rustdesk/src/server/uinput.rs

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use crate::ipc::{self, new_listener, Connection, Data, DataKeyboard, DataMouse};
use enigo::{Key, KeyboardControllable, MouseButton, MouseControllable};
use evdev::{
uinput::{VirtualDevice, VirtualDeviceBuilder},
AttributeSet, EventType, InputEvent,
};
use hbb_common::{allow_err, bail, log, tokio, ResultType};
static IPC_CONN_TIMEOUT: u64 = 1000;
static IPC_REQUEST_TIMEOUT: u64 = 1000;
static IPC_POSTFIX_KEYBOARD: &str = "_uinput_keyboard";
static IPC_POSTFIX_MOUSE: &str = "_uinput_mouse";
static IPC_POSTFIX_CONTROL: &str = "_uinput_control";
pub mod client {
use super::*;
pub struct UInputKeyboard {
conn: Connection,
}
impl UInputKeyboard {
pub async fn new() -> ResultType<Self> {
let conn = ipc::connect(IPC_CONN_TIMEOUT, IPC_POSTFIX_KEYBOARD).await?;
Ok(Self { conn })
}
#[tokio::main(flavor = "current_thread")]
async fn send(&mut self, data: Data) -> ResultType<()> {
self.conn.send(&data).await
}
#[tokio::main(flavor = "current_thread")]
async fn send_get_key_state(&mut self, data: Data) -> ResultType<bool> {
self.conn.send(&data).await?;
match self.conn.next_timeout(IPC_REQUEST_TIMEOUT).await {
Ok(Some(Data::KeyboardResponse(ipc::DataKeyboardResponse::GetKeyState(state)))) => {
Ok(state)
}
Ok(Some(resp)) => {
// FATAL error!!!
bail!(
"FATAL error, wait keyboard result other response: {:?}",
&resp
);
}
Ok(None) => {
// FATAL error!!!
// Maybe wait later
bail!("FATAL error, wait keyboard result, receive None",);
}
Err(e) => {
// FATAL error!!!
bail!(
"FATAL error, wait keyboard result timeout {}, {}",
&e,
IPC_REQUEST_TIMEOUT
);
}
}
}
}
impl KeyboardControllable for UInputKeyboard {
fn get_key_state(&mut self, key: Key) -> bool {
match self.send_get_key_state(Data::Keyboard(DataKeyboard::GetKeyState(key))) {
Ok(state) => state,
Err(e) => {
// unreachable!()
log::error!("Failed to get key state {}", &e);
false
}
}
}
fn key_sequence(&mut self, sequence: &str) {
allow_err!(self.send(Data::Keyboard(DataKeyboard::Sequence(sequence.to_string()))));
}
// TODO: handle error???
fn key_down(&mut self, key: Key) -> enigo::ResultType {
allow_err!(self.send(Data::Keyboard(DataKeyboard::KeyDown(key))));
Ok(())
}
fn key_up(&mut self, key: Key) {
allow_err!(self.send(Data::Keyboard(DataKeyboard::KeyUp(key))));
}
fn key_click(&mut self, key: Key) {
allow_err!(self.send(Data::Keyboard(DataKeyboard::KeyClick(key))));
}
}
pub struct UInputMouse {
conn: Connection,
}
impl UInputMouse {
pub async fn new() -> ResultType<Self> {
let conn = ipc::connect(IPC_CONN_TIMEOUT, IPC_POSTFIX_MOUSE).await?;
Ok(Self { conn })
}
#[tokio::main(flavor = "current_thread")]
async fn send(&mut self, data: Data) -> ResultType<()> {
self.conn.send(&data).await
}
}
impl MouseControllable for UInputMouse {
fn mouse_move_to(&mut self, x: i32, y: i32) {
allow_err!(self.send(Data::Mouse(DataMouse::MoveTo(x, y))));
}
fn mouse_move_relative(&mut self, x: i32, y: i32) {
allow_err!(self.send(Data::Mouse(DataMouse::MoveRelative(x, y))));
}
// TODO: handle error???
