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 def get_recipients(data) do
16 (data["to"] || []) ++ (data["cc"] || [])
19 defp check_actor_is_active(actor) do
20 if not is_nil(actor) do
21 with user <- User.get_cached_by_ap_id(actor),
22 nil <- user.info["deactivated"] do
32 def insert(map, local \\ true) when is_map(map) do
33 with nil <- Activity.normalize(map),
34 map <- lazy_put_activity_defaults(map),
35 :ok <- check_actor_is_active(map["actor"]),
36 {:ok, map} <- MRF.filter(map),
37 :ok <- insert_full_object(map) do
39 Repo.insert(%Activity{
43 recipients: get_recipients(map)
46 Notification.create_notifications(activity)
50 %Activity{} = activity -> {:ok, activity}
51 error -> {:error, error}
55 def stream_out(activity) do
56 public = "https://www.w3.org/ns/activitystreams#Public"
58 if activity.data["type"] in ["Create", "Announce"] do
59 Pleroma.Web.Streamer.stream("user", activity)
60 Pleroma.Web.Streamer.stream("list", activity)
62 if Enum.member?(activity.data["to"], public) do
63 Pleroma.Web.Streamer.stream("public", activity)
66 Pleroma.Web.Streamer.stream("public:local", activity)
69 if activity.data["object"]["attachment"] != [] do
70 Pleroma.Web.Streamer.stream("public:media", activity)
73 Pleroma.Web.Streamer.stream("public:local:media", activity)
77 if !Enum.member?(activity.data["cc"] || [], public) &&
80 User.get_by_ap_id(activity.data["actor"]).follower_address
82 do: Pleroma.Web.Streamer.stream("direct", activity)
87 def create(%{to: to, actor: actor, context: context, object: object} = params) do
88 additional = params[:additional] || %{}
89 # only accept false as false value
90 local = !(params[:local] == false)
91 published = params[:published]
95 %{to: to, actor: actor, published: published, context: context, object: object},
98 {:ok, activity} <- insert(create_data, local),
99 :ok <- maybe_federate(activity),
100 {:ok, _actor} <- User.increase_note_count(actor) do
105 def accept(%{to: to, actor: actor, object: object} = params) do
106 # only accept false as false value
107 local = !(params[:local] == false)
109 with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
110 {:ok, activity} <- insert(data, local),
111 :ok <- maybe_federate(activity) do
116 def reject(%{to: to, actor: actor, object: object} = params) do
117 # only accept false as false value
118 local = !(params[:local] == false)
120 with data <- %{"to" => to, "type" => "Reject", "actor" => actor, "object" => object},
121 {:ok, activity} <- insert(data, local),
122 :ok <- maybe_federate(activity) do
127 def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
128 # only accept false as false value
129 local = !(params[:local] == false)
138 {:ok, activity} <- insert(data, local),
139 :ok <- maybe_federate(activity) do
144 # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
146 %User{ap_id: ap_id} = user,
147 %Object{data: %{"id" => _}} = object,
151 with nil <- get_existing_like(ap_id, object),
152 like_data <- make_like_data(user, object, activity_id),
153 {:ok, activity} <- insert(like_data, local),
154 {:ok, object} <- add_like_to_object(activity, object),
155 :ok <- maybe_federate(activity) do
156 {:ok, activity, object}
158 %Activity{} = activity -> {:ok, activity, object}
159 error -> {:error, error}
169 with %Activity{} = like_activity <- get_existing_like(actor.ap_id, object),
170 unlike_data <- make_unlike_data(actor, like_activity, activity_id),
171 {:ok, unlike_activity} <- insert(unlike_data, local),
172 {:ok, _activity} <- Repo.delete(like_activity),
173 {:ok, object} <- remove_like_from_object(like_activity, object),
174 :ok <- maybe_federate(unlike_activity) do
175 {:ok, unlike_activity, like_activity, object}
182 %User{ap_id: _} = user,
183 %Object{data: %{"id" => _}} = object,
187 with true <- is_public?(object),
188 announce_data <- make_announce_data(user, object, activity_id),
189 {:ok, activity} <- insert(announce_data, local),
190 {:ok, object} <- add_announce_to_object(activity, object),
191 :ok <- maybe_federate(activity) do
192 {:ok, activity, object}
194 error -> {:error, error}
204 with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
205 unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
206 {:ok, unannounce_activity} <- insert(unannounce_data, local),
207 :ok <- maybe_federate(unannounce_activity),
208 {:ok, _activity} <- Repo.delete(announce_activity),
209 {:ok, object} <- remove_announce_from_object(announce_activity, object) do
210 {:ok, unannounce_activity, object}
216 def follow(follower, followed, activity_id \\ nil, local \\ true) do
217 with data <- make_follow_data(follower, followed, activity_id),
218 {:ok, activity} <- insert(data, local),
219 :ok <- maybe_federate(activity) do
224 def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
225 with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
226 {:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
227 unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
228 {:ok, activity} <- insert(unfollow_data, local),
229 :ok <- maybe_federate(activity) do
234 def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
235 user = User.get_cached_by_ap_id(actor)
241 "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
244 with Repo.delete(object),
245 Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
