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"]["tag"]
88 |> Enum.map(fn tag -> Pleroma.Web.Streamer.stream("hashtag:" <> tag, activity) end)
90 if activity.data["object"]["attachment"] != [] do
91 Pleroma.Web.Streamer.stream("public:media", activity)
94 Pleroma.Web.Streamer.stream("public:local:media", activity)
98 if !Enum.member?(activity.data["cc"] || [], public) &&
101 User.get_by_ap_id(activity.data["actor"]).follower_address
103 do: Pleroma.Web.Streamer.stream("direct", activity)
108 def create(%{to: to, actor: actor, context: context, object: object} = params) do
109 additional = params[:additional] || %{}
110 # only accept false as false value
111 local = !(params[:local] == false)
112 published = params[:published]
116 %{to: to, actor: actor, published: published, context: context, object: object},
119 {:ok, activity} <- insert(create_data, local),
120 :ok <- maybe_federate(activity),
121 {:ok, _actor} <- User.increase_note_count(actor) do
126 def accept(%{to: to, actor: actor, object: object} = params) do
127 # only accept false as false value
128 local = !(params[:local] == false)
130 with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
131 {:ok, activity} <- insert(data, local),
132 :ok <- maybe_federate(activity) do
137 def reject(%{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" => "Reject", "actor" => actor, "object" => object},
142 {:ok, activity} <- insert(data, local),
143 :ok <- maybe_federate(activity) do
148 def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
149 # only accept false as false value
150 local = !(params[:local] == false)
159 {:ok, activity} <- insert(data, local),
160 :ok <- maybe_federate(activity) do
165 # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
167 %User{ap_id: ap_id} = user,
168 %Object{data: %{"id" => _}} = object,
172 with nil <- get_existing_like(ap_id, object),
173 like_data <- make_like_data(user, object, activity_id),
174 {:ok, activity} <- insert(like_data, local),
175 {:ok, object} <- add_like_to_object(activity, object),
176 :ok <- maybe_federate(activity) do
177 {:ok, activity, object}
179 %Activity{} = activity -> {:ok, activity, object}
180 error -> {:error, error}
190 with %Activity{} = like_activity <- get_existing_like(actor.ap_id, object),
191 unlike_data <- make_unlike_data(actor, like_activity, activity_id),
192 {:ok, unlike_activity} <- insert(unlike_data, local),
193 {:ok, _activity} <- Repo.delete(like_activity),
194 {:ok, object} <- remove_like_from_object(like_activity, object),
195 :ok <- maybe_federate(unlike_activity) do
196 {:ok, unlike_activity, like_activity, object}
203 %User{ap_id: _} = user,
204 %Object{data: %{"id" => _}} = object,
208 with true <- is_public?(object),
209 announce_data <- make_announce_data(user, object, activity_id),
210 {:ok, activity} <- insert(announce_data, local),
211 {:ok, object} <- add_announce_to_object(activity, object),
212 :ok <- maybe_federate(activity) do
213 {:ok, activity, object}
215 error -> {:error, error}
225 with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
226 unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
227 {:ok, unannounce_activity} <- insert(unannounce_data, local),
228 :ok <- maybe_federate(unannounce_activity),
229 {:ok, _activity} <- Repo.delete(announce_activity),
230 {:ok, object} <- remove_announce_from_object(announce_activity, object) do
231 {:ok, unannounce_activity, object}
237 def follow(follower, followed, activity_id \\ nil, local \\ true) do
238 with data <- make_follow_data(follower, followed, activity_id),
239 {:ok, activity} <- insert(data, local),
240 :ok <- maybe_federate(activity) do
245 def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
246 with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
247 {:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
248 unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
249 {:ok, activity} <- insert(unfollow_data, local),
250 :ok <- maybe_federate(activity) do
255 def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
256 user = User.get_cached_by_ap_id(actor)
262 "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
265 with Repo.delete(object),
266 Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
267 {:ok, activity} <- insert(data, local),
268 :ok <- maybe_federate(activity),
269 {:ok, _actor} <- User.decrease_note_count(user) do
274 def block(blocker, blocked, activity_id \\ nil, local \\ true) do
275 ap_config = Application.get_env(:pleroma, :activitypub)
276 unfollow_blocked = Keyword.get(ap_config, :unfollow_blocked)
277 outgoing_blocks = Keyword.get(ap_config, :outgoing_blocks)
279 with true <- unfollow_blocked do
280 follow_activity = fetch_latest_follow(blocker, blocked)
282 if follow_activity do
283 unfollow(blocker, blocked, nil, local)
287 with true <- outgoing_blocks,
288 block_data <- make_block_data(blocker, blocked, activity_id),
289 {:ok, activity} <- insert(block_data, local),
290 :ok <- maybe_federate(activity) do
297 def unblock(blocker, blocked, activity_id \\ nil, local \\ true) do
298 with %Activity{} = block_activity <- fetch_latest_block(blocker, blocked),
299 unblock_data <- make_unblock_data(blocker, blocked, block_activity, activity_id),
300 {:ok, activity} <- insert(unblock_data, local),
301 :ok <- maybe_federate(activity) do
306 def fetch_activities_for_context(context, opts \\ %{}) do
307 public = ["https://www.w3.org/ns/activitystreams#Public"]
310 if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
312 query = from(activity in Activity)
316 |> restrict_blocked(opts)
317 |> restrict_recipients(recipients, opts["user"])
324 "?->>'type' = ? and ?->>'context' = ?",
330 order_by: [desc: :id]
336 def fetch_public_activities(opts \\ %{}) do
337 q = fetch_activities_query(["https://www.w3.org/ns/activitystreams#Public"], opts)
340 |> restrict_unlisted()
345 @valid_visibilities ~w[direct unlisted public private]
347 defp restrict_visibility(query, %{visibility: "direct"}) do
348 public = "https://www.w3.org/ns/activitystreams#Public"
352 join: sender in User,
353 on: sender.ap_id == activity.actor,
354 # Are non-direct statuses with no to/cc possible?
