/
platform_windows.c
1369 lines (1120 loc) · 40.9 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>
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#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++;
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return len;
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} /* 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 */
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return retval;
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} /* 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 */
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return retval;
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} /* 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);
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return retval;
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} /* 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);
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return retval;
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} /* 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);
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return retval;
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} /* 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);
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return retval;
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} /* 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 */
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return retval;
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} /* 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);
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return retval;
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} /* 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);
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return retval;
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} /* 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);
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return retval;
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} /* 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);
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return retval;
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} /* 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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dll = libAdvApi32 = LoadLibraryA("advapi32.dll");
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if (dll != NULL)
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LOOKUP(GetUserNameW, osHasUnicode);
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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
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return 1;
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} /* 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));
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return ((const char *) utf8buf);
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} /* 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. */
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} /* 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)
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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. */
/* 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. */
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} /* 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))
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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. */
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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 isSymlinkAttrs(const DWORD attr, const DWORD tag)
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{
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return ( (attr & FILE_ATTRIBUTE_REPARSE_POINT) &&
(tag == PHYSFS_IO_REPARSE_TAG_SYMLINK) );
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} /* isSymlinkAttrs */
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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;
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char *retval = (char *) allocator.Malloc(len);
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char *p;
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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 = '\\';
595
return retval;
596
597
598
} /* __PHYSFS_platformCvtToDependent */
599
600
void __PHYSFS_platformEnumerateFiles(const char *dirname,
int omitSymLinks,
601
602
PHYSFS_EnumFilesCallback callback,
const char *origdir,
603
void *callbackdata)
604
{
605
606
const int unicode = (pFindFirstFileW != NULL) && (pFindNextFileW != NULL);
