/
windows.c
1408 lines (1163 loc) · 41.8 KB
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/*
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* Windows support routines for PhysicsFS.
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*
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* Please see the file LICENSE.txt in the source's root directory.
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*
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* This file written by Ryan C. Gordon, and made sane by Gregory S. Read.
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*/
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#define __PHYSICSFS_INTERNAL__
#include "physfs_platforms.h"
#ifdef PHYSFS_PLATFORM_WINDOWS
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/* Forcibly disable UNICODE, since we manage this ourselves. */
#ifdef UNICODE
#undef UNICODE
#endif
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#include <windows.h>
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
#include <errno.h>
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#include <ctype.h>
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#include <time.h>
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#include "physfs_internal.h"
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#define LOWORDER_UINT64(pos) ((PHYSFS_uint32) (pos & 0xFFFFFFFF))
#define HIGHORDER_UINT64(pos) ((PHYSFS_uint32) ((pos >> 32) & 0xFFFFFFFF))
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/*
* 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
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/* just in case... */
#define PHYSFS_INVALID_FILE_ATTRIBUTES 0xFFFFFFFF
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/* Not defined before the Vista SDK. */
#define PHYSFS_IO_REPARSE_TAG_SYMLINK 0xA000000C
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#define UTF8_TO_UNICODE_STACK_MACRO(w_assignto, str) { \
if (str == NULL) \
w_assignto = NULL; \
else { \
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const PHYSFS_uint64 len = (PHYSFS_uint64) ((strlen(str) + 1) * 2); \
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w_assignto = (WCHAR *) __PHYSFS_smallAlloc(len); \
if (w_assignto != NULL) \
PHYSFS_utf8ToUcs2(str, (PHYSFS_uint16 *) w_assignto, len); \
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} \
} \
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static PHYSFS_uint64 wStrLen(const WCHAR *wstr)
{
PHYSFS_uint64 len = 0;
while (*(wstr++))
len++;
return(len);
} /* wStrLen */
static char *unicodeToUtf8Heap(const WCHAR *w_str)
{
char *retval = NULL;
if (w_str != NULL)
{
void *ptr = NULL;
const PHYSFS_uint64 len = (wStrLen(w_str) * 4) + 1;
retval = allocator.Malloc(len);
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
PHYSFS_utf8FromUcs2((const PHYSFS_uint16 *) w_str, retval, len);
ptr = allocator.Realloc(retval, strlen(retval) + 1); /* shrink. */
if (ptr != NULL)
retval = (char *) ptr;
} /* if */
return(retval);
} /* unicodeToUtf8Heap */
static char *codepageToUtf8Heap(const char *cpstr)
{
char *retval = NULL;
if (cpstr != NULL)
{
const int len = (int) (strlen(cpstr) + 1);
WCHAR *wbuf = (WCHAR *) __PHYSFS_smallAlloc(len * sizeof (WCHAR));
BAIL_IF_MACRO(wbuf == NULL, ERR_OUT_OF_MEMORY, NULL);
MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, cpstr, len, wbuf, len);
retval = (char *) allocator.Malloc(len * 4);
if (retval == NULL)
__PHYSFS_setError(ERR_OUT_OF_MEMORY);
else
PHYSFS_utf8FromUcs2(wbuf, retval, len * 4);
__PHYSFS_smallFree(wbuf);
} /* if */
return(retval);
} /* codepageToUtf8Heap */
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typedef struct
{
HANDLE handle;
int readonly;
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} WinApiFile;
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static char *userDir = NULL;
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static int osHasUnicode = 0;
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/* pointers for APIs that may not exist on some Windows versions... */
