Two reader-hardening changes born from the park-buzi phantom-scan investigation
(empty pre-opening site, exit reader pushing sun-decoded garbage codes).
1. CHANNEL TAGGING — closes the printed-card-clone hole. The DT-008 push is
channel-blind (one opaque cardid from either engine) and SubscriptionFlow
matched by value only, so printing an RF card's UID (often written on the
card face, e.g. 86A158) as a barcode cloned the card. Now:
- Vendor tool sets output prefixes (QRCode "Q:", Card "K:"; server env
overrides READER_QR_PREFIX / READER_CARD_PREFIX).
- routes/qr-reader.ts strips the prefix and tags the read's confirmed
channel (DeviceReadEvent.channel optical|rf; kind qr|card). Enrollment
capture stores the BARE value. READ log lines carry ch=… (permanent
phantom attribution).
- SubscriptionFlow.match requires channel agreement: an optical decode may
not claim an rf credential (and vice versa) — refused + signed
sub.refused.channelMismatch anomaly (a clone attempt is a fraud signal).
- Unprefixed reads keep the legacy untagged shape and match as before, so
enforcement only bites where prefixes are deployed. Deploy server FIRST,
then set prefixes in the vendor tool.
2. STRUCTURAL FILTER — phantom decodes out of the signed feed (operator-
requested, reverses the earlier "record every probe" position — red
"who is exiting?" rows for NOBODY train the operator to ignore the feed).
read-dispatch.ts drops a no-match reader value that cannot possibly be a
credential we issue (no ticket Luhn shape, no SUB-/SUBSESS- prefix, not
confirmed-RF, not a plate) to UNSIGNED device_events telemetry
(unrecognizedRead:true). Deliberately WIDE plausibility: forged ticket
shapes, unknown physical cards, unknown SUB- codes all still sign the
normal refusal anomaly; enrolled credentials match before the filter and
can never be hidden. Works for legacy unprefixed reads too — the feed
cleans up on deploy, before any vendor-tool change.
Wiki: dingtian-dt008-reader.md records the clone hole + fix, the filter (as a
recorded position reversal), and the two device-side settings now part of the
credential contract (output prefixes + Card Input format, moving 6H→8H at the
next vendor-tool session; both live ON the device — re-apply after any
factory reset/swap).
Tests: qr-reader-channel.test.ts (prefix split, route tagging, bare-value
capture), subscription-channel.test.ts (channel agreement matrix + anomaly),
read-dispatch-filter.test.ts (filter boundary: phantoms dropped, probes kept,
enrolled never hidden). Suite 278 green.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
An early wrong assumption named the QR/RFID access reader "GEE" /
"GEE/Fondvision" / "GEE-QR-ER80" (and summarized a raw GEE PDF as its
datasheet). There is no GEE device — it's the Dingtian DT-008
(dingtian-tech.com/en_us/qr_code_reader.html), the same vendor as the relay
board, which is why it integrates the identical HTTP-GET-push way.
Code:
- Driver symbol geeQrReaderDriver → dingtianQrReaderDriver; label →
"Dingtian DT-008 QR/RFID reader (HTTP push)"; comments/description rewritten
to the real DT-008 facts (Wiegand 26/34, TCP/IP, USB, RS485 — not RS-232;
QR/barcode + ID/IC/NFC — not DataMatrix/1D).
- Persisted driverId "gee-qr-reader" → "dingtian-qr-reader" (the registry
lookup key + the row created on assign in qr-reader.ts).
- Migration 0015 rewrites existing devices.driver_id rows so configured readers
keep resolving (applied to the dev DB — 2 rows; the booth applies it on boot).
Behaviour is unchanged: naming + the persisted id only.
