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Author SHA1 Message Date
Dragan Spiridonov 31fb3d53f6 feat(cli): wifi-densepose login — Cognitum sign-in (ADR-271 phase 2)
Phase 1 could verify a token and phase 3 could gate on one, but there was no
way for a user to OBTAIN one. This closes that: sign in with a Cognitum account
and get a token a RuView sensing server accepts, instead of everyone sharing
one static RUVIEW_API_TOKEN string.

Lives in `ruview-auth` behind a non-default `login` feature rather than in the
CLI, so the Tauri desktop app can reuse it instead of growing a second copy.
A server built with default features still gets the verifier and nothing else —
no reqwest, no tokio net, no browser launcher. (This amends ADR-271's "no login
flow in this crate" note; the reason for that line was to keep the server lean,
and a feature gate achieves it without duplication.)

Ported from meta-proxy's src/oauth/, cross-checked against musica's
cognitum_provider.rs — two independent implementations against this same AS.
Where they agree, this follows both: redirect path EXACTLY /oauth/callback,
60-second refresh skew, OOB fallback on SSH/CONTAINER//.dockerenv.

Refresh is the part with teeth. Identity rotates refresh tokens with reuse
detection, so presenting a spent one revokes the whole session family. Both
obvious implementations are wrong: refreshing concurrently looks like replay,
and retrying a failed refresh with the same token IS the replay. So
`Session::ensure_fresh` holds an async mutex across the await, re-checks expiry
after acquiring it (the waiter usually finds the work already done), persists
the rotated token BEFORE returning it, and never retries. A missing expires_at
counts as expired rather than being given a guessed default.

Least scope by default: `login` requests `sensing:read`. `--admin` adds
`sensing:admin` explicitly, and requests both because there is no scope
hierarchy server-side. A session that streams poses should not casually hold
the capability to delete the model it streams through.

Credentials are written atomically and 0600 (temp file, chmod BEFORE rename) —
the same discipline the seed applies to its cloud key. `logout` is local-only
and says so: it makes this machine unable to act as you, but revoking the
session everywhere is an account-level action.

Also `whoami`, which reports whether the stored token is live — an
expired-looking session is the most common reason a command starts 401ing, and
it should be visible directly rather than inferred from a failure elsewhere.

Verified against PRODUCTION, not just locally: authorize URLs built by this
exact code path return HTTP 200 from auth.cognitum.one for both
`sensing:read` and `sensing:read sensing:admin`, which exercises the real
client_id, scope encoding, PKCE parameters and redirect_uri shape.

Tests: 74 with --features login (51 unit + 21 verifier matrix + 2 doctests),
including the RFC 7636 Appendix B vector, multi-scope URL encoding (a space
that is hand-formatted rather than encoded silently truncates the request), a
real TCP callback round-trip, callback timeout, 0600 permissions asserted on
disk, atomic-save leaving no temp file, and refresh-window boundaries.
Unchanged: 43 with default features, 501 in the sensing server.

Co-Authored-By: Ruflo & AQE
2026-07-22 17:53:42 +02:00
Dragan Spiridonov 499cec7914 feat(auth): ruview-auth — offline Cognitum OAuth access-token verification (ADR-271)
RuView's `/api/v1/*` is gated today by `RUVIEW_API_TOKEN`: one shared secret,
no expiry, no per-user attribution. This adds the verifier half of replacing
that with Cognitum identity — RuView as an OAuth **resource server**, so a user
signs in to their own sensing server with their Cognitum account.

Note the direction: RuView does not call Cognitum. It never obtains a token for
its own use; it verifies tokens users present. Every other Cognitum OAuth
integration in the org (meta-proxy, musica, metaharness, the dashboard CLI) is
the client side of a plane RuView doesn't have. The one existing resource-server
verifier is `meta-llm/src/auth/oauthBearer.ts`, and this crate is a port of its
accept-rule — divergence would be a bug, not a preference: a token meta-llm
rejects must not be one RuView accepts.

Verification is OFFLINE, and that is a requirement rather than an optimisation.
RuView runs on Pi-class hardware that loses WAN, and identity publishes no
introspection endpoint even when the network is up. So: ES256 over identity's
published JWKS, cached by `kid`.

What it accepts, mirroring oauthBearer.ts:
  typ == "access" AND NOT setup AND NOT workload AND account_id non-empty AND
  exp in the future AND iss matches verbatim AND the required scope is held.

Long-lived setup (365-day) and workload credentials are refused outright for
identity's own stated reason: their revocation lives in `oauth_setup_tokens`,
and RuView — like meta-llm — has no database to check it. A 15-minute access
token needs no revocation round-trip because it expires faster than revocation
propagates; a 365-day one does.

Scope is the capability boundary, and it has to be. Cognitum access tokens carry
no `aud`, and `client_id` cannot substitute because clients borrow each other's
registrations (musica ships DEFAULT_CLIENT_ID = "meta-proxy"). `sensing:read`
covers streams and inference; `sensing:admin` covers training, model delete and
recording delete. No hierarchy — admin does not imply read; consent means what
it said. Registered in identity migration 0016 (cognitum-one/dashboard#116).

Design notes:
- `ureq`, not `reqwest`: the sensing server deliberately chose ureq as "the
  smallest" HTTP client, and pulling reqwest in here would reverse that for the
  whole graph. Transport sits behind a `JwksFetcher` trait, so a host can supply
  its own and take no HTTP dependency at all (feature `ureq-transport`, default).
- A JWKS refetch failure is survivable while a key set is already cached: a key
  that verified a minute ago has not stopped being valid because the network
  blipped, and failing closed there logs every user out of their own sensing
  server whenever their internet wobbles. We fail closed in exactly one case —
  no key set has ever been fetched.
- Unknown `kid` forces one refetch so rotation is picked up without waiting out
  the TTL, rate-limited so junk-kid tokens can't become a request amplifier
  aimed at identity.
- Expiry is reported distinctly from a bad signature: on an RTC-less Pi that is
  usually a clock-sync fault, and an operator must be able to tell them apart.
- Test keypairs are generated at runtime, never committed. This repo tracks zero
  `.pem` files and committed key material shouldn't start here — it also means
  no fixture can drift out of sync with the JWKS it's served by.

Tests: 41 green (19 unit + 21 matrix + 1 doctest) under BOTH
`cargo test --no-default-features` (the repo's canonical gate) and default
features. The matrix signs real ES256 tokens rather than asserting on strings,
and covers alg:none, forged signature, spliced payload, unknown kid, expired,
leeway boundaries both sides, wrong issuer, issuer differing only by a trailing
slash, missing/!=access typ, setup and workload smuggled onto typ=access,
missing and empty account_id, and scope escalation.

The highest-value case is `g2_a_genuinely_valid_token_from_another_cognitum_
product_cannot_reach_the_sensing_surface`: a correctly signed, unexpired,
right-issuer, right-typ token with client_id=meta-proxy and scope=inference is
rejected. Nothing about its signature or identity claims distinguishes it — only
scope does. A naive verifier accepts it, and an `inference` token becomes a key
to someone's home sensor.

No wiring into the sensing server yet; this crate is verification only, with no
login flow and no outbound Cognitum calls.

Co-Authored-By: Ruflo & AQE
2026-07-22 15:08:40 +02:00