1 defmodule Pleroma.Web.ActivityPub.ActivityPub do
2 alias Pleroma.{Activity, Repo, Object, Upload, User, Notification}
3 alias Pleroma.Web.ActivityPub.{Transmogrifier, MRF}
4 alias Pleroma.Web.WebFinger
5 alias Pleroma.Web.Federator
6 alias Pleroma.Web.OStatus
8 import Pleroma.Web.ActivityPub.Utils
11 @httpoison Application.get_env(:pleroma, :httpoison)
13 @instance Application.get_env(:pleroma, :instance)
15 # For Announce activities, we filter the recipients based on following status for any actors
16 # that match actual users. See issue #164 for more information about why this is necessary.
17 def get_recipients(%{"type" => "Announce"} = data) do
18 recipients = (data["to"] || []) ++ (data["cc"] || [])
19 actor = User.get_cached_by_ap_id(data["actor"])
22 |> Enum.filter(fn recipient ->
23 case User.get_cached_by_ap_id(recipient) do
28 User.following?(user, actor)
33 def get_recipients(data) do
34 (data["to"] || []) ++ (data["cc"] || [])
37 defp check_actor_is_active(actor) do
38 if not is_nil(actor) do
39 with user <- User.get_cached_by_ap_id(actor),
40 nil <- user.info["deactivated"] do
50 def insert(map, local \\ true) when is_map(map) do
51 with nil <- Activity.normalize(map),
52 map <- lazy_put_activity_defaults(map),
53 :ok <- check_actor_is_active(map["actor"]),
54 {:ok, map} <- MRF.filter(map),
55 :ok <- insert_full_object(map) do
57 Repo.insert(%Activity{
61 recipients: get_recipients(map)
64 Notification.create_notifications(activity)
68 %Activity{} = activity -> {:ok, activity}
69 error -> {:error, error}
73 def stream_out(activity) do
74 public = "https://www.w3.org/ns/activitystreams#Public"
76 if activity.data["type"] in ["Create", "Announce"] do
77 Pleroma.Web.Streamer.stream("user", activity)
78 Pleroma.Web.Streamer.stream("list", activity)
80 if Enum.member?(activity.data["to"], public) do
81 Pleroma.Web.Streamer.stream("public", activity)
84 Pleroma.Web.Streamer.stream("public:local", activity)
87 if activity.data["object"]["attachment"] != [] do
88 Pleroma.Web.Streamer.stream("public:media", activity)
91 Pleroma.Web.Streamer.stream("public:local:media", activity)
95 if !Enum.member?(activity.data["cc"] || [], public) &&
98 User.get_by_ap_id(activity.data["actor"]).follower_address
100 do: Pleroma.Web.Streamer.stream("direct", activity)
105 def create(%{to: to, actor: actor, context: context, object: object} = params) do
106 additional = params[:additional] || %{}
107 # only accept false as false value
108 local = !(params[:local] == false)
109 published = params[:published]
113 %{to: to, actor: actor, published: published, context: context, object: object},
116 {:ok, activity} <- insert(create_data, local),
117 :ok <- maybe_federate(activity),
118 {:ok, _actor} <- User.increase_note_count(actor) do
123 def accept(%{to: to, actor: actor, object: object} = params) do
124 # only accept false as false value
125 local = !(params[:local] == false)
127 with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
128 {:ok, activity} <- insert(data, local),
129 :ok <- maybe_federate(activity) do
134 def reject(%{to: to, actor: actor, object: object} = params) do
135 # only accept false as false value
136 local = !(params[:local] == false)
138 with data <- %{"to" => to, "type" => "Reject", "actor" => actor, "object" => object},
139 {:ok, activity} <- insert(data, local),
140 :ok <- maybe_federate(activity) do
145 def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
146 # only accept false as false value
147 local = !(params[:local] == false)
156 {:ok, activity} <- insert(data, local),
157 :ok <- maybe_federate(activity) do
162 # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
164 %User{ap_id: ap_id} = user,
165 %Object{data: %{"id" => _}} = object,
169 with nil <- get_existing_like(ap_id, object),
170 like_data <- make_like_data(user, object, activity_id),
171 {:ok, activity} <- insert(like_data, local),
172 {:ok, object} <- add_like_to_object(activity, object),
173 :ok <- maybe_federate(activity) do
174 {:ok, activity, object}
