mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2026-03-20 01:46:41 +08:00
614 lines
22 KiB
Rust
614 lines
22 KiB
Rust
//! RustDesk HID Adapter
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//!
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//! Converts RustDesk HID events (KeyEvent, MouseEvent) to One-KVM HID events.
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use super::protocol::hbb::message::key_event as ke_union;
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use super::protocol::{ControlKey, KeyEvent, MouseEvent};
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use crate::hid::{
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KeyEventType, KeyboardEvent, KeyboardModifiers, MouseButton, MouseEvent as OneKvmMouseEvent,
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MouseEventType,
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};
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use protobuf::Enum;
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/// Mouse event types from RustDesk protocol
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/// mask = (button << 3) | event_type
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pub mod mouse_type {
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pub const MOVE: i32 = 0;
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pub const DOWN: i32 = 1;
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pub const UP: i32 = 2;
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pub const WHEEL: i32 = 3;
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pub const TRACKPAD: i32 = 4;
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pub const MOVE_RELATIVE: i32 = 5;
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}
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/// Mouse button IDs from RustDesk protocol (before left shift by 3)
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pub mod mouse_button {
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pub const LEFT: i32 = 0x01;
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pub const RIGHT: i32 = 0x02;
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pub const WHEEL: i32 = 0x04;
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pub const BACK: i32 = 0x08;
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pub const FORWARD: i32 = 0x10;
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}
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/// Convert RustDesk MouseEvent to One-KVM MouseEvent(s)
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/// Returns a Vec because a single RustDesk event may need multiple One-KVM events
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/// (e.g., move + button + scroll)
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pub fn convert_mouse_event(
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event: &MouseEvent,
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screen_width: u32,
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screen_height: u32,
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relative_mode: bool,
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) -> Vec<OneKvmMouseEvent> {
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let mut events = Vec::new();
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// Parse RustDesk mask format: (button << 3) | event_type
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let event_type = event.mask & 0x07;
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let button_id = event.mask >> 3;
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let include_abs_move = !relative_mode;
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match event_type {
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mouse_type::MOVE => {
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// RustDesk uses absolute coordinates
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let x = event.x.max(0) as u32;
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let y = event.y.max(0) as u32;
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// Normalize to 0-32767 range for absolute mouse (USB HID standard)
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let abs_x = ((x as u64 * 32767) / screen_width.max(1) as u64) as i32;
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let abs_y = ((y as u64 * 32767) / screen_height.max(1) as u64) as i32;
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// Move event - may have button held down (button_id > 0 means dragging)
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// Just send move, button state is tracked separately by HID backend
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events.push(OneKvmMouseEvent {
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event_type: MouseEventType::MoveAbs,
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x: abs_x,
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y: abs_y,
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button: None,
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scroll: 0,
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});
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}
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mouse_type::MOVE_RELATIVE => {
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// Relative movement uses delta values directly (dx, dy).
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events.push(OneKvmMouseEvent {
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event_type: MouseEventType::Move,
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x: event.x,
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y: event.y,
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button: None,
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scroll: 0,
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});
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}
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mouse_type::DOWN => {
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if include_abs_move {
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// Button down - first move, then press
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let x = event.x.max(0) as u32;
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let y = event.y.max(0) as u32;
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let abs_x = ((x as u64 * 32767) / screen_width.max(1) as u64) as i32;
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let abs_y = ((y as u64 * 32767) / screen_height.max(1) as u64) as i32;
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events.push(OneKvmMouseEvent {
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event_type: MouseEventType::MoveAbs,
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x: abs_x,
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y: abs_y,
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button: None,
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scroll: 0,
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});
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}
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if let Some(button) = button_id_to_button(button_id) {
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events.push(OneKvmMouseEvent {
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event_type: MouseEventType::Down,
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x: 0,
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y: 0,
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button: Some(button),
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scroll: 0,
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});
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}
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}
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mouse_type::UP => {
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if include_abs_move {
