rename {Capture,Emulation}Event to %Request

.github/workflows/pre-release.yml

@@ -55,9 +55,7 @@ jobs:
         # choco install msys2
         # choco install visualstudio2022-workload-vctools
         # choco install pkgconfiglite
-        py -m venv .venv
+        pipx install gvsbuild
-        .venv\Scripts\activate.ps1
-        py -m pip install gvsbuild
         # see https://github.com/wingtk/gvsbuild/pull/1004
         Move-Item "C:\Program Files\Git\usr\bin" "C:\Program Files\Git\usr\notbin"
         Move-Item "C:\Program Files\Git\bin" "C:\Program Files\Git\notbin"

.github/workflows/rust.yml

@@ -66,9 +66,7 @@ jobs:
         # choco install msys2
         # choco install visualstudio2022-workload-vctools
         # choco install pkgconfiglite
-        py -m venv .venv
+        pipx install gvsbuild
-        .venv\Scripts\activate.ps1
-        py -m pip install gvsbuild
         # see https://github.com/wingtk/gvsbuild/pull/1004
         Move-Item "C:\Program Files\Git\usr\bin" "C:\Program Files\Git\usr\notbin"
         Move-Item "C:\Program Files\Git\bin" "C:\Program Files\Git\notbin"

.github/workflows/tagged-release.yml

@@ -51,9 +51,7 @@ jobs:
         # choco install msys2
         # choco install visualstudio2022-workload-vctools
         # choco install pkgconfiglite
-        py -m venv .venv
+        pipx install gvsbuild
-        .venv\Scripts\activate.ps1
-        py -m pip install gvsbuild
         # see https://github.com/wingtk/gvsbuild/pull/1004
         Move-Item "C:\Program Files\Git\usr\bin" "C:\Program Files\Git\usr\notbin"
         Move-Item "C:\Program Files\Git\bin" "C:\Program Files\Git\notbin"

Cargo.lock

@@ -1196,15 +1196,10 @@ version = "0.2.0"
 dependencies = [
  "ashpd",
  "async-trait",
- "bitflags 2.6.0",
- "core-foundation",
- "core-foundation-sys",
  "core-graphics",
  "futures",
  "futures-core",
  "input-event",
- "keycode",
- "libc",
  "log",
  "memmap",
  "once_cell",
@@ -1226,7 +1221,6 @@ version = "0.2.1"
 dependencies = [
  "ashpd",
  "async-trait",
- "bitflags 2.6.0",
  "core-graphics",
  "futures",
  "input-event",
@@ -1314,19 +1308,21 @@ dependencies = [
 name = "lan-mouse"
 version = "0.9.1"
 dependencies = [
+ "anyhow",
+ "async-channel",
  "clap",
+ "endi",
  "env_logger",
  "futures",
+ "glib-build-tools",
+ "gtk4",
  "hickory-resolver",
+ "hostname 0.4.0",
  "input-capture",
  "input-emulation",
  "input-event",
- "lan-mouse-cli",
+ "libadwaita",
- "lan-mouse-gtk",
- "lan-mouse-ipc",
- "lan-mouse-proto",
  "libc",
- "local-channel",
  "log",
  "serde",
  "serde_json",
@@ -1337,51 +1333,6 @@ dependencies = [
  "toml",
 ]
 
-[[package]]
-name = "lan-mouse-cli"
-version = "0.1.0"
-dependencies = [
- "futures",
- "lan-mouse-ipc",
- "tokio",
-]
-
-[[package]]
-name = "lan-mouse-gtk"
-version = "0.1.0"
-dependencies = [
- "async-channel",
- "glib-build-tools",
- "gtk4",
- "hostname 0.4.0",
- "lan-mouse-ipc",
- "libadwaita",
- "log",
-]
-
-[[package]]
-name = "lan-mouse-ipc"
-version = "0.1.0"
-dependencies = [
- "futures",
- "log",
- "serde",
- "serde_json",
- "thiserror",
- "tokio",
- "tokio-stream",
-]
-
-[[package]]
-name = "lan-mouse-proto"
-version = "0.1.0"
-dependencies = [
- "input-event",
- "num_enum",
- "paste",
- "thiserror",
-]
-
 [[package]]
 name = "libadwaita"
 version = "0.7.0"
@@ -1441,23 +1392,6 @@ version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"
 
-[[package]]
-name = "local-channel"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6cbc85e69b8df4b8bb8b89ec634e7189099cea8927a276b7384ce5488e53ec8"
-dependencies = [
- "futures-core",
- "futures-sink",
- "local-waker",
-]
-
-[[package]]
-name = "local-waker"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d873d7c67ce09b42110d801813efbc9364414e356be9935700d368351657487"
-
 [[package]]
 name = "lock_api"
 version = "0.4.12"
@@ -1662,12 +1596,6 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
-[[package]]
-name = "paste"
-version = "1.0.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
-
 [[package]]
 name = "percent-encoding"
 version = "2.3.1"
@@ -2122,17 +2050,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "tokio-stream"
-version = "0.1.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "267ac89e0bec6e691e5813911606935d77c476ff49024f98abcea3e7b15e37af"
-dependencies = [
- "futures-core",
- "pin-project-lite",
- "tokio",
-]
-
 [[package]]
 name = "tokio-util"
 version = "0.7.11"

Cargo.toml

@@ -1,13 +1,5 @@
 [workspace]
-members = [
+members = ["input-capture", "input-emulation", "input-event"]
-    "input-capture",
-    "input-emulation",
-    "input-event",
-    "lan-mouse-ipc",
-    "lan-mouse-cli",
-    "lan-mouse-gtk",
-    "lan-mouse-proto",
-]
 
 [package]
 name = "lan-mouse"
@@ -25,14 +17,11 @@ lto = "fat"
 input-event = { path = "input-event", version = "0.2.1" }
 input-emulation = { path = "input-emulation", version = "0.2.1", default-features = false }
 input-capture = { path = "input-capture", version = "0.2.0", default-features = false }
-lan-mouse-cli = { path = "lan-mouse-cli", version = "0.1.0" }
-lan-mouse-gtk = { path = "lan-mouse-gtk", version = "0.1.0", optional = true }
-lan-mouse-ipc = { path = "lan-mouse-ipc", version = "0.1.0" }
-lan-mouse-proto = { path = "lan-mouse-proto", version = "0.1.0" }
 
 hickory-resolver = "0.24.1"
 toml = "0.8"
 serde = { version = "1.0", features = ["derive"] }
+anyhow = "1.0.71"
 log = "0.4.20"
 env_logger = "0.11.3"
 serde_json = "1.0.107"
@@ -48,18 +37,29 @@ tokio = { version = "1.32.0", features = [
 ] }
 futures = "0.3.28"
 clap = { version = "4.4.11", features = ["derive"] }
+gtk = { package = "gtk4", version = "0.9.0", features = [
+    "v4_2",
+], optional = true }
+adw = { package = "libadwaita", version = "0.7.0", features = [
+    "v1_1",
+], optional = true }
+async-channel = { version = "2.1.1", optional = true }
+hostname = "0.4.0"
 slab = "0.4.9"
+endi = "1.1.0"
 thiserror = "1.0.61"
 tokio-util = "0.7.11"
-local-channel = "0.1.5"
 
 [target.'cfg(unix)'.dependencies]
 libc = "0.2.148"
 
+[build-dependencies]
+glib-build-tools = { version = "0.20.0", optional = true }
+
 [features]
 default = ["wayland", "x11", "xdg_desktop_portal", "libei", "gtk"]
 wayland = ["input-capture/wayland", "input-emulation/wayland"]
 x11 = ["input-capture/x11", "input-emulation/x11"]
 xdg_desktop_portal = ["input-emulation/xdg_desktop_portal"]
 libei = ["input-event/libei", "input-capture/libei", "input-emulation/libei"]
-gtk = ["dep:lan-mouse-gtk"]
+gtk = ["dep:gtk", "dep:adw", "dep:async-channel", "dep:glib-build-tools"]

README.md

@@ -20,7 +20,7 @@ Focus lies on performance and a clean, manageable implementation that can easily
 
 ***blazingly fast™*** because it's written in rust.
 
-For an alternative (with slightly different goals) you may check out [Synergy 1 Community Edition](https://github.com/symless/synergy) or [Input Leap](https://github.com/input-leap) (Synergy fork).
+For an alternative (with slightly different goals) you may check out [Input Leap](https://github.com/input-leap).
 
 
 > [!WARNING]
@@ -94,13 +94,6 @@ paru -S lan-mouse-bin
 - nixpkgs: [search.nixos.org](https://search.nixos.org/packages?channel=unstable&show=lan-mouse&from=0&size=50&sort=relevance&type=packages&query=lan-mouse)
 - flake: [README.md](./nix/README.md)
 
-### Building from source with Nix
-In the root of the project to build Lan Mouse, run
-```sh
-nix-build
-```
-
-You can find the executable in `result/bin/lan-mouse` .
 
 ### Manual Installation
 
@@ -123,7 +116,7 @@ sudo cp target/release/lan-mouse /usr/local/bin/
 
 # install app icon
 sudo mkdir -p /usr/local/share/icons/hicolor/scalable/apps
-sudo cp lan-mouse-gtk/resources/de.feschber.LanMouse.svg /usr/local/share/icons/hicolor/scalable/apps
+sudo cp resources/de.feschber.LanMouse.svg /usr/local/share/icons/hicolor/scalable/apps
 
 # update icon cache
 gtk-update-icon-cache /usr/local/share/icons/hicolor/

build.rs

@@ -1,15 +1,9 @@
-use std::process::Command;
-
 fn main() {
-    // commit hash
+    // composite_templates
-    let git_describe = Command::new("git")
+    #[cfg(feature = "gtk")]
-        .arg("describe")
+    glib_build_tools::compile_resources(
-        .arg("--always")
+        &["resources"],
-        .arg("--dirty")
+        "resources/resources.gresource.xml",
-        .arg("--tags")
+        "lan-mouse.gresource",
-        .output()
+    );
-        .unwrap();
-
-    let git_describe = String::from_utf8(git_describe.stdout).unwrap();
-    println!("cargo::rustc-env=GIT_DESCRIBE={git_describe}");
 }

default.nix

@@ -1,3 +0,0 @@
-{ pkgs ? import <nixpkgs> { }
-}:
-pkgs.callPackage nix/default.nix { }

flake.lock

@@ -1,12 +1,30 @@
 {
   "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1705309234,
+        "narHash": "sha256-uNRRNRKmJyCRC/8y1RqBkqWBLM034y4qN7EprSdmgyA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "1ef2e671c3b0c19053962c07dbda38332dcebf26",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1728018373,
+        "lastModified": 1716293225,
-        "narHash": "sha256-NOiTvBbRLIOe5F6RbHaAh6++BNjsb149fGZd1T4+KBg=",
+        "narHash": "sha256-pU9ViBVE3XYb70xZx+jK6SEVphvt7xMTbm6yDIF4xPs=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "bc947f541ae55e999ffdb4013441347d83b00feb",
+        "rev": "3eaeaeb6b1e08a016380c279f8846e0bd8808916",
         "type": "github"
       },
       "original": {
@@ -24,16 +42,17 @@
     },
     "rust-overlay": {
       "inputs": {
+        "flake-utils": "flake-utils",
         "nixpkgs": [
           "nixpkgs"
         ]
       },
       "locked": {
-        "lastModified": 1728181869,
+        "lastModified": 1716257780,
-        "narHash": "sha256-sQXHXsjIcGEoIHkB+RO6BZdrPfB+43V1TEpyoWRI3ww=",
+        "narHash": "sha256-R+NjvJzKEkTVCmdrKRfPE4liX/KMGVqGUwwS5H8ET8A=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "cd46aa3906c14790ef5cbe278d9e54f2c38f95c0",
+        "rev": "4e5e3d2c5c9b2721bd266f9e43c14e96811b89d2",
         "type": "github"
       },
       "original": {
@@ -41,6 +60,21 @@
         "repo": "rust-overlay",
         "type": "github"
       }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -53,11 +53,9 @@
           libadwaita
           librsvg
           xorg.libXtst
-        ] ++ lib.optionals stdenv.isDarwin
+        ] ++ lib.optionals stdenv.isDarwin [
-        (with darwin.apple_sdk_11_0.frameworks; [
+          darwin.apple_sdk_11_0.frameworks.CoreGraphics
-          CoreGraphics
+        ];
-          ApplicationServices
-        ]);
 
         RUST_SRC_PATH = "${rust}/lib/rustlib/src/rust/library";
       };

input-capture/Cargo.toml

@@ -47,11 +47,6 @@ reis = { version = "0.2", features = ["tokio"], optional = true }
 
 [target.'cfg(target_os="macos")'.dependencies]
 core-graphics = { version = "0.23", features = ["highsierra"] }
-core-foundation = "0.9.4"
-core-foundation-sys = "0.8.6"
-libc = "0.2.155"
-keycode = "0.4.0"
-bitflags = "2.5.0"
 
 [target.'cfg(windows)'.dependencies]
 windows = { version = "0.58.0", features = [

input-capture/src/dummy.rs

@@ -1,28 +1,20 @@
-use std::f64::consts::PI;
 use std::pin::Pin;
-use std::task::{ready, Context, Poll};
+use std::task::{Context, Poll};
-use std::time::Duration;
 
 use async_trait::async_trait;
 use futures_core::Stream;
-use input_event::PointerEvent;
-use tokio::time::{self, Instant, Interval};
 
-use super::{Capture, CaptureError, CaptureEvent, Position};
+use input_event::Event;
 
-pub struct DummyInputCapture {
+use crate::CaptureError;
-    start: Option<Instant>,
+
-    interval: Interval,
+use super::{Capture, CaptureHandle, Position};
-    offset: (i32, i32),
+
-}
+pub struct DummyInputCapture {}
 
 impl DummyInputCapture {
     pub fn new() -> Self {
-        Self {
+        Self {}
-            start: None,
-            interval: time::interval(Duration::from_millis(1)),
-            offset: (0, 0),
-        }
     }
 }
 
@@ -34,11 +26,11 @@ impl Default for DummyInputCapture {
 
 #[async_trait]
 impl Capture for DummyInputCapture {
-    async fn create(&mut self, _pos: Position) -> Result<(), CaptureError> {
+    async fn create(&mut self, _handle: CaptureHandle, _pos: Position) -> Result<(), CaptureError> {
         Ok(())
     }
 
-    async fn destroy(&mut self, _pos: Position) -> Result<(), CaptureError> {
+    async fn destroy(&mut self, _handle: CaptureHandle) -> Result<(), CaptureError> {
         Ok(())
     }
 
@@ -51,36 +43,10 @@ impl Capture for DummyInputCapture {
     }
 }
 
-const FREQUENCY_HZ: f64 = 1.0;
-const RADIUS: f64 = 100.0;
-
 impl Stream for DummyInputCapture {
-    type Item = Result<(Position, CaptureEvent), CaptureError>;
+    type Item = Result<(CaptureHandle, Event), CaptureError>;
 
-    fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
+    fn poll_next(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
-        let current = ready!(self.interval.poll_tick(cx));
+        Poll::Pending
-        let event = match self.start {
-            None => {
-                self.start.replace(current);
-                CaptureEvent::Begin
-            }
-            Some(start) => {
-                let elapsed = start.elapsed();
-                let elapsed_sec_f64 = elapsed.as_secs_f64();
-                let second_fraction = elapsed_sec_f64 - elapsed_sec_f64 as u64 as f64;
-                let radians = second_fraction * 2. * PI * FREQUENCY_HZ;
-                let offset = (radians.cos() * RADIUS * 2., (radians * 2.).sin() * RADIUS);
-                let offset = (offset.0 as i32, offset.1 as i32);
-                let relative_motion = (offset.0 - self.offset.0, offset.1 - self.offset.1);
-                self.offset = offset;
-                let (dx, dy) = (relative_motion.0 as f64, relative_motion.1 as f64);
-                CaptureEvent::Input(input_event::Event::Pointer(PointerEvent::Motion {
-                    time: 0,
-                    dx,
-                    dy,
-                }))
-            }
-        };
-        Poll::Ready(Some(Ok((Position::Left, event))))
     }
 }

input-capture/src/error.rs

@@ -22,9 +22,6 @@ use ashpd::desktop::ResponseError;
 #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
 use reis::tokio::{EiConvertEventStreamError, HandshakeError};
 
-#[cfg(target_os = "macos")]
-use core_graphics::base::CGError;
-
 #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
 #[derive(Debug, Error)]
 #[error("error in libei stream: {inner:?}")]
@@ -59,21 +56,6 @@ pub enum CaptureError {
     #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
     #[error("libei disconnected - reason: `{0}`")]
     Disconnected(String),
-    #[cfg(target_os = "macos")]
-    #[error("failed to warp mouse cursor: `{0}`")]
-    WarpCursor(CGError),
-    #[cfg(target_os = "macos")]
-    #[error("reset_mouse_position called without a connected client")]
-    ResetMouseWithoutClient,
-    #[cfg(target_os = "macos")]
-    #[error("core-graphics error: {0}")]
-    CoreGraphics(CGError),
-    #[cfg(target_os = "macos")]
-    #[error("unable to map key event: {0}")]
-    KeyMapError(i64),
-    #[cfg(target_os = "macos")]
-    #[error("Event tap disabled")]
-    EventTapDisabled,
 }
 
 #[derive(Debug, Error)]
@@ -89,12 +71,12 @@ pub enum CaptureCreationError {
     #[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
     #[error("error creating x11 capture backend: `{0}`")]
     X11(#[from] X11InputCaptureCreationError),
+    #[cfg(target_os = "macos")]
+    #[error("error creating macos capture backend: `{0}`")]
+    Macos(#[from] MacOSInputCaptureCreationError),
     #[cfg(windows)]
     #[error("error creating windows capture backend")]
     Windows,
-    #[cfg(target_os = "macos")]
-    #[error("error creating macos capture backend: `{0}`")]
-    MacOS(#[from] MacosCaptureCreationError),
 }
 
 impl CaptureCreationError {
@@ -162,15 +144,7 @@ pub enum X11InputCaptureCreationError {
 
 #[cfg(target_os = "macos")]
 #[derive(Debug, Error)]
-pub enum MacosCaptureCreationError {
+pub enum MacOSInputCaptureCreationError {
-    #[error("event source creation failed!")]
+    #[error("MacOS input capture is not yet implemented :(")]
-    EventSourceCreation,
+    NotImplemented,
-    #[cfg(target_os = "macos")]
-    #[error("event tap creation failed")]
-    EventTapCreation,
-    #[error("failed to set CG Cursor property")]
-    CGCursorProperty,
-    #[cfg(target_os = "macos")]
-    #[error("failed to get display ids: {0}")]
-    ActiveDisplays(CGError),
 }

input-capture/src/lib.rs

@@ -1,9 +1,4 @@
-use std::{
+use std::{collections::HashSet, fmt::Display, task::Poll};
-    collections::{HashMap, HashSet, VecDeque},
-    fmt::Display,
-    mem::swap,
-    task::{ready, Poll},
-};
 
 use async_trait::async_trait;
 use futures::StreamExt;
@@ -35,23 +30,6 @@ mod dummy;
 
 pub type CaptureHandle = u64;
 
-#[derive(Copy, Clone, Debug, PartialEq)]
-pub enum CaptureEvent {
-    /// capture on this capture handle is now active
-    Begin,
-    /// input event coming from capture handle
-    Input(Event),
-}
-
-impl Display for CaptureEvent {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            CaptureEvent::Begin => write!(f, "begin capture"),
-            CaptureEvent::Input(e) => write!(f, "{e}"),
-        }
-    }
-}
-
 #[derive(Debug, Clone, Copy, Eq, Hash, PartialEq)]
 pub enum Position {
     Left,
@@ -117,48 +95,19 @@ impl Display for Backend {
 }
 
 pub struct InputCapture {
-    /// capture backend
     capture: Box<dyn Capture>,
-    /// keys pressed by active capture
     pressed_keys: HashSet<scancode::Linux>,
-    /// map from position to ids
-    position_map: HashMap<Position, Vec<CaptureHandle>>,
-    /// map from id to position
-    id_map: HashMap<CaptureHandle, Position>,
-    /// pending events
-    pending: VecDeque<(CaptureHandle, CaptureEvent)>,
 }
 
 impl InputCapture {
     /// create a new client with the given id
     pub async fn create(&mut self, id: CaptureHandle, pos: Position) -> Result<(), CaptureError> {
-        if let Some(v) = self.position_map.get_mut(&pos) {
+        self.capture.create(id, pos).await
-            v.push(id);
-            Ok(())
-        } else {
-            self.position_map.insert(pos, vec![id]);
-            self.id_map.insert(id, pos);
-            self.capture.create(pos).await
-        }
     }
 
     /// destroy the client with the given id, if it exists
     pub async fn destroy(&mut self, id: CaptureHandle) -> Result<(), CaptureError> {
-        if let Some(pos) = self.id_map.remove(&id) {
+        self.capture.destroy(id).await
-            let destroy = if let Some(v) = self.position_map.get_mut(&pos) {
-                v.retain(|&i| i != id);
-                // we were the last id registered at this position
-                v.is_empty()
-            } else {
-                // nothing to destroy
-                false
-            };
-            if destroy {
-                self.position_map.remove(&pos);
-                self.capture.destroy(pos).await?;
-            }
-        }
-        Ok(())
     }
 
     /// release mouse
@@ -177,9 +126,6 @@ impl InputCapture {
         let capture = create(backend).await?;
         Ok(Self {
             capture,
-            id_map: Default::default(),
-            pending: Default::default(),
-            position_map: Default::default(),
             pressed_keys: HashSet::new(),
         })
     }
@@ -201,71 +147,31 @@ impl InputCapture {
 }
 
 impl Stream for InputCapture {
-    type Item = Result<(CaptureHandle, CaptureEvent), CaptureError>;
+    type Item = Result<(CaptureHandle, Event), CaptureError>;
 
     fn poll_next(
         mut self: std::pin::Pin<&mut Self>,
         cx: &mut std::task::Context<'_>,
     ) -> Poll<Option<Self::Item>> {
-        if let Some(e) = self.pending.pop_front() {
+        match self.capture.poll_next_unpin(cx) {
-            return Poll::Ready(Some(Ok(e)));
+            Poll::Ready(e) => {
-        }
+                if let Some(Ok((_, Event::Keyboard(KeyboardEvent::Key { key, state, .. })))) = e {
-
+                    self.update_pressed_keys(key, state);
-        // ready
-        let event = ready!(self.capture.poll_next_unpin(cx));
-
-        // stream closed
-        let event = match event {
-            Some(e) => e,
-            None => return Poll::Ready(None),
-        };
-
-        // error occurred
-        let (pos, event) = match event {
-            Ok(e) => e,
-            Err(e) => return Poll::Ready(Some(Err(e))),
-        };
-
-        // handle key presses
-        if let CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Key { key, state, .. })) = event {
-            self.update_pressed_keys(key, state);
-        }
-
-        let len = self
-            .position_map
-            .get(&pos)
-            .map(|ids| ids.len())
-            .unwrap_or(0);
-
-        match len {
-            0 => Poll::Pending,
-            1 => Poll::Ready(Some(Ok((
-                self.position_map.get(&pos).expect("no id")[0],
-                event,
-            )))),
-            _ => {
-                let mut position_map = HashMap::new();
-                swap(&mut self.position_map, &mut position_map);
-                {
-                    for &id in position_map.get(&pos).expect("position") {
-                        self.pending.push_back((id, event));
-                    }
                 }
-                swap(&mut self.position_map, &mut position_map);
+                Poll::Ready(e)
-
-                Poll::Ready(Some(Ok(self.pending.pop_front().expect("event"))))
             }
+            Poll::Pending => Poll::Pending,
         }
     }
 }
 
 #[async_trait]
-trait Capture: Stream<Item = Result<(Position, CaptureEvent), CaptureError>> + Unpin {
+trait Capture: Stream<Item = Result<(CaptureHandle, Event), CaptureError>> + Unpin {
     /// create a new client with the given id
-    async fn create(&mut self, pos: Position) -> Result<(), CaptureError>;
+    async fn create(&mut self, id: CaptureHandle, pos: Position) -> Result<(), CaptureError>;
 
     /// destroy the client with the given id, if it exists
-    async fn destroy(&mut self, pos: Position) -> Result<(), CaptureError>;
+    async fn destroy(&mut self, id: CaptureHandle) -> Result<(), CaptureError>;
 
     /// release mouse
     async fn release(&mut self) -> Result<(), CaptureError>;
@@ -277,20 +183,20 @@ trait Capture: Stream<Item = Result<(Position, CaptureEvent), CaptureError>> + U
 async fn create_backend(
     backend: Backend,
 ) -> Result<
-    Box<dyn Capture<Item = Result<(Position, CaptureEvent), CaptureError>>>,
+    Box<dyn Capture<Item = Result<(CaptureHandle, Event), CaptureError>>>,
     CaptureCreationError,
 > {
     match backend {
         #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
         Backend::InputCapturePortal => Ok(Box::new(libei::LibeiInputCapture::new().await?)),
         #[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
-        Backend::LayerShell => Ok(Box::new(wayland::LayerShellInputCapture::new()?)),
+        Backend::LayerShell => Ok(Box::new(wayland::WaylandInputCapture::new()?)),
         #[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
         Backend::X11 => Ok(Box::new(x11::X11InputCapture::new()?)),
         #[cfg(windows)]
         Backend::Windows => Ok(Box::new(windows::WindowsInputCapture::new())),
         #[cfg(target_os = "macos")]
-        Backend::MacOs => Ok(Box::new(macos::MacOSInputCapture::new().await?)),
+        Backend::MacOs => Ok(Box::new(macos::MacOSInputCapture::new()?)),
         Backend::Dummy => Ok(Box::new(dummy::DummyInputCapture::new())),
     }
 }
@@ -298,7 +204,7 @@ async fn create_backend(
 async fn create(
     backend: Option<Backend>,
 ) -> Result<
-    Box<dyn Capture<Item = Result<(Position, CaptureEvent), CaptureError>>>,
+    Box<dyn Capture<Item = Result<(CaptureHandle, Event), CaptureError>>>,
     CaptureCreationError,
 > {
     if let Some(backend) = backend {

input-capture/src/libei.rs

@@ -36,11 +36,9 @@ use once_cell::sync::Lazy;
 
 use input_event::Event;
 
-use crate::CaptureEvent;
-
 use super::{
     error::{CaptureError, LibeiCaptureCreationError, ReisConvertEventStreamError},
-    Capture as LanMouseInputCapture, Position,
+    Capture as LanMouseInputCapture, CaptureHandle, Position,
 };
 
 /* there is a bug in xdg-remote-desktop-portal-gnome / mutter that
@@ -50,15 +48,15 @@ use super::{
 /// events that necessitate restarting the capture session
 #[derive(Clone, Copy, Debug)]
 enum LibeiNotifyEvent {
-    Create(Position),
+    Create(CaptureHandle, Position),
-    Destroy(Position),
+    Destroy(CaptureHandle),
 }
 
 #[allow(dead_code)]
 pub struct LibeiInputCapture<'a> {
     input_capture: Pin<Box<InputCapture<'a>>>,
     capture_task: JoinHandle<Result<(), CaptureError>>,
-    event_rx: Receiver<(Position, CaptureEvent)>,
+    event_rx: Receiver<(CaptureHandle, Event)>,
     notify_capture: Sender<LibeiNotifyEvent>,
     notify_release: Arc<Notify>,
     cancellation_token: CancellationToken,
@@ -117,13 +115,13 @@ impl From<ICBarrier> for Barrier {
 
 fn select_barriers(
     zones: &Zones,
-    clients: &[Position],
+    clients: &[(CaptureHandle, Position)],
     next_barrier_id: &mut u32,
-) -> (Vec<ICBarrier>, HashMap<BarrierID, Position>) {
+) -> (Vec<ICBarrier>, HashMap<BarrierID, CaptureHandle>) {
-    let mut pos_for_barrier = HashMap::new();
+    let mut client_for_barrier = HashMap::new();
     let mut barriers: Vec<ICBarrier> = vec![];
 
-    for pos in clients {
+    for (handle, pos) in clients {
         let mut client_barriers = zones
             .regions()
             .iter()
@@ -131,21 +129,21 @@ fn select_barriers(
                 let id = *next_barrier_id;
                 *next_barrier_id = id + 1;
                 let position = pos_to_barrier(r, *pos);
-                pos_for_barrier.insert(id, *pos);
+                client_for_barrier.insert(id, *handle);
                 ICBarrier::new(id, position)
             })
             .collect();
         barriers.append(&mut client_barriers);
     }
-    (barriers, pos_for_barrier)
+    (barriers, client_for_barrier)
 }
 
 async fn update_barriers(
     input_capture: &InputCapture<'_>,
     session: &Session<'_, InputCapture<'_>>,
-    active_clients: &[Position],
+    active_clients: &[(CaptureHandle, Position)],
     next_barrier_id: &mut u32,
-) -> Result<(Vec<ICBarrier>, HashMap<BarrierID, Position>), ashpd::Error> {
+) -> Result<(Vec<ICBarrier>, HashMap<BarrierID, CaptureHandle>), ashpd::Error> {
     let zones = input_capture.zones(session).await?.response()?;
     log::debug!("zones: {zones:?}");
 