358 [^public, sender.follower_address],
364 defp restrict_visibility(_query, %{visibility: visibility})
365 when visibility not in @valid_visibilities do
366 Logger.error("Could not restrict visibility to #{visibility}")
369 defp restrict_visibility(query, _visibility), do: query
371 def fetch_user_activities(user, reading_user, params \\ %{}) do
374 |> Map.put("type", ["Create", "Announce"])
375 |> Map.put("actor_id", user.ap_id)
376 |> Map.put("whole_db", true)
380 ["https://www.w3.org/ns/activitystreams#Public"] ++
381 [reading_user.ap_id | reading_user.following]
383 ["https://www.w3.org/ns/activitystreams#Public"]
386 fetch_activities(recipients, params)
390 defp restrict_since(query, %{"since_id" => since_id}) do
391 from(activity in query, where: activity.id > ^since_id)
394 defp restrict_since(query, _), do: query
396 defp restrict_tag(query, %{"tag" => tag}) do
399 where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
403 defp restrict_tag(query, _), do: query
405 defp restrict_recipients(query, [], _user), do: query
407 defp restrict_recipients(query, recipients, nil) do
408 from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
411 defp restrict_recipients(query, recipients, user) do
414 where: fragment("? && ?", ^recipients, activity.recipients),
415 or_where: activity.actor == ^user.ap_id
419 defp restrict_limit(query, %{"limit" => limit}) do
420 from(activity in query, limit: ^limit)
423 defp restrict_limit(query, _), do: query
425 defp restrict_local(query, %{"local_only" => true}) do
426 from(activity in query, where: activity.local == true)
429 defp restrict_local(query, _), do: query
431 defp restrict_max(query, %{"max_id" => max_id}) do
432 from(activity in query, where: activity.id < ^max_id)
435 defp restrict_max(query, _), do: query
437 defp restrict_actor(query, %{"actor_id" => actor_id}) do
438 from(activity in query, where: activity.actor == ^actor_id)
441 defp restrict_actor(query, _), do: query
443 defp restrict_type(query, %{"type" => type}) when is_binary(type) do
444 restrict_type(query, %{"type" => [type]})
447 defp restrict_type(query, %{"type" => type}) do
448 from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
451 defp restrict_type(query, _), do: query
453 defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
456 where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
460 defp restrict_favorited_by(query, _), do: query
462 defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
465 where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[])
469 defp restrict_media(query, _), do: query
471 defp restrict_replies(query, %{"exclude_replies" => val}) when val == "true" or val == "1" do
474 where: fragment("?->'object'->>'inReplyTo' is null", activity.data)
478 defp restrict_replies(query, _), do: query
480 # Only search through last 100_000 activities by default
481 defp restrict_recent(query, %{"whole_db" => true}), do: query
483 defp restrict_recent(query, _) do
484 since = (Repo.aggregate(Activity, :max, :id) || 0) - 100_000
486 from(activity in query, where: activity.id > ^since)
489 defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
490 blocks = info["blocks"] || []
491 domain_blocks = info["domain_blocks"] || []
495 where: fragment("not (? = ANY(?))", activity.actor, ^blocks),
496 where: fragment("not (?->'to' \\?| ?)", activity.data, ^blocks),
497 where: fragment("not (split_part(?, '/', 3) = ANY(?))", activity.actor, ^domain_blocks)
501 defp restrict_blocked(query, _), do: query
503 defp restrict_unlisted(query) do
508 "not (coalesce(?->'cc', '{}'::jsonb) \\?| ?)",
510 ^["https://www.w3.org/ns/activitystreams#Public"]
515 def fetch_activities_query(recipients, opts \\ %{}) do
518 activity in Activity,
520 order_by: [fragment("? desc nulls last", activity.id)]
524 |> restrict_recipients(recipients, opts["user"])
525 |> restrict_tag(opts)
526 |> restrict_since(opts)
527 |> restrict_local(opts)
528 |> restrict_limit(opts)
529 |> restrict_max(opts)
530 |> restrict_actor(opts)
531 |> restrict_type(opts)
532 |> restrict_favorited_by(opts)
533 |> restrict_recent(opts)
534 |> restrict_blocked(opts)
535 |> restrict_media(opts)