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// Button up - first move, then release
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let x = event.x.max(0) as u32;
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let y = event.y.max(0) as u32;
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let abs_x = ((x as u64 * 32767) / screen_width.max(1) as u64) as i32;
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let abs_y = ((y as u64 * 32767) / screen_height.max(1) as u64) as i32;
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events.push(OneKvmMouseEvent {
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event_type: MouseEventType::MoveAbs,
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x: abs_x,
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y: abs_y,
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button: None,
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scroll: 0,
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});
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}
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if let Some(button) = button_id_to_button(button_id) {
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events.push(OneKvmMouseEvent {
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event_type: MouseEventType::Up,
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x: 0,
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y: 0,
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button: Some(button),
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scroll: 0,
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});
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}
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}
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mouse_type::WHEEL => {
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if include_abs_move {
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// Scroll event - move first, then scroll
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let x = event.x.max(0) as u32;
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let y = event.y.max(0) as u32;
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let abs_x = ((x as u64 * 32767) / screen_width.max(1) as u64) as i32;
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let abs_y = ((y as u64 * 32767) / screen_height.max(1) as u64) as i32;
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events.push(OneKvmMouseEvent {
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event_type: MouseEventType::MoveAbs,
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x: abs_x,
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y: abs_y,
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button: None,
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scroll: 0,
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});
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}
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// RustDesk encodes scroll direction in the y coordinate
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// Positive y = scroll up, Negative y = scroll down
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// The button_id field is not used for direction
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let scroll = if event.y > 0 { 1i8 } else { -1i8 };
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events.push(OneKvmMouseEvent {
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event_type: MouseEventType::Scroll,
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x: 0,
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y: 0,
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button: None,
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scroll,
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});
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}
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_ => {
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if include_abs_move {
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// Unknown event type, just move
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let x = event.x.max(0) as u32;
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let y = event.y.max(0) as u32;
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let abs_x = ((x as u64 * 32767) / screen_width.max(1) as u64) as i32;
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let abs_y = ((y as u64 * 32767) / screen_height.max(1) as u64) as i32;
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events.push(OneKvmMouseEvent {
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event_type: MouseEventType::MoveAbs,
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x: abs_x,
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y: abs_y,
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button: None,
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scroll: 0,
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});
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}
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}
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}
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events
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}
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/// Convert RustDesk button ID to One-KVM MouseButton
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fn button_id_to_button(button_id: i32) -> Option<MouseButton> {
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match button_id {
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mouse_button::LEFT => Some(MouseButton::Left),
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mouse_button::RIGHT => Some(MouseButton::Right),
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mouse_button::WHEEL => Some(MouseButton::Middle),
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_ => None,
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}
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}
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/// Convert RustDesk KeyEvent to One-KVM KeyboardEvent
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///
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/// RustDesk KeyEvent has two modes:
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/// - down=true/false: Key state (pressed/released)
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/// - press=true: Complete key press (down + up), used for typing
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///
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/// For press=true events, we only send Down and let the caller handle
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/// the timing for Up event if needed. Most systems handle this correctly.
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pub fn convert_key_event(event: &KeyEvent) -> Option<KeyboardEvent> {
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// Determine if this is a key down or key up event
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// press=true means "key was pressed" (down event)
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// down=true means key is currently held down
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// down=false with press=false means key was released
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let event_type = if event.down || event.press {
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KeyEventType::Down
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} else {
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KeyEventType::Up
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};
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// For modifier keys sent as ControlKey, don't include them in modifiers
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// to avoid double-pressing. The modifier will be tracked by HID state.
