BundleUnlockRateLimiter was registered (ServiceCollectionExtensions), injected
into BundleImporter, unit-tested, documented on
TransportOptions.MaxUnlockAttemptsPerIpPerHour = 10 and pinned in
appsettings.Central.json — but _unlockRateLimiter was never invoked. A
brute-force passphrase attacker against a stolen bundle was bounded only by the
per-bundle 3-strike lockout, which a re-export side-steps (new ContentHash).
LoadAsync now registers every unlock attempt against the limiter. Ordering is
load-bearing: AFTER the per-bundle lockout check (hammering a locked bundle
spends no hourly budget) and BEFORE the decrypt (so a denial burns no per-bundle
strike — otherwise the throttle would be a way to lock a bundle someone is
legitimately importing). Over budget throws the new
BundleUnlockThrottledException, fail-closed with a clear message on both
surfaces; it lives in Commons because the management surface (Commons-only
references) must catch it to return a curated error rather than MapFault's
generic internal-error text.
Client key plumbing:
- Central UI: new scoped CircuitClientAddressProvider snapshots
Connection.RemoteIpAddress at circuit establishment — the same constraint and
the same pattern as CookieAuthenticationStateProvider, since HttpContext is
null by the time a circuit submits a passphrase.
- CLI/management: additive ManagementEnvelope.ClientIp, stamped by
ManagementEndpoints and threaded through DispatchCommand to the preview/import
bundle handlers.
- No attributable address => a single SHARED "<unattributed>" bucket, not a
bypass: unknown clients get a stricter budget, never none. Per-client
isolation is only real behind a ForwardedHeaders-trusted proxy, the same
caveat the login throttle carries (Component-Security.md).
Docs: Component-Transport.md + docs/components/Transport.md record the two-level
ordering, the client-key sourcing, the shared-bucket fallback and a
troubleshooting entry for the new error.
Tests: 6 importer tests (cap enforced; denial != passphrase failure, no strike
burned; per-client isolation; shared unattributed bucket; unencrypted bundles
consume no budget; a locked bundle spends no hourly budget) — 4 of the 6 fail
with the limiter call disabled, i.e. against the dead-code state. Plus
ManagementActor tests pinning the ClientIp forwarding and the curated
throttle error.
Only BundleImporter.ApplyAsync released an import session, so every path that
opened one and did NOT apply held one of MaxConcurrentImportSessions (8) — and
the DECRYPTED bundle content that T-007 deliberately zeroes on the apply paths —
for the full BundleSessionTtlMinutes (30). Eight abandonments locked out all
imports on the active node; observed live (R6: 3 back-to-back suite runs held 6
of 8 slots until central-b was restarted).
New IBundleImporter.Abandon(sessionId): the same zero-then-remove release
ApplyAsync performs, idempotent (double release / unknown id / expired id are
no-ops) and only ever given the random-GUID id its caller opened, so it can
never evict another circuit's session.
Wired into every abandonment path:
- Central UI wizard — ReleaseSession() from new upload, TryLoadAsync (before it
overwrites _session), Back-to-Upload / ResetSessionState, the 3-strike lockout
reset, and Dispose (navigation away / circuit teardown).
- CLI transport preview — a preview never applies, so nothing released it at
all; now released in a finally.
- CLI transport import — covers the pre-apply aborts (blocker rows, unresolved
site/connection mappings).
Class doc's "an abandoned wizard does not leak" claim is true again (it only
ever covered the staged plaintext temp file). Component-Transport.md +
docs/components/Transport.md now record the explicit-release contract and that
BundleSessionEvictionService is a TTL backstop, not an abandonment path.
Tests: 4 bUnit tests over a REAL BundleSessionStore (dispose / back-to-upload /
apply-then-dispose idempotency / concurrent-circuit isolation) — 3 of the 4 fail
against the pre-fix page; 4 importer tests (release + zeroing, idempotency,
cross-session isolation, and the slot-cap regression).
Renames the 13 SCADALINK_* runtime env vars → SCADABRIDGE_*, the ScadaLink__
.NET config keys → ScadaBridge__, the stale ScadaLink.Host.exe assembly name
→ ZB.MOM.WW.ScadaBridge.Host.exe, the scadalink_app SQL login → scadabridge_app,
and residual identifiers/comments/docs. Migration records (prior rename
tooling/design, DB-rename helper, this scrub script) carved out.
Adds tools/scrub-scadalink-refs.sh.
Joseph Doherty