In-park merchants discharge customers' parking: a merchant user scans the
ticket on their device (/validate; validation:create + program↔user binding)
and applies their program — comp / first-N-minutes free / amount-off (capped,
typed at scan) / percent. All money stays at the booth: the quote folds live
validations in a canonical order (timeCredit → percent → fixed → comp, net
floors at 0, Σ lines ≡ gross − net), the payment records gross/discount and
CONSUMES the validation ids (an overstay's fresh period never re-applies
them), the receipt prints the gross → lines → net story, and the Z/X-report
carries discountTotalMinor leakage. Every apply/void is a signed, attributed
ledger event (refId = append-only void); program config is /setup/site master
data (Bar/Lavazh checkboxes + right-column panel, tabs when both) whose saves
sign config_change. Migration 0024 + reset-db drift-guard entries; 8 route
integration tests + priceSession fold suite.
See wiki/concepts/validation-discounts.md for the full design record.
Claude-Session: https://claude.ai/code/session_01YYkpEsLmoQPaize5ec3oUm
park-buzi field observation: after a power cut the Hikvision cameras
reboot at the 1970 epoch (no/dead RTC battery, no NTP) and stay there
until a human logs into the web UI (which silently pushes the browser
clock) — corrupting the snapshot OSD timestamps (the evidence trail) and
ANPR push times meanwhile.
The host is the site's time authority (offline-first, no NTP infra):
- Device monitor triggers a sync at each camera's offline→ready edge —
exactly the power-restored moment — plus a 24h backstop; the attempt
is stamped before the async call so a failing camera retries at
backstop cadence, never every poll.
- HikvisionCamera.syncClock: GET /ISAPI/System/time; drift ≤60s → leave
alone; beyond (or unparseable = infinite drift) → PUT timeMode=manual
with the site wall-clock now WITH explicit utc offset
(localIsoWithOffset), echoing the camera's timeZone verbatim — correct
the clock, never fight its tz/DST config.
- Jumps >1h (the power-cut signature) log warn (persisted to app_logs);
small corrections info. Capability-guarded (isClockSyncable) —
hikvision only; dahua's CGI has no such endpoint.
- http-digest generalised to digestRequest (GET/PUT/POST + body); the
handshake was already method-aware. digestGet delegates unchanged.
8 new tests: in-sync no-op, 1970 PUT shape (manual + host instant +
echoed tz), unparseable→sync, failed-set surfaces, dahua non-capability,
DST-both-sides pins on the offset formatter.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Model the entry button (I1) and a Hikvision radar (I2) as named children of the
access controller, and drive the button's 12V lamp on a spare relay.
- Radar = the existing relays[].presenceInput one-car-one-ticket gate, now labelled
presenceKind: loop|radar. A radar may idle opposite the button, so add a per-input
active-level override: relays[].presenceActiveLow -> driver inputActiveLow set,
inverting just that terminal (pure helper inputActive()). The Dingtian has one
board-wide resting level otherwise.
- AuxOutputDevice.setAux(channel,on) capability on the device interface (Dingtian
latch) so business logic drives a NON-barrier lamp through the interface. Barriers
still only pulseOpen — barrier-not-a-door preserved.
- ButtonLightController: subscribes to the radar input edge + the camera lane status
and drives a 3-state lamp — radar+car=solid, radar-only=blink (~1Hz), else off.
Fails OFF on host loss/error; de-duped. A radar detection never opens a barrier on
its own (advisory; threat model).
- SetupWizard: presence kind + active-low + a button-light relay picker; sq+en i18n.
Tests: button-light.test.ts (truth table + blink + fail-OFF + de-dupe),
access-dingtian.test.ts (active-level inversion). Workspace build+lint+test green
(158 server tests). Wiki: hikvision-radar, button-light-indicator + updates.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Adds a bottom-of-modal "Test ANPR" button (shown only when a camera's
Plate recognition opt-in is checked) that captures a live snapshot off
the camera and runs it through the vision service, reporting the plate
read + confidence + elapsed time, or which stage failed.
- New POST /api/setup/test-anpr: builds the camera from the unsaved
config (no DB write/device change, like /test), captures a snapshot,
runs vision.analyze. Fail-soft like the runtime path (snapshot.ts):
camera/vision failures are reported results, never a 500.
- Thread the existing VisionClient into setupRoutes; add an isCamera()
type guard to @parking/devices.
- Web: testAnpr() client + AnprTestResult; button, hint, result line.
- i18n keys in sq + en (Catalog parity).
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
The advisory out-of-window slip for a subscriber had two problems:
1. Faulty character codes. It rendered via the generic text printReport,
which has no CP852 mapping for the em dash, ellipsis, or warning sign in
the composed strings — so they printed as "?" ("PARKIM ? JASHTE ORARIT").