HANDLE dir = INVALID_HANDLE_VALUE;
607
WIN32_FIND_DATA ent;
608
WIN32_FIND_DATAW entw;
609
size_t len = strlen(dirname);
610
611
612
char *searchPath = NULL;
WCHAR *wSearchPath = NULL;
char *utf8 = NULL;
613
614
/* Allocate a new string for path, maybe '\\', "*", and NULL terminator */
615
616
searchPath = (char *) __PHYSFS_smallAlloc(len + 3);
if (searchPath == NULL)
617
return;
618
619
/* Copy current dirname */
620
strcpy(searchPath, dirname);
621
622
/* if there's no '\\' at the end of the path, stick one in there. */
623
if (searchPath[len - 1] != '\\')
624
{
625
626
searchPath[len++] = '\\';
searchPath[len] = '\0';
627
628
} /* if */
629
/* Append the "*" to the end of the string */
630
strcat(searchPath, "*");
631
632
633
634
UTF8_TO_UNICODE_STACK_MACRO(wSearchPath, searchPath);
if (wSearchPath == NULL)
return; /* oh well. */
635
636
637
638
if (unicode)
dir = pFindFirstFileW(wSearchPath, &entw);
else
639
{
640
641
642
643
644
645
646
647
648
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 */
649
650
651
652
653
__PHYSFS_smallFree(wSearchPath);
__PHYSFS_smallFree(searchPath);
if (dir == INVALID_HANDLE_VALUE)
return;
654
655
656
657
658
if (unicode)
{
do
{
659
const DWORD attr = entw.dwFileAttributes;
660
const DWORD tag = entw.dwReserved0;
661
662
663
664
665
const WCHAR *fn = entw.cFileName;
if ((fn[0] == '.') && (fn[1] == '\0'))
continue;
if ((fn[0] == '.') && (fn[1] == '.') && (fn[2] == '\0'))
continue;
666
667
if ((omitSymLinks) && (isSymlinkAttrs(attr, tag)))
continue;
668
669
utf8 = unicodeToUtf8Heap(fn);
670
671
672
673
674
675
676
if (utf8 != NULL)
{
callback(callbackdata, origdir, utf8);
allocator.Free(utf8);
} /* if */
} while (pFindNextFileW(dir, &entw) != 0);
} /* if */
677
678
679
680
681
else /* ANSI fallback. */
{
do
{
682
const DWORD attr = ent.dwFileAttributes;
683
const DWORD tag = ent.dwReserved0;
684
685
686
687
688
const char *fn = ent.cFileName;
if ((fn[0] == '.') && (fn[1] == '\0'))
continue;
if ((fn[0] == '.') && (fn[1] == '.') && (fn[2] == '\0'))
continue;
689
690
if ((omitSymLinks) && (isSymlinkAttrs(attr, tag)))
continue;
691
692
utf8 = codepageToUtf8Heap(fn);
693
694
695
696
697
698
699
if (utf8 != NULL)
{
callback(callbackdata, origdir, utf8);
allocator.Free(utf8);
} /* if */
} while (FindNextFileA(dir, &ent) != 0);
} /* else */
700
701
702
703
704
705
706
FindClose(dir);
} /* __PHYSFS_platformEnumerateFiles */
char *__PHYSFS_platformCurrentDir(void)
{
707
708
char *retval = NULL;
WCHAR *wbuf = NULL;
709
710
DWORD buflen = 0;
711
712
713
714
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);
715
716
717
718
719
720
721
722
if (wbuf[buflen - 2] == '\\')
wbuf[buflen-1] = '\0'; /* just in case... */
else
{
wbuf[buflen - 1] = '\\';
wbuf[buflen] = '\0';
} /* else */
723
724
725
retval = unicodeToUtf8Heap(wbuf);
__PHYSFS_smallFree(wbuf);
726
return retval;
727
728
729
} /* __PHYSFS_platformCurrentDir */
730
/* this could probably use a cleanup. */
731
732
char *__PHYSFS_platformRealPath(const char *path)
{
733
734
/* !!! FIXME: this should return NULL if (path) doesn't exist? */
/* !!! FIXME: Need to handle symlinks in Vista... */
735
/* !!! FIXME: try GetFullPathName() instead? */
736
/* this function should be UTF-8 clean. */
737
738
739
740
741
742
char *retval = NULL;
char *p = NULL;
BAIL_IF_MACRO(path == NULL, ERR_INVALID_ARGUMENT, NULL);
BAIL_IF_MACRO(*path == '\0', ERR_INVALID_ARGUMENT, NULL);
743
retval = (char *) allocator.Malloc(MAX_PATH);
744
745
746
747
748
749
750
751
752
753
754
755
756
757
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)
{
758
allocator.Free(retval);
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
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 */
804
allocator.Free(currentDir);
805
806
807
808
809
810
811
} /* else */
/* (whew.) Ok, now take out "." and ".." path entries... */
p = retval;
while ( (p = strstr(p, "\\.")) != NULL)
{
812
/* it's a "." entry that doesn't end the string. */
813
814
815
if (p[2] == '\\')
memmove(p + 1, p + 3, strlen(p + 3) + 1);
816
/* it's a "." entry that ends the string. */
817
818
819
else if (p[2] == '\0')
p[0] = '\0';
820
/* it's a ".." entry. */
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
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 */
846
/* shrink the retval's memory block if possible... */
847
p = (char *) allocator.Realloc(retval, strlen(retval) + 1);
848
849
850
if (p != NULL)
retval = p;
851
return retval;
852
853
854
855
856
} /* __PHYSFS_platformRealPath */
int __PHYSFS_platformMkDir(const char *path)
{
857
858
859
860
861
862
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);
863
return 1;
864
865
} /* __PHYSFS_platformMkDir */
866
867
868
869
870
871
/*
* Get OS info and save the important parts.
*
* Returns non-zero if successful, otherwise it returns zero on failure.
