defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
use Pleroma.DataCase
+ use Oban.Testing, repo: Pleroma.Repo
+
alias Pleroma.Activity
alias Pleroma.Builders.ActivityBuilder
+ alias Pleroma.Notification
alias Pleroma.Object
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
assert called(Pleroma.Web.Streamer.stream("participation", participations))
end
end
+
+ test "streams them out on activity creation" do
+ user_one = insert(:user)
+ user_two = insert(:user)
+
+ with_mock Pleroma.Web.Streamer,
+ stream: fn _, _ -> nil end do
+ {:ok, activity} =
+ CommonAPI.post(user_one, %{
+ "status" => "@#{user_two.nickname}",
+ "visibility" => "direct"
+ })
+
+ conversation =
+ activity.data["context"]
+ |> Pleroma.Conversation.get_for_ap_id()
+ |> Repo.preload(participations: :user)
+
+ assert called(Pleroma.Web.Streamer.stream("participation", conversation.participations))
+ end
+ end
end
describe "fetching restricted by visibility" do
{:ok, user} = ActivityPub.make_user_from_ap_id(user_id)
assert user.ap_id == user_id
assert user.nickname == "admin@mastodon.example.org"
- assert user.info.source_data
- assert user.info.ap_enabled
+ assert user.source_data
+ assert user.ap_enabled
assert user.follower_address == "http://mastodon.example.org/users/admin/followers"
end
+ test "it returns a user that is invisible" do
+ user_id = "http://mastodon.example.org/users/relay"
+ {:ok, user} = ActivityPub.make_user_from_ap_id(user_id)
+ assert User.invisible?(user)
+ end
+
test "it fetches the appropriate tag-restricted posts" do
user = insert(:user)
assert activity.actor == user.ap_id
user = User.get_cached_by_id(user.id)
- assert user.info.note_count == 0
+ assert user.note_count == 0
end
test "can be fetched into a timeline" do
})
user = User.get_cached_by_id(user.id)
- assert user.info.note_count == 2
+ assert user.note_count == 2
end
test "increases replies count" do
activity_five = insert(:note_activity)
user = insert(:user)
- {:ok, user} = User.block(user, %{ap_id: activity_five.data["actor"]})
+ {:ok, _user_relationship} = User.block(user, %{ap_id: activity_five.data["actor"]})
activities = ActivityPub.fetch_activities_for_context("2hu", %{"blocking_user" => user})
assert activities == [activity_two, activity]
activity_three = insert(:note_activity)
user = insert(:user)
booster = insert(:user)
- {:ok, user} = User.block(user, %{ap_id: activity_one.data["actor"]})
+ {:ok, _user_relationship} = User.block(user, %{ap_id: activity_one.data["actor"]})
activities =
ActivityPub.fetch_activities([], %{"blocking_user" => user, "skip_preload" => true})
assert Enum.member?(activities, activity_three)
refute Enum.member?(activities, activity_one)
- {:ok, user} = User.unblock(user, %{ap_id: activity_one.data["actor"]})
+ {:ok, _user_block} = User.unblock(user, %{ap_id: activity_one.data["actor"]})
activities =
ActivityPub.fetch_activities([], %{"blocking_user" => user, "skip_preload" => true})
assert Enum.member?(activities, activity_three)
assert Enum.member?(activities, activity_one)
- {:ok, user} = User.block(user, %{ap_id: activity_three.data["actor"]})
+ {:ok, _user_relationship} = User.block(user, %{ap_id: activity_three.data["actor"]})
{:ok, _announce, %{data: %{"id" => id}}} = CommonAPI.repeat(activity_three.id, booster)
%Activity{} = boost_activity = Activity.get_create_by_object_ap_id(id)
activity_three = Activity.get_by_id(activity_three.id)
blockee = insert(:user)
friend = insert(:user)
- {:ok, blocker} = User.block(blocker, blockee)
+ {:ok, _user_relationship} = User.block(blocker, blockee)
{:ok, activity_one} = CommonAPI.post(friend, %{"status" => "hey!"})
blockee = insert(:user)
friend = insert(:user)
- {:ok, blocker} = User.block(blocker, blockee)
