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 defp get_recipients(%{"type" => "Announce"} = data) do
21 actor = User.get_cached_by_ap_id(data["actor"])
24 |> Enum.filter(fn recipient ->
25 case User.get_cached_by_ap_id(recipient) do
30 User.following?(user, actor)
37 defp get_recipients(data) do
44 defp check_actor_is_active(actor) do
45 if not is_nil(actor) do
46 with user <- User.get_cached_by_ap_id(actor),
47 nil <- user.info["deactivated"] do
57 def insert(map, local \\ true) when is_map(map) do
58 with nil <- Activity.normalize(map),
59 map <- lazy_put_activity_defaults(map),
60 :ok <- check_actor_is_active(map["actor"]),
61 {:ok, map} <- MRF.filter(map),
62 :ok <- insert_full_object(map) do
63 {recipients, _, _} = get_recipients(map)
66 Repo.insert(%Activity{
70 recipients: recipients
73 Notification.create_notifications(activity)
77 %Activity{} = activity -> {:ok, activity}
78 error -> {:error, error}
82 def stream_out(activity) do
83 public = "https://www.w3.org/ns/activitystreams#Public"
85 if activity.data["type"] in ["Create", "Announce"] do
86 Pleroma.Web.Streamer.stream("user", activity)
87 Pleroma.Web.Streamer.stream("list", activity)
89 if Enum.member?(activity.data["to"], public) do
90 Pleroma.Web.Streamer.stream("public", activity)
93 Pleroma.Web.Streamer.stream("public:local", activity)
96 activity.data["object"]
98 |> Enum.filter(fn tag -> is_bitstring(tag) end)
99 |> Enum.map(fn tag -> Pleroma.Web.Streamer.stream("hashtag:" <> tag, activity) end)
101 if activity.data["object"]["attachment"] != [] do
102 Pleroma.Web.Streamer.stream("public:media", activity)
105 Pleroma.Web.Streamer.stream("public:local:media", activity)
109 if !Enum.member?(activity.data["cc"] || [], public) &&
112 User.get_by_ap_id(activity.data["actor"]).follower_address
114 do: Pleroma.Web.Streamer.stream("direct", activity)
119 def create(%{to: to, actor: actor, context: context, object: object} = params) do
120 additional = params[:additional] || %{}
121 # only accept false as false value
122 local = !(params[:local] == false)
123 published = params[:published]
127 %{to: to, actor: actor, published: published, context: context, object: object},
130 {:ok, activity} <- insert(create_data, local),
131 :ok <- maybe_federate(activity),
132 {:ok, _actor} <- User.increase_note_count(actor) do
137 def accept(%{to: to, actor: actor, object: object} = params) do
138 # only accept false as false value
139 local = !(params[:local] == false)
141 with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
142 {:ok, activity} <- insert(data, local),
143 :ok <- maybe_federate(activity) do
148 def reject(%{to: to, actor: actor, object: object} = params) do
149 # only accept false as false value
150 local = !(params[:local] == false)
152 with data <- %{"to" => to, "type" => "Reject", "actor" => actor, "object" => object},
153 {:ok, activity} <- insert(data, local),
154 :ok <- maybe_federate(activity) do
159 def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
160 # only accept false as false value
161 local = !(params[:local] == false)
170 {:ok, activity} <- insert(data, local),
171 :ok <- maybe_federate(activity) do
176 # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
178 %User{ap_id: ap_id} = user,
179 %Object{data: %{"id" => _}} = object,
183 with nil <- get_existing_like(ap_id, object),
184 like_data <- make_like_data(user, object, activity_id),
185 {:ok, activity} <- insert(like_data, local),
186 {:ok, object} <- add_like_to_object(activity, object),
187 :ok <- maybe_federate(activity) do
188 {:ok, activity, object}
190 %Activity{} = activity -> {:ok, activity, object}
191 error -> {:error, error}
201 with %Activity{} = like_activity <- get_existing_like(actor.ap_id, object),
202 unlike_data <- make_unlike_data(actor, like_activity, activity_id),