@@ -203,9 +201,9 @@ async fn connect_to_eis(
 async fn libei_event_handler(
     mut ei_event_stream: EiConvertEventStream,
     context: ei::Context,
-    event_tx: Sender<(Position, CaptureEvent)>,
+    event_tx: Sender<(CaptureHandle, Event)>,
     release_session: Arc<Notify>,
-    current_pos: Rc<Cell<Option<Position>>>,
+    current_client: Rc<Cell<Option<CaptureHandle>>>,
 ) -> Result<(), CaptureError> {
     loop {
         let ei_event = ei_event_stream
@@ -214,7 +212,7 @@ async fn libei_event_handler(
             .ok_or(CaptureError::EndOfStream)?
             .map_err(ReisConvertEventStreamError::from)?;
         log::trace!("from ei: {ei_event:?}");
-        let client = current_pos.get();
+        let client = current_client.get();
         handle_ei_event(ei_event, client, &context, &event_tx, &release_session).await?;
     }
 }
@@ -260,14 +258,14 @@ async fn do_capture(
     mut capture_event: Receiver<LibeiNotifyEvent>,
     notify_release: Arc<Notify>,
     session: Option<(Session<'_, InputCapture<'_>>, BitFlags<Capabilities>)>,
-    event_tx: Sender<(Position, CaptureEvent)>,
+    event_tx: Sender<(CaptureHandle, Event)>,
     cancellation_token: CancellationToken,
 ) -> Result<(), CaptureError> {
     let mut session = session.map(|s| s.0);
 
     /* safety: libei_task does not outlive Self */
     let input_capture = unsafe { &*input_capture };
-    let mut active_clients: Vec<Position> = vec![];
+    let mut active_clients: Vec<(CaptureHandle, Position)> = vec![];
     let mut next_barrier_id = 1u32;
 
     let mut zones_changed = input_capture.receive_zones_changed().await?;
@@ -341,8 +339,8 @@ async fn do_capture(
         // update clients if requested
         if let Some(event) = capture_event_occured.take() {
             match event {
-                LibeiNotifyEvent::Create(p) => active_clients.push(p),
+                LibeiNotifyEvent::Create(c, p) => active_clients.push((c, p)),
-                LibeiNotifyEvent::Destroy(p) => active_clients.retain(|&pos| pos != p),
+                LibeiNotifyEvent::Destroy(c) => active_clients.retain(|(h, _)| *h != c),
             }
         }
 
@@ -356,21 +354,21 @@ async fn do_capture(
 async fn do_capture_session(
     input_capture: &InputCapture<'_>,
     session: &mut Session<'_, InputCapture<'_>>,
-    event_tx: &Sender<(Position, CaptureEvent)>,
+    event_tx: &Sender<(CaptureHandle, Event)>,
-    active_clients: &[Position],
+    active_clients: &[(CaptureHandle, Position)],
     next_barrier_id: &mut u32,
     notify_release: &Notify,
     cancel: (CancellationToken, CancellationToken),
 ) -> Result<(), CaptureError> {
     let (cancel_session, cancel_update) = cancel;
     // current client
-    let current_pos = Rc::new(Cell::new(None));
+    let current_client = Rc::new(Cell::new(None));
 
     // connect to eis server
     let (context, ei_event_stream) = connect_to_eis(input_capture, session).await?;
 
     // set barriers
-    let (barriers, pos_for_barrier_id) =
+    let (barriers, client_for_barrier_id) =
         update_barriers(input_capture, session, active_clients, next_barrier_id).await?;
 
     log::debug!("enabling session");
@@ -382,7 +380,7 @@ async fn do_capture_session(
     // async event task
     let cancel_ei_handler = CancellationToken::new();
     let event_chan = event_tx.clone();
-    let pos = current_pos.clone();
+    let client = current_client.clone();
     let cancel_session_clone = cancel_session.clone();
     let release_session_clone = release_session.clone();
     let cancel_ei_handler_clone = cancel_ei_handler.clone();
@@ -393,7 +391,7 @@ async fn do_capture_session(
                 context,
                 event_chan,
                 release_session_clone,
-                pos,
+                client,
             ) => {
                 log::debug!("libei exited: {r:?} cancelling session task");
                 cancel_session_clone.cancel();
@@ -421,11 +419,11 @@ async fn do_capture_session(
                     };
 
                     // find client corresponding to barrier
-                    let pos = *pos_for_barrier_id.get(&barrier_id).expect("invalid barrier id");
+                    let client = *client_for_barrier_id.get(&barrier_id).expect("invalid barrier id");
-                    current_pos.replace(Some(pos));
+                    current_client.replace(Some(client));
 
                     // client entered => send event
-                    event_tx.send((pos, CaptureEvent::Begin)).await.expect("no channel");
+                    event_tx.send((client, Event::Enter())).await.expect("no channel");
 
                     tokio::select! {
                         _ = notify_release.notified() => { /* capture release */
@@ -441,7 +439,7 @@ async fn do_capture_session(
                         },
                     }
 
-                    release_capture(input_capture, session, activated, pos).await?;
+                    release_capture(input_capture, session, activated, client, active_clients).await?;
 
                 }
                 _ = notify_release.notified() => { /* capture release -> we are not capturing anyway, so ignore */
@@ -484,7 +482,8 @@ async fn release_capture<'a>(
     input_capture: &InputCapture<'a>,
     session: &Session<'a, InputCapture<'a>>,
     activated: Activated,
-    current_pos: Position,
+    current_client: CaptureHandle,
+    active_clients: &[(CaptureHandle, Position)],
 ) -> Result<(), CaptureError> {
     if let Some(activation_id) = activated.activation_id() {
         log::debug!("releasing input capture {activation_id}");
@@ -493,7 +492,13 @@ async fn release_capture<'a>(
         .cursor_position()
         .expect("compositor did not report cursor position!");
     log::debug!("client entered @ ({x}, {y})");
-    let (dx, dy) = match current_pos {
+    let pos = active_clients
+        .iter()
+        .filter(|(c, _)| *c == current_client)
+        .map(|(_, p)| p)
+        .next()
+        .unwrap(); // FIXME
+    let (dx, dy) = match pos {
         // offset cursor position to not enter again immediately
         Position::Left => (1., 0.),
         Position::Right => (-1., 0.),
@@ -547,9 +552,9 @@ static ALL_CAPABILITIES: &[DeviceCapability] = &[
 
 async fn handle_ei_event(
     ei_event: EiEvent,
-    current_client: Option<Position>,
+    current_client: Option<CaptureHandle>,
     context: &ei::Context,
-    event_tx: &Sender<(Position, CaptureEvent)>,
+    event_tx: &Sender<(CaptureHandle, Event)>,
     release_session: &Notify,
 ) -> Result<(), CaptureError> {
     match ei_event {
@@ -568,9 +573,9 @@ async fn handle_ei_event(
             return Err(CaptureError::Disconnected(format!("{:?}", d.reason)))
         }
         _ => {
-            if let Some(pos) = current_client {
+            if let Some(handle) = current_client {
                 for event in Event::from_ei_event(ei_event) {
-                    event_tx.send((pos, CaptureEvent::Input(event))).await.expect("no channel");
+                    event_tx.send((handle, event)).await.expect("no channel");
                 }
             }
         }
@@ -580,18 +585,18 @@ async fn handle_ei_event(
 
 #[async_trait]
 impl<'a> LanMouseInputCapture for LibeiInputCapture<'a> {
-    async fn create(&mut self, pos: Position) -> Result<(), CaptureError> {
+    async fn create(&mut self, handle: CaptureHandle, pos: Position) -> Result<(), CaptureError> {
         let _ = self
             .notify_capture
-            .send(LibeiNotifyEvent::Create(pos))
+            .send(LibeiNotifyEvent::Create(handle, pos))
             .await;
         Ok(())
     }
 
-    async fn destroy(&mut self, pos: Position) -> Result<(), CaptureError> {
+    async fn destroy(&mut self, handle: CaptureHandle) -> Result<(), CaptureError> {
         let _ = self
             .notify_capture
-            .send(LibeiNotifyEvent::Destroy(pos))
+            .send(LibeiNotifyEvent::Destroy(handle))
             .await;
         Ok(())
     }
@@ -622,7 +627,7 @@ impl<'a> Drop for LibeiInputCapture<'a> {
 }
 
 impl<'a> Stream for LibeiInputCapture<'a> {
-    type Item = Result<(Position, CaptureEvent), CaptureError>;
+    type Item = Result<(CaptureHandle, Event), CaptureError>;
 
     fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
         match self.capture_task.poll_unpin(cx) {

input-capture/src/macos.rs

@@ -1,538 +1,39 @@
-use super::{error::MacosCaptureCreationError, Capture, CaptureError, CaptureEvent, Position};
+use crate::{
-use async_trait::async_trait;
+    error::MacOSInputCaptureCreationError, Capture, CaptureError, CaptureHandle, Position,
-use bitflags::bitflags;
-use core_foundation::base::{kCFAllocatorDefault, CFRelease};
-use core_foundation::date::CFTimeInterval;
-use core_foundation::number::{kCFBooleanTrue, CFBooleanRef};
-use core_foundation::runloop::{kCFRunLoopCommonModes, CFRunLoop, CFRunLoopSource};
-use core_foundation::string::{kCFStringEncodingUTF8, CFStringCreateWithCString, CFStringRef};
-use core_graphics::base::{kCGErrorSuccess, CGError};
-use core_graphics::display::{CGDisplay, CGPoint};
-use core_graphics::event::{
-    CGEvent, CGEventFlags, CGEventTap, CGEventTapLocation, CGEventTapOptions, CGEventTapPlacement,
-    CGEventTapProxy, CGEventType, EventField,
 };
-use core_graphics::event_source::{CGEventSource, CGEventSourceStateID};
+use async_trait::async_trait;
 use futures_core::Stream;
-use input_event::{Event, KeyboardEvent, PointerEvent, BTN_LEFT, BTN_MIDDLE, BTN_RIGHT};
+use input_event::Event;
-use keycode::{KeyMap, KeyMapping};
-use libc::c_void;
-use once_cell::unsync::Lazy;
-use std::collections::HashSet;
-use std::ffi::{c_char, CString};
 use std::pin::Pin;
-use std::sync::Arc;
+use std::task::{Context, Poll};
-use std::task::{ready, Context, Poll};
-use std::thread::{self};
-use tokio::sync::mpsc::{self, Receiver, Sender};
-use tokio::sync::{oneshot, Mutex};
 
-#[derive(Debug, Default)]
+pub struct MacOSInputCapture;
-struct Bounds {
-    xmin: f64,
-    xmax: f64,
-    ymin: f64,
-    ymax: f64,
-}
-
-#[derive(Debug)]
-struct InputCaptureState {
-    active_clients: Lazy<HashSet<Position>>,
-    current_pos: Option<Position>,
-    bounds: Bounds,
-}
-
-#[derive(Debug)]
-enum ProducerEvent {
-    Release,
-    Create(Position),
-    Destroy(Position),
-    Grab(Position),
-    EventTapDisabled,
-}
-
-impl InputCaptureState {
-    fn new() -> Result<Self, MacosCaptureCreationError> {
-        let mut res = Self {
-            active_clients: Lazy::new(HashSet::new),
-            current_pos: None,
-            bounds: Bounds::default(),
-        };
-        res.update_bounds()?;
-        Ok(res)
-    }
-
-    fn crossed(&mut self, event: &CGEvent) -> Option<Position> {
-        let location = event.location();
-        let relative_x = event.get_double_value_field(EventField::MOUSE_EVENT_DELTA_X);
-        let relative_y = event.get_double_value_field(EventField::MOUSE_EVENT_DELTA_Y);
-
-        for &position in self.active_clients.iter() {
-            if (position == Position::Left && (location.x + relative_x) <= self.bounds.xmin)
-                || (position == Position::Right && (location.x + relative_x) >= self.bounds.xmax)
-                || (position == Position::Top && (location.y + relative_y) <= self.bounds.ymin)
-                || (position == Position::Bottom && (location.y + relative_y) >= self.bounds.ymax)
-            {
-                log::debug!("Crossed barrier into position: {position:?}");
-                return Some(position);
-            }
-        }
-        None
-    }
-
-    // Get the max bounds of all displays
-    fn update_bounds(&mut self) -> Result<(), MacosCaptureCreationError> {
-        let active_ids =
-            CGDisplay::active_displays().map_err(MacosCaptureCreationError::ActiveDisplays)?;
-        active_ids.iter().for_each(|d| {
-            let bounds = CGDisplay::new(*d).bounds();
-            self.bounds.xmin = self.bounds.xmin.min(bounds.origin.x);
-            self.bounds.xmax = self.bounds.xmax.max(bounds.origin.x + bounds.size.width);
-            self.bounds.ymin = self.bounds.ymin.min(bounds.origin.y);
-            self.bounds.ymax = self.bounds.ymax.max(bounds.origin.y + bounds.size.height);
-        });
-
-        log::debug!("Updated displays bounds: {0:?}", self.bounds);
-        Ok(())
-    }
-
-    // We can't disable mouse movement when in a client so we need to reset the cursor position
-    // to the edge of the screen, the cursor will be hidden but we dont want it to appear in a
-    // random location when we exit the client
-    fn reset_mouse_position(&self, event: &CGEvent) -> Result<(), CaptureError> {
-        if let Some(pos) = self.current_pos {
-            let location = event.location();
-            let edge_offset = 1.0;
-
-            // After the cursor is warped no event is produced but the next event
-            // will carry the delta from the warp so only half the delta is needed to move the cursor
-            let delta_y = event.get_double_value_field(EventField::MOUSE_EVENT_DELTA_Y) / 2.0;
-            let delta_x = event.get_double_value_field(EventField::MOUSE_EVENT_DELTA_X) / 2.0;
-
-            let mut new_x = location.x + delta_x;
-            let mut new_y = location.y + delta_y;
-
-            match pos {
-                Position::Left => {
-                    new_x = self.bounds.xmin + edge_offset;
-                }
-                Position::Right => {
-                    new_x = self.bounds.xmax - edge_offset;
-                }
-                Position::Top => {
-                    new_y = self.bounds.ymin + edge_offset;
-                }
-                Position::Bottom => {
-                    new_y = self.bounds.ymax - edge_offset;
-                }
-            }
-            let new_pos = CGPoint::new(new_x, new_y);
-
-            log::trace!("Resetting cursor position to: {new_x}, {new_y}");
-
-            return CGDisplay::warp_mouse_cursor_position(new_pos)
-                .map_err(CaptureError::WarpCursor);
-        }
-
-        Err(CaptureError::ResetMouseWithoutClient)
-    }
-
-    async fn handle_producer_event(
-        &mut self,
-        producer_event: ProducerEvent,
-    ) -> Result<(), CaptureError> {
-        log::debug!("handling event: {producer_event:?}");
-        match producer_event {
-            ProducerEvent::Release => {
-                if self.current_pos.is_some() {
-                    CGDisplay::show_cursor(&CGDisplay::main())
-                        .map_err(CaptureError::CoreGraphics)?;
-                    self.current_pos = None;
-                }
-            }
-            ProducerEvent::Grab(pos) => {
-                if self.current_pos.is_none() {
-                    CGDisplay::hide_cursor(&CGDisplay::main())
-                        .map_err(CaptureError::CoreGraphics)?;
-                    self.current_pos = Some(pos);
-                }
-            }
-            ProducerEvent::Create(p) => {
-                self.active_clients.insert(p);
-            }
-            ProducerEvent::Destroy(p) => {
-                if let Some(current) = self.current_pos {
-                    if current == p {
-                        CGDisplay::show_cursor(&CGDisplay::main())
-                            .map_err(CaptureError::CoreGraphics)?;
-                        self.current_pos = None;
-                    };
-                }
-                self.active_clients.remove(&p);
-            }
-            ProducerEvent::EventTapDisabled => return Err(CaptureError::EventTapDisabled),
-        };
-        Ok(())
-    }
-}
-
-fn get_events(
-    ev_type: &CGEventType,
-    ev: &CGEvent,
-    result: &mut Vec<CaptureEvent>,
-) -> Result<(), CaptureError> {
-    fn map_pointer_event(ev: &CGEvent) -> PointerEvent {
-        PointerEvent::Motion {
-            time: 0,
-            dx: ev.get_double_value_field(EventField::MOUSE_EVENT_DELTA_X),
-            dy: ev.get_double_value_field(EventField::MOUSE_EVENT_DELTA_Y),
-        }
-    }
-
-    fn map_key(ev: &CGEvent) -> Result<u32, CaptureError> {
-        let code = ev.get_integer_value_field(EventField::KEYBOARD_EVENT_KEYCODE);
-        match KeyMap::from_key_mapping(KeyMapping::Mac(code as u16)) {
-            Ok(k) => Ok(k.evdev as u32),
-            Err(()) => Err(CaptureError::KeyMapError(code)),
-        }
-    }
-
-    match ev_type {
-        CGEventType::KeyDown => {
-            let k = map_key(ev)?;
-            result.push(CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Key {
-                time: 0,
-                key: k,
-                state: 1,
-            })));
-        }
-        CGEventType::KeyUp => {
-            let k = map_key(ev)?;
-            result.push(CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Key {
-                time: 0,
-                key: k,
-                state: 0,
-            })));
-        }
-        CGEventType::FlagsChanged => {
-            let mut mods = XMods::empty();
-            let mut mods_locked = XMods::empty();
-            let cg_flags = ev.get_flags();
-
-            if cg_flags.contains(CGEventFlags::CGEventFlagShift) {
-                mods |= XMods::ShiftMask;
-            }
-            if cg_flags.contains(CGEventFlags::CGEventFlagControl) {
-                mods |= XMods::ControlMask;
-            }
-            if cg_flags.contains(CGEventFlags::CGEventFlagAlternate) {
-                mods |= XMods::Mod1Mask;
-            }
-            if cg_flags.contains(CGEventFlags::CGEventFlagCommand) {
-                mods |= XMods::Mod4Mask;
-            }
-            if cg_flags.contains(CGEventFlags::CGEventFlagAlphaShift) {
-                mods |= XMods::LockMask;
-                mods_locked |= XMods::LockMask;
-            }
-
-            let modifier_event = KeyboardEvent::Modifiers {
-                depressed: mods.bits(),
-                latched: 0,
-                locked: mods_locked.bits(),
-                group: 0,
-            };
-
-            result.push(CaptureEvent::Input(Event::Keyboard(modifier_event)));
-        }
-        CGEventType::MouseMoved => {
-            result.push(CaptureEvent::Input(Event::Pointer(map_pointer_event(ev))))
-        }
-        CGEventType::LeftMouseDragged => {
-            result.push(CaptureEvent::Input(Event::Pointer(map_pointer_event(ev))))
-        }
-        CGEventType::RightMouseDragged => {
-            result.push(CaptureEvent::Input(Event::Pointer(map_pointer_event(ev))))
-        }
-        CGEventType::OtherMouseDragged => {
-            result.push(CaptureEvent::Input(Event::Pointer(map_pointer_event(ev))))
-        }
-        CGEventType::LeftMouseDown => {
-            result.push(CaptureEvent::Input(Event::Pointer(PointerEvent::Button {
-                time: 0,
-                button: BTN_LEFT,
-                state: 1,
-            })))
-        }
-        CGEventType::LeftMouseUp => {
-            result.push(CaptureEvent::Input(Event::Pointer(PointerEvent::Button {
-                time: 0,
-                button: BTN_LEFT,
-                state: 0,
-            })))
-        }
-        CGEventType::RightMouseDown => {
-            result.push(CaptureEvent::Input(Event::Pointer(PointerEvent::Button {
-                time: 0,
-                button: BTN_RIGHT,
-                state: 1,
-            })))
-        }
-        CGEventType::RightMouseUp => {
-            result.push(CaptureEvent::Input(Event::Pointer(PointerEvent::Button {
-                time: 0,
-                button: BTN_RIGHT,
-                state: 0,
-            })))
-        }
-        CGEventType::OtherMouseDown => {
-            result.push(CaptureEvent::Input(Event::Pointer(PointerEvent::Button {
-                time: 0,
-                button: BTN_MIDDLE,
-                state: 1,
-            })))
-        }
-        CGEventType::OtherMouseUp => {
-            result.push(CaptureEvent::Input(Event::Pointer(PointerEvent::Button {
-                time: 0,
-                button: BTN_MIDDLE,
-                state: 0,
-            })))
-        }
-        CGEventType::ScrollWheel => {
-            let v = ev.get_integer_value_field(EventField::SCROLL_WHEEL_EVENT_POINT_DELTA_AXIS_1);
-            let h = ev.get_integer_value_field(EventField::SCROLL_WHEEL_EVENT_POINT_DELTA_AXIS_2);
-            if v != 0 {
-                result.push(CaptureEvent::Input(Event::Pointer(PointerEvent::Axis {
-                    time: 0,
-                    axis: 0, // Vertical
-                    value: v as f64,
-                })));
-            }
-            if h != 0 {
-                result.push(CaptureEvent::Input(Event::Pointer(PointerEvent::Axis {
-                    time: 0,
-                    axis: 1, // Horizontal
-                    value: h as f64,
-                })));
-            }
-        }
-        _ => (),
-    }
-    Ok(())
-}
-
-fn create_event_tap<'a>(
-    client_state: Arc<Mutex<InputCaptureState>>,
-    notify_tx: Sender<ProducerEvent>,
-    event_tx: Sender<(Position, CaptureEvent)>,
-) -> Result<CGEventTap<'a>, MacosCaptureCreationError> {
-    let cg_events_of_interest: Vec<CGEventType> = vec![
-        CGEventType::LeftMouseDown,
-        CGEventType::LeftMouseUp,
-        CGEventType::RightMouseDown,
-        CGEventType::RightMouseUp,
-        CGEventType::OtherMouseDown,
-        CGEventType::OtherMouseUp,
-        CGEventType::MouseMoved,
-        CGEventType::LeftMouseDragged,
-        CGEventType::RightMouseDragged,
-        CGEventType::OtherMouseDragged,
-        CGEventType::ScrollWheel,
-        CGEventType::KeyDown,
-        CGEventType::KeyUp,
-        CGEventType::FlagsChanged,
-    ];
-
-    let event_tap_callback =
-        move |_proxy: CGEventTapProxy, event_type: CGEventType, cg_ev: &CGEvent| {
-            log::trace!("Got event from tap: {event_type:?}");
-            let mut state = client_state.blocking_lock();
-            let mut pos = None;
-            let mut res_events = vec![];
-
-            if matches!(
-                event_type,
-                CGEventType::TapDisabledByTimeout | CGEventType::TapDisabledByUserInput
-            ) {
-                log::error!("CGEventTap disabled");
-                notify_tx
-                    .blocking_send(ProducerEvent::EventTapDisabled)
-                    .unwrap_or_else(|e| {
-                        log::error!("Failed to send notification: {e}");
-                    });
-            }
-
-            // Are we in a client?
-            if let Some(current_pos) = state.current_pos {
-                pos = Some(current_pos);
-                get_events(&event_type, cg_ev, &mut res_events).unwrap_or_else(|e| {
-                    log::error!("Failed to get events: {e}");
-                });
-
-                // Keep (hidden) cursor at the edge of the screen
-                if matches!(event_type, CGEventType::MouseMoved) {
-                    state.reset_mouse_position(cg_ev).unwrap_or_else(|e| {
-                        log::error!("Failed to reset mouse position: {e}");
-                    })
-                }
-            }
-            // Did we cross a barrier?
-            else if matches!(event_type, CGEventType::MouseMoved) {
-                if let Some(new_pos) = state.crossed(cg_ev) {
-                    pos = Some(new_pos);
-                    res_events.push(CaptureEvent::Begin);
-                    notify_tx
-                        .blocking_send(ProducerEvent::Grab(new_pos))
-                        .expect("Failed to send notification");
-                }
-            }
-
-            if let Some(pos) = pos {
-                res_events.iter().for_each(|e| {
-                    event_tx
-                        .blocking_send((pos, *e))
-                        .expect("Failed to send event");
-                });
-                // Returning None should stop the event from being processed
-                // but core fundation still returns the event
-                cg_ev.set_type(CGEventType::Null);
-            }
-            Some(cg_ev.to_owned())
-        };
-
-    let tap = CGEventTap::new(
-        CGEventTapLocation::Session,
-        CGEventTapPlacement::HeadInsertEventTap,
-        CGEventTapOptions::Default,
-        cg_events_of_interest,
-        event_tap_callback,
-    )
-    .map_err(|_| MacosCaptureCreationError::EventTapCreation)?;
-
-    let tap_source: CFRunLoopSource = tap
-        .mach_port
-        .create_runloop_source(0)
-        .expect("Failed creating loop source");
-
-    unsafe {
-        CFRunLoop::get_current().add_source(&tap_source, kCFRunLoopCommonModes);
-    }
-
-    Ok(tap)
-}
-
-fn event_tap_thread(
-    client_state: Arc<Mutex<InputCaptureState>>,
-    event_tx: Sender<(Position, CaptureEvent)>,
-    notify_tx: Sender<ProducerEvent>,
-    ready: std::sync::mpsc::Sender<Result<(), MacosCaptureCreationError>>,
-    exit: oneshot::Sender<Result<(), &'static str>>,
-) {
-    let _tap = match create_event_tap(client_state, notify_tx, event_tx) {
-        Err(e) => {
-            ready.send(Err(e)).expect("channel closed");
-            return;
-        }
-        Ok(tap) => {
-            ready.send(Ok(())).expect("channel closed");
-            tap
-        }
-    };
-    CFRunLoop::run_current();
-
-    let _ = exit.send(Err("tap thread exited"));
-}
-
-pub struct MacOSInputCapture {
-    event_rx: Receiver<(Position, CaptureEvent)>,
-    notify_tx: Sender<ProducerEvent>,
-}
 
 impl MacOSInputCapture {
-    pub async fn new() -> Result<Self, MacosCaptureCreationError> {
+    pub fn new() -> std::result::Result<Self, MacOSInputCaptureCreationError> {
-        let state = Arc::new(Mutex::new(InputCaptureState::new()?));
+        Err(MacOSInputCaptureCreationError::NotImplemented)
-        let (event_tx, event_rx) = mpsc::channel(32);
+    }
-        let (notify_tx, mut notify_rx) = mpsc::channel(32);
+}
-        let (ready_tx, ready_rx) = std::sync::mpsc::channel();
-        let (tap_exit_tx, mut tap_exit_rx) = oneshot::channel();
 
-        unsafe {
+impl Stream for MacOSInputCapture {
-            configure_cf_settings()?;
+    type Item = Result<(CaptureHandle, Event), CaptureError>;
-        }
 
-        log::info!("Enabling CGEvent tap");
+    fn poll_next(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
-        let event_tap_thread_state = state.clone();
+        Poll::Pending
-        let event_tap_notify = notify_tx.clone();
-        thread::spawn(move || {
-            event_tap_thread(
-                event_tap_thread_state,
-                event_tx,
-                event_tap_notify,
-                ready_tx,
-                tap_exit_tx,
-            )
-        });
-
-        // wait for event tap creation result
-        ready_rx.recv().expect("channel closed")?;
-
-        let _tap_task: tokio::task::JoinHandle<()> = tokio::task::spawn_local(async move {
-            loop {
-                tokio::select! {
-                    producer_event = notify_rx.recv() => {
-                        let producer_event = producer_event.expect("channel closed");
-                        let mut state = state.lock().await;
-                        state.handle_producer_event(producer_event).await.unwrap_or_else(|e| {
-                            log::error!("Failed to handle producer event: {e}");
-                        })
-                    }
-
-                    res = &mut tap_exit_rx => {
-                        if let Err(e) = res.expect("channel closed") {
-                            log::error!("Tap thread failed: {:?}", e);
-                            break;
-                        }
-                    }
-                }
-            }
-        });
-
-        Ok(Self {
-            event_rx,
-            notify_tx,
-        })
     }
 }
 
 #[async_trait]
 impl Capture for MacOSInputCapture {
-    async fn create(&mut self, pos: Position) -> Result<(), CaptureError> {
+    async fn create(&mut self, _id: CaptureHandle, _pos: Position) -> Result<(), CaptureError> {
-        let notify_tx = self.notify_tx.clone();
-        tokio::task::spawn_local(async move {
-            log::debug!("creating capture, {pos}");
-            let _ = notify_tx.send(ProducerEvent::Create(pos)).await;
-            log::debug!("done !");
-        });
         Ok(())
     }
 
-    async fn destroy(&mut self, pos: Position) -> Result<(), CaptureError> {
+    async fn destroy(&mut self, _id: CaptureHandle) -> Result<(), CaptureError> {
-        let notify_tx = self.notify_tx.clone();
-        tokio::task::spawn_local(async move {
-            log::debug!("destroying capture {pos}");
-            let _ = notify_tx.send(ProducerEvent::Destroy(pos)).await;
-            log::debug!("done !");
-        });
         Ok(())
     }
 
     async fn release(&mut self) -> Result<(), CaptureError> {
-        let notify_tx = self.notify_tx.clone();
-        tokio::task::spawn_local(async move {
-            log::debug!("notifying Release");
-            let _ = notify_tx.send(ProducerEvent::Release).await;
-        });
         Ok(())
     }
 
