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, recipients_to, recipients_cc} = get_recipients(map)
66 Repo.insert(%Activity{
70 recipients: recipients,
71 recipients_to: recipients_to,
72 recipients_cc: recipients_cc
75 Notification.create_notifications(activity)
79 %Activity{} = activity -> {:ok, activity}
80 error -> {:error, error}
84 def stream_out(activity) do
85 public = "https://www.w3.org/ns/activitystreams#Public"
87 if activity.data["type"] in ["Create", "Announce"] do
88 Pleroma.Web.Streamer.stream("user", activity)
89 Pleroma.Web.Streamer.stream("list", activity)
91 if Enum.member?(activity.data["to"], public) do
92 Pleroma.Web.Streamer.stream("public", activity)
95 Pleroma.Web.Streamer.stream("public:local", activity)
98 if activity.data["object"]["attachment"] != [] do
99 Pleroma.Web.Streamer.stream("public:media", activity)
102 Pleroma.Web.Streamer.stream("public:local:media", activity)
106 if !Enum.member?(activity.data["cc"] || [], public) &&
109 User.get_by_ap_id(activity.data["actor"]).follower_address
111 do: Pleroma.Web.Streamer.stream("direct", activity)
116 def create(%{to: to, actor: actor, context: context, object: object} = params) do
117 additional = params[:additional] || %{}
118 # only accept false as false value
119 local = !(params[:local] == false)
120 published = params[:published]
124 %{to: to, actor: actor, published: published, context: context, object: object},
127 {:ok, activity} <- insert(create_data, local),
128 :ok <- maybe_federate(activity),
129 {:ok, _actor} <- User.increase_note_count(actor) do
134 def accept(%{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" => "Accept", "actor" => actor, "object" => object},
139 {:ok, activity} <- insert(data, local),
140 :ok <- maybe_federate(activity) do
145 def reject(%{to: to, actor: actor, object: object} = params) do
146 # only accept false as false value
147 local = !(params[:local] == false)
149 with data <- %{"to" => to, "type" => "Reject", "actor" => actor, "object" => object},
150 {:ok, activity} <- insert(data, local),
151 :ok <- maybe_federate(activity) do
156 def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
157 # only accept false as false value
158 local = !(params[:local] == false)
167 {:ok, activity} <- insert(data, local),
168 :ok <- maybe_federate(activity) do
173 # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
175 %User{ap_id: ap_id} = user,
176 %Object{data: %{"id" => _}} = object,
180 with nil <- get_existing_like(ap_id, object),
181 like_data <- make_like_data(user, object, activity_id),
182 {:ok, activity} <- insert(like_data, local),
183 {:ok, object} <- add_like_to_object(activity, object),
184 :ok <- maybe_federate(activity) do
185 {:ok, activity, object}
187 %Activity{} = activity -> {:ok, activity, object}
188 error -> {:error, error}
198 with %Activity{} = like_activity <- get_existing_like(actor.ap_id, object),
199 unlike_data <- make_unlike_data(actor, like_activity, activity_id),
200 {:ok, unlike_activity} <- insert(unlike_data, local),
201 {:ok, _activity} <- Repo.delete(like_activity),
202 {:ok, object} <- remove_like_from_object(like_activity, object),
203 :ok <- maybe_federate(unlike_activity) do
204 {:ok, unlike_activity, like_activity, object}
211 %User{ap_id: _} = user,
212 %Object{data: %{"id" => _}} = object,
216 with true <- is_public?(object),
217 announce_data <- make_announce_data(user, object, activity_id),
218 {:ok, activity} <- insert(announce_data, local),
219 {:ok, object} <- add_announce_to_object(activity, object),
220 :ok <- maybe_federate(activity) do
221 {:ok, activity, object}
223 error -> {:error, error}
233 with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
234 unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
235 {:ok, unannounce_activity} <- insert(unannounce_data, local),
236 :ok <- maybe_federate(unannounce_activity),
237 {:ok, _activity} <- Repo.delete(announce_activity),
238 {:ok, object} <- remove_announce_from_object(announce_activity, object) do
239 {:ok, unannounce_activity, object}
245 def follow(follower, followed, activity_id \\ nil, local \\ true) do
246 with data <- make_follow_data(follower, followed, activity_id),
247 {:ok, activity} <- insert(data, local),
248 :ok <- maybe_federate(activity) do
253 def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
254 with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
255 {:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
256 unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
257 {:ok, activity} <- insert(unfollow_data, local),
258 :ok <- maybe_federate(activity) do
263 def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
264 user = User.get_cached_by_ap_id(actor)
270 "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
273 with Repo.delete(object),
274 Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
275 {:ok, activity} <- insert(data, local),
276 :ok <- maybe_federate(activity),
277 {:ok, _actor} <- User.decrease_note_count(user) do
282 def block(blocker, blocked, activity_id \\ nil, local \\ true) do
