Commit Graph

4 Commits

Author SHA1 Message Date
enricobuehler e9a4c4a601 feat(security): add a user-writable plugin ingest inbox for cross-account data
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The LocalService runner can't traverse the interactive user's profile the way
the old SYSTEM runner could — so a plugin can no longer read a file an app
running as *you* produced (the acute case: the Playnite exporter's library
JSON under %APPDATA%). Confirmed on-glass: as LocalService the glob finds
nothing and the profile is un-traversable.

Add the inverse of plugin-state: <config_dir>\ingest, granted BUILTIN\Users
Modify by plugins enable (disable reverts to inherited Users:RX). An
interactive-user app drops ingest\<plugin>\… and the de-privileged runner
reads it there — the one Users-writable carve-out in the otherwise
Users-read-only tree. SDK exports pluginIngestDir(name) to resolve it; on
Linux the systemd --user runner owns the config dir so same-user producers
write there with no grant.

Accepted tradeoff: the inbox is writable by any local user (trusted-single-
user model; it feeds only a LocalService runner). Consumers must treat ingest
data as lower trust than their own state.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-20 00:45:27 +02:00
enricobuehler 73ec6ed9ef feat(security): give the de-privileged runner a writable plugin-state dir
The LocalService runner cannot write anywhere under %ProgramData%\punktfunk
(the config dir is Users-read-only), so a state-writing plugin's saveCache /
config-edit / first-run mkdir all fail EPERM — proven on-glass (rom-manager
only looked fine because its state dir was pre-created by an admin run and a
0-title reconcile skipped the write).

Add the one writable grant the model was missing, keeping the split crisp —
code dirs RX+WA, secrets R, and now a dedicated state root RW:

- plugins enable / build-scripting.ps1: create %ProgramData%\punktfunk  plugin-state and grant LocalService (OI)(CI)(M); disable revokes. Users stay
  read-only, so another non-admin still can't tamper with a plugin's launch
  templates.
- SDK: export pluginStateDir(name) -> <config_dir>/plugin-state/<name>. Same
  path on Linux (the systemd --user runner owns the config dir, writable with
  no grant), so plugins use one branch-free helper.

Plugins must persist under pluginStateDir(), not straight under the config dir.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-20 00:45:27 +02:00
enricobuehler 9b5ca0eff3 feat(security): scope the plugin runner to a capability-limited bearer token
The scripting runner used to hold the console's full-admin mgmt-token — a
plugin defect could rewrite hooks.json (arbitrary command execution) or
administer pairing. The host now mints a second persisted secret,
plugin-token (PUNKTFUNK_PLUGIN_TOKEN), and require_auth grows a third lane
for it: loopback-confined like the admin token, but plugin_may_access
carves out /hooks (read AND write), everything under /pair, /native/pair,
/native/pending, client unpair DELETEs, and other plugins' ui-credential.
Everything a plugin legitimately does (status/library/events/sessions,
its own UI lease) is untouched.

The SDK's zero-config connect() now prefers PUNKTFUNK_PLUGIN_TOKEN /
plugin-token over mgmt-token, so plugins pick the scoped credential up
automatically; a script that genuinely needs the admin surface sets
PUNKTFUNK_MGMT_TOKEN explicitly. Old hosts without a plugin-token fall
back to mgmt-token unchanged. No OpenAPI change: the lane is auth-layer
only.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-20 00:45:27 +02:00
enricobuehler 87114ab186 feat(sdk): @punktfunk/host — the Effect TypeScript SDK (M3)
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New top-level sdk/ package (RFC §7): a typed management-API client plus
the lifecycle event stream, built on Effect, two surfaces over one core:

- @punktfunk/host — the Promise facade front door: connect() resolves
  URL/token/TLS pin from the host's own files (zero config on the box),
  fails fast on bad credentials, pf.events.on() with typed callbacks
  (exact kinds, domain.* prefixes, "*", "dropped", "unknown"),
  pf.request() for the REST surface. Effect never required.
- @punktfunk/host/effect — the PunktfunkHost service + PunktfunkHostLive
  layer, Stream-based events()/eventsRaw(), typed errors
  (AuthError | ApiError | TransportError | VersionSkew — a 2xx that
  fails its schema is a typed skew, not undefined later), and every
  wire shape as an effect/Schema: REST generated via orval
  client:'effect' from api/openapi.json (S3 spike: works well; the
  text/event-stream payload is out of its reach), events hand-mirrored
  from the host's snapshot-tested wire format as a kind-discriminated
  union.

One reconnecting SSE core under both surfaces: spec-shaped parser,
exponential+jittered backoff (capped, resets after a healthy
connection), Last-Event-ID resume, 401 terminal. Default is LIVE tail
only — a fresh notify script must not re-fire on the host's replayed
ring (since: 0 opts into full replay).

TLS: the pin trusts exactly the host's self-signed identity cert
(chain-verified; hostname check waived — the cert is deliberately
CN-only for fingerprint pinning). Bun via fetch tls, Node via an undici
dispatcher (optionalDependency).

definePlugin() accepts both main shapes (async fn | Effect requiring
PunktfunkHost). Examples in both styles; README carries the compat
contract + systemd/Task Scheduler templates.

11 bun tests green (wire decode against the Rust snapshot strings,
SSE parser/reconnect/Last-Event-ID/401, both surfaces vs a mock host).
Live-verified against a real host on Bun AND Node through the pinned
loopback hop: connect → REST mutate → live event received → resume
cursor advanced; a wrong CA is rejected. npm publish + CI wiring
deferred (npm org = RFC open question 1).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-17 00:14:39 +02:00