@@ -540,79 +41,3 @@ impl Capture for MacOSInputCapture {
         Ok(())
     }
 }
-
-impl Stream for MacOSInputCapture {
-    type Item = Result<(Position, CaptureEvent), CaptureError>;
-
-    fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
-        match ready!(self.event_rx.poll_recv(cx)) {
-            None => Poll::Ready(None),
-            Some(e) => Poll::Ready(Some(Ok(e))),
-        }
-    }
-}
-
-type CGSConnectionID = u32;
-
-#[link(name = "ApplicationServices", kind = "framework")]
-extern "C" {
-    fn CGSSetConnectionProperty(
-        cid: CGSConnectionID,
-        targetCID: CGSConnectionID,
-        key: CFStringRef,
-        value: CFBooleanRef,
-    ) -> CGError;
-    fn _CGSDefaultConnection() -> CGSConnectionID;
-}
-
-extern "C" {
-    fn CGEventSourceSetLocalEventsSuppressionInterval(
-        event_source: CGEventSource,
-        seconds: CFTimeInterval,
-    );
-}
-
-unsafe fn configure_cf_settings() -> Result<(), MacosCaptureCreationError> {
-    // When we warp the cursor using CGWarpMouseCursorPosition local events are suppressed for a short time
-    // this leeds to the cursor not flowing when crossing back from a clinet, set this to to 0 stops the warp
-    // from working, set a low value by trial and error, 0.05s seems good. 0.25s is the default
-    let event_source = CGEventSource::new(CGEventSourceStateID::CombinedSessionState)
-        .map_err(|_| MacosCaptureCreationError::EventSourceCreation)?;
-    CGEventSourceSetLocalEventsSuppressionInterval(event_source, 0.05);
-
-    // This is a private settings that allows the cursor to be hidden while in the background.
-    // It is used by Barrier and other apps.
-    let key = CString::new("SetsCursorInBackground").unwrap();
-    let cf_key = CFStringCreateWithCString(
-        kCFAllocatorDefault,
-        key.as_ptr() as *const c_char,
-        kCFStringEncodingUTF8,
-    );
-    if CGSSetConnectionProperty(
-        _CGSDefaultConnection(),
-        _CGSDefaultConnection(),
-        cf_key,
-        kCFBooleanTrue,
-    ) != kCGErrorSuccess
-    {
-        return Err(MacosCaptureCreationError::CGCursorProperty);
-    }
-    CFRelease(cf_key as *const c_void);
-    Ok(())
-}
-
-// From X11/X.h
-bitflags! {
-    #[repr(C)]
-    #[derive(Clone, Copy, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd)]
-    struct XMods: u32 {
-        const ShiftMask = (1<<0);
-        const LockMask = (1<<1);
-        const ControlMask = (1<<2);
-        const Mod1Mask = (1<<3);
-        const Mod2Mask = (1<<4);
-        const Mod3Mask = (1<<5);
-        const Mod4Mask = (1<<6);
-        const Mod5Mask = (1<<7);
-    }
-}

input-capture/src/wayland.rs

@@ -60,18 +60,18 @@ use wayland_client::{
 
 use input_event::{Event, KeyboardEvent, PointerEvent};
 
-use crate::{CaptureError, CaptureEvent};
+use crate::CaptureError;
 
 use super::{
     error::{LayerShellCaptureCreationError, WaylandBindError},
-    Capture, Position,
+    Capture, CaptureHandle, Position,
 };
 
 struct Globals {
     compositor: wl_compositor::WlCompositor,
     pointer_constraints: ZwpPointerConstraintsV1,
     relative_pointer_manager: ZwpRelativePointerManagerV1,
-    shortcut_inhibit_manager: Option<ZwpKeyboardShortcutsInhibitManagerV1>,
+    shortcut_inhibit_manager: ZwpKeyboardShortcutsInhibitManagerV1,
     seat: wl_seat::WlSeat,
     shm: wl_shm::WlShm,
     layer_shell: ZwlrLayerShellV1,
@@ -102,13 +102,13 @@ struct State {
     pointer_lock: Option<ZwpLockedPointerV1>,
     rel_pointer: Option<ZwpRelativePointerV1>,
     shortcut_inhibitor: Option<ZwpKeyboardShortcutsInhibitorV1>,
-    active_windows: Vec<Arc<Window>>,
+    client_for_window: Vec<(Arc<Window>, CaptureHandle)>,
-    focused: Option<Arc<Window>>,
+    focused: Option<(Arc<Window>, CaptureHandle)>,
     g: Globals,
     wayland_fd: RawFd,
     read_guard: Option<ReadEventsGuard>,
     qh: QueueHandle<Self>,
-    pending_events: VecDeque<(Position, CaptureEvent)>,
+    pending_events: VecDeque<(CaptureHandle, Event)>,
     output_info: Vec<(WlOutput, OutputInfo)>,
     scroll_discrete_pending: bool,
 }
@@ -124,7 +124,7 @@ impl AsRawFd for Inner {
     }
 }
 
-pub struct LayerShellInputCapture(AsyncFd<Inner>);
+pub struct WaylandInputCapture(AsyncFd<Inner>);
 
 struct Window {
     buffer: wl_buffer::WlBuffer,
@@ -256,7 +256,7 @@ fn draw(f: &mut File, (width, height): (u32, u32)) {
     }
 }
 
-impl LayerShellInputCapture {
+impl WaylandInputCapture {
     pub fn new() -> std::result::Result<Self, LayerShellCaptureCreationError> {
         let conn = Connection::connect_to_env()?;
         let (g, mut queue) = registry_queue_init::<State>(&conn)?;
@@ -285,18 +285,9 @@ impl LayerShellInputCapture {
         let relative_pointer_manager: ZwpRelativePointerManagerV1 = g
             .bind(&qh, 1..=1, ())
             .map_err(|e| WaylandBindError::new(e, "zwp_relative_pointer_manager_v1"))?;
-        let shortcut_inhibit_manager: Result<
+        let shortcut_inhibit_manager: ZwpKeyboardShortcutsInhibitManagerV1 = g
-            ZwpKeyboardShortcutsInhibitManagerV1,
-            WaylandBindError,
-        > = g
             .bind(&qh, 1..=1, ())
-            .map_err(|e| WaylandBindError::new(e, "zwp_keyboard_shortcuts_inhibit_manager_v1"));
+            .map_err(|e| WaylandBindError::new(e, "zwp_keyboard_shortcuts_inhibit_manager_v1"))?;
-        // layer-shell backend still works without this protocol so we make it an optional dependency
-        if let Err(e) = &shortcut_inhibit_manager {
-            log::warn!("shortcut_inhibit_manager not supported: {e}\nkeybinds handled by the compositor will not be passed
-                to the client");
-        }
-        let shortcut_inhibit_manager = shortcut_inhibit_manager.ok();
         let outputs = vec![];
 
         let g = Globals {
@@ -323,7 +314,7 @@ impl LayerShellInputCapture {
             pointer_lock: None,
             rel_pointer: None,
             shortcut_inhibitor: None,
-            active_windows: Vec::new(),
+            client_for_window: Vec::new(),
             focused: None,
             qh,
             wayland_fd,
@@ -370,18 +361,23 @@ impl LayerShellInputCapture {
 
         let inner = AsyncFd::new(Inner { queue, state })?;
 
-        Ok(LayerShellInputCapture(inner))
+        Ok(WaylandInputCapture(inner))
     }
 
-    fn add_client(&mut self, pos: Position) {
+    fn add_client(&mut self, handle: CaptureHandle, pos: Position) {
-        self.0.get_mut().state.add_client(pos);
+        self.0.get_mut().state.add_client(handle, pos);
     }
 
-    fn delete_client(&mut self, pos: Position) {
+    fn delete_client(&mut self, handle: CaptureHandle) {
         let inner = self.0.get_mut();
         // remove all windows corresponding to this client
-        while let Some(i) = inner.state.active_windows.iter().position(|w| w.pos == pos) {
+        while let Some(i) = inner
-            inner.state.active_windows.remove(i);
+            .state
+            .client_for_window
+            .iter()
+            .position(|(_, c)| *c == handle)
+        {
+            inner.state.client_for_window.remove(i);
             inner.state.focused = None;
         }
     }
@@ -395,7 +391,7 @@ impl State {
         serial: u32,
         qh: &QueueHandle<State>,
     ) {
-        let window = self.focused.as_ref().unwrap();
+        let (window, _) = self.focused.as_ref().unwrap();
 
         // hide the cursor
         pointer.set_cursor(serial, None, 0, 0);
@@ -428,17 +424,19 @@ impl State {
         }
 
         // capture modifier keys
-        if let Some(shortcut_inhibit_manager) = &self.g.shortcut_inhibit_manager {
+        if self.shortcut_inhibitor.is_none() {
-            if self.shortcut_inhibitor.is_none() {
+            self.shortcut_inhibitor = Some(self.g.shortcut_inhibit_manager.inhibit_shortcuts(
-                self.shortcut_inhibitor =
+                surface,
-                    Some(shortcut_inhibit_manager.inhibit_shortcuts(surface, &self.g.seat, qh, ()));
+                &self.g.seat,
-            }
+                qh,
+                (),
+            ));
         }
     }
 
     fn ungrab(&mut self) {
         // get focused client
-        let window = match self.focused.as_ref() {
+        let (window, _client) = match self.focused.as_ref() {
             Some(focused) => focused,
             None => return,
         };
@@ -468,23 +466,27 @@ impl State {
         }
     }
 
-    fn add_client(&mut self, pos: Position) {
+    fn add_client(&mut self, client: CaptureHandle, pos: Position) {
         let outputs = get_output_configuration(self, pos);
 
         log::debug!("outputs: {outputs:?}");
         outputs.iter().for_each(|(o, i)| {
             let window = Window::new(self, &self.qh, o, pos, i.size);
             let window = Arc::new(window);
-            self.active_windows.push(window);
+            self.client_for_window.push((window, client));
         });
     }
 
     fn update_windows(&mut self) {
         log::debug!("updating windows");
         log::debug!("output info: {:?}", self.output_info);
-        let clients: Vec<_> = self.active_windows.drain(..).map(|w| w.pos).collect();
+        let clients: Vec<_> = self
-        for pos in clients {
+            .client_for_window
-            self.add_client(pos);
+            .drain(..)
+            .map(|(w, c)| (c, w.pos))
+            .collect();
+        for (client, pos) in clients {
+            self.add_client(client, pos);
         }
     }
 }
@@ -557,15 +559,15 @@ impl Inner {
 }
 
 #[async_trait]
-impl Capture for LayerShellInputCapture {
+impl Capture for WaylandInputCapture {
-    async fn create(&mut self, pos: Position) -> Result<(), CaptureError> {
+    async fn create(&mut self, handle: CaptureHandle, pos: Position) -> Result<(), CaptureError> {
-        self.add_client(pos);
+        self.add_client(handle, pos);
         let inner = self.0.get_mut();
         Ok(inner.flush_events()?)
     }
 
-    async fn destroy(&mut self, pos: Position) -> Result<(), CaptureError> {
+    async fn destroy(&mut self, handle: CaptureHandle) -> Result<(), CaptureError> {
-        self.delete_client(pos);
+        self.delete_client(handle);
         let inner = self.0.get_mut();
         Ok(inner.flush_events()?)
     }
@@ -582,8 +584,8 @@ impl Capture for LayerShellInputCapture {
     }
 }
 
-impl Stream for LayerShellInputCapture {
+impl Stream for WaylandInputCapture {
-    type Item = Result<(Position, CaptureEvent), CaptureError>;
+    type Item = Result<(CaptureHandle, Event), CaptureError>;
 
     fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
         if let Some(event) = self.0.get_mut().state.pending_events.pop_front() {
@@ -648,16 +650,10 @@ impl Dispatch<wl_seat::WlSeat, ()> for State {
             capabilities: WEnum::Value(capabilities),
         } = event
         {
-            if capabilities.contains(wl_seat::Capability::Pointer) {
+            if capabilities.contains(wl_seat::Capability::Pointer) && state.pointer.is_none() {
-                if let Some(p) = state.pointer.take() {
-                    p.release();
-                }
                 state.pointer.replace(seat.get_pointer(qh, ()));
             }
-            if capabilities.contains(wl_seat::Capability::Keyboard) {
+            if capabilities.contains(wl_seat::Capability::Keyboard) && state.keyboard.is_none() {
-                if let Some(k) = state.keyboard.take() {
-                    k.release();
-                }
                 seat.get_keyboard(qh, ());
             }
         }
@@ -682,20 +678,23 @@ impl Dispatch<WlPointer, ()> for State {
             } => {
                 // get client corresponding to the focused surface
                 {
-                    if let Some(window) = app.active_windows.iter().find(|w| w.surface == surface) {
+                    if let Some((window, client)) = app
-                        app.focused = Some(window.clone());
+                        .client_for_window
+                        .iter()
+                        .find(|(w, _c)| w.surface == surface)
+                    {
+                        app.focused = Some((window.clone(), *client));
                         app.grab(&surface, pointer, serial, qh);
                     } else {
                         return;
                     }
                 }
-                let pos = app
+                let (_, client) = app
-                    .active_windows
+                    .client_for_window
                     .iter()
-                    .find(|w| w.surface == surface)
+                    .find(|(w, _c)| w.surface == surface)
-                    .map(|w| w.pos)
                     .unwrap();
-                app.pending_events.push_back((pos, CaptureEvent::Begin));
+                app.pending_events.push_back((*client, Event::Enter()));
             }
             wl_pointer::Event::Leave { .. } => {
                 /* There are rare cases, where when a window is opened in
@@ -716,18 +715,18 @@ impl Dispatch<WlPointer, ()> for State {
                 button,
                 state,
             } => {
-                let window = app.focused.as_ref().unwrap();
+                let (_, client) = app.focused.as_ref().unwrap();
                 app.pending_events.push_back((
-                    window.pos,
+                    *client,
-                    CaptureEvent::Input(Event::Pointer(PointerEvent::Button {
+                    Event::Pointer(PointerEvent::Button {
                         time,
                         button,
                         state: u32::from(state),
-                    })),
+                    }),
                 ));
             }
             wl_pointer::Event::Axis { time, axis, value } => {
-                let window = app.focused.as_ref().unwrap();
+                let (_, client) = app.focused.as_ref().unwrap();
                 if app.scroll_discrete_pending {
                     // each axisvalue120 event is coupled with
                     // a corresponding axis event, which needs to
@@ -735,24 +734,24 @@ impl Dispatch<WlPointer, ()> for State {
                     app.scroll_discrete_pending = false;
                 } else {
                     app.pending_events.push_back((
-                        window.pos,
+                        *client,
-                        CaptureEvent::Input(Event::Pointer(PointerEvent::Axis {
+                        Event::Pointer(PointerEvent::Axis {
                             time,
                             axis: u32::from(axis) as u8,
                             value,
-                        })),
+                        }),
                     ));
                 }
             }
             wl_pointer::Event::AxisValue120 { axis, value120 } => {
-                let window = app.focused.as_ref().unwrap();
+                let (_, client) = app.focused.as_ref().unwrap();
                 app.scroll_discrete_pending = true;
                 app.pending_events.push_back((
-                    window.pos,
+                    *client,
-                    CaptureEvent::Input(Event::Pointer(PointerEvent::AxisDiscrete120 {
+                    Event::Pointer(PointerEvent::AxisDiscrete120 {
                         axis: u32::from(axis) as u8,
                         value: value120,
-                    })),
+                    }),
                 ));
             }
             wl_pointer::Event::Frame {} => {
@@ -774,7 +773,10 @@ impl Dispatch<WlKeyboard, ()> for State {
         _: &Connection,
         _: &QueueHandle<Self>,
     ) {
-        let window = &app.focused;
+        let (_window, client) = match &app.focused {
+            Some(focused) => (Some(&focused.0), Some(&focused.1)),
+            None => (None, None),
+        };
         match event {
             wl_keyboard::Event::Key {
                 serial: _,
@@ -782,14 +784,14 @@ impl Dispatch<WlKeyboard, ()> for State {
                 key,
                 state,
             } => {
-                if let Some(window) = window {
+                if let Some(client) = client {
                     app.pending_events.push_back((
-                        window.pos,
+                        *client,
-                        CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Key {
+                        Event::Keyboard(KeyboardEvent::Key {
                             time,
                             key,
                             state: u32::from(state) as u8,
-                        })),
+                        }),
                     ));
                 }
             }
@@ -800,15 +802,15 @@ impl Dispatch<WlKeyboard, ()> for State {
                 mods_locked,
                 group,
             } => {
-                if let Some(window) = window {
+                if let Some(client) = client {
                     app.pending_events.push_back((
-                        window.pos,
+                        *client,
-                        CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Modifiers {
+                        Event::Keyboard(KeyboardEvent::Modifiers {
-                            depressed: mods_depressed,
+                            mods_depressed,
-                            latched: mods_latched,
+                            mods_latched,
-                            locked: mods_locked,
+                            mods_locked,
                             group,
-                        })),
+                        }),
                     ));
                 }
             }
@@ -834,11 +836,11 @@ impl Dispatch<ZwpRelativePointerV1, ()> for State {
             ..
         } = event
         {
-            if let Some(window) = &app.focused {
+            if let Some((_window, client)) = &app.focused {
                 let time = (((utime_hi as u64) << 32 | utime_lo as u64) / 1000) as u32;
                 app.pending_events.push_back((
-                    window.pos,
+                    *client,
-                    CaptureEvent::Input(Event::Pointer(PointerEvent::Motion { time, dx, dy })),
+                    Event::Pointer(PointerEvent::Motion { time, dx, dy }),
                 ));
             }
         }
@@ -855,10 +857,10 @@ impl Dispatch<ZwlrLayerSurfaceV1, ()> for State {
         _: &QueueHandle<Self>,
     ) {
         if let zwlr_layer_surface_v1::Event::Configure { serial, .. } = event {
-            if let Some(window) = app
+            if let Some((window, _client)) = app
-                .active_windows
+                .client_for_window
                 .iter()
-                .find(|w| &w.layer_surface == layer_surface)
+                .find(|(w, _c)| &w.layer_surface == layer_surface)
             {
                 // client corresponding to the layer_surface
                 let surface = &window.surface;

input-capture/src/windows.rs

@@ -3,12 +3,12 @@ use core::task::{Context, Poll};
 use futures::Stream;
 use once_cell::unsync::Lazy;
 
-use std::collections::HashSet;
+use std::collections::HashMap;
 use std::ptr::{addr_of, addr_of_mut};
 
 use futures::executor::block_on;
 use std::default::Default;
-use std::sync::atomic::{AtomicBool, AtomicU32, Ordering};
+use std::sync::atomic::{AtomicU32, Ordering};
 use std::sync::{mpsc, Mutex};
 use std::task::ready;
 use std::{pin::Pin, thread};
@@ -37,15 +37,15 @@ use input_event::{
     Event, KeyboardEvent, PointerEvent, BTN_BACK, BTN_FORWARD, BTN_LEFT, BTN_MIDDLE, BTN_RIGHT,
 };
 
-use super::{Capture, CaptureError, CaptureEvent, Position};
+use super::{Capture, CaptureError, CaptureHandle, Position};
 
 enum Request {
-    Create(Position),
+    Create(CaptureHandle, Position),
-    Destroy(Position),
+    Destroy(CaptureHandle),
 }
 
 pub struct WindowsInputCapture {
-    event_rx: Receiver<(Position, CaptureEvent)>,
+    event_rx: Receiver<(CaptureHandle, Event)>,
     msg_thread: Option<std::thread::JoinHandle<()>>,
 }
 
@@ -65,22 +65,22 @@ unsafe fn signal_message_thread(event_type: EventType) {
 
 #[async_trait]
 impl Capture for WindowsInputCapture {
-    async fn create(&mut self, pos: Position) -> Result<(), CaptureError> {
+    async fn create(&mut self, handle: CaptureHandle, pos: Position) -> Result<(), CaptureError> {
         unsafe {
             {
                 let mut requests = REQUEST_BUFFER.lock().unwrap();
-                requests.push(Request::Create(pos));
+                requests.push(Request::Create(handle, pos));
             }
             signal_message_thread(EventType::Request);
         }
         Ok(())
     }
 
-    async fn destroy(&mut self, pos: Position) -> Result<(), CaptureError> {
+    async fn destroy(&mut self, handle: CaptureHandle) -> Result<(), CaptureError> {
         unsafe {
             {
                 let mut requests = REQUEST_BUFFER.lock().unwrap();
-                requests.push(Request::Destroy(pos));
+                requests.push(Request::Destroy(handle));
             }
             signal_message_thread(EventType::Request);
         }
@@ -98,9 +98,9 @@ impl Capture for WindowsInputCapture {
 }
 
 static mut REQUEST_BUFFER: Mutex<Vec<Request>> = Mutex::new(Vec::new());
-static mut ACTIVE_CLIENT: Option<Position> = None;
+static mut ACTIVE_CLIENT: Option<CaptureHandle> = None;
-static mut CLIENTS: Lazy<HashSet<Position>> = Lazy::new(HashSet::new);
+static mut CLIENT_FOR_POS: Lazy<HashMap<Position, CaptureHandle>> = Lazy::new(HashMap::new);
-static mut EVENT_TX: Option<Sender<(Position, CaptureEvent)>> = None;
+static mut EVENT_TX: Option<Sender<(CaptureHandle, Event)>> = None;
 static mut EVENT_THREAD_ID: AtomicU32 = AtomicU32::new(0);
 unsafe fn set_event_tid(tid: u32) {
     EVENT_THREAD_ID.store(tid, Ordering::SeqCst);
@@ -249,7 +249,7 @@ fn clamp_to_display_bounds(prev_point: (i32, i32), point: (i32, i32)) -> (i32, i
     (x.clamp(min_x, max_x), y.clamp(min_y, max_y))
 }
 
-unsafe fn send_blocking(event: CaptureEvent) {
+unsafe fn send_blocking(event: Event) {
     if let Some(active) = ACTIVE_CLIENT {
         block_on(async move {
             let _ = EVENT_TX.as_ref().unwrap().send((active, event)).await;
@@ -281,17 +281,17 @@ unsafe fn check_client_activation(wparam: WPARAM, lparam: LPARAM) -> bool {
     };
 
     /* check if a client is registered for the barrier */
-    if !CLIENTS.contains(&pos) {
+    let Some(client) = CLIENT_FOR_POS.get(&pos) else {
         return ret;
-    }
+    };
 
     /* update active client and entry point */
-    ACTIVE_CLIENT.replace(pos);
+    ACTIVE_CLIENT.replace(*client);
     ENTRY_POINT = clamp_to_display_bounds(prev_pos, curr_pos);
 
     /* notify main thread */
     log::debug!("ENTERED @ {prev_pos:?} -> {curr_pos:?}");
-    send_blocking(CaptureEvent::Begin);
+    send_blocking(Event::Enter());
 
     ret
 }
@@ -305,7 +305,7 @@ unsafe extern "system" fn mouse_proc(ncode: i32, wparam: WPARAM, lparam: LPARAM)
     }
 
     /* get active client if any */
-    let Some(pos) = ACTIVE_CLIENT else {
+    let Some(client) = ACTIVE_CLIENT else {
         return LRESULT(1);
     };
 
@@ -313,7 +313,7 @@ unsafe extern "system" fn mouse_proc(ncode: i32, wparam: WPARAM, lparam: LPARAM)
     let Some(pointer_event) = to_mouse_event(wparam, lparam) else {
         return LRESULT(1);
     };
-    let event = (pos, CaptureEvent::Input(Event::Pointer(pointer_event)));
+    let event = (client, Event::Pointer(pointer_event));
 
     /* notify mainthread (drop events if sending too fast) */
     if let Err(e) = EVENT_TX.as_ref().unwrap().try_send(event) {
@@ -334,7 +334,7 @@ unsafe extern "system" fn kybrd_proc(ncode: i32, wparam: WPARAM, lparam: LPARAM)
     let Some(key_event) = to_key_event(wparam, lparam) else {
         return LRESULT(1);
     };
-    let event = (client, CaptureEvent::Input(Event::Keyboard(key_event)));
+    let event = (client, Event::Keyboard(key_event));
 
     if let Err(e) = EVENT_TX.as_ref().unwrap().try_send(event) {
         log::warn!("e: {e}");
@@ -493,8 +493,6 @@ fn get_msg() -> Option<MSG> {
     }
 }
 
-static WINDOW_CLASS_REGISTERED: AtomicBool = AtomicBool::new(false);
-
 fn message_thread(ready_tx: mpsc::Sender<()>) {
     unsafe {
         set_event_tid(GetCurrentThreadId());
@@ -515,15 +513,9 @@ fn message_thread(ready_tx: mpsc::Sender<()>) {
             ..Default::default()
         };
 
-        if WINDOW_CLASS_REGISTERED
+        let ret = RegisterClassW(&window_class);
-            .compare_exchange(false, true, Ordering::SeqCst, Ordering::SeqCst)
+        if ret == 0 {
-            .is_ok()
+            panic!("RegisterClassW");
-        {
-            /* register window class if not yet done so */
-            let ret = RegisterClassW(&window_class);
-            if ret == 0 {
-                panic!("RegisterClassW");
-            }
         }
 
         /* window is used ro receive WM_DISPLAYCHANGE messages */
@@ -583,16 +575,23 @@ fn message_thread(ready_tx: mpsc::Sender<()>) {
 
 fn update_clients(request: Request) {
     match request {
-        Request::Create(pos) => {
+        Request::Create(handle, pos) => {
-            unsafe { CLIENTS.insert(pos) };
+            unsafe { CLIENT_FOR_POS.insert(pos, handle) };
         }
-        Request::Destroy(pos) => unsafe {
+        Request::Destroy(handle) => unsafe {
-            if let Some(active_pos) = ACTIVE_CLIENT {
+            for pos in [
-                if pos == active_pos {
+                Position::Left,
-                    let _ = ACTIVE_CLIENT.take();
+                Position::Right,
+                Position::Top,
+                Position::Bottom,
+            ] {
+                if ACTIVE_CLIENT == Some(handle) {
+                    ACTIVE_CLIENT.take();
+                }
+                if CLIENT_FOR_POS.get(&pos).copied() == Some(handle) {
+                    CLIENT_FOR_POS.remove(&pos);
                 }
             }
-            CLIENTS.remove(&pos);
         },
     }
 }
@@ -615,7 +614,7 @@ impl WindowsInputCapture {
 }
 
 impl Stream for WindowsInputCapture {
-    type Item = Result<(Position, CaptureEvent), CaptureError>;
+    type Item = Result<(CaptureHandle, Event), CaptureError>;
     fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
         match ready!(self.event_rx.poll_recv(cx)) {
             None => Poll::Ready(None),

input-capture/src/x11.rs

@@ -3,7 +3,13 @@ use std::task::Poll;
 use async_trait::async_trait;
 use futures_core::Stream;
 
-use super::{error::X11InputCaptureCreationError, Capture, CaptureError, CaptureEvent, Position};
+use crate::CaptureError;
+
+use super::Capture;
+use input_event::Event;
+
+use super::error::X11InputCaptureCreationError;
+use super::{CaptureHandle, Position};
 
 pub struct X11InputCapture {}
 
@@ -15,11 +21,11 @@ impl X11InputCapture {
 
 #[async_trait]
 impl Capture for X11InputCapture {
-    async fn create(&mut self, _pos: Position) -> Result<(), CaptureError> {
+    async fn create(&mut self, _id: CaptureHandle, _pos: Position) -> Result<(), CaptureError> {
         Ok(())
     }
 
-    async fn destroy(&mut self, _pos: Position) -> Result<(), CaptureError> {
+    async fn destroy(&mut self, _id: CaptureHandle) -> Result<(), CaptureError> {
         Ok(())
     }
 
@@ -33,7 +39,7 @@ impl Capture for X11InputCapture {
 }
 
 impl Stream for X11InputCapture {
-    type Item = Result<(Position, CaptureEvent), CaptureError>;
+    type Item = Result<(CaptureHandle, Event), CaptureError>;
 
     fn poll_next(
         self: std::pin::Pin<&mut Self>,

input-emulation/Cargo.toml

@@ -44,7 +44,6 @@ ashpd = { version = "0.9", default-features = false, features = [
 reis = { version = "0.2", features = ["tokio"], optional = true }
 
 [target.'cfg(target_os="macos")'.dependencies]
-bitflags = "2.5.0"
 core-graphics = { version = "0.23", features = ["highsierra"] }
 keycode = "0.4.0"
 

input-emulation/src/lib.rs

@@ -195,9 +195,9 @@ impl InputEmulation {
         }
 
         let event = Event::Keyboard(KeyboardEvent::Modifiers {
-            depressed: 0,
+            mods_depressed: 0,
-            latched: 0,
+            mods_latched: 0,
-            locked: 0,
+            mods_locked: 0,
             group: 0,
         });
         self.emulation.consume(event, handle).await?;

input-emulation/src/libei.rs

@@ -213,6 +213,7 @@ impl<'a> Emulation for LibeiEmulation<'a> {
                         d.frame(self.serial.load(Ordering::SeqCst), now);
                     }
                 }
+                PointerEvent::Frame {} => {}
             },
             Event::Keyboard(k) => match k {
                 KeyboardEvent::Key {
@@ -234,6 +235,7 @@ impl<'a> Emulation for LibeiEmulation<'a> {
                 }
                 KeyboardEvent::Modifiers { .. } => {}
             },
+            _ => {}
         }
         self.context
             .flush()

input-emulation/src/macos.rs

@@ -1,23 +1,15 @@
 use super::{error::EmulationError, Emulation, EmulationHandle};
 use async_trait::async_trait;
-use bitflags::bitflags;
+use core_graphics::display::{CGDisplayBounds, CGMainDisplayID, CGPoint};
-use core_graphics::base::CGFloat;
-use core_graphics::display::{
-    CGDirectDisplayID, CGDisplayBounds, CGGetDisplaysWithRect, CGPoint, CGRect, CGSize,
-};
 use core_graphics::event::{
-    CGEvent, CGEventFlags, CGEventTapLocation, CGEventType, CGKeyCode, CGMouseButton, EventField,
+    CGEvent, CGEventTapLocation, CGEventType, CGKeyCode, CGMouseButton, EventField, ScrollEventUnit,
-    ScrollEventUnit,
 };
 use core_graphics::event_source::{CGEventSource, CGEventSourceStateID};
-use input_event::{scancode, Event, KeyboardEvent, PointerEvent};
+use input_event::{Event, KeyboardEvent, PointerEvent};
 use keycode::{KeyMap, KeyMapping};
-use std::cell::Cell;
 use std::ops::{Index, IndexMut};
-use std::rc::Rc;
-use std::sync::Arc;
 use std::time::Duration;
-use tokio::{sync::Notify, task::JoinHandle};
+use tokio::task::AbortHandle;
 
 use super::error::MacOSEmulationCreationError;
 
