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.
75 lines
1.8 KiB
Markdown
75 lines
1.8 KiB
Markdown
# Moongreet
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A greetd greeter for Wayland, built with Rust + GTK4 + gtk4-layer-shell.
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Part of the Moonarch ecosystem.
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## Features
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- **greetd IPC** — Communicates via `$GREETD_SOCK` (length-prefixed JSON)
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- **User list** — Parsed from `/etc/passwd` (UID 1000–65533)
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- **Avatars** — AccountsService icons, `~/.face` fallback, default SVG with theme tinting
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- **Sessions** — Discovered from `/usr/share/wayland-sessions/` and `/usr/share/xsessions/`
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- **Last user/session** — Remembered in `/var/cache/moongreet/`
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- **Power actions** — Reboot / Shutdown via `loginctl`
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- **Layer Shell** — Fullscreen via gtk4-layer-shell (TOP layer)
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- **Multi-monitor** — Greeter on primary, wallpaper on all monitors
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- **i18n** — German and English (auto-detected from system locale)
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- **Faillock warning** — Warns after 2 failed attempts, locked message after 3
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## Requirements
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- GTK 4
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- gtk4-layer-shell (for Wayland fullscreen)
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- greetd
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## Building
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```bash
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cargo build --release
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```
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## Installation
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```bash
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# Install binary
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sudo install -Dm755 target/release/moongreet /usr/bin/moongreet
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# Install config
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sudo mkdir -p /etc/moongreet
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sudo cp config/moongreet.toml /etc/moongreet/moongreet.toml
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```
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## System Setup
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1. Edit `/etc/moongreet/moongreet.toml` — set an absolute path for the wallpaper.
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2. Create cache directory:
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```bash
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sudo mkdir -p /var/cache/moongreet/last-session
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sudo chown greeter:greeter /var/cache/moongreet
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```
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3. Configure greetd (`/etc/greetd/config.toml`):
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```ini
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[default_session]
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command = "niri -c /etc/greetd/niri-greeter.kdl"
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user = "greeter"
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```
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## Development
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```bash
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# Run tests
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cargo test
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# Build release
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cargo build --release
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# Run locally (without greetd, needs LD_PRELOAD for layer-shell)
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LD_PRELOAD=/usr/lib/libgtk4-layer-shell.so ./target/release/moongreet
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```
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## License
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MIT
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