246 {:ok, activity} <- insert(data, local),
247 :ok <- maybe_federate(activity),
248 {:ok, _actor} <- User.decrease_note_count(user) do
253 def block(blocker, blocked, activity_id \\ nil, local \\ true) do
254 ap_config = Application.get_env(:pleroma, :activitypub)
255 unfollow_blocked = Keyword.get(ap_config, :unfollow_blocked)
256 outgoing_blocks = Keyword.get(ap_config, :outgoing_blocks)
258 with true <- unfollow_blocked do
259 follow_activity = fetch_latest_follow(blocker, blocked)
261 if follow_activity do
262 unfollow(blocker, blocked, nil, local)
266 with true <- outgoing_blocks,
267 block_data <- make_block_data(blocker, blocked, activity_id),
268 {:ok, activity} <- insert(block_data, local),
269 :ok <- maybe_federate(activity) do
276 def unblock(blocker, blocked, activity_id \\ nil, local \\ true) do
277 with %Activity{} = block_activity <- fetch_latest_block(blocker, blocked),
278 unblock_data <- make_unblock_data(blocker, blocked, block_activity, activity_id),
279 {:ok, activity} <- insert(unblock_data, local),
280 :ok <- maybe_federate(activity) do
285 def fetch_activities_for_context(context, opts \\ %{}) do
286 public = ["https://www.w3.org/ns/activitystreams#Public"]
289 if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
291 query = from(activity in Activity)
295 |> restrict_blocked(opts)
296 |> restrict_recipients(recipients, opts["user"])
303 "?->>'type' = ? and ?->>'context' = ?",
309 order_by: [desc: :id]
315 def fetch_public_activities(opts \\ %{}) do
316 q = fetch_activities_query(["https://www.w3.org/ns/activitystreams#Public"], opts)
319 |> restrict_unlisted()
324 @valid_visibilities ~w[direct unlisted public private]
326 defp restrict_visibility(query, %{visibility: "direct"}) do
327 public = "https://www.w3.org/ns/activitystreams#Public"
331 join: sender in User,
332 on: sender.ap_id == activity.actor,
333 # Are non-direct statuses with no to/cc possible?
337 [^public, sender.follower_address],
343 defp restrict_visibility(_query, %{visibility: visibility})
344 when visibility not in @valid_visibilities do
345 Logger.error("Could not restrict visibility to #{visibility}")
348 defp restrict_visibility(query, _visibility), do: query
350 def fetch_user_activities(user, reading_user, params \\ %{}) do
353 |> Map.put("type", ["Create", "Announce"])
354 |> Map.put("actor_id", user.ap_id)
355 |> Map.put("whole_db", true)
359 ["https://www.w3.org/ns/activitystreams#Public"] ++
360 [reading_user.ap_id | reading_user.following]
362 ["https://www.w3.org/ns/activitystreams#Public"]
365 fetch_activities(recipients, params)
369 defp restrict_since(query, %{"since_id" => since_id}) do
370 from(activity in query, where: activity.id > ^since_id)
373 defp restrict_since(query, _), do: query
375 defp restrict_tag(query, %{"tag" => tag}) do
378 where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
382 defp restrict_tag(query, _), do: query
384 defp restrict_recipients(query, [], _user), do: query
386 defp restrict_recipients(query, recipients, nil) do
387 from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
390 defp restrict_recipients(query, recipients, user) do
393 where: fragment("? && ?", ^recipients, activity.recipients),
394 or_where: activity.actor == ^user.ap_id
398 defp restrict_limit(query, %{"limit" => limit}) do
399 from(activity in query, limit: ^limit)
402 defp restrict_limit(query, _), do: query
404 defp restrict_local(query, %{"local_only" => true}) do
405 from(activity in query, where: activity.local == true)
408 defp restrict_local(query, _), do: query
410 defp restrict_max(query, %{"max_id" => max_id}) do
411 from(activity in query, where: activity.id < ^max_id)
414 defp restrict_max(query, _), do: query
416 defp restrict_actor(query, %{"actor_id" => actor_id}) do
417 from(activity in query, where: activity.actor == ^actor_id)
420 defp restrict_actor(query, _), do: query
422 defp restrict_type(query, %{"type" => type}) when is_binary(type) do
423 restrict_type(query, %{"type" => [type]})
426 defp restrict_type(query, %{"type" => type}) do
427 from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
430 defp restrict_type(query, _), do: query
432 defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
435 where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
439 defp restrict_favorited_by(query, _), do: query
441 defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
444 where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[])
448 defp restrict_media(query, _), do: query
450 defp restrict_replies(query, %{"exclude_replies" => val}) when val == "true" or val == "1" do
453 where: fragment("?->'object'->>'inReplyTo' is null", activity.data)
457 defp restrict_replies(query, _), do: query
459 # Only search through last 100_000 activities by default
460 defp restrict_recent(query, %{"whole_db" => true}), do: query
462 defp restrict_recent(query, _) do
463 since = (Repo.aggregate(Activity, :max, :id) || 0) - 100_000
465 from(activity in query, where: activity.id > ^since)
468 defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
469 blocks = info["blocks"] || []
470 domain_blocks = info["domain_blocks"] || []
474 where: fragment("not (? = ANY(?))", activity.actor, ^blocks),
475 where: fragment("not (?->'to' \\?| ?)", activity.data, ^blocks),
476 where: fragment("not (split_part(?, '/', 3) = ