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 activity.data["object"]
89 |> Enum.filter(fn tag -> is_bitstring(tag) end)
90 |> Enum.map(fn tag -> Pleroma.Web.Streamer.stream("hashtag:" <> tag, activity) end)
92 if activity.data["object"]["attachment"] != [] do
93 Pleroma.Web.Streamer.stream("public:media", activity)
96 Pleroma.Web.Streamer.stream("public:local:media", activity)
100 if !Enum.member?(activity.data["cc"] || [], public) &&
103 User.get_by_ap_id(activity.data["actor"]).follower_address
105 do: Pleroma.Web.Streamer.stream("direct", activity)
110 def create(%{to: to, actor: actor, context: context, object: object} = params) do
111 additional = params[:additional] || %{}
112 # only accept false as false value
113 local = !(params[:local] == false)
114 published = params[:published]
118 %{to: to, actor: actor, published: published, context: context, object: object},
121 {:ok, activity} <- insert(create_data, local),
122 :ok <- maybe_federate(activity),
123 {:ok, _actor} <- User.increase_note_count(actor) do
128 def accept(%{to: to, actor: actor, object: object} = params) do
129 # only accept false as false value
130 local = !(params[:local] == false)
132 with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
133 {:ok, activity} <- insert(data, local),
134 :ok <- maybe_federate(activity) do
139 def reject(%{to: to, actor: actor, object: object} = params) do
140 # only accept false as false value
141 local = !(params[:local] == false)
143 with data <- %{"to" => to, "type" => "Reject", "actor" => actor, "object" => object},
144 {:ok, activity} <- insert(data, local),
145 :ok <- maybe_federate(activity) do
150 def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
151 # only accept false as false value
152 local = !(params[:local] == false)
161 {:ok, activity} <- insert(data, local),
162 :ok <- maybe_federate(activity) do
167 # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
169 %User{ap_id: ap_id} = user,
170 %Object{data: %{"id" => _}} = object,
174 with nil <- get_existing_like(ap_id, object),
175 like_data <- make_like_data(user, object, activity_id),
176 {:ok, activity} <- insert(like_data, local),
177 {:ok, object} <- add_like_to_object(activity, object),
178 :ok <- maybe_federate(activity) do
179 {:ok, activity, object}
181 %Activity{} = activity -> {:ok, activity, object}
182 error -> {:error, error}
192 with %Activity{} = like_activity <- get_existing_like(actor.ap_id, object),
193 unlike_data <- make_unlike_data(actor, like_activity, activity_id),
194 {:ok, unlike_activity} <- insert(unlike_data, local),
195 {:ok, _activity} <- Repo.delete(like_activity),
196 {:ok, object} <- remove_like_from_object(like_activity, object),
197 :ok <- maybe_federate(unlike_activity) do
198 {:ok, unlike_activity, like_activity, object}
205 %User{ap_id: _} = user,
206 %Object{data: %{"id" => _}} = object,
210 with true <- is_public?(object),
211 announce_data <- make_announce_data(user, object, activity_id),
212 {:ok, activity} <- insert(announce_data, local),
213 {:ok, object} <- add_announce_to_object(activity, object),
214 :ok <- maybe_federate(activity) do
215 {:ok, activity, object}
217 error -> {:error, error}
227 with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
228 unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
229 {:ok, unannounce_activity} <- insert(unannounce_data, local),
230 :ok <- maybe_federate(unannounce_activity),
231 {:ok, _activity} <- Repo.delete(announce_activity),
232 {:ok, object} <- remove_announce_from_object(announce_activity, object) do
233 {:ok, unannounce_activity, object}
239 def follow(follower, followed, activity_id \\ nil, local \\ true) do
240 with data <- make_follow_data(follower, followed, activity_id),
241 {:ok, activity} <- insert(data, local),
242 :ok <- maybe_federate(activity) do
247 def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
248 with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
249 {:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
250 unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
251 {:ok, activity} <- insert(unfollow_data, local),
252 :ok <- maybe_federate(activity) do
257 def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
258 user = User.get_cached_by_ap_id(actor)
264 "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
267 with Repo.delete(object),
268 Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
269 {:ok, activity} <- insert(data, local),
270 :ok <- maybe_federate(activity),
271 {:ok, _actor} <- User.decrease_note_count(user) do
276 def block(blocker, blocked, activity_id \\ nil, local \\ true) do
277 ap_config = Application.get_env(:pleroma, :activitypub)
278 unfollow_blocked = Keyword.get(ap_config, :unfollow_blocked)
279 outgoing_blocks = Keyword.get(ap_config, :outgoing_blocks)
281 with true <- unfollow_blocked do
282 follow_activity = fetch_latest_follow(blocker, blocked)
284 if follow_activity do
285 unfollow(blocker, blocked, nil, local)
289 with true <- outgoing_blocks,
290 block_data <- make_block_data(blocker, blocked, activity_id),
291 {:ok, activity} <- insert(block_data, local),
292 :ok <- maybe_federate(activity) do
299 def unblock(blocker, blocked, activity_id \\ nil, local \\ true) do
300 with %Activity{} = block_activity <- fetch_latest_block(blocker, blocked),
301 unblock_data <- make_unblock_data(blocker, blocked, block_activity, activity_id),
302 {:ok, activity} <- insert(unblock_data, local),
303 :ok <- maybe_federate(activity) do
308 def fetch_activities_for_context(context, opts \\ %{}) do
309 public = ["https://www.w3.org/ns/activitystreams#Public"]
312 if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
314 query = from(activity in Activity)
318 |> restrict_blocked(opts)
319 |> restrict_recipients(recipients, opts["user"])
326 "?->>'type' = ? and ?->>'context' = ?",
332 order_by: [desc: :id]
338 def fetch_public_activities(opts \\ %{}) do
339 q = fetch_activities_query(["https://www.w3.org/ns/activitystreams#Public"], opts)
342 |> restrict_unlisted()
347 @valid_visibilities ~w[direct unlisted public private]
349 defp restrict_visibility(query, %{visibility: "direct"}) do
350 public = "https://www.w3.org/ns/activitystreams#Public"
354 join: sender in User,
355 on: sender.ap_id == activity.actor,
356 # Are non-direct statuses with no to/cc possible?
