Files
AuraVPN/aura-gui
xah30 1635190797 feat(aura-gui): privilege escalation via sudo + one-click NOPASSWD installer
The v0.1 GUI's Connect button was broken in practice: the Tauri app launched
from /Applications runs as the desktop user, so `Command::new(aura).spawn()`
started aura without root. aura died in ms with EPERM at TUN creation, faster
than the 1.5 s status poller could catch — the UI just silently flipped back
to "disconnected" with no clue.

## Fix

* `cli_proc::spawn_client` now prepends `sudo -n` on Unix. After spawn it
  blocks for 1.5 s and checks `try_wait`; if the child already exited, it
  reads the stderr ring's last 20 lines and returns an anyhow Error with
  that tail + a hint list of common causes. The Tauri command surfaces it
  to the frontend's `error` state where the UI renders it as a multi-line
  `<pre>` block instead of the previous single-line text.
* `ClientHandle::kill` no longer uses `Child::kill` (SIGKILL) on its sudo
  parent — that would have left aura orphaned with the TUN lingering.
  Sends SIGTERM to sudo, which sudo forwards to aura, giving the inner
  `OsRouteGuard::Drop` 2 s to run cleanup. Falls back to SIGKILL only after
  the grace period.

## One-click NOPASSWD installer

Two new Tauri commands plus a UI banner:

* `check_admin_access` — runs `sudo -n aura --help` and returns whether the
  sudoers entry is in place. Used by the React side to decide whether to
  show the banner.
* `install_sudoers_admin` — runs `osascript ... with administrator
  privileges` which surfaces the native macOS auth dialog, then writes
  `/etc/sudoers.d/aura-gui` scoped to `<aura> client *` only (not arbitrary
  aura invocations), runs `visudo -c` for syntax validation, and reports
  success or the syntax error.

The frontend shows a yellow "One-time setup needed" banner above the
profile list whenever `adminReady === false`. Clicking the button pops the
Mac password dialog once; from then on Connect is a single click with no
prompt.

## UI feedback

* "Connecting…" disabled state on the Connect button while spawn_client's
  1.5 s wait is in progress
* Errors render as monospace `<pre>` so the multi-line stderr tail is
  readable
* `.error` and `.admin-banner` CSS classes added to App.css

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-29 19:32:38 +03:00
..

aura-gui — desktop client for AuraVPN

A Tauri 2 + React TypeScript app that runs in the system tray. It's the GUI front-end for the existing aura CLI: import a provisioned bundle (.tgz), pick a profile, hit Connect, watch the live tunnel status. No clash-verge replacement and no protocol patching — just a thin manager around the existing CLI.

Status

v0.1 (MVP) — scaffolding + core flows. Working:

  • Profile list / import / delete (drop in a provision-client .tgz and you're set)
  • Connect / Disconnect (spawns / kills aura client per profile)
  • Live status panel (peer, tx/rx packets, default action, rules) via admin socket
  • System tray with Open / Disconnect / Quit menu
  • Close button hides to tray (app stays alive in background)

Deferred for v0.2:

  • Auto-start at login (launchd plist / systemd user unit / Windows Run key)
  • Code signing + notarization (macOS) / Authenticode (Windows)
  • Per-profile route overrides editor
  • Live log streaming (currently polled, frontend tails the in-memory ring)
  • Admin status query on Windows (uses Unix sockets today; need named pipe support)

Layout

aura-gui/
├── src-tauri/          (Rust 2 backend, separate Cargo manifest)
│   ├── src/
│   │   ├── lib.rs      (Tauri commands + tray + window plumbing)
│   │   ├── profiles.rs ([app_data]/profiles/ I/O + .tgz import)
│   │   ├── cli_proc.rs (spawns aura client + stderr ring buffer)
│   │   └── admin.rs    (JSON-line admin socket client)
│   ├── Cargo.toml
│   └── tauri.conf.json
├── src/                (React TS frontend)
│   ├── App.tsx
│   └── App.css
├── package.json
└── README.md           (this file)

The src-tauri/ crate is intentionally excluded from the workspace at the repo root (workspace.exclude = ["aura-gui"]) so cargo check --workspace from the project root keeps checking just the protocol crates and doesn't pull tauri/wry/webview into every CI run.

Build

# Backend deps come down with cargo at build time
cd aura-gui
npm install                       # ~10 s, downloads vite + React 19
npm run build                     # frontend tsc + vite build → dist/
npm run tauri build               # full bundle: .dmg / .deb / .msi / .AppImage

For dev:

npm run tauri dev

The first build downloads ~200 MB of native deps (tauri, wry, webview) — subsequent builds are fast (incremental).

Profile storage

Per-platform app-data dir:

OS Path
macOS ~/Library/Application Support/ru.undergr0und.aura/profiles/
Linux ~/.config/AuraVPN/profiles/
Windows %APPDATA%\AuraVPN\profiles\

Each profile is a directory with the same shape as aura provision-client emits:

profiles/<id>/
├── client.toml
├── ca.crt
├── client.crt
├── client.key
└── bridges.signed   (optional, v3.3+)

The id is the basename of the imported .tgz (e.g. client-1.tgzprofiles/client-1/).

Aura binary path

The GUI shells out to aura client for each connection. It defaults to:

  1. /Users/xah30/AuraVPN/target/release/aura if present (dev convenience),
  2. /usr/local/bin/aura on Unix,
  3. C:\Program Files\AuraVPN\aura.exe on Windows.

Change it at runtime via the "Change…" button at the bottom of the window. The setting is session-only for now (persisting it to a config file is a v0.2 todo).

Sudo / admin privileges

aura client creates a TUN device, which needs root on Unix and Administrator on Windows. Currently the GUI does not run with elevated privileges — the operator must launch it from a privileged shell, or via sudo open -a aura-gui on macOS, etc.

v0.2 will add a polkit / authorization-services prompt for the privileged step.

Why not just patch clash-verge?

We thought about it. AuraVPN is an L3 IP-tunnel (like WireGuard); clash-verge / mihomo / sing-box outbounds are L4 per-flow proxies (like Trojan / VLESS / Hysteria). Bridging the two requires either a user-space TCP/IP stack inside the outbound (gVisor) or extensive mihomo patching. Neither was a small lift, and a self-contained tray app turned out to be the shortest path to "vpn that always-on in a clash-verge-ish UX".

A v0.3 stretch goal is to ship a local SOCKS5 listener alongside the TUN, so clash-verge users who already use SOCKS5 outbounds can point at AuraVPN as a SOCKS5 proxy. That requires the gVisor netstack — separate piece of work.