fn mouse_down(&mut self, button: MouseButton) -> enigo::ResultType {
allow_err!(self.send(Data::Mouse(DataMouse::Down(button))));
Ok(())
}
fn mouse_up(&mut self, button: MouseButton) {
allow_err!(self.send(Data::Mouse(DataMouse::Up(button))));
}
fn mouse_click(&mut self, button: MouseButton) {
allow_err!(self.send(Data::Mouse(DataMouse::Click(button))));
}
fn mouse_scroll_x(&mut self, length: i32) {
allow_err!(self.send(Data::Mouse(DataMouse::ScrollX(length))));
}
fn mouse_scroll_y(&mut self, length: i32) {
allow_err!(self.send(Data::Mouse(DataMouse::ScrollY(length))));
}
}
pub async fn set_resolution(minx: i32, maxx: i32, miny: i32, maxy: i32) -> ResultType<()> {
let mut conn = ipc::connect(IPC_CONN_TIMEOUT, IPC_POSTFIX_CONTROL).await?;
conn.send(&Data::Control(ipc::DataControl::Resolution {
minx,
maxx,
miny,
maxy,
}))
.await?;
let _ = conn.next().await?;
Ok(())
}
}
pub mod service {
use super::*;
use hbb_common::lazy_static;
use mouce::MouseActions;
use std::{collections::HashMap, sync::Mutex};
lazy_static::lazy_static! {
static ref KEY_MAP: HashMap<enigo::Key, evdev::Key> = HashMap::from(
[
(enigo::Key::Alt, evdev::Key::KEY_LEFTALT),
(enigo::Key::Backspace, evdev::Key::KEY_BACKSPACE),
(enigo::Key::CapsLock, evdev::Key::KEY_CAPSLOCK),
(enigo::Key::Control, evdev::Key::KEY_LEFTCTRL),
(enigo::Key::Delete, evdev::Key::KEY_DELETE),
(enigo::Key::DownArrow, evdev::Key::KEY_DOWN),
(enigo::Key::End, evdev::Key::KEY_END),
(enigo::Key::Escape, evdev::Key::KEY_ESC),
(enigo::Key::F1, evdev::Key::KEY_F1),
(enigo::Key::F10, evdev::Key::KEY_F10),
(enigo::Key::F11, evdev::Key::KEY_F11),
(enigo::Key::F12, evdev::Key::KEY_F12),
(enigo::Key::F2, evdev::Key::KEY_F2),
(enigo::Key::F3, evdev::Key::KEY_F3),
(enigo::Key::F4, evdev::Key::KEY_F4),
(enigo::Key::F5, evdev::Key::KEY_F5),
(enigo::Key::F6, evdev::Key::KEY_F6),
(enigo::Key::F7, evdev::Key::KEY_F7),
(enigo::Key::F8, evdev::Key::KEY_F8),
(enigo::Key::F9, evdev::Key::KEY_F9),
(enigo::Key::Home, evdev::Key::KEY_HOME),
(enigo::Key::LeftArrow, evdev::Key::KEY_LEFT),
(enigo::Key::Meta, evdev::Key::KEY_LEFTMETA),
(enigo::Key::Option, evdev::Key::KEY_OPTION),
(enigo::Key::PageDown, evdev::Key::KEY_PAGEDOWN),
(enigo::Key::PageUp, evdev::Key::KEY_PAGEUP),
(enigo::Key::Return, evdev::Key::KEY_ENTER),
(enigo::Key::RightArrow, evdev::Key::KEY_RIGHT),
(enigo::Key::Shift, evdev::Key::KEY_LEFTSHIFT),
(enigo::Key::Space, evdev::Key::KEY_SPACE),
(enigo::Key::Tab, evdev::Key::KEY_TAB),
(enigo::Key::UpArrow, evdev::Key::KEY_UP),
(enigo::Key::Numpad0, evdev::Key::KEY_KP0), // check if correct?