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static HANDLE libKernel32 = NULL;
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static HANDLE libUserEnv = NULL;
static HANDLE libAdvApi32 = NULL;
static DWORD (WINAPI *pGetModuleFileNameW)(HMODULE, LPWCH, DWORD);
static BOOL (WINAPI *pGetUserProfileDirectoryW)(HANDLE, LPWSTR, LPDWORD);
static BOOL (WINAPI *pGetUserNameW)(LPWSTR, LPDWORD);
static DWORD (WINAPI *pGetFileAttributesW)(LPCWSTR);
static HANDLE (WINAPI *pFindFirstFileW)(LPCWSTR, LPWIN32_FIND_DATAW);
static BOOL (WINAPI *pFindNextFileW)(HANDLE, LPWIN32_FIND_DATAW);
static DWORD (WINAPI *pGetCurrentDirectoryW)(DWORD, LPWSTR);
static BOOL (WINAPI *pDeleteFileW)(LPCWSTR);
static BOOL (WINAPI *pRemoveDirectoryW)(LPCWSTR);
static BOOL (WINAPI *pCreateDirectoryW)(LPCWSTR, LPSECURITY_ATTRIBUTES);
static BOOL (WINAPI *pGetFileAttributesExA)
(LPCSTR, GET_FILEEX_INFO_LEVELS, LPVOID);
static BOOL (WINAPI *pGetFileAttributesExW)
(LPCWSTR, GET_FILEEX_INFO_LEVELS, LPVOID);
static DWORD (WINAPI *pFormatMessageW)
(DWORD, LPCVOID, DWORD, DWORD, LPWSTR, DWORD, va_list *);
static HANDLE (WINAPI *pCreateFileW)
(LPCWSTR, DWORD, DWORD, LPSECURITY_ATTRIBUTES, DWORD, DWORD, HANDLE);
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/*
* Fallbacks for missing Unicode functions on Win95/98/ME. These are filled
* into the function pointers if looking up the real Unicode entry points
* in the system DLLs fails, so they're never used on WinNT/XP/Vista/etc.
* They make an earnest effort to convert to/from UTF-8 and UCS-2 to
* the user's current codepage.
*/
static BOOL WINAPI fallbackGetUserNameW(LPWSTR buf, LPDWORD len)
{
const DWORD cplen = *len;
char *cpstr = __PHYSFS_smallAlloc(cplen);
BOOL retval = GetUserNameA(cpstr, len);
if (buf != NULL)
MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, cpstr, cplen, buf, *len);
__PHYSFS_smallFree(cpstr);
return(retval);
} /* fallbackGetUserNameW */
static DWORD WINAPI fallbackFormatMessageW(DWORD dwFlags, LPCVOID lpSource,
DWORD dwMessageId, DWORD dwLangId,
LPWSTR lpBuf, DWORD nSize,
va_list *Arguments)
{
char *cpbuf = (char *) __PHYSFS_smallAlloc(nSize);
DWORD retval = FormatMessageA(dwFlags, lpSource, dwMessageId, dwLangId,
cpbuf, nSize, Arguments);
if (retval > 0)
MultiByteToWideChar(CP_ACP,MB_PRECOMPOSED,cpbuf,retval,lpBuf,nSize);
__PHYSFS_smallFree(cpbuf);
return(retval);
} /* fallbackFormatMessageW */
static DWORD WINAPI fallbackGetModuleFileNameW(HMODULE hMod, LPWCH lpBuf,
DWORD nSize)
{
char *cpbuf = (char *) __PHYSFS_smallAlloc(nSize);
DWORD retval = GetModuleFileNameA(hMod, cpbuf, nSize);
if (retval > 0)
MultiByteToWideChar(CP_ACP,MB_PRECOMPOSED,cpbuf,retval,lpBuf,nSize);
__PHYSFS_smallFree(cpbuf);
return(retval);
} /* fallbackGetModuleFileNameW */
static DWORD WINAPI fallbackGetFileAttributesW(LPCWSTR fname)
{
DWORD retval = 0;
const int buflen = (int) (wStrLen(fname) + 1);
char *cpstr = (char *) __PHYSFS_smallAlloc(buflen);
WideCharToMultiByte(CP_ACP, 0, fname, buflen, cpstr, buflen, NULL, NULL);
retval = GetFileAttributesA(cpstr);
__PHYSFS_smallFree(cpstr);
return(retval);
} /* fallbackGetFileAttributesW */
static DWORD WINAPI fallbackGetCurrentDirectoryW(DWORD buflen, LPWSTR buf)
{
DWORD retval = 0;
char *cpbuf = NULL;
if (buf != NULL)
cpbuf = (char *) __PHYSFS_smallAlloc(buflen);
retval = GetCurrentDirectoryA(buflen, cpbuf);
if (cpbuf != NULL)
{
MultiByteToWideChar(CP_ACP,MB_PRECOMPOSED,cpbuf,retval,buf,buflen);
__PHYSFS_smallFree(cpbuf);
} /* if */
return(retval);
} /* fallbackGetCurrentDirectoryW */
static BOOL WINAPI fallbackRemoveDirectoryW(LPCWSTR dname)
{
BOOL retval = 0;
const int buflen = (int) (wStrLen(dname) + 1);
char *cpstr = (char *) __PHYSFS_smallAlloc(buflen);
WideCharToMultiByte(CP_ACP, 0, dname, buflen, cpstr, buflen, NULL, NULL);
retval = RemoveDirectoryA(cpstr);
__PHYSFS_smallFree(cpstr);
return(retval);
} /* fallbackRemoveDirectoryW */
static BOOL WINAPI fallbackCreateDirectoryW(LPCWSTR dname,
LPSECURITY_ATTRIBUTES attr)
{
BOOL retval = 0;
const int buflen = (int) (wStrLen(dname) + 1);