@@ -26,10 +18,8 @@ const DEFAULT_REPEAT_INTERVAL: Duration = Duration::from_millis(32);
 
 pub(crate) struct MacOSEmulation {
     event_source: CGEventSource,
-    repeat_task: Option<JoinHandle<()>>,
+    repeat_task: Option<AbortHandle>,
     button_state: ButtonState,
-    modifier_state: Rc<Cell<XMods>>,
-    notify_repeat_task: Arc<Notify>,
 }
 
 struct ButtonState {
@@ -75,8 +65,6 @@ impl MacOSEmulation {
             event_source,
             button_state,
             repeat_task: None,
-            notify_repeat_task: Arc::new(Notify::new()),
-            modifier_state: Rc::new(Cell::new(XMods::empty())),
         })
     }
 
@@ -88,40 +76,25 @@ impl MacOSEmulation {
     async fn spawn_repeat_task(&mut self, key: u16) {
         // there can only be one repeating key and it's
         // always the last to be pressed
-        self.cancel_repeat_task().await;
+        self.kill_repeat_task();
         let event_source = self.event_source.clone();
-        let notify = self.notify_repeat_task.clone();
-        let modifiers = self.modifier_state.clone();
         let repeat_task = tokio::task::spawn_local(async move {
-            let stop = tokio::select! {
+            tokio::time::sleep(DEFAULT_REPEAT_DELAY).await;
-                _ = tokio::time::sleep(DEFAULT_REPEAT_DELAY) => false,
+            loop {
-                _ = notify.notified() => true,
+                key_event(event_source.clone(), key, 1);
-            };
+                tokio::time::sleep(DEFAULT_REPEAT_INTERVAL).await;
-            if !stop {
-                loop {
-                    key_event(event_source.clone(), key, 1, modifiers.get());
-                    tokio::select! {
-                        _ = tokio::time::sleep(DEFAULT_REPEAT_INTERVAL) => {},
-                        _ = notify.notified() => break,
-                    }
-                }
             }
-            // release key when cancelled
-            update_modifiers(&modifiers, key as u32, 0);
-            key_event(event_source.clone(), key, 0, modifiers.get());
         });
-        self.repeat_task = Some(repeat_task);
+        self.repeat_task = Some(repeat_task.abort_handle());
     }
-
+    fn kill_repeat_task(&mut self) {
-    async fn cancel_repeat_task(&mut self) {
         if let Some(task) = self.repeat_task.take() {
-            self.notify_repeat_task.notify_waiters();
+            task.abort();
-            let _ = task.await;
         }
     }
 }
 
-fn key_event(event_source: CGEventSource, key: u16, state: u8, modifiers: XMods) {
+fn key_event(event_source: CGEventSource, key: u16, state: u8) {
     let event = match CGEvent::new_keyboard_event(event_source, key, state != 0) {
         Ok(e) => e,
         Err(_) => {
@@ -129,92 +102,7 @@ fn key_event(event_source: CGEventSource, key: u16, state: u8, modifiers: XMods)
             return;
         }
     };
-    event.set_flags(to_cgevent_flags(modifiers));
     event.post(CGEventTapLocation::HID);
-    log::trace!("key event: {key} {state}");
-}
-
-fn modifier_event(event_source: CGEventSource, depressed: XMods) {
-    let Ok(event) = CGEvent::new(event_source) else {
-        log::warn!("could not create CGEvent");
-        return;
-    };
-    let flags = to_cgevent_flags(depressed);
-    event.set_type(CGEventType::FlagsChanged);
-    event.set_flags(flags);
-    event.post(CGEventTapLocation::HID);
-    log::trace!("modifiers updated: {depressed:?}");
-}
-
-fn get_display_at_point(x: CGFloat, y: CGFloat) -> Option<CGDirectDisplayID> {
-    let mut displays: [CGDirectDisplayID; 16] = [0; 16];
-    let mut display_count: u32 = 0;
-    let rect = CGRect::new(&CGPoint::new(x, y), &CGSize::new(0.0, 0.0));
-
-    let error = unsafe {
-        CGGetDisplaysWithRect(
-            rect,
-            1,
-            displays.as_mut_ptr(),
-            &mut display_count as *mut u32,
-        )
-    };
-
-    if error != 0 {
-        log::warn!("error getting displays at point ({}, {}): {}", x, y, error);
-        return Option::None;
-    }
-
-    if display_count == 0 {
-        log::debug!("no displays found at point ({}, {})", x, y);
-        return Option::None;
-    }
-
-    return displays.first().copied();
-}
-
-fn get_display_bounds(display: CGDirectDisplayID) -> (CGFloat, CGFloat, CGFloat, CGFloat) {
-    unsafe {
-        let bounds = CGDisplayBounds(display);
-        let min_x = bounds.origin.x;
-        let max_x = bounds.origin.x + bounds.size.width;
-        let min_y = bounds.origin.y;
-        let max_y = bounds.origin.y + bounds.size.height;
-        (min_x as f64, min_y as f64, max_x as f64, max_y as f64)
-    }
-}
-
-fn clamp_to_screen_space(
-    current_x: CGFloat,
-    current_y: CGFloat,
-    dx: CGFloat,
-    dy: CGFloat,
-) -> (CGFloat, CGFloat) {
-    // Check which display the mouse is currently on
-    // Determine what the location of the mouse would be after applying the move
-    // Get the display at the new location
-    // If the point is not on a display
-    //   Clamp the mouse to the current display
-    // Else If the point is on a display
-    //   Clamp the mouse to the new display
-    let current_display = match get_display_at_point(current_x, current_y) {
-        Some(display) => display,
-        None => {
-            log::warn!("could not get current display!");
-            return (current_x, current_y);
-        }
-    };
-
-    let new_x = current_x + dx;
-    let new_y = current_y + dy;
-
-    let final_display = get_display_at_point(new_x, new_y).unwrap_or(current_display);
-    let (min_x, min_y, max_x, max_y) = get_display_bounds(final_display);
-
-    (
-        new_x.clamp(min_x, max_x - 1.),
-        new_y.clamp(min_y, max_y - 1.),
-    )
 }
 
 #[async_trait]
@@ -227,6 +115,16 @@ impl Emulation for MacOSEmulation {
         match event {
             Event::Pointer(pointer_event) => match pointer_event {
                 PointerEvent::Motion { time: _, dx, dy } => {
+                    // FIXME secondary displays?
+                    let (min_x, min_y, max_x, max_y) = unsafe {
+                        let display = CGMainDisplayID();
+                        let bounds = CGDisplayBounds(display);
+                        let min_x = bounds.origin.x;
+                        let max_x = bounds.origin.x + bounds.size.width;
+                        let min_y = bounds.origin.y;
+                        let max_y = bounds.origin.y + bounds.size.height;
+                        (min_x as f64, min_y as f64, max_x as f64, max_y as f64)
+                    };
                     let mut mouse_location = match self.get_mouse_location() {
                         Some(l) => l,
                         None => {
@@ -235,11 +133,8 @@ impl Emulation for MacOSEmulation {
                         }
                     };
 
-                    let (new_mouse_x, new_mouse_y) =
+                    mouse_location.x = (mouse_location.x + dx).clamp(min_x, max_x - 1.);
-                        clamp_to_screen_space(mouse_location.x, mouse_location.y, dx, dy);
+                    mouse_location.y = (mouse_location.y + dy).clamp(min_y, max_y - 1.);
-
-                    mouse_location.x = new_mouse_x;
-                    mouse_location.y = new_mouse_y;
 
                     let mut event_type = CGEventType::MouseMoved;
                     if self.button_state.left {
@@ -367,6 +262,7 @@ impl Emulation for MacOSEmulation {
                     };
                     event.post(CGEventTapLocation::HID);
                 }
+                PointerEvent::Frame { .. } => {}
             },
             Event::Keyboard(keyboard_event) => match keyboard_event {
                 KeyboardEvent::Key {
@@ -384,26 +280,13 @@ impl Emulation for MacOSEmulation {
                     match state {
                         // pressed
                         1 => self.spawn_repeat_task(code).await,
-                        _ => self.cancel_repeat_task().await,
+                        _ => self.kill_repeat_task(),
                     }
-                    update_modifiers(&self.modifier_state, key, state);
+                    key_event(self.event_source.clone(), code, state)
-                    key_event(
-                        self.event_source.clone(),
-                        code,
-                        state,
-                        self.modifier_state.get(),
-                    );
-                }
-                KeyboardEvent::Modifiers {
-                    depressed,
-                    latched,
-                    locked,
-                    group,
-                } => {
-                    set_modifiers(&self.modifier_state, depressed, latched, locked, group);
-                    modifier_event(self.event_source.clone(), self.modifier_state.get());
                 }
+                KeyboardEvent::Modifiers { .. } => {}
             },
+            _ => (),
         }
         // FIXME
         Ok(())
@@ -415,81 +298,3 @@ impl Emulation for MacOSEmulation {
 
     async fn terminate(&mut self) {}
 }
-
-fn update_modifiers(modifiers: &Cell<XMods>, key: u32, state: u8) -> bool {
-    if let Ok(key) = scancode::Linux::try_from(key) {
-        let mask = match key {
-            scancode::Linux::KeyLeftShift | scancode::Linux::KeyRightShift => XMods::ShiftMask,
-            scancode::Linux::KeyCapsLock => XMods::LockMask,
-            scancode::Linux::KeyLeftCtrl | scancode::Linux::KeyRightCtrl => XMods::ControlMask,
-            scancode::Linux::KeyLeftAlt | scancode::Linux::KeyRightalt => XMods::Mod1Mask,
-            scancode::Linux::KeyLeftMeta | scancode::Linux::KeyRightmeta => XMods::Mod4Mask,
-            _ => XMods::empty(),
-        };
-        // unchanged
-        if mask.is_empty() {
-            return false;
-        }
-        let mut mods = modifiers.get();
-        match state {
-            1 => mods.insert(mask),
-            _ => mods.remove(mask),
-        }
-        modifiers.set(mods);
-        true
-    } else {
-        false
-    }
-}
-
-fn set_modifiers(
-    active_modifiers: &Cell<XMods>,
-    depressed: u32,
-    latched: u32,
-    locked: u32,
-    group: u32,
-) {
-    let depressed = XMods::from_bits(depressed).unwrap_or_default();
-    let _latched = XMods::from_bits(latched).unwrap_or_default();
-    let _locked = XMods::from_bits(locked).unwrap_or_default();
-    let _group = XMods::from_bits(group).unwrap_or_default();
-
-    // we only care about the depressed modifiers for now
-    active_modifiers.replace(depressed);
-}
-
-fn to_cgevent_flags(depressed: XMods) -> CGEventFlags {
-    let mut flags = CGEventFlags::empty();
-    if depressed.contains(XMods::ShiftMask) {
-        flags |= CGEventFlags::CGEventFlagShift;
-    }
-    if depressed.contains(XMods::LockMask) {
-        flags |= CGEventFlags::CGEventFlagAlphaShift;
-    }
-    if depressed.contains(XMods::ControlMask) {
-        flags |= CGEventFlags::CGEventFlagControl;
-    }
-    if depressed.contains(XMods::Mod1Mask) {
-        flags |= CGEventFlags::CGEventFlagAlternate;
-    }
-    if depressed.contains(XMods::Mod4Mask) {
-        flags |= CGEventFlags::CGEventFlagCommand;
-    }
-    flags
-}
-
-// From X11/X.h
-bitflags! {
-    #[repr(C)]
-    #[derive(Clone, Copy, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd)]
-    struct XMods: u32 {
-        const ShiftMask = (1<<0);
-        const LockMask = (1<<1);
-        const ControlMask = (1<<2);
-        const Mod1Mask = (1<<3);
-        const Mod2Mask = (1<<4);
-        const Mod3Mask = (1<<5);
-        const Mod4Mask = (1<<6);
-        const Mod5Mask = (1<<7);
-    }
-}

input-emulation/src/windows.rs

@@ -53,6 +53,7 @@ impl Emulation for WindowsEmulation {
                     value,
                 } => scroll(axis, value as i32),
                 PointerEvent::AxisDiscrete120 { axis, value } => scroll(axis, value),
+                PointerEvent::Frame {} => {}
             },
             Event::Keyboard(keyboard_event) => match keyboard_event {
                 KeyboardEvent::Key {
@@ -70,6 +71,7 @@ impl Emulation for WindowsEmulation {
                 }
                 KeyboardEvent::Modifiers { .. } => {}
             },
+            _ => {}
         }
         // FIXME
         Ok(())

input-emulation/src/wlroots.rs

@@ -200,6 +200,7 @@ impl VirtualInput {
                             .axis_discrete(0, axis, value as f64 / 6., value / 120);
                         self.pointer.frame();
                     }
+                    PointerEvent::Frame {} => self.pointer.frame(),
                 }
                 self.pointer.frame();
             }
@@ -208,15 +209,16 @@ impl VirtualInput {
                     self.keyboard.key(time, key, state as u32);
                 }
                 KeyboardEvent::Modifiers {
-                    depressed: mods_depressed,
+                    mods_depressed,
-                    latched: mods_latched,
+                    mods_latched,
-                    locked: mods_locked,
+                    mods_locked,
                     group,
                 } => {
                     self.keyboard
                         .modifiers(mods_depressed, mods_latched, mods_locked, group);
                 }
             },
+            _ => {}
         }
         Ok(())
     }

input-emulation/src/x11.rs

@@ -123,6 +123,7 @@ impl Emulation for X11Emulation {
                 PointerEvent::AxisDiscrete120 { axis, value } => {
                     self.emulate_scroll(axis, value as f64);
                 }
+                PointerEvent::Frame {} => {}
             },
             Event::Keyboard(KeyboardEvent::Key {
                 time: _,

input-emulation/src/xdg_desktop_portal.rs

@@ -108,6 +108,7 @@ impl<'a> Emulation for DesktopPortalEmulation<'a> {
                         .notify_pointer_axis(&self.session, dx, dy, true)
                         .await?;
                 }
+                PointerEvent::Frame {} => {}
             },
             Keyboard(k) => {
                 match k {
@@ -129,6 +130,7 @@ impl<'a> Emulation for DesktopPortalEmulation<'a> {
                     }
                 }
             }
+            _ => {}
         }
         Ok(())
     }

input-event/src/error.rs

@@ -1 +1,17 @@
+use std::array::TryFromSliceError;
 
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum ProtocolError {
+    #[error(transparent)]
+    MissingData(#[from] TryFromSliceError),
+    #[error("invalid event id: `{0}`")]
+    InvalidEventId(u8),
+    #[error("invalid pointer event type: `{0}`")]
+    InvalidPointerEventId(u8),
+    #[error("invalid keyboard event type: `{0}`")]
+    InvalidKeyboardEventId(u8),
+    #[error("expected data at idx `{0:?}`")]
+    Data(String),
+}

input-event/src/lib.rs

@@ -1,6 +1,8 @@
+pub use error::ProtocolError;
 use std::fmt::{self, Display};
 
 pub mod error;
+pub mod proto;
 pub mod scancode;
 
 #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
@@ -23,6 +25,8 @@ pub enum PointerEvent {
     Axis { time: u32, axis: u8, value: f64 },
     /// discrete axis event, scroll event for mice - 120 = one scroll tick
     AxisDiscrete120 { axis: u8, value: i32 },
+    /// frame event
+    Frame {},
 }
 
 #[derive(Debug, PartialEq, Clone, Copy)]
@@ -31,9 +35,9 @@ pub enum KeyboardEvent {
     Key { time: u32, key: u32, state: u8 },
     /// modifiers changed state
     Modifiers {
-        depressed: u32,
+        mods_depressed: u32,
-        latched: u32,
+        mods_latched: u32,
-        locked: u32,
+        mods_locked: u32,
         group: u32,
     },
 }
@@ -44,6 +48,23 @@ pub enum Event {
     Pointer(PointerEvent),
     /// keyboard events (key / modifiers)
     Keyboard(KeyboardEvent),
+    /// enter event: request to enter a client.
+    /// The client must release the pointer if it is grabbed
+    /// and reply with a leave event, as soon as its ready to
+    /// receive events
+    Enter(),
+    /// leave event: this client is now ready to receive events and will
+    /// not send any events after until it sends an enter event
+    Leave(),
+    /// ping a client, to see if it is still alive. A client that does
+    /// not respond with a pong event will be assumed to be offline.
+    Ping(),
+    /// response to a ping event: this event signals that a client
+    /// is still alive but must otherwise be ignored
+    Pong(),
+    /// explicit disconnect request. The client will no longer
+    /// send events until the next Enter event. All of its keys should be released.
+    Disconnect(),
 }
 
 impl Display for PointerEvent {
@@ -77,6 +98,7 @@ impl Display for PointerEvent {
             PointerEvent::AxisDiscrete120 { axis, value } => {
                 write!(f, "scroll-120 ({axis}, {value})")
             }
+            PointerEvent::Frame {} => write!(f, "frame()"),
         }
     }
 }
@@ -97,9 +119,9 @@ impl Display for KeyboardEvent {
                 }
             }
             KeyboardEvent::Modifiers {
-                depressed: mods_depressed,
+                mods_depressed,
-                latched: mods_latched,
+                mods_latched,
-                locked: mods_locked,
+                mods_locked,
                 group,
             } => write!(
                 f,
@@ -114,6 +136,11 @@ impl Display for Event {
         match self {
             Event::Pointer(p) => write!(f, "{}", p),
             Event::Keyboard(k) => write!(f, "{}", k),
+            Event::Enter() => write!(f, "enter"),
+            Event::Leave() => write!(f, "leave"),
+            Event::Ping() => write!(f, "ping"),
+            Event::Pong() => write!(f, "pong"),
+            Event::Disconnect() => write!(f, "disconnect"),
         }
     }
 }

input-event/src/libei.rs

@@ -57,9 +57,9 @@ fn to_input_events(ei_event: EiEvent) -> Events {
     match ei_event {
         EiEvent::KeyboardModifiers(mods) => {
             let modifier_event = KeyboardEvent::Modifiers {
-                depressed: mods.depressed,
+                mods_depressed: mods.depressed,
-                latched: mods.latched,
+                mods_latched: mods.latched,
-                locked: mods.locked,
+                mods_locked: mods.locked,
                 group: mods.group,
             };
             Events::One(Event::Keyboard(modifier_event))

input-event/src/proto.rs

@@ -0,0 +1,307 @@
+use std::{fmt::Debug, slice::SliceIndex};
+
+use crate::ProtocolError;
+
+use super::{Event, KeyboardEvent, PointerEvent};
+
+enum PointerEventType {
+    Motion,
+    Button,
+    Axis,
+    AxisDiscrete120,
+    Frame,
+}
+
+enum KeyboardEventType {
+    Key,
+    Modifiers,
+}
+
+enum EventType {
+    Pointer,
+    Keyboard,
+    Enter,
+    Leave,
+    Ping,
+    Pong,
+    Disconnect,
+}
+
+impl Event {
+    fn event_type(&self) -> EventType {
+        match self {
+            Self::Pointer(_) => EventType::Pointer,
+            Self::Keyboard(_) => EventType::Keyboard,
+            Self::Enter() => EventType::Enter,
+            Self::Leave() => EventType::Leave,
+            Self::Ping() => EventType::Ping,
+            Self::Pong() => EventType::Pong,
+            Self::Disconnect() => EventType::Disconnect,
+        }
+    }
+}
+
+impl PointerEvent {
+    fn event_type(&self) -> PointerEventType {
+        match self {
+            Self::Motion { .. } => PointerEventType::Motion,
+            Self::Button { .. } => PointerEventType::Button,
+            Self::Axis { .. } => PointerEventType::Axis,
+            Self::AxisDiscrete120 { .. } => PointerEventType::AxisDiscrete120,
+            Self::Frame { .. } => PointerEventType::Frame,
+        }
+    }
+}
+
+impl KeyboardEvent {
+    fn event_type(&self) -> KeyboardEventType {
+        match self {
+            KeyboardEvent::Key { .. } => KeyboardEventType::Key,
+            KeyboardEvent::Modifiers { .. } => KeyboardEventType::Modifiers,
+        }
+    }
+}
+
+impl TryFrom<u8> for PointerEventType {
+    type Error = ProtocolError;
+
+    fn try_from(value: u8) -> Result<Self, ProtocolError> {
+        match value {
+            x if x == Self::Motion as u8 => Ok(Self::Motion),
+            x if x == Self::Button as u8 => Ok(Self::Button),
+            x if x == Self::Axis as u8 => Ok(Self::Axis),
+            x if x == Self::AxisDiscrete120 as u8 => Ok(Self::AxisDiscrete120),
+            x if x == Self::Frame as u8 => Ok(Self::Frame),
+            _ => Err(ProtocolError::InvalidPointerEventId(value)),
+        }
+    }
+}
+
+impl TryFrom<u8> for KeyboardEventType {
+    type Error = ProtocolError;
+
+    fn try_from(value: u8) -> Result<Self, ProtocolError> {
+        match value {
+            x if x == Self::Key as u8 => Ok(Self::Key),
+            x if x == Self::Modifiers as u8 => Ok(Self::Modifiers),
+            _ => Err(ProtocolError::InvalidKeyboardEventId(value)),
+        }
+    }
+}
+
+impl From<&Event> for Vec<u8> {
+    fn from(event: &Event) -> Self {
+        let event_id = vec![event.event_type() as u8];
+        let event_data = match event {
+            Event::Pointer(p) => p.into(),
+            Event::Keyboard(k) => k.into(),
+            Event::Enter() => vec![],
+            Event::Leave() => vec![],
+            Event::Ping() => vec![],
+            Event::Pong() => vec![],
+            Event::Disconnect() => vec![],
+        };
+        [event_id, event_data].concat()
+    }
+}
+
+impl TryFrom<Vec<u8>> for Event {
+    type Error = ProtocolError;
+
+    fn try_from(value: Vec<u8>) -> Result<Self, ProtocolError> {
+        let event_id = u8::from_be_bytes(value[..1].try_into()?);
+        match event_id {
+            i if i == (EventType::Pointer as u8) => Ok(Event::Pointer(value.try_into()?)),
+            i if i == (EventType::Keyboard as u8) => Ok(Event::Keyboard(value.try_into()?)),
+            i if i == (EventType::Enter as u8) => Ok(Event::Enter()),
+            i if i == (EventType::Leave as u8) => Ok(Event::Leave()),
+            i if i == (EventType::Ping as u8) => Ok(Event::Ping()),
+            i if i == (EventType::Pong as u8) => Ok(Event::Pong()),
+            i if i == (EventType::Disconnect as u8) => Ok(Event::Disconnect()),
+            _ => Err(ProtocolError::InvalidEventId(event_id)),
+        }
+    }
+}
+
+impl From<&PointerEvent> for Vec<u8> {
+    fn from(event: &PointerEvent) -> Self {
+        let id = vec![event.event_type() as u8];
+        let data = match event {
+            PointerEvent::Motion { time, dx, dy } => {
+                let time = time.to_be_bytes();
+                let dx = dx.to_be_bytes();
+                let dy = dy.to_be_bytes();
+                [&time[..], &dx[..], &dy[..]].concat()
+            }
+            PointerEvent::Button {
+                time,
+                button,
+                state,
+            } => {
+                let time = time.to_be_bytes();
+                let button = button.to_be_bytes();
+                let state = state.to_be_bytes();
+                [&time[..], &button[..], &state[..]].concat()
+            }
+            PointerEvent::Axis { time, axis, value } => {
+                let time = time.to_be_bytes();
+                let axis = axis.to_be_bytes();
+                let value = value.to_be_bytes();
+                [&time[..], &axis[..], &value[..]].concat()
+            }
+            PointerEvent::AxisDiscrete120 { axis, value } => {
+                let axis = axis.to_be_bytes();
+                let value = value.to_be_bytes();
+                [&axis[..], &value[..]].concat()
+            }
+            PointerEvent::Frame {} => {
+                vec![]
+            }
+        };
+        [id, data].concat()
+    }
+}
+
+fn decode_u8<I>(data: &[u8], idx: I) -> Result<u8, ProtocolError>
+where
+    I: SliceIndex<[u8], Output = [u8]> + Debug + Clone,
+{
+    let data = data
+        .get(idx.clone())
+        .ok_or(ProtocolError::Data(format!("{:?}", idx)))?;
+    Ok(u8::from_be_bytes(data.try_into()?))
+}
+
+fn decode_u32<I>(data: &[u8], idx: I) -> Result<u32, ProtocolError>
+where
+    I: SliceIndex<[u8], Output = [u8]> + Debug + Clone,
+{
+    let data = data
+        .get(idx.clone())
+        .ok_or(ProtocolError::Data(format!("{:?}", idx)))?;
+    Ok(u32::from_be_bytes(data.try_into()?))
+}
+
+fn decode_i32<I>(data: &[u8], idx: I) -> Result<i32, ProtocolError>
+where
+    I: SliceIndex<[u8], Output = [u8]> + Debug + Clone,
+{
+    let data = data
+        .get(idx.clone())
+        .ok_or(ProtocolError::Data(format!("{:?}", idx)))?;
+    Ok(i32::from_be_bytes(data.try_into()?))
+}
+fn decode_f64<I>(data: &[u8], idx: I) -> Result<f64, ProtocolError>
+where
+    I: SliceIndex<[u8], Output = [u8]> + Debug + Clone,
+{
+    let data = data
+        .get(idx.clone())
+        .ok_or(ProtocolError::Data(format!("{:?}", idx)))?;
+    Ok(f64::from_be_bytes(data.try_into()?))
+}
+
+impl TryFrom<Vec<u8>> for PointerEvent {
+    type Error = ProtocolError;
+
+    fn try_from(data: Vec<u8>) -> Result<Self, ProtocolError> {
+        match data.get(1) {
+            Some(id) => match id.to_owned().try_into()? {
+                PointerEventType::Motion => {
+                    let time = decode_u32(&data, 2..6)?;
+                    let dx = decode_f64(&data, 6..14)?;
+                    let dy = decode_f64(&data, 14..22)?;
+
+                    Ok(Self::Motion { time, dx, dy })
+                }
+                PointerEventType::Button => {
+                    let time = decode_u32(&data, 2..6)?;
+                    let button = decode_u32(&data, 6..10)?;
+                    let state = decode_u32(&data, 10..14)?;
+
+                    Ok(Self::Button {
+                        time,
+                        button,
+                        state,
+                    })
+                }
+                PointerEventType::Axis => {
+                    let time = decode_u32(&data, 2..6)?;
+                    let axis = decode_u8(&data, 6..7)?;
+                    let value = decode_f64(&data, 7..15)?;
+                    Ok(Self::Axis { time, axis, value })
+                }
+                PointerEventType::AxisDiscrete120 => {
+                    let axis = decode_u8(&data, 2..3)?;
+                    let value = decode_i32(&data, 3..7)?;
+                    Ok(Self::AxisDiscrete120 { axis, value })
+                }
+                PointerEventType::Frame => Ok(Self::Frame {}),
+            },
+            None => Err(ProtocolError::Data("0".to_string())),
+        }
+    }
+}
+
+impl From<&KeyboardEvent> for Vec<u8> {
+    fn from(event: &KeyboardEvent) -> Self {
+        let id = vec![event.event_type() as u8];
+        let data = match event {
+            KeyboardEvent::Key { time, key, state } => {
+                let time = time.to_be_bytes();
+                let key = key.to_be_bytes();
+                let state = state.to_be_bytes();
+                [&time[..], &key[..], &state[..]].concat()
+            }
+            KeyboardEvent::Modifiers {
+                mods_depressed,
+                mods_latched,
+                mods_locked,
+                group,
+            } => {
+                let mods_depressed = mods_depressed.to_be_bytes();
+                let mods_latched = mods_latched.to_be_bytes();
+                let mods_locked = mods_locked.to_be_bytes();
+                let group = group.to_be_bytes();
+                [
+                    &mods_depressed[..],
+                    &mods_latched[..],
+                    &mods_locked[..],
+                    &group[..],
+                ]
+                .concat()
+            }
+        };
+        [id, data].concat()
+    }
+}
+
+impl TryFrom<Vec<u8>> for KeyboardEvent {
+    type Error = ProtocolError;
+
+    fn try_from(data: Vec<u8>) -> Result<Self, ProtocolError> {
+        match data.get(1) {
+            Some(id) => match id.to_owned().try_into()? {
+                KeyboardEventType::Key => {
+                    let time = decode_u32(&data, 2..6)?;
+                    let key = decode_u32(&data, 6..10)?;
+                    let state = decode_u8(&data, 10..11)?;
+                    Ok(KeyboardEvent::Key { time, key, state })
+                }
+                KeyboardEventType::Modifiers => {
+                    let mods_depressed = decode_u32(&data, 2..6)?;
+                    let mods_latched = decode_u32(&data, 6..10)?;
+                    let mods_locked = decode_u32(&data, 10..14)?;
+                    let group = decode_u32(&data, 14..18)?;
+                    Ok(KeyboardEvent::Modifiers {
+                        mods_depressed,
+                        mods_latched,
+                        mods_locked,
+                        group,
+                    })
+                }
+            },
+            None => Err(ProtocolError::Data("0".to_string())),
+        }
+    }
+}

