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	diff --git a/lib/pleroma/instances/instance.ex b/lib/pleroma/instances/instance.ex
	index a87590d8b..4a4ca26dd 100644
	--- a/lib/pleroma/instances/instance.ex
	+++ b/lib/pleroma/instances/instance.ex
	@@ -1,102 +1,113 @@
	defmodule Pleroma.Instances.Instance do
	@moduledoc "Instance."

	alias Pleroma.Instances
	alias Pleroma.Instances.Instance

	use Ecto.Schema

	import Ecto.{Query, Changeset}

	alias Pleroma.Repo

	schema "instances" do
	field(:host, :string)
	field(:unreachable_since, :naive_datetime)

	timestamps()
	end

	defdelegate host(url_or_host), to: Instances

	def changeset(struct, params \\ %{}) do
	struct
	\|> cast(params, [:host, :unreachable_since])
	\|> validate_required([:host])
	\|> unique_constraint(:host)
	end

	- def filter_reachable([]), do: []
	+ def filter_reachable([]), do: %{}

	def filter_reachable(urls_or_hosts) when is_list(urls_or_hosts) do
	hosts =
	urls_or_hosts
	\|> Enum.map(&(&1 && host(&1)))
	\|> Enum.filter(&(to_string(&1) != ""))

	- unreachable_hosts =
	+ unreachable_since_by_host =
	Repo.all(
	from(i in Instance,
	- where:
	- i.host in ^hosts and
	- i.unreachable_since <= ^Instances.reachability_datetime_threshold(),
	- select: i.host
	+ where: i.host in ^hosts,
	+ select: {i.host, i.unreachable_since}
	)
	)
	+ \|> Map.new(& &1)

	- Enum.filter(urls_or_hosts, &(&1 && host(&1) not in unreachable_hosts))
	+ reachability_datetime_threshold = Instances.reachability_datetime_threshold()
	+
	+ for entry <- Enum.filter(urls_or_hosts, &is_binary/1) do
	+ host = host(entry)
	+ unreachable_since = unreachable_since_by_host[host]
	+
	+ if !unreachable_since \|\|
	+ NaiveDateTime.compare(unreachable_since, reachability_datetime_threshold) == :gt do
	+ {entry, unreachable_since}
	+ end
	+ end
	+ \|> Enum.filter(& &1)
	+ \|> Map.new(& &1)
	end

	def reachable?(url_or_host) when is_binary(url_or_host) do
	!Repo.one(
	from(i in Instance,
	where:
	i.host == ^host(url_or_host) and
	i.unreachable_since <= ^Instances.reachability_datetime_threshold(),
	select: true
	)
	)
	end

	def reachable?(_), do: true

	def set_reachable(url_or_host) when is_binary(url_or_host) do
	with host <- host(url_or_host),
	%Instance{} = existing_record <- Repo.get_by(Instance, %{host: host}) do
	{:ok, _instance} =
	existing_record
	\|> changeset(%{unreachable_since: nil})
	\|> Repo.update()
	end
	end

	def set_reachable(_), do: {:error, nil}

	def set_unreachable(url_or_host, unreachable_since \\ nil)

	def set_unreachable(url_or_host, unreachable_since) when is_binary(url_or_host) do
	unreachable_since = unreachable_since \|\| DateTime.utc_now()
	host = host(url_or_host)
	existing_record = Repo.get_by(Instance, %{host: host})

	changes = %{unreachable_since: unreachable_since}

	cond do
	is_nil(existing_record) ->
	%Instance{}
	\|> changeset(Map.put(changes, :host, host))
	\|> Repo.insert()

	existing_record.unreachable_since &&
	NaiveDateTime.compare(existing_record.unreachable_since, unreachable_since) != :gt ->
	{:ok, existing_record}

	true ->
	existing_record
	\|> changeset(changes)
	\|> Repo.update()
	end
	end

	def set_unreachable(_, _), do: {:error, nil}
	end
	diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
	index 06e8c3f1c..4635e7fcd 100644
	--- a/lib/pleroma/web/activity_pub/activity_pub.ex
	+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
	@@ -1,922 +1,925 @@
	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Web.ActivityPub.ActivityPub do
	alias Pleroma.{Activity, Repo, Object, Upload, User, Notification, Instances}
	alias Pleroma.Web.ActivityPub.{Transmogrifier, MRF}
	alias Pleroma.Web.WebFinger
	alias Pleroma.Web.Federator
	alias Pleroma.Web.OStatus
	import Ecto.Query
	import Pleroma.Web.ActivityPub.Utils
	require Logger

	@httpoison Application.get_env(:pleroma, :httpoison)

	# For Announce activities, we filter the recipients based on following status for any actors
	# that match actual users. See issue #164 for more information about why this is necessary.
	defp get_recipients(%{"type" => "Announce"} = data) do
	to = data["to"] \|\| []
	cc = data["cc"] \|\| []
	recipients = to ++ cc
	actor = User.get_cached_by_ap_id(data["actor"])

	recipients
	\|> Enum.filter(fn recipient ->
	case User.get_cached_by_ap_id(recipient) do
	nil ->
	true

	user ->
	User.following?(user, actor)
	end
	end)

	{recipients, to, cc}
	end

	defp get_recipients(%{"type" => "Create"} = data) do
	to = data["to"] \|\| []
	cc = data["cc"] \|\| []
	actor = data["actor"] \|\| []
	recipients = (to ++ cc ++ [actor]) \|> Enum.uniq()
	{recipients, to, cc}
	end

	defp get_recipients(data) do
	to = data["to"] \|\| []
	cc = data["cc"] \|\| []
	recipients = to ++ cc
	{recipients, to, cc}
	end

	defp check_actor_is_active(actor) do
	if not is_nil(actor) do
	with user <- User.get_cached_by_ap_id(actor),
	false <- user.info.deactivated do
	:ok
	else
	_e -> :reject
	end
	else
	:ok
	end
	end

	defp check_remote_limit(%{"object" => %{"content" => content}}) when not is_nil(content) do
	limit = Pleroma.Config.get([:instance, :remote_limit])
	String.length(content) <= limit
	end

	defp check_remote_limit(_), do: true

	def insert(map, local \\ true) when is_map(map) do
	with nil <- Activity.normalize(map),
	map <- lazy_put_activity_defaults(map),
	:ok <- check_actor_is_active(map["actor"]),
	{_, true} <- {:remote_limit_error, check_remote_limit(map)},
	{:ok, map} <- MRF.filter(map),
	:ok <- insert_full_object(map) do
	{recipients, _, _} = get_recipients(map)

	{:ok, activity} =
	Repo.insert(%Activity{
	data: map,
	local: local,
	actor: map["actor"],
	recipients: recipients
	})

	Task.start(fn ->
	Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
	end)

	Notification.create_notifications(activity)
	stream_out(activity)
	{:ok, activity}
	else
	%Activity{} = activity -> {:ok, activity}
	error -> {:error, error}
	end
	end

	def stream_out(activity) do
	public = "https://www.w3.org/ns/activitystreams#Public"

	if activity.data["type"] in ["Create", "Announce", "Delete"] do
	Pleroma.Web.Streamer.stream("user", activity)
	Pleroma.Web.Streamer.stream("list", activity)

	if Enum.member?(activity.data["to"], public) do
	Pleroma.Web.Streamer.stream("public", activity)

	if activity.local do
	Pleroma.Web.Streamer.stream("public:local", activity)
	end

	if activity.data["type"] in ["Create"] do
	activity.data["object"]
	\|> Map.get("tag", [])
	\|> Enum.filter(fn tag -> is_bitstring(tag) end)
	\|> Enum.map(fn tag -> Pleroma.Web.Streamer.stream("hashtag:" <> tag, activity) end)

	if activity.data["object"]["attachment"] != [] do
	Pleroma.Web.Streamer.stream("public:media", activity)

	if activity.local do
	Pleroma.Web.Streamer.stream("public:local:media", activity)
	end
	end
	end
	else
	if !Enum.member?(activity.data["cc"] \|\| [], public) &&
	!Enum.member?(
	activity.data["to"],
	User.get_by_ap_id(activity.data["actor"]).follower_address
	),
	do: Pleroma.Web.Streamer.stream("direct", activity)
	end
	end
	end

	def create(%{to: to, actor: actor, context: context, object: object} = params) do
	additional = params[:additional] \|\| %{}
	# only accept false as false value
	local = !(params[:local] == false)
	published = params[:published]

	with create_data <-
	make_create_data(
	%{to: to, actor: actor, published: published, context: context, object: object},
	additional
	),
	{:ok, activity} <- insert(create_data, local),
	# Changing note count prior to enqueuing federation task in order to avoid race conditions on updating user.info
	{:ok, _actor} <- User.increase_note_count(actor),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	def accept(%{to: to, actor: actor, object: object} = params) do
	# only accept false as false value
	local = !(params[:local] == false)

	with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
	{:ok, activity} <- insert(data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	def reject(%{to: to, actor: actor, object: object} = params) do
	# only accept false as false value
	local = !(params[:local] == false)

	with data <- %{"to" => to, "type" => "Reject", "actor" => actor, "object" => object},
	{:ok, activity} <- insert(data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
	# only accept false as false value
	local = !(params[:local] == false)

	with data <- %{
	"to" => to,
	"cc" => cc,
	"type" => "Update",
	"actor" => actor,
	"object" => object
	},
	{:ok, activity} <- insert(data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	# TODO: This is weird, maybe we shouldn't check here if we can make the activity.
	def like(
	%User{ap_id: ap_id} = user,
	%Object{data: %{"id" => _}} = object,
	activity_id \\ nil,
	local \\ true
	) do
	with nil <- get_existing_like(ap_id, object),
	like_data <- make_like_data(user, object, activity_id),
	{:ok, activity} <- insert(like_data, local),
	{:ok, object} <- add_like_to_object(activity, object),
	:ok <- maybe_federate(activity) do
	{:ok, activity, object}
	else
	%Activity{} = activity -> {:ok, activity, object}
	error -> {:error, error}
	end
	end

	def unlike(
	%User{} = actor,
	%Object{} = object,
	activity_id \\ nil,
	local \\ true
	) do
	with %Activity{} = like_activity <- get_existing_like(actor.ap_id, object),
	unlike_data <- make_unlike_data(actor, like_activity, activity_id),
	{:ok, unlike_activity} <- insert(unlike_data, local),
	{:ok, _activity} <- Repo.delete(like_activity),
	{:ok, object} <- remove_like_from_object(like_activity, object),
	:ok <- maybe_federate(unlike_activity) do
	{:ok, unlike_activity, like_activity, object}
	else
	_e -> {:ok, object}
	end
	end

	def announce(
	%User{ap_id: _} = user,
	%Object{data: %{"id" => _}} = object,
	activity_id \\ nil,
	local \\ true,
	public \\ true
	) do
	with true <- is_public?(object),
	announce_data <- make_announce_data(user, object, activity_id, public),
	{:ok, activity} <- insert(announce_data, local),
	{:ok, object} <- add_announce_to_object(activity, object),
	:ok <- maybe_federate(activity) do
	{:ok, activity, object}
	else
	error -> {:error, error}
	end
	end

	def unannounce(
	%User{} = actor,
	%Object{} = object,
	activity_id \\ nil,
	local \\ true
	) do
	with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
	unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
	{:ok, unannounce_activity} <- insert(unannounce_data, local),
	:ok <- maybe_federate(unannounce_activity),
	{:ok, _activity} <- Repo.delete(announce_activity),
	{:ok, object} <- remove_announce_from_object(announce_activity, object) do
	{:ok, unannounce_activity, object}
	else
	_e -> {:ok, object}
	end
	end

	def follow(follower, followed, activity_id \\ nil, local \\ true) do
	with data <- make_follow_data(follower, followed, activity_id),
	{:ok, activity} <- insert(data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
	with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
	{:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
	unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
	{:ok, activity} <- insert(unfollow_data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
	user = User.get_cached_by_ap_id(actor)

