update cachix and disable magic nix-cache

magic nix cache seems to hang forever.

.github/workflows/cachix.yml

@@ -1,40 +1,46 @@
-name: Binary Cache
+name: Nix Binary Cache
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+  workflow_dispatch:
 
-on: [push, pull_request, workflow_dispatch]
 jobs:
   nix:
     strategy:
       matrix:
-       os: 
-        - ubuntu-latest
-        - macos-13
-        - macos-14
+        os:
+          - ubuntu-latest
+          - macos-15-intel
+          - macos-latest
     name: "Build"
-    runs-on: ${{ matrix.os }} 
+    runs-on: ${{ matrix.os }}
     steps:
-    - name: Checkout
-      uses: actions/checkout@v4
-      with:
-        submodules: recursive
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
-    - uses: DeterminateSystems/nix-installer-action@main
-      with:
-        logger: pretty
-    - uses: DeterminateSystems/magic-nix-cache-action@main
-    - uses: cachix/cachix-action@v14
-      with:
-        name: lan-mouse
-        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+      # - uses: DeterminateSystems/nix-installer-action@main
+      #   with:
+      #     logger: pretty
+      # - uses: DeterminateSystems/magic-nix-cache-action@main
+      - uses: cachix/install-nix-action@v31
+      - uses: cachix/cachix-action@v16
+        with:
+          name: lan-mouse
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
 
-    - name: Build lan-mouse (x86_64-linux)
-      if: matrix.os == 'ubuntu-latest'
-      run: nix build --print-build-logs --show-trace .#packages.x86_64-linux.lan-mouse
+      - name: Build lan-mouse (x86_64-linux)
+        if: matrix.os == 'ubuntu-latest'
+        run: nix build --print-build-logs --show-trace .#packages.x86_64-linux.lan-mouse
 
-    - name: Build lan-mouse (x86_64-darwin)
-      if: matrix.os == 'macos-13'
-      run: nix build --print-build-logs --show-trace .#packages.x86_64-darwin.lan-mouse
-
-    - name: Build lan-mouse (aarch64-darwin)
-      if: matrix.os == 'macos-14'
-      run: nix build --print-build-logs --show-trace .#packages.aarch64-darwin.lan-mouse
+      - name: Build lan-mouse (x86_64-darwin)
+        if: matrix.os == 'macos-15-intel'
+        run: nix build --print-build-logs --show-trace .#packages.x86_64-darwin.lan-mouse
 
+      - name: Build lan-mouse (aarch64-darwin)
+        if: matrix.os == 'macos-latest'
+        run: nix build --print-build-logs --show-trace .#packages.aarch64-darwin.lan-mouse

.github/workflows/pre-release.yml

@@ -11,7 +11,7 @@ env:
 
 jobs:
   linux-release-build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v4
     - name: install dependencies
@@ -80,40 +80,64 @@ jobs:
         path: lan-mouse-windows.zip
 
   macos-release-build:
-    runs-on: macos-13
+    runs-on: macos-15-intel
     steps:
     - uses: actions/checkout@v4
     - name: install dependencies
-      run: brew install gtk4 libadwaita
+      run: brew install gtk4 libadwaita imagemagick
     - name: Release Build
       run: |
         cargo build --release
         cp target/release/lan-mouse lan-mouse-macos-intel
+    - name: Make icns
+      run: scripts/makeicns.sh
+    - name: Install cargo bundle
+      run: cargo install cargo-bundle
+    - name: Bundle
+      run: |
+        cargo bundle --release
+        scripts/copy-macos-dylib.sh "target/release/bundle/osx/Lan Mouse.app/Contents/MacOS/lan-mouse"
+    - name: Zip bundle
+      run: |
+        cd target/release/bundle/osx
+        zip -r "lan-mouse-macos-intel.zip" "Lan Mouse.app"
     - name: Upload build artifact
       uses: actions/upload-artifact@v4
       with:
         name: lan-mouse-macos-intel
-        path: lan-mouse-macos-intel
+        path: target/release/bundle/osx/lan-mouse-macos-intel.zip
 
   macos-aarch64-release-build:
     runs-on: macos-14
     steps:
     - uses: actions/checkout@v4
     - name: install dependencies
-      run: brew install gtk4 libadwaita
+      run: brew install gtk4 libadwaita imagemagick
     - name: Release Build
       run: |
         cargo build --release
         cp target/release/lan-mouse lan-mouse-macos-aarch64
+    - name: Make icns
+      run: scripts/makeicns.sh
+    - name: Install cargo bundle
+      run: cargo install cargo-bundle
+    - name: Bundle
+      run: |
+        cargo bundle --release
+        scripts/copy-macos-dylib.sh "target/release/bundle/osx/Lan Mouse.app/Contents/MacOS/lan-mouse"
+    - name: Zip bundle
+      run: |
+        cd target/release/bundle/osx
+        zip -r "lan-mouse-macos-aarch64.zip" "Lan Mouse.app"
     - name: Upload build artifact
       uses: actions/upload-artifact@v4
       with:
         name: lan-mouse-macos-aarch64
-        path: lan-mouse-macos-aarch64
+        path: target/release/bundle/osx/lan-mouse-macos-aarch64.zip
 
   pre-release:
     name: "Pre Release"
-    needs: [windows-release-build, linux-release-build, macos-release-build]
+    needs: [windows-release-build, linux-release-build, macos-release-build, macos-aarch64-release-build]
     runs-on: "ubuntu-latest"
     steps:
     - name: Download build artifacts
@@ -127,6 +151,6 @@ jobs:
         title: "Development Build"
         files: |
           lan-mouse-linux/lan-mouse
-          lan-mouse-macos-intel/lan-mouse-macos-intel
-          lan-mouse-macos-aarch64/lan-mouse-macos-aarch64
+          lan-mouse-macos-intel/lan-mouse-macos-intel.zip
+          lan-mouse-macos-aarch64/lan-mouse-macos-aarch64.zip
           lan-mouse-windows/lan-mouse-windows.zip

.github/workflows/rust.yml

@@ -10,125 +10,87 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  build-linux:
-
+  fmt:
+    name: Formatting
     runs-on: ubuntu-latest
-
     steps:
-    - uses: actions/checkout@v4
-    - name: install dependencies
-      run: |
-        sudo apt-get update
-        sudo apt-get install libx11-dev libxtst-dev
-        sudo apt-get install libadwaita-1-dev libgtk-4-dev
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
-    - name: Check Formatting
-      run: cargo fmt --check
-    - name: Clippy
-      run: cargo clippy --all-features --all-targets -- --deny warnings
-    - name: Upload build artifact
-      uses: actions/upload-artifact@v4
-      with:
-        name: lan-mouse
-        path: target/debug/lan-mouse
-
-  build-windows:
-
-    runs-on: windows-latest
+      - uses: actions/checkout@v4
+      - name: cargo fmt
+        run: cargo fmt --check
 
+  ci:
+    name: ${{ matrix.job }} ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - windows-latest
+          - macos-latest
+          - macos-15-intel
+        job:
+          - build
+          - check
+          - clippy
+          - test
     steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-python@v5
-      with:
-        python-version: '3.11'
-    # needed for cache restore
-    - name: create gtk dir
-      run: mkdir C:\gtk-build\gtk\x64\release
-    - uses: actions/cache@v3
-      id: cache
-      with:
-        path: c:/gtk-build/gtk/x64/release/**
-        key: gtk-windows-build
-        restore-keys: gtk-windows-build
-    - name: Update path
-      run: |
-        echo "PKG_CONFIG=C:\gtk-build\gtk\x64\release\bin\pkgconf.exe" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
-        echo "C:\pkg-config-lite-0.28-1\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
-        echo "C:\gtk-build\gtk\x64\release\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
-        echo $env:GITHUB_PATH
-        echo $env:PATH
-    - name: Install dependencies
-      if: steps.cache.outputs.cache-hit != 'true'
-      run: |
-        # choco install msys2
-        # choco install visualstudio2022-workload-vctools
-        # choco install pkgconfiglite
-        py -m venv .venv
-        .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"
-        gvsbuild build --msys-dir=C:\msys64 gtk4 libadwaita librsvg
-        Move-Item "C:\Program Files\Git\usr\notbin" "C:\Program Files\Git\usr\bin"
-        Move-Item "C:\Program Files\Git\notbin" "C:\Program Files\Git\bin"
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
-    - name: Check Formatting
-      run: cargo fmt --check
-    - name: Clippy
-      run: cargo clippy --all-features --all-targets -- --deny warnings
-    - name: Copy Gtk Dlls
-      run: Get-Childitem -Path "C:\\gtk-build\\gtk\\x64\\release\\bin\\*.dll" -File -Recurse | Copy-Item -Destination "target\\debug"
-    - name: Upload build artifact
-      uses: actions/upload-artifact@v4
-      with:
-        name: lan-mouse-windows
-        path: |
-          target/debug/lan-mouse.exe
-          target/debug/*.dll
+      - uses: actions/checkout@v4
+      - uses: Swatinem/rust-cache@v2
+      - name: Install Linux deps
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt-get install libx11-dev libxtst-dev libadwaita-1-dev libgtk-4-dev
+      - name: Install macOS dependencies
+        if: runner.os == 'macOS'
+        run: brew install gtk4 libadwaita imagemagick
+      - name: Install Windows Dependencies - create gtk dir
+        if: runner.os == 'Windows'
+        run: mkdir C:\gtk-build\gtk\x64\release
+      - name: Install Windows Dependencies - install gtk from cache
+        uses: actions/cache@v3
+        if: runner.os == 'Windows'
+        id: cache
+        with:
+          path: c:/gtk-build/gtk/x64/release/**
+          key: gtk-windows-build
+          restore-keys: gtk-windows-build
+      - name: Install Windows Dependencies - update PATH
+        if: runner.os == 'Windows'
+        run: |
+          echo "PKG_CONFIG=C:\gtk-build\gtk\x64\release\bin\pkgconf.exe" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          echo "C:\pkg-config-lite-0.28-1\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+          echo "C:\gtk-build\gtk\x64\release\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+          echo $env:GITHUB_PATH
+          echo $env:PATH
+      - name: Install Windows dependencies - build gtk
+        if: runner.os == 'Windows' && steps.cache.outputs.cache-hit != 'true'
+        run: |
+          # choco install msys2
+          # choco install visualstudio2022-workload-vctools
+          # choco install pkgconfiglite
+          py -m venv .venv
+          .venv\Scripts\activate.ps1
+          py -m pip install gvsbuild
+          gvsbuild build --msys-dir=C:\msys64 gtk4 libadwaita librsvg
+      - name: cargo build
+        if: matrix.job == 'build'
+        run: cargo check --workspace --all-targets --all-features
 
-  build-macos:
-    runs-on: macos-13
-    steps:
-    - uses: actions/checkout@v4
-    - name: install dependencies
-      run: brew install gtk4 libadwaita
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
-    - name: Check Formatting
-      run: cargo fmt --check
-    - name: Clippy
-      run: cargo clippy --all-features --all-targets -- --deny warnings
-    - name: Upload build artifact
-      uses: actions/upload-artifact@v4
-      with:
-        name: lan-mouse-macos
-        path: target/debug/lan-mouse
+      - name: cargo check
+        if: matrix.job == 'check'
+        run: cargo check --workspace --all-targets --all-features
 
-  build-macos-aarch64:
-    runs-on: macos-14
-    steps:
-    - uses: actions/checkout@v4
-    - name: install dependencies
-      run: brew install gtk4 libadwaita
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
-    - name: Check Formatting
-      run: cargo fmt --check
-    - name: Clippy
-      run: cargo clippy --all-features --all-targets -- --deny warnings
-    - name: Upload build artifact
-      uses: actions/upload-artifact@v4
-      with:
-        name: lan-mouse-macos-aarch64
-        path: target/debug/lan-mouse
+      - name: cargo test
+        if: matrix.job == 'test'
+        run: cargo test --workspace --all-features
+
+      - name: cargo clippy
+        if: matrix.job == 'clippy'
+        run: cargo clippy --workspace --all-targets --all-features -- -D warnings
+
+      - uses: clechasseur/rs-clippy-check@v4
+        if: matrix.job == 'clippy'
+        with:
+          args: --workspace --all-targets --all-features

.github/workflows/tagged-release.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   linux-release-build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v4
     - name: install dependencies
@@ -76,40 +76,64 @@ jobs:
         path: lan-mouse-windows.zip
 
   macos-release-build:
-    runs-on: macos-13
+    runs-on: macos-15-intel
     steps:
     - uses: actions/checkout@v4
     - name: install dependencies
-      run: brew install gtk4 libadwaita
+      run: brew install gtk4 libadwaita imagemagick
     - name: Release Build
       run: |
         cargo build --release
         cp target/release/lan-mouse lan-mouse-macos-intel
+    - name: Make icns
+      run: scripts/makeicns.sh
+    - name: Install cargo bundle
+      run: cargo install cargo-bundle
+    - name: Bundle
+      run: |
+        cargo bundle --release
+        scripts/copy-macos-dylib.sh "target/release/bundle/osx/Lan Mouse.app/Contents/MacOS/lan-mouse"
+    - name: Zip bundle
+      run: |
+        cd target/release/bundle/osx
+        zip -r "lan-mouse-macos-intel.zip" "Lan Mouse.app"
     - name: Upload build artifact
       uses: actions/upload-artifact@v4
       with:
-        name: lan-mouse-macos-intel
-        path: lan-mouse-macos-intel
+        name: lan-mouse-macos-intel.zip
+        path: target/release/bundle/osx/lan-mouse-macos-intel.zip
 
   macos-aarch64-release-build:
     runs-on: macos-14
     steps:
     - uses: actions/checkout@v4
     - name: install dependencies
-      run: brew install gtk4 libadwaita
+      run: brew install gtk4 libadwaita imagemagick
     - name: Release Build
       run: |
         cargo build --release
         cp target/release/lan-mouse lan-mouse-macos-aarch64
+    - name: Make icns
+      run: scripts/makeicns.sh
+    - name: Install cargo bundle
+      run: cargo install cargo-bundle
+    - name: Bundle
+      run: |
+        cargo bundle --release
+        scripts/copy-macos-dylib.sh "target/release/bundle/osx/Lan Mouse.app/Contents/MacOS/lan-mouse"
+    - name: Zip bundle
+      run: |
+        cd target/release/bundle/osx
+        zip -r "lan-mouse-macos-aarch64.zip" "Lan Mouse.app"
     - name: Upload build artifact
       uses: actions/upload-artifact@v4
       with:
-        name: lan-mouse-macos-aarch64
-        path: lan-mouse-macos-aarch64
+        name: lan-mouse-macos-aarch64.zip
+        path: target/release/bundle/osx/lan-mouse-macos-aarch64.zip
 
   tagged-release:
     name: "Tagged Release"
-    needs: [windows-release-build, linux-release-build, macos-release-build]
+    needs: [windows-release-build, linux-release-build, macos-release-build, macos-aarch64-release-build]
     runs-on: "ubuntu-latest"
     steps:
     - name: Download build artifacts
@@ -121,6 +145,6 @@ jobs:
         prerelease: false
         files: |
           lan-mouse-linux/lan-mouse
-          lan-mouse-macos-intel/lan-mouse-macos-intel
-          lan-mouse-macos-aarch64/lan-mouse-macos-aarch64
+          lan-mouse-macos-intel/lan-mouse-macos-intel.zip
+          lan-mouse-macos-aarch64/lan-mouse-macos-aarch64.zip
           lan-mouse-windows/lan-mouse-windows.zip

.gitignore

@@ -8,3 +8,7 @@ result
 *.pem
 *.csr
 extfile.conf
+
+# flatpak files
+.flatpak-builder
+repo

.rustfmt.toml

@@ -0,0 +1,4 @@
+style_edition = "2024"
+
+max_width = 100
+tab_spaces = 4

Cargo.toml

@@ -23,6 +23,9 @@ lto = "fat"
 strip = true
 panic = "abort"
 
+[build-dependencies]
+shadow-rs = "1.2.0"
+
 [dependencies]
 input-event = { path = "input-event", version = "0.3.0" }
 input-emulation = { path = "input-emulation", version = "0.3.0", default-features = false }
@@ -31,9 +34,11 @@ lan-mouse-cli = { path = "lan-mouse-cli", version = "0.2.0" }
 lan-mouse-gtk = { path = "lan-mouse-gtk", version = "0.2.0", optional = true }
 lan-mouse-ipc = { path = "lan-mouse-ipc", version = "0.2.0" }
 lan-mouse-proto = { path = "lan-mouse-proto", version = "0.2.0" }
+shadow-rs = { version = "1.2.0", features = ["metadata"] }
 
-hickory-resolver = "0.24.1"
+hickory-resolver = "0.25.2"
 toml = "0.8"
+toml_edit = { version = "0.22", features = ["serde"] }
 serde = { version = "1.0", features = ["derive"] }
 log = "0.4.20"
 env_logger = "0.11.3"
@@ -54,8 +59,8 @@ slab = "0.4.9"
 thiserror = "2.0.0"
 tokio-util = "0.7.11"
 local-channel = "0.1.5"
-webrtc-dtls = { version = "0.10.0", features = ["pem"] }
-webrtc-util = "0.9.0"
+webrtc-dtls = { version = "0.12.0", features = ["pem"] }
+webrtc-util = "0.11.0"
 rustls = { version = "0.23.12", default-features = false, features = [
     "std",
     "ring",
@@ -85,3 +90,8 @@ libei_emulation = ["input-event/libei", "input-emulation/libei"]
 wlroots_emulation = ["input-emulation/wlroots"]
 x11_emulation = ["input-emulation/x11"]
 rdp_emulation = ["input-emulation/remote_desktop_portal"]
+
+[package.metadata.bundle]
+name = "Lan Mouse"
+icon = ["target/icon.icns"]
+identifier = "de.feschber.LanMouse"

README.md

@@ -50,6 +50,10 @@ Most current desktop environments and operating systems are fully supported, thi
 
 For more detailed information about os support see [Detailed OS Support](#detailed-os-support)
 
+### Android & IOS
+
+A proof of concept for an Android / IOS Application by [rohitsangwan01](https://github.com/rohitsangwan01) can be found [here](https://github.com/rohitsangwan01/lan-mouse-mobile).
+It can be used as a remote control for any device supported by Lan Mouse.
 
 ## Installation
 
@@ -77,15 +81,37 @@ paru -S lan-mouse-git
 - flake: [README.md](./nix/README.md)
 </details>
 
+<details>
+    <summary>Fedora</summary>
+You can install Lan Mouse from the [Terra Repository](https://terra.fyralabs.com).
+
+
+After enabling Terra:
+
+```sh
+dnf install lan-mouse
+```
+</details>
+
+<details>
+    <summary>MacOS</summary>
+
+- Download the package for your Mac (Intel or ARM) from the releases page
+- Unzip it
+- Remove the quarantine with `xattr -rd com.apple.quarantine "Lan Mouse.app"`
+- Launch the app
+- Grant accessibility permissions in System Preferences
+
+</details>
 
 
 <details>
     <summary>Manual Installation</summary>
 
-First make sure to [install the necessary dependencies](#installing-dependencies).
+First make sure to [install the necessary dependencies](#installing-dependencies-for-development--compiling-from-source).
 
 Precompiled release binaries for Windows, MacOS and Linux are available in the [releases section](https://github.com/feschber/lan-mouse/releases).
-For Windows, the depenedencies are included in the .zip file, for other operating systems see [Installing Dependencies](#installing-dependencies).
+For Windows, the depenedencies are included in the .zip file, for other operating systems see [Installing Dependencies](#installing-dependencies-for-development--compiling-from-source).
 
 Alternatively, the `lan-mouse` binary can be compiled from source (see below).
 
@@ -140,10 +166,11 @@ rust toolchain.
 Additionally, available backends and frontends can be configured manually via
 [cargo features](https://doc.rust-lang.org/cargo/reference/features.html).
 
-E.g. if only wayland support is needed, the following command produces
-an executable with just support for wayland:
+E.g. if only support for sway is needed, the following command produces
+an executable with support for only the `layer-shell` capture backend
+and `wlroots` emulation backend:
 ```sh
-cargo build --no-default-features --features wayland
+cargo build --no-default-features --features layer_shell_capture,wlroots_emulation
 ```
 For a detailed list of available features, checkout the [Cargo.toml](./Cargo.toml)
 </details>
@@ -156,7 +183,15 @@ For a detailed list of available features, checkout the [Cargo.toml](./Cargo.tom
     <summary>MacOS</summary>
 
 ```sh
-brew install libadwaita pkg-config
+# Install dependencies
+brew install libadwaita pkg-config imagemagick
+cargo install cargo-bundle
+# Create the macOS icon file
+scripts/makeicns.sh
+# Create the .app bundle
+cargo bundle
+# Copy all dynamic libraries into the bundle, and update the bundle to find them there
+scripts/copy-macos-dylib.sh
 ```
 </details>
 
@@ -263,19 +298,17 @@ If the device still can not be entered, make sure you have UDP port `4242` (or t
 <details>
     <summary>Command Line Interface</summary>
 
-The cli interface can be enabled using `--frontend cli` as commandline arguments.
-Type `help` to list the available commands.
-
-E.g.:
+The cli interface can be accessed by passing `cli` as a commandline argument.
+Use
 ```sh
-$ cargo run --release -- --frontend cli
-(...)
-> connect <host> left|right|top|bottom
-(...)
-> list
-(...)
-> activate 0
+lan-mouse cli help
 ```
+ to list the available commands and
+```sh
+lan-mouse cli <cmd> help
+```
+for information on how to use a specific command.
+
 </details>
 
 <details>
@@ -283,11 +316,14 @@ $ cargo run --release -- --frontend cli
 
 Lan Mouse can be launched in daemon mode to keep it running in the background (e.g. for use in a systemd-service).
 
-To do so, add `--daemon` to the commandline args:
+To do so, use the `daemon` subcommand:
 
 ```sh
-lan-mouse --daemon
+lan-mouse daemon
 ```
+</details>
+
+## Systemd Service
 
 In order to start lan-mouse with a graphical session automatically,
 the [systemd-service](service/lan-mouse.service) can be used:
@@ -299,7 +335,9 @@ cp service/lan-mouse.service ~/.config/systemd/user
 systemctl --user daemon-reload
 systemctl --user enable --now lan-mouse.service
 ```
-</details>
+> [!Important]
+> Make sure to point `ExecStart=/usr/bin/lan-mouse daemon` to the actual `lan-mouse` binary (in case it is not under `/usr/bin`, e.g. when installed manually.
+
 
 ## Configuration
 To automatically load clients on startup, the file `$XDG_CONFIG_HOME/lan-mouse/config.toml` is parsed.
@@ -310,7 +348,7 @@ To create this file you can copy the following example config:
 ### Example config
 > [!TIP]
 > key symbols in the release bind are named according
-> to their names in [src/scancode.rs#L172](src/scancode.rs#L172).
+> to their names in [input-event/src/scancode.rs#L172](input-event/src/scancode.rs#L176).
 > This is bound to change
 
 ```toml
@@ -321,9 +359,6 @@ release_bind = [ "KeyA", "KeyS", "KeyD", "KeyF" ]
 
 # optional port (defaults to 4242)
 port = 4242
-# # optional frontend -> defaults to gtk if available
-# # possible values are "cli" and "gtk"
-# frontend = "gtk"
 
 # list of authorized tls certificate fingerprints that
 # are accepted for incoming traffic
@@ -331,7 +366,9 @@ port = 4242
 "bc:05:ab:7a:a4:de:88:8c:2f:92:ac:bc:b8:49:b8:24:0d:44:b3:e6:a4:ef:d7:0b:6c:69:6d:77:53:0b:14:80" = "iridium"
 
 # define a client on the right side with host name "iridium"
-[right]
+[[clients]]
+# position (left | right | top | bottom)
+position = "right"
 # hostname
 hostname = "iridium"
 # activate this client immediately when lan-mouse is started
@@ -340,7 +377,8 @@ activate_on_startup = true
 ips = ["192.168.178.156"]
 
 # define a client on the left side with IP address 192.168.178.189
-[left]
+[[clients]]
+position = "left"
 # The hostname is optional: When no hostname is specified,
 # at least one ip address needs to be specified.
 hostname = "thorium"
@@ -380,14 +418,14 @@ The following sections detail the emulation and capture backends provided by lan
 
 ### Input Emulation Support
 
-| Desktop / Backend         | layer-shell              | libei                    | windows                  |   macos                                | x11 |
-|---------------------------|--------------------------|--------------------------|--------------------------|----------------------------------------|-----|
-| Wayland (wlroots)         | :heavy_check_mark:       |                          |                          |                                        |     |
-| Wayland (KDE)             | :heavy_check_mark:       | :heavy_check_mark:       |                          |                                        |     |
-| Wayland (Gnome)           |                          | :heavy_check_mark:       |                          |                                        |     |
-| Windows                   |                          |                          | :heavy_check_mark:       |                                        |     |
-| MacOS                     |                          |                          |                          |   :heavy_check_mark:                   |     |
-| X11                       |                          |                          |                          |                                        | WIP |
+| Desktop / Backend         | wlroots                  | libei                    | remote-desktop portal    | windows                  |   macos                                | x11                |
+|---------------------------|--------------------------|--------------------------|--------------------------|--------------------------|----------------------------------------|--------------------|
+| Wayland (wlroots)         | :heavy_check_mark:       |                          |                          |                          |                                        |                    |
+| Wayland (KDE)             |                          | :heavy_check_mark:       | :heavy_check_mark:       |                          |                                        |                    |
+| Wayland (Gnome)           |                          | :heavy_check_mark:       | :heavy_check_mark:       |                          |                                        |                    |
+| Windows                   |                          |                          |                          | :heavy_check_mark:       |                                        |                    |
+| MacOS                     |                          |                          |                          |                          |   :heavy_check_mark:                   |                    |
+| X11                       |                          |                          |                          |                          |                                        | :heavy_check_mark: |
 
 - `wlroots`: This backend makes use of the [wlr-virtual-pointer-unstable-v1](https://wayland.app/protocols/wlr-virtual-pointer-unstable-v1) and [virtual-keyboard-unstable-v1](https://wayland.app/protocols/virtual-keyboard-unstable-v1) protocols and is supported by most wlroots based compositors.
 - `libei`: This backend uses [libei](https://gitlab.freedesktop.org/libinput/libei) and is supported by GNOME >= 45 or KDE Plasma >= 6.1.
@@ -400,14 +438,14 @@ The following sections detail the emulation and capture backends provided by lan
 
 ### Input Capture Support
 
-| Desktop / Backend         | wlroots                  | libei                    | remote-desktop portal    | windows                  |   macos                                | x11                |
-|---------------------------|--------------------------|--------------------------|--------------------------|--------------------------|----------------------------------------|--------------------|
-| Wayland (wlroots)         | :heavy_check_mark:       |                          |                          |                          |                                        |                    |
-| Wayland (KDE)             |                          | :heavy_check_mark:       | :heavy_check_mark:       |                          |                                        |                    |
-| Wayland (Gnome)           |                          | :heavy_check_mark:       | :heavy_check_mark:       |                          |                                        |                    |
-| Windows                   |                          |                          |                          | :heavy_check_mark:       |                                        |                    |
-| MacOS                     |                          |                          |                          |                          |   :heavy_check_mark:                   |                    |
-| X11                       |                          |                          |                          |                          |                                        | :heavy_check_mark: |
+| Desktop / Backend         | layer-shell              | libei                    | windows                  |   macos                                | x11 |
+|---------------------------|--------------------------|--------------------------|--------------------------|----------------------------------------|-----|
+| Wayland (wlroots)         | :heavy_check_mark:       |                          |                          |                                        |     |
+| Wayland (KDE)             | :heavy_check_mark:       | :heavy_check_mark:       |                          |                                        |     |
+| Wayland (Gnome)           |                          | :heavy_check_mark:       |                          |                                        |     |
+| Windows                   |                          |                          | :heavy_check_mark:       |                                        |     |
+| MacOS                     |                          |                          |                          |   :heavy_check_mark:                   |     |
+| X11                       |                          |                          |                          |                                        | WIP |
 
 - `layer-shell`: This backend creates a single pixel wide window on the edges of Displays to capture the cursor using the [layer-shell protocol](https://wayland.app/protocols/wlr-layer-shell-unstable-v1).
 - `libei`: This backend uses [libei](https://gitlab.freedesktop.org/libinput/libei) and is supported by GNOME >= 45 or KDE Plasma >= 6.1.

build-aux/de.feschber.LanMouse.yml

@@ -0,0 +1,50 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/flatpak/flatpak-builder/refs/heads/main/data/flatpak-manifest.schema.json
+app-id: de.feschber.LanMouse
+runtime: org.gnome.Platform
+runtime-version: "48"
+sdk: org.gnome.Sdk
+sdk-extensions:
+  - org.freedesktop.Sdk.Extension.rust-stable
+  - org.freedesktop.Sdk.Extension.llvm20
+command: /app/bin/lan-mouse
+build-options:
+  append-path: "/usr/lib/sdk/rust-stable/bin:/usr/lib/sdk/llvm20/bin"
+  env:
+    "CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER": "clang"
+    "CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUSTFLAGS": "-C link-arg=-fuse-ld=/usr/lib/sdk/rust-stable/bin/mold"
+    "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER": "clang"
+    "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_RUSTFLAGS": "-C link-arg=-fuse-ld=/usr/lib/sdk/rust-stable/bin/mold"
+    build-args:
+      "--share=network"
+    prepend-ld-library-path:
+      "/usr/lib/sdk/llvm19/lib"
+
+finish-args:
+  - "--socket=wayland"
+  - "--socket=fallback-x11"
+  - "--device=dri"
+  - "--socket=session-bus"
+  - "--share=network"
+  - "--filesystem=xdg-config"
+  - "--env=RUST_BACKTRACE=1"
+  - "--env=RUST_LOG=lan-mouse=debug"
+  - "--env=GTK_PATH=/app/lib/gtk-4.0"
+
+modules:
+  - name: lan-mouse
+    buildsystem: simple
+    build-options:
+      build-args:
+        - "--share=network"
+      append-path: /usr/lib/sdk/rust-stable/bin
+      env:
+        CARGO_HOME: /run/build/lan-mouse/cargo
+    build-commands:
+      - cargo fetch --manifest-path Cargo.toml --verbose
+      - cargo build
+      - install -Dm0755 target/debug/lan-mouse /app/bin/lan-mouse
+      - install -Dm0644 lan-mouse-gtk/resources/de.feschber.LanMouse.svg ${FLATPAK_DEST}/share/icons/hicolor/scalable/apps/${FLATPAK_ID}.svg
+      - install -Dm0644 de.feschber.LanMouse.desktop ${FLATPAK_DEST}/share/applications/${FLATPAK_ID}.desktop
+    sources:
+      - type: dir
+        path: ..

build.rs

@@ -1,15 +1,8 @@
-use std::process::Command;
+use shadow_rs::ShadowBuilder;
 
 fn main() {
-    // commit hash
-    let git_describe = Command::new("git")
-        .arg("describe")
-        .arg("--always")
-        .arg("--dirty")
-        .arg("--tags")
-        .output()
-        .unwrap();
-
-    let git_describe = String::from_utf8(git_describe.stdout).unwrap();
-    println!("cargo::rustc-env=GIT_DESCRIBE={git_describe}");
+    ShadowBuilder::builder()
+        .deny_const(Default::default())
+        .build()
+        .expect("shadow build");
 }

config.toml

@@ -1,14 +1,10 @@
 # example configuration
 
-# capture_backend = "LayerShell"
-
-# release bind
-release_bind = ["KeyA", "KeyS", "KeyD", "KeyF"]
+# configure release bind
+release_bind = [ "KeyA", "KeyS", "KeyD", "KeyF" ]
 
 # optional port (defaults to 4242)
 port = 4242
-# optional frontend -> defaults to gtk if available
-# frontend = "gtk"
 
 # list of authorized tls certificate fingerprints that
 # are accepted for incoming traffic
@@ -16,14 +12,19 @@ port = 4242
 "bc:05:ab:7a:a4:de:88:8c:2f:92:ac:bc:b8:49:b8:24:0d:44:b3:e6:a4:ef:d7:0b:6c:69:6d:77:53:0b:14:80" = "iridium"
 
 # define a client on the right side with host name "iridium"
-[right]
+[[clients]]
+# position (left | right | top | bottom)
+position = "right"
 # hostname
 hostname = "iridium"
+# activate this client immediately when lan-mouse is started
+activate_on_startup = true
 # optional list of (known) ip addresses
 ips = ["192.168.178.156"]
 
 # define a client on the left side with IP address 192.168.178.189
-[left]
+[[clients]]
+position = "left"
 # The hostname is optional: When no hostname is specified,
 # at least one ip address needs to be specified.
 hostname = "thorium"

de.feschber.LanMouse.yml

@@ -1,14 +0,0 @@
-app-id: de.feschber.LanMouse
-runtime: org.freedesktop.Platform
-runtime-version: '22.08'
-sdk: org.freedesktop.Sdk
-command: target/release/lan-mouse
-modules:
-  - name: hello
-    buildsystem: simple
-    build-commands:
-      - cargo build --release
-      - install -D lan-mouse /app/bin/lan-mouse
-    sources:
-      - type: file
-        path: target/release/lan-mouse

dylibs/.gitignore

@@ -0,0 +1 @@
+*

flake.lock

@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1728018373,
-        "narHash": "sha256-NOiTvBbRLIOe5F6RbHaAh6++BNjsb149fGZd1T4+KBg=",
+        "lastModified": 1752687322,
+        "narHash": "sha256-RKwfXA4OZROjBTQAl9WOZQFm7L8Bo93FQwSJpAiSRvo=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "bc947f541ae55e999ffdb4013441347d83b00feb",
+        "rev": "6e987485eb2c77e5dcc5af4e3c70843711ef9251",
         "type": "github"
       },
       "original": {
@@ -29,11 +29,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1728181869,
-        "narHash": "sha256-sQXHXsjIcGEoIHkB+RO6BZdrPfB+43V1TEpyoWRI3ww=",
+        "lastModified": 1752806774,
+        "narHash": "sha256-4cHeoR2roN7d/3J6gT+l6o7J2hTrBIUiCwVdDNMeXzE=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "cd46aa3906c14790ef5cbe278d9e54f2c38f95c0",
+        "rev": "3c90219b3ba1c9790c45a078eae121de48a39c55",
         "type": "github"
       },
       "original": {

input-capture/Cargo.toml

@@ -23,6 +23,7 @@ tokio = { version = "1.32.0", features = [
     "rt",
     "sync",
     "signal",
+    "time",
 ] }
 once_cell = "1.19.0"
 async-trait = "0.1.81"
@@ -40,21 +41,21 @@ wayland-protocols-wlr = { version = "0.3.1", features = [
     "client",
 ], optional = true }
 x11 = { version = "2.21.0", features = ["xlib", "xtest"], optional = true }
-ashpd = { version = "0.10", default-features = false, features = [
+ashpd = { version = "0.11.0", default-features = false, features = [
     "tokio",
 ], optional = true }
-reis = { version = "0.4", features = ["tokio"], optional = true }
+reis = { version = "0.5.0", features = ["tokio"], optional = true }
 
 [target.'cfg(target_os="macos")'.dependencies]
-core-graphics = { version = "0.24.0", features = ["highsierra"] }
+core-graphics = { version = "0.25.0", features = ["highsierra"] }
 core-foundation = "0.10.0"
 core-foundation-sys = "0.8.6"
 libc = "0.2.155"
-keycode = "0.4.0"
+keycode = "1.0.0"
 bitflags = "2.6.0"
 
 [target.'cfg(windows)'.dependencies]
-windows = { version = "0.58.0", features = [
+windows = { version = "0.61.2", features = [
     "Win32_System_LibraryLoader",
     "Win32_System_Threading",
     "Win32_Foundation",

input-capture/src/dummy.rs

@@ -1,6 +1,6 @@
 use std::f64::consts::PI;
 use std::pin::Pin;
-use std::task::{ready, Context, Poll};
+use std::task::{Context, Poll, ready};
 use std::time::Duration;
 
 use async_trait::async_trait;

input-capture/src/error.rs

@@ -12,9 +12,9 @@ pub enum InputCaptureError {
 use std::io;
 #[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
 use wayland_client::{
+    ConnectError, DispatchError,
     backend::WaylandError,
     globals::{BindError, GlobalError},
-    ConnectError, DispatchError,
 };
 
 #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]

input-capture/src/layer_shell.rs

@@ -1,12 +1,13 @@
 use async_trait::async_trait;
 use futures_core::Stream;
 use std::{
-    collections::VecDeque,
+    collections::{HashSet, VecDeque},
     env,
+    fmt::{self, Display},
     io::{self, ErrorKind},
     os::fd::{AsFd, RawFd},
     pin::Pin,
-    task::{ready, Context, Poll},
+    task::{Context, Poll, ready},
 };
 use tokio::io::unix::AsyncFd;
 