char *cpstr = (char *) __PHYSFS_smallAlloc(buflen);
WideCharToMultiByte(CP_ACP, 0, dname, buflen, cpstr, buflen, NULL, NULL);
retval = CreateDirectoryA(cpstr, attr);
__PHYSFS_smallFree(cpstr);
return(retval);
} /* fallbackCreateDirectoryW */
static BOOL WINAPI fallbackDeleteFileW(LPCWSTR fname)
{
BOOL retval = 0;
const int buflen = (int) (wStrLen(fname) + 1);
char *cpstr = (char *) __PHYSFS_smallAlloc(buflen);
WideCharToMultiByte(CP_ACP, 0, fname, buflen, cpstr, buflen, NULL, NULL);
retval = DeleteFileA(cpstr);
__PHYSFS_smallFree(cpstr);
return(retval);
} /* fallbackDeleteFileW */
static HANDLE WINAPI fallbackCreateFileW(LPCWSTR fname,
DWORD dwDesiredAccess, DWORD dwShareMode,
LPSECURITY_ATTRIBUTES lpSecurityAttrs,
DWORD dwCreationDisposition,
DWORD dwFlagsAndAttrs, HANDLE hTemplFile)
{
HANDLE retval;
const int buflen = (int) (wStrLen(fname) + 1);
char *cpstr = (char *) __PHYSFS_smallAlloc(buflen);
WideCharToMultiByte(CP_ACP, 0, fname, buflen, cpstr, buflen, NULL, NULL);
retval = CreateFileA(cpstr, dwDesiredAccess, dwShareMode, lpSecurityAttrs,
dwCreationDisposition, dwFlagsAndAttrs, hTemplFile);
__PHYSFS_smallFree(cpstr);
return(retval);
} /* fallbackCreateFileW */
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#if (PHYSFS_MINIMUM_GCC_VERSION(3,3))
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typedef FARPROC __attribute__((__may_alias__)) PHYSFS_FARPROC;
#else
typedef FARPROC PHYSFS_FARPROC;
#endif
static void symLookup(HMODULE dll, PHYSFS_FARPROC *addr, const char *sym,
int reallyLook, PHYSFS_FARPROC fallback)
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{
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PHYSFS_FARPROC proc;
proc = (PHYSFS_FARPROC) ((reallyLook) ? GetProcAddress(dll, sym) : NULL);
if (proc == NULL)
proc = fallback; /* may also be NULL. */
*addr = proc;
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} /* symLookup */
static int findApiSymbols(void)
{
HMODULE dll = NULL;
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#define LOOKUP_NOFALLBACK(x, reallyLook) \
symLookup(dll, (PHYSFS_FARPROC *) &p##x, #x, reallyLook, NULL)
#define LOOKUP(x, reallyLook) \
symLookup(dll, (PHYSFS_FARPROC *) &p##x, #x, \
reallyLook, (PHYSFS_FARPROC) fallback##x)
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/* Apparently Win9x HAS the Unicode entry points, they just don't WORK. */
/* ...so don't look them up unless we're on NT+. (see osHasUnicode.) */
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dll = libUserEnv = LoadLibraryA("userenv.dll");
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if (dll != NULL)
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LOOKUP_NOFALLBACK(GetUserProfileDirectoryW, osHasUnicode);
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/* !!! FIXME: what do they call advapi32.dll on Win64? */
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dll = libAdvApi32 = LoadLibraryA("advapi32.dll");
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if (dll != NULL)
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LOOKUP(GetUserNameW, osHasUnicode);
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/* !!! FIXME: what do they call kernel32.dll on Win64? */
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dll = libKernel32 = LoadLibraryA("kernel32.dll");
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if (dll != NULL)
{
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LOOKUP_NOFALLBACK(GetFileAttributesExA, 1);
LOOKUP_NOFALLBACK(GetFileAttributesExW, osHasUnicode);
LOOKUP_NOFALLBACK(FindFirstFileW, osHasUnicode);
LOOKUP_NOFALLBACK(FindNextFileW, osHasUnicode);
LOOKUP(GetModuleFileNameW, osHasUnicode);
LOOKUP(FormatMessageW, osHasUnicode);
LOOKUP(GetFileAttributesW, osHasUnicode);
LOOKUP(GetCurrentDirectoryW, osHasUnicode);
LOOKUP(CreateDirectoryW, osHasUnicode);
LOOKUP(RemoveDirectoryW, osHasUnicode);
LOOKUP(CreateFileW, osHasUnicode);
LOOKUP(DeleteFileW, osHasUnicode);
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} /* if */
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#undef LOOKUP_NOFALLBACK