176 %Activity{} = activity -> {:ok, activity, object}
177 error -> {:error, error}
187 with %Activity{} = like_activity <- get_existing_like(actor.ap_id, object),
188 unlike_data <- make_unlike_data(actor, like_activity, activity_id),
189 {:ok, unlike_activity} <- insert(unlike_data, local),
190 {:ok, _activity} <- Repo.delete(like_activity),
191 {:ok, object} <- remove_like_from_object(like_activity, object),
192 :ok <- maybe_federate(unlike_activity) do
193 {:ok, unlike_activity, like_activity, object}
200 %User{ap_id: _} = user,
201 %Object{data: %{"id" => _}} = object,
205 with true <- is_public?(object),
206 announce_data <- make_announce_data(user, object, activity_id),
207 {:ok, activity} <- insert(announce_data, local),
208 {:ok, object} <- add_announce_to_object(activity, object),
209 :ok <- maybe_federate(activity) do
210 {:ok, activity, object}
212 error -> {:error, error}
222 with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
223 unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
224 {:ok, unannounce_activity} <- insert(unannounce_data, local),
225 :ok <- maybe_federate(unannounce_activity),
226 {:ok, _activity} <- Repo.delete(announce_activity),
227 {:ok, object} <- remove_announce_from_object(announce_activity, object) do
228 {:ok, unannounce_activity, object}
234 def follow(follower, followed, activity_id \\ nil, local \\ true) do
235 with data <- make_follow_data(follower, followed, activity_id),
236 {:ok, activity} <- insert(data, local),
237 :ok <- maybe_federate(activity) do
242 def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
243 with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
244 {:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
245 unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
246 {:ok, activity} <- insert(unfollow_data, local),
247 :ok <- maybe_federate(activity) do
252 def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
253 user = User.get_cached_by_ap_id(actor)
259 "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
262 with Repo.delete(object),
263 Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
264 {:ok, activity} <- insert(data, local),
265 :ok <- maybe_federate(activity),
266 {:ok, _actor} <- User.decrease_note_count(user) do
271 def block(blocker, blocked, activity_id \\ nil, local \\ true) do
272 ap_config = Application.get_env(:pleroma, :activitypub)
273 unfollow_blocked = Keyword.get(ap_config, :unfollow_blocked)
274 outgoing_blocks = Keyword.get(ap_config, :outgoing_blocks)
276 with true <- unfollow_blocked do
277 follow_activity = fetch_latest_follow(blocker, blocked)
279 if follow_activity do
280 unfollow(blocker, blocked, nil, local)
284 with true <- outgoing_blocks,
285 block_data <- make_block_data(blocker, blocked, activity_id),
286 {:ok, activity} <- insert(block_data, local),
287 :ok <- maybe_federate(activity) do
294 def unblock(blocker, blocked, activity_id \\ nil, local \\ true) do
295 with %Activity{} = block_activity <- fetch_latest_block(blocker, blocked),
296 unblock_data <- make_unblock_data(blocker, blocked, block_activity, activity_id),
297 {:ok, activity} <- insert(unblock_data, local),
298 :ok <- maybe_federate(activity) do
303 def fetch_activities_for_context(context, opts \\ %{}) do
304 public = ["https://www.w3.org/ns/activitystreams#Public"]
307 if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
309 query = from(activity in Activity)
313 |> restrict_blocked(opts)
314 |> restrict_recipients(recipients, opts["user"])
321 "?->>'type' = ? and ?->>'context' = ?",
327 order_by: [desc: :id]
333 def fetch_public_activities(opts \\ %{}) do
334 q = fetch_activities_query(["https://www.w3.org/ns/activitystreams#Public"], opts)
337 |> restrict_unlisted()
342 @valid_visibilities ~w[direct unlisted public private]
344 defp restrict_visibility(query, %{visibility: "direct"}) do
345 public = "https://www.w3.org/ns/activitystreams#Public"
349 join: sender in User,
350 on: sender.ap_id == activity.actor,
351 # Are non-direct statuses with no to/cc possible?