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let modifiers = if is_modifier_control_key(event) {
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KeyboardModifiers::default()
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} else {
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parse_modifiers(event)
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};
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// Handle control keys
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if let Some(ke_union::Union::ControlKey(ck)) = &event.union {
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if let Some(key) = control_key_to_hid(ck.value()) {
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return Some(KeyboardEvent {
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event_type,
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key,
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modifiers,
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is_usb_hid: true, // Already converted to USB HID code
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});
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}
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}
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// Handle character keys (chr field contains platform-specific keycode)
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if let Some(ke_union::Union::Chr(chr)) = &event.union {
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// chr contains USB HID scancode on Windows, X11 keycode on Linux
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if let Some(key) = keycode_to_hid(*chr) {
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return Some(KeyboardEvent {
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event_type,
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key,
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modifiers,
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is_usb_hid: true, // Already converted to USB HID code
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});
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}
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}
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// Handle unicode (for text input, we'd need to convert to scancodes)
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// Unicode input requires more complex handling, skip for now
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None
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}
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/// Check if the event is a modifier key sent as ControlKey
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fn is_modifier_control_key(event: &KeyEvent) -> bool {
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if let Some(ke_union::Union::ControlKey(ck)) = &event.union {
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let val = ck.value();
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return val == ControlKey::Control.value()
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|| val == ControlKey::Shift.value()
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|| val == ControlKey::Alt.value()
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|| val == ControlKey::Meta.value()
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|| val == ControlKey::RControl.value()
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|| val == ControlKey::RShift.value()
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|| val == ControlKey::RAlt.value();
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}
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false
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}
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/// Parse modifier keys from RustDesk KeyEvent into KeyboardModifiers
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fn parse_modifiers(event: &KeyEvent) -> KeyboardModifiers {
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let mut modifiers = KeyboardModifiers::default();
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for modifier in &event.modifiers {
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let val = modifier.value();
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match val {
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x if x == ControlKey::Control.value() => modifiers.left_ctrl = true,
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x if x == ControlKey::Shift.value() => modifiers.left_shift = true,
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x if x == ControlKey::Alt.value() => modifiers.left_alt = true,
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x if x == ControlKey::Meta.value() => modifiers.left_meta = true,
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x if x == ControlKey::RControl.value() => modifiers.right_ctrl = true,
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x if x == ControlKey::RShift.value() => modifiers.right_shift = true,
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x if x == ControlKey::RAlt.value() => modifiers.right_alt = true,
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_ => {}
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}
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}
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modifiers
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}
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/// Convert RustDesk ControlKey to USB HID usage code
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fn control_key_to_hid(key: i32) -> Option<u8> {
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match key {
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x if x == ControlKey::Alt as i32 => Some(0xE2), // Left Alt
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x if x == ControlKey::Backspace as i32 => Some(0x2A),
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x if x == ControlKey::CapsLock as i32 => Some(0x39),
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x if x == ControlKey::Control as i32 => Some(0xE0), // Left Ctrl
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x if x == ControlKey::Delete as i32 => Some(0x4C),
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x if x == ControlKey::DownArrow as i32 => Some(0x51),
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x if x == ControlKey::End as i32 => Some(0x4D),
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x if x == ControlKey::Escape as i32 => Some(0x29),
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x if x == ControlKey::F1 as i32 => Some(0x3A),
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x if x == ControlKey::F2 as i32 => Some(0x3B),
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x if x == ControlKey::F3 as i32 => Some(0x3C),
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x if x == ControlKey::F4 as i32 => Some(0x3D),
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x if x == ControlKey::F5 as i32 => Some(0x3E),
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x if x == ControlKey::F6 as i32 => Some(0x3F),
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x if x == ControlKey::F7 as i32 => Some(0x40),
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x if x == ControlKey::F8 as i32 => Some(0x41),
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x if x == ControlKey::F9 as i32 => Some(0x42),
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x if x == ControlKey::F10 as i32 => Some(0x43),
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x if x == ControlKey::F11 as i32 => Some(0x44),
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x if x == ControlKey::F12 as i32 => Some(0x45),
