Files
SocialPub/PrivaPub/Federation/Inbox/Handlers/DeleteHandler.cs
T
thepraandClaude Opus 5.5 8f25bf056d Everything on, phase 4a: one answer everywhere for counts, search, collections and the instance API
Owner decision 2026-10-04: fix the mismatches and every other mismatch of the same kind.

- One counting rule (Domain/Privacy/Counted), Mastodon's. It is used for a persona's statuses_count, its outbox
  totalItems, NodeInfo localPosts and the instance status_count, which used to count four different things. It
  counts every post that is neither deleted nor a DM, boosts included, and circle and located posts too (owner
  decision). A group's count includes its remote members' posts.
- Users. Personas of banned or deleted roots no longer count, and are not found in search. NodeInfo now gives
  activeMonth and activeHalfyear, and the v2 instance gives active_month instead of a constant 0.
- replies_count counts only public and unlisted replies, so it no longer tells anyone that a private reply exists.
  Migration _012 recounts it.
- A remote account that deletes itself takes everything out of every count (GoneActors): its likes, downvotes,
  reactions and poll votes go and their counters come back, as do its boosts', replies' and quotes' counts, and its
  notifications. Lookups, account lists, search and favourited_by no longer show it. Migration _012 applies this to
  accounts already gone.
- Deleting a post also deletes its pins and the local boosts of it.
- /stalking gives the same total as following_count. Members are still never listed, and hide_collections is now
  always true, since the setting never did anything.
- Joining a community by invitation is following it, so /flock and /groupies agree; leaving unfollows.
- Search. Anyone may search, as on Mastodon; resolve and offset need a sign-in, offset pages, and deleted accounts
  are never found.
- notifications/unread_count counts what the list shows, and the owner's follower and following lists page with
  Link.
- The instance API advertises what is enforced:
  - max_characters, now enforced with a 422;
  - max_pinned_statuses = MaxPins;
  - the media types and limits MediaService and MediaOptions accept;
  - PollService's limits;
  - the configured languages;
  - no streaming URL until streaming exists.

  domain_count counts the servers we have exchanged with; which ones stays unpublished (peers is empty).
- Routes Mastodon answers now answer instead of 404:
  - directory, tags/{name}, timelines/link and identity_proofs;
  - instance/languages, translation_languages, domain_blocks and privacy_policy;
  - the v1 and v2 notification policy, and notification requests.

Also, from phase 3: a recovered password ends /clientapi sessions through a per-root SessionStamp claim instead of
comparing the JWT's whole-second nbf with the change time. That comparison let a token issued in the same second
survive, which made a test flaky.

671 tests pass.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ELjqpznMFMNrJoJUj6K5p2
2026-10-04 03:48:40 +02:00

94 lines
3.2 KiB
C#

using MongoDB.Entities;
using PrivaPub.Domain.Statuses;
using PrivaPub.Federation.Actors;
using PrivaPub.Federation.Objects;
using PrivaPub.Federation.Outbox;
using PrivaPub.Federation.Rendering;
using PrivaPub.Models.Federation;
using PrivaPub.Models.Group;
using PrivaPub.Models.Post;
using PrivaPub.Models.Social;
using PrivaPub.Models.User;
using PrivaPub.StaticServices;
using System.Text.Json.Nodes;
using static PrivaPub.Federation.Inbox.ForeignMembers;
using static PrivaPub.Federation.Objects.ActivityJson;
using PostEntity = PrivaPub.Models.Post.Post;
namespace PrivaPub.Federation.Inbox.Handlers
{
public class DeleteHandler : IActivityHandler
{
readonly DbEntities _dbEntities;
readonly ILocalActorService _localActors;
readonly IRemoteActorService _remoteActors;
readonly IDeliveryService _delivery;
readonly IGroupDistributor _groups;
readonly IQuoteService _quotes;
public DeleteHandler(DbEntities dbEntities, ILocalActorService localActors, IRemoteActorService remoteActors, IDeliveryService delivery,
IGroupDistributor groups, IQuoteService quotes)
{
_quotes = quotes;
_groups = groups;
_dbEntities = dbEntities;
_localActors = localActors;
_remoteActors = remoteActors;
_delivery = delivery;
}
public string Type => "Delete";
public async Task Handle(JsonNode activity, ForeignAvatar actor, CancellationToken token)
{
var delete = activity;
var objectUri = Id(delete["object"]);
if (!Origin.Same(objectUri, actor.ActorURI))
{
Arrival.Drop("cross-origin");
return;
}
if (objectUri == actor.ActorURI)
{
Arrival.Accept("actor-delete");
Arrival.About(actor.AvatarType.ToString(), created: actor.Published);
actor.DeletionAt = DateTime.UtcNow;
actor.AccountState = AvatarAccountState.Deleted;
await DB.Default.SaveAsync(actor, token);
var followers = await _dbEntities.Followers.Match(f => f.ActorURI == actor.ActorURI).ExecuteAsync(token);
foreach (var follower in followers)
{
await DB.Default.DeleteAsync<Follower>(follower.ID);
if (follower.LocalActorKind == LocalActorKind.Group)
await RemoveForeignMember(follower.LocalActorId, actor.ActorURI, token);
}
await DB.Default.DeleteAsync<Following>(f => f.TargetActorURI == actor.ActorURI);
await DB.Default.DeleteAsync<TimelineEntry>(e => e.AuthorAccountId == actor.ID);
await DB.Default.Update<PostEntity>().Match(p => p.ActorURI == actor.ActorURI).Modify(p => p.AuthorGone, true).ExecuteAsync(token);
await GoneActors.Forget(actor, token);
return;
}
await RemoteDeletes.Tombstone(objectUri, token);
var post = await _dbEntities.Posts.Match(p => p.ObjectURI == objectUri && p.ActorURI == actor.ActorURI).ExecuteFirstAsync(token);
if (post == default)
{
Arrival.Accept("tombstone-only");
await _quotes.Revoke(objectUri, token);
return;
}
Arrival.Accept("removed");
Arrival.About(post.ObjectType, post.Visibility, post.CreationDate);
await RemoteDeletes.Remove(post, objectUri, token);
if (!string.IsNullOrEmpty(post.GroupId) && await _localActors.FindById(LocalActorKind.Group, post.GroupId, token) is { IsCircle: false } community)
await _groups.Announce(community, activity.AsObject(), post.ObjectURI, isNewPost: false, token);
}
}
}