Files
punktfunk/web
enricobuehler 6fdf7d1511 feat: client-selectable compositor (protocol → host → client → C ABI → mgmt → web)
A client can now request which compositor backend the host drives its virtual
output on (gamescope/KWin/Mutter/wlroots). The host honors the request if that
backend is available, else falls back to auto-detect and reports the resolved
choice back — wire-compatible both directions (no ABI bump).

Protocol (punktfunk-core):
- New CompositorPref (config.rs): Auto|Kwin|Wlroots|Mutter|Gamescope with
  u8/name mappings. Appended as one optional byte to Hello (client preference)
  and Welcome (host's resolved choice). Both decoders already tolerate trailing
  bytes, so old↔new interop is preserved — ABI_VERSION stays 2. Round-trip +
  back-compat (truncated-message) tests.
- C ABI: punktfunk_connect_ex(compositor) + PUNKTFUNK_COMPOSITOR_* constants;
  punktfunk_connect delegates with AUTO, so the existing symbol is unchanged.
  NativeClient::connect / worker_main thread the preference through.

Host:
- vdisplay::available() enumerates usable backends via cheap, side-effect-free
  probes (KWin zkde global, gamescope binary+version, GNOME/Sway env), plus
  Compositor id/label/as_pref/from_pref/all helpers.
- m3 handshake resolves the preference to a concrete backend during the
  handshake (pick_compositor pure + resolved logging), reports it in Welcome,
  and threads it into virtual_stream (replacing the unconditional detect()).
- mgmt GET /v1/compositors lists every backend with availability + the
  auto-detected default (OpenAPI regenerated).

Client:
- punktfunk-client-rs --compositor NAME; logs the host's resolved choice from
  the Welcome ("session offer … compositor=…").

Web console:
- Host page gains a Compositors card (availability + default badges) via the
  codegen'd useListCompositors hook; en/de strings added.

Also fixes a pre-existing, env-dependent test-isolation bug:
mgmt::tests::paired_clients_list_and_unpair seeded the real
~/.config/punktfunk/paired.json (AppState::new loads it), so a real
GameStream-paired client leaked into body[0] on a dev box — now cleared first.

Live-validated against headless KWin: --compositor kwin honored, --compositor
mutter falls back to kwin (available=[kwin, gamescope]), resolved choice
round-trips to the client. Tests: +6 (wire/back-compat, resolution precedence,
endpoint); workspace green, clippy/fmt clean, C ABI harness PASS at abi_version=2,
web typecheck + build clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-10 22:45:41 +02:00
..

punktfunk web — management console

The browser UI for the punktfunk host's management REST API (crates/punktfunk-host/src/mgmt.rs, OpenAPI at docs/api/openapi.json). It shows live status, host capabilities, paired clients, the pairing-PIN flow, and session controls.

Stack: TanStack Start (full SSR) on Bun via Nitro v2 (bun preset) · React Query through orval codegen from the OpenAPI spec · shadcn/ui (Tailwind v4) · Paraglide i18n (en/de). Package manager + runtime: Bun.

Develop

# from web/  — Bun is the toolchain (https://bun.sh)
bun install               # runs `prepare` → codegen (orval + paraglide)
bun run dev               # http://localhost:3000

# The dev server proxies /api → http://127.0.0.1:47990 (the host's management API).
# Point it elsewhere: PUNKTFUNK_MGMT_URL=http://<host>:47990 bun run dev

Start a host with the management API up:

# from the repo root — `serve` brings up the GameStream control plane + the mgmt API:
WAYLAND_DISPLAY=wayland-kde XDG_CURRENT_DESKTOP=KDE \
  cargo run -rp punktfunk-host -- serve
# loopback :47990, no token (a token is mandatory for non-loopback binds).

If the host runs with --mgmt-token, set it under Settings → API token (stored in localStorage, sent as Authorization: Bearer … by the orval fetcher).

Build & run (Nitro + Bun)

bun run build             # → .output/  (Nitro server, `bun` preset, + .output/public assets)
PORT=3000 HOST=0.0.0.0 \
  PUNKTFUNK_UI_PASSWORD=PUNKTFUNK_MGMT_TOKEN=\
  bun run start           # = bun run .output/server/index.mjs
bun run lint              # tsc --noEmit

The built Nitro Bun server SSR-renders the app and is the only thing exposed on the LAN. Run it on the same box as the host; it serves the console on :3000 (or $PORT).

Auth (backend-for-frontend)

Single-user, login-gated. Config via env (see .env.example):

  • The console requires a login (PUNKTFUNK_UI_PASSWORD). On success the server sets a sealed session cookie (h3 useSession, AES-GCM). server/middleware/auth.ts gates every request — pages redirect to /login, /api returns 401 — and fails closed (503) if PUNKTFUNK_UI_PASSWORD is unset, so a misconfigured LAN server admits no one.
  • The management API stays loopback-only + token — never LAN-exposed. The web server holds PUNKTFUNK_MGMT_TOKEN server-side and injects it when proxying /api/**PUNKTFUNK_MGMT_URL (server/routes/api/[...].ts). The token never reaches the browser; the browser only ever holds the session cookie.

So: browser ──password──▶ web server (session cookie) ──mgmt token, server-side──▶ mgmt API. Run the host with a matching token: cargo run -rp punktfunk-host -- serve + PUNKTFUNK_MGMT_TOKEN=… (or --mgmt-token …). vite dev has no gate (localhost-only) and proxies straight to the loopback mgmt API.

Toolchain notes (load-bearing): TanStack Start's start-plugin-core peer-requires Vite ≥ 7 — on Vite 6 the build's prerender/post-build hook silently doesn't run. @vitejs/plugin-react must match Vite (v5 ↔ Vite 7, v6 ↔ Vite 8); it's required even for dev (TanStack Start's dev mode needs the React Refresh runtime, else a blank screen). Nitro is the server target — without it vite build only emits client+SSR bundles, no deployable server. The Nitro bun preset makes .output/server/index.mjs Bun-runnable.

Codegen

Generated code is not committed (gitignored) — reproduced from sources:

  • bun run codegen — regenerate the API client (orval) + i18n runtime (paraglide). Runs on bun install (prepare) and before dev/build (pre* for orval; the Vite plugin compiles paraglide on dev/build).
  • After a management-API change, regenerate the spec on the Rust side first: cargo run -p punktfunk-host -- openapi > docs/api/openapi.json, then bun run api:gen.

Layout

src/
  routes/            file-based routes (index=dashboard, host, clients, pairing, settings)
  components/
    app-shell.tsx    sidebar nav + language switcher
    ui/              shadcn/ui primitives (button, card, table, …)
    query-state.tsx  loading/error wrapper (incl. 401 → "set a token")
  api/
    fetcher.ts       orval mutator: base URL, bearer token, JSON, throwing ApiError
    gen/             GENERATED react-query hooks + models (orval)
  lib/i18n.ts        reactive Paraglide locale hook
  paraglide/         GENERATED i18n runtime (paraglide)
messages/{en,de}.json   translation sources