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Author SHA1 Message Date
Ferdinand Schober
f0f73ea7ba log pressed keys 2024-09-23 20:48:45 +02:00
71 changed files with 3029 additions and 6453 deletions

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@@ -55,9 +55,7 @@ jobs:
# choco install msys2
# choco install visualstudio2022-workload-vctools
# choco install pkgconfiglite
py -m venv .venv
.venv\Scripts\activate.ps1
py -m pip install gvsbuild
pipx 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"

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@@ -66,9 +66,7 @@ jobs:
# choco install msys2
# choco install visualstudio2022-workload-vctools
# choco install pkgconfiglite
py -m venv .venv
.venv\Scripts\activate.ps1
py -m pip install gvsbuild
pipx 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"

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@@ -3,7 +3,7 @@ name: "Tagged Release"
on:
push:
tags:
- v**
- "v*"
jobs:
linux-release-build:
@@ -51,9 +51,7 @@ jobs:
# choco install msys2
# choco install visualstudio2022-workload-vctools
# choco install pkgconfiglite
py -m venv .venv
.venv\Scripts\activate.ps1
py -m pip install gvsbuild
pipx 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"
@@ -114,7 +112,7 @@ jobs:
steps:
- name: Download build artifacts
uses: actions/download-artifact@v4
- name: Create Release
- name: "Create Release"
uses: "marvinpinto/action-automatic-releases@latest"
with:
repo_token: "${{ secrets.GITHUB_TOKEN }}"

5
.gitignore vendored
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@@ -4,7 +4,4 @@
.vs/
.vscode/
.direnv/
result
*.pem
*.csr
extfile.conf
result

2222
Cargo.lock generated

File diff suppressed because it is too large Load Diff

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@@ -12,29 +12,23 @@ members = [
[package]
name = "lan-mouse"
description = "Software KVM Switch / mouse & keyboard sharing software for Local Area Networks"
version = "0.10.0"
version = "0.9.1"
edition = "2021"
license = "GPL-3.0-or-later"
repository = "https://github.com/feschber/lan-mouse"
[profile.release]
codegen-units = 1
lto = "fat"
strip = true
panic = "abort"
[build-dependencies]
shadow-rs = "0.38.0"
lto = "fat"
[dependencies]
input-event = { path = "input-event", version = "0.3.0" }
input-emulation = { path = "input-emulation", version = "0.3.0", default-features = false }
input-capture = { path = "input-capture", version = "0.3.0", default-features = false }
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 = "0.38.0", features = ["metadata"] }
input-event = { path = "input-event", version = "0.2.1" }
input-emulation = { path = "input-emulation", version = "0.2.1", default-features = false }
input-capture = { path = "input-capture", version = "0.2.0", default-features = false }
lan-mouse-cli = { path = "lan-mouse-cli", version = "0.1.0" }
lan-mouse-gtk = { path = "lan-mouse-gtk", version = "0.1.0", optional = true }
lan-mouse-ipc = { path = "lan-mouse-ipc", version = "0.1.0" }
lan-mouse-proto = { path = "lan-mouse-proto", version = "0.1.0" }
hickory-resolver = "0.24.1"
toml = "0.8"
@@ -55,37 +49,17 @@ tokio = { version = "1.32.0", features = [
futures = "0.3.28"
clap = { version = "4.4.11", features = ["derive"] }
slab = "0.4.9"
thiserror = "2.0.0"
thiserror = "1.0.61"
tokio-util = "0.7.11"
local-channel = "0.1.5"
webrtc-dtls = { version = "0.10.0", features = ["pem"] }
webrtc-util = "0.9.0"
rustls = { version = "0.23.12", default-features = false, features = [
"std",
"ring",
] }
rcgen = "0.13.1"
sha2 = "0.10.8"
[target.'cfg(unix)'.dependencies]
libc = "0.2.148"
[features]
default = [
"gtk",
"layer_shell_capture",
"x11_capture",
"libei_capture",
"wlroots_emulation",
"libei_emulation",
"rdp_emulation",
"x11_emulation",
]
default = ["wayland", "x11", "xdg_desktop_portal", "libei", "gtk"]
wayland = ["input-capture/wayland", "input-emulation/wayland"]
x11 = ["input-capture/x11", "input-emulation/x11"]
xdg_desktop_portal = ["input-emulation/xdg_desktop_portal"]
libei = ["input-event/libei", "input-capture/libei", "input-emulation/libei"]
gtk = ["dep:lan-mouse-gtk"]
layer_shell_capture = ["input-capture/layer_shell"]
x11_capture = ["input-capture/x11"]
libei_capture = ["input-event/libei", "input-capture/libei"]
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"]

359
README.md
View File

@@ -1,64 +1,78 @@
# Lan Mouse
Lan Mouse is a *cross-platform* mouse and keyboard sharing software similar to universal-control on Apple devices.
It allows for using multiple PCs via a single set of mouse and keyboard.
Lan Mouse is a mouse and keyboard sharing software similar to universal-control on Apple devices.
It allows for using multiple pcs with a single set of mouse and keyboard.
This is also known as a Software KVM switch.
Goal of this project is to be an open-source alternative to proprietary tools like [Synergy 2/3](https://symless.com/synergy), [Share Mouse](https://www.sharemouse.com/de/)
and other open source tools like [Deskflow](https://github.com/deskflow/deskflow) or [Input Leap](https://github.com/input-leap) (Synergy fork).
Focus lies on performance, ease of use and a maintainable implementation that can be expanded to support additional backends for e.g. Android, iOS, ... in the future.
***blazingly fast™*** because it's written in rust.
The primary target is Wayland on Linux but Windows and MacOS and Linux on Xorg have partial support as well (see below for more details).
- _Now with a gtk frontend_
<picture>
<source media="(prefers-color-scheme: dark)" srcset="/screenshots/dark.png?raw=true">
<source media="(prefers-color-scheme: light)" srcset="/screenshots/light.png?raw=true">
<img alt="Screenshot of Lan-Mouse" srcset="/screenshots/dark.png">
<source media="(prefers-color-scheme: dark)" srcset="https://github.com/feschber/lan-mouse/assets/40996949/016a06a9-76db-4951-9dcc-127d012c59df">
<source media="(prefers-color-scheme: light)" srcset="https://github.com/feschber/lan-mouse/assets/40996949/d6318340-f811-4e16-9d6e-d1b79883c709">
<img alt="Screenshot of Lan-Mouse" srcset="https://github.com/feschber/lan-mouse/assets/40996949/016a06a9-76db-4951-9dcc-127d012c59df">
</picture>
## Encryption
Goal of this project is to be an open-source replacement for proprietary tools like [Synergy 2/3](https://symless.com/synergy), [Share Mouse](https://www.sharemouse.com/de/).
Focus lies on performance and a clean, manageable implementation that can easily be expanded to support additional backends like e.g. Android, iOS, ... .
***blazingly fast™*** because it's written in rust.
For an alternative (with slightly different goals) you may check out [Synergy 1 Community Edition](https://github.com/symless/synergy) or [Input Leap](https://github.com/input-leap) (Synergy fork).
> [!WARNING]
> Since this tool has gained a bit of popularity over the past couple of days:
>
> All network traffic is currently **unencrypted** and sent in **plaintext**.
>
> A malicious actor with access to the network could read input data or send input events with spoofed IPs to take control over a device.
>
> Therefore you should only use this tool in your local network with trusted devices for now
> and I take no responsibility for any leakage of data!
Lan Mouse encrypts all network traffic using the DTLS implementation provided by [WebRTC.rs](https://github.com/webrtc-rs/webrtc).
There are currently no mitigations in place for timing side-channel attacks.
## OS Support
Most current desktop environments and operating systems are fully supported, this includes
- GNOME >= 45
- KDE Plasma >= 6.1
- Most wlroots based compositors, including Sway (>= 1.8), Hyprland and Wayfire
- Windows
- MacOS
The following table shows support for input emulation (to emulate events received from other clients) and
input capture (to send events *to* other clients) on different operating systems:
### Caveats / Known Issues
| OS / Desktop Environment | input emulation | input capture |
|---------------------------|--------------------------|--------------------------------------|
| Wayland (wlroots) | :heavy_check_mark: | :heavy_check_mark: |
| Wayland (KDE) | :heavy_check_mark: | :heavy_check_mark: |
| Wayland (Gnome) | :heavy_check_mark: | :heavy_check_mark: (starting at GNOME 45) |
| Windows | :heavy_check_mark: | :heavy_check_mark: |
| X11 | :heavy_check_mark: | WIP |
| MacOS | :heavy_check_mark: | WIP |
> [!Important]
> - **X11** currently only has support for input emulation, i.e. can only be used on the receiving end.
> Gnome -> Sway only partially works (modifier events are not handled correctly)
> [!Important]
> **Wayfire**
>
> - **Sway / wlroots**: Wlroots based compositors without libei support on the receiving end currently do not handle modifier events on the client side.
> This results in CTRL / SHIFT / ALT / SUPER keys not working with a sending device that is NOT using the `layer-shell` backend
>
> - **Wayfire**: If you are using [Wayfire](https://github.com/WayfireWM/wayfire), make sure to use a recent version (must be newer than October 23rd) and **add `shortcuts-inhibit` to the list of plugins in your wayfire config!**
> If you are using [Wayfire](https://github.com/WayfireWM/wayfire), make sure to use a recent version (must be newer than October 23rd) and **add `shortcuts-inhibit` to the list of plugins in your wayfire config!**
> Otherwise input capture will not work.
>
> - **Windows**: The mouse cursor will be invisible when sending input to a Windows system if
> [!Important]
> The mouse cursor will be invisible when sending input to a Windows system if
> there is no real mouse connected to the machine.
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
### Install via cargo
```sh
cargo install lan-mouse
```
<details>
<summary>Arch Linux</summary>
### Download from Releases
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).
### Arch Linux
Lan Mouse can be installed from the [official repositories](https://archlinux.org/packages/extra/x86_64/lan-mouse/):
@@ -66,37 +80,39 @@ Lan Mouse can be installed from the [official repositories](https://archlinux.or
pacman -S lan-mouse
```
The prerelease version (following `main`) is available on the AUR:
It is also available on the AUR:
```sh
# git version (includes latest changes)
paru -S lan-mouse-git
# alternatively
paru -S lan-mouse-bin
```
</details>
<details>
<summary>Nix (OS)</summary>
### Nix
- nixpkgs: [search.nixos.org](https://search.nixos.org/packages?channel=unstable&show=lan-mouse&from=0&size=50&sort=relevance&type=packages&query=lan-mouse)
- flake: [README.md](./nix/README.md)
</details>
<details>
<summary>Manual Installation</summary>
### Manual Installation
First make sure to [install the necessary dependencies](#installing-dependencies).
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).
Alternatively, the `lan-mouse` binary can be compiled from source (see below).
### Installing desktop file, app icon and firewall rules (optional)
Build in release mode:
```sh
# install lan-mouse (replace path/to/ with the correct path)
sudo cp path/to/lan-mouse /usr/local/bin/
cargo build --release
```
Run directly:
```sh
cargo run --release
```
Install the files:
```sh
# install lan-mouse
sudo cp target/release/lan-mouse /usr/local/bin/
# install app icon
sudo mkdir -p /usr/local/share/icons/hicolor/scalable/apps
@@ -114,34 +130,17 @@ sudo cp firewall/lan-mouse.xml /etc/firewalld/services
# -> enable the service in firewalld settings
```
Instead of downloading from the releases, the `lan-mouse` binary
can be easily compiled via cargo or nix:
### Conditional Compilation
### Compiling and installing manually:
```sh
# compile in release mode
cargo build --release
Currently only x11, wayland, windows and MacOS are supported backends.
Depending on the toolchain used, support for other platforms is omitted
automatically (it does not make sense to build a Windows `.exe` with
support for x11 and wayland backends).
# install lan-mouse
sudo cp target/release/lan-mouse /usr/local/bin/
```
However one might still want to omit support for e.g. wayland, x11 or libei on
a Linux system.
### Compiling and installing via cargo:
```sh
# will end up in ~/.cargo/bin
cargo install lan-mouse
```
### Compiling and installing via nix:
```sh
# you can find the executable in result/bin/lan-mouse
nix-build
```
### Conditional compilation
Support for other platforms is omitted automatically based on the active
rust toolchain.
Additionally, available backends and frontends can be configured manually via
This is possible through
[cargo features](https://doc.rust-lang.org/cargo/reference/features.html).
E.g. if only wayland support is needed, the following command produces
@@ -150,17 +149,14 @@ an executable with just support for wayland:
cargo build --no-default-features --features wayland
```
For a detailed list of available features, checkout the [Cargo.toml](./Cargo.toml)
</details>
## Installing Dependencies for Development / Compiling from Source
## Installing Dependencies
<details>
<summary>MacOS</summary>
```sh
brew install libadwaita pkg-config
brew install libadwaita
```
</details>
@@ -187,24 +183,12 @@ sudo pacman -S libadwaita gtk libx11 libxtst
sudo dnf install libadwaita-devel libXtst-devel libX11-devel
```
</details>
<details>
<summary>Nix</summary>
```sh
nix-shell .
```
</details>
<details>
<summary>Nix (flake)</summary>
```sh
nix develop
```
</details>
<details>
<summary>Windows</summary>
> [!NOTE]
> This is only necessary when building lan-mouse from source. The windows release comes with precompiled gtk dlls.
- First install [Rust](https://www.rust-lang.org/tools/install).
- Then follow the instructions at [gtk-rs.org](https://gtk-rs.org/gtk4-rs/stable/latest/book/installation_windows.html)
@@ -235,38 +219,27 @@ python -m pipx ensurepath
pipx install gvsbuild
# build gtk + libadwaita
gvsbuild build gtk4 libadwaita librsvg adwaita-icon-theme
gvsbuild build gtk4 libadwaita librsvg
```
- **Make sure to add the directory** `C:\gtk-build\gtk\x64\release\bin`
[**to the `PATH` environment variable**]((https://learn.microsoft.com/en-us/previous-versions/office/developer/sharepoint-2010/ee537574(v=office.14))). Otherwise the project will fail to build.
To avoid building GTK from source, it is possible to disable
the gtk frontend (see conditional compilation).
the gtk frontend (see conditional compilation below).
</details>
## Usage
<details>
<summary>Gtk Frontend</summary>
### Gtk Frontend
By default the gtk frontend will open when running `lan-mouse`.
To connect a device you want to control, simply click the `Add` button and enter the hostname
of the device.
To add a new connection, simply click the `Add` button on *both* devices,
enter the corresponding hostname and activate it.
On the *remote* device, authorize your *local* device for incoming traffic using the `Authorize` button
under the "Incoming Connections" section.
The fingerprint for authorization can be found under the general section of your *local* device.
It is of the form "aa:bb:cc:..."
Authorized devices can be persisted using the configuration file (see [Configuration](#configuration)).
If the device still can not be entered, make sure you have UDP port `4242` (or the one selected) opened up in your firewall.
</details>
<details>
<summary>Command Line Interface</summary>
If the mouse can not be moved onto a device, make sure you have port `4242` (or the one selected)
opened up in your firewall.
### Command Line Interface
The cli interface can be enabled using `--frontend cli` as commandline arguments.
Type `help` to list the available commands.
@@ -280,17 +253,13 @@ $ cargo run --release -- --frontend cli
(...)
> activate 0
```
</details>
<details>
<summary>Daemon Mode</summary>
Lan Mouse can be launched in daemon mode to keep it running in the background (e.g. for use in a systemd-service).
### Daemon
Lan Mouse can be launched in daemon mode to keep it running in the background.
To do so, add `--daemon` to the commandline args:
```sh
lan-mouse --daemon
$ cargo run --release -- --daemon
```
In order to start lan-mouse with a graphical session automatically,
@@ -303,7 +272,6 @@ cp service/lan-mouse.service ~/.config/systemd/user
systemctl --user daemon-reload
systemctl --user enable --now lan-mouse.service
```
</details>
## Configuration
To automatically load clients on startup, the file `$XDG_CONFIG_HOME/lan-mouse/config.toml` is parsed.
@@ -314,7 +282,7 @@ 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 [input-event/src/scancode.rs#L172](input-event/src/scancode.rs#L176).
> to their names in [src/scancode.rs#L172](src/scancode.rs#L172).
> This is bound to change
```toml
@@ -326,14 +294,9 @@ 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"
# # possible values are "cli" and "gtk"
# frontend = "gtk"
# list of authorized tls certificate fingerprints that
# are accepted for incoming traffic
[authorized_fingerprints]
"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]
# hostname
@@ -364,57 +327,109 @@ Where `left` can be either `left`, `right`, `top` or `bottom`.
- [x] Liveness tracking: Automatically release keys, when server offline
- [x] MacOS KeyCode Translation
- [x] Libei Input Capture
- [x] MacOS Input Capture
- [x] Windows Input Capture
- [x] Encryption
- [ ] X11 Input Capture
- [ ] Windows Input Capture
- [ ] MacOS Input Capture
- [ ] Latency measurement and visualization
- [ ] Bandwidth usage measurement and visualization
- [ ] Clipboard support
- [ ] *Encryption*
## Protocol
Currently *all* mouse and keyboard events are sent via **UDP** for performance reasons.
Each event is sent as one single datagram, currently without any acknowledgement to guarantee 0% packet loss.
This means, any packet that is lost results in a discarded mouse / key event, which is ignored for now.
**UDP** also has the additional benefit that no reconnection logic is required.
Any client can just go offline and it will simply start working again as soon as it comes back online.
Additionally a tcp server is hosted for data that needs to be sent reliably (e.g. the keymap from the server or clipboard contents in the future) can be requested via a tcp connection.
## Bandwidth considerations
The most bandwidth is taken up by mouse events. A typical office mouse has a polling rate of 125Hz
while gaming mice typically have a much higher polling rate of 1000Hz.
A mouse Event consists of 21 Bytes:
- 1 Byte for the event type enum,
- 4 Bytes (u32) for the timestamp,
- 8 Bytes (f64) for dx,
- 8 Bytes (f64) for dy.
Additionally the IP header with 20 Bytes and the udp header with 8 Bytes take up another 28 Byte.
So in total there is 49 * 1000 Bytes/s for a 1000Hz gaming mouse.
This makes for a bandwidth requirement of 392 kbit/s in total _even_ for a high end gaming mouse.
So bandwidth is a non-issue.
Larger data chunks, like the keymap are offered by the server via tcp listening on the same port.
This way we dont need to implement any congestion control and leave this up to tcp.
In the future this can be used for e.g. clipboard contents as well.
## Packets per Second
While on LAN the performance is great,
some WIFI cards seem to struggle with the amount of packets per second,
particularly on high-end gaming mice with 1000Hz+ polling rates.
The plan is to implement a way of accumulating packets and sending them as
one single key event to reduce the packet rate (basically reducing the polling
rate artificially).
The way movement data is currently sent is also quite wasteful since even a 16bit integer
is likely enough to represent even the fastest possible mouse movement.
A different encoding that is more efficient for smaller values like
[Protocol Buffers](https://protobuf.dev/programming-guides/encoding/)
would be a better choice for the future and could also help for WIFI connections.
## Security
Sending key and mouse event data over the local network might not be the biggest security concern but in any public network or business environment it's *QUITE* a problem to basically broadcast your keystrokes.
- There should be an encryption layer below the application to enable a secure link.
- The encryption keys could be generated by the graphical frontend.
## Detailed OS Support
## Wayland support
### Input Emulation (for receiving events)
On wayland input-emulation is in an early/unstable state as of writing this.
In order to use a device for sending events, an **input-capture** backend is required, while receiving events requires
a supported **input-emulation** *and* **input-capture** backend.
For this reason a suitable backend is chosen based on the active desktop environment / compositor.
A suitable backend is chosen automatically based on the active desktop environment / compositor.
Different compositors have different ways of enabling input emulation:
The following sections detail the emulation and capture backends provided by lan-mouse and their support in desktop environments / operating systems.
#### Wlroots
Most wlroots-based compositors like Hyprland and Sway support the following
unstable wayland protocols for keyboard and mouse emulation:
- [virtual-keyboard-unstable-v1](https://wayland.app/protocols/virtual-keyboard-unstable-v1)
- [wlr-virtual-pointer-unstable-v1](https://wayland.app/protocols/wlr-virtual-pointer-unstable-v1)
### Input Emulation Support
#### KDE
KDE also has a protocol for input emulation ([kde-fake-input](https://wayland.app/protocols/kde-fake-input)),
it is however not exposed to third party applications.
| 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: |
The recommended way to emulate input on KDE is the
[freedesktop remote-desktop-portal](https://flatpak.github.io/xdg-desktop-portal/#gdbus-org.freedesktop.portal.RemoteDesktop).
- `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.
- `xdp`: This backend uses the [freedesktop remote-desktop-portal](https://flatpak.github.io/xdg-desktop-portal/#gdbus-org.freedesktop.portal.RemoteDesktop) and is supported on GNOME and Plasma.
- `x11`: Backend for X11 sessions.
- `windows`: Backend for Windows.
- `macos`: Backend for MacOS.
#### Gnome
Gnome uses [libei](https://gitlab.freedesktop.org/libinput/libei) for input emulation and capture,
which has the goal to become the general approach for emulating and capturing Input on Wayland.
### Input capture
To capture mouse and keyboard input, a few things are necessary:
- Displaying an immovable surface at screen edges
- Locking the mouse in place
- (optionally but highly recommended) reading unaccelerated mouse input
### Input Capture Support
| Required Protocols (Event Emitting) | Sway | Kwin | Gnome |
|----------------------------------------|--------------------|----------------------|----------------------|
| pointer-constraints-unstable-v1 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
| relative-pointer-unstable-v1 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
| keyboard-shortcuts-inhibit-unstable-v1 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
| wlr-layer-shell-unstable-v1 | :heavy_check_mark: | :heavy_check_mark: | :x: |
| 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 |
The [zwlr\_virtual\_pointer\_manager\_v1](wlr-virtual-pointer-unstable-v1) is required
to display surfaces on screen edges and used to display the immovable window on
both wlroots based compositors and KDE.
Gnome unfortunately does not support this protocol
and [likely won't ever support it](https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/1141).
~In order for layershell surfaces to be able to lock the pointer using the pointer\_constraints protocol [this patch](https://github.com/swaywm/sway/pull/7178) needs to be applied to sway.~
(this works natively on sway versions >= 1.8)
- `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.
- `windows`: Backend for input capture on Windows.
- `macos`: Backend for input capture on MacOS.
- `x11`: TODO (not yet supported)

View File

@@ -1,8 +1,15 @@
use shadow_rs::ShadowBuilder;
use std::process::Command;
fn main() {
ShadowBuilder::builder()
.deny_const(Default::default())
.build()
.expect("shadow build");
// 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}");
}

View File

@@ -3,18 +3,13 @@
# capture_backend = "LayerShell"
# release bind
release_bind = ["KeyA", "KeyS", "KeyD", "KeyF"]
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
[authorized_fingerprints]
"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]
# hostname

View File

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

46
flake.lock generated
View File

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

View File

@@ -1,7 +1,7 @@
[package]
name = "input-capture"
description = "cross-platform input-capture library used by lan-mouse"
version = "0.3.0"
version = "0.2.0"
edition = "2021"
license = "GPL-3.0-or-later"
repository = "https://github.com/feschber/lan-mouse"
@@ -10,10 +10,10 @@ repository = "https://github.com/feschber/lan-mouse"
futures = "0.3.28"
futures-core = "0.3.30"
log = "0.4.22"
input-event = { path = "../input-event", version = "0.3.0" }
input-event = { path = "../input-event", version = "0.2.1" }
memmap = "0.7"
tempfile = "3.8"
thiserror = "2.0.0"
thiserror = "1.0.61"
tokio = { version = "1.32.0", features = [
"io-util",
"io-std",
@@ -40,18 +40,18 @@ 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 = "0.9", default-features = false, features = [
"tokio",
], optional = true }
reis = { version = "0.4", features = ["tokio"], optional = true }
reis = { version = "0.2", features = ["tokio"], optional = true }
[target.'cfg(target_os="macos")'.dependencies]
core-graphics = { version = "0.24.0", features = ["highsierra"] }
core-foundation = "0.10.0"
core-graphics = { version = "0.23", features = ["highsierra"] }
core-foundation = "0.9.4"
core-foundation-sys = "0.8.6"
libc = "0.2.155"
keycode = "0.4.0"
bitflags = "2.6.0"
bitflags = "2.5.0"
[target.'cfg(windows)'.dependencies]
windows = { version = "0.58.0", features = [
@@ -65,8 +65,8 @@ windows = { version = "0.58.0", features = [
] }
[features]
default = ["layer_shell", "x11", "libei"]
layer_shell = [
default = ["wayland", "x11", "libei"]
wayland = [
"dep:wayland-client",
"dep:wayland-protocols",
"dep:wayland-protocols-wlr",

View File

@@ -8,7 +8,7 @@ use futures_core::Stream;
use input_event::PointerEvent;
use tokio::time::{self, Instant, Interval};
use super::{Capture, CaptureError, CaptureEvent, Position};
use super::{Capture, CaptureError, CaptureEvent, CaptureHandle, Position};
pub struct DummyInputCapture {
start: Option<Instant>,
@@ -34,11 +34,11 @@ impl Default for DummyInputCapture {
#[async_trait]
impl Capture for DummyInputCapture {
async fn create(&mut self, _pos: Position) -> Result<(), CaptureError> {
async fn create(&mut self, _handle: CaptureHandle, _pos: Position) -> Result<(), CaptureError> {
Ok(())
}
async fn destroy(&mut self, _pos: Position) -> Result<(), CaptureError> {
async fn destroy(&mut self, _handle: CaptureHandle) -> Result<(), CaptureError> {
Ok(())
}
@@ -55,7 +55,7 @@ const FREQUENCY_HZ: f64 = 1.0;
const RADIUS: f64 = 100.0;
impl Stream for DummyInputCapture {
type Item = Result<(Position, CaptureEvent), CaptureError>;
type Item = Result<(CaptureHandle, CaptureEvent), CaptureError>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
let current = ready!(self.interval.poll_tick(cx));
@@ -81,6 +81,6 @@ impl Stream for DummyInputCapture {
}))
}
};
Poll::Ready(Some(Ok((Position::Left, event))))
Poll::Ready(Some(Ok((0, event))))
}
}

View File

@@ -8,9 +8,9 @@ pub enum InputCaptureError {
Capture(#[from] CaptureError),
}
#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
use std::io;
#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
use wayland_client::{
backend::WaylandError,
globals::{BindError, GlobalError},
@@ -19,10 +19,26 @@ use wayland_client::{
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
use ashpd::desktop::ResponseError;
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
use reis::tokio::{EiConvertEventStreamError, HandshakeError};
#[cfg(target_os = "macos")]
use core_graphics::base::CGError;
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
#[derive(Debug, Error)]
#[error("error in libei stream: {inner:?}")]
pub struct ReisConvertEventStreamError {
inner: EiConvertEventStreamError,
}
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
impl From<EiConvertEventStreamError> for ReisConvertEventStreamError {
fn from(e: EiConvertEventStreamError) -> Self {
Self { inner: e }
}
}
#[derive(Debug, Error)]
pub enum CaptureError {
#[error("activation stream closed unexpectedly")]
@@ -32,8 +48,11 @@ pub enum CaptureError {
#[error("io error: `{0}`")]
Io(#[from] std::io::Error),
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
#[error("libei error: `{0}`")]
Reis(#[from] reis::Error),
#[error("error in libei stream: `{0}`")]
Reis(#[from] ReisConvertEventStreamError),
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
#[error("libei handshake failed: `{0}`")]
Handshake(#[from] HandshakeError),
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
#[error(transparent)]
Portal(#[from] ashpd::Error),
@@ -64,7 +83,7 @@ pub enum CaptureCreationError {
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
#[error("error creating input-capture-portal backend: `{0}`")]
Libei(#[from] LibeiCaptureCreationError),
#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
#[error("error creating layer-shell capture backend: `{0}`")]
LayerShell(#[from] LayerShellCaptureCreationError),
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
@@ -74,7 +93,7 @@ pub enum CaptureCreationError {
#[error("error creating windows capture backend")]
Windows,
#[cfg(target_os = "macos")]
#[error("error creating macos capture backend: `{0}`")]
#[error("error creating macos capture backend")]
MacOS(#[from] MacosCaptureCreationError),
}
@@ -102,7 +121,7 @@ pub enum LibeiCaptureCreationError {
Ashpd(#[from] ashpd::Error),
}
#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
#[derive(Debug, Error)]
#[error("{protocol} protocol not supported: {inner}")]
pub struct WaylandBindError {
@@ -110,14 +129,14 @@ pub struct WaylandBindError {
protocol: &'static str,
}
#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
impl WaylandBindError {
pub(crate) fn new(inner: BindError, protocol: &'static str) -> Self {
Self { inner, protocol }
}
}
#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
#[derive(Debug, Error)]
pub enum LayerShellCaptureCreationError {
#[error(transparent)]
@@ -146,9 +165,6 @@ pub enum X11InputCaptureCreationError {
pub enum MacosCaptureCreationError {
#[error("event source creation failed!")]