283 ap_config = Application.get_env(:pleroma, :activitypub)
284 unfollow_blocked = Keyword.get(ap_config, :unfollow_blocked)
285 outgoing_blocks = Keyword.get(ap_config, :outgoing_blocks)
287 with true <- unfollow_blocked do
288 follow_activity = fetch_latest_follow(blocker, blocked)
290 if follow_activity do
291 unfollow(blocker, blocked, nil, local)
295 with true <- outgoing_blocks,
296 block_data <- make_block_data(blocker, blocked, activity_id),
297 {:ok, activity} <- insert(block_data, local),
298 :ok <- maybe_federate(activity) do
305 def unblock(blocker, blocked, activity_id \\ nil, local \\ true) do
306 with %Activity{} = block_activity <- fetch_latest_block(blocker, blocked),
307 unblock_data <- make_unblock_data(blocker, blocked, block_activity, activity_id),
308 {:ok, activity} <- insert(unblock_data, local),
309 :ok <- maybe_federate(activity) do
314 def fetch_activities_for_context(context, opts \\ %{}) do
315 public = ["https://www.w3.org/ns/activitystreams#Public"]
318 if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
320 query = from(activity in Activity)
324 |> restrict_blocked(opts)
325 |> restrict_recipients(recipients, opts["user"])
332 "?->>'type' = ? and ?->>'context' = ?",
338 order_by: [desc: :id]
344 def fetch_public_activities(opts \\ %{}) do
345 q = fetch_activities_query(["https://www.w3.org/ns/activitystreams#Public"], opts)
348 |> restrict_unlisted()
353 @valid_visibilities ~w[direct unlisted public private]
355 defp restrict_visibility(query, %{visibility: "direct"}) do
356 public = "https://www.w3.org/ns/activitystreams#Public"
360 join: sender in User,
361 on: sender.ap_id == activity.actor,
362 # Are non-direct statuses with no to/cc possible?
366 [^public, sender.follower_address],
372 defp restrict_visibility(_query, %{visibility: visibility})
373 when visibility not in @valid_visibilities do
374 Logger.error("Could not restrict visibility to #{visibility}")
377 defp restrict_visibility(query, _visibility), do: query
379 def fetch_user_activities(user, reading_user, params \\ %{}) do
382 |> Map.put("type", ["Create", "Announce"])
383 |> Map.put("actor_id", user.ap_id)
384 |> Map.put("whole_db", true)
388 ["https://www.w3.org/ns/activitystreams#Public"] ++
389 [reading_user.ap_id | reading_user.following]
391 ["https://www.w3.org/ns/activitystreams#Public"]
394 fetch_activities(recipients, params)
398 defp restrict_since(query, %{"since_id" => since_id}) do
399 from(activity in query, where: activity.id > ^since_id)
402 defp restrict_since(query, _), do: query
404 defp restrict_tag(query, %{"tag" => tag}) do
407 where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
411 defp restrict_tag(query, _), do: query
413 defp restrict_recipients(query, [], _user), do: query
415 defp restrict_recipients(query, recipients, nil) do
416 from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
419 defp restrict_recipients(query, recipients, user) do
422 where: fragment("? && ?", ^recipients, activity.recipients),
423 or_where: activity.actor == ^user.ap_id
427 defp restrict_limit(query, %{"limit" => limit}) do
428 from(activity in query, limit: ^limit)
431 defp restrict_limit(query, _), do: query
433 defp restrict_local(query, %{"local_only" => true}) do
434 from(activity in query, where: activity.local == true)
437 defp restrict_local(query, _), do: query
439 defp restrict_max(query, %{"max_id" => max_id}) do
440 from(activity in query, where: activity.id < ^max_id)
443 defp restrict_max(query, _), do: query
445 defp restrict_actor(query, %{"actor_id" => actor_id}) do
446 from(activity in query, where: activity.actor == ^actor_id)
449 defp restrict_actor(query, _), do: query
451 defp restrict_type(query, %{"type" => type}) when is_binary(type) do
452 restrict_type(query, %{"type" => [type]})
455 defp restrict_type(query, %{"type" => type}) do
456 from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
459 defp restrict_type(query, _), do: query
461 defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
464 where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
468 defp restrict_favorited_by(query, _), do: query
470 defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
473 where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[])
477 defp restrict_media(query, _), do: query
479 defp restrict_replies(query, %{"exclude_replies" => val}) when val == "true" or val == "1" do
482 where: fragment("?->'object'->>'inReplyTo' is null", activity.data)
486 defp restrict_replies(query, _), do: query
488 # Only search through last 100_000 activities by default
489 defp restrict_recent(query, %{"whole_db" => true}), do: query
491 defp restrict_recent(query, _) do
492 since = (Repo.aggregate(Activity, :max, :id) || 0) - 100_000
494 from(activity in query, where: activity.id > ^since)
497 defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
498 blocks = info["blocks"] || []
499 domain_blocks = info["domain_blocks"] || []
503 where: fragment("not (? = ANY(?))", activity.actor, ^blocks),
