nevaforget
226bbb75e4
Complete rewrite of the greetd greeter from Python/PyGObject to Rust/gtk4-rs for consistency with moonset, single binary without Python runtime, and improved security through Rust memory safety. Modules: main, greeter, ipc, config, i18n, users, sessions, power 86 unit tests covering all modules including login_worker IPC flow. Security hardening: shell-word splitting for exec_cmd, absolute path validation for session binaries, session-name sanitization, absolute loginctl path, atomic IPC writes.
56 lines
2.2 KiB
Markdown
56 lines
2.2 KiB
Markdown
# Moongreet
|
|
|
|
**Name**: Selene (Mondgöttin — passend zu Moon-greet)
|
|
|
|
## Projekt
|
|
|
|
Moongreet ist ein greetd-Greeter für Wayland, gebaut mit Rust + gtk4-rs + gtk4-layer-shell.
|
|
Teil des Moonarch-Ökosystems.
|
|
|
|
## Tech-Stack
|
|
|
|
- Rust (Edition 2024), gtk4-rs 0.11, glib 0.22
|
|
- gtk4-layer-shell 0.8 für Wayland Layer Shell (TOP Layer)
|
|
- greetd IPC über Unix Domain Socket (length-prefixed JSON)
|
|
- `cargo test` für Unit-Tests
|
|
|
|
## Projektstruktur
|
|
|
|
- `src/` — Rust-Quellcode (main.rs, greeter.rs, ipc.rs, config.rs, users.rs, sessions.rs, i18n.rs, power.rs)
|
|
- `resources/` — GResource-Assets (style.css, wallpaper.jpg, default-avatar.svg)
|
|
- `config/` — Beispiel-Konfigurationsdateien für `/etc/moongreet/` und `/etc/greetd/`
|
|
|
|
## Kommandos
|
|
|
|
```bash
|
|
# Tests ausführen
|
|
cargo test
|
|
|
|
# Release-Build
|
|
cargo build --release
|
|
|
|
# Greeter starten (nur zum Testen, braucht normalerweise greetd)
|
|
LD_PRELOAD=/usr/lib/libgtk4-layer-shell.so ./target/release/moongreet
|
|
```
|
|
|
|
## Architektur
|
|
|
|
- `ipc.rs` — greetd Socket-Kommunikation (4-byte LE header + JSON)
|
|
- `users.rs` — Benutzer aus /etc/passwd, Avatare (AccountsService + ~/.face), Symlink-Rejection
|
|
- `sessions.rs` — Wayland/X11 Sessions aus .desktop Files
|
|
- `power.rs` — Reboot/Shutdown via loginctl
|
|
- `i18n.rs` — Locale-Erkennung (LANG / /etc/locale.conf) und String-Tabellen (DE/EN)
|
|
- `config.rs` — TOML-Config ([appearance] background, gtk-theme) + Wallpaper-Fallback
|
|
- `greeter.rs` — GTK4 UI (Overlay-Layout), Login-Flow via greetd IPC, Faillock-Warnung, Avatar-Cache, Last-User/Last-Session Persistence
|
|
- `main.rs` — Entry Point, GTK App, Layer Shell Setup, Multi-Monitor
|
|
- `resources/style.css` — Catppuccin-inspiriertes Theme
|
|
|
|
## Design Decisions
|
|
|
|
- **TOP Layer statt OVERLAY**: Greeter läuft unter greetd, nicht über Waybar
|
|
- **GResource-Bundle**: CSS, Wallpaper und Default-Avatar sind in die Binary kompiliert
|
|
- **Async Login**: `glib::spawn_future_local` + `gio::spawn_blocking` statt raw Threads
|
|
- **Socket-Cancellation**: `Arc<Mutex<Option<UnixStream>>>` + `AtomicBool` für saubere Abbrüche
|
|
- **Avatar-Cache**: `HashMap<String, gdk::Texture>` in `Rc<RefCell<GreeterState>>`
|
|
- **Symmetrie mit moonset**: Gleiche Patterns (i18n, config, users, power, GResource)
|