EventSourceCreation,
#[cfg(target_os = "macos")]
#[error("event tap creation failed")]
EventTapCreation,
#[error("failed to set CG Cursor property")]
CGCursorProperty,
#[cfg(target_os = "macos")]

View File

@@ -1,9 +1,4 @@
use std::{
collections::{HashMap, HashSet, VecDeque},
fmt::Display,
mem::swap,
task::{ready, Poll},
};
use std::{collections::HashSet, fmt::Display, task::Poll};
use async_trait::async_trait;
use futures::StreamExt;
@@ -21,8 +16,8 @@ mod libei;
#[cfg(target_os = "macos")]
mod macos;
#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
mod layer_shell;
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
mod wayland;
#[cfg(windows)]
mod windows;
@@ -87,7 +82,7 @@ impl Display for Position {
pub enum Backend {
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
InputCapturePortal,
#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
LayerShell,
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
X11,
@@ -103,7 +98,7 @@ impl Display for Backend {
match self {
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
Backend::InputCapturePortal => write!(f, "input-capture-portal"),
#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
Backend::LayerShell => write!(f, "layer-shell"),
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
Backend::X11 => write!(f, "X11"),
@@ -117,52 +112,19 @@ impl Display for Backend {
}
pub struct InputCapture {
/// capture backend
capture: Box<dyn Capture>,
/// keys pressed by active capture
pressed_keys: HashSet<scancode::Linux>,
/// map from position to ids
position_map: HashMap<Position, Vec<CaptureHandle>>,
/// map from id to position
id_map: HashMap<CaptureHandle, Position>,
/// pending events
pending: VecDeque<(CaptureHandle, CaptureEvent)>,
}
impl InputCapture {
/// create a new client with the given id
pub async fn create(&mut self, id: CaptureHandle, pos: Position) -> Result<(), CaptureError> {
assert!(!self.id_map.contains_key(&id));
self.id_map.insert(id, pos);
if let Some(v) = self.position_map.get_mut(&pos) {
v.push(id);
Ok(())
} else {
self.position_map.insert(pos, vec![id]);
self.capture.create(pos).await
}
self.capture.create(id, pos).await
}
/// destroy the client with the given id, if it exists
pub async fn destroy(&mut self, id: CaptureHandle) -> Result<(), CaptureError> {
let pos = self
.id_map
.remove(&id)
.expect("no position for this handle");
log::debug!("destroying capture {id} @ {pos}");
let remaining = self.position_map.get_mut(&pos).expect("id vector");
remaining.retain(|&i| i != id);
log::debug!("remaining ids @ {pos}: {remaining:?}");
if remaining.is_empty() {
log::debug!("destroying capture @ {pos} - no remaining ids");
self.position_map.remove(&pos);
self.capture.destroy(pos).await?;
}
Ok(())
self.capture.destroy(id).await
}
/// release mouse
@@ -181,9 +143,6 @@ impl InputCapture {
let capture = create(backend).await?;
Ok(Self {
capture,
id_map: Default::default(),
pending: Default::default(),
position_map: Default::default(),
pressed_keys: HashSet::new(),
})
}
@@ -201,6 +160,7 @@ impl InputCapture {
_ => self.pressed_keys.remove(&scancode),
};
}
log::info!("pressed keys: {:?}", self.pressed_keys);
}
}
@@ -211,65 +171,29 @@ impl Stream for InputCapture {
mut self: std::pin::Pin<&mut Self>,
cx: &mut std::task::Context<'_>,
) -> Poll<Option<Self::Item>> {
if let Some(e) = self.pending.pop_front() {
return Poll::Ready(Some(Ok(e)));
}
// ready
let event = ready!(self.capture.poll_next_unpin(cx));
// stream closed
let event = match event {
Some(e) => e,
None => return Poll::Ready(None),
};
// error occurred
let (pos, event) = match event {
Ok(e) => e,
Err(e) => return Poll::Ready(Some(Err(e))),
};
// handle key presses
if let CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Key { key, state, .. })) = event {
self.update_pressed_keys(key, state);
}
let len = self
.position_map
.get(&pos)
.map(|ids| ids.len())
.unwrap_or(0);
match len {
0 => Poll::Pending,
1 => Poll::Ready(Some(Ok((
self.position_map.get(&pos).expect("no id")[0],
event,
)))),
_ => {
let mut position_map = HashMap::new();
swap(&mut self.position_map, &mut position_map);
match self.capture.poll_next_unpin(cx) {
Poll::Ready(e) => {
if let Some(Ok((
_,
CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Key { key, state, .. })),
))) = e
{
for &id in position_map.get(&pos).expect("position") {
self.pending.push_back((id, event));
}
self.update_pressed_keys(key, state);
}
swap(&mut self.position_map, &mut position_map);
Poll::Ready(Some(Ok(self.pending.pop_front().expect("event"))))
Poll::Ready(e)
}
Poll::Pending => Poll::Pending,
}
}
}
#[async_trait]
trait Capture: Stream<Item = Result<(Position, CaptureEvent), CaptureError>> + Unpin {
trait Capture: Stream<Item = Result<(CaptureHandle, CaptureEvent), CaptureError>> + Unpin {
/// create a new client with the given id
async fn create(&mut self, pos: Position) -> Result<(), CaptureError>;
async fn create(&mut self, id: CaptureHandle, pos: Position) -> Result<(), CaptureError>;
/// destroy the client with the given id, if it exists
async fn destroy(&mut self, pos: Position) -> Result<(), CaptureError>;
async fn destroy(&mut self, id: CaptureHandle) -> Result<(), CaptureError>;
/// release mouse
async fn release(&mut self) -> Result<(), CaptureError>;
@@ -281,14 +205,14 @@ trait Capture: Stream<Item = Result<(Position, CaptureEvent), CaptureError>> + U
async fn create_backend(
backend: Backend,
) -> Result<
Box<dyn Capture<Item = Result<(Position, CaptureEvent), CaptureError>>>,
Box<dyn Capture<Item = Result<(CaptureHandle, CaptureEvent), CaptureError>>>,
CaptureCreationError,
> {
match backend {
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
Backend::InputCapturePortal => Ok(Box::new(libei::LibeiInputCapture::new().await?)),
#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
Backend::LayerShell => Ok(Box::new(layer_shell::LayerShellInputCapture::new()?)),
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
Backend::LayerShell => Ok(Box::new(wayland::WaylandInputCapture::new()?)),
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
Backend::X11 => Ok(Box::new(x11::X11InputCapture::new()?)),
#[cfg(windows)]
@@ -302,7 +226,7 @@ async fn create_backend(
async fn create(
backend: Option<Backend>,
) -> Result<
Box<dyn Capture<Item = Result<(Position, CaptureEvent), CaptureError>>>,
Box<dyn Capture<Item = Result<(CaptureHandle, CaptureEvent), CaptureError>>>,
CaptureCreationError,
> {
if let Some(backend) = backend {
@@ -316,7 +240,7 @@ async fn create(
for backend in [
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
Backend::InputCapturePortal,
#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
Backend::LayerShell,
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
Backend::X11,

View File

@@ -1,9 +1,6 @@
use ashpd::{
desktop::{
input_capture::{
Activated, ActivatedBarrier, Barrier, BarrierID, Capabilities, InputCapture, Region,
Zones,
},
input_capture::{Activated, Barrier, BarrierID, Capabilities, InputCapture, Region, Zones},
Session,
},
enumflags2::BitFlags,
@@ -11,15 +8,14 @@ use ashpd::{
use async_trait::async_trait;
use futures::{FutureExt, StreamExt};
use reis::{
ei::{self, handshake::ContextType},
event::{Connection, DeviceCapability, EiEvent},
tokio::EiConvertEventStream,
ei,
event::{DeviceCapability, EiEvent},
tokio::{EiConvertEventStream, EiEventStream},
};
use std::{
cell::Cell,
collections::HashMap,
io,
num::NonZeroU32,
os::unix::net::UnixStream,
pin::Pin,
rc::Rc,
@@ -36,14 +32,15 @@ use tokio::{
use tokio_util::sync::CancellationToken;
use futures_core::Stream;
use once_cell::sync::Lazy;
use input_event::Event;
use crate::CaptureEvent;
use super::{
error::{CaptureError, LibeiCaptureCreationError},
Capture as LanMouseInputCapture, Position,
error::{CaptureError, LibeiCaptureCreationError, ReisConvertEventStreamError},
Capture as LanMouseInputCapture, CaptureHandle, Position,
};
/* there is a bug in xdg-remote-desktop-portal-gnome / mutter that
@@ -53,21 +50,37 @@ use super::{
/// events that necessitate restarting the capture session
#[derive(Clone, Copy, Debug)]
enum LibeiNotifyEvent {
Create(Position),
Destroy(Position),
Create(CaptureHandle, Position),
Destroy(CaptureHandle),
}
#[allow(dead_code)]
pub struct LibeiInputCapture<'a> {
input_capture: Pin<Box<InputCapture<'a>>>,
capture_task: JoinHandle<Result<(), CaptureError>>,
event_rx: Receiver<(Position, CaptureEvent)>,
event_rx: Receiver<(CaptureHandle, CaptureEvent)>,
notify_capture: Sender<LibeiNotifyEvent>,
notify_release: Arc<Notify>,
cancellation_token: CancellationToken,
terminated: bool,
}
static INTERFACES: Lazy<HashMap<&'static str, u32>> = Lazy::new(|| {
let mut m = HashMap::new();
m.insert("ei_connection", 1);
m.insert("ei_callback", 1);
m.insert("ei_pingpong", 1);
m.insert("ei_seat", 1);
m.insert("ei_device", 2);
m.insert("ei_pointer", 1);
m.insert("ei_pointer_absolute", 1);
m.insert("ei_scroll", 1);
m.insert("ei_button", 1);
m.insert("ei_keyboard", 1);
m.insert("ei_touchscreen", 1);
m
});
/// returns (start pos, end pos), inclusive
fn pos_to_barrier(r: &Region, pos: Position) -> (i32, i32, i32, i32) {
let (x, y) = (r.x_offset(), r.y_offset());
@@ -104,37 +117,35 @@ impl From<ICBarrier> for Barrier {
fn select_barriers(
zones: &Zones,
clients: &[Position],
next_barrier_id: &mut NonZeroU32,
) -> (Vec<ICBarrier>, HashMap<BarrierID, Position>) {
let mut pos_for_barrier = HashMap::new();
clients: &[(CaptureHandle, Position)],
next_barrier_id: &mut u32,
) -> (Vec<ICBarrier>, HashMap<BarrierID, CaptureHandle>) {
let mut client_for_barrier = HashMap::new();
let mut barriers: Vec<ICBarrier> = vec![];
for pos in clients {
for (handle, pos) in clients {
let mut client_barriers = zones
.regions()
.iter()
.map(|r| {
let id = *next_barrier_id;
*next_barrier_id = next_barrier_id
.checked_add(1)
.expect("barrier id out of range");
*next_barrier_id = id + 1;
let position = pos_to_barrier(r, *pos);
pos_for_barrier.insert(id, *pos);
client_for_barrier.insert(id, *handle);
ICBarrier::new(id, position)
})
.collect();
barriers.append(&mut client_barriers);
}
(barriers, pos_for_barrier)
(barriers, client_for_barrier)
}
async fn update_barriers(
input_capture: &InputCapture<'_>,
session: &Session<'_, InputCapture<'_>>,
active_clients: &[Position],
next_barrier_id: &mut NonZeroU32,
) -> Result<(Vec<ICBarrier>, HashMap<BarrierID, Position>), ashpd::Error> {
active_clients: &[(CaptureHandle, Position)],
next_barrier_id: &mut u32,
) -> Result<(Vec<ICBarrier>, HashMap<BarrierID, CaptureHandle>), ashpd::Error> {
let zones = input_capture.zones(session).await?.response()?;
log::debug!("zones: {zones:?}");
@@ -153,11 +164,11 @@ async fn update_barriers(
async fn create_session<'a>(
input_capture: &'a InputCapture<'a>,
) -> std::result::Result<(Session<'a, InputCapture<'a>>, BitFlags<Capabilities>), ashpd::Error> {
) -> std::result::Result<(Session<'_, InputCapture<'_>>, BitFlags<Capabilities>), ashpd::Error> {
log::debug!("creating input capture session");
input_capture
.create_session(
None,
&ashpd::WindowIdentifier::default(),
Capabilities::Keyboard | Capabilities::Pointer | Capabilities::Touchscreen,
)
.await
@@ -166,7 +177,7 @@ async fn create_session<'a>(
async fn connect_to_eis(
input_capture: &InputCapture<'_>,
session: &Session<'_, InputCapture<'_>>,
) -> Result<(ei::Context, Connection, EiConvertEventStream), CaptureError> {
) -> Result<(ei::Context, EiConvertEventStream), CaptureError> {
log::debug!("connect_to_eis");
let fd = input_capture.connect_to_eis(session).await?;
@@ -176,32 +187,39 @@ async fn connect_to_eis(
// create ei context
let context = ei::Context::new(stream)?;
let (conn, event_stream) = context
.handshake_tokio("de.feschber.LanMouse", ContextType::Receiver)
.await?;
let mut event_stream = EiEventStream::new(context.clone())?;
let response = reis::tokio::ei_handshake(
&mut event_stream,
"de.feschber.LanMouse",
ei::handshake::ContextType::Receiver,
&INTERFACES,
)
.await?;
let event_stream = EiConvertEventStream::new(event_stream, response.serial);
Ok((context, conn, event_stream))
Ok((context, event_stream))
}
async fn libei_event_handler(
mut ei_event_stream: EiConvertEventStream,
context: ei::Context,
event_tx: Sender<(Position, CaptureEvent)>,
event_tx: Sender<(CaptureHandle, CaptureEvent)>,
release_session: Arc<Notify>,
current_pos: Rc<Cell<Option<Position>>>,
current_client: Rc<Cell<Option<CaptureHandle>>>,
) -> Result<(), CaptureError> {
loop {
let ei_event = ei_event_stream
.next()
.await
.ok_or(CaptureError::EndOfStream)??;
.ok_or(CaptureError::EndOfStream)?
.map_err(ReisConvertEventStreamError::from)?;
log::trace!("from ei: {ei_event:?}");
let client = current_pos.get();
let client = current_client.get();
handle_ei_event(ei_event, client, &context, &event_tx, &release_session).await?;
}
}
impl LibeiInputCapture<'_> {
impl<'a> LibeiInputCapture<'a> {
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>;
@@ -242,15 +260,15 @@ async fn do_capture(
mut capture_event: Receiver<LibeiNotifyEvent>,
notify_release: Arc<Notify>,
session: Option<(Session<'_, InputCapture<'_>>, BitFlags<Capabilities>)>,
event_tx: Sender<(Position, CaptureEvent)>,
event_tx: Sender<(CaptureHandle, CaptureEvent)>,
cancellation_token: CancellationToken,
) -> Result<(), CaptureError> {
let mut session = session.map(|s| s.0);
/* safety: libei_task does not outlive Self */
let input_capture = unsafe { &*input_capture };
let mut active_clients: Vec<Position> = vec![];
let mut next_barrier_id = NonZeroU32::new(1).expect("id must be non-zero");
let mut active_clients: Vec<(CaptureHandle, Position)> = vec![];
let mut next_barrier_id = 1u32;
let mut zones_changed = input_capture.receive_zones_changed().await?;
@@ -323,8 +341,8 @@ async fn do_capture(
// update clients if requested
if let Some(event) = capture_event_occured.take() {
match event {
LibeiNotifyEvent::Create(p) => active_clients.push(p),
LibeiNotifyEvent::Destroy(p) => active_clients.retain(|&pos| pos != p),
LibeiNotifyEvent::Create(c, p) => active_clients.push((c, p)),
LibeiNotifyEvent::Destroy(c) => active_clients.retain(|(h, _)| *h != c),
}
}
@@ -338,21 +356,21 @@ async fn do_capture(
async fn do_capture_session(
input_capture: &InputCapture<'_>,
session: &mut Session<'_, InputCapture<'_>>,
event_tx: &Sender<(Position, CaptureEvent)>,
active_clients: &[Position],
next_barrier_id: &mut NonZeroU32,
event_tx: &Sender<(CaptureHandle, CaptureEvent)>,
active_clients: &[(CaptureHandle, Position)],
next_barrier_id: &mut u32,
notify_release: &Notify,
cancel: (CancellationToken, CancellationToken),
) -> Result<(), CaptureError> {
let (cancel_session, cancel_update) = cancel;
// current client
let current_pos = Rc::new(Cell::new(None));
let current_client = Rc::new(Cell::new(None));
// connect to eis server
let (context, _conn, ei_event_stream) = connect_to_eis(input_capture, session).await?;
let (context, ei_event_stream) = connect_to_eis(input_capture, session).await?;
// set barriers
let (barriers, pos_for_barrier_id) =
let (barriers, client_for_barrier_id) =
update_barriers(input_capture, session, active_clients, next_barrier_id).await?;
log::debug!("enabling session");
@@ -364,7 +382,7 @@ async fn do_capture_session(
// async event task
let cancel_ei_handler = CancellationToken::new();
let event_chan = event_tx.clone();
let pos = current_pos.clone();
let client = current_client.clone();
let cancel_session_clone = cancel_session.clone();
let release_session_clone = release_session.clone();
let cancel_ei_handler_clone = cancel_ei_handler.clone();
@@ -375,7 +393,7 @@ async fn do_capture_session(
context,
event_chan,
release_session_clone,
pos,
client,
) => {
log::debug!("libei exited: {r:?} cancelling session task");
cancel_session_clone.cancel();
@@ -397,17 +415,17 @@ async fn do_capture_session(
// get barrier id from activation
let barrier_id = match activated.barrier_id() {
Some(ActivatedBarrier::Barrier(id)) => id,
Some(bid) => bid,
// workaround for KDE plasma not reporting barrier ids
Some(ActivatedBarrier::UnknownBarrier) | None => find_corresponding_client(&barriers, activated.cursor_position().expect("no cursor position reported by compositor")),
None => find_corresponding_client(&barriers, activated.cursor_position().expect("no cursor position reported by compositor")),
};
// find client corresponding to barrier
let pos = *pos_for_barrier_id.get(&barrier_id).expect("invalid barrier id");
current_pos.replace(Some(pos));
let client = *client_for_barrier_id.get(&barrier_id).expect("invalid barrier id");
current_client.replace(Some(client));
// client entered => send event
event_tx.send((pos, CaptureEvent::Begin)).await.expect("no channel");
event_tx.send((client, CaptureEvent::Begin)).await.expect("no channel");
tokio::select! {
_ = notify_release.notified() => { /* capture release */
@@ -423,7 +441,7 @@ async fn do_capture_session(
},
}
release_capture(input_capture, session, activated, pos).await?;
release_capture(input_capture, session, activated, client, active_clients).await?;
}
_ = notify_release.notified() => { /* capture release -> we are not capturing anyway, so ignore */
@@ -466,7 +484,8 @@ async fn release_capture<'a>(
input_capture: &InputCapture<'a>,
session: &Session<'a, InputCapture<'a>>,
activated: Activated,
current_pos: Position,
current_client: CaptureHandle,
active_clients: &[(CaptureHandle, Position)],
) -> Result<(), CaptureError> {
if let Some(activation_id) = activated.activation_id() {
log::debug!("releasing input capture {activation_id}");
@@ -475,7 +494,13 @@ async fn release_capture<'a>(
.cursor_position()
.expect("compositor did not report cursor position!");
log::debug!("client entered @ ({x}, {y})");
let (dx, dy) = match current_pos {
let pos = active_clients
.iter()
.filter(|(c, _)| *c == current_client)
.map(|(_, p)| p)
.next()
.unwrap(); // FIXME
let (dx, dy) = match pos {
// offset cursor position to not enter again immediately
Position::Left => (1., 0.),
Position::Right => (-1., 0.),
@@ -529,9 +554,9 @@ static ALL_CAPABILITIES: &[DeviceCapability] = &[
async fn handle_ei_event(
ei_event: EiEvent,
current_client: Option<Position>,
current_client: Option<CaptureHandle>,
context: &ei::Context,
event_tx: &Sender<(Position, CaptureEvent)>,
event_tx: &Sender<(CaptureHandle, CaptureEvent)>,
release_session: &Notify,
) -> Result<(), CaptureError> {
match ei_event {
@@ -550,9 +575,9 @@ async fn handle_ei_event(
return Err(CaptureError::Disconnected(format!("{:?}", d.reason)))
}
_ => {
if let Some(pos) = current_client {
if let Some(handle) = current_client {
for event in Event::from_ei_event(ei_event) {
event_tx.send((pos, CaptureEvent::Input(event))).await.expect("no channel");
event_tx.send((handle, CaptureEvent::Input(event))).await.expect("no channel");
}
}
}
@@ -561,19 +586,19 @@ async fn handle_ei_event(
}
#[async_trait]
impl LanMouseInputCapture for LibeiInputCapture<'_> {
async fn create(&mut self, pos: Position) -> Result<(), CaptureError> {
impl<'a> LanMouseInputCapture for LibeiInputCapture<'a> {
async fn create(&mut self, handle: CaptureHandle, pos: Position) -> Result<(), CaptureError> {
let _ = self
.notify_capture
.send(LibeiNotifyEvent::Create(pos))
.send(LibeiNotifyEvent::Create(handle, pos))
.await;
Ok(())
}
async fn destroy(&mut self, pos: Position) -> Result<(), CaptureError> {
async fn destroy(&mut self, handle: CaptureHandle) -> Result<(), CaptureError> {
let _ = self
.notify_capture
.send(LibeiNotifyEvent::Destroy(pos))
.send(LibeiNotifyEvent::Destroy(handle))
.await;
Ok(())
}
@@ -594,7 +619,7 @@ impl LanMouseInputCapture for LibeiInputCapture<'_> {
}
}
impl Drop for LibeiInputCapture<'_> {
impl<'a> Drop for LibeiInputCapture<'a> {
fn drop(&mut self) {
if !self.terminated {
/* this workaround is needed until async drop is stabilized */
@@ -603,8 +628,8 @@ impl Drop for LibeiInputCapture<'_> {
}
}
impl Stream for LibeiInputCapture<'_> {
type Item = Result<(Position, CaptureEvent), CaptureError>;
impl<'a> Stream for LibeiInputCapture<'a> {
type Item = Result<(CaptureHandle, CaptureEvent), CaptureError>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
match self.capture_task.poll_unpin(cx) {

View File

@@ -1,4 +1,6 @@
use super::{error::MacosCaptureCreationError, Capture, CaptureError, CaptureEvent, Position};
use super::{
error::MacosCaptureCreationError, Capture, CaptureError, CaptureEvent, CaptureHandle, Position,
};
use async_trait::async_trait;
use bitflags::bitflags;
use core_foundation::base::{kCFAllocatorDefault, CFRelease};
@@ -18,14 +20,14 @@ use input_event::{Event, KeyboardEvent, PointerEvent, BTN_LEFT, BTN_MIDDLE, BTN_
use keycode::{KeyMap, KeyMapping};
use libc::c_void;
use once_cell::unsync::Lazy;
use std::collections::HashSet;
use std::collections::HashMap;
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 tokio::sync::mpsc::{Receiver, Sender};
use tokio::sync::Mutex;
#[derive(Debug, Default)]
struct Bounds {
@@ -37,44 +39,44 @@ struct Bounds {
#[derive(Debug)]
struct InputCaptureState {
active_clients: Lazy<HashSet<Position>>,
current_pos: Option<Position>,
client_for_pos: Lazy<HashMap<Position, CaptureHandle>>,
current_client: Option<(CaptureHandle, Position)>,
bounds: Bounds,
}
#[derive(Debug)]
enum ProducerEvent {
Release,
Create(Position),
Destroy(Position),
Grab(Position),
Create(CaptureHandle, Position),
Destroy(CaptureHandle),
Grab((CaptureHandle, Position)),
EventTapDisabled,
}
impl InputCaptureState {
fn new() -> Result<Self, MacosCaptureCreationError> {
let mut res = Self {
active_clients: Lazy::new(HashSet::new),
current_pos: None,
client_for_pos: Lazy::new(HashMap::new),
current_client: None,
bounds: Bounds::default(),
};
res.update_bounds()?;
Ok(res)
}
fn crossed(&mut self, event: &CGEvent) -> Option<Position> {
fn crossed(&mut self, event: &CGEvent) -> Option<(CaptureHandle, Position)> {
let location = event.location();
let relative_x = event.get_double_value_field(EventField::MOUSE_EVENT_DELTA_X);
let relative_y = event.get_double_value_field(EventField::MOUSE_EVENT_DELTA_Y);
for &position in self.active_clients.iter() {
if (position == Position::Left && (location.x + relative_x) <= self.bounds.xmin)
|| (position == Position::Right && (location.x + relative_x) >= self.bounds.xmax)
|| (position == Position::Top && (location.y + relative_y) <= self.bounds.ymin)
|| (position == Position::Bottom && (location.y + relative_y) >= self.bounds.ymax)
for (position, client) in self.client_for_pos.iter() {
if (position == &Position::Left && (location.x + relative_x) <= self.bounds.xmin)
|| (position == &Position::Right && (location.x + relative_x) >= self.bounds.xmax)
|| (position == &Position::Top && (location.y + relative_y) <= self.bounds.ymin)
|| (position == &Position::Bottom && (location.y + relative_y) >= self.bounds.ymax)
{
log::debug!("Crossed barrier into position: {position:?}");
return Some(position);
log::debug!("Crossed barrier into client: {client}, {position:?}");
return Some((*client, *position));
}
}
None
@@ -100,7 +102,7 @@ impl InputCaptureState {
// 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 {
if let Some((_, pos)) = self.current_client {
let location = event.location();
let edge_offset = 1.0;
@@ -144,31 +146,40 @@ impl InputCaptureState {
log::debug!("handling event: {producer_event:?}");
match producer_event {
ProducerEvent::Release => {
if self.current_pos.is_some() {
if self.current_client.is_some() {
CGDisplay::show_cursor(&CGDisplay::main())
.map_err(CaptureError::CoreGraphics)?;
self.current_pos = None;
self.current_client = None;
}
}
ProducerEvent::Grab(pos) => {
if self.current_pos.is_none() {
ProducerEvent::Grab(client) => {
if self.current_client.is_none() {
CGDisplay::hide_cursor(&CGDisplay::main())
.map_err(CaptureError::CoreGraphics)?;
self.current_pos = Some(pos);
self.current_client = Some(client);
}
}
ProducerEvent::Create(p) => {
self.active_clients.insert(p);
ProducerEvent::Create(c, p) => {
self.client_for_pos.insert(p, c);
}
ProducerEvent::Destroy(p) => {
if let Some(current) = self.current_pos {
if current == p {
CGDisplay::show_cursor(&CGDisplay::main())
.map_err(CaptureError::CoreGraphics)?;
self.current_pos = None;
};
ProducerEvent::Destroy(c) => {
for pos in [
Position::Left,
Position::Right,
Position::Top,
Position::Bottom,
] {
if let Some((current_c, _)) = self.current_client {
if current_c == c {
CGDisplay::show_cursor(&CGDisplay::main())
.map_err(CaptureError::CoreGraphics)?;
self.current_client = None;
};
}
if self.client_for_pos.get(&pos).copied() == Some(c) {
self.client_for_pos.remove(&pos);
}
}
self.active_clients.remove(&p);
}
ProducerEvent::EventTapDisabled => return Err(CaptureError::EventTapDisabled),
};
@@ -322,11 +333,12 @@ fn get_events(
Ok(())
}
fn create_event_tap<'a>(
fn event_tap_thread(
client_state: Arc<Mutex<InputCaptureState>>,
event_tx: Sender<(CaptureHandle, CaptureEvent)>,
notify_tx: Sender<ProducerEvent>,
event_tx: Sender<(Position, CaptureEvent)>,
) -> Result<CGEventTap<'a>, MacosCaptureCreationError> {
exit: tokio::sync::oneshot::Sender<Result<(), &'static str>>,
) {
let cg_events_of_interest: Vec<CGEventType> = vec![
CGEventType::LeftMouseDown,
CGEventType::LeftMouseUp,
@@ -344,11 +356,15 @@ fn create_event_tap<'a>(
CGEventType::FlagsChanged,
];
let event_tap_callback =
move |_proxy: CGEventTapProxy, event_type: CGEventType, cg_ev: &CGEvent| {
let tap = CGEventTap::new(
CGEventTapLocation::Session,
CGEventTapPlacement::HeadInsertEventTap,
CGEventTapOptions::Default,
cg_events_of_interest,
|_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 client = None;
let mut res_events = vec![];
if matches!(
@@ -364,8 +380,8 @@ fn create_event_tap<'a>(
}
// Are we in a client?
if let Some(current_pos) = state.current_pos {
pos = Some(current_pos);
if let Some((current_client, _)) = state.current_client {
client = Some(current_client);
get_events(&event_type, cg_ev, &mut res_events).unwrap_or_else(|e| {
log::error!("Failed to get events: {e}");
});
@@ -379,19 +395,19 @@ fn create_event_tap<'a>(
}
// Did we cross a barrier?
