gistfile1.txt

// ucrtbase.dll
// 10.0.26100.1591
// setlocale=English_United States.utf8

ftest(L"test_utf8_文件.txt");

const VS_FIXEDFILEINFO* GetFileVersion(PVOID ImageBase);

void ftest(PCWSTR pcwz)
{
	if (FILE *fp = _wfopen(pcwz, L"r"))
	{
		fclose(fp);
	}
	else
	{
		return ;
	}

	PVOID hmod;
	if (RtlPcToFileHeader(setlocale, &hmod) == RtlPcToFileHeader(fopen, &hmod) && hmod)
	{
		ULONG s;
		if (PIMAGE_EXPORT_DIRECTORY pied = (PIMAGE_EXPORT_DIRECTORY)RtlImageDirectoryEntryToData(
			hmod, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &s))
		{
			DbgPrint("%hs\n", RtlOffsetToPointer(hmod, pied->Name));
		}
		if (const VS_FIXEDFILEINFO* p = GetFileVersion(hmod))
		{
			DbgPrint("%u.%u.%u.%u\n", HIWORD(p->dwFileVersionMS), LOWORD(p->dwFileVersionMS), 
				HIWORD(p->dwFileVersionLS), LOWORD(p->dwFileVersionLS));
		}
	}

	ULONG UnicodeStringByteCount = (1 + (ULONG)wcslen(pcwz)) * sizeof(wchar_t);
	PSTR filename = 0;
	ULONG cb = 0;
	while (0 <= RtlUnicodeToUTF8N(filename, cb, &cb, pcwz, UnicodeStringByteCount))
	{
		if (filename)
		{
			ULONG i = 2;
			do 
			{
				if (FILE *fp = fopen(filename, "r"))
				{
					fclose(fp);
				}

				if (--i)
				{
					if (PCSTR pcsz = setlocale(LC_ALL, ".UTF8"))
					{
						DbgPrint("setlocale=%hs\n", pcsz);
					}
					else
					{
						break;
					}
				}
			} while (i);

			break;
		}

		filename = (PSTR)alloca(cb);
	}
}

const VS_FIXEDFILEINFO* GetFileVersion(PVOID ImageBase)
{
	static LPCWSTR a[3] = { RT_VERSION, MAKEINTRESOURCE(1) };
	PIMAGE_RESOURCE_DATA_ENTRY pirde;
	DWORD size, wLength, wValueLength;

	struct VS_VERSIONINFO_HEADER {
		WORD             wLength;
		WORD             wValueLength;
		WORD             wType;
		WCHAR            szKey[];
	} *pv;

	if (
		0 <= LdrFindResource_U(ImageBase, a, 3, &pirde) && 
		0 <= LdrAccessResource(ImageBase, pirde, (void**)&pv, &size) && 
		size > sizeof(VS_VERSIONINFO_HEADER) &&
		(wLength = pv->wLength) >= sizeof(VS_VERSIONINFO_HEADER) &&
		(wValueLength = pv->wValueLength) >= sizeof(VS_FIXEDFILEINFO) &&
		wLength <= size &&
		wValueLength <= (wLength - sizeof(VS_VERSIONINFO_HEADER))
		)
	{
		PVOID end = RtlOffsetToPointer(pv, wLength - wValueLength);
		PCWSTR sz = pv->szKey;
		do 
		{
			if (!*sz++)
			{
				VS_FIXEDFILEINFO* pffi = (VS_FIXEDFILEINFO*)((__alignof(VS_FIXEDFILEINFO) - 1 + (ULONG_PTR)sz) & ~(__alignof(VS_FIXEDFILEINFO) - 1));
				return VS_FFI_SIGNATURE == pffi->dwSignature ? pffi : 0;
			}
		} while (sz <= end);
	}

	return 0;
}