+ {:ok, _user_relationship} = User.block(blocker, blockee)
{:ok, activity_one} = CommonAPI.post(friend, %{"status" => "hey!"})
refute repeat_activity in activities
end
+ test "does return activities from followed users on blocked domains" do
+ domain = "meanies.social"
+ domain_user = insert(:user, %{ap_id: "https://#{domain}/@pundit"})
+ blocker = insert(:user)
+
+ {:ok, blocker} = User.follow(blocker, domain_user)
+ {:ok, blocker} = User.block_domain(blocker, domain)
+
+ assert User.following?(blocker, domain_user)
+ assert User.blocks_domain?(blocker, domain_user)
+ refute User.blocks?(blocker, domain_user)
+
+ note = insert(:note, %{data: %{"actor" => domain_user.ap_id}})
+ activity = insert(:note_activity, %{note: note})
+
+ activities =
+ ActivityPub.fetch_activities([], %{"blocking_user" => blocker, "skip_preload" => true})
+
+ assert activity in activities
+
+ # And check that if the guy we DO follow boosts someone else from their domain,
+ # that should be hidden
+ another_user = insert(:user, %{ap_id: "https://#{domain}/@meanie2"})
+ bad_note = insert(:note, %{data: %{"actor" => another_user.ap_id}})
+ bad_activity = insert(:note_activity, %{note: bad_note})
+ {:ok, repeat_activity, _} = CommonAPI.repeat(bad_activity.id, domain_user)
+
+ activities =
+ ActivityPub.fetch_activities([], %{"blocking_user" => blocker, "skip_preload" => true})
+
+ refute repeat_activity in activities
+ end
+
test "doesn't return muted activities" do
activity_one = insert(:note_activity)
activity_two = insert(:note_activity)
activity_three = insert(:note_activity)
user = insert(:user)
booster = insert(:user)
- {:ok, user} = User.mute(user, %User{ap_id: activity_one.data["actor"]})
+
+ activity_one_actor = User.get_by_ap_id(activity_one.data["actor"])
+ {:ok, _user_relationships} = User.mute(user, activity_one_actor)
activities =
ActivityPub.fetch_activities([], %{"muting_user" => user, "skip_preload" => true})
assert Enum.member?(activities, activity_three)
assert Enum.member?(activities, activity_one)
- {:ok, user} = User.unmute(user, %User{ap_id: activity_one.data["actor"]})
+ {:ok, _user_mute} = User.unmute(user, activity_one_actor)
activities =
ActivityPub.fetch_activities([], %{"muting_user" => user, "skip_preload" => true})
assert Enum.member?(activities, activity_three)
assert Enum.member?(activities, activity_one)
- {:ok, user} = User.mute(user, %User{ap_id: activity_three.data["actor"]})
+ activity_three_actor = User.get_by_ap_id(activity_three.data["actor"])
+ {:ok, _user_relationships} = User.mute(user, activity_three_actor)
{:ok, _announce, %{data: %{"id" => id}}} = CommonAPI.repeat(activity_three.id, booster)
%Activity{} = boost_activity = Activity.get_create_by_object_ap_id(id)
activity_three = Activity.get_by_id(activity_three.id)
{:ok, announce, _object} = CommonAPI.repeat(activity_three.id, booster)
- [announce_activity] = ActivityPub.fetch_activities([user.ap_id | user.following])
+ [announce_activity] = ActivityPub.fetch_activities([user.ap_id | User.following(user)])
assert announce_activity.id == announce.id
end
end
test "retrieves a maximum of 20 activities" do
- activities = ActivityBuilder.insert_list(30)
- last_expected = List.last(activities)
+ ActivityBuilder.insert_list(10)
+ expected_activities = ActivityBuilder.insert_list(20)
activities = ActivityPub.fetch_public_activities()
- last = List.last(activities)
+ assert collect_ids(activities) == collect_ids(expected_activities)
assert length(activities) == 20
- assert last == last_expected
end
test "retrieves ids starting from a since_id" do
activities = ActivityBuilder.insert_list(30)
- later_activities = ActivityBuilder.insert_list(10)
+ expected_activities = ActivityBuilder.insert_list(10)