203 {:ok, unlike_activity} <- insert(unlike_data, local),
204 {:ok, _activity} <- Repo.delete(like_activity),
205 {:ok, object} <- remove_like_from_object(like_activity, object),
206 :ok <- maybe_federate(unlike_activity) do
207 {:ok, unlike_activity, like_activity, object}
214 %User{ap_id: _} = user,
215 %Object{data: %{"id" => _}} = object,
219 with true <- is_public?(object),
220 announce_data <- make_announce_data(user, object, activity_id),
221 {:ok, activity} <- insert(announce_data, local),
222 {:ok, object} <- add_announce_to_object(activity, object),
223 :ok <- maybe_federate(activity) do
224 {:ok, activity, object}
226 error -> {:error, error}
236 with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
237 unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
238 {:ok, unannounce_activity} <- insert(unannounce_data, local),
239 :ok <- maybe_federate(unannounce_activity),
240 {:ok, _activity} <- Repo.delete(announce_activity),
241 {:ok, object} <- remove_announce_from_object(announce_activity, object) do
242 {:ok, unannounce_activity, object}
248 def follow(follower, followed, activity_id \\ nil, local \\ true) do
249 with data <- make_follow_data(follower, followed, activity_id),
250 {:ok, activity} <- insert(data, local),
251 :ok <- maybe_federate(activity) do
256 def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
257 with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
258 {:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
259 unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
260 {:ok, activity} <- insert(unfollow_data, local),
261 :ok <- maybe_federate(activity) do
266 def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
267 user = User.get_cached_by_ap_id(actor)
273 "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
276 with Repo.delete(object),
277 Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
278 {:ok, activity} <- insert(data, local),
279 :ok <- maybe_federate(activity),
280 {:ok, _actor} <- User.decrease_note_count(user) do
285 def block(blocker, blocked, activity_id \\ nil, local \\ true) do
286 ap_config = Application.get_env(:pleroma, :activitypub)
287 unfollow_blocked = Keyword.get(ap_config, :unfollow_blocked)
288 outgoing_blocks = Keyword.get(ap_config, :outgoing_blocks)
290 with true <- unfollow_blocked do
291 follow_activity = fetch_latest_follow(blocker, blocked)
293 if follow_activity do
294 unfollow(blocker, blocked, nil, local)
298 with true <- outgoing_blocks,
299 block_data <- make_block_data(blocker, blocked, activity_id),
300 {:ok, activity} <- insert(block_data, local),
301 :ok <- maybe_federate(activity) do
308 def unblock(blocker, blocked, activity_id \\ nil, local \\ true) do
309 with %Activity{} = block_activity <- fetch_latest_block(blocker, blocked),
310 unblock_data <- make_unblock_data(blocker, blocked, block_activity, activity_id),
311 {:ok, activity} <- insert(unblock_data, local),
312 :ok <- maybe_federate(activity) do
317 def fetch_activities_for_context(context, opts \\ %{}) do
318 public = ["https://www.w3.org/ns/activitystreams#Public"]
321 if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
323 query = from(activity in Activity)
327 |> restrict_blocked(opts)
328 |> restrict_recipients(recipients, opts["user"])
335 "?->>'type' = ? and ?->>'context' = ?",
341 order_by: [desc: :id]
347 def fetch_public_activities(opts \\ %{}) do
348 q = fetch_activities_query(["https://www.w3.org/ns/activitystreams#Public"], opts)
351 |> restrict_unlisted()
356 @valid_visibilities ~w[direct unlisted public private]
358 defp restrict_visibility(query, %{visibility: "direct"}) do
359 public = "https://www.w3.org/ns/activitystreams#Public"
363 join: sender in User,
364 on: sender.ap_id == activity.actor,
365 # Are non-direct statuses with no to/cc possible?