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#undef LOOKUP
return(1);
} /* findApiSymbols */
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const char *__PHYSFS_platformDirSeparator = "\\";
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/*
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* Figure out what the last failing Windows API call was, and
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* 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.
*/
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static const char *winApiStrError(void)
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{
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static char utf8buf[255];
WCHAR msgbuf[255];
WCHAR *ptr;
DWORD rc = pFormatMessageW(
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
msgbuf, __PHYSFS_ARRAYLEN(msgbuf),
NULL);
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if (rc == 0)
msgbuf[0] = '\0'; /* oh well. */
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/* chop off newlines. */
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for (ptr = msgbuf; *ptr; ptr++)
{
if ((*ptr == '\n') || (*ptr == '\r'))
{
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*ptr = '\0';
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break;
} /* if */
} /* for */
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/* may truncate, but oh well. */
PHYSFS_utf8FromUcs2((PHYSFS_uint16 *) msgbuf, utf8buf, sizeof (utf8buf));
return((const char *) utf8buf);
} /* winApiStrError */
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static char *getExePath(void)
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{
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DWORD buflen = 64;
LPWSTR modpath = NULL;
char *retval = NULL;
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while (1)
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{
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DWORD rc;
void *ptr;
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if ( !(ptr = allocator.Realloc(modpath, buflen*sizeof(WCHAR))) )
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{
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allocator.Free(modpath);
BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
} /* if */
modpath = (LPWSTR) ptr;
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rc = pGetModuleFileNameW(NULL, modpath, buflen);
if (rc == 0)
{
allocator.Free(modpath);
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BAIL_MACRO(winApiStrError(), NULL);
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} /* if */
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if (rc < buflen)
{
buflen = rc;
break;
} /* if */
buflen *= 2;
} /* while */
if (buflen > 0) /* just in case... */
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{
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WCHAR *ptr = (modpath + buflen) - 1;
while (ptr != modpath)
{
if (*ptr == '\\')
break;
ptr--;
} /* while */
if ((ptr == modpath) && (*ptr != '\\'))
__PHYSFS_setError(ERR_GETMODFN_NO_DIR);
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else
{
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*(ptr + 1) = '\0'; /* chop off filename. */
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retval = unicodeToUtf8Heap(modpath);
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} /* else */
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} /* else */
allocator.Free(modpath);
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return(retval); /* w00t. */
} /* getExePath */
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/*
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* Try to make use of GetUserProfileDirectoryW(), which isn't available on
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* 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.
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*
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* 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.
