#835: inside one driver namespace, a secret:<ns>/<X>/... reference whose first
segment names ANOTHER existing same-type driver instance (id or name,
case-insensitive; another-instance match beats an own-name match, so renaming
one's driver after a victim's unlocks nothing) is refused at save
(DriverConfigSaveGate.ValidateAsync), deploy (CredentialReferenceOtherInstance,
Heidenhain included), Test Connect (TestDriverConnect.DriverInstanceId, ConfigDb
read off the mailbox) and live browse (BrowserSessionService, fail-closed without
a ConfigDb). One rule: DriverCredentialPolicy.DescribeOtherInstanceProblems +
DriverInstanceIdentities. Shared names and the driver's own id stay valid; env:
is not instance-scoped. Running drivers are unchanged (warn-only window: the
deploy gate and the upgrade preflight / /raw banner list them).
#836: OpcUaClient UserCertificatePath is a relative path inside
Drivers:OpcUaClient:UserCertificateDirectory (default
<LocalAppData>/OtOpcUa/pki/user-certificates). Syntactic rule (CredentialFilePaths,
a DriverCredentialPolicy path field) at every #815 seam; at load time
ResolveSecretRefsAsync joins, canonicalises and requires lexical AND
link-resolved containment before the PFX password is resolved, and
LoadCertificate refuses an unresolved path. A running driver's pre-#836 absolute
path keeps loading with a rate-limited warning (LegacyCredentialReferenceTracker.ReportPath).
Co-Authored-By: Claude <noreply@anthropic.com>
User decision: save, Test Connect, live browse and the deploy gate keep
refusing out-of-namespace credential references, but an ALREADY-DEPLOYED
driver must not fault at the upgrade restart or (Galaxy) at the next
gateway reconnect, since ReopenAsync re-resolves Gateway.ApiKeySecretRef.
- LegacyCredentialReferenceTracker (Core.Abstractions): the one, deprecated,
call-site-chosen compatibility path. Running Galaxy (InitializeAsync,
ReopenAsync, ack fallback) and OpcUaClient (session open) pass it and keep
the pre-#815 semantics (case-insensitive prefixes, Galaxy file:, OpcUaClient
literal pass-through) with a rate-limited Warning (driver/field/allowed
form, never the value) and a credential-compat:<field> diagnostics entry
(both drivers now implement IDriverDiagnostics). Browsers and probes pass
none and stay hard-fail; Heidenhain has none.
- Deploy-gate message names the migration.
- Upgrade preflight: CredentialReferencePreflightService (admin nodes, once
after ApplicationStarted, ConfigDb only, resolves nothing) logs a Warning
per Draft row / Deployed-artifact finding; the /raw banner shows them plus
Running drivers reporting warn-only use (driver-health diagnostics).
- docs/security.md: exact replacement table (incl. the old form default
env:MX_API_KEY, file:, un-namespaced secret:, casing changes), the
ReopenAsync reconnect behaviour, the warn-only window and its removal.
Co-Authored-By: Claude <noreply@anthropic.com>
Joseph Doherty