360 [^public, sender.follower_address],
366 defp restrict_visibility(_query, %{visibility: visibility})
367 when visibility not in @valid_visibilities do
368 Logger.error("Could not restrict visibility to #{visibility}")
371 defp restrict_visibility(query, _visibility), do: query
373 def fetch_user_activities(user, reading_user, params \\ %{}) do
376 |> Map.put("type", ["Create", "Announce"])
377 |> Map.put("actor_id", user.ap_id)
378 |> Map.put("whole_db", true)
382 ["https://www.w3.org/ns/activitystreams#Public"] ++
383 [reading_user.ap_id | reading_user.following]
385 ["https://www.w3.org/ns/activitystreams#Public"]
388 fetch_activities(recipients, params)
392 defp restrict_since(query, %{"since_id" => since_id}) do
393 from(activity in query, where: activity.id > ^since_id)
396 defp restrict_since(query, _), do: query
398 defp restrict_tag(query, %{"tag" => tag}) do
401 where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
405 defp restrict_tag(query, _), do: query
407 defp restrict_recipients(query, [], _user), do: query
409 defp restrict_recipients(query, recipients, nil) do
410 from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
413 defp restrict_recipients(query, recipients, user) do
416 where: fragment("? && ?", ^recipients, activity.recipients),
417 or_where: activity.actor == ^user.ap_id
421 defp restrict_limit(query, %{"limit" => limit}) do
422 from(activity in query, limit: ^limit)
425 defp restrict_limit(query, _), do: query
427 defp restrict_local(query, %{"local_only" => true}) do
428 from(activity in query, where: activity.local == true)
431 defp restrict_local(query, _), do: query
433 defp restrict_max(query, %{"max_id" => max_id}) do
434 from(activity in query, where: activity.id < ^max_id)
437 defp restrict_max(query, _), do: query
439 defp restrict_actor(query, %{"actor_id" => actor_id}) do
440 from(activity in query, where: activity.actor == ^actor_id)
443 defp restrict_actor(query, _), do: query
445 defp restrict_type(query, %{"type" => type}) when is_binary(type) do
446 restrict_type(query, %{"type" => [type]})
449 defp restrict_type(query, %{"type" => type}) do
450 from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
453 defp restrict_type(query, _), do: query
455 defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
458 where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
462 defp restrict_favorited_by(query, _), do: query
464 defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
467 where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[])
471 defp restrict_media(query, _), do: query
473 defp restrict_replies(query, %{"exclude_replies" => val}) when val == "true" or val == "1" do
476 where: fragment("?->'object'->>'inReplyTo' is null", activity.data)
480 defp restrict_replies(query, _), do: query
482 # Only search through last 100_000 activities by default
483 defp restrict_recent(query, %{"whole_db" => true}), do: query
485 defp restrict_recent(query, _) do
486 since = (Repo.aggregate(Activity, :max, :id) || 0) - 100_000
488 from(activity in query, where: activity.id > ^since)
491 defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
492 blocks = info["blocks"] || []
493 domain_blocks = info["domain_blocks"] || []
497 where: fragment("not (? = ANY(?))", activity.actor, ^blocks),
498 where: fragment("not (?->'to' \\?| ?)", activity.data, ^blocks),
499 where: fragment("not (split_part(?, '/', 3) = ANY(?))", activity.actor, ^domain_blocks)
503 defp restrict_blocked(query, _), do: query
505 defp restrict_unlisted(query) do
510 "not (coalesce(?->'cc', '{}'::jsonb) \\?| ?)",
512 ^["https://www.w3.org/ns/activitystreams#Public"]
517 def fetch_activities_query(recipients, opts \\ %{}) do
520 activity in Activity,
522 order_by: [fragment("? desc nulls last", activity.id)]
526 |> restrict_recipients(recipients, opts["user"])
527 |> restrict_tag(opts)
528 |> restrict_since(opts)
529 |> restrict_local(opts)
530 |> restrict_limit(opts)
531 |> restrict_max(opts)
532 |> restrict_actor(opts)
533 |> restrict_type(opts)
534 |> restrict_favorited_by(opts)
535 |> restrict_recent(opts)
536 |> restrict_blocked(opts)
537 |> restrict_media(opts)
