# 🐉 DragonMoonlight

A fork of [moonlight-qt](https://github.com/moonlight-stream/moonlight-qt) with native [DragonRelay](https://forge.wilddragon.net/zgaetano/dragonrelay) integration and an embedded WireGuard client.

Instead of managing a separate VPN app, DragonMoonlight authenticates against your DragonRelay server, auto-provisions a WireGuard peer, brings up the tunnel, and presents your streaming hosts — all in one UI.

## Architecture

```
┌─────────────────────────────────┐       ┌──────────────────────────────┐
│  DragonMoonlight (this fork)    │       │  DragonRelay (homelab)       │
│                                 │       │                              │
│  RelayClient ─── HTTPS ────────►│──────►│  POST /api/vpn/peer          │
│       │                         │       │  (returns WireGuard .conf)   │
│       ▼                         │       │                              │
│  TunnelManager                  │       │  wg0 interface               │
│  ├─ boringtun (WireGuard/Rust)  │◄═════►│  10.99.0.1                   │
│  └─ utun (macOS, no root*)      │  WG   │                              │
│                                 │       │  mDNS → Apollo/Artemis hosts │
│  DragonRelayView.qml            │       └──────────────────────────────┘
│  (host list, stream button)     │
└─────────────────────────────────┘

* Route setup requires one macOS admin auth dialog per session.
```

## New files (vs upstream moonlight-qt)

```
app/vpn/
├── boringtun_ffi.h          C ABI for the boringtun Rust library
├── wireguardconfig.h/.cpp   WireGuard .conf parser
├── tunnelmanager.h          Cross-platform tunnel interface
├── tunnelmanager_mac.mm     macOS implementation (utun + boringtun)
├── relayclient.h/.cpp       HTTP client for the DragonRelay API
└── CMakeLists_vpn.cmake     Build system additions

app/gui/
└── DragonRelayView.qml      Connect / host-list UI page

scripts/
└── build-boringtun.sh       Compiles boringtun as a static library

deps/boringtun/              Created by build-boringtun.sh (git-ignored)
```

## Building (macOS)

### 1. Prerequisites

```bash
# Xcode Command Line Tools
xcode-select --install

# Homebrew
brew install qt@6 cmake rustup

# Rust toolchain
rustup-init
rustup target add aarch64-apple-darwin x86_64-apple-darwin
```

### 2. Clone upstream moonlight-qt into this repo

This repo holds only the DragonMoonlight additions.  You need to merge with upstream:

```bash
git clone https://forge.wilddragon.net/zgaetano/dragonmoonlight
cd dragonmoonlight

# Add upstream as a remote and merge
git remote add upstream https://github.com/moonlight-stream/moonlight-qt.git
git fetch upstream
git merge upstream/master --allow-unrelated-histories
git submodule update --init --recursive
```

### 3. Build boringtun

```bash
bash scripts/build-boringtun.sh --universal
# Produces: deps/boringtun/libboringtun.a (universal arm64+x86_64)
```

### 4. Integrate the VPN CMake snippet

In moonlight-qt's root `CMakeLists.txt`, add **after** the main target is defined:

```cmake
include(app/vpn/CMakeLists_vpn.cmake)
```

### 5. Register DragonRelayBackend with QML

In `app/main.cpp` (or wherever the QML engine is set up), add:

```cpp
#include "dragonrelaybackend.h"   // thin QObject wrapping RelayClient + TunnelManager

// Before engine.load():
DragonRelayBackend relayBackend;
engine.rootContext()->setContextProperty("dragonRelay", &relayBackend);
```

`DragonRelayBackend` is the next class to write — it wires `RelayClient` ↔ `TunnelManager` ↔ QML.

### 6. Add the view to the navigation stack

In `app/gui/main.qml` or the computer browser stack, push `DragonRelayView` alongside the normal `PcView`.

### 7. Build

```bash
mkdir build && cd build
cmake .. -DCMAKE_PREFIX_PATH="$(brew --prefix qt@6)"
make -j$(sysctl -n hw.logicalcpu)
```

## How it works (connection flow)

```
User clicks "Connect" in DragonRelayView
       │
       ▼
RelayClient.login(url, user, pass)
       │ POST /api/auth/login → JWT
       ▼
RelayClient.provisionVPN(deviceName)
       │ POST /api/vpn/peer → {id, conf}
       ▼
WireGuardConfig.fromConf(conf)
       │
       ▼
TunnelManager.start(cfg)
       ├─ new_tunnel() via boringtun FFI
       ├─ openUtun()  → utunN fd (no root)
       ├─ UDP socket  → server endpoint
       ├─ configureInterface() → osascript admin dialog (once per session)
       │    ifconfig + route add for 10.99.0.0/24
       └─ I/O threads (tunToUdp, udpToTun, ticker)
              │
              ▼
       WireGuard handshake completes
              │
              ▼
       RelayClient.fetchHosts() → GET /api/hosts
              │
              ▼
       DragonRelayView shows host list
              │
       User clicks "Stream"
              │
              ▼
       dragonRelay.streamHost(ip, "Desktop")
       (launches Moonlight streaming session)
```

## Privilege model

| Operation | Root / Admin? |
|---|---|
| Open utun device | No |
| `ifconfig utunN <ip> up` | Yes — one-time macOS auth dialog |
| `route add -net 10.99.0.0/24 -interface utunN` | Yes — same dialog, batched |
| Streaming (RTSP/UDP to Apollo host) | No |

The admin dialog appears once when the VPN first connects.  Subsequent reconnects in the same session reuse the saved original-gateway and only need the dialog again if the interface was torn down.

**Production path:** Replace the `osascript` approach with a signed, sandboxed SMJobBless privileged helper or a NetworkExtension PacketTunnelProvider entitlement (requires Apple developer approval).

## DragonRelayBackend (next step)

The QML view is wired to a `dragonRelay` context property.  The next file to write is `app/vpn/dragonrelaybackend.h/.cpp` — a `QObject` that:

- Owns `RelayClient` and `TunnelManager`
- Exposes `Q_PROPERTY` values (`status`, `statusText`, `hosts`) to QML
- Has `Q_INVOKABLE` methods: `connectRelay()`, `disconnectRelay()`, `streamHost()`
- Translates `RelayClient` and `TunnelManager` signals into QML-visible state changes

## Roadmap

- [ ] `DragonRelayBackend` C++ ↔ QML bridge
- [ ] Integrate `DragonRelayView` into upstream `PcView.qml` navigation
- [ ] Windows support (`tunnelmanager_win.cpp` using Wintun)
- [ ] Linux support (`tunnelmanager_linux.cpp` using kernel WireGuard)
- [ ] Replace `osascript` with SMJobBless privileged helper on macOS
- [ ] Replace plain-text password storage with system keychain (QKeychain)
- [ ] `connected()` signal from first received packet rather than a fixed timer
- [ ] Multi-monitor / display selection (Sunshine API integration)