lan-mouse-cli/Cargo.toml

@@ -1,18 +0,0 @@
-[package]
-name = "lan-mouse-cli"
-description = "CLI Frontend for lan-mouse"
-version = "0.1.0"
-edition = "2021"
-license = "GPL-3.0-or-later"
-repository = "https://github.com/feschber/lan-mouse"
-
-[dependencies]
-futures = "0.3.30"
-lan-mouse-ipc = { path = "../lan-mouse-ipc", version = "0.1.0" }
-tokio = { version = "1.32.0", features = [
-    "io-util",
-    "io-std",
-    "macros",
-    "net",
-    "rt",
-] }

lan-mouse-gtk/Cargo.toml

@@ -1,18 +0,0 @@
-[package]
-name = "lan-mouse-gtk"
-description = "GTK4 / Libadwaita Frontend for lan-mouse"
-version = "0.1.0"
-edition = "2021"
-license = "GPL-3.0-or-later"
-repository = "https://github.com/feschber/lan-mouse"
-
-[dependencies]
-gtk = { package = "gtk4", version = "0.9.0", features = ["v4_2"] }
-adw = { package = "libadwaita", version = "0.7.0", features = ["v1_1"] }
-async-channel = { version = "2.1.1" }
-hostname = "0.4.0"
-log = "0.4.20"
-lan-mouse-ipc = { path = "../lan-mouse-ipc", version = "0.1.0" }
-
-[build-dependencies]
-glib-build-tools = { version = "0.20.0" }

lan-mouse-gtk/build.rs

@@ -1,8 +0,0 @@
-fn main() {
-    // composite_templates
-    glib_build_tools::compile_resources(
-        &["resources"],
-        "resources/resources.gresource.xml",
-        "lan-mouse.gresource",
-    );
-}

lan-mouse-ipc/Cargo.toml

@@ -1,16 +0,0 @@
-[package]
-name = "lan-mouse-ipc"
-description = "library for communication between lan-mouse service and frontends"
-version = "0.1.0"
-edition = "2021"
-license = "GPL-3.0-or-later"
-repository = "https://github.com/feschber/lan-mouse"
-
-[dependencies]
-futures = "0.3.30"
-log = "0.4.22"
-serde = { version = "1.0", features = ["derive"] }
-serde_json = "1.0.107"
-thiserror = "1.0.63"
-tokio = { version = "1.32.0", features = ["net", "io-util", "time"] }
-tokio-stream = { version = "0.1.15", features = ["io-util"] }

lan-mouse-ipc/src/connect.rs

@@ -1,89 +0,0 @@
-use crate::{ConnectionError, FrontendEvent, FrontendRequest, IpcError};
-use std::{
-    cmp::min,
-    io::{self, prelude::*, BufReader, LineWriter, Lines},
-    thread,
-    time::Duration,
-};
-
-#[cfg(unix)]
-use std::os::unix::net::UnixStream;
-
-#[cfg(windows)]
-use std::net::TcpStream;
-
-pub struct FrontendEventReader {
-    #[cfg(unix)]
-    lines: Lines<BufReader<UnixStream>>,
-    #[cfg(windows)]
-    lines: Lines<BufReader<TcpStream>>,
-}
-
-pub struct FrontendRequestWriter {
-    #[cfg(unix)]
-    line_writer: LineWriter<UnixStream>,
-    #[cfg(windows)]
-    line_writer: LineWriter<TcpStream>,
-}
-
-impl FrontendEventReader {
-    pub fn next_event(&mut self) -> Option<Result<FrontendEvent, IpcError>> {
-        match self.lines.next()? {
-            Err(e) => Some(Err(e.into())),
-            Ok(l) => Some(serde_json::from_str(l.as_str()).map_err(|e| e.into())),
-        }
-    }
-}
-
-impl FrontendRequestWriter {
-    pub fn request(&mut self, request: FrontendRequest) -> Result<(), io::Error> {
-        let mut json = serde_json::to_string(&request).unwrap();
-        log::debug!("requesting: {json}");
-        json.push('\n');
-        self.line_writer.write_all(json.as_bytes())?;
-        Ok(())
-    }
-}
-
-pub fn connect() -> Result<(FrontendEventReader, FrontendRequestWriter), ConnectionError> {
-    let rx = wait_for_service()?;
-    let tx = rx.try_clone()?;
-    let buf_reader = BufReader::new(rx);
-    let lines = buf_reader.lines();
-    let line_writer = LineWriter::new(tx);
-    let reader = FrontendEventReader { lines };
-    let writer = FrontendRequestWriter { line_writer };
-    Ok((reader, writer))
-}
-
-/// wait for the lan-mouse socket to come online
-#[cfg(unix)]
-fn wait_for_service() -> Result<UnixStream, ConnectionError> {
-    let socket_path = crate::default_socket_path()?;
-    let mut duration = Duration::from_millis(10);
-    loop {
-        if let Ok(stream) = UnixStream::connect(&socket_path) {
-            break Ok(stream);
-        }
-        // a signaling mechanism or inotify could be used to
-        // improve this
-        thread::sleep(exponential_back_off(&mut duration));
-    }
-}
-
-#[cfg(windows)]
-fn wait_for_service() -> Result<TcpStream, ConnectionError> {
-    let mut duration = Duration::from_millis(10);
-    loop {
-        if let Ok(stream) = TcpStream::connect("127.0.0.1:5252") {
-            break Ok(stream);
-        }
-        thread::sleep(exponential_back_off(&mut duration));
-    }
-}
-
-fn exponential_back_off(duration: &mut Duration) -> Duration {
-    let new = duration.saturating_mul(2);
-    *duration = min(new, Duration::from_secs(1));
-    *duration
-}

lan-mouse-ipc/src/connect_async.rs

@@ -1,104 +0,0 @@
-use crate::{ConnectionError, FrontendEvent, FrontendRequest, IpcError};
-use std::{
-    cmp::min,
-    io,
-    task::{ready, Poll},
-    time::Duration,
-};
-
-use futures::{Stream, StreamExt};
-use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader, ReadHalf, WriteHalf};
-use tokio_stream::wrappers::LinesStream;
-
-#[cfg(unix)]
-use tokio::net::UnixStream;
-
-#[cfg(windows)]
-use tokio::net::TcpStream;
-
-pub struct AsyncFrontendEventReader {
-    #[cfg(unix)]
-    lines_stream: LinesStream<BufReader<ReadHalf<UnixStream>>>,
-    #[cfg(windows)]
-    lines_stream: LinesStream<BufReader<ReadHalf<TcpStream>>>,
-}
-
-pub struct AsyncFrontendRequestWriter {
-    #[cfg(unix)]
-    tx: WriteHalf<UnixStream>,
-    #[cfg(windows)]
-    tx: WriteHalf<TcpStream>,
-}
-
-impl Stream for AsyncFrontendEventReader {
-    type Item = Result<FrontendEvent, IpcError>;
-
-    fn poll_next(
-        mut self: std::pin::Pin<&mut Self>,
-        cx: &mut std::task::Context<'_>,
-    ) -> std::task::Poll<Option<Self::Item>> {
-        let line = ready!(self.lines_stream.poll_next_unpin(cx));
-        let event = line.map(|l| {
-            l.map_err(Into::<IpcError>::into)
-                .and_then(|l| serde_json::from_str(l.as_str()).map_err(|e| e.into()))
-        });
-        Poll::Ready(event)
-    }
-}
-
-impl AsyncFrontendRequestWriter {
-    pub async fn request(&mut self, request: FrontendRequest) -> Result<(), io::Error> {
-        let mut json = serde_json::to_string(&request).unwrap();
-        log::debug!("requesting: {json}");
-        json.push('\n');
-        self.tx.write_all(json.as_bytes()).await?;
-        Ok(())
-    }
-}
-
-pub async fn connect_async(
-) -> Result<(AsyncFrontendEventReader, AsyncFrontendRequestWriter), ConnectionError> {
-    let stream = wait_for_service().await?;
-    #[cfg(unix)]
-    let (rx, tx): (ReadHalf<UnixStream>, WriteHalf<UnixStream>) = tokio::io::split(stream);
-    #[cfg(windows)]
-    let (rx, tx): (ReadHalf<TcpStream>, WriteHalf<TcpStream>) = tokio::io::split(stream);
-    let buf_reader = BufReader::new(rx);
-    let lines = buf_reader.lines();
-    let lines_stream = LinesStream::new(lines);
-    let reader = AsyncFrontendEventReader { lines_stream };
-    let writer = AsyncFrontendRequestWriter { tx };
-    Ok((reader, writer))
-}
-
-/// wait for the lan-mouse socket to come online
-#[cfg(unix)]
-async fn wait_for_service() -> Result<UnixStream, ConnectionError> {
-    let socket_path = crate::default_socket_path()?;
-    let mut duration = Duration::from_millis(10);
-    loop {
-        if let Ok(stream) = UnixStream::connect(&socket_path).await {
-            break Ok(stream);
-        }
-        // a signaling mechanism or inotify could be used to
-        // improve this
-        tokio::time::sleep(exponential_back_off(&mut duration)).await;
-    }
-}
-
-#[cfg(windows)]
-async fn wait_for_service() -> Result<TcpStream, ConnectionError> {
-    let mut duration = Duration::from_millis(10);
-    loop {
-        if let Ok(stream) = TcpStream::connect("127.0.0.1:5252").await {
-            break Ok(stream);
-        }
-        tokio::time::sleep(exponential_back_off(&mut duration)).await;
-    }
-}
-
-fn exponential_back_off(duration: &mut Duration) -> Duration {
-    let new = duration.saturating_mul(2);
-    *duration = min(new, Duration::from_secs(1));
-    *duration
-}

lan-mouse-ipc/src/lib.rs

@@ -1,264 +0,0 @@
-use std::{
-    collections::HashSet,
-    env::VarError,
-    fmt::Display,
-    io,
-    net::{IpAddr, SocketAddr},
-    str::FromStr,
-};
-use thiserror::Error;
-
-#[cfg(unix)]
-use std::{
-    env,
-    path::{Path, PathBuf},
-};
-
-use serde::{Deserialize, Serialize};
-
-mod connect;
-mod connect_async;
-mod listen;
-
-pub use connect::{connect, FrontendEventReader, FrontendRequestWriter};
-pub use connect_async::{connect_async, AsyncFrontendEventReader, AsyncFrontendRequestWriter};
-pub use listen::AsyncFrontendListener;
-
-#[derive(Debug, Error)]
-pub enum ConnectionError {
-    #[error(transparent)]
-    SocketPath(#[from] SocketPathError),
-    #[error(transparent)]
-    Io(#[from] io::Error),
-}
-
-#[derive(Debug, Error)]
-pub enum ListenerCreationError {
-    #[error("could not determine socket-path: `{0}`")]
-    SocketPath(#[from] SocketPathError),
-    #[error("service already running!")]
-    AlreadyRunning,
-    #[error("failed to bind lan-mouse socket: `{0}`")]
-    Bind(io::Error),
-}
-
-#[derive(Debug, Error)]
-pub enum IpcError {
-    #[error("io error occured: `{0}`")]
-    Io(#[from] io::Error),
-    #[error("invalid json: `{0}`")]
-    Json(#[from] serde_json::Error),
-    #[error(transparent)]
-    Connection(#[from] ConnectionError),
-    #[error(transparent)]
-    Listen(#[from] ListenerCreationError),
-}
-
-pub const DEFAULT_PORT: u16 = 4242;
-
-#[derive(Debug, Default, Eq, Hash, PartialEq, Clone, Copy, Serialize, Deserialize)]
-pub enum Position {
-    #[default]
-    Left,
-    Right,
-    Top,
-    Bottom,
-}
-
-#[derive(Debug, Error)]
-#[error("not a valid position: {pos}")]
-pub struct PositionParseError {
-    pos: String,
-}
-
-impl FromStr for Position {
-    type Err = PositionParseError;
-
-    fn from_str(s: &str) -> Result<Self, Self::Err> {
-        match s {
-            "left" => Ok(Self::Left),
-            "right" => Ok(Self::Right),
-            "top" => Ok(Self::Top),
-            "bottom" => Ok(Self::Bottom),
-            _ => Err(PositionParseError { pos: s.into() }),
-        }
-    }
-}
-
-impl Display for Position {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(
-            f,
-            "{}",
-            match self {
-                Position::Left => "left",
-                Position::Right => "right",
-                Position::Top => "top",
-                Position::Bottom => "bottom",
-            }
-        )
-    }
-}
-
-impl TryFrom<&str> for Position {
-    type Error = ();
-
-    fn try_from(s: &str) -> Result<Self, Self::Error> {
-        match s {
-            "left" => Ok(Position::Left),
-            "right" => Ok(Position::Right),
-            "top" => Ok(Position::Top),
-            "bottom" => Ok(Position::Bottom),
-            _ => Err(()),
-        }
-    }
-}
-
-#[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
-pub struct ClientConfig {
-    /// hostname of this client
-    pub hostname: Option<String>,
-    /// fix ips, determined by the user
-    pub fix_ips: Vec<IpAddr>,
-    /// both active_addr and addrs can be None / empty so port needs to be stored seperately
-    pub port: u16,
-    /// position of a client on screen
-    pub pos: Position,
-    /// enter hook
-    pub cmd: Option<String>,
-}
-
-impl Default for ClientConfig {
-    fn default() -> Self {
-        Self {
-            port: DEFAULT_PORT,
-            hostname: Default::default(),
-            fix_ips: Default::default(),
-            pos: Default::default(),
-            cmd: None,
-        }
-    }
-}
-
-pub type ClientHandle = u64;
-
-#[derive(Debug, Default, Clone, Serialize, Deserialize)]
-pub struct ClientState {
-    /// events should be sent to and received from the client
-    pub active: bool,
-    /// `active` address of the client, used to send data to.
-    /// This should generally be the socket address where data
-    /// was last received from.
-    pub active_addr: Option<SocketAddr>,
-    /// tracks whether or not the client is responding to pings
-    pub alive: bool,
-    /// ips from dns
-    pub dns_ips: Vec<IpAddr>,
-    /// all ip addresses associated with a particular client
-    /// e.g. Laptops usually have at least an ethernet and a wifi port
-    /// which have different ip addresses
-    pub ips: HashSet<IpAddr>,
-    /// client has pressed keys
-    pub has_pressed_keys: bool,
-    /// dns resolving in progress
-    pub resolving: bool,
-}
-
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub enum FrontendEvent {
-    /// client state has changed, new state must be requested via [`FrontendRequest::GetState`]
-    Changed(ClientHandle),
-    /// a client was created
-    Created(ClientHandle, ClientConfig, ClientState),
-    /// no such client
-    NoSuchClient(ClientHandle),
-    /// state changed
-    State(ClientHandle, ClientConfig, ClientState),
-    /// the client was deleted
-    Deleted(ClientHandle),
-    /// new port, reason of failure (if failed)
-    PortChanged(u16, Option<String>),
-    /// list of all clients, used for initial state synchronization
-    Enumerate(Vec<(ClientHandle, ClientConfig, ClientState)>),
-    /// an error occured
-    Error(String),
-    /// capture status
-    CaptureStatus(Status),
-    /// emulation status
-    EmulationStatus(Status),
-}
-
-#[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
-pub enum FrontendRequest {
-    /// activate/deactivate client
-    Activate(ClientHandle, bool),
-    /// add a new client
-    Create,
-    /// change the listen port (recreate udp listener)
-    ChangePort(u16),
-    /// remove a client
-    Delete(ClientHandle),
-    /// request an enumeration of all clients
-    Enumerate(),
-    /// resolve dns
-    ResolveDns(ClientHandle),
-    /// update hostname
-    UpdateHostname(ClientHandle, Option<String>),
-    /// update port
-    UpdatePort(ClientHandle, u16),
-    /// update position
-    UpdatePosition(ClientHandle, Position),
-    /// update fix-ips
-    UpdateFixIps(ClientHandle, Vec<IpAddr>),
-    /// request the state of the given client
-    GetState(ClientHandle),
-    /// request reenabling input capture
-    EnableCapture,
-    /// request reenabling input emulation
-    EnableEmulation,
-    /// synchronize all state
-    Sync,
-}
-
-#[derive(Clone, Copy, Debug, Default, Serialize, Deserialize)]
-pub enum Status {
-    #[default]
-    Disabled,
-    Enabled,
-}
-
-impl From<Status> for bool {
-    fn from(status: Status) -> Self {
-        match status {
-            Status::Enabled => true,
-            Status::Disabled => false,
-        }
-    }
-}
-
-#[cfg(unix)]
-const LAN_MOUSE_SOCKET_NAME: &str = "lan-mouse-socket.sock";
-
-#[derive(Debug, Error)]
-pub enum SocketPathError {
-    #[error("could not determine $XDG_RUNTIME_DIR: `{0}`")]
-    XdgRuntimeDirNotFound(VarError),
-    #[error("could not determine $HOME: `{0}`")]
-    HomeDirNotFound(VarError),
-}
-
-#[cfg(all(unix, not(target_os = "macos")))]
-pub fn default_socket_path() -> Result<PathBuf, SocketPathError> {
-    let xdg_runtime_dir =
-        env::var("XDG_RUNTIME_DIR").map_err(SocketPathError::XdgRuntimeDirNotFound)?;
-    Ok(Path::new(xdg_runtime_dir.as_str()).join(LAN_MOUSE_SOCKET_NAME))
-}
-
-#[cfg(all(unix, target_os = "macos"))]
-pub fn default_socket_path() -> Result<PathBuf, SocketPathError> {
-    let home = env::var("HOME").map_err(SocketPathError::HomeDirNotFound)?;
-    Ok(Path::new(home.as_str())
-        .join("Library")
-        .join("Caches")
-        .join(LAN_MOUSE_SOCKET_NAME))
-}

lan-mouse-ipc/src/listen.rs

@@ -1,147 +0,0 @@
-use futures::{stream::SelectAll, Stream, StreamExt};
-#[cfg(unix)]
-use std::path::PathBuf;
-use std::{
-    io::ErrorKind,
-    pin::Pin,
-    task::{Context, Poll},
-};
-
-use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader, ReadHalf, WriteHalf};
-use tokio_stream::wrappers::LinesStream;
-
-#[cfg(unix)]
-use tokio::net::UnixListener;
-#[cfg(unix)]
-use tokio::net::UnixStream;
-
-#[cfg(windows)]
-use tokio::net::TcpListener;
-#[cfg(windows)]
-use tokio::net::TcpStream;
-
-use crate::{FrontendEvent, FrontendRequest, IpcError, ListenerCreationError};
-
-pub struct AsyncFrontendListener {
-    #[cfg(windows)]
-    listener: TcpListener,
-    #[cfg(unix)]
-    listener: UnixListener,
-    #[cfg(unix)]
-    socket_path: PathBuf,
-    #[cfg(unix)]
-    line_streams: SelectAll<LinesStream<BufReader<ReadHalf<UnixStream>>>>,
-    #[cfg(windows)]
-    line_streams: SelectAll<LinesStream<BufReader<ReadHalf<TcpStream>>>>,
-    #[cfg(unix)]
-    tx_streams: Vec<WriteHalf<UnixStream>>,
-    #[cfg(windows)]
-    tx_streams: Vec<WriteHalf<TcpStream>>,
-}
-
-impl AsyncFrontendListener {
-    pub async fn new() -> Result<Self, ListenerCreationError> {
-        #[cfg(unix)]
-        let (socket_path, listener) = {
-            let socket_path = crate::default_socket_path()?;
-
-            log::debug!("remove socket: {:?}", socket_path);
-            if socket_path.exists() {
-                // try to connect to see if some other instance
-                // of lan-mouse is already running
-                match UnixStream::connect(&socket_path).await {
-                    // connected -> lan-mouse is already running
-                    Ok(_) => return Err(ListenerCreationError::AlreadyRunning),
-                    // lan-mouse is not running but a socket was left behind
-                    Err(e) => {
-                        log::debug!("{socket_path:?}: {e} - removing left behind socket");
-                        let _ = std::fs::remove_file(&socket_path);
-                    }
-                }
-            }
-            let listener = match UnixListener::bind(&socket_path) {
-                Ok(ls) => ls,
-                // some other lan-mouse instance has bound the socket in the meantime
-                Err(e) if e.kind() == ErrorKind::AddrInUse => {
-                    return Err(ListenerCreationError::AlreadyRunning)
-                }
-                Err(e) => return Err(ListenerCreationError::Bind(e)),
-            };
-            (socket_path, listener)
-        };
-
-        #[cfg(windows)]
-        let listener = match TcpListener::bind("127.0.0.1:5252").await {
-            Ok(ls) => ls,
-            // some other lan-mouse instance has bound the socket in the meantime
-            Err(e) if e.kind() == ErrorKind::AddrInUse => {
-                return Err(ListenerCreationError::AlreadyRunning)
-            }
-            Err(e) => return Err(ListenerCreationError::Bind(e)),
-        };
-
-        let adapter = Self {
-            listener,
-            #[cfg(unix)]
-            socket_path,
-            line_streams: SelectAll::new(),
-            tx_streams: vec![],
-        };
-
-        Ok(adapter)
-    }
-
-    pub async fn broadcast(&mut self, notify: FrontendEvent) {
-        // encode event
-        let mut json = serde_json::to_string(&notify).unwrap();
-        json.push('\n');
-
-        let mut keep = vec![];
-        // TODO do simultaneously
-        for tx in self.tx_streams.iter_mut() {
-            // write len + payload
-            if tx.write(json.as_bytes()).await.is_err() {
-                keep.push(false);
-                continue;
-            }
-            keep.push(true);
-        }
-
-        // could not find a better solution because async
-        let mut keep = keep.into_iter();
-        self.tx_streams.retain(|_| keep.next().unwrap());
-    }
-}
-
-#[cfg(unix)]
-impl Drop for AsyncFrontendListener {
-    fn drop(&mut self) {
-        log::debug!("remove socket: {:?}", self.socket_path);
-        let _ = std::fs::remove_file(&self.socket_path);
-    }
-}
-
-impl Stream for AsyncFrontendListener {
-    type Item = Result<FrontendRequest, IpcError>;
-    fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
-        if let Poll::Ready(Some(Ok(l))) = self.line_streams.poll_next_unpin(cx) {
-            let request = serde_json::from_str(l.as_str()).map_err(|e| e.into());
-            return Poll::Ready(Some(request));
-        }
-        let mut sync = false;
-        while let Poll::Ready(Ok((stream, _))) = self.listener.poll_accept(cx) {
-            let (rx, tx) = tokio::io::split(stream);
-            let buf_reader = BufReader::new(rx);
-            let lines = buf_reader.lines();
-            let lines = LinesStream::new(lines);
-            self.line_streams.push(lines);
-            self.tx_streams.push(tx);
-            sync = true;
-        }
-        if sync {
-            Poll::Ready(Some(Ok(FrontendRequest::Sync)))
-        } else {
-            Poll::Pending
-        }
-    }
-}

lan-mouse-proto/Cargo.toml

@@ -1,13 +0,0 @@
-[package]
-name = "lan-mouse-proto"
-description = "network protocol for lan-mouse"
-version = "0.1.0"
-edition = "2021"
-license = "GPL-3.0-or-later"
-repository = "https://github.com/feschber/lan-mouse"
-
-[dependencies]
-num_enum = "0.7.2"
-thiserror = "1.0.61"
-input-event = { path = "../input-event", version = "0.2.1" }
-paste = "1.0"

lan-mouse-proto/src/lib.rs

@@ -1,251 +0,0 @@
-use input_event::{Event as InputEvent, KeyboardEvent, PointerEvent};
-use num_enum::{IntoPrimitive, TryFromPrimitive, TryFromPrimitiveError};
-use paste::paste;
-use std::{
-    fmt::{Debug, Display},
-    mem::size_of,
-};
-use thiserror::Error;
-
-/// defines the maximum size an encoded event can take up
-/// this is currently the pointer motion event
-/// type: u8, time: u32, dx: f64, dy: f64
-pub const MAX_EVENT_SIZE: usize = size_of::<u8>() + size_of::<u32>() + 2 * size_of::<f64>();
-
-/// error type for protocol violations
-#[derive(Debug, Error)]
-pub enum ProtocolError {
-    /// event type does not exist
-    #[error("invalid event id: `{0}`")]
-    InvalidEventId(#[from] TryFromPrimitiveError<EventType>),
-}
-
-/// main lan-mouse protocol event type
-#[derive(Clone, Copy, Debug)]
-pub enum ProtoEvent {
-    /// notify a client that the cursor entered its region
-    /// [`ProtoEvent::Ack`] with the same serial is used for synchronization between devices
-    Enter(u32),
-    /// notify a client that the cursor left its region
-    /// [`ProtoEvent::Ack`] with the same serial is used for synchronization between devices
-    Leave(u32),
-    /// acknowledge of an [`ProtoEvent::Enter`] or [`ProtoEvent::Leave`] event
-    Ack(u32),
-    /// Input event
-    Input(InputEvent),
-    /// Ping event for tracking unresponsive clients.
-    /// A client has to respond with [`ProtoEvent::Pong`].
-    Ping,
-    /// Response to [`ProtoEvent::Ping`]
-    Pong,
-}
-
-impl Display for ProtoEvent {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            ProtoEvent::Enter(s) => write!(f, "Enter({s})"),
-            ProtoEvent::Leave(s) => write!(f, "Leave({s})"),
-            ProtoEvent::Ack(s) => write!(f, "Ack({s})"),
-            ProtoEvent::Input(e) => write!(f, "{e}"),
-            ProtoEvent::Ping => write!(f, "ping"),
-            ProtoEvent::Pong => write!(f, "pong"),
-        }
-    }
-}
-
-#[derive(TryFromPrimitive, IntoPrimitive)]
-#[repr(u8)]
-pub enum EventType {
-    PointerMotion,
-    PointerButton,
-    PointerAxis,
-    PointerAxisValue120,
-    KeyboardKey,
-    KeyboardModifiers,
-    Ping,
-    Pong,
-    Enter,
-    Leave,
-    Ack,
-}
-
-impl ProtoEvent {
-    fn event_type(&self) -> EventType {
-        match self {
-            ProtoEvent::Input(e) => match e {
-                InputEvent::Pointer(p) => match p {
-                    PointerEvent::Motion { .. } => EventType::PointerMotion,
-                    PointerEvent::Button { .. } => EventType::PointerButton,
-                    PointerEvent::Axis { .. } => EventType::PointerAxis,
-                    PointerEvent::AxisDiscrete120 { .. } => EventType::PointerAxisValue120,
-                },
-                InputEvent::Keyboard(k) => match k {
-                    KeyboardEvent::Key { .. } => EventType::KeyboardKey,
-                    KeyboardEvent::Modifiers { .. } => EventType::KeyboardModifiers,
-                },
-            },
-            ProtoEvent::Ping => EventType::Ping,
-            ProtoEvent::Pong => EventType::Pong,
-            ProtoEvent::Enter(_) => EventType::Enter,
-            ProtoEvent::Leave(_) => EventType::Leave,
-            ProtoEvent::Ack(_) => EventType::Ack,
-        }
-    }
-}
-
-impl TryFrom<[u8; MAX_EVENT_SIZE]> for ProtoEvent {
-    type Error = ProtocolError;
-
-    fn try_from(buf: [u8; MAX_EVENT_SIZE]) -> Result<Self, Self::Error> {
-        let mut buf = &buf[..];
-        let event_type = decode_u8(&mut buf)?;
-        match EventType::try_from(event_type)? {
-            EventType::PointerMotion => {
-                Ok(Self::Input(InputEvent::Pointer(PointerEvent::Motion {
-                    time: decode_u32(&mut buf)?,
-                    dx: decode_f64(&mut buf)?,
-                    dy: decode_f64(&mut buf)?,
-                })))
-            }
-            EventType::PointerButton => {
-                Ok(Self::Input(InputEvent::Pointer(PointerEvent::Button {
-                    time: decode_u32(&mut buf)?,
-                    button: decode_u32(&mut buf)?,
-                    state: decode_u32(&mut buf)?,
-                })))
-            }
-            EventType::PointerAxis => Ok(Self::Input(InputEvent::Pointer(PointerEvent::Axis {
-                time: decode_u32(&mut buf)?,
-                axis: decode_u8(&mut buf)?,
-                value: decode_f64(&mut buf)?,
-            }))),
-            EventType::PointerAxisValue120 => Ok(Self::Input(InputEvent::Pointer(
-                PointerEvent::AxisDiscrete120 {
-                    axis: decode_u8(&mut buf)?,
-                    value: decode_i32(&mut buf)?,
-                },
-            ))),
-            EventType::KeyboardKey => Ok(Self::Input(InputEvent::Keyboard(KeyboardEvent::Key {
-                time: decode_u32(&mut buf)?,
-                key: decode_u32(&mut buf)?,
-                state: decode_u8(&mut buf)?,
-            }))),
-            EventType::KeyboardModifiers => Ok(Self::Input(InputEvent::Keyboard(
-                KeyboardEvent::Modifiers {
-                    depressed: decode_u32(&mut buf)?,
-                    latched: decode_u32(&mut buf)?,
-                    locked: decode_u32(&mut buf)?,
-                    group: decode_u32(&mut buf)?,
-                },
-            ))),
-            EventType::Ping => Ok(Self::Ping),
-            EventType::Pong => Ok(Self::Pong),
-            EventType::Enter => Ok(Self::Enter(decode_u32(&mut buf)?)),
-            EventType::Leave => Ok(Self::Leave(decode_u32(&mut buf)?)),
-            EventType::Ack => Ok(Self::Ack(decode_u32(&mut buf)?)),
-        }
-    }
-}
-
-impl From<ProtoEvent> for ([u8; MAX_EVENT_SIZE], usize) {
-    fn from(event: ProtoEvent) -> Self {
-        let mut buf = [0u8; MAX_EVENT_SIZE];
-        let mut len = 0usize;
-        {
-            let mut buf = &mut buf[..];
-            let buf = &mut buf;
-            let len = &mut len;
-            encode_u8(buf, len, event.event_type() as u8);
-            match event {
-                ProtoEvent::Input(event) => match event {
-                    InputEvent::Pointer(p) => match p {
-                        PointerEvent::Motion { time, dx, dy } => {
-                            encode_u32(buf, len, time);
-                            encode_f64(buf, len, dx);
-                            encode_f64(buf, len, dy);
-                        }
-                        PointerEvent::Button {
-                            time,
-                            button,
-                            state,
-                        } => {
-                            encode_u32(buf, len, time);
-                            encode_u32(buf, len, button);
-                            encode_u32(buf, len, state);
-                        }
-                        PointerEvent::Axis { time, axis, value } => {
-                            encode_u32(buf, len, time);
-                            encode_u8(buf, len, axis);
-                            encode_f64(buf, len, value);
-                        }
-                        PointerEvent::AxisDiscrete120 { axis, value } => {
-                            encode_u8(buf, len, axis);
-                            encode_i32(buf, len, value);
-                        }
-                    },
-                    InputEvent::Keyboard(k) => match k {
-                        KeyboardEvent::Key { time, key, state } => {
-                            encode_u32(buf, len, time);
-                            encode_u32(buf, len, key);
-                            encode_u8(buf, len, state);
-                        }
-                        KeyboardEvent::Modifiers {
-                            depressed,
-                            latched,
-                            locked,
-                            group,
-                        } => {
-                            encode_u32(buf, len, depressed);
-                            encode_u32(buf, len, latched);
-                            encode_u32(buf, len, locked);
-                            encode_u32(buf, len, group);
-                        }
-                    },
-                },
-                ProtoEvent::Ping => {}
-                ProtoEvent::Pong => {}
-                ProtoEvent::Enter(serial) => encode_u32(buf, len, serial),
-                ProtoEvent::Leave(serial) => encode_u32(buf, len, serial),
-                ProtoEvent::Ack(serial) => encode_u32(buf, len, serial),
-            }
-        }
-        (buf, len)
-    }
-}
-
-macro_rules! decode_impl {
-    ($t:ty) => {
-        paste! {
-            fn [<decode_ $t>](data: &mut &[u8]) -> Result<$t, ProtocolError> {
-                let (int_bytes, rest) = data.split_at(size_of::<$t>());
-                *data = rest;
-                Ok($t::from_be_bytes(int_bytes.try_into().unwrap()))
-            }
-        }
-    };
-}
-
-decode_impl!(u8);
-decode_impl!(u32);
-decode_impl!(i32);
-decode_impl!(f64);
-
-macro_rules! encode_impl {
-    ($t:ty) => {
-        paste! {
-            fn [<encode_ $t>](buf: &mut &mut [u8], amt: &mut usize, n: $t) {
-                let src = n.to_be_bytes();
-                let data = std::mem::take(buf);
-                let (int_bytes, rest) = data.split_at_mut(size_of::<$t>());
-                int_bytes.copy_from_slice(&src);
-                *amt += size_of::<$t>();
-                *buf = rest
-            }
-        }
-    };
-}
-
-encode_impl!(u8);
-encode_impl!(u32);
-encode_impl!(i32);
-encode_impl!(f64);