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x if x == ControlKey::Home as i32 => Some(0x4A),
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x if x == ControlKey::LeftArrow as i32 => Some(0x50),
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x if x == ControlKey::Meta as i32 => Some(0xE3), // Left GUI/Windows
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x if x == ControlKey::PageDown as i32 => Some(0x4E),
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x if x == ControlKey::PageUp as i32 => Some(0x4B),
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x if x == ControlKey::Return as i32 => Some(0x28),
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x if x == ControlKey::RightArrow as i32 => Some(0x4F),
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x if x == ControlKey::Shift as i32 => Some(0xE1), // Left Shift
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x if x == ControlKey::Space as i32 => Some(0x2C),
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x if x == ControlKey::Tab as i32 => Some(0x2B),
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x if x == ControlKey::UpArrow as i32 => Some(0x52),
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x if x == ControlKey::Numpad0 as i32 => Some(0x62),
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x if x == ControlKey::Numpad1 as i32 => Some(0x59),
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x if x == ControlKey::Numpad2 as i32 => Some(0x5A),
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x if x == ControlKey::Numpad3 as i32 => Some(0x5B),
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x if x == ControlKey::Numpad4 as i32 => Some(0x5C),
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x if x == ControlKey::Numpad5 as i32 => Some(0x5D),
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x if x == ControlKey::Numpad6 as i32 => Some(0x5E),
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x if x == ControlKey::Numpad7 as i32 => Some(0x5F),
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x if x == ControlKey::Numpad8 as i32 => Some(0x60),
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x if x == ControlKey::Numpad9 as i32 => Some(0x61),
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x if x == ControlKey::Insert as i32 => Some(0x49),
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x if x == ControlKey::Pause as i32 => Some(0x48),
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x if x == ControlKey::Scroll as i32 => Some(0x47),
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x if x == ControlKey::NumLock as i32 => Some(0x53),
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x if x == ControlKey::RShift as i32 => Some(0xE5),
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x if x == ControlKey::RControl as i32 => Some(0xE4),
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x if x == ControlKey::RAlt as i32 => Some(0xE6),
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x if x == ControlKey::Multiply as i32 => Some(0x55),
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x if x == ControlKey::Add as i32 => Some(0x57),
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x if x == ControlKey::Subtract as i32 => Some(0x56),
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x if x == ControlKey::Decimal as i32 => Some(0x63),
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x if x == ControlKey::Divide as i32 => Some(0x54),
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x if x == ControlKey::NumpadEnter as i32 => Some(0x58),
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_ => None,
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}
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}
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/// Convert platform keycode to USB HID usage code
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/// Handles Windows Virtual Key Codes, X11 keycodes, and ASCII codes
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fn keycode_to_hid(keycode: u32) -> Option<u8> {
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// First try ASCII code mapping (RustDesk often sends ASCII codes)
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if let Some(hid) = ascii_to_hid(keycode) {
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return Some(hid);
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}
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// Then try Windows Virtual Key Code mapping
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if let Some(hid) = windows_vk_to_hid(keycode) {
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return Some(hid);
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}
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// Fall back to X11 keycode mapping for Linux clients
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x11_keycode_to_hid(keycode)
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}
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/// Convert ASCII code to USB HID usage code
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fn ascii_to_hid(ascii: u32) -> Option<u8> {
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match ascii {
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// Lowercase letters a-z (ASCII 97-122)
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97..=122 => {
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// USB HID: a=0x04, b=0x05, ..., z=0x1D
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Some((ascii - 97 + 0x04) as u8)
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}
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// Uppercase letters A-Z (ASCII 65-90)
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65..=90 => {
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// USB HID: A=0x04, B=0x05, ..., Z=0x1D (same as lowercase)
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Some((ascii - 65 + 0x04) as u8)
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}
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// Numbers 0-9 (ASCII 48-57)
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48 => Some(0x27), // 0
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49..=57 => Some((ascii - 49 + 0x1E) as u8), // 1-9
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// Common punctuation
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32 => Some(0x2C), // Space
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13 => Some(0x28), // Enter (CR)
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10 => Some(0x28), // Enter (LF)
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9 => Some(0x2B), // Tab
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27 => Some(0x29), // Escape
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8 => Some(0x2A), // Backspace
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127 => Some(0x4C), // Delete
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// Symbols (US keyboard layout)
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45 => Some(0x2D), // -
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61 => Some(0x2E), // =
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91 => Some(0x2F), // [
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93 => Some(0x30), // ]
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92 => Some(0x31), // \
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59 => Some(0x33), // ;
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39 => Some(0x34), // '
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96 => Some(0x35), // `
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44 => Some(0x36), // ,
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46 => Some(0x37), // .