	data = %{
	"type" => "Delete",
	"actor" => actor,
	"object" => id,
	"to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
	}

	with {:ok, _} <- Object.delete(object),
	{:ok, activity} <- insert(data, local),
	# Changing note count prior to enqueuing federation task in order to avoid race conditions on updating user.info
	{:ok, _actor} <- User.decrease_note_count(user),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	def block(blocker, blocked, activity_id \\ nil, local \\ true) do
	ap_config = Application.get_env(:pleroma, :activitypub)
	unfollow_blocked = Keyword.get(ap_config, :unfollow_blocked)
	outgoing_blocks = Keyword.get(ap_config, :outgoing_blocks)

	with true <- unfollow_blocked do
	follow_activity = fetch_latest_follow(blocker, blocked)

	if follow_activity do
	unfollow(blocker, blocked, nil, local)
	end
	end

	with true <- outgoing_blocks,
	block_data <- make_block_data(blocker, blocked, activity_id),
	{:ok, activity} <- insert(block_data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	else
	_e -> {:ok, nil}
	end
	end

	def unblock(blocker, blocked, activity_id \\ nil, local \\ true) do
	with %Activity{} = block_activity <- fetch_latest_block(blocker, blocked),
	unblock_data <- make_unblock_data(blocker, blocked, block_activity, activity_id),
	{:ok, activity} <- insert(unblock_data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	def fetch_activities_for_context(context, opts \\ %{}) do
	public = ["https://www.w3.org/ns/activitystreams#Public"]

	recipients =
	if opts["user"], do: [opts["user"].ap_id \| opts["user"].following] ++ public, else: public

	query = from(activity in Activity)

	query =
	query
	\|> restrict_blocked(opts)
	\|> restrict_recipients(recipients, opts["user"])

	query =
	from(
	activity in query,
	where:
	fragment(
	"?->>'type' = ? and ?->>'context' = ?",
	activity.data,
	"Create",
	activity.data,
	^context
	),
	order_by: [desc: :id]
	)

	Repo.all(query)
	end

	def fetch_public_activities(opts \\ %{}) do
	q = fetch_activities_query(["https://www.w3.org/ns/activitystreams#Public"], opts)

	q
	\|> restrict_unlisted()
	\|> Repo.all()
	\|> Enum.reverse()
	end

	@valid_visibilities ~w[direct unlisted public private]

	defp restrict_visibility(query, %{visibility: visibility})
	when visibility in @valid_visibilities do
	query =
	from(
	a in query,
	where:
	fragment("activity_visibility(?, ?, ?) = ?", a.actor, a.recipients, a.data, ^visibility)
	)

	Ecto.Adapters.SQL.to_sql(:all, Repo, query)

	query
	end

	defp restrict_visibility(_query, %{visibility: visibility})
	when visibility not in @valid_visibilities do
	Logger.error("Could not restrict visibility to #{visibility}")
	end

	defp restrict_visibility(query, _visibility), do: query

	def fetch_user_activities(user, reading_user, params \\ %{}) do
	params =
	params
	\|> Map.put("type", ["Create", "Announce"])
	\|> Map.put("actor_id", user.ap_id)
	\|> Map.put("whole_db", true)
	\|> Map.put("pinned_activity_ids", user.info.pinned_activities)

	recipients =
	if reading_user do
	["https://www.w3.org/ns/activitystreams#Public"] ++
	[reading_user.ap_id \| reading_user.following]
	else
	["https://www.w3.org/ns/activitystreams#Public"]
	end

	fetch_activities(recipients, params)
	\|> Enum.reverse()
	end

	defp restrict_since(query, %{"since_id" => ""}), do: query

	defp restrict_since(query, %{"since_id" => since_id}) do
	from(activity in query, where: activity.id > ^since_id)
	end

	defp restrict_since(query, _), do: query

	defp restrict_tag_reject(query, %{"tag_reject" => tag_reject})
	when is_list(tag_reject) and tag_reject != [] do
	from(
	activity in query,
	where: fragment("(not (? #> '{\"object\",\"tag\"}') \\?\| ?)", activity.data, ^tag_reject)
	)
	end

	defp restrict_tag_reject(query, _), do: query

	defp restrict_tag_all(query, %{"tag_all" => tag_all})
	when is_list(tag_all) and tag_all != [] do
	from(
	activity in query,
	where: fragment("(? #> '{\"object\",\"tag\"}') \\?& ?", activity.data, ^tag_all)
	)
	end

	defp restrict_tag_all(query, _), do: query

	defp restrict_tag(query, %{"tag" => tag}) when is_list(tag) do
	from(
	activity in query,
	where: fragment("(? #> '{\"object\",\"tag\"}') \\?\| ?", activity.data, ^tag)
	)
	end

	defp restrict_tag(query, %{"tag" => tag}) when is_binary(tag) do
	from(
	activity in query,
	where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
	)
	end

	defp restrict_tag(query, _), do: query

	defp restrict_to_cc(query, recipients_to, recipients_cc) do
	from(
	activity in query,
	where:
	fragment(
	"(?->'to' \\?\| ?) or (?->'cc' \\?\| ?)",
	activity.data,
	^recipients_to,
	activity.data,
	^recipients_cc
	)
	)
	end

	defp restrict_recipients(query, [], _user), do: query

	defp restrict_recipients(query, recipients, nil) do
	from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
	end

	defp restrict_recipients(query, recipients, user) do
	from(
	activity in query,
	where: fragment("? && ?", ^recipients, activity.recipients),
	or_where: activity.actor == ^user.ap_id
	)
	end

	defp restrict_limit(query, %{"limit" => limit}) do
	from(activity in query, limit: ^limit)
	end

	defp restrict_limit(query, _), do: query

	defp restrict_local(query, %{"local_only" => true}) do
	from(activity in query, where: activity.local == true)
	end

	defp restrict_local(query, _), do: query

	defp restrict_max(query, %{"max_id" => ""}), do: query

	defp restrict_max(query, %{"max_id" => max_id}) do
	from(activity in query, where: activity.id < ^max_id)
	end

	defp restrict_max(query, _), do: query

	defp restrict_actor(query, %{"actor_id" => actor_id}) do
	from(activity in query, where: activity.actor == ^actor_id)
	end

	defp restrict_actor(query, _), do: query

	defp restrict_type(query, %{"type" => type}) when is_binary(type) do
	restrict_type(query, %{"type" => [type]})
	end

	defp restrict_type(query, %{"type" => type}) do
	from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
	end

	defp restrict_type(query, _), do: query

	defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
	from(
	activity in query,
	where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
	)
	end

	defp restrict_favorited_by(query, _), do: query

	defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
	from(
	activity in query,
	where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[])
	)
	end

	defp restrict_media(query, _), do: query

	defp restrict_replies(query, %{"exclude_replies" => val}) when val == "true" or val == "1" do
	from(
	activity in query,
	where: fragment("?->'object'->>'inReplyTo' is null", activity.data)
	)
	end

	defp restrict_replies(query, _), do: query

	defp restrict_reblogs(query, %{"exclude_reblogs" => val}) when val == "true" or val == "1" do
	from(activity in query, where: fragment("?->>'type' != 'Announce'", activity.data))
	end

	defp restrict_reblogs(query, _), do: query

	defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
	blocks = info.blocks \|\| []
	domain_blocks = info.domain_blocks \|\| []

	from(
	activity in query,
	where: fragment("not (? = ANY(?))", activity.actor, ^blocks),
	where: fragment("not (?->'to' \\?\| ?)", activity.data, ^blocks),
	where: fragment("not (split_part(?, '/', 3) = ANY(?))", activity.actor, ^domain_blocks)
	)
	end

	defp restrict_blocked(query, _), do: query

	defp restrict_unlisted(query) do
	from(
	activity in query,
	where:
	fragment(
	"not (coalesce(?->'cc', '{}'::jsonb) \\?\| ?)",
	activity.data,
	^["https://www.w3.org/ns/activitystreams#Public"]
	)
	)
	end

	defp restrict_pinned(query, %{"pinned" => "true", "pinned_activity_ids" => ids}) do
	from(activity in query, where: activity.id in ^ids)
	end

	defp restrict_pinned(query, _), do: query

	def fetch_activities_query(recipients, opts \\ %{}) do
	base_query =
	from(
	activity in Activity,
	limit: 20,
	order_by: [fragment("? desc nulls last", activity.id)]
	)

	base_query
	\|> restrict_recipients(recipients, opts["user"])
	\|> restrict_tag(opts)
	\|> restrict_tag_reject(opts)
	\|> restrict_tag_all(opts)
	\|> restrict_since(opts)
	\|> restrict_local(opts)
	\|> restrict_limit(opts)
	\|> restrict_max(opts)
	\|> restrict_actor(opts)
	\|> restrict_type(opts)
	\|> restrict_favorited_by(opts)
	\|> restrict_blocked(opts)
	\|> restrict_media(opts)
	\|> restrict_visibility(opts)
	\|> restrict_replies(opts)
	\|> restrict_reblogs(opts)
	\|> restrict_pinned(opts)
	end

	def fetch_activities(recipients, opts \\ %{}) do
	fetch_activities_query(recipients, opts)
	\|> Repo.all()
	\|> Enum.reverse()
	end

	def fetch_activities_bounded(recipients_to, recipients_cc, opts \\ %{}) do
	fetch_activities_query([], opts)
	\|> restrict_to_cc(recipients_to, recipients_cc)
	\|> Repo.all()
	\|> Enum.reverse()
	end

	def upload(file, opts \\ []) do
	with {:ok, data} <- Upload.store(file, opts) do
	obj_data =
	if opts[:actor] do
	Map.put(data, "actor", opts[:actor])
	else
	data
	end

	Repo.insert(%Object{data: obj_data})
	end
	end

	def user_data_from_user_object(data) do
	avatar =
	data["icon"]["url"] &&
	%{
	"type" => "Image",
	"url" => [%{"href" => data["icon"]["url"]}]
	}

	banner =
	data["image"]["url"] &&
	%{
	"type" => "Image",
	"url" => [%{"href" => data["image"]["url"]}]
	}

	locked = data["manuallyApprovesFollowers"] \|\| false
	data = Transmogrifier.maybe_fix_user_object(data)

	user_data = %{
	ap_id: data["id"],
	info: %{
	"ap_enabled" => true,
	"source_data" => data,
	"banner" => banner,
	"locked" => locked
	},
	avatar: avatar,
	name: data["name"],
	follower_address: data["followers"],
	bio: data["summary"]
	}

	# nickname can be nil because of virtual actors
	user_data =
	if data["preferredUsername"] do
	Map.put(
	user_data,
	:nickname,
	"#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}"
	)
	else
	Map.put(user_data, :nickname, nil)
	end

	{:ok, user_data}
	end

	def fetch_and_prepare_user_from_ap_id(ap_id) do
	with {:ok, data} <- fetch_and_contain_remote_object_from_id(ap_id) do
	user_data_from_user_object(data)
	else
	e -> Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
	end
	end

	def make_user_from_ap_id(ap_id) do
	if _user = User.get_by_ap_id(ap_id) do
	Transmogrifier.upgrade_user_from_ap_id(ap_id)
	else
	with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
	User.insert_or_update_user(data)
	else
	e -> {:error, e}
	end
	end
	end

	def make_user_from_nickname(nickname) do
	with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
	make_user_from_ap_id(ap_id)
	else
	_e -> {:error, "No AP id in WebFinger"}
	end
	end

	def should_federate?(inbox, public) do
	if public do
	true
	else
	inbox_info = URI.parse(inbox)
	!Enum.member?(Pleroma.Config.get([:instance, :quarantined_instances], []), inbox_info.host)
	end
	end

	def publish(actor, activity) do
	remote_followers =
	if actor.follower_address in activity.recipients do
	{:ok, followers} = User.get_followers(actor)
	followers \|> Enum.filter(&(!&1.local))
	else
	[]
	end

	public = is_public?(activity)

