Kpa-clawbot 3290ff1ed5 fix(channels): auto-decrypt PSK channels on WebSocket live feed (#1029) (#1030)
Closes #1029.

## Problem

PSK-decrypted channels show new messages only after a full page refresh.
The WebSocket live feed delivers `GRP_TXT` packets as encrypted blobs
and the channel UI has no hook to auto-decrypt them with stored keys.
The REST fetch path (used on initial load + on `selectChannel`) already
decrypts; the WS path silently dropped on the floor.

## Fix

Two new helpers in `public/channel-decrypt.js`:

- `buildKeyMap()` → `Map<channelHashByte, { channelName, keyBytes,
keyHex }>`
  built from `getStoredKeys()`. Cached and invalidated on `saveKey` /
  `removeKey`, so the WS hot path is O(1) per packet after the first
  build.
- `tryDecryptLive(payload, keyMap)` → returns
`{ sender, text, channelName, channelHashByte }` when the payload is an
  encrypted `GRP_TXT` whose channel hash matches a stored key and whose
  MAC verifies; `null` otherwise.

`public/channels.js` wraps `debouncedOnWS` with an async pre-pass
(`decryptLivePSKBatch`) that:

1. Skips the work entirely when no encrypted `GRP_TXT` is in the batch
   or no PSK keys are stored.
2. For each match, rewrites `payload.channel`, `payload.sender`, and
   `payload.text` so the existing `processWSBatch` consumes the packet
   exactly the same way it consumes a server-decrypted `CHAN`.
3. Bumps a per-channel `unread` counter for any decrypted message
   whose channel is not currently selected. The badge renders in the
   sidebar (`.ch-unread-badge`) and resets on `selectChannel`.

`processWSBatch` itself is untouched, so the existing channel-view
behavior, dedup-by-packet-hash, region filtering, and timestamp ticker
all continue to work as before.

## TDD

- **Red** (`2e1ff05`): `test-channel-live-decrypt.js` asserts the new
  helpers + the channels.js integration contract. With stub
  `buildKeyMap`/`tryDecryptLive` returning empty/null, the test compiles
  and runs to completion with **8/14 assertion failures** (no crashes,
  no missing-symbol errors).
- **Green** (`1783658`): real implementation lands; **14/14 pass**.

## Verification (Rule 18)

- `node test-channel-live-decrypt.js` → 14/14 pass
- All other channel tests still pass:
  - `test-channel-decrypt-ecb.js` 7/7
  - `test-channel-decrypt-insecure-context.js` 8/8
  - `test-channel-decrypt-m345.js` 24/24
  - `test-channel-psk-ux.js` 19/19
- `cd cmd/server && go build ./...` clean
- Booted the server against the fixture DB and curled
  `/channel-decrypt.js`, `/channels.js`, `/style.css` — all three serve
  the new code with the auto-injected `__BUST__` cache buster.

## Performance

The WS pre-pass is gated by a quick scan: zero-cost when no encrypted
`GRP_TXT` is present in the batch. When PSK keys exist, the key map is
cached (sig-keyed on the stored-keys snapshot) so `crypto.subtle.digest`
runs once per stored key per change, not per packet. Each match costs
one MAC verify + one ECB decrypt — the same work
`fetchAndDecryptChannel`
already does, just amortized over time instead of in a single batch.

## Out of scope

- Decoupling the badge from the live feed (server should ideally tag
  packets with `decryptionStatus` before broadcast). Tracked separately.
- Persisting the `unread` counter across reloads (currently in-memory).

---------

Co-authored-by: clawbot <bot@corescope.local>
2026-05-04 04:56:43 +00:00
2026-04-05 06:36:03 +00:00
2026-03-20 05:38:23 +00:00

CoreScope

Go Server Coverage Go Ingestor Coverage E2E Tests Frontend Coverage Deploy

High-performance mesh network analyzer powered by Go. Sub-millisecond packet queries, ~300 MB memory for 56K+ packets, real-time WebSocket broadcast, full channel decryption.

Self-hosted, open-source MeshCore packet analyzer. Collects MeshCore packets via MQTT, decodes them in real time, and presents a full web UI with live packet feed, interactive maps, channel chat, packet tracing, and per-node analytics.

Performance

The Go backend serves all 40+ API endpoints from an in-memory packet store with 5 indexes (hash, txID, obsID, observer, node). SQLite is for persistence only — reads never touch disk.