@@ -44,18 +45,20 @@ use wayland_protocols_wlr::layer_shell::v1::client::{
 };
 
 use wayland_client::{
+    Connection, Dispatch, DispatchError, EventQueue, QueueHandle, WEnum,
     backend::{ReadEventsGuard, WaylandError},
     delegate_noop,
-    globals::{registry_queue_init, GlobalListContents},
+    globals::{Global, GlobalList, GlobalListContents, registry_queue_init},
     protocol::{
         wl_buffer, wl_compositor,
         wl_keyboard::{self, WlKeyboard},
         wl_output::{self, WlOutput},
         wl_pointer::{self, WlPointer},
-        wl_region, wl_registry, wl_seat, wl_shm, wl_shm_pool,
+        wl_region,
+        wl_registry::{self, WlRegistry},
+        wl_seat, wl_shm, wl_shm_pool,
         wl_surface::WlSurface,
     },
-    Connection, Dispatch, DispatchError, EventQueue, QueueHandle, WEnum,
 };
 
 use input_event::{Event, KeyboardEvent, PointerEvent};
@@ -63,8 +66,8 @@ use input_event::{Event, KeyboardEvent, PointerEvent};
 use crate::{CaptureError, CaptureEvent};
 
 use super::{
-    error::{LayerShellCaptureCreationError, WaylandBindError},
     Capture, Position,
+    error::{LayerShellCaptureCreationError, WaylandBindError},
 };
 
 struct Globals {
@@ -75,28 +78,42 @@ struct Globals {
     seat: wl_seat::WlSeat,
     shm: wl_shm::WlShm,
     layer_shell: ZwlrLayerShellV1,
-    outputs: Vec<WlOutput>,
     xdg_output_manager: ZxdgOutputManagerV1,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Clone, Debug)]
+struct Output {
+    wl_output: WlOutput,
+    global: Global,
+    info: Option<OutputInfo>,
+    pending_info: OutputInfo,
+    has_xdg_info: bool,
+}
+
+impl Display for Output {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        if let Some(info) = &self.info {
+            write!(
+                f,
+                "{} {}x{} @pos {:?} ({})",
+                info.name, info.size.0, info.size.1, info.position, info.description
+            )
+        } else {
+            write!(f, "unknown output")
+        }
+    }
+}
+
+#[derive(Clone, Debug, Default)]
 struct OutputInfo {
+    description: String,
     name: String,
     position: (i32, i32),
     size: (i32, i32),
 }
 
-impl OutputInfo {
-    fn new() -> Self {
-        Self {
-            name: "".to_string(),
-            position: (0, 0),
-            size: (0, 0),
-        }
-    }
-}
-
 struct State {
+    active_positions: HashSet<Position>,
     pointer: Option<WlPointer>,
     keyboard: Option<WlKeyboard>,
     pointer_lock: Option<ZwpLockedPointerV1>,
@@ -104,12 +121,13 @@ struct State {
     shortcut_inhibitor: Option<ZwpKeyboardShortcutsInhibitorV1>,
     active_windows: Vec<Arc<Window>>,
     focused: Option<Arc<Window>>,
-    g: Globals,
+    global_list: GlobalList,
+    globals: Globals,
     wayland_fd: RawFd,
     read_guard: Option<ReadEventsGuard>,
     qh: QueueHandle<Self>,
     pending_events: VecDeque<(Position, CaptureEvent)>,
-    output_info: Vec<(WlOutput, OutputInfo)>,
+    outputs: Vec<Output>,
     scroll_discrete_pending: bool,
 }
 
@@ -142,7 +160,7 @@ impl Window {
         size: (i32, i32),
     ) -> Window {
         log::debug!("creating window output: {output:?}, size: {size:?}");
-        let g = &state.g;
+        let g = &state.globals;
 
         let (width, height) = match pos {
             Position::Left | Position::Right => (1, size.1 as u32),
@@ -203,41 +221,36 @@ impl Drop for Window {
     }
 }
 
-fn get_edges(outputs: &[(WlOutput, OutputInfo)], pos: Position) -> Vec<(WlOutput, i32)> {
+fn get_edges(outputs: &[Output], pos: Position) -> Vec<(Output, i32)> {
     outputs
         .iter()
-        .map(|(o, i)| {
-            (
-                o.clone(),
-                match pos {
-                    Position::Left => i.position.0,
-                    Position::Right => i.position.0 + i.size.0,
-                    Position::Top => i.position.1,
-                    Position::Bottom => i.position.1 + i.size.1,
-                },
-            )
+        .filter_map(|output| {
+            output.info.as_ref().map(|info| {
+                (
+                    output.clone(),
+                    match pos {
+                        Position::Left => info.position.0,
+                        Position::Right => info.position.0 + info.size.0,
+                        Position::Top => info.position.1,
+                        Position::Bottom => info.position.1 + info.size.1,
+                    },
+                )
+            })
         })
         .collect()
 }
 
-fn get_output_configuration(state: &State, pos: Position) -> Vec<(WlOutput, OutputInfo)> {
+fn get_output_configuration(state: &State, pos: Position) -> Vec<Output> {
     // get all output edges corresponding to the position
-    let edges = get_edges(&state.output_info, pos);
-    log::debug!("edges: {edges:?}");
-    let opposite_edges = get_edges(&state.output_info, pos.opposite());
+    let edges = get_edges(&state.outputs, pos);
+    let opposite_edges = get_edges(&state.outputs, pos.opposite());
 
     // remove those edges that are at the same position
     // as an opposite edge of a different output
-    let outputs: Vec<WlOutput> = edges
+    edges
         .iter()
         .filter(|(_, edge)| !opposite_edges.iter().map(|(_, e)| *e).any(|e| &e == edge))
         .map(|(o, _)| o.clone())
-        .collect();
-    state
-        .output_info
-        .iter()
-        .filter(|(o, _)| outputs.contains(o))
-        .map(|(o, i)| (o.clone(), i.clone()))
         .collect()
 }
 
@@ -259,36 +272,36 @@ fn draw(f: &mut File, (width, height): (u32, u32)) {
 impl LayerShellInputCapture {
     pub fn new() -> std::result::Result<Self, LayerShellCaptureCreationError> {
         let conn = Connection::connect_to_env()?;
-        let (g, mut queue) = registry_queue_init::<State>(&conn)?;
+        let (global_list, mut queue) = registry_queue_init::<State>(&conn)?;
 
         let qh = queue.handle();
 
-        let compositor: wl_compositor::WlCompositor = g
+        let compositor: wl_compositor::WlCompositor = global_list
             .bind(&qh, 4..=5, ())
             .map_err(|e| WaylandBindError::new(e, "wl_compositor 4..=5"))?;
-        let xdg_output_manager: ZxdgOutputManagerV1 = g
+        let xdg_output_manager: ZxdgOutputManagerV1 = global_list
             .bind(&qh, 1..=3, ())
             .map_err(|e| WaylandBindError::new(e, "xdg_output_manager 1..=3"))?;
-        let shm: wl_shm::WlShm = g
+        let shm: wl_shm::WlShm = global_list
             .bind(&qh, 1..=1, ())
             .map_err(|e| WaylandBindError::new(e, "wl_shm"))?;
-        let layer_shell: ZwlrLayerShellV1 = g
+        let layer_shell: ZwlrLayerShellV1 = global_list
             .bind(&qh, 3..=4, ())
             .map_err(|e| WaylandBindError::new(e, "wlr_layer_shell 3..=4"))?;
-        let seat: wl_seat::WlSeat = g
+        let seat: wl_seat::WlSeat = global_list
             .bind(&qh, 7..=8, ())
             .map_err(|e| WaylandBindError::new(e, "wl_seat 7..=8"))?;
 
-        let pointer_constraints: ZwpPointerConstraintsV1 = g
+        let pointer_constraints: ZwpPointerConstraintsV1 = global_list
             .bind(&qh, 1..=1, ())
             .map_err(|e| WaylandBindError::new(e, "zwp_pointer_constraints_v1"))?;
-        let relative_pointer_manager: ZwpRelativePointerManagerV1 = g
+        let relative_pointer_manager: ZwpRelativePointerManagerV1 = global_list
             .bind(&qh, 1..=1, ())
             .map_err(|e| WaylandBindError::new(e, "zwp_relative_pointer_manager_v1"))?;
         let shortcut_inhibit_manager: Result<
             ZwpKeyboardShortcutsInhibitManagerV1,
             WaylandBindError,
-        > = g
+        > = global_list
             .bind(&qh, 1..=1, ())
             .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
@@ -297,65 +310,41 @@ impl LayerShellInputCapture {
                 to the client");
         }
         let shortcut_inhibit_manager = shortcut_inhibit_manager.ok();
-        let outputs = vec![];
-
-        let g = Globals {
-            compositor,
-            shm,
-            layer_shell,
-            seat,
-            pointer_constraints,
-            relative_pointer_manager,
-            shortcut_inhibit_manager,
-            outputs,
-            xdg_output_manager,
-        };
-
-        // flush outgoing events
-        queue.flush()?;
-
-        let wayland_fd = queue.as_fd().as_raw_fd();
 
         let mut state = State {
+            active_positions: Default::default(),
             pointer: None,
             keyboard: None,
-            g,
+            global_list,
+            globals: Globals {
+                compositor,
+                shm,
+                layer_shell,
+                seat,
+                pointer_constraints,
+                relative_pointer_manager,
+                shortcut_inhibit_manager,
+                xdg_output_manager,
+            },
             pointer_lock: None,
             rel_pointer: None,
             shortcut_inhibitor: None,
             active_windows: Vec::new(),
             focused: None,
             qh,
-            wayland_fd,
+            wayland_fd: queue.as_fd().as_raw_fd(),
             read_guard: None,
             pending_events: VecDeque::new(),
-            output_info: vec![],
+            outputs: vec![],
             scroll_discrete_pending: false,
         };
 
-        // dispatch registry to () again, in order to read all wl_outputs
-        conn.display().get_registry(&state.qh, ());
-        log::debug!("==============> requested registry");
-
-        // roundtrip to read wl_output globals
-        queue.roundtrip(&mut state)?;
-        log::debug!("==============> roundtrip 1 done");
-
-        // read outputs
-        for output in state.g.outputs.iter() {
-            state
-                .g
-                .xdg_output_manager
-                .get_xdg_output(output, &state.qh, output.clone());
+        for global in state.global_list.contents().clone_list() {
+            state.register_global(global);
         }
 
-        // roundtrip to read xdg_output events
-        queue.roundtrip(&mut state)?;
-
-        log::debug!("==============> roundtrip 2 done");
-        for i in &state.output_info {
-            log::debug!("{:#?}", i.1);
-        }
+        // flush outgoing events
+        queue.flush()?;
 
         let read_guard = loop {
             match queue.prepare_read() {
@@ -379,6 +368,7 @@ impl LayerShellInputCapture {
 
     fn delete_client(&mut self, pos: Position) {
         let inner = self.0.get_mut();
+        inner.state.active_positions.remove(&pos);
         // remove all windows corresponding to this client
         while let Some(i) = inner.state.active_windows.iter().position(|w| w.pos == pos) {
             inner.state.active_windows.remove(i);
@@ -388,6 +378,52 @@ impl LayerShellInputCapture {
 }
 
 impl State {
+    fn update_output_info(&mut self, name: u32) {
+        let output = self
+            .outputs
+            .iter_mut()
+            .find(|o| o.global.name == name)
+            .expect("output not found");
+        if output.has_xdg_info {
+            output.info.replace(output.pending_info.clone());
+            self.update_windows();
+        }
+    }
+
+    fn register_global(&mut self, global: Global) {
+        if global.interface.as_str() == "wl_output" {
+            log::debug!("new output global: wl_output {}", global.name);
+            let wl_output = self.global_list.registry().bind::<WlOutput, _, _>(
+                global.name,
+                4,
+                &self.qh,
+                global.name,
+            );
+            self.globals
+                .xdg_output_manager
+                .get_xdg_output(&wl_output, &self.qh, global.name);
+            self.outputs.push(Output {
+                wl_output,
+                global,
+                info: None,
+                has_xdg_info: false,
+                pending_info: Default::default(),
+            })
+        }
+    }
+
+    fn deregister_global(&mut self, name: u32) {
+        self.outputs.retain(|o| {
+            if o.global.name == name {
+                log::debug!("{o} (global {:?}) removed", o.global);
+                o.wl_output.release();
+                false
+            } else {
+                true
+            }
+        });
+    }
+
     fn grab(
         &mut self,
         surface: &WlSurface,
@@ -408,7 +444,7 @@ impl State {
 
         // lock pointer
         if self.pointer_lock.is_none() {
-            self.pointer_lock = Some(self.g.pointer_constraints.lock_pointer(
+            self.pointer_lock = Some(self.globals.pointer_constraints.lock_pointer(
                 surface,
                 pointer,
                 None,
@@ -420,7 +456,7 @@ impl State {
 
         // request relative input
         if self.rel_pointer.is_none() {
-            self.rel_pointer = Some(self.g.relative_pointer_manager.get_relative_pointer(
+            self.rel_pointer = Some(self.globals.relative_pointer_manager.get_relative_pointer(
                 pointer,
                 qh,
                 (),
@@ -428,10 +464,14 @@ impl State {
         }
 
         // capture modifier keys
-        if let Some(shortcut_inhibit_manager) = &self.g.shortcut_inhibit_manager {
+        if let Some(shortcut_inhibit_manager) = &self.globals.shortcut_inhibit_manager {
             if self.shortcut_inhibitor.is_none() {
-                self.shortcut_inhibitor =
-                    Some(shortcut_inhibit_manager.inhibit_shortcuts(surface, &self.g.seat, qh, ()));
+                self.shortcut_inhibitor = Some(shortcut_inhibit_manager.inhibit_shortcuts(
+                    surface,
+                    &self.globals.seat,
+                    qh,
+                    (),
+                ));
             }
         }
     }
@@ -469,21 +509,39 @@ impl State {
     }
 
     fn add_client(&mut self, pos: Position) {
+        self.active_positions.insert(pos);
         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);
+        log::info!(
+            "adding capture for position {pos} - using outputs: {:?}",
+            outputs
+                .iter()
+                .map(|o| o
+                    .info
+                    .as_ref()
+                    .map(|i| i.name.to_owned())
+                    .unwrap_or("unknown output".to_owned()))
+                .collect::<Vec<_>>()
+        );
+        outputs.iter().for_each(|o| {
+            if let Some(info) = o.info.as_ref() {
+                let window = Window::new(self, &self.qh, &o.wl_output, pos, info.size);
+                let window = Arc::new(window);
+                self.active_windows.push(window);
+            }
         });
     }
 
     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();
-        for pos in clients {
+        log::info!("active outputs: ");
+        for output in self.outputs.iter().filter(|o| o.info.is_some()) {
+            log::info!(" * {output}");
+        }
+
+        self.active_windows.clear();
+
+        let active_positions = self.active_positions.iter().cloned().collect::<Vec<_>>();
+        for pos in active_positions {
             self.add_client(pos);
         }
     }
@@ -524,17 +582,17 @@ impl Inner {
         match self.queue.dispatch_pending(&mut self.state) {
             Ok(_) => {}
             Err(DispatchError::Backend(WaylandError::Io(e))) => {
-                log::error!("Wayland Error: {}", e);
+                log::error!("Wayland Error: {e}");
             }
             Err(DispatchError::Backend(e)) => {
-                panic!("backend error: {}", e);
+                panic!("backend error: {e}");
             }
             Err(DispatchError::BadMessage {
                 sender_id,
                 interface,
                 opcode,
             }) => {
-                panic!("bad message {}, {} , {}", sender_id, interface, opcode);
+                panic!("bad message {sender_id}, {interface} , {opcode}");
             }
         }
     }
@@ -755,7 +813,7 @@ impl Dispatch<WlPointer, ()> for State {
                     })),
                 ));
             }
-            wl_pointer::Event::Frame {} => {
+            wl_pointer::Event::Frame => {
                 // TODO properly handle frame events
                 // we simply insert a frame event on the client side
                 // after each event for now
@@ -835,7 +893,7 @@ impl Dispatch<ZwpRelativePointerV1, ()> for State {
         } = event
         {
             if let Some(window) = &app.focused {
-                let time = (((utime_hi as u64) << 32 | utime_lo as u64) / 1000) as u32;
+                let time = ((((utime_hi as u64) << 32) | utime_lo as u64) / 1000) as u32;
                 app.pending_events.push_back((
                     window.pos,
                     CaptureEvent::Input(Event::Pointer(PointerEvent::Motion { time, dx, dy })),
@@ -872,94 +930,89 @@ impl Dispatch<ZwlrLayerSurfaceV1, ()> for State {
 }
 
 // delegate wl_registry events to App itself
-impl Dispatch<wl_registry::WlRegistry, GlobalListContents> for State {
-    fn event(
-        _state: &mut Self,
-        _proxy: &wl_registry::WlRegistry,
-        _event: <wl_registry::WlRegistry as wayland_client::Proxy>::Event,
-        _data: &GlobalListContents,
-        _conn: &Connection,
-        _qhandle: &QueueHandle<Self>,
-    ) {
-    }
-}
-
-impl Dispatch<wl_registry::WlRegistry, ()> for State {
+impl Dispatch<WlRegistry, GlobalListContents> for State {
     fn event(
         state: &mut Self,
-        registry: &wl_registry::WlRegistry,
-        event: <wl_registry::WlRegistry as wayland_client::Proxy>::Event,
-        _: &(),
-        _: &Connection,
-        qh: &QueueHandle<Self>,
+        _registry: &WlRegistry,
+        event: <WlRegistry as wayland_client::Proxy>::Event,
+        _data: &GlobalListContents,
+        _conn: &Connection,
+        _qh: &QueueHandle<Self>,
     ) {
         match event {
             wl_registry::Event::Global {
                 name,
                 interface,
-                version: _,
+                version,
             } => {
-                if interface.as_str() == "wl_output" {
-                    log::debug!("wl_output global");
-                    state
-                        .g
-                        .outputs
-                        .push(registry.bind::<WlOutput, _, _>(name, 4, qh, ()))
-                }
+                state.register_global(Global {
+                    name,
+                    interface,
+                    version,
+                });
+            }
+            wl_registry::Event::GlobalRemove { name } => {
+                state.deregister_global(name);
             }
-            wl_registry::Event::GlobalRemove { .. } => {}
             _ => {}
         }
     }
 }
 
-impl Dispatch<ZxdgOutputV1, WlOutput> for State {
+impl Dispatch<ZxdgOutputV1, u32> for State {
     fn event(
         state: &mut Self,
         _: &ZxdgOutputV1,
         event: <ZxdgOutputV1 as wayland_client::Proxy>::Event,
-        wl_output: &WlOutput,
+        name: &u32,
         _: &Connection,
         _: &QueueHandle<Self>,
     ) {
-        log::debug!("xdg-output - {event:?}");
-        let output_info = match state.output_info.iter_mut().find(|(o, _)| o == wl_output) {
-            Some((_, c)) => c,
-            None => {
-                let output_info = OutputInfo::new();
-                state.output_info.push((wl_output.clone(), output_info));
-                &mut state.output_info.last_mut().unwrap().1
-            }
-        };
+        let output = state
+            .outputs
+            .iter_mut()
+            .find(|o| o.global.name == *name)
+            .expect("output");
 
+        log::debug!("xdg_output {name} - {event:?}");
         match event {
             zxdg_output_v1::Event::LogicalPosition { x, y } => {
-                output_info.position = (x, y);
+                output.pending_info.position = (x, y);
+                output.has_xdg_info = true;
             }
             zxdg_output_v1::Event::LogicalSize { width, height } => {
-                output_info.size = (width, height);
+                output.pending_info.size = (width, height);
+                output.has_xdg_info = true;
+            }
+            zxdg_output_v1::Event::Done => {
+                log::warn!("Use of deprecated xdg-output event \"done\"");
+                state.update_output_info(*name);
             }
-            zxdg_output_v1::Event::Done => {}
             zxdg_output_v1::Event::Name { name } => {
-                output_info.name = name;
+                output.pending_info.name = name;
+                output.has_xdg_info = true;
             }
-            zxdg_output_v1::Event::Description { .. } => {}
-            _ => {}
+            zxdg_output_v1::Event::Description { description } => {
+                output.pending_info.description = description;
+                output.has_xdg_info = true;
+            }
+            _ => todo!(),
         }
     }
 }
 
-impl Dispatch<WlOutput, ()> for State {
+impl Dispatch<WlOutput, u32> for State {
     fn event(
         state: &mut Self,
-        _proxy: &WlOutput,
+        _wl_output: &WlOutput,
         event: <WlOutput as wayland_client::Proxy>::Event,
-        _data: &(),
+        name: &u32,
         _conn: &Connection,
         _qhandle: &QueueHandle<Self>,
     ) {
+        log::debug!("wl_output {name} - {event:?}");
         if let wl_output::Event::Done = event {
-            state.update_windows();
+            state.update_output_info(*name);
         }
     }
 }

input-capture/src/lib.rs

@@ -2,14 +2,14 @@ use std::{
     collections::{HashMap, HashSet, VecDeque},
     fmt::Display,
     mem::swap,
-    task::{ready, Poll},
+    task::{Poll, ready},
 };
 
 use async_trait::async_trait;
 use futures::StreamExt;
 use futures_core::Stream;
 
-use input_event::{scancode, Event, KeyboardEvent};
+use input_event::{Event, KeyboardEvent, scancode};
 
 pub use error::{CaptureCreationError, CaptureError, InputCaptureError};
 
@@ -79,7 +79,7 @@ impl Display for Position {
             Position::Top => "top",
             Position::Bottom => "bottom",
         };
-        write!(f, "{}", pos)
+        write!(f, "{pos}")
     }
 }
 

input-capture/src/libei.rs

@@ -1,10 +1,10 @@
 use ashpd::{
     desktop::{
+        Session,
         input_capture::{
             Activated, ActivatedBarrier, Barrier, BarrierID, Capabilities, InputCapture, Region,
             Zones,
         },
-        Session,
     },
     enumflags2::BitFlags,
 };
@@ -28,8 +28,8 @@ use std::{
 };
 use tokio::{
     sync::{
-        mpsc::{self, Receiver, Sender},
         Notify,
+        mpsc::{self, Receiver, Sender},
     },
     task::JoinHandle,
 };
@@ -42,8 +42,8 @@ use input_event::Event;
 use crate::CaptureEvent;
 
 use super::{
-    error::{CaptureError, LibeiCaptureCreationError},
     Capture as LanMouseInputCapture, Position,
+    error::{CaptureError, LibeiCaptureCreationError},
 };
 
 /* there is a bug in xdg-remote-desktop-portal-gnome / mutter that
@@ -153,7 +153,7 @@ async fn update_barriers(
 
 async fn create_session<'a>(
     input_capture: &'a InputCapture<'a>,
-) -> std::result::Result<(Session<'_, InputCapture<'_>>, BitFlags<Capabilities>), ashpd::Error> {
+) -> std::result::Result<(Session<'a, InputCapture<'a>>, BitFlags<Capabilities>), ashpd::Error> {
     log::debug!("creating input capture session");
     input_capture
         .create_session(
@@ -201,7 +201,7 @@ async fn libei_event_handler(
     }
 }
 
-impl<'a> LibeiInputCapture<'a> {
+impl LibeiInputCapture<'_> {
     pub async fn new() -> std::result::Result<Self, LibeiCaptureCreationError> {
         let input_capture = Box::pin(InputCapture::new().await?);
         let input_capture_ptr = input_capture.as_ref().get_ref() as *const InputCapture<'static>;
@@ -561,7 +561,7 @@ async fn handle_ei_event(
 }
 
 #[async_trait]
-impl<'a> LanMouseInputCapture for LibeiInputCapture<'a> {
+impl LanMouseInputCapture for LibeiInputCapture<'_> {
     async fn create(&mut self, pos: Position) -> Result<(), CaptureError> {
         let _ = self
             .notify_capture
@@ -587,14 +587,18 @@ impl<'a> LanMouseInputCapture for LibeiInputCapture<'a> {
         self.cancellation_token.cancel();
         let task = &mut self.capture_task;
         log::debug!("waiting for capture to terminate...");
-        let res = task.await.expect("libei task panic");
-        log::debug!("done!");
+        let res = if !task.is_finished() {
+            task.await.expect("libei task panic")
+        } else {
+            Ok(())
+        };
         self.terminated = true;
+        log::debug!("done!");
         res
     }
 }
 
-impl<'a> Drop for LibeiInputCapture<'a> {
+impl Drop for LibeiInputCapture<'_> {
     fn drop(&mut self) {
         if !self.terminated {
             /* this workaround is needed until async drop is stabilized */
@@ -603,7 +607,7 @@ impl<'a> Drop for LibeiInputCapture<'a> {
     }
 }
 
-impl<'a> Stream for LibeiInputCapture<'a> {
+impl Stream for LibeiInputCapture<'_> {
     type Item = Result<(Position, CaptureEvent), CaptureError>;
 
     fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {

input-capture/src/macos.rs

@@ -1,31 +1,40 @@
-use super::{error::MacosCaptureCreationError, Capture, CaptureError, CaptureEvent, Position};
+use super::{Capture, CaptureError, CaptureEvent, Position, error::MacosCaptureCreationError};
 use async_trait::async_trait;
 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_foundation::{
+    base::{CFRelease, kCFAllocatorDefault},
+    date::CFTimeInterval,
+    number::{CFBooleanRef, kCFBooleanTrue},
+    runloop::{CFRunLoop, CFRunLoopSource, kCFRunLoopCommonModes},
+    string::{CFStringCreateWithCString, CFStringRef, kCFStringEncodingUTF8},
+};
+use core_graphics::{
+    base::{CGError, kCGErrorSuccess},
+    display::{CGDisplay, CGPoint},
+    event::{
+        CGEvent, CGEventFlags, CGEventTap, CGEventTapLocation, CGEventTapOptions,
+        CGEventTapPlacement, CGEventTapProxy, CGEventType, CallbackResult, EventField,
+    },
+    event_source::{CGEventSource, CGEventSourceStateID},
 };
-use core_graphics::event_source::{CGEventSource, CGEventSourceStateID};
 use futures_core::Stream;
-use input_event::{Event, KeyboardEvent, PointerEvent, BTN_LEFT, BTN_MIDDLE, BTN_RIGHT};
+use input_event::{BTN_LEFT, BTN_MIDDLE, BTN_RIGHT, Event, KeyboardEvent, PointerEvent};
 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::{ready, Context, Poll};
-use std::thread::{self};
-use tokio::sync::mpsc::{self, Receiver, Sender};
-use tokio::sync::{oneshot, Mutex};
+use std::{
+    collections::HashSet,
+    ffi::{CString, c_char},
+    pin::Pin,
+    sync::Arc,
+    task::{Context, Poll, ready},
+    thread::{self},
+};
+use tokio::sync::{
+    Mutex,
+    mpsc::{self, Receiver, Sender},
+    oneshot,
+};
 
 #[derive(Debug, Default)]
 struct Bounds {
@@ -37,9 +46,16 @@ struct Bounds {
 
 #[derive(Debug)]
 struct InputCaptureState {
+    /// active capture positions
     active_clients: Lazy<HashSet<Position>>,
+    /// the currently entered capture position, if any
     current_pos: Option<Position>,
+    /// position where the cursor was captured
+    enter_position: Option<CGPoint>,
+    /// bounds of the input capture area
     bounds: Bounds,
+    /// current state of modifier keys
+    modifier_state: XMods,
 }
 
 #[derive(Debug)]
@@ -56,7 +72,9 @@ impl InputCaptureState {
         let mut res = Self {
             active_clients: Lazy::new(HashSet::new),
             current_pos: None,
+            enter_position: None,
             bounds: Bounds::default(),
+            modifier_state: Default::default(),
         };
         res.update_bounds()?;
         Ok(res)
@@ -96,45 +114,34 @@ impl InputCaptureState {
         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;
+    /// start the input capture by
+    fn start_capture(&mut self, event: &CGEvent, position: Position) -> Result<(), CaptureError> {
+        let mut location = event.location();
+        let edge_offset = 1.0;
+        // move cursor location to display bounds
+        match position {
+            Position::Left => location.x = self.bounds.xmin + edge_offset,
+            Position::Right => location.x = self.bounds.xmax - edge_offset,
+            Position::Top => location.y = self.bounds.ymin + edge_offset,
+            Position::Bottom => location.y = self.bounds.ymax - edge_offset,
+        };
+        self.enter_position = Some(location);
+        self.reset_cursor()
+    }
 
-            // 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;
+    /// resets the cursor to the position, where the capture started
+    fn reset_cursor(&mut self) -> Result<(), CaptureError> {
+        let pos = self.enter_position.expect("capture active");
+        log::trace!("Resetting cursor position to: {}, {}", pos.x, pos.y);
+        CGDisplay::warp_mouse_cursor_position(pos).map_err(CaptureError::WarpCursor)
+    }
 
-            let mut new_x = location.x + delta_x;
-            let mut new_y = location.y + delta_y;
+    fn hide_cursor(&self) -> Result<(), CaptureError> {
+        CGDisplay::hide_cursor(&CGDisplay::main()).map_err(CaptureError::CoreGraphics)
+    }
 
-            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)
+    fn show_cursor(&self) -> Result<(), CaptureError> {
+        CGDisplay::show_cursor(&CGDisplay::main()).map_err(CaptureError::CoreGraphics)
     }
 
     async fn handle_producer_event(
@@ -145,15 +152,13 @@ impl InputCaptureState {
         match producer_event {
             ProducerEvent::Release => {
                 if self.current_pos.is_some() {
-                    CGDisplay::show_cursor(&CGDisplay::main())
-                        .map_err(CaptureError::CoreGraphics)?;
+                    self.show_cursor()?;
                     self.current_pos = None;
                 }
             }
             ProducerEvent::Grab(pos) => {
                 if self.current_pos.is_none() {
-                    CGDisplay::hide_cursor(&CGDisplay::main())
-                        .map_err(CaptureError::CoreGraphics)?;
+                    self.hide_cursor()?;
                     self.current_pos = Some(pos);
                 }
             }
@@ -163,8 +168,7 @@ impl InputCaptureState {
             ProducerEvent::Destroy(p) => {
                 if let Some(current) = self.current_pos {
                     if current == p {
-                        CGDisplay::show_cursor(&CGDisplay::main())
-                            .map_err(CaptureError::CoreGraphics)?;
+                        self.show_cursor()?;
                         self.current_pos = None;
                     };
                 }
@@ -180,6 +184,7 @@ fn get_events(
     ev_type: &CGEventType,
     ev: &CGEvent,
     result: &mut Vec<CaptureEvent>,
+    modifier_state: &mut XMods,
 ) -> Result<(), CaptureError> {
     fn map_pointer_event(ev: &CGEvent) -> PointerEvent {
         PointerEvent::Motion {
@@ -215,29 +220,42 @@ fn get_events(
             })));
         }
         CGEventType::FlagsChanged => {
-            let mut mods = XMods::empty();
+            let mut depressed = XMods::empty();
             let mut mods_locked = XMods::empty();
             let cg_flags = ev.get_flags();
 
             if cg_flags.contains(CGEventFlags::CGEventFlagShift) {
-                mods |= XMods::ShiftMask;
+                depressed |= XMods::ShiftMask;
             }
             if cg_flags.contains(CGEventFlags::CGEventFlagControl) {
-                mods |= XMods::ControlMask;
+                depressed |= XMods::ControlMask;
             }
             if cg_flags.contains(CGEventFlags::CGEventFlagAlternate) {
-                mods |= XMods::Mod1Mask;
+                depressed |= XMods::Mod1Mask;
             }
             if cg_flags.contains(CGEventFlags::CGEventFlagCommand) {
-                mods |= XMods::Mod4Mask;
+                depressed |= XMods::Mod4Mask;
             }
             if cg_flags.contains(CGEventFlags::CGEventFlagAlphaShift) {
-                mods |= XMods::LockMask;
+                depressed |= XMods::LockMask;
                 mods_locked |= XMods::LockMask;
             }
 
+            // check if pressed or released
+            let state = if depressed > *modifier_state { 1 } else { 0 };
+            *modifier_state = depressed;
+
+            if let Ok(key) = map_key(ev) {
+                let key_event = CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Key {
+                    time: 0,
+                    key,
+                    state,
+                }));
+                result.push(key_event);
+            }
+
             let modifier_event = KeyboardEvent::Modifiers {
-                depressed: mods.bits(),
+                depressed: depressed.bits(),
                 latched: 0,
                 locked: mods_locked.bits(),
                 group: 0,
@@ -300,21 +318,47 @@ fn get_events(
             })))
         }
         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,
-                })));
+            if ev.get_integer_value_field(EventField::SCROLL_WHEEL_EVENT_IS_CONTINUOUS) != 0 {
+                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,
+                    })));
+                }
+            } else {
+                // line based scrolling
+                const LINES_PER_STEP: i32 = 3;
+                const V120_STEPS_PER_LINE: i32 = 120 / LINES_PER_STEP;
+                let v = ev.get_integer_value_field(EventField::SCROLL_WHEEL_EVENT_DELTA_AXIS_1);
+                let h = ev.get_integer_value_field(EventField::SCROLL_WHEEL_EVENT_DELTA_AXIS_2);
+                if v != 0 {
+                    result.push(CaptureEvent::Input(Event::Pointer(
+                        PointerEvent::AxisDiscrete120 {
+                            axis: 0, // Vertical
+                            value: V120_STEPS_PER_LINE * v as i32,
+                        },
+                    )));
+                }
+                if h != 0 {
+                    result.push(CaptureEvent::Input(Event::Pointer(
+                        PointerEvent::AxisDiscrete120 {
+                            axis: 1, // Horizontal
+                            value: V120_STEPS_PER_LINE * h as i32,
+                        },
+                    )));
+                }
             }
         }
         _ => (),
@@ -348,7 +392,7 @@ fn create_event_tap<'a>(
         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 capture_position = None;
             let mut res_events = vec![];
 
             if matches!(
@@ -365,22 +409,34 @@ fn create_event_tap<'a>(
 
             // 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| {
+                capture_position = Some(current_pos);
+                get_events(
+                    &event_type,
+                    cg_ev,
+                    &mut res_events,
+                    &mut state.modifier_state,
+                )
+                .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}");
-                    })
+                if matches!(
+                    event_type,
+                    CGEventType::MouseMoved
+                        | CGEventType::LeftMouseDragged
+                        | CGEventType::RightMouseDragged
+                        | CGEventType::OtherMouseDragged
+                ) {
+                    state.reset_cursor().unwrap_or_else(|e| log::warn!("{e}"));
                 }
-            }
-            // Did we cross a barrier?
-            else if matches!(event_type, CGEventType::MouseMoved) {
+            } else if matches!(event_type, CGEventType::MouseMoved) {
+                // Did we cross a barrier?
                 if let Some(new_pos) = state.crossed(cg_ev) {
-                    pos = Some(new_pos);
+                    capture_position = Some(new_pos);
+                    state
+                        .start_capture(cg_ev, new_pos)
+                        .unwrap_or_else(|e| log::warn!("{e}"));
                     res_events.push(CaptureEvent::Begin);
                     notify_tx
                         .blocking_send(ProducerEvent::Grab(new_pos))
@@ -388,17 +444,19 @@ fn create_event_tap<'a>(
                 }
             }
 
-            if let Some(pos) = pos {
+            if let Some(pos) = capture_position {
                 res_events.iter().for_each(|e| {
-                    event_tx
-                        .blocking_send((pos, *e))
-                        .expect("Failed to send event");
+                    // error must be ignored, since the event channel
+                    // may already be closed when the InputCapture instance is dropped.
+                    let _ = event_tx.blocking_send((pos, *e));
                 });
-                // Returning None should stop the event from being processed
+                // Returning Drop should stop the event from being processed
                 // but core fundation still returns the event
                 cg_ev.set_type(CGEventType::Null);
+                CallbackResult::Drop
+            } else {
+                CallbackResult::Keep
             }
-            Some(cg_ev.to_owned())
         };
 
     let tap = CGEventTap::new(
@@ -411,7 +469,7 @@ fn create_event_tap<'a>(
     .map_err(|_| MacosCaptureCreationError::EventTapCreation)?;
 
     let tap_source: CFRunLoopSource = tap
-        .mach_port
+        .mach_port()
         .create_runloop_source(0)
         .expect("Failed creating loop source");
 
@@ -426,8 +484,8 @@ 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>>,
+    ready: std::sync::mpsc::Sender<Result<CFRunLoop, MacosCaptureCreationError>>,
+    exit: oneshot::Sender<()>,
 ) {
     let _tap = match create_event_tap(client_state, notify_tx, event_tx) {
         Err(e) => {
@@ -435,18 +493,22 @@ fn event_tap_thread(
             return;
         }
         Ok(tap) => {
-            ready.send(Ok(())).expect("channel closed");
+            let run_loop = CFRunLoop::get_current();
+            ready.send(Ok(run_loop)).expect("channel closed");
             tap
         }
     };
+    log::debug!("running CFRunLoop...");
     CFRunLoop::run_current();
+    log::debug!("event tap thread exiting!...");
 
-    let _ = exit.send(Err("tap thread exited"));
+    let _ = exit.send(());
 }
 
 pub struct MacOSInputCapture {
     event_rx: Receiver<(Position, CaptureEvent)>,
     notify_tx: Sender<ProducerEvent>,
+    run_loop: CFRunLoop,
 }
 
 impl MacOSInputCapture {
@@ -475,36 +537,41 @@ impl MacOSInputCapture {
         });
 
         // wait for event tap creation result
-        ready_rx.recv().expect("channel closed")?;
+        let run_loop = 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 Some(producer_event) = producer_event else {
+                            break;
+                        };
                         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;
-                        }
-                    }
+                    _ = &mut tap_exit_rx => break,
                 }
             }
+            // show cursor
+            let _ = CGDisplay::show_cursor(&CGDisplay::main());
         });
 
         Ok(Self {
             event_rx,
             notify_tx,
+            run_loop,
         })
     }
 }
 