*/
872
873
874
875
876
877
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);
878
return 1;
879
} /* getOSInfo */
880
881
882
883
int __PHYSFS_platformInit(void)
{
884
BAIL_IF_MACRO(!getOSInfo(), NULL, 0);
885
BAIL_IF_MACRO(!findApiSymbols(), NULL, 0);
886
BAIL_IF_MACRO(!determineUserDir(), NULL, 0);
887
return 1; /* It's all good */
888
} /* __PHYSFS_platformInit */
889
890
891
892
int __PHYSFS_platformDeinit(void)
{
893
894
895
896
897
HANDLE *libs[] = { &libKernel32, &libUserEnv, &libAdvApi32, NULL };
int i;
allocator.Free(userDir);
userDir = NULL;
898
899
for (i = 0; libs[i] != NULL; i++)
900
{
901
902
903
904
905
const HANDLE lib = *(libs[i]);
if (lib)
FreeLibrary(lib);
*(libs[i]) = NULL;
} /* for */
906
907
return 1; /* It's all good */
908
909
910
911
912
913
} /* __PHYSFS_platformDeinit */
static void *doOpen(const char *fname, DWORD mode, DWORD creation, int rdonly)
{
HANDLE fileHandle;
914
915
WinApiFile *retval;
WCHAR *wfname;
916
917
918
UTF8_TO_UNICODE_STACK_MACRO(wfname, fname);
BAIL_IF_MACRO(wfname == NULL, ERR_OUT_OF_MEMORY, NULL);
919
920
fileHandle = pCreateFileW(wfname, mode, FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, creation, FILE_ATTRIBUTE_NORMAL, NULL);
921
__PHYSFS_smallFree(wfname);
922
923
924
BAIL_IF_MACRO
(
925
fileHandle == INVALID_HANDLE_VALUE,
926
winApiStrError(), NULL
927
);
928
929
retval = (WinApiFile *) allocator.Malloc(sizeof (WinApiFile));
930
if (retval == NULL)
931
{
932
933
CloseHandle(fileHandle);
BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
934
} /* if */
935
936
937
retval->readonly = rdonly;
retval->handle = fileHandle;
938
return retval;
939
940
} /* doOpen */
941
942
943
void *__PHYSFS_platformOpenRead(const char *filename)
{
944
return doOpen(filename, GENERIC_READ, OPEN_EXISTING, 1);
945
} /* __PHYSFS_platformOpenRead */
946
947
948
949
void *__PHYSFS_platformOpenWrite(const char *filename)
{
950
return doOpen(filename, GENERIC_WRITE, CREATE_ALWAYS, 0);
951
} /* __PHYSFS_platformOpenWrite */
952
953
954
955
void *__PHYSFS_platformOpenAppend(const char *filename)
{
956
957
958
void *retval = doOpen(filename, GENERIC_WRITE, OPEN_ALWAYS, 0);
if (retval != NULL)
{
959
HANDLE h = ((WinApiFile *) retval)->handle;
960
961
DWORD rc = SetFilePointer(h, 0, NULL, FILE_END);
if (rc == PHYSFS_INVALID_SET_FILE_POINTER)
962
{
963
const char *err = winApiStrError();
964
CloseHandle(h);
965
allocator.Free(retval);
966
967
968
969
BAIL_MACRO(err, NULL);
} /* if */
} /* if */
970
return retval;
971
} /* __PHYSFS_platformOpenAppend */
972
973
974
/* !!! FIXME: this function fails if len > 0xFFFFFFFF. */
975
PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buf, PHYSFS_uint64 len)
976
{
977
HANDLE Handle = ((WinApiFile *) opaque)->handle;
978
DWORD CountOfBytesRead = 0;
979
980
BAIL_IF_MACRO(!__PHYSFS_ui64FitsAddressSpace(len),ERR_INVALID_ARGUMENT,-1);
981
982
983
984
if(!ReadFile(Handle, buf, (DWORD) len, &CountOfBytesRead, NULL))
BAIL_MACRO(winApiStrError(), -1);
return (PHYSFS_sint64) CountOfBytesRead;
985
986
} /* __PHYSFS_platformRead */
987
988
/* !!! FIXME: this function fails if len > 0xFFFFFFFF. */
989
PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buffer,
990
PHYSFS_uint64 len)
991
{
992
HANDLE Handle = ((WinApiFile *) opaque)->handle;
993
DWORD CountOfBytesWritten = 0;
994
995
BAIL_IF_MACRO(!__PHYSFS_ui64FitsAddressSpace(len),ERR_INVALID_ARGUMENT,-1);
996
997
998
999
if(!WriteFile(Handle, buffer, (DWORD) len, &CountOfBytesWritten, NULL))
BAIL_MACRO(winApiStrError(), -1);
return (PHYSFS_sint64) CountOfBytesWritten;
1000
} /* __PHYSFS_platformWrite */