(enigo::Key::Numpad1, evdev::Key::KEY_KP1),
(enigo::Key::Numpad2, evdev::Key::KEY_KP2),
(enigo::Key::Numpad3, evdev::Key::KEY_KP3),
(enigo::Key::Numpad4, evdev::Key::KEY_KP4),
(enigo::Key::Numpad5, evdev::Key::KEY_KP5),
(enigo::Key::Numpad6, evdev::Key::KEY_KP6),
(enigo::Key::Numpad7, evdev::Key::KEY_KP7),
(enigo::Key::Numpad8, evdev::Key::KEY_KP8),
(enigo::Key::Numpad9, evdev::Key::KEY_KP9),
(enigo::Key::Cancel, evdev::Key::KEY_CANCEL),
(enigo::Key::Clear, evdev::Key::KEY_CLEAR),
(enigo::Key::Alt, evdev::Key::KEY_LEFTALT),
(enigo::Key::Pause, evdev::Key::KEY_PAUSE),
(enigo::Key::Kana, evdev::Key::KEY_KATAKANA), // check if correct?
(enigo::Key::Hangul, evdev::Key::KEY_HANGEUL), // check if correct?
// (enigo::Key::Junja, evdev::Key::KEY_JUNJA), // map?
// (enigo::Key::Final, evdev::Key::KEY_FINAL), // map?
(enigo::Key::Hanja, evdev::Key::KEY_HANJA),
// (enigo::Key::Kanji, evdev::Key::KEY_KANJI), // map?
// (enigo::Key::Convert, evdev::Key::KEY_CONVERT),
(enigo::Key::Select, evdev::Key::KEY_SELECT),
(enigo::Key::Print, evdev::Key::KEY_PRINT),
// (enigo::Key::Execute, evdev::Key::KEY_EXECUTE),
// (enigo::Key::Snapshot, evdev::Key::KEY_SNAPSHOT),
(enigo::Key::Insert, evdev::Key::KEY_INSERT),
(enigo::Key::Help, evdev::Key::KEY_HELP),
(enigo::Key::Sleep, evdev::Key::KEY_SLEEP),
// (enigo::Key::Separator, evdev::Key::KEY_SEPARATOR),
(enigo::Key::Scroll, evdev::Key::KEY_SCROLLLOCK),
(enigo::Key::NumLock, evdev::Key::KEY_NUMLOCK),
(enigo::Key::RWin, evdev::Key::KEY_RIGHTMETA),
(enigo::Key::Apps, evdev::Key::KEY_CONTEXT_MENU),
(enigo::Key::Multiply, evdev::Key::KEY_KPASTERISK),
(enigo::Key::Add, evdev::Key::KEY_KPPLUS),
(enigo::Key::Subtract, evdev::Key::KEY_KPMINUS),
(enigo::Key::Decimal, evdev::Key::KEY_KPCOMMA), // KEY_KPDOT and KEY_KPCOMMA are exchanged?
(enigo::Key::Divide, evdev::Key::KEY_KPSLASH),
(enigo::Key::Equals, evdev::Key::KEY_KPEQUAL),
(enigo::Key::NumpadEnter, evdev::Key::KEY_KPENTER),
(enigo::Key::RightAlt, evdev::Key::KEY_RIGHTALT),
(enigo::Key::RightControl, evdev::Key::KEY_RIGHTCTRL),
(enigo::Key::RightShift, evdev::Key::KEY_RIGHTSHIFT),
]);
static ref KEY_MAP_LAYOUT: HashMap<char, evdev::Key> = HashMap::from(
[
('a', evdev::Key::KEY_A),
('b', evdev::Key::KEY_B),
('c', evdev::Key::KEY_C),
('d', evdev::Key::KEY_D),
('e', evdev::Key::KEY_E),
('f', evdev::Key::KEY_F),
('g', evdev::Key::KEY_G),
('h', evdev::Key::KEY_H),
('i', evdev::Key::KEY_I),
('j', evdev::Key::KEY_J),
('k', evdev::Key::KEY_K),
('l', evdev::Key::KEY_L),
('m', evdev::Key::KEY_M),
('n', evdev::Key::KEY_N),
('o', evdev::Key::KEY_O),
('p', evdev::Key::KEY_P),
('q', evdev::Key::KEY_Q),
('r', evdev::Key::KEY_R),
('s', evdev::Key::KEY_S),
('t', evdev::Key::KEY_T),
('u', evdev::Key::KEY_U),
('v', evdev::Key::KEY_V),
('w', evdev::Key::KEY_W),
('x', evdev::Key::KEY_X),
('y', evdev::Key::KEY_Y),
('z', evdev::Key::KEY_Z),
('0', evdev::Key::KEY_0),
('1', evdev::Key::KEY_1),
