screentinker/server/lib
ScreenTinker 252854d31e SSO: one OIDC flow for every provider, and verify the token properly
The OAuth support that was here could not work and would not have been safe if
it had.

It could not work: the login page called google.accounts.oauth2 and
new msal.PublicClientApplication, and NEITHER SDK WAS EVER LOADED by any page
in this app — no script tag, no dynamic import, nothing. Both buttons threw
ReferenceError on click. Even had they loaded, the CSP allows scripts only from
'self' and cloudflareinsights, and frames only from self and YouTube, so the
libraries and their popups were blocked too.

It would not have been safe: both endpoints authenticated with an ACCESS token
and neither checked who it was issued for. POST /auth/google fell back to
tokeninfo?access_token= and read the email out of the reply; POST
/auth/microsoft handed the bearer token to Graph /me and trusted that. Graph
and tokeninfo will both describe the user behind a token minted for SOMEBODY
ELSE'S application, so any site a user signed into that requested `email` or
`User.Read` could have replayed their token here and been issued a session as
them. Both endpoints are deleted; nothing is lost, because nothing could reach
them.

Replaced by ONE generic flow — Authorization Code + PKCE (S256), run
server-side, with the provider list resolved through a single function so
per-organization SSO can extend it later without a second login path. Google
and Microsoft become ordinary configured providers; Okta, Keycloak, Authentik,
Auth0 and anything else that speaks OIDC now work with three env vars.

Because the exchange happens server-side the browser never talks to the
provider, so there is no SDK to load, no client id in the page, and no
third-party origin needed in the CSP.

Identity comes from an ID token that must survive: signature against the
provider's JWKS (asymmetric algorithms only — alg:none and HMAC are refused
outright, the latter because the only key we hold is public), `iss` exactly as
discovered, `aud` and `azp` matching our client, `exp`, and a `nonce` this
server minted for that login. State is compared in constant time against a
value in an httpOnly SameSite=Lax cookie, so the callback is CSRF-protected and
survives a restart mid-login.

Account rules are the ones already in place: a verified email is required, an
SSO login never takes over an account that has a password, and a changed `sub`
for a known address is refused rather than handing the account to a recycled
mailbox.

18 new tests, every one describing something the old code would have accepted:
cross-audience tokens, azp mismatch, replayed nonces, alg:none, HMAC forgery,
wrong signing key, expired tokens, a discovery document lying about its issuer,
and a registry that never leaks a client id or secret to the browser.

Verified end to end against Google's real discovery document: the redirect
carries response_type=code, PKCE S256, state and nonce, and every callback
guard rejects as intended (no cookie, wrong state, no code, provider refusal,
unknown provider).