Added ASCII transliterations for that typographic punctuation in the
ESC/POS encoder (— → -, ⚠ → !, … → ..., curly quotes/bullet), so they
degrade to a readable glyph instead of "?".
2. Not scannable. The slip printed only "Nr: SUBSESS-…" as plain text, so
the operator had to hand-key it. Gave the notice its own render function
(renderWindowChargeNotice) + a printWindowChargeNotice device method that
prints the occurrence id as a Code128 AND a QR — the same scan path as a
transient ticket, so the operator scans it straight into the booth pay
modal, which then quotes the combined window charge. Implemented on both
the rongta and cashino drivers.
Also fixed the booth pay modal: "Open barrier" no longer shows by default
for a subscriber. A prepaid subscriber with nothing owed sees only a small
"assist open" reveal (the audited manual open for a faulty reader / lost
card stays available, just not the default). A subscriber owing an
out-of-window charge is now two steps — take payment first, then "Open
barrier" appears — instead of an always-on open button.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
After a completed payment the customer always gets a transparency record:
entry time, payment time, duration parked, amount + tender. One shared
ESC/POS renderer (renderReceipt + ReceiptData in @parking/devices), two
modes: VOUCHER = those figures PLUS the scannable Code128 barcode and an
emphasised walk-back-grace line, so the one slip both proves payment and
self-exits at a distant exit reader (replaced the old barcode-only voucher);
STANDALONE = detail-only, auto-printed at payment when no voucher is issued.
Figures fold from the SIGNED ledger (latest payment event); printed on the
booth printer (failover to dispenser). Best-effort: a printer fault never
blocks the exit that already happened — the modal shows a note and offers
"Reprint receipt".
Server: booth-print.ts printPaymentReceipt() + receiptFigures(); routes
POST /api/voucher (voucher) + new POST /api/receipt (standalone/reprint).
Both ESC/POS drivers gained printReceipt(). Web: BoothPayModal auto-prints
after a non-voucher payment + reprint button; api.ts printReceipt().
CP852 fixes found on a real printout: (1) uppercase Ë was mapped to 0xEB
(that's ű) — correct byte is 0xD3; (2) Intl.NumberFormat injects a NO-BREAK
SPACE (U+00A0/U+202F) that isn't in CP852 and printed as "?" — line() now
normalises it to a plain space ("1000 Lekë"); (3) grace line wrapped
mid-word — split into two short lines.
Full build green; both receipt modes render-verified; routes live.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Builds out subscription credentials on top of the rename.
- Operator chooses the credential type; only QR is live (RFID shown disabled
"soon"). Backend/schema keep accepting both — re-enabling RFID is UI-only.
- QR codes are AUTO-GENERATED server-side (SUB-<base32>, crypto-random,
globally-unique-checked) — the customer/operator never picks the value.
RF stays operator-entered (the physical card id). Reader output decided =
TCP/IP full string (Wiegand-numeric fallback noted).
- Multi-month: form takes a `months` count → server sets validTo =
validFrom + N months (day-clamp); one record/one window; total = N×monthly.
- The QR card is PRINTED so the operator can hand it over: real ESC/POS 2D QR
(GS ( k) added to the Rongta driver (printSubscriptionCard); auto-print on
create (best-effort — never fails the create; returns {printed,printError})
+ reprint via POST /api/subscriptions/:id/print and a "Print code" button.
Verified via buildServer+inject incl. a TCP capture of the on-wire QR bytes
(autogen+uniqueness, Jan31+3mo→Apr30, auto-print, GS ( k QR with embedded
code, reprint, no-QR→409). Updated wiki (subscription, rongta-printer). No
migration.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
- site_config gains optional park identity (park_name, operator_name, nius,
address, phone, email); additive Drizzle migration 0001. GET/PUT
/api/site-config read/write the full config (PUT partial patch, admin only);
SiteSettings + SetupWizard expose the fields.
- renderTicket() prints an Albanian header sourced from site_config, the
all-numeric 13-digit ticket id (12 random + Luhn) as Code128, large digits,
and a lost-ticket footer. CP852 codepage so ë/ç render.
- Widen the Code128 module width 2->3 and height 80->100 dots so the
short-range "Simple" QR/barcode reader decodes reliably (was barely reading
at module width 2 on the 80mm head).
See wiki/concepts/site-metadata.md and ticket-encoding.md.
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.
A shift is two signed ledger events, no mutable table: new shift_open event
type + existing shift_z_report. The operator is the logged-in user (carried in
event identity); a shift is open iff their latest shift event is a shift_open.
