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fix transmuting to pointer types UB

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This commit is contained in:
Ferdinand Schober
2024-06-25 13:49:51 +02:00
committed by Ferdinand Schober
parent 1c37579ae5
commit fc17f7033f
1 changed files with 3 additions and 6 deletions
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9
src/capture/windows.rs
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@@ -96,8 +96,7 @@ unsafe fn get_event_tid() -> Option<u32> {
static mut ENTRY_POINT: (i32, i32) = (0, 0);
fn to_mouse_event(wparam: WPARAM, lparam: LPARAM) -> Option<PointerEvent> {
let mouse_low_level: MSLLHOOKSTRUCT =
unsafe { *std::mem::transmute::<LPARAM, *const MSLLHOOKSTRUCT>(lparam) };
let mouse_low_level: MSLLHOOKSTRUCT = unsafe { *(lparam.0 as *const MSLLHOOKSTRUCT) };
match wparam {
WPARAM(p) if p == WM_LBUTTONDOWN as usize => Some(PointerEvent::Button {
time: 0,
@@ -167,8 +166,7 @@ fn to_mouse_event(wparam: WPARAM, lparam: LPARAM) -> Option<PointerEvent> {
}
unsafe fn to_key_event(wparam: WPARAM, lparam: LPARAM) -> Option<KeyboardEvent> {
let kybrdllhookstruct: KBDLLHOOKSTRUCT =
*std::mem::transmute::<LPARAM, *const KBDLLHOOKSTRUCT>(lparam);
let kybrdllhookstruct: KBDLLHOOKSTRUCT = *(lparam.0 as *const KBDLLHOOKSTRUCT);
let mut scan_code = kybrdllhookstruct.scanCode;
log::trace!("scan_code: {scan_code}");
if kybrdllhookstruct.flags.contains(LLKHF_EXTENDED) {
@@ -247,8 +245,7 @@ unsafe fn check_client_activation(wparam: WPARAM, lparam: LPARAM) -> bool {
if wparam.0 != WM_MOUSEMOVE as usize {
return ACTIVE_CLIENT.is_some();
}
let mouse_low_level: MSLLHOOKSTRUCT =
unsafe { *std::mem::transmute::<LPARAM, *const MSLLHOOKSTRUCT>(lparam) };
let mouse_low_level: MSLLHOOKSTRUCT = *(lparam.0 as *const MSLLHOOKSTRUCT);
static mut PREV_POS: Option<(i32, i32)> = None;
let curr_pos = (mouse_low_level.pt.x, mouse_low_level.pt.y);
let prev_pos = PREV_POS.unwrap_or(curr_pos);