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*/
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static int determineUserDir(void)
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{
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if (userDir != NULL)
return(1); /* already good to go. */
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/*
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* GetUserProfileDirectoryW() is only available on NT 4.0 and later.
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* 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
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* function pointer. Since this is originally an NT API, we don't
* offer a non-Unicode fallback.
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*/
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if (pGetUserProfileDirectoryW != NULL)
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{
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HANDLE accessToken = NULL; /* Security handle to process */
HANDLE processHandle = GetCurrentProcess();
if (OpenProcessToken(processHandle, TOKEN_QUERY, &accessToken))
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{
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DWORD psize = 0;
WCHAR dummy = 0;
LPWSTR wstr = NULL;
BOOL rc = 0;
/*
* 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 = pGetUserProfileDirectoryW(accessToken, &dummy, &psize);
assert(!rc); /* !!! FIXME: handle this gracefully. */
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(void)rc;
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/* Allocate memory for the profile directory */
wstr = (LPWSTR) __PHYSFS_smallAlloc(psize * sizeof (WCHAR));
if (wstr != NULL)
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{
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if (pGetUserProfileDirectoryW(accessToken, wstr, &psize))
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userDir = unicodeToUtf8Heap(wstr);
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__PHYSFS_smallFree(wstr);
} /* else */
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} /* if */
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CloseHandle(accessToken);
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} /* if */
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if (userDir == NULL) /* couldn't get profile for some reason. */
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{
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/* Might just be a non-NT system; resort to the basedir. */
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userDir = getExePath();
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BAIL_IF_MACRO(userDir == NULL, NULL, 0); /* STILL failed?! */
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} /* if */
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return(1); /* We made it: hit the showers. */
} /* determineUserDir */
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static BOOL mediaInDrive(const char *drive)
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{
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UINT oldErrorMode;
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DWORD tmp;
BOOL retval;
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/* Prevent windows warning message appearing when checking media size */
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oldErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
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/* If this function succeeds, there's media in the drive */
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retval = GetVolumeInformationA(drive, NULL, 0, NULL, NULL, &tmp, NULL, 0);
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/* Revert back to old windows error handler */
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SetErrorMode(oldErrorMode);
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return(retval);
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} /* mediaInDrive */
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void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)
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{
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/* !!! FIXME: Can CD drives be non-drive letter paths? */
/* !!! FIXME: (so can they be Unicode paths?) */