ShiftService: close sums payment events in [start,end] by tender (cash/card, by
payment time), appends the signed shift_z_report (totals/counts/window), and
prints via a new generic PrinterDevice.printReport(title, lines) (Rongta ESC/POS
text) to a booth-receipt printer. Print is best-effort — a failed print does not
undo the signed close.
Routes (cashier/operator/admin): GET /api/shift/current, POST /api/shift/open
(409 if open), POST /api/shift/close (409 if none). Web ShiftControl in the
shell (non-readonly): Start/End + Z-report totals.
Verified: open -> double-open 409 -> payments (cash+card; one outside the window
excluded) -> close totals correct + signed + printed -> close-again 409 ->
re-open ok; readonly 403; verifyChain ok.
Replace the camera stub with HttpCamera: Hikvision ISAPI and Dahua CGI
snapshots over client-side HTTP Digest (new drivers/http-digest.ts).
healthCheck() now pulls a real frame instead of returning ready/stub.
Snapshot carries bytes (driver fetches); storage/imageRef is the caller's
job, keeping the adapter free of storage deps.
Fix the cosmetic Backend-push-IP field: add pushesToBackend to DeviceDriver
(only Dingtian sets it), expose as pushCapable in the catalog, and gate the
wizard's backend-IP fetch + field on it so pull-only devices hide it.
Verified on hardware (Hikvision 10.0.10.121): healthCheck ready,
captureSnapshot returns a valid JPEG.
The string protocol (UDP 60001) has no password field but can fire relays
("11" = relay 1 on), bypassing relay_pw entirely. Proven on hardware: an
unauthenticated packet opened a relay. harden() had left it enabled "for
status reads".
- #status() now reads via the authenticated binary command (relay cmd 0x00)
instead of the string protocol, so the string protocol is no longer needed.
- harden() disables the string protocol (udp2.p=255). BEST-EFFORT: firmware
V3.6J's config API silently refuses to disable udp2 (the device web UI can),
so it's not part of the blocking verify -- harden() re-checks and returns a
warning instead of throwing. After a web-UI disable, the attack is dead and
binary control/status still work (verified on hardware).
- HardenResult gains an optional `warnings[]`; the assign route surfaces them
to the admin and logs them.
- Corrected the false comment claiming relay_pw stops an attacker (it is
defence-in-depth on plaintext UDP, not a boundary).
- Thread localAddress through the driver's UDP/HTTP calls so a multi-homed
host sources device traffic from the device-facing NIC.
- Device web login (webUser/webPassword) is no longer redacted from setup
state -- it's an operational credential for the admin-only device area;
pushPassword/relayPassword stay machine-only.
Wiki: document the vuln + fix, the firmware caveat, and the out-of-band
actuation gap (the log captures host actions only; reconciliation vs. an
independent witness is the real control and is not yet built).
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.
Lock down the relay device for the flat (no-VLAN) network.
Relay control:
- pulseOpen/setRelay now use the Dingtian BINARY protocol (:60000) with a
relay password — the only relay option with auth (string :60001 has none, and
is kept only for the read-only status query). Frame verified on hardware.
HardenableDevice capability (driver harden()):
- set a random relay_pw (1-9999); disable unused channels (rs485/can/tcp x2/mqtt
-> p:255), keeping UDP1 binary (control) + UDP2 string (status).
- write-verified (device reboots on apply).
Assign/Save flow now does: fix preconditions -> harden -> set up input push;
the relay password is stored in lane_devices so the runtime device can command
the relay.
DELIBERATELY NOT touching the device's HTTP CGI session check (session_en):
enabling it on this firmware breaks the config-READ API (ECONNRESET) and locked
the backend out — required a factory reset to recover. The open CGI API is
accepted as flat-network reality; the signed event log is the real guarantee.
Verified end to end on hardware: assign hardens + configures the device, config
API stays reachable, pulseOpen with the stored password fires the relay, without
it is rejected. wiki: device-input-flow + dingtian-relay updated.
Secure the device→backend input push, and configure it automatically when the
admin assigns the device (no manual URL/secret entry).
Auth — HTTP Digest (chosen by hardware testing: the device can't push to a
self-signed HTTPS backend, but does Digest correctly; a URL token is sniffable/
logged):
- digest-auth.ts: MD5 qop=auth challenge/verify, single-use nonces (replay
resistance). Password never crosses the wire.
- push route: Digest + source-IP allowlist; per-device pushUser/pushPassword from
lane_devices. Still not behind the SPA cookie/CSRF auth (machine call). The
signed event log remains the real anti-fraud guarantee.
Auto-config on assign:
- setup assign: for push-capable devices, generate Digest creds, call
configureInputPush to write them + the push URLs to the device, store the creds
(password not echoed back). net.ts derives the backend IP on the device's
subnet (BACKEND_HOST_IP override).
