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Persist inbound Create activities and link their deliveries - #120
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The inbox listener now stores a received Create, with its remote actor and object, when Fedify has authenticated it and it meets DrFed's rules: it has an ID, its object is a Note or an Article with content, on its actor's origin and attributed to it as FEP-fe34 requires, its actor has an inbox, and its text is storable. The activity and its embedded object are stored as received, found through JSON-LD expansion whatever terms, graphs or containers the document uses. An IRI already stored is reused under a lock, and a Create already stored writes nothing. Every inbound delivery that was verified and answered with 2xx is linked to the activity its recorded IRI names, duplicates Fedify skips included, from both the synchronous recorder and the queue worker; an outbound delivery is linked to the activity it sends. The GraphQL schema adds Activity.deliveries, filtered before paging to the instances the viewer may read, and ActivityDelivery.activity. Remote actors keep their preferredUsername as received, so Actor.username and Actor.handle become nullable, and username constraints apply only to local actors. The test "rejects a verified Create claiming an IRI on another origin" is marked todo: Fedify 2.4.1 still accepts an activity ID on another origin than its actor. It is expected to pass once DrFed updates to the next Fedify security release, which rejects such activities with 401. AI provenance: The user wrote a plan to resolve #88 and asked Claude Code to implement the plan and then address review findings on lockfile consistency, duplicate writes, JSON-LD object extraction, lock ordering, and unstorable text. Claude Code wrote the implementation, migration, tests, and documentation, reproduced the deadlock and its fix against PostgreSQL 17 in a container, and ran the build, checks, and all tests. Codex reviewed the changes. The user also reviewed and verified them. Fixes #88 Assisted-by: Claude Code:claude-opus-5-5 Assisted-by: Codex:gpt-6-astra
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📝 Walkthrough
Merge Risk: 🔵 Low · up to The migration may pause writes on populated tables. Plan its deployment with table size in mind; no new public-address classification regression was found. Pre-merge checks |
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.oxlintrc.json changes eslint/max-statements and import/max-dependencies from repository warnings to off. This global lint configuration change does not implement issue [#88] or the stated PR … |
Revert the two global rule changes in .oxlintrc.json. Keep only focused lint suppressions that the implementation requires, or retain the existing warning rules. |
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Check name Status Explanation Description check The description directly explains inbound Create persistence, delivery linking, GraphQL changes, nullable remote actor usernames, testing, and the related issue. Title check The title clearly and concisely summarizes the primary changes: persisting inbound Create activities and linking their deliveries. Linked Issues check Issue [ #88] coding requirements are met. The inbox path accepts authenticated remoteCreateactivities only when the object type, actor attribution, FEP-fe34 origin, content, and actor data are vali…Docstring Coverage Docstring coverage is 88.06% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 67 functions across 49 files. (1 skipped: 1…
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.oxlintrc.jsonchangeseslint/max-statementsandimport/max-dependenciesfrom repository warnings tooff. This global lint configuration change does not implement issue [#88] or the stated PR intent. The other reported changes have a stated connection to activity persistence, delivery linking, visibility, actor representation, or their tests and documentation.
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Review comments at
@packages/models/drizzle/20261010044954_link_activity_deliveries_to_activities/migration.sql:
- Around line 6-7: Add both constraints in the migration as NOT VALID, then add
a later migration that validates the activity_deliveries foreign key and actors
check constraint. Keep validation out of the original migration so its
transactional locks are not held during the constraint scans.
