/
win32.c
1132 lines (916 loc) · 31 KB
/
win32.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
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
382
383
384
385
386
387
388
389
390
391
392
393
394
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
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
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
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
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
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
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
/*
* Win32 support routines for PhysicsFS.
*
* Please see the file LICENSE in the source's root directory.
*
* This file written by Ryan C. Gordon, and made sane by Gregory S. Read.
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef WIN32
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <time.h>
#define __PHYSICSFS_INTERNAL__
#include "physfs_internal.h"
#if (defined _MSC_VER)
#define alloca(x) _alloca(x)
#elif (defined MINGW) /* scary...hopefully this is okay. */
#define alloca(x) __builtin_alloca(x)
#endif
#define LOWORDER_UINT64(pos) (PHYSFS_uint32) \
(pos & 0x00000000FFFFFFFF)
#define HIGHORDER_UINT64(pos) (PHYSFS_uint32) \
(((pos & 0xFFFFFFFF00000000) >> 32) & 0x00000000FFFFFFFF)
/* 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;
const char *__PHYSFS_platformDirSeparator = "\\";
static LPFNGETFILEATTRIBUTESEX pGetFileAttributesEx = NULL;
static HANDLE libKernel32 = NULL;
static char *userDir = NULL;
/*
* 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
*/
#define PHYSFS_INVALID_SET_FILE_POINTER 0xFFFFFFFF
/* just in case... */
#define PHYSFS_INVALID_FILE_ATTRIBUTES 0xFFFFFFFF
/*
* 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];
TCHAR *ptr = msgbuf;
FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
msgbuf,
sizeof (msgbuf) / sizeof (TCHAR),
NULL
);
/* chop off newlines. */
for (ptr = msgbuf; *ptr; ptr++)
{
if ((*ptr == '\n') || (*ptr == '\r'))
{
*ptr = ' ';
break;
} /* if */
} /* for */
return((const char *) msgbuf);
} /* win32strerror */
static char *getExePath(const char *argv0)
{
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(ERR_GETMODFN_TRUNC);
else
{
ptr = strrchr(retval, '\\');
if (ptr == NULL)
__PHYSFS_setError(ERR_GETMODFN_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(ERR_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(ERR_SEARCHPATH_TRUNC);
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 */
/*
* 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.
*
* 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.
*/
static int determineUserDir(void)
{
DWORD psize = 0;
char dummy[1];
BOOL rc = 0;
HANDLE processHandle; /* Current process handle */
HANDLE accessToken = NULL; /* Security handle to process */
LPFNGETUSERPROFILEDIR GetUserProfileDirectory;
HMODULE lib;
assert(userDir == NULL);
/*
* 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.
*/
lib = LoadLibrary("userenv.dll");
if (lib)
{
/* !!! FIXME: Handle Unicode? */
GetUserProfileDirectory = (LPFNGETUSERPROFILEDIR)
GetProcAddress(lib, "GetUserProfileDirectoryA");
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 */
CloseHandle(accessToken);
} /* if */
FreeLibrary(lib);
} /* if */
if (userDir == NULL) /* couldn't get profile for some reason. */
{
/* Might just be a non-NT system; resort to the basedir. */
userDir = getExePath(NULL);
BAIL_IF_MACRO(userDir == NULL, NULL, 0); /* STILL failed?! */
} /* if */
return(1); /* We made it: hit the showers. */
} /* determineUserDir */
static BOOL mediaInDrive(const char *drive)
{
UINT oldErrorMode;
DWORD tmp;
BOOL retval;
/* Prevent windows warning message appearing when checking media size */
oldErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
/* If this function succeeds, there's media in the drive */