('2', evdev::Key::KEY_2),
('3', evdev::Key::KEY_3),
('4', evdev::Key::KEY_4),
('5', evdev::Key::KEY_5),
('6', evdev::Key::KEY_6),
('7', evdev::Key::KEY_7),
('8', evdev::Key::KEY_8),
('9', evdev::Key::KEY_9),
('`', evdev::Key::KEY_GRAVE),
('-', evdev::Key::KEY_MINUS),
('=', evdev::Key::KEY_EQUAL),
('[', evdev::Key::KEY_LEFTBRACE),
(']', evdev::Key::KEY_RIGHTBRACE),
('\\', evdev::Key::KEY_BACKSLASH),
(',', evdev::Key::KEY_COMMA),
('.', evdev::Key::KEY_DOT),
('/', evdev::Key::KEY_SLASH),
(';', evdev::Key::KEY_SEMICOLON),
('\'', evdev::Key::KEY_APOSTROPHE),
]);
// ((minx, maxx), (miny, maxy))
static ref RESOLUTION: Mutex<((i32, i32), (i32, i32))> = Mutex::new(((0, 0), (0, 0)));
}
fn create_uinput_keyboard() -> ResultType<VirtualDevice> {
// TODO: ensure keys here
let mut keys = AttributeSet::<evdev::Key>::new();
for i in evdev::Key::KEY_ESC.code()..(evdev::Key::BTN_TRIGGER_HAPPY40.code() + 1) {
let key = evdev::Key::new(i);
if !format!("{:?}", &key).contains("unknown key") {
keys.insert(key);
}
}
let mut leds = AttributeSet::<evdev::LedType>::new();
leds.insert(evdev::LedType::LED_NUML);
leds.insert(evdev::LedType::LED_CAPSL);
leds.insert(evdev::LedType::LED_SCROLLL);
let mut miscs = AttributeSet::<evdev::MiscType>::new();
miscs.insert(evdev::MiscType::MSC_SCAN);
let keyboard = VirtualDeviceBuilder::new()?
.name("RustDesk UInput Keyboard")
.with_keys(&keys)?
.with_leds(&leds)?
.with_miscs(&miscs)?
.build()?;
Ok(keyboard)
}
fn map_key(key: &enigo::Key) -> ResultType<evdev::Key> {
if let Some(k) = KEY_MAP.get(&key) {
log::trace!("mapkey {:?}, get {:?}", &key, &k);
return Ok(k.clone());
} else {
match key {
enigo::Key::Layout(c) => {
if let Some(k) = KEY_MAP_LAYOUT.get(&c) {
log::trace!("mapkey {:?}, get {:?}", &key, k);
return Ok(k.clone());
}
}
// enigo::Key::Raw(c) => {
// let k = evdev::Key::new(c);
// if !format!("{:?}", &k).contains("unknown key") {
// return Ok(k.clone());
// }
// }
_ => {}
}
}
bail!("Failed to map key {:?}", &key);
}
async fn ipc_send_data(stream: &mut Connection, data: &Data) {
allow_err!(stream.send(data).await);
}
async fn handle_keyboard(
stream: &mut Connection,
keyboard: &mut VirtualDevice,
data: &DataKeyboard,
) {
log::trace!("handle_keyboard {:?}", &data);
match data {
DataKeyboard::Sequence(_seq) => {
// ignore
}
DataKeyboard::KeyDown(key) => {
if let Ok(k) = map_key(key) {
let down_event = InputEvent::new(EventType::KEY, k.code(), 1);
allow_err!(keyboard.emit(&[down_event]));
}
}
DataKeyboard::KeyUp(key) => {
if let Ok(k) = map_key(key) {
let up_event = InputEvent::new(EventType::KEY, k.code(), 0);
allow_err!(keyboard.emit(&[up_event]));
}
}
DataKeyboard::KeyClick(key) => {
if let Ok(k) = map_key(key) {
let down_event = InputEvent::new(EventType::KEY, k.code(), 1);
let up_event = InputEvent::new(EventType::KEY, k.code(), 0);
allow_err!(keyboard.emit(&[down_event, up_event]));
}
}
DataKeyboard::GetKeyState(key) => {