since_id = List.last(activities).id
- last_expected = List.last(later_activities)
activities = ActivityPub.fetch_public_activities(%{"since_id" => since_id})
- last = List.last(activities)
+ assert collect_ids(activities) == collect_ids(expected_activities)
assert length(activities) == 10
- assert last == last_expected
end
test "retrieves ids up to max_id" do
- _first_activities = ActivityBuilder.insert_list(10)
- activities = ActivityBuilder.insert_list(20)
- later_activities = ActivityBuilder.insert_list(10)
- max_id = List.first(later_activities).id
- last_expected = List.last(activities)
+ ActivityBuilder.insert_list(10)
+ expected_activities = ActivityBuilder.insert_list(20)
+
+ %{id: max_id} =
+ 10
+ |> ActivityBuilder.insert_list()
+ |> List.first()
activities = ActivityPub.fetch_public_activities(%{"max_id" => max_id})
- last = List.last(activities)
assert length(activities) == 20
- assert last == last_expected
+ assert collect_ids(activities) == collect_ids(expected_activities)
end
test "paginates via offset/limit" do
- _first_activities = ActivityBuilder.insert_list(10)
- activities = ActivityBuilder.insert_list(10)
- _later_activities = ActivityBuilder.insert_list(10)
- first_expected = List.first(activities)
+ _first_part_activities = ActivityBuilder.insert_list(10)
+ second_part_activities = ActivityBuilder.insert_list(10)
+
+ later_activities = ActivityBuilder.insert_list(10)
activities =
ActivityPub.fetch_public_activities(%{"page" => "2", "page_size" => "20"}, :offset)
- first = List.first(activities)
-
assert length(activities) == 20
- assert first == first_expected
+
+ assert collect_ids(activities) ==
+ collect_ids(second_part_activities) ++ collect_ids(later_activities)
end
test "doesn't return reblogs for users for whom reblogs have been muted" do
activity = insert(:note_activity)
user = insert(:user)
booster = insert(:user)
- {:ok, user} = CommonAPI.hide_reblogs(user, booster)
+ {:ok, _reblog_mute} = CommonAPI.hide_reblogs(user, booster)
{:ok, activity, _} = CommonAPI.repeat(activity.id, booster)
activity = insert(:note_activity)
user = insert(:user)
booster = insert(:user)
- {:ok, user} = CommonAPI.hide_reblogs(user, booster)
- {:ok, user} = CommonAPI.show_reblogs(user, booster)
+ {:ok, _reblog_mute} = CommonAPI.hide_reblogs(user, booster)
+ {:ok, _reblog_mute} = CommonAPI.show_reblogs(user, booster)
{:ok, activity, _} = CommonAPI.repeat(activity.id, booster)
end
end
+ describe "react to an object" do
+ test_with_mock "sends an activity to federation", Pleroma.Web.Federator, [:passthrough], [] do
+ Pleroma.Config.put([:instance, :federating], true)
+ user = insert(:user)
+ reactor = insert(:user)
+ {:ok, activity} = CommonAPI.post(user, %{"status" => "YASSSS queen slay"})
+ assert object = Object.normalize(activity)
+
+ {:ok, reaction_activity, _object} = ActivityPub.react_with_emoji(reactor, object, "🔥")
+
+ assert called(Pleroma.Web.Federator.publish(reaction_activity))
+ end
+
+ test "adds an emoji reaction activity to the db" do
+ user = insert(:user)
+ reactor = insert(:user)
+ {:ok, activity} = CommonAPI.post(user, %{"status" => "YASSSS queen slay"})
+ assert object = Object.normalize(activity)
+
+ {:ok, reaction_activity, object} = ActivityPub.react_with_emoji(reactor, object, "🔥")
+
+ assert reaction_activity
+
+ assert reaction_activity.data["actor"] == reactor.ap_id
+ assert reaction_activity.data["type"] == "EmojiReaction"
+ assert reaction_activity.data["content"] == "🔥"
+ assert reaction_activity.data["object"] == object.data["id"]
+ assert reaction_activity.data["to"] == [User.ap_followers(reactor), activity.data["actor"]]
+ assert reaction_activity.data["context"] == object.data["context"]
