/
windows.c
1391 lines (1152 loc) · 41.2 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 & 0x00000000FFFFFFFF)
#define HIGHORDER_UINT64(pos) (PHYSFS_uint32) \
(((pos & 0xFFFFFFFF00000000) >> 32) & 0x00000000FFFFFFFF)
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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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#define UTF8_TO_UNICODE_STACK_MACRO(w_assignto, str) { \
if (str == NULL) \
w_assignto = NULL; \
else { \
const PHYSFS_uint64 len = (PHYSFS_uint64) ((strlen(str) * 4) + 1); \
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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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/* A blatant abuse of pointer casting... */
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static int symLookup(HMODULE dll, void **addr, const char *sym)
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{
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return( (*addr = GetProcAddress(dll, sym)) != NULL );
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} /* symLookup */
static int findApiSymbols(void)
{
HMODULE dll = NULL;
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#define LOOKUP_NOFALLBACK(x, reallyLook) { \
if (reallyLook) \
symLookup(dll, (void **) &p##x, #x); \
else \
p##x = NULL; \
}
#define LOOKUP(x, reallyLook) { \
if ((!reallyLook) || (!symLookup(dll, (void **) &p##x, #x))) \
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p##x = 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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/* 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;
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int success = 0;
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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. */
/* 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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PHYSFS_uint64 __PHYSFS_platformGetThreadID(void)
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{
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return((PHYSFS_uint64) 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(DWORD attr, DWORD tag)
{
return ( (attr & FILE_ATTRIBUTE_REPARSE_POINT) &&
((tag & IO_REPARSE_TAG_SYMLINK) == IO_REPARSE_TAG_SYMLINK) );
} /* isSymlinkAttrs */
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int __PHYSFS_platformIsSymLink(const char *fname)
{
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/* !!! 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);
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619
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621
622
} /* __PHYSFS_platformIsSymlink */
int __PHYSFS_platformIsDirectory(const char *fname)
{
623
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627
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629
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);
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} /* __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;
640
char *retval = (char *) allocator.Malloc(len);
641
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 = '\\';
return(retval);
} /* __PHYSFS_platformCvtToDependent */
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663
void __PHYSFS_platformEnumerateFiles(const char *dirname,
int omitSymLinks,
664
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PHYSFS_EnumFilesCallback callback,
const char *origdir,
666
void *callbackdata)
667
{
668
669
const int unicode = (pFindFirstFileW != NULL) && (pFindNextFileW != NULL);
HANDLE dir = INVALID_HANDLE_VALUE;
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WIN32_FIND_DATA ent;
671
WIN32_FIND_DATAW entw;
672
size_t len = strlen(dirname);
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char *searchPath = NULL;
WCHAR *wSearchPath = NULL;
char *utf8 = NULL;
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/* Allocate a new string for path, maybe '\\', "*", and NULL terminator */
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searchPath = (char *) __PHYSFS_smallAlloc(len + 3);
if (searchPath == NULL)
680
return;
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/* Copy current dirname */
683
strcpy(searchPath, dirname);
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685
/* if there's no '\\' at the end of the path, stick one in there. */
686
if (searchPath[len - 1] != '\\')
687
{
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689
searchPath[len++] = '\\';
searchPath[len] = '\0';
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691
} /* if */
692
/* Append the "*" to the end of the string */
693
strcat(searchPath, "*");
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UTF8_TO_UNICODE_STACK_MACRO(wSearchPath, searchPath);
if (wSearchPath == NULL)
return; /* oh well. */
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if (unicode)
dir = pFindFirstFileW(wSearchPath, &entw);
else
702
{
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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 */
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__PHYSFS_smallFree(wSearchPath);
__PHYSFS_smallFree(searchPath);
if (dir == INVALID_HANDLE_VALUE)
return;
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if (unicode)
{
do
{
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723
const DWORD attrs = entw.dwFileAttributes;
const DWORD tag = entw.dwReserved0;
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const WCHAR *fn = entw.cFileName;
if ((fn[0] == '.') && (fn[1] == '\0'))
continue;
if ((fn[0] == '.') && (fn[1] == '.') && (fn[2] == '\0'))
continue;
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730