else if matches!(event_type, CGEventType::MouseMoved) {
if let Some(new_pos) = state.crossed(cg_ev) {
pos = Some(new_pos);
if let Some((new_client, pos)) = state.crossed(cg_ev) {
client = Some(new_client);
res_events.push(CaptureEvent::Begin);
notify_tx
.blocking_send(ProducerEvent::Grab(new_pos))
.blocking_send(ProducerEvent::Grab((new_client, pos)))
.expect("Failed to send notification");
}
}
if let Some(pos) = pos {
if let Some(client) = client {
res_events.iter().for_each(|e| {
event_tx
.blocking_send((pos, *e))
.blocking_send((client, *e))
.expect("Failed to send event");
});
// Returning None should stop the event from being processed
@@ -399,16 +415,9 @@ fn create_event_tap<'a>(
cg_ev.set_type(CGEventType::Null);
}
Some(cg_ev.to_owned())
};
let tap = CGEventTap::new(
CGEventTapLocation::Session,
CGEventTapPlacement::HeadInsertEventTap,
CGEventTapOptions::Default,
cg_events_of_interest,
event_tap_callback,
},
)
.map_err(|_| MacosCaptureCreationError::EventTapCreation)?;
.expect("Failed creating tap");
let tap_source: CFRunLoopSource = tap
.mach_port
@@ -419,43 +428,22 @@ fn create_event_tap<'a>(
CFRunLoop::get_current().add_source(&tap_source, kCFRunLoopCommonModes);
}
Ok(tap)
}
fn event_tap_thread(
client_state: Arc<Mutex<InputCaptureState>>,
event_tx: Sender<(Position, CaptureEvent)>,
notify_tx: Sender<ProducerEvent>,
ready: std::sync::mpsc::Sender<Result<(), MacosCaptureCreationError>>,
exit: oneshot::Sender<Result<(), &'static str>>,
) {
let _tap = match create_event_tap(client_state, notify_tx, event_tx) {
Err(e) => {
ready.send(Err(e)).expect("channel closed");
return;
}
Ok(tap) => {
ready.send(Ok(())).expect("channel closed");
tap
}
};
CFRunLoop::run_current();
let _ = exit.send(Err("tap thread exited"));
}
pub struct MacOSInputCapture {
event_rx: Receiver<(Position, CaptureEvent)>,
event_rx: Receiver<(CaptureHandle, CaptureEvent)>,
notify_tx: Sender<ProducerEvent>,
}
impl MacOSInputCapture {
pub async fn new() -> Result<Self, MacosCaptureCreationError> {
let state = Arc::new(Mutex::new(InputCaptureState::new()?));
let (event_tx, event_rx) = mpsc::channel(32);
let (notify_tx, mut notify_rx) = mpsc::channel(32);
let (ready_tx, ready_rx) = std::sync::mpsc::channel();
let (tap_exit_tx, mut tap_exit_rx) = oneshot::channel();
let (event_tx, event_rx) = tokio::sync::mpsc::channel(32);
let (notify_tx, mut notify_rx) = tokio::sync::mpsc::channel(32);
let (tap_exit_tx, mut tap_exit_rx) = tokio::sync::oneshot::channel();
unsafe {
configure_cf_settings()?;
@@ -469,14 +457,10 @@ impl MacOSInputCapture {
event_tap_thread_state,
event_tx,
event_tap_notify,
ready_tx,
tap_exit_tx,
)
});
// wait for event tap creation result
ready_rx.recv().expect("channel closed")?;
let _tap_task: tokio::task::JoinHandle<()> = tokio::task::spawn_local(async move {
loop {
tokio::select! {
@@ -507,21 +491,21 @@ impl MacOSInputCapture {
#[async_trait]
impl Capture for MacOSInputCapture {
async fn create(&mut self, pos: Position) -> Result<(), CaptureError> {
async fn create(&mut self, id: CaptureHandle, pos: Position) -> Result<(), CaptureError> {
let notify_tx = self.notify_tx.clone();
tokio::task::spawn_local(async move {
log::debug!("creating capture, {pos}");
let _ = notify_tx.send(ProducerEvent::Create(pos)).await;
log::debug!("creating client {id}, {pos}");
let _ = notify_tx.send(ProducerEvent::Create(id, pos)).await;
log::debug!("done !");
});
Ok(())
}
async fn destroy(&mut self, pos: Position) -> Result<(), CaptureError> {
async fn destroy(&mut self, id: CaptureHandle) -> Result<(), CaptureError> {
let notify_tx = self.notify_tx.clone();
tokio::task::spawn_local(async move {
log::debug!("destroying capture {pos}");
let _ = notify_tx.send(ProducerEvent::Destroy(pos)).await;
log::debug!("destroying client {id}");
let _ = notify_tx.send(ProducerEvent::Destroy(id)).await;
log::debug!("done !");
});
Ok(())
@@ -542,7 +526,7 @@ impl Capture for MacOSInputCapture {
}
impl Stream for MacOSInputCapture {
type Item = Result<(Position, CaptureEvent), CaptureError>;
type Item = Result<(CaptureHandle, CaptureEvent), CaptureError>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
match ready!(self.event_rx.poll_recv(cx)) {

View File

@@ -64,7 +64,7 @@ use crate::{CaptureError, CaptureEvent};
use super::{
error::{LayerShellCaptureCreationError, WaylandBindError},
Capture, Position,
Capture, CaptureHandle, Position,
};
struct Globals {
@@ -102,13 +102,13 @@ struct State {
pointer_lock: Option<ZwpLockedPointerV1>,
rel_pointer: Option<ZwpRelativePointerV1>,
shortcut_inhibitor: Option<ZwpKeyboardShortcutsInhibitorV1>,
active_windows: Vec<Arc<Window>>,
focused: Option<Arc<Window>>,
client_for_window: Vec<(Arc<Window>, CaptureHandle)>,
focused: Option<(Arc<Window>, CaptureHandle)>,
g: Globals,
wayland_fd: RawFd,
read_guard: Option<ReadEventsGuard>,
qh: QueueHandle<Self>,
pending_events: VecDeque<(Position, CaptureEvent)>,
pending_events: VecDeque<(CaptureHandle, CaptureEvent)>,
output_info: Vec<(WlOutput, OutputInfo)>,
scroll_discrete_pending: bool,
}
@@ -124,7 +124,7 @@ impl AsRawFd for Inner {
}
}
pub struct LayerShellInputCapture(AsyncFd<Inner>);
pub struct WaylandInputCapture(AsyncFd<Inner>);
struct Window {
buffer: wl_buffer::WlBuffer,
@@ -256,7 +256,7 @@ fn draw(f: &mut File, (width, height): (u32, u32)) {
}
}
impl LayerShellInputCapture {
impl WaylandInputCapture {
pub fn new() -> std::result::Result<Self, LayerShellCaptureCreationError> {
let conn = Connection::connect_to_env()?;
let (g, mut queue) = registry_queue_init::<State>(&conn)?;
@@ -323,7 +323,7 @@ impl LayerShellInputCapture {
pointer_lock: None,
rel_pointer: None,
shortcut_inhibitor: None,
active_windows: Vec::new(),
client_for_window: Vec::new(),
focused: None,
qh,
wayland_fd,
@@ -370,18 +370,23 @@ impl LayerShellInputCapture {
let inner = AsyncFd::new(Inner { queue, state })?;
Ok(LayerShellInputCapture(inner))
Ok(WaylandInputCapture(inner))
}
fn add_client(&mut self, pos: Position) {
self.0.get_mut().state.add_client(pos);
fn add_client(&mut self, handle: CaptureHandle, pos: Position) {
self.0.get_mut().state.add_client(handle, pos);
}
fn delete_client(&mut self, pos: Position) {
fn delete_client(&mut self, handle: CaptureHandle) {
let inner = self.0.get_mut();
// remove all windows corresponding to this client
while let Some(i) = inner.state.active_windows.iter().position(|w| w.pos == pos) {
inner.state.active_windows.remove(i);
while let Some(i) = inner
.state
.client_for_window
.iter()
.position(|(_, c)| *c == handle)
{
inner.state.client_for_window.remove(i);
inner.state.focused = None;
}
}
@@ -395,7 +400,7 @@ impl State {
serial: u32,
qh: &QueueHandle<State>,
) {
let window = self.focused.as_ref().unwrap();
let (window, _) = self.focused.as_ref().unwrap();
// hide the cursor
pointer.set_cursor(serial, None, 0, 0);
@@ -438,7 +443,7 @@ impl State {
fn ungrab(&mut self) {
// get focused client
let window = match self.focused.as_ref() {
let (window, _client) = match self.focused.as_ref() {
Some(focused) => focused,
None => return,
};
@@ -468,23 +473,27 @@ impl State {
}
}
fn add_client(&mut self, pos: Position) {
fn add_client(&mut self, client: CaptureHandle, pos: Position) {
let outputs = get_output_configuration(self, pos);
log::debug!("outputs: {outputs:?}");
outputs.iter().for_each(|(o, i)| {
let window = Window::new(self, &self.qh, o, pos, i.size);
let window = Arc::new(window);
self.active_windows.push(window);
self.client_for_window.push((window, client));
});
}
fn update_windows(&mut self) {
log::debug!("updating windows");
log::debug!("output info: {:?}", self.output_info);
let clients: Vec<_> = self.active_windows.drain(..).map(|w| w.pos).collect();
for pos in clients {
self.add_client(pos);
let clients: Vec<_> = self
.client_for_window
.drain(..)
.map(|(w, c)| (c, w.pos))
.collect();
for (client, pos) in clients {
self.add_client(client, pos);
}
}
}
@@ -557,15 +566,15 @@ impl Inner {
}
#[async_trait]
impl Capture for LayerShellInputCapture {
async fn create(&mut self, pos: Position) -> Result<(), CaptureError> {
self.add_client(pos);
impl Capture for WaylandInputCapture {
async fn create(&mut self, handle: CaptureHandle, pos: Position) -> Result<(), CaptureError> {
self.add_client(handle, pos);
let inner = self.0.get_mut();
Ok(inner.flush_events()?)
}
async fn destroy(&mut self, pos: Position) -> Result<(), CaptureError> {
self.delete_client(pos);
async fn destroy(&mut self, handle: CaptureHandle) -> Result<(), CaptureError> {
self.delete_client(handle);
let inner = self.0.get_mut();
Ok(inner.flush_events()?)
}
@@ -582,8 +591,8 @@ impl Capture for LayerShellInputCapture {
}
}
impl Stream for LayerShellInputCapture {
type Item = Result<(Position, CaptureEvent), CaptureError>;
impl Stream for WaylandInputCapture {
type Item = Result<(CaptureHandle, CaptureEvent), CaptureError>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
if let Some(event) = self.0.get_mut().state.pending_events.pop_front() {
@@ -648,16 +657,10 @@ impl Dispatch<wl_seat::WlSeat, ()> for State {
capabilities: WEnum::Value(capabilities),
} = event
{
if capabilities.contains(wl_seat::Capability::Pointer) {
if let Some(p) = state.pointer.take() {
p.release();
}
if capabilities.contains(wl_seat::Capability::Pointer) && state.pointer.is_none() {
state.pointer.replace(seat.get_pointer(qh, ()));
}
if capabilities.contains(wl_seat::Capability::Keyboard) {
if let Some(k) = state.keyboard.take() {
k.release();
}
if capabilities.contains(wl_seat::Capability::Keyboard) && state.keyboard.is_none() {
seat.get_keyboard(qh, ());
}
}
@@ -682,20 +685,23 @@ impl Dispatch<WlPointer, ()> for State {
} => {
// get client corresponding to the focused surface
{
if let Some(window) = app.active_windows.iter().find(|w| w.surface == surface) {
app.focused = Some(window.clone());
if let Some((window, client)) = app
.client_for_window
.iter()
.find(|(w, _c)| w.surface == surface)
{
app.focused = Some((window.clone(), *client));
app.grab(&surface, pointer, serial, qh);
} else {
return;
}
}
let pos = app
.active_windows
let (_, client) = app
.client_for_window
.iter()
.find(|w| w.surface == surface)
.map(|w| w.pos)
.find(|(w, _c)| w.surface == surface)
.unwrap();
app.pending_events.push_back((pos, CaptureEvent::Begin));
app.pending_events.push_back((*client, CaptureEvent::Begin));
}
wl_pointer::Event::Leave { .. } => {
/* There are rare cases, where when a window is opened in
@@ -716,9 +722,9 @@ impl Dispatch<WlPointer, ()> for State {
button,
state,
} => {
let window = app.focused.as_ref().unwrap();
let (_, client) = app.focused.as_ref().unwrap();
app.pending_events.push_back((
window.pos,
*client,
CaptureEvent::Input(Event::Pointer(PointerEvent::Button {
time,
button,
@@ -727,7 +733,7 @@ impl Dispatch<WlPointer, ()> for State {
));
}
wl_pointer::Event::Axis { time, axis, value } => {
let window = app.focused.as_ref().unwrap();
let (_, client) = app.focused.as_ref().unwrap();
if app.scroll_discrete_pending {
// each axisvalue120 event is coupled with
// a corresponding axis event, which needs to
@@ -735,7 +741,7 @@ impl Dispatch<WlPointer, ()> for State {
app.scroll_discrete_pending = false;
} else {
app.pending_events.push_back((
window.pos,
*client,
CaptureEvent::Input(Event::Pointer(PointerEvent::Axis {
time,
axis: u32::from(axis) as u8,
@@ -745,10 +751,10 @@ impl Dispatch<WlPointer, ()> for State {
}
}
wl_pointer::Event::AxisValue120 { axis, value120 } => {
let window = app.focused.as_ref().unwrap();
let (_, client) = app.focused.as_ref().unwrap();
app.scroll_discrete_pending = true;
app.pending_events.push_back((
window.pos,
*client,
CaptureEvent::Input(Event::Pointer(PointerEvent::AxisDiscrete120 {
axis: u32::from(axis) as u8,
value: value120,
@@ -774,7 +780,10 @@ impl Dispatch<WlKeyboard, ()> for State {
_: &Connection,
_: &QueueHandle<Self>,
) {
let window = &app.focused;
let (_window, client) = match &app.focused {
Some(focused) => (Some(&focused.0), Some(&focused.1)),
None => (None, None),
};
match event {
wl_keyboard::Event::Key {
serial: _,
@@ -782,9 +791,9 @@ impl Dispatch<WlKeyboard, ()> for State {
key,
state,
} => {
if let Some(window) = window {
if let Some(client) = client {
app.pending_events.push_back((
window.pos,
*client,
CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Key {
time,
key,
@@ -800,9 +809,9 @@ impl Dispatch<WlKeyboard, ()> for State {
mods_locked,
group,
} => {
if let Some(window) = window {
if let Some(client) = client {
app.pending_events.push_back((
window.pos,
*client,
CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Modifiers {
depressed: mods_depressed,
latched: mods_latched,
@@ -834,10 +843,10 @@ impl Dispatch<ZwpRelativePointerV1, ()> for State {
..
} = event
{
if let Some(window) = &app.focused {
if let Some((_window, client)) = &app.focused {
let time = (((utime_hi as u64) << 32 | utime_lo as u64) / 1000) as u32;
app.pending_events.push_back((
window.pos,
*client,
CaptureEvent::Input(Event::Pointer(PointerEvent::Motion { time, dx, dy })),
));
}
@@ -855,10 +864,10 @@ impl Dispatch<ZwlrLayerSurfaceV1, ()> for State {
_: &QueueHandle<Self>,
) {
if let zwlr_layer_surface_v1::Event::Configure { serial, .. } = event {
if let Some(window) = app
.active_windows
if let Some((window, _client)) = app
.client_for_window
.iter()
.find(|w| &w.layer_surface == layer_surface)
.find(|(w, _c)| &w.layer_surface == layer_surface)
{
// client corresponding to the layer_surface
let surface = &window.surface;

View File

@@ -1,36 +1,94 @@
use async_trait::async_trait;
use core::task::{Context, Poll};
use event_thread::EventThread;
use futures::Stream;
use std::pin::Pin;
use once_cell::unsync::Lazy;
use std::collections::HashMap;
use std::ptr::{addr_of, addr_of_mut};
use futures::executor::block_on;
use std::default::Default;
use std::sync::atomic::{AtomicU32, Ordering};
use std::sync::{mpsc, Mutex};
use std::task::ready;
use tokio::sync::mpsc::{channel, Receiver};
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 super::{Capture, CaptureError, CaptureEvent, Position};
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,
};
mod display_util;
mod event_thread;
use input_event::{
scancode::{self, Linux},
Event, KeyboardEvent, PointerEvent, BTN_BACK, BTN_FORWARD, BTN_LEFT, BTN_MIDDLE, BTN_RIGHT,
};
use super::{Capture, CaptureError, CaptureEvent, CaptureHandle, Position};
enum Request {
Create(CaptureHandle, Position),
Destroy(CaptureHandle),
}
pub struct WindowsInputCapture {
event_rx: Receiver<(Position, CaptureEvent)>,
event_thread: EventThread,
event_rx: Receiver<(CaptureHandle, 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!();
}
}
#[async_trait]
impl Capture for WindowsInputCapture {
async fn create(&mut self, pos: Position) -> Result<(), CaptureError> {
self.event_thread.create(pos);
async fn create(&mut self, handle: CaptureHandle, pos: Position) -> Result<(), CaptureError> {
unsafe {
{
let mut requests = REQUEST_BUFFER.lock().unwrap();
requests.push(Request::Create(handle, pos));
}
signal_message_thread(EventType::Request);
}
Ok(())
}
async fn destroy(&mut self, pos: Position) -> Result<(), CaptureError> {
self.event_thread.destroy(pos);
async fn destroy(&mut self, handle: CaptureHandle) -> Result<(), CaptureError> {
unsafe {
{
let mut requests = REQUEST_BUFFER.lock().unwrap();
requests.push(Request::Destroy(handle));
}
signal_message_thread(EventType::Request);
}
Ok(())
}
async fn release(&mut self) -> Result<(), CaptureError> {
self.event_thread.release_capture();
unsafe { signal_message_thread(EventType::Release) };
Ok(())
}
@@ -39,19 +97,524 @@ impl Capture for WindowsInputCapture {
}
}
static mut REQUEST_BUFFER: Mutex<Vec<Request>> = Mutex::new(Vec::new());
static mut ACTIVE_CLIENT: Option<CaptureHandle> = None;
static mut CLIENT_FOR_POS: Lazy<HashMap<Position, CaptureHandle>> = Lazy::new(HashMap::new);
static mut EVENT_TX: Option<Sender<(CaptureHandle, 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 */
let Some(client) = CLIENT_FOR_POS.get(&pos) else {
return ret;
};
/* update active client and entry point */
ACTIVE_CLIENT.replace(*client);
ENTRY_POINT = clamp_to_display_bounds(prev_pos, curr_pos);
/* notify main thread */
log::debug!("ENTERED @ {prev_pos:?} -> {curr_pos:?}");
send_blocking(CaptureEvent::Begin);
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(client) = 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 = (client, 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"),
}
}
}
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()
};
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(handle, pos) => {
unsafe { CLIENT_FOR_POS.insert(pos, handle) };
}
Request::Destroy(handle) => unsafe {
for pos in [
Position::Left,
Position::Right,
Position::Top,
Position::Bottom,
] {
if ACTIVE_CLIENT == Some(handle) {
ACTIVE_CLIENT.take();
}
if CLIENT_FOR_POS.get(&pos).copied() == Some(handle) {
CLIENT_FOR_POS.remove(&pos);
}
}
},
}
}
impl WindowsInputCapture {
pub(crate) fn new() -> Self {
let (event_tx, event_rx) = channel(10);
let event_thread = EventThread::new(event_tx);
Self {
event_thread,
event_rx,
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,
}
}
}
}
impl Stream for WindowsInputCapture {
type Item = Result<(Position, CaptureEvent), CaptureError>;
type Item = Result<(CaptureHandle, CaptureEvent), CaptureError>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
match ready!(self.event_rx.poll_recv(cx)) {
None => Poll::Ready(None),
@@ -59,3 +622,10 @@ 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();
}
}

View File

@@ -1,99 +0,0 @@
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))
}

View File

@@ -1,545 +0,0 @@
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::error::TrySendError;
use tokio::sync::mpsc::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 super::{display_util, CaptureEvent, Position};
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), HWND::default(), 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, HINSTANCE::default(), 0).unwrap();
let _ = SetWindowsHookExW(WH_KEYBOARD_LL, kybrd_proc, HINSTANCE::default(), 0).unwrap();
}
let instance = unsafe { GetModuleHandleW(None).unwrap() };
let window_class: WNDCLASSW = WNDCLASSW {
lpfnWndProc: window_proc,
hInstance: instance.into(),
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,
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 == 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(HHOOK::default(), 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(HHOOK::default(), 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 & 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,
});
}
}
}
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 },
})
}
w => {
log::warn!("unknown mouse event: {w:?}");
None
}
}
}

View File

@@ -3,7 +3,10 @@ use std::task::Poll;
use async_trait::async_trait;
use futures_core::Stream;
use super::{error::X11InputCaptureCreationError, Capture, CaptureError, CaptureEvent, Position};
use super::{
error::X11InputCaptureCreationError, Capture, CaptureError, CaptureEvent, CaptureHandle,
Position,
};
pub struct X11InputCapture {}
@@ -15,11 +18,11 @@ impl X11InputCapture {
#[async_trait]
impl Capture for X11InputCapture {
async fn create(&mut self, _pos: Position) -> Result<(), CaptureError> {
async fn create(&mut self, _id: CaptureHandle, _pos: Position) -> Result<(), CaptureError> {
Ok(())
}
async fn destroy(&mut self, _pos: Position) -> Result<(), CaptureError> {
async fn destroy(&mut self, _id: CaptureHandle) -> Result<(), CaptureError> {
Ok(())
}
@@ -33,7 +36,7 @@ impl Capture for X11InputCapture {
}
impl Stream for X11InputCapture {
type Item = Result<(Position, CaptureEvent), CaptureError>;
type Item = Result<(CaptureHandle, CaptureEvent), CaptureError>;
fn poll_next(
self: std::pin::Pin<&mut Self>,

View File

@@ -1,7 +1,7 @@
[package]
name = "input-emulation"
description = "cross-platform input emulation library used by lan-mouse"
version = "0.3.0"
version = "0.2.1"
edition = "2021"
license = "GPL-3.0-or-later"
repository = "https://github.com/feschber/lan-mouse"
@@ -10,8 +10,8 @@ repository = "https://github.com/feschber/lan-mouse"
async-trait = "0.1.80"
futures = "0.3.28"
log = "0.4.22"
input-event = { path = "../input-event", version = "0.3.0" }
thiserror = "2.0.0"
input-event = { path = "../input-event", version = "0.2.1" }
thiserror = "1.0.61"
tokio = { version = "1.32.0", features = [
"io-util",
"io-std",
@@ -25,7 +25,6 @@ tokio = { version = "1.32.0", features = [
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",
@@ -39,14 +38,13 @@ 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 = "0.9", default-features = false, features = [
"tokio",
], optional = true }
reis = { version = "0.4", features = ["tokio"], optional = true }
reis = { version = "0.2", features = ["tokio"], optional = true }
[target.'cfg(target_os="macos")'.dependencies]
bitflags = "2.6.0"
core-graphics = { version = "0.24.0", features = ["highsierra"] }
core-graphics = { version = "0.23", features = ["highsierra"] }
keycode = "0.4.0"
[target.'cfg(windows)'.dependencies]
@@ -61,13 +59,13 @@ windows = { version = "0.58.0", features = [
] }
[features]
default = ["wlroots", "x11", "remote_desktop_portal", "libei"]
wlroots = [
default = ["wayland", "x11", "xdg_desktop_portal", "libei"]
wayland = [
"dep:wayland-client",
"dep:wayland-protocols",
"dep:wayland-protocols-wlr",
"dep:wayland-protocols-misc",
]
x11 = ["dep:x11"]
remote_desktop_portal = ["dep:ashpd"]
xdg_desktop_portal = ["dep:ashpd"]
libei = ["dep:reis", "dep:ashpd"]

View File

@@ -6,35 +6,53 @@ pub enum InputEmulationError {
Emulate(#[from] EmulationError),
}
#[cfg(all(
unix,
any(feature = "remote_desktop_portal", feature = "libei"),
not(target_os = "macos")
))]
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
use ashpd::{desktop::ResponseError, Error::Response};
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
use reis::tokio::EiConvertEventStreamError;
use std::io;
use thiserror::Error;
#[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
use wayland_client::{
backend::WaylandError,
globals::{BindError, GlobalError},
ConnectError, DispatchError,
};
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
use reis::tokio::HandshakeError;
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
#[derive(Debug, Error)]
#[error("error in libei stream: {inner:?}")]
pub struct ReisConvertStreamError {
inner: EiConvertEventStreamError,
}
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
impl From<EiConvertEventStreamError> for ReisConvertStreamError {
fn from(e: EiConvertEventStreamError) -> Self {
Self { inner: e }
}
}
#[derive(Debug, Error)]
pub enum EmulationError {
#[error("event stream closed")]
EndOfStream,
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
#[error("libei error: `{0}`")]
Libei(#[from] reis::Error),
#[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
#[error("libei error flushing events: `{0}`")]
Libei(#[from] reis::event::Error),
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
#[error("")]
LibeiConvertStream(#[from] ReisConvertStreamError),
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
#[error("wayland error: `{0}`")]
Wayland(#[from] wayland_client::backend::WaylandError),
#[cfg(all(
unix,
any(feature = "remote_desktop_portal", feature = "libei"),
any(feature = "xdg_desktop_portal", feature = "libei"),
not(target_os = "macos")
))]
#[error("xdg-desktop-portal: `{0}`")]
@@ -45,13 +63,13 @@ pub enum EmulationError {
#[derive(Debug, Error)]
pub enum EmulationCreationError {
#[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
#[error("wlroots backend: `{0}`")]
Wlroots(#[from] WlrootsEmulationCreationError),
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
#[error("libei backend: `{0}`")]
Libei(#[from] LibeiEmulationCreationError),
#[cfg(all(unix, feature = "remote_desktop_portal", not(target_os = "macos")))]
#[cfg(all(unix, feature = "xdg_desktop_portal", not(target_os = "macos")))]
#[error("xdg-desktop-portal: `{0}`")]
Xdp(#[from] XdpEmulationCreationError),
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
@@ -79,7 +97,7 @@ impl EmulationCreationError {
) {
return true;
}
#[cfg(all(unix, feature = "remote_desktop_portal", not(target_os = "macos")))]
#[cfg(all(unix, feature = "xdg_desktop_portal", not(target_os = "macos")))]
if matches!(
self,
EmulationCreationError::Xdp(XdpEmulationCreationError::Ashpd(Response(
@@ -92,7 +110,7 @@ impl EmulationCreationError {
}
}
#[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
#[derive(Debug, Error)]
pub enum WlrootsEmulationCreationError {
#[error(transparent)]
@@ -109,7 +127,7 @@ pub enum WlrootsEmulationCreationError {
Io(#[from] std::io::Error),
}
#[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
#[derive(Debug, Error)]
#[error("wayland protocol \"{protocol}\" not supported: {inner}")]
pub struct WaylandBindError {
@@ -117,7 +135,7 @@ pub struct WaylandBindError {
protocol: &'static str,
}
#[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
impl WaylandBindError {
pub(crate) fn new(inner: BindError, protocol: &'static str) -> Self {
Self { inner, protocol }
@@ -132,10 +150,10 @@ pub enum LibeiEmulationCreationError {
#[error(transparent)]
Io(#[from] std::io::Error),
#[error(transparent)]
Reis(#[from] reis::Error),
Handshake(#[from] HandshakeError),
}
#[cfg(all(unix, feature = "remote_desktop_portal", not(target_os = "macos")))]
#[cfg(all(unix, feature = "xdg_desktop_portal", not(target_os = "macos")))]
#[derive(Debug, Error)]
pub enum XdpEmulationCreationError {
#[error(transparent)]

View File

@@ -14,10 +14,10 @@ mod windows;
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
mod x11;
#[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
mod wlroots;
#[cfg(all(unix, feature = "remote_desktop_portal", not(target_os = "macos")))]
#[cfg(all(unix, feature = "xdg_desktop_portal", not(target_os = "macos")))]
mod xdg_desktop_portal;
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
@@ -34,11 +34,11 @@ pub type EmulationHandle = u64;
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub enum Backend {
#[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
Wlroots,
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
Libei,
#[cfg(all(unix, feature = "remote_desktop_portal", not(target_os = "macos")))]
#[cfg(all(unix, feature = "xdg_desktop_portal", not(target_os = "macos")))]
Xdp,
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
X11,
@@ -52,11 +52,11 @@ pub enum Backend {
impl Display for Backend {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
#[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
Backend::Wlroots => write!(f, "wlroots"),
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
Backend::Libei => write!(f, "libei"),
#[cfg(all(unix, feature = "remote_desktop_portal", not(target_os = "macos")))]
#[cfg(all(unix, feature = "xdg_desktop_portal", not(target_os = "macos")))]
Backend::Xdp => write!(f, "xdg-desktop-portal"),
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
Backend::X11 => write!(f, "X11"),
@@ -78,13 +78,13 @@ pub struct InputEmulation {
impl InputEmulation {
async fn with_backend(backend: Backend) -> Result<InputEmulation, EmulationCreationError> {
let emulation: Box<dyn Emulation> = match backend {
#[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
Backend::Wlroots => Box::new(wlroots::WlrootsEmulation::new()?),
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
Backend::Libei => Box::new(libei::LibeiEmulation::new().await?),
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
Backend::X11 => Box::new(x11::X11Emulation::new()?),
#[cfg(all(unix, feature = "remote_desktop_portal", not(target_os = "macos")))]
#[cfg(all(unix, feature = "xdg_desktop_portal", not(target_os = "macos")))]
Backend::Xdp => Box::new(xdg_desktop_portal::DesktopPortalEmulation::new().await?),
#[cfg(windows)]
Backend::Windows => Box::new(windows::WindowsEmulation::new()?),
@@ -109,11 +109,11 @@ impl InputEmulation {
}
for backend in [
#[cfg(all(unix, feature = "wlroots", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
Backend::Wlroots,
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
Backend::Libei,
#[cfg(all(unix, feature = "remote_desktop_portal", not(target_os = "macos")))]
#[cfg(all(unix, feature = "xdg_desktop_portal", not(target_os = "macos")))]
Backend::Xdp,
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
Backend::X11,
@@ -217,13 +217,15 @@ impl InputEmulation {
return false;
};
if state == 0 {
let ret = if state == 0 {
// currently pressed => can release
pressed_keys.remove(&key)
} else {
// currently not pressed => can press
pressed_keys.insert(key)
}
};
log::info!("client {handle}: pressed keys: {:?}", pressed_keys);
ret
}
}

View File

@@ -1,18 +1,23 @@
use futures::{future, StreamExt};
use once_cell::sync::Lazy;
use std::{
collections::HashMap,
io,
os::{fd::OwnedFd, unix::net::UnixStream},
sync::{
atomic::{AtomicBool, Ordering},
atomic::{AtomicBool, AtomicU32, Ordering},
Arc, Mutex, RwLock,
},
time::{SystemTime, UNIX_EPOCH},
};
use tokio::task::JoinHandle;
use ashpd::desktop::{
remote_desktop::{DeviceType, RemoteDesktop},
PersistMode, Session,
use ashpd::{
desktop::{
remote_desktop::{DeviceType, RemoteDesktop},
PersistMode, Session,
},
WindowIdentifier,
};
use async_trait::async_trait;
@@ -21,16 +26,32 @@ use reis::{
self, button::ButtonState, handshake::ContextType, keyboard::KeyState, Button, Keyboard,
Pointer, Scroll,
},
event::{self, Connection, DeviceCapability, DeviceEvent, EiEvent, SeatEvent},
tokio::EiConvertEventStream,
event::{DeviceCapability, DeviceEvent, EiEvent, SeatEvent},
tokio::{ei_handshake, EiConvertEventStream, EiEventStream},
};
use input_event::{Event, KeyboardEvent, PointerEvent};
use crate::error::EmulationError;
use crate::error::{EmulationError, ReisConvertStreamError};
use super::{error::LibeiEmulationCreationError, Emulation, EmulationHandle};
static INTERFACES: Lazy<HashMap<&'static str, u32>> = Lazy::new(|| {
let mut m = HashMap::new();
m.insert("ei_connection", 1);
m.insert("ei_callback", 1);
m.insert("ei_pingpong", 1);
m.insert("ei_seat", 1);
m.insert("ei_device", 2);
m.insert("ei_pointer", 1);
m.insert("ei_pointer_absolute", 1);
m.insert("ei_scroll", 1);
m.insert("ei_button", 1);
m.insert("ei_keyboard", 1);
m.insert("ei_touchscreen", 1);
m
});
#[derive(Clone, Default)]
struct Devices {
pointer: Arc<RwLock<Option<(ei::Device, ei::Pointer)>>>,
@@ -41,11 +62,11 @@ struct Devices {
pub(crate) struct LibeiEmulation<'a> {
context: ei::Context,
conn: event::Connection,
devices: Devices,
ei_task: JoinHandle<()>,
error: Arc<Mutex<Option<EmulationError>>>,
libei_error: Arc<AtomicBool>,
serial: AtomicU32,
_remote_desktop: RemoteDesktop<'a>,
session: Session<'a, RemoteDesktop<'a>>,
}
@@ -68,27 +89,35 @@ async fn get_ei_fd<'a>(
.await?;
log::info!("requesting permission for input emulation");
let _devices = remote_desktop.start(&session, None).await?.response()?;
let _devices = remote_desktop
.start(&session, &WindowIdentifier::default())
.await?