Metric Value
Packet queries < 1 ms (in-memory)
All API endpoints < 100 ms
Memory (56K packets) ~300 MB (vs 1.3 GB on Node.js)
WebSocket broadcast Real-time to all connected browsers
Channel decryption AES-128-ECB with rainbow table

See PERFORMANCE.md for full benchmarks.

Features

📡 Live Trace Map

Real-time animated map with packet route visualization, VCR-style playback controls, and a retro LCD clock. Replay the last 24 hours of mesh activity, scrub through the timeline, or watch packets flow live at up to 4× speed.

Live VCR playback — watch packets flow across the Bay Area mesh

📦 Packet Feed

Filterable real-time packet stream with byte-level breakdown, Excel-like resizable columns, and a detail pane. Toggle "My Nodes" to focus on your mesh.

Packets view

🗺️ Network Overview

At-a-glance mesh stats — node counts, packet volume, observer coverage.

Network overview

📊 Node Analytics

Per-node deep dive with interactive charts: activity timeline, packet type breakdown, SNR distribution, hop count analysis, peer network graph, and hourly heatmap.

Node analytics

💬 Channel Chat

Decoded group messages with sender names, @mentions, timestamps — like reading a Discord channel for your mesh.

Channels

📱 Mobile Ready

Full experience on your phone — proper touch controls, iOS safe area support, and a compact VCR bar.

Live view on iOS

And More

  • 11 Analytics Tabs — RF, topology, channels, hash stats, distance, route patterns, and more
  • Node Directory — searchable list with role tabs, detail panel, QR codes, advert timeline
  • Packet Tracing — follow individual packets across observers with SNR/RSSI timeline
  • Observer Status — health monitoring, packet counts, uptime, per-observer analytics
  • Hash Collision Matrix — detect address collisions across the mesh
  • Channel Key Auto-Derivation — hashtag channels (#channel) keys derived via SHA256
  • Multi-Broker MQTT — connect to multiple brokers with per-source IATA filtering
  • Dark / Light Mode — auto-detects system preference, map tiles swap too
  • Theme Customizer — design your theme in-browser, export as theme.json
  • Global Search — search packets, nodes, and channels (Ctrl+K)
  • Shareable URLs — deep links to packets, channels, and observer detail pages
  • Protobuf API Contract — typed API definitions in proto/
  • Accessible — ARIA patterns, keyboard navigation, screen reader support

Quick Start

No build step required — just run:

docker run -d --name corescope \
  --restart=unless-stopped \
  -p 80:80 -p 1883:1883 \
  -v /your/data:/app/data \
  ghcr.io/kpa-clawbot/corescope:latest

Open http://localhost — done. No config file needed; CoreScope starts with sensible defaults.

For HTTPS with a custom domain, add -p 443:443 and mount your Caddyfile:

docker run -d --name corescope \
  --restart=unless-stopped \
  -p 80:80 -p 443:443 -p 1883:1883 \
  -v /your/data:/app/data \
  -v /your/Caddyfile:/etc/caddy/Caddyfile:ro \
  -v /your/caddy-data:/data/caddy \
  ghcr.io/kpa-clawbot/corescope:latest

Disable built-in services with -e DISABLE_MOSQUITTO=true or -e DISABLE_CADDY=true, or drop a .env file in your data volume. See docs/deployment.md for the full reference.

Build from Source

git clone https://github.com/Kpa-clawbot/CoreScope.git
cd CoreScope
./manage.sh setup

The setup wizard walks you through config, domain, HTTPS, build, and run.

./manage.sh status       # Health check + packet/node counts
./manage.sh logs         # Follow logs
./manage.sh backup       # Backup database
./manage.sh update       # Pull latest + rebuild + restart
./manage.sh mqtt-test    # Check if observer data is flowing
./manage.sh help         # All commands

Configure

Copy config.example.json to config.json and edit:

{
  "port": 3000,
  "mqtt": {
    "broker": "mqtt://localhost:1883",
    "topic": "meshcore/+/+/packets"
  },
  "mqttSources": [
    {
      "name": "remote-feed",
      "broker": "mqtts://remote-broker:8883",
      "topics": ["meshcore/+/+/packets"],
      "username": "user",
      "password": "pass",
      "iataFilter": ["SJC", "SFO", "OAK"]
    }
  ],
  "channelKeys": {
    "public": "8b3387e9c5cdea6ac9e5edbaa115cd72"
  },
  "defaultRegion": "SJC"
}
Field Description
port HTTP server port (default: 3000)
mqtt.broker Local MQTT broker URL ("" to disable)
mqttSources External MQTT broker connections (optional)
channelKeys Channel decryption keys (hex). Hashtag channels auto-derived via SHA256
defaultRegion Default IATA region code for the UI
dbPath SQLite database path (default: data/meshcore.db)