369 [^public, sender.follower_address],
375 defp restrict_visibility(_query, %{visibility: visibility})
376 when visibility not in @valid_visibilities do
377 Logger.error("Could not restrict visibility to #{visibility}")
380 defp restrict_visibility(query, _visibility), do: query
382 def fetch_user_activities(user, reading_user, params \\ %{}) do
385 |> Map.put("type", ["Create", "Announce"])
386 |> Map.put("actor_id", user.ap_id)
387 |> Map.put("whole_db", true)
391 ["https://www.w3.org/ns/activitystreams#Public"] ++
392 [reading_user.ap_id | reading_user.following]
394 ["https://www.w3.org/ns/activitystreams#Public"]
397 fetch_activities(recipients, params)
401 defp restrict_since(query, %{"since_id" => since_id}) do
402 from(activity in query, where: activity.id > ^since_id)
405 defp restrict_since(query, _), do: query
407 defp restrict_tag(query, %{"tag" => tag}) do
410 where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
414 defp restrict_tag(query, _), do: query
416 defp restrict_to_cc(query, recipients_to, recipients_cc) do
421 "(?->'to' \\?| ?) or (?->'cc' \\?| ?)",
430 defp restrict_recipients(query, [], _user), do: query
432 defp restrict_recipients(query, recipients, nil) do
433 from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
436 defp restrict_recipients(query, recipients, user) do
439 where: fragment("? && ?", ^recipients, activity.recipients),
440 or_where: activity.actor == ^user.ap_id
444 defp restrict_limit(query, %{"limit" => limit}) do
445 from(activity in query, limit: ^limit)
448 defp restrict_limit(query, _), do: query
450 defp restrict_local(query, %{"local_only" => true}) do
451 from(activity in query, where: activity.local == true)
454 defp restrict_local(query, _), do: query
456 defp restrict_max(query, %{"max_id" => max_id}) do
457 from(activity in query, where: activity.id < ^max_id)
460 defp restrict_max(query, _), do: query
462 defp restrict_actor(query, %{"actor_id" => actor_id}) do
463 from(activity in query, where: activity.actor == ^actor_id)
466 defp restrict_actor(query, _), do: query
468 defp restrict_type(query, %{"type" => type}) when is_binary(type) do
469 restrict_type(query, %{"type" => [type]})
472 defp restrict_type(query, %{"type" => type}) do
473 from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
476 defp restrict_type(query, _), do: query
478 defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
481 where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
485 defp restrict_favorited_by(query, _), do: query
487 defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
490 where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[])
494 defp restrict_media(query, _), do: query
496 defp restrict_replies(query, %{"exclude_replies" => val}) when val == "true" or val == "1" do
499 where: fragment("?->'object'->>'inReplyTo' is null", activity.data)
503 defp restrict_replies(query, _), do: query
505 # Only search through last 100_000 activities by default
506 defp restrict_recent(query, %{"whole_db" => true}), do: query
508 defp restrict_recent(query, _) do
509 since = (Repo.aggregate(Activity, :max, :id) || 0) - 100_000
511 from(activity in query, where: activity.id > ^since)
514 defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
515 blocks = info["blocks"] || []
516 domain_blocks = info["domain_blocks"] || []
520 where: fragment("not (? = ANY(?))", activity.actor, ^blocks),
521 where: fragment("not (?->'to' \\?| ?)", activity.data, ^blocks),
522 where: fragment("not (split_part(?, '/', 3) = ANY(?))", activity.actor, ^domain_blocks)
526 defp restrict_blocked(query, _), do: query
528 defp restrict_unlisted(query) do
533 "not (coalesce(?->'cc', '{}'::jsonb) \\?| ?)",
535 ^["https://www.w3.org/ns/activitystreams#Public"]
540 def fetch_activities_query(recipients, opts \\ %{}) do
543 activity in Activity,
545 order_by: [fragment("? desc nulls last", activity.id)]
549 |> restrict_recipients(recipients, opts["user"])
550 |> restrict_tag(opts)
551 |> restrict_since(opts)
552 |> restrict_local(opts)
553 |> restrict_limit(opts)
554 |> restrict_max(opts)
555 |> restrict_actor(opts)
556 |> restrict_type(opts)
557 |> restrict_favorited_by(opts)
558 |> restrict_recent(opts)
559 |> restrict_blocked(opts)
560 |> restrict_media(opts)
561 |> restrict_visibility(opts)
562 |> restrict_replies(opts)