.response()?;
let fd = remote_desktop.connect_to_eis(&session).await?;
Ok((remote_desktop, session, fd))
}
impl LibeiEmulation<'_> {
impl<'a> LibeiEmulation<'a> {
pub(crate) async fn new() -> Result<Self, LibeiEmulationCreationError> {
let (_remote_desktop, session, eifd) = get_ei_fd().await?;
let stream = UnixStream::from(eifd);
stream.set_nonblocking(true)?;
let context = ei::Context::new(stream)?;
let (conn, events) = context
.handshake_tokio("de.feschber.LanMouse", ContextType::Sender)
.await?;
let mut events = EiEventStream::new(context.clone())?;
let handshake = ei_handshake(
&mut events,
"de.feschber.LanMouse",
ContextType::Sender,
&INTERFACES,
)
.await?;
let events = EiConvertEventStream::new(events, handshake.serial);
let devices = Devices::default();
let libei_error = Arc::new(AtomicBool::default());
let error = Arc::new(Mutex::new(None));
let ei_handler = ei_task(
events,
conn.clone(),
context.clone(),
devices.clone(),
libei_error.clone(),
@@ -96,27 +125,29 @@ impl LibeiEmulation<'_> {
);
let ei_task = tokio::task::spawn_local(ei_handler);
let serial = AtomicU32::new(handshake.serial);
Ok(Self {
context,
conn,
devices,
ei_task,
error,
libei_error,
serial,
_remote_desktop,
session,
})
}
}
impl Drop for LibeiEmulation<'_> {
impl<'a> Drop for LibeiEmulation<'a> {
fn drop(&mut self) {
self.ei_task.abort();
}
}
#[async_trait]
impl Emulation for LibeiEmulation<'_> {
impl<'a> Emulation for LibeiEmulation<'a> {
async fn consume(
&mut self,
event: Event,
@@ -138,7 +169,7 @@ impl Emulation for LibeiEmulation<'_> {
let pointer_device = self.devices.pointer.read().unwrap();
if let Some((d, p)) = pointer_device.as_ref() {
p.motion_relative(dx as f32, dy as f32);
d.frame(self.conn.serial(), now);
d.frame(self.serial.load(Ordering::SeqCst), now);
}
}
PointerEvent::Button {
@@ -155,7 +186,7 @@ impl Emulation for LibeiEmulation<'_> {
_ => ButtonState::Press,
},
);
d.frame(self.conn.serial(), now);
d.frame(self.serial.load(Ordering::SeqCst), now);
}
}
PointerEvent::Axis {
@@ -169,7 +200,7 @@ impl Emulation for LibeiEmulation<'_> {
0 => s.scroll(0., value as f32),
_ => s.scroll(value as f32, 0.),
}
d.frame(self.conn.serial(), now);
d.frame(self.serial.load(Ordering::SeqCst), now);
}
}
PointerEvent::AxisDiscrete120 { axis, value } => {
@@ -179,7 +210,7 @@ impl Emulation for LibeiEmulation<'_> {
0 => s.scroll_discrete(0, value),
_ => s.scroll_discrete(value, 0),
}
d.frame(self.conn.serial(), now);
d.frame(self.serial.load(Ordering::SeqCst), now);
}
}
},
@@ -198,7 +229,7 @@ impl Emulation for LibeiEmulation<'_> {
_ => KeyState::Press,
},
);
d.frame(self.conn.serial(), now);
d.frame(self.serial.load(Ordering::SeqCst), now);
}
}
KeyboardEvent::Modifiers { .. } => {}
@@ -221,7 +252,6 @@ impl Emulation for LibeiEmulation<'_> {
async fn ei_task(
mut events: EiConvertEventStream,
_conn: Connection,
context: ei::Context,
devices: Devices,
libei_error: Arc<AtomicBool>,
@@ -246,7 +276,11 @@ async fn ei_event_handler(
devices: &Devices,
) -> Result<(), EmulationError> {
loop {
let event = events.next().await.ok_or(EmulationError::EndOfStream)??;
let event = events
.next()
.await
.ok_or(EmulationError::EndOfStream)?
.map_err(ReisConvertStreamError::from)?;
const CAPABILITIES: &[DeviceCapability] = &[
DeviceCapability::Pointer,
DeviceCapability::PointerAbsolute,

View File

@@ -1,23 +1,18 @@
use super::{error::EmulationError, Emulation, EmulationHandle};
use async_trait::async_trait;
use bitflags::bitflags;
use core_graphics::base::CGFloat;
use core_graphics::display::{
CGDirectDisplayID, CGDisplayBounds, CGGetDisplaysWithRect, CGPoint, CGRect, CGSize,
};
use core_graphics::event::{
CGEvent, CGEventFlags, CGEventTapLocation, CGEventType, CGKeyCode, CGMouseButton, EventField,
ScrollEventUnit,
CGEvent, CGEventTapLocation, CGEventType, CGKeyCode, CGMouseButton, EventField, ScrollEventUnit,
};
use core_graphics::event_source::{CGEventSource, CGEventSourceStateID};
use input_event::{scancode, Event, KeyboardEvent, PointerEvent};
use input_event::{Event, KeyboardEvent, PointerEvent};
use keycode::{KeyMap, KeyMapping};
use std::cell::Cell;
use std::ops::{Index, IndexMut};
use std::rc::Rc;
use std::sync::Arc;
use std::time::Duration;
use tokio::{sync::Notify, task::JoinHandle};
use tokio::task::AbortHandle;
use super::error::MacOSEmulationCreationError;
@@ -26,10 +21,8 @@ const DEFAULT_REPEAT_INTERVAL: Duration = Duration::from_millis(32);
pub(crate) struct MacOSEmulation {
event_source: CGEventSource,
repeat_task: Option<JoinHandle<()>>,
repeat_task: Option<AbortHandle>,
button_state: ButtonState,
modifier_state: Rc<Cell<XMods>>,
notify_repeat_task: Arc<Notify>,
}
struct ButtonState {
@@ -75,8 +68,6 @@ impl MacOSEmulation {
event_source,
button_state,
repeat_task: None,
notify_repeat_task: Arc::new(Notify::new()),
modifier_state: Rc::new(Cell::new(XMods::empty())),
})
}
@@ -88,40 +79,25 @@ impl MacOSEmulation {
async fn spawn_repeat_task(&mut self, key: u16) {
// there can only be one repeating key and it's
// always the last to be pressed
self.cancel_repeat_task().await;
self.kill_repeat_task();
let event_source = self.event_source.clone();
let notify = self.notify_repeat_task.clone();
let modifiers = self.modifier_state.clone();
let repeat_task = tokio::task::spawn_local(async move {
let stop = tokio::select! {
_ = tokio::time::sleep(DEFAULT_REPEAT_DELAY) => false,
_ = notify.notified() => true,
};
if !stop {
loop {
key_event(event_source.clone(), key, 1, modifiers.get());
tokio::select! {
_ = tokio::time::sleep(DEFAULT_REPEAT_INTERVAL) => {},
_ = notify.notified() => break,
}
}
tokio::time::sleep(DEFAULT_REPEAT_DELAY).await;
loop {
key_event(event_source.clone(), key, 1);
tokio::time::sleep(DEFAULT_REPEAT_INTERVAL).await;
}
// release key when cancelled
update_modifiers(&modifiers, key as u32, 0);
key_event(event_source.clone(), key, 0, modifiers.get());
});
self.repeat_task = Some(repeat_task);
self.repeat_task = Some(repeat_task.abort_handle());
}
async fn cancel_repeat_task(&mut self) {
fn kill_repeat_task(&mut self) {
if let Some(task) = self.repeat_task.take() {
self.notify_repeat_task.notify_waiters();
let _ = task.await;
task.abort();
}
}
}
fn key_event(event_source: CGEventSource, key: u16, state: u8, modifiers: XMods) {
fn key_event(event_source: CGEventSource, key: u16, state: u8) {
let event = match CGEvent::new_keyboard_event(event_source, key, state != 0) {
Ok(e) => e,
Err(_) => {
@@ -129,21 +105,7 @@ fn key_event(event_source: CGEventSource, key: u16, state: u8, modifiers: XMods)
return;
}
};
event.set_flags(to_cgevent_flags(modifiers));
event.post(CGEventTapLocation::HID);
log::trace!("key event: {key} {state}");
}
fn modifier_event(event_source: CGEventSource, depressed: XMods) {
let Ok(event) = CGEvent::new(event_source) else {
log::warn!("could not create CGEvent");
return;
};
let flags = to_cgevent_flags(depressed);
event.set_type(CGEventType::FlagsChanged);
event.set_flags(flags);
event.post(CGEventTapLocation::HID);
log::trace!("modifiers updated: {depressed:?}");
}
fn get_display_at_point(x: CGFloat, y: CGFloat) -> Option<CGDirectDisplayID> {
@@ -170,7 +132,7 @@ fn get_display_at_point(x: CGFloat, y: CGFloat) -> Option<CGDirectDisplayID> {
return Option::None;
}
displays.first().copied()
return displays.first().copied();
}
fn get_display_bounds(display: CGDirectDisplayID) -> (CGFloat, CGFloat, CGFloat, CGFloat) {
@@ -384,25 +346,11 @@ impl Emulation for MacOSEmulation {
match state {
// pressed
1 => self.spawn_repeat_task(code).await,
_ => self.cancel_repeat_task().await,
_ => self.kill_repeat_task(),
}
update_modifiers(&self.modifier_state, key, state);
key_event(
self.event_source.clone(),
code,
state,
self.modifier_state.get(),
);
}
KeyboardEvent::Modifiers {
depressed,
latched,
locked,
group,
} => {
set_modifiers(&self.modifier_state, depressed, latched, locked, group);
modifier_event(self.event_source.clone(), self.modifier_state.get());
key_event(self.event_source.clone(), code, state)
}
KeyboardEvent::Modifiers { .. } => {}
},
}
// FIXME
@@ -415,81 +363,3 @@ impl Emulation for MacOSEmulation {
async fn terminate(&mut self) {}
}
fn update_modifiers(modifiers: &Cell<XMods>, key: u32, state: u8) -> bool {
if let Ok(key) = scancode::Linux::try_from(key) {
let mask = match key {
scancode::Linux::KeyLeftShift | scancode::Linux::KeyRightShift => XMods::ShiftMask,
scancode::Linux::KeyCapsLock => XMods::LockMask,
scancode::Linux::KeyLeftCtrl | scancode::Linux::KeyRightCtrl => XMods::ControlMask,
scancode::Linux::KeyLeftAlt | scancode::Linux::KeyRightalt => XMods::Mod1Mask,
scancode::Linux::KeyLeftMeta | scancode::Linux::KeyRightmeta => XMods::Mod4Mask,
_ => XMods::empty(),
};
// unchanged
if mask.is_empty() {
return false;
}
let mut mods = modifiers.get();
match state {
1 => mods.insert(mask),
_ => mods.remove(mask),
}
modifiers.set(mods);
true
} else {
false
}
}
fn set_modifiers(
active_modifiers: &Cell<XMods>,
depressed: u32,
latched: u32,
locked: u32,
group: u32,
) {
let depressed = XMods::from_bits(depressed).unwrap_or_default();
let _latched = XMods::from_bits(latched).unwrap_or_default();
let _locked = XMods::from_bits(locked).unwrap_or_default();
let _group = XMods::from_bits(group).unwrap_or_default();
// we only care about the depressed modifiers for now
active_modifiers.replace(depressed);
}
fn to_cgevent_flags(depressed: XMods) -> CGEventFlags {
let mut flags = CGEventFlags::empty();
if depressed.contains(XMods::ShiftMask) {
flags |= CGEventFlags::CGEventFlagShift;
}
if depressed.contains(XMods::LockMask) {
flags |= CGEventFlags::CGEventFlagAlphaShift;
}
if depressed.contains(XMods::ControlMask) {
flags |= CGEventFlags::CGEventFlagControl;
}
if depressed.contains(XMods::Mod1Mask) {
flags |= CGEventFlags::CGEventFlagAlternate;
}
if depressed.contains(XMods::Mod4Mask) {
flags |= CGEventFlags::CGEventFlagCommand;
}
flags
}
// From X11/X.h
bitflags! {
#[repr(C)]
#[derive(Clone, Copy, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd)]
struct XMods: u32 {
const ShiftMask = (1<<0);
const LockMask = (1<<1);
const ControlMask = (1<<2);
const Mod1Mask = (1<<3);
const Mod2Mask = (1<<4);
const Mod3Mask = (1<<5);
const Mod4Mask = (1<<6);
const Mod5Mask = (1<<7);
}
}

View File

@@ -2,12 +2,9 @@ use crate::error::EmulationError;
use super::{error::WlrootsEmulationCreationError, Emulation};
use async_trait::async_trait;
use bitflags::bitflags;
use std::collections::HashMap;
use std::io;
use std::os::fd::{AsFd, OwnedFd};
use std::sync::{Arc, Mutex};
use std::time::{SystemTime, UNIX_EPOCH};
use wayland_client::backend::WaylandError;
use wayland_client::WEnum;
@@ -31,7 +28,7 @@ use wayland_client::{
Connection, Dispatch, EventQueue, QueueHandle,
};
use input_event::{scancode, Event, KeyboardEvent, PointerEvent};
use input_event::{Event, KeyboardEvent, PointerEvent};
use super::error::WaylandBindError;
use super::EmulationHandle;
@@ -105,11 +102,7 @@ impl State {
panic!("no keymap");
}
let vinput = VirtualInput {
pointer,
keyboard,
modifiers: Arc::new(Mutex::new(XMods::empty())),
};
let vinput = VirtualInput { pointer, keyboard };
self.input_for_client.insert(client, vinput);
}
@@ -180,16 +173,10 @@ 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 {
@@ -210,7 +197,7 @@ impl VirtualInput {
PointerEvent::AxisDiscrete120 { axis, value } => {
let axis: Axis = (axis as u32).try_into()?;
self.pointer
.axis_discrete(now, axis, value as f64 / 6., value / 120);
.axis_discrete(0, axis, value as f64 / 6., value / 120);
self.pointer.frame();
}
}
@@ -219,17 +206,6 @@ 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,
@@ -237,10 +213,6 @@ 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);
}
@@ -301,74 +273,3 @@ 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!("{:#?} is not a modifier key", 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)
}
}

View File

@@ -4,6 +4,7 @@ use ashpd::{
PersistMode, Session,
},
zbus::AsyncDrop,
WindowIdentifier,
};
use async_trait::async_trait;
@@ -42,7 +43,10 @@ impl<'a> DesktopPortalEmulation<'a> {
.await?;
log::info!("requesting permission for input emulation");
let _devices = proxy.start(&session, None).await?.response()?;
let _devices = proxy
.start(&session, &WindowIdentifier::default())
.await?
.response()?;
log::debug!("started session");
let session = session;
@@ -52,7 +56,7 @@ impl<'a> DesktopPortalEmulation<'a> {
}
#[async_trait]
impl Emulation for DesktopPortalEmulation<'_> {
impl<'a> Emulation for DesktopPortalEmulation<'a> {
async fn consume(
&mut self,
event: input_event::Event,
@@ -141,7 +145,7 @@ impl Emulation for DesktopPortalEmulation<'_> {
}
}
impl AsyncDrop for DesktopPortalEmulation<'_> {
impl<'a> AsyncDrop for DesktopPortalEmulation<'a> {
#[doc = r" Perform the async cleanup."]
#[must_use]
#[allow(clippy::type_complexity, clippy::type_repetition_in_bounds)]

View File

@@ -1,7 +1,7 @@
[package]
name = "input-event"
description = "cross-platform input-event types for input-capture / input-emulation"
version = "0.3.0"
version = "0.2.1"
edition = "2021"
license = "GPL-3.0-or-later"
repository = "https://github.com/feschber/lan-mouse"
@@ -11,10 +11,10 @@ futures-core = "0.3.30"
log = "0.4.22"
num_enum = "0.7.2"
serde = { version = "1.0", features = ["derive"] }
thiserror = "2.0.0"
thiserror = "1.0.61"
[target.'cfg(all(unix, not(target_os="macos")))'.dependencies]
reis = { version = "0.4", optional = true }
reis = { version = "0.2.0", optional = true }
[features]
default = ["libei"]

View File

@@ -1,14 +1,14 @@
[package]
name = "lan-mouse-cli"
description = "CLI Frontend for lan-mouse"
version = "0.2.0"
version = "0.1.0"
edition = "2021"
license = "GPL-3.0-or-later"
repository = "https://github.com/feschber/lan-mouse"
[dependencies]
futures = "0.3.30"
lan-mouse-ipc = { path = "../lan-mouse-ipc", version = "0.2.0" }
lan-mouse-ipc = { path = "../lan-mouse-ipc", version = "0.1.0" }
tokio = { version = "1.32.0", features = [
"io-util",
"io-std",

View File

@@ -274,17 +274,6 @@ impl Cli {
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(..) => {}
}
}

View File

@@ -1,7 +1,7 @@
[package]
name = "lan-mouse-gtk"
description = "GTK4 / Libadwaita Frontend for lan-mouse"
version = "0.2.0"
version = "0.1.0"
edition = "2021"
license = "GPL-3.0-or-later"
repository = "https://github.com/feschber/lan-mouse"
@@ -12,7 +12,7 @@ adw = { package = "libadwaita", version = "0.7.0", features = ["v1_1"] }
async-channel = { version = "2.1.1" }
hostname = "0.4.0"
log = "0.4.20"
lan-mouse-ipc = { path = "../lan-mouse-ipc", version = "0.2.0" }
lan-mouse-ipc = { path = "../lan-mouse-ipc", version = "0.1.0" }
[build-dependencies]
glib-build-tools = { version = "0.20.0" }

View File

@@ -1,101 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<requires lib="gtk" version="4.0"/>
<requires lib="libadwaita" version="1.0"/>
<template class="FingerprintWindow" parent="AdwWindow">
<property name="modal">True</property>
<property name="width-request">880</property>
<property name="default-width">880</property>
<property name="height-request">380</property>
<property name="default-height">380</property>
<property name="title" translatable="yes">Add Certificate Fingerprint</property>
<property name="content">
<object class="AdwToolbarView">
<child type="top">
<object class="AdwHeaderBar"/>
</child>
<property name="content">
<object class="AdwClamp">
<property name="maximum-size">770</property>
<property name="tightening-threshold">0</property>
<property name="child">
<object class="GtkBox">
<property name="orientation">vertical</property>
<property name="spacing">18</property>
<child>
<object class="GtkLabel">
<property name="label">The certificate fingerprint serves as a unique identifier for your device.</property>
</object>
</child>
<child>
<object class="GtkLabel">
<property name="label">You can find it under the `General` section of the device you want to connect</property>
</object>
</child>
<child>
<object class="AdwPreferencesGroup">
<property name="title">description</property>
<child>
<object class="AdwActionRow">
<property name="child">
<object class="GtkText" id="description">
<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="enable-undo">True</property>
<property name="hexpand">True</property>
<property name="vexpand">True</property>
<property name="max-length">0</property>
</object>
</property>
</object>
</child>
</object>
</child>
<child>
<object class="AdwPreferencesGroup">
<property name="title">sha256 fingerprint</property>
<child>
<object class="AdwActionRow">
<property name="child">
<object class="GtkText" id="fingerprint">
<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="enable-undo">True</property>
<property name="hexpand">True</property>
<property name="vexpand">True</property>
<property name="max-length">0</property>
</object>
</property>
</object>
</child>
</object>
</child>
<child>
<object class="GtkBox">
<property name="orientation">vertical</property>
<property name="halign">center</property>
<child>
<object class="GtkButton" id="confirm_button">
<signal name="clicked" handler="handle_confirm" swapped="true"/>
<property name="label" translatable="yes">Confirm</property>
<property name="can-shrink">True</property>
<style>
<class name="pill"/>
<class name="suggested-action"/>
</style>
</object>
</child>
</object>
</child>
</object>
</property>
</object>
</property>
</object>
</property>
</template>
</interface>

View File

@@ -1,16 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<template class="KeyRow" parent="AdwActionRow">
<child type="prefix">
<object class="GtkButton" id="delete_button">
<property name="valign">center</property>
<property name="halign">end</property>
<property name="tooltip-text" translatable="yes">revoke authorization</property>
<property name="icon-name">edit-delete-symbolic</property>
<style>
<class name="flat"/>
</style>
</object>
</child>
</template>
</interface>

View File

@@ -2,9 +2,7 @@
<gresources>
<gresource prefix="/de/feschber/LanMouse">
<file compressed="true" preprocess="xml-stripblanks">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>
</gresource>
<gresource prefix="/de/feschber/LanMouse/icons">
<file compressed="true" preprocess="xml-stripblanks">de.feschber.LanMouse.svg</file>

View File

@@ -121,31 +121,7 @@
-->
<child>
<object class="AdwActionRow">
<property name="title">hostname &#38;amp; port</property>
<child>
<object class="GtkButton" id="copy-hostname-button">
<!--<property name="icon-name">edit-copy-symbolic</property>-->
<property name="valign">center</property>
<signal name="clicked" handler="handle_copy_hostname" swapped="true"/>
<child>
<object class="GtkBox">
<property name="spacing">30</property>
<child>
<object class="GtkLabel" id="hostname_label">
<property name="label">&lt;span font_style=&quot;italic&quot; font_weight=&quot;light&quot; foreground=&quot;darkgrey&quot;&gt;could not determine hostname&lt;/span&gt;</property>
<property name="use-markup">true</property>
<property name="valign">center</property>
</object>
</child>
<child>
<object class="GtkImage" id="hostname_copy_icon">
<property name="icon-name">edit-copy-symbolic</property>
</object>
</child>
</object>
</child>
</object>
</child>
<property name="title">port</property>
<child>
<object class="GtkEntry" id="port_entry">
<property name="max-width-chars">5</property>
@@ -184,14 +160,20 @@
</object>
</child>
<child>
<object class="AdwActionRow" id="fingerprint_row">
<property name="title">certificate fingerprint</property>
<property name="icon-name">auth-fingerprint-symbolic</property>
<object class="AdwActionRow">
<property name="title">hostname</property>
<child>
<object class="GtkButton" id="copy-fingerprint-button">
<object class="GtkLabel" id="hostname_label">
<property name="label">&lt;span font_style=&quot;italic&quot; font_weight=&quot;light&quot; foreground=&quot;darkgrey&quot;&gt;could not determine hostname&lt;/span&gt;</property>
<property name="use-markup">true</property>
<property name="valign">center</property>
</object>
</child>
<child>
<object class="GtkButton" id="copy-hostname-button">
<property name="icon-name">edit-copy-symbolic</property>
<property name="valign">center</property>
<signal name="clicked" handler="handle_copy_fingerprint" swapped="true"/>
<signal name="clicked" handler="handle_copy_hostname" swapped="true"/>
</object>
</child>
</object>
@@ -231,39 +213,6 @@
</child>
</object>
</child>
<child>
<object class="AdwPreferencesGroup">
<property name="title" translatable="yes">Incoming Connections</property>
<property name="header-suffix">
<object class="GtkButton">
<signal name="clicked" handler="handle_add_cert_fingerprint" swapped="true"/>
<property name="child">
<object class="AdwButtonContent">
<property name="icon-name">auth-fingerprint-symbolic</property>
<property name="label" translatable="yes">Authorize</property>
</object>
</property>
<style>
<class name="flat"/>
</style>
</object>
</property>
<child>
<object class="GtkListBox" id="authorized_list">
<property name="selection-mode">none</property>
<child type="placeholder">
<object class="AdwActionRow" id="authorized_placeholder">
<property name="title">no devices registered!</property>
<property name="subtitle">authorize a new device via the "Authorize" button</property>
</object>
</child>
<style>
<class name="boxed-list" />
</style>
</object>
</child>
</object>
</child>
</object>
</property>
</object>

View File

@@ -1,18 +0,0 @@
mod imp;
use glib::Object;
use gtk::{gio, glib};
glib::wrapper! {
pub struct FingerprintWindow(ObjectSubclass<imp::FingerprintWindow>)
@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 FingerprintWindow {
pub(crate) fn new() -> Self {
let window: Self = Object::builder().build();
window
}
}

View File

@@ -1,64 +0,0 @@
use std::sync::OnceLock;
use adw::prelude::*;
use adw::subclass::prelude::*;
use glib::subclass::InitializingObject;
use gtk::{
glib::{self, subclass::Signal},
template_callbacks, Button, CompositeTemplate, Text,
};
#[derive(CompositeTemplate, Default)]
#[template(resource = "/de/feschber/LanMouse/fingerprint_window.ui")]
pub struct FingerprintWindow {
#[template_child]
pub description: TemplateChild<Text>,
#[template_child]
pub fingerprint: TemplateChild<Text>,
#[template_child]
pub confirm_button: TemplateChild<Button>,
}
#[glib::object_subclass]
impl ObjectSubclass for FingerprintWindow {
const NAME: &'static str = "FingerprintWindow";
const ABSTRACT: bool = false;
type Type = super::FingerprintWindow;
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 FingerprintWindow {
#[template_callback]
fn handle_confirm(&self, _button: Button) {
let desc = self.description.text().as_str().trim().to_owned();
let fp = self.fingerprint.text().as_str().trim().to_owned();
self.obj().emit_by_name("confirm-clicked", &[&desc, &fp])
}
}
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()]
})
}
}
impl WidgetImpl for FingerprintWindow {}
impl WindowImpl for FingerprintWindow {}
impl ApplicationWindowImpl for FingerprintWindow {}
impl AdwWindowImpl for FingerprintWindow {}

View File

@@ -1,25 +0,0 @@
mod imp;
use adw::subclass::prelude::*;
use gtk::glib::{self, Object};
glib::wrapper! {
pub struct KeyObject(ObjectSubclass<imp::KeyObject>);
}
impl KeyObject {
pub fn new(desc: String, fp: String) -> Self {
Object::builder()
.property("description", desc)
.property("fingerprint", fp)
.build()
}
pub fn get_description(&self) -> String {
self.imp().description.borrow().clone()
}
pub fn get_fingerprint(&self) -> String {
self.imp().fingerprint.borrow().clone()
}
}

View File

@@ -1,24 +0,0 @@
use std::cell::RefCell;
use glib::Properties;
use gtk::glib;
use gtk::prelude::*;
use gtk::subclass::prelude::*;
#[derive(Properties, Default)]
#[properties(wrapper_type = super::KeyObject)]
pub struct KeyObject {
#[property(name = "description", get, set, type = String)]
pub description: RefCell<String>,
#[property(name = "fingerprint", get, set, type = String)]
pub fingerprint: RefCell<String>,
}
#[glib::object_subclass]
impl ObjectSubclass for KeyObject {
const NAME: &'static str = "KeyObject";
type Type = super::KeyObject;
}
#[glib::derived_properties]
impl ObjectImpl for KeyObject {}

View File

@@ -1,48 +0,0 @@
mod imp;
use adw::prelude::*;
use adw::subclass::prelude::*;
use gtk::glib::{self, Object};
use super::KeyObject;
glib::wrapper! {
pub struct KeyRow(ObjectSubclass<imp::KeyRow>)
@extends gtk::ListBoxRow, gtk::Widget, adw::PreferencesRow, adw::ExpanderRow,
@implements gtk::Accessible, gtk::Actionable, gtk::Buildable, gtk::ConstraintTarget;
}
impl Default for KeyRow {
fn default() -> Self {
Self::new()
}
}
impl KeyRow {
pub fn new() -> Self {
Object::builder().build()
}
pub fn bind(&self, key_object: &KeyObject) {
let mut bindings = self.imp().bindings.borrow_mut();
let title_binding = key_object
.bind_property("description", self, "title")
.sync_create()
.build();
let subtitle_binding = key_object
.bind_property("fingerprint", self, "subtitle")
.sync_create()
.build();
bindings.push(title_binding);
bindings.push(subtitle_binding);
}
pub fn unbind(&self) {
for binding in self.imp().bindings.borrow_mut().drain(..) {
binding.unbind();
}
}
}

View File

@@ -1,68 +0,0 @@
use std::cell::RefCell;
use adw::subclass::prelude::*;
use adw::{prelude::*, ActionRow};
use glib::{subclass::InitializingObject, Binding};
use gtk::glib::clone;
use gtk::glib::subclass::Signal;
use gtk::{glib, Button, CompositeTemplate};
use std::sync::OnceLock;
#[derive(CompositeTemplate, Default)]
#[template(resource = "/de/feschber/LanMouse/key_row.ui")]
pub struct KeyRow {
#[template_child]
pub delete_button: TemplateChild<gtk::Button>,
pub bindings: RefCell<Vec<Binding>>,
}
#[glib::object_subclass]
impl ObjectSubclass for KeyRow {
// `NAME` needs to match `class` attribute of template
const NAME: &'static str = "KeyRow";
const ABSTRACT: bool = false;
type Type = super::KeyRow;
type ParentType = ActionRow;
fn class_init(klass: &mut Self::Class) {
klass.bind_template();
klass.bind_template_callbacks();
}
fn instance_init(obj: &InitializingObject<Self>) {
obj.init_template();
}
}
impl ObjectImpl for KeyRow {
fn constructed(&self) {
self.parent_constructed();
self.delete_button.connect_clicked(clone!(
#[weak(rename_to = row)]
self,
move |button| {
row.handle_delete(button);
}
));
}
fn signals() -> &'static [glib::subclass::Signal] {
static SIGNALS: OnceLock<Vec<Signal>> = OnceLock::new();
SIGNALS.get_or_init(|| vec![Signal::builder("request-delete").build()])
}
}
#[gtk::template_callbacks]
impl KeyRow {
#[template_callback]
fn handle_delete(&self, _button: &Button) {
self.obj().emit_by_name::<()>("request-delete", &[]);
}
}
impl WidgetImpl for KeyRow {}
impl BoxImpl for KeyRow {}
impl ListBoxRowImpl for KeyRow {}
impl PreferencesRowImpl for KeyRow {}
impl ActionRowImpl for KeyRow {}

View File

@@ -1,8 +1,5 @@
mod client_object;
mod client_row;
mod fingerprint_window;
mod key_object;
mod key_row;
mod window;
use std::{env, process, str};
@@ -18,7 +15,6 @@ use gtk::{
use gtk::{gio, glib, prelude::ApplicationExt};
use self::client_object::ClientObject;
use self::key_object::KeyObject;
pub fn run() -> glib::ExitCode {
log::debug!("running gtk frontend");
@@ -136,14 +132,6 @@ fn build_ui(app: &Application) {
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(..) => {}
}
}
}

View File

@@ -1,7 +1,5 @@
mod imp;
use std::collections::HashMap;
use adw::prelude::*;
use adw::subclass::prelude::*;
use glib::{clone, Object};
@@ -16,8 +14,6 @@ use lan_mouse_ipc::{
DEFAULT_PORT,
};
use crate::{fingerprint_window::FingerprintWindow, key_object::KeyObject, key_row::KeyRow};
use super::{client_object::ClientObject, client_row::ClientRow};
glib::wrapper! {
@@ -46,55 +42,10 @@ impl Window {
.expect("Could not get clients")
}
pub fn authorized(&self) -> gio::ListStore {
self.imp()
.authorized
.borrow()
.clone()
.expect("Could not get authorized")
}
fn client_by_idx(&self, idx: u32) -> Option<ClientObject> {
self.clients().item(idx).map(|o| o.downcast().unwrap())
}
fn authorized_by_idx(&self, idx: u32) -> Option<KeyObject> {
self.authorized().item(idx).map(|o| o.downcast().unwrap())
}
fn setup_authorized(&self) {
let store = gio::ListStore::new::<KeyObject>();
self.imp().authorized.replace(Some(store));
let selection_model = NoSelection::new(Some(self.authorized()));
self.imp().authorized_list.bind_model(
Some(&selection_model),
clone!(
#[weak(rename_to = window)]
self,
#[upgrade_or_panic]
move |obj| {
let key_obj = obj.downcast_ref().expect("object of type `KeyObject`");
let row = window.create_key_row(key_obj);
row.connect_closure(
"request-delete",
false,
closure_local!(
#[strong]
window,
move |row: KeyRow| {
if let Some(key_obj) = window.authorized_by_idx(row.index() as u32)
{
window.request_fingerprint_remove(key_obj.get_fingerprint());
}
}
),
);
row.upcast()
}
),
)
}
fn setup_clients(&self) {
let model = gio::ListStore::new::<ClientObject>();
self.imp().clients.replace(Some(model));
@@ -163,8 +114,7 @@ impl Window {
/// 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) {
let visible = self.clients().n_items() == 0;
pub fn set_placeholder_visible(&self, visible: bool) {
let placeholder = self.imp().client_placeholder.get();
self.imp().client_list.set_placeholder(match visible {
true => Some(&placeholder),
@@ -172,15 +122,6 @@ impl Window {
});
}
pub 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 {
true => Some(&placeholder),
false => None,
});
}
fn setup_icon(&self) {
self.set_icon_name(Some("de.feschber.LanMouse"));
}
@@ -191,16 +132,10 @@ impl Window {
row
}
fn create_key_row(&self, key_object: &KeyObject) -> KeyRow {
let row = KeyRow::new();
row.bind(key_object);
row
}
pub 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.set_placeholder_visible(false);
self.update_dns_state(handle, !state.ips.is_empty());
}
@@ -222,7 +157,7 @@ impl Window {
self.clients().remove(idx as u32);
if self.clients().n_items() == 0 {
self.update_placeholder_visibility();
self.set_placeholder_visible(true);
}
}
@@ -351,32 +286,6 @@ impl Window {
self.request(FrontendRequest::Delete(client.handle()));
}
pub fn open_fingerprint_dialog(&self) {
let window = FingerprintWindow::new();
window.set_transient_for(Some(self));
window.connect_closure(
"confirm-clicked",
false,
closure_local!(
#[strong(rename_to = parent)]
self,
move |w: FingerprintWindow, desc: String, fp: String| {
parent.request_fingerprint_add(desc, fp);
w.close();
}
),
);
window.present();
}
pub fn request_fingerprint_add(&self, desc: String, fp: String) {
self.request(FrontendRequest::AuthorizeKey(desc, fp));
}
pub fn request_fingerprint_remove(&self, fp: String) {
self.request(FrontendRequest::RemoveAuthorizedKey(fp));
}
pub fn request(&self, request: FrontendRequest) {
let mut requester = self.imp().frontend_request_writer.borrow_mut();
let requester = requester.as_mut().unwrap();
@@ -410,20 +319,4 @@ impl Window {
.capture_emulation_group
.set_visible(!capture || !emulation);
}
pub(crate) fn set_authorized_keys(&self, fingerprints: HashMap<String, String>) {
let authorized = self.authorized();
// clear list
authorized.remove_all();
// insert fingerprints
for (fingerprint, description) in fingerprints {
let key_obj = KeyObject::new(description, fingerprint);
authorized.append(&key_obj);
}
self.update_auth_placeholder_visibility();
}
pub(crate) fn set_pk_fp(&self, fingerprint: &str) {
self.imp().fingerprint_row.set_subtitle(fingerprint);
}
}

View File

@@ -4,17 +4,13 @@ use adw::subclass::prelude::*;
use adw::{prelude::*, ActionRow, PreferencesGroup, ToastOverlay};
use glib::subclass::InitializingObject;
use gtk::glib::clone;
use gtk::{gdk, gio, glib, Button, CompositeTemplate, Entry, Image, Label, ListBox};
use gtk::{gdk, gio, glib, Button, CompositeTemplate, Entry, Label, ListBox};
use lan_mouse_ipc::{FrontendRequestWriter, DEFAULT_PORT};
#[derive(CompositeTemplate, Default)]
#[template(resource = "/de/feschber/LanMouse/window.ui")]
pub struct Window {
#[template_child]
pub authorized_placeholder: TemplateChild<ActionRow>,
#[template_child]
pub fingerprint_row: TemplateChild<ActionRow>,
#[template_child]
pub port_edit_apply: TemplateChild<Button>,
#[template_child]
@@ -26,8 +22,6 @@ pub struct Window {
#[template_child]
pub port_entry: TemplateChild<Entry>,
#[template_child]
pub hostname_copy_icon: TemplateChild<Image>,
#[template_child]
pub hostname_label: TemplateChild<Label>,
#[template_child]
pub toast_overlay: TemplateChild<ToastOverlay>,
@@ -41,10 +35,7 @@ pub struct Window {
pub input_emulation_button: TemplateChild<Button>,
#[template_child]
pub input_capture_button: TemplateChild<Button>,
#[template_child]
pub authorized_list: TemplateChild<ListBox>,
pub clients: RefCell<Option<gio::ListStore>>,
pub authorized: RefCell<Option<gio::ListStore>>,
pub frontend_request_writer: RefCell<Option<FrontendRequestWriter>>,
pub port: Cell<u16>,
pub capture_active: Cell<bool>,
@@ -78,45 +69,25 @@ impl Window {
}
#[template_callback]
fn handle_copy_hostname(&self, _: &Button) {
fn handle_copy_hostname(&self, button: &Button) {
if let Ok(hostname) = hostname::get() {
let display = gdk::Display::default().unwrap();
let clipboard = display.clipboard();
clipboard.set_text(hostname.to_str().expect("hostname: invalid utf8"));
let icon = self.hostname_copy_icon.clone();
icon.set_icon_name(Some("emblem-ok-symbolic"));
icon.set_css_classes(&["success"]);
button.set_icon_name("emblem-ok-symbolic");
button.set_css_classes(&["success"]);
glib::spawn_future_local(clone!(
#[weak]
icon,
button,
async move {
glib::timeout_future_seconds(1).await;
icon.set_icon_name(Some("edit-copy-symbolic"));
icon.set_css_classes(&[]);
button.set_icon_name("edit-copy-symbolic");
button.set_css_classes(&[]);
}
));
}
}
#[template_callback]
fn handle_copy_fingerprint(&self, button: &Button) {
let fingerprint: String = self.fingerprint_row.property("subtitle");
let display = gdk::Display::default().unwrap();
let clipboard = display.clipboard();
clipboard.set_text(&fingerprint);
button.set_icon_name("emblem-ok-symbolic");
button.set_css_classes(&["success"]);
glib::spawn_future_local(clone!(
#[weak]
button,
async move {
glib::timeout_future_seconds(1).await;
button.set_icon_name("edit-copy-symbolic");
button.set_css_classes(&[]);
}
));
}
#[template_callback]
fn handle_port_changed(&self, _entry: &Entry) {
self.port_edit_apply.set_visible(true);
@@ -147,11 +118,6 @@ impl Window {
self.obj().request_capture();
}
#[template_callback]
fn handle_add_cert_fingerprint(&self, _button: &Button) {
self.obj().open_fingerprint_dialog();
}
pub fn set_port(&self, port: u16) {
self.port.set(port);
if port == DEFAULT_PORT {
@@ -175,7 +141,6 @@ impl ObjectImpl for Window {
let obj = self.obj();
obj.setup_icon();
obj.setup_clients();
obj.setup_authorized();
}
}

View File

@@ -1,7 +1,7 @@
[package]
name = "lan-mouse-ipc"
description = "library for communication between lan-mouse service and frontends"
version = "0.2.0"
version = "0.1.0"
edition = "2021"
license = "GPL-3.0-or-later"
repository = "https://github.com/feschber/lan-mouse"
@@ -11,6 +11,6 @@ futures = "0.3.30"
log = "0.4.22"
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0.107"
thiserror = "2.0.0"
thiserror = "1.0.63"
tokio = { version = "1.32.0", features = ["net", "io-util", "time"] }
tokio-stream = { version = "0.1.15", features = ["io-util"] }

View File

@@ -1,5 +1,5 @@
use std::{
collections::{HashMap, HashSet},
collections::HashSet,
env::VarError,
fmt::Display,
io,
@@ -33,7 +33,7 @@ pub enum ConnectionError {
}
#[derive(Debug, Error)]
pub enum IpcListenerCreationError {
pub enum ListenerCreationError {
#[error("could not determine socket-path: `{0}`")]
SocketPath(#[from] SocketPathError),
#[error("service already running!")]