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📒 Files selected for processing (42)
.oxlintrc.jsonCONTRIBUTING.mdpackages/drfed/src/index.tspackages/drfed/src/lifecycle.test.tspackages/federation/README.mdpackages/federation/package.jsonpackages/federation/src/activity-delivery/inbound.tspackages/federation/src/activity-delivery/outbound.tspackages/federation/src/activity-delivery/queue.tspackages/federation/src/activity-delivery/tracking.tspackages/federation/src/federation.test.tspackages/federation/src/inbox-persist.tspackages/federation/src/inbox.tspackages/federation/src/index.tspackages/federation/src/task-queue.tspackages/graphql/README.mdpackages/graphql/src/activity-delivery/activity.test.tspackages/graphql/src/activity-delivery/entry.tspackages/graphql/src/activity-delivery/inbox-fixture.test.tspackages/graphql/src/activity-delivery/persist.test.tspackages/graphql/src/actor.test.tspackages/graphql/src/actor.tspackages/graphql/src/builder.tspackages/models/README.mdpackages/models/drizzle/20261010044954_link_activity_deliveries_to_activities/migration.sqlpackages/models/drizzle/20261010044954_link_activity_deliveries_to_activities/snapshot.jsonpackages/models/package.jsonpackages/models/src/activity-delivery.test.tspackages/models/src/activity-delivery.tspackages/models/src/index.tspackages/models/src/instance.test.tspackages/models/src/instance.tspackages/models/src/relations.tspackages/models/src/resource.test.tspackages/models/src/resource.tspackages/models/src/schema.tspackages/models/src/text.tspackages/web/src/actor.tspackages/web/src/components/ActorCard.tsxpackages/web/src/components/ActorDetail.tsxpackages/web/src/routes/workspace/create/[instance_id]/objects.tsxpnpm-workspace.yaml
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Assisted-by: Claude Code:claude-opus-5-5
dahlia
requested changes
Oct 10, 2026
sij411
requested changes
Oct 10, 2026
The copy button next to an actor's heading was shown only when the actor had a handle, while the heading falls back to the actor IRI for a remote actor without preferredUsername. The button is now always shown and copies the same value the heading displays, with an accessible label that names what it copies. #120 (comment) Claude Code applied the change from the review plan the contributor approved. Assisted-by: Claude Code:claude-opus-5-5
activity_deliveries.activity_id only guaranteed that the activity existed. recordInbound() accepted an activityId and stored it without checking, so a caller could link an unverified or rejected delivery. InboundDeliveryEntry no longer takes activityId, leaving linkInboundActivity() as the only way to link an inbound delivery, and the new activity_deliveries_activity_check constraint refuses a linked inbound row unless it is verified and received or acknowledged. IRI equality with the linked activity stays with linkInboundActivity(). #120 (comment) Claude Code applied the change and its migration and tests from the review plan the contributor approved. Assisted-by: Claude Code:claude-opus-5-5
The inbox listener looks for the embedded object of a received Create in at most MAX_PROBES (64) places of the document, expanding it once for each. When the object lay beyond them, the object and the activity were stored, but Object.document was silently null, while the description promised that both were stored as received. Extraction is now documented as best effort rather than a condition of storing: the MAX_PROBES comment, the federation README, and the description of Object.document state that such an object is stored without its document, and that the Create's document, reachable through Object.activities, still holds it as received. A test reproduces the reviewer's case with 70 unrelated object values before the object. #120 (comment) The contributor chose the best effort direction over refusing such a Create and handed the plan to Claude Code, which implemented the comments, documentation, and test. Assisted-by: Claude Code:claude-opus-5-5
GraphQL served every stored activity and object to anyone, so a Create
a remote actor sent to one local actor without Public addressing could
be read anonymously through Activity.document, Object.contentHtml, and
Object.document, while Activity.deliveries protected only the delivery
history. The public policy for locally created objects had widened to
what other servers send.
Received content is an inbox's, which ActivityPub filters by the
requester's permission (5.2) and opens without authentication only when
addressed to the public (5.6). The new readableResource() predicate
decides what a viewer may read:
- An activity of a remote actor is readable when it is addressed to
the public, or by accepted members of a local instance whose
accepted inbound delivery is linked to it.
- An object of a remote actor is readable when it is addressed to the
public, or when an activity the viewer may read refers to it.
- Administrators read everything, and activities and objects of local
actors stay readable whatever their addressing.
The full public IRI, as:Public, and Public count as the public, shared
with the classification rules. node and nodes, Resource.detail, and
Activity.object return null for what the viewer may not read, and
Actor.objects, Object.activities, and Collection.items with their
totalCount filter it in SQL before paging, so that cursors and counts
do not tell of it. Membership reuses viewableInstance(), which moves
with memberInstances() from builder.ts to readable.ts to avoid an
import cycle. The schema descriptions and the README state the rule.
#120 (comment)
The contributor decided to keep remote content without Public
addressing private and to implement it in this pull request, and asked
Claude Code to implement it. Claude Code wrote the predicate, its
application, the tests, and the documentation.