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char drive_str[4] = "x:\\";
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char ch;
for (ch = 'A'; ch <= 'Z'; ch++)
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{
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drive_str[0] = ch;
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if (GetDriveType(drive_str) == DRIVE_CDROM && mediaInDrive(drive_str))
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cb(data, drive_str);
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} /* for */
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} /* __PHYSFS_platformDetectAvailableCDs */
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char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
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if ((argv0 != NULL) && (strchr(argv0, '\\') != NULL))
return(NULL); /* default behaviour can handle this. */
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return(getExePath());
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} /* __PHYSFS_platformCalcBaseDir */
char *__PHYSFS_platformGetUserName(void)
{
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DWORD bufsize = 0;
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char *retval = NULL;
if (pGetUserNameW(NULL, &bufsize) == 0) /* This SHOULD fail. */
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{
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LPWSTR wbuf = (LPWSTR) __PHYSFS_smallAlloc(bufsize * sizeof (WCHAR));
BAIL_IF_MACRO(wbuf == NULL, ERR_OUT_OF_MEMORY, NULL);
if (pGetUserNameW(wbuf, &bufsize) == 0) /* ?! */
__PHYSFS_setError(winApiStrError());
else
retval = unicodeToUtf8Heap(wbuf);
__PHYSFS_smallFree(wbuf);
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} /* if */
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return(retval);
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} /* __PHYSFS_platformGetUserName */
char *__PHYSFS_platformGetUserDir(void)
{
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char *retval = (char *) allocator.Malloc(strlen(userDir) + 1);
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BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
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strcpy(retval, userDir); /* calculated at init time. */
return(retval);
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} /* __PHYSFS_platformGetUserDir */
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void *__PHYSFS_platformGetThreadID(void)
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{
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return( (void *) ((size_t) GetCurrentThreadId()) );
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} /* __PHYSFS_platformGetThreadID */
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static int doPlatformExists(LPWSTR wpath)
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{
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BAIL_IF_MACRO
(
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pGetFileAttributesW(wpath) == PHYSFS_INVALID_FILE_ATTRIBUTES,
winApiStrError(), 0
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);
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return(1);
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} /* doPlatformExists */
int __PHYSFS_platformExists(const char *fname)
{
int retval = 0;
LPWSTR wpath;
UTF8_TO_UNICODE_STACK_MACRO(wpath, fname);
BAIL_IF_MACRO(wpath == NULL, ERR_OUT_OF_MEMORY, 0);
retval = doPlatformExists(wpath);
__PHYSFS_smallFree(wpath);
return(retval);
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} /* __PHYSFS_platformExists */
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static int isSymlinkAttrs(const DWORD attr, const DWORD tag)
593
{
594
595
return ( (attr & FILE_ATTRIBUTE_REPARSE_POINT) &&
(tag == PHYSFS_IO_REPARSE_TAG_SYMLINK) );
596
597
598
} /* isSymlinkAttrs */
599
600
int __PHYSFS_platformIsSymLink(const char *fname)
{
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
/* !!! FIXME:
* Windows Vista can have NTFS symlinks. Can older Windows releases have
* them when talking to a network file server? What happens when you
* mount a NTFS partition on XP that was plugged into a Vista install
* that made a symlink?
*/
int retval = 0;
LPWSTR wpath;
HANDLE dir;
WIN32_FIND_DATAW entw;
/* no unicode entry points? Probably no symlinks. */