+impl Drop for MacOSInputCapture {
+    fn drop(&mut self) {
+        self.run_loop.stop();
+    }
+}
+
 #[async_trait]
 impl Capture for MacOSInputCapture {
     async fn create(&mut self, pos: Position) -> Result<(), CaptureError> {
@@ -579,6 +646,7 @@ unsafe fn configure_cf_settings() -> Result<(), MacosCaptureCreationError> {
     let event_source = CGEventSource::new(CGEventSourceStateID::CombinedSessionState)
         .map_err(|_| MacosCaptureCreationError::EventSourceCreation)?;
     CGEventSourceSetLocalEventsSuppressionInterval(event_source, 0.05);
+    // FIXME Memory Leak
 
     // This is a private settings that allows the cursor to be hidden while in the background.
     // It is used by Barrier and other apps.

input-capture/src/windows.rs

@@ -1,94 +1,36 @@
 use async_trait::async_trait;
 use core::task::{Context, Poll};
+use event_thread::EventThread;
 use futures::Stream;
-use once_cell::unsync::Lazy;
+use std::pin::Pin;
 
-use std::collections::HashSet;
-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::{mpsc, Mutex};
 use std::task::ready;
-use std::{pin::Pin, thread};
-use tokio::sync::mpsc::{channel, Receiver, Sender};
-use windows::core::{w, PCWSTR};
-use windows::Win32::Foundation::{FALSE, HINSTANCE, HWND, LPARAM, LRESULT, RECT, WPARAM};
-use windows::Win32::Graphics::Gdi::{
-    EnumDisplayDevicesW, EnumDisplaySettingsW, DEVMODEW, DISPLAY_DEVICEW,
-    DISPLAY_DEVICE_ATTACHED_TO_DESKTOP, ENUM_CURRENT_SETTINGS,
-};
-use windows::Win32::System::LibraryLoader::GetModuleHandleW;
-use windows::Win32::System::Threading::GetCurrentThreadId;
-
-use windows::Win32::UI::WindowsAndMessaging::{
-    CallNextHookEx, CreateWindowExW, DispatchMessageW, GetMessageW, PostThreadMessageW,
-    RegisterClassW, SetWindowsHookExW, TranslateMessage, EDD_GET_DEVICE_INTERFACE_NAME, HHOOK,
-    HMENU, HOOKPROC, KBDLLHOOKSTRUCT, LLKHF_EXTENDED, MSG, MSLLHOOKSTRUCT, WH_KEYBOARD_LL,
-    WH_MOUSE_LL, WINDOW_STYLE, WM_DISPLAYCHANGE, WM_KEYDOWN, WM_KEYUP, WM_LBUTTONDOWN,
-    WM_LBUTTONUP, WM_MBUTTONDOWN, WM_MBUTTONUP, WM_MOUSEMOVE, WM_MOUSEWHEEL, WM_RBUTTONDOWN,
-    WM_RBUTTONUP, WM_SYSKEYDOWN, WM_SYSKEYUP, WM_USER, WM_XBUTTONDOWN, WM_XBUTTONUP, WNDCLASSW,
-    WNDPROC,
-};
-
-use input_event::{
-    scancode::{self, Linux},
-    Event, KeyboardEvent, PointerEvent, BTN_BACK, BTN_FORWARD, BTN_LEFT, BTN_MIDDLE, BTN_RIGHT,
-};
+use tokio::sync::mpsc::{Receiver, channel};
 
 use super::{Capture, CaptureError, CaptureEvent, Position};
 
-enum Request {
-    Create(Position),
-    Destroy(Position),
-}
+mod display_util;
+mod event_thread;
 
 pub struct WindowsInputCapture {
     event_rx: Receiver<(Position, CaptureEvent)>,
-    msg_thread: Option<std::thread::JoinHandle<()>>,
-}
-
-enum EventType {
-    Request = 0,
-    Release = 1,
-    Exit = 2,
-}
-
-unsafe fn signal_message_thread(event_type: EventType) {
-    if let Some(event_tid) = get_event_tid() {
-        PostThreadMessageW(event_tid, WM_USER, WPARAM(event_type as usize), LPARAM(0)).unwrap();
-    } else {
-        panic!();
-    }
+    event_thread: EventThread,
 }
 
 #[async_trait]
 impl Capture for WindowsInputCapture {
     async fn create(&mut self, pos: Position) -> Result<(), CaptureError> {
-        unsafe {
-            {
-                let mut requests = REQUEST_BUFFER.lock().unwrap();
-                requests.push(Request::Create(pos));
-            }
-            signal_message_thread(EventType::Request);
-        }
+        self.event_thread.create(pos);
         Ok(())
     }
 
     async fn destroy(&mut self, pos: Position) -> Result<(), CaptureError> {
-        unsafe {
-            {
-                let mut requests = REQUEST_BUFFER.lock().unwrap();
-                requests.push(Request::Destroy(pos));
-            }
-            signal_message_thread(EventType::Request);
-        }
+        self.event_thread.destroy(pos);
         Ok(())
     }
 
     async fn release(&mut self) -> Result<(), CaptureError> {
-        unsafe { signal_message_thread(EventType::Release) };
+        self.event_thread.release_capture();
         Ok(())
     }
 
@@ -97,519 +39,13 @@ impl Capture for WindowsInputCapture {
     }
 }
 
-static mut REQUEST_BUFFER: Mutex<Vec<Request>> = Mutex::new(Vec::new());
-static mut ACTIVE_CLIENT: Option<Position> = None;
-static mut CLIENTS: Lazy<HashSet<Position>> = Lazy::new(HashSet::new);
-static mut EVENT_TX: Option<Sender<(Position, CaptureEvent)>> = None;
-static mut EVENT_THREAD_ID: AtomicU32 = AtomicU32::new(0);
-unsafe fn set_event_tid(tid: u32) {
-    EVENT_THREAD_ID.store(tid, Ordering::SeqCst);
-}
-unsafe fn get_event_tid() -> Option<u32> {
-    match EVENT_THREAD_ID.load(Ordering::SeqCst) {
-        0 => None,
-        id => Some(id),
-    }
-}
-
-static mut ENTRY_POINT: (i32, i32) = (0, 0);
-
-fn to_mouse_event(wparam: WPARAM, lparam: LPARAM) -> Option<PointerEvent> {
-    let mouse_low_level: MSLLHOOKSTRUCT = unsafe { *(lparam.0 as *const MSLLHOOKSTRUCT) };
-    match wparam {
-        WPARAM(p) if p == WM_LBUTTONDOWN as usize => Some(PointerEvent::Button {
-            time: 0,
-            button: BTN_LEFT,
-            state: 1,
-        }),
-        WPARAM(p) if p == WM_MBUTTONDOWN as usize => Some(PointerEvent::Button {
-            time: 0,
-            button: BTN_MIDDLE,
-            state: 1,
-        }),
-        WPARAM(p) if p == WM_RBUTTONDOWN as usize => Some(PointerEvent::Button {
-            time: 0,
-            button: BTN_RIGHT,
-            state: 1,
-        }),
-        WPARAM(p) if p == WM_LBUTTONUP as usize => Some(PointerEvent::Button {
-            time: 0,
-            button: BTN_LEFT,
-            state: 0,
-        }),
-        WPARAM(p) if p == WM_MBUTTONUP as usize => Some(PointerEvent::Button {
-            time: 0,
-            button: BTN_MIDDLE,
-            state: 0,
-        }),
-        WPARAM(p) if p == WM_RBUTTONUP as usize => Some(PointerEvent::Button {
-            time: 0,
-            button: BTN_RIGHT,
-            state: 0,
-        }),
-        WPARAM(p) if p == WM_MOUSEMOVE as usize => unsafe {
-            let (x, y) = (mouse_low_level.pt.x, mouse_low_level.pt.y);
-            let (ex, ey) = ENTRY_POINT;
-            let (dx, dy) = (x - ex, y - ey);
-            let (dx, dy) = (dx as f64, dy as f64);
-            Some(PointerEvent::Motion { time: 0, dx, dy })
-        },
-        WPARAM(p) if p == WM_MOUSEWHEEL as usize => Some(PointerEvent::AxisDiscrete120 {
-            axis: 0,
-            value: -(mouse_low_level.mouseData as i32 >> 16),
-        }),
-        WPARAM(p) if p == WM_XBUTTONDOWN as usize || p == WM_XBUTTONUP as usize => {
-            let hb = mouse_low_level.mouseData >> 16;
-            let button = match hb {
-                1 => BTN_BACK,
-                2 => BTN_FORWARD,
-                _ => {
-                    log::warn!("unknown mouse button");
-                    return None;
-                }
-            };
-            Some(PointerEvent::Button {
-                time: 0,
-                button,
-                state: if p == WM_XBUTTONDOWN as usize { 1 } else { 0 },
-            })
-        }
-        w => {
-            log::warn!("unknown mouse event: {w:?}");
-            None
-        }
-    }
-}
-
-unsafe fn to_key_event(wparam: WPARAM, lparam: LPARAM) -> Option<KeyboardEvent> {
-    let kybrdllhookstruct: KBDLLHOOKSTRUCT = *(lparam.0 as *const KBDLLHOOKSTRUCT);
-    let mut scan_code = kybrdllhookstruct.scanCode;
-    log::trace!("scan_code: {scan_code}");
-    if kybrdllhookstruct.flags.contains(LLKHF_EXTENDED) {
-        scan_code |= 0xE000;
-    }
-    let Ok(win_scan_code) = scancode::Windows::try_from(scan_code) else {
-        log::warn!("failed to translate to windows scancode: {scan_code}");
-        return None;
-    };
-    log::trace!("windows_scan: {win_scan_code:?}");
-    let Ok(linux_scan_code): Result<Linux, ()> = win_scan_code.try_into() else {
-        log::warn!("failed to translate into linux scancode: {win_scan_code:?}");
-        return None;
-    };
-    log::trace!("windows_scan: {linux_scan_code:?}");
-    let scan_code = linux_scan_code as u32;
-    match wparam {
-        WPARAM(p) if p == WM_KEYDOWN as usize => Some(KeyboardEvent::Key {
-            time: 0,
-            key: scan_code,
-            state: 1,
-        }),
-        WPARAM(p) if p == WM_KEYUP as usize => Some(KeyboardEvent::Key {
-            time: 0,
-            key: scan_code,
-            state: 0,
-        }),
-        WPARAM(p) if p == WM_SYSKEYDOWN as usize => Some(KeyboardEvent::Key {
-            time: 0,
-            key: scan_code,
-            state: 1,
-        }),
-        WPARAM(p) if p == WM_SYSKEYUP as usize => Some(KeyboardEvent::Key {
-            time: 0,
-            key: scan_code,
-            state: 1,
-        }),
-        _ => None,
-    }
-}
-
-///
-/// clamp point to display bounds
-///
-/// # Arguments
-///
-/// * `prev_point`: coordinates, the cursor was before entering, within bounds of a display
-/// * `entry_point`: point to clamp
-///
-/// returns: (i32, i32), the corrected entry point
-///
-fn clamp_to_display_bounds(prev_point: (i32, i32), point: (i32, i32)) -> (i32, i32) {
-    /* find display where movement came from */
-    let display_regions = unsafe { get_display_regions() };
-    let display = display_regions
-        .iter()
-        .find(|&d| is_within_dp_region(prev_point, d))
-        .unwrap();
-
-    /* clamp to bounds (inclusive) */
-    let (x, y) = point;
-    let (min_x, max_x) = (display.left, display.right - 1);
-    let (min_y, max_y) = (display.top, display.bottom - 1);
-    (x.clamp(min_x, max_x), y.clamp(min_y, max_y))
-}
-
-unsafe fn send_blocking(event: CaptureEvent) {
-    if let Some(active) = ACTIVE_CLIENT {
-        block_on(async move {
-            let _ = EVENT_TX.as_ref().unwrap().send((active, event)).await;
-        });
-    }
-}
-
-unsafe fn check_client_activation(wparam: WPARAM, lparam: LPARAM) -> bool {
-    if wparam.0 != WM_MOUSEMOVE as usize {
-        return ACTIVE_CLIENT.is_some();
-    }
-    let mouse_low_level: MSLLHOOKSTRUCT = *(lparam.0 as *const MSLLHOOKSTRUCT);
-    static mut PREV_POS: Option<(i32, i32)> = None;
-    let curr_pos = (mouse_low_level.pt.x, mouse_low_level.pt.y);
-    let prev_pos = PREV_POS.unwrap_or(curr_pos);
-    PREV_POS.replace(curr_pos);
-
-    /* next event is the first actual event */
-    let ret = ACTIVE_CLIENT.is_some();
-
-    /* client already active, no need to check */
-    if ACTIVE_CLIENT.is_some() {
-        return ret;
-    }
-
-    /* check if a client was activated */
-    let Some(pos) = entered_barrier(prev_pos, curr_pos, get_display_regions()) else {
-        return ret;
-    };
-
-    /* check if a client is registered for the barrier */
-    if !CLIENTS.contains(&pos) {
-        return ret;
-    }
-
-    /* update active client and entry point */
-    ACTIVE_CLIENT.replace(pos);
-    ENTRY_POINT = clamp_to_display_bounds(prev_pos, curr_pos);
-
-    /* notify main thread */
-    log::debug!("ENTERED @ {prev_pos:?} -> {curr_pos:?}");
-    send_blocking(CaptureEvent::Begin);
-
-    ret
-}
-
-unsafe extern "system" fn mouse_proc(ncode: i32, wparam: WPARAM, lparam: LPARAM) -> LRESULT {
-    let active = check_client_activation(wparam, lparam);
-
-    /* no client was active */
-    if !active {
-        return CallNextHookEx(HHOOK::default(), ncode, wparam, lparam);
-    }
-
-    /* get active client if any */
-    let Some(pos) = ACTIVE_CLIENT else {
-        return LRESULT(1);
-    };
-
-    /* convert to lan-mouse event */
-    let Some(pointer_event) = to_mouse_event(wparam, lparam) else {
-        return LRESULT(1);
-    };
-    let event = (pos, CaptureEvent::Input(Event::Pointer(pointer_event)));
-
-    /* notify mainthread (drop events if sending too fast) */
-    if let Err(e) = EVENT_TX.as_ref().unwrap().try_send(event) {
-        log::warn!("e: {e}");
-    }
-
-    /* don't pass event to applications */
-    LRESULT(1)
-}
-
-unsafe extern "system" fn kybrd_proc(ncode: i32, wparam: WPARAM, lparam: LPARAM) -> LRESULT {
-    /* get active client if any */
-    let Some(client) = ACTIVE_CLIENT else {
-        return CallNextHookEx(HHOOK::default(), ncode, wparam, lparam);
-    };
-
-    /* convert to key event */
-    let Some(key_event) = to_key_event(wparam, lparam) else {
-        return LRESULT(1);
-    };
-    let event = (client, CaptureEvent::Input(Event::Keyboard(key_event)));
-
-    if let Err(e) = EVENT_TX.as_ref().unwrap().try_send(event) {
-        log::warn!("e: {e}");
-    }
-
-    /* don't pass event to applications */
-    LRESULT(1)
-}
-
-unsafe extern "system" fn window_proc(
-    _hwnd: HWND,
-    uint: u32,
-    _wparam: WPARAM,
-    _lparam: LPARAM,
-) -> LRESULT {
-    match uint {
-        x if x == WM_DISPLAYCHANGE => {
-            log::debug!("display resolution changed");
-            DISPLAY_RESOLUTION_CHANGED = true;
-        }
-        _ => {}
-    }
-    LRESULT(1)
-}
-
-fn enumerate_displays() -> Vec<RECT> {
-    unsafe {
-        let mut display_rects = vec![];
-        let mut devices = vec![];
-        for i in 0.. {
-            let mut device: DISPLAY_DEVICEW = std::mem::zeroed();
-            device.cb = std::mem::size_of::<DISPLAY_DEVICEW>() as u32;
-            let ret = EnumDisplayDevicesW(None, i, &mut device, EDD_GET_DEVICE_INTERFACE_NAME);
-            if ret == FALSE {
-                break;
-            }
-            if device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP != 0 {
-                devices.push(device.DeviceName);
-            }
-        }
-        for device in devices {
-            let mut dev_mode: DEVMODEW = std::mem::zeroed();
-            dev_mode.dmSize = std::mem::size_of::<DEVMODEW>() as u16;
-            let ret = EnumDisplaySettingsW(
-                PCWSTR::from_raw(&device as *const _),
-                ENUM_CURRENT_SETTINGS,
-                &mut dev_mode,
-            );
-            if ret == FALSE {
-                log::warn!("no display mode");
-            }
-
-            let pos = dev_mode.Anonymous1.Anonymous2.dmPosition;
-            let (x, y) = (pos.x, pos.y);
-            let (width, height) = (dev_mode.dmPelsWidth, dev_mode.dmPelsHeight);
-
-            display_rects.push(RECT {
-                left: x,
-                right: x + width as i32,
-                top: y,
-                bottom: y + height as i32,
-            });
-        }
-        display_rects
-    }
-}
-
-static mut DISPLAY_RESOLUTION_CHANGED: bool = true;
-
-unsafe fn get_display_regions() -> &'static Vec<RECT> {
-    static mut DISPLAYS: Vec<RECT> = vec![];
-    if DISPLAY_RESOLUTION_CHANGED {
-        DISPLAYS = enumerate_displays();
-        DISPLAY_RESOLUTION_CHANGED = false;
-        log::debug!("displays: {DISPLAYS:?}");
-    }
-    &*addr_of!(DISPLAYS)
-}
-
-fn is_within_dp_region(point: (i32, i32), display: &RECT) -> bool {
-    [
-        Position::Left,
-        Position::Right,
-        Position::Top,
-        Position::Bottom,
-    ]
-    .iter()
-    .all(|&pos| is_within_dp_boundary(point, display, pos))
-}
-fn is_within_dp_boundary(point: (i32, i32), display: &RECT, pos: Position) -> bool {
-    let (x, y) = point;
-    match pos {
-        Position::Left => display.left <= x,
-        Position::Right => display.right > x,
-        Position::Top => display.top <= y,
-        Position::Bottom => display.bottom > y,
-    }
-}
-
-/// returns whether the given position is within the display bounds with respect to the given
-/// barrier position
-///
-/// # Arguments
-///
-/// * `x`:
-/// * `y`:
-/// * `displays`:
-/// * `pos`:
-///
-/// returns: bool
-///
-fn in_bounds(point: (i32, i32), displays: &[RECT], pos: Position) -> bool {
-    displays
-        .iter()
-        .any(|d| is_within_dp_boundary(point, d, pos))
-}
-
-fn in_display_region(point: (i32, i32), displays: &[RECT]) -> bool {
-    displays.iter().any(|d| is_within_dp_region(point, d))
-}
-
-fn moved_across_boundary(
-    prev_pos: (i32, i32),
-    curr_pos: (i32, i32),
-    displays: &[RECT],
-    pos: Position,
-) -> bool {
-    /* was within bounds, but is not anymore */
-    in_display_region(prev_pos, displays) && !in_bounds(curr_pos, displays, pos)
-}
-
-fn entered_barrier(
-    prev_pos: (i32, i32),
-    curr_pos: (i32, i32),
-    displays: &[RECT],
-) -> Option<Position> {
-    [
-        Position::Left,
-        Position::Right,
-        Position::Top,
-        Position::Bottom,
-    ]
-    .into_iter()
-    .find(|&pos| moved_across_boundary(prev_pos, curr_pos, displays, pos))
-}
-
-fn get_msg() -> Option<MSG> {
-    unsafe {
-        let mut msg = std::mem::zeroed();
-        let ret = GetMessageW(addr_of_mut!(msg), HWND::default(), 0, 0);
-        match ret.0 {
-            0 => None,
-            x if x > 0 => Some(msg),
-            _ => panic!("error in GetMessageW"),
-        }
-    }
-}
-
-static WINDOW_CLASS_REGISTERED: AtomicBool = AtomicBool::new(false);
-
-fn message_thread(ready_tx: mpsc::Sender<()>) {
-    unsafe {
-        set_event_tid(GetCurrentThreadId());
-        ready_tx.send(()).expect("channel closed");
-        let mouse_proc: HOOKPROC = Some(mouse_proc);
-        let kybrd_proc: HOOKPROC = Some(kybrd_proc);
-        let window_proc: WNDPROC = Some(window_proc);
-
-        /* register hooks */
-        let _ = SetWindowsHookExW(WH_MOUSE_LL, mouse_proc, HINSTANCE::default(), 0).unwrap();
-        let _ = SetWindowsHookExW(WH_KEYBOARD_LL, kybrd_proc, HINSTANCE::default(), 0).unwrap();
-
-        let instance = GetModuleHandleW(None).unwrap();
-        let window_class: WNDCLASSW = WNDCLASSW {
-            lpfnWndProc: window_proc,
-            hInstance: instance.into(),
-            lpszClassName: w!("lan-mouse-message-window-class"),
-            ..Default::default()
-        };
-
-        if WINDOW_CLASS_REGISTERED
-            .compare_exchange(false, true, Ordering::SeqCst, Ordering::SeqCst)
-            .is_ok()
-        {
-            /* 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 */
-        CreateWindowExW(
-            Default::default(),
-            w!("lan-mouse-message-window-class"),
-            w!("lan-mouse-msg-window"),
-            WINDOW_STYLE::default(),
-            0,
-            0,
-            0,
-            0,
-            HWND::default(),
-            HMENU::default(),
-            instance,
-            None,
-        )
-        .expect("CreateWindowExW");
-
-        /* run message loop */
-        loop {
-            // mouse / keybrd proc do not actually return a message
-            let Some(msg) = get_msg() else {
-                break;
-            };
-            if msg.hwnd.0.is_null() {
-                /* messages sent via PostThreadMessage */
-                match msg.wParam.0 {
-                    x if x == EventType::Exit as usize => break,
-                    x if x == EventType::Release as usize => {
-                        ACTIVE_CLIENT.take();
-                    }
-                    x if x == EventType::Request as usize => {
-                        let requests = {
-                            let mut res = vec![];
-                            let mut requests = REQUEST_BUFFER.lock().unwrap();
-                            for request in requests.drain(..) {
-                                res.push(request);
-                            }
-                            res
-                        };
-
-                        for request in requests {
-                            update_clients(request)
-                        }
-                    }
-                    _ => {}
-                }
-            } else {
-                /* other messages for window_procs */
-                let _ = TranslateMessage(&msg);
-                DispatchMessageW(&msg);
-            }
-        }
-    }
-}
-
-fn update_clients(request: Request) {
-    match request {
-        Request::Create(pos) => {
-            unsafe { CLIENTS.insert(pos) };
-        }
-        Request::Destroy(pos) => unsafe {
-            if let Some(active_pos) = ACTIVE_CLIENT {
-                if pos == active_pos {
-                    let _ = ACTIVE_CLIENT.take();
-                }
-            }
-            CLIENTS.remove(&pos);
-        },
-    }
-}
-
 impl WindowsInputCapture {
     pub(crate) fn new() -> Self {
-        unsafe {
-            let (tx, rx) = channel(10);
-            EVENT_TX.replace(tx);
-            let (ready_tx, ready_rx) = mpsc::channel();
-            let msg_thread = Some(thread::spawn(|| message_thread(ready_tx)));
-            /* wait for thread to set its id */
-            ready_rx.recv().expect("channel closed");
-            Self {
-                msg_thread,
-                event_rx: rx,
-            }
+        let (event_tx, event_rx) = channel(10);
+        let event_thread = EventThread::new(event_tx);
+        Self {
+            event_thread,
+            event_rx,
         }
     }
 }
@@ -623,10 +59,3 @@ impl Stream for WindowsInputCapture {
         }
     }
 }
-
-impl Drop for WindowsInputCapture {
-    fn drop(&mut self) {
-        unsafe { signal_message_thread(EventType::Exit) };
-        let _ = self.msg_thread.take().unwrap().join();
-    }
-}

input-capture/src/windows/display_util.rs

@@ -0,0 +1,99 @@
+use windows::Win32::Foundation::RECT;
+
+use crate::Position;
+
+fn is_within_dp_region(point: (i32, i32), display: &RECT) -> bool {
+    [
+        Position::Left,
+        Position::Right,
+        Position::Top,
+        Position::Bottom,
+    ]
+    .iter()
+    .all(|&pos| is_within_dp_boundary(point, display, pos))
+}
+
+fn is_within_dp_boundary(point: (i32, i32), display: &RECT, pos: Position) -> bool {
+    let (x, y) = point;
+    match pos {
+        Position::Left => display.left <= x,
+        Position::Right => display.right > x,
+        Position::Top => display.top <= y,
+        Position::Bottom => display.bottom > y,
+    }
+}
+
+/// returns whether the given position is within the display bounds with respect to the given
+/// barrier position
+///
+/// # Arguments
+///
+/// * `x`:
+/// * `y`:
+/// * `displays`:
+/// * `pos`:
+///
+/// returns: bool
+///
+fn in_bounds(point: (i32, i32), displays: &[RECT], pos: Position) -> bool {
+    displays
+        .iter()
+        .any(|d| is_within_dp_boundary(point, d, pos))
+}
+
+fn in_display_region(point: (i32, i32), displays: &[RECT]) -> bool {
+    displays.iter().any(|d| is_within_dp_region(point, d))
+}
+
+fn moved_across_boundary(
+    prev_pos: (i32, i32),
+    curr_pos: (i32, i32),
+    displays: &[RECT],
+    pos: Position,
+) -> bool {
+    /* was within bounds, but is not anymore */
+    in_display_region(prev_pos, displays) && !in_bounds(curr_pos, displays, pos)
+}
+
+pub(crate) fn entered_barrier(
+    prev_pos: (i32, i32),
+    curr_pos: (i32, i32),
+    displays: &[RECT],
+) -> Option<Position> {
+    [
+        Position::Left,
+        Position::Right,
+        Position::Top,
+        Position::Bottom,
+    ]
+    .into_iter()
+    .find(|&pos| moved_across_boundary(prev_pos, curr_pos, displays, pos))
+}
+
+///
+/// clamp point to display bounds
+///
+/// # Arguments
+///
+/// * `prev_point`: coordinates, the cursor was before entering, within bounds of a display
+/// * `entry_point`: point to clamp
+///
+/// returns: (i32, i32), the corrected entry point
+///
+pub(crate) fn clamp_to_display_bounds(
+    display_regions: &[RECT],
+    prev_point: (i32, i32),
+    point: (i32, i32),
+) -> (i32, i32) {
+    /* find display where movement came from */
+    let display = display_regions
+        .iter()
+        .find(|&d| is_within_dp_region(prev_point, d))
+        .unwrap();
+
+    /* clamp to bounds (inclusive) */
+    let (x, y) = point;
+    let (min_x, max_x) = (display.left, display.right - 1);
+    let (min_y, max_y) = (display.top, display.bottom - 1);
+    (x.clamp(min_x, max_x), y.clamp(min_y, max_y))
+}

input-capture/src/windows/event_thread.rs

@@ -0,0 +1,552 @@
+use std::cell::{Cell, RefCell};
+use std::collections::HashSet;
+use std::ptr::addr_of_mut;
+
+use std::default::Default;
+use std::sync::atomic::{AtomicBool, AtomicI32, Ordering};
+use std::sync::{Arc, Condvar, Mutex};
+use std::thread;
+use tokio::sync::mpsc::Sender;
+use tokio::sync::mpsc::error::TrySendError;
+use windows::Win32::Foundation::{FALSE, HWND, LPARAM, LRESULT, RECT, WPARAM};
+use windows::Win32::Graphics::Gdi::{
+    DEVMODEW, DISPLAY_DEVICE_ATTACHED_TO_DESKTOP, DISPLAY_DEVICEW, ENUM_CURRENT_SETTINGS,
+    EnumDisplayDevicesW, EnumDisplaySettingsW,
+};
+use windows::Win32::System::LibraryLoader::GetModuleHandleW;
+use windows::Win32::System::Threading::GetCurrentThreadId;
+use windows::core::{PCWSTR, w};
+
+use windows::Win32::UI::WindowsAndMessaging::{
+    CallNextHookEx, CreateWindowExW, DispatchMessageW, EDD_GET_DEVICE_INTERFACE_NAME, GetMessageW,
+    HOOKPROC, KBDLLHOOKSTRUCT, LLKHF_EXTENDED, MSG, MSLLHOOKSTRUCT, PostThreadMessageW,
+    RegisterClassW, SetWindowsHookExW, TranslateMessage, WH_KEYBOARD_LL, WH_MOUSE_LL, WINDOW_STYLE,
+    WM_DISPLAYCHANGE, WM_KEYDOWN, WM_KEYUP, WM_LBUTTONDOWN, WM_LBUTTONUP, WM_MBUTTONDOWN,
+    WM_MBUTTONUP, WM_MOUSEHWHEEL, WM_MOUSEMOVE, WM_MOUSEWHEEL, WM_RBUTTONDOWN, WM_RBUTTONUP,
+    WM_SYSKEYDOWN, WM_SYSKEYUP, WM_USER, WM_XBUTTONDOWN, WM_XBUTTONUP, WNDCLASSW, WNDPROC,
+};
+
+use input_event::{
+    BTN_BACK, BTN_FORWARD, BTN_LEFT, BTN_MIDDLE, BTN_RIGHT, Event, KeyboardEvent, PointerEvent,
+    scancode::{self, Linux},
+};
+
+use super::{CaptureEvent, Position, display_util};
+
+pub(crate) struct EventThread {
+    request_buffer: Arc<Mutex<Vec<ClientUpdate>>>,
+    thread: Option<thread::JoinHandle<()>>,
+    thread_id: u32,
+}
+
+impl EventThread {
+    pub(crate) fn new(event_tx: Sender<(Position, CaptureEvent)>) -> Self {
+        let request_buffer = Default::default();
+        let (thread, thread_id) = start(event_tx, Arc::clone(&request_buffer));
+        Self {
+            request_buffer,
+            thread: Some(thread),
+            thread_id,
+        }
+    }
+
+    pub(crate) fn release_capture(&self) {
+        self.signal(RequestType::Release);
+    }
+
+    pub(crate) fn create(&self, pos: Position) {
+        self.client_update(ClientUpdate::Create(pos));
+    }
+
+    pub(crate) fn destroy(&self, pos: Position) {
+        self.client_update(ClientUpdate::Destroy(pos));
+    }
+
+    fn exit(&self) {
+        self.signal(RequestType::Exit);
+    }
+
+    fn client_update(&self, request: ClientUpdate) {
+        {
+            let mut requests = self.request_buffer.lock().unwrap();
+            requests.push(request);
+        }
+        self.signal(RequestType::ClientUpdate);
+    }
+
+    fn signal(&self, event_type: RequestType) {
+        let id = self.thread_id;
+        unsafe { PostThreadMessageW(id, WM_USER, WPARAM(event_type as usize), LPARAM(0)).unwrap() };
+    }
+}
+
+impl Drop for EventThread {
+    fn drop(&mut self) {
+        self.exit();
+        let _ = self.thread.take().expect("thread").join();
+    }
+}
+
+enum RequestType {
+    ClientUpdate = 0,
+    Release = 1,
+    Exit = 2,
+}
+
+enum ClientUpdate {
+    Create(Position),
+    Destroy(Position),
+}
+
+fn blocking_send_event(pos: Position, event: CaptureEvent) {
+    EVENT_TX.with_borrow_mut(|tx| tx.as_mut().unwrap().blocking_send((pos, event)).unwrap())
+}
+
+fn try_send_event(
+    pos: Position,
+    event: CaptureEvent,
+) -> Result<(), TrySendError<(Position, CaptureEvent)>> {
+    EVENT_TX.with_borrow_mut(|tx| tx.as_mut().unwrap().try_send((pos, event)))
+}
+
+thread_local! {
+    /// all configured clients
+    static CLIENTS: RefCell<HashSet<Position>> = RefCell::new(HashSet::new());
+    /// currently active client
+    static ACTIVE_CLIENT: Cell<Option<Position>> = const { Cell::new(None) };
+    /// input event channel
+    static EVENT_TX: RefCell<Option<Sender<(Position, CaptureEvent)>>> = const { RefCell::new(None) };
+    /// position of barrier entry
+    static ENTRY_POINT: Cell<(i32, i32)> = const { Cell::new((0, 0)) };
+    /// previous mouse position
+    static PREV_POS: Cell<Option<(i32, i32)>> = const { Cell::new(None) };
+    /// displays and generation counter
+    static DISPLAYS: RefCell<(Vec<RECT>, i32)> = const { RefCell::new((Vec::new(), 0)) };
+}
+
+fn get_msg() -> Option<MSG> {
+    unsafe {
+        let mut msg = std::mem::zeroed();
+        let ret = GetMessageW(addr_of_mut!(msg), None, 0, 0);
+        match ret.0 {
+            0 => None,
+            x if x > 0 => Some(msg),
+            _ => panic!("error in GetMessageW"),
+        }
+    }
+}
+
+fn start(
+    event_tx: Sender<(Position, CaptureEvent)>,
+    request_buffer: Arc<Mutex<Vec<ClientUpdate>>>,
+) -> (thread::JoinHandle<()>, u32) {
+    /* condition variable to wait for thead id */
+    let thread_id = Arc::new((Condvar::new(), Mutex::new(None)));
+    let thread_id_ = Arc::clone(&thread_id);
+
+    let msg_thread = thread::spawn(|| start_routine(thread_id_, event_tx, request_buffer));
+
+    /* wait for thread to set its id */
+    let (cond, thread_id) = &*thread_id;
+    let mut thread_id = thread_id.lock().unwrap();
+    while (*thread_id).is_none() {
+        thread_id = cond.wait(thread_id).expect("channel closed");
+    }
+    (msg_thread, thread_id.expect("thread id"))
+}
+
+fn start_routine(
+    ready: Arc<(Condvar, Mutex<Option<u32>>)>,
+    event_tx: Sender<(Position, CaptureEvent)>,
+    request_buffer: Arc<Mutex<Vec<ClientUpdate>>>,
+) {
+    EVENT_TX.replace(Some(event_tx));
+    /* communicate thread id */
+    {
+        let (cnd, mtx) = &*ready;
+        let mut ready = mtx.lock().unwrap();
+        *ready = Some(unsafe { GetCurrentThreadId() });
+        cnd.notify_one();
+    }
+
+    let mouse_proc: HOOKPROC = Some(mouse_proc);
+    let kybrd_proc: HOOKPROC = Some(kybrd_proc);
+    let window_proc: WNDPROC = Some(window_proc);
+
+    /* register hooks */
+    unsafe {
+        let _ = SetWindowsHookExW(WH_MOUSE_LL, mouse_proc, None, 0).unwrap();
+        let _ = SetWindowsHookExW(WH_KEYBOARD_LL, kybrd_proc, None, 0).unwrap();
+    }
+
+    let instance = unsafe { GetModuleHandleW(None).unwrap() };
+    let instance = instance.into();
+    let window_class: WNDCLASSW = WNDCLASSW {
+        lpfnWndProc: window_proc,
+        hInstance: instance,
+        lpszClassName: w!("lan-mouse-message-window-class"),
+        ..Default::default()
+    };
+
+    static WINDOW_CLASS_REGISTERED: AtomicBool = AtomicBool::new(false);
+    if WINDOW_CLASS_REGISTERED
+        .compare_exchange(false, true, Ordering::SeqCst, Ordering::SeqCst)
+        .is_ok()
+    {
+        /* register window class if not yet done so */
+        unsafe {
+            let ret = RegisterClassW(&window_class);
+            if ret == 0 {
+                panic!("RegisterClassW");
+            }
+        }
+    }
+
+    /* window is used ro receive WM_DISPLAYCHANGE messages */
+    unsafe {
+        CreateWindowExW(
+            Default::default(),
+            w!("lan-mouse-message-window-class"),
+            w!("lan-mouse-msg-window"),
+            WINDOW_STYLE::default(),
+            0,
+            0,
+            0,
+            0,
+            None,
+            None,
+            Some(instance),
+            None,
+        )
+        .expect("CreateWindowExW");
+    }
+
+    /* run message loop */
+    loop {
+        // mouse / keybrd proc do not actually return a message
+        let Some(msg) = get_msg() else {
+            break;
+        };
+        if msg.hwnd.0.is_null() {
+            /* messages sent via PostThreadMessage */
+            match msg.wParam.0 {
+                x if x == RequestType::Exit as usize => break,
+                x if x == RequestType::Release as usize => {
+                    ACTIVE_CLIENT.take();
+                }
+                x if x == RequestType::ClientUpdate as usize => {
+                    let requests = {
+                        let mut res = vec![];
+                        let mut requests = request_buffer.lock().unwrap();
+                        for request in requests.drain(..) {
+                            res.push(request);
+                        }
+                        res
+                    };
+
+                    for request in requests {
+                        update_clients(request)
+                    }
+                }
+                _ => {}
+            }
+        } else {
+            /* other messages for window_procs */
+            unsafe {
+                let _ = TranslateMessage(&msg);
+                DispatchMessageW(&msg);
+            }
+        }
+    }
+}
+
+fn check_client_activation(wparam: WPARAM, lparam: LPARAM) -> bool {
+    if wparam.0 != WM_MOUSEMOVE as usize {
+        return ACTIVE_CLIENT.get().is_some();
+    }
+    let mouse_low_level: MSLLHOOKSTRUCT = unsafe { *(lparam.0 as *const MSLLHOOKSTRUCT) };
+    let curr_pos = (mouse_low_level.pt.x, mouse_low_level.pt.y);
+    let prev_pos = PREV_POS.get().unwrap_or(curr_pos);
+    PREV_POS.replace(Some(curr_pos));
+
+    /* next event is the first actual event */
+    let ret = ACTIVE_CLIENT.get().is_some();
+
+    /* client already active, no need to check */
+    if ACTIVE_CLIENT.get().is_some() {
+        return ret;
+    }
+
+    /* check if a client was activated */
+    let entered = DISPLAYS.with_borrow_mut(|(displays, generation)| {
+        update_display_regions(displays, generation);
+        display_util::entered_barrier(prev_pos, curr_pos, displays)
+    });
+
+    let Some(pos) = entered else {
+        return ret;
+    };
+
+    /* check if a client is registered for the barrier */
+    if !CLIENTS.with_borrow(|clients| clients.contains(&pos)) {
+        return ret;
+    }
+
+    /* update active client and entry point */
+    ACTIVE_CLIENT.replace(Some(pos));
+    let entry_point = DISPLAYS.with_borrow(|(displays, _)| {
+        display_util::clamp_to_display_bounds(displays, prev_pos, curr_pos)
+    });
+    ENTRY_POINT.replace(entry_point);
+
+    /* notify main thread */
+    log::debug!("ENTERED @ {prev_pos:?} -> {curr_pos:?}");
+    let active = ACTIVE_CLIENT.get().expect("active client");
+    blocking_send_event(active, CaptureEvent::Begin);
+
+    ret
+}
+
+unsafe extern "system" fn mouse_proc(ncode: i32, wparam: WPARAM, lparam: LPARAM) -> LRESULT {
+    let active = check_client_activation(wparam, lparam);
+
+    /* no client was active */
+    if !active {
+        return CallNextHookEx(None, ncode, wparam, lparam);
+    }
+
+    /* get active client if any */
+    let Some(pos) = ACTIVE_CLIENT.get() else {
+        return LRESULT(1);
+    };
+
+    /* convert to lan-mouse event */
+    let Some(pointer_event) = to_mouse_event(wparam, lparam) else {
+        return LRESULT(1);
+    };
+
+    /* notify mainthread (drop events if sending too fast) */
+    if let Err(e) = try_send_event(pos, CaptureEvent::Input(Event::Pointer(pointer_event))) {
+        log::warn!("e: {e}");
+    }
+
+    /* don't pass event to applications */
+    LRESULT(1)
+}
+
+unsafe extern "system" fn kybrd_proc(ncode: i32, wparam: WPARAM, lparam: LPARAM) -> LRESULT {
+    /* get active client if any */
+    let Some(client) = ACTIVE_CLIENT.get() else {
+        return CallNextHookEx(None, ncode, wparam, lparam);
+    };
+
+    /* convert to key event */
+    let Some(key_event) = to_key_event(wparam, lparam) else {
+        return LRESULT(1);
+    };
+
+    if let Err(e) = try_send_event(client, CaptureEvent::Input(Event::Keyboard(key_event))) {
+        log::warn!("e: {e}");
+    }
+
+    /* don't pass event to applications */
+    LRESULT(1)
+}
+
+unsafe extern "system" fn window_proc(
+    _hwnd: HWND,
+    uint: u32,
+    _wparam: WPARAM,
+    _lparam: LPARAM,
+) -> LRESULT {
+    if uint == WM_DISPLAYCHANGE {
+        log::debug!("display resolution changed");
+        DISPLAY_RESOLUTION_GENERATION.fetch_add(1, Ordering::Release);
+    }
+    LRESULT(1)
+}
+
+static DISPLAY_RESOLUTION_GENERATION: AtomicI32 = AtomicI32::new(1);
+
+fn update_display_regions(displays: &mut Vec<RECT>, generation: &mut i32) {
+    let global_generation = DISPLAY_RESOLUTION_GENERATION.load(Ordering::Acquire);
+    if *generation != global_generation {
+        enumerate_displays(displays);
+        log::debug!("displays: {displays:?}");
+        *generation = global_generation;
+    }
+}
+
+fn enumerate_displays(display_rects: &mut Vec<RECT>) {
+    display_rects.clear();
+    unsafe {
+        let mut devices = vec![];
+        for i in 0.. {
+            let mut device: DISPLAY_DEVICEW = std::mem::zeroed();
+            device.cb = std::mem::size_of::<DISPLAY_DEVICEW>() as u32;
+            let ret = EnumDisplayDevicesW(None, i, &mut device, EDD_GET_DEVICE_INTERFACE_NAME);
+            if ret == FALSE {
+                break;
+            }
+            if device
+                .StateFlags
+                .contains(DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)
+            {
+                devices.push(device.DeviceName);
+            }
+        }
+        for device in devices {
+            let mut dev_mode: DEVMODEW = std::mem::zeroed();
+            dev_mode.dmSize = std::mem::size_of::<DEVMODEW>() as u16;
+            let ret = EnumDisplaySettingsW(
+                PCWSTR::from_raw(&device as *const _),
+                ENUM_CURRENT_SETTINGS,
+                &mut dev_mode,
+            );
+            if ret == FALSE {
+                log::warn!("no display mode");
+            }
+
+            let pos = dev_mode.Anonymous1.Anonymous2.dmPosition;
+            let (x, y) = (pos.x, pos.y);
+            let (width, height) = (dev_mode.dmPelsWidth, dev_mode.dmPelsHeight);
+
+            display_rects.push(RECT {
+                left: x,
+                right: x + width as i32,
+                top: y,
+                bottom: y + height as i32,
+            });
+        }
+    }
+}
+
+fn update_clients(request: ClientUpdate) {
+    match request {
+        ClientUpdate::Create(pos) => {
+            CLIENTS.with_borrow_mut(|clients| clients.insert(pos));
+        }
+        ClientUpdate::Destroy(pos) => {
+            if let Some(active_pos) = ACTIVE_CLIENT.get() {
+                if pos == active_pos {
+                    let _ = ACTIVE_CLIENT.take();
+                }
+            }
+            CLIENTS.with_borrow_mut(|clients| clients.remove(&pos));
+        }
+    }
+}
+
+fn to_key_event(wparam: WPARAM, lparam: LPARAM) -> Option<KeyboardEvent> {
+    let kybrdllhookstruct: KBDLLHOOKSTRUCT = unsafe { *(lparam.0 as *const KBDLLHOOKSTRUCT) };
+    let mut scan_code = kybrdllhookstruct.scanCode;
+    log::trace!("scan_code: {scan_code}");
+    if kybrdllhookstruct.flags.contains(LLKHF_EXTENDED) {
+        scan_code |= 0xE000;
+    }
+    let Ok(win_scan_code) = scancode::Windows::try_from(scan_code) else {
+        log::warn!("failed to translate to windows scancode: {scan_code}");
+        return None;
+    };
+    log::trace!("windows_scan: {win_scan_code:?}");
+    let Ok(linux_scan_code): Result<Linux, ()> = win_scan_code.try_into() else {
+        log::warn!("failed to translate into linux scancode: {win_scan_code:?}");
+        return None;
+    };
+    log::trace!("windows_scan: {linux_scan_code:?}");
+    let scan_code = linux_scan_code as u32;
+    match wparam {
+        WPARAM(p) if p == WM_KEYDOWN as usize => Some(KeyboardEvent::Key {
+            time: 0,
+            key: scan_code,
+            state: 1,
+        }),
+        WPARAM(p) if p == WM_KEYUP as usize => Some(KeyboardEvent::Key {
+            time: 0,
+            key: scan_code,
+            state: 0,
+        }),
+        WPARAM(p) if p == WM_SYSKEYDOWN as usize => Some(KeyboardEvent::Key {
+            time: 0,
+            key: scan_code,
+            state: 1,
+        }),
+        WPARAM(p) if p == WM_SYSKEYUP as usize => Some(KeyboardEvent::Key {
+            time: 0,
+            key: scan_code,
+            state: 0,
+        }),
+        _ => None,
+    }
+}
+
+fn to_mouse_event(wparam: WPARAM, lparam: LPARAM) -> Option<PointerEvent> {
+    let mouse_low_level: MSLLHOOKSTRUCT = unsafe { *(lparam.0 as *const MSLLHOOKSTRUCT) };
+    match wparam {
+        WPARAM(p) if p == WM_LBUTTONDOWN as usize => Some(PointerEvent::Button {
+            time: 0,
+            button: BTN_LEFT,
+            state: 1,
+        }),
+        WPARAM(p) if p == WM_MBUTTONDOWN as usize => Some(PointerEvent::Button {
+            time: 0,
+            button: BTN_MIDDLE,
+            state: 1,
+        }),
+        WPARAM(p) if p == WM_RBUTTONDOWN as usize => Some(PointerEvent::Button {
+            time: 0,
+            button: BTN_RIGHT,
+            state: 1,
+        }),
+        WPARAM(p) if p == WM_LBUTTONUP as usize => Some(PointerEvent::Button {
+            time: 0,
+            button: BTN_LEFT,
+            state: 0,
+        }),
+        WPARAM(p) if p == WM_MBUTTONUP as usize => Some(PointerEvent::Button {
+            time: 0,
+            button: BTN_MIDDLE,
+            state: 0,
+        }),
+        WPARAM(p) if p == WM_RBUTTONUP as usize => Some(PointerEvent::Button {
+            time: 0,
+            button: BTN_RIGHT,
+            state: 0,
+        }),
+        WPARAM(p) if p == WM_MOUSEMOVE as usize => {
+            let (x, y) = (mouse_low_level.pt.x, mouse_low_level.pt.y);
+            let (ex, ey) = ENTRY_POINT.get();
+            let (dx, dy) = (x - ex, y - ey);
+            let (dx, dy) = (dx as f64, dy as f64);
+            Some(PointerEvent::Motion { time: 0, dx, dy })
+        }
+        WPARAM(p) if p == WM_MOUSEWHEEL as usize => Some(PointerEvent::AxisDiscrete120 {
+            axis: 0,
+            value: -(mouse_low_level.mouseData as i32 >> 16),
+        }),
+        WPARAM(p) if p == WM_XBUTTONDOWN as usize || p == WM_XBUTTONUP as usize => {
+            let hb = mouse_low_level.mouseData >> 16;
+            let button = match hb {
+                1 => BTN_BACK,
+                2 => BTN_FORWARD,
+                _ => {
+                    log::warn!("unknown mouse button");
+                    return None;
+                }
+            };
+            Some(PointerEvent::Button {
+                time: 0,
+                button,
+                state: if p == WM_XBUTTONDOWN as usize { 1 } else { 0 },
+            })
+        }
+        WPARAM(p) if p == WM_MOUSEHWHEEL as usize => Some(PointerEvent::AxisDiscrete120 {
+            axis: 1, // Horizontal
+            value: mouse_low_level.mouseData as i32 >> 16,
+        }),
+        w => {
+            log::warn!("unknown mouse event: {w:?}");
+            None
+        }
+    }
+}