Assisted-by: Claude Code:claude-opus-5-5
sij411
previously approved these changes
Oct 10, 2026
dahlia
requested changes
Oct 10, 2026
A remote object used to be readable when any activity the viewer may read referred to it. Since an object IRI received again keeps its first snapshot, a later public Create carrying another version of the same object, or one received by another instance, exposed content that had been addressed to a single local actor. Each object row now records the activity that carried its snapshot, and a remote object is readable only when it is addressed to the public or the viewer may read that activity. The first-snapshot policy stays: ActivityPub 7.3 makes Update, not another Create with the same id, the way to change an object. An activity already stored is now refused before its object is written, so that the same activity naming another object never trips the new unique constraint. #120 (comment) Claude Code implemented the plan the user wrote with it for this review, including the migration, the storage and access changes, and the regression tests. The user reviewed and verified the changes. Assisted-by: Claude Code:claude-opus-5-5
dahlia
requested changes
Oct 10, 2026
An inbound delivery linked to an activity opened that activity, and the object bound to it, to its instance. linkInboundActivity() links a verified delivery by the activity IRI alone, so a second Create with the same activity and object IRIs but other contents, sent to another instance, let that instance's members read the snapshot only the first instance had received. Each inbound delivery now records in carried_snapshot whether its payload is the same JSON value as the stored document, and only such a delivery opens the activity to its instance. A delivery of the same IRI with other contents keeps its activity_id link for debugging, but grants nothing. The migration fills in deliveries linked before it by the same rule, skipping documents jsonb cannot hold. Since that link remains, ActivityDelivery.activity filters the activity by readableResource(), as the other fields reaching activities and objects do, so a delivery opens no more than a node lookup would. The regression test covers the same activity IRI sent to two instances through both node lookups and deliveries. #120 (comment) Claude Code implemented the changes for this review with the user, including the migration, the linking and access changes, and the regression tests, and ran the build, checks, and tests. Assisted-by: Claude Code:claude-opus-5-5
dahlia
requested changes
Oct 11, 2026
Activity.expectedClassifications looked up the activity's object without checking whether the viewer may read it, while the sibling Activity.object field did. A public activity referring to an object stored from a private one thus exposed the hidden object's addressing through its classifications. The field now runs the same isReadableResource() check first and returns an empty list for an object the viewer cannot read. The regression test reads the classifications of a public activity whose object was stored from a private one: viewers who may not read the object get an empty list, and the receiving instance's member and administrators keep the classifications. AI provenance: Claude Code applied the review fix and wrote the test following the contributor's plan, for the contributor to review. #120 (comment) Assisted-by: Claude Code:claude-opus-5-5
InboundDeliveryEntry and OutboundDeliveryEntry still accepted
carriedSnapshot, and recordInbound() and recordOutbound() spread it
into the inserted row. linkInboundActivity() only ever set the mark
to true, so a caller-supplied true survived a mismatched, missing, or
null payload, and a mark left from a deleted activity carried over
when the delivery was linked again to another activity stored under
the same IRI.
- carriedSnapshot is no longer part of either recording input, and
both record functions store false whatever the caller passes.
- linkInboundActivity() assigns the computed mark on both match and
mismatch every time it links a delivery.
The regression test records deliveries with a forged true value,
links them with matching, mismatched, unstorable, missing, and null
payloads, and re-links a delivery after its activity is deleted and
another is stored under the same IRI.
AI provenance: Claude Code applied the review fix and wrote the test
following the contributor's plan, for the contributor to review.
#120 (comment)
Assisted-by: Claude Code:claude-opus-5-5
When a Create refers to its object by IRI, a delivery whose payload
matches the stored activity proves only that it carried the reference,
not the object fetched apart from it, which may differ from fetch to
fetch. readableObject() still opened the stored object to every
instance whose delivery carried the activity, so an instance that
received the same envelope but fetched a redacted version could read
the version another instance fetched.
- objects.fetched records whether the stored document was fetched
rather than taken from the activity.
- The inbox listener notes the object it fetched, whether or not
the Create is stored, and the delivery keeps it as fetched_object.
A queue worker that runs before the inbox request is recorded
leaves it in the KV store for the recorder, as it does for the
received mark.
- carried_object_snapshot marks a delivery that carried the activity
and either took the object from it or fetched it as stored.
linkInboundActivity() decides it with carried_snapshot, and the
new recordFetchedObject() decides both again for a delivery linked
before its listener ran, as a queued duplicate is. Neither record
function takes the mark.
- readableObject() opens an object received by an instance only
through such a delivery; the activity is still opened by
carried_snapshot alone.
The migration cannot tell how a remote object stored before it was
had, so it takes each as fetched; none opens to an instance until a
delivery that fetched it as stored is linked.