Wiki + memory:
- Renamed entities/gee-qr-er80.md → dingtian-dt008-reader.md and
sources/gee-qr-er80.md → dingtian-dt008.md; rewrote both to the real DT-008
product-page specs while KEEPING all the verified-on-hardware protocol facts
(cjihao serial, .jsp path, Connection: close). Fixed every cross-reference +
"GEE" mention in 6 other pages. Memory gee-reader-serial-binding →
dingtian-reader-serial-binding. The only surviving "GEE" mentions are
deliberate naming-correction notes, the raw PDF filename, and the
append-only log history.
Full workspace build/lint/test green; dev DB readers verified resolving to the
registered dingtian-qr-reader driver.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Two booth feed fixes:
- Plate not showing until refresh. Plate recognition is async/advisory
(snapshot.ts recognizePlate → a kind:"read" device_event keyed by the session
identity), so it lands AFTER the entry/exit event already shipped over the WS
without a plate; a refresh re-fetched via the bulk enrich path and showed it.
Added a `plate-recognized` bus event (device-events.ts) emitted when the read
is written; ws.ts forwards it; the client patchPlate(identity, plate)
(live-store) backfills the already-rendered feed row in place and invalidates
the Query-owned active-sessions list. No refresh.
- Plate search didn't filter. Both the live-feed (BoothScreen) and active-sessions
(ActiveSessions) search haystacks matched the wrong field — the displayed plate
is the ENRICHED top-level e.plate/s.plate (set by enrichEvent), not payload.plate
(the plate is unsigned, never in the signed payload). Switched the haystacks to
the displayed field.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
The on-screen Hyrje/Dalje barrier lights were 2-state (green=free / red=busy)
off the camera lane-status only — they couldn't show the radar-only "detected,
not yet confirmed" state that makes the physical button lamp (relay 3) blink.
Now they mirror the lamp's 3-state rule per lane:
radar present + camera not busy → BLINK green↔red (~1 Hz)
camera busy → SOLID red
otherwise → SOLID green
End-to-end:
- LanePresence (lane-presence.ts): subscribes to deviceEvents.onInput, resolves
each presence edge to its lane via the new direction-agnostic presenceLaneOf()
(device-resolve.ts) — entry AND exit, unlike the entry-gated relayForPresence
the one-car-one-ticket gate uses — and emits a lane-presence {entry,exit} bus
event on change. Wired in server.ts (start + onClose).
- WS forwards it (hello snapshot + push) into live-store.radar.
- BarrierLight (BoothScreen.tsx) is now 3-state; blinks via the .lane-blink
keyframe (index.css), which holds solid-red under prefers-reduced-motion.
Same input + same rule as the lamp, so the screen and the post never disagree.
A new test (lane-presence.test.ts) caught a real bug: the first cut reused
relayForPresence, so the EXIT lane never resolved (it's entry-gated) and never
blinked — presenceLaneOf fixes it. Covers entry/exit independence, de-dupe
across several radars on one lane, and ignoring non-presence inputs.
Full workspace build/lint/test green (185 server tests). Updated the
button-light-indicator wiki page ("On-screen twin").
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
A Hikvision vehicle detection (eventType=VMD, targetType=vehicle) on a
camera bound to entry/exit now marks that lane "busy" and shows it as a
barrier light beside the scan input on the booth (green=free, red=busy).
Advisory only — it gates nothing (never blocks a ticket or opens a barrier).
- Parse eventState (active/inactive) from the Hik payload.
- LaneStatus tracker: a vehicle `active` event marks the camera's bound lane
busy + arms an auto-clear timer. This camera class sends no leave/`inactive`
signal, so "free" is timeout-driven (LANE_BUSY_TTL_MS, default 90s; the
camera re-fires `active` while a car sits there, refreshing the timer). A
"both"-direction camera marks both lanes.
- Push lane-status over the existing booth WS (+ in the hello snapshot);
live-store holds { entry, exit }; two BarrierLight icons render it.
- i18n booth.laneEntry/laneExit (sq + en).
Tests: lane-status.test.ts (7 — busy/free, TTL auto-clear, timer re-arm,
no re-emit while busy, both/exit direction, unknown device). server 120/120;
web + server build/lint green.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Make the vision service genuinely configurable (was env-only).
