static bool get_32bit_system_dll_ver(const wchar_t *system_lib,
struct win_version_info *ver)
{
wchar_t path[MAX_PATH];
UINT ret;
#ifdef _WIN64
ret = GetSystemWow64DirectoryW(path, MAX_PATH);
#else
ret = GetSystemDirectoryW(path, MAX_PATH);
#endif
if (!ret) {
blog(LOG_ERROR, "Failed to get windows 32bit system path: "
"%lu", GetLastError());
return false;
}
wcscat(path, L"\\");
wcscat(path, system_lib);
return get_dll_ver(path, ver);
}
void get_win_ver(struct win_version_info *info)
{
static struct win_version_info ver = {0};
static bool got_version = false;
if (!info)
return;
if (!got_version) {
get_dll_ver(L"kernel32", &ver);
got_version = true;
if (ver.major == 10) {
HKEY key;
DWORD size, win10_revision;
LSTATUS status;
status = RegOpenKeyW(HKEY_LOCAL_MACHINE,
WINVER_REG_KEY, &key);
if (status != ERROR_SUCCESS)
return;
size = sizeof(win10_revision);
status = RegQueryValueExW(key, L"UBR", NULL, NULL,
(LPBYTE)&win10_revision, &size);
if (status == ERROR_SUCCESS)
ver.revis = (int)win10_revision > ver.revis ?
(int)win10_revision : ver.revis;
RegCloseKey(key);
}
}
*info = ver;
}