Files
HealthLog/src/lib
Marc-André Bombeck e31c66e959 fix(security): scrub wide events at the builder, encrypt the replay cache
Three leaks of the same class - data leaving the process unprotected.

addMeta and addExternalCall wrote their values verbatim while setError
and setHttp scrubbed, so the builder's redaction contract held for two
entry points out of four. The finished event is serialised whole to
stdout and the log store, which made meta a trusted sink by accident: a
Telegram request timeout put the bot token there, and the AI provider
chain fed upstream error bodies through it. Both now scrub, at any depth.

Scrubbing cannot help with the second half. A gateway that echoes the
request it rejected echoes the prompt, and on that path the prompt
carries the health snapshot; no pattern separates that from any other
text. Upstream bodies are therefore classified rather than quoted - the
diagnostic question is which rejection occurred and whether it repeats,
which a classification answers without the content.

The idempotency replay cache stored response bodies unencrypted. The
create paths echo their own decrypted payload, so cycle notes, mood text
and allergy reactions sat in cleartext for 24 hours in a column that
lands in every backup; the existing guard missed it because it matches
secret shapes and health data is not secret-shaped. Bodies are encrypted
now, and when encryption is unavailable the response is not cached at
all rather than written in the clear.

chore(release): v1.30.18
2026-07-19 01:28:20 +02:00
..
2026-06-19 22:20:31 +02:00
2026-05-29 22:07:10 +02:00
2026-06-19 22:20:31 +02:00
2026-03-10 20:14:33 +01:00
2026-03-10 20:14:33 +01:00

src/lib/

The server and runtime toolkit. Everything that is not a page, component, or route handler lives here: the API kit, auth, crypto, the rollup tier, AI providers, notifications, background jobs, and the integration clients. Route handlers and RSC pages compose these modules; the modules never reach back into app/.

Core request kit

  • api-handler.ts — the apiHandler wrapper every route uses. Auth resolver (cookie OR Bearer), requireAuth / requireAdmin (admin is cookie-only by construction), idempotency plumbing, Wide-Event builder, GlitchTip forwarder.
  • api-response.ts — the { data, error, meta? } envelope: apiSuccess / apiError, safeJson, trusted-proxy IP resolver, returnAllZodIssues + sanitiseZodIssues.
  • rate-limit.ts — Postgres-backed sliding-window limiter (single atomic upsert); multi-instance correct.
  • idempotency.ts — user-scoped idempotency keys that refuse to cache secret-shaped responses.
  • query-keys/ — the only legal source of TanStack Query queryKey / mutationKey arrays (enforced by an ESLint rule); per-feature files behind the index.ts barrel.
  • safe-fetch.ts — the one documented outbound-egress entry (redirect: "manual" + timeout; optional connect-time DNS-rebinding pin). Raw fetch( under lib/ + app/ is banned by ESLint.
  • db.ts — the Prisma client singleton.
  • crypto.ts — AES-256-GCM at rest with versioned key ids, fail-closed loader, rotation primitives.

Subsystems

  • auth/ — Postgres sessions, secure-cookie flag policy, passkey (WebAuthn) + Argon2id password, per-device refresh-token rotation, HMAC Bearer tokens.
  • ai/ — multi-provider insight + Coach engine: provider-chain.ts, hand-rolled {openai,anthropic,local,codex,mock}-client.ts, coach/, prompts/, citation + confidence helpers.
  • rollups/ — DAY/WEEK/MONTH/YEAR pre-aggregations for measurements, mood, and medication compliance. Read-swap pattern: probe the rollup, fall back to live SQL on a coverage miss.
  • notifications/ — the dispatcher cascade (APNs → Telegram → ntfy → Web Push), per-channel senders/, retry policy, VAPID config.
  • jobs/ — pg-boss workers: reminders, insight pre-generation, backups, retention sweeps, integration backfills. Recurring work belongs here, not in scripts/.
  • integrations/, withings/, whoop/, fitbit/ — OAuth clients and sync services for the device providers; sync/ holds the shared delta-feed plumbing.
  • analytics/ — trend calculations, cadence-aware medication compliance.ts, correlations.
  • insights/, fhir/, doctor-report-*.ts — insight pipeline, FHIR R4 export, client-side doctor-report PDF.
  • openapi/ — Zod registry that is the source of truth for docs/api/openapi.yaml.
  • logging/, observability/, monitoring/ — Wide-Event transports and the central redaction denylists (redact at the egress boundary, not the call site).
  • validations/ — shared Zod schemas, including the SSRF isPublicUrl floor.
  • i18n/, tz/ + timezone.ts, format*.ts — translations, timezone helpers (Berlin for display, UTC in DB), locale formatting.

Conventions

Kebab-case filenames. See ../../CLAUDE.md "Code conventions" and "Security-relevant patterns"; the critical-files map there cites the exact entry points. Most modules carry tests in a sibling __tests__/.