@@ -51,7 +51,7 @@ pub enum IpcError {
#[error(transparent)]
Connection(#[from] ConnectionError),
#[error(transparent)]
Listen(#[from] IpcListenerCreationError),
Listen(#[from] ListenerCreationError),
}
pub const DEFAULT_PORT: u16 = 4242;
@@ -65,17 +65,6 @@ pub enum Position {
Bottom,
}
impl Position {
pub fn opposite(&self) -> Self {
match self {
Position::Left => Position::Right,
Position::Right => Position::Left,
Position::Top => Position::Bottom,
Position::Bottom => Position::Top,
}
}
}
#[derive(Debug, Error)]
#[error("not a valid position: {pos}")]
pub struct PositionParseError {
@@ -161,7 +150,7 @@ pub struct ClientState {
/// This should generally be the socket address where data
/// was last received from.
pub active_addr: Option<SocketAddr>,
/// tracks whether or not the client is available for emulation
/// tracks whether or not the client is responding to pings
pub alive: bool,
/// ips from dns
pub dns_ips: Vec<IpAddr>,
@@ -197,14 +186,6 @@ pub enum FrontendEvent {
CaptureStatus(Status),
/// emulation status
EmulationStatus(Status),
/// authorized public key fingerprints have been updated
AuthorizedUpdated(HashMap<String, String>),
/// public key fingerprint of this device
PublicKeyFingerprint(String),
/// incoming connected
IncomingConnected(String, SocketAddr, Position),
/// incoming disconnected
IncomingDisconnected(SocketAddr),
}
#[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
@@ -237,13 +218,9 @@ pub enum FrontendRequest {
EnableEmulation,
/// synchronize all state
Sync,
/// authorize fingerprint (description, fingerprint)
AuthorizeKey(String, String),
/// remove fingerprint (fingerprint)
RemoveAuthorizedKey(String),
}
#[derive(Clone, Copy, PartialEq, Eq, Debug, Default, Serialize, Deserialize)]
#[derive(Clone, Copy, Debug, Default, Serialize, Deserialize)]
pub enum Status {
#[default]
Disabled,

View File

@@ -20,7 +20,7 @@ use tokio::net::TcpListener;
#[cfg(windows)]
use tokio::net::TcpStream;
use crate::{FrontendEvent, FrontendRequest, IpcError, IpcListenerCreationError};
use crate::{FrontendEvent, FrontendRequest, IpcError, ListenerCreationError};
pub struct AsyncFrontendListener {
#[cfg(windows)]
@@ -40,7 +40,7 @@ pub struct AsyncFrontendListener {
}
impl AsyncFrontendListener {
pub async fn new() -> Result<Self, IpcListenerCreationError> {
pub async fn new() -> Result<Self, ListenerCreationError> {
#[cfg(unix)]
let (socket_path, listener) = {
let socket_path = crate::default_socket_path()?;
@@ -51,7 +51,7 @@ impl AsyncFrontendListener {
// of lan-mouse is already running
match UnixStream::connect(&socket_path).await {
// connected -> lan-mouse is already running
Ok(_) => return Err(IpcListenerCreationError::AlreadyRunning),
Ok(_) => return Err(ListenerCreationError::AlreadyRunning),
// lan-mouse is not running but a socket was left behind
Err(e) => {
log::debug!("{socket_path:?}: {e} - removing left behind socket");
@@ -63,9 +63,9 @@ 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(ListenerCreationError::AlreadyRunning)
}
Err(e) => return Err(IpcListenerCreationError::Bind(e)),
Err(e) => return Err(ListenerCreationError::Bind(e)),
};
(socket_path, listener)
};
@@ -75,9 +75,9 @@ 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(ListenerCreationError::AlreadyRunning)
}
Err(e) => return Err(IpcListenerCreationError::Bind(e)),
Err(e) => return Err(ListenerCreationError::Bind(e)),
};
let adapter = Self {

View File

@@ -1,13 +1,13 @@
[package]
name = "lan-mouse-proto"
description = "network protocol for lan-mouse"
version = "0.2.0"
version = "0.1.0"
edition = "2021"
license = "GPL-3.0-or-later"
repository = "https://github.com/feschber/lan-mouse"
[dependencies]
num_enum = "0.7.2"
thiserror = "2.0.0"
input-event = { path = "../input-event", version = "0.3.0" }
thiserror = "1.0.61"
input-event = { path = "../input-event", version = "0.2.1" }
paste = "1.0"

View File

@@ -2,7 +2,7 @@ use input_event::{Event as InputEvent, KeyboardEvent, PointerEvent};
use num_enum::{IntoPrimitive, TryFromPrimitive, TryFromPrimitiveError};
use paste::paste;
use std::{
fmt::{Debug, Display, Formatter},
fmt::{Debug, Display},
mem::size_of,
};
use thiserror::Error;
@@ -18,39 +18,14 @@ pub enum ProtocolError {
/// event type does not exist
#[error("invalid event id: `{0}`")]
InvalidEventId(#[from] TryFromPrimitiveError<EventType>),
/// position type does not exist
#[error("invalid event id: `{0}`")]
InvalidPosition(#[from] TryFromPrimitiveError<Position>),
}
/// Position of a client
#[derive(Clone, Copy, Debug, TryFromPrimitive, IntoPrimitive)]
#[repr(u8)]
pub enum Position {
Left,
Right,
Top,
Bottom,
}
impl Display for Position {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
let pos = match self {
Position::Left => "left",
Position::Right => "right",
Position::Top => "top",
Position::Bottom => "bottom",
};
write!(f, "{pos}")
}
}
/// main lan-mouse protocol event type
#[derive(Clone, Copy, Debug)]
pub enum ProtoEvent {
/// notify a client that the cursor entered its region at the given position
/// notify a client that the cursor entered its region
/// [`ProtoEvent::Ack`] with the same serial is used for synchronization between devices
Enter(Position),
Enter(u32),
/// notify a client that the cursor left its region
/// [`ProtoEvent::Ack`] with the same serial is used for synchronization between devices
Leave(u32),
@@ -61,25 +36,19 @@ pub enum ProtoEvent {
/// Ping event for tracking unresponsive clients.
/// A client has to respond with [`ProtoEvent::Pong`].
Ping,
/// Response to [`ProtoEvent::Ping`], true if emulation is enabled / available
Pong(bool),
/// Response to [`ProtoEvent::Ping`]
Pong,
}
impl Display for ProtoEvent {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
ProtoEvent::Enter(s) => write!(f, "Enter({s})"),
ProtoEvent::Leave(s) => write!(f, "Leave({s})"),
ProtoEvent::Ack(s) => write!(f, "Ack({s})"),
ProtoEvent::Input(e) => write!(f, "{e}"),
ProtoEvent::Ping => write!(f, "ping"),
ProtoEvent::Pong(alive) => {
write!(
f,
"pong: {}",
if *alive { "alive" } else { "not available" }
)
}
ProtoEvent::Pong => write!(f, "pong"),
}
}
}
@@ -116,7 +85,7 @@ impl ProtoEvent {
},
},
ProtoEvent::Ping => EventType::Ping,
ProtoEvent::Pong(_) => EventType::Pong,
ProtoEvent::Pong => EventType::Pong,
ProtoEvent::Enter(_) => EventType::Enter,
ProtoEvent::Leave(_) => EventType::Leave,
ProtoEvent::Ack(_) => EventType::Ack,
@@ -170,8 +139,8 @@ impl TryFrom<[u8; MAX_EVENT_SIZE]> for ProtoEvent {
},
))),
EventType::Ping => Ok(Self::Ping),
EventType::Pong => Ok(Self::Pong(decode_u8(&mut buf)? != 0)),
EventType::Enter => Ok(Self::Enter(decode_u8(&mut buf)?.try_into()?)),
EventType::Pong => Ok(Self::Pong),
EventType::Enter => Ok(Self::Enter(decode_u32(&mut buf)?)),
EventType::Leave => Ok(Self::Leave(decode_u32(&mut buf)?)),
EventType::Ack => Ok(Self::Ack(decode_u32(&mut buf)?)),
}
@@ -234,8 +203,8 @@ impl From<ProtoEvent> for ([u8; MAX_EVENT_SIZE], usize) {
},
},
ProtoEvent::Ping => {}
ProtoEvent::Pong(alive) => encode_u8(buf, len, alive as u8),
ProtoEvent::Enter(pos) => encode_u8(buf, len, pos as u8),
ProtoEvent::Pong => {}
ProtoEvent::Enter(serial) => encode_u32(buf, len, serial),
ProtoEvent::Leave(serial) => encode_u32(buf, len, serial),
ProtoEvent::Ack(serial) => encode_u32(buf, len, serial),
}

View File

@@ -44,9 +44,6 @@ rustPlatform.buildRustPackage {
postInstall = ''
wrapProgram "$out/bin/lan-mouse" \
--set GDK_PIXBUF_MODULE_FILE ${pkgs.librsvg.out}/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache
install -Dm444 *.desktop -t $out/share/applications
install -Dm444 lan-mouse-gtk/resources/*.svg -t $out/share/icons/hicolor/scalable/apps
'';
meta = with lib; {

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@@ -1,418 +0,0 @@
use std::{
cell::{Cell, RefCell},
rc::Rc,
time::{Duration, Instant},
};
use futures::StreamExt;
use input_capture::{
CaptureError, CaptureEvent, CaptureHandle, InputCapture, InputCaptureError, Position,
};
use input_event::scancode;
use lan_mouse_proto::ProtoEvent;
use local_channel::mpsc::{channel, Receiver, Sender};
use tokio::task::{spawn_local, JoinHandle};
use tokio_util::sync::CancellationToken;
use crate::connect::LanMouseConnection;
pub(crate) struct Capture {
cancellation_token: CancellationToken,
request_tx: Sender<CaptureRequest>,
task: JoinHandle<()>,
event_rx: Receiver<ICaptureEvent>,
}
pub(crate) enum ICaptureEvent {
/// a client was entered
CaptureBegin(CaptureHandle),
/// capture disabled
CaptureDisabled,
/// capture disabled
CaptureEnabled,
/// A (new) client was entered.
/// In contrast to [`ICaptureEvent::CaptureBegin`] this
/// event is only triggered when the capture was
/// explicitly released in the meantime by
/// either the remote client leaving its device region,
/// a new device entering the screen or the release bind.
ClientEntered(u64),
}
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub(crate) enum CaptureType {
/// a normal input capture
Default,
/// A capture only interested in [`CaptureEvent::Begin`] events.
/// The capture is released immediately, if there is no
/// Default capture at the same position.
EnterOnly,
}
#[derive(Clone, Copy, Debug)]
enum CaptureRequest {
/// capture must release the mouse
Release,
/// add a capture client
Create(CaptureHandle, Position, CaptureType),
/// destory a capture client
Destroy(CaptureHandle),
/// reenable input capture
Reenable,
}
impl Capture {
pub(crate) fn new(
backend: Option<input_capture::Backend>,
conn: LanMouseConnection,
release_bind: Vec<scancode::Linux>,
) -> Self {
let (request_tx, request_rx) = channel();
let (event_tx, event_rx) = channel();
let cancellation_token = CancellationToken::new();
let capture_task = CaptureTask {
active_client: None,
backend,
cancellation_token: cancellation_token.clone(),
captures: Default::default(),
conn,
event_tx,
request_rx,
release_bind: Rc::new(RefCell::new(release_bind)),
state: Default::default(),
};
let task = spawn_local(capture_task.run());
Self {
cancellation_token,
request_tx,
task,
event_rx,
}
}
pub(crate) fn reenable(&self) {
self.request_tx
.send(CaptureRequest::Reenable)
.expect("channel closed");
}
pub(crate) async fn terminate(&mut self) {
self.cancellation_token.cancel();
log::debug!("terminating capture");
if let Err(e) = (&mut self.task).await {
log::warn!("{e}");
}
}
pub(crate) fn create(
&self,
handle: CaptureHandle,
pos: lan_mouse_ipc::Position,
capture_type: CaptureType,
) {
let pos = to_capture_pos(pos);
self.request_tx
.send(CaptureRequest::Create(handle, pos, capture_type))
.expect("channel closed");
}
pub(crate) fn destroy(&self, handle: CaptureHandle) {
self.request_tx
.send(CaptureRequest::Destroy(handle))
.expect("channel closed");
}
pub(crate) fn release(&self) {
self.request_tx
.send(CaptureRequest::Release)
.expect("channel closed");
}
pub(crate) async fn event(&mut self) -> ICaptureEvent {
self.event_rx.recv().await.expect("channel closed")
}
}
/// debounce a statement `$st`, i.e. the statement is executed only if the
/// time since the previous execution is at least `$dur`.
/// `$prev` is used to keep track of this timestamp
macro_rules! debounce {
($prev:ident, $dur:expr, $st:stmt) => {
let exec = match $prev.get() {
None => true,
Some(instant) if instant.elapsed() > $dur => true,
_ => false,
};
if exec {
$prev.replace(Some(Instant::now()));
$st
}
};
}
struct CaptureTask {
active_client: Option<CaptureHandle>,
backend: Option<input_capture::Backend>,
cancellation_token: CancellationToken,
captures: Vec<(CaptureHandle, Position, CaptureType)>,
conn: LanMouseConnection,
event_tx: Sender<ICaptureEvent>,
release_bind: Rc<RefCell<Vec<scancode::Linux>>>,
request_rx: Receiver<CaptureRequest>,
state: State,
}
impl CaptureTask {
fn add_capture(&mut self, handle: CaptureHandle, pos: Position, capture_type: CaptureType) {
self.captures.push((handle, pos, capture_type));
}
fn remove_capture(&mut self, handle: CaptureHandle) {
self.captures.retain(|&(h, ..)| handle != h);
}
fn is_default_capture_at(&self, pos: Position) -> bool {
self.captures
.iter()
.any(|&(_, p, t)| p == pos && t == CaptureType::Default)
}
fn get_pos(&self, handle: CaptureHandle) -> Position {
self.captures
.iter()
.find(|(h, ..)| *h == handle)
.expect("no such capture")
.1
}
fn get_type(&self, handle: CaptureHandle) -> CaptureType {
self.captures
.iter()
.find(|(h, ..)| *h == handle)
.expect("no such capture")
.2
}
async fn run(mut self) {
loop {
if let Err(e) = self.do_capture().await {
log::warn!("input capture exited: {e}");
}
loop {
tokio::select! {
r = self.request_rx.recv() => match r.expect("channel closed") {
CaptureRequest::Reenable => break,
CaptureRequest::Create(h, p, t) => self.add_capture(h, p, t),
CaptureRequest::Destroy(h) => self.remove_capture(h),
CaptureRequest::Release => { /* nothing to do */ }
},
_ = self.cancellation_token.cancelled() => return,
}
}
}
}
async fn do_capture(&mut self) -> Result<(), InputCaptureError> {
/* allow cancelling capture request */
let mut capture = tokio::select! {
r = InputCapture::new(self.backend) => r?,
_ = self.cancellation_token.cancelled() => return Ok(()),
};
let _capture_guard = DropGuard::new(
self.event_tx.clone(),
ICaptureEvent::CaptureEnabled,
ICaptureEvent::CaptureDisabled,
);
/* create barriers for active clients */
let r = self.create_captures(&mut capture).await;
if let Err(e) = r {
capture.terminate().await?;
return Err(e.into());
}
let r = self.do_capture_session(&mut capture).await;
// FIXME replace with async drop when stabilized
capture.terminate().await?;
r
}
async fn create_captures(&mut self, capture: &mut InputCapture) -> Result<(), CaptureError> {
let captures = self.captures.clone();
for (handle, pos, _type) in captures {
tokio::select! {
r = capture.create(handle, pos) => r?,
_ = self.cancellation_token.cancelled() => return Ok(()),
}
}
Ok(())
}
async fn do_capture_session(
&mut self,
capture: &mut InputCapture,
) -> Result<(), InputCaptureError> {
loop {
tokio::select! {
event = capture.next() => match event {
Some(event) => self.handle_capture_event(capture, event?).await?,
None => return Ok(()),
},
(handle, event) = self.conn.recv() => {
if let Some(active) = self.active_client {
if handle != active {
// we only care about events coming from the client we are currently connected to
// only `Ack` and `Leave` are relevant
continue
}
}
match event {
// connection acknowlegded => set state to Sending
ProtoEvent::Ack(_) => {
log::info!("client {handle} acknowledged the connection!");
self.state = State::Sending;
}
// client disconnected
ProtoEvent::Leave(_) => {
log::info!("releasing capture: left remote client device region");
self.release_capture(capture).await?;
},
_ => {}
}
},
e = self.request_rx.recv() => match e.expect("channel closed") {
CaptureRequest::Reenable => { /* already active */ },
CaptureRequest::Release => self.release_capture(capture).await?,
CaptureRequest::Create(h, p, t) => {
self.add_capture(h, p, t);
capture.create(h, p).await?;
}
CaptureRequest::Destroy(h) => {
self.remove_capture(h);
capture.destroy(h).await?;
}
},
_ = self.cancellation_token.cancelled() => break,
}
}
Ok(())
}
async fn handle_capture_event(
&mut self,
capture: &mut InputCapture,
event: (CaptureHandle, CaptureEvent),
) -> Result<(), CaptureError> {
let (handle, event) = event;
log::trace!("({handle}): {event:?}");
if capture.keys_pressed(&self.release_bind.borrow()) {
log::info!("releasing capture: release-bind pressed");
return self.release_capture(capture).await;
}
if event == CaptureEvent::Begin {
self.event_tx
.send(ICaptureEvent::CaptureBegin(handle))
.expect("channel closed");
}
// enter only capture (for incoming connections)
if self.get_type(handle) == CaptureType::EnterOnly {
// if there is no active outgoing connection at the current capture,
// we release the capture
if !self.is_default_capture_at(self.get_pos(handle)) {
log::info!("releasing capture: no active client at this position");
capture.release().await?;
}
// we dont care about events from incoming handles except for releasing the capture
return Ok(());
}
// activated a new client
if event == CaptureEvent::Begin && Some(handle) != self.active_client {
self.state = State::WaitingForAck;
self.active_client.replace(handle);
self.event_tx
.send(ICaptureEvent::ClientEntered(handle))
.expect("channel closed");
}
let opposite_pos = to_proto_pos(self.get_pos(handle).opposite());
let event = match event {
CaptureEvent::Begin => ProtoEvent::Enter(opposite_pos),
CaptureEvent::Input(e) => match self.state {
// connection not acknowledged, repeat `Enter` event
State::WaitingForAck => ProtoEvent::Enter(opposite_pos),
State::Sending => ProtoEvent::Input(e),
},
};
if let Err(e) = self.conn.send(event, handle).await {
const DUR: Duration = Duration::from_millis(500);
debounce!(PREV_LOG, DUR, log::warn!("releasing capture: {e}"));
capture.release().await?;
}
Ok(())
}
async fn release_capture(&mut self, capture: &mut InputCapture) -> Result<(), CaptureError> {
self.active_client.take();
capture.release().await
}
}
thread_local! {
static PREV_LOG: Cell<Option<Instant>> = const { Cell::new(None) };
}
#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
enum State {
#[default]
WaitingForAck,
Sending,
}
fn to_capture_pos(pos: lan_mouse_ipc::Position) -> input_capture::Position {
match pos {
lan_mouse_ipc::Position::Left => input_capture::Position::Left,
lan_mouse_ipc::Position::Right => input_capture::Position::Right,
lan_mouse_ipc::Position::Top => input_capture::Position::Top,
lan_mouse_ipc::Position::Bottom => input_capture::Position::Bottom,
}
}
fn to_proto_pos(pos: input_capture::Position) -> lan_mouse_proto::Position {
match pos {
input_capture::Position::Left => lan_mouse_proto::Position::Left,
input_capture::Position::Right => lan_mouse_proto::Position::Right,
input_capture::Position::Top => lan_mouse_proto::Position::Top,
input_capture::Position::Bottom => lan_mouse_proto::Position::Bottom,
}
}
struct DropGuard<T> {
tx: Sender<T>,
on_drop: Option<T>,
}
impl<T> DropGuard<T> {
fn new(tx: Sender<T>, on_new: T, on_drop: T) -> Self {
tx.send(on_new).expect("channel closed");
let on_drop = Some(on_drop);
Self { tx, on_drop }
}
}
impl<T> Drop for DropGuard<T> {
fn drop(&mut self) {
self.tx
.send(self.on_drop.take().expect("item"))
.expect("channel closed");
}
}

View File

@@ -11,7 +11,6 @@ pub async fn run(config: Config) -> Result<(), InputCaptureError> {
let mut input_capture = InputCapture::new(backend).await?;
log::info!("creating clients");
input_capture.create(0, Position::Left).await?;
input_capture.create(4, Position::Left).await?;
input_capture.create(1, Position::Right).await?;
input_capture.create(2, Position::Top).await?;
input_capture.create(3, Position::Bottom).await?;
@@ -29,13 +28,12 @@ async fn do_capture(input_capture: &mut InputCapture) -> Result<(), CaptureError
.await
.ok_or(CaptureError::EndOfStream)??;
let pos = match client {
0 | 4 => Position::Left,
0 => Position::Left,
1 => Position::Right,
2 => Position::Top,
3 => Position::Bottom,
_ => panic!(),
_ => Position::Bottom,
};
log::info!("position: {client} ({pos}), event: {event}");
log::info!("position: {pos}, event: {event}");
if let CaptureEvent::Input(Event::Keyboard(KeyboardEvent::Key { key: 1, .. })) = event {
input_capture.release().await?;
break Ok(());

View File

@@ -1,63 +1,18 @@
use std::{
cell::RefCell,
collections::HashSet,
net::{IpAddr, SocketAddr},
rc::Rc,
};
use std::net::SocketAddr;
use slab::Slab;
use lan_mouse_ipc::{ClientConfig, ClientHandle, ClientState, Position};
#[derive(Clone, Default)]
#[derive(Default)]
pub struct ClientManager {
clients: Rc<RefCell<Slab<(ClientConfig, ClientState)>>>,
clients: Slab<(ClientConfig, ClientState)>,
}
impl ClientManager {
/// add a new client to this manager
pub fn add_client(&self) -> ClientHandle {
self.clients.borrow_mut().insert(Default::default()) as ClientHandle
}
/// set the config of the given client
pub fn set_config(&self, handle: ClientHandle, config: ClientConfig) {
if let Some((c, _)) = self.clients.borrow_mut().get_mut(handle as usize) {
*c = config;
}
}
/// set the state of the given client
pub fn set_state(&self, handle: ClientHandle, state: ClientState) {
if let Some((_, s)) = self.clients.borrow_mut().get_mut(handle as usize) {
*s = state;
}
}
/// activate the given client
/// returns, whether the client was activated
pub fn activate_client(&self, handle: ClientHandle) -> bool {
let mut clients = self.clients.borrow_mut();
match clients.get_mut(handle as usize) {
Some((_, s)) if !s.active => {
s.active = true;
true
}
_ => false,
}
}
/// deactivate the given client
/// returns, whether the client was deactivated
pub fn deactivate_client(&self, handle: ClientHandle) -> bool {
let mut clients = self.clients.borrow_mut();
match clients.get_mut(handle as usize) {
Some((_, s)) if s.active => {
s.active = false;
true
}
_ => false,
}
pub fn add_client(&mut self) -> ClientHandle {
self.clients.insert(Default::default()) as ClientHandle
}
/// find a client by its address
@@ -65,7 +20,6 @@ impl ClientManager {
// since there shouldn't be more than a handful of clients at any given
// time this is likely faster than using a HashMap
self.clients
.borrow()
.iter()
.find_map(|(k, (_, s))| {
if s.active && s.ips.contains(&addr.ip()) {
@@ -77,10 +31,8 @@ impl ClientManager {
.map(|p| p as ClientHandle)
}
/// get the client at the given position
pub fn client_at(&self, pos: Position) -> Option<ClientHandle> {
pub fn find_client(&self, pos: Position) -> Option<ClientHandle> {
self.clients
.borrow()
.iter()
.find_map(|(k, (c, s))| {
if s.active && c.pos == pos {
@@ -92,176 +44,31 @@ impl ClientManager {
.map(|p| p as ClientHandle)
}
pub(crate) fn get_hostname(&self, handle: ClientHandle) -> Option<String> {
self.clients
.borrow_mut()
.get_mut(handle as usize)
.and_then(|(c, _)| c.hostname.clone())
}
/// get the position of the corresponding client
pub(crate) fn get_pos(&self, handle: ClientHandle) -> Option<Position> {
self.clients
.borrow()
.get(handle as usize)
.map(|(c, _)| c.pos)
}
/// remove a client from the list
pub fn remove_client(&self, client: ClientHandle) -> Option<(ClientConfig, ClientState)> {
pub fn remove_client(&mut self, client: ClientHandle) -> Option<(ClientConfig, ClientState)> {
// remove id from occupied ids
self.clients.borrow_mut().try_remove(client as usize)
self.clients.try_remove(client as usize)
}
/// get the config & state of the given client
pub fn get_state(&self, handle: ClientHandle) -> Option<(ClientConfig, ClientState)> {
self.clients.borrow().get(handle as usize).cloned()
// returns an immutable reference to the client state corresponding to `client`
pub fn get(&self, handle: ClientHandle) -> Option<&(ClientConfig, ClientState)> {
self.clients.get(handle as usize)
}
/// get the current config & state of all clients
pub fn get_client_states(&self) -> Vec<(ClientHandle, ClientConfig, ClientState)> {
self.clients
.borrow()
.iter()
.map(|(k, v)| (k as ClientHandle, v.0.clone(), v.1.clone()))
.collect()
/// returns a mutable reference to the client state corresponding to `client`
pub fn get_mut(&mut self, handle: ClientHandle) -> Option<&mut (ClientConfig, ClientState)> {
self.clients.get_mut(handle as usize)
}
/// update the fix ips of the client
pub fn set_fix_ips(&self, handle: ClientHandle, fix_ips: Vec<IpAddr>) {
if let Some((c, _)) = self.clients.borrow_mut().get_mut(handle as usize) {
c.fix_ips = fix_ips
}
self.update_ips(handle);
pub fn get_client_states(
&self,
) -> impl Iterator<Item = (ClientHandle, &(ClientConfig, ClientState))> {
self.clients.iter().map(|(k, v)| (k as ClientHandle, v))
}
/// update the dns-ips of the client
pub fn set_dns_ips(&self, handle: ClientHandle, dns_ips: Vec<IpAddr>) {
if let Some((_, s)) = self.clients.borrow_mut().get_mut(handle as usize) {
s.dns_ips = dns_ips
}
self.update_ips(handle);
}
fn update_ips(&self, handle: ClientHandle) {
if let Some((c, s)) = self.clients.borrow_mut().get_mut(handle as usize) {
s.ips = c
.fix_ips
.iter()
.cloned()
.chain(s.dns_ips.iter().cloned())
.collect::<HashSet<_>>();
}
}
/// update the hostname of the given client
/// this automatically clears the active ip address and ips from dns
pub fn set_hostname(&self, handle: ClientHandle, hostname: Option<String>) -> bool {
let mut clients = self.clients.borrow_mut();
let Some((c, s)) = clients.get_mut(handle as usize) else {
return false;
};
// hostname changed
if c.hostname != hostname {
c.hostname = hostname;
s.active_addr = None;
s.dns_ips.clear();
drop(clients);
self.update_ips(handle);
true
} else {
false
}
}
/// update the port of the client
pub(crate) fn set_port(&self, handle: ClientHandle, port: u16) {
match self.clients.borrow_mut().get_mut(handle as usize) {
Some((c, s)) if c.port != port => {
c.port = port;
s.active_addr = s.active_addr.map(|a| SocketAddr::new(a.ip(), port));
}
_ => {}
};
}
/// update the position of the client
/// returns true, if a change in capture position is required (pos changed & client is active)
pub(crate) fn set_pos(&self, handle: ClientHandle, pos: Position) -> bool {
match self.clients.borrow_mut().get_mut(handle as usize) {
Some((c, s)) if c.pos != pos => {
log::info!("update pos {handle} {} -> {}", c.pos, pos);
c.pos = pos;
s.active
}
_ => false,
}
}
/// 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) {
s.resolving = status;
}
}
/// get the enter hook command
pub(crate) fn get_enter_cmd(&self, handle: ClientHandle) -> Option<String> {
self.clients
.borrow()
.get(handle as usize)
.and_then(|(c, _)| c.cmd.clone())
}
/// returns all clients that are currently active
pub(crate) fn active_clients(&self) -> Vec<ClientHandle> {
self.clients
.borrow()
.iter()
.filter(|(_, (_, s))| s.active)
.map(|(h, _)| h as ClientHandle)
.collect()
}
pub(crate) fn set_active_addr(&self, handle: ClientHandle, addr: Option<SocketAddr>) {
if let Some((_, s)) = self.clients.borrow_mut().get_mut(handle as usize) {
s.active_addr = addr;
}
}
pub(crate) fn set_alive(&self, handle: ClientHandle, alive: bool) {
if let Some((_, s)) = self.clients.borrow_mut().get_mut(handle as usize) {
s.alive = alive;
}
}
pub(crate) fn active_addr(&self, handle: ClientHandle) -> Option<SocketAddr> {
self.clients
.borrow()
.get(handle as usize)
.and_then(|(_, s)| s.active_addr)
}
pub(crate) fn alive(&self, handle: ClientHandle) -> bool {
self.clients
.borrow()
.get(handle as usize)
.map(|(_, s)| s.alive)
.unwrap_or(false)
}
pub(crate) fn get_port(&self, handle: ClientHandle) -> Option<u16> {
self.clients
.borrow()
.get(handle as usize)
.map(|(c, _)| c.port)
}
pub(crate) fn get_ips(&self, handle: ClientHandle) -> Option<HashSet<IpAddr>> {
self.clients
.borrow()
.get(handle as usize)
.map(|(_, s)| s.ips.clone())
pub fn get_client_states_mut(
&mut self,
) -> impl Iterator<Item = (ClientHandle, &mut (ClientConfig, ClientState))> {
self.clients.iter_mut().map(|(k, v)| (k as ClientHandle, v))
}
}

View File

@@ -1,11 +1,9 @@
use clap::{Parser, ValueEnum};
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::env::{self, VarError};
use std::fmt::Display;
use std::fs;
use std::net::IpAddr;
use std::path::{Path, PathBuf};
use std::{collections::HashSet, io};
use thiserror::Error;
use toml;
@@ -17,10 +15,6 @@ use input_event::scancode::{
Linux::{KeyLeftAlt, KeyLeftCtrl, KeyLeftMeta, KeyLeftShift},
};
use shadow_rs::shadow;
shadow!(build);
#[derive(Serialize, Deserialize, Debug)]
pub struct ConfigToml {
pub capture_backend: Option<CaptureBackend>,
@@ -28,12 +22,10 @@ pub struct ConfigToml {
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>>,
}
#[derive(Serialize, Deserialize, Debug, Eq, PartialEq)]
@@ -48,14 +40,15 @@ pub struct TomlClient {
}
impl ConfigToml {
pub fn new(path: &Path) -> Result<ConfigToml, ConfigError> {
pub fn new(path: &str) -> Result<ConfigToml, ConfigError> {
let config = fs::read_to_string(path)?;
log::info!("using config: \"{path}\"");
Ok(toml::from_str::<_>(&config)?)