+ assert object.data["reaction_count"] == 1
+ assert object.data["reactions"]["🔥"] == [reactor.ap_id]
+ end
+ end
+
+ describe "unreacting to an object" do
+ test_with_mock "sends an activity to federation", Pleroma.Web.Federator, [:passthrough], [] do
+ Pleroma.Config.put([:instance, :federating], true)
+ user = insert(:user)
+ reactor = insert(:user)
+ {:ok, activity} = CommonAPI.post(user, %{"status" => "YASSSS queen slay"})
+ assert object = Object.normalize(activity)
+
+ {:ok, reaction_activity, _object} = ActivityPub.react_with_emoji(reactor, object, "🔥")
+
+ assert called(Pleroma.Web.Federator.publish(reaction_activity))
+
+ {:ok, unreaction_activity, _object} =
+ ActivityPub.unreact_with_emoji(reactor, reaction_activity.data["id"])
+
+ assert called(Pleroma.Web.Federator.publish(unreaction_activity))
+ end
+
+ test "adds an undo activity to the db" do
+ user = insert(:user)
+ reactor = insert(:user)
+ {:ok, activity} = CommonAPI.post(user, %{"status" => "YASSSS queen slay"})
+ assert object = Object.normalize(activity)
+
+ {:ok, reaction_activity, _object} = ActivityPub.react_with_emoji(reactor, object, "🔥")
+
+ {:ok, unreaction_activity, _object} =
+ ActivityPub.unreact_with_emoji(reactor, reaction_activity.data["id"])
+
+ assert unreaction_activity.actor == reactor.ap_id
+ assert unreaction_activity.data["object"] == reaction_activity.data["id"]
+
+ object = Object.get_by_ap_id(object.data["id"])
+ assert object.data["reaction_count"] == 0
+ assert object.data["reactions"] == %{}
+ end
+ end
+
describe "like an object" do
test_with_mock "sends an activity to federation", Pleroma.Web.Federator, [:passthrough], [] do
Pleroma.Config.put([:instance, :federating], true)
end
test "decrements user note count only for public activities" do
- user = insert(:user, info: %{note_count: 10})
+ user = insert(:user, note_count: 10)
{:ok, a1} =
CommonAPI.post(User.get_cached_by_id(user.id), %{
{:ok, _} = Object.normalize(a4) |> ActivityPub.delete()
user = User.get_cached_by_id(user.id)
- assert user.info.note_count == 10
+ assert user.note_count == 10
end
test "it creates a delete activity and checks that it is also sent to users mentioned by the deleted object" do
assert %{data: data, object: object} = Activity.get_by_ap_id_with_object(ap_id)
assert object.data["repliesCount"] == 0
end
+
+ test "it passes delete activity through MRF before deleting the object" do
+ rewrite_policy = Pleroma.Config.get([:instance, :rewrite_policy])
+ Pleroma.Config.put([:instance, :rewrite_policy], Pleroma.Web.ActivityPub.MRF.DropPolicy)
+
+ on_exit(fn -> Pleroma.Config.put([:instance, :rewrite_policy], rewrite_policy) end)
+
+ note = insert(:note_activity)
+ object = Object.normalize(note)
+
+ {:error, {:reject, _}} = ActivityPub.delete(object)
+
+ assert Activity.get_by_id(note.id)
+ assert Repo.get(Object, object.id).data["type"] == object.data["type"]
+ end
end
describe "timeline post-processing" do
})
activities =
- ActivityPub.fetch_activities([user1.ap_id | user1.following])
+ ActivityPub.fetch_activities([user1.ap_id | User.following(user1)])
|> Enum.map(fn a -> a.id end)
private_activity_1 = Activity.get_by_ap_id_with_object(private_activity_1.data["id"])
assert length(activities) == 3
activities =
- ActivityPub.fetch_activities([user1.ap_id | user1.following], %{"user" => user1})
+ ActivityPub.fetch_activities([user1.ap_id | User.following(user1)], %{"user" => user1})
|> Enum.map(fn a -> a.id end)
assert [public_activity.id, private_activity_1.id] == activities
assert 3 = length(activities)
end
- test "it can create a Flag activity" do
- reporter = insert(:user)
- target_account = insert(:user)
- {:ok, activity} = CommonAPI.post(target_account, %{"status" => "foobar"})