⚠️ TOTP is still not prompted on an SSO login, matching the documented
behaviour of the previous SSO and API-token paths. That is a product decision
and is left unchanged here rather than altered silently.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bvjey4FNam49MN7ybjcq6A
2026-08-10 17:19:28 -05:00
..
agency-layouts.js feat: agency zone-grant issuance UI + reactive placement card (#73) 2026-06-14 15:12:55 -05:00
agency-targets.js feat(agency): per-token upload folder — auto-created, subtree-confined (#158) (#171) 2026-07-12 21:23:25 -05:00
apk-cache.js Serve a beta APK alongside the stable one, and let a display move between them 2026-07-30 19:12:46 -05:00
apk-signature.js feat(device-owner): tier foundation + QR provisioning + content-expiry & device enhancements (#168) 2026-07-12 19:41:07 -05:00
app-settings.js feat(#146): always-on devices_connected + admin-toggleable /api/status debug block 2026-07-01 18:45:40 -05:00
billing-token.js feat(#146): owner-only CLI to mint billing:read tokens (scripts/mint-billing-token.js) 2026-07-01 21:31:11 -05:00
billing.js feat(#146): usage metering + admin-gated Billable Screens report (contract system-of-record) 2026-07-01 20:45:27 -05:00
bounded-snapshot-store.js fix(widgets): bound the unauthenticated telemetry store, and stop it writing rows 2026-07-26 10:36:09 -05:00
branding.js fix(security): patch quick-win findings from the codebase review 2026-06-08 19:02:19 -05:00
brightsign-package.js autorun.zip must be STORED and opened with roBrightPackage 2026-08-05 11:36:18 -05:00
brightsign-snapshot-queue.js Let a BrightSign host COLLECT its capture request over HTTP 2026-08-07 14:15:06 -05:00
brightsign-update.js Remote screenshots use the framebuffer, and an opted-in tester can move forward 2026-08-05 12:33:34 -05:00
chunked-prune.js fix(#146) A: non-blocking maintenance — chunked+yield+band-gate all sweeps 2026-06-30 20:55:05 -05:00
command-queue.js feat(socket): delivery queue for offline-device emits 2026-05-14 13:06:43 -05:00
content-ack-limiter.js fix(#146) E: log/write self-protection — coalesced logs, batched telemetry, bounded maps 2026-06-30 21:34:01 -05:00
content-ingest.js Probe video asynchronously — the sweep would have blocked the loop per file 2026-08-07 08:42:34 -05:00
device-identity.js fix(#146) P1.1: resolveIdentity short-circuits on device_id (zero-lookup hot path) 2026-06-30 21:57:55 -05:00
device-sanitize.js Scope device serialization to what each endpoint actually needs 2026-07-27 20:40:40 -05:00
device-settings.js Apply a saved device snapshot only inside the workspace it was taken in 2026-07-30 20:56:59 -05:00
device-timezone.js Store a schedule in the timezone its screen runs in 2026-07-28 09:43:46 -05:00
emailVerify.js feat(auth,tizen): TOTP 2FA UI, email verification on signup, Tizen SSSP install 2026-07-22 21:08:50 -05:00
flap-limiter.js fix(#148) Item 1: exempt paired+authenticated devices from the flap-limiter quarantine 2026-07-02 14:59:25 -05:00
ghcr-check.js feat(dashboard): version indicator + GHCR update check (#165) 2026-07-10 22:40:06 -05:00
image-gen.js feat(ai): generate background + foreground images for signs (#41 Phase 2) 2026-06-09 13:40:14 -05:00
incident-classify.js feat(diagnostics): device incident log — offline cause, network-vs-reboot, display-sleep (#175) 2026-07-13 11:26:04 -05:00
item-duration.js Default a video playlist item to the clip's own length (#237) 2026-08-06 09:36:53 -05:00
limiter-telemetry.js Record auth rate-limit rejections so they can be measured 2026-07-28 14:01:00 -05:00
liveness.js QA: close four ways a control or an asset lied about itself 2026-08-06 16:12:29 -05:00
log-coalescer.js fix(#146) P3.7: coalescer carries the PEAK numeric over the window 2026-06-30 22:10:45 -05:00
login-lockout.js feat(auth): bound password login per account, not only per IP 2026-07-26 14:07:16 -05:00
media-mute.js Mute reaches YouTube items — it never did, and failed opposite ways per player 2026-08-05 10:50:59 -05:00
media-orientation.js fix(content+android): rotation-aware media — portrait upright on dashboard AND player (#170) (#172) 2026-07-12 22:05:11 -05:00
media-tools.js Backfill missing thumbnails at boot, and say when ffmpeg is absent 2026-08-07 09:30:32 +01:00
numeric-code.js fix(devices): generate access-gating six-digit codes with a CSPRNG 2026-07-26 14:24:03 -05:00
oidc-providers.js SSO: one OIDC flow for every provider, and verify the token properly 2026-08-10 17:19:28 -05:00
oidc.js SSO: one OIDC flow for every provider, and verify the token properly 2026-08-10 17:19:28 -05:00
