5 files changed, 38 insertions, 6 deletions
diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index 4955243ab..d752f4f04 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -439,7 +439,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
 
   defp do_block(blocker, blocked, activity_id, local) do
-    outgoing_blocks = Config.get([:activitypub, :outgoing_blocks])
     unfollow_blocked = Config.get([:activitypub, :unfollow_blocked])
 
     if unfollow_blocked do
@@ -447,8 +446,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       if follow_activity, do: unfollow(blocker, blocked, nil, local)
     end
 
-    with true <- outgoing_blocks,
-         block_data <- make_block_data(blocker, blocked, activity_id),
+    with block_data <- make_block_data(blocker, blocked, activity_id),
          {:ok, activity} <- insert(block_data, local),
          _ <- notify_and_stream(activity),
          :ok <- maybe_federate(activity) do
diff --git a/lib/pleroma/web/activity_pub/builder.ex b/lib/pleroma/web/activity_pub/builder.ex
index 922a444a9..4a247ad0c 100644
--- a/lib/pleroma/web/activity_pub/builder.ex
+++ b/lib/pleroma/web/activity_pub/builder.ex
@@ -62,6 +62,16 @@ defmodule Pleroma.Web.ActivityPub.Builder do
      }, []}
   end
 
+  @spec tombstone(String.t(), String.t()) :: {:ok, map(), keyword()}
+  def tombstone(actor, id) do
+    {:ok,
+     %{
+       "id" => id,
+       "actor" => actor,
+       "type" => "Tombstone"
+     }, []}
+  end
+
   @spec like(User.t(), Object.t()) :: {:ok, map(), keyword()}
   def like(actor, object) do
     with {:ok, data, meta} <- object_action(actor, object) do
diff --git a/lib/pleroma/web/activity_pub/object_validators/delete_validator.ex b/lib/pleroma/web/activity_pub/object_validators/delete_validator.ex
index e06de3dff..f42c03510 100644
--- a/lib/pleroma/web/activity_pub/object_validators/delete_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/delete_validator.ex
@@ -51,6 +51,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.DeleteValidator do
     Page
     Question
     Video
+    Tombstone
   }
   def validate_data(cng) do
     cng
diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index be7b57f13..80701bb63 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -14,7 +14,9 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   alias Pleroma.Repo
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.ActivityPub.Builder
   alias Pleroma.Web.ActivityPub.ObjectValidator
+  alias Pleroma.Web.ActivityPub.ObjectValidators.Types
   alias Pleroma.Web.ActivityPub.Pipeline
   alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.ActivityPub.Visibility
@@ -590,6 +592,9 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
          {:ok, follow_activity} <- Utils.update_follow_state_for_all(follow_activity, "accept"),
          %User{local: true} = follower <- User.get_cached_by_ap_id(follow_activity.data["actor"]),
          {:ok, _relationship} <- FollowingRelationship.update(follower, followed, :follow_accept) do
+      User.update_follower_count(followed)
+      User.update_following_count(follower)
+
       ActivityPub.accept(%{
         to: follow_activity.data["to"],
         type: "Accept",
@@ -599,7 +604,8 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
         activity_id: id
       })
     else
-      _e -> :error
+      _e ->
+        :error
     end
   end
 
@@ -720,6 +726,19 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
       ) do
     with {:ok, activity, _} <- Pipeline.common_pipeline(data, local: false) do
       {:ok, activity}
+    else
+      {:error, {:validate_object, _}} = e ->
+        # Check if we have a create activity for this
+        with {:ok, object_id} <- Types.ObjectID.cast(data["object"]),
+             %Activity{data: %{"actor" => actor}} <-
+               Activity.create_by_object_ap_id(object_id) |> Repo.one(),
+             # We have one, insert a tombstone and retry
+             {:ok, tombstone_data, _} <- Builder.tombstone(actor, object_id),
+             {:ok, _tombstone} <- Object.create(tombstone_data) do
+          handle_incoming(data)
+        else
+          _ -> e
+        end
     end
   end
 
diff --git a/lib/pleroma/web/activity_pub/utils.ex b/lib/pleroma/web/activity_pub/utils.ex
index 09b80fa57..f2375bcc4 100644
--- a/lib/pleroma/web/activity_pub/utils.ex
+++ b/lib/pleroma/web/activity_pub/utils.ex
@@ -6,6 +6,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   alias Ecto.Changeset
   alias Ecto.UUID
   alias Pleroma.Activity
+  alias Pleroma.Config
   alias Pleroma.Notification
   alias Pleroma.Object
   alias Pleroma.Repo
@@ -169,8 +170,11 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   Enqueues an activity for federation if it's local
   """
   @spec maybe_federate(any()) :: :ok
-  def maybe_federate(%Activity{local: true} = activity) do
-    if Pleroma.Config.get!([:instance, :federating]) do
+  def maybe_federate(%Activity{local: true, data: %{"type" => type}} = activity) do
+    outgoing_blocks = Config.get([:activitypub, :outgoing_blocks])
+
+    with true <- Config.get!([:instance, :federating]),
+         true <- type != "Block" || outgoing_blocks do
       Pleroma.Web.Federator.publish(activity)
     end