538 |> restrict_visibility(opts)
539 |> restrict_replies(opts)
542 def fetch_activities(recipients, opts \\ %{}) do
543 fetch_activities_query(recipients, opts)
549 data = Upload.store(file, Application.get_env(:pleroma, :instance)[:dedupe_media])
550 Repo.insert(%Object{data: data})
553 def user_data_from_user_object(data) do
555 data["icon"]["url"] &&
558 "url" => [%{"href" => data["icon"]["url"]}]
562 data["image"]["url"] &&
565 "url" => [%{"href" => data["image"]["url"]}]
568 locked = data["manuallyApprovesFollowers"] || false
569 data = Transmogrifier.maybe_fix_user_object(data)
574 "ap_enabled" => true,
575 "source_data" => data,
581 follower_address: data["followers"],
585 # nickname can be nil because of virtual actors
587 if data["preferredUsername"] do
591 "#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}"
594 Map.put(user_data, :nickname, nil)
600 def fetch_and_prepare_user_from_ap_id(ap_id) do
601 with {:ok, %{status_code: 200, body: body}} <-
602 @httpoison.get(ap_id, [Accept: "application/activity+json"], follow_redirect: true),
603 {:ok, data} <- Jason.decode(body) do
604 user_data_from_user_object(data)
606 e -> Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
610 def make_user_from_ap_id(ap_id) do
611 if _user = User.get_by_ap_id(ap_id) do
612 Transmogrifier.upgrade_user_from_ap_id(ap_id)
614 with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
615 User.insert_or_update_user(data)
622 def make_user_from_nickname(nickname) do
623 with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
624 make_user_from_ap_id(ap_id)
626 _e -> {:error, "No AP id in WebFinger"}
630 @quarantined_instances Keyword.get(@instance, :quarantined_instances, [])
632 def should_federate?(inbox, public) do
636 inbox_info = URI.parse(inbox)
637 inbox_info.host not in @quarantined_instances
641 def publish(actor, activity) do
643 if actor.follower_address in activity.recipients do
644 {:ok, followers} = User.get_followers(actor)
645 followers |> Enum.filter(&(!&1.local))
650 public = is_public?(activity)
653 (Pleroma.Web.Salmon.remote_users(activity) ++ followers)
654 |> Enum.filter(fn user -> User.ap_enabled?(user) end)
655 |> Enum.map(fn %{info: %{"source_data" => data}} ->
656 (data["endpoints"] && data["endpoints"]["sharedInbox"]) || data["inbox"]
659 |> Enum.filter(fn inbox -> should_federate?(inbox, public) end)
661 {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
662 json = Jason.encode!(data)
664 Enum.each(remote_inboxes, fn inbox ->
665 Federator.enqueue(:publish_single_ap, %{
669 id: activity.data["id"]
674 def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
675 Logger.info("Federating #{id} to #{inbox}")
676 host = URI.parse(inbox).host
678 digest = "SHA-256=" <> (:crypto.hash(:sha256, json) |> Base.encode64())
681 Pleroma.Web.HTTPSignatures.sign(actor, %{
683 "content-length": byte_size(json),
691 {"Content-Type", "application/activity+json"},
692 {"signature", signature},
695 hackney: [pool: :default]
700 # This will create a Create activity, which we need internally at the moment.
701 def fetch_object_from_id(id) do
702 if object = Object.get_cached_by_ap_id(id) do
705 Logger.info("Fetching #{id} via AP")
707 with true <- String.starts_with?(id, "http"),
708 {:ok, %{body: body, status_code: code}} when code in 200..299 <-
711 [Accept: "application/activity+json"],
712 follow_redirect: true,
716 {:ok, data} <- Jason.decode(body),
717 nil <- Object.normalize(data),
722 "actor" => data["attributedTo"],
725 {:ok, activity} <- Transmogrifier.handle_incoming(params) do
726 {:ok, Object.normalize(activity.data["object"])}
728 object = %Object{} ->
732 Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
734 case OStatus.fetch_activity_from_url(id) do
735 {:ok, [activity | _]} -> {:ok, Object.normalize(activity.data["object"])}
742 def is_public?(activity) do
743 "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++
744 (activity.data["cc"] || []))
747 def visible_for_user?(activity, nil) do
751 def visible_for_user?(activity, user) do
752 x = [user.ap_id | user.following]
753 y = activity.data["to"] ++ (activity.data["cc"] || [])
754 visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))