355 [^public, sender.follower_address],
361 defp restrict_visibility(_query, %{visibility: visibility})
362 when visibility not in @valid_visibilities do
363 Logger.error("Could not restrict visibility to #{visibility}")
366 defp restrict_visibility(query, _visibility), do: query
368 def fetch_user_activities(user, reading_user, params \\ %{}) do
371 |> Map.put("type", ["Create", "Announce"])
372 |> Map.put("actor_id", user.ap_id)
373 |> Map.put("whole_db", true)
377 ["https://www.w3.org/ns/activitystreams#Public"] ++
378 [reading_user.ap_id | reading_user.following]
380 ["https://www.w3.org/ns/activitystreams#Public"]
383 fetch_activities(recipients, params)
387 defp restrict_since(query, %{"since_id" => since_id}) do
388 from(activity in query, where: activity.id > ^since_id)
391 defp restrict_since(query, _), do: query
393 defp restrict_tag(query, %{"tag" => tag}) do
396 where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
400 defp restrict_tag(query, _), do: query
402 defp restrict_recipients(query, [], _user), do: query
404 defp restrict_recipients(query, recipients, nil) do
405 from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
408 defp restrict_recipients(query, recipients, user) do
411 where: fragment("? && ?", ^recipients, activity.recipients),
412 or_where: activity.actor == ^user.ap_id
416 defp restrict_limit(query, %{"limit" => limit}) do
417 from(activity in query, limit: ^limit)
420 defp restrict_limit(query, _), do: query
422 defp restrict_local(query, %{"local_only" => true}) do
423 from(activity in query, where: activity.local == true)
426 defp restrict_local(query, _), do: query
428 defp restrict_max(query, %{"max_id" => max_id}) do
429 from(activity in query, where: activity.id < ^max_id)
432 defp restrict_max(query, _), do: query
434 defp restrict_actor(query, %{"actor_id" => actor_id}) do
435 from(activity in query, where: activity.actor == ^actor_id)
438 defp restrict_actor(query, _), do: query
440 defp restrict_type(query, %{"type" => type}) when is_binary(type) do
441 restrict_type(query, %{"type" => [type]})
444 defp restrict_type(query, %{"type" => type}) do
445 from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
448 defp restrict_type(query, _), do: query
450 defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
453 where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
457 defp restrict_favorited_by(query, _), do: query
459 defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
462 where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[])
466 defp restrict_media(query, _), do: query
468 defp restrict_replies(query, %{"exclude_replies" => val}) when val == "true" or val == "1" do
471 where: fragment("?->'object'->>'inReplyTo' is null", activity.data)
475 defp restrict_replies(query, _), do: query
477 # Only search through last 100_000 activities by default
478 defp restrict_recent(query, %{"whole_db" => true}), do: query
480 defp restrict_recent(query, _) do
481 since = (Repo.aggregate(Activity, :max, :id) || 0) - 100_000
483 from(activity in query, where: activity.id > ^since)
486 defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
487 blocks = info["blocks"] || []
488 domain_blocks = info["domain_blocks"] || []
492 where: fragment("not (? = ANY(?))", activity.actor, ^blocks),
493 where: fragment("not (?->'to' \\?| ?)", activity.data, ^blocks),
494 where: fragment("not (split_part(?, '/', 3) = ANY(?))", activity.actor, ^domain_blocks)
498 defp restrict_blocked(query, _), do: query
500 defp restrict_unlisted(query) do
505 "not (coalesce(?->'cc', '{}'::jsonb) \\?| ?)",
507 ^["https://www.w3.org/ns/activitystreams#Public"]
512 def fetch_activities_query(recipients, opts \\ %{}) do
515 activity in Activity,
517 order_by: [fragment("? desc nulls last", activity.id)]
521 |> restrict_recipients(recipients, opts["user"])
522 |> restrict_tag(opts)
523 |> restrict_since(opts)
524 |> restrict_local(opts)
525 |> restrict_limit(opts)
526 |> restrict_max(opts)
527 |> restrict_actor(opts)
528 |> restrict_type(opts)
529 |> restrict_favorited_by(opts)
530 |> restrict_recent(opts)
531 |> restrict_blocked(opts)