536 |> restrict_visibility(opts)
537 |> restrict_replies(opts)
540 def fetch_activities(recipients, opts \\ %{}) do
541 fetch_activities_query(recipients, opts)
547 data = Upload.store(file, Application.get_env(:pleroma, :instance)[:dedupe_media])
548 Repo.insert(%Object{data: data})
551 def user_data_from_user_object(data) do
553 data["icon"]["url"] &&
556 "url" => [%{"href" => data["icon"]["url"]}]
560 data["image"]["url"] &&
563 "url" => [%{"href" => data["image"]["url"]}]
566 locked = data["manuallyApprovesFollowers"] || false
567 data = Transmogrifier.maybe_fix_user_object(data)
572 "ap_enabled" => true,
573 "source_data" => data,
579 follower_address: data["followers"],
583 # nickname can be nil because of virtual actors
585 if data["preferredUsername"] do
589 "#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}"
592 Map.put(user_data, :nickname, nil)
598 def fetch_and_prepare_user_from_ap_id(ap_id) do
599 with {:ok, %{status_code: 200, body: body}} <-
600 @httpoison.get(ap_id, [Accept: "application/activity+json"], follow_redirect: true),
601 {:ok, data} <- Jason.decode(body) do
602 user_data_from_user_object(data)
604 e -> Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
608 def make_user_from_ap_id(ap_id) do
609 if _user = User.get_by_ap_id(ap_id) do
610 Transmogrifier.upgrade_user_from_ap_id(ap_id)
612 with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
613 User.insert_or_update_user(data)
620 def make_user_from_nickname(nickname) do
621 with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
622 make_user_from_ap_id(ap_id)
624 _e -> {:error, "No AP id in WebFinger"}
628 @quarantined_instances Keyword.get(@instance, :quarantined_instances, [])
630 def should_federate?(inbox, public) do
634 inbox_info = URI.parse(inbox)
635 inbox_info.host not in @quarantined_instances
639 def publish(actor, activity) do
641 if actor.follower_address in activity.recipients do
642 {:ok, followers} = User.get_followers(actor)
643 followers |> Enum.filter(&(!&1.local))
648 public = is_public?(activity)
651 (Pleroma.Web.Salmon.remote_users(activity) ++ followers)
652 |> Enum.filter(fn user -> User.ap_enabled?(user) end)
653 |> Enum.map(fn %{info: %{"source_data" => data}} ->
654 (data["endpoints"] && data["endpoints"]["sharedInbox"]) || data["inbox"]
657 |> Enum.filter(fn inbox -> should_federate?(inbox, public) end)
659 {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
660 json = Jason.encode!(data)
662 Enum.each(remote_inboxes, fn inbox ->
663 Federator.enqueue(:publish_single_ap, %{
667 id: activity.data["id"]
672 def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
673 Logger.info("Federating #{id} to #{inbox}")
674 host = URI.parse(inbox).host
676 digest = "SHA-256=" <> (:crypto.hash(:sha256, json) |> Base.encode64())
679 Pleroma.Web.HTTPSignatures.sign(actor, %{
681 "content-length": byte_size(json),
689 {"Content-Type", "application/activity+json"},
690 {"signature", signature},
693 hackney: [pool: :default]
698 # This will create a Create activity, which we need internally at the moment.
699 def fetch_object_from_id(id) do
700 if object = Object.get_cached_by_ap_id(id) do
703 Logger.info("Fetching #{id} via AP")
705 with true <- String.starts_with?(id, "http"),
706 {:ok, %{body: body, status_code: code}} when code in 200..299 <-
709 [Accept: "application/activity+json"],
710 follow_redirect: true,
714 {:ok, data} <- Jason.decode(body),
715 nil <- Object.normalize(data),
720 "actor" => data["attributedTo"],
723 {:ok, activity} <- Transmogrifier.handle_incoming(params) do
724 {:ok, Object.normalize(activity.data["object"])}
726 object = %Object{} ->
730 Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
732 case OStatus.fetch_activity_from_url(id) do
733 {:ok, [activity | _]} -> {:ok, Object.normalize(activity.data["object"])}
740 def is_public?(activity) do
741 "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++
742 (activity.data["cc"] || []))
745 def visible_for_user?(activity, nil) do
749 def visible_for_user?(activity, user) do
750 x = [user.ap_id | user.following]
751 y = activity.data["to"] ++ (activity.data["cc"] || [])
752 visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))