retval = GetVolumeInformation(drive, NULL, 0, NULL, NULL, &tmp, NULL, 0);
/* Revert back to old windows error handler */
SetErrorMode(oldErrorMode);
return(retval);
} /* mediaInDrive */
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]++)
{
if (GetDriveType(drive_str) == DRIVE_CDROM && mediaInDrive(drive_str))
{
char **tmp = realloc(retval, sizeof (char *) * (cd_count + 1));
if (tmp)
{
retval = tmp;
retval[cd_count - 1] = (char *) malloc(4);
if (retval[cd_count - 1])
{
strcpy(retval[cd_count - 1], drive_str);
cd_count++;
} /* if */
} /* if */
} /* if */
} /* for */
retval[cd_count - 1] = NULL;
return(retval);
} /* __PHYSFS_detectAvailableCDs */
char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
if ((argv0 != NULL) && (strchr(argv0, '\\') != NULL))
return(NULL); /* default behaviour can handle this. */
return(getExePath(argv0));
} /* __PHYSFS_platformCalcBaseDir */
char *__PHYSFS_platformGetUserName(void)
{
DWORD bufsize = 0;
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) /* ?! */
{
__PHYSFS_setError(win32strerror());
free(retval);
retval = NULL;
} /* if */
} /* if */
return((char *) retval);
} /* __PHYSFS_platformGetUserName */
char *__PHYSFS_platformGetUserDir(void)
{
char *retval = (char *) malloc(strlen(userDir) + 1);
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
strcpy(retval, userDir); /* calculated at init time. */
return(retval);
} /* __PHYSFS_platformGetUserDir */
PHYSFS_uint64 __PHYSFS_platformGetThreadID(void)
{
return((PHYSFS_uint64) GetCurrentThreadId());
} /* __PHYSFS_platformGetThreadID */
/* ...make this Cygwin AND Visual C friendly... */
int __PHYSFS_platformStricmp(const char *x, const char *y)
{
#if (defined _MSC_VER)
return(stricmp(x, y));
#else
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);
#endif
} /* __PHYSFS_platformStricmp */
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 */
int __PHYSFS_platformExists(const char *fname)
{
BAIL_IF_MACRO
(
GetFileAttributes(fname) == PHYSFS_INVALID_FILE_ATTRIBUTES,
win32strerror(), 0
);
return(1);
} /* __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);
char *p;
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, *p = NULL;
HANDLE dir;
WIN32_FIND_DATA ent;
char *SearchPath;
size_t len = strlen(dirname);
/* Allocate a new string for path, maybe '\\', "*", and NULL terminator */
SearchPath = (char *) alloca(len + 3);
BAIL_IF_MACRO(SearchPath == NULL, ERR_OUT_OF_MEMORY, NULL);
/* Copy current dirname */
strcpy(SearchPath, dirname);
/* if there's no '\\' at the end of the path, stick one in there. */
if (SearchPath[len - 1] != '\\')
{
SearchPath[len++] = '\\';
SearchPath[len] = '\0';
} /* if */
/* Append the "*" to the end of the string */
strcat(SearchPath, "*");
dir = FindFirstFile(SearchPath, &ent);
BAIL_IF_MACRO
(
dir == INVALID_HANDLE_VALUE,
win32strerror(), NULL
);
do
{
if (strcmp(ent.cFileName, ".") == 0)
continue;
if (strcmp(ent.cFileName, "..") == 0)
continue;
retval = __PHYSFS_addToLinkedStringList(retval, &p, ent.cFileName, -1);
} while (FindNextFile(dir, &ent) != 0);
FindClose(dir);
return(retval);
} /* __PHYSFS_platformEnumerateFiles */
char *__PHYSFS_platformCurrentDir(void)
{
LPTSTR retval;
DWORD buflen = 0;
buflen = GetCurrentDirectory(buflen, NULL);
retval = (LPTSTR) malloc(sizeof (TCHAR) * (buflen + 2));
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
GetCurrentDirectory(buflen, retval);
if (retval[buflen - 2] != '\\')
strcat(retval, "\\");
return((char *) retval);
} /* __PHYSFS_platformCurrentDir */
/* this could probably use a cleanup. */
char *__PHYSFS_platformRealPath(const char *path)
{
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);
} /* __PHYSFS_platformRealPath */
int __PHYSFS_platformMkDir(const char *path)
{
DWORD rc = CreateDirectory(path, NULL);
BAIL_IF_MACRO(rc == 0, win32strerror(), 0);
return(1);
} /* __PHYSFS_platformMkDir */
/*
* Get OS info and save the important parts.