}
}
#[derive(Parser, Debug)]
#[command(author, version=build::CLAP_LONG_VERSION, about, long_about = None)]
#[command(author, version=env!("GIT_DESCRIBE"), about, long_about = None)]
struct CliArgs {
/// the listen port for lan-mouse
#[arg(short, long)]
@@ -88,41 +81,31 @@ struct CliArgs {
/// emulation backend override
#[arg(long)]
emulation_backend: Option<EmulationBackend>,
/// path to non-default certificate location
#[arg(long)]
cert_path: Option<PathBuf>,
}
#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize, ValueEnum)]
pub enum CaptureBackend {
#[cfg(all(unix, feature = "libei_capture", not(target_os = "macos")))]
#[serde(rename = "input-capture-portal")]
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
InputCapturePortal,
#[cfg(all(unix, feature = "layer_shell_capture", not(target_os = "macos")))]
#[serde(rename = "layer-shell")]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
LayerShell,
#[cfg(all(unix, feature = "x11_capture", not(target_os = "macos")))]
#[serde(rename = "x11")]
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
X11,
#[cfg(windows)]
#[serde(rename = "windows")]
Windows,
#[cfg(target_os = "macos")]
#[serde(rename = "macos")]
MacOs,
#[serde(rename = "dummy")]
Dummy,
}
impl Display for CaptureBackend {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
#[cfg(all(unix, feature = "libei_capture", not(target_os = "macos")))]
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
CaptureBackend::InputCapturePortal => write!(f, "input-capture-portal"),
#[cfg(all(unix, feature = "layer_shell_capture", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
CaptureBackend::LayerShell => write!(f, "layer-shell"),
#[cfg(all(unix, feature = "x11_capture", not(target_os = "macos")))]
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
CaptureBackend::X11 => write!(f, "X11"),
#[cfg(windows)]
CaptureBackend::Windows => write!(f, "windows"),
@@ -136,11 +119,11 @@ impl Display for CaptureBackend {
impl From<CaptureBackend> for input_capture::Backend {
fn from(backend: CaptureBackend) -> Self {
match backend {
#[cfg(all(unix, feature = "libei_capture", not(target_os = "macos")))]
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
CaptureBackend::InputCapturePortal => Self::InputCapturePortal,
#[cfg(all(unix, feature = "layer_shell_capture", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
CaptureBackend::LayerShell => Self::LayerShell,
#[cfg(all(unix, feature = "x11_capture", not(target_os = "macos")))]
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
CaptureBackend::X11 => Self::X11,
#[cfg(windows)]
CaptureBackend::Windows => Self::Windows,
@@ -153,38 +136,31 @@ impl From<CaptureBackend> for input_capture::Backend {
#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize, ValueEnum)]
pub enum EmulationBackend {
#[cfg(all(unix, feature = "wlroots_emulation", not(target_os = "macos")))]
#[serde(rename = "wlroots")]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
Wlroots,
#[cfg(all(unix, feature = "libei_emulation", not(target_os = "macos")))]
#[serde(rename = "libei")]
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
Libei,
#[cfg(all(unix, feature = "rdp_emulation", not(target_os = "macos")))]
#[serde(rename = "xdp")]
#[cfg(all(unix, feature = "xdg_desktop_portal", not(target_os = "macos")))]
Xdp,
#[cfg(all(unix, feature = "x11_emulation", not(target_os = "macos")))]
#[serde(rename = "x11")]
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
X11,
#[cfg(windows)]
#[serde(rename = "windows")]
Windows,
#[cfg(target_os = "macos")]
#[serde(rename = "macos")]
MacOs,
#[serde(rename = "dummy")]
Dummy,
}
impl From<EmulationBackend> for input_emulation::Backend {
fn from(backend: EmulationBackend) -> Self {
match backend {
#[cfg(all(unix, feature = "wlroots_emulation", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
EmulationBackend::Wlroots => Self::Wlroots,
#[cfg(all(unix, feature = "libei_emulation", not(target_os = "macos")))]
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
EmulationBackend::Libei => Self::Libei,
#[cfg(all(unix, feature = "rdp_emulation", not(target_os = "macos")))]
#[cfg(all(unix, feature = "xdg_desktop_portal", not(target_os = "macos")))]
EmulationBackend::Xdp => Self::Xdp,
#[cfg(all(unix, feature = "x11_emulation", not(target_os = "macos")))]
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
EmulationBackend::X11 => Self::X11,
#[cfg(windows)]
EmulationBackend::Windows => Self::Windows,
@@ -198,13 +174,13 @@ impl From<EmulationBackend> for input_emulation::Backend {
impl Display for EmulationBackend {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
#[cfg(all(unix, feature = "wlroots_emulation", not(target_os = "macos")))]
#[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
EmulationBackend::Wlroots => write!(f, "wlroots"),
#[cfg(all(unix, feature = "libei_emulation", not(target_os = "macos")))]
#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
EmulationBackend::Libei => write!(f, "libei"),
#[cfg(all(unix, feature = "rdp_emulation", not(target_os = "macos")))]
#[cfg(all(unix, feature = "xdg_desktop_portal", not(target_os = "macos")))]
EmulationBackend::Xdp => write!(f, "xdg-desktop-portal"),
#[cfg(all(unix, feature = "x11_emulation", not(target_os = "macos")))]
#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
EmulationBackend::X11 => write!(f, "X11"),
#[cfg(windows)]
EmulationBackend::Windows => write!(f, "windows"),
@@ -217,9 +193,7 @@ impl Display for EmulationBackend {
#[derive(Clone, Copy, Debug, Deserialize, PartialEq, Eq, Serialize, ValueEnum)]
pub enum Frontend {
#[serde(rename = "gtk")]
Gtk,
#[serde(rename = "cli")]
Cli,
}
@@ -235,30 +209,15 @@ impl Default for Frontend {
#[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,
}
pub struct ConfigClient {
@@ -286,32 +245,27 @@ 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";
let config_file = "config.toml";
#[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/")
format!("{xdg_config_home}/lan-mouse/{config_file}")
};
#[cfg(not(unix))]
let config_path = {
let app_data =
env::var("LOCALAPPDATA").unwrap_or(format!("{}/.config", env::var("USERPROFILE")?));
format!("{app_data}\\lan-mouse\\")
format!("{app_data}\\lan-mouse\\{config_file}")
};
let config_path = PathBuf::from(config_path);
let config_file = config_path.join(CONFIG_FILE_NAME);
// --config <file> overrules default location
let config_file = args.config.map(PathBuf::from).unwrap_or(config_file);
let config_path = args.config.unwrap_or(config_path);
let mut config_toml = match ConfigToml::new(&config_file) {
let config_toml = match ConfigToml::new(config_path.as_str()) {
Err(e) => {
log::warn!("{config_file:?}: {e}");
log::warn!("{config_path}: {e}");
log::warn!("Continuing without config file ...");
None
}
@@ -341,16 +295,6 @@ impl Config {
.emulation_backend
.or(config_toml.as_ref().and_then(|c| c.emulation_backend));
let cert_path = args
.cert_path
.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 {
@@ -373,8 +317,6 @@ impl Config {
let test_emulation = args.test_emulation;
Ok(Config {
path: config_path,
authorized_fingerprints,
capture_backend,
emulation_backend,
daemon,
@@ -384,7 +326,6 @@ impl Config {
release_bind,
test_capture,
test_emulation,
cert_path,
})
}

View File

@@ -1,281 +0,0 @@
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 std::{
cell::RefCell,
collections::{HashMap, HashSet},
io,
net::SocketAddr,
rc::Rc,
sync::Arc,
time::Duration,
};
use thiserror::Error;
use tokio::{
net::UdpSocket,
sync::Mutex,
task::{spawn_local, JoinSet},
};
use webrtc_dtls::{
config::{Config, ExtendedMasterSecretType},
conn::DTLSConn,
crypto::Certificate,
};
use webrtc_util::Conn;
#[derive(Debug, Error)]
pub(crate) enum LanMouseConnectionError {
#[error(transparent)]
Bind(#[from] io::Error),
#[error(transparent)]
Dtls(#[from] webrtc_dtls::Error),
#[error(transparent)]
Webrtc(#[from] webrtc_util::Error),
#[error("not connected")]
NotConnected,
#[error("emulation is disabled on the target device")]
TargetEmulationDisabled,
#[error("Connection timed out")]
Timeout,
}
const DEFAULT_CONNECTION_TIMEOUT: Duration = Duration::from_secs(5);
async fn connect(
addr: SocketAddr,
cert: Certificate,
) -> Result<(Arc<dyn Conn + Sync + Send>, SocketAddr), (SocketAddr, LanMouseConnectionError)> {
log::info!("connecting to {addr} ...");
let conn = Arc::new(
UdpSocket::bind("0.0.0.0:0")
.await
.map_err(|e| (addr, e.into()))?,
);
conn.connect(addr).await.map_err(|e| (addr, e.into()))?;
let config = Config {
certificates: vec![cert],
server_name: "ignored".to_owned(),
insecure_skip_verify: true,
extended_master_secret: ExtendedMasterSecretType::Require,
..Default::default()
};
let timeout = tokio::time::sleep(DEFAULT_CONNECTION_TIMEOUT);
tokio::select! {
_ = timeout => Err((addr, LanMouseConnectionError::Timeout)),
result = DTLSConn::new(conn, config, true, None) => match result {
Ok(dtls_conn) => Ok((Arc::new(dtls_conn), addr)),
Err(e) => Err((addr, e.into())),
}
}
}
async fn connect_any(
addrs: &[SocketAddr],
cert: Certificate,
) -> Result<(Arc<dyn Conn + Send + Sync>, SocketAddr), LanMouseConnectionError> {
let mut joinset = JoinSet::new();
for &addr in addrs {
joinset.spawn_local(connect(addr, cert.clone()));
}
loop {
match joinset.join_next().await {
None => return Err(LanMouseConnectionError::NotConnected),
Some(r) => match r.expect("join error") {
Ok(conn) => return Ok(conn),
Err((a, e)) => {
log::warn!("failed to connect to {a}: `{e}`")
}
},
};
}
}
pub(crate) struct LanMouseConnection {
cert: Certificate,
client_manager: ClientManager,
conns: Rc<Mutex<HashMap<SocketAddr, Arc<dyn Conn + Send + Sync>>>>,
connecting: Rc<Mutex<HashSet<ClientHandle>>>,
recv_rx: Receiver<(ClientHandle, ProtoEvent)>,
recv_tx: Sender<(ClientHandle, ProtoEvent)>,
ping_response: Rc<RefCell<HashSet<SocketAddr>>>,
}
impl LanMouseConnection {
pub(crate) fn new(cert: Certificate, client_manager: ClientManager) -> Self {
let (recv_tx, recv_rx) = channel();
Self {
cert,
client_manager,
conns: Default::default(),
connecting: Default::default(),
recv_rx,
recv_tx,
ping_response: Default::default(),
}
}
pub(crate) async fn recv(&mut self) -> (ClientHandle, ProtoEvent) {
self.recv_rx.recv().await.expect("channel closed")
}
pub(crate) async fn send(
&self,
event: ProtoEvent,
handle: ClientHandle,
) -> Result<(), LanMouseConnectionError> {
let (buf, len): ([u8; MAX_EVENT_SIZE], usize) = event.into();
let buf = &buf[..len];
if let Some(addr) = self.client_manager.active_addr(handle) {
let conn = {
let conns = self.conns.lock().await;
conns.get(&addr).cloned()
};
if let Some(conn) = conn {
if !self.client_manager.alive(handle) {
return Err(LanMouseConnectionError::TargetEmulationDisabled);
}
match conn.send(buf).await {
Ok(_) => {}
Err(e) => {
log::warn!("client {handle} failed to send: {e}");
disconnect(&self.client_manager, handle, addr, &self.conns).await;
}
}
log::trace!("{event} >->->->->- {addr}");
return Ok(());
}
}
// check if we are already trying to connect
let mut connecting = self.connecting.lock().await;
if !connecting.contains(&handle) {
connecting.insert(handle);
// connect in the background
spawn_local(connect_to_handle(
self.client_manager.clone(),
self.cert.clone(),
handle,
self.conns.clone(),
self.connecting.clone(),
self.recv_tx.clone(),
self.ping_response.clone(),
));
}
Err(LanMouseConnectionError::NotConnected)
}
}
async fn connect_to_handle(
client_manager: ClientManager,
cert: Certificate,
handle: ClientHandle,
conns: Rc<Mutex<HashMap<SocketAddr, Arc<dyn Conn + Send + Sync>>>>,
connecting: Rc<Mutex<HashSet<ClientHandle>>>,
tx: Sender<(ClientHandle, ProtoEvent)>,
ping_response: Rc<RefCell<HashSet<SocketAddr>>>,
) -> Result<(), LanMouseConnectionError> {
log::info!("client {handle} connecting ...");
// sending did not work, figure out active conn.
if let Some(addrs) = client_manager.get_ips(handle) {
let port = client_manager.get_port(handle).unwrap_or(DEFAULT_PORT);
let addrs = addrs
.into_iter()
.map(|a| SocketAddr::new(a, port))
.collect::<Vec<_>>();
log::info!("client ({handle}) connecting ... (ips: {addrs:?})");
let res = connect_any(&addrs, cert).await;
let (conn, addr) = match res {
Ok(c) => c,
Err(e) => {
connecting.lock().await.remove(&handle);
return Err(e);
}
};
log::info!("client ({handle}) connected @ {addr}");
client_manager.set_active_addr(handle, Some(addr));
conns.lock().await.insert(addr, conn.clone());
connecting.lock().await.remove(&handle);
// poll connection for active
spawn_local(ping_pong(addr, conn.clone(), ping_response.clone()));
// receiver
spawn_local(receive_loop(
client_manager,
handle,
addr,
conn,
conns,
tx,
ping_response.clone(),
));
return Ok(());
}
connecting.lock().await.remove(&handle);
Err(LanMouseConnectionError::NotConnected)
}
async fn ping_pong(
addr: SocketAddr,
conn: Arc<dyn Conn + Send + Sync>,
ping_response: Rc<RefCell<HashSet<SocketAddr>>>,
) {
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;
if !ping_response.borrow_mut().remove(&addr) {
log::warn!("{addr} did not respond, closing connection");
let _ = conn.close().await;
return;
}
}
}
async fn receive_loop(
client_manager: ClientManager,
handle: ClientHandle,
addr: SocketAddr,
conn: Arc<dyn Conn + Send + Sync>,
conns: Rc<Mutex<HashMap<SocketAddr, Arc<dyn Conn + Send + Sync>>>>,
tx: Sender<(ClientHandle, ProtoEvent)>,
ping_response: Rc<RefCell<HashSet<SocketAddr>>>,
) {
let mut buf = [0u8; MAX_EVENT_SIZE];
while conn.recv(&mut buf).await.is_ok() {
if let Ok(event) = buf.try_into() {
log::trace!("{addr} <==<==<== {event}");
match event {
ProtoEvent::Pong(b) => {
client_manager.set_active_addr(handle, Some(addr));
client_manager.set_alive(handle, b);
ping_response.borrow_mut().insert(addr);
}
event => tx.send((handle, event)).expect("channel closed"),
}
}
}
log::warn!("recv error");
disconnect(&client_manager, handle, addr, &conns).await;
}
async fn disconnect(
client_manager: &ClientManager,
handle: ClientHandle,
addr: SocketAddr,
conns: &Mutex<HashMap<SocketAddr, Arc<dyn Conn + Send + Sync>>>,
) {
log::warn!("client ({handle}) @ {addr} connection closed");
conns.lock().await.remove(&addr);
client_manager.set_active_addr(handle, None);
let active: Vec<SocketAddr> = conns.lock().await.keys().copied().collect();
log::info!("active connections: {active:?}");
}

View File

@@ -1,71 +0,0 @@
use std::fs;
use std::io::{self, BufWriter, Read, Write};
use std::path::Path;
use std::{fs::File, io::BufReader};
#[cfg(unix)]
use std::os::unix::fs::PermissionsExt;
use sha2::{Digest, Sha256};
use thiserror::Error;
use webrtc_dtls::crypto::Certificate;
#[derive(Debug, Error)]
pub enum Error {
#[error(transparent)]
Io(#[from] io::Error),
#[error(transparent)]
Dtls(#[from] webrtc_dtls::Error),
}
pub fn generate_fingerprint(cert: &[u8]) -> String {
let mut hash = Sha256::new();
hash.update(cert);
let bytes = hash
.finalize()
.iter()
.map(|x| format!("{x:02x}"))
.collect::<Vec<_>>();
bytes.join(":").to_lowercase()
}
pub fn certificate_fingerprint(cert: &Certificate) -> String {
let certificate = cert.certificate.first().expect("certificate missing");
generate_fingerprint(certificate)
}
/// load certificate from file
pub fn load_certificate(path: &Path) -> Result<Certificate, Error> {
let f = File::open(path)?;
let mut reader = BufReader::new(f);
let mut pem = String::new();
reader.read_to_string(&mut pem)?;
Ok(Certificate::from_pem(pem.as_str())?)
}
pub(crate) fn load_or_generate_key_and_cert(path: &Path) -> Result<Certificate, Error> {
if path.exists() && path.is_file() {
Ok(load_certificate(path)?)