Environment Variables

Variable Description
PORT Override config port
DB_PATH Override SQLite database path

Architecture

                           ┌─────────────────────────────────────────────┐
                           │              Docker Container               │
                           │                                             │
Observer → USB →           │  Mosquitto ──→ Go Ingestor ──→ SQLite DB   │
  meshcoretomqtt → MQTT ──→│                    │                        │
                           │              Go HTTP Server ──→ WebSocket   │
                           │                    │               │        │
                           │              Caddy (HTTPS) ←───────┘        │
                           └────────────────────┼────────────────────────┘
                                                │
                                             Browser

Two-process model: The Go ingestor handles MQTT ingestion and packet decoding. The Go HTTP server loads all packets into an in-memory store on startup (5 indexes for fast lookups) and serves the REST API + WebSocket broadcast. Both are managed by supervisord inside a single container with Caddy for HTTPS and Mosquitto for local MQTT.

MQTT Setup

  1. Flash an observer node with MESH_PACKET_LOGGING=1 build flag
  2. Connect via USB to a host running meshcoretomqtt
  3. Configure meshcoretomqtt with your IATA region code and MQTT broker address
  4. Packets appear on topic meshcore/{IATA}/{PUBKEY}/packets

Or POST raw hex packets to POST /api/packets for manual injection.

Project Structure

corescope/
├── cmd/
│   ├── server/              # Go HTTP server + WebSocket + REST API
│   │   ├── main.go          # Entry point
│   │   ├── routes.go        # 40+ API endpoint handlers
│   │   ├── store.go         # In-memory packet store (5 indexes)
│   │   ├── db.go            # SQLite persistence layer
│   │   ├── decoder.go       # MeshCore packet decoder
│   │   ├── websocket.go     # WebSocket broadcast
│   │   └── *_test.go        # 327 test functions
│   └── ingestor/            # Go MQTT ingestor
│       ├── main.go          # MQTT subscription + packet processing
│       ├── decoder.go       # Packet decoder (shared logic)
│       ├── db.go            # SQLite write path
│       └── *_test.go        # 53 test functions
├── proto/                   # Protobuf API definitions
├── public/                  # Vanilla JS frontend (no build step)
│   ├── index.html           # SPA shell
│   ├── app.js               # Router, WebSocket, utilities
│   ├── packets.js           # Packet feed + hex breakdown
│   ├── map.js               # Leaflet map + route visualization
│   ├── live.js              # Live trace + VCR playback
│   ├── channels.js          # Channel chat
│   ├── nodes.js             # Node directory + detail views
│   ├── analytics.js         # 11-tab analytics dashboard
│   └── style.css            # CSS variable theming (light/dark)
├── docker/
│   ├── supervisord-go.conf  # Process manager (server + ingestor)
│   ├── mosquitto.conf       # MQTT broker config
│   ├── Caddyfile            # Reverse proxy + HTTPS
│   └── entrypoint-go.sh     # Container entrypoint
├── Dockerfile               # Multi-stage Go build + Alpine runtime
├── config.example.json      # Example configuration
├── test-*.js                # Node.js test suite (frontend + legacy)
└── tools/                   # Generators, E2E tests, utilities

For Developers

Test Suite

380 Go tests covering the backend, plus 150+ Node.js tests for the frontend and legacy logic, plus 49 Playwright E2E tests for browser validation.

# Go backend tests
cd cmd/server && go test ./... -v
cd cmd/ingestor && go test ./... -v

# Node.js frontend + integration tests
npm test

# Playwright E2E (requires running server on localhost:3000)
node test-e2e-playwright.js

Generate Test Data

node tools/generate-packets.js --api --count 200

Migrating from Node.js

If you're running an existing Node.js deployment, see docs/go-migration.md for a step-by-step guide. The Go engine reads the same SQLite database and config.json — no data migration needed.

Contributing

Contributions welcome. Please read AGENTS.md for coding conventions, testing requirements, and engineering principles before submitting a PR.

Live instance: analyzer.00id.net — all API endpoints are public, no auth required.

API Documentation: CoreScope auto-generates an OpenAPI 3.0 spec. Browse the interactive Swagger UI at /api/docs or fetch the machine-readable spec at /api/spec.

License

MIT

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