nix/default.nix

@@ -12,7 +12,6 @@ rustPlatform.buildRustPackage {
   version = version;
 
   nativeBuildInputs = with pkgs; [
-    git
     pkg-config
     cmake
     makeWrapper
@@ -24,11 +23,9 @@ rustPlatform.buildRustPackage {
     gtk4
     libadwaita
     xorg.libXtst
-  ] ++ lib.optionals stdenv.isDarwin
+  ] ++ lib.optionals stdenv.isDarwin [
-  (with darwin.apple_sdk_11_0.frameworks; [
+    darwin.apple_sdk_11_0.frameworks.CoreGraphics
-    CoreGraphics
+  ];
-    ApplicationServices
-  ]);
 
   src = builtins.path {
     name = pname;
@@ -44,9 +41,6 @@ rustPlatform.buildRustPackage {
   postInstall = ''
     wrapProgram "$out/bin/lan-mouse" \
       --set GDK_PIXBUF_MODULE_FILE ${pkgs.librsvg.out}/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache
-
-    install -Dm444 *.desktop -t $out/share/applications
-    install -Dm444 lan-mouse-gtk/resources/*.svg -t $out/share/icons/hicolor/scalable/apps
   '';
 
   meta = with lib; {

src/capture_test.rs

@@ -1,17 +1,28 @@
 use crate::config::Config;
 use futures::StreamExt;
-use input_capture::{self, CaptureError, CaptureEvent, InputCapture, InputCaptureError, Position};
+use input_capture::{self, CaptureError, InputCapture, InputCaptureError, Position};
 use input_event::{Event, KeyboardEvent};
+use tokio::task::LocalSet;
 
-pub async fn run(config: Config) -> Result<(), InputCaptureError> {
+pub fn run() -> anyhow::Result<()> {
     log::info!("running input capture test");
+    let runtime = tokio::runtime::Builder::new_current_thread()
+        .enable_io()
+        .enable_time()
+        .build()?;
+
+    let config = Config::new()?;
+
+    Ok(runtime.block_on(LocalSet::new().run_until(input_capture_test(config)))?)
+}
+
+async fn input_capture_test(config: Config) -> Result<(), InputCaptureError> {
     log::info!("creating input capture");
     let backend = config.capture_backend.map(|b| b.into());
     loop {
         let mut input_capture = InputCapture::new(backend).await?;
         log::info!("creating clients");
         input_capture.create(0, Position::Left).await?;
-        input_capture.create(4, Position::Left).await?;
         input_capture.create(1, Position::Right).await?;
         input_capture.create(2, Position::Top).await?;
         input_capture.create(3, Position::Bottom).await?;
@@ -29,14 +40,13 @@ async fn do_capture(input_capture: &mut InputCapture) -> Result<(), CaptureError
             .await
             .ok_or(CaptureError::EndOfStream)??;
         let pos = match client {
-            0 | 4 => Position::Left,
+            0 => Position::Left,
             1 => Position::Right,
             2 => Position::Top,
-            3 => Position::Bottom,
+            _ => Position::Bottom,
-            _ => panic!(),
         };
-        log::info!("position: {client} ({pos}), event: {event}");
+        log::info!("position: {pos}, event: {event}");
-        if let CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Key { key: 1, .. })) = event {
+        if let Event::Keyboard(KeyboardEvent::Key { key: 1, .. }) = event {
             input_capture.release().await?;
             break Ok(());
         }

src/client.rs

@@ -1,8 +1,135 @@
-use std::net::SocketAddr;
+use std::{
+    collections::HashSet,
+    fmt::Display,
+    net::{IpAddr, SocketAddr},
+    str::FromStr,
+};
 
+use serde::{Deserialize, Serialize};
 use slab::Slab;
+use thiserror::Error;
 
-use lan_mouse_ipc::{ClientConfig, ClientHandle, ClientState, Position};
+use crate::config::DEFAULT_PORT;
+use input_capture;
+
+#[derive(Debug, Default, Eq, Hash, PartialEq, Clone, Copy, Serialize, Deserialize)]
+pub enum Position {
+    #[default]
+    Left,
+    Right,
+    Top,
+    Bottom,
+}
+
+impl From<Position> for input_capture::Position {
+    fn from(position: Position) -> input_capture::Position {
+        match position {
+            Position::Left => input_capture::Position::Left,
+            Position::Right => input_capture::Position::Right,
+            Position::Top => input_capture::Position::Top,
+            Position::Bottom => input_capture::Position::Bottom,
+        }
+    }
+}
+
+#[derive(Debug, Error)]
+#[error("not a valid position: {pos}")]
+pub struct PositionParseError {
+    pos: String,
+}
+
+impl FromStr for Position {
+    type Err = PositionParseError;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "left" => Ok(Self::Left),
+            "right" => Ok(Self::Right),
+            "top" => Ok(Self::Top),
+            "bottom" => Ok(Self::Bottom),
+            _ => Err(PositionParseError { pos: s.into() }),
+        }
+    }
+}
+
+impl Display for Position {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{}",
+            match self {
+                Position::Left => "left",
+                Position::Right => "right",
+                Position::Top => "top",
+                Position::Bottom => "bottom",
+            }
+        )
+    }
+}
+
+impl TryFrom<&str> for Position {
+    type Error = ();
+
+    fn try_from(s: &str) -> Result<Self, Self::Error> {
+        match s {
+            "left" => Ok(Position::Left),
+            "right" => Ok(Position::Right),
+            "top" => Ok(Position::Top),
+            "bottom" => Ok(Position::Bottom),
+            _ => Err(()),
+        }
+    }
+}
+
+#[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
+pub struct ClientConfig {
+    /// hostname of this client
+    pub hostname: Option<String>,
+    /// fix ips, determined by the user
+    pub fix_ips: Vec<IpAddr>,
+    /// both active_addr and addrs can be None / empty so port needs to be stored seperately
+    pub port: u16,
+    /// position of a client on screen
+    pub pos: Position,
+    /// enter hook
+    pub cmd: Option<String>,
+}
+
+impl Default for ClientConfig {
+    fn default() -> Self {
+        Self {
+            port: DEFAULT_PORT,
+            hostname: Default::default(),
+            fix_ips: Default::default(),
+            pos: Default::default(),
+            cmd: None,
+        }
+    }
+}
+
+pub type ClientHandle = u64;
+
+#[derive(Debug, Default, Clone, Serialize, Deserialize)]
+pub struct ClientState {
+    /// events should be sent to and received from the client
+    pub active: bool,
+    /// `active` address of the client, used to send data to.
+    /// This should generally be the socket address where data
+    /// was last received from.
+    pub active_addr: Option<SocketAddr>,
+    /// tracks whether or not the client is responding to pings
+    pub alive: bool,
+    /// ips from dns
+    pub dns_ips: Vec<IpAddr>,
+    /// all ip addresses associated with a particular client
+    /// e.g. Laptops usually have at least an ethernet and a wifi port
+    /// which have different ip addresses
+    pub ips: HashSet<IpAddr>,
+    /// client has pressed keys
+    pub has_pressed_keys: bool,
+    /// dns resolving in progress
+    pub resolving: bool,
+}
 
 #[derive(Default)]
 pub struct ClientManager {

src/config.rs

@@ -1,20 +1,22 @@
+use anyhow::Result;
 use clap::{Parser, ValueEnum};
 use serde::{Deserialize, Serialize};
-use std::env::{self, VarError};
+use std::collections::HashSet;
+use std::env;
 use std::fmt::Display;
-use std::fs;
 use std::net::IpAddr;
-use std::{collections::HashSet, io};
+use std::{error::Error, fs};
-use thiserror::Error;
 use toml;
 
-use lan_mouse_ipc::{Position, DEFAULT_PORT};
+use crate::client::Position;
 
 use input_event::scancode::{
     self,
     Linux::{KeyLeftAlt, KeyLeftCtrl, KeyLeftMeta, KeyLeftShift},
 };
 
+pub const DEFAULT_PORT: u16 = 4242;
+
 #[derive(Serialize, Deserialize, Debug)]
 pub struct ConfigToml {
     pub capture_backend: Option<CaptureBackend>,
@@ -40,7 +42,7 @@ pub struct TomlClient {
 }
 
 impl ConfigToml {
-    pub fn new(path: &str) -> Result<ConfigToml, ConfigError> {
+    pub fn new(path: &str) -> Result<ConfigToml, Box<dyn Error>> {
         let config = fs::read_to_string(path)?;
         log::info!("using config: \"{path}\"");
         Ok(toml::from_str::<_>(&config)?)
@@ -48,7 +50,7 @@ impl ConfigToml {
 }
 
 #[derive(Parser, Debug)]
-#[command(author, version=env!("GIT_DESCRIBE"), about, long_about = None)]
+#[command(author, version, about, long_about = None)]
 struct CliArgs {
     /// the listen port for lan-mouse
     #[arg(short, long)]
@@ -229,21 +231,11 @@ pub struct ConfigClient {
     pub enter_hook: Option<String>,
 }
 
-#[derive(Debug, Error)]
-pub enum ConfigError {
-    #[error(transparent)]
-    Toml(#[from] toml::de::Error),
-    #[error(transparent)]
-    Io(#[from] io::Error),
-    #[error(transparent)]
-    Var(#[from] VarError),
-}
-
 const DEFAULT_RELEASE_KEYS: [scancode::Linux; 4] =
     [KeyLeftCtrl, KeyLeftShift, KeyLeftMeta, KeyLeftAlt];
 
 impl Config {
-    pub fn new() -> Result<Self, ConfigError> {
+    pub fn new() -> Result<Self> {
         let args = CliArgs::parse();
         let config_file = "config.toml";
         #[cfg(unix)]

src/dns.rs

@@ -1,10 +1,9 @@
-use local_channel::mpsc::Receiver;
 use std::net::IpAddr;
+use tokio::sync::mpsc::Receiver;
 
 use hickory_resolver::{error::ResolveError, TokioAsyncResolver};
 
-use crate::server::Server;
+use crate::{client::ClientHandle, server::Server};
-use lan_mouse_ipc::ClientHandle;
 
 pub(crate) struct DnsResolver {
     resolver: TokioAsyncResolver,

src/emulation_test.rs

@@ -1,19 +1,30 @@
 use crate::config::Config;
-use input_emulation::{InputEmulation, InputEmulationError};
+use anyhow::Result;
+use input_emulation::InputEmulation;
 use input_event::{Event, PointerEvent};
 use std::f64::consts::PI;
 use std::time::{Duration, Instant};
+use tokio::task::LocalSet;
+
+pub fn run() -> Result<()> {
+    log::info!("running input emulation test");
+    let runtime = tokio::runtime::Builder::new_current_thread()
+        .enable_io()
+        .enable_time()
+        .build()?;
+
+    let config = Config::new()?;
+
+    runtime.block_on(LocalSet::new().run_until(input_emulation_test(config)))
+}
 
 const FREQUENCY_HZ: f64 = 1.0;
 const RADIUS: f64 = 100.0;
 
-pub async fn run(config: Config) -> Result<(), InputEmulationError> {
+async fn input_emulation_test(config: Config) -> Result<()> {
-    log::info!("running input emulation test");
-
     let backend = config.emulation_backend.map(|b| b.into());
     let mut emulation = InputEmulation::new(backend).await?;
     emulation.create(0).await;
-
     let start = Instant::now();
     let mut offset = (0, 0);
     loop {

src/frontend.rs

@@ -0,0 +1,307 @@
+use anyhow::{anyhow, Result};
+use std::{cmp::min, io::ErrorKind, net::IpAddr, str, time::Duration};
+
+#[cfg(unix)]
+use std::{
+    env,
+    path::{Path, PathBuf},
+};
+
+use tokio::io::ReadHalf;
+use tokio::io::{AsyncReadExt, AsyncWriteExt, WriteHalf};
+
+#[cfg(unix)]
+use tokio::net::UnixListener;
+#[cfg(unix)]
+use tokio::net::UnixStream;
+
+#[cfg(windows)]
+use tokio::net::TcpListener;
+#[cfg(windows)]
+use tokio::net::TcpStream;
+
+use serde::{Deserialize, Serialize};
+
+use crate::{
+    client::{ClientConfig, ClientHandle, ClientState, Position},
+    config::{Config, Frontend},
+};
+
+/// cli frontend
+pub mod cli;
+
+/// gtk frontend
+#[cfg(feature = "gtk")]
+pub mod gtk;
+
+pub fn run_frontend(config: &Config) -> Result<()> {
+    match config.frontend {
+        #[cfg(feature = "gtk")]
+        Frontend::Gtk => {
+            gtk::run();
+        }
+        #[cfg(not(feature = "gtk"))]
+        Frontend::Gtk => panic!("gtk frontend requested but feature not enabled!"),
+        Frontend::Cli => {
+            cli::run()?;
+        }
+    };
+    Ok(())
+}
+
+fn exponential_back_off(duration: &mut Duration) -> &Duration {
+    let new = duration.saturating_mul(2);
+    *duration = min(new, Duration::from_secs(1));
+    duration
+}
+
+/// wait for the lan-mouse socket to come online
+#[cfg(unix)]
+pub fn wait_for_service() -> Result<std::os::unix::net::UnixStream> {
+    let socket_path = FrontendListener::socket_path()?;
+    let mut duration = Duration::from_millis(1);
+    loop {
+        use std::os::unix::net::UnixStream;
+        if let Ok(stream) = UnixStream::connect(&socket_path) {
+            break Ok(stream);
+        }
+        // a signaling mechanism or inotify could be used to
+        // improve this
+        std::thread::sleep(*exponential_back_off(&mut duration));
+    }
+}
+
+#[cfg(windows)]
+pub fn wait_for_service() -> Result<std::net::TcpStream> {
+    let mut duration = Duration::from_millis(1);
+    loop {
+        use std::net::TcpStream;
+        if let Ok(stream) = TcpStream::connect("127.0.0.1:5252") {
+            break Ok(stream);
+        }
+        std::thread::sleep(*exponential_back_off(&mut duration));
+    }
+}
+
+#[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
+pub enum FrontendRequest {
+    /// activate/deactivate client
+    Activate(ClientHandle, bool),
+    /// add a new client
+    Create,
+    /// change the listen port (recreate udp listener)
+    ChangePort(u16),
+    /// remove a client
+    Delete(ClientHandle),
+    /// request an enumeration of all clients
+    Enumerate(),
+    /// resolve dns
+    ResolveDns(ClientHandle),
+    /// update hostname
+    UpdateHostname(ClientHandle, Option<String>),
+    /// update port
+    UpdatePort(ClientHandle, u16),
+    /// update position
+    UpdatePosition(ClientHandle, Position),
+    /// update fix-ips
+    UpdateFixIps(ClientHandle, Vec<IpAddr>),
+    /// request the state of the given client
+    GetState(ClientHandle),
+    /// request reenabling input capture
+    EnableCapture,
+    /// request reenabling input emulation
+    EnableEmulation,
+}
+
+#[derive(Clone, Copy, Debug, Default, Serialize, Deserialize)]
+pub enum Status {
+    #[default]
+    Disabled,
+    Enabled,
+}
+
+impl From<Status> for bool {
+    fn from(status: Status) -> Self {
+        match status {
+            Status::Enabled => true,
+            Status::Disabled => false,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub enum FrontendEvent {
+    /// a client was created
+    Created(ClientHandle, ClientConfig, ClientState),
+    /// no such client
+    NoSuchClient(ClientHandle),
+    /// state changed
+    State(ClientHandle, ClientConfig, ClientState),
+    /// the client was deleted
+    Deleted(ClientHandle),
+    /// new port, reason of failure (if failed)
+    PortChanged(u16, Option<String>),
+    /// list of all clients, used for initial state synchronization
+    Enumerate(Vec<(ClientHandle, ClientConfig, ClientState)>),
+    /// an error occured
+    Error(String),
+    /// capture status
+    CaptureStatus(Status),
+    /// emulation status
+    EmulationStatus(Status),
+}
+
+pub struct FrontendListener {
+    #[cfg(windows)]
+    listener: TcpListener,
+    #[cfg(unix)]
+    listener: UnixListener,
+    #[cfg(unix)]
+    socket_path: PathBuf,
+    #[cfg(unix)]
+    tx_streams: Vec<WriteHalf<UnixStream>>,
+    #[cfg(windows)]
+    tx_streams: Vec<WriteHalf<TcpStream>>,
+}
+
+impl FrontendListener {
+    #[cfg(all(unix, not(target_os = "macos")))]
+    pub fn socket_path() -> Result<PathBuf> {
+        let xdg_runtime_dir = match env::var("XDG_RUNTIME_DIR") {
+            Ok(d) => d,
+            Err(e) => return Err(anyhow!("could not find XDG_RUNTIME_DIR: {e}")),
+        };
+        let xdg_runtime_dir = Path::new(xdg_runtime_dir.as_str());
+        Ok(xdg_runtime_dir.join("lan-mouse-socket.sock"))
+    }
+
+    #[cfg(all(unix, target_os = "macos"))]
+    pub fn socket_path() -> Result<PathBuf> {
+        let home = match env::var("HOME") {
+            Ok(d) => d,
+            Err(e) => return Err(anyhow!("could not find HOME: {e}")),
+        };
+        let home = Path::new(home.as_str());
+        let path = home
+            .join("Library")
+            .join("Caches")
+            .join("lan-mouse-socket.sock");
+        Ok(path)
+    }
+
+    pub async fn new() -> Option<Result<Self>> {
+        #[cfg(unix)]
+        let (socket_path, listener) = {
+            let socket_path = match Self::socket_path() {
+                Ok(path) => path,
+                Err(e) => return Some(Err(e)),
+            };
+
+            log::debug!("remove socket: {:?}", socket_path);
+            if socket_path.exists() {
+                // try to connect to see if some other instance
+                // of lan-mouse is already running
+                match UnixStream::connect(&socket_path).await {
+                    // connected -> lan-mouse is already running
+                    Ok(_) => return None,
+                    // lan-mouse is not running but a socket was left behind
+                    Err(e) => {
+                        log::debug!("{socket_path:?}: {e} - removing left behind socket");
+                        let _ = std::fs::remove_file(&socket_path);
+                    }
+                }
+            }
+            let listener = match UnixListener::bind(&socket_path) {
+                Ok(ls) => ls,
+                // some other lan-mouse instance has bound the socket in the meantime
+                Err(e) if e.kind() == ErrorKind::AddrInUse => return None,
+                Err(e) => return Some(Err(anyhow!("failed to bind lan-mouse-socket: {e}"))),
+            };
+            (socket_path, listener)
+        };
+
+        #[cfg(windows)]
+        let listener = match TcpListener::bind("127.0.0.1:5252").await {
+            Ok(ls) => ls,
+            // some other lan-mouse instance has bound the socket in the meantime
+            Err(e) if e.kind() == ErrorKind::AddrInUse => return None,
+            Err(e) => return Some(Err(anyhow!("failed to bind lan-mouse-socket: {e}"))),
+        };
+
+        let adapter = Self {
+            listener,
+            #[cfg(unix)]
+            socket_path,
+            tx_streams: vec![],
+        };
+
+        Some(Ok(adapter))
+    }
+
+    #[cfg(unix)]
+    pub async fn accept(&mut self) -> Result<ReadHalf<UnixStream>> {
+        let stream = self.listener.accept().await?.0;
+        let (rx, tx) = tokio::io::split(stream);
+        self.tx_streams.push(tx);
+        Ok(rx)
+    }
+
+    #[cfg(windows)]
+    pub async fn accept(&mut self) -> Result<ReadHalf<TcpStream>> {
+        let stream = self.listener.accept().await?.0;
+        let (rx, tx) = tokio::io::split(stream);
+        self.tx_streams.push(tx);
+        Ok(rx)
+    }
+
+    pub(crate) async fn broadcast(&mut self, notify: FrontendEvent) {
+        // encode event
+        let json = serde_json::to_string(&notify).unwrap();
+        let payload = json.as_bytes();
+        let len = payload.len().to_be_bytes();
+        log::debug!("broadcasting event to streams: {json}");
+        let mut keep = vec![];
+        // TODO do simultaneously
+        for tx in self.tx_streams.iter_mut() {
+            // write len + payload
+            if tx.write(&len).await.is_err() {
+                keep.push(false);
+                continue;
+            }
+            if tx.write(payload).await.is_err() {
+                keep.push(false);
+                continue;
+            }
+            keep.push(true);
+        }
+
+        // could not find a better solution because async
+        let mut keep = keep.into_iter();
+        self.tx_streams.retain(|_| keep.next().unwrap());
+    }
+}
+
+#[cfg(unix)]
+impl Drop for FrontendListener {
+    fn drop(&mut self) {
+        log::debug!("remove socket: {:?}", self.socket_path);
+        let _ = std::fs::remove_file(&self.socket_path);
+    }
+}
+
+#[cfg(unix)]
+pub async fn wait_for_request(stream: &mut ReadHalf<UnixStream>) -> Result<FrontendRequest> {
+    let len = stream.read_u64().await?;
+    assert!(len <= 256);
+    let mut buf = [0u8; 256];
+    stream.read_exact(&mut buf[..len as usize]).await?;
+    Ok(serde_json::from_slice(&buf[..len as usize])?)
+}
+
+#[cfg(windows)]
+pub async fn wait_for_request(stream: &mut ReadHalf<TcpStream>) -> Result<FrontendRequest> {
+    let len = stream.read_u64().await?;
+    let mut buf = [0u8; 256];
+    stream.read_exact(&mut buf[..len as usize]).await?;
+    Ok(serde_json::from_slice(&buf[..len as usize])?)
+}

src/frontend/cli.rs

@@ -1,65 +1,78 @@
-use futures::StreamExt;
+use anyhow::{anyhow, Result};
 use tokio::{
-    io::{AsyncBufReadExt, BufReader},
+    io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader},
     task::LocalSet,
 };
 
+#[cfg(windows)]
+use tokio::net::tcp::{ReadHalf, WriteHalf};
+#[cfg(unix)]
+use tokio::net::unix::{ReadHalf, WriteHalf};
+
 use std::io::{self, Write};
 
+use crate::{
+    client::{ClientConfig, ClientHandle, ClientState},
+    config::DEFAULT_PORT,
+};
+
 use self::command::{Command, CommandType};
 
-use lan_mouse_ipc::{
+use super::{FrontendEvent, FrontendRequest};
-    AsyncFrontendEventReader, AsyncFrontendRequestWriter, ClientConfig, ClientHandle, ClientState,
-    FrontendEvent, FrontendRequest, IpcError, DEFAULT_PORT,
-};
 
 mod command;
 
-pub fn run() -> Result<(), IpcError> {
+pub fn run() -> Result<()> {
+    let Ok(stream) = super::wait_for_service() else {
+        return Err(anyhow!("Could not connect to lan-mouse-socket"));
+    };
+
     let runtime = tokio::runtime::Builder::new_current_thread()
         .enable_io()
         .enable_time()
         .build()?;
     runtime.block_on(LocalSet::new().run_until(async move {
-        let (rx, tx) = lan_mouse_ipc::connect_async().await?;
+        stream.set_nonblocking(true)?;
+        #[cfg(unix)]
+        let mut stream = tokio::net::UnixStream::from_std(stream)?;
+        #[cfg(windows)]
+        let mut stream = tokio::net::TcpStream::from_std(stream)?;
+        let (rx, tx) = stream.split();
+
         let mut cli = Cli::new(rx, tx);
         cli.run().await
     }))?;
     Ok(())
 }
 
-struct Cli {
+struct Cli<'a> {
     clients: Vec<(ClientHandle, ClientConfig, ClientState)>,
-    changed: Option<ClientHandle>,
+    rx: ReadHalf<'a>,
-    rx: AsyncFrontendEventReader,
+    tx: WriteHalf<'a>,
-    tx: AsyncFrontendRequestWriter,
 }
 
-impl Cli {
+impl<'a> Cli<'a> {
-    fn new(rx: AsyncFrontendEventReader, tx: AsyncFrontendRequestWriter) -> Cli {
+    fn new(rx: ReadHalf<'a>, tx: WriteHalf<'a>) -> Cli<'a> {
         Self {
             clients: vec![],
-            changed: None,
             rx,
             tx,
         }
     }
 
-    async fn run(&mut self) -> Result<(), IpcError> {
+    async fn run(&mut self) -> Result<()> {
         let stdin = tokio::io::stdin();
         let stdin = BufReader::new(stdin);
         let mut stdin = stdin.lines();
 
         /* initial state sync */
+        let request = FrontendRequest::Enumerate();
+        self.send_request(request).await?;
+
         self.clients = loop {
-            match self.rx.next().await {
+            let event = self.await_event().await?;
-                Some(Ok(e)) => {
+            if let FrontendEvent::Enumerate(clients) = event {
-                    if let FrontendEvent::Enumerate(clients) = e {
+                break clients;
-                        break clients;
-                    }
-                }
-                Some(Err(e)) => return Err(e),
-                None => return Ok(()),
             }
         };
 