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47 => Some(0x38), // /
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_ => None,
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}
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}
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/// Convert Windows Virtual Key Code to USB HID usage code
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fn windows_vk_to_hid(vk: u32) -> Option<u8> {
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match vk {
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// Letters A-Z (VK_A=0x41 to VK_Z=0x5A)
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0x41..=0x5A => {
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// USB HID: A=0x04, B=0x05, ..., Z=0x1D
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let letter = (vk - 0x41) as u8;
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Some(match letter {
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0 => 0x04, // A
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1 => 0x05, // B
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2 => 0x06, // C
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3 => 0x07, // D
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4 => 0x08, // E
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5 => 0x09, // F
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6 => 0x0A, // G
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7 => 0x0B, // H
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8 => 0x0C, // I
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9 => 0x0D, // J
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10 => 0x0E, // K
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11 => 0x0F, // L
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12 => 0x10, // M
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13 => 0x11, // N
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14 => 0x12, // O
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15 => 0x13, // P
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16 => 0x14, // Q
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17 => 0x15, // R
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18 => 0x16, // S
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19 => 0x17, // T
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20 => 0x18, // U
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21 => 0x19, // V
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22 => 0x1A, // W
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23 => 0x1B, // X
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24 => 0x1C, // Y
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25 => 0x1D, // Z
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_ => return None,
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})
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}
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// Numbers 0-9 (VK_0=0x30 to VK_9=0x39)
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0x30 => Some(0x27), // 0
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0x31..=0x39 => Some((vk - 0x31 + 0x1E) as u8), // 1-9
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// Numpad 0-9 (VK_NUMPAD0=0x60 to VK_NUMPAD9=0x69)
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0x60 => Some(0x62), // Numpad 0
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0x61..=0x69 => Some((vk - 0x61 + 0x59) as u8), // Numpad 1-9
|
|
// Numpad operators
|
|
0x6A => Some(0x55), // Numpad *
|
|
0x6B => Some(0x57), // Numpad +
|
|
0x6D => Some(0x56), // Numpad -
|
|
0x6E => Some(0x63), // Numpad .
|
|
0x6F => Some(0x54), // Numpad /
|
|
// Function keys F1-F12 (VK_F1=0x70 to VK_F12=0x7B)
|
|
0x70..=0x7B => Some((vk - 0x70 + 0x3A) as u8),
|
|
// Special keys
|
|
0x08 => Some(0x2A), // Backspace
|
|
0x09 => Some(0x2B), // Tab
|
|
0x0D => Some(0x28), // Enter
|
|
0x1B => Some(0x29), // Escape
|
|
0x20 => Some(0x2C), // Space
|
|
0x21 => Some(0x4B), // Page Up
|
|
0x22 => Some(0x4E), // Page Down
|
|
0x23 => Some(0x4D), // End
|
|
0x24 => Some(0x4A), // Home
|
|
0x25 => Some(0x50), // Left Arrow
|
|
0x26 => Some(0x52), // Up Arrow
|
|
0x27 => Some(0x4F), // Right Arrow
|
|
0x28 => Some(0x51), // Down Arrow
|
|
0x2D => Some(0x49), // Insert
|
|
0x2E => Some(0x4C), // Delete