input-capture/src/x11.rs

@@ -3,7 +3,7 @@ use std::task::Poll;
 use async_trait::async_trait;
 use futures_core::Stream;
 
-use super::{error::X11InputCaptureCreationError, Capture, CaptureError, CaptureEvent, Position};
+use super::{Capture, CaptureError, CaptureEvent, Position, error::X11InputCaptureCreationError};
 
 pub struct X11InputCapture {}
 

input-emulation/Cargo.toml

@@ -21,10 +21,12 @@ tokio = { version = "1.32.0", features = [
     "rt",
     "sync",
     "signal",
+    "time"
 ] }
 once_cell = "1.19.0"
 
 [target.'cfg(all(unix, not(target_os="macos")))'.dependencies]
+bitflags = "2.6.0"
 wayland-client = { version = "0.31.1", optional = true }
 wayland-protocols = { version = "0.32.1", features = [
     "client",
@@ -38,18 +40,18 @@ wayland-protocols-misc = { version = "0.3.1", features = [
     "client",
 ], optional = true }
 x11 = { version = "2.21.0", features = ["xlib", "xtest"], optional = true }
-ashpd = { version = "0.10", default-features = false, features = [
+ashpd = { version = "0.11.0", default-features = false, features = [
     "tokio",
 ], optional = true }
-reis = { version = "0.4", features = ["tokio"], optional = true }
+reis = { version = "0.5.0", features = ["tokio"], optional = true }
 
 [target.'cfg(target_os="macos")'.dependencies]
 bitflags = "2.6.0"
-core-graphics = { version = "0.24.0", features = ["highsierra"] }
-keycode = "0.4.0"
+core-graphics = { version = "0.25.0", features = ["highsierra"] }
+keycode = "1.0.0"
 
 [target.'cfg(windows)'.dependencies]
-windows = { version = "0.58.0", features = [
+windows = { version = "0.61.2", features = [
     "Win32_System_LibraryLoader",
     "Win32_System_Threading",
     "Win32_Foundation",

input-emulation/src/error.rs

@@ -11,15 +11,15 @@ pub enum InputEmulationError {
     any(feature = "remote_desktop_portal", feature = "libei"),
     not(target_os = "macos")
 ))]
-use ashpd::{desktop::ResponseError, Error::Response};
+use ashpd::{Error::Response, desktop::ResponseError};
 use std::io;
 use thiserror::Error;
 
 #[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
 use wayland_client::{
+    ConnectError, DispatchError,
     backend::WaylandError,
     globals::{BindError, GlobalError},
-    ConnectError, DispatchError,
 };
 
 #[derive(Debug, Error)]

input-emulation/src/libei.rs

@@ -1,25 +1,26 @@
-use futures::{future, StreamExt};
+use futures::{StreamExt, future};
 use std::{
-    io,
+    env, fs, io,
     os::{fd::OwnedFd, unix::net::UnixStream},
+    path::PathBuf,
     sync::{
-        atomic::{AtomicBool, Ordering},
         Arc, Mutex, RwLock,
+        atomic::{AtomicBool, Ordering},
     },
     time::{SystemTime, UNIX_EPOCH},
 };
 use tokio::task::JoinHandle;
 
 use ashpd::desktop::{
-    remote_desktop::{DeviceType, RemoteDesktop},
     PersistMode, Session,
+    remote_desktop::{DeviceType, RemoteDesktop},
 };
 use async_trait::async_trait;
 
 use reis::{
     ei::{
-        self, button::ButtonState, handshake::ContextType, keyboard::KeyState, Button, Keyboard,
-        Pointer, Scroll,
+        self, Button, Keyboard, Pointer, Scroll, button::ButtonState, handshake::ContextType,
+        keyboard::KeyState,
     },
     event::{self, Connection, DeviceCapability, DeviceEvent, EiEvent, SeatEvent},
     tokio::EiConvertEventStream,
@@ -29,7 +30,7 @@ use input_event::{Event, KeyboardEvent, PointerEvent};
 
 use crate::error::EmulationError;
 
-use super::{error::LibeiEmulationCreationError, Emulation, EmulationHandle};
+use super::{Emulation, EmulationHandle, error::LibeiEmulationCreationError};
 
 #[derive(Clone, Default)]
 struct Devices {
@@ -50,10 +51,45 @@ pub(crate) struct LibeiEmulation<'a> {
     session: Session<'a, RemoteDesktop<'a>>,
 }
 
-async fn get_ei_fd<'a>(
-) -> Result<(RemoteDesktop<'a>, Session<'a, RemoteDesktop<'a>>, OwnedFd), ashpd::Error> {
+/// Get the path to the RemoteDesktop token file
+fn get_token_file_path() -> PathBuf {
+    let cache_dir = env::var("XDG_CACHE_HOME")
+        .ok()
+        .map(PathBuf::from)
+        .unwrap_or_else(|| {
+            let home = env::var("HOME").expect("HOME not set");
+            PathBuf::from(home).join(".cache")
+        });
+
+    cache_dir.join("lan-mouse").join("remote-desktop.token")
+}
+
+/// Read the RemoteDesktop token from file
+fn read_token() -> Option<String> {
+    let token_path = get_token_file_path();
+    match fs::read_to_string(&token_path) {
+        Ok(token) => Some(token.trim().to_string()),
+        Err(_) => None,
+    }
+}
+
+/// Write the RemoteDesktop token to file
+fn write_token(token: &str) -> io::Result<()> {
+    let token_path = get_token_file_path();
+    if let Some(parent) = token_path.parent() {
+        fs::create_dir_all(parent)?;
+    }
+
+    fs::write(&token_path, token)?;
+    Ok(())
+}
+
+async fn get_ei_fd<'a>()
+-> Result<(RemoteDesktop<'a>, Session<'a, RemoteDesktop<'a>>, OwnedFd), ashpd::Error> {
     let remote_desktop = RemoteDesktop::new().await?;
 
+    let restore_token = read_token();
+
     log::debug!("creating session ...");
     let session = remote_desktop.create_session().await?;
 
@@ -62,19 +98,26 @@ async fn get_ei_fd<'a>(
         .select_devices(
             &session,
             DeviceType::Keyboard | DeviceType::Pointer,
-            None,
+            restore_token.as_deref(),
             PersistMode::ExplicitlyRevoked,
         )
         .await?;
 
     log::info!("requesting permission for input emulation");
-    let _devices = remote_desktop.start(&session, None).await?.response()?;
+    let start_response = remote_desktop.start(&session, None).await?.response()?;
+
+    // The restore token is only valid once, we need to re-save it each time
+    if let Some(token_str) = start_response.restore_token() {
+        if let Err(e) = write_token(token_str) {
+            log::warn!("failed to save RemoteDesktop token: {}", e);
+        }
+    }
 
     let fd = remote_desktop.connect_to_eis(&session).await?;
     Ok((remote_desktop, session, fd))
 }
 
-impl<'a> LibeiEmulation<'a> {
+impl LibeiEmulation<'_> {
     pub(crate) async fn new() -> Result<Self, LibeiEmulationCreationError> {
         let (_remote_desktop, session, eifd) = get_ei_fd().await?;
         let stream = UnixStream::from(eifd);
@@ -109,14 +152,14 @@ impl<'a> LibeiEmulation<'a> {
     }
 }
 
-impl<'a> Drop for LibeiEmulation<'a> {
+impl Drop for LibeiEmulation<'_> {
     fn drop(&mut self) {
         self.ei_task.abort();
     }
 }
 
 #[async_trait]
-impl<'a> Emulation for LibeiEmulation<'a> {
+impl Emulation for LibeiEmulation<'_> {
     async fn consume(
         &mut self,
         event: Event,

input-emulation/src/macos.rs

@@ -1,4 +1,4 @@
-use super::{error::EmulationError, Emulation, EmulationHandle};
+use super::{Emulation, EmulationHandle, error::EmulationError};
 use async_trait::async_trait;
 use bitflags::bitflags;
 use core_graphics::base::CGFloat;
@@ -10,25 +10,37 @@ use core_graphics::event::{
     ScrollEventUnit,
 };
 use core_graphics::event_source::{CGEventSource, CGEventSourceStateID};
-use input_event::{scancode, Event, KeyboardEvent, PointerEvent};
+use input_event::{BTN_LEFT, BTN_MIDDLE, BTN_RIGHT, Event, KeyboardEvent, PointerEvent, scancode};
 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 std::time::{Duration, Instant};
 use tokio::{sync::Notify, task::JoinHandle};
 
 use super::error::MacOSEmulationCreationError;
 
 const DEFAULT_REPEAT_DELAY: Duration = Duration::from_millis(500);
 const DEFAULT_REPEAT_INTERVAL: Duration = Duration::from_millis(32);
+const DOUBLE_CLICK_INTERVAL: Duration = Duration::from_millis(500);
 
 pub(crate) struct MacOSEmulation {
+    /// global event source for all events
     event_source: CGEventSource,
+    /// task handle for key repeats
     repeat_task: Option<JoinHandle<()>>,
+    /// current state of the mouse buttons
     button_state: ButtonState,
+    /// button previously pressed
+    previous_button: Option<CGMouseButton>,
+    /// timestamp of previous click (button down)
+    previous_button_click: Option<Instant>,
+    /// click state, i.e. number of clicks in quick succession
+    button_click_state: i64,
+    /// current modifier state
     modifier_state: Rc<Cell<XMods>>,
+    /// notify to cancel key repeats
     notify_repeat_task: Arc<Notify>,
 }
 
@@ -74,6 +86,9 @@ impl MacOSEmulation {
         Ok(Self {
             event_source,
             button_state,
+            previous_button: None,
+            previous_button_click: None,
+            button_click_state: 0,
             repeat_task: None,
             notify_repeat_task: Arc::new(Notify::new()),
             modifier_state: Rc::new(Cell::new(XMods::empty())),
@@ -89,6 +104,9 @@ impl MacOSEmulation {
         // there can only be one repeating key and it's
         // always the last to be pressed
         self.cancel_repeat_task().await;
+        // initial key event
+        key_event(self.event_source.clone(), key, 1, self.modifier_state.get());
+        // repeat task
         let event_source = self.event_source.clone();
         let notify = self.notify_repeat_task.clone();
         let modifiers = self.modifier_state.clone();
@@ -161,16 +179,16 @@ fn get_display_at_point(x: CGFloat, y: CGFloat) -> Option<CGDirectDisplayID> {
     };
 
     if error != 0 {
-        log::warn!("error getting displays at point ({}, {}): {}", x, y, error);
+        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);
+        log::debug!("no displays found at point ({x}, {y})");
         return Option::None;
     }
 
-    return displays.first().copied();
+    displays.first().copied()
 }
 
 fn get_display_bounds(display: CGDirectDisplayID) -> (CGFloat, CGFloat, CGFloat, CGFloat) {
@@ -224,150 +242,167 @@ impl Emulation for MacOSEmulation {
         event: Event,
         _handle: EmulationHandle,
     ) -> Result<(), EmulationError> {
+        log::trace!("{event:?}");
         match event {
-            Event::Pointer(pointer_event) => match pointer_event {
-                PointerEvent::Motion { time: _, dx, dy } => {
-                    let mut mouse_location = match self.get_mouse_location() {
-                        Some(l) => l,
-                        None => {
-                            log::warn!("could not get mouse location!");
-                            return Ok(());
-                        }
-                    };
+            Event::Pointer(pointer_event) => {
+                match pointer_event {
+                    PointerEvent::Motion { time: _, dx, dy } => {
+                        let mut mouse_location = match self.get_mouse_location() {
+                            Some(l) => l,
+                            None => {
+                                log::warn!("could not get mouse location!");
+                                return Ok(());
+                            }
+                        };
 
-                    let (new_mouse_x, new_mouse_y) =
-                        clamp_to_screen_space(mouse_location.x, mouse_location.y, dx, dy);
+                        let (new_mouse_x, new_mouse_y) =
+                            clamp_to_screen_space(mouse_location.x, mouse_location.y, dx, dy);
 
-                    mouse_location.x = new_mouse_x;
-                    mouse_location.y = new_mouse_y;
+                        mouse_location.x = new_mouse_x;
+                        mouse_location.y = new_mouse_y;
 
-                    let mut event_type = CGEventType::MouseMoved;
-                    if self.button_state.left {
-                        event_type = CGEventType::LeftMouseDragged
-                    } else if self.button_state.right {
-                        event_type = CGEventType::RightMouseDragged
-                    } else if self.button_state.center {
-                        event_type = CGEventType::OtherMouseDragged
-                    };
-                    let event = match CGEvent::new_mouse_event(
-                        self.event_source.clone(),
-                        event_type,
-                        mouse_location,
-                        CGMouseButton::Left,
-                    ) {
-                        Ok(e) => e,
-                        Err(_) => {
-                            log::warn!("mouse event creation failed!");
-                            return Ok(());
-                        }
-                    };
-                    event.set_integer_value_field(EventField::MOUSE_EVENT_DELTA_X, dx as i64);
-                    event.set_integer_value_field(EventField::MOUSE_EVENT_DELTA_Y, dy as i64);
-                    event.post(CGEventTapLocation::HID);
-                }
-                PointerEvent::Button {
-                    time: _,
-                    button,
-                    state,
-                } => {
-                    let (event_type, mouse_button) = match (button, state) {
-                        (b, 1) if b == input_event::BTN_LEFT => {
-                            (CGEventType::LeftMouseDown, CGMouseButton::Left)
-                        }
-                        (b, 0) if b == input_event::BTN_LEFT => {
-                            (CGEventType::LeftMouseUp, CGMouseButton::Left)
-                        }
-                        (b, 1) if b == input_event::BTN_RIGHT => {
-                            (CGEventType::RightMouseDown, CGMouseButton::Right)
-                        }
-                        (b, 0) if b == input_event::BTN_RIGHT => {
-                            (CGEventType::RightMouseUp, CGMouseButton::Right)
-                        }
-                        (b, 1) if b == input_event::BTN_MIDDLE => {
-                            (CGEventType::OtherMouseDown, CGMouseButton::Center)
-                        }
-                        (b, 0) if b == input_event::BTN_MIDDLE => {
-                            (CGEventType::OtherMouseUp, CGMouseButton::Center)
-                        }
-                        _ => {
-                            log::warn!("invalid button event: {button},{state}");
-                            return Ok(());
-                        }
-                    };
-                    // store button state
-                    self.button_state[mouse_button] = state == 1;
+                        let mut event_type = CGEventType::MouseMoved;
+                        if self.button_state.left {
+                            event_type = CGEventType::LeftMouseDragged
+                        } else if self.button_state.right {
+                            event_type = CGEventType::RightMouseDragged
+                        } else if self.button_state.center {
+                            event_type = CGEventType::OtherMouseDragged
+                        };
+                        let event = match CGEvent::new_mouse_event(
+                            self.event_source.clone(),
+                            event_type,
+                            mouse_location,
+                            CGMouseButton::Left,
+                        ) {
+                            Ok(e) => e,
+                            Err(_) => {
+                                log::warn!("mouse event creation failed!");
+                                return Ok(());
+                            }
+                        };
+                        event.set_integer_value_field(EventField::MOUSE_EVENT_DELTA_X, dx as i64);
+                        event.set_integer_value_field(EventField::MOUSE_EVENT_DELTA_Y, dy as i64);
+                        event.post(CGEventTapLocation::HID);
+                    }
+                    PointerEvent::Button {
+                        time: _,
+                        button,
+                        state,
+                    } => {
+                        let (event_type, mouse_button) = match (button, state) {
+                            (BTN_LEFT, 1) => (CGEventType::LeftMouseDown, CGMouseButton::Left),
+                            (BTN_LEFT, 0) => (CGEventType::LeftMouseUp, CGMouseButton::Left),
+                            (BTN_RIGHT, 1) => (CGEventType::RightMouseDown, CGMouseButton::Right),
+                            (BTN_RIGHT, 0) => (CGEventType::RightMouseUp, CGMouseButton::Right),
+                            (BTN_MIDDLE, 1) => (CGEventType::OtherMouseDown, CGMouseButton::Center),
+                            (BTN_MIDDLE, 0) => (CGEventType::OtherMouseUp, CGMouseButton::Center),
+                            _ => {
+                                log::warn!("invalid button event: {button},{state}");
+                                return Ok(());
+                            }
+                        };
+                        // store button state
+                        self.button_state[mouse_button] = state == 1;
 
-                    let location = self.get_mouse_location().unwrap();
-                    let event = match CGEvent::new_mouse_event(
-                        self.event_source.clone(),
-                        event_type,
-                        location,
-                        mouse_button,
-                    ) {
-                        Ok(e) => e,
-                        Err(()) => {
-                            log::warn!("mouse event creation failed!");
-                            return Ok(());
+                        // update previous button state
+                        if state == 1 {
+                            if self.previous_button.is_some_and(|b| b.eq(&mouse_button))
+                                && self
+                                    .previous_button_click
+                                    .is_some_and(|i| i.elapsed() < DOUBLE_CLICK_INTERVAL)
+                            {
+                                self.button_click_state += 1;
+                            } else {
+                                self.button_click_state = 1;
+                            }
+                            self.previous_button = Some(mouse_button);
+                            self.previous_button_click = Some(Instant::now());
                         }
-                    };
-                    event.post(CGEventTapLocation::HID);
+
+                        log::debug!("click_state: {}", self.button_click_state);
+                        let location = self.get_mouse_location().unwrap();
+                        let event = match CGEvent::new_mouse_event(
+                            self.event_source.clone(),
+                            event_type,
+                            location,
+                            mouse_button,
+                        ) {
+                            Ok(e) => e,
+                            Err(()) => {
+                                log::warn!("mouse event creation failed!");
+                                return Ok(());
+                            }
+                        };
+                        event.set_integer_value_field(
+                            EventField::MOUSE_EVENT_CLICK_STATE,
+                            self.button_click_state,
+                        );
+                        event.post(CGEventTapLocation::HID);
+                    }
+                    PointerEvent::Axis {
+                        time: _,
+                        axis,
+                        value,
+                    } => {
+                        let value = value as i32;
+                        let (count, wheel1, wheel2, wheel3) = match axis {
+                            0 => (1, value, 0, 0), // 0 = vertical => 1 scroll wheel device (y axis)
+                            1 => (2, 0, value, 0), // 1 = horizontal => 2 scroll wheel devices (y, x) -> (0, x)
+                            _ => {
+                                log::warn!("invalid scroll event: {axis}, {value}");
+                                return Ok(());
+                            }
+                        };
+                        let event = match CGEvent::new_scroll_event(
+                            self.event_source.clone(),
+                            ScrollEventUnit::PIXEL,
+                            count,
+                            wheel1,
+                            wheel2,
+                            wheel3,
+                        ) {
+                            Ok(e) => e,
+                            Err(()) => {
+                                log::warn!("scroll event creation failed!");
+                                return Ok(());
+                            }
+                        };
+                        event.post(CGEventTapLocation::HID);
+                    }
+                    PointerEvent::AxisDiscrete120 { axis, value } => {
+                        const LINES_PER_STEP: i32 = 3;
+                        let (count, wheel1, wheel2, wheel3) = match axis {
+                            0 => (1, value / (120 / LINES_PER_STEP), 0, 0), // 0 = vertical => 1 scroll wheel device (y axis)
+                            1 => (2, 0, value / (120 / LINES_PER_STEP), 0), // 1 = horizontal => 2 scroll wheel devices (y, x) -> (0, x)
+                            _ => {
+                                log::warn!("invalid scroll event: {axis}, {value}");
+                                return Ok(());
+                            }
+                        };
+                        let event = match CGEvent::new_scroll_event(
+                            self.event_source.clone(),
+                            ScrollEventUnit::LINE,
+                            count,
+                            wheel1,
+                            wheel2,
+                            wheel3,
+                        ) {
+                            Ok(e) => e,
+                            Err(()) => {
+                                log::warn!("scroll event creation failed!");
+                                return Ok(());
+                            }
+                        };
+                        event.post(CGEventTapLocation::HID);
+                    }
                 }
-                PointerEvent::Axis {
-                    time: _,
-                    axis,
-                    value,
-                } => {
-                    let value = value as i32;
-                    let (count, wheel1, wheel2, wheel3) = match axis {
-                        0 => (1, value, 0, 0), // 0 = vertical => 1 scroll wheel device (y axis)
-                        1 => (2, 0, value, 0), // 1 = horizontal => 2 scroll wheel devices (y, x) -> (0, x)
-                        _ => {
-                            log::warn!("invalid scroll event: {axis}, {value}");
-                            return Ok(());
-                        }
-                    };
-                    let event = match CGEvent::new_scroll_event(
-                        self.event_source.clone(),
-                        ScrollEventUnit::PIXEL,
-                        count,
-                        wheel1,
-                        wheel2,
-                        wheel3,
-                    ) {
-                        Ok(e) => e,
-                        Err(()) => {
-                            log::warn!("scroll event creation failed!");
-                            return Ok(());
-                        }
-                    };
-                    event.post(CGEventTapLocation::HID);
+
+                // reset button click state in case it's not a button event
+                if !matches!(pointer_event, PointerEvent::Button { .. }) {
+                    self.button_click_state = 0;
                 }
-                PointerEvent::AxisDiscrete120 { axis, value } => {
-                    let (count, wheel1, wheel2, wheel3) = match axis {
-                        0 => (1, value, 0, 0), // 0 = vertical => 1 scroll wheel device (y axis)
-                        1 => (2, 0, value, 0), // 1 = horizontal => 2 scroll wheel devices (y, x) -> (0, x)
-                        _ => {
-                            log::warn!("invalid scroll event: {axis}, {value}");
-                            return Ok(());
-                        }
-                    };
-                    let event = match CGEvent::new_scroll_event(
-                        self.event_source.clone(),
-                        ScrollEventUnit::PIXEL,
-                        count,
-                        wheel1,
-                        wheel2,
-                        wheel3,
-                    ) {
-                        Ok(e) => e,
-                        Err(()) => {
-                            log::warn!("scroll event creation failed!");
-                            return Ok(());
-                        }
-                    };
-                    event.post(CGEventTapLocation::HID);
-                }
-            },
+            }
             Event::Keyboard(keyboard_event) => match keyboard_event {
                 KeyboardEvent::Key {
                     time: _,
@@ -381,18 +416,12 @@ impl Emulation for MacOSEmulation {
                             return Ok(());
                         }
                     };
+                    update_modifiers(&self.modifier_state, key, state);
                     match state {
                         // pressed
                         1 => self.spawn_repeat_task(code).await,
                         _ => self.cancel_repeat_task().await,
                     }
-                    update_modifiers(&self.modifier_state, key, state);
-                    key_event(
-                        self.event_source.clone(),
-                        code,
-                        state,
-                        self.modifier_state.get(),
-                    );
                 }
                 KeyboardEvent::Modifiers {
                     depressed,
@@ -416,6 +445,21 @@ impl Emulation for MacOSEmulation {
     async fn terminate(&mut self) {}
 }
 
+trait ButtonEq {
+    fn eq(&self, other: &Self) -> bool;
+}
+
+impl ButtonEq for CGMouseButton {
+    fn eq(&self, other: &Self) -> bool {
+        matches!(
+            (self, other),
+            (CGMouseButton::Left, CGMouseButton::Left)
+                | (CGMouseButton::Right, CGMouseButton::Right)
+                | (CGMouseButton::Center, CGMouseButton::Center)
+        )
+    }
+}
+
 fn update_modifiers(modifiers: &Cell<XMods>, key: u32, state: u8) -> bool {
     if let Ok(key) = scancode::Linux::try_from(key) {
         let mask = match key {

input-emulation/src/windows.rs

@@ -1,22 +1,22 @@
 use super::error::{EmulationError, WindowsEmulationCreationError};
 use input_event::{
-    scancode, Event, KeyboardEvent, PointerEvent, BTN_BACK, BTN_FORWARD, BTN_LEFT, BTN_MIDDLE,
-    BTN_RIGHT,
+    BTN_BACK, BTN_FORWARD, BTN_LEFT, BTN_MIDDLE, BTN_RIGHT, Event, KeyboardEvent, PointerEvent,
+    scancode,
 };
 
 use async_trait::async_trait;
 use std::ops::BitOrAssign;
 use std::time::Duration;
 use tokio::task::AbortHandle;
-use windows::Win32::UI::Input::KeyboardAndMouse::{
-    SendInput, INPUT_0, KEYEVENTF_EXTENDEDKEY, MOUSEEVENTF_XDOWN, MOUSEEVENTF_XUP,
-};
 use windows::Win32::UI::Input::KeyboardAndMouse::{
     INPUT, INPUT_KEYBOARD, INPUT_MOUSE, KEYBDINPUT, KEYEVENTF_KEYUP, KEYEVENTF_SCANCODE,
     MOUSEEVENTF_HWHEEL, MOUSEEVENTF_LEFTDOWN, MOUSEEVENTF_LEFTUP, MOUSEEVENTF_MIDDLEDOWN,
     MOUSEEVENTF_MIDDLEUP, MOUSEEVENTF_MOVE, MOUSEEVENTF_RIGHTDOWN, MOUSEEVENTF_RIGHTUP,
     MOUSEEVENTF_WHEEL, MOUSEINPUT,
 };
+use windows::Win32::UI::Input::KeyboardAndMouse::{
+    INPUT_0, KEYEVENTF_EXTENDEDKEY, MOUSEEVENTF_XDOWN, MOUSEEVENTF_XUP, SendInput,
+};
 use windows::Win32::UI::WindowsAndMessaging::{XBUTTON1, XBUTTON2};
 
 use super::{Emulation, EmulationHandle};

input-emulation/src/wlroots.rs

@@ -1,15 +1,18 @@
 use crate::error::EmulationError;
 
-use super::{error::WlrootsEmulationCreationError, Emulation};
+use super::{Emulation, error::WlrootsEmulationCreationError};
 use async_trait::async_trait;
+use bitflags::bitflags;
 use std::collections::HashMap;
 use std::io;
 use std::os::fd::{AsFd, OwnedFd};
-use wayland_client::backend::WaylandError;
+use std::sync::{Arc, Mutex};
+use std::time::{SystemTime, UNIX_EPOCH};
 use wayland_client::WEnum;
+use wayland_client::backend::WaylandError;
 
 use wayland_client::protocol::wl_keyboard::{self, WlKeyboard};
-use wayland_client::protocol::wl_pointer::{Axis, ButtonState};
+use wayland_client::protocol::wl_pointer::{Axis, AxisSource, ButtonState};
 use wayland_client::protocol::wl_seat::WlSeat;
 use wayland_protocols_wlr::virtual_pointer::v1::client::{
     zwlr_virtual_pointer_manager_v1::ZwlrVirtualPointerManagerV1 as VpManager,
@@ -22,16 +25,15 @@ use wayland_protocols_misc::zwp_virtual_keyboard_v1::client::{
 };
 
 use wayland_client::{
-    delegate_noop,
-    globals::{registry_queue_init, GlobalListContents},
+    Connection, Dispatch, EventQueue, QueueHandle, delegate_noop,
+    globals::{GlobalListContents, registry_queue_init},
     protocol::{wl_registry, wl_seat},
-    Connection, Dispatch, EventQueue, QueueHandle,
 };
 
-use input_event::{Event, KeyboardEvent, PointerEvent};
+use input_event::{Event, KeyboardEvent, PointerEvent, scancode};
 