let key_state = if enigo::Key::CapsLock == *key {
match keyboard.get_led_state() {
Ok(leds) => leds.contains(evdev::LedType::LED_CAPSL),
Err(_e) => {
// log::debug!("Failed to get led state {}", &_e);
false
}
}
} else {
match keyboard.get_key_state() {
Ok(keys) => match key {
enigo::Key::Shift => {
keys.contains(evdev::Key::KEY_LEFTSHIFT)
|| keys.contains(evdev::Key::KEY_RIGHTSHIFT)
}
enigo::Key::Control => {
keys.contains(evdev::Key::KEY_LEFTCTRL)
|| keys.contains(evdev::Key::KEY_RIGHTCTRL)
}
enigo::Key::Alt => {
keys.contains(evdev::Key::KEY_LEFTALT)
|| keys.contains(evdev::Key::KEY_RIGHTALT)
}
enigo::Key::NumLock => keys.contains(evdev::Key::KEY_NUMLOCK),
enigo::Key::Meta => {
keys.contains(evdev::Key::KEY_LEFTMETA)
|| keys.contains(evdev::Key::KEY_RIGHTMETA)
}
_ => false,
},
Err(_e) => {
// log::debug!("Failed to get key state: {}", &_e);
false
}
}
};
ipc_send_data(
stream,
&Data::KeyboardResponse(ipc::DataKeyboardResponse::GetKeyState(key_state)),
)
.await;
}
}
}
fn handle_mouse(mouse: &mut mouce::nix::UInputMouseManager, data: &DataMouse) {
log::trace!("handle_mouse {:?}", &data);
match data {
DataMouse::MoveTo(x, y) => {
allow_err!(mouse.move_to(*x as _, *y as _))
}
DataMouse::MoveRelative(x, y) => {
allow_err!(mouse.move_relative(*x, *y))
}
DataMouse::Down(button) => {
let btn = match button {
enigo::MouseButton::Left => mouce::common::MouseButton::Left,
enigo::MouseButton::Middle => mouce::common::MouseButton::Middle,
enigo::MouseButton::Right => mouce::common::MouseButton::Right,
_ => {
return;
}
};
allow_err!(mouse.press_button(&btn))
}
DataMouse::Up(button) => {
let btn = match button {
enigo::MouseButton::Left => mouce::common::MouseButton::Left,
enigo::MouseButton::Middle => mouce::common::MouseButton::Middle,
enigo::MouseButton::Right => mouce::common::MouseButton::Right,
_ => {
return;
}
};
allow_err!(mouse.release_button(&btn))
}
DataMouse::Click(button) => {
let btn = match button {
enigo::MouseButton::Left => mouce::common::MouseButton::Left,
enigo::MouseButton::Middle => mouce::common::MouseButton::Middle,
enigo::MouseButton::Right => mouce::common::MouseButton::Right,
_ => {
return;
}
};
allow_err!(mouse.click_button(&btn))
}
DataMouse::ScrollX(_length) => {
// TODO: not supported for now
}
DataMouse::ScrollY(length) => {
let mut length = *length;
let scroll = if length < 0 {
mouce::common::ScrollDirection::Up
} else {
mouce::common::ScrollDirection::Down
};
if length < 0 {
length = -length;
}
for _ in 0..length {
allow_err!(mouse.scroll_wheel(&scroll))
}
}
}
}
fn spawn_keyboard_handler(mut stream: Connection) {
tokio::spawn(async move {
let mut keyboard = match create_uinput_keyboard() {
Ok(keyboard) => keyboard,
Err(e) => {
log::error!("Failed to create keyboard {}", e);
return;
}
};
loop {
tokio::select! {
res = stream.next() => {
match res {
Err(err) => {
log::info!("UInput keyboard ipc connection closed: {}", err);
break;
}
