julian
1b55e2034d
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.
80 lines
4.7 KiB
Markdown
80 lines
4.7 KiB
Markdown
---
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type: overview
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tags: [parking, index]
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updated: 2026-06-14
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---
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# Index
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Content catalog for the wiki. Start at [[overview]]. Maintained on every ingest.
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Counts: 1 source · 14 entities · 10 concepts · 2 decision records.
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## Overview & navigation
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- [[overview]] — the top-level synthesis and entry point.
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- [[index]] — this catalog.
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- `log.md` — chronological record of ingests/queries/lints.
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## Sources
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- [[parking-system-architecture]] — design notes: stack, threat model, devices, UHPPOTE, ESP32, readers, BOM, open decisions.
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## Entities — technology stack
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- [[technology-stack]] — the full stack table; all MIT/Apache/BSD, chosen to avoid lock-in.
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- [[fastify]] — Node backend; hosts device-driver plugins + auth; serves the SPA.
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- [[sqlite]] — local single-writer DB (WAL); limits & why it fits.
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- [[drizzle-orm]] — ORM; schemas port to PostgreSQL for remote sync.
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- [[turborepo]] — monorepo tool.
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- [[react-vite-spa]] — React/Vite frontend served by Fastify.
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- [[local-jwt-auth]] — fully local auth (JWT + bcrypt + role guard); forced by offline-first.
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## Entities — rejected alternatives
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- [[payload-cms]] — strong, but rejected over BSL license shift (the rug-pull cautionary case).
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- [[refine]] — dropped for plain React; UI too simple to justify a framework.
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- [[logto-zitadel-oidc]] — OIDC providers ruled out by offline-first.
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## Entities — hardware & devices
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- [[uhppote-controller]] — current access controller; cheap, tamper-evident, open-UDP, fixed firmware.
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- [[esp32-custom-controller]] — prevention-grade upgrade; device-level auth.
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- [[atecc608]] — secure element; non-extractable signing key (host events + controller auth).
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- [[wiegand]] — reader standard feeding the controller directly (autonomous permit-holder path).
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- [[lpr-camera]] — edge-AI plate recognition; host-side casual-identity source.
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- [[zkteco-controller]] — C3/inBio controller; aux-input path may enable host-in-the-loop (driver TBD).
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- [[dingtian-relay]] — relay+input board; inputs decoupled from relays → solves the button blocker (driver TBD).
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- [[bom]] — reference bill of materials (barrier, loops, controller, readers, payment, host, network).
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## Concepts — foundational forces
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- [[offline-first]] — no network dependency in core operation; what it forces (and doesn't).
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- [[threat-model]] — the operator-at-the-booth reframing; why encryption defends the wrong threat.
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## Concepts — integrity & anti-fraud
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- [[append-only-event-chain]] — append-only + hash chain + ATECC608 signing = unforgeable log.
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- [[reconciliation]] — the real anti-fraud control; what remote sync actually is.
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- [[disk-os-hardening]] — LUKS/GRUB/Secure Boot; worthwhile but not the main event.
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## Concepts — device architecture & safety
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- [[device-adapter-pattern]] — business logic talks to interfaces; swap hardware → new adapter.
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- [[device-registry]] — catalog of selectable drivers per category (admin-configurable).
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- [[first-run-setup]] — admin assigns devices per lane from the catalog at install.
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- [[device-discovery]] — optional driver capability to scan the LAN (UHPPOTE UDP broadcast).
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- [[barrier-not-a-door]] — never timed-close a barrier; safety lives in barrier firmware.
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- [[trust-boundary]] — the core fork: network vs. device; auditable vs. unforgeable.
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- [[fail-state-safety]] — entry fails closed, exit fails open; manual override; watchdog.
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## Concepts — access control
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- [[uhppote-udp-protocol]] — open UDP weakness + the unauthenticated commands that undermine the log.
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- [[network-isolation]] — mandatory VLAN isolation; the network as security boundary.
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- [[event-log-ingestion]] — host-side index tracking that makes the UHPPOTE log trustworthy.
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- [[challenge-response-auth]] — asymmetric nonce scheme for the ESP32 (auth + anti-replay).
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- [[entry-exit-readers]] — two populations, two integration paths; both can share a relay.
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- [[uhppote-vs-esp32]] — comparison: detection vs. prevention.
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## Dev environment (reference)
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- [[local-dev-workflow]] — running the stack locally; setup, the dev-hang gotchas, seed:admin.
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- [[wsl-dev-networking]] — WSL2 NAT blocks device broadcast; use mirrored mode + the gotchas after.
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## Decisions
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- [[standing-decisions]] — settled decisions (stack, platform, integrity, access control, readers).
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- [[open-questions]] — 7 open items (6 procurement + JWT key choice); ESP32 device auth deferred.
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- [[access-controller-button-flow]] — ✅ RESOLVED: Dingtian decoupled inputs enable ticket-first entry (was a UHPPOTE/ZKTeco blocker).
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- [[autonomous-direction]] — roadmap: toward fully unmanned (no booth); reshapes threat model + fail-state.
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- [[dingtian-vs-mqtt]] — transport choice: direct HTTP/UDP now, MQTT parked until multi-lane scale.
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