-use super::error::WaylandBindError;
 use super::EmulationHandle;
+use super::error::WaylandBindError;
 
 struct State {
     keymap: Option<(u32, OwnedFd, u32)>,
@@ -102,7 +104,11 @@ impl State {
             panic!("no keymap");
         }
 
-        let vinput = VirtualInput { pointer, keyboard };
+        let vinput = VirtualInput {
+            pointer,
+            keyboard,
+            modifiers: Arc::new(Mutex::new(XMods::empty())),
+        };
 
         self.input_for_client.insert(client, vinput);
     }
@@ -156,13 +162,13 @@ impl Emulation for WlrootsEmulation {
     async fn create(&mut self, handle: EmulationHandle) {
         self.state.add_client(handle);
         if let Err(e) = self.queue.flush() {
-            log::error!("{}", e);
+            log::error!("{e}");
         }
     }
     async fn destroy(&mut self, handle: EmulationHandle) {
         self.state.destroy_client(handle);
         if let Err(e) = self.queue.flush() {
-            log::error!("{}", e);
+            log::error!("{e}");
         }
     }
     async fn terminate(&mut self) {
@@ -173,10 +179,16 @@ impl Emulation for WlrootsEmulation {
 struct VirtualInput {
     pointer: Vp,
     keyboard: Vk,
+    modifiers: Arc<Mutex<XMods>>,
 }
 
 impl VirtualInput {
     fn consume_event(&self, event: Event) -> Result<(), ()> {
+        let now: u32 = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .unwrap_or_default()
+            .as_millis() as u32;
+
         match event {
             Event::Pointer(e) => {
                 match e {
@@ -197,7 +209,8 @@ impl VirtualInput {
                     PointerEvent::AxisDiscrete120 { axis, value } => {
                         let axis: Axis = (axis as u32).try_into()?;
                         self.pointer
-                            .axis_discrete(0, axis, value as f64 / 6., value / 120);
+                            .axis_discrete(now, axis, value as f64 / 8., value / 120);
+                        self.pointer.axis_source(AxisSource::Wheel);
                         self.pointer.frame();
                     }
                 }
@@ -206,6 +219,17 @@ impl VirtualInput {
             Event::Keyboard(e) => match e {
                 KeyboardEvent::Key { time, key, state } => {
                     self.keyboard.key(time, key, state as u32);
+                    if let Ok(mut mods) = self.modifiers.lock() {
+                        if mods.update_by_key_event(key, state) {
+                            log::trace!("Key triggers modifier change: {mods:?}");
+                            self.keyboard.modifiers(
+                                mods.mask_pressed().bits(),
+                                0,
+                                mods.mask_locks().bits(),
+                                0,
+                            );
+                        }
+                    }
                 }
                 KeyboardEvent::Modifiers {
                     depressed: mods_depressed,
@@ -213,6 +237,10 @@ impl VirtualInput {
                     locked: mods_locked,
                     group,
                 } => {
+                    // Synchronize internal modifier state, assuming server is authoritative
+                    if let Ok(mut mods) = self.modifiers.lock() {
+                        mods.update_by_mods_event(e);
+                    }
                     self.keyboard
                         .modifiers(mods_depressed, mods_latched, mods_locked, group);
                 }
@@ -273,3 +301,74 @@ impl Dispatch<WlSeat, ()> for State {
         }
     }
 }
+
+// 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);
+    }
+}
+
+impl XMods {
+    fn update_by_mods_event(&mut self, evt: KeyboardEvent) {
+        if let KeyboardEvent::Modifiers {
+            depressed, locked, ..
+        } = evt
+        {
+            *self = XMods::from_bits_truncate(depressed) | XMods::from_bits_truncate(locked);
+        }
+    }
+
+    fn update_by_key_event(&mut self, key: u32, state: u8) -> bool {
+        if let Ok(key) = scancode::Linux::try_from(key) {
+            log::trace!("Attempting to process modifier from: {key:#?}");
+            let pressed_mask = match key {
+                scancode::Linux::KeyLeftShift | scancode::Linux::KeyRightShift => XMods::ShiftMask,
+                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(),
+            };
+
+            let locked_mask = match key {
+                scancode::Linux::KeyCapsLock => XMods::LockMask,
+                scancode::Linux::KeyNumlock => XMods::Mod2Mask,
+                scancode::Linux::KeyScrollLock => XMods::Mod3Mask,
+                _ => XMods::empty(),
+            };
+
+            // unchanged
+            if pressed_mask.is_empty() && locked_mask.is_empty() {
+                log::trace!("{key:#?} is not a modifier key");
+                return false;
+            }
+            match state {
+                1 => self.insert(pressed_mask),
+                _ => {
+                    self.remove(pressed_mask);
+                    self.toggle(locked_mask);
+                }
+            }
+            true
+        } else {
+            false
+        }
+    }
+
+    fn mask_locks(&self) -> XMods {
+        *self & (XMods::LockMask | XMods::Mod2Mask | XMods::Mod3Mask)
+    }
+
+    fn mask_pressed(&self) -> XMods {
+        *self & (XMods::ShiftMask | XMods::ControlMask | XMods::Mod1Mask | XMods::Mod4Mask)
+    }
+}

input-emulation/src/x11.rs

@@ -6,12 +6,12 @@ use x11::{
 };
 
 use input_event::{
-    Event, KeyboardEvent, PointerEvent, BTN_BACK, BTN_FORWARD, BTN_LEFT, BTN_MIDDLE, BTN_RIGHT,
+    BTN_BACK, BTN_FORWARD, BTN_LEFT, BTN_MIDDLE, BTN_RIGHT, Event, KeyboardEvent, PointerEvent,
 };
 
 use crate::error::EmulationError;
 
-use super::{error::X11EmulationCreationError, Emulation, EmulationHandle};
+use super::{Emulation, EmulationHandle, error::X11EmulationCreationError};
 
 pub(crate) struct X11Emulation {
     display: *mut xlib::Display,
@@ -23,7 +23,7 @@ impl X11Emulation {
     pub(crate) fn new() -> Result<Self, X11EmulationCreationError> {
         let display = unsafe {
             match xlib::XOpenDisplay(ptr::null()) {
-                d if d == ptr::null::<xlib::Display>() as *mut xlib::Display => {
+                d if std::ptr::eq(d, ptr::null_mut::<xlib::Display>()) => {
                     Err(X11EmulationCreationError::OpenDisplay)
                 }
                 display => Ok(display),

input-emulation/src/xdg_desktop_portal.rs

@@ -1,7 +1,7 @@
 use ashpd::{
     desktop::{
-        remote_desktop::{Axis, DeviceType, KeyState, RemoteDesktop},
         PersistMode, Session,
+        remote_desktop::{Axis, DeviceType, KeyState, RemoteDesktop},
     },
     zbus::AsyncDrop,
 };
@@ -15,7 +15,7 @@ use input_event::{
 
 use crate::error::EmulationError;
 
-use super::{error::XdpEmulationCreationError, Emulation, EmulationHandle};
+use super::{Emulation, EmulationHandle, error::XdpEmulationCreationError};
 
 pub(crate) struct DesktopPortalEmulation<'a> {
     proxy: RemoteDesktop<'a>,
@@ -52,7 +52,7 @@ impl<'a> DesktopPortalEmulation<'a> {
 }
 
 #[async_trait]
-impl<'a> Emulation for DesktopPortalEmulation<'a> {
+impl Emulation for DesktopPortalEmulation<'_> {
     async fn consume(
         &mut self,
         event: input_event::Event,
@@ -141,9 +141,8 @@ impl<'a> Emulation for DesktopPortalEmulation<'a> {
     }
 }
 
-impl<'a> AsyncDrop for DesktopPortalEmulation<'a> {
+impl AsyncDrop for DesktopPortalEmulation<'_> {
     #[doc = r" Perform the async cleanup."]
-    #[must_use]
     #[allow(clippy::type_complexity, clippy::type_repetition_in_bounds)]
     fn async_drop<'async_trait>(
         self,

input-event/Cargo.toml

@@ -14,7 +14,7 @@ serde = { version = "1.0", features = ["derive"] }
 thiserror = "2.0.0"
 
 [target.'cfg(all(unix, not(target_os="macos")))'.dependencies]
-reis = { version = "0.4", optional = true }
+reis = { version = "0.5.0", optional = true }
 
 [features]
 default = ["libei"]

input-event/src/lib.rs

@@ -112,8 +112,8 @@ impl Display for KeyboardEvent {
 impl Display for Event {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
-            Event::Pointer(p) => write!(f, "{}", p),
-            Event::Keyboard(k) => write!(f, "{}", k),
+            Event::Pointer(p) => write!(f, "{p}"),
+            Event::Keyboard(k) => write!(f, "{k}"),
         }
     }
 }

lan-mouse-cli/Cargo.toml

@@ -9,6 +9,8 @@ repository = "https://github.com/feschber/lan-mouse"
 [dependencies]
 futures = "0.3.30"
 lan-mouse-ipc = { path = "../lan-mouse-ipc", version = "0.2.0" }
+clap = { version = "4.4.11", features = ["derive"] }
+thiserror = "2.0.0"
 tokio = { version = "1.32.0", features = [
     "io-util",
     "io-std",

lan-mouse-cli/src/command.rs

@@ -1,153 +0,0 @@
-use std::{
-    fmt::Display,
-    str::{FromStr, SplitWhitespace},
-};
-
-use lan_mouse_ipc::{ClientHandle, Position};
-
-pub(super) enum CommandType {
-    NoCommand,
-    Help,
-    Connect,
-    Disconnect,
-    Activate,
-    Deactivate,
-    List,
-    SetHost,
-    SetPort,
-}
-
-#[derive(Debug)]
-pub(super) struct InvalidCommand {
-    cmd: String,
-}
-
-impl Display for InvalidCommand {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "invalid command: \"{}\"", self.cmd)
-    }
-}
-
-impl FromStr for CommandType {
-    type Err = InvalidCommand;
-
-    fn from_str(s: &str) -> std::prelude::v1::Result<Self, Self::Err> {
-        match s {
-            "connect" => Ok(Self::Connect),
-            "disconnect" => Ok(Self::Disconnect),
-            "activate" => Ok(Self::Activate),
-            "deactivate" => Ok(Self::Deactivate),
-            "list" => Ok(Self::List),
-            "set-host" => Ok(Self::SetHost),
-            "set-port" => Ok(Self::SetPort),
-            "help" => Ok(Self::Help),
-            _ => Err(InvalidCommand { cmd: s.to_string() }),
-        }
-    }
-}
-
-#[derive(Debug)]
-pub(super) enum Command {
-    None,
-    Help,
-    Connect(Position, String, Option<u16>),
-    Disconnect(ClientHandle),
-    Activate(ClientHandle),
-    Deactivate(ClientHandle),
-    List,
-    SetHost(ClientHandle, String),
-    SetPort(ClientHandle, Option<u16>),
-}
-
-impl CommandType {
-    pub(super) fn usage(&self) -> &'static str {
-        match self {
-            CommandType::Help => "help",
-            CommandType::NoCommand => "",
-            CommandType::Connect => "connect left|right|top|bottom <host> [<port>]",
-            CommandType::Disconnect => "disconnect <id>",
-            CommandType::Activate => "activate <id>",
-            CommandType::Deactivate => "deactivate <id>",
-            CommandType::List => "list",
-            CommandType::SetHost => "set-host <id> <host>",
-            CommandType::SetPort => "set-port <id> <host>",
-        }
-    }
-}
-
-pub(super) enum CommandParseError {
-    Usage(CommandType),
-    Invalid(InvalidCommand),
-}
-
-impl Display for CommandParseError {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            Self::Usage(cmd) => write!(f, "usage: {}", cmd.usage()),
-            Self::Invalid(cmd) => write!(f, "{}", cmd),
-        }
-    }
-}
-
-impl FromStr for Command {
-    type Err = CommandParseError;
-
-    fn from_str(cmd: &str) -> Result<Self, Self::Err> {
-        let mut args = cmd.split_whitespace();
-        let cmd_type: CommandType = match args.next() {
-            Some(c) => c.parse().map_err(CommandParseError::Invalid),
-            None => Ok(CommandType::NoCommand),
-        }?;
-        match cmd_type {
-            CommandType::Help => Ok(Command::Help),
-            CommandType::NoCommand => Ok(Command::None),
-            CommandType::Connect => parse_connect_cmd(args),
-            CommandType::Disconnect => parse_disconnect_cmd(args),
-            CommandType::Activate => parse_activate_cmd(args),
-            CommandType::Deactivate => parse_deactivate_cmd(args),
-            CommandType::List => Ok(Command::List),
-            CommandType::SetHost => parse_set_host(args),
-            CommandType::SetPort => parse_set_port(args),
-        }
-    }
-}
-
-fn parse_connect_cmd(mut args: SplitWhitespace<'_>) -> Result<Command, CommandParseError> {
-    const USAGE: CommandParseError = CommandParseError::Usage(CommandType::Connect);
-    let pos = args.next().ok_or(USAGE)?.parse().map_err(|_| USAGE)?;
-    let host = args.next().ok_or(USAGE)?.to_string();
-    let port = args.next().and_then(|p| p.parse().ok());
-    Ok(Command::Connect(pos, host, port))
-}
-
-fn parse_disconnect_cmd(mut args: SplitWhitespace<'_>) -> Result<Command, CommandParseError> {
-    const USAGE: CommandParseError = CommandParseError::Usage(CommandType::Disconnect);
-    let id = args.next().ok_or(USAGE)?.parse().map_err(|_| USAGE)?;
-    Ok(Command::Disconnect(id))
-}
-
-fn parse_activate_cmd(mut args: SplitWhitespace<'_>) -> Result<Command, CommandParseError> {
-    const USAGE: CommandParseError = CommandParseError::Usage(CommandType::Activate);
-    let id = args.next().ok_or(USAGE)?.parse().map_err(|_| USAGE)?;
-    Ok(Command::Activate(id))
-}
-
-fn parse_deactivate_cmd(mut args: SplitWhitespace<'_>) -> Result<Command, CommandParseError> {
-    const USAGE: CommandParseError = CommandParseError::Usage(CommandType::Deactivate);
-    let id = args.next().ok_or(USAGE)?.parse().map_err(|_| USAGE)?;
-    Ok(Command::Deactivate(id))
-}
-
-fn parse_set_host(mut args: SplitWhitespace<'_>) -> Result<Command, CommandParseError> {
-    const USAGE: CommandParseError = CommandParseError::Usage(CommandType::SetHost);
-    let id = args.next().ok_or(USAGE)?.parse().map_err(|_| USAGE)?;
-    let host = args.next().ok_or(USAGE)?.parse().map_err(|_| USAGE)?;
-    Ok(Command::SetHost(id, host))
-}
-
-fn parse_set_port(mut args: SplitWhitespace<'_>) -> Result<Command, CommandParseError> {
-    const USAGE: CommandParseError = CommandParseError::Usage(CommandType::SetPort);
-    let id = args.next().ok_or(USAGE)?.parse().map_err(|_| USAGE)?;
-    let port = args.next().and_then(|p| p.parse().ok());
-    Ok(Command::SetPort(id, port))
-}

lan-mouse-cli/src/lib.rs

@@ -1,320 +1,170 @@
+use clap::{Args, Parser, Subcommand};
 use futures::StreamExt;
-use tokio::{
-    io::{AsyncBufReadExt, BufReader},
-    task::LocalSet,
-};
 
-use std::io::{self, Write};
-
-use self::command::{Command, CommandType};
+use std::{net::IpAddr, time::Duration};
+use thiserror::Error;
 
 use lan_mouse_ipc::{
-    AsyncFrontendEventReader, AsyncFrontendRequestWriter, ClientConfig, ClientHandle, ClientState,
-    FrontendEvent, FrontendRequest, IpcError, DEFAULT_PORT,
+    ClientHandle, ConnectionError, FrontendEvent, FrontendRequest, IpcError, Position,
+    connect_async,
 };
 
-mod command;
+#[derive(Debug, Error)]
+pub enum CliError {
+    /// is the service running?
+    #[error("could not connect: `{0}` - is the service running?")]
+    ServiceNotRunning(#[from] ConnectionError),
+    #[error("error communicating with service: {0}")]
+    Ipc(#[from] IpcError),
+}
 
-pub fn run() -> Result<(), IpcError> {
-    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?;
-        let mut cli = Cli::new(rx, tx);
-        cli.run().await
-    }))?;
+#[derive(Parser, Clone, Debug, PartialEq, Eq)]
+#[command(name = "lan-mouse-cli", about = "LanMouse CLI interface")]
+pub struct CliArgs {
+    #[command(subcommand)]
+    command: CliSubcommand,
+}
+
+#[derive(Args, Clone, Debug, PartialEq, Eq)]
+struct Client {
+    #[arg(long)]
+    hostname: Option<String>,
+    #[arg(long)]
+    port: Option<u16>,
+    #[arg(long)]
+    ips: Option<Vec<IpAddr>>,
+    #[arg(long)]
+    enter_hook: Option<String>,
+}
+
+#[derive(Clone, Subcommand, Debug, PartialEq, Eq)]
+enum CliSubcommand {
+    /// add a new client
+    AddClient(Client),
+    /// remove an existing client
+    RemoveClient { id: ClientHandle },
+    /// activate a client
+    Activate { id: ClientHandle },
+    /// deactivate a client
+    Deactivate { id: ClientHandle },
+    /// list configured clients
+    List,
+    /// change hostname
+    SetHost {
+        id: ClientHandle,
+        host: Option<String>,
+    },
+    /// change port
+    SetPort { id: ClientHandle, port: u16 },
+    /// set position
+    SetPosition { id: ClientHandle, pos: Position },
+    /// set ips
+    SetIps { id: ClientHandle, ips: Vec<IpAddr> },
+    /// re-enable capture
+    EnableCapture,
+    /// re-enable emulation
+    EnableEmulation,
+    /// authorize a public key
+    AuthorizeKey {
+        description: String,
+        sha256_fingerprint: String,
+    },
+    /// deauthorize a public key
+    RemoveAuthorizedKey { sha256_fingerprint: String },
+    /// save configuration to file
+    SaveConfig,
+}
+
+pub async fn run(args: CliArgs) -> Result<(), CliError> {
+    execute(args.command).await?;
     Ok(())
 }
 
-struct Cli {
-    clients: Vec<(ClientHandle, ClientConfig, ClientState)>,
-    changed: Option<ClientHandle>,
-    rx: AsyncFrontendEventReader,
-    tx: AsyncFrontendRequestWriter,
-}
-
-impl Cli {
-    fn new(rx: AsyncFrontendEventReader, tx: AsyncFrontendRequestWriter) -> Cli {
-        Self {
-            clients: vec![],
-            changed: None,
-            rx,
-            tx,
-        }
-    }
-
-    async fn run(&mut self) -> Result<(), IpcError> {
-        let stdin = tokio::io::stdin();
-        let stdin = BufReader::new(stdin);
-        let mut stdin = stdin.lines();
-
-        /* initial state sync */
-        self.clients = loop {
-            match self.rx.next().await {
-                Some(Ok(e)) => {
-                    if let FrontendEvent::Enumerate(clients) = e {
-                        break clients;
+async fn execute(cmd: CliSubcommand) -> Result<(), CliError> {
+    let (mut rx, mut tx) = connect_async(Some(Duration::from_millis(500))).await?;
+    match cmd {
+        CliSubcommand::AddClient(Client {
+            hostname,
+            port,
+            ips,
+            enter_hook,
+        }) => {
+            tx.request(FrontendRequest::Create).await?;
+            while let Some(e) = rx.next().await {
+                if let FrontendEvent::Created(handle, _, _) = e? {
+                    if let Some(hostname) = hostname {
+                        tx.request(FrontendRequest::UpdateHostname(handle, Some(hostname)))
+                            .await?;
                     }
-                }
-                Some(Err(e)) => return Err(e),
-                None => return Ok(()),
-            }
-        };
-
-        loop {
-            prompt()?;
-            tokio::select! {
-                line = stdin.next_line() => {
-                    let Some(line) = line? else {
-                        break Ok(());
-                    };
-                    let cmd: Command = match line.parse() {
-                        Ok(cmd) => cmd,
-                        Err(e) => {
-                            eprintln!("{e}");
-                            continue;
-                        }
-                    };
-                    self.execute(cmd).await?;
-                }
-                event = self.rx.next() => {
-                    if let Some(event) = event {
-                        self.handle_event(event?);
-                    } else {
-                        break Ok(());
+                    if let Some(port) = port {
+                        tx.request(FrontendRequest::UpdatePort(handle, port))
+                            .await?;
                     }
-                }
-            }
-            if let Some(handle) = self.changed.take() {
-                self.update_client(handle).await?;
-            }
-        }
-    }
-
-    async fn update_client(&mut self, handle: ClientHandle) -> Result<(), IpcError> {
-        self.tx.request(FrontendRequest::GetState(handle)).await?;
-        while let Some(Ok(event)) = self.rx.next().await {
-            self.handle_event(event.clone());
-            if let FrontendEvent::State(_, _, _) | FrontendEvent::NoSuchClient(_) = event {
-                break;
-            }
-        }
-        Ok(())
-    }
-
-    async fn execute(&mut self, cmd: Command) -> Result<(), IpcError> {
-        match cmd {
-            Command::None => {}
-            Command::Connect(pos, host, port) => {
-                let request = FrontendRequest::Create;
-                self.tx.request(request).await?;
-                let handle = loop {
-                    if let Some(Ok(event)) = self.rx.next().await {
-                        match event {
-                            FrontendEvent::Created(h, c, s) => {
-                                self.clients.push((h, c, s));
-                                break h;
-                            }
-                            _ => {
-                                self.handle_event(event);
-                                continue;
-                            }
-                        }
+                    if let Some(ips) = ips {
+                        tx.request(FrontendRequest::UpdateFixIps(handle, ips))
+                            .await?;
                     }
-                };
-                for request in [
-                    FrontendRequest::UpdateHostname(handle, Some(host.clone())),
-                    FrontendRequest::UpdatePort(handle, port.unwrap_or(DEFAULT_PORT)),
-                    FrontendRequest::UpdatePosition(handle, pos),
-                ] {
-                    self.tx.request(request).await?;
-                }
-                self.update_client(handle).await?;
-            }
-            Command::Disconnect(id) => {
-                self.tx.request(FrontendRequest::Delete(id)).await?;
-                loop {
-                    if let Some(Ok(event)) = self.rx.next().await {
-                        self.handle_event(event.clone());
-                        if let FrontendEvent::Deleted(_) = event {
-                            self.handle_event(event);
-                            break;
-                        }
+                    if let Some(enter_hook) = enter_hook {
+                        tx.request(FrontendRequest::UpdateEnterHook(handle, Some(enter_hook)))
+                            .await?;
                     }
-                }
-            }
-            Command::Activate(id) => {
-                self.tx.request(FrontendRequest::Activate(id, true)).await?;
-                self.update_client(id).await?;
-            }
-            Command::Deactivate(id) => {
-                self.tx
-                    .request(FrontendRequest::Activate(id, false))
-                    .await?;
-                self.update_client(id).await?;
-            }
-            Command::List => {
-                self.tx.request(FrontendRequest::Enumerate()).await?;
-                while let Some(e) = self.rx.next().await {
-                    let event = e?;
-                    self.handle_event(event.clone());
-                    if let FrontendEvent::Enumerate(_) = event {
-                        break;
-                    }
-                }
-            }
-            Command::SetHost(handle, host) => {
-                let request = FrontendRequest::UpdateHostname(handle, Some(host.clone()));
-                self.tx.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.update_client(handle).await?;
-            }
-            Command::Help => {
-                for cmd_type in [
-                    CommandType::List,
-                    CommandType::Connect,
-                    CommandType::Disconnect,
-                    CommandType::Activate,
-                    CommandType::Deactivate,
-                    CommandType::SetHost,
-                    CommandType::SetPort,
-                ] {
-                    eprintln!("{}", cmd_type.usage());
+                    break;
                 }
             }
         }
-        Ok(())
-    }
-
-    fn find_mut(
-        &mut self,
-        handle: ClientHandle,
-    ) -> Option<&mut (ClientHandle, ClientConfig, ClientState)> {
-        self.clients.iter_mut().find(|(h, _, _)| *h == handle)
-    }
-
-    fn remove(
-        &mut self,
-        handle: ClientHandle,
-    ) -> Option<(ClientHandle, ClientConfig, ClientState)> {
-        let idx = self.clients.iter().position(|(h, _, _)| *h == handle);
-        idx.map(|i| self.clients.swap_remove(i))
-    }
-
-    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);
-                eprint!(" ");
-                print_state(&s);
-                eprintln!();
-                self.clients.push((h, c, s));
-            }
-            FrontendEvent::NoSuchClient(h) => {
-                eprintln!("no such client: {h}");
-            }
-            FrontendEvent::State(h, c, s) => {
-                if let Some((_, config, state)) = self.find_mut(h) {
-                    let old_host = config.hostname.clone().unwrap_or("\"\"".into());
-                    let new_host = c.hostname.clone().unwrap_or("\"\"".into());
-                    if old_host != new_host {
-                        eprintln!(
-                            "client {h}: hostname updated ({} -> {})",
-                            old_host, new_host
+        CliSubcommand::RemoveClient { id } => tx.request(FrontendRequest::Delete(id)).await?,
+        CliSubcommand::Activate { id } => tx.request(FrontendRequest::Activate(id, true)).await?,
+        CliSubcommand::Deactivate { id } => {
+            tx.request(FrontendRequest::Activate(id, false)).await?
+        }
+        CliSubcommand::List => {
+            tx.request(FrontendRequest::Enumerate()).await?;
+            while let Some(e) = rx.next().await {
+                if let FrontendEvent::Enumerate(clients) = e? {
+                    for (handle, config, state) in clients {
+                        let host = config.hostname.unwrap_or("unknown".to_owned());
+                        let port = config.port;
+                        let pos = config.pos;
+                        let active = state.active;
+                        let ips = state.ips;
+                        println!(
+                            "id {handle}: {host}:{port} ({pos}) active: {active}, ips: {ips:?}"
                         );
                     }
-                    if config.port != c.port {
-                        eprintln!("client {h} changed port: {} -> {}", config.port, c.port);
-                    }
-                    if config.fix_ips != c.fix_ips {
-                        eprintln!("client {h} ips updated: {:?}", c.fix_ips)
-                    }
-                    *config = c;
-                    if state.active ^ s.active {
-                        eprintln!(
-                            "client {h} {}",
-                            if s.active { "activated" } else { "deactivated" }
-                        );
-                    }
-                    *state = s;
+                    break;
                 }
             }
-            FrontendEvent::Deleted(h) => {
-                if let Some((h, c, _)) = self.remove(h) {
-                    eprint!("client {h} removed (");
-                    print_config(&c);
-                    eprintln!(")");
-                }
-            }
-            FrontendEvent::PortChanged(p, e) => {
-                if let Some(e) = e {
-                    eprintln!("failed to change port: {e}");
-                } else {
-                    eprintln!("changed port to {p}");
-                }
-            }
-            FrontendEvent::Enumerate(clients) => {
-                self.clients = clients;
-                self.print_clients();
-            }
-            FrontendEvent::Error(e) => {
-                eprintln!("ERROR: {e}");
-            }
-            FrontendEvent::CaptureStatus(s) => {
-                eprintln!("capture status: {s:?}")
-            }
-            FrontendEvent::EmulationStatus(s) => {
-                eprintln!("emulation status: {s:?}")
-            }
-            FrontendEvent::AuthorizedUpdated(fingerprints) => {
-                eprintln!("authorized keys changed:");
-                for (desc, fp) in fingerprints {
-                    eprintln!("{desc}: {fp}");
-                }
-            }
-            FrontendEvent::PublicKeyFingerprint(fp) => {
-                eprintln!("the public key fingerprint of this device is {fp}");
-            }
-            FrontendEvent::IncomingConnected(..) => {}
-            FrontendEvent::IncomingDisconnected(..) => {}
         }
-    }
-
-    fn print_clients(&mut self) {
-        for (h, c, s) in self.clients.iter() {
-            eprint!("client {h}: ");
-            print_config(c);
-            eprint!(" ");
-            print_state(s);
-            eprintln!();
+        CliSubcommand::SetHost { id, host } => {
+            tx.request(FrontendRequest::UpdateHostname(id, host))
+                .await?
         }
+        CliSubcommand::SetPort { id, port } => {
+            tx.request(FrontendRequest::UpdatePort(id, port)).await?
+        }
+        CliSubcommand::SetPosition { id, pos } => {
+            tx.request(FrontendRequest::UpdatePosition(id, pos)).await?
+        }
+        CliSubcommand::SetIps { id, ips } => {
+            tx.request(FrontendRequest::UpdateFixIps(id, ips)).await?
+        }
+        CliSubcommand::EnableCapture => tx.request(FrontendRequest::EnableCapture).await?,
+        CliSubcommand::EnableEmulation => tx.request(FrontendRequest::EnableEmulation).await?,
+        CliSubcommand::AuthorizeKey {
+            description,
+            sha256_fingerprint,
+        } => {
+            tx.request(FrontendRequest::AuthorizeKey(
+                description,
+                sha256_fingerprint,
+            ))
+            .await?
+        }
+        CliSubcommand::RemoveAuthorizedKey { sha256_fingerprint } => {
+            tx.request(FrontendRequest::RemoveAuthorizedKey(sha256_fingerprint))
+                .await?
+        }
+        CliSubcommand::SaveConfig => tx.request(FrontendRequest::SaveConfiguration).await?,
     }
-}
-
-fn prompt() -> io::Result<()> {
-    eprint!("lan-mouse > ");
-    std::io::stderr().flush()?;
     Ok(())
 }
-
-fn print_config(c: &ClientConfig) {
-    eprint!(
-        "{}:{} ({}), ips: {:?}",
-        c.hostname.clone().unwrap_or("(no hostname)".into()),
-        c.port,
-        c.pos,
-        c.fix_ips
-    );
-}
-
-fn print_state(s: &ClientState) {
-    eprint!("active: {}, dns: {:?}", s.active, s.ips);
-}

lan-mouse-gtk/Cargo.toml

@@ -13,6 +13,7 @@ async-channel = { version = "2.1.1" }
 hostname = "0.4.0"
 log = "0.4.20"
 lan-mouse-ipc = { path = "../lan-mouse-ipc", version = "0.2.0" }
+thiserror = "2.0.0"
 
 [build-dependencies]
 glib-build-tools = { version = "0.20.0" }

lan-mouse-gtk/resources/authorization_window.ui

@@ -0,0 +1,102 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <requires lib="gtk" version="4.0"/>
+  <requires lib="libadwaita" version="1.0"/>
+  <template class="AuthorizationWindow" parent="AdwWindow">
+    <property name="modal">True</property>
+    <property name="width-request">180</property>
+    <property name="default-width">180</property>
+    <property name="height-request">180</property>
+    <property name="default-height">180</property>
+    <property name="title" translatable="yes">Unauthorized Device</property>
+    <property name="content">
+      <object class="GtkBox">
+        <property name="orientation">vertical</property>
+        <property name="vexpand">True</property>
+        <child type="top">
+          <object class="AdwHeaderBar">
+            <style>
+              <class name="flat"/>
+            </style>
+          </object>
+        </child>
+        <child>
+          <object class="GtkBox">
+            <property name="orientation">vertical</property>
+            <property name="spacing">30</property>
+            <property name="margin-start">30</property>
+            <property name="margin-end">30</property>
+            <property name="margin-top">30</property>
+            <property name="margin-bottom">30</property>
+            <child>
+              <object class="GtkLabel">
+                <property name="label">An unauthorized Device is trying to connect. Do you want to authorize this Device?</property>
+                <property name="width-request">100</property>
+                <property name="wrap">word-wrap</property>
+              </object>
+            </child>
+            <child>
+              <object class="AdwPreferencesGroup">
+                <property name="title">sha256 fingerprint</property>
+                <child>
+                  <object class="AdwActionRow">
+                    <property name="child">
+                      <object class="GtkLabel" id="fingerprint">
+                        <property name="ellipsize">PANGO_ELLIPSIZE_NONE</property>
+                        <property name="vexpand">True</property>
+                        <property name="hexpand">False</property>
+                        <property name="wrap">True</property>
+                        <property name="wrap-mode">word-char</property>
+                        <property name="justify">center</property>
+                        <property name="xalign">0.5</property>
+                        <property name="margin-top">10</property>
+                        <property name="margin-bottom">10</property>
+                        <property name="margin-start">10</property>
+                        <property name="margin-end">10</property>
+                        <property name="width-chars">64</property>
+                      </object>
+                    </property>
+                  </object>
+                </child>
+              </object>
+            </child>
+          </object>
+        </child>
+        <child>
+          <object class="GtkBox">
+            <property name="margin-start">30</property>
+            <property name="margin-end">30</property>
+            <property name="margin-top">30</property>
+            <property name="margin-bottom">30</property>
+            <property name="orientation">horizontal</property>
+            <property name="spacing">30</property>
+            <property name="hexpand">True</property>
+            <property name="vexpand">True</property>
+            <property name="valign">end</property>
+            <child>
+              <object class="GtkButton" id="cancel_button">
+                <signal name="clicked" handler="handle_cancel" swapped="true"/>
+                <property name="label" translatable="yes">Cancel</property>
+                <property name="can-shrink">True</property>
+                <property name="height-request">50</property>
+                <property name="hexpand">True</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkButton" id="confirm_button">
+                <signal name="clicked" handler="handle_confirm" swapped="true"/>
+                <property name="label" translatable="yes">Authorize</property>
+                <property name="can-shrink">True</property>
+                <property name="height-request">50</property>
+                <property name="hexpand">True</property>
+                <style>
+                  <class name="destructive-action"/>
+                </style>
+              </object>
+            </child>
+          </object>
+        </child>
+      </object>
+    </property>
+  </template>
+</interface>

lan-mouse-gtk/resources/client_row.ui

@@ -5,7 +5,6 @@
 		<!-- enabled -->
 		<child type="prefix">
 			<object class="GtkSwitch" id="enable_switch">
-				<signal name="state_set" handler="handle_client_set_state" swapped="true"/>
 				<property name="valign">center</property>
 				<property name="halign">end</property>
 				<property name="tooltip-text" translatable="yes">enable</property>

lan-mouse-gtk/resources/resources.gresource.xml

@@ -2,6 +2,7 @@
 <gresources>
   <gresource prefix="/de/feschber/LanMouse">
     <file compressed="true" preprocess="xml-stripblanks">window.ui</file>
+    <file compressed="true" preprocess="xml-stripblanks">authorization_window.ui</file>
     <file compressed="true" preprocess="xml-stripblanks">fingerprint_window.ui</file>
     <file compressed="true" preprocess="xml-stripblanks">client_row.ui</file>
     <file compressed="true" preprocess="xml-stripblanks">key_row.ui</file>

lan-mouse-gtk/src/authorization_window.rs

@@ -0,0 +1,19 @@
+mod imp;
+
+use glib::Object;
+use gtk::{gio, glib, subclass::prelude::ObjectSubclassIsExt};
+
+glib::wrapper! {
+    pub struct AuthorizationWindow(ObjectSubclass<imp::AuthorizationWindow>)
+    @extends adw::Window, gtk::Window, gtk::Widget,
+    @implements gio::ActionGroup, gio::ActionMap, gtk::Accessible, gtk::Buildable,
+                gtk::ConstraintTarget, gtk::Native, gtk::Root, gtk::ShortcutManager;
+}
+
+impl AuthorizationWindow {
+    pub(crate) fn new(fingerprint: &str) -> Self {
+        let window: Self = Object::builder().build();
+        window.imp().set_fingerprint(fingerprint);
+        window
+    }
+}

lan-mouse-gtk/src/authorization_window/imp.rs

@@ -0,0 +1,76 @@
+use std::sync::OnceLock;
+
+use adw::prelude::*;
+use adw::subclass::prelude::*;
+use glib::subclass::InitializingObject;
+use gtk::{
+    Button, CompositeTemplate, Label,
+    glib::{self, subclass::Signal},
+    template_callbacks,
+};
+
+#[derive(CompositeTemplate, Default)]
+#[template(resource = "/de/feschber/LanMouse/authorization_window.ui")]
+pub struct AuthorizationWindow {
+    #[template_child]
+    pub fingerprint: TemplateChild<Label>,
+    #[template_child]
+    pub cancel_button: TemplateChild<Button>,
+    #[template_child]
+    pub confirm_button: TemplateChild<Button>,
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for AuthorizationWindow {
+    const NAME: &'static str = "AuthorizationWindow";
+    const ABSTRACT: bool = false;
+
+    type Type = super::AuthorizationWindow;
+    type ParentType = adw::Window;
+
+    fn class_init(klass: &mut Self::Class) {
+        klass.bind_template();
+        klass.bind_template_callbacks();
+    }
+
+    fn instance_init(obj: &InitializingObject<Self>) {
+        obj.init_template();
+    }
+}
+
+#[template_callbacks]
+impl AuthorizationWindow {
+    #[template_callback]
+    fn handle_confirm(&self, _button: Button) {
+        let fp = self.fingerprint.text().as_str().trim().to_owned();
+        self.obj().emit_by_name("confirm-clicked", &[&fp])
+    }
+
+    #[template_callback]
+    fn handle_cancel(&self, _: Button) {
+        self.obj().emit_by_name("cancel-clicked", &[])
+    }
+
+    pub(super) fn set_fingerprint(&self, fingerprint: &str) {
+        self.fingerprint.set_text(fingerprint);
+    }
+}
+
+impl ObjectImpl for AuthorizationWindow {
+    fn signals() -> &'static [Signal] {
+        static SIGNALS: OnceLock<Vec<Signal>> = OnceLock::new();
+        SIGNALS.get_or_init(|| {
+            vec![
+                Signal::builder("confirm-clicked")
+                    .param_types([String::static_type()])
+                    .build(),
+                Signal::builder("cancel-clicked").build(),
+            ]
+        })
+    }
+}
+
+impl WidgetImpl for AuthorizationWindow {}
+impl WindowImpl for AuthorizationWindow {}
+impl ApplicationWindowImpl for AuthorizationWindow {}
+impl AdwWindowImpl for AuthorizationWindow {}

lan-mouse-gtk/src/client_object/imp.rs

@@ -13,7 +13,7 @@ use super::ClientData;
 #[properties(wrapper_type = super::ClientObject)]
 pub struct ClientObject {
     #[property(name = "handle", get, set, type = ClientHandle, member = handle)]
-    #[property(name = "hostname", get, set, type = String, member = hostname)]
+    #[property(name = "hostname", get, set, type = Option<String>, member = hostname)]
     #[property(name = "port", get, set, type = u32, member = port, maximum = u16::MAX as u32)]
     #[property(name = "active", get, set, type = bool, member = active)]
     #[property(name = "position", get, set, type = String, member = position)]

lan-mouse-gtk/src/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 lan_mouse_ipc::{DEFAULT_PORT, Position};
 
 use super::ClientObject;
 
@@ -15,25 +15,32 @@ glib::wrapper! {
 }
 
 impl ClientRow {
-    pub fn new(_client_object: &ClientObject) -> Self {
-        Object::builder().build()
+    pub fn new(client_object: &ClientObject) -> Self {
+        let client_row: Self = Object::builder().build();
+        client_row
+            .imp()
+            .client_object
+            .borrow_mut()
+            .replace(client_object.clone());
+        client_row
     }
 
     pub fn bind(&self, client_object: &ClientObject) {
         let mut bindings = self.imp().bindings.borrow_mut();
 
+        // bind client active to switch state
         let active_binding = client_object
             .bind_property("active", &self.imp().enable_switch.get(), "state")
-            .bidirectional()
             .sync_create()
             .build();
 
+        // bind client active to switch position
         let switch_position_binding = client_object
             .bind_property("active", &self.imp().enable_switch.get(), "active")
-            .bidirectional()
             .sync_create()
             .build();
 
+        // bind hostname to hostname edit field
         let hostname_binding = client_object
             .bind_property("hostname", &self.imp().hostname.get(), "text")
             .transform_to(|_, v: Option<String>| {
@@ -43,72 +50,48 @@ impl ClientRow {
                     Some("".to_string())
                 }
             })
-            .transform_from(|_, v: String| {
-                if v.as_str().trim() == "" {
-                    Some(None)
-                } else {
-                    Some(Some(v))
-                }
-            })
-            .bidirectional()
             .sync_create()
             .build();
 
+        // bind hostname to title
         let title_binding = client_object
             .bind_property("hostname", self, "title")
-            .transform_to(|_, v: Option<String>| {
-                if let Some(hostname) = v {
-                    Some(hostname)
-                } else {
-                    Some("<span font_style=\"italic\" font_weight=\"light\" foreground=\"darkgrey\">no hostname!</span>".to_string())
-                }
-            })
+            .transform_to(|_, v: Option<String>| v.or(Some("<span font_style=\"italic\" font_weight=\"light\" foreground=\"darkgrey\">no hostname!</span>".to_string())))
             .sync_create()
             .build();
 
+        // bind port to port edit field
         let port_binding = client_object
             .bind_property("port", &self.imp().port.get(), "text")
-            .transform_from(|_, v: String| {
-                if v.is_empty() {
-                    Some(DEFAULT_PORT as u32)
-                } else {
-                    Some(v.parse::<u16>().unwrap_or(DEFAULT_PORT) as u32)
-                }
-            })
             .transform_to(|_, v: u32| {
-                if v == 4242 {
+                if v == DEFAULT_PORT as u32 {
                     Some("".to_string())
                 } else {
                     Some(v.to_string())
                 }
             })
-            .bidirectional()
             .sync_create()
             .build();
 
+        // bind port to subtitle
         let subtitle_binding = client_object
             .bind_property("port", self, "subtitle")
             .sync_create()
             .build();
 
+        // bind position to selected position
         let position_binding = client_object
             .bind_property("position", &self.imp().position.get(), "selected")
-            .transform_from(|_, v: u32| match v {
-                1 => Some("right"),
-                2 => Some("top"),
-                3 => Some("bottom"),
-                _ => Some("left"),
-            })
             .transform_to(|_, v: String| match v.as_str() {
-                "right" => Some(1),
+                "right" => Some(1u32),
                 "top" => Some(2u32),
                 "bottom" => Some(3u32),
                 _ => Some(0u32),
             })
-            .bidirectional()
             .sync_create()
             .build();
 
+        // bind resolving status to spinner visibility
         let resolve_binding = client_object
             .bind_property(
                 "resolving",
@@ -118,6 +101,7 @@ impl ClientRow {
             .sync_create()
             .build();
 
+        // bind ips to tooltip-text
         let ip_binding = client_object
             .bind_property("ips", &self.imp().dns_button.get(), "tooltip-text")
             .transform_to(|_, ips: Vec<String>| {
@@ -146,4 +130,24 @@ impl ClientRow {
             binding.unbind();
         }
     }
+
+    pub fn set_active(&self, active: bool) {
+        self.imp().set_active(active);
+    }
+
+    pub fn set_hostname(&self, hostname: Option<String>) {
+        self.imp().set_hostname(hostname);
+    }
+
+    pub fn set_port(&self, port: u16) {
+        self.imp().set_port(port);
+    }
+
+    pub fn set_position(&self, pos: Position) {
+        self.imp().set_pos(pos);
+    }
+
+    pub fn set_dns_state(&self, resolved: bool) {
+        self.imp().set_dns_state(resolved);
+    }
 }

lan-mouse-gtk/src/client_row/imp.rs

@@ -1,13 +1,16 @@
 use std::cell::RefCell;
 
 use adw::subclass::prelude::*;
-use adw::{prelude::*, ActionRow, ComboRow};
-use glib::{subclass::InitializingObject, Binding};
-use gtk::glib::clone;
+use adw::{ActionRow, ComboRow, prelude::*};
+use glib::{Binding, subclass::InitializingObject};
 use gtk::glib::subclass::Signal;
-use gtk::{glib, Button, CompositeTemplate, Switch};
+use gtk::glib::{SignalHandlerId, clone};
+use gtk::{Button, CompositeTemplate, Entry, Switch, glib};
+use lan_mouse_ipc::Position;
 use std::sync::OnceLock;
 
+use crate::client_object::ClientObject;
+
 #[derive(CompositeTemplate, Default)]
 #[template(resource = "/de/feschber/LanMouse/client_row.ui")]
 pub struct ClientRow {
@@ -28,6 +31,11 @@ pub struct ClientRow {
     #[template_child]
     pub dns_loading_indicator: TemplateChild<gtk::Spinner>,
     pub bindings: RefCell<Vec<Binding>>,
+    hostname_change_handler: RefCell<Option<SignalHandlerId>>,
+    port_change_handler: RefCell<Option<SignalHandlerId>>,
+    position_change_handler: RefCell<Option<SignalHandlerId>>,
+    set_state_handler: RefCell<Option<SignalHandlerId>>,
+    pub client_object: RefCell<Option<ClientObject>>,
 }
 
 #[glib::object_subclass]
@@ -59,17 +67,61 @@ impl ObjectImpl for ClientRow {
                 row.handle_client_delete(button);
             }
         ));
+        let handler = self.hostname.connect_changed(clone!(
+            #[weak(rename_to = row)]
+            self,
+            move |entry| {
+                row.handle_hostname_changed(entry);
+            }
+        ));
+        self.hostname_change_handler.replace(Some(handler));
+        let handler = self.port.connect_changed(clone!(
+            #[weak(rename_to = row)]
+            self,
+            move |entry| {
+                row.handle_port_changed(entry);
+            }
+        ));
+        self.port_change_handler.replace(Some(handler));
+        let handler = self.position.connect_selected_notify(clone!(
+            #[weak(rename_to = row)]
+            self,
+            move |position| {
+                row.handle_position_changed(position);
+            }
+        ));
+        self.position_change_handler.replace(Some(handler));
+        let handler = self.enable_switch.connect_state_set(clone!(
+            #[weak(rename_to = row)]
+            self,
+            #[upgrade_or]
+            glib::Propagation::Proceed,
+            move |switch, state| {
+                row.handle_activate_switch(state, switch);
+                glib::Propagation::Proceed
+            }
+        ));
+        self.set_state_handler.replace(Some(handler));
     }
 
     fn signals() -> &'static [glib::subclass::Signal] {
         static SIGNALS: OnceLock<Vec<Signal>> = OnceLock::new();
         SIGNALS.get_or_init(|| {
             vec![
-                Signal::builder("request-dns").build(),
-                Signal::builder("request-update")
+                Signal::builder("request-activate")
                     .param_types([bool::static_type()])
                     .build(),
                 Signal::builder("request-delete").build(),
+                Signal::builder("request-dns").build(),
+                Signal::builder("request-hostname-change")
+                    .param_types([String::static_type()])
+                    .build(),
+                Signal::builder("request-port-change")
+                    .param_types([u32::static_type()])
+                    .build(),
+                Signal::builder("request-position-change")
+                    .param_types([u32::static_type()])
+                    .build(),
             ]
         })
     }
@@ -78,22 +130,97 @@ impl ObjectImpl for ClientRow {
 #[gtk::template_callbacks]
 impl ClientRow {
     #[template_callback]
-    fn handle_client_set_state(&self, state: bool, _switch: &Switch) -> bool {
-        log::debug!("state change -> requesting update");
-        self.obj().emit_by_name::<()>("request-update", &[&state]);
+    fn handle_activate_switch(&self, state: bool, _switch: &Switch) -> bool {
+        self.obj().emit_by_name::<()>("request-activate", &[&state]);
         true // dont run default handler
     }
 
     #[template_callback]
-    fn handle_request_dns(&self, _: Button) {
+    fn handle_request_dns(&self, _: &Button) {
         self.obj().emit_by_name::<()>("request-dns", &[]);
     }
 
     #[template_callback]
     fn handle_client_delete(&self, _button: &Button) {
-        log::debug!("delete button pressed -> requesting delete");
         self.obj().emit_by_name::<()>("request-delete", &[]);
     }
+
+    fn handle_port_changed(&self, port_entry: &Entry) {
+        if let Ok(port) = port_entry.text().parse::<u16>() {
+            self.obj()
+                .emit_by_name::<()>("request-port-change", &[&(port as u32)]);
+        }
+    }
+
+    fn handle_hostname_changed(&self, hostname_entry: &Entry) {
+        self.obj()
+            .emit_by_name::<()>("request-hostname-change", &[&hostname_entry.text()]);
+    }
+
+    fn handle_position_changed(&self, position: &ComboRow) {
+        self.obj()
+            .emit_by_name("request-position-change", &[&position.selected()])
+    }
+
+    pub(super) fn set_hostname(&self, hostname: Option<String>) {
+        let position = self.hostname.position();
+        let handler = self.hostname_change_handler.borrow();
+        let handler = handler.as_ref().expect("signal handler");
+        self.hostname.block_signal(handler);
+        self.client_object
+            .borrow_mut()
+            .as_mut()
+            .expect("client object")
+            .set_property("hostname", hostname);
+        self.hostname.unblock_signal(handler);
+        self.hostname.set_position(position);
+    }
+
+    pub(super) fn set_port(&self, port: u16) {
+        let position = self.port.position();
+        let handler = self.port_change_handler.borrow();
+        let handler = handler.as_ref().expect("signal handler");
+        self.port.block_signal(handler);
+        self.client_object
+            .borrow_mut()
+            .as_mut()
+            .expect("client object")
+            .set_port(port as u32);
+        self.port.unblock_signal(handler);
+        self.port.set_position(position);
+    }
+
+    pub(super) fn set_pos(&self, pos: Position) {
+        let handler = self.position_change_handler.borrow();
+        let handler = handler.as_ref().expect("signal handler");
+        self.position.block_signal(handler);
+        self.client_object
+            .borrow_mut()
+            .as_mut()
+            .expect("client object")
+            .set_position(pos.to_string());
+        self.position.unblock_signal(handler);
+    }
+
+    pub(super) fn set_active(&self, active: bool) {
+        let handler = self.set_state_handler.borrow();
+        let handler = handler.as_ref().expect("signal handler");
+        self.enable_switch.block_signal(handler);
+        self.client_object
+            .borrow_mut()
+            .as_mut()
+            .expect("client object")
+            .set_active(active);
+        self.enable_switch.unblock_signal(handler);
+    }
+
+    pub(super) fn set_dns_state(&self, resolved: bool) {
+        if resolved {
+            self.dns_button.set_css_classes(&["success"])
+        } else {
+            self.dns_button.set_css_classes(&["warning"])
+        }
+    }
 }
 
 impl WidgetImpl for ClientRow {}

lan-mouse-gtk/src/fingerprint_window.rs

@@ -1,7 +1,7 @@
 mod imp;
 
 use glib::Object;
-use gtk::{gio, glib};
+use gtk::{gio, glib, prelude::ObjectExt, subclass::prelude::ObjectSubclassIsExt};
 
 glib::wrapper! {
     pub struct FingerprintWindow(ObjectSubclass<imp::FingerprintWindow>)
@@ -11,8 +11,12 @@ glib::wrapper! {
 }
 
 impl FingerprintWindow {
-    pub(crate) fn new() -> Self {
+    pub(crate) fn new(fingerprint: Option<String>) -> Self {
         let window: Self = Object::builder().build();
+        if let Some(fp) = fingerprint {
+            window.imp().fingerprint.set_property("text", fp);
+            window.imp().fingerprint.set_property("editable", false);
+        }
         window
     }
 }

lan-mouse-gtk/src/fingerprint_window/imp.rs

@@ -4,8 +4,9 @@ use adw::prelude::*;
 use adw::subclass::prelude::*;
 use glib::subclass::InitializingObject;
 use gtk::{
+    Button, CompositeTemplate, Text,
     glib::{self, subclass::Signal},
-    template_callbacks, Button, CompositeTemplate, Text,
+    template_callbacks,
 };
 
 #[derive(CompositeTemplate, Default)]
@@ -51,9 +52,11 @@ impl ObjectImpl for FingerprintWindow {
     fn signals() -> &'static [Signal] {
         static SIGNALS: OnceLock<Vec<Signal>> = OnceLock::new();
         SIGNALS.get_or_init(|| {
-            vec![Signal::builder("confirm-clicked")
-                .param_types([String::static_type(), String::static_type()])
-                .build()]
+            vec![
+                Signal::builder("confirm-clicked")
+                    .param_types([String::static_type(), String::static_type()])
+                    .build(),
+            ]
         })
     }
 }

lan-mouse-gtk/src/key_row.rs

@@ -8,7 +8,7 @@ use super::KeyObject;
 
 glib::wrapper! {
     pub struct KeyRow(ObjectSubclass<imp::KeyRow>)
-    @extends gtk::ListBoxRow, gtk::Widget, adw::PreferencesRow, adw::ExpanderRow,
+    @extends gtk::ListBoxRow, gtk::Widget, adw::PreferencesRow, adw::ActionRow,
     @implements gtk::Accessible, gtk::Actionable, gtk::Buildable, gtk::ConstraintTarget;
 }
 

lan-mouse-gtk/src/key_row/imp.rs

@@ -1,11 +1,11 @@
 use std::cell::RefCell;
 
 use adw::subclass::prelude::*;
-use adw::{prelude::*, ActionRow};
-use glib::{subclass::InitializingObject, Binding};
+use adw::{ActionRow, prelude::*};
+use glib::{Binding, subclass::InitializingObject};
 use gtk::glib::clone;
 use gtk::glib::subclass::Signal;
-use gtk::{glib, Button, CompositeTemplate};
+use gtk::{Button, CompositeTemplate, glib};
 use std::sync::OnceLock;
 
 #[derive(CompositeTemplate, Default)]

lan-mouse-gtk/src/lib.rs

@@ -1,3 +1,4 @@
+mod authorization_window;
 mod client_object;
 mod client_row;
 mod fingerprint_window;
@@ -9,18 +10,24 @@ use std::{env, process, str};
 
 use window::Window;
 
-use lan_mouse_ipc::{FrontendEvent, FrontendRequest};
+use lan_mouse_ipc::FrontendEvent;
 
 use adw::Application;
-use gtk::{
-    gdk::Display, glib::clone, prelude::*, subclass::prelude::ObjectSubclassIsExt, IconTheme,
-};
+use gtk::{IconTheme, gdk::Display, glib::clone, prelude::*};
 use gtk::{gio, glib, prelude::ApplicationExt};
 
 use self::client_object::ClientObject;
 use self::key_object::KeyObject;
 
-pub fn run() -> glib::ExitCode {
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum GtkError {
+    #[error("gtk frontend exited with non zero exit code: {0}")]
+    NonZeroExitCode(i32),
+}
+
+pub fn run() -> Result<(), GtkError> {
     log::debug!("running gtk frontend");
     #[cfg(windows)]
     let ret = std::thread::Builder::new()
@@ -33,13 +40,10 @@ pub fn run() -> glib::ExitCode {
     #[cfg(not(windows))]
     let ret = gtk_main();
 
-    if ret == glib::ExitCode::FAILURE {
-        log::error!("frontend exited with failure");
-    } else {
-        log::info!("frontend exited successfully");
+    match ret {
+        glib::ExitCode::SUCCESS => Ok(()),
+        e => Err(GtkError::NonZeroExitCode(e.value())),
     }
-
-    ret
 }
 
 fn gtk_main() -> glib::ExitCode {
@@ -49,7 +53,11 @@ fn gtk_main() -> glib::ExitCode {
         .application_id("de.feschber.LanMouse")
         .build();
 
-    app.connect_startup(|_| load_icons());
+    app.connect_startup(|app| {
+        load_icons();
+        setup_actions(app);
+        setup_menu(app);
+    });
     app.connect_activate(build_ui);
 
     let args: Vec<&'static str> = vec![];
@@ -62,6 +70,33 @@ fn load_icons() {
     icon_theme.add_resource_path("/de/feschber/LanMouse/icons");
 }
 
+// Add application actions
+fn setup_actions(app: &adw::Application) {
+    // Quit action
+    // This is important on macOS, where users expect a File->Quit action with a Cmd+Q shortcut.
+    let quit_action = gio::SimpleAction::new("quit", None);
+    quit_action.connect_activate({
+        let app = app.clone();
+        move |_, _| {
+            app.quit();
+        }
+    });
+    app.add_action(&quit_action);
+}
+
+// Set up a global menu
+//
+// Currently this is used only on macOS
+fn setup_menu(app: &adw::Application) {
+    let menu = gio::Menu::new();
+
+    let file_menu = gio::Menu::new();
+    file_menu.append(Some("Quit"), Some("app.quit"));
+    menu.append_submenu(Some("_File"), &file_menu);
+
+    app.set_menubar(Some(&menu))
+}
+
 fn build_ui(app: &Application) {
     log::debug!("connecting to lan-mouse-socket");
     let (mut frontend_rx, frontend_tx) = match lan_mouse_ipc::connect() {
@@ -96,54 +131,41 @@ 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);
-                    }
-                    FrontendEvent::Deleted(client) => {
-                        window.delete_client(client);
+                        window.new_client(handle, client, state)
                     }
+                    FrontendEvent::Deleted(client) => window.delete_client(client),
                     FrontendEvent::State(handle, config, state) => {
                         window.update_client_config(handle, config);
                         window.update_client_state(handle, state);
                     }
                     FrontendEvent::NoSuchClient(_) => {}
-                    FrontendEvent::Error(e) => {
-                        window.show_toast(e.as_str());
+                    FrontendEvent::Error(e) => window.show_toast(e.as_str()),
+                    FrontendEvent::Enumerate(clients) => window.update_client_list(clients),
+                    FrontendEvent::PortChanged(port, msg) => window.update_port(port, msg),
+                    FrontendEvent::CaptureStatus(s) => window.set_capture(s.into()),
+                    FrontendEvent::EmulationStatus(s) => window.set_emulation(s.into()),
+                    FrontendEvent::AuthorizedUpdated(keys) => window.set_authorized_keys(keys),
+                    FrontendEvent::PublicKeyFingerprint(fp) => window.set_pk_fp(&fp),
+                    FrontendEvent::ConnectionAttempt { fingerprint } => {
+                        window.request_authorization(&fingerprint);
                     }
-                    FrontendEvent::Enumerate(clients) => {
-                        for (handle, client, state) in clients {
-                            if window.client_idx(handle).is_some() {
-                                window.update_client_config(handle, client);
-                                window.update_client_state(handle, state);
-                            } else {
-                                window.new_client(handle, client, state);
-                            }
-                        }
+                    FrontendEvent::DeviceConnected {
+                        fingerprint: _,
+                        addr,
+                    } => {
+                        window.show_toast(format!("device connected: {addr}").as_str());
                     }
-                    FrontendEvent::PortChanged(port, msg) => {
-                        match msg {
-                            None => window.show_toast(format!("port changed: {port}").as_str()),
-                            Some(msg) => window.show_toast(msg.as_str()),
-                        }
-                        window.imp().set_port(port);
+                    FrontendEvent::DeviceEntered {
+                        fingerprint: _,
+                        addr,
+                        pos,
+                    } => {
+                        window.show_toast(format!("device entered: {addr} ({pos})").as_str());
                     }
-                    FrontendEvent::CaptureStatus(s) => {
-                        window.set_capture(s.into());
+                    FrontendEvent::IncomingDisconnected(addr) => {
+                        window.show_toast(format!("{addr} disconnected").as_str());
                     }
-                    FrontendEvent::EmulationStatus(s) => {
-                        window.set_emulation(s.into());
-                    }
-                    FrontendEvent::AuthorizedUpdated(keys) => {
-                        window.set_authorized_keys(keys);
-                    }
-                    FrontendEvent::PublicKeyFingerprint(fp) => {
-                        window.set_pk_fp(&fp);
-                    }
-                    FrontendEvent::IncomingConnected(..) => {}
-                    FrontendEvent::IncomingDisconnected(..) => {}
                 }
             }
         }

lan-mouse-gtk/src/window.rs

@@ -4,19 +4,21 @@ use std::collections::HashMap;
 
 use adw::prelude::*;
 use adw::subclass::prelude::*;
-use glib::{clone, Object};
+use glib::{Object, clone};
 use gtk::{
-    gio,
+    NoSelection, gio,
     glib::{self, closure_local},
-    ListBox, NoSelection,
 };
 
 use lan_mouse_ipc::{
-    ClientConfig, ClientHandle, ClientState, FrontendRequest, FrontendRequestWriter, Position,
-    DEFAULT_PORT,
+    ClientConfig, ClientHandle, ClientState, DEFAULT_PORT, FrontendRequest, FrontendRequestWriter,
+    Position,
 };
 
-use crate::{fingerprint_window::FingerprintWindow, key_object::KeyObject, key_row::KeyRow};
+use crate::{
+    authorization_window::AuthorizationWindow, fingerprint_window::FingerprintWindow,
+    key_object::KeyObject, key_row::KeyRow,
+};
 
 use super::{client_object::ClientObject, client_row::ClientRow};
 
@@ -28,7 +30,7 @@ glib::wrapper! {
 }
 
 impl Window {
-    pub(crate) fn new(app: &adw::Application, conn: FrontendRequestWriter) -> Self {
+    pub(super) fn new(app: &adw::Application, conn: FrontendRequestWriter) -> Self {
         let window: Self = Object::builder().property("application", app).build();
         window
             .imp()
@@ -38,7 +40,7 @@ impl Window {
         window
     }
 
-    pub fn clients(&self) -> gio::ListStore {
+    fn clients(&self) -> gio::ListStore {
         self.imp()
             .clients
             .borrow()
@@ -46,7 +48,7 @@ impl Window {
             .expect("Could not get clients")
     }
 
-    pub fn authorized(&self) -> gio::ListStore {
+    fn authorized(&self) -> gio::ListStore {
         self.imp()
             .authorized
             .borrow()
@@ -62,6 +64,14 @@ impl Window {
         self.authorized().item(idx).map(|o| o.downcast().unwrap())
     }
 
+    fn row_by_idx(&self, idx: i32) -> Option<ClientRow> {
+        self.imp()
+            .client_list
+            .get()
+            .row_at_index(idx)
+            .map(|o| o.downcast().expect("expected ClientRow"))
+    }
+
     fn setup_authorized(&self) {
         let store = gio::ListStore::new::<KeyObject>();
         self.imp().authorized.replace(Some(store));
@@ -112,16 +122,57 @@ impl Window {
                         .expect("Expected object of type `ClientObject`.");
                     let row = window.create_client_row(client_object);
                     row.connect_closure(
-                        "request-update",
+                        "request-hostname-change",
+                        false,
+                        closure_local!(
+                            #[strong]
+                            window,
+                            move |row: ClientRow, hostname: String| {
+                                log::debug!("request-hostname-change");
+                                if let Some(client) = window.client_by_idx(row.index() as u32) {
+                                    let hostname = Some(hostname).filter(|s| !s.is_empty());
+                                    /* changed in response to FrontendEvent
+                                     * -> do not request additional update */
+                                    window.request(FrontendRequest::UpdateHostname(
+                                        client.handle(),
+                                        hostname,
+                                    ));
+                                }
+                            }
+                        ),
+                    );
+                    row.connect_closure(
+                        "request-port-change",
+                        false,
+                        closure_local!(
+                            #[strong]
+                            window,
+                            move |row: ClientRow, port: u32| {
+                                if let Some(client) = window.client_by_idx(row.index() as u32) {
+                                    window.request(FrontendRequest::UpdatePort(
+                                        client.handle(),
+                                        port as u16,
+                                    ));
+                                }
+                            }
+                        ),
+                    );
+                    row.connect_closure(
+                        "request-activate",
                         false,
                         closure_local!(
                             #[strong]
                             window,
                             move |row: ClientRow, active: bool| {
                                 if let Some(client) = window.client_by_idx(row.index() as u32) {
-                                    window.request_client_activate(&client, active);
-                                    window.request_client_update(&client);
-                                    window.request_client_state(&client);
+                                    log::debug!(
+                                        "request: {} client",
+                                        if active { "activating" } else { "deactivating" }
+                                    );
+                                    window.request(FrontendRequest::Activate(
+                                        client.handle(),
+                                        active,
+                                    ));
                                 }
                             }
                         ),
@@ -134,7 +185,7 @@ impl Window {
                             window,
                             move |row: ClientRow| {
                                 if let Some(client) = window.client_by_idx(row.index() as u32) {
-                                    window.request_client_delete(&client);
+                                    window.request(FrontendRequest::Delete(client.handle()));
                                 }
                             }
                         ),
@@ -147,9 +198,31 @@ impl Window {
                             window,
                             move |row: ClientRow| {
                                 if let Some(client) = window.client_by_idx(row.index() as u32) {
-                                    window.request_client_update(&client);
-                                    window.request_dns(&client);
-                                    window.request_client_state(&client);
+                                    window.request(FrontendRequest::ResolveDns(
+                                        client.get_data().handle,
+                                    ));
+                                }
+                            }
+                        ),
+                    );
+                    row.connect_closure(
+                        "request-position-change",
+                        false,
+                        closure_local!(
+                            #[strong]
+                            window,
+                            move |row: ClientRow, pos_idx: u32| {
+                                if let Some(client) = window.client_by_idx(row.index() as u32) {
+                                    let position = match pos_idx {
+                                        0 => Position::Left,
+                                        1 => Position::Right,
+                                        2 => Position::Top,
+                                        _ => Position::Bottom,
+                                    };
+                                    window.request(FrontendRequest::UpdatePosition(
+                                        client.handle(),
+                                        position,
+                                    ));
                                 }
                             }
                         ),
@@ -160,10 +233,14 @@ impl Window {
         );
     }
 
+    fn setup_icon(&self) {
+        self.set_icon_name(Some("de.feschber.LanMouse"));
+    }
+
     /// workaround for a bug in libadwaita that shows an ugly line beneath
     /// the last element if a placeholder is set.
     /// https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/6308
-    pub fn update_placeholder_visibility(&self) {
+    fn update_placeholder_visibility(&self) {
         let visible = self.clients().n_items() == 0;
         let placeholder = self.imp().client_placeholder.get();
         self.imp().client_list.set_placeholder(match visible {
@@ -172,7 +249,7 @@ impl Window {
         });
     }
 
-    pub fn update_auth_placeholder_visibility(&self) {
+    fn update_auth_placeholder_visibility(&self) {
         let visible = self.authorized().n_items() == 0;
         let placeholder = self.imp().authorized_placeholder.get();
         self.imp().authorized_list.set_placeholder(match visible {
@@ -181,10 +258,6 @@ impl Window {
         });
     }
 
-    fn setup_icon(&self) {
-        self.set_icon_name(Some("de.feschber.LanMouse"));
-    }
-
     fn create_client_row(&self, client_object: &ClientObject) -> ClientRow {
         let row = ClientRow::new(client_object);
         row.bind(client_object);
@@ -197,24 +270,46 @@ impl Window {
         row
     }
 
-    pub fn new_client(&self, handle: ClientHandle, client: ClientConfig, state: ClientState) {
+    pub(super) fn new_client(
+        &self,
+        handle: ClientHandle,
+        client: ClientConfig,
+        state: ClientState,
+    ) {
         let client = ClientObject::new(handle, client, state.clone());
         self.clients().append(&client);
         self.update_placeholder_visibility();
         self.update_dns_state(handle, !state.ips.is_empty());
     }
 
-    pub fn client_idx(&self, handle: ClientHandle) -> Option<usize> {
-        self.clients().iter::<ClientObject>().position(|c| {
-            if let Ok(c) = c {
-                c.handle() == handle
+    pub(super) fn update_client_list(
+        &self,
+        clients: Vec<(ClientHandle, ClientConfig, ClientState)>,
+    ) {
+        for (handle, client, state) in clients {
+            if self.client_idx(handle).is_some() {
+                self.update_client_config(handle, client);
+                self.update_client_state(handle, state);
             } else {
-                false
+                self.new_client(handle, client, state);
             }
-        })
+        }
     }
 
-    pub fn delete_client(&self, handle: ClientHandle) {
+    pub(super) fn update_port(&self, port: u16, msg: Option<String>) {
+        if let Some(msg) = msg {
+            self.show_toast(msg.as_str());
+        }
+        self.imp().set_port(port);
+    }
+
+    fn client_idx(&self, handle: ClientHandle) -> Option<usize> {
+        self.clients()
+            .iter::<ClientObject>()
+            .position(|c| c.ok().map(|c| c.handle() == handle).unwrap_or_default())
+    }
+
+    pub(super) fn delete_client(&self, handle: ClientHandle) {
         let Some(idx) = self.client_idx(handle) else {
             log::warn!("could not find client with handle {handle}");
             return;
@@ -226,46 +321,31 @@ impl Window {
         }
     }
 
-    pub fn update_client_config(&self, handle: ClientHandle, client: ClientConfig) {
-        let Some(idx) = self.client_idx(handle) else {
-            log::warn!("could not find client with handle {}", handle);
+    pub(super) fn update_client_config(&self, handle: ClientHandle, client: ClientConfig) {
+        let Some(row) = self.row_for_handle(handle) else {
+            log::warn!("could not find row for handle {handle}");
             return;
         };
-        let client_object = self.clients().item(idx as u32).unwrap();
-        let client_object: &ClientObject = client_object.downcast_ref().unwrap();
-        let data = client_object.get_data();
-
-        /* only change if it actually has changed, otherwise
-         * the update signal is triggered */
-        if data.hostname != client.hostname {
-            client_object.set_hostname(client.hostname.unwrap_or("".into()));
-        }
-        if data.port != client.port as u32 {
-            client_object.set_port(client.port as u32);
-        }
-        if data.position != client.pos.to_string() {
-            client_object.set_position(client.pos.to_string());
-        }
+        row.set_hostname(client.hostname);
+        row.set_port(client.port);
+        row.set_position(client.pos);
     }
 
-    pub fn update_client_state(&self, handle: ClientHandle, state: ClientState) {
-        let Some(idx) = self.client_idx(handle) else {
-            log::warn!("could not find client with handle {}", handle);
+    pub(super) fn update_client_state(&self, handle: ClientHandle, state: ClientState) {
+        let Some(row) = self.row_for_handle(handle) else {
+            log::warn!("could not find row for handle {handle}");
+            return;
+        };
+        let Some(client_object) = self.client_object_for_handle(handle) else {
+            log::warn!("could not find row for handle {handle}");
             return;
         };
-        let client_object = self.clients().item(idx as u32).unwrap();
-        let client_object: &ClientObject = client_object.downcast_ref().unwrap();
-        let data = client_object.get_data();
 
-        if state.active != data.active {
-            client_object.set_active(state.active);
-            log::debug!("set active to {}", state.active);
-        }
+        /* activation state */
+        row.set_active(state.active);
 
-        if state.resolving != data.resolving {
-            client_object.set_resolving(state.resolving);
-            log::debug!("resolving {}: {}", data.handle, state.resolving);
-        }
+        /* dns state */
+        client_object.set_resolving(state.resolving);
 
         self.update_dns_state(handle, !state.ips.is_empty());
         let ips = state
@@ -276,22 +356,23 @@ impl Window {
         client_object.set_ips(ips);
     }
 
-    pub fn update_dns_state(&self, handle: ClientHandle, resolved: bool) {
-        let Some(idx) = self.client_idx(handle) else {
-            log::warn!("could not find client with handle {}", handle);
-            return;
-        };
-        let list_box: ListBox = self.imp().client_list.get();
-        let row = list_box.row_at_index(idx as i32).unwrap();
-        let client_row: ClientRow = row.downcast().expect("expected ClientRow Object");
-        if resolved {
-            client_row.imp().dns_button.set_css_classes(&["success"])
-        } else {
-            client_row.imp().dns_button.set_css_classes(&["warning"])
+    fn client_object_for_handle(&self, handle: ClientHandle) -> Option<ClientObject> {
+        self.client_idx(handle)
+            .and_then(|i| self.client_by_idx(i as u32))
+    }
+
+    fn row_for_handle(&self, handle: ClientHandle) -> Option<ClientRow> {
+        self.client_idx(handle)
+            .and_then(|i| self.row_by_idx(i as i32))
+    }
+
+    fn update_dns_state(&self, handle: ClientHandle, resolved: bool) {
+        if let Some(client_row) = self.row_for_handle(handle) {
+            client_row.set_dns_state(resolved);
         }
     }
 
-    pub fn request_port_change(&self) {
+    fn request_port_change(&self) {
         let port = self
             .imp()
             .port_entry
@@ -303,56 +384,20 @@ impl Window {
         self.request(FrontendRequest::ChangePort(port));
     }
 
-    pub fn request_capture(&self) {
+    fn request_capture(&self) {
         self.request(FrontendRequest::EnableCapture);
     }
 
-    pub fn request_emulation(&self) {
+    fn request_emulation(&self) {
         self.request(FrontendRequest::EnableEmulation);
     }
 
-    pub fn request_client_state(&self, client: &ClientObject) {
-        self.request_client_state_for(client.handle());
-    }
-
-    pub fn request_client_state_for(&self, handle: ClientHandle) {
-        self.request(FrontendRequest::GetState(handle));
-    }
-
-    pub fn request_client_create(&self) {
+    fn request_client_create(&self) {
         self.request(FrontendRequest::Create);
     }
 
-    pub fn request_dns(&self, client: &ClientObject) {
-        self.request(FrontendRequest::ResolveDns(client.get_data().handle));
-    }
-
-    pub fn request_client_update(&self, client: &ClientObject) {
-        let handle = client.handle();
-        let data = client.get_data();
-        let position = Position::try_from(data.position.as_str()).expect("invalid position");
-        let hostname = data.hostname;
-        let port = data.port as u16;
-
-        for event in [
-            FrontendRequest::UpdateHostname(handle, hostname),
-            FrontendRequest::UpdatePosition(handle, position),
-            FrontendRequest::UpdatePort(handle, port),
-        ] {
-            self.request(event);
-        }
-    }
-
-    pub fn request_client_activate(&self, client: &ClientObject, active: bool) {
-        self.request(FrontendRequest::Activate(client.handle(), active));
-    }
-
-    pub fn request_client_delete(&self, client: &ClientObject) {
-        self.request(FrontendRequest::Delete(client.handle()));
-    }
-
-    pub fn open_fingerprint_dialog(&self) {
-        let window = FingerprintWindow::new();
+    fn open_fingerprint_dialog(&self, fp: Option<String>) {
+        let window = FingerprintWindow::new(fp);
         window.set_transient_for(Some(self));
         window.connect_closure(
             "confirm-clicked",
@@ -369,15 +414,15 @@ impl Window {
         window.present();
     }
 
-    pub fn request_fingerprint_add(&self, desc: String, fp: String) {
+    fn request_fingerprint_add(&self, desc: String, fp: String) {
         self.request(FrontendRequest::AuthorizeKey(desc, fp));
     }
 
-    pub fn request_fingerprint_remove(&self, fp: String) {
+    fn request_fingerprint_remove(&self, fp: String) {
         self.request(FrontendRequest::RemoveAuthorizedKey(fp));
     }
 
-    pub fn request(&self, request: FrontendRequest) {
+    fn request(&self, request: FrontendRequest) {
         let mut requester = self.imp().frontend_request_writer.borrow_mut();
         let requester = requester.as_mut().unwrap();
         if let Err(e) = requester.request(request) {
@@ -385,18 +430,18 @@ impl Window {
         };
     }
 
-    pub fn show_toast(&self, msg: &str) {
+    pub(super) fn show_toast(&self, msg: &str) {
         let toast = adw::Toast::new(msg);
         let toast_overlay = &self.imp().toast_overlay;
         toast_overlay.add_toast(toast);
     }
 
-    pub fn set_capture(&self, active: bool) {
+    pub(super) fn set_capture(&self, active: bool) {
         self.imp().capture_active.replace(active);
         self.update_capture_emulation_status();
     }
 
-    pub fn set_emulation(&self, active: bool) {
+    pub(super) fn set_emulation(&self, active: bool) {
         self.imp().emulation_active.replace(active);
         self.update_capture_emulation_status();
     }
@@ -411,7 +456,7 @@ impl Window {
             .set_visible(!capture || !emulation);
     }
 
-    pub(crate) fn set_authorized_keys(&self, fingerprints: HashMap<String, String>) {
+    pub(super) fn set_authorized_keys(&self, fingerprints: HashMap<String, String>) {
         let authorized = self.authorized();
         // clear list
         authorized.remove_all();
@@ -423,7 +468,36 @@ impl Window {
         self.update_auth_placeholder_visibility();
     }
 
-    pub(crate) fn set_pk_fp(&self, fingerprint: &str) {
+    pub(super) fn set_pk_fp(&self, fingerprint: &str) {
         self.imp().fingerprint_row.set_subtitle(fingerprint);
     }
+
+    pub(super) fn request_authorization(&self, fingerprint: &str) {
+        if let Some(w) = self.imp().authorization_window.borrow_mut().take() {
+            w.close();
+        }
+        let window = AuthorizationWindow::new(fingerprint);
+        window.set_transient_for(Some(self));
+        window.connect_closure(
+            "confirm-clicked",
+            false,
+            closure_local!(
+                #[strong(rename_to = parent)]
+                self,
+                move |w: AuthorizationWindow, fp: String| {
+                    w.close();
+                    parent.open_fingerprint_dialog(Some(fp));
+                }
+            ),
+        );
+        window.connect_closure(
+            "cancel-clicked",
+            false,
+            closure_local!(move |w: AuthorizationWindow| {
+                w.close();
+            }),
+        );
+        window.present();
+        self.imp().authorization_window.replace(Some(window));
+    }
 }

lan-mouse-gtk/src/window/imp.rs

@@ -1,12 +1,14 @@
 use std::cell::{Cell, RefCell};
 
 use adw::subclass::prelude::*;
-use adw::{prelude::*, ActionRow, PreferencesGroup, ToastOverlay};
+use adw::{ActionRow, PreferencesGroup, ToastOverlay, prelude::*};
 use glib::subclass::InitializingObject;
 use gtk::glib::clone;
-use gtk::{gdk, gio, glib, Button, CompositeTemplate, Entry, Image, Label, ListBox};
+use gtk::{Button, CompositeTemplate, Entry, Image, Label, ListBox, gdk, gio, glib};
 
-use lan_mouse_ipc::{FrontendRequestWriter, DEFAULT_PORT};
+use lan_mouse_ipc::{DEFAULT_PORT, FrontendRequestWriter};
+
+use crate::authorization_window::AuthorizationWindow;
 
 #[derive(CompositeTemplate, Default)]
 #[template(resource = "/de/feschber/LanMouse/window.ui")]
@@ -49,6 +51,7 @@ pub struct Window {
     pub port: Cell<u16>,
     pub capture_active: Cell<bool>,
     pub emulation_active: Cell<bool>,
+    pub authorization_window: RefCell<Option<AuthorizationWindow>>,
 }
 
 #[glib::object_subclass]
@@ -149,7 +152,7 @@ impl Window {
 
     #[template_callback]
     fn handle_add_cert_fingerprint(&self, _button: &Button) {
-        self.obj().open_fingerprint_dialog();
+        self.obj().open_fingerprint_dialog(None);
     }
 
     pub fn set_port(&self, port: u16) {

lan-mouse-ipc/Cargo.toml

@@ -12,5 +12,5 @@ log = "0.4.22"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0.107"
 thiserror = "2.0.0"
-tokio = { version = "1.32.0", features = ["net", "io-util", "time"] }
+tokio = { version = "1.32.0", features = ["macros", "net", "io-util", "time"] }
 tokio-stream = { version = "0.1.15", features = ["io-util"] }

lan-mouse-ipc/src/connect.rs

@@ -1,7 +1,7 @@
 use crate::{ConnectionError, FrontendEvent, FrontendRequest, IpcError};
 use std::{
     cmp::min,
-    io::{self, prelude::*, BufReader, LineWriter, Lines},
+    io::{self, BufReader, LineWriter, Lines, prelude::*},
     thread,
     time::Duration,
 };

lan-mouse-ipc/src/connect_async.rs

@@ -1,8 +1,7 @@
 use crate::{ConnectionError, FrontendEvent, FrontendRequest, IpcError};
 use std::{
     cmp::min,
-    io,
-    task::{ready, Poll},
+    task::{Poll, ready},
     time::Duration,
 };
 
@@ -47,7 +46,7 @@ impl Stream for AsyncFrontendEventReader {
 }
 
 impl AsyncFrontendRequestWriter {
-    pub async fn request(&mut self, request: FrontendRequest) -> Result<(), io::Error> {
+    pub async fn request(&mut self, request: FrontendRequest) -> Result<(), IpcError> {
         let mut json = serde_json::to_string(&request).unwrap();
         log::debug!("requesting: {json}");
         json.push('\n');
@@ -57,8 +56,16 @@ impl AsyncFrontendRequestWriter {
 }
 
 pub async fn connect_async(
+    timeout: Option<Duration>,
 ) -> Result<(AsyncFrontendEventReader, AsyncFrontendRequestWriter), ConnectionError> {
-    let stream = wait_for_service().await?;
+    let stream = if let Some(duration) = timeout {
+        tokio::select! {
+            s = wait_for_service() => s?,
+            _ = tokio::time::sleep(duration) => return Err(ConnectionError::Timeout),
+        }
+    } else {
+        wait_for_service().await?
+    };
     #[cfg(unix)]
     let (rx, tx): (ReadHalf<UnixStream>, WriteHalf<UnixStream>) = tokio::io::split(stream);
     #[cfg(windows)]

lan-mouse-ipc/src/lib.rs

@@ -20,8 +20,8 @@ mod connect;
 mod connect_async;
 mod listen;
 
-pub use connect::{connect, FrontendEventReader, FrontendRequestWriter};
-pub use connect_async::{connect_async, AsyncFrontendEventReader, AsyncFrontendRequestWriter};
+pub use connect::{FrontendEventReader, FrontendRequestWriter, connect};
+pub use connect_async::{AsyncFrontendEventReader, AsyncFrontendRequestWriter, connect_async};
 pub use listen::AsyncFrontendListener;
 
 #[derive(Debug, Error)]
@@ -30,6 +30,8 @@ pub enum ConnectionError {
     SocketPath(#[from] SocketPathError),
     #[error(transparent)]
     Io(#[from] io::Error),
+    #[error("connection timed out")]
+    Timeout,
 }
 
 #[derive(Debug, Error)]
@@ -57,6 +59,7 @@ pub enum IpcError {
 pub const DEFAULT_PORT: u16 = 4242;
 
 #[derive(Debug, Default, Eq, Hash, PartialEq, Clone, Copy, Serialize, Deserialize)]
+#[serde(rename_all = "lowercase")]
 pub enum Position {
     #[default]
     Left,
@@ -177,8 +180,6 @@ pub struct ClientState {
 
 #[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
@@ -201,10 +202,21 @@ pub enum FrontendEvent {
     AuthorizedUpdated(HashMap<String, String>),
     /// public key fingerprint of this device
     PublicKeyFingerprint(String),
-    /// incoming connected
-    IncomingConnected(String, SocketAddr, Position),
+    /// new device connected
+    DeviceConnected {
+        addr: SocketAddr,
+        fingerprint: String,
+    },
+    /// incoming device entered the screen
+    DeviceEntered {
+        fingerprint: String,
+        addr: SocketAddr,
+        pos: Position,
+    },
     /// incoming disconnected
     IncomingDisconnected(SocketAddr),
+    /// failed connection attempt (approval for fingerprint required)
+    ConnectionAttempt { fingerprint: String },
 }
 
 #[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
@@ -229,8 +241,6 @@ pub enum FrontendRequest {
     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
@@ -241,6 +251,10 @@ pub enum FrontendRequest {
     AuthorizeKey(String, String),
     /// remove fingerprint (fingerprint)
     RemoveAuthorizedKey(String),
+    /// change the hook command
+    UpdateEnterHook(u64, Option<String>),
+    /// save config file
+    SaveConfiguration,
 }
 
 #[derive(Clone, Copy, PartialEq, Eq, Debug, Default, Serialize, Deserialize)]

lan-mouse-ipc/src/listen.rs

@@ -1,4 +1,4 @@
-use futures::{stream::SelectAll, Stream, StreamExt};
+use futures::{Stream, StreamExt, stream::SelectAll};
 #[cfg(unix)]
 use std::path::PathBuf;
 use std::{
@@ -45,7 +45,7 @@ impl AsyncFrontendListener {
         let (socket_path, listener) = {
             let socket_path = crate::default_socket_path()?;
 
-            log::debug!("remove socket: {:?}", 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
@@ -63,7 +63,7 @@ impl AsyncFrontendListener {
                 Ok(ls) => ls,
                 // some other lan-mouse instance has bound the socket in the meantime
                 Err(e) if e.kind() == ErrorKind::AddrInUse => {
-                    return Err(IpcListenerCreationError::AlreadyRunning)
+                    return Err(IpcListenerCreationError::AlreadyRunning);
                 }
                 Err(e) => return Err(IpcListenerCreationError::Bind(e)),
             };
@@ -75,7 +75,7 @@ impl AsyncFrontendListener {
             Ok(ls) => ls,
             // some other lan-mouse instance has bound the socket in the meantime
             Err(e) if e.kind() == ErrorKind::AddrInUse => {
-                return Err(IpcListenerCreationError::AlreadyRunning)
+                return Err(IpcListenerCreationError::AlreadyRunning);
             }
             Err(e) => return Err(IpcListenerCreationError::Bind(e)),
         };

nix/README.md

@@ -1,18 +1,18 @@
 # Nix Flake Usage
 
-## run
+## Run
 
 ```bash
 nix run github:feschber/lan-mouse
 
-# with params
+# With params
 nix run github:feschber/lan-mouse -- --help
 
 ```
 
-## home-manager module
+## Home-manager module
 
-add input
+Add input:
 
 ```nix
 inputs = {
@@ -20,14 +20,27 @@ inputs = {
 }
 ```
 