orientation-style.js Preview a rotated display the way people see it, not the way its framebuffer is 2026-08-06 09:38:31 -05:00
ota-breaker.js Serve a beta APK alongside the stable one, and let a display move between them 2026-07-30 19:12:46 -05:00
ota-download-guard.js feat(#146): /api/status.debug throughput counters (gauges -> gauges + work done) 2026-06-30 23:24:32 -05:00
pair-lockout.js fix(pairing): expire a pairing code on device liveness, not row age 2026-07-27 10:59:38 -05:00
parse-size.js Parse MAX_FILE_SIZE, and document what else caps an upload 2026-07-28 20:40:14 -05:00
passwordReset.js feat(auth): self-service password reset 2026-07-27 11:19:39 -05:00
permissions.js feat(roles): add cross-org platform_operator staff role (#13) 2026-06-05 10:30:21 -05:00
player-cache-policy.js Offline media on every player, and a revision so the cache can still be updated 2026-08-05 15:27:36 -05:00
player-capabilities.js A baseline moves when the fix reaches SCREENS, which is not one rule 2026-08-06 22:54:45 -05:00
player-media-health.js Export shared modules to the browser even when Node is in the page 2026-08-07 10:36:50 -05:00
reconnect-throttle.js fix(#146): reconnect/heartbeat storm containment (beta5) 2026-06-29 22:12:13 -05:00
recovery-grant.js fix(auth): back break-glass recovery with a revocable, auditable grant 2026-07-26 14:49:03 -05:00
rolling-counter.js feat(#146): /api/status.debug throughput counters (gauges -> gauges + work done) 2026-06-30 23:24:32 -05:00
safe-socket.js fix(#146): crash-hardening — one device's handler throw can't take down the fleet 2026-06-29 23:38:11 -05:00
schedule-eval.js Export shared modules to the browser even when Node is in the page 2026-08-07 10:36:50 -05:00
schema-check.js fix(db): observable migrations + fail-fast schema verification (#37) 2026-06-09 09:31:52 -05:00
secretbox.js feat(ai): AI content design in the Designer, BYO endpoint (#41 Phase 1) 2026-06-09 12:23:55 -05:00
session-settle.js fix(#148) patch2: per-device session-settle debounce — absorb duplicate-socket storms 2026-07-02 19:12:46 -05:00
settings-pin.js The settings PIN can be rotated and set from the dashboard 2026-08-05 13:44:15 -05:00
socket-rooms.js feat(socket): Phase 2.3 workspace-scoped dashboard socket rooms + per-command permission gates. Dashboard namespace was previously a flat broadcast - every connected dashboard received every device's status/screenshot/playback events platform-wide (foreign device names + IPs included). Inbound socket commands gated by a legacy admin/superadmin role check that was dead code post-Phase-1 rename. 2026-05-12 11:34:24 -05:00
ssrf-guard.js feat: transition engine — GL wipes across web, Tizen & Android (+ image↔video) (#204) 2026-07-20 16:45:32 -05:00
status-log-writer.js feat(diagnostics): device incident log — offline cause, network-vs-reboot, display-sleep (#175) 2026-07-13 11:26:04 -05:00
sync-backend.js Drop the user-agent fallback — it could never fire 2026-08-05 10:30:10 -05:00
tcp-keepalive.js fix(#148) Items 2-4: mark-offline closes the socket + tighten ping + TCP keepalive 2026-07-02 14:59:25 -05:00
tenancy.js refactor(auth): drop the unused optionalAuth middleware 2026-07-24 21:03:25 -05:00
tenant-cascade-migration.js fix(db): cascade tenant resources on workspace/org delete (#18 follow-up) 2026-06-08 16:01:52 -05:00
thumbnail-backfill.js Backfill missing thumbnails at boot, and say when ffmpeg is absent 2026-08-07 09:30:32 +01:00
totp-lockout.js feat(server): TOTP primitives - encrypted secret, hashed recovery codes, verify lockout (#100) 2026-06-13 20:48:55 -05:00
totp.js feat(auth,tizen): TOTP 2FA UI, email verification on signup, Tizen SSSP install 2026-07-22 21:08:50 -05:00
transition-bundle.js feat: transition engine — GL wipes across web, Tizen & Android (+ image↔video) (#204) 2026-07-20 16:45:32 -05:00
transition-config.js feat: transition engine — GL wipes across web, Tizen & Android (+ image↔video) (#204) 2026-07-20 16:45:32 -05:00
upload-sniff.js fix(uploads): derive stored type from file content, and never serve uploads as documents 2026-07-25 11:47:09 -05:00
user-deletion.js feat(#150): preserve per-device settings across delete+re-pair (fingerprint-keyed) 2026-07-07 12:40:47 -05:00
wall-geometry.js Describe a portrait video wall as portrait, and stop a wall hiding its screens 2026-08-06 09:46:31 -05:00
wgt-cache.js feat(auth,tizen): TOTP 2FA UI, email verification on signup, Tizen SSSP install 2026-07-22 21:08:50 -05:00
zone-validate.js fix: per-item mute round-trip + multi-zone orphan-zone fallback & warnings 2026-06-22 23:16:29 -05:00