504 where: fragment("not (?->'to' \\?| ?)", activity.data, ^blocks),
505 where: fragment("not (split_part(?, '/', 3) = ANY(?))", activity.actor, ^domain_blocks)
509 defp restrict_blocked(query, _), do: query
511 defp restrict_unlisted(query) do
516 "not (coalesce(?->'cc', '{}'::jsonb) \\?| ?)",
518 ^["https://www.w3.org/ns/activitystreams#Public"]
523 def fetch_activities_query(recipients, opts \\ %{}) do
526 activity in Activity,
528 order_by: [fragment("? desc nulls last", activity.id)]
532 |> restrict_recipients(recipients, opts["user"])
533 |> restrict_tag(opts)
534 |> restrict_since(opts)
535 |> restrict_local(opts)
536 |> restrict_limit(opts)
537 |> restrict_max(opts)
538 |> restrict_actor(opts)
539 |> restrict_type(opts)
540 |> restrict_favorited_by(opts)
541 |> restrict_recent(opts)
542 |> restrict_blocked(opts)
543 |> restrict_media(opts)
544 |> restrict_visibility(opts)
545 |> restrict_replies(opts)
548 def fetch_activities(recipients, opts \\ %{}) do
549 fetch_activities_query(recipients, opts)
555 data = Upload.store(file, Application.get_env(:pleroma, :instance)[:dedupe_media])
556 Repo.insert(%Object{data: data})
559 def user_data_from_user_object(data) do
561 data["icon"]["url"] &&
564 "url" => [%{"href" => data["icon"]["url"]}]
568 data["image"]["url"] &&
571 "url" => [%{"href" => data["image"]["url"]}]
574 locked = data["manuallyApprovesFollowers"] || false
575 data = Transmogrifier.maybe_fix_user_object(data)
580 "ap_enabled" => true,
581 "source_data" => data,
587 follower_address: data["followers"],
591 # nickname can be nil because of virtual actors
593 if data["preferredUsername"] do
597 "#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}"
600 Map.put(user_data, :nickname, nil)
606 def fetch_and_prepare_user_from_ap_id(ap_id) do
607 with {:ok, %{status_code: 200, body: body}} <-
608 @httpoison.get(ap_id, [Accept: "application/activity+json"], follow_redirect: true),
609 {:ok, data} <- Jason.decode(body) do
610 user_data_from_user_object(data)
612 e -> Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
616 def make_user_from_ap_id(ap_id) do
617 if _user = User.get_by_ap_id(ap_id) do
618 Transmogrifier.upgrade_user_from_ap_id(ap_id)
620 with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
621 User.insert_or_update_user(data)
628 def make_user_from_nickname(nickname) do
629 with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
630 make_user_from_ap_id(ap_id)
632 _e -> {:error, "No AP id in WebFinger"}
636 @quarantined_instances Keyword.get(@instance, :quarantined_instances, [])
638 def should_federate?(inbox, public) do
642 inbox_info = URI.parse(inbox)
643 inbox_info.host not in @quarantined_instances
647 def publish(actor, activity) do
649 if actor.follower_address in activity.recipients do
650 {:ok, followers} = User.get_followers(actor)
651 followers |> Enum.filter(&(!&1.local))
656 public = is_public?(activity)
659 (Pleroma.Web.Salmon.remote_users(activity) ++ followers)
660 |> Enum.filter(fn user -> User.ap_enabled?(user) end)
661 |> Enum.map(fn %{info: %{"source_data" => data}} ->
662 (data["endpoints"] && data["endpoints"]["sharedInbox"]) || data["inbox"]
665 |> Enum.filter(fn inbox -> should_federate?(inbox, public) end)
667 {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
668 json = Jason.encode!(data)
670 Enum.each(remote_inboxes, fn inbox ->
671 Federator.enqueue(:publish_single_ap, %{
675 id: activity.data["id"]
680 def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
681 Logger.info("Federating #{id} to #{inbox}")
682 host = URI.parse(inbox).host
684 digest = "SHA-256=" <> (:crypto.hash(:sha256, json) |> Base.encode64())
687 Pleroma.Web.HTTPSignatures.sign(actor, %{
689 "content-length": byte_size(json),
697 {"Content-Type", "application/activity+json"},
698 {"signature", signature},
701 hackney: [pool: :default]
706 # This will create a Create activity, which we need internally at the moment.
707 def fetch_object_from_id(id) do
708 if object = Object.get_cached_by_ap_id(id) do
711 Logger.info("Fetching #{id} via AP")
713 with true <- String.starts_with?(id, "http"),
714 {:ok, %{body: body, status_code: code}} when code in 200..299 <-
717 [Accept: "application/activity+json"],
718 follow_redirect: true,
722 {:ok, data} <- Jason.decode(body),
723 nil <- Object.normalize(data),
728 "actor" => data["attributedTo"],
731 {:ok, activity} <- Transmogrifier.handle_incoming(params) do
732 {:ok, Object.normalize(activity.data["object"])}
734 object = %Object{} ->
738 Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
740 case OStatus.fetch_activity_from_url(id) do
741 {:ok, [activity | _]} -> {:ok, Object.normalize(activity.data["object"])}
748 def is_public?(activity) do
749 "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++
750 (activity.data["cc"] || []))
753 def visible_for_user?(activity, nil) do
757 def visible_for_user?(activity, user) do
758 x = [user.ap_id | user.following]
759 y = activity.data["to"] ++ (activity.data["cc"] || [])
760 visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))