-enable lan-mouse
+Optional: add [our binary cache](https://app.cachix.org/cache/lan-mouse) to allow a faster package install.
+
+```nix
+nixConfig = {
+    extra-substituters = [
+        "https://lan-mouse.cachix.org/"
+    ];
+    extra-trusted-public-keys = [
+      "lan-mouse.cachix.org-1:KlE2AEZUgkzNKM7BIzMQo8w9yJYqUpor1CAUNRY6OyM="
+    ];
+};
+```
+
+Enable lan-mouse:
 
 ``` nix
 {
   inputs,
   ...
 }: {
-  # add the home manager module
+  # Add the Home Manager module
   imports = [inputs.lan-mouse.homeManagerModules.default];
 
   programs.lan-mouse = {

nix/hm-module.nix

@@ -52,7 +52,7 @@ in {
       };
       Service = {
         Type = "simple";
-        ExecStart = "${cfg.package}/bin/lan-mouse --daemon";
+        ExecStart = "${cfg.package}/bin/lan-mouse daemon";
       };
       Install.WantedBy = [
         (lib.mkIf config.wayland.windowManager.hyprland.systemd.enable "hyprland-session.target")
@@ -65,7 +65,7 @@ in {
       config = {
         ProgramArguments = [
           "${cfg.package}/bin/lan-mouse"
-          "--daemon"
+          "daemon"
         ];
         KeepAlive = true;
       };

scripts/copy-macos-dylib.sh

@@ -0,0 +1,93 @@
+#!/bin/sh
+set -eu
+
+homebrew_path=""
+exec_path="target/debug/bundle/osx/Lan Mouse.app/Contents/MacOS/lan-mouse"
+
+usage() {
+    cat <<EOF
+$0: Copy all Homebrew libraries into the macOS app bundle.
+USAGE: $0 [-h] [-b homebrew_path] [exec_path]
+
+OPTIONS:
+  -h, --help    Show this help message and exit
+  -b            Path to Homebrew installation (default: $homebrew_path)
+  exec_path     Path to the main executable in the app bundle
+                (default: get from `brew --prefix`)
+
+When macOS apps are linked to dynamic libraries (.dylib files),
+the fully qualified path to the library is embedded in the binary.
+If the libraries come from Homebrew, that means that Homebrew must be present
+and the libraries must be installed in the same location on the user's machine.
+
+This script copies all of the Homebrew libraries that an executable links to into the app bundle
+and tells all the binaries in the bundle to look for them there.
+EOF
+}
+
+# Gather command-line arguments
+while test $# -gt 0; do
+    case "$1" in
+        -h | --help ) usage; exit 0;;
+        -b | --homebrew ) homebrew_path="$1"; shift 2;;
+        * ) exec_path="$1"; shift;;
+    esac
+done
+
+if [ -z "$homebrew_path" ]; then
+    homebrew_path="$(brew --prefix)"
+fi
+
+# Path to the .app bundle
+bundle_path=$(dirname "$(dirname "$(dirname "$exec_path")")")
+# Path to the Frameworks directory
+fwks_path="$bundle_path/Contents/Frameworks"
+mkdir -p "$fwks_path"
+
+# Copy and fix references for a binary (executable or dylib)
+#
+# This function will:
+# - Copy any referenced dylibs from /opt/homebrew to the Frameworks directory
+# - Update the binary to reference the local copy instead
+# - Add the Frameworks directory to the binary's RPATH
+# - Recursively process the copied dylibs
+fix_references() {
+  local bin="$1"
+
+  # Get all Homebrew libraries referenced by the binary
+  libs=$(otool -L "$bin" | awk -v homebrew="$homebrew_path" '$0 ~ homebrew {print $1}')
+
+  echo "$libs" | while IFS= read -r old_path; do
+    local base_name="$(basename "$old_path")"
+    local dest="$fwks_path/$base_name"
+
+    if [ ! -e "$dest" ]; then
+      echo "Copying $old_path -> $dest"
+      cp -f "$old_path" "$dest"
+      # Ensure the copied dylib is writable so that xattr -rd /path/to/Lan\ Mouse.app works.
+      chmod 644 "$dest"
+
+      echo "Updating $dest to have install_name of @rpath/$base_name..."
+      install_name_tool -id "@rpath/$base_name" "$dest"
+
+      # Recursively process this dylib
+      fix_references "$dest"
+    fi
+
+    echo "Updating $bin to reference @rpath/$base_name..."
+    install_name_tool -change "$old_path" "@rpath/$base_name" "$bin"
+  done
+}
+
+fix_references "$exec_path"
+
+# Ensure the main executable has our Frameworks path in its RPATH
+if ! otool -l "$exec_path" | grep -q "@executable_path/../Frameworks"; then
+  echo "Adding RPATH to $exec_path"
+  install_name_tool -add_rpath "@executable_path/../Frameworks" "$exec_path"
+fi
+
+# Se-sign the .app
+codesign --force --deep --sign - "$bundle_path"
+
+echo "Done!"

scripts/makeicns.sh

@@ -0,0 +1,42 @@
+#!/bin/sh
+set -e
+
+usage() {
+    cat <<EOF
+$0: Make a macOS icns file from an SVG with ImageMagick and iconutil.
+usage: $0 [SVG [ICNS [ICONSET]]
+
+ARGUMENTS
+    SVG     The SVG file to convert
+            Defaults to ./lan-mouse-gtk/resources/de.feschber.LanMouse.svg
+    ICNS    The icns file to create
+            Defaults to ./target/icon.icns
+    ICONSET The iconset directory to create
+            Defaults to ./target/icon.iconset
+            This is just a temporary directory
+EOF
+}
+
+if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
+    usage
+    exit 0
+fi
+
+svg="${1:-./lan-mouse-gtk/resources/de.feschber.LanMouse.svg}"
+icns="${2:-./target/icon.icns}"
+iconset="${3:-./target/icon.iconset}"
+
+set -u
+
+mkdir -p "$iconset"
+magick convert -background none -resize 1024x1024 "$svg" "$iconset"/icon_512x512@2x.png
+magick convert -background none -resize 512x512 "$svg" "$iconset"/icon_512x512.png
+magick convert -background none -resize 256x256 "$svg" "$iconset"/icon_256x256.png
+magick convert -background none -resize 128x128 "$svg" "$iconset"/icon_128x128.png
+magick convert -background none -resize 64x64 "$svg" "$iconset"/icon_32x32@2x.png
+magick convert -background none -resize 32x32 "$svg" "$iconset"/icon_32x32.png
+magick convert -background none -resize 16x16 "$svg" "$iconset"/icon_16x16.png
+cp "$iconset"/icon_512x512.png "$iconset"/icon_256x256@2x.png
+cp "$iconset"/icon_256x256.png "$iconset"/icon_128x128@2x.png
+cp "$iconset"/icon_32x32.png "$iconset"/icon_16x16@2x.png
+iconutil -c icns "$iconset" -o "$icns"

service/lan-mouse.service

@@ -6,7 +6,7 @@ After=graphical-session.target
 BindsTo=graphical-session.target
 
 [Service]
-ExecStart=/usr/bin/lan-mouse --daemon
+ExecStart=/usr/bin/lan-mouse daemon
 Restart=on-failure
 
 [Install]

src/capture.rs

@@ -10,8 +10,8 @@ use input_capture::{
 };
 use input_event::scancode;
 use lan_mouse_proto::ProtoEvent;
-use local_channel::mpsc::{channel, Receiver, Sender};
-use tokio::task::{spawn_local, JoinHandle};
+use local_channel::mpsc::{Receiver, Sender, channel};
+use tokio::task::{JoinHandle, spawn_local};
 use tokio_util::sync::CancellationToken;
 
 use crate::connect::LanMouseConnection;
@@ -362,7 +362,13 @@ impl CaptureTask {
     }
 
     async fn release_capture(&mut self, capture: &mut InputCapture) -> Result<(), CaptureError> {
-        self.active_client.take();
+        // If we have an active client, notify them we're leaving
+        if let Some(handle) = self.active_client.take() {
+            log::info!("sending Leave event to client {handle}");
+            if let Err(e) = self.conn.send(ProtoEvent::Leave(0), handle).await {
+                log::warn!("failed to send Leave to client {handle}: {e}");
+            }
+        }
         capture.release().await
     }
 }

src/capture_test.rs

@@ -1,12 +1,16 @@
 use crate::config::Config;
+use clap::Args;
 use futures::StreamExt;
 use input_capture::{self, CaptureError, CaptureEvent, InputCapture, InputCaptureError, Position};
 use input_event::{Event, KeyboardEvent};
 
-pub async fn run(config: Config) -> Result<(), InputCaptureError> {
+#[derive(Args, Clone, Debug, Eq, PartialEq)]
+pub struct TestCaptureArgs {}
+
+pub async fn run(config: Config, _args: TestCaptureArgs) -> Result<(), InputCaptureError> {
     log::info!("running input capture test");
     log::info!("creating input capture");
-    let backend = config.capture_backend.map(|b| b.into());
+    let backend = config.capture_backend().map(|b| b.into());
     loop {
         let mut input_capture = InputCapture::new(backend).await?;
         log::info!("creating clients");

src/client.rs

@@ -15,6 +15,15 @@ pub struct ClientManager {
 }
 
 impl ClientManager {
+    /// get all clients
+    pub fn clients(&self) -> Vec<(ClientConfig, ClientState)> {
+        self.clients
+            .borrow()
+            .iter()
+            .map(|(_, c)| c.clone())
+            .collect::<Vec<_>>()
+    }
+
     /// add a new client to this manager
     pub fn add_client(&self) -> ClientHandle {
         self.clients.borrow_mut().insert(Default::default()) as ClientHandle
@@ -199,6 +208,13 @@ impl ClientManager {
         }
     }
 
+    /// update the enter hook command of the client
+    pub(crate) fn set_enter_hook(&self, handle: ClientHandle, enter_hook: Option<String>) {
+        if let Some((c, _s)) = self.clients.borrow_mut().get_mut(handle as usize) {
+            c.cmd = enter_hook;
+        }
+    }
+
     /// set resolving status of the client
     pub(crate) fn set_resolving(&self, handle: ClientHandle, status: bool) {
         if let Some((_, s)) = self.clients.borrow_mut().get_mut(handle as usize) {

src/config.rs

@@ -1,81 +1,90 @@
-use clap::{Parser, ValueEnum};
+use crate::capture_test::TestCaptureArgs;
+use crate::emulation_test::TestEmulationArgs;
+use clap::{Parser, Subcommand, ValueEnum};
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::env::{self, VarError};
 use std::fmt::Display;
-use std::fs;
+use std::fs::{self, File};
+use std::io::Write;
 use std::net::IpAddr;
 use std::path::{Path, PathBuf};
 use std::{collections::HashSet, io};
 use thiserror::Error;
 use toml;
+use toml_edit::{self, DocumentMut};
 
-use lan_mouse_ipc::{Position, DEFAULT_PORT};
+use lan_mouse_cli::CliArgs;
+use lan_mouse_ipc::{DEFAULT_PORT, Position};
 
 use input_event::scancode::{
     self,
     Linux::{KeyLeftAlt, KeyLeftCtrl, KeyLeftMeta, KeyLeftShift},
 };
 
-#[derive(Serialize, Deserialize, Debug)]
-pub struct ConfigToml {
-    pub capture_backend: Option<CaptureBackend>,
-    pub emulation_backend: Option<EmulationBackend>,
-    pub port: Option<u16>,
-    pub frontend: Option<Frontend>,
-    pub release_bind: Option<Vec<scancode::Linux>>,
-    pub cert_path: Option<PathBuf>,
-    pub left: Option<TomlClient>,
-    pub right: Option<TomlClient>,
-    pub top: Option<TomlClient>,
-    pub bottom: Option<TomlClient>,
-    pub authorized_fingerprints: Option<HashMap<String, String>>,
+use shadow_rs::shadow;
+
+shadow!(build);
+
+const CONFIG_FILE_NAME: &str = "config.toml";
+const CERT_FILE_NAME: &str = "lan-mouse.pem";
+
+fn default_path() -> Result<PathBuf, VarError> {
+    #[cfg(unix)]
+    let default_path = {
+        let xdg_config_home =
+            env::var("XDG_CONFIG_HOME").unwrap_or(format!("{}/.config", env::var("HOME")?));
+        format!("{xdg_config_home}/lan-mouse/")
+    };
+
+    #[cfg(not(unix))]
+    let default_path = {
+        let app_data =
+            env::var("LOCALAPPDATA").unwrap_or(format!("{}/.config", env::var("USERPROFILE")?));
+        format!("{app_data}\\lan-mouse\\")
+    };
+    Ok(PathBuf::from(default_path))
 }
 
-#[derive(Serialize, Deserialize, Debug, Eq, PartialEq)]
-pub struct TomlClient {
-    pub capture_backend: Option<CaptureBackend>,
-    pub hostname: Option<String>,
-    pub host_name: Option<String>,
-    pub ips: Option<Vec<IpAddr>>,
-    pub port: Option<u16>,
-    pub activate_on_startup: Option<bool>,
-    pub enter_hook: Option<String>,
+#[derive(Serialize, Deserialize, Clone, Debug, Default)]
+struct ConfigToml {
+    capture_backend: Option<CaptureBackend>,
+    emulation_backend: Option<EmulationBackend>,
+    port: Option<u16>,
+    release_bind: Option<Vec<scancode::Linux>>,
+    cert_path: Option<PathBuf>,
+    clients: Option<Vec<TomlClient>>,
+    authorized_fingerprints: Option<HashMap<String, String>>,
+}
+
+#[derive(Clone, Serialize, Deserialize, Debug, Eq, PartialEq)]
+struct TomlClient {
+    hostname: Option<String>,
+    host_name: Option<String>,
+    ips: Option<Vec<IpAddr>>,
+    port: Option<u16>,
+    position: Option<Position>,
+    activate_on_startup: Option<bool>,
+    enter_hook: Option<String>,
 }
 
 impl ConfigToml {
-    pub fn new(path: &Path) -> Result<ConfigToml, ConfigError> {
+    fn new(path: &Path) -> Result<ConfigToml, ConfigError> {
         let config = fs::read_to_string(path)?;
         Ok(toml::from_str::<_>(&config)?)
     }
 }
 
 #[derive(Parser, Debug)]
-#[command(author, version=env!("GIT_DESCRIBE"), about, long_about = None)]
-struct CliArgs {
+#[command(author, version=build::CLAP_LONG_VERSION, about, long_about = None)]
+struct Args {
     /// the listen port for lan-mouse
     #[arg(short, long)]
     port: Option<u16>,
 
-    /// the frontend to use [cli | gtk]
-    #[arg(short, long)]
-    frontend: Option<Frontend>,
-
     /// non-default config file location
     #[arg(short, long)]
-    config: Option<String>,
-
-    /// run only the service as a daemon without the frontend
-    #[arg(short, long)]
-    daemon: bool,
-
-    /// test input capture
-    #[arg(long)]
-    test_capture: bool,
-
-    /// test input emulation
-    #[arg(long)]
-    test_emulation: bool,
+    config: Option<PathBuf>,
 
     /// capture backend override
     #[arg(long)]
@@ -88,6 +97,22 @@ struct CliArgs {
     /// path to non-default certificate location
     #[arg(long)]
     cert_path: Option<PathBuf>,
+
+    /// subcommands
+    #[command(subcommand)]
+    command: Option<Command>,
+}
+
+#[derive(Subcommand, Clone, Debug, Eq, PartialEq)]
+pub enum Command {
+    /// test input emulation
+    TestEmulation(TestEmulationArgs),
+    /// test input capture
+    TestCapture(TestCaptureArgs),
+    /// Lan Mouse commandline interface
+    Cli(CliArgs),
+    /// run in daemon mode
+    Daemon,
 }
 
 #[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize, ValueEnum)]
@@ -211,50 +236,16 @@ impl Display for EmulationBackend {
     }
 }
 
-#[derive(Clone, Copy, Debug, Deserialize, PartialEq, Eq, Serialize, ValueEnum)]
-pub enum Frontend {
-    #[serde(rename = "gtk")]
-    Gtk,
-    #[serde(rename = "cli")]
-    Cli,
-}
-
-impl Default for Frontend {
-    fn default() -> Self {
-        if cfg!(feature = "gtk") {
-            Self::Gtk
-        } else {
-            Self::Cli
-        }
-    }
-}
-
 #[derive(Debug)]
 pub struct Config {
-    /// the path to the configuration file used
-    pub path: PathBuf,
-    /// public key fingerprints authorized for connection
-    pub authorized_fingerprints: HashMap<String, String>,
-    /// optional input-capture backend override
-    pub capture_backend: Option<CaptureBackend>,
-    /// optional input-emulation backend override
-    pub emulation_backend: Option<EmulationBackend>,
-    /// the frontend to use
-    pub frontend: Frontend,
-    /// the port to use (initially)
-    pub port: u16,
-    /// list of clients
-    pub clients: Vec<(TomlClient, Position)>,
-    /// whether or not to run as a daemon
-    pub daemon: bool,
-    /// configured release bind
-    pub release_bind: Vec<scancode::Linux>,
-    /// test capture instead of running the app
-    pub test_capture: bool,
-    /// test emulation instead of running the app
-    pub test_emulation: bool,
-    /// path to the tls certificate to use
-    pub cert_path: PathBuf,
+    /// command line arguments
+    args: Args,
+    /// path to the certificate file used
+    cert_path: PathBuf,
+    /// path to the config file used
+    config_path: PathBuf,
+    /// the (optional) toml config and it's path
+    config_toml: Option<ConfigToml>,
 }
 
 pub struct ConfigClient {
@@ -266,6 +257,52 @@ pub struct ConfigClient {
     pub enter_hook: Option<String>,
 }
 
+impl From<TomlClient> for ConfigClient {
+    fn from(toml: TomlClient) -> Self {
+        let active = toml.activate_on_startup.unwrap_or(false);
+        let enter_hook = toml.enter_hook;
+        let hostname = toml.hostname;
+        let ips = HashSet::from_iter(toml.ips.into_iter().flatten());
+        let port = toml.port.unwrap_or(DEFAULT_PORT);
+        let pos = toml.position.unwrap_or_default();
+        Self {
+            ips,
+            hostname,
+            port,
+            pos,
+            active,
+            enter_hook,
+        }
+    }
+}
+
+impl From<ConfigClient> for TomlClient {
+    fn from(client: ConfigClient) -> Self {
+        let hostname = client.hostname;
+        let host_name = None;
+        let mut ips = client.ips.into_iter().collect::<Vec<_>>();
+        ips.sort();
+        let ips = Some(ips);
+        let port = if client.port == DEFAULT_PORT {
+            None
+        } else {
+            Some(client.port)
+        };
+        let position = Some(client.pos);
+        let activate_on_startup = if client.active { Some(true) } else { None };
+        let enter_hook = client.enter_hook;
+        Self {
+            hostname,
+            host_name,
+            ips,
+            port,
+            position,
+            activate_on_startup,
+            enter_hook,
+        }
+    }
+}
+
 #[derive(Debug, Error)]
 pub enum ConfigError {
     #[error(transparent)]
@@ -281,134 +318,161 @@ const DEFAULT_RELEASE_KEYS: [scancode::Linux; 4] =
 
 impl Config {
     pub fn new() -> Result<Self, ConfigError> {
-        let args = CliArgs::parse();
-        const CONFIG_FILE_NAME: &str = "config.toml";
-        const CERT_FILE_NAME: &str = "lan-mouse.pem";
-
-        #[cfg(unix)]
-        let config_path = {
-            let xdg_config_home =
-                env::var("XDG_CONFIG_HOME").unwrap_or(format!("{}/.config", env::var("HOME")?));
-            format!("{xdg_config_home}/lan-mouse/")
-        };
-
-        #[cfg(not(unix))]
-        let config_path = {
-            let app_data =
-                env::var("LOCALAPPDATA").unwrap_or(format!("{}/.config", env::var("USERPROFILE")?));
-            format!("{app_data}\\lan-mouse\\")
-        };
-
-        let config_path = PathBuf::from(config_path);
-        let config_file = config_path.join(CONFIG_FILE_NAME);
+        let args = Args::parse();
 
         // --config <file> overrules default location
-        let config_file = args.config.map(PathBuf::from).unwrap_or(config_file);
+        let config_path = args
+            .config
+            .clone()
+            .unwrap_or(default_path()?.join(CONFIG_FILE_NAME));
 
-        let mut config_toml = match ConfigToml::new(&config_file) {
+        let config_toml = match ConfigToml::new(&config_path) {
             Err(e) => {
-                log::warn!("{config_file:?}: {e}");
+                log::warn!("{config_path:?}: {e}");
                 log::warn!("Continuing without config file ...");
                 None
             }
             Ok(c) => Some(c),
         };
 
-        let frontend_arg = args.frontend;
-        let frontend_cfg = config_toml.as_ref().and_then(|c| c.frontend);
-        let frontend = frontend_arg.or(frontend_cfg).unwrap_or_default();
-
-        let port = args
-            .port
-            .or(config_toml.as_ref().and_then(|c| c.port))
-            .unwrap_or(DEFAULT_PORT);
-
-        log::debug!("{config_toml:?}");
-        let release_bind = config_toml
-            .as_ref()
-            .and_then(|c| c.release_bind.clone())
-            .unwrap_or(Vec::from_iter(DEFAULT_RELEASE_KEYS.iter().cloned()));
-
-        let capture_backend = args
-            .capture_backend
-            .or(config_toml.as_ref().and_then(|c| c.capture_backend));
-
-        let emulation_backend = args
-            .emulation_backend
-            .or(config_toml.as_ref().and_then(|c| c.emulation_backend));
-
+        // --cert-path <file> overrules default location
         let cert_path = args
             .cert_path
+            .clone()
             .or(config_toml.as_ref().and_then(|c| c.cert_path.clone()))
-            .unwrap_or(config_path.join(CERT_FILE_NAME));
-
-        let authorized_fingerprints = config_toml
-            .as_mut()
-            .and_then(|c| std::mem::take(&mut c.authorized_fingerprints))
-            .unwrap_or_default();
-
-        let mut clients: Vec<(TomlClient, Position)> = vec![];
-
-        if let Some(config_toml) = config_toml {
-            if let Some(c) = config_toml.right {
-                clients.push((c, Position::Right))
-            }
-            if let Some(c) = config_toml.left {
-                clients.push((c, Position::Left))
-            }
-            if let Some(c) = config_toml.top {
-                clients.push((c, Position::Top))
-            }
-            if let Some(c) = config_toml.bottom {
-                clients.push((c, Position::Bottom))
-            }
-        }
-
-        let daemon = args.daemon;
-        let test_capture = args.test_capture;
-        let test_emulation = args.test_emulation;
+            .unwrap_or(default_path()?.join(CERT_FILE_NAME));
 
         Ok(Config {
-            path: config_path,
-            authorized_fingerprints,
-            capture_backend,
-            emulation_backend,
-            daemon,
-            frontend,
-            clients,
-            port,
-            release_bind,
-            test_capture,
-            test_emulation,
+            args,
             cert_path,
+            config_path,
+            config_toml,
         })
     }
 
-    pub fn get_clients(&self) -> Vec<ConfigClient> {
-        self.clients
-            .iter()
-            .map(|(c, pos)| {
-                let port = c.port.unwrap_or(DEFAULT_PORT);
-                let ips: HashSet<IpAddr> = if let Some(ips) = c.ips.as_ref() {
-                    HashSet::from_iter(ips.iter().cloned())
-                } else {
-                    HashSet::new()
-                };
-                let hostname = match &c.hostname {
-                    Some(h) => Some(h.clone()),
-                    None => c.host_name.clone(),
-                };
-                let active = c.activate_on_startup.unwrap_or(false);
-                let enter_hook = c.enter_hook.clone();
-                ConfigClient {
-                    ips,
-                    hostname,
-                    port,
-                    pos: *pos,
-                    active,
-                    enter_hook,
-                }
-            })
+    /// the command to run
+    pub fn command(&self) -> Option<Command> {
+        self.args.command.clone()
+    }
+
+    pub fn config_path(&self) -> &Path {
+        &self.config_path
+    }
+
+    /// public key fingerprints authorized for connection
+    pub fn authorized_fingerprints(&self) -> HashMap<String, String> {
+        self.config_toml
+            .as_ref()
+            .and_then(|c| c.authorized_fingerprints.clone())
+            .unwrap_or_default()
+    }
+
+    /// path to certificate
+    pub fn cert_path(&self) -> &Path {
+        &self.cert_path
+    }
+
+    /// optional input-capture backend override
+    pub fn capture_backend(&self) -> Option<CaptureBackend> {
+        self.args
+            .capture_backend
+            .or(self.config_toml.as_ref().and_then(|c| c.capture_backend))
+    }
+
+    /// optional input-emulation backend override
+    pub fn emulation_backend(&self) -> Option<EmulationBackend> {
+        self.args
+            .emulation_backend
+            .or(self.config_toml.as_ref().and_then(|c| c.emulation_backend))
+    }
+
+    /// the port to use (initially)
+    pub fn port(&self) -> u16 {
+        self.args
+            .port
+            .or(self.config_toml.as_ref().and_then(|c| c.port))
+            .unwrap_or(DEFAULT_PORT)
+    }
+
+    /// list of configured clients
+    pub fn clients(&self) -> Vec<ConfigClient> {
+        self.config_toml
+            .as_ref()
+            .map(|c| c.clients.clone())
+            .unwrap_or_default()
+            .into_iter()
+            .flatten()
+            .map(From::<TomlClient>::from)
             .collect()
     }
+
+    /// release bind for returning control to the host
+    pub fn release_bind(&self) -> Vec<scancode::Linux> {
+        self.config_toml
+            .as_ref()
+            .and_then(|c| c.release_bind.clone())
+            .unwrap_or(Vec::from_iter(DEFAULT_RELEASE_KEYS.iter().cloned()))
+    }
+
+    /// set configured clients
+    pub fn set_clients(&mut self, clients: Vec<ConfigClient>) {
+        if clients.is_empty() {
+            return;
+        }
+        if self.config_toml.is_none() {
+            self.config_toml = Some(Default::default());
+        }
+        self.config_toml.as_mut().expect("config").clients =
+            Some(clients.into_iter().map(|c| c.into()).collect::<Vec<_>>());
+    }
+
+    /// set authorized keys
+    pub fn set_authorized_keys(&mut self, fingerprints: HashMap<String, String>) {
+        if fingerprints.is_empty() {
+            return;
+        }
+        if self.config_toml.is_none() {
+            self.config_toml = Default::default();
+        }
+        self.config_toml
+            .as_mut()
+            .expect("config")
+            .authorized_fingerprints = Some(fingerprints);
+    }
+
+    pub fn write_back(&self) -> Result<(), io::Error> {
+        log::info!("writing config to {:?}", &self.config_path);
+        /* load the current configuration file */
+        let current_config = match fs::read_to_string(&self.config_path) {
+            Ok(c) => c.parse::<DocumentMut>().unwrap_or_default(),
+            Err(e) => {
+                log::info!("{:?} {e} => creating new config", self.config_path());
+                Default::default()
+            }
+        };
+        let _current_config =
+            toml_edit::de::from_document::<ConfigToml>(current_config).unwrap_or_default();
+
+        /* the new config */
+        let new_config = self.config_toml.clone().unwrap_or_default();
+        // let new_config = toml_edit::ser::to_document::<ConfigToml>(&new_config).expect("fixme");
+        let new_config = toml_edit::ser::to_string_pretty(&new_config).expect("config");
+
+        /*
+         * TODO merge documents => eventually we might want to split this up into clients configured
+         * via the config file and clients managed through the GUI / frontend.
+         * The latter should be saved to $XDG_DATA_HOME instead of $XDG_CONFIG_HOME,
+         * and clients configured through .config could be made permanent.
+         * For now we just override the config file.
+         */
+
+        /* write new config to file */
+        if let Some(p) = self.config_path().parent() {
+            fs::create_dir_all(p)?;
+        }
+        let mut f = File::create(self.config_path())?;
+        f.write_all(new_config.as_bytes())?;
+
+        Ok(())
+    }
 }

src/connect.rs

@@ -1,7 +1,7 @@
 use crate::client::ClientManager;
 use lan_mouse_ipc::{ClientHandle, DEFAULT_PORT};
-use lan_mouse_proto::{ProtoEvent, MAX_EVENT_SIZE};
-use local_channel::mpsc::{channel, Receiver, Sender};
+use lan_mouse_proto::{MAX_EVENT_SIZE, ProtoEvent};
+use local_channel::mpsc::{Receiver, Sender, channel};
 use std::{
     cell::RefCell,
     collections::{HashMap, HashSet},
@@ -15,7 +15,7 @@ use thiserror::Error;
 use tokio::{
     net::UdpSocket,
     sync::Mutex,
-    task::{spawn_local, JoinSet},
+    task::{JoinSet, spawn_local},
 };
 use webrtc_dtls::{
     config::{Config, ExtendedMasterSecretType},
@@ -223,14 +223,18 @@ async fn ping_pong(
 ) {
     loop {
         let (buf, len) = ProtoEvent::Ping.into();
-        if let Err(e) = conn.send(&buf[..len]).await {
-            log::warn!("{addr}: send error `{e}`, closing connection");
-            let _ = conn.close().await;
-            break;
-        }
-        log::trace!("PING >->->->->- {addr}");
 
-        tokio::time::sleep(Duration::from_millis(500)).await;
+        // send 4 pings, at least one must be answered
+        for _ in 0..4 {
+            if let Err(e) = conn.send(&buf[..len]).await {
+                log::warn!("{addr}: send error `{e}`, closing connection");
+                let _ = conn.close().await;
+                break;
+            }
+            log::trace!("PING >->->->->- {addr}");
+
+            tokio::time::sleep(Duration::from_millis(500)).await;
+        }
 
         if !ping_response.borrow_mut().remove(&addr) {
             log::warn!("{addr} did not respond, closing connection");

src/dns.rs

@@ -1,9 +1,9 @@
-use std::net::IpAddr;
+use std::{collections::HashMap, net::IpAddr};
 
-use local_channel::mpsc::{channel, Receiver, Sender};
-use tokio::task::{spawn_local, JoinHandle};
+use local_channel::mpsc::{Receiver, Sender, channel};
+use tokio::task::{JoinHandle, spawn_local};
 
-use hickory_resolver::{error::ResolveError, TokioAsyncResolver};
+use hickory_resolver::{ResolveError, TokioResolver};
 use tokio_util::sync::CancellationToken;
 
 use lan_mouse_ipc::ClientHandle;
@@ -26,19 +26,21 @@ pub(crate) enum DnsEvent {
 }
 
 struct DnsTask {
-    resolver: TokioAsyncResolver,
+    resolver: TokioResolver,
     request_rx: Receiver<DnsRequest>,
     event_tx: Sender<DnsEvent>,
     cancellation_token: CancellationToken,
+    active_tasks: HashMap<ClientHandle, JoinHandle<()>>,
 }
 
 impl DnsResolver {
     pub(crate) fn new() -> Result<Self, ResolveError> {
-        let resolver = TokioAsyncResolver::tokio_from_system_conf()?;
+        let resolver = TokioResolver::builder_tokio()?.build();
         let (request_tx, request_rx) = channel();
         let (event_tx, event_rx) = channel();
         let cancellation_token = CancellationToken::new();
         let dns_task = DnsTask {
+            active_tasks: Default::default(),
             resolver,
             request_rx,
             event_tx,
@@ -81,6 +83,14 @@ impl DnsTask {
         while let Some(dns_request) = self.request_rx.recv().await {
             let DnsRequest { handle, hostname } = dns_request;
 
+            /* abort previous dns task */
+            let previous_task = self.active_tasks.remove(&handle);
+            if let Some(task) = previous_task {
+                if !task.is_finished() {
+                    task.abort();
+                }
+            }
+
             self.event_tx
                 .send(DnsEvent::Resolving(handle))
                 .expect("channel closed");
@@ -90,7 +100,7 @@ impl DnsTask {
             let resolver = self.resolver.clone();
             let cancellation_token = self.cancellation_token.clone();
 
-            tokio::task::spawn_local(async move {
+            let task = tokio::task::spawn_local(async move {
                 tokio::select! {
                     ips = resolver.lookup_ip(&hostname) => {
                        let ips = ips.map(|ips| ips.iter().collect::<Vec<_>>());
@@ -101,6 +111,7 @@ impl DnsTask {
                     _ = cancellation_token.cancelled() => {},
                 }
             });
+            self.active_tasks.insert(handle, task);
         }
     }
 }

src/emulation.rs

@@ -1,9 +1,9 @@
-use crate::listen::{LanMouseListener, ListenerCreationError};
+use crate::listen::{LanMouseListener, ListenEvent, ListenerCreationError};
 use futures::StreamExt;
 use input_emulation::{EmulationHandle, InputEmulation, InputEmulationError};
 use input_event::Event;
 use lan_mouse_proto::{Position, ProtoEvent};
-use local_channel::mpsc::{channel, Receiver, Sender};
+use local_channel::mpsc::{Receiver, Sender, channel};
 use std::{
     cell::Cell,
     collections::HashMap,
@@ -13,7 +13,7 @@ use std::{
 };
 use tokio::{
     select,
-    task::{spawn_local, JoinHandle},
+    task::{JoinHandle, spawn_local},
 };
 
 /// emulation handling events received from a listener
@@ -24,8 +24,15 @@ pub(crate) struct Emulation {
 }
 
 pub(crate) enum EmulationEvent {
-    /// new connection
     Connected {
+        addr: SocketAddr,
+        fingerprint: String,
+    },
+    ConnectionAttempt {
+        fingerprint: String,
+    },
+    /// new connection
+    Entered {
         /// address of the connection
         addr: SocketAddr,
         /// position of the connection
@@ -34,7 +41,9 @@ pub(crate) enum EmulationEvent {
         fingerprint: String,
     },
     /// connection closed
-    Disconnected { addr: SocketAddr },
+    Disconnected {
+        addr: SocketAddr,
+    },
     /// the port of the listener has changed
     PortChanged(Result<u16, ListenerCreationError>),
     /// emulation was disabled
@@ -119,33 +128,42 @@ impl ListenTask {
     async fn run(mut self) {
         let mut interval = tokio::time::interval(Duration::from_secs(5));
         let mut last_response = HashMap::new();
+        let mut rejected_connections = HashMap::new();
         loop {
             select! {
-                e = self.listener.next() =>  {
-                    let (event, addr) = match e {
-                        Some(e) => e,
-                        None => break,
-                    };
-                    log::trace!("{event} <-<-<-<-<- {addr}");
-                    last_response.insert(addr, Instant::now());
-                    match event {
-                        ProtoEvent::Enter(pos) => {
-                            if let Some(fingerprint) = self.listener.get_certificate_fingerprint(addr).await {
-                                log::info!("releasing capture: {addr} entered this device");
-                                self.event_tx.send(EmulationEvent::ReleaseNotify).expect("channel closed");
-                                self.listener.reply(addr, ProtoEvent::Ack(0)).await;
-                                self.event_tx.send(EmulationEvent::Connected{addr, pos: to_ipc_pos(pos), fingerprint}).expect("channel closed");
+                e = self.listener.next() => {match e {
+                    Some(ListenEvent::Msg { event, addr }) => {
+                        log::trace!("{event} <-<-<-<-<- {addr}");
+                        last_response.insert(addr, Instant::now());
+                        match event {
+                            ProtoEvent::Enter(pos) => {
+                                if let Some(fingerprint) = self.listener.get_certificate_fingerprint(addr).await {
+                                    log::info!("releasing capture: {addr} entered this device");
+                                    self.event_tx.send(EmulationEvent::ReleaseNotify).expect("channel closed");
+                                    self.listener.reply(addr, ProtoEvent::Ack(0)).await;
+                                    self.event_tx.send(EmulationEvent::Entered{addr, pos: to_ipc_pos(pos), fingerprint}).expect("channel closed");
+                                }
                             }
+                            ProtoEvent::Leave(_) => {
+                                self.emulation_proxy.remove(addr);
+                                self.listener.reply(addr, ProtoEvent::Ack(0)).await;
+                            }
+                            ProtoEvent::Input(event) => self.emulation_proxy.consume(event, addr),
+                            ProtoEvent::Ping => self.listener.reply(addr, ProtoEvent::Pong(self.emulation_proxy.emulation_active.get())).await,
+                            _ => {}
                         }
-                        ProtoEvent::Leave(_) => {
-                            self.emulation_proxy.remove(addr);
-                            self.listener.reply(addr, ProtoEvent::Ack(0)).await;
-                        }
-                        ProtoEvent::Input(event) => self.emulation_proxy.consume(event, addr),
-                        ProtoEvent::Ping => self.listener.reply(addr, ProtoEvent::Pong(self.emulation_proxy.emulation_active.get())).await,
-                        _ => {}
                     }
-                }
+                    Some(ListenEvent::Accept { addr, fingerprint }) => {
+                        self.event_tx.send(EmulationEvent::Connected { addr, fingerprint }).expect("channel closed");
+                    }
+                    Some(ListenEvent::Rejected { fingerprint }) => {
+                        if rejected_connections.insert(fingerprint.clone(), Instant::now())
+                            .is_none_or(|i| i.elapsed() >= Duration::from_secs(2)) {
+                                self.event_tx.send(EmulationEvent::ConnectionAttempt { fingerprint }).expect("channel closed");
+                            }
+                    }
+                    None => break
+                }}
                 event = self.emulation_proxy.event() => {
                     self.event_tx.send(event).expect("channel closed");
                 }

src/emulation_test.rs

@@ -1,4 +1,5 @@
 use crate::config::Config;
+use clap::Args;
 use input_emulation::{InputEmulation, InputEmulationError};
 use input_event::{Event, PointerEvent};
 use std::f64::consts::PI;
@@ -7,10 +8,20 @@ use std::time::{Duration, Instant};
 const FREQUENCY_HZ: f64 = 1.0;
 const RADIUS: f64 = 100.0;
 
-pub async fn run(config: Config) -> Result<(), InputEmulationError> {
+#[derive(Args, Clone, Debug, Eq, PartialEq)]
+pub struct TestEmulationArgs {
+    #[arg(long)]
+    mouse: bool,
+    #[arg(long)]
+    keyboard: bool,
+    #[arg(long)]
+    scroll: bool,
+}
+
+pub async fn run(config: Config, _args: TestEmulationArgs) -> Result<(), InputEmulationError> {
     log::info!("running input emulation test");
 
-    let backend = config.emulation_backend.map(|b| b.into());
+    let backend = config.emulation_backend().map(|b| b.into());
     let mut emulation = InputEmulation::new(backend).await?;
     emulation.create(0).await;
 

src/listen.rs

@@ -1,18 +1,18 @@
 use futures::{Stream, StreamExt};
-use lan_mouse_proto::{ProtoEvent, MAX_EVENT_SIZE};
-use local_channel::mpsc::{channel, Receiver, Sender};
+use lan_mouse_proto::{MAX_EVENT_SIZE, ProtoEvent};
+use local_channel::mpsc::{Receiver, Sender, channel};
 use rustls::pki_types::CertificateDer;
 use std::{
-    collections::HashMap,
+    collections::{HashMap, VecDeque},
     net::SocketAddr,
     rc::Rc,
-    sync::{Arc, RwLock},
+    sync::{Arc, Mutex, RwLock},
     time::Duration,
 };
 use thiserror::Error;
 use tokio::{
-    sync::Mutex,
-    task::{spawn_local, JoinHandle},
+    sync::Mutex as AsyncMutex,
+    task::{JoinHandle, spawn_local},
 };
 use webrtc_dtls::{
     config::{ClientAuthType::RequireAnyClientCert, Config, ExtendedMasterSecretType},
@@ -20,7 +20,7 @@ use webrtc_dtls::{
     crypto::Certificate,
     listener::listen,
 };
-use webrtc_util::{conn::Listener, Conn, Error};
+use webrtc_util::{Conn, Error, conn::Listener};
 
 use crate::crypto;
 
@@ -34,11 +34,25 @@ pub enum ListenerCreationError {
 
 type ArcConn = Arc<dyn Conn + Send + Sync>;
 
+pub(crate) enum ListenEvent {
+    Msg {
+        event: ProtoEvent,
+        addr: SocketAddr,
+    },
+    Accept {
+        addr: SocketAddr,
+        fingerprint: String,
+    },
+    Rejected {
+        fingerprint: String,
+    },
+}
+
 pub(crate) struct LanMouseListener {
-    listen_rx: Receiver<(ProtoEvent, SocketAddr)>,
-    listen_tx: Sender<(ProtoEvent, SocketAddr)>,
+    listen_rx: Receiver<ListenEvent>,
+    listen_tx: Sender<ListenEvent>,
     listen_task: JoinHandle<()>,
-    conns: Rc<Mutex<Vec<(SocketAddr, ArcConn)>>>,
+    conns: Rc<AsyncMutex<Vec<(SocketAddr, ArcConn)>>>,
     request_port_change: Sender<u16>,
     port_changed: Receiver<Result<u16, ListenerCreationError>>,
 }
@@ -58,26 +72,35 @@ impl LanMouseListener {
         let (listen_tx, listen_rx) = channel();
         let (request_port_change, mut request_port_change_rx) = channel();
         let (port_changed_tx, port_changed) = channel();
+        let connection_attempts: Arc<Mutex<VecDeque<String>>> = Default::default();
 
         let authorized = authorized_keys.clone();
-        let verify_peer_certificate: Option<VerifyPeerCertificateFn> = Some(Arc::new(
-            move |certs: &[Vec<u8>], _chains: &[CertificateDer<'static>]| {
-                assert!(certs.len() == 1);
-                let fingerprints = certs
-                    .iter()
-                    .map(|c| crypto::generate_fingerprint(c))
-                    .collect::<Vec<_>>();
-                if authorized
-                    .read()
-                    .expect("lock")
-                    .contains_key(&fingerprints[0])
-                {
-                    Ok(())
-                } else {
-                    Err(webrtc_dtls::Error::ErrVerifyDataMismatch)
-                }
-            },
-        ));
+        let verify_peer_certificate: Option<VerifyPeerCertificateFn> = {
+            let connection_attempts = connection_attempts.clone();
+            Some(Arc::new(
+                move |certs: &[Vec<u8>], _chains: &[CertificateDer<'static>]| {
+                    assert!(certs.len() == 1);
+                    let fingerprints = certs
+                        .iter()
+                        .map(|c| crypto::generate_fingerprint(c))
+                        .collect::<Vec<_>>();
+                    if authorized
+                        .read()
+                        .expect("lock")
+                        .contains_key(&fingerprints[0])
+                    {
+                        Ok(())
+                    } else {
+                        let fingerprint = fingerprints.into_iter().next().expect("fingerprint");
+                        connection_attempts
+                            .lock()
+                            .expect("lock")
+                            .push_back(fingerprint);
+                        Err(webrtc_dtls::Error::ErrVerifyDataMismatch)
+                    }
+                },
+            ))
+        };
         let cfg = Config {
             certificates: vec![cert.clone()],
             extended_master_secret: ExtendedMasterSecretType::Require,
@@ -89,43 +112,69 @@ impl LanMouseListener {
         let listen_addr = SocketAddr::new("0.0.0.0".parse().expect("invalid ip"), port);
         let mut listener = listen(listen_addr, cfg.clone()).await?;
 
-        let conns: Rc<Mutex<Vec<(SocketAddr, ArcConn)>>> = Rc::new(Mutex::new(Vec::new()));
+        let conns: Rc<AsyncMutex<Vec<(SocketAddr, ArcConn)>>> =
+            Rc::new(AsyncMutex::new(Vec::new()));
 
         let conns_clone = conns.clone();
-        let tx = listen_tx.clone();
-        let listen_task: JoinHandle<()> = spawn_local(async move {
-            loop {
-                let sleep = tokio::time::sleep(Duration::from_secs(2));
-                tokio::select! {
-                    /* workaround for https://github.com/webrtc-rs/webrtc/issues/614 */
-                    _ = sleep => continue,
-                    c = listener.accept() => match c {
-                        Ok((conn, addr)) => {
-                            log::info!("dtls client connected, ip: {addr}");
-                            let mut conns = conns_clone.lock().await;
-                            conns.push((addr, conn.clone()));
-                            spawn_local(read_loop(conns_clone.clone(), addr, conn, tx.clone()));
-                        },
-                        Err(e) => log::warn!("accept: {e}"),
-                    },
-                    port = request_port_change_rx.recv() => {
-                        let port = port.expect("channel closed");
-                        let listen_addr = SocketAddr::new("0.0.0.0".parse().expect("invalid ip"), port);
-                        match listen(listen_addr, cfg.clone()).await {
-                            Ok(new_listener) => {
-                                let _ = listener.close().await;
-                                listener = new_listener;
-                                port_changed_tx.send(Ok(port)).expect("channel closed");
-                            }
+        let listen_task: JoinHandle<()> = {
+            let listen_tx = listen_tx.clone();
+            let connection_attempts = connection_attempts.clone();
+            spawn_local(async move {
+                loop {
+                    let sleep = tokio::time::sleep(Duration::from_secs(2));
+                    tokio::select! {
+                        /* workaround for https://github.com/webrtc-rs/webrtc/issues/614 */
+                        _ = sleep => continue,
+                        c = listener.accept() => match c {
+                            Ok((conn, addr)) => {
+                                log::info!("dtls client connected, ip: {addr}");
+                                let mut conns = conns_clone.lock().await;
+                                conns.push((addr, conn.clone()));
+                                let dtls_conn: &DTLSConn = conn.as_any().downcast_ref().expect("dtls conn");
+                                let certs = dtls_conn.connection_state().await.peer_certificates;
+                                let cert = certs.first().expect("cert");
+                                let fingerprint = crypto::generate_fingerprint(cert);
+                                listen_tx.send(ListenEvent::Accept { addr, fingerprint }).expect("channel closed");
+                                spawn_local(read_loop(conns_clone.clone(), addr, conn, listen_tx.clone()));
+                            },
                             Err(e) => {
-                                log::warn!("unable to change port: {e}");
-                                port_changed_tx.send(Err(e.into())).expect("channel closed");
+                                if let Error::Std(ref e) = e {
+                                    if let Some(e) = e.0.downcast_ref::<webrtc_dtls::Error>() {
+                                        match e {
+                                            webrtc_dtls::Error::ErrVerifyDataMismatch => {
+                                                if let Some(fingerprint) = connection_attempts.lock().expect("lock").pop_front() {
+                                                    listen_tx.send(ListenEvent::Rejected { fingerprint }).expect("channel closed");
+                                                }
+                                            }
+                                            _ => log::warn!("accept: {e}"),
+                                        }
+                                    } else {
+                                        log::warn!("accept: {e:?}");
+                                    }
+                                } else {
+                                    log::warn!("accept: {e:?}");
+                                }
                             }
-                        };
-                    },
-                };
-            }
-        });
+                        },
+                        port = request_port_change_rx.recv() => {
+                            let port = port.expect("channel closed");
+                            let listen_addr = SocketAddr::new("0.0.0.0".parse().expect("invalid ip"), port);
+                            match listen(listen_addr, cfg.clone()).await {
+                                Ok(new_listener) => {
+                                    let _ = listener.close().await;
+                                    listener = new_listener;
+                                    port_changed_tx.send(Ok(port)).expect("channel closed");
+                                }
+                                Err(e) => {
+                                    log::warn!("unable to change port: {e}");
+                                    port_changed_tx.send(Err(e.into())).expect("channel closed");
+                                }
+                            };
+                        },
+                    };
+                }
+            })
+        };
 
         Ok(Self {
             conns,
@@ -186,7 +235,7 @@ impl LanMouseListener {
 }
 
 impl Stream for LanMouseListener {
-    type Item = (ProtoEvent, SocketAddr);
+    type Item = ListenEvent;
 
     fn poll_next(
         mut self: std::pin::Pin<&mut Self>,
@@ -197,23 +246,25 @@ impl Stream for LanMouseListener {
 }
 
 async fn read_loop(
-    conns: Rc<Mutex<Vec<(SocketAddr, ArcConn)>>>,
+    conns: Rc<AsyncMutex<Vec<(SocketAddr, ArcConn)>>>,
     addr: SocketAddr,
     conn: ArcConn,
-    dtls_tx: Sender<(ProtoEvent, SocketAddr)>,
+    dtls_tx: Sender<ListenEvent>,
 ) -> Result<(), Error> {
     let mut b = [0u8; MAX_EVENT_SIZE];
 
     while conn.recv(&mut b).await.is_ok() {
         match b.try_into() {
-            Ok(event) => dtls_tx.send((event, addr)).expect("channel closed"),
+            Ok(event) => dtls_tx
+                .send(ListenEvent::Msg { event, addr })
+                .expect("channel closed"),
             Err(e) => {
                 log::warn!("error receiving event: {e}");
                 break;
             }
         }
     }
-    log::info!("dtls client disconnected {:?}", addr);
+    log::info!("dtls client disconnected {addr:?}");
     let mut conns = conns.lock().await;
     let index = conns
         .iter()

src/main.rs

@@ -3,15 +3,18 @@ use input_capture::InputCaptureError;
 use input_emulation::InputEmulationError;
 use lan_mouse::{
     capture_test,
-    config::{Config, ConfigError, Frontend},
+    config::{self, Command, Config, ConfigError},
     emulation_test,
     service::{Service, ServiceError},
 };
+use lan_mouse_cli::CliError;
+#[cfg(feature = "gtk")]
+use lan_mouse_gtk::GtkError;
 use lan_mouse_ipc::{IpcError, IpcListenerCreationError};
 use std::{
     future::Future,
     io,
-    process::{self, Child, Command},
+    process::{self, Child},
 };
 use thiserror::Error;
 use tokio::task::LocalSet;
@@ -30,6 +33,11 @@ enum LanMouseError {
     Capture(#[from] InputCaptureError),
     #[error(transparent)]
     Emulation(#[from] InputEmulationError),
+    #[cfg(feature = "gtk")]
+    #[error(transparent)]
+    Gtk(#[from] GtkError),
+    #[error(transparent)]
+    Cli(#[from] CliError),
 }
 
 fn main() {
@@ -44,35 +52,52 @@ fn main() {
 }
 
 fn run() -> Result<(), LanMouseError> {
-    // parse config file + cli args
-    let config = Config::new()?;
-    if config.test_capture {
-        run_async(capture_test::run(config))?;
-    } else if config.test_emulation {
-        run_async(emulation_test::run(config))?;
-    } else if config.daemon {
-        // if daemon is specified we run the service
-        match run_async(run_service(config)) {
-            Err(LanMouseError::Service(ServiceError::IpcListen(
-                IpcListenerCreationError::AlreadyRunning,
-            ))) => log::info!("service already running!"),
-            r => r?,
-        }
-    } else {
-        //  otherwise start the service as a child process and
-        //  run a frontend
-        let mut service = start_service()?;
-        run_frontend(&config)?;
-        #[cfg(unix)]
-        {
-            // on unix we give the service a chance to terminate gracefully
-            let pid = service.id() as libc::pid_t;
-            unsafe {
-                libc::kill(pid, libc::SIGINT);
+    let config = config::Config::new()?;
+    match config.command() {
+        Some(command) => match command {
+            Command::TestEmulation(args) => run_async(emulation_test::run(config, args))?,
+            Command::TestCapture(args) => run_async(capture_test::run(config, args))?,
+            Command::Cli(cli_args) => run_async(lan_mouse_cli::run(cli_args))?,
+            Command::Daemon => {
+                // if daemon is specified we run the service
+                match run_async(run_service(config)) {
+                    Err(LanMouseError::Service(ServiceError::IpcListen(
+                        IpcListenerCreationError::AlreadyRunning,
+                    ))) => log::info!("service already running!"),
+                    r => r?,
+                }
+            }
+        },
+        None => {
+            //  otherwise start the service as a child process and
+            //  run a frontend
+            #[cfg(feature = "gtk")]
+            {
+                let mut service = start_service()?;
+                let res = lan_mouse_gtk::run();
+                #[cfg(unix)]
+                {
+                    // on unix we give the service a chance to terminate gracefully
+                    let pid = service.id() as libc::pid_t;
+                    unsafe {
+                        libc::kill(pid, libc::SIGINT);
+                    }
+                    service.wait()?;
+                }
+                service.kill()?;
+                res?;
+            }
+            #[cfg(not(feature = "gtk"))]
+            {
+                // run daemon if gtk is diabled
+                match run_async(run_service(config)) {
+                    Err(LanMouseError::Service(ServiceError::IpcListen(
+                        IpcListenerCreationError::AlreadyRunning,
+                    ))) => log::info!("service already running!"),
+                    r => r?,
+                }
             }
-            service.wait()?;
         }
-        service.kill()?;
     }
 
     Ok(())
@@ -94,33 +119,20 @@ where
 }
 
 fn start_service() -> Result<Child, io::Error> {
-    let child = Command::new(std::env::current_exe()?)
+    let child = process::Command::new(std::env::current_exe()?)
         .args(std::env::args().skip(1))
-        .arg("--daemon")
+        .arg("daemon")
         .spawn()?;
     Ok(child)
 }
 
 async fn run_service(config: Config) -> Result<(), ServiceError> {
-    log::info!("using config: {:?}", config.path);
-    log::info!("Press {:?} to release the mouse", config.release_bind);
+    let release_bind = config.release_bind();
+    let config_path = config.config_path().to_owned();
     let mut service = Service::new(config).await?;
+    log::info!("using config: {config_path:?}");
+    log::info!("Press {release_bind:?} to release the mouse");
     service.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/service.rs

@@ -1,7 +1,7 @@
 use crate::{
     capture::{Capture, CaptureType, ICaptureEvent},
     client::ClientManager,
-    config::Config,
+    config::{Config, ConfigClient},
     connect::LanMouseConnection,
     crypto,
     dns::{DnsEvent, DnsResolver},
@@ -9,7 +9,7 @@ use crate::{
     listen::{LanMouseListener, ListenerCreationError},
 };
 use futures::StreamExt;
-use hickory_resolver::error::ResolveError;
+use hickory_resolver::ResolveError;
 use lan_mouse_ipc::{
     AsyncFrontendListener, ClientConfig, ClientHandle, ClientState, FrontendEvent, FrontendRequest,
     IpcError, IpcListenerCreationError, Position, Status,
@@ -39,6 +39,8 @@ pub enum ServiceError {
 }
 
 pub struct Service {
+    /// configuration
+    config: Config,
     /// input capture
     capture: Capture,
     /// input emulation
@@ -80,7 +82,7 @@ struct Incoming {
 impl Service {
     pub async fn new(config: Config) -> Result<Self, ServiceError> {
         let client_manager = ClientManager::default();
-        for client in config.get_clients() {
+        for client in config.clients() {
             let config = ClientConfig {
                 hostname: client.hostname,
                 fix_ips: client.ips.into_iter().collect(),
@@ -99,29 +101,30 @@ impl Service {
         }
 
         // load certificate
-        let cert = crypto::load_or_generate_key_and_cert(&config.cert_path)?;
+        let cert = crypto::load_or_generate_key_and_cert(config.cert_path())?;
         let public_key_fingerprint = crypto::certificate_fingerprint(&cert);
 
         // create frontend communication adapter, exit if already running
         let frontend_listener = AsyncFrontendListener::new().await?;
 
-        let authorized_keys = Arc::new(RwLock::new(config.authorized_fingerprints.clone()));
+        let authorized_keys = Arc::new(RwLock::new(config.authorized_fingerprints()));
         // listener + connection
         let listener =
-            LanMouseListener::new(config.port, cert.clone(), authorized_keys.clone()).await?;
+            LanMouseListener::new(config.port(), cert.clone(), authorized_keys.clone()).await?;
         let conn = LanMouseConnection::new(cert.clone(), client_manager.clone());
 
         // input capture + emulation
-        let capture_backend = config.capture_backend.map(|b| b.into());
-        let capture = Capture::new(capture_backend, conn, config.release_bind.clone());
-        let emulation_backend = config.emulation_backend.map(|b| b.into());
+        let capture_backend = config.capture_backend().map(|b| b.into());
+        let capture = Capture::new(capture_backend, conn, config.release_bind());
+        let emulation_backend = config.emulation_backend().map(|b| b.into());
         let emulation = Emulation::new(emulation_backend, listener);
 
         // create dns resolver
         let resolver = DnsResolver::new()?;
 
-        let port = config.port;
+        let port = config.port();
         let service = Self {
+            config,
             capture,
             emulation,
             frontend_listener,
@@ -142,11 +145,15 @@ impl Service {
     }
 
     pub async fn run(&mut self) -> Result<(), ServiceError> {
-        for handle in self.client_manager.active_clients() {
+        let active = self.client_manager.active_clients();
+        for handle in active.iter() {
             // small hack: `activate_client()` checks, if the client
             // is already active in client_manager and does not create a
             // capture barrier in that case so we have to deactivate it first
-            self.client_manager.deactivate_client(handle);
+            self.client_manager.deactivate_client(*handle);
+        }
+
+        for handle in active {
             self.activate_client(handle);
         }
 
@@ -178,22 +185,73 @@ impl Service {
             Err(e) => return log::error!("error receiving request: {e}"),
         };
         match request {
-            FrontendRequest::Activate(handle, active) => self.set_client_active(handle, active),
-            FrontendRequest::AuthorizeKey(desc, fp) => self.add_authorized_key(desc, fp),
+            FrontendRequest::Activate(handle, active) => {
+                self.set_client_active(handle, active);
+                self.save_config();
+            }
+            FrontendRequest::AuthorizeKey(desc, fp) => {
+                self.add_authorized_key(desc, fp);
+                self.save_config();
+            }
             FrontendRequest::ChangePort(port) => self.change_port(port),
-            FrontendRequest::Create => self.add_client(),
-            FrontendRequest::Delete(handle) => self.remove_client(handle),
+            FrontendRequest::Create => {
+                self.add_client();
+                self.save_config();
+            }
+            FrontendRequest::Delete(handle) => {
+                self.remove_client(handle);
+                self.save_config();
+            }
             FrontendRequest::EnableCapture => self.capture.reenable(),
             FrontendRequest::EnableEmulation => self.emulation.reenable(),
             FrontendRequest::Enumerate() => self.enumerate(),
-            FrontendRequest::GetState(handle) => self.broadcast_client(handle),
-            FrontendRequest::UpdateFixIps(handle, fix_ips) => self.update_fix_ips(handle, fix_ips),
-            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, pos),
+            FrontendRequest::UpdateFixIps(handle, fix_ips) => {
+                self.update_fix_ips(handle, fix_ips);
+                self.save_config();
+            }
+            FrontendRequest::UpdateHostname(handle, host) => {
+                self.update_hostname(handle, host);
+                self.save_config();
+            }
+            FrontendRequest::UpdatePort(handle, port) => {
+                self.update_port(handle, port);
+                self.save_config();
+            }
+            FrontendRequest::UpdatePosition(handle, pos) => {
+                self.update_pos(handle, pos);
+                self.save_config();
+            }
             FrontendRequest::ResolveDns(handle) => self.resolve(handle),
             FrontendRequest::Sync => self.sync_frontend(),
-            FrontendRequest::RemoveAuthorizedKey(key) => self.remove_authorized_key(key),
+            FrontendRequest::RemoveAuthorizedKey(key) => {
+                self.remove_authorized_key(key);
+                self.save_config();
+            }
+            FrontendRequest::UpdateEnterHook(handle, enter_hook) => {
+                self.update_enter_hook(handle, enter_hook)
+            }
+            FrontendRequest::SaveConfiguration => self.save_config(),
+        }
+    }
+
+    fn save_config(&mut self) {
+        let clients = self.client_manager.clients();
+        let clients = clients
+            .into_iter()
+            .map(|(c, s)| ConfigClient {
+                ips: HashSet::from_iter(c.fix_ips),
+                hostname: c.hostname,
+                port: c.port,
+                pos: c.pos,
+                active: s.active,
+                enter_hook: c.cmd,
+            })
+            .collect();
+        self.config.set_clients(clients);
+        let authorized_keys = self.authorized_keys.read().expect("lock").clone();
+        self.config.set_authorized_keys(authorized_keys);
+        if let Err(e) = self.config.write_back() {
+            log::warn!("failed to write config: {e}");
         }
     }
 
@@ -205,7 +263,10 @@ impl Service {
 
     fn handle_emulation_event(&mut self, event: EmulationEvent) {
         match event {
-            EmulationEvent::Connected {
+            EmulationEvent::ConnectionAttempt { fingerprint } => {
+                self.notify_frontend(FrontendEvent::ConnectionAttempt { fingerprint });
+            }
+            EmulationEvent::Entered {
                 addr,
                 pos,
                 fingerprint,
@@ -213,7 +274,11 @@ impl Service {
                 // check if already registered
                 if !self.incoming_conns.contains(&addr) {
                     self.add_incoming(addr, pos, fingerprint.clone());
-                    self.notify_frontend(FrontendEvent::IncomingConnected(fingerprint, addr, pos));
+                    self.notify_frontend(FrontendEvent::DeviceEntered {
+                        fingerprint,
+                        addr,
+                        pos,
+                    });
                 } else {
                     self.update_incoming(addr, pos, fingerprint);
                 }
@@ -240,6 +305,9 @@ impl Service {
                 self.notify_frontend(FrontendEvent::EmulationStatus(self.emulation_status));
             }
             EmulationEvent::ReleaseNotify => self.capture.release(),
+            EmulationEvent::Connected { addr, fingerprint } => {
+                self.notify_frontend(FrontendEvent::DeviceConnected { addr, fingerprint });
+            }
         }
     }
 
@@ -283,7 +351,7 @@ impl Service {
                 handle
             }
         };
-        self.notify_frontend(FrontendEvent::Changed(handle));
+        self.broadcast_client(handle);
     }
 
     fn resolve(&self, handle: ClientHandle) {
@@ -341,7 +409,11 @@ impl Service {
             self.remove_incoming(addr);
             self.add_incoming(addr, pos, fingerprint.clone());
             self.notify_frontend(FrontendEvent::IncomingDisconnected(addr));
-            self.notify_frontend(FrontendEvent::IncomingConnected(fingerprint, addr, pos));
+            self.notify_frontend(FrontendEvent::DeviceEntered {
+                fingerprint,
+                addr,
+                pos,
+            });
         }
     }
 
@@ -399,7 +471,7 @@ impl Service {
         log::debug!("deactivating client {handle}");
         if self.client_manager.deactivate_client(handle) {
             self.capture.destroy(handle);
-            self.notify_frontend(FrontendEvent::Changed(handle));
+            self.broadcast_client(handle);
             log::info!("deactivated client {handle}");
         }
     }
@@ -425,7 +497,7 @@ impl Service {
         if self.client_manager.activate_client(handle) {
             /* notify capture and frontends */
             self.capture.create(handle, pos, CaptureType::Default);
-            self.notify_frontend(FrontendEvent::Changed(handle));
+            self.broadcast_client(handle);
             log::info!("activated client {handle} ({pos})");
         }
     }
@@ -452,19 +524,20 @@ impl Service {
 
     fn update_fix_ips(&mut self, handle: ClientHandle, fix_ips: Vec<IpAddr>) {
         self.client_manager.set_fix_ips(handle, fix_ips);
-        self.notify_frontend(FrontendEvent::Changed(handle));
+        self.broadcast_client(handle);
     }
 
     fn update_hostname(&mut self, handle: ClientHandle, hostname: Option<String>) {
+        log::info!("hostname changed: {hostname:?}");
         if self.client_manager.set_hostname(handle, hostname.clone()) {
             self.resolve(handle);
         }
-        self.notify_frontend(FrontendEvent::Changed(handle));
+        self.broadcast_client(handle);
     }
 
     fn update_port(&mut self, handle: ClientHandle, port: u16) {
         self.client_manager.set_port(handle, port);
-        self.notify_frontend(FrontendEvent::Changed(handle));
+        self.broadcast_client(handle);
     }
 
     fn update_pos(&mut self, handle: ClientHandle, pos: Position) {
@@ -473,7 +546,12 @@ impl Service {
             self.deactivate_client(handle);
             self.activate_client(handle);
         }
-        self.notify_frontend(FrontendEvent::Changed(handle));
+        self.broadcast_client(handle);
+    }
+
+    fn update_enter_hook(&mut self, handle: ClientHandle, enter_hook: Option<String>) {
+        self.client_manager.set_enter_hook(handle, enter_hook);
+        self.broadcast_client(handle);
     }
 
     fn broadcast_client(&mut self, handle: ClientHandle) {