565 def fetch_activities(recipients, opts \\ %{}) do
566 fetch_activities_query(recipients, opts)
571 def fetch_activities_bounded(recipients_to, recipients_cc, opts \\ %{}) do
572 fetch_activities_query([], opts)
573 |> restrict_to_cc(recipients_to, recipients_cc)
579 data = Upload.store(file, Application.get_env(:pleroma, :instance)[:dedupe_media])
580 Repo.insert(%Object{data: data})
583 def user_data_from_user_object(data) do
585 data["icon"]["url"] &&
588 "url" => [%{"href" => data["icon"]["url"]}]
592 data["image"]["url"] &&
595 "url" => [%{"href" => data["image"]["url"]}]
598 locked = data["manuallyApprovesFollowers"] || false
599 data = Transmogrifier.maybe_fix_user_object(data)
604 "ap_enabled" => true,
605 "source_data" => data,
611 follower_address: data["followers"],
615 # nickname can be nil because of virtual actors
617 if data["preferredUsername"] do
621 "#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}"
624 Map.put(user_data, :nickname, nil)
630 def fetch_and_prepare_user_from_ap_id(ap_id) do
631 with {:ok, %{status_code: 200, body: body}} <-
632 @httpoison.get(ap_id, [Accept: "application/activity+json"], follow_redirect: true),
633 {:ok, data} <- Jason.decode(body) do
634 user_data_from_user_object(data)
636 e -> Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
640 def make_user_from_ap_id(ap_id) do
641 if _user = User.get_by_ap_id(ap_id) do
642 Transmogrifier.upgrade_user_from_ap_id(ap_id)
644 with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
645 User.insert_or_update_user(data)
652 def make_user_from_nickname(nickname) do
653 with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
654 make_user_from_ap_id(ap_id)
656 _e -> {:error, "No AP id in WebFinger"}
660 @quarantined_instances Keyword.get(@instance, :quarantined_instances, [])
662 def should_federate?(inbox, public) do
666 inbox_info = URI.parse(inbox)
667 inbox_info.host not in @quarantined_instances
671 def publish(actor, activity) do
673 if actor.follower_address in activity.recipients do
674 {:ok, followers} = User.get_followers(actor)
675 followers |> Enum.filter(&(!&1.local))
680 public = is_public?(activity)
683 (Pleroma.Web.Salmon.remote_users(activity) ++ followers)
684 |> Enum.filter(fn user -> User.ap_enabled?(user) end)
685 |> Enum.map(fn %{info: %{"source_data" => data}} ->
686 (is_map(data["endpoints"]) && Map.get(data["endpoints"], "sharedInbox")) || data["inbox"]
689 |> Enum.filter(fn inbox -> should_federate?(inbox, public) end)
691 {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
692 json = Jason.encode!(data)
694 Enum.each(remote_inboxes, fn inbox ->
695 Federator.enqueue(:publish_single_ap, %{
699 id: activity.data["id"]
704 def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
705 Logger.info("Federating #{id} to #{inbox}")
706 host = URI.parse(inbox).host
708 digest = "SHA-256=" <> (:crypto.hash(:sha256, json) |> Base.encode64())
711 Pleroma.Web.HTTPSignatures.sign(actor, %{
713 "content-length": byte_size(json),
721 {"Content-Type", "application/activity+json"},
722 {"signature", signature},
725 hackney: [pool: :default]
730 # This will create a Create activity, which we need internally at the moment.
731 def fetch_object_from_id(id) do
732 if object = Object.get_cached_by_ap_id(id) do
735 Logger.info("Fetching #{id} via AP")
737 with true <- String.starts_with?(id, "http"),
738 {:ok, %{body: body, status_code: code}} when code in 200..299 <-
741 [Accept: "application/activity+json"],
742 follow_redirect: true,
746 {:ok, data} <- Jason.decode(body),
747 nil <- Object.normalize(data),
752 "actor" => data["attributedTo"],
755 :ok <- Transmogrifier.contain_origin(id, params),
756 {:ok, activity} <- Transmogrifier.handle_incoming(params) do
757 {:ok, Object.normalize(activity.data["object"])}
759 object = %Object{} ->
763 Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
765 case OStatus.fetch_activity_from_url(id) do
766 {:ok, [activity | _]} -> {:ok, Object.normalize(activity.data["object"])}
773 def is_public?(activity) do
774 "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++
775 (activity.data["cc"] || []))
778 def visible_for_user?(activity, nil) do
782 def visible_for_user?(activity, user) do
783 x = [user.ap_id | user.following]
784 y = activity.data["to"] ++ (activity.data["cc"] || [])
785 visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))