} else {
generate_key_and_cert(path)
}
}
pub(crate) fn generate_key_and_cert(path: &Path) -> Result<Certificate, Error> {
let cert = Certificate::generate_self_signed(["ignored".to_owned()])?;
let serialized = cert.serialize_pem();
let parent = path.parent().expect("is a path");
fs::create_dir_all(parent)?;
let f = File::create(path)?;
#[cfg(unix)]
{
let mut perm = f.metadata()?.permissions();
perm.set_mode(0o400); /* r-- --- --- */
f.set_permissions(perm)?;
}
/* FIXME windows permissions */
let mut writer = BufWriter::new(f);
writer.write_all(serialized.as_bytes())?;
Ok(cert)
}

View File

@@ -1,106 +1,63 @@
use local_channel::mpsc::Receiver;
use std::net::IpAddr;
use local_channel::mpsc::{channel, Receiver, Sender};
use tokio::task::{spawn_local, JoinHandle};
use hickory_resolver::{error::ResolveError, TokioAsyncResolver};
use tokio_util::sync::CancellationToken;
use crate::server::Server;
use lan_mouse_ipc::ClientHandle;
pub(crate) struct DnsResolver {
cancellation_token: CancellationToken,
task: Option<JoinHandle<()>>,
request_tx: Sender<DnsRequest>,
event_rx: Receiver<DnsEvent>,
}
struct DnsRequest {
handle: ClientHandle,
hostname: String,
}
pub(crate) enum DnsEvent {
Resolving(ClientHandle),
Resolved(ClientHandle, String, Result<Vec<IpAddr>, ResolveError>),
}
struct DnsTask {
resolver: TokioAsyncResolver,
request_rx: Receiver<DnsRequest>,
event_tx: Sender<DnsEvent>,
cancellation_token: CancellationToken,
dns_request: Receiver<ClientHandle>,
}
impl DnsResolver {
pub(crate) fn new() -> Result<Self, ResolveError> {
pub(crate) fn new(dns_request: Receiver<ClientHandle>) -> Result<Self, ResolveError> {
let resolver = TokioAsyncResolver::tokio_from_system_conf()?;
let (request_tx, request_rx) = channel();
let (event_tx, event_rx) = channel();
let cancellation_token = CancellationToken::new();
let dns_task = DnsTask {
resolver,
request_rx,
event_tx,
cancellation_token: cancellation_token.clone(),
};
let task = Some(spawn_local(dns_task.run()));
Ok(Self {
cancellation_token,
task,
event_rx,
request_tx,
resolver,
dns_request,
})
}
pub(crate) fn resolve(&self, handle: ClientHandle, hostname: String) {
let request = DnsRequest { handle, hostname };
self.request_tx.send(request).expect("channel closed");
async fn resolve(&self, host: &str) -> Result<Vec<IpAddr>, ResolveError> {
let response = self.resolver.lookup_ip(host).await?;
for ip in response.iter() {
log::info!("{host}: adding ip {ip}");
}
Ok(response.iter().collect())
}
pub(crate) async fn event(&mut self) -> DnsEvent {
self.event_rx.recv().await.expect("channel closed")
}
pub(crate) async fn terminate(&mut self) {
self.cancellation_token.cancel();
self.task.take().expect("task").await.expect("join error");
}
}
impl DnsTask {
async fn run(mut self) {
let cancellation_token = self.cancellation_token.clone();
pub(crate) async fn run(mut self, server: Server) {
tokio::select! {
_ = self.do_dns() => {},
_ = cancellation_token.cancelled() => {},
_ = server.cancelled() => {},
_ = self.do_dns(&server) => {},
}
}
async fn do_dns(&mut self) {
while let Some(dns_request) = self.request_rx.recv().await {
let DnsRequest { handle, hostname } = dns_request;
async fn do_dns(&mut self, server: &Server) {
loop {
let handle = self.dns_request.recv().await.expect("channel closed");
self.event_tx
.send(DnsEvent::Resolving(handle))
.expect("channel closed");
/* update resolving status */
let hostname = match server.get_hostname(handle) {
Some(hostname) => hostname,
None => continue,
};
/* spawn task for dns request */
let event_tx = self.event_tx.clone();
let resolver = self.resolver.clone();
let cancellation_token = self.cancellation_token.clone();
log::info!("resolving ({handle}) `{hostname}` ...");
server.set_resolving(handle, true);
tokio::task::spawn_local(async move {
tokio::select! {
ips = resolver.lookup_ip(&hostname) => {
let ips = ips.map(|ips| ips.iter().collect::<Vec<_>>());
event_tx
.send(DnsEvent::Resolved(handle, hostname, ips))
.expect("channel closed");
}
_ = cancellation_token.cancelled() => {},
let ips = match self.resolve(&hostname).await {
Ok(ips) => ips,
Err(e) => {
log::warn!("could not resolve host '{hostname}': {e}");
vec![]
}
});
};
server.update_dns_ips(handle, ips);
server.set_resolving(handle, false);
}
}
}

View File

@@ -1,407 +0,0 @@
use crate::listen::{LanMouseListener, 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 std::{
cell::Cell,
collections::HashMap,
net::SocketAddr,
rc::Rc,
time::{Duration, Instant},
};
use tokio::{
select,
task::{spawn_local, JoinHandle},
};
/// emulation handling events received from a listener
pub(crate) struct Emulation {
task: JoinHandle<()>,
request_tx: Sender<EmulationRequest>,
event_rx: Receiver<EmulationEvent>,
}
pub(crate) enum EmulationEvent {
/// new connection
Connected {
/// address of the connection
addr: SocketAddr,
/// position of the connection
pos: lan_mouse_ipc::Position,
/// certificate fingerprint of the connection
fingerprint: String,
},
/// connection closed
Disconnected { addr: SocketAddr },
/// the port of the listener has changed
PortChanged(Result<u16, ListenerCreationError>),
/// emulation was disabled
EmulationDisabled,
/// emulation was enabled
EmulationEnabled,
/// capture should be released
ReleaseNotify,
}
enum EmulationRequest {
Reenable,
Release(SocketAddr),
ChangePort(u16),
Terminate,
}
impl Emulation {
pub(crate) fn new(
backend: Option<input_emulation::Backend>,
listener: LanMouseListener,
) -> Self {
let emulation_proxy = EmulationProxy::new(backend);
let (request_tx, request_rx) = channel();
let (event_tx, event_rx) = channel();
let emulation_task = ListenTask {
listener,
emulation_proxy,
request_rx,
event_tx,
};
let task = spawn_local(emulation_task.run());
Self {
task,
request_tx,
event_rx,
}
}
pub(crate) fn send_leave_event(&self, addr: SocketAddr) {
self.request_tx
.send(EmulationRequest::Release(addr))
.expect("channel closed");
}
pub(crate) fn reenable(&self) {
self.request_tx
.send(EmulationRequest::Reenable)
.expect("channel closed");
}
pub(crate) fn request_port_change(&self, port: u16) {
self.request_tx
.send(EmulationRequest::ChangePort(port))
.expect("channel closed")
}
pub(crate) async fn event(&mut self) -> EmulationEvent {
self.event_rx.recv().await.expect("channel closed")
}
/// wait for termination
pub(crate) async fn terminate(&mut self) {
log::debug!("terminating emulation");
self.request_tx
.send(EmulationRequest::Terminate)
.expect("channel closed");
if let Err(e) = (&mut self.task).await {
log::warn!("{e}");
}
}
}
struct ListenTask {
listener: LanMouseListener,
emulation_proxy: EmulationProxy,
request_rx: Receiver<EmulationRequest>,
event_tx: Sender<EmulationEvent>,
}
impl ListenTask {
async fn run(mut self) {
let mut interval = tokio::time::interval(Duration::from_secs(5));
let mut last_response = 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");
}
}
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,
_ => {}
}
}
event = self.emulation_proxy.event() => {
self.event_tx.send(event).expect("channel closed");
}
request = self.request_rx.recv() => match request.expect("channel closed") {
// reenable emulation
EmulationRequest::Reenable => self.emulation_proxy.reenable(),
// notify the other end that we hit a barrier (should release capture)
EmulationRequest::Release(addr) => self.listener.reply(addr, ProtoEvent::Leave(0)).await,
EmulationRequest::ChangePort(port) => {
self.listener.request_port_change(port);
let result = self.listener.port_changed().await;
self.event_tx.send(EmulationEvent::PortChanged(result)).expect("channel closed");
}
EmulationRequest::Terminate => break,
},
_ = interval.tick() => {
last_response.retain(|&addr,instant| {
if instant.elapsed() > Duration::from_secs(1) {
log::warn!("releasing keys: {addr} not responding!");
self.emulation_proxy.remove(addr);
self.event_tx.send(EmulationEvent::Disconnected { addr }).expect("channel closed");
false
} else {
true
}
});
}
}
}
self.listener.terminate().await;
self.emulation_proxy.terminate().await;
}
}
/// proxy handling the actual input emulation,
/// discarding events when it is disabled
pub(crate) struct EmulationProxy {
emulation_active: Rc<Cell<bool>>,
exit_requested: Rc<Cell<bool>>,
request_tx: Sender<ProxyRequest>,
event_rx: Receiver<EmulationEvent>,
task: JoinHandle<()>,
}
enum ProxyRequest {
Input(Event, SocketAddr),
Remove(SocketAddr),
Terminate,
Reenable,
}
impl EmulationProxy {
fn new(backend: Option<input_emulation::Backend>) -> Self {
let (request_tx, request_rx) = channel();
let (event_tx, event_rx) = channel();
let emulation_active = Rc::new(Cell::new(false));
let exit_requested = Rc::new(Cell::new(false));
let emulation_task = EmulationTask {
backend,
exit_requested: exit_requested.clone(),
request_rx,
event_tx,
handles: Default::default(),
next_id: 0,
};
let task = spawn_local(emulation_task.run());
Self {
emulation_active,
exit_requested,
request_tx,
task,
event_rx,
}
}
async fn event(&mut self) -> EmulationEvent {
let event = self.event_rx.recv().await.expect("channel closed");
if let EmulationEvent::EmulationEnabled = event {
self.emulation_active.replace(true);
}
if let EmulationEvent::EmulationDisabled = event {
self.emulation_active.replace(false);
}
event
}
fn consume(&self, event: Event, addr: SocketAddr) {
// ignore events if emulation is currently disabled
if self.emulation_active.get() {
self.request_tx
.send(ProxyRequest::Input(event, addr))
.expect("channel closed");
}
}
fn remove(&self, addr: SocketAddr) {
self.request_tx
.send(ProxyRequest::Remove(addr))
.expect("channel closed");
}
fn reenable(&self) {
self.request_tx
.send(ProxyRequest::Reenable)
.expect("channel closed");
}
async fn terminate(&mut self) {
self.exit_requested.replace(true);
self.request_tx
.send(ProxyRequest::Terminate)
.expect("channel closed");
let _ = (&mut self.task).await;
}
}
struct EmulationTask {
backend: Option<input_emulation::Backend>,
exit_requested: Rc<Cell<bool>>,
request_rx: Receiver<ProxyRequest>,
event_tx: Sender<EmulationEvent>,
handles: HashMap<SocketAddr, EmulationHandle>,
next_id: EmulationHandle,
}
impl EmulationTask {
async fn run(mut self) {
loop {
if let Err(e) = self.do_emulation().await {
log::warn!("input emulation exited: {e}");
}
if self.exit_requested.get() {
break;
}
// wait for reenable request
loop {
match self.request_rx.recv().await.expect("channel closed") {
ProxyRequest::Reenable => break,
ProxyRequest::Terminate => return,
ProxyRequest::Input(..) => { /* emulation inactive => ignore */ }
ProxyRequest::Remove(..) => { /* emulation inactive => ignore */ }
}
}
}
}
async fn do_emulation(&mut self) -> Result<(), InputEmulationError> {
log::info!("creating input emulation ...");
let mut emulation = tokio::select! {
r = InputEmulation::new(self.backend) => r?,
// allow termination event while requesting input emulation
_ = wait_for_termination(&mut self.request_rx) => return Ok(()),
};
// used to send enabled and disabled events
let _emulation_guard = DropGuard::new(
self.event_tx.clone(),
EmulationEvent::EmulationEnabled,
EmulationEvent::EmulationDisabled,
);
// create active handles
if let Err(e) = self.create_clients(&mut emulation).await {
emulation.terminate().await;
return Err(e);
}
let res = self.do_emulation_session(&mut emulation).await;
// FIXME replace with async drop when stabilized
emulation.terminate().await;
res
}
async fn create_clients(
&mut self,
emulation: &mut InputEmulation,
) -> Result<(), InputEmulationError> {
for handle in self.handles.values() {
tokio::select! {
_ = emulation.create(*handle) => {},
_ = wait_for_termination(&mut self.request_rx) => return Ok(()),
}
}
Ok(())
}
async fn do_emulation_session(
&mut self,
emulation: &mut InputEmulation,
) -> Result<(), InputEmulationError> {
loop {
tokio::select! {
e = self.request_rx.recv() => match e.expect("channel closed") {
ProxyRequest::Input(event, addr) => {
let handle = match self.handles.get(&addr) {
Some(&handle) => handle,
None => {
let handle = self.next_id;
self.next_id += 1;
emulation.create(handle).await;
self.handles.insert(addr, handle);
handle
}
};
emulation.consume(event, handle).await?;
},
ProxyRequest::Remove(addr) => {
if let Some(handle) = self.handles.remove(&addr) {
emulation.destroy(handle).await;
}
}
ProxyRequest::Terminate => break Ok(()),
ProxyRequest::Reenable => continue,
},
}
}
}
}
fn to_ipc_pos(pos: Position) -> lan_mouse_ipc::Position {
match pos {
Position::Left => lan_mouse_ipc::Position::Left,
Position::Right => lan_mouse_ipc::Position::Right,
Position::Top => lan_mouse_ipc::Position::Top,
Position::Bottom => lan_mouse_ipc::Position::Bottom,
}
}
async fn wait_for_termination(rx: &mut Receiver<ProxyRequest>) {
loop {
match rx.recv().await.expect("channel closed") {
ProxyRequest::Terminate => return,
ProxyRequest::Input(_, _) => continue,
ProxyRequest::Remove(_) => continue,
ProxyRequest::Reenable => continue,
}
}
}
struct DropGuard<T> {
tx: Sender<T>,
on_drop: Option<T>,
}
impl<T> DropGuard<T> {
fn new(tx: Sender<T>, on_new: T, on_drop: T) -> Self {
tx.send(on_new).expect("channel closed");
let on_drop = Some(on_drop);
Self { tx, on_drop }
}
}
impl<T> Drop for DropGuard<T> {
fn drop(&mut self) {
self.tx
.send(self.on_drop.take().expect("item"))
.expect("channel closed");
}
}

View File

@@ -1,11 +1,7 @@
mod capture;
pub mod capture_test;
pub mod client;
pub mod config;
mod connect;
mod crypto;
mod dns;
mod emulation;
pub mod dns;
pub mod server;
pub mod capture_test;
pub mod emulation_test;
mod listen;
pub mod service;

View File

@@ -1,224 +0,0 @@
use futures::{Stream, StreamExt};
use lan_mouse_proto::{ProtoEvent, MAX_EVENT_SIZE};
use local_channel::mpsc::{channel, Receiver, Sender};
use rustls::pki_types::CertificateDer;
use std::{
collections::HashMap,
net::SocketAddr,
rc::Rc,
sync::{Arc, RwLock},
time::Duration,
};
use thiserror::Error;
use tokio::{
sync::Mutex,
task::{spawn_local, JoinHandle},
};
use webrtc_dtls::{
config::{ClientAuthType::RequireAnyClientCert, Config, ExtendedMasterSecretType},
conn::DTLSConn,
crypto::Certificate,
listener::listen,
};
use webrtc_util::{conn::Listener, Conn, Error};
use crate::crypto;
#[derive(Error, Debug)]
pub enum ListenerCreationError {
#[error(transparent)]
WebrtcUtil(#[from] webrtc_util::Error),
#[error(transparent)]
WebrtcDtls(#[from] webrtc_dtls::Error),
}
type ArcConn = Arc<dyn Conn + Send + Sync>;
pub(crate) struct LanMouseListener {
listen_rx: Receiver<(ProtoEvent, SocketAddr)>,
listen_tx: Sender<(ProtoEvent, SocketAddr)>,
listen_task: JoinHandle<()>,
conns: Rc<Mutex<Vec<(SocketAddr, ArcConn)>>>,
request_port_change: Sender<u16>,
port_changed: Receiver<Result<u16, ListenerCreationError>>,
}
type VerifyPeerCertificateFn = Arc<
dyn (Fn(&[Vec<u8>], &[CertificateDer<'static>]) -> Result<(), webrtc_dtls::Error>)
+ Send
+ Sync,
>;
impl LanMouseListener {
pub(crate) async fn new(
port: u16,
cert: Certificate,
authorized_keys: Arc<RwLock<HashMap<String, String>>>,
) -> Result<Self, ListenerCreationError> {
let (listen_tx, listen_rx) = channel();
let (request_port_change, mut request_port_change_rx) = channel();
let (port_changed_tx, port_changed) = channel();
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 cfg = Config {
certificates: vec![cert.clone()],
extended_master_secret: ExtendedMasterSecretType::Require,
client_auth: RequireAnyClientCert,
verify_peer_certificate,
..Default::default()
};
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_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");
}
Err(e) => {
log::warn!("unable to change port: {e}");
port_changed_tx.send(Err(e.into())).expect("channel closed");
}
};
},
};
}
});
Ok(Self {
conns,
listen_rx,
listen_tx,
listen_task,
port_changed,
request_port_change,
})
}
pub(crate) fn request_port_change(&mut self, port: u16) {
self.request_port_change.send(port).expect("channel closed");
}
pub(crate) async fn port_changed(&mut self) -> Result<u16, ListenerCreationError> {
self.port_changed.recv().await.expect("channel closed")
}
pub(crate) async fn terminate(&mut self) {
self.listen_task.abort();
let conns = self.conns.lock().await;
for (_, conn) in conns.iter() {
let _ = conn.close().await;
}
self.listen_tx.close();
}
pub(crate) async fn reply(&self, addr: SocketAddr, event: ProtoEvent) {
log::trace!("reply {event} >=>=>=>=>=> {addr}");
let (buf, len): ([u8; MAX_EVENT_SIZE], usize) = event.into();
let conns = self.conns.lock().await;
for (a, conn) in conns.iter() {
if *a == addr {
let _ = conn.send(&buf[..len]).await;
}
}
}
pub(crate) async fn get_certificate_fingerprint(&self, addr: SocketAddr) -> Option<String> {
if let Some(conn) = self
.conns
.lock()
.await
.iter()
.find(|(a, _)| *a == addr)
.map(|(_, c)| c.clone())
{
let conn: &DTLSConn = conn.as_any().downcast_ref().expect("dtls conn");
let certs = conn.connection_state().await.peer_certificates;
let cert = certs.first()?;
let fingerprint = crypto::generate_fingerprint(cert);
Some(fingerprint)
} else {
None
}
}
}
impl Stream for LanMouseListener {
type Item = (ProtoEvent, SocketAddr);
fn poll_next(
mut self: std::pin::Pin<&mut Self>,
cx: &mut std::task::Context<'_>,
) -> std::task::Poll<Option<Self::Item>> {
self.listen_rx.poll_next_unpin(cx)
}
}
async fn read_loop(
conns: Rc<Mutex<Vec<(SocketAddr, ArcConn)>>>,
addr: SocketAddr,
conn: ArcConn,
dtls_tx: Sender<(ProtoEvent, SocketAddr)>,
) -> 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"),
Err(e) => {
log::warn!("error receiving event: {e}");
break;
}
}
}
log::info!("dtls client disconnected {:?}", addr);
let mut conns = conns.lock().await;
let index = conns
.iter()
.position(|(a, _)| *a == addr)
.expect("connection not found");
conns.remove(index);
Ok(())
}

View File

@@ -5,9 +5,9 @@ use lan_mouse::{
capture_test,
config::{Config, ConfigError, Frontend},
emulation_test,
service::{Service, ServiceError},
server::{Server, ServiceError},
};
use lan_mouse_ipc::{IpcError, IpcListenerCreationError};
use lan_mouse_ipc::IpcError;
use std::{
future::Future,
io,
@@ -32,7 +32,7 @@ enum LanMouseError {
Emulation(#[from] InputEmulationError),
}
fn main() {
pub fn main() {
// init logging
let env = Env::default().filter_or("LAN_MOUSE_LOG_LEVEL", "info");
env_logger::init_from_env(env);
@@ -46,18 +46,16 @@ fn main() {
fn run() -> Result<(), LanMouseError> {
// parse config file + cli args
let config = Config::new()?;
log::debug!("{config:?}");
log::info!("release bind: {:?}", config.release_bind);
if config.test_capture {
run_async(capture_test::run(config))?;
} 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?,
}
run_async(run_service(config))?;
} else {
// otherwise start the service as a child process and
// run a frontend
@@ -102,10 +100,8 @@ fn start_service() -> Result<Child, io::Error> {
}
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 mut service = Service::new(config).await?;
service.run().await?;
Server::new(config).run().await?;
log::info!("service exited!");
Ok(())
}

562
src/server.rs Normal file
View File

@@ -0,0 +1,562 @@
use capture_task::CaptureRequest;
use emulation_task::EmulationRequest;
use futures::StreamExt;
use hickory_resolver::error::ResolveError;
use local_channel::mpsc::{channel, Sender};
use log;
use std::{
cell::{Cell, RefCell},
collections::{HashSet, VecDeque},
io,
net::{IpAddr, SocketAddr},
rc::Rc,
};
use thiserror::Error;
use tokio::{join, signal, sync::Notify};
use tokio_util::sync::CancellationToken;
use crate::{client::ClientManager, config::Config, dns::DnsResolver};
use lan_mouse_ipc::{
AsyncFrontendListener, ClientConfig, ClientHandle, ClientState, FrontendEvent, FrontendRequest,
ListenerCreationError, Position, Status,
};
mod capture_task;
mod emulation_task;
mod network_task;
mod ping_task;
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
enum State {
/// Currently sending events to another device
Sending,
/// Currently receiving events from other devices
Receiving,
/// Entered the deadzone of another device but waiting
/// for acknowledgement (Leave event) from the device
AwaitAck,
}
#[derive(Debug, Error)]
pub enum ServiceError {
#[error(transparent)]
Dns(#[from] ResolveError),
#[error(transparent)]
Listen(#[from] ListenerCreationError),
#[error(transparent)]
Io(#[from] io::Error),
}
#[derive(Clone)]
pub struct Server {
active_client: Rc<Cell<Option<ClientHandle>>>,
pub(crate) client_manager: Rc<RefCell<ClientManager>>,
port: Rc<Cell<u16>>,
state: Rc<Cell<State>>,
release_bind: Vec<input_event::scancode::Linux>,
notifies: Rc<Notifies>,
config: Rc<Config>,
pending_frontend_events: Rc<RefCell<VecDeque<FrontendEvent>>>,
capture_status: Rc<Cell<Status>>,
emulation_status: Rc<Cell<Status>>,
}
#[derive(Default)]
struct Notifies {
capture: Notify,
emulation: Notify,
ping: Notify,
port_changed: Notify,
frontend_event_pending: Notify,
cancel: CancellationToken,
}
impl Server {
pub fn new(config: Config) -> Self {
let active_client = Rc::new(Cell::new(None));
let client_manager = Rc::new(RefCell::new(ClientManager::default()));
let state = Rc::new(Cell::new(State::Receiving));
let port = Rc::new(Cell::new(config.port));
for config_client in config.get_clients() {
let client = ClientConfig {
hostname: config_client.hostname,
fix_ips: config_client.ips.into_iter().collect(),
port: config_client.port,
pos: config_client.pos,
cmd: config_client.enter_hook,
};
let state = ClientState {
active: config_client.active,
ips: HashSet::from_iter(client.fix_ips.iter().cloned()),
..Default::default()
};
let mut client_manager = client_manager.borrow_mut();
let handle = client_manager.add_client();
let c = client_manager.get_mut(handle).expect("invalid handle");
*c = (client, state);
}
// task notification tokens
let notifies = Rc::new(Notifies::default());
let release_bind = config.release_bind.clone();
let config = Rc::new(config);
Self {
config,
active_client,
client_manager,
port,
state,
release_bind,
notifies,
pending_frontend_events: Rc::new(RefCell::new(VecDeque::new())),
capture_status: Default::default(),
emulation_status: Default::default(),
}
}
pub async fn run(&mut self) -> Result<(), ServiceError> {
// create frontend communication adapter, exit if already running
let mut frontend = match AsyncFrontendListener::new().await {
Ok(f) => f,
Err(ListenerCreationError::AlreadyRunning) => {
log::info!("service already running, exiting");
return Ok(());
}
e => e?,
};
let (capture_tx, capture_rx) = channel(); /* requests for input capture */
let (emulation_tx, emulation_rx) = channel(); /* emulation requests */
let (udp_recv_tx, udp_recv_rx) = channel(); /* udp receiver */
let (udp_send_tx, udp_send_rx) = channel(); /* udp sender */
let (dns_tx, dns_rx) = channel(); /* dns requests */
let network = network_task::new(self.clone(), udp_recv_tx.clone(), udp_send_rx).await?;
let capture = capture_task::new(self.clone(), capture_rx, udp_send_tx.clone());
let emulation =
emulation_task::new(self.clone(), emulation_rx, udp_recv_rx, udp_send_tx.clone());
let resolver = DnsResolver::new(dns_rx)?;
let dns_task = tokio::task::spawn_local(resolver.run(self.clone()));
// task that pings clients to see if they are responding
let ping = ping_task::new(
self.clone(),
udp_send_tx.clone(),
emulation_tx.clone(),
capture_tx.clone(),
);
for handle in self.active_clients() {
dns_tx.send(handle).expect("channel closed");
}
loop {
tokio::select! {
request = frontend.next() => {
let request = match request {
Some(Ok(r)) => r,
Some(Err(e)) => {
log::error!("error receiving request: {e}");
continue;
}
None => break,
};
log::debug!("handle frontend request: {request:?}");
self.handle_request(&capture_tx.clone(), &emulation_tx.clone(), request, &dns_tx);
}
_ = self.notifies.frontend_event_pending.notified() => {
while let Some(event) = {
/* need to drop borrow before next iteration! */
let event = self.pending_frontend_events.borrow_mut().pop_front();
event
} {
frontend.broadcast(event).await;
}
},
_ = self.cancelled() => break,
r = signal::ctrl_c() => {
r.expect("failed to wait for CTRL+C");
break;
}
}
}
log::info!("terminating service");
self.cancel();
let _ = join!(capture, dns_task, emulation, network, ping);
Ok(())
}
fn notify_frontend(&self, event: FrontendEvent) {
self.pending_frontend_events.borrow_mut().push_back(event);
self.notifies.frontend_event_pending.notify_one();
}
fn cancel(&self) {
self.notifies.cancel.cancel();
}
pub(crate) async fn cancelled(&self) {
self.notifies.cancel.cancelled().await
}
fn is_cancelled(&self) -> bool {
self.notifies.cancel.is_cancelled()
}
fn notify_capture(&self) {
log::info!("received capture enable request");
self.notifies.capture.notify_waiters()
}
async fn capture_enabled(&self) {
self.notifies.capture.notified().await
}
fn notify_emulation(&self) {
log::info!("received emulation enable request");
self.notifies.emulation.notify_waiters()
}
async fn emulation_notified(&self) {
self.notifies.emulation.notified().await
}
fn restart_ping_timer(&self) {
self.notifies.ping.notify_waiters()
}
async fn ping_timer_notified(&self) {
self.notifies.ping.notified().await
}
fn request_port_change(&self, port: u16) {
self.port.replace(port);
self.notifies.port_changed.notify_one();
}
fn notify_port_changed(&self, port: u16, msg: Option<String>) {
self.port.replace(port);
self.notify_frontend(FrontendEvent::PortChanged(port, msg));
}
pub(crate) fn client_updated(&self, handle: ClientHandle) {
self.notify_frontend(FrontendEvent::Changed(handle));
}
fn active_clients(&self) -> Vec<ClientHandle> {
self.client_manager
.borrow()
.get_client_states()
.filter(|(_, (_, s))| s.active)
.map(|(h, _)| h)
.collect()
}
fn handle_request(
&self,
capture: &Sender<CaptureRequest>,
emulate: &Sender<EmulationRequest>,
event: FrontendRequest,
dns: &Sender<ClientHandle>,
) -> bool {
log::debug!("frontend: {event:?}");
match event {
FrontendRequest::EnableCapture => self.notify_capture(),
FrontendRequest::EnableEmulation => self.notify_emulation(),
FrontendRequest::Create => {
self.add_client();
}
FrontendRequest::Activate(handle, active) => {
if active {
self.activate_client(capture, emulate, handle);
} else {
self.deactivate_client(capture, emulate, handle);
}
}
FrontendRequest::ChangePort(port) => self.request_port_change(port),
FrontendRequest::Delete(handle) => {
self.remove_client(capture, emulate, handle);
self.notify_frontend(FrontendEvent::Deleted(handle));
}
FrontendRequest::Enumerate() => self.enumerate(),
FrontendRequest::GetState(handle) => self.broadcast_client(handle),
FrontendRequest::UpdateFixIps(handle, fix_ips) => self.update_fix_ips(handle, fix_ips),
FrontendRequest::UpdateHostname(handle, host) => {
self.update_hostname(handle, host, dns)
}
FrontendRequest::UpdatePort(handle, port) => self.update_port(handle, port),
FrontendRequest::UpdatePosition(handle, pos) => {
self.update_pos(handle, capture, emulate, pos)
}
FrontendRequest::ResolveDns(handle) => dns.send(handle).expect("channel closed"),
FrontendRequest::Sync => {
self.enumerate();
self.notify_frontend(FrontendEvent::EmulationStatus(self.emulation_status.get()));
self.notify_frontend(FrontendEvent::CaptureStatus(self.capture_status.get()));
self.notify_frontend(FrontendEvent::PortChanged(self.port.get(), None));
}
};
false
}
fn enumerate(&self) {
let clients = self
.client_manager
.borrow()
.get_client_states()
.map(|(h, (c, s))| (h, c.clone(), s.clone()))
.collect();
self.notify_frontend(FrontendEvent::Enumerate(clients));
}
fn add_client(&self) -> ClientHandle {
let handle = self.client_manager.borrow_mut().add_client();
log::info!("added client {handle}");
let (c, s) = self.client_manager.borrow().get(handle).unwrap().clone();
self.notify_frontend(FrontendEvent::Created(handle, c, s));
handle
}
fn deactivate_client(
&self,
capture: &Sender<CaptureRequest>,
emulate: &Sender<EmulationRequest>,
handle: ClientHandle,
) {
match self.client_manager.borrow_mut().get_mut(handle) {
None => return,
Some((_, s)) if !s.active => return,
Some((_, s)) => s.active = false,
};
let _ = capture.send(CaptureRequest::Destroy(handle));
let _ = emulate.send(EmulationRequest::Destroy(handle));
self.client_updated(handle);
log::info!("deactivated client {handle}");
}
fn activate_client(
&self,
capture: &Sender<CaptureRequest>,
emulate: &Sender<EmulationRequest>,
handle: ClientHandle,
) {
/* deactivate potential other client at this position */
let pos = match self.client_manager.borrow().get(handle) {
None => return,
Some((_, s)) if s.active => return,
Some((client, _)) => client.pos,
};
let other = self.client_manager.borrow_mut().find_client(pos);
if let Some(other) = other {
self.deactivate_client(capture, emulate, other);
}
/* activate the client */
if let Some((_, s)) = self.client_manager.borrow_mut().get_mut(handle) {
s.active = true;
} else {
return;
};
/* notify emulation, capture and frontends */
let _ = capture.send(CaptureRequest::Create(handle, to_capture_pos(pos)));
let _ = emulate.send(EmulationRequest::Create(handle));
self.client_updated(handle);
log::info!("activated client {handle} ({pos})");
}
fn remove_client(
&self,
capture: &Sender<CaptureRequest>,
emulate: &Sender<EmulationRequest>,
handle: ClientHandle,
) {
let Some(active) = self
.client_manager
.borrow_mut()
.remove_client(handle)
.map(|(_, s)| s.active)
else {
return;
};
if active {
let _ = capture.send(CaptureRequest::Destroy(handle));
let _ = emulate.send(EmulationRequest::Destroy(handle));
}
}
fn update_pressed_keys(&self, handle: ClientHandle, has_pressed_keys: bool) {
if let Some((_, s)) = self.client_manager.borrow_mut().get_mut(handle) {
s.has_pressed_keys = has_pressed_keys;
}
}
fn update_fix_ips(&self, handle: ClientHandle, fix_ips: Vec<IpAddr>) {
if let Some((c, _)) = self.client_manager.borrow_mut().get_mut(handle) {
c.fix_ips = fix_ips;
};
self.update_ips(handle);
self.client_updated(handle);
}
pub(crate) fn update_dns_ips(&self, handle: ClientHandle, dns_ips: Vec<IpAddr>) {
if let Some((_, s)) = self.client_manager.borrow_mut().get_mut(handle) {
s.dns_ips = dns_ips;
};
self.update_ips(handle);
self.client_updated(handle);
}
fn update_ips(&self, handle: ClientHandle) {
if let Some((c, s)) = self.client_manager.borrow_mut().get_mut(handle) {
s.ips = c
.fix_ips
.iter()
.cloned()
.chain(s.dns_ips.iter().cloned())
.collect::<HashSet<_>>();
}
}
fn update_hostname(
&self,
handle: ClientHandle,
hostname: Option<String>,
dns: &Sender<ClientHandle>,
) {
let mut client_manager = self.client_manager.borrow_mut();
let Some((c, s)) = client_manager.get_mut(handle) else {
return;
};
// hostname changed
if c.hostname != hostname {
c.hostname = hostname;
s.active_addr = None;
s.dns_ips.clear();
drop(client_manager);
self.update_ips(handle);
dns.send(handle).expect("channel closed");
}
self.client_updated(handle);
}
fn update_port(&self, handle: ClientHandle, port: u16) {
let mut client_manager = self.client_manager.borrow_mut();
let Some((c, s)) = client_manager.get_mut(handle) else {
return;
};
if c.port != port {
c.port = port;
s.active_addr = s.active_addr.map(|a| SocketAddr::new(a.ip(), port));
}
}
fn update_pos(
&self,
handle: ClientHandle,
capture: &Sender<CaptureRequest>,
emulate: &Sender<EmulationRequest>,
pos: Position,
) {
let (changed, active) = {
let mut client_manager = self.client_manager.borrow_mut();
let Some((c, s)) = client_manager.get_mut(handle) else {
return;
};
let changed = c.pos != pos;
if changed {
log::info!("update pos {handle} {} -> {}", c.pos, pos);
}
c.pos = pos;
(changed, s.active)
};
// update state in event input emulator & input capture
if changed {
self.deactivate_client(capture, emulate, handle);
if active {
self.activate_client(capture, emulate, handle);
}
}
}
fn broadcast_client(&self, handle: ClientHandle) {
let client = self.client_manager.borrow().get(handle).cloned();
let event = if let Some((config, state)) = client {