The regression test sends the same envelope referring to the object by
IRI to three instances, synchronously and through the queue, serving a
secret version to the first and third and a redacted one to the second.
The second reads the activity but not the object; the first and third
read the secret. Model tests cover evidence arriving before and after
linking, embedded objects, mismatched payloads, unstorable documents,
and forged marks; a migration test covers the backfill.
AI provenance: Claude Code designed and implemented the fix within the
reviewer's direction and wrote the tests, for the contributor to
review.
#120 (comment)
Assisted-by: Claude Code:claude-opus-5-5
Fedify 2.4.3 fixes GHSA-4qhx-hhwf-8685: "Fixed inboxes accepting signed
activities whose IDs had a different origin from their actors. Such
deliveries now receive `401 Unauthorized` before they can supply
trusted embedded objects or reserve the genuine activity's idempotency
entry." DrFed's acceptance rules for received Create activities rely
on this check, so every @fedify/* package and @fedify/cli move to
2.4.3.
- The test of a verified Create claiming an IRI on another origin is
no longer todo. Fedify reports this refusal as verificationFailed
with verified attempts, the reason a failed HTTP signature also
gets, so the delivery's error is the body of Fedify's 401 response
rather than a reason of its own. DrFed does not infer one from the
body or check the origins again. The test also checks the status
code and the verified HTTP signature attempt.
- The federation README states that DrFed relies on Fedify 2.4.3 or
later for the origin check.
AI provenance: Claude Code updated the test and README following the
contributor's plan, for the contributor to review.
https://github.com/fedify-dev/fedify/security/advisories/GHSA-4qhx-hhwf-8685
Assisted-by: Claude Code:claude-opus-5-5
dahlia
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Oct 11, 2026
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Sorry that this review has stretched across so many rounds. I hope this can be the final one; I have included the relevant invariants and regression cases in the remaining comments so they can be addressed together without another piecemeal follow-up.
2chanhaeng
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Oct 12, 2026
readableObject() opened a remote object through the activity that
carried it in two ways the activity did not prove:
- A public carrier opened the stored object even when the object had
been fetched from its IRI, so a public Create that named a private
object by IRI exposed whatever the authenticated fetch returned to
anonymous viewers and unrelated members. A public activity makes
public no more than the IRI of an object it does not embed.
- `not remoteActivity(objects.activity_id)` also held when no
activities row existed for the pointer, since objects.activity_id
references resources rather than activities. A missing row was
therefore read as a local carrier and opened the object.
The carrier branch now inner joins the carrier's activities row, and a
public carrier opens only an object taken from it (fetched = false).
A fetched object opens by its own Public addressing or by a delivery
whose fetched document matches the stored one. A remote object's
carrier is always its own actor's remote Create, so no local-carrier
branch is kept. Objects the migration conservatively marked as
fetched stay closed without another grant.
carrier.test.ts goes through the real inbox path, synchronously and
through the queue: embedded or fetched objects, public or private
carriers and objects, and a second instance fetching the same, another,
or no document, checked for anonymous viewers, strangers, a member of
an instance that received nothing, both receiving members, and an
administrator, on node lookups, Activity.object, classifications, and
the author's object connection with its totalCount. It also covers a
later public activity and a tampered duplicate, a legacy row, and a
carrier row deleted and stored again with other or the same contents.
The shared reading helpers move to inbox-fixture.test.ts so both test
files can use them.
AI provenance: Claude Code implemented the fix and the tests following
the contributor's plan for the reviewer's direction; the contributor
reviewed them before committing.