- SetupWizard: an "ANPR" checkbox on the camera form (writes config.anpr; persisted
only when on; sq+en) — opt-in is no longer raw JSON.
- DeviceMonitor optionally takes the VisionClient and probes /health each tick, emitting
a "vision" pseudo-device → a Vision chip (ready/degraded/offline + recognizer) in the
booth footer when VISION_ENABLED, no chip when off. Widened the DeviceStatus category
union (server + web) + footer maps + devices.catVision. Verified: ready/fast_alpr when
up, 0 chips when disabled.
- apps/vision/.env.example (Python service) + a VISION_* block in apps/server/.env.example
(Node side) + a Configuration section in opencv-anpr-service.md covering all four
layers and the caveats: the two processes share the VISION_ prefix but need SEPARATE
.env files; bind /analyze to 127.0.0.1; cache model weights at deploy; an unbound anpr
camera recognizes but every read is refused.
Build + lint green.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Generalise printer-only monitoring to every configured device. New
DeviceMonitor polls all enabled devices each tick (default 8s): printers
via rich readStatus(), relays/readers/cameras via the generic healthCheck()
reachability probe, flattened to one traffic-light (ready/degraded/offline)
+ detail, deduped (emit on change only), fail-toward-offline.
- device-status bus event + GET /api/devices/status snapshot.
- Pushed over the existing /api/ws (hello carries the initial set;
device-status frame per change).
- Web: live-store devices map, WS handler, DeviceFooter chip-per-device
(role label not vendor; click a degraded/offline chip for an issues panel).
Verified roleKind resolution + change-only emit on a fresh DB.
Note: the footer's UI surface (api type, router mount, i18n devices) rides
in the subsequent subscription commit due to shared-file overlap.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Add @fastify/websocket. EventLog fires an onAppended callback after each durable
append; device-events gains a ledger channel (emitLedger). /api/ws fans out
ledger + occupancy + printer-status to authenticated booth clients. Origin
allowlist (WS_ALLOWED_ORIGINS) replaces CSRF for the handshake (anti-CSWSH).
Note: server.ts also reflects later booth route wiring; the final HEAD builds.
A parking lot is one pool of spaces with a flexible set of entry/exit
points — no "lane". Direction is a property of each RELAY inside an access
controller; readers/cameras bind to a controller relay and inherit it.
Schema:
- drop `lane` from ledger_events, device_events, sessions
- rename lane_devices -> devices (no lane/direction columns)
- access config.relays=[{relay,direction,button?}]; reader/camera
config.controllerId+relay binding
- fresh 0000_baseline migration (history reset; dev data was throwaway)
Signed ledger:
- remove `lane` from canonicalize(); bump signer keyId sw-hmac-v1 -> v2
(v1 events won't verify under v2 — intentional, gated per-event by keyId)
Server:
- new device-resolve.ts (replaces lane-map.ts): relayForButton,
relayForDevice, firstRelayByDirection, devicesByDirection
- entry-flow: button terminal -> its relay; exit/permit: reader's bound
relay; dispatcher resolves the bound relay + inherited direction
- camera snapshots fire by direction site-wide, async, never block open
- DeviceConfig widened to nested JSON for relays[]
Web:
- wizard: no lane selector; add controllers (relay map + entry-button
terminal) first, then bind readers/cameras/printers to a controller relay
Wiki: new entry-exit-points.md (replaces lane-direction); reworked
entry-exit-readers, parking-session, first-run-setup, device-registry,
append-only-event-chain, device-events; removed stale lane/LaneMap mentions.
The reader HTTP-GETs on each scan and beeps/acts on our JSON reply (host-in-the-
loop, synchronous). New route GET/POST /qa/mcardsea.php parses the SDK query,
runs the scan through the read dispatcher (permit match -> permit flow; else
transient exit), and replies the SDK verdict: status 1=valid (beep 2x) /
0=invalid (beep 1x), output, time-sync.