Ok(Some(data)) => {
match data {
Data::Keyboard(data) => {
handle_keyboard(&mut stream, &mut keyboard, &data).await;
}
_ => {
}
}
}
_ => {}
}
}
}
}
});
}
fn spawn_mouse_handler(mut stream: ipc::Connection) {
let resolution = RESOLUTION.lock().unwrap();
if resolution.0 .0 == resolution.0 .1 || resolution.1 .0 == resolution.1 .1 {
return;
}
let rng_x = resolution.0.clone();
let rng_y = resolution.1.clone();
tokio::spawn(async move {
log::info!(
"Create uinput mouce with rng_x: ({}, {}), rng_y: ({}, {})",
rng_x.0,
rng_x.1,
rng_y.0,
rng_y.1
);
let mut mouse = match mouce::Mouse::new_uinput(rng_x, rng_y) {
Ok(mouse) => mouse,
Err(e) => {
log::error!("Failed to create mouse, {}", e);
return;
}
};
loop {
tokio::select! {
res = stream.next() => {
match res {
Err(err) => {
log::info!("UInput mouse ipc connection closed: {}", err);
break;
}
Ok(Some(data)) => {
match data {
Data::Mouse(data) => {
handle_mouse(&mut mouse, &data);
}
_ => {
}
}
}
_ => {}
}
}
}
}
});
}
fn spawn_controller_handler(mut stream: ipc::Connection) {
tokio::spawn(async move {
loop {
tokio::select! {
res = stream.next() => {
match res {
Err(_err) => {
// log::info!("UInput controller ipc connection closed: {}", err);
break;
}
Ok(Some(data)) => {
match data {
Data::Control(data) => match data {
ipc::DataControl::Resolution{
minx,
maxx,
miny,
maxy,
} => {
*RESOLUTION.lock().unwrap() = ((minx, maxx), (miny, maxy));
allow_err!(stream.send(&Data::Empty).await);
}
}
_ => {
}
}
}
_ => {}
}
}
}
}
});
}
/// Start uinput service.
async fn start_service<F: FnOnce(ipc::Connection) + Copy>(postfix: &str, handler: F) {
match new_listener(postfix).await {
Ok(mut incoming) => {
while let Some(result) = incoming.next().await {
match result {
Ok(stream) => {
log::debug!("Got new connection of uinput ipc {}", postfix);
handler(Connection::new(stream));
}
Err(err) => {
log::error!("Couldn't get uinput mouse client: {:?}", err);
}
}
}
}
Err(err) => {
log::error!("Failed to start uinput mouse ipc service: {}", err);
}
}
}
/// Start uinput keyboard service.
#[tokio::main(flavor = "current_thread")]
pub async fn start_service_keyboard() {
log::info!("start uinput keyboard service");
start_service(IPC_POSTFIX_KEYBOARD, spawn_keyboard_handler).await;
}
/// Start uinput mouse service.
#[tokio::main(flavor = "current_thread")]
pub async fn start_service_mouse() {
log::info!("start uinput mouse service");
start_service(IPC_POSTFIX_MOUSE, spawn_mouse_handler).await;
}
/// Start uinput mouse service.
#[tokio::main(flavor = "current_thread")]
pub async fn start_service_control() {
log::info!("start uinput control service");
start_service(IPC_POSTFIX_CONTROL, spawn_controller_handler).await;
}
pub fn stop_service_keyboard() {
log::info!("stop uinput keyboard service");
}
pub fn stop_service_mouse() {
log::info!("stop uinput mouse service");
}
pub fn stop_service_control() {
log::info!("stop uinput control service");
}
}