*
* Returns non-zero if successful, otherwise it returns zero on failure.
*/
static int getOSInfo(void)
{
#if 0 /* we don't actually use this at the moment, but may in the future. */
OSVERSIONINFO OSVersionInfo; /* Information about the OS */
OSVersionInfo.dwOSVersionInfoSize = sizeof(OSVersionInfo);
BAIL_IF_MACRO(!GetVersionEx(&OSVersionInfo), win32strerror(), 0);
/* Set to TRUE if we are runnign a WinNT based OS 4.0 or greater */
runningNT = ((OSVersionInfo.dwPlatformId == VER_PLATFORM_WIN32_NT) &&
(OSVersionInfo.dwMajorVersion >= 4));
#endif
return(1);
} /* getOSInfo */
/*
* 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)
{
/* If this get unwieldy, make it table driven. */
int allNeededLibrariesLoaded = 1; /* flip to zero as needed. */
libKernel32 = LoadLibrary("kernel32.dll");
if (libKernel32)
{
pGetFileAttributesEx = (LPFNGETFILEATTRIBUTESEX)
GetProcAddress(libKernel32, "GetFileAttributesExA");
} /* if */
/* add other DLLs here... */
/* see if there's any reason to keep kernel32.dll around... */
if (libKernel32)
{
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 */
int __PHYSFS_platformDeinit(void)
{
if (userDir != NULL)
{
free(userDir);
userDir = NULL;
} /* if */
if (libKernel32)
{
FreeLibrary(libKernel32);
libKernel32 = NULL;
} /* if */
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)
{
CloseHandle(fileHandle);
BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
} /* if */
retval->readonly = rdonly;
retval->handle = fileHandle;
return(retval);
} /* doOpen */
void *__PHYSFS_platformOpenRead(const char *filename)
{
return(doOpen(filename, GENERIC_READ, OPEN_EXISTING, 1));
} /* __PHYSFS_platformOpenRead */
void *__PHYSFS_platformOpenWrite(const char *filename)
{
return(doOpen(filename, GENERIC_WRITE, CREATE_ALWAYS, 0));
} /* __PHYSFS_platformOpenWrite */
void *__PHYSFS_platformOpenAppend(const char *filename)
{
void *retval = doOpen(filename, GENERIC_WRITE, OPEN_ALWAYS, 0);
if (retval != NULL)
{
HANDLE h = ((win32file *) retval)->handle;
DWORD rc = SetFilePointer(h, 0, NULL, FILE_END);
if (rc == PHYSFS_INVALID_SET_FILE_POINTER)
{
const char *err = win32strerror();
CloseHandle(h);
free(retval);
BAIL_MACRO(err, NULL);
} /* if */
} /* if */
return(retval);
} /* __PHYSFS_platformOpenAppend */
PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buffer,
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
HANDLE FileHandle = ((win32file *) opaque)->handle;
DWORD CountOfBytesRead;
PHYSFS_sint64 retval;
/* Read data from the file */
/* !!! FIXME: uint32 might be a greater # than DWORD */
if(!ReadFile(FileHandle, buffer, count * size, &CountOfBytesRead, NULL))
{
BAIL_MACRO(win32strerror(), -1);
} /* if */
else
{
/* Return the number of "objects" read. */
/* !!! FIXME: What if not the right amount of bytes was read to make an object? */
retval = CountOfBytesRead / size;
} /* else */
return(retval);
} /* __PHYSFS_platformRead */
PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buffer,
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
HANDLE FileHandle = ((win32file *) opaque)->handle;
DWORD CountOfBytesWritten;
PHYSFS_sint64 retval;
/* Read data from the file */
/* !!! FIXME: uint32 might be a greater # than DWORD */
if(!WriteFile(FileHandle, buffer, count * size, &CountOfBytesWritten, NULL))
{
BAIL_MACRO(win32strerror(), -1);
} /* if */
else
{
/* Return the number of "objects" read. */
/* !!! FIXME: What if not the right number of bytes was written? */
retval = CountOfBytesWritten / size;
} /* else */
return(retval);
} /* __PHYSFS_platformWrite */
int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)
{
HANDLE FileHandle = ((win32file *) opaque)->handle;
DWORD HighOrderPos;
DWORD *pHighOrderPos;
DWORD rc;
/* Get the high order 32-bits of the position */
HighOrderPos = HIGHORDER_UINT64(pos);
/*
* 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."