Refactored the read flows to return a ReadOutcome {accepted, direction, reason}
so the reply reflects the real accept/reject decision (ReadDispatcher.dispatch,
ExitFlow.handleAt, PermitFlow.run). Fire-and-forget readers ignore it.
Reader's lane is keyed off its serial (cjihao) as lane_devices.id for now;
endpoint is public (reader has no auth, on the device subnet).
Verified via inject: valid permit QR -> status:1 + open; re-scan -> permit exit;
unknown QR -> status:0; barrier-less lane -> status:0.
A credential read at an exit lane validates the session, then opens. Adds a
'read' channel to the device bus (DeviceReadEvent: ticket/plate/qr/card);
entry stays button-driven so reads are exit/identity events.
Flow: read -> fold the SIGNED ledger for that identity -> validate open + PAID
+ within gracePeriodExitMin -> signed vehicle_exit -> pulseOpen -> close the
session cache. Unpaid / grace-expired / unknown -> signed anomaly, barrier
stays closed (a deliberate business reject, not a fail-state; 'exit fails open'
is about host/power loss). Validation reads the ledger (authoritative), not the
cache.
No payment events exist until the pay station is built, so every transient exit
currently rejects -- the correct end-state, not yet passable. Verified against
stubs: unpaid->anomaly+no-open; paid+grace->exit+open+closed; expired->anomaly;
unknown->anomaly; verifyChain ok across entry->pay->exit.
Flagged: lane_devices has no entry/exit direction model (exit door hardcoded to
1); needs a lane-direction/role model before multi-reader lanes.
Add the rongta PrinterDevice driver (ESC/POS over raw TCP 9100) and the
device-agnostic pieces around it:
- Roles + failover: each printer declares a role (entry-dispenser/booth-
receipt) and failoverRank; printer-routing.ts picks the best healthy printer
and falls back outside->booth for entry tickets (never the reverse).
- Live status: MonitorableDevice.readStatus()/PrinterStatus capability. The
Rongta driver scrapes the device's own /prn_stat.htm (Cover/Cutter/Paper
End/Near End/Off-Line) rather than hand-decoding DLE EOT, whose reply bytes
on this clone don't match the canonical ESC/POS bit layout (verified on
hardware) -- avoids a false-healthy. Maps to ready/degraded/offline, fail
safe on an unreachable or unexpected page.
- Server PrinterMonitor polls enabled printers (PRINTER_POLL_MS, default 5s),
caches latest, emits "printer-status" on change. Exposed via
GET /api/printers/status and an SSE stream for the booth UI.
Verified against 10.0.10.6: ready when healthy, offline when unreachable
(no throw), bus emits on change and suppresses unchanged reads.
Wiki: new rongta-printer entity, printer-roles-failover and
printer-status-monitoring concepts; BOM/index/log updated.
The device pushes button events to the backend via its Input Link URL feature;
the backend decides. No polling — the chosen entry architecture.
packages/devices:
- dingtian driver: configureInputPush() writes the device's input_link_url
config (per-input server/port/path, en=1, active-LOW, plain HTTP) so each
input HTTP-GETs the backend on press/release. Extracted #readConfig/#writeConfig
(with the required command:setconfig injection + post-write reset tolerance).
apps/server:
- routes/devices.ts: public GET/POST
/api/devices/dingtian/:deviceId/input/:n/{on,off} — translates a device push
into an internal device event. Not behind cookie/CSRF (machine call from the
device); trust comes from the signed event log, not this request.
- device-events.ts: internal EventEmitter bus so the entry flow subscribes to
input events without coupling to HTTP. Wired into the server.
Verified on hardware: configured the device, then real presses on all 4 inputs
pushed to the backend (input N on+off, source = device IP). No polling.
wiki: device-input-flow concept (path + trust model for the flat/no-VLAN
network); dingtian-relay updated; index + log.
julian