@@ -79,23 +92,18 @@ impl Cli {
                     };
                     self.execute(cmd).await?;
                 }
-                event = self.rx.next() => {
+                event = self.await_event() => {
-                    if let Some(event) = event {
+                    let event = event?;
-                        self.handle_event(event?);
+                    self.handle_event(event);
-                    } else {
-                        break Ok(());
-                    }
                 }
             }
-            if let Some(handle) = self.changed.take() {
-                self.update_client(handle).await?;
-            }
         }
     }
 
-    async fn update_client(&mut self, handle: ClientHandle) -> Result<(), IpcError> {
+    async fn update_client(&mut self, handle: ClientHandle) -> Result<()> {
-        self.tx.request(FrontendRequest::GetState(handle)).await?;
+        self.send_request(FrontendRequest::GetState(handle)).await?;
-        while let Some(Ok(event)) = self.rx.next().await {
+        loop {
+            let event = self.await_event().await?;
             self.handle_event(event.clone());
             if let FrontendEvent::State(_, _, _) | FrontendEvent::NoSuchClient(_) = event {
                 break;
@@ -104,23 +112,22 @@ impl Cli {
         Ok(())
     }
 
-    async fn execute(&mut self, cmd: Command) -> Result<(), IpcError> {
+    async fn execute(&mut self, cmd: Command) -> Result<()> {
         match cmd {
             Command::None => {}
             Command::Connect(pos, host, port) => {
                 let request = FrontendRequest::Create;
-                self.tx.request(request).await?;
+                self.send_request(request).await?;
                 let handle = loop {
-                    if let Some(Ok(event)) = self.rx.next().await {
+                    let event = self.await_event().await?;
-                        match event {
+                    match event {
-                            FrontendEvent::Created(h, c, s) => {
+                        FrontendEvent::Created(h, c, s) => {
-                                self.clients.push((h, c, s));
+                            self.clients.push((h, c, s));
-                                break h;
+                            break h;
-                            }
+                        }
-                            _ => {
+                        _ => {
-                                self.handle_event(event);
+                            self.handle_event(event);
-                                continue;
+                            continue;
-                            }
                         }
                     }
                 };
@@ -129,36 +136,35 @@ impl Cli {
                     FrontendRequest::UpdatePort(handle, port.unwrap_or(DEFAULT_PORT)),
                     FrontendRequest::UpdatePosition(handle, pos),
                 ] {
-                    self.tx.request(request).await?;
+                    self.send_request(request).await?;
                 }
                 self.update_client(handle).await?;
             }
             Command::Disconnect(id) => {
-                self.tx.request(FrontendRequest::Delete(id)).await?;
+                self.send_request(FrontendRequest::Delete(id)).await?;
                 loop {
-                    if let Some(Ok(event)) = self.rx.next().await {
+                    let event = self.await_event().await?;
-                        self.handle_event(event.clone());
+                    self.handle_event(event.clone());
-                        if let FrontendEvent::Deleted(_) = event {
+                    if let FrontendEvent::Deleted(_) = event {
-                            self.handle_event(event);
+                        self.handle_event(event);
-                            break;
+                        break;
-                        }
                     }
                 }
             }
             Command::Activate(id) => {
-                self.tx.request(FrontendRequest::Activate(id, true)).await?;
+                self.send_request(FrontendRequest::Activate(id, true))
+                    .await?;
                 self.update_client(id).await?;
             }
             Command::Deactivate(id) => {
-                self.tx
+                self.send_request(FrontendRequest::Activate(id, false))
-                    .request(FrontendRequest::Activate(id, false))
                     .await?;
                 self.update_client(id).await?;
             }
             Command::List => {
-                self.tx.request(FrontendRequest::Enumerate()).await?;
+                self.send_request(FrontendRequest::Enumerate()).await?;
-                while let Some(e) = self.rx.next().await {
+                loop {
-                    let event = e?;
+                    let event = self.await_event().await?;
                     self.handle_event(event.clone());
                     if let FrontendEvent::Enumerate(_) = event {
                         break;
@@ -167,12 +173,12 @@ impl Cli {
             }
             Command::SetHost(handle, host) => {
                 let request = FrontendRequest::UpdateHostname(handle, Some(host.clone()));
-                self.tx.request(request).await?;
+                self.send_request(request).await?;
                 self.update_client(handle).await?;
             }
             Command::SetPort(handle, port) => {
                 let request = FrontendRequest::UpdatePort(handle, port.unwrap_or(DEFAULT_PORT));
-                self.tx.request(request).await?;
+                self.send_request(request).await?;
                 self.update_client(handle).await?;
             }
             Command::Help => {
@@ -209,7 +215,6 @@ impl Cli {
 
     fn handle_event(&mut self, event: FrontendEvent) {
         match event {
-            FrontendEvent::Changed(h) => self.changed = Some(h),
             FrontendEvent::Created(h, c, s) => {
                 eprint!("client added ({h}): ");
                 print_config(&c);
@@ -286,6 +291,23 @@ impl Cli {
             eprintln!();
         }
     }
+
+    async fn send_request(&mut self, request: FrontendRequest) -> io::Result<()> {
+        let json = serde_json::to_string(&request).unwrap();
+        let bytes = json.as_bytes();
+        let len = bytes.len();
+        self.tx.write_u64(len as u64).await?;
+        self.tx.write_all(bytes).await?;
+        Ok(())
+    }
+
+    async fn await_event(&mut self) -> Result<FrontendEvent> {
+        let len = self.rx.read_u64().await?;
+        let mut buf = vec![0u8; len as usize];
+        self.rx.read_exact(&mut buf).await?;
+        let event: FrontendEvent = serde_json::from_slice(&buf)?;
+        Ok(event)
+    }
 }
 
 fn prompt() -> io::Result<()> {

src/frontend/cli/command.rs

@@ -3,7 +3,7 @@ use std::{
     str::{FromStr, SplitWhitespace},
 };
 
-use lan_mouse_ipc::{ClientHandle, Position};
+use crate::client::{ClientHandle, Position};
 
 pub(super) enum CommandType {
     NoCommand,

src/frontend/gtk.rs

@@ -2,13 +2,16 @@ mod client_object;
 mod client_row;
 mod window;
 
-use std::{env, process, str};
+use std::{
+    env,
+    io::{ErrorKind, Read},
+    process, str,
+};
 
-use window::Window;
+use crate::frontend::gtk::window::Window;
-
-use lan_mouse_ipc::{FrontendEvent, FrontendRequest};
 
 use adw::Application;
+use endi::{Endian, ReadBytes};
 use gtk::{
     gdk::Display, glib::clone, prelude::*, subclass::prelude::ObjectSubclassIsExt, IconTheme,
 };
@@ -16,6 +19,8 @@ use gtk::{gio, glib, prelude::ApplicationExt};
 
 use self::client_object::ClientObject;
 
+use super::FrontendEvent;
+
 pub fn run() -> glib::ExitCode {
     log::debug!("running gtk frontend");
     #[cfg(windows)]
@@ -60,8 +65,15 @@ fn load_icons() {
 
 fn build_ui(app: &Application) {
     log::debug!("connecting to lan-mouse-socket");
-    let (mut frontend_rx, frontend_tx) = match lan_mouse_ipc::connect() {
+    let mut rx = match super::wait_for_service() {
-        Ok(conn) => conn,
+        Ok(stream) => stream,
+        Err(e) => {
+            log::error!("could not connect to lan-mouse-socket: {e}");
+            process::exit(1);
+        }
+    };
+    let tx = match rx.try_clone() {
+        Ok(sock) => sock,
         Err(e) => {
             log::error!("{e}");
             process::exit(1);
@@ -72,18 +84,35 @@ fn build_ui(app: &Application) {
     let (sender, receiver) = async_channel::bounded(10);
 
     gio::spawn_blocking(move || {
-        while let Some(e) = frontend_rx.next_event() {
+        match loop {
-            match e {
+            // read length
-                Ok(e) => sender.send_blocking(e).unwrap(),
+            let len = match rx.read_u64(Endian::Big) {
-                Err(e) => {
+                Ok(l) => l,
-                    log::error!("{e}");
+                Err(e) if e.kind() == ErrorKind::UnexpectedEof => break Ok(()),
-                    break;
+                Err(e) => break Err(e),
-                }
+            };
+
+            // read payload
+            let mut buf = vec![0u8; len as usize];
+            match rx.read_exact(&mut buf) {
+                Ok(_) => (),
+                Err(e) if e.kind() == ErrorKind::UnexpectedEof => break Ok(()),
+                Err(e) => break Err(e),
+            };
+
+            // parse json
+            let json = str::from_utf8(&buf).unwrap();
+            match serde_json::from_str(json) {
+                Ok(notify) => sender.send_blocking(notify).unwrap(),
+                Err(e) => log::error!("{e}"),
             }
+        } {
+            Ok(()) => {}
+            Err(e) => log::error!("{e}"),
         }
     });
 
-    let window = Window::new(app, frontend_tx);
+    let window = Window::new(app, tx);
 
     glib::spawn_future_local(clone!(
         #[weak]
@@ -92,9 +121,6 @@ fn build_ui(app: &Application) {
             loop {
                 let notify = receiver.recv().await.unwrap_or_else(|_| process::exit(1));
                 match notify {
-                    FrontendEvent::Changed(handle) => {
-                        window.request(FrontendRequest::GetState(handle));
-                    }
                     FrontendEvent::Created(handle, client, state) => {
                         window.new_client(handle, client, state);
                     }

src/frontend/gtk/client_object.rs

@@ -3,7 +3,7 @@ mod imp;
 use adw::subclass::prelude::*;
 use gtk::glib::{self, Object};
 
-use lan_mouse_ipc::{ClientConfig, ClientHandle, ClientState};
+use crate::client::{ClientConfig, ClientHandle, ClientState};
 
 glib::wrapper! {
     pub struct ClientObject(ObjectSubclass<imp::ClientObject>);

src/frontend/gtk/client_object/imp.rs

@@ -5,7 +5,7 @@ use gtk::glib;
 use gtk::prelude::*;
 use gtk::subclass::prelude::*;
 
-use lan_mouse_ipc::ClientHandle;
+use crate::client::ClientHandle;
 
 use super::ClientData;
 

src/frontend/gtk/client_row.rs

@@ -4,7 +4,7 @@ use adw::prelude::*;
 use adw::subclass::prelude::*;
 use gtk::glib::{self, Object};
 
-use lan_mouse_ipc::DEFAULT_PORT;
+use crate::config::DEFAULT_PORT;
 
 use super::ClientObject;
 

src/frontend/gtk/window.rs

@@ -1,7 +1,16 @@
 mod imp;
 
+use std::io::Write;
+
+#[cfg(unix)]
+use std::os::unix::net::UnixStream;
+
+#[cfg(windows)]
+use std::net::TcpStream;
+
 use adw::prelude::*;
 use adw::subclass::prelude::*;
+use endi::{Endian, WriteBytes};
 use glib::{clone, Object};
 use gtk::{
     gio,
@@ -9,12 +18,13 @@ use gtk::{
     ListBox, NoSelection,
 };
 
-use lan_mouse_ipc::{
+use crate::{
-    ClientConfig, ClientHandle, ClientState, FrontendRequest, FrontendRequestWriter, Position,
+    client::{ClientConfig, ClientHandle, ClientState, Position},
-    DEFAULT_PORT,
+    config::DEFAULT_PORT,
+    frontend::{gtk::client_object::ClientObject, FrontendRequest},
 };
 
-use super::{client_object::ClientObject, client_row::ClientRow};
+use super::client_row::ClientRow;
 
 glib::wrapper! {
     pub struct Window(ObjectSubclass<imp::Window>)
@@ -24,13 +34,13 @@ glib::wrapper! {
 }
 
 impl Window {
-    pub(crate) fn new(app: &adw::Application, conn: FrontendRequestWriter) -> Self {
+    pub(crate) fn new(
+        app: &adw::Application,
+        #[cfg(unix)] tx: UnixStream,
+        #[cfg(windows)] tx: TcpStream,
+    ) -> Self {
         let window: Self = Object::builder().property("application", app).build();
-        window
+        window.imp().stream.borrow_mut().replace(tx);
-            .imp()
-            .frontend_request_writer
-            .borrow_mut()
-            .replace(conn);
         window
     }
 
@@ -247,11 +257,7 @@ impl Window {
     }
 
     pub fn request_client_state(&self, client: &ClientObject) {
-        self.request_client_state_for(client.handle());
+        self.request(FrontendRequest::GetState(client.handle()));
-    }
-
-    pub fn request_client_state_for(&self, handle: ClientHandle) {
-        self.request(FrontendRequest::GetState(handle));
     }
 
     pub fn request_client_create(&self) {
@@ -286,10 +292,16 @@ impl Window {
         self.request(FrontendRequest::Delete(client.handle()));
     }
 
-    pub fn request(&self, request: FrontendRequest) {
+    pub fn request(&self, event: FrontendRequest) {
-        let mut requester = self.imp().frontend_request_writer.borrow_mut();
+        let json = serde_json::to_string(&event).unwrap();
-        let requester = requester.as_mut().unwrap();
+        log::debug!("requesting: {json}");
-        if let Err(e) = requester.request(request) {
+        let mut stream = self.imp().stream.borrow_mut();
+        let stream = stream.as_mut().unwrap();
+        let bytes = json.as_bytes();
+        if let Err(e) = stream.write_u64(Endian::Big, bytes.len() as u64) {
+            log::error!("error sending message: {e}");
+        };
+        if let Err(e) = stream.write(bytes) {
             log::error!("error sending message: {e}");
         };
     }

src/frontend/gtk/window/imp.rs

@@ -1,12 +1,17 @@
 use std::cell::{Cell, RefCell};
 
+#[cfg(windows)]
+use std::net::TcpStream;
+#[cfg(unix)]
+use std::os::unix::net::UnixStream;
+
 use adw::subclass::prelude::*;
 use adw::{prelude::*, ActionRow, PreferencesGroup, ToastOverlay};
 use glib::subclass::InitializingObject;
 use gtk::glib::clone;
 use gtk::{gdk, gio, glib, Button, CompositeTemplate, Entry, Label, ListBox};
 
-use lan_mouse_ipc::{FrontendRequestWriter, DEFAULT_PORT};
+use crate::config::DEFAULT_PORT;
 
 #[derive(CompositeTemplate, Default)]
 #[template(resource = "/de/feschber/LanMouse/window.ui")]
@@ -36,7 +41,10 @@ pub struct Window {
     #[template_child]
     pub input_capture_button: TemplateChild<Button>,
     pub clients: RefCell<Option<gio::ListStore>>,
-    pub frontend_request_writer: RefCell<Option<FrontendRequestWriter>>,
+    #[cfg(unix)]
+    pub stream: RefCell<Option<UnixStream>>,
+    #[cfg(windows)]
+    pub stream: RefCell<Option<TcpStream>>,
     pub port: Cell<u16>,
     pub capture_active: Cell<bool>,
     pub emulation_active: Cell<bool>,

src/lib.rs

@@ -5,3 +5,4 @@ pub mod server;
 
 pub mod capture_test;
 pub mod emulation_test;
+pub mod frontend;

src/main.rs

@@ -1,36 +1,10 @@
-use env_logger::Env;
+use anyhow::Result;
-use input_capture::InputCaptureError;
+use std::process::{self, Child, Command};
-use input_emulation::InputEmulationError;
-use lan_mouse::{
-    capture_test,
-    config::{Config, ConfigError, Frontend},
-    emulation_test,
-    server::{Server, ServiceError},
-};
-use lan_mouse_ipc::IpcError;
-use std::{
-    future::Future,
-    io,
-    process::{self, Child, Command},
-};
-use thiserror::Error;
-use tokio::task::LocalSet;
 
-#[derive(Debug, Error)]
+use env_logger::Env;
-enum LanMouseError {
+use lan_mouse::{capture_test, config::Config, emulation_test, frontend, server::Server};
-    #[error(transparent)]
+
-    Service(#[from] ServiceError),
+use tokio::task::LocalSet;
-    #[error(transparent)]
-    IpcError(#[from] IpcError),
-    #[error(transparent)]
-    Config(#[from] ConfigError),
-    #[error(transparent)]
-    Io(#[from] io::Error),
-    #[error(transparent)]
-    Capture(#[from] InputCaptureError),
-    #[error(transparent)]
-    Emulation(#[from] InputEmulationError),
-}
 
 pub fn main() {
     // init logging
@@ -43,24 +17,32 @@ pub fn main() {
     }
 }
 
-fn run() -> Result<(), LanMouseError> {
+pub fn start_service() -> Result<Child> {
+    let child = Command::new(std::env::current_exe()?)
+        .args(std::env::args().skip(1))
+        .arg("--daemon")
+        .spawn()?;
+    Ok(child)
+}
+
+pub fn run() -> Result<()> {
     // parse config file + cli args
     let config = Config::new()?;
     log::debug!("{config:?}");
     log::info!("release bind: {:?}", config.release_bind);
 
     if config.test_capture {
-        run_async(capture_test::run(config))?;
+        capture_test::run()?;
     } else if config.test_emulation {
-        run_async(emulation_test::run(config))?;
+        emulation_test::run()?;
     } else if config.daemon {
         // if daemon is specified we run the service
-        run_async(run_service(config))?;
+        run_service(config)?;
     } else {
         //  otherwise start the service as a child process and
         //  run a frontend
         let mut service = start_service()?;
-        run_frontend(&config)?;
+        frontend::run_frontend(&config)?;
         #[cfg(unix)]
         {
             // on unix we give the service a chance to terminate gracefully
@@ -73,14 +55,10 @@ fn run() -> Result<(), LanMouseError> {
         service.kill()?;
     }
 
-    Ok(())
+    anyhow::Ok(())
 }
 
-fn run_async<F, E>(f: F) -> Result<(), LanMouseError>
+fn run_service(config: Config) -> Result<()> {
-where
-    F: Future<Output = Result<(), E>>,
-    LanMouseError: From<E>,
-{
     // create single threaded tokio runtime
     let runtime = tokio::runtime::Builder::new_current_thread()
         .enable_io()
@@ -88,35 +66,15 @@ where
         .build()?;
 
     // run async event loop
-    Ok(runtime.block_on(LocalSet::new().run_until(f))?)
+    runtime.block_on(LocalSet::new().run_until(async {
-}
+        // run main loop
+        log::info!("Press {:?} to release the mouse", config.release_bind);
 
-fn start_service() -> Result<Child, io::Error> {
+        let mut server = Server::new(config);
-    let child = Command::new(std::env::current_exe()?)
+        server.run().await?;
-        .args(std::env::args().skip(1))
-        .arg("--daemon")
-        .spawn()?;
-    Ok(child)
-}
 
-async fn run_service(config: Config) -> Result<(), ServiceError> {
+        log::debug!("service exiting");
-    log::info!("Press {:?} to release the mouse", config.release_bind);
+        anyhow::Ok(())
-    Server::new(config).run().await?;
+    }))?;
-    log::info!("service exited!");
-    Ok(())
-}
-
-fn run_frontend(config: &Config) -> Result<(), IpcError> {
-    match config.frontend {
-        #[cfg(feature = "gtk")]
-        Frontend::Gtk => {
-            lan_mouse_gtk::run();
-        }
-        #[cfg(not(feature = "gtk"))]
-        Frontend::Gtk => panic!("gtk frontend requested but feature not enabled!"),
-        Frontend::Cli => {
-            lan_mouse_cli::run()?;
-        }
-    };
     Ok(())
 }

src/server.rs

@@ -1,27 +1,37 @@
 use capture_task::CaptureRequest;
 use emulation_task::EmulationRequest;
-use futures::StreamExt;
-use hickory_resolver::error::ResolveError;
-use local_channel::mpsc::{channel, Sender};
 use log;
 use std::{
     cell::{Cell, RefCell},
     collections::{HashSet, VecDeque},
-    io,
+    io::ErrorKind,
     net::{IpAddr, SocketAddr},
     rc::Rc,
 };
-use thiserror::Error;
+use tokio::{
-use tokio::{join, signal, sync::Notify};
+    io::ReadHalf,
+    join, signal,
+    sync::{
+        mpsc::{channel, Sender},
+        Notify,
+    },
+    task::JoinHandle,
+};
 use tokio_util::sync::CancellationToken;
 
-use crate::{client::ClientManager, config::Config, dns::DnsResolver};
+use crate::{
-
+    client::{ClientConfig, ClientHandle, ClientManager, ClientState, Position},
-use lan_mouse_ipc::{
+    config::Config,
-    AsyncFrontendListener, ClientConfig, ClientHandle, ClientState, FrontendEvent, FrontendRequest,
+    dns::DnsResolver,
-    ListenerCreationError, Position, Status,
+    frontend::{self, FrontendEvent, FrontendListener, FrontendRequest, Status},
 };
 
+#[cfg(unix)]
+use tokio::net::UnixStream;
+
+#[cfg(windows)]
+use tokio::net::TcpStream;
+
 mod capture_task;
 mod emulation_task;
 mod network_task;
@@ -35,17 +45,7 @@ enum State {
     Receiving,
     /// Entered the deadzone of another device but waiting
     /// for acknowledgement (Leave event) from the device
-    AwaitAck,
+    AwaitingLeave,
-}
-
-#[derive(Debug, Error)]
-pub enum ServiceError {
-    #[error(transparent)]
-    Dns(#[from] ResolveError),
-    #[error(transparent)]
-    Listen(#[from] ListenerCreationError),
-    #[error(transparent)]
-    Io(#[from] io::Error),
 }
 
 #[derive(Clone)]
@@ -58,6 +58,7 @@ pub struct Server {
     notifies: Rc<Notifies>,
     config: Rc<Config>,
     pending_frontend_events: Rc<RefCell<VecDeque<FrontendEvent>>>,
+    pending_dns_requests: Rc<RefCell<VecDeque<ClientHandle>>>,
     capture_status: Rc<Cell<Status>>,
     emulation_status: Rc<Cell<Status>>,
 }
@@ -69,6 +70,7 @@ struct Notifies {
     ping: Notify,
     port_changed: Notify,
     frontend_event_pending: Notify,
+    dns_request_pending: Notify,
     cancel: CancellationToken,
 }
 
@@ -112,32 +114,45 @@ impl Server {
             release_bind,
             notifies,
             pending_frontend_events: Rc::new(RefCell::new(VecDeque::new())),
+            pending_dns_requests: Rc::new(RefCell::new(VecDeque::new())),
             capture_status: Default::default(),
             emulation_status: Default::default(),
         }
     }
 
-    pub async fn run(&mut self) -> Result<(), ServiceError> {
+    pub async fn run(&mut self) -> anyhow::Result<()> {
         // create frontend communication adapter, exit if already running
-        let mut frontend = match AsyncFrontendListener::new().await {
+        let mut frontend = match FrontendListener::new().await {
-            Ok(f) => f,
+            Some(f) => f?,
-            Err(ListenerCreationError::AlreadyRunning) => {
+            None => {
                 log::info!("service already running, exiting");
                 return Ok(());
             }
-            e => e?,
         };
 
-        let (capture_tx, capture_rx) = channel(); /* requests for input capture */
+        let (capture_tx, capture_rx) = channel(1); /* requests for input capture */
-        let (emulation_tx, emulation_rx) = channel(); /* emulation requests */
+        let (emulation_tx, emulation_rx) = channel(1); /* emulation requests */
-        let (udp_recv_tx, udp_recv_rx) = channel(); /* udp receiver */
+        let (udp_recv_tx, udp_recv_rx) = channel(1); /* udp receiver */
-        let (udp_send_tx, udp_send_rx) = channel(); /* udp sender */
+        let (udp_send_tx, udp_send_rx) = channel(1); /* udp sender */
-        let (dns_tx, dns_rx) = channel(); /* dns requests */
+        let (request_tx, mut request_rx) = channel(1); /* frontend requests */
+        let (dns_tx, dns_rx) = channel(1); /* dns requests */
 
+        // udp task
         let network = network_task::new(self.clone(), udp_recv_tx.clone(), udp_send_rx).await?;
+
+        // input capture
         let capture = capture_task::new(self.clone(), capture_rx, udp_send_tx.clone());
-        let emulation =
+
-            emulation_task::new(self.clone(), emulation_rx, udp_recv_rx, udp_send_tx.clone());
+        // input emulation
+        let emulation = emulation_task::new(
+            self.clone(),
+            emulation_rx,
+            udp_recv_rx,
+            udp_send_tx.clone(),
+            capture_tx.clone(),
+        );
+
+        // create dns resolver
         let resolver = DnsResolver::new(dns_rx)?;
         let dns_task = tokio::task::spawn_local(resolver.run(self.clone()));
 
@@ -150,22 +165,30 @@ impl Server {
         );
 
         for handle in self.active_clients() {
-            dns_tx.send(handle).expect("channel closed");
+            self.request_dns(handle);
         }
 
+        log::info!("running service");
+
+        let mut join_handles = vec![];
+
         loop {
             tokio::select! {
-                request = frontend.next() => {
+                stream = frontend.accept() => {
-                    let request = match request {
+                    match stream {
-                        Some(Ok(r)) => r,
+                        Ok(s) => join_handles.push(handle_frontend_stream(self.notifies.cancel.clone(), s, request_tx.clone())),
-                        Some(Err(e)) => {
+                        Err(e) => log::warn!("error accepting frontend connection: {e}"),
-                            log::error!("error receiving request: {e}");
-                            continue;
-                        }
-                        None => break,
                     };
-                    log::debug!("handle frontend request: {request:?}");
+                    self.enumerate();
-                    self.handle_request(&capture_tx.clone(), &emulation_tx.clone(), request, &dns_tx);
+                    self.notify_frontend(FrontendEvent::EmulationStatus(self.emulation_status.get()));
+                    self.notify_frontend(FrontendEvent::CaptureStatus(self.capture_status.get()));
+                    self.notify_frontend(FrontendEvent::PortChanged(self.port.get(), None));
+                }
+                request = request_rx.recv() => {
+                    let request = request.expect("channel closed");
+                    log::debug!("received frontend request: {request:?}");
+                    self.handle_request(&capture_tx.clone(), &emulation_tx.clone(), request).await;
+                    log::debug!("handled frontend request");
                 }
                 _ = self.notifies.frontend_event_pending.notified() => {
                     while let Some(event) = {
@@ -176,6 +199,15 @@ impl Server {
                         frontend.broadcast(event).await;
                     }
                 },
+                _ = self.notifies.dns_request_pending.notified() => {
+                    while let Some(request) = {
+                        /* need to drop borrow before next iteration! */
+                        let request = self.pending_dns_requests.borrow_mut().pop_front();
+                        request
+                    } {
+                        dns_tx.send(request).await.expect("channel closed");
+                    }
+                }
                 _ = self.cancelled() => break,
                 r = signal::ctrl_c() => {
                     r.expect("failed to wait for CTRL+C");
@@ -186,7 +218,15 @@ impl Server {
 
         log::info!("terminating service");
 
+        assert!(!capture_tx.is_closed());
+        assert!(!emulation_tx.is_closed());
+        assert!(!udp_recv_tx.is_closed());
+        assert!(!udp_send_tx.is_closed());
+        assert!(!request_tx.is_closed());
+        assert!(!dns_tx.is_closed());
+
         self.cancel();
+        futures::future::join_all(join_handles).await;
         let _ = join!(capture, dns_task, emulation, network, ping);
 
         Ok(())
@@ -210,7 +250,6 @@ impl Server {
     }
 
     fn notify_capture(&self) {
-        log::info!("received capture enable request");
         self.notifies.capture.notify_waiters()
     }
 
@@ -219,7 +258,6 @@ impl Server {
     }
 
     fn notify_emulation(&self) {
-        log::info!("received emulation enable request");
         self.notifies.emulation.notify_waiters()
     }
 
@@ -246,7 +284,10 @@ impl Server {
     }
 
     pub(crate) fn client_updated(&self, handle: ClientHandle) {
-        self.notify_frontend(FrontendEvent::Changed(handle));
+        let state = self.client_manager.borrow().get(handle).cloned();
+        if let Some((config, state)) = state {
+            self.notify_frontend(FrontendEvent::State(handle, config, state));
+        }
     }
 
     fn active_clients(&self) -> Vec<ClientHandle> {
@@ -258,49 +299,55 @@ impl Server {
             .collect()
     }
 
