DMs now come exclusively from the home instance's ready payload.
Remote origins' DM channels are ignored. The deduplication logic
that preferred home copies over remote copies is no longer needed.
Removed dead loadDmChannels() (zero call sites).
All DM creation and add-member call sites now use the home api client
and pass homeUserId/homeInstance instead of routing to the remote instance.
Also updates addMember in the API client to accept AddDmMemberRequest.
Extend the add-member endpoint to resolve federated identity via
resolveOrCreateReplicatedUser() when homeUserId+homeInstance are provided,
falling back to the existing local userId lookup.
migrateFixOneOnOneOwnerIds was too aggressive — it set owner_id=NULL
on any 2-member channel, including group DMs that happened to have 2
members. The group DM repair then restored owner_id, creating noisy
logs every restart.
Now only targets channels with NULL or 32-char hex federatedId
(true 1-on-1 DMs), skipping UUID-format group DMs.
POST /api/dm created channels with federatedId=NULL, so when the S2S
reply arrived, processCreateEvent couldn't find the channel and created
a duplicate. Now computes the deterministic SHA256 hash at creation time
when either participant is federated.
Client-federation users (e.g., youruser@nova logged into orbit)
send DMs on the remote server. The S2S relay forwards these back to the
author's home instance, but verifyAttribution rejected them because the
author's homeInstance didn't match the sourceInstance.
Now also accepts when the author's home matches the receiving instance
(getOurOrigin()), covering the homeward relay case.
The outbox worker interval was reduced from 10s to 1s in FED-009,
so a busy sender can now hit 60 req/min during sustained traffic.
90 gives 50% headroom.
- Resolve homeUserId from DB in sendFederatedCallStart/End (not raw userId)
- Clear existing timeout in createFederatedCall before overwriting
- Clear federatedCallToken/Url in leaveVoice and handleForceDisconnect
- Remove unnecessary `as any` cast in relay processor
- Fix race window: store pendingHmacSecret AFTER remote peer confirms,
not before (admin endpoint + auto-rotation worker)
- Add hex validation on newSecret at /peer/rotate endpoint
- Use pending-secret-aware signing in initial sync worker
- Add test for corrupt state (pendingHmacSecret set, secretRotationAt null)
Prevent malicious peers from forging events attributed to users on other
instances. Every relay event processor now verifies the acting user's
homeInstance (from payload) matches X-Federation-Origin (from HMAC-verified
header) via verifyAttribution(), normalized to bare domain.
- Add verifyAttribution() helper using extractDomain normalization
- Guard all 13 event processors before any user resolution or DB writes
- Add homeInstance to FederationRelayReaction type + outbound payloads
- Replace unnormalized string equality in friend handlers
- Log mismatched values on rejection for debugging
Pass nonce through to verifySignature and enforce replay protection in
both /api/federation/relay and /api/federation/sync: reject duplicate
nonces (409), reject nonce-less requests from peers that previously sent
nonces (401), warn for legacy peers, and auto-ratchet nonceSupported flag.
Adds nonce_supported INTEGER column to the federation_peers table in both
the Drizzle schema definition and via a safe ALTER TABLE migration, enabling
the auto-ratchet mechanism for replay attack protection.
- signRequest now accepts optional nonce; payload becomes `${timestamp}.${nonce}.${body}` when present, falling back to `${timestamp}.${body}` for legacy peers
- verifySignature accepts matching nonce parameter and passes it through
- buildFederationHeaders generates a UUID nonce per request and includes X-Federation-Nonce header
- parseFederationHeaders extracts X-Federation-Nonce into nonce field (null when absent)
Sliding-window rate limiter (30 req/min per peer origin) on POST
/api/federation/relay, matching the existing accept endpoint pattern.
Returns 429 when exceeded — outbox workers retry with backoff. Check
runs before HMAC verification to avoid wasted computation on floods.
Extract processRelayEvents() from the relay HTTP handler and call it
directly in runInitialSyncForNewPeers(), eliminating the HTTP round-trip
through public DNS that failed on networks without hairpin NAT.
Two real accounts from the same remote instance sharing a 1-on-1 DM
are different people, not duplicates. The shared DM is a legitimate
relay. Only merge when at least one user has passwordHash =
'!federation-replicated' (a relay-created stub).
Jannis Braun