|
|
// OEM keys (US keyboard layout)
|
|
0xBA => Some(0x33), // ; :
|
|
0xBB => Some(0x2E), // = +
|
|
0xBC => Some(0x36), // , <
|
|
0xBD => Some(0x2D), // - _
|
|
0xBE => Some(0x37), // . >
|
|
0xBF => Some(0x38), // / ?
|
|
0xC0 => Some(0x35), // ` ~
|
|
0xDB => Some(0x2F), // [ {
|
|
0xDC => Some(0x31), // \ |
|
|
0xDD => Some(0x30), // ] }
|
|
0xDE => Some(0x34), // ' "
|
|
// Lock keys
|
|
0x14 => Some(0x39), // Caps Lock
|
|
0x90 => Some(0x53), // Num Lock
|
|
0x91 => Some(0x47), // Scroll Lock
|
|
// Print Screen, Pause
|
|
0x2C => Some(0x46), // Print Screen
|
|
0x13 => Some(0x48), // Pause
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
/// Convert X11 keycode to USB HID usage code (for Linux clients)
|
|
fn x11_keycode_to_hid(keycode: u32) -> Option<u8> {
|
|
match keycode {
|
|
// Numbers: X11 keycode 10="1", 11="2", ..., 18="9", 19="0"
|
|
10..=18 => Some((keycode - 10 + 0x1E) as u8), // 1-9
|
|
19 => Some(0x27), // 0
|
|
// Punctuation
|
|
20 => Some(0x2D), // -
|
|
21 => Some(0x2E), // =
|
|
34 => Some(0x2F), // [
|
|
35 => Some(0x30), // ]
|
|
// Letters (X11 keycodes are row-based)
|
|
// Row 1: q(24) w(25) e(26) r(27) t(28) y(29) u(30) i(31) o(32) p(33)
|
|
24 => Some(0x14), // q
|
|
25 => Some(0x1A), // w
|
|
26 => Some(0x08), // e
|
|
27 => Some(0x15), // r
|
|
28 => Some(0x17), // t
|
|
29 => Some(0x1C), // y
|
|
30 => Some(0x18), // u
|
|
31 => Some(0x0C), // i
|
|
32 => Some(0x12), // o
|
|
33 => Some(0x13), // p
|
|
// Row 2: a(38) s(39) d(40) f(41) g(42) h(43) j(44) k(45) l(46)
|
|
38 => Some(0x04), // a
|
|
39 => Some(0x16), // s
|
|
40 => Some(0x07), // d
|
|
41 => Some(0x09), // f
|
|
42 => Some(0x0A), // g
|
|
43 => Some(0x0B), // h
|
|
44 => Some(0x0D), // j
|
|
45 => Some(0x0E), // k
|
|
46 => Some(0x0F), // l
|
|
47 => Some(0x33), // ;
|
|
48 => Some(0x34), // '
|
|
49 => Some(0x35), // `
|
|
51 => Some(0x31), // \
|
|
// Row 3: z(52) x(53) c(54) v(55) b(56) n(57) m(58)
|
|
52 => Some(0x1D), // z
|
|
53 => Some(0x1B), // x
|
|
54 => Some(0x06), // c
|
|
55 => Some(0x19), // v
|
|
56 => Some(0x05), // b
|
|
57 => Some(0x11), // n
|
|
58 => Some(0x10), // m
|
|
59 => Some(0x36), // ,
|
|
60 => Some(0x37), // .
|
|
61 => Some(0x38), // /
|
|
// Space
|
|
65 => Some(0x2C),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn test_control_key_mapping() {
|
|
assert_eq!(control_key_to_hid(ControlKey::Escape.value()), Some(0x29));
|
|
assert_eq!(control_key_to_hid(ControlKey::Return.value()), Some(0x28));
|
|
assert_eq!(control_key_to_hid(ControlKey::Space.value()), Some(0x2C));
|
|
}
|
|
|
|
#[test]
|
|
fn test_convert_mouse_move() {
|
|
let mut event = MouseEvent::new();
|
|
event.x = 500;
|
|
event.y = 300;
|
|
event.mask = mouse_type::MOVE; // Pure move event
|
|
|
|
let events = convert_mouse_event(&event, 1920, 1080, false);
|
|
assert!(!events.is_empty());
|
|
assert_eq!(events[0].event_type, MouseEventType::MoveAbs);
|
|
}
|
|
|
|
#[test]
|
|
fn test_convert_mouse_button_down() {
|
|
let mut event = MouseEvent::new();
|
|
event.x = 500;
|
|
event.y = 300;
|
|
event.mask = (mouse_button::LEFT << 3) | mouse_type::DOWN;
|
|
|
|
let events = convert_mouse_event(&event, 1920, 1080, false);
|
|
assert!(events.len() >= 2);
|
|
// Should have a button down event
|
|
assert!(events
|
|
.iter()
|
|
.any(|e| e.event_type == MouseEventType::Down && e.button == Some(MouseButton::Left)));
|
|
}
|
|
|
|
#[test]
|
|
fn test_convert_mouse_move_relative() {
|
|
let mut event = MouseEvent::new();
|
|
event.x = -12;
|
|
event.y = 8;
|
|
event.mask = mouse_type::MOVE_RELATIVE;
|
|
|
|
let events = convert_mouse_event(&event, 1920, 1080, true);
|
|
assert_eq!(events.len(), 1);
|
|
assert_eq!(events[0].event_type, MouseEventType::Move);
|
|
assert_eq!(events[0].x, -12);
|
|
assert_eq!(events[0].y, 8);
|
|
}
|
|
|
|
#[test]
|
|
fn test_convert_key_event() {
|
|
use protobuf::EnumOrUnknown;
|
|
let mut key_event = KeyEvent::new();
|
|
key_event.down = true;
|
|
key_event.press = false;
|
|
key_event.union = Some(ke_union::Union::ControlKey(EnumOrUnknown::new(
|
|
ControlKey::Return,
|
|
)));
|
|
|
|
let result = convert_key_event(&key_event);
|
|
assert!(result.is_some());
|
|
|
|
let kb_event = result.unwrap();
|
|
assert_eq!(kb_event.event_type, KeyEventType::Down);
|
|
assert_eq!(kb_event.key, 0x28); // Return key USB HID code
|
|
}
|
|
}
|