FrontendEvent::State(handle, config, state)
} else {
FrontendEvent::NoSuchClient(handle)
};
self.notify_frontend(event);
}
fn set_emulation_status(&self, status: Status) {
self.emulation_status.replace(status);
let status = FrontendEvent::EmulationStatus(status);
self.notify_frontend(status);
}
fn set_capture_status(&self, status: Status) {
self.capture_status.replace(status);
let status = FrontendEvent::CaptureStatus(status);
self.notify_frontend(status);
}
pub(crate) fn set_resolving(&self, handle: ClientHandle, status: bool) {
if let Some((_, s)) = self.client_manager.borrow_mut().get_mut(handle) {
s.resolving = status;
}
self.client_updated(handle);
}
pub(crate) fn get_hostname(&self, handle: ClientHandle) -> Option<String> {
self.client_manager
.borrow_mut()
.get_mut(handle)
.and_then(|(c, _)| c.hostname.clone())
}
fn get_state(&self) -> State {
self.state.get()
}
fn set_state(&self, state: State) {
log::debug!("state => {state:?}");
self.state.replace(state);
}
fn set_active(&self, handle: Option<ClientHandle>) {
log::debug!("active client => {handle:?}");
self.active_client.replace(handle);
}
fn active_addr(&self, handle: ClientHandle) -> Option<SocketAddr> {
self.client_manager
.borrow()
.get(handle)
.and_then(|(_, s)| s.active_addr)
}
}
fn to_capture_pos(pos: Position) -> input_capture::Position {
match pos {
Position::Left => input_capture::Position::Left,
Position::Right => input_capture::Position::Right,
Position::Top => input_capture::Position::Top,
Position::Bottom => input_capture::Position::Bottom,
}
}

206
src/server/capture_task.rs Normal file
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@@ -0,0 +1,206 @@
use futures::StreamExt;
use lan_mouse_proto::ProtoEvent;
use local_channel::mpsc::{Receiver, Sender};
use std::net::SocketAddr;
use tokio::{process::Command, task::JoinHandle};
use input_capture::{
self, CaptureError, CaptureEvent, CaptureHandle, InputCapture, InputCaptureError, Position,
};
use crate::server::State;
use lan_mouse_ipc::{ClientHandle, Status};
use super::Server;
#[derive(Clone, Copy, Debug)]
pub(crate) enum CaptureRequest {
/// capture must release the mouse
Release,
/// add a capture client
Create(CaptureHandle, Position),
/// destory a capture client
Destroy(CaptureHandle),
}
pub(crate) fn new(
server: Server,
capture_rx: Receiver<CaptureRequest>,
udp_send: Sender<(ProtoEvent, SocketAddr)>,
) -> JoinHandle<()> {
let backend = server.config.capture_backend.map(|b| b.into());
tokio::task::spawn_local(capture_task(server, backend, udp_send, capture_rx))
}
async fn capture_task(
server: Server,
backend: Option<input_capture::Backend>,
sender_tx: Sender<(ProtoEvent, SocketAddr)>,
mut notify_rx: Receiver<CaptureRequest>,
) {
loop {
if let Err(e) = do_capture(backend, &server, &sender_tx, &mut notify_rx).await {
log::warn!("input capture exited: {e}");
}
server.set_capture_status(Status::Disabled);
if server.is_cancelled() {
break;
}
// allow cancellation
loop {
tokio::select! {
_ = notify_rx.recv() => continue, /* need to ignore requests here! */
_ = server.capture_enabled() => break,
_ = server.cancelled() => return,
}
}
}
}
async fn do_capture(
backend: Option<input_capture::Backend>,
server: &Server,
sender_tx: &Sender<(ProtoEvent, SocketAddr)>,
notify_rx: &mut Receiver<CaptureRequest>,
) -> Result<(), InputCaptureError> {
/* allow cancelling capture request */
let mut capture = tokio::select! {
r = InputCapture::new(backend) => r?,
_ = server.cancelled() => return Ok(()),
};
server.set_capture_status(Status::Enabled);
let clients = server.active_clients();
let clients = clients.iter().copied().map(|handle| {
(
handle,
server
.client_manager
.borrow()
.get(handle)
.map(|(c, _)| c.pos)
.expect("no such client"),
)
});
for (handle, pos) in clients {
capture.create(handle, to_capture_pos(pos)).await?;
}
loop {
tokio::select! {
event = capture.next() => match event {
Some(event) => handle_capture_event(server, &mut capture, sender_tx, event?).await?,
None => return Ok(()),
},
e = notify_rx.recv() => {
log::debug!("input capture notify rx: {e:?}");
match e {
Some(e) => match e {
CaptureRequest::Release => {
capture.release().await?;
server.state.replace(State::Receiving);
}
CaptureRequest::Create(h, p) => capture.create(h, p).await?,
CaptureRequest::Destroy(h) => capture.destroy(h).await?,
},
None => break,
}
}
_ = server.cancelled() => break,
}
}
capture.terminate().await?;
Ok(())
}
async fn handle_capture_event(
server: &Server,
capture: &mut InputCapture,
sender_tx: &Sender<(ProtoEvent, SocketAddr)>,
event: (CaptureHandle, CaptureEvent),
) -> Result<(), CaptureError> {
let (handle, event) = event;
log::trace!("({handle}) {event:?}");
// capture started
if event == CaptureEvent::Begin {
// wait for remote to acknowlegde enter
server.set_state(State::AwaitAck);
server.set_active(Some(handle));
// restart ping timer to release capture if unreachable
server.restart_ping_timer();
// spawn enter hook cmd
spawn_hook_command(server, handle);
}
// release capture if emulation set state to Receiveing
if server.get_state() == State::Receiving {
capture.release().await?;
return Ok(());
}
// check release bind
if capture.keys_pressed(&server.release_bind) {
capture.release().await?;
server.set_state(State::Receiving);
}
if let Some(addr) = server.active_addr(handle) {
let event = match server.get_state() {
State::Sending => match event {
CaptureEvent::Begin => ProtoEvent::Enter(0),
CaptureEvent::Input(e) => ProtoEvent::Input(e),
},
/* send additional enter events until acknowleged */
State::AwaitAck => ProtoEvent::Enter(0),
/* released capture */
State::Receiving => ProtoEvent::Leave(0),
};
sender_tx.send((event, addr)).expect("sender closed");
};
Ok(())
}
fn spawn_hook_command(server: &Server, handle: ClientHandle) {
let Some(cmd) = server
.client_manager
.borrow()
.get(handle)
.and_then(|(c, _)| c.cmd.clone())
else {
return;
};
tokio::task::spawn_local(async move {
log::info!("spawning command!");
let mut child = match Command::new("sh").arg("-c").arg(cmd.as_str()).spawn() {
Ok(c) => c,
Err(e) => {
log::warn!("could not execute cmd: {e}");
return;
}
};
match child.wait().await {
Ok(s) => {
if s.success() {
log::info!("{cmd} exited successfully");
} else {
log::warn!("{cmd} exited with {s}");
}
}
Err(e) => log::warn!("{cmd}: {e}"),
}
});
}
fn to_capture_pos(pos: lan_mouse_ipc::Position) -> input_capture::Position {
match pos {
lan_mouse_ipc::Position::Left => input_capture::Position::Left,
lan_mouse_ipc::Position::Right => input_capture::Position::Right,
lan_mouse_ipc::Position::Top => input_capture::Position::Top,
lan_mouse_ipc::Position::Bottom => input_capture::Position::Bottom,
}
}

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@@ -0,0 +1,188 @@
use local_channel::mpsc::{Receiver, Sender};
use std::net::SocketAddr;
use lan_mouse_proto::ProtoEvent;
use tokio::task::JoinHandle;
use lan_mouse_ipc::ClientHandle;
use crate::{client::ClientManager, server::State};
use input_emulation::{self, EmulationError, EmulationHandle, InputEmulation, InputEmulationError};
use lan_mouse_ipc::Status;
use super::{network_task::NetworkError, Server};
#[derive(Clone, Debug)]
pub(crate) enum EmulationRequest {
/// create a new client
Create(EmulationHandle),
/// destroy a client
Destroy(EmulationHandle),
/// input emulation must release keys for client
ReleaseKeys(ClientHandle),
}
pub(crate) fn new(
server: Server,
emulation_rx: Receiver<EmulationRequest>,
udp_rx: Receiver<Result<(ProtoEvent, SocketAddr), NetworkError>>,
sender_tx: Sender<(ProtoEvent, SocketAddr)>,
) -> JoinHandle<()> {
let emulation_task = emulation_task(server, emulation_rx, udp_rx, sender_tx);
tokio::task::spawn_local(emulation_task)
}
async fn emulation_task(
server: Server,
mut rx: Receiver<EmulationRequest>,
mut udp_rx: Receiver<Result<(ProtoEvent, SocketAddr), NetworkError>>,
sender_tx: Sender<(ProtoEvent, SocketAddr)>,
) {
loop {
if let Err(e) = do_emulation(&server, &mut rx, &mut udp_rx, &sender_tx).await {
log::warn!("input emulation exited: {e}");
}
server.set_emulation_status(Status::Disabled);
if server.is_cancelled() {
break;
}
// allow cancellation
loop {
tokio::select! {
_ = rx.recv() => continue, /* need to ignore requests here! */
_ = server.emulation_notified() => break,
_ = server.cancelled() => return,
}
}
}
}
async fn do_emulation(
server: &Server,
rx: &mut Receiver<EmulationRequest>,
udp_rx: &mut Receiver<Result<(ProtoEvent, SocketAddr), NetworkError>>,
sender_tx: &Sender<(ProtoEvent, SocketAddr)>,
) -> Result<(), InputEmulationError> {
let backend = server.config.emulation_backend.map(|b| b.into());
log::info!("creating input emulation...");
let mut emulation = tokio::select! {
r = InputEmulation::new(backend) => r?,
_ = server.cancelled() => return Ok(()),
};
server.set_emulation_status(Status::Enabled);
// add clients
for handle in server.active_clients() {
emulation.create(handle).await;
}
let res = do_emulation_session(server, &mut emulation, rx, udp_rx, sender_tx).await;
emulation.terminate().await; // manual drop
res
}
async fn do_emulation_session(
server: &Server,
emulation: &mut InputEmulation,
rx: &mut Receiver<EmulationRequest>,
udp_rx: &mut Receiver<Result<(ProtoEvent, SocketAddr), NetworkError>>,
sender_tx: &Sender<(ProtoEvent, SocketAddr)>,
) -> Result<(), InputEmulationError> {
let mut last_ignored = None;
loop {
tokio::select! {
udp_event = udp_rx.recv() => {
let udp_event = match udp_event.expect("channel closed") {
Ok(e) => e,
Err(e) => {
log::warn!("network error: {e}");
continue;
}
};
handle_incoming_event(server, emulation, sender_tx, &mut last_ignored, udp_event).await?;
}
emulate_event = rx.recv() => {
match emulate_event.expect("channel closed") {
EmulationRequest::Create(h) => { let _ = emulation.create(h).await; },
EmulationRequest::Destroy(h) => emulation.destroy(h).await,
EmulationRequest::ReleaseKeys(c) => emulation.release_keys(c).await?,
}
}
_ = server.notifies.cancel.cancelled() => break Ok(()),
}
}
}
async fn handle_incoming_event(
server: &Server,
emulate: &mut InputEmulation,
sender_tx: &Sender<(ProtoEvent, SocketAddr)>,
last_ignored: &mut Option<SocketAddr>,
event: (ProtoEvent, SocketAddr),
) -> Result<(), EmulationError> {
let (event, addr) = event;
log::trace!("{:20} <-<-<-<------ {addr}", event.to_string());
// get client handle for addr
let Some(handle) =
activate_client_if_exists(&mut server.client_manager.borrow_mut(), addr, last_ignored)
else {
return Ok(());
};
match (event, addr) {
(ProtoEvent::Pong, _) => { /* ignore pong events */ }
(ProtoEvent::Ping, addr) => {
let _ = sender_tx.send((ProtoEvent::Pong, addr));
}
(ProtoEvent::Leave(_), _) => emulate.release_keys(handle).await?,
(ProtoEvent::Ack(_), _) => server.set_state(State::Sending),
(ProtoEvent::Enter(_), _) => {
server.set_state(State::Receiving);
sender_tx
.send((ProtoEvent::Ack(0), addr))
.expect("no channel")
}
(ProtoEvent::Input(e), _) => {
if let State::Receiving = server.get_state() {
log::trace!("{event} => emulate");
emulate.consume(e, handle).await?;
let has_pressed_keys = emulate.has_pressed_keys(handle);
server.update_pressed_keys(handle, has_pressed_keys);
if has_pressed_keys {
server.restart_ping_timer();
}
}
}
}
Ok(())
}
fn activate_client_if_exists(
client_manager: &mut ClientManager,
addr: SocketAddr,
last_ignored: &mut Option<SocketAddr>,
) -> Option<ClientHandle> {
let Some(handle) = client_manager.get_client(addr) else {
// log ignored if it is the first event from the client in a series
if last_ignored.is_none() || last_ignored.is_some() && last_ignored.unwrap() != addr {
log::warn!("ignoring events from client {addr}");
last_ignored.replace(addr);
}
return None;
};
// next event can be logged as ignored again
last_ignored.take();
let (_, client_state) = client_manager.get_mut(handle)?;
// reset ttl for client
client_state.alive = true;
// set addr as new default for this client
client_state.active_addr = Some(addr);
Some(handle)
}

View File

@@ -0,0 +1,99 @@
use local_channel::mpsc::{Receiver, Sender};
use std::{io, net::SocketAddr};
use thiserror::Error;
use tokio::{net::UdpSocket, task::JoinHandle};
use super::Server;
use lan_mouse_proto::{ProtoEvent, ProtocolError};
pub(crate) async fn new(
server: Server,
udp_recv_tx: Sender<Result<(ProtoEvent, SocketAddr), NetworkError>>,
udp_send_rx: Receiver<(ProtoEvent, SocketAddr)>,
) -> io::Result<JoinHandle<()>> {
// bind the udp socket
let listen_addr = SocketAddr::new("0.0.0.0".parse().unwrap(), server.port.get());
let mut socket = UdpSocket::bind(listen_addr).await?;
Ok(tokio::task::spawn_local(async move {
let mut sender_rx = udp_send_rx;
loop {
let udp_receiver = udp_receiver(&socket, &udp_recv_tx);
let udp_sender = udp_sender(&socket, &mut sender_rx);
tokio::select! {
_ = udp_receiver => break, /* channel closed */
_ = udp_sender => break, /* channel closed */
_ = server.notifies.port_changed.notified() => update_port(&server, &mut socket).await,
_ = server.cancelled() => break, /* cancellation requested */
}
}
}))
}
async fn update_port(server: &Server, socket: &mut UdpSocket) {
let new_port = server.port.get();
let current_port = socket.local_addr().expect("socket not bound").port();
// if port is the same, we dont need to change it
if current_port == new_port {
return;
}
// bind new socket
let listen_addr = SocketAddr::new("0.0.0.0".parse().unwrap(), new_port);
let new_socket = UdpSocket::bind(listen_addr).await;
let err = match new_socket {
Ok(new_socket) => {
*socket = new_socket;
None
}
Err(e) => Some(e.to_string()),
};
// notify frontend of the actual port
let port = socket.local_addr().expect("socket not bound").port();
server.notify_port_changed(port, err);
}
async fn udp_receiver(
socket: &UdpSocket,
receiver_tx: &Sender<Result<(ProtoEvent, SocketAddr), NetworkError>>,
) {
loop {
let event = receive_event(socket).await;
receiver_tx.send(event).expect("channel closed");
}
}
async fn udp_sender(socket: &UdpSocket, rx: &mut Receiver<(ProtoEvent, SocketAddr)>) {
loop {
let (event, addr) = rx.recv().await.expect("channel closed");
if let Err(e) = send_event(socket, event, addr) {
log::warn!("udp send failed: {e}");
};
}
}
#[derive(Debug, Error)]
pub(crate) enum NetworkError {
#[error(transparent)]
Protocol(#[from] ProtocolError),
#[error("network error: `{0}`")]
Io(#[from] io::Error),
}
async fn receive_event(socket: &UdpSocket) -> Result<(ProtoEvent, SocketAddr), NetworkError> {
let mut buf = [0u8; lan_mouse_proto::MAX_EVENT_SIZE];
let (_len, src) = socket.recv_from(&mut buf).await?;
let event = ProtoEvent::try_from(buf)?;
Ok((event, src))
}
fn send_event(sock: &UdpSocket, e: ProtoEvent, addr: SocketAddr) -> Result<usize, NetworkError> {
log::trace!("{:20} ------>->->-> {addr}", e.to_string());
let (data, len): ([u8; lan_mouse_proto::MAX_EVENT_SIZE], usize) = e.into();
// When udp blocks, we dont want to block the event loop.
// Dropping events is better than potentially crashing the input capture.
Ok(sock.try_send_to(&data[..len], addr)?)
}

138
src/server/ping_task.rs Normal file
View File

@@ -0,0 +1,138 @@
use std::{net::SocketAddr, time::Duration};
use lan_mouse_proto::ProtoEvent;
use local_channel::mpsc::Sender;
use tokio::task::JoinHandle;
use lan_mouse_ipc::ClientHandle;
use super::{capture_task::CaptureRequest, emulation_task::EmulationRequest, Server, State};
const MAX_RESPONSE_TIME: Duration = Duration::from_millis(500);
pub(crate) fn new(
server: Server,
sender_ch: Sender<(ProtoEvent, SocketAddr)>,
emulate_notify: Sender<EmulationRequest>,
capture_notify: Sender<CaptureRequest>,
) -> JoinHandle<()> {
// timer task
tokio::task::spawn_local(async move {
tokio::select! {
_ = server.notifies.cancel.cancelled() => {}
_ = ping_task(&server, sender_ch, emulate_notify, capture_notify) => {}
}
})
}
async fn ping_task(
server: &Server,
sender_ch: Sender<(ProtoEvent, SocketAddr)>,
emulate_notify: Sender<EmulationRequest>,
capture_notify: Sender<CaptureRequest>,
) {
loop {
// wait for wake up signal
server.ping_timer_notified().await;
loop {
let receiving = server.state.get() == State::Receiving;
let (ping_clients, ping_addrs) = {
let mut client_manager = server.client_manager.borrow_mut();
let ping_clients: Vec<ClientHandle> = if receiving {
// if receiving we care about clients with pressed keys
client_manager
.get_client_states()
.filter(|(_, (_, s))| s.has_pressed_keys)
.map(|(h, _)| h)
.collect()
} else {
// if sending we care about the active client
server.active_client.get().iter().cloned().collect()
};
// get relevant socket addrs for clients
let ping_addrs: Vec<SocketAddr> = {
ping_clients
.iter()
.flat_map(|&h| client_manager.get(h))
.flat_map(|(c, s)| {
if s.alive && s.active_addr.is_some() {
vec![s.active_addr.unwrap()]
} else {
s.ips
.iter()
.cloned()
.map(|ip| SocketAddr::new(ip, c.port))
.collect()
}
})
.collect()
};
// reset alive
for (_, (_, s)) in client_manager.get_client_states_mut() {
s.alive = false;
}
(ping_clients, ping_addrs)
};
if receiving && ping_clients.is_empty() {
// receiving and no client has pressed keys
// -> no need to keep pinging
break;
}
// ping clients
for addr in ping_addrs {
if sender_ch.send((ProtoEvent::Ping, addr)).is_err() {
break;
}
}
// give clients time to resond
if receiving {
log::trace!(
"waiting {MAX_RESPONSE_TIME:?} for response from client with pressed keys ..."
);
} else {
log::trace!(
"state: {:?} => waiting {MAX_RESPONSE_TIME:?} for client to respond ...",
server.state.get()
);
}
tokio::time::sleep(MAX_RESPONSE_TIME).await;
// when anything is received from a client,
// the alive flag gets set
let unresponsive_clients: Vec<_> = {
let client_manager = server.client_manager.borrow();
ping_clients
.iter()
.filter_map(|&h| match client_manager.get(h) {
Some((_, s)) if !s.alive => Some(h),
_ => None,
})
.collect()
};
// we may not be receiving anymore but we should respond
// to the original state and not the "new" one
if receiving {
for h in unresponsive_clients {
log::warn!("device not responding, releasing keys!");
let _ = emulate_notify.send(EmulationRequest::ReleaseKeys(h));
}
} else {
// release pointer if the active client has not responded
if !unresponsive_clients.is_empty() {
log::warn!("client not responding, releasing pointer!");
server.state.replace(State::Receiving);
let _ = capture_notify.send(CaptureRequest::Release);
}
}
}
}
}

View File

@@ -1,513 +0,0 @@
use crate::{
capture::{Capture, CaptureType, ICaptureEvent},
client::ClientManager,
config::Config,
connect::LanMouseConnection,
crypto,
dns::{DnsEvent, DnsResolver},
emulation::{Emulation, EmulationEvent},
listen::{LanMouseListener, ListenerCreationError},
};
use futures::StreamExt;
use hickory_resolver::error::ResolveError;
use lan_mouse_ipc::{
AsyncFrontendListener, ClientConfig, ClientHandle, ClientState, FrontendEvent, FrontendRequest,
IpcError, IpcListenerCreationError, Position, Status,
};
use log;
use std::{
collections::{HashMap, HashSet, VecDeque},
io,
net::{IpAddr, SocketAddr},
sync::{Arc, RwLock},
};
use thiserror::Error;
use tokio::{process::Command, signal, sync::Notify};
#[derive(Debug, Error)]
pub enum ServiceError {
#[error(transparent)]
Dns(#[from] ResolveError),
#[error(transparent)]
IpcListen(#[from] IpcListenerCreationError),
#[error(transparent)]
Io(#[from] io::Error),
#[error(transparent)]
ListenError(#[from] ListenerCreationError),
#[error("failed to load certificate: `{0}`")]
Certificate(#[from] crypto::Error),
}
pub struct Service {
/// input capture
capture: Capture,
/// input emulation
emulation: Emulation,
/// dns resolver
resolver: DnsResolver,
/// frontend listener
frontend_listener: AsyncFrontendListener,
/// authorized public key sha256 fingerprints
authorized_keys: Arc<RwLock<HashMap<String, String>>>,
/// (outgoing) client information
client_manager: ClientManager,
/// current port
port: u16,
/// the public key fingerprint for (D)TLS
public_key_fingerprint: String,
/// notify for pending frontend events
frontend_event_pending: Notify,
/// frontend events queued for sending
pending_frontend_events: VecDeque<FrontendEvent>,
/// status of input capture (enabled / disabled)
capture_status: Status,
/// status of input emulation (enabled / disabled)
emulation_status: Status,
/// keep track of registered connections to avoid duplicate barriers
incoming_conns: HashSet<SocketAddr>,
/// map from capture handle to connection info
incoming_conn_info: HashMap<ClientHandle, Incoming>,
next_trigger_handle: u64,
}
#[derive(Debug)]
struct Incoming {
fingerprint: String,
addr: SocketAddr,
pos: Position,
}
impl Service {
pub async fn new(config: Config) -> Result<Self, ServiceError> {
let client_manager = ClientManager::default();
for client in config.get_clients() {
let config = ClientConfig {
hostname: client.hostname,
fix_ips: client.ips.into_iter().collect(),
port: client.port,
pos: client.pos,
cmd: client.enter_hook,
};
let state = ClientState {
active: client.active,
ips: HashSet::from_iter(config.fix_ips.iter().cloned()),
..Default::default()
};
let handle = client_manager.add_client();
client_manager.set_config(handle, config);
client_manager.set_state(handle, state);
}
// load certificate
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()));
// listener + connection
let listener =
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 emulation = Emulation::new(emulation_backend, listener);
// create dns resolver
let resolver = DnsResolver::new()?;
let port = config.port;
let service = Self {
capture,
emulation,
frontend_listener,
resolver,
authorized_keys,
public_key_fingerprint,
client_manager,
frontend_event_pending: Default::default(),
port,
pending_frontend_events: Default::default(),
capture_status: Default::default(),
emulation_status: Default::default(),
incoming_conn_info: Default::default(),
incoming_conns: Default::default(),
next_trigger_handle: 0,
};
Ok(service)
}
pub async fn run(&mut self) -> Result<(), ServiceError> {
for handle in self.client_manager.active_clients() {
// 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.activate_client(handle);
}
loop {
tokio::select! {
request = self.frontend_listener.next() => self.handle_frontend_request(request),
_ = self.frontend_event_pending.notified() => self.handle_frontend_pending().await,
event = self.emulation.event() => self.handle_emulation_event(event),
event = self.capture.event() => self.handle_capture_event(event),
event = self.resolver.event() => self.handle_resolver_event(event),
r = signal::ctrl_c() => break r.expect("failed to wait for CTRL+C"),
}
}
log::info!("terminating service ...");
log::debug!("terminating capture ...");
self.capture.terminate().await;
log::debug!("terminating emulation ...");
self.emulation.terminate().await;
log::debug!("terminating dns resolver ...");
self.resolver.terminate().await;
Ok(())
}
fn handle_frontend_request(&mut self, request: Option<Result<FrontendRequest, IpcError>>) {
let request = match request.expect("frontend listener closed") {
Ok(r) => r,
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::ChangePort(port) => self.change_port(port),
FrontendRequest::Create => self.add_client(),
FrontendRequest::Delete(handle) => self.remove_client(handle),
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::ResolveDns(handle) => self.resolve(handle),
FrontendRequest::Sync => self.sync_frontend(),
FrontendRequest::RemoveAuthorizedKey(key) => self.remove_authorized_key(key),
}
}
async fn handle_frontend_pending(&mut self) {
while let Some(event) = self.pending_frontend_events.pop_front() {
self.frontend_listener.broadcast(event).await;
}
}
fn handle_emulation_event(&mut self, event: EmulationEvent) {
match event {
EmulationEvent::Connected {
addr,
pos,
fingerprint,
} => {
// 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));
} else {
self.update_incoming(addr, pos, fingerprint);
}
}
EmulationEvent::Disconnected { addr } => {
if let Some(addr) = self.remove_incoming(addr) {
self.notify_frontend(FrontendEvent::IncomingDisconnected(addr));
}
}
EmulationEvent::PortChanged(port) => match port {
Ok(port) => {
self.port = port;
self.notify_frontend(FrontendEvent::PortChanged(port, None));
}
Err(e) => self
.notify_frontend(FrontendEvent::PortChanged(self.port, Some(format!("{e}")))),
},
EmulationEvent::EmulationDisabled => {
self.emulation_status = Status::Disabled;
self.notify_frontend(FrontendEvent::EmulationStatus(self.emulation_status));
}
EmulationEvent::EmulationEnabled => {
self.emulation_status = Status::Enabled;
self.notify_frontend(FrontendEvent::EmulationStatus(self.emulation_status));
}
EmulationEvent::ReleaseNotify => self.capture.release(),
}
}
fn handle_capture_event(&mut self, event: ICaptureEvent) {
match event {
ICaptureEvent::CaptureBegin(handle) => {
// we entered the capture zone for an incoming connection
// => notify it that its capture should be released
if let Some(incoming) = self.incoming_conn_info.get(&handle) {
self.emulation.send_leave_event(incoming.addr);
}
}
ICaptureEvent::CaptureDisabled => {
self.capture_status = Status::Disabled;
self.notify_frontend(FrontendEvent::CaptureStatus(self.capture_status));
}
ICaptureEvent::CaptureEnabled => {
self.capture_status = Status::Enabled;
self.notify_frontend(FrontendEvent::CaptureStatus(self.capture_status));
}
ICaptureEvent::ClientEntered(handle) => {
log::info!("entering client {handle} ...");
self.spawn_hook_command(handle);
}
}
}
fn handle_resolver_event(&mut self, event: DnsEvent) {
let handle = match event {
DnsEvent::Resolving(handle) => {
self.client_manager.set_resolving(handle, true);
handle
}
DnsEvent::Resolved(handle, hostname, ips) => {
self.client_manager.set_resolving(handle, false);
if let Err(e) = &ips {
log::warn!("could not resolve {hostname}: {e}");
}
let ips = ips.unwrap_or_default();
self.client_manager.set_dns_ips(handle, ips);
handle
}
};
self.notify_frontend(FrontendEvent::Changed(handle));
}
fn resolve(&self, handle: ClientHandle) {
if let Some(hostname) = self.client_manager.get_hostname(handle) {
self.resolver.resolve(handle, hostname);
}
}
fn sync_frontend(&mut self) {
self.enumerate();
self.notify_frontend(FrontendEvent::EmulationStatus(self.emulation_status));
self.notify_frontend(FrontendEvent::CaptureStatus(self.capture_status));
self.notify_frontend(FrontendEvent::PortChanged(self.port, None));
self.notify_frontend(FrontendEvent::PublicKeyFingerprint(
self.public_key_fingerprint.clone(),
));
let keys = self.authorized_keys.read().expect("lock").clone();
self.notify_frontend(FrontendEvent::AuthorizedUpdated(keys));
}
const ENTER_HANDLE_BEGIN: u64 = u64::MAX / 2 + 1;
fn add_incoming(&mut self, addr: SocketAddr, pos: Position, fingerprint: String) {
let handle = Self::ENTER_HANDLE_BEGIN + self.next_trigger_handle;
self.next_trigger_handle += 1;
self.capture.create(handle, pos, CaptureType::EnterOnly);
self.incoming_conns.insert(addr);
self.incoming_conn_info.insert(
handle,
Incoming {
fingerprint,
addr,
pos,
},
);
}
fn update_incoming(&mut self, addr: SocketAddr, pos: Position, fingerprint: String) {
let incoming = self
.incoming_conn_info
.iter_mut()
.find(|(_, i)| i.addr == addr)
.map(|(_, i)| i)
.expect("no such client");
let mut changed = false;
if incoming.fingerprint != fingerprint {
incoming.fingerprint = fingerprint.clone();
changed = true;
}
if incoming.pos != pos {
incoming.pos = pos;
changed = true;
}
if changed {
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));
}
}
fn remove_incoming(&mut self, addr: SocketAddr) -> Option<SocketAddr> {
let handle = self
.incoming_conn_info
.iter()
.find(|(_, incoming)| incoming.addr == addr)
.map(|(k, _)| *k)?;
self.capture.destroy(handle);
self.incoming_conns.remove(&addr);
self.incoming_conn_info
.remove(&handle)
.map(|incoming| incoming.addr)
}
fn notify_frontend(&mut self, event: FrontendEvent) {
self.pending_frontend_events.push_back(event);
self.frontend_event_pending.notify_one();
}
fn add_authorized_key(&mut self, desc: String, fp: String) {
self.authorized_keys.write().expect("lock").insert(fp, desc);
let keys = self.authorized_keys.read().expect("lock").clone();
self.notify_frontend(FrontendEvent::AuthorizedUpdated(keys));
}
fn remove_authorized_key(&mut self, fp: String) {
self.authorized_keys.write().expect("lock").remove(&fp);
let keys = self.authorized_keys.read().expect("lock").clone();
self.notify_frontend(FrontendEvent::AuthorizedUpdated(keys));
}
fn enumerate(&mut self) {
let clients = self.client_manager.get_client_states();
self.notify_frontend(FrontendEvent::Enumerate(clients));
}
fn add_client(&mut self) {
let handle = self.client_manager.add_client();
log::info!("added client {handle}");
let (c, s) = self.client_manager.get_state(handle).unwrap();
self.notify_frontend(FrontendEvent::Created(handle, c, s));
}
fn set_client_active(&mut self, handle: ClientHandle, active: bool) {
if active {
self.activate_client(handle);
} else {
self.deactivate_client(handle);
}
}
fn deactivate_client(&mut self, handle: ClientHandle) {
log::debug!("deactivating client {handle}");
if self.client_manager.deactivate_client(handle) {
self.capture.destroy(handle);
self.notify_frontend(FrontendEvent::Changed(handle));
log::info!("deactivated client {handle}");
}
}
fn activate_client(&mut self, handle: ClientHandle) {
log::debug!("activating client");
/* resolve dns on activate */
self.resolve(handle);
/* deactivate potential other client at this position */
let Some(pos) = self.client_manager.get_pos(handle) else {
return;
};
if let Some(other) = self.client_manager.client_at(pos) {
if other != handle {
self.deactivate_client(other);
}
}
/* activate the client */
if self.client_manager.activate_client(handle) {
/* notify capture and frontends */
self.capture.create(handle, pos, CaptureType::Default);
self.notify_frontend(FrontendEvent::Changed(handle));
log::info!("activated client {handle} ({pos})");
}
}
fn change_port(&mut self, port: u16) {
if self.port != port {
self.emulation.request_port_change(port);
} else {
self.notify_frontend(FrontendEvent::PortChanged(self.port, None));
}
}
fn remove_client(&mut self, handle: ClientHandle) {
if self
.client_manager
.remove_client(handle)
.map(|(_, s)| s.active)
.unwrap_or(false)
{
self.capture.destroy(handle);
}
self.notify_frontend(FrontendEvent::Deleted(handle));
}
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));
}
fn update_hostname(&mut self, handle: ClientHandle, hostname: Option<String>) {
if self.client_manager.set_hostname(handle, hostname.clone()) {
self.resolve(handle);
}
self.notify_frontend(FrontendEvent::Changed(handle));
}
fn update_port(&mut self, handle: ClientHandle, port: u16) {
self.client_manager.set_port(handle, port);
self.notify_frontend(FrontendEvent::Changed(handle));
}
fn update_pos(&mut self, handle: ClientHandle, pos: Position) {
// update state in event input emulator & input capture
if self.client_manager.set_pos(handle, pos) {
self.deactivate_client(handle);
self.activate_client(handle);
}
self.notify_frontend(FrontendEvent::Changed(handle));
}
fn broadcast_client(&mut self, handle: ClientHandle) {
let event = self
.client_manager
.get_state(handle)
.map(|(c, s)| FrontendEvent::State(handle, c, s))
.unwrap_or(FrontendEvent::NoSuchClient(handle));
self.notify_frontend(event);
}
fn spawn_hook_command(&self, handle: ClientHandle) {
let Some(cmd) = self.client_manager.get_enter_cmd(handle) else {
return;
};
tokio::task::spawn_local(async move {
log::info!("spawning command!");
let mut child = match Command::new("sh").arg("-c").arg(cmd.as_str()).spawn() {
Ok(c) => c,
Err(e) => {
log::warn!("could not execute cmd: {e}");
return;
}
};
match child.wait().await {
Ok(s) => {
if s.success() {
log::info!("{cmd} exited successfully");
} else {
log::warn!("{cmd} exited with {s}");
}
}
Err(e) => log::warn!("{cmd}: {e}"),
}
});
}
}