	- remote_inboxes =
	+ reachable_inboxes_metadata =
	(Pleroma.Web.Salmon.remote_users(activity) ++ remote_followers)
	\|> Enum.filter(fn user -> User.ap_enabled?(user) end)
	\|> Enum.map(fn %{info: %{source_data: data}} ->
	(is_map(data["endpoints"]) && Map.get(data["endpoints"], "sharedInbox")) \|\| data["inbox"]
	end)
	\|> Enum.uniq()
	\|> Enum.filter(fn inbox -> should_federate?(inbox, public) end)
	\|> Instances.filter_reachable()

	{:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
	json = Jason.encode!(data)

	- Enum.each(remote_inboxes, fn inbox ->
	+ Enum.each(reachable_inboxes_metadata, fn {inbox, unreachable_since} ->
	Federator.enqueue(:publish_single_ap, %{
	inbox: inbox,
	json: json,
	actor: actor,
	- id: activity.data["id"]
	+ id: activity.data["id"],
	+ unreachable_since: unreachable_since
	})
	end)
	end

	- def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
	+ def publish_one(%{inbox: inbox, json: json, actor: actor, id: id} = params) do
	Logger.info("Federating #{id} to #{inbox}")
	host = URI.parse(inbox).host

	digest = "SHA-256=" <> (:crypto.hash(:sha256, json) \|> Base.encode64())

	signature =
	Pleroma.Web.HTTPSignatures.sign(actor, %{
	host: host,
	"content-length": byte_size(json),
	digest: digest
	})

	with {:ok, %{status: code}} when code in 200..299 <-
	result =
	@httpoison.post(
	inbox,
	json,
	[
	{"Content-Type", "application/activity+json"},
	{"signature", signature},
	{"digest", digest}
	]
	) do
	- Instances.set_reachable(inbox)
	+ if !Map.has_key?(params, :unreachable_since) \|\| params[:unreachable_since],
	+ do: Instances.set_reachable(inbox)
	+
	result
	else
	{_post_result, response} ->
	- Instances.set_unreachable(inbox)
	+ unless params[:unreachable_since], do: Instances.set_unreachable(inbox)
	{:error, response}
	end
	end

	# TODO:
	# This will create a Create activity, which we need internally at the moment.
	def fetch_object_from_id(id) do
	if object = Object.get_cached_by_ap_id(id) do
	{:ok, object}
	else
	Logger.info("Fetching #{id} via AP")

	with {:ok, data} <- fetch_and_contain_remote_object_from_id(id),
	nil <- Object.normalize(data),
	params <- %{
	"type" => "Create",
	"to" => data["to"],
	"cc" => data["cc"],
	"actor" => data["actor"] \|\| data["attributedTo"],
	"object" => data
	},
	:ok <- Transmogrifier.contain_origin(id, params),
	{:ok, activity} <- Transmogrifier.handle_incoming(params) do
	{:ok, Object.normalize(activity.data["object"])}
	else
	{:error, {:reject, nil}} ->
	{:reject, nil}

	object = %Object{} ->
	{:ok, object}

	_e ->
	Logger.info("Couldn't get object via AP, trying out OStatus fetching...")

	case OStatus.fetch_activity_from_url(id) do
	{:ok, [activity \| _]} -> {:ok, Object.normalize(activity.data["object"])}
	e -> e
	end
	end
	end
	end

	def fetch_and_contain_remote_object_from_id(id) do
	Logger.info("Fetching #{id} via AP")

	with true <- String.starts_with?(id, "http"),
	{:ok, %{body: body, status: code}} when code in 200..299 <-
	@httpoison.get(
	id,
	[{:Accept, "application/activity+json"}]
	),
	{:ok, data} <- Jason.decode(body),
	:ok <- Transmogrifier.contain_origin_from_id(id, data) do
	{:ok, data}
	else
	e ->
	{:error, e}
	end
	end

	def is_public?(%Object{data: %{"type" => "Tombstone"}}), do: false
	def is_public?(%Object{data: data}), do: is_public?(data)
	def is_public?(%Activity{data: data}), do: is_public?(data)
	def is_public?(%{"directMessage" => true}), do: false

	def is_public?(data) do
	"https://www.w3.org/ns/activitystreams#Public" in (data["to"] ++ (data["cc"] \|\| []))
	end

	def is_private?(activity) do
	!is_public?(activity) && Enum.any?(activity.data["to"], &String.contains?(&1, "/followers"))
	end

	def is_direct?(%Activity{data: %{"directMessage" => true}}), do: true
	def is_direct?(%Object{data: %{"directMessage" => true}}), do: true

	def is_direct?(activity) do
	!is_public?(activity) && !is_private?(activity)
	end

	def visible_for_user?(activity, nil) do
	is_public?(activity)
	end

	def visible_for_user?(activity, user) do
	x = [user.ap_id \| user.following]
	y = activity.data["to"] ++ (activity.data["cc"] \|\| [])
	visible_for_user?(activity, nil) \|\| Enum.any?(x, &(&1 in y))
	end

	# guard
	def entire_thread_visible_for_user?(nil, _user), do: false

	# child
	def entire_thread_visible_for_user?(
	%Activity{data: %{"object" => %{"inReplyTo" => parent_id}}} = tail,
	user
	)
	when is_binary(parent_id) do
	parent = Activity.get_in_reply_to_activity(tail)
	visible_for_user?(tail, user) && entire_thread_visible_for_user?(parent, user)
	end

	# root
	def entire_thread_visible_for_user?(tail, user), do: visible_for_user?(tail, user)

	# filter out broken threads
	def contain_broken_threads(%Activity{} = activity, %User{} = user) do
	entire_thread_visible_for_user?(activity, user)
	end

	# do post-processing on a specific activity
	def contain_activity(%Activity{} = activity, %User{} = user) do
	contain_broken_threads(activity, user)
	end

	# do post-processing on a timeline
	def contain_timeline(timeline, user) do
	timeline
	\|> Enum.filter(fn activity ->
	contain_activity(activity, user)
	end)
	end
	end
	diff --git a/lib/pleroma/web/federator/federator.ex b/lib/pleroma/web/federator/federator.ex
	index 46f7a4973..bb7676cf0 100644
	--- a/lib/pleroma/web/federator/federator.ex
	+++ b/lib/pleroma/web/federator/federator.ex
	@@ -1,232 +1,232 @@
	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Web.Federator do
	use GenServer
	alias Pleroma.User
	alias Pleroma.Activity
	alias Pleroma.Web.{WebFinger, Websub, Salmon}
	alias Pleroma.Web.Federator.RetryQueue
	alias Pleroma.Web.ActivityPub.ActivityPub
	alias Pleroma.Web.ActivityPub.Relay
	alias Pleroma.Web.ActivityPub.Transmogrifier
	alias Pleroma.Web.ActivityPub.Utils
	alias Pleroma.Web.OStatus
	require Logger

	@websub Application.get_env(:pleroma, :websub)
	@ostatus Application.get_env(:pleroma, :ostatus)

	def init(args) do
	{:ok, args}
	end

	def start_link do
	spawn(fn ->
	# 1 minute
	Process.sleep(1000 * 60 * 1)
	enqueue(:refresh_subscriptions, nil)
	end)

	GenServer.start_link(
	__MODULE__,
	%{
	in: {:sets.new(), []},
	out: {:sets.new(), []}
	},
	name: __MODULE__
	)
	end

	def handle(:refresh_subscriptions, _) do
	Logger.debug("Federator running refresh subscriptions")
	Websub.refresh_subscriptions()

	spawn(fn ->
	# 6 hours
	Process.sleep(1000 * 60 * 60 * 6)
	enqueue(:refresh_subscriptions, nil)
	end)
	end

	def handle(:request_subscription, websub) do
	Logger.debug("Refreshing #{websub.topic}")

	with {:ok, websub} <- Websub.request_subscription(websub) do
	Logger.debug("Successfully refreshed #{websub.topic}")
	else
	_e -> Logger.debug("Couldn't refresh #{websub.topic}")
	end
	end

	def handle(:publish, activity) do
	Logger.debug(fn -> "Running publish for #{activity.data["id"]}" end)

	with actor when not is_nil(actor) <- User.get_cached_by_ap_id(activity.data["actor"]) do
	{:ok, actor} = WebFinger.ensure_keys_present(actor)

	if ActivityPub.is_public?(activity) do
	if OStatus.is_representable?(activity) do
	Logger.info(fn -> "Sending #{activity.data["id"]} out via WebSub" end)
	Websub.publish(Pleroma.Web.OStatus.feed_path(actor), actor, activity)

	Logger.info(fn -> "Sending #{activity.data["id"]} out via Salmon" end)
	Pleroma.Web.Salmon.publish(actor, activity)
	end

	if Keyword.get(Application.get_env(:pleroma, :instance), :allow_relay) do
	Logger.info(fn -> "Relaying #{activity.data["id"]} out" end)
	Relay.publish(activity)
	end
	end

	Logger.info(fn -> "Sending #{activity.data["id"]} out via AP" end)
	Pleroma.Web.ActivityPub.ActivityPub.publish(actor, activity)
	end
	end

	def handle(:verify_websub, websub) do
	Logger.debug(fn ->
	"Running WebSub verification for #{websub.id} (#{websub.topic}, #{websub.callback})"
	end)

	@websub.verify(websub)
	end

	def handle(:incoming_doc, doc) do
	Logger.info("Got document, trying to parse")
	@ostatus.handle_incoming(doc)
	end

	def handle(:incoming_ap_doc, params) do
	Logger.info("Handling incoming AP activity")

	params = Utils.normalize_params(params)

	# NOTE: we use the actor ID to do the containment, this is fine because an
	# actor shouldn't be acting on objects outside their own AP server.
	with {:ok, _user} <- ap_enabled_actor(params["actor"]),
	nil <- Activity.normalize(params["id"]),
	:ok <- Transmogrifier.contain_origin_from_id(params["actor"], params),
	{:ok, activity} <- Transmogrifier.handle_incoming(params) do
	{:ok, activity}
	else
	%Activity{} ->
	Logger.info("Already had #{params["id"]}")
	:error

	_e ->
	# Just drop those for now
	Logger.info("Unhandled activity")
	Logger.info(Poison.encode!(params, pretty: 2))
	:error
	end
	end

	- def handle(:publish_single_salmon, {user_or_url, feed, poster}) do
	- Salmon.send_to_user(user_or_url, feed, poster)
	+ def handle(:publish_single_salmon, params) do
	+ Salmon.send_to_user(params)
	end

	def handle(:publish_single_ap, params) do
	case ActivityPub.publish_one(params) do
	{:ok, _} ->
	:ok

	{:error, _} ->
	RetryQueue.enqueue(params, ActivityPub)
	end
	end

	def handle(
	:publish_single_websub,
	%{xml: _xml, topic: _topic, callback: _callback, secret: _secret} = params
	) do
	case Websub.publish_one(params) do
	{:ok, _} ->
	:ok