- context = Utils.generate_context_id()
- content = "foobar"
-
- reporter_ap_id = reporter.ap_id
- target_ap_id = target_account.ap_id
- activity_ap_id = activity.data["id"]
-
- activity_with_object = Activity.get_by_ap_id_with_object(activity_ap_id)
-
- assert {:ok, activity} =
- ActivityPub.flag(%{
- actor: reporter,
- context: context,
- account: target_account,
- statuses: [activity],
- content: content
- })
-
- note_obj = %{
- "type" => "Note",
- "id" => activity_ap_id,
- "content" => content,
- "published" => activity_with_object.object.data["published"],
- "actor" => AccountView.render("show.json", %{user: target_account})
- }
-
- assert %Activity{
- actor: ^reporter_ap_id,
- data: %{
- "type" => "Flag",
- "content" => ^content,
- "context" => ^context,
- "object" => [^target_ap_id, ^note_obj]
- }
- } = activity
+ describe "flag/1" do
+ setup do
+ reporter = insert(:user)
+ target_account = insert(:user)
+ content = "foobar"
+ {:ok, activity} = CommonAPI.post(target_account, %{"status" => content})
+ context = Utils.generate_context_id()
+
+ reporter_ap_id = reporter.ap_id
+ target_ap_id = target_account.ap_id
+ activity_ap_id = activity.data["id"]
+
+ activity_with_object = Activity.get_by_ap_id_with_object(activity_ap_id)
+
+ {:ok,
+ %{
+ reporter: reporter,
+ context: context,
+ target_account: target_account,
+ reported_activity: activity,
+ content: content,
+ activity_ap_id: activity_ap_id,
+ activity_with_object: activity_with_object,
+ reporter_ap_id: reporter_ap_id,
+ target_ap_id: target_ap_id
+ }}
+ end
+
+ test "it can create a Flag activity",
+ %{
+ reporter: reporter,
+ context: context,
+ target_account: target_account,
+ reported_activity: reported_activity,
+ content: content,
+ activity_ap_id: activity_ap_id,
+ activity_with_object: activity_with_object,
+ reporter_ap_id: reporter_ap_id,
+ target_ap_id: target_ap_id
+ } do
+ assert {:ok, activity} =
+ ActivityPub.flag(%{
+ actor: reporter,
+ context: context,
+ account: target_account,
+ statuses: [reported_activity],
+ content: content
+ })
+
+ note_obj = %{
+ "type" => "Note",
+ "id" => activity_ap_id,
+ "content" => content,
+ "published" => activity_with_object.object.data["published"],
+ "actor" => AccountView.render("show.json", %{user: target_account})
+ }
+
+ assert %Activity{
+ actor: ^reporter_ap_id,
+ data: %{
+ "type" => "Flag",
+ "content" => ^content,
+ "context" => ^context,
+ "object" => [^target_ap_id, ^note_obj]
+ }
+ } = activity
+ end
+
+ test_with_mock "strips status data from Flag, before federating it",
+ %{
+ reporter: reporter,
+ context: context,
+ target_account: target_account,
+ reported_activity: reported_activity,
+ content: content
+ },
+ Utils,
+ [:passthrough],
+ [] do
+ {:ok, activity} =
+ ActivityPub.flag(%{
+ actor: reporter,
+ context: context,
+ account: target_account,
+ statuses: [reported_activity],
+ content: content
+ })
+
+ new_data =
+ put_in(activity.data, ["object"], [target_account.ap_id, reported_activity.data["id"]])
+
+ assert_called(Utils.maybe_federate(%{activity | data: new_data}))
+ end
end
test "fetch_activities/2 returns activities addressed to a list " do
following_address: "http://localhost:4001/users/masto_closed/following"
)
- {:ok, info} = ActivityPub.fetch_follow_information_for_user(user)
- assert info.hide_followers == true
- assert info.hide_follows == false
+ {:ok, follow_info} = ActivityPub.fetch_follow_information_for_user(user)
+ assert follow_info.hide_followers == true
+ assert follow_info.hide_follows == false
end
test "detects hidden follows" do
following_address: "http://localhost:4001/users/masto_closed/following"
)
- {:ok, info} = ActivityPub.fetch_follow_information_for_user(user)
