try to set variable from windows

Signed-off-by: Daniel Schaefer <dhs@frame.work>

Author: JohnAZoidberg

framework_lib/src/os_specific.rs

@@ -19,3 +19,24 @@ pub fn sleep(micros: u64) {
         bs.stall(micros as usize);
     }
 }
+
+#[cfg(windows)]
+pub fn set_dbx() -> bool {
+    set_uefi_var("dbx", "d719b2cb-3d3a-4596-a3bc-dad00e67656f", &[], 0)
+}
+
+#[cfg(windows)]
+pub fn set_uefi_var(name: &str, guid: &str, value: &[u8], attributes: u32) -> bool {
+    windows_sys::Win32::System::WindowsProgramming
+    unsafe {
+      SetFirmwareEnvironmentVariableExW(
+          // PCWSTR
+          HSTRING::from(name),
+          // PCWSTR
+          HSTRING::from(guid),
+          value.as_ptr(),
+          value.len(),
+          attributes
+      )
+    }
+}