	{:error, _} ->
	RetryQueue.enqueue(params, Websub)
	end
	end

	def handle(type, _) do
	Logger.debug(fn -> "Unknown task: #{type}" end)
	{:error, "Don't know what to do with this"}
	end

	if Mix.env() == :test do
	def enqueue(type, payload, _priority \\ 1) do
	if Pleroma.Config.get([:instance, :federating]) do
	handle(type, payload)
	end
	end
	else
	def enqueue(type, payload, priority \\ 1) do
	if Pleroma.Config.get([:instance, :federating]) do
	GenServer.cast(__MODULE__, {:enqueue, type, payload, priority})
	end
	end
	end

	def maybe_start_job(running_jobs, queue) do
	if :sets.size(running_jobs) < Pleroma.Config.get([__MODULE__, :max_jobs]) && queue != [] do
	{{type, payload}, queue} = queue_pop(queue)
	{:ok, pid} = Task.start(fn -> handle(type, payload) end)
	mref = Process.monitor(pid)
	{:sets.add_element(mref, running_jobs), queue}
	else
	{running_jobs, queue}
	end
	end

	def handle_cast({:enqueue, type, payload, _priority}, state)
	when type in [:incoming_doc, :incoming_ap_doc] do
	%{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}} = state
	i_queue = enqueue_sorted(i_queue, {type, payload}, 1)
	{i_running_jobs, i_queue} = maybe_start_job(i_running_jobs, i_queue)
	{:noreply, %{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}}}
	end

	def handle_cast({:enqueue, type, payload, _priority}, state) do
	%{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}} = state
	o_queue = enqueue_sorted(o_queue, {type, payload}, 1)
	{o_running_jobs, o_queue} = maybe_start_job(o_running_jobs, o_queue)
	{:noreply, %{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}}}
	end

	def handle_cast(m, state) do
	IO.inspect("Unknown: #{inspect(m)}, #{inspect(state)}")
	{:noreply, state}
	end

	def handle_info({:DOWN, ref, :process, _pid, _reason}, state) do
	%{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}} = state
	i_running_jobs = :sets.del_element(ref, i_running_jobs)
	o_running_jobs = :sets.del_element(ref, o_running_jobs)
	{i_running_jobs, i_queue} = maybe_start_job(i_running_jobs, i_queue)
	{o_running_jobs, o_queue} = maybe_start_job(o_running_jobs, o_queue)

	{:noreply, %{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}}}
	end

	def enqueue_sorted(queue, element, priority) do
	[%{item: element, priority: priority} \| queue]
	\|> Enum.sort_by(fn %{priority: priority} -> priority end)
	end

	def queue_pop([%{item: element} \| queue]) do
	{element, queue}
	end

	def ap_enabled_actor(id) do
	user = User.get_by_ap_id(id)

	if User.ap_enabled?(user) do
	{:ok, user}
	else
	ActivityPub.make_user_from_ap_id(id)
	end
	end
	end
	diff --git a/lib/pleroma/web/salmon/salmon.ex b/lib/pleroma/web/salmon/salmon.ex
	index 07ca42a5f..b1c2dc7fa 100644
	--- a/lib/pleroma/web/salmon/salmon.ex
	+++ b/lib/pleroma/web/salmon/salmon.ex
	@@ -1,233 +1,241 @@
	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Web.Salmon do
	@httpoison Application.get_env(:pleroma, :httpoison)

	use Bitwise
	alias Pleroma.Instances
	alias Pleroma.Web.XML
	alias Pleroma.Web.OStatus.ActivityRepresenter
	alias Pleroma.User
	require Logger

	def decode(salmon) do
	doc = XML.parse_document(salmon)

	{:xmlObj, :string, data} = :xmerl_xpath.string('string(//me:data[1])', doc)
	{:xmlObj, :string, sig} = :xmerl_xpath.string('string(//me:sig[1])', doc)
	{:xmlObj, :string, alg} = :xmerl_xpath.string('string(//me:alg[1])', doc)
	{:xmlObj, :string, encoding} = :xmerl_xpath.string('string(//me:encoding[1])', doc)
	{:xmlObj, :string, type} = :xmerl_xpath.string('string(//me:data[1]/@type)', doc)

	{:ok, data} = Base.url_decode64(to_string(data), ignore: :whitespace)
	{:ok, sig} = Base.url_decode64(to_string(sig), ignore: :whitespace)
	alg = to_string(alg)
	encoding = to_string(encoding)
	type = to_string(type)

	[data, type, encoding, alg, sig]
	end

	def fetch_magic_key(salmon) do
	with [data, _, _, _, _] <- decode(salmon),
	doc <- XML.parse_document(data),
	uri when not is_nil(uri) <- XML.string_from_xpath("/entry/author[1]/uri", doc),
	{:ok, public_key} <- User.get_public_key_for_ap_id(uri),
	magic_key <- encode_key(public_key) do
	{:ok, magic_key}
	end
	end

	def decode_and_validate(magickey, salmon) do
	[data, type, encoding, alg, sig] = decode(salmon)

	signed_text =
	[data, type, encoding, alg]
	\|> Enum.map(&Base.url_encode64/1)
	\|> Enum.join(".")

	key = decode_key(magickey)

	verify = :public_key.verify(signed_text, :sha256, sig, key)

	if verify do
	{:ok, data}
	else
	:error
	end
	end

	def decode_key("RSA." <> magickey) do
	make_integer = fn bin ->
	list = :erlang.binary_to_list(bin)
	Enum.reduce(list, 0, fn el, acc -> acc <<< 8 \|\|\| el end)
	end

	[modulus, exponent] =
	magickey
	\|> String.split(".")
	\|> Enum.map(fn n -> Base.url_decode64!(n, padding: false) end)
	\|> Enum.map(make_integer)

	{:RSAPublicKey, modulus, exponent}
	end

	def encode_key({:RSAPublicKey, modulus, exponent}) do
	modulus_enc = :binary.encode_unsigned(modulus) \|> Base.url_encode64()
	exponent_enc = :binary.encode_unsigned(exponent) \|> Base.url_encode64()

	"RSA.#{modulus_enc}.#{exponent_enc}"
	end

	# Native generation of RSA keys is only available since OTP 20+ and in default build conditions
	# We try at compile time to generate natively an RSA key otherwise we fallback on the old way.
	try do
	_ = :public_key.generate_key({:rsa, 2048, 65537})

	def generate_rsa_pem do
	key = :public_key.generate_key({:rsa, 2048, 65537})
	entry = :public_key.pem_entry_encode(:RSAPrivateKey, key)
	pem = :public_key.pem_encode([entry]) \|> String.trim_trailing()
	{:ok, pem}
	end
	rescue
	_ ->
	def generate_rsa_pem do
	port = Port.open({:spawn, "openssl genrsa"}, [:binary])

	{:ok, pem} =
	receive do
	{^port, {:data, pem}} -> {:ok, pem}
	end

	Port.close(port)

	if Regex.match?(~r/RSA PRIVATE KEY/, pem) do
	{:ok, pem}
	else
	:error
	end
	end
	end

	def keys_from_pem(pem) do
	[private_key_code] = :public_key.pem_decode(pem)
	private_key = :public_key.pem_entry_decode(private_key_code)
	{:RSAPrivateKey, _, modulus, exponent, _, _, _, _, _, _, _} = private_key
	public_key = {:RSAPublicKey, modulus, exponent}
	{:ok, private_key, public_key}
	end

	def encode(private_key, doc) do
	type = "application/atom+xml"
	encoding = "base64url"
	alg = "RSA-SHA256"

	signed_text =
	[doc, type, encoding, alg]
	\|> Enum.map(&Base.url_encode64/1)
	\|> Enum.join(".")

	signature =
	signed_text
	\|> :public_key.sign(:sha256, private_key)
	\|> to_string
	\|> Base.url_encode64()

	doc_base64 =
	doc
	\|> Base.url_encode64()

	# Don't need proper xml building, these strings are safe to leave unescaped
	salmon = """
	<?xml version="1.0" encoding="UTF-8"?>
	<me:env xmlns:me="http://salmon-protocol.org/ns/magic-env">
	<me:data type="application/atom+xml">#{doc_base64}</me:data>
	<me:encoding>#{encoding}</me:encoding>
	<me:alg>#{alg}</me:alg>
	<me:sig>#{signature}</me:sig>
	</me:env>
	"""

	{:ok, salmon}
	end

	def remote_users(%{data: %{"to" => to} = data}) do
	to = to ++ (data["cc"] \|\| [])

	to
	\|> Enum.map(fn id -> User.get_cached_by_ap_id(id) end)
	\|> Enum.filter(fn user -> user && !user.local end)
	end

	- # push an activity to remote accounts
	- #
	- def send_to_user(%{info: %{salmon: salmon}}, feed, poster),
	- do: send_to_user(salmon, feed, poster)
	+ @doc "Pushes an activity to remote account."
	+ def send_to_user(%{recipient: %{info: %{salmon: salmon}}} = params),
	+ do: send_to_user(Map.put(params, :recipient, salmon))

	- def send_to_user(url, feed, poster) when is_binary(url) do
	+ def send_to_user(%{recipient: url, feed: feed, poster: poster} = params) when is_binary(url) do
	with {:ok, %{status: code}} when code in 200..299 <-
	poster.(
	url,
	feed,
	[{"Content-Type", "application/magic-envelope+xml"}]
	) do
	- Instances.set_reachable(url)
	+ if !Map.has_key?(params, :unreachable_since) \|\| params[:unreachable_since],
	+ do: Instances.set_reachable(url)
	+
	Logger.debug(fn -> "Pushed to #{url}, code #{code}" end)
	:ok
	else
	e ->
	- Instances.set_unreachable(url)
	+ unless params[:unreachable_since], do: Instances.set_reachable(url)
	Logger.debug(fn -> "Pushing Salmon to #{url} failed, #{inspect(e)}" end)
	:error
	end
	end

	- def send_to_user(_, _, _), do: :noop
	+ def send_to_user(_), do: :noop

	@supported_activities [
	"Create",
	"Follow",
	"Like",
	"Announce",
	"Undo",
	"Delete"
	]

	@doc """
	Publishes an activity to remote accounts
	"""
	@spec publish(User.t(), Pleroma.Activity.t(), Pleroma.HTTP.t()) :: none
	def publish(user, activity, poster \\ &@httpoison.post/3)

	def publish(%{info: %{keys: keys}} = user, %{data: %{"type" => type}} = activity, poster)
	when type in @supported_activities do
	feed = ActivityRepresenter.to_simple_form(activity, user, true)

	if feed do
	feed =
	ActivityRepresenter.wrap_with_entry(feed)
	\|> :xmerl.export_simple(:xmerl_xml)
	\|> to_string

	{:ok, private, _} = keys_from_pem(keys)
	{:ok, feed} = encode(private, feed)

	remote_users = remote_users(activity)

	salmon_urls = Enum.map(remote_users, & &1.info.salmon)
	- reachable_salmon_urls = Instances.filter_reachable(salmon_urls)
	+ reachable_urls_metadata = Instances.filter_reachable(salmon_urls)
	+ reachable_urls = Map.keys(reachable_urls_metadata)

	remote_users
	- \|> Enum.filter(&(&1.info.salmon in reachable_salmon_urls))
	+ \|> Enum.filter(&(&1.info.salmon in reachable_urls))
	\|> Enum.each(fn remote_user ->
	Logger.debug(fn -> "Sending Salmon to #{remote_user.ap_id}" end)
	- Pleroma.Web.Federator.enqueue(:publish_single_salmon, {remote_user, feed, poster})
	+
	+ Pleroma.Web.Federator.enqueue(:publish_single_salmon, %{
	+ recipient: remote_user,
	+ feed: feed,
	+ poster: poster,
	+ unreachable_since: reachable_urls_metadata[remote_user.info.salmon]
	+ })
	end)
	end
	end

	def publish(%{id: id}, _, _), do: Logger.debug(fn -> "Keys missing for user #{id}" end)
	end
	diff --git a/lib/pleroma/web/websub/websub.ex b/lib/pleroma/web/websub/websub.ex
	index 8f7d53b03..90ba79962 100644
	--- a/lib/pleroma/web/websub/websub.ex
	+++ b/lib/pleroma/web/websub/websub.ex
	@@ -1,294 +1,298 @@
	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Web.Websub do
	alias Ecto.Changeset
	alias Pleroma.Repo
	alias Pleroma.Instances
	alias Pleroma.Web.Websub.{WebsubServerSubscription, WebsubClientSubscription}
	alias Pleroma.Web.OStatus.FeedRepresenter
	alias Pleroma.Web.{XML, Endpoint, OStatus}
	alias Pleroma.Web.Router.Helpers
	require Logger

	import Ecto.Query

	@httpoison Application.get_env(:pleroma, :httpoison)

	def verify(subscription, getter \\ &@httpoison.get/3) do
	challenge = Base.encode16(:crypto.strong_rand_bytes(8))
	lease_seconds = NaiveDateTime.diff(subscription.valid_until, subscription.updated_at)
	lease_seconds = lease_seconds \|> to_string

	params = %{
	"hub.challenge": challenge,
	"hub.lease_seconds": lease_seconds,
	"hub.topic": subscription.topic,
	"hub.mode": "subscribe"
	}

	url = hd(String.split(subscription.callback, "?"))
	query = URI.parse(subscription.callback).query \|\| ""
	params = Map.merge(params, URI.decode_query(query))

	with {:ok, response} <- getter.(url, [], params: params),
	^challenge <- response.body do
	changeset = Changeset.change(subscription, %{state: "active"})
	Repo.update(changeset)
	else
	e ->
	Logger.debug("Couldn't verify subscription")
	Logger.debug(inspect(e))
	{:error, subscription}
	end
	end