- assert info.hide_followers == false
- assert info.hide_follows == true
+ {:ok, follow_info} = ActivityPub.fetch_follow_information_for_user(user)
+ assert follow_info.hide_followers == false
+ assert follow_info.hide_follows == true
+ end
+
+ test "detects hidden follows/followers for friendica" do
+ user =
+ insert(:user,
+ local: false,
+ follower_address: "http://localhost:8080/followers/fuser3",
+ following_address: "http://localhost:8080/following/fuser3"
+ )
+
+ {:ok, follow_info} = ActivityPub.fetch_follow_information_for_user(user)
+ assert follow_info.hide_followers == true
+ assert follow_info.follower_count == 296
+ assert follow_info.following_count == 32
+ assert follow_info.hide_follows == true
+ end
+ end
+
+ describe "fetch_favourites/3" do
+ test "returns a favourite activities sorted by adds to favorite" do
+ user = insert(:user)
+ other_user = insert(:user)
+ user1 = insert(:user)
+ user2 = insert(:user)
+ {:ok, a1} = CommonAPI.post(user1, %{"status" => "bla"})
+ {:ok, _a2} = CommonAPI.post(user2, %{"status" => "traps are happy"})
+ {:ok, a3} = CommonAPI.post(user2, %{"status" => "Trees Are "})
+ {:ok, a4} = CommonAPI.post(user2, %{"status" => "Agent Smith "})
+ {:ok, a5} = CommonAPI.post(user1, %{"status" => "Red or Blue "})
+
+ {:ok, _, _} = CommonAPI.favorite(a4.id, user)
+ {:ok, _, _} = CommonAPI.favorite(a3.id, other_user)
+ Process.sleep(1000)
+ {:ok, _, _} = CommonAPI.favorite(a3.id, user)
+ {:ok, _, _} = CommonAPI.favorite(a5.id, other_user)
+ Process.sleep(1000)
+ {:ok, _, _} = CommonAPI.favorite(a5.id, user)
+ {:ok, _, _} = CommonAPI.favorite(a4.id, other_user)
+ Process.sleep(1000)
+ {:ok, _, _} = CommonAPI.favorite(a1.id, user)
+ {:ok, _, _} = CommonAPI.favorite(a1.id, other_user)
+ result = ActivityPub.fetch_favourites(user)
+
+ assert Enum.map(result, & &1.id) == [a1.id, a5.id, a3.id, a4.id]
+
+ result = ActivityPub.fetch_favourites(user, %{"limit" => 2})
+ assert Enum.map(result, & &1.id) == [a1.id, a5.id]
+ end
+ end
+
+ describe "Move activity" do
+ test "create" do
+ %{ap_id: old_ap_id} = old_user = insert(:user)
+ %{ap_id: new_ap_id} = new_user = insert(:user, also_known_as: [old_ap_id])
+ follower = insert(:user)
+ follower_move_opted_out = insert(:user, allow_following_move: false)
+
+ User.follow(follower, old_user)
+ User.follow(follower_move_opted_out, old_user)
+
+ assert User.following?(follower, old_user)
+ assert User.following?(follower_move_opted_out, old_user)
+
+ assert {:ok, activity} = ActivityPub.move(old_user, new_user)
+
+ assert %Activity{
+ actor: ^old_ap_id,
+ data: %{
+ "actor" => ^old_ap_id,
+ "object" => ^old_ap_id,
+ "target" => ^new_ap_id,
+ "type" => "Move"
+ },
+ local: true
+ } = activity
+
+ params = %{
+ "op" => "move_following",
+ "origin_id" => old_user.id,
+ "target_id" => new_user.id
+ }
+
+ assert_enqueued(worker: Pleroma.Workers.BackgroundWorker, args: params)
+
+ Pleroma.Workers.BackgroundWorker.perform(params, nil)
+
+ refute User.following?(follower, old_user)
+ assert User.following?(follower, new_user)
+
+ assert User.following?(follower_move_opted_out, old_user)
+ refute User.following?(follower_move_opted_out, new_user)
+
+ activity = %Activity{activity | object: nil}
+
+ assert [%Notification{activity: ^activity}] =
+ Notification.for_user(follower, %{with_move: true})
+
+ assert [%Notification{activity: ^activity}] =
+ Notification.for_user(follower_move_opted_out, %{with_move: true})
+ end
+
+ test "old user must be in the new user's `also_known_as` list" do
+ old_user = insert(:user)
+ new_user = insert(:user)
+
+ assert {:error, "Target account must have the origin in `alsoKnownAs`"} =
+ ActivityPub.move(old_user, new_user)
end
end
end
projects / akkoma / blobdiff