*/
/* Move pointer "pos" count from start of file */
rc = SetFilePointer(FileHandle, LOWORDER_UINT64(pos),
pHighOrderPos, FILE_BEGIN);
if ( (rc == PHYSFS_INVALID_SET_FILE_POINTER) &&
(GetLastError() != NO_ERROR) )
{
BAIL_MACRO(win32strerror(), 0);
} /* if */
return(1); /* No error occured */
} /* __PHYSFS_platformSeek */
PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)
{
HANDLE FileHandle = ((win32file *) opaque)->handle;
DWORD HighPos = 0;
DWORD LowPos;
PHYSFS_sint64 retval;
/* Get current position */
LowPos = SetFilePointer(FileHandle, 0, &HighPos, FILE_CURRENT);
if ( (LowPos == PHYSFS_INVALID_SET_FILE_POINTER) &&
(GetLastError() != NO_ERROR) )
{
BAIL_MACRO(win32strerror(), 0);
} /* if */
else
{
/* Combine the high/low order to create the 64-bit position value */
retval = (((PHYSFS_uint64) HighPos) << 32) | LowPos;
assert(retval >= 0);
} /* else */
return(retval);
} /* __PHYSFS_platformTell */
PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)
{
HANDLE FileHandle = ((win32file *) opaque)->handle;
DWORD SizeHigh;
DWORD SizeLow;
PHYSFS_sint64 retval;
SizeLow = GetFileSize(FileHandle, &SizeHigh);
if ( (SizeLow == PHYSFS_INVALID_SET_FILE_POINTER) &&
(GetLastError() != NO_ERROR) )
{
BAIL_MACRO(win32strerror(), -1);
} /* if */
else
{
/* Combine the high/low order to create the 64-bit position value */
retval = (((PHYSFS_uint64) SizeHigh) << 32) | SizeLow;
assert(retval >= 0);
} /* else */
return(retval);
} /* __PHYSFS_platformFileLength */
int __PHYSFS_platformEOF(void *opaque)
{
PHYSFS_sint64 FilePosition;
int retval = 0;
/* Get the current position in the file */
if ((FilePosition = __PHYSFS_platformTell(opaque)) != 0)
{
/* Non-zero if EOF is equal to the file length */
retval = FilePosition == __PHYSFS_platformFileLength(opaque);
} /* if */
return(retval);
} /* __PHYSFS_platformEOF */
int __PHYSFS_platformFlush(void *opaque)
{
win32file *fh = ((win32file *) opaque);
if (!fh->readonly)
BAIL_IF_MACRO(!FlushFileBuffers(fh->handle), win32strerror(), 0);
return(1);
} /* __PHYSFS_platformFlush */
int __PHYSFS_platformClose(void *opaque)
{
HANDLE FileHandle = ((win32file *) opaque)->handle;
BAIL_IF_MACRO(!CloseHandle(FileHandle), win32strerror(), 0);
free(opaque);
return(1);
} /* __PHYSFS_platformClose */
int __PHYSFS_platformDelete(const char *path)
{
/* If filename is a folder */
if (GetFileAttributes(path) == FILE_ATTRIBUTE_DIRECTORY)
{
BAIL_IF_MACRO(!RemoveDirectory(path), win32strerror(), 0);
} /* if */
else
{
BAIL_IF_MACRO(!DeleteFile(path), win32strerror(), 0);
} /* else */
return(1); /* if you got here, it worked. */
} /* __PHYSFS_platformDelete */
void *__PHYSFS_platformCreateMutex(void)
{
return((void *) CreateMutex(NULL, FALSE, NULL));
} /* __PHYSFS_platformCreateMutex */
void __PHYSFS_platformDestroyMutex(void *mutex)
{
CloseHandle((HANDLE) mutex);
} /* __PHYSFS_platformDestroyMutex */
int __PHYSFS_platformGrabMutex(void *mutex)