BAIL_IF_MACRO(pFindFirstFileW == NULL, NULL, 0);
UTF8_TO_UNICODE_STACK_MACRO(wpath, fname);
BAIL_IF_MACRO(wpath == NULL, ERR_OUT_OF_MEMORY, 0);
/* !!! FIXME: filter wildcard chars? */
dir = pFindFirstFileW(wpath, &entw);
if (dir != INVALID_HANDLE_VALUE)
{
retval = isSymlinkAttrs(entw.dwFileAttributes, entw.dwReserved0);
FindClose(dir);
} /* if */
__PHYSFS_smallFree(wpath);
return(retval);
629
630
631
632
633
} /* __PHYSFS_platformIsSymlink */
int __PHYSFS_platformIsDirectory(const char *fname)
{
634
635
636
637
638
639
640
int retval = 0;
LPWSTR wpath;
UTF8_TO_UNICODE_STACK_MACRO(wpath, fname);
BAIL_IF_MACRO(wpath == NULL, ERR_OUT_OF_MEMORY, 0);
retval = ((pGetFileAttributesW(wpath) & FILE_ATTRIBUTE_DIRECTORY) != 0);
__PHYSFS_smallFree(wpath);
return(retval);
641
642
643
644
645
646
647
648
649
650
} /* __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;
651
char *retval = (char *) allocator.Malloc(len);
652
char *p;
653
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655
656
657
658
659
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661
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663
664
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667
668
669
670
671
672
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 */
673
674
void __PHYSFS_platformEnumerateFiles(const char *dirname,
int omitSymLinks,
675
676
PHYSFS_EnumFilesCallback callback,
const char *origdir,
677
void *callbackdata)
678
{
679
680
const int unicode = (pFindFirstFileW != NULL) && (pFindNextFileW != NULL);
HANDLE dir = INVALID_HANDLE_VALUE;
681
WIN32_FIND_DATA ent;
682
WIN32_FIND_DATAW entw;
683
size_t len = strlen(dirname);
684
685
686
char *searchPath = NULL;
WCHAR *wSearchPath = NULL;
char *utf8 = NULL;
687
688
/* Allocate a new string for path, maybe '\\', "*", and NULL terminator */
689
690
searchPath = (char *) __PHYSFS_smallAlloc(len + 3);
if (searchPath == NULL)
691
return;
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693
/* Copy current dirname */
694
strcpy(searchPath, dirname);
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696
/* if there's no '\\' at the end of the path, stick one in there. */
697
if (searchPath[len - 1] != '\\')
698
{
699
700
searchPath[len++] = '\\';
searchPath[len] = '\0';
701
702
} /* if */
703
/* Append the "*" to the end of the string */
704
strcat(searchPath, "*");
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707
708
UTF8_TO_UNICODE_STACK_MACRO(wSearchPath, searchPath);
if (wSearchPath == NULL)
return; /* oh well. */
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711
712
if (unicode)
dir = pFindFirstFileW(wSearchPath, &entw);
else
713
{
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717
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719
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721
722
const int len = (int) (wStrLen(wSearchPath) + 1);
char *cp = (char *) __PHYSFS_smallAlloc(len);
if (cp != NULL)
{
WideCharToMultiByte(CP_ACP, 0, wSearchPath, len, cp, len, 0, 0);
dir = FindFirstFileA(cp, &ent);
__PHYSFS_smallFree(cp);
} /* if */
} /* else */
723
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727
__PHYSFS_smallFree(wSearchPath);
__PHYSFS_smallFree(searchPath);
if (dir == INVALID_HANDLE_VALUE)
return;
728
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730
731
732
if (unicode)
{
do
{
733
const DWORD attr = entw.dwFileAttributes;
734
const DWORD tag = entw.dwReserved0;
735
736
737
738
739
const WCHAR *fn = entw.cFileName;
if ((fn[0] == '.') && (fn[1] == '\0'))
continue;
if ((fn[0] == '.') && (fn[1] == '.') && (fn[2] == '\0'))
continue;
740
741
if ((omitSymLinks) && (isSymlinkAttrs(attr, tag)))
continue;
742
743
utf8 = unicodeToUtf8Heap(fn);
744
745
746
747
748
749
750
if (utf8 != NULL)
{
callback(callbackdata, origdir, utf8);
allocator.Free(utf8);
} /* if */
} while (pFindNextFileW(dir, &entw) != 0);
} /* if */
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752
753
754
755
else /* ANSI fallback. */
{
do
{
756
const DWORD attr = ent.dwFileAttributes;
757
const DWORD tag = ent.dwReserved0;
758
759
760
761
762
const char *fn = ent.cFileName;
if ((fn[0] == '.') && (fn[1] == '\0'))
continue;
if ((fn[0] == '.') && (fn[1] == '.') && (fn[2] == '\0'))
continue;
763
764
if ((omitSymLinks) && (isSymlinkAttrs(attr, tag)))
continue;
765
766
utf8 = codepageToUtf8Heap(fn);
767
768
769
770
771
772
773
if (utf8 != NULL)
{
callback(callbackdata, origdir, utf8);
allocator.Free(utf8);