	@supported_activities [
	"Create",
	"Follow",
	"Like",
	"Announce",
	"Undo",
	"Delete"
	]
	def publish(topic, user, %{data: %{"type" => type}} = activity)
	when type in @supported_activities do
	response =
	user
	\|> FeedRepresenter.to_simple_form([activity], [user])
	\|> :xmerl.export_simple(:xmerl_xml)
	\|> to_string

	query =
	from(
	sub in WebsubServerSubscription,
	where: sub.topic == ^topic and sub.state == "active",
	where: fragment("? > (NOW() at time zone 'UTC')", sub.valid_until)
	)

	subscriptions = Repo.all(query)

	callbacks = Enum.map(subscriptions, & &1.callback)
	- reachable_callbacks = Instances.filter_reachable(callbacks)
	+ reachable_callbacks_metadata = Instances.filter_reachable(callbacks)
	+ reachable_callbacks = Map.keys(reachable_callbacks_metadata)

	subscriptions
	\|> Enum.filter(&(&1.callback in reachable_callbacks))
	\|> Enum.each(fn sub ->
	data = %{
	xml: response,
	topic: topic,
	callback: sub.callback,
	- secret: sub.secret
	+ secret: sub.secret,
	+ unreachable_since: reachable_callbacks_metadata[sub.callback]
	}

	Pleroma.Web.Federator.enqueue(:publish_single_websub, data)
	end)
	end

	def publish(_, _, _), do: ""

	def sign(secret, doc) do
	:crypto.hmac(:sha, secret, to_string(doc)) \|> Base.encode16() \|> String.downcase()
	end

	def incoming_subscription_request(user, %{"hub.mode" => "subscribe"} = params) do
	with {:ok, topic} <- valid_topic(params, user),
	{:ok, lease_time} <- lease_time(params),
	secret <- params["hub.secret"],
	callback <- params["hub.callback"] do
	subscription = get_subscription(topic, callback)

	data = %{
	state: subscription.state \|\| "requested",
	topic: topic,
	secret: secret,
	callback: callback
	}

	change = Changeset.change(subscription, data)
	websub = Repo.insert_or_update!(change)

	change =
	Changeset.change(websub, %{valid_until: NaiveDateTime.add(websub.updated_at, lease_time)})

	websub = Repo.update!(change)

	Pleroma.Web.Federator.enqueue(:verify_websub, websub)

	{:ok, websub}
	else
	{:error, reason} ->
	Logger.debug("Couldn't create subscription")
	Logger.debug(inspect(reason))

	{:error, reason}
	end
	end

	def incoming_subscription_request(user, params) do
	Logger.info("Unhandled WebSub request for #{user.nickname}: #{inspect(params)}")

	{:error, "Invalid WebSub request"}
	end

	defp get_subscription(topic, callback) do
	Repo.get_by(WebsubServerSubscription, topic: topic, callback: callback) \|\|
	%WebsubServerSubscription{}
	end

	# Temp hack for mastodon.
	defp lease_time(%{"hub.lease_seconds" => ""}) do
	# three days
	{:ok, 60 * 60 * 24 * 3}
	end

	defp lease_time(%{"hub.lease_seconds" => lease_seconds}) do
	{:ok, String.to_integer(lease_seconds)}
	end

	defp lease_time(_) do
	# three days
	{:ok, 60 * 60 * 24 * 3}
	end

	defp valid_topic(%{"hub.topic" => topic}, user) do
	if topic == OStatus.feed_path(user) do
	{:ok, OStatus.feed_path(user)}
	else
	{:error, "Wrong topic requested, expected #{OStatus.feed_path(user)}, got #{topic}"}
	end
	end

	def subscribe(subscriber, subscribed, requester \\ &request_subscription/1) do
	topic = subscribed.info.topic
	# FIXME: Race condition, use transactions
	{:ok, subscription} =
	with subscription when not is_nil(subscription) <-
	Repo.get_by(WebsubClientSubscription, topic: topic) do
	subscribers = [subscriber.ap_id \| subscription.subscribers] \|> Enum.uniq()
	change = Ecto.Changeset.change(subscription, %{subscribers: subscribers})
	Repo.update(change)
	else
	_e ->
	subscription = %WebsubClientSubscription{
	topic: topic,
	hub: subscribed.info.hub,
	subscribers: [subscriber.ap_id],
	state: "requested",
	secret: :crypto.strong_rand_bytes(8) \|> Base.url_encode64(),
	user: subscribed
	}

	Repo.insert(subscription)
	end

	requester.(subscription)
	end

	def gather_feed_data(topic, getter \\ &@httpoison.get/1) do
	with {:ok, response} <- getter.(topic),
	status when status in 200..299 <- response.status,
	body <- response.body,
	doc <- XML.parse_document(body),
	uri when not is_nil(uri) <- XML.string_from_xpath("/feed/author[1]/uri", doc),
	hub when not is_nil(hub) <- XML.string_from_xpath(~S{/feed/link[@rel="hub"]/@href}, doc) do
	name = XML.string_from_xpath("/feed/author[1]/name", doc)
	preferredUsername = XML.string_from_xpath("/feed/author[1]/poco:preferredUsername", doc)
	displayName = XML.string_from_xpath("/feed/author[1]/poco:displayName", doc)
	avatar = OStatus.make_avatar_object(doc)
	bio = XML.string_from_xpath("/feed/author[1]/summary", doc)

	{:ok,
	%{
	"uri" => uri,
	"hub" => hub,
	"nickname" => preferredUsername \|\| name,
	"name" => displayName \|\| name,
	"host" => URI.parse(uri).host,
	"avatar" => avatar,
	"bio" => bio
	}}
	else
	e ->
	{:error, e}
	end
	end

	def request_subscription(websub, poster \\ &@httpoison.post/3, timeout \\ 10_000) do
	data = [
	"hub.mode": "subscribe",
	"hub.topic": websub.topic,
	"hub.secret": websub.secret,
	"hub.callback": Helpers.websub_url(Endpoint, :websub_subscription_confirmation, websub.id)
	]

	# This checks once a second if we are confirmed yet
	websub_checker = fn ->
	helper = fn helper ->
	:timer.sleep(1000)
	websub = Repo.get_by(WebsubClientSubscription, id: websub.id, state: "accepted")
	if websub, do: websub, else: helper.(helper)
	end

	helper.(helper)
	end

	task = Task.async(websub_checker)

	with {:ok, %{status: 202}} <-
	poster.(websub.hub, {:form, data}, "Content-type": "application/x-www-form-urlencoded"),
	{:ok, websub} <- Task.yield(task, timeout) do
	{:ok, websub}
	else
	e ->
	Task.shutdown(task)

	change = Ecto.Changeset.change(websub, %{state: "rejected"})
	{:ok, websub} = Repo.update(change)

	Logger.debug(fn -> "Couldn't confirm subscription: #{inspect(websub)}" end)
	Logger.debug(fn -> "error: #{inspect(e)}" end)

	{:error, websub}
	end
	end

	def refresh_subscriptions(delta \\ 60 * 60 * 24) do
	Logger.debug("Refreshing subscriptions")

	cut_off = NaiveDateTime.add(NaiveDateTime.utc_now(), delta)

	query = from(sub in WebsubClientSubscription, where: sub.valid_until < ^cut_off)

	subs = Repo.all(query)

	Enum.each(subs, fn sub ->
	Pleroma.Web.Federator.enqueue(:request_subscription, sub)
	end)
	end

	- def publish_one(%{xml: xml, topic: topic, callback: callback, secret: secret}) do
	+ def publish_one(%{xml: xml, topic: topic, callback: callback, secret: secret} = params) do
	signature = sign(secret \|\| "", xml)
	Logger.info(fn -> "Pushing #{topic} to #{callback}" end)

	with {:ok, %{status: code}} when code in 200..299 <-
	@httpoison.post(
	callback,
	xml,
	[
	{"Content-Type", "application/atom+xml"},
	{"X-Hub-Signature", "sha1=#{signature}"}
	]
	) do
	- Instances.set_reachable(callback)
	+ if !Map.has_key?(params, :unreachable_since) \|\| params[:unreachable_since],
	+ do: Instances.set_reachable(callback)
	+
	Logger.info(fn -> "Pushed to #{callback}, code #{code}" end)
	{:ok, code}
	else
	{_post_result, response} ->
	- Instances.set_unreachable(callback)
	+ unless params[:unreachable_since], do: Instances.set_reachable(callback)
	Logger.debug(fn -> "Couldn't push to #{callback}, #{inspect(response)}" end)
	{:error, response}
	end
	end
	end
	diff --git a/test/web/activity_pub/activity_pub_test.exs b/test/web/activity_pub/activity_pub_test.exs
	index 2ada4f2e5..a55961ac4 100644
	--- a/test/web/activity_pub/activity_pub_test.exs
	+++ b/test/web/activity_pub/activity_pub_test.exs
	@@ -1,743 +1,812 @@
	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
	use Pleroma.DataCase
	alias Pleroma.Web.ActivityPub.ActivityPub
	alias Pleroma.Web.ActivityPub.Utils
	alias Pleroma.Web.CommonAPI
	alias Pleroma.{Activity, Object, User, Instances}
	alias Pleroma.Builders.ActivityBuilder

	import Pleroma.Factory
	import Tesla.Mock
	import Mock

	setup do
	mock(fn env -> apply(HttpRequestMock, :request, [env]) end)
	:ok
	end

	describe "fetching restricted by visibility" do
	test "it restricts by the appropriate visibility" do
	user = insert(:user)

	{:ok, public_activity} = CommonAPI.post(user, %{"status" => ".", "visibility" => "public"})

	{:ok, direct_activity} = CommonAPI.post(user, %{"status" => ".", "visibility" => "direct"})

	{:ok, unlisted_activity} =
	CommonAPI.post(user, %{"status" => ".", "visibility" => "unlisted"})

	{:ok, private_activity} =
	CommonAPI.post(user, %{"status" => ".", "visibility" => "private"})

	activities =
	ActivityPub.fetch_activities([], %{:visibility => "direct", "actor_id" => user.ap_id})

	assert activities == [direct_activity]

	activities =
	ActivityPub.fetch_activities([], %{:visibility => "unlisted", "actor_id" => user.ap_id})

	assert activities == [unlisted_activity]

	activities =
	ActivityPub.fetch_activities([], %{:visibility => "private", "actor_id" => user.ap_id})

	assert activities == [private_activity]

	activities =
	ActivityPub.fetch_activities([], %{:visibility => "public", "actor_id" => user.ap_id})

	assert activities == [public_activity]
	end
	end

	describe "building a user from his ap id" do
	test "it returns a user" do
	user_id = "http://mastodon.example.org/users/admin"
	{: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.follower_address == "http://mastodon.example.org/users/admin/followers"
	end

	test "it fetches the appropriate tag-restricted posts" do
	user = insert(:user)