#120 (comment)
#120 (comment)
Assisted-by: Claude Code:claude-opus-5-5
2chanhaeng
added a commit
that referenced
this pull request
Oct 12, 2026
classificationAuthor() took the author's followers IRI only from actor_collection_references, which is written for local actors alone. A remote actor's followers collection was therefore always unknown: a Create addressed to a declared, non-conventional collection such as https://remote.example/collections/alice-fans came out as Mastodon direct and Misskey specified rather than private and followers, and Mastodon got even the conventional path wrong. - actors.followers_url keeps the IRI a remote actor declares as followers, as received. It is not a collections row, since DrFed never fetched the collection and cannot claim its type or items. - The inbox listener takes it from the authenticated actor's followersId, which Fedify reads after JSON-LD expansion, and writes it only when the actor is first stored, like the rest of the actor's snapshot. - classificationAuthor() falls back to it after a local followers collection; without either, Misskey still guesses the usual path. The migration adds the column without backfill. DrFed is unreleased, null keeps the current behaviour, and reading the stored document's raw "followers" member would ignore JSON-LD aliases. The test receives Creates synchronously and through the queue from actors declaring a custom, the conventional, or no followers collection, addressed through to or cc with and without Public, and checks the stored IRI and both classifications, including that a later declaration of another collection does not replace the first. AI provenance: Claude Code implemented the change and the test following the contributor's plan; the contributor reviewed them before committing. #120 (comment) Assisted-by: Claude Code:claude-opus-5-5
readableObject() opened a remote object through the activity that
carried it in two ways the activity did not prove:
- A public carrier opened the stored object even when the object had
been fetched from its IRI, so a public Create that named a private
object by IRI exposed whatever the authenticated fetch returned to
anonymous viewers and unrelated members. A public activity makes
public no more than the IRI of an object it does not embed.
- `not remoteActivity(objects.activity_id)` also held when no
activities row existed for the pointer, since objects.activity_id
references resources rather than activities. A missing row was
therefore read as a local carrier and opened the object.
The carrier branch now inner joins the carrier's activities row, and a
public carrier opens only an object taken from it (fetched = false).
A fetched object opens by its own Public addressing or by a delivery
whose fetched document matches the stored one. A remote object's
carrier is always its own actor's remote Create, so no local-carrier
branch is kept. Objects the migration conservatively marked as
fetched stay closed without another grant.
carrier.test.ts goes through the real inbox path, synchronously and
through the queue: embedded or fetched objects, public or private
carriers and objects, and a second instance fetching the same, another,
or no document, checked for anonymous viewers, strangers, a member of
an instance that received nothing, both receiving members, and an
administrator, on node lookups, Activity.object, classifications, and
the author's object connection with its totalCount. It also covers a
later public activity and a tampered duplicate, a legacy row, and a
carrier row deleted and stored again with other or the same contents.
The shared reading helpers move to inbox-fixture.test.ts so both test
files can use them.
AI provenance: Claude Code implemented the fix and the tests following
the contributor's plan for the reviewer's direction; the contributor
reviewed them before committing.
#120 (comment)
#120 (comment)
Assisted-by: Claude Code:claude-opus-5-5
classificationAuthor() took the author's followers IRI only from actor_collection_references, which is written for local actors alone. A remote actor's followers collection was therefore always unknown: a Create addressed to a declared, non-conventional collection such as https://remote.example/collections/alice-fans came out as Mastodon direct and Misskey specified rather than private and followers, and Mastodon got even the conventional path wrong. - actors.followers_url keeps the IRI a remote actor declares as followers, as received. It is not a collections row, since DrFed never fetched the collection and cannot claim its type or items. - The inbox listener takes it from the authenticated actor's followersId, which Fedify reads after JSON-LD expansion, and writes it only when the actor is first stored, like the rest of the actor's snapshot. - classificationAuthor() falls back to it after a local followers collection; without either, Misskey still guesses the usual path. The migration adds the column without backfill. DrFed is unreleased, null keeps the current behaviour, and reading the stored document's raw "followers" member would ignore JSON-LD aliases. The test receives Creates synchronously and through the queue from actors declaring a custom, the conventional, or no followers collection, addressed through to or cc with and without Public, and checks the stored IRI and both classifications, including that a later declaration of another collection does not replace the first. AI provenance: Claude Code implemented the change and the test following the contributor's plan; the contributor reviewed them before committing. #120 (comment) Assisted-by: Claude Code:claude-opus-5-5
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Fixes #88.
Createthat Fedify authenticated when its object is aNoteor anArticleon the actor's origin and attributed to it (FEP-fe34). The activity and object are stored as received, and an IRI already stored is never overwritten.activity_deliveries.activity_idlinks each verified, 2xx inbound delivery to the activity its IRI names, duplicates included, and each outbound delivery to the activity it sends.Activity.deliveries, filtered to readable instances before paging, andActivityDelivery.activity.preferredUsernameas received, soActor.username andActor.handle` become nullable.One test is
todountil DrFed updates to the next Fedify security release.Verified with
mise run build,mise run check, andmise run test.AI disclosure: Claude Code (claude-opus-5-5) implemented the user's plan and review fixes and drafted this description; Codex (gpt-6-astra) reviewed it. The user reviewed and verified the changes.