} /* if */
} while (FindNextFileA(dir, &ent) != 0);
} /* else */
774
775
776
777
778
779
780
FindClose(dir);
} /* __PHYSFS_platformEnumerateFiles */
char *__PHYSFS_platformCurrentDir(void)
{
781
782
char *retval = NULL;
WCHAR *wbuf = NULL;
783
784
DWORD buflen = 0;
785
786
787
788
buflen = pGetCurrentDirectoryW(buflen, NULL);
wbuf = (WCHAR *) __PHYSFS_smallAlloc((buflen + 2) * sizeof (WCHAR));
BAIL_IF_MACRO(wbuf == NULL, ERR_OUT_OF_MEMORY, NULL);
pGetCurrentDirectoryW(buflen, wbuf);
789
790
791
792
793
794
795
796
if (wbuf[buflen - 2] == '\\')
wbuf[buflen-1] = '\0'; /* just in case... */
else
{
wbuf[buflen - 1] = '\\';
wbuf[buflen] = '\0';
} /* else */
797
798
799
800
retval = unicodeToUtf8Heap(wbuf);
__PHYSFS_smallFree(wbuf);
return(retval);
801
802
803
} /* __PHYSFS_platformCurrentDir */
804
/* this could probably use a cleanup. */
805
806
char *__PHYSFS_platformRealPath(const char *path)
{
807
808
/* !!! FIXME: this should return NULL if (path) doesn't exist? */
/* !!! FIXME: Need to handle symlinks in Vista... */
809
/* !!! FIXME: try GetFullPathName() instead? */
810
/* this function should be UTF-8 clean. */
811
812
813
814
815
816
char *retval = NULL;
char *p = NULL;
BAIL_IF_MACRO(path == NULL, ERR_INVALID_ARGUMENT, NULL);
BAIL_IF_MACRO(*path == '\0', ERR_INVALID_ARGUMENT, NULL);
817
retval = (char *) allocator.Malloc(MAX_PATH);
818
819
820
821
822
823
824
825
826
827
828
829
830
831
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)
{
832
allocator.Free(retval);
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
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 */
878
allocator.Free(currentDir);
879
880
881
882
883
884
885
} /* else */
/* (whew.) Ok, now take out "." and ".." path entries... */
p = retval;
while ( (p = strstr(p, "\\.")) != NULL)
{
886
/* it's a "." entry that doesn't end the string. */
887
888
889
if (p[2] == '\\')
memmove(p + 1, p + 3, strlen(p + 3) + 1);
890
/* it's a "." entry that ends the string. */
891
892
893
else if (p[2] == '\0')
p[0] = '\0';
894
/* it's a ".." entry. */
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
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 */
920
/* shrink the retval's memory block if possible... */
921
p = (char *) allocator.Realloc(retval, strlen(retval) + 1);
922
923
924
925
if (p != NULL)
retval = p;
return(retval);
926
927
928
929
930
} /* __PHYSFS_platformRealPath */
int __PHYSFS_platformMkDir(const char *path)
{
931
932
933
934
935
936
WCHAR *wpath;
DWORD rc;
UTF8_TO_UNICODE_STACK_MACRO(wpath, path);
rc = pCreateDirectoryW(wpath, NULL);
__PHYSFS_smallFree(wpath);
BAIL_IF_MACRO(rc == 0, winApiStrError(), 0);
937
938
939
return(1);
} /* __PHYSFS_platformMkDir */
940
941
942
943
944
945
/*
* Get OS info and save the important parts.
*
* Returns non-zero if successful, otherwise it returns zero on failure.
*/
946
947
948
949
950
951
952
953
static int getOSInfo(void)
{
OSVERSIONINFO osVerInfo; /* Information about the OS */
osVerInfo.dwOSVersionInfoSize = sizeof(osVerInfo);
BAIL_IF_MACRO(!GetVersionEx(&osVerInfo), winApiStrError(), 0);
osHasUnicode = (osVerInfo.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS);
return(1);
} /* getOSInfo */
954
955
956
957
int __PHYSFS_platformInit(void)
{
958
BAIL_IF_MACRO(!getOSInfo(), NULL, 0);
959
BAIL_IF_MACRO(!findApiSymbols(), NULL, 0);
960
961
962
BAIL_IF_MACRO(!determineUserDir(), NULL, 0);
return(1); /* It's all good */
} /* __PHYSFS_platformInit */
963
964
965
966
int __PHYSFS_platformDeinit(void)
{
967
968
969
970
971
HANDLE *libs[] = { &libKernel32, &libUserEnv, &libAdvApi32, NULL };
int i;
allocator.Free(userDir);
userDir = NULL;
972
973
for (i = 0; libs[i] != NULL; i++)
974
{
975
976
977
978
979
const HANDLE lib = *(libs[i]);
if (lib)
FreeLibrary(lib);
*(libs[i]) = NULL;
} /* for */
980
981
982
983
984
985
986
987
return(1); /* It's all good */
} /* __PHYSFS_platformDeinit */
static void *doOpen(const char *fname, DWORD mode, DWORD creation, int rdonly)
{
HANDLE fileHandle;
988
989
WinApiFile *retval;
WCHAR *wfname;
990
991
992
UTF8_TO_UNICODE_STACK_MACRO(wfname, fname);
BAIL_IF_MACRO(wfname == NULL, ERR_OUT_OF_MEMORY, NULL);
993
994
fileHandle = pCreateFileW(wfname, mode, FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, creation, FILE_ATTRIBUTE_NORMAL, NULL);
995
__PHYSFS_smallFree(wfname);
996
997
998
BAIL_IF_MACRO
(
999
fileHandle == INVALID_HANDLE_VALUE,
1000
winApiStrError(), NULL