	{:ok, status_one} = CommonAPI.post(user, %{"status" => ". #test"})
	{:ok, status_two} = CommonAPI.post(user, %{"status" => ". #essais"})
	{:ok, status_three} = CommonAPI.post(user, %{"status" => ". #test #reject"})

	fetch_one = ActivityPub.fetch_activities([], %{"tag" => "test"})
	fetch_two = ActivityPub.fetch_activities([], %{"tag" => ["test", "essais"]})

	fetch_three =
	ActivityPub.fetch_activities([], %{
	"tag" => ["test", "essais"],
	"tag_reject" => ["reject"]
	})

	fetch_four =
	ActivityPub.fetch_activities([], %{
	"tag" => ["test"],
	"tag_all" => ["test", "reject"]
	})

	assert fetch_one == [status_one, status_three]
	assert fetch_two == [status_one, status_two, status_three]
	assert fetch_three == [status_one, status_two]
	assert fetch_four == [status_three]
	end
	end

	describe "insertion" do
	test "drops activities beyond a certain limit" do
	limit = Pleroma.Config.get([:instance, :remote_limit])

	random_text =
	:crypto.strong_rand_bytes(limit + 1)
	\|> Base.encode64()
	\|> binary_part(0, limit + 1)

	data = %{
	"ok" => true,
	"object" => %{
	"content" => random_text
	}
	}

	assert {:error, {:remote_limit_error, _}} = ActivityPub.insert(data)
	end

	test "doesn't drop activities with content being null" do
	data = %{
	"ok" => true,
	"object" => %{
	"content" => nil
	}
	}

	assert {:ok, _} = ActivityPub.insert(data)
	end

	test "returns the activity if one with the same id is already in" do
	activity = insert(:note_activity)
	{:ok, new_activity} = ActivityPub.insert(activity.data)

	assert activity == new_activity
	end

	test "inserts a given map into the activity database, giving it an id if it has none." do
	data = %{
	"ok" => true
	}

	{:ok, %Activity{} = activity} = ActivityPub.insert(data)
	assert activity.data["ok"] == data["ok"]
	assert is_binary(activity.data["id"])

	given_id = "bla"

	data = %{
	"ok" => true,
	"id" => given_id,
	"context" => "blabla"
	}

	{:ok, %Activity{} = activity} = ActivityPub.insert(data)
	assert activity.data["ok"] == data["ok"]
	assert activity.data["id"] == given_id
	assert activity.data["context"] == "blabla"
	assert activity.data["context_id"]
	end

	test "adds a context when none is there" do
	data = %{
	"id" => "some_id",
	"object" => %{
	"id" => "object_id"
	}
	}

	{:ok, %Activity{} = activity} = ActivityPub.insert(data)

	assert is_binary(activity.data["context"])
	assert is_binary(activity.data["object"]["context"])
	assert activity.data["context_id"]
	assert activity.data["object"]["context_id"]
	end

	test "adds an id to a given object if it lacks one and is a note and inserts it to the object database" do
	data = %{
	"object" => %{
	"type" => "Note",
	"ok" => true
	}
	}

	{:ok, %Activity{} = activity} = ActivityPub.insert(data)
	assert is_binary(activity.data["object"]["id"])
	assert %Object{} = Object.get_by_ap_id(activity.data["object"]["id"])
	end
	end

	describe "create activities" do
	test "removes doubled 'to' recipients" do
	user = insert(:user)

	{:ok, activity} =
	ActivityPub.create(%{
	to: ["user1", "user1", "user2"],
	actor: user,
	context: "",
	object: %{}
	})

	assert activity.data["to"] == ["user1", "user2"]
	assert activity.actor == user.ap_id
	assert activity.recipients == ["user1", "user2", user.ap_id]
	end
	end

	describe "fetch activities for recipients" do
	test "retrieve the activities for certain recipients" do
	{:ok, activity_one} = ActivityBuilder.insert(%{"to" => ["someone"]})
	{:ok, activity_two} = ActivityBuilder.insert(%{"to" => ["someone_else"]})
	{:ok, _activity_three} = ActivityBuilder.insert(%{"to" => ["noone"]})

	activities = ActivityPub.fetch_activities(["someone", "someone_else"])
	assert length(activities) == 2
	assert activities == [activity_one, activity_two]
	end
	end

	describe "fetch activities in context" do
	test "retrieves activities that have a given context" do
	{:ok, activity} = ActivityBuilder.insert(%{"type" => "Create", "context" => "2hu"})
	{:ok, activity_two} = ActivityBuilder.insert(%{"type" => "Create", "context" => "2hu"})
	{:ok, _activity_three} = ActivityBuilder.insert(%{"type" => "Create", "context" => "3hu"})
	{:ok, _activity_four} = ActivityBuilder.insert(%{"type" => "Announce", "context" => "2hu"})
	activity_five = insert(:note_activity)
	user = insert(:user)

	{:ok, user} = User.block(user, %{ap_id: activity_five.data["actor"]})

	activities = ActivityPub.fetch_activities_for_context("2hu", %{"blocking_user" => user})
	assert activities == [activity_two, activity]
	end
	end

	test "doesn't return blocked 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.block(user, %{ap_id: activity_one.data["actor"]})

	activities = ActivityPub.fetch_activities([], %{"blocking_user" => user})

	assert Enum.member?(activities, activity_two)
	assert Enum.member?(activities, activity_three)
	refute Enum.member?(activities, activity_one)

	{:ok, user} = User.unblock(user, %{ap_id: activity_one.data["actor"]})

	activities = ActivityPub.fetch_activities([], %{"blocking_user" => user})

	assert Enum.member?(activities, activity_two)
	assert Enum.member?(activities, activity_three)
	assert Enum.member?(activities, activity_one)

	{:ok, user} = 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 = Repo.get(Activity, activity_three.id)

	activities = ActivityPub.fetch_activities([], %{"blocking_user" => user})

	assert Enum.member?(activities, activity_two)
	refute Enum.member?(activities, activity_three)
	refute Enum.member?(activities, boost_activity)
	assert Enum.member?(activities, activity_one)

	activities = ActivityPub.fetch_activities([], %{"blocking_user" => nil})

	assert Enum.member?(activities, activity_two)
	assert Enum.member?(activities, activity_three)
	assert Enum.member?(activities, boost_activity)
	assert Enum.member?(activities, activity_one)
	end

	test "excludes reblogs on request" do
	user = insert(:user)
	{:ok, expected_activity} = ActivityBuilder.insert(%{"type" => "Create"}, %{:user => user})
	{:ok, _} = ActivityBuilder.insert(%{"type" => "Announce"}, %{:user => user})

	[activity] = ActivityPub.fetch_user_activities(user, nil, %{"exclude_reblogs" => "true"})

	assert activity == expected_activity
	end

	describe "public fetch activities" do
	test "doesn't retrieve unlisted activities" do
	user = insert(:user)

	{:ok, _unlisted_activity} =
	CommonAPI.post(user, %{"status" => "yeah", "visibility" => "unlisted"})

	{:ok, listed_activity} = CommonAPI.post(user, %{"status" => "yeah"})

	[activity] = ActivityPub.fetch_public_activities()

	assert activity == listed_activity
	end

	test "retrieves public activities" do
	_activities = ActivityPub.fetch_public_activities()

	%{public: public} = ActivityBuilder.public_and_non_public()

	activities = ActivityPub.fetch_public_activities()
	assert length(activities) == 1
	assert Enum.at(activities, 0) == public
	end

	test "retrieves a maximum of 20 activities" do
	activities = ActivityBuilder.insert_list(30)
	last_expected = List.last(activities)

	activities = ActivityPub.fetch_public_activities()
	last = List.last(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)
	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 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)

	activities = ActivityPub.fetch_public_activities(%{"max_id" => max_id})
	last = List.last(activities)

	assert length(activities) == 20
	assert last == last_expected
	end
	end

	describe "like an object" do
	test "adds a like activity to the db" do
	note_activity = insert(:note_activity)
	object = Object.get_by_ap_id(note_activity.data["object"]["id"])
	user = insert(:user)
	user_two = insert(:user)

	{:ok, like_activity, object} = ActivityPub.like(user, object)

	assert like_activity.data["actor"] == user.ap_id
	assert like_activity.data["type"] == "Like"
	assert like_activity.data["object"] == object.data["id"]
	assert like_activity.data["to"] == [User.ap_followers(user), note_activity.data["actor"]]
	assert like_activity.data["context"] == object.data["context"]
	assert object.data["like_count"] == 1
	assert object.data["likes"] == [user.ap_id]

	# Just return the original activity if the user already liked it.
	{:ok, same_like_activity, object} = ActivityPub.like(user, object)

	assert like_activity == same_like_activity
	assert object.data["likes"] == [user.ap_id]

	[note_activity] = Activity.get_all_create_by_object_ap_id(object.data["id"])
	assert note_activity.data["object"]["like_count"] == 1

	{:ok, _like_activity, object} = ActivityPub.like(user_two, object)
	assert object.data["like_count"] == 2
	end
	end

	describe "unliking" do
	test "unliking a previously liked object" do
	note_activity = insert(:note_activity)
	object = Object.get_by_ap_id(note_activity.data["object"]["id"])
	user = insert(:user)

	# Unliking something that hasn't been liked does nothing
	{:ok, object} = ActivityPub.unlike(user, object)
	assert object.data["like_count"] == 0

	{:ok, like_activity, object} = ActivityPub.like(user, object)
	assert object.data["like_count"] == 1

	{:ok, _, _, object} = ActivityPub.unlike(user, object)
	assert object.data["like_count"] == 0

	assert Repo.get(Activity, like_activity.id) == nil
	end
	end

	describe "announcing an object" do
	test "adds an announce activity to the db" do
	note_activity = insert(:note_activity)
	object = Object.get_by_ap_id(note_activity.data["object"]["id"])
	user = insert(:user)

	{:ok, announce_activity, object} = ActivityPub.announce(user, object)
	assert object.data["announcement_count"] == 1
	assert object.data["announcements"] == [user.ap_id]

	assert announce_activity.data["to"] == [
	User.ap_followers(user),
	note_activity.data["actor"]
	]

	assert announce_activity.data["object"] == object.data["id"]
	assert announce_activity.data["actor"] == user.ap_id
	assert announce_activity.data["context"] == object.data["context"]
	end
	end

	describe "unannouncing an object" do
	test "unannouncing a previously announced object" do
	note_activity = insert(:note_activity)
	object = Object.get_by_ap_id(note_activity.data["object"]["id"])
	user = insert(:user)

	# Unannouncing an object that is not announced does nothing
	# {:ok, object} = ActivityPub.unannounce(user, object)
	# assert object.data["announcement_count"] == 0

	{:ok, announce_activity, object} = ActivityPub.announce(user, object)
	assert object.data["announcement_count"] == 1

	{:ok, unannounce_activity, object} = ActivityPub.unannounce(user, object)
	assert object.data["announcement_count"] == 0

	assert unannounce_activity.data["to"] == [
	User.ap_followers(user),
	announce_activity.data["actor"]
	]

	assert unannounce_activity.data["type"] == "Undo"
	assert unannounce_activity.data["object"] == announce_activity.data
	assert unannounce_activity.data["actor"] == user.ap_id
	assert unannounce_activity.data["context"] == announce_activity.data["context"]

	assert Repo.get(Activity, announce_activity.id) == nil
	end
	end

	describe "uploading files" do
	test "copies the file to the configured folder" do
	file = %Plug.Upload{
	content_type: "image/jpg",
	path: Path.absname("test/fixtures/image.jpg"),
	filename: "an_image.jpg"
	}