- driver configureInputPush sets auth=2 + creds; PushConfig carries the creds.
- removed the earlier URL-token approach.
Two hard-won device-write bugs fixed in the driver:
- configApi now sets an explicit Content-Length — the device silently ignores
chunked request bodies (Node's default without Content-Length), so every config
write looked successful ({"status":0}) but did nothing. This was the root cause
of the session's "writes don't apply" mystery.
- #writeConfig polls until the change is verified, retrying (the device reboots on
apply; back-to-back writes were lost). The `pass` field caps at 31 chars, so the
generated password is 24 hex chars.
Verified on hardware: assign auto-configures the device; all 4 inputs then push
with Digest auth, zero failures. wiki/device-input-flow updated.
Neither UHPPOTE nor ZKTeco is used — the Dingtian relay controller was chosen
and verified. Remove their code and re-scope the wiki.
Code:
- delete access-uhppote.ts, uhppoted.d.ts, access.ts (zkteco/esp32-relay stubs),
and the three uhppote-*.mjs hardware test scripts.
- remove the `uhppoted` npm dependency from @parking/devices and @parking/server.
- unregister uhppote/zkteco/esp32-relay from the driver registry; drop their
exports. Catalog access drivers = dingtian only. Build green (5/5).
- refresh now-stale example comments (registry/interfaces/setup/api) to use
current examples; keep the two "UHPPOTE blocker" references that explain why
the precondition capability exists.
Wiki (kept pages, re-scoped):
- uhppote-controller, zkteco-controller -> rejected/historical with callouts;
uhppote-vs-esp32 -> historical (detection-vs-prevention lens still useful).
- re-point all "current device" framing (standing-decisions, bom, overview,
open-questions, device-registry, device-discovery, index) to dingtian-relay.
- transferable concepts (network-isolation, event-log-ingestion, barrier-not-a-
door, threat-model) untouched. Raw source immutable. Links lint clean.
The Dingtian board's inputs are independent of its relays (configurable), so a
button on an input can report to the host WITHOUT auto-firing a relay — solving
the access-controller-button-flow blocker the UHPPOTE/ZKTeco couldn't.
packages/devices:
- access-dingtian.ts: `dingtian` access driver implementing AccessControlDevice
(relay pulse/latch via UDP string protocol :60001), InputDevice (read inputs +
poll-based press/release events, active-LOW), and the new PreconditionDevice.
- PreconditionDevice capability on the interface: a device can report config it
requires for parking and optionally fix it. Dingtian checks input_link_relay
via the HTTP config API and can disable it.
- httpPort config field — the web/config API port is separate from UDP control
(this unit uses 8080, not the default 80).
- Register dingtian; export driver objects from the package.
Verified on real hardware (DT-R004 @ 10.0.10.172): status read, relay pulse,
input events; disabled input_link_relay via the driver, then confirmed pressing
inputs fires NO relay (0000) — host-in-the-loop entry works.
Config-write gotcha recorded: config_set.cgi requires "command":"setconfig"
injected after "status" (GET omits it) or the POST silently no-ops.
apps/server/scripts/dingtian-test.mjs: status / watch / pulse hardware test.
wiki: dingtian-relay verified; button-flow marked RESOLVED; index + log.
Make the device-adapter pattern selectable so the admin chooses hardware at
install — per lane, from a catalog of supported drivers. Adding a device =
registering one more driver; no business-logic change.
packages/devices:
- interfaces.ts: AccessControlDevice / ReaderDevice / CameraDevice / PrinterDevice
(adds CameraDevice for entry/exit snapshot-on-event; access relay stays
intent-only per "a barrier is not a door").
- registry.ts: driver catalog with per-driver config fields + factory, config
validation, and a catalog payload for the setup UI.
- drivers/: stub adapters — access (zkteco, esp32-relay), reader (wiegand,
tcp-ip), camera (hikvision, dahua). Real vendor protocols TBD.
packages/db:
- lane_devices + setup_state tables (migration 0001); re-export query helpers.
apps/server:
- routes/setup.ts: GET /api/setup/catalog (public schema), and admin-only
/assign, /state, /complete with registry validation before persisting.
- extract auth.ts (requireJwtSecret, requireRole, JWT type aug).
apps/web:
- SetupWizard scaffold + api client: pick a driver per category for a lane,
render its config fields.
wiki: device-registry + first-run-setup concept pages; cross-link from
device-adapter-pattern; index + log updated.
Verified: full turbo build (5/5); catalog lists all drivers; admin assign
persists; missing-config and no-token requests are rejected.
julian