-    fn handle_request(
+    fn request_dns(&self, handle: ClientHandle) {
+        self.pending_dns_requests.borrow_mut().push_back(handle);
+        self.notifies.dns_request_pending.notify_one();
+    }
+
+    async fn handle_request(
         &self,
         capture: &Sender<CaptureRequest>,
         emulate: &Sender<EmulationRequest>,
         event: FrontendRequest,
-        dns: &Sender<ClientHandle>,
     ) -> bool {
         log::debug!("frontend: {event:?}");
         match event {
-            FrontendRequest::EnableCapture => self.notify_capture(),
+            FrontendRequest::EnableCapture => {
-            FrontendRequest::EnableEmulation => self.notify_emulation(),
+                log::info!("received capture enable request");
+                self.notify_capture();
+            }
+            FrontendRequest::EnableEmulation => {
+                log::info!("received emulation enable request");
+                self.notify_emulation();
+            }
             FrontendRequest::Create => {
-                self.add_client();
+                let handle = self.add_client().await;
+                self.request_dns(handle);
             }
             FrontendRequest::Activate(handle, active) => {
                 if active {
-                    self.activate_client(capture, emulate, handle);
+                    self.activate_client(capture, emulate, handle).await;
                 } else {
-                    self.deactivate_client(capture, emulate, handle);
+                    self.deactivate_client(capture, emulate, handle).await;
                 }
             }
             FrontendRequest::ChangePort(port) => self.request_port_change(port),
             FrontendRequest::Delete(handle) => {
-                self.remove_client(capture, emulate, handle);
+                self.remove_client(capture, emulate, handle).await;
                 self.notify_frontend(FrontendEvent::Deleted(handle));
             }
             FrontendRequest::Enumerate() => self.enumerate(),
             FrontendRequest::GetState(handle) => self.broadcast_client(handle),
-            FrontendRequest::UpdateFixIps(handle, fix_ips) => self.update_fix_ips(handle, fix_ips),
+            FrontendRequest::UpdateFixIps(handle, fix_ips) => {
-            FrontendRequest::UpdateHostname(handle, host) => {
+                self.update_fix_ips(handle, fix_ips);
-                self.update_hostname(handle, host, dns)
+                self.request_dns(handle);
             }
+            FrontendRequest::UpdateHostname(handle, host) => self.update_hostname(handle, host),
             FrontendRequest::UpdatePort(handle, port) => self.update_port(handle, port),
             FrontendRequest::UpdatePosition(handle, pos) => {
-                self.update_pos(handle, capture, emulate, pos)
+                self.update_pos(handle, capture, emulate, pos).await;
-            }
-            FrontendRequest::ResolveDns(handle) => dns.send(handle).expect("channel closed"),
-            FrontendRequest::Sync => {
-                self.enumerate();
-                self.notify_frontend(FrontendEvent::EmulationStatus(self.emulation_status.get()));
-                self.notify_frontend(FrontendEvent::CaptureStatus(self.capture_status.get()));
-                self.notify_frontend(FrontendEvent::PortChanged(self.port.get(), None));
             }
+            FrontendRequest::ResolveDns(handle) => self.request_dns(handle),
         };
         false
     }
@@ -315,7 +362,7 @@ impl Server {
         self.notify_frontend(FrontendEvent::Enumerate(clients));
     }
 
-    fn add_client(&self) -> ClientHandle {
+    async fn add_client(&self) -> ClientHandle {
         let handle = self.client_manager.borrow_mut().add_client();
         log::info!("added client {handle}");
         let (c, s) = self.client_manager.borrow().get(handle).unwrap().clone();
@@ -323,40 +370,41 @@ impl Server {
         handle
     }
 
-    fn deactivate_client(
+    async fn deactivate_client(
         &self,
         capture: &Sender<CaptureRequest>,
         emulate: &Sender<EmulationRequest>,
         handle: ClientHandle,
     ) {
+        log::debug!("deactivating client {handle}");
         match self.client_manager.borrow_mut().get_mut(handle) {
-            None => return,
-            Some((_, s)) if !s.active => return,
             Some((_, s)) => s.active = false,
+            None => return,
         };
 
-        let _ = capture.send(CaptureRequest::Destroy(handle));
+        let _ = capture.send(CaptureRequest::Destroy(handle)).await;
-        let _ = emulate.send(EmulationRequest::Destroy(handle));
+        let _ = emulate.send(EmulationRequest::Destroy(handle)).await;
-        self.client_updated(handle);
+        log::debug!("deactivating client {handle} done");
-        log::info!("deactivated client {handle}");
     }
 
-    fn activate_client(
+    async fn activate_client(
         &self,
         capture: &Sender<CaptureRequest>,
         emulate: &Sender<EmulationRequest>,
         handle: ClientHandle,
     ) {
+        log::debug!("activating client");
         /* deactivate potential other client at this position */
         let pos = match self.client_manager.borrow().get(handle) {
-            None => return,
-            Some((_, s)) if s.active => return,
             Some((client, _)) => client.pos,
+            None => return,
         };
 
         let other = self.client_manager.borrow_mut().find_client(pos);
         if let Some(other) = other {
-            self.deactivate_client(capture, emulate, other);
+            if other != handle {
+                self.deactivate_client(capture, emulate, other).await;
+            }
         }
 
         /* activate the client */
@@ -367,15 +415,14 @@ impl Server {
         };
 
         /* notify emulation, capture and frontends */
-        let _ = capture.send(CaptureRequest::Create(handle, to_capture_pos(pos)));
+        let _ = capture
-        let _ = emulate.send(EmulationRequest::Create(handle));
+            .send(CaptureRequest::Create(handle, pos.into()))
-
+            .await;
-        self.client_updated(handle);
+        let _ = emulate.send(EmulationRequest::Create(handle)).await;
-
+        log::debug!("activating client {handle} done");
-        log::info!("activated client {handle} ({pos})");
     }
 
-    fn remove_client(
+    async fn remove_client(
         &self,
         capture: &Sender<CaptureRequest>,
         emulate: &Sender<EmulationRequest>,
@@ -391,8 +438,8 @@ impl Server {
         };
 
         if active {
-            let _ = capture.send(CaptureRequest::Destroy(handle));
+            let _ = capture.send(CaptureRequest::Destroy(handle)).await;
-            let _ = emulate.send(EmulationRequest::Destroy(handle));
+            let _ = emulate.send(EmulationRequest::Destroy(handle)).await;
         }
     }
 
@@ -407,7 +454,6 @@ impl Server {
             c.fix_ips = fix_ips;
         };
         self.update_ips(handle);
-        self.client_updated(handle);
     }
 
     pub(crate) fn update_dns_ips(&self, handle: ClientHandle, dns_ips: Vec<IpAddr>) {
@@ -415,7 +461,6 @@ impl Server {
             s.dns_ips = dns_ips;
         };
         self.update_ips(handle);
-        self.client_updated(handle);
     }
 
     fn update_ips(&self, handle: ClientHandle) {
@@ -429,12 +474,7 @@ impl Server {
         }
     }
 
-    fn update_hostname(
+    fn update_hostname(&self, handle: ClientHandle, hostname: Option<String>) {
-        &self,
-        handle: ClientHandle,
-        hostname: Option<String>,
-        dns: &Sender<ClientHandle>,
-    ) {
         let mut client_manager = self.client_manager.borrow_mut();
         let Some((c, s)) = client_manager.get_mut(handle) else {
             return;
@@ -443,13 +483,10 @@ impl Server {
         // hostname changed
         if c.hostname != hostname {
             c.hostname = hostname;
+            s.ips = HashSet::from_iter(c.fix_ips.iter().cloned());
             s.active_addr = None;
-            s.dns_ips.clear();
+            self.request_dns(handle);
-            drop(client_manager);
-            self.update_ips(handle);
-            dns.send(handle).expect("channel closed");
         }
-        self.client_updated(handle);
     }
 
     fn update_port(&self, handle: ClientHandle, port: u16) {
@@ -464,7 +501,7 @@ impl Server {
         }
     }
 
-    fn update_pos(
+    async fn update_pos(
         &self,
         handle: ClientHandle,
         capture: &Sender<CaptureRequest>,
@@ -478,19 +515,20 @@ impl Server {
             };
 
             let changed = c.pos != pos;
-            if changed {
-                log::info!("update pos {handle} {} -> {}", c.pos, pos);
-            }
             c.pos = pos;
             (changed, s.active)
         };
 
         // update state in event input emulator & input capture
         if changed {
-            self.deactivate_client(capture, emulate, handle);
             if active {
-                self.activate_client(capture, emulate, handle);
+                let _ = capture.send(CaptureRequest::Destroy(handle)).await;
+                let _ = emulate.send(EmulationRequest::Destroy(handle)).await;
             }
+            let _ = capture
+                .send(CaptureRequest::Create(handle, pos.into()))
+                .await;
+            let _ = emulate.send(EmulationRequest::Create(handle)).await;
         }
     }
 
@@ -523,7 +561,7 @@ impl Server {
         self.client_updated(handle);
     }
 
-    pub(crate) fn get_hostname(&self, handle: ClientHandle) -> Option<String> {
+    pub(crate) fn get_hostname(&self, handle: u64) -> Option<String> {
         self.client_manager
             .borrow_mut()
             .get_mut(handle)
@@ -539,12 +577,12 @@ impl Server {
         self.state.replace(state);
     }
 
-    fn set_active(&self, handle: Option<ClientHandle>) {
+    fn set_active(&self, handle: Option<u64>) {
         log::debug!("active client => {handle:?}");
         self.active_client.replace(handle);
     }
 
-    fn active_addr(&self, handle: ClientHandle) -> Option<SocketAddr> {
+    fn active_addr(&self, handle: u64) -> Option<SocketAddr> {
         self.client_manager
             .borrow()
             .get(handle)
@@ -552,11 +590,41 @@ impl Server {
     }
 }
 
-fn to_capture_pos(pos: Position) -> input_capture::Position {
+async fn listen_frontend(
-    match pos {
+    request_tx: Sender<FrontendRequest>,
-        Position::Left => input_capture::Position::Left,
+    #[cfg(unix)] mut stream: ReadHalf<UnixStream>,
-        Position::Right => input_capture::Position::Right,
+    #[cfg(windows)] mut stream: ReadHalf<TcpStream>,
-        Position::Top => input_capture::Position::Top,
+) {
-        Position::Bottom => input_capture::Position::Bottom,
+    use std::io;
+    loop {
+        let request = frontend::wait_for_request(&mut stream).await;
+        match request {
+            Ok(request) => {
+                let _ = request_tx.send(request).await;
+            }
+            Err(e) => {
+                if let Some(e) = e.downcast_ref::<io::Error>() {
+                    if e.kind() == ErrorKind::UnexpectedEof {
+                        return;
+                    }
+                }
+                log::error!("error reading frontend event: {e}");
+                return;
+            }
+        }
     }
 }
+
+fn handle_frontend_stream(
+    cancel: CancellationToken,
+    #[cfg(unix)] stream: ReadHalf<UnixStream>,
+    #[cfg(windows)] stream: ReadHalf<TcpStream>,
+    request_tx: Sender<FrontendRequest>,
+) -> JoinHandle<()> {
+    tokio::task::spawn_local(async move {
+        tokio::select! {
+            _ = listen_frontend(request_tx, stream) => {},
+            _ = cancel.cancelled() => {},
+        }
+    })
+}

src/server/capture_task.rs

@@ -1,16 +1,17 @@
 use futures::StreamExt;
-use lan_mouse_proto::ProtoEvent;
-use local_channel::mpsc::{Receiver, Sender};
 use std::net::SocketAddr;
 
-use tokio::{process::Command, task::JoinHandle};
+use tokio::{
-
+    process::Command,
-use input_capture::{
+    sync::mpsc::{Receiver, Sender},
-    self, CaptureError, CaptureEvent, CaptureHandle, InputCapture, InputCaptureError, Position,
+    task::JoinHandle,
 };
 
-use crate::server::State;
+use input_capture::{self, CaptureError, CaptureHandle, InputCapture, InputCaptureError, Position};
-use lan_mouse_ipc::{ClientHandle, Status};
+
+use input_event::Event;
+
+use crate::{client::ClientHandle, frontend::Status, server::State};
 
 use super::Server;
 
@@ -27,7 +28,7 @@ pub(crate) enum CaptureRequest {
 pub(crate) fn new(
     server: Server,
     capture_rx: Receiver<CaptureRequest>,
-    udp_send: Sender<(ProtoEvent, SocketAddr)>,
+    udp_send: Sender<(Event, SocketAddr)>,
 ) -> JoinHandle<()> {
     let backend = server.config.capture_backend.map(|b| b.into());
     tokio::task::spawn_local(capture_task(server, backend, udp_send, capture_rx))
@@ -36,7 +37,7 @@ pub(crate) fn new(
 async fn capture_task(
     server: Server,
     backend: Option<input_capture::Backend>,
-    sender_tx: Sender<(ProtoEvent, SocketAddr)>,
+    sender_tx: Sender<(Event, SocketAddr)>,
     mut notify_rx: Receiver<CaptureRequest>,
 ) {
     loop {
@@ -62,7 +63,7 @@ async fn capture_task(
 async fn do_capture(
     backend: Option<input_capture::Backend>,
     server: &Server,
-    sender_tx: &Sender<(ProtoEvent, SocketAddr)>,
+    sender_tx: &Sender<(Event, SocketAddr)>,
     notify_rx: &mut Receiver<CaptureRequest>,
 ) -> Result<(), InputCaptureError> {
     /* allow cancelling capture request */
@@ -86,7 +87,7 @@ async fn do_capture(
         )
     });
     for (handle, pos) in clients {
-        capture.create(handle, to_capture_pos(pos)).await?;
+        capture.create(handle, pos.into()).await?;
     }
 
     loop {
@@ -119,20 +120,17 @@ async fn do_capture(
 async fn handle_capture_event(
     server: &Server,
     capture: &mut InputCapture,
-    sender_tx: &Sender<(ProtoEvent, SocketAddr)>,
+    sender_tx: &Sender<(Event, SocketAddr)>,
-    event: (CaptureHandle, CaptureEvent),
+    event: (CaptureHandle, Event),
 ) -> Result<(), CaptureError> {
     let (handle, event) = event;
     log::trace!("({handle}) {event:?}");
 
     // capture started
-    if event == CaptureEvent::Begin {
+    if event == Event::Enter() {
-        // wait for remote to acknowlegde enter
+        server.set_state(State::AwaitingLeave);
-        server.set_state(State::AwaitAck);
         server.set_active(Some(handle));
-        // restart ping timer to release capture if unreachable
         server.restart_ping_timer();
-        // spawn enter hook cmd
         spawn_hook_command(server, handle);
     }
 
@@ -150,18 +148,14 @@ async fn handle_capture_event(
 
     if let Some(addr) = server.active_addr(handle) {
         let event = match server.get_state() {
-            State::Sending => match event {
+            State::Sending => event,
-                CaptureEvent::Begin => ProtoEvent::Enter(0),
-                CaptureEvent::Input(e) => ProtoEvent::Input(e),
-            },
             /* send additional enter events until acknowleged */
-            State::AwaitAck => ProtoEvent::Enter(0),
+            State::AwaitingLeave => Event::Enter(),
             /* released capture */
-            State::Receiving => ProtoEvent::Leave(0),
+            State::Receiving => Event::Disconnect(),
         };
-        sender_tx.send((event, addr)).expect("sender closed");
+        sender_tx.send((event, addr)).await.expect("sender closed");
-    };
+    }
-
     Ok(())
 }
 
@@ -195,12 +189,3 @@ fn spawn_hook_command(server: &Server, handle: ClientHandle) {
         }
     });
 }
-
-fn to_capture_pos(pos: lan_mouse_ipc::Position) -> input_capture::Position {
-    match pos {
-        lan_mouse_ipc::Position::Left => input_capture::Position::Left,
-        lan_mouse_ipc::Position::Right => input_capture::Position::Right,
-        lan_mouse_ipc::Position::Top => input_capture::Position::Top,
-        lan_mouse_ipc::Position::Bottom => input_capture::Position::Bottom,
-    }
-}

src/server/emulation_task.rs

@@ -1,16 +1,19 @@
-use local_channel::mpsc::{Receiver, Sender};
 use std::net::SocketAddr;
 
-use lan_mouse_proto::ProtoEvent;
+use tokio::{
-use tokio::task::JoinHandle;
+    sync::mpsc::{Receiver, Sender},
+    task::JoinHandle,
+};
 
-use lan_mouse_ipc::ClientHandle;
+use crate::{
-
+    client::{ClientHandle, ClientManager},
-use crate::{client::ClientManager, server::State};
+    frontend::Status,
+    server::State,
+};
 use input_emulation::{self, EmulationError, EmulationHandle, InputEmulation, InputEmulationError};
-use lan_mouse_ipc::Status;
+use input_event::Event;
 
-use super::{network_task::NetworkError, Server};
+use super::{network_task::NetworkError, CaptureRequest, Server};
 
 #[derive(Clone, Debug)]
 pub(crate) enum EmulationRequest {
@@ -25,21 +28,23 @@ pub(crate) enum EmulationRequest {
 pub(crate) fn new(
     server: Server,
     emulation_rx: Receiver<EmulationRequest>,
-    udp_rx: Receiver<Result<(ProtoEvent, SocketAddr), NetworkError>>,
+    udp_rx: Receiver<Result<(Event, SocketAddr), NetworkError>>,
-    sender_tx: Sender<(ProtoEvent, SocketAddr)>,
+    sender_tx: Sender<(Event, SocketAddr)>,
+    capture_tx: Sender<CaptureRequest>,
 ) -> JoinHandle<()> {
-    let emulation_task = emulation_task(server, emulation_rx, udp_rx, sender_tx);
+    let emulation_task = emulation_task(server, emulation_rx, udp_rx, sender_tx, capture_tx);
     tokio::task::spawn_local(emulation_task)
 }
 
 async fn emulation_task(
     server: Server,
     mut rx: Receiver<EmulationRequest>,
-    mut udp_rx: Receiver<Result<(ProtoEvent, SocketAddr), NetworkError>>,
+    mut udp_rx: Receiver<Result<(Event, SocketAddr), NetworkError>>,
-    sender_tx: Sender<(ProtoEvent, SocketAddr)>,
+    sender_tx: Sender<(Event, SocketAddr)>,
+    capture_tx: Sender<CaptureRequest>,
 ) {
     loop {
-        if let Err(e) = do_emulation(&server, &mut rx, &mut udp_rx, &sender_tx).await {
+        if let Err(e) = do_emulation(&server, &mut rx, &mut udp_rx, &sender_tx, &capture_tx).await {
             log::warn!("input emulation exited: {e}");
         }
         server.set_emulation_status(Status::Disabled);
@@ -61,8 +66,9 @@ async fn emulation_task(
 async fn do_emulation(
     server: &Server,
     rx: &mut Receiver<EmulationRequest>,
-    udp_rx: &mut Receiver<Result<(ProtoEvent, SocketAddr), NetworkError>>,
+    udp_rx: &mut Receiver<Result<(Event, SocketAddr), NetworkError>>,
-    sender_tx: &Sender<(ProtoEvent, SocketAddr)>,
+    sender_tx: &Sender<(Event, SocketAddr)>,
+    capture_tx: &Sender<CaptureRequest>,
 ) -> Result<(), InputEmulationError> {
     let backend = server.config.emulation_backend.map(|b| b.into());
     log::info!("creating input emulation...");
@@ -78,7 +84,7 @@ async fn do_emulation(
         emulation.create(handle).await;
     }
 
-    let res = do_emulation_session(server, &mut emulation, rx, udp_rx, sender_tx).await;
+    let res = do_emulation_session(server, &mut emulation, rx, udp_rx, sender_tx, capture_tx).await;
     emulation.terminate().await; // manual drop
     res
 }
@@ -87,8 +93,9 @@ async fn do_emulation_session(
     server: &Server,
     emulation: &mut InputEmulation,
     rx: &mut Receiver<EmulationRequest>,
-    udp_rx: &mut Receiver<Result<(ProtoEvent, SocketAddr), NetworkError>>,
+    udp_rx: &mut Receiver<Result<(Event, SocketAddr), NetworkError>>,
-    sender_tx: &Sender<(ProtoEvent, SocketAddr)>,
+    sender_tx: &Sender<(Event, SocketAddr)>,
+    capture_tx: &Sender<CaptureRequest>,
 ) -> Result<(), InputEmulationError> {
     let mut last_ignored = None;
 
@@ -102,7 +109,7 @@ async fn do_emulation_session(
                         continue;
                     }
                 };
-                handle_incoming_event(server, emulation, sender_tx, &mut last_ignored, udp_event).await?;
+                handle_udp_rx(server, capture_tx, emulation, sender_tx, &mut last_ignored, udp_event).await?;
             }
             emulate_event = rx.recv() => {
                 match emulate_event.expect("channel closed") {
@@ -116,12 +123,13 @@ async fn do_emulation_session(
     }
 }
 
-async fn handle_incoming_event(
+async fn handle_udp_rx(
     server: &Server,
+    capture_tx: &Sender<CaptureRequest>,
     emulate: &mut InputEmulation,
-    sender_tx: &Sender<(ProtoEvent, SocketAddr)>,
+    sender_tx: &Sender<(Event, SocketAddr)>,
     last_ignored: &mut Option<SocketAddr>,
-    event: (ProtoEvent, SocketAddr),
+    event: (Event, SocketAddr),
 ) -> Result<(), EmulationError> {
     let (event, addr) = event;
 
@@ -135,26 +143,55 @@ async fn handle_incoming_event(
     };
 
     match (event, addr) {
-        (ProtoEvent::Pong, _) => { /* ignore pong events */ }
+        (Event::Pong(), _) => { /* ignore pong events */ }
-        (ProtoEvent::Ping, addr) => {
+        (Event::Ping(), addr) => {
-            let _ = sender_tx.send((ProtoEvent::Pong, addr));
+            let _ = sender_tx.send((Event::Pong(), addr)).await;
         }
-        (ProtoEvent::Leave(_), _) => emulate.release_keys(handle).await?,
+        (Event::Disconnect(), _) => emulate.release_keys(handle).await?,
-        (ProtoEvent::Ack(_), _) => server.set_state(State::Sending),
+        (event, addr) => {
-        (ProtoEvent::Enter(_), _) => {
+            // tell clients that we are ready to receive events
-            server.set_state(State::Receiving);
+            if let Event::Enter() = event {
-            sender_tx
+                let _ = sender_tx.send((Event::Leave(), addr)).await;
-                .send((ProtoEvent::Ack(0), addr))
+            }
-                .expect("no channel")
+
-        }
+            match server.state.get() {
-        (ProtoEvent::Input(e), _) => {
+                State::Sending => {
-            if let State::Receiving = server.get_state() {
+                    if let Event::Leave() = event {
-                log::trace!("{event} => emulate");
+                        // ignore additional leave events that may
-                emulate.consume(e, handle).await?;
+                        // have been sent for redundancy
-                let has_pressed_keys = emulate.has_pressed_keys(handle);
+                    } else {
-                server.update_pressed_keys(handle, has_pressed_keys);
+                        // upon receiving any event, we go back to receiving mode
-                if has_pressed_keys {
+                        server.state.replace(State::Receiving);
-                    server.restart_ping_timer();
+                        let _ = capture_tx.send(CaptureRequest::Release).await;
+                        log::trace!("STATE ===> Receiving");
+                    }
+                }
+                State::Receiving => {
+                    log::trace!("{event} => emulate");
+                    emulate.consume(event, handle).await?;
+                    let has_pressed_keys = emulate.has_pressed_keys(handle);
+                    server.update_pressed_keys(handle, has_pressed_keys);
+                    if has_pressed_keys {
+                        server.restart_ping_timer();
+                    }
+                }
+                State::AwaitingLeave => {
+                    // we just entered the deadzone of a client, so
+                    // we need to ignore events that may still
+                    // be on the way until a leave event occurs
+                    // telling us the client registered the enter
+                    if let Event::Leave() = event {
+                        server.state.replace(State::Sending);
+                        log::trace!("STATE ===> Sending");
+                    }
+
+                    // entering a client that is waiting for a leave
+                    // event should still be possible
+                    if let Event::Enter() = event {
+                        server.state.replace(State::Receiving);
+                        let _ = capture_tx.send(CaptureRequest::Release).await;
+                        log::trace!("STATE ===> Receiving");
+                    }
                 }
             }
         }

src/server/network_task.rs

@@ -1,16 +1,20 @@
-use local_channel::mpsc::{Receiver, Sender};
 use std::{io, net::SocketAddr};
 
 use thiserror::Error;
-use tokio::{net::UdpSocket, task::JoinHandle};
+use tokio::{
+    net::UdpSocket,
+    sync::mpsc::{Receiver, Sender},
+    task::JoinHandle,
+};
+
+use input_event::{Event, ProtocolError};
 
 use super::Server;
-use lan_mouse_proto::{ProtoEvent, ProtocolError};
 
 pub(crate) async fn new(
     server: Server,
-    udp_recv_tx: Sender<Result<(ProtoEvent, SocketAddr), NetworkError>>,
+    udp_recv_tx: Sender<Result<(Event, SocketAddr), NetworkError>>,
-    udp_send_rx: Receiver<(ProtoEvent, SocketAddr)>,
+    udp_send_rx: Receiver<(Event, SocketAddr)>,
 ) -> io::Result<JoinHandle<()>> {
     // bind the udp socket
     let listen_addr = SocketAddr::new("0.0.0.0".parse().unwrap(), server.port.get());
@@ -58,15 +62,15 @@ async fn update_port(server: &Server, socket: &mut UdpSocket) {
 
 async fn udp_receiver(
     socket: &UdpSocket,
-    receiver_tx: &Sender<Result<(ProtoEvent, SocketAddr), NetworkError>>,
+    receiver_tx: &Sender<Result<(Event, SocketAddr), NetworkError>>,
 ) {
     loop {
         let event = receive_event(socket).await;
-        receiver_tx.send(event).expect("channel closed");
+        receiver_tx.send(event).await.expect("channel closed");
     }
 }
 
-async fn udp_sender(socket: &UdpSocket, rx: &mut Receiver<(ProtoEvent, SocketAddr)>) {
+async fn udp_sender(socket: &UdpSocket, rx: &mut Receiver<(Event, SocketAddr)>) {
     loop {
         let (event, addr) = rx.recv().await.expect("channel closed");
         if let Err(e) = send_event(socket, event, addr) {
@@ -83,17 +87,16 @@ pub(crate) enum NetworkError {
     Io(#[from] io::Error),
 }
 
-async fn receive_event(socket: &UdpSocket) -> Result<(ProtoEvent, SocketAddr), NetworkError> {
+async fn receive_event(socket: &UdpSocket) -> Result<(Event, SocketAddr), NetworkError> {
-    let mut buf = [0u8; lan_mouse_proto::MAX_EVENT_SIZE];
+    let mut buf = vec![0u8; 22];
-    let (_len, src) = socket.recv_from(&mut buf).await?;
+    let (_amt, src) = socket.recv_from(&mut buf).await?;
-    let event = ProtoEvent::try_from(buf)?;
+    Ok((Event::try_from(buf)?, src))
-    Ok((event, src))
 }
 
-fn send_event(sock: &UdpSocket, e: ProtoEvent, addr: SocketAddr) -> Result<usize, NetworkError> {
+fn send_event(sock: &UdpSocket, e: Event, addr: SocketAddr) -> Result<usize, NetworkError> {
     log::trace!("{:20} ------>->->-> {addr}", e.to_string());
-    let (data, len): ([u8; lan_mouse_proto::MAX_EVENT_SIZE], usize) = e.into();
+    let data: Vec<u8> = (&e).into();
     // When udp blocks, we dont want to block the event loop.
     // Dropping events is better than potentially crashing the input capture.
-    Ok(sock.try_send_to(&data[..len], addr)?)
+    Ok(sock.try_send_to(&data, addr)?)
 }

src/server/ping_task.rs

@@ -1,10 +1,10 @@
 use std::{net::SocketAddr, time::Duration};
 
-use lan_mouse_proto::ProtoEvent;
+use tokio::{sync::mpsc::Sender, task::JoinHandle};
-use local_channel::mpsc::Sender;
-use tokio::task::JoinHandle;
 
-use lan_mouse_ipc::ClientHandle;
+use input_event::Event;
+
+use crate::client::ClientHandle;
 
 use super::{capture_task::CaptureRequest, emulation_task::EmulationRequest, Server, State};
 
@@ -12,7 +12,7 @@ const MAX_RESPONSE_TIME: Duration = Duration::from_millis(500);
 
 pub(crate) fn new(
     server: Server,
-    sender_ch: Sender<(ProtoEvent, SocketAddr)>,
+    sender_ch: Sender<(Event, SocketAddr)>,
     emulate_notify: Sender<EmulationRequest>,
     capture_notify: Sender<CaptureRequest>,
 ) -> JoinHandle<()> {
@@ -27,7 +27,7 @@ pub(crate) fn new(
 
 async fn ping_task(
     server: &Server,
-    sender_ch: Sender<(ProtoEvent, SocketAddr)>,
+    sender_ch: Sender<(Event, SocketAddr)>,
     emulate_notify: Sender<EmulationRequest>,
     capture_notify: Sender<CaptureRequest>,
 ) {
@@ -86,7 +86,7 @@ async fn ping_task(
 
             // ping clients
             for addr in ping_addrs {
-                if sender_ch.send((ProtoEvent::Ping, addr)).is_err() {
+                if sender_ch.send((Event::Ping(), addr)).await.is_err() {
                     break;
                 }
             }
@@ -123,14 +123,14 @@ async fn ping_task(
             if receiving {
                 for h in unresponsive_clients {
                     log::warn!("device not responding, releasing keys!");
-                    let _ = emulate_notify.send(EmulationRequest::ReleaseKeys(h));
+                    let _ = emulate_notify.send(EmulationRequest::ReleaseKeys(h)).await;
                 }
             } else {
                 // release pointer if the active client has not responded
                 if !unresponsive_clients.is_empty() {
                     log::warn!("client not responding, releasing pointer!");
                     server.state.replace(State::Receiving);
-                    let _ = capture_notify.send(CaptureRequest::Release);
+                    let _ = capture_notify.send(CaptureRequest::Release).await;
                 }
             }
         }