if ((omitSymLinks) && (isSymlinkAttrs(attr, tag)))
continue;
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utf8 = unicodeToUtf8Heap(fn);
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if (utf8 != NULL)
{
callback(callbackdata, origdir, utf8);
allocator.Free(utf8);
} /* if */
} while (pFindNextFileW(dir, &entw) != 0);
} /* if */
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else /* ANSI fallback. */
{
do
{
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746
const DWORD attrs = ent.dwFileAttributes;
const DWORD tag = ent.dwReserved0;
747
748
749
750
751
const char *fn = ent.cFileName;
if ((fn[0] == '.') && (fn[1] == '\0'))
continue;
if ((fn[0] == '.') && (fn[1] == '.') && (fn[2] == '\0'))
continue;
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753
if ((omitSymLinks) && (isSymlinkAttrs(attr, tag)))
continue;
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755
utf8 = codepageToUtf8Heap(fn);
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if (utf8 != NULL)
{
callback(callbackdata, origdir, utf8);
allocator.Free(utf8);
} /* if */
} while (FindNextFileA(dir, &ent) != 0);
} /* else */
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769
FindClose(dir);
} /* __PHYSFS_platformEnumerateFiles */
char *__PHYSFS_platformCurrentDir(void)
{
770
771
char *retval = NULL;
WCHAR *wbuf = NULL;
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773
DWORD buflen = 0;
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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);
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if (wbuf[buflen - 2] == '\\')
wbuf[buflen-1] = '\0'; /* just in case... */
else
{
wbuf[buflen - 1] = '\\';
wbuf[buflen] = '\0';
} /* else */
786
787
788
789
retval = unicodeToUtf8Heap(wbuf);
__PHYSFS_smallFree(wbuf);
return(retval);
790
791
792
} /* __PHYSFS_platformCurrentDir */
793
/* this could probably use a cleanup. */
794
795
char *__PHYSFS_platformRealPath(const char *path)
{
796
/* !!! FIXME: try GetFullPathName() instead? */
797
/* this function should be UTF-8 clean. */
798
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800
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802
803
char *retval = NULL;
char *p = NULL;
BAIL_IF_MACRO(path == NULL, ERR_INVALID_ARGUMENT, NULL);
BAIL_IF_MACRO(*path == '\0', ERR_INVALID_ARGUMENT, NULL);
804
retval = (char *) allocator.Malloc(MAX_PATH);
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811
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815
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818
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)
{
819
allocator.Free(retval);
820
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822
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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 */
865
allocator.Free(currentDir);
866
867
868
869
870
871
872
} /* else */
/* (whew.) Ok, now take out "." and ".." path entries... */
p = retval;
while ( (p = strstr(p, "\\.")) != NULL)
{
873
/* it's a "." entry that doesn't end the string. */
874
875
876
if (p[2] == '\\')
memmove(p + 1, p + 3, strlen(p + 3) + 1);
877
/* it's a "." entry that ends the string. */
878
879
880
else if (p[2] == '\0')
p[0] = '\0';
881
/* it's a ".." entry. */
882
883
884
885
886
887
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889
890
891
892
893
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895
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897
898
899
900
901
902
903
904
905
906
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 */
907
/* shrink the retval's memory block if possible... */
908
p = (char *) allocator.Realloc(retval, strlen(retval) + 1);
909
910
911
912
if (p != NULL)
retval = p;
return(retval);
913
914
915
916
917
} /* __PHYSFS_platformRealPath */
int __PHYSFS_platformMkDir(const char *path)
{
918
919
920
921
922
923
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);
924
925
926
return(1);
} /* __PHYSFS_platformMkDir */
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
/*
* Get OS info and save the important parts.
*
* Returns non-zero if successful, otherwise it returns zero on failure.
*/
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 */
943
944
int __PHYSFS_platformInit(void)
{
945
BAIL_IF_MACRO(!getOSInfo(), NULL, 0);
946
BAIL_IF_MACRO(!findApiSymbols(), NULL, 0);
947
948
949
BAIL_IF_MACRO(!determineUserDir(), NULL, 0);
return(1); /* It's all good */
} /* __PHYSFS_platformInit */
950
951
952
953
int __PHYSFS_platformDeinit(void)
{
954
955
956
957
958
HANDLE *libs[] = { &libKernel32, &libUserEnv, &libAdvApi32, NULL };
int i;
allocator.Free(userDir);
userDir = NULL;
959
960
for (i = 0; libs[i] != NULL; i++)
961
{
962
963
964
965
966
const HANDLE lib = *(libs[i]);
if (lib)
FreeLibrary(lib);
*(libs[i]) = NULL;
} /* for */
967
968
969
970
971
972
973
974
return(1); /* It's all good */
} /* __PHYSFS_platformDeinit */
static void *doOpen(const char *fname, DWORD mode, DWORD creation, int rdonly)
{
HANDLE fileHandle;
975
976
WinApiFile *retval;
WCHAR *wfname;
977
978
979
980
981
982
UTF8_TO_UNICODE_STACK_MACRO(wfname, fname);
BAIL_IF_MACRO(wfname == NULL, ERR_OUT_OF_MEMORY, NULL);
fileHandle = pCreateFileW(wfname, mode, FILE_SHARE_READ, NULL,
creation, FILE_ATTRIBUTE_NORMAL, NULL);
__PHYSFS_smallFree(wfname);
983
984
985
BAIL_IF_MACRO
(
986
fileHandle == INVALID_HANDLE_VALUE,
987
winApiStrError(), NULL
988
);
989
990
retval = (WinApiFile *) allocator.Malloc(sizeof (WinApiFile));
991
if (retval == NULL)
992
{
993
994
CloseHandle(fileHandle);
BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
995
} /* if */
996
997
998
999
1000
retval->readonly = rdonly;
retval->handle = fileHandle;
return(retval);
} /* doOpen */