRO(win32strerror(), 0);
} /* if */
854
855
856
else
{
/* Combine the high/low order to create the 64-bit position value */
857
858
859
860
861
862
retval = (((PHYSFS_uint64) HighPos) << 32) | LowPos;
assert(retval >= 0);
} /* else */
return(retval);
} /* __PHYSFS_platformTell */
863
864
865
PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)
866
{
867
868
869
HANDLE FileHandle = ((win32file *) opaque)->handle;
DWORD SizeHigh;
DWORD SizeLow;
870
871
PHYSFS_sint64 retval;
872
873
SizeLow = GetFileSize(FileHandle, &SizeHigh);
if ((SizeLow == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
874
{
875
876
BAIL_MACRO(win32strerror(), -1);
} /* if */
877
878
879
else
{
/* Combine the high/low order to create the 64-bit position value */
880
881
retval = (((PHYSFS_uint64) SizeHigh) << 32) | SizeLow;
assert(retval >= 0);
882
} /* else */
883
884
885
886
return(retval);
} /* __PHYSFS_platformFileLength */
887
888
889
890
891
892
893
int __PHYSFS_platformEOF(void *opaque)
{
PHYSFS_sint64 FilePosition;
int retval = 0;
/* Get the current position in the file */
894
if ((FilePosition = __PHYSFS_platformTell(opaque)) != 0)
895
{
896
897
/* Non-zero if EOF is equal to the file length */
retval = FilePosition == __PHYSFS_platformFileLength(opaque);
898
899
900
901
} /* if */
return(retval);
} /* __PHYSFS_platformEOF */
902
903
904
905
int __PHYSFS_platformFlush(void *opaque)
{
906
907
908
win32file *fh = ((win32file *) opaque);
if (!fh->readonly)
BAIL_IF_MACRO(!FlushFileBuffers(fh->handle), win32strerror(), 0);
909
910
911
return(1);
} /* __PHYSFS_platformFlush */
912
913
914
915
int __PHYSFS_platformClose(void *opaque)
{
916
917
918
919
920
HANDLE FileHandle = ((win32file *) opaque)->handle;
BAIL_IF_MACRO(!CloseHandle(FileHandle), win32strerror(), 0);
free(opaque);
return(1);
} /* __PHYSFS_platformClose */
921
922
923
924
925
int __PHYSFS_platformDelete(const char *path)
{
/* If filename is a folder */
926
if (GetFileAttributes(path) == FILE_ATTRIBUTE_DIRECTORY)
927
{
928
929
BAIL_IF_MACRO(!RemoveDirectory(path), win32strerror(), 0);
} /* if */
930
931
else
{
932
933
BAIL_IF_MACRO(!DeleteFile(path), win32strerror(), 0);
} /* else */
934
935
936
return(1); /* if you got here, it worked. */
} /* __PHYSFS_platformDelete */
937
938
939
940
void *__PHYSFS_platformCreateMutex(void)
{
941
942
943
return((void *) CreateMutex(NULL, FALSE, NULL));
} /* __PHYSFS_platformCreateMutex */
944
945
946
void __PHYSFS_platformDestroyMutex(void *mutex)
{
947
948
949
CloseHandle((HANDLE) mutex);
} /* __PHYSFS_platformDestroyMutex */
950
951
952
int __PHYSFS_platformGrabMutex(void *mutex)
{
953
954
return(WaitForSingleObject((HANDLE) mutex, INFINITE) != WAIT_FAILED);
} /* __PHYSFS_platformGrabMutex */
955
956
957
958
void __PHYSFS_platformReleaseMutex(void *mutex)
{
959
960
961
ReleaseMutex((HANDLE) mutex);
} /* __PHYSFS_platformReleaseMutex */
962
963
static PHYSFS_sint64 FileTimeToPhysfsTime(const FILETIME *ft)
964
965
966
{
SYSTEMTIME st_utc;
SYSTEMTIME st_localtz;
967
968
969
TIME_ZONE_INFORMATION tzi;
DWORD tzid;
PHYSFS_sint64 retval;
970
971
struct tm tm;
972
973
974
BAIL_IF_MACRO(!FileTimeToSystemTime(ft, &st_utc), win32strerror(), -1);
tzid = GetTimeZoneInformation(&tzi);
BAIL_IF_MACRO(tzid == TIME_ZONE_ID_INVALID, win32strerror(), -1);
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* (This API is unsupported and fails on non-NT systems. */
if (!SystemTimeToTzSpecificLocalTime(&tzi, &st_utc, &st_localtz))
{
/* do it by hand. Grumble... */
ULARGE_INTEGER ui64;
FILETIME new_ft;
ui64.LowPart = ft->dwLowDateTime;
ui64.HighPart = ft->dwHighDateTime;
if (tzid == TIME_ZONE_ID_STANDARD)
tzi.Bias += tzi.StandardBias;
else if (tzid == TIME_ZONE_ID_DAYLIGHT)
tzi.Bias += tzi.DaylightBias;
/* convert from minutes to 100-nanosecond increments... */
#if 0 /* For compilers that puke on 64-bit math. */
/* goddamn this is inefficient... */
while (tzi.Bias > 0)
{
DWORD tmp = ui64.LowPart - 60000000;
if ((ui64.LowPart < tmp) && (tmp > 60000000))
ui64.HighPart--;
ui64.LowPart = tmp;
tzi.Bias--;
} /* while */