	{:ok, %Object{} = object} = ActivityPub.upload(file)
	assert object.data["name"] == "an_image.jpg"
	end

	test "works with base64 encoded images" do
	file = %{
	"img" => data_uri()
	}

	{:ok, %Object{}} = ActivityPub.upload(file)
	end
	end

	describe "fetch the latest Follow" do
	test "fetches the latest Follow activity" do
	%Activity{data: %{"type" => "Follow"}} = activity = insert(:follow_activity)
	follower = Repo.get_by(User, ap_id: activity.data["actor"])
	followed = Repo.get_by(User, ap_id: activity.data["object"])

	assert activity == Utils.fetch_latest_follow(follower, followed)
	end
	end

	describe "fetching an object" do
	test "it fetches an object" do
	{:ok, object} =
	ActivityPub.fetch_object_from_id("http://mastodon.example.org/@admin/99541947525187367")

	assert activity = Activity.get_create_by_object_ap_id(object.data["id"])
	assert activity.data["id"]

	{:ok, object_again} =
	ActivityPub.fetch_object_from_id("http://mastodon.example.org/@admin/99541947525187367")

	assert [attachment] = object.data["attachment"]
	assert is_list(attachment["url"])

	assert object == object_again
	end

	test "it works with objects only available via Ostatus" do
	{:ok, object} = ActivityPub.fetch_object_from_id("https://shitposter.club/notice/2827873")
	assert activity = Activity.get_create_by_object_ap_id(object.data["id"])
	assert activity.data["id"]

	{:ok, object_again} =
	ActivityPub.fetch_object_from_id("https://shitposter.club/notice/2827873")

	assert object == object_again
	end

	test "it correctly stitches up conversations between ostatus and ap" do
	last = "https://mstdn.io/users/mayuutann/statuses/99568293732299394"
	{:ok, object} = ActivityPub.fetch_object_from_id(last)

	object = Object.get_by_ap_id(object.data["inReplyTo"])
	assert object
	end
	end

	describe "following / unfollowing" do
	test "creates a follow activity" do
	follower = insert(:user)
	followed = insert(:user)

	{:ok, activity} = ActivityPub.follow(follower, followed)
	assert activity.data["type"] == "Follow"
	assert activity.data["actor"] == follower.ap_id
	assert activity.data["object"] == followed.ap_id
	end

	test "creates an undo activity for the last follow" do
	follower = insert(:user)
	followed = insert(:user)

	{:ok, follow_activity} = ActivityPub.follow(follower, followed)
	{:ok, activity} = ActivityPub.unfollow(follower, followed)

	assert activity.data["type"] == "Undo"
	assert activity.data["actor"] == follower.ap_id

	assert is_map(activity.data["object"])
	assert activity.data["object"]["type"] == "Follow"
	assert activity.data["object"]["object"] == followed.ap_id
	assert activity.data["object"]["id"] == follow_activity.data["id"]
	end
	end

	describe "blocking / unblocking" do
	test "creates a block activity" do
	blocker = insert(:user)
	blocked = insert(:user)

	{:ok, activity} = ActivityPub.block(blocker, blocked)

	assert activity.data["type"] == "Block"
	assert activity.data["actor"] == blocker.ap_id
	assert activity.data["object"] == blocked.ap_id
	end

	test "creates an undo activity for the last block" do
	blocker = insert(:user)
	blocked = insert(:user)

	{:ok, block_activity} = ActivityPub.block(blocker, blocked)
	{:ok, activity} = ActivityPub.unblock(blocker, blocked)

	assert activity.data["type"] == "Undo"
	assert activity.data["actor"] == blocker.ap_id

	assert is_map(activity.data["object"])
	assert activity.data["object"]["type"] == "Block"
	assert activity.data["object"]["object"] == blocked.ap_id
	assert activity.data["object"]["id"] == block_activity.data["id"]
	end
	end

	describe "deletion" do
	test "it creates a delete activity and deletes the original object" do
	note = insert(:note_activity)
	object = Object.get_by_ap_id(note.data["object"]["id"])
	{:ok, delete} = ActivityPub.delete(object)

	assert delete.data["type"] == "Delete"
	assert delete.data["actor"] == note.data["actor"]
	assert delete.data["object"] == note.data["object"]["id"]

	assert Repo.get(Activity, delete.id) != nil

	assert Repo.get(Object, object.id).data["type"] == "Tombstone"
	end
	end

	describe "timeline post-processing" do
	test "it filters broken threads" do
	user1 = insert(:user)
	user2 = insert(:user)
	user3 = insert(:user)

	{:ok, user1} = User.follow(user1, user3)
	assert User.following?(user1, user3)

	{:ok, user2} = User.follow(user2, user3)
	assert User.following?(user2, user3)

	{:ok, user3} = User.follow(user3, user2)
	assert User.following?(user3, user2)

	{:ok, public_activity} = CommonAPI.post(user3, %{"status" => "hi 1"})

	{:ok, private_activity_1} =
	CommonAPI.post(user3, %{"status" => "hi 2", "visibility" => "private"})

	{:ok, private_activity_2} =
	CommonAPI.post(user2, %{
	"status" => "hi 3",
	"visibility" => "private",
	"in_reply_to_status_id" => private_activity_1.id
	})

	{:ok, private_activity_3} =
	CommonAPI.post(user3, %{
	"status" => "hi 4",
	"visibility" => "private",
	"in_reply_to_status_id" => private_activity_2.id
	})

	activities = ActivityPub.fetch_activities([user1.ap_id \| user1.following])

	assert [public_activity, private_activity_1, private_activity_3] == activities
	assert length(activities) == 3

	activities = ActivityPub.contain_timeline(activities, user1)

	assert [public_activity, private_activity_1] == activities
	assert length(activities) == 2
	end
	end

	test "it can fetch plume articles" do
	{:ok, object} =
	ActivityPub.fetch_object_from_id(
	"https://baptiste.gelez.xyz/~/PlumeDevelopment/this-month-in-plume-june-2018/"
	)

	assert object
	end

	describe "update" do
	test "it creates an update activity with the new user data" do
	user = insert(:user)
	{:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
	user_data = Pleroma.Web.ActivityPub.UserView.render("user.json", %{user: user})

	{:ok, update} =
	ActivityPub.update(%{
	actor: user_data["id"],
	to: [user.follower_address],
	cc: [],
	object: user_data
	})

	assert update.data["actor"] == user.ap_id
	assert update.data["to"] == [user.follower_address]
	assert update.data["object"]["id"] == user_data["id"]
	assert update.data["object"]["type"] == user_data["type"]
	end
	end

	test "it can fetch peertube videos" do
	{:ok, object} =
	ActivityPub.fetch_object_from_id(
	"https://peertube.moe/videos/watch/df5f464b-be8d-46fb-ad81-2d4c2d1630e3"
	)

	assert object
	end

	test "returned pinned statuses" do
	Pleroma.Config.put([:instance, :max_pinned_statuses], 3)
	user = insert(:user)

	{:ok, activity_one} = CommonAPI.post(user, %{"status" => "HI!!!"})
	{:ok, activity_two} = CommonAPI.post(user, %{"status" => "HI!!!"})
	{:ok, activity_three} = CommonAPI.post(user, %{"status" => "HI!!!"})

	CommonAPI.pin(activity_one.id, user)
	user = refresh_record(user)

	CommonAPI.pin(activity_two.id, user)
	user = refresh_record(user)

	CommonAPI.pin(activity_three.id, user)
	user = refresh_record(user)

	activities = ActivityPub.fetch_user_activities(user, nil, %{"pinned" => "true"})

	assert 3 = length(activities)
	end

	describe "publish_one/1" do
	- test_with_mock "it calls `Instances.set_unreachable` on target inbox on non-2xx HTTP response code",
	+ test_with_mock "calls `Instances.set_reachable` on successful federation if `unreachable_since` is not specified",
	+ Instances,
	+ [:passthrough],
	+ [] do
	+ actor = insert(:user)
	+ inbox = "http://200.site/users/nick1/inbox"
	+
	+ assert {:ok, _} = ActivityPub.publish_one(%{inbox: inbox, json: "{}", actor: actor, id: 1})
	+
	+ assert called(Instances.set_reachable(inbox))
	+ end
	+
	+ test_with_mock "calls `Instances.set_reachable` on successful federation if `unreachable_since` is set",
	+ Instances,
	+ [:passthrough],
	+ [] do
	+ actor = insert(:user)
	+ inbox = "http://200.site/users/nick1/inbox"
	+
	+ assert {:ok, _} =
	+ ActivityPub.publish_one(%{
	+ inbox: inbox,
	+ json: "{}",
	+ actor: actor,
	+ id: 1,
	+ unreachable_since: NaiveDateTime.utc_now()
	+ })
	+
	+ assert called(Instances.set_reachable(inbox))
	+ end
	+
	+ test_with_mock "does NOT call `Instances.set_reachable` on successful federation if `unreachable_since` is nil",
	+ Instances,
	+ [:passthrough],
	+ [] do
	+ actor = insert(:user)
	+ inbox = "http://200.site/users/nick1/inbox"
	+
	+ assert {:ok, _} =
	+ ActivityPub.publish_one(%{
	+ inbox: inbox,
	+ json: "{}",
	+ actor: actor,
	+ id: 1,
	+ unreachable_since: nil
	+ })
	+
	+ refute called(Instances.set_reachable(inbox))
	+ end
	+
	+ test_with_mock "calls `Instances.set_unreachable` on target inbox on non-2xx HTTP response code",
	Instances,
	[:passthrough],
	[] do
	actor = insert(:user)
	inbox = "http://404.site/users/nick1/inbox"

	assert {:error, _} =
	ActivityPub.publish_one(%{inbox: inbox, json: "{}", actor: actor, id: 1})

	assert called(Instances.set_unreachable(inbox))
	end

	test_with_mock "it calls `Instances.set_unreachable` on target inbox on request error of any kind",
	Instances,
	[:passthrough],
	[] do
	actor = insert(:user)
	inbox = "http://connrefused.site/users/nick1/inbox"

	assert {:error, _} =
	ActivityPub.publish_one(%{inbox: inbox, json: "{}", actor: actor, id: 1})

	assert called(Instances.set_unreachable(inbox))
	end

	- test_with_mock "it does NOT call `Instances.set_unreachable` if target is reachable",
	+ test_with_mock "does NOT call `Instances.set_unreachable` if target is reachable",
	Instances,
	[:passthrough],
	[] do
	actor = insert(:user)
	inbox = "http://200.site/users/nick1/inbox"

	assert {:ok, _} = ActivityPub.publish_one(%{inbox: inbox, json: "{}", actor: actor, id: 1})

	refute called(Instances.set_unreachable(inbox))
	end
	+
	+ test_with_mock "does NOT call `Instances.set_unreachable` if target instance has non-nil `unreachable_since`",
	+ Instances,
	+ [:passthrough],
	+ [] do
	+ actor = insert(:user)
	+ inbox = "http://connrefused.site/users/nick1/inbox"
	+
	+ assert {:error, _} =
	+ ActivityPub.publish_one(%{
	+ inbox: inbox,
	+ json: "{}",
	+ actor: actor,
	+ id: 1,
	+ unreachable_since: NaiveDateTime.utc_now()
	+ })
	+
	+ refute called(Instances.set_unreachable(inbox))
	+ end
	end

	def data_uri do
	File.read!("test/fixtures/avatar_data_uri")
	end
	end
	diff --git a/test/web/federator_test.exs b/test/web/federator_test.exs
	index c6d10ef78..05f813291 100644
	--- a/test/web/federator_test.exs
	+++ b/test/web/federator_test.exs
	@@ -1,208 +1,229 @@
	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Web.FederatorTest do
	alias Pleroma.Web.{CommonAPI, Federator}
	alias Pleroma.Instances
	use Pleroma.DataCase
	import Pleroma.Factory
	import Mock

	setup_all do
	Tesla.Mock.mock_global(fn env -> apply(HttpRequestMock, :request, [env]) end)
	:ok
	end

	test "enqueues an element according to priority" do
	queue = [%{item: 1, priority: 2}]

	new_queue = Federator.enqueue_sorted(queue, 2, 1)
	assert new_queue == [%{item: 2, priority: 1}, %{item: 1, priority: 2}]

	new_queue = Federator.enqueue_sorted(queue, 2, 3)
	assert new_queue == [%{item: 1, priority: 2}, %{item: 2, priority: 3}]
	end

	test "pop first item" do
	queue = [%{item: 2, priority: 1}, %{item: 1, priority: 2}]

	assert {2, [%{item: 1, priority: 2}]} = Federator.queue_pop(queue)
	end

	describe "Publish an activity" do
	setup do
	user = insert(:user)
	{:ok, activity} = CommonAPI.post(user, %{"status" => "HI"})

	relay_mock = {
	Pleroma.Web.ActivityPub.Relay,
	[],
	[publish: fn _activity -> send(self(), :relay_publish) end]
	}