532 |> restrict_media(opts)
533 |> restrict_visibility(opts)
534 |> restrict_replies(opts)
537 def fetch_activities(recipients, opts \\ %{}) do
538 fetch_activities_query(recipients, opts)
544 data = Upload.store(file, Application.get_env(:pleroma, :instance)[:dedupe_media])
545 Repo.insert(%Object{data: data})
548 def user_data_from_user_object(data) do
550 data["icon"]["url"] &&
553 "url" => [%{"href" => data["icon"]["url"]}]
557 data["image"]["url"] &&
560 "url" => [%{"href" => data["image"]["url"]}]
563 locked = data["manuallyApprovesFollowers"] || false
564 data = Transmogrifier.maybe_fix_user_object(data)
569 "ap_enabled" => true,
570 "source_data" => data,
575 nickname: "#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}",
577 follower_address: data["followers"],
584 def fetch_and_prepare_user_from_ap_id(ap_id) do
585 with {:ok, %{status_code: 200, body: body}} <-
586 @httpoison.get(ap_id, [Accept: "application/activity+json"], follow_redirect: true),
587 {:ok, data} <- Jason.decode(body) do
588 user_data_from_user_object(data)
590 e -> Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
594 def make_user_from_ap_id(ap_id) do
595 if _user = User.get_by_ap_id(ap_id) do
596 Transmogrifier.upgrade_user_from_ap_id(ap_id)
598 with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
599 User.insert_or_update_user(data)
606 def make_user_from_nickname(nickname) do
607 with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
608 make_user_from_ap_id(ap_id)
610 _e -> {:error, "No AP id in WebFinger"}
614 @quarantined_instances Keyword.get(@instance, :quarantined_instances, [])
616 def should_federate?(inbox, public) do
620 inbox_info = URI.parse(inbox)
621 inbox_info.host not in @quarantined_instances
625 def publish(actor, activity) do
627 if actor.follower_address in activity.recipients do
628 {:ok, followers} = User.get_followers(actor)
629 followers |> Enum.filter(&(!&1.local))
634 public = is_public?(activity)
637 (Pleroma.Web.Salmon.remote_users(activity) ++ followers)
638 |> Enum.filter(fn user -> User.ap_enabled?(user) end)
639 |> Enum.map(fn %{info: %{"source_data" => data}} ->
640 (data["endpoints"] && data["endpoints"]["sharedInbox"]) || data["inbox"]
643 |> Enum.filter(fn inbox -> should_federate?(inbox, public) end)
645 {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
646 json = Jason.encode!(data)
648 Enum.each(remote_inboxes, fn inbox ->
649 Federator.enqueue(:publish_single_ap, %{
653 id: activity.data["id"]
658 def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
659 Logger.info("Federating #{id} to #{inbox}")
660 host = URI.parse(inbox).host
662 digest = "SHA-256=" <> (:crypto.hash(:sha256, json) |> Base.encode64())
665 Pleroma.Web.HTTPSignatures.sign(actor, %{
667 "content-length": byte_size(json),
675 {"Content-Type", "application/activity+json"},
676 {"signature", signature},
679 hackney: [pool: :default]
684 # This will create a Create activity, which we need internally at the moment.
685 def fetch_object_from_id(id) do
686 if object = Object.get_cached_by_ap_id(id) do
689 Logger.info("Fetching #{id} via AP")
691 with true <- String.starts_with?(id, "http"),
692 {:ok, %{body: body, status_code: code}} when code in 200..299 <-
695 [Accept: "application/activity+json"],
696 follow_redirect: true,
700 {:ok, data} <- Jason.decode(body),
701 nil <- Object.normalize(data),
706 "actor" => data["attributedTo"],
709 {:ok, activity} <- Transmogrifier.handle_incoming(params) do
710 {:ok, Object.normalize(activity.data["object"])}
712 object = %Object{} ->
716 Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
718 case OStatus.fetch_activity_from_url(id) do
719 {:ok, [activity | _]} -> {:ok, Object.normalize(activity.data["object"])}
726 def is_public?(activity) do
727 "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++
728 (activity.data["cc"] || []))
731 def visible_for_user?(activity, nil) do
735 def visible_for_user?(activity, user) do
736 x = [user.ap_id | user.following]
737 y = activity.data["to"] ++ (activity.data["cc"] || [])
738 visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))