	%{activity: activity, relay_mock: relay_mock}
	end

	test "with relays active, it publishes to the relay", %{
	activity: activity,
	relay_mock: relay_mock
	} do
	with_mocks([relay_mock]) do
	Federator.handle(:publish, activity)
	end

	assert_received :relay_publish
	end

	test "with relays deactivated, it does not publish to the relay", %{
	activity: activity,
	relay_mock: relay_mock
	} do
	Pleroma.Config.put([:instance, :allow_relay], false)

	with_mocks([relay_mock]) do
	Federator.handle(:publish, activity)
	end

	refute_received :relay_publish

	Pleroma.Config.put([:instance, :allow_relay], true)
	end
	end

	describe "Targets reachability filtering in `publish`" do
	test_with_mock "it federates only to reachable instances via AP",
	Federator,
	[:passthrough],
	[] do
	user = insert(:user)

	{inbox1, inbox2} =
	{"https://domain.com/users/nick1/inbox", "https://domain2.com/users/nick2/inbox"}

	insert(:user, %{
	local: false,
	nickname: "nick1@domain.com",
	ap_id: "https://domain.com/users/nick1",
	info: %{ap_enabled: true, source_data: %{"inbox" => inbox1}}
	})

	insert(:user, %{
	local: false,
	nickname: "nick2@domain2.com",
	ap_id: "https://domain2.com/users/nick2",
	info: %{ap_enabled: true, source_data: %{"inbox" => inbox2}}
	})

	- Instances.set_unreachable(
	- URI.parse(inbox2).host,
	- Instances.reachability_datetime_threshold()
	- )
	+ dt = NaiveDateTime.utc_now()
	+ Instances.set_unreachable(inbox1, dt)
	+
	+ Instances.set_consistently_unreachable(URI.parse(inbox2).host)

	{:ok, _activity} =
	CommonAPI.post(user, %{"status" => "HI @nick1@domain.com, @nick2@domain2.com!"})

	- assert called(Federator.enqueue(:publish_single_ap, %{inbox: inbox1}))
	+ assert called(
	+ Federator.enqueue(:publish_single_ap, %{inbox: inbox1, unreachable_since: dt})
	+ )
	+
	refute called(Federator.enqueue(:publish_single_ap, %{inbox: inbox2}))
	end

	test_with_mock "it federates only to reachable instances via Websub",
	Federator,
	[:passthrough],
	[] do
	user = insert(:user)
	websub_topic = Pleroma.Web.OStatus.feed_path(user)

	sub1 =
	insert(:websub_subscription, %{
	topic: websub_topic,
	state: "active",
	callback: "http://pleroma.soykaf.com/cb"
	})

	sub2 =
	insert(:websub_subscription, %{
	topic: websub_topic,
	state: "active",
	callback: "https://pleroma2.soykaf.com/cb"
	})

	+ dt = NaiveDateTime.utc_now()
	+ Instances.set_unreachable(sub2.callback, dt)
	+
	Instances.set_consistently_unreachable(sub1.callback)

	{:ok, _activity} = CommonAPI.post(user, %{"status" => "HI"})

	- assert called(Federator.enqueue(:publish_single_websub, %{callback: sub2.callback}))
	+ assert called(
	+ Federator.enqueue(:publish_single_websub, %{
	+ callback: sub2.callback,
	+ unreachable_since: dt
	+ })
	+ )
	+
	refute called(Federator.enqueue(:publish_single_websub, %{callback: sub1.callback}))
	end

	test_with_mock "it federates only to reachable instances via Salmon",
	Federator,
	[:passthrough],
	[] do
	user = insert(:user)

	remote_user1 =
	insert(:user, %{
	local: false,
	nickname: "nick1@domain.com",
	ap_id: "https://domain.com/users/nick1",
	info: %{salmon: "https://domain.com/salmon"}
	})

	remote_user2 =
	insert(:user, %{
	local: false,
	nickname: "nick2@domain2.com",
	ap_id: "https://domain2.com/users/nick2",
	info: %{salmon: "https://domain2.com/salmon"}
	})

	+ dt = NaiveDateTime.utc_now()
	+ Instances.set_unreachable(remote_user2.ap_id, dt)
	+
	Instances.set_consistently_unreachable("domain.com")

	{:ok, _activity} =
	CommonAPI.post(user, %{"status" => "HI @nick1@domain.com, @nick2@domain2.com!"})

	- assert called(Federator.enqueue(:publish_single_salmon, {remote_user2, :_, :_}))
	- refute called(Federator.enqueue(:publish_single_websub, {remote_user1, :_, :_}))
	+ assert called(
	+ Federator.enqueue(:publish_single_salmon, %{
	+ recipient: remote_user2,
	+ unreachable_since: dt
	+ })
	+ )
	+
	+ refute called(Federator.enqueue(:publish_single_websub, %{recipient: remote_user1}))
	end
	end

	describe "Receive an activity" do
	test "successfully processes incoming AP docs with correct origin" do
	params = %{
	"@context" => "https://www.w3.org/ns/activitystreams",
	"actor" => "http://mastodon.example.org/users/admin",
	"type" => "Create",
	"id" => "http://mastodon.example.org/users/admin/activities/1",
	"object" => %{
	"type" => "Note",
	"content" => "hi world!",
	"id" => "http://mastodon.example.org/users/admin/objects/1",
	"attributedTo" => "http://mastodon.example.org/users/admin"
	},
	"to" => ["https://www.w3.org/ns/activitystreams#Public"]
	}

	{:ok, _activity} = Federator.handle(:incoming_ap_doc, params)
	end

	test "rejects incoming AP docs with incorrect origin" do
	params = %{
	"@context" => "https://www.w3.org/ns/activitystreams",
	"actor" => "https://niu.moe/users/rye",
	"type" => "Create",
	"id" => "http://mastodon.example.org/users/admin/activities/1",
	"object" => %{
	"type" => "Note",
	"content" => "hi world!",
	"id" => "http://mastodon.example.org/users/admin/objects/1",
	"attributedTo" => "http://mastodon.example.org/users/admin"
	},
	"to" => ["https://www.w3.org/ns/activitystreams#Public"]
	}

	:error = Federator.handle(:incoming_ap_doc, params)
	end
	end
	end
	diff --git a/test/web/instances/instances_test.exs b/test/web/instances/instances_test.exs
	index adb8560a7..2530c09fe 100644
	--- a/test/web/instances/instances_test.exs
	+++ b/test/web/instances/instances_test.exs
	@@ -1,112 +1,131 @@
	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.InstancesTest do
	alias Pleroma.Instances

	use Pleroma.DataCase

	setup_all do
	config_path = [:instance, :federation_reachability_timeout_days]
	initial_setting = Pleroma.Config.get(config_path)

	Pleroma.Config.put(config_path, 1)
	on_exit(fn -> Pleroma.Config.put(config_path, initial_setting) end)

	:ok
	end

	describe "reachable?/1" do
	test "returns `true` for host / url with unknown reachability status" do
	assert Instances.reachable?("unknown.site")
	assert Instances.reachable?("http://unknown.site")
	end

	test "returns `false` for host / url marked unreachable for at least `reachability_datetime_threshold()`" do
	host = "consistently-unreachable.name"
	Instances.set_consistently_unreachable(host)

	refute Instances.reachable?(host)
	refute Instances.reachable?("http://#{host}/path")
	end

	test "returns `true` for host / url marked unreachable for less than `reachability_datetime_threshold()`" do
	url = "http://eventually-unreachable.name/path"

	Instances.set_unreachable(url)

	assert Instances.reachable?(url)
	assert Instances.reachable?(URI.parse(url).host)
	end

	test "returns true on non-binary input" do
	assert Instances.reachable?(nil)
	assert Instances.reachable?(1)
	end
	end

	describe "filter_reachable/1" do
	- test "keeps only reachable elements of supplied list" do
	+ setup do
	host = "consistently-unreachable.name"
	url1 = "http://eventually-unreachable.com/path"
	url2 = "http://domain.com/path"

	Instances.set_consistently_unreachable(host)
	Instances.set_unreachable(url1)

	- assert [url1, url2] == Instances.filter_reachable([host, url1, url2])
	+ result = Instances.filter_reachable([host, url1, url2, nil])
	+ %{result: result, url1: url1, url2: url2}
	+ end
	+
	+ test "returns a map with keys containing 'not marked consistently unreachable' elements of supplied list",
	+ %{result: result, url1: url1, url2: url2} do
	+ assert is_map(result)
	+ assert Enum.sort([url1, url2]) == result \|> Map.keys() \|> Enum.sort()
	+ end
	+
	+ test "returns a map with `unreachable_since` values for keys",
	+ %{result: result, url1: url1, url2: url2} do
	+ assert is_map(result)
	+ assert %NaiveDateTime{} = result[url1]
	+ assert is_nil(result[url2])
	+ end
	+
	+ test "returns an empty map for empty list or list containing no hosts / url" do
	+ assert %{} == Instances.filter_reachable([])
	+ assert %{} == Instances.filter_reachable([nil])
	end
	end

	describe "set_reachable/1" do
	test "sets unreachable url or host reachable" do
	host = "domain.com"
	Instances.set_consistently_unreachable(host)
	refute Instances.reachable?(host)

	Instances.set_reachable(host)
	assert Instances.reachable?(host)
	end

	test "keeps reachable url or host reachable" do
	url = "https://site.name?q="
	assert Instances.reachable?(url)

	Instances.set_reachable(url)
	assert Instances.reachable?(url)
	end

	test "returns error status on non-binary input" do
	assert {:error, _} = Instances.set_reachable(nil)
	assert {:error, _} = Instances.set_reachable(1)
	end
	end

	# Note: implementation-specific (e.g. Instance) details of set_unreachable/1 should be tested in implementation-specific tests
	describe "set_unreachable/1" do
	test "returns error status on non-binary input" do
	assert {:error, _} = Instances.set_unreachable(nil)
	assert {:error, _} = Instances.set_unreachable(1)
	end
	end

	describe "set_consistently_unreachable/1" do
	test "sets reachable url or host unreachable" do
	url = "http://domain.com?q="
	assert Instances.reachable?(url)

	Instances.set_consistently_unreachable(url)
	refute Instances.reachable?(url)
	end

	test "keeps unreachable url or host unreachable" do
	host = "site.name"
	Instances.set_consistently_unreachable(host)
	refute Instances.reachable?(host)

	Instances.set_consistently_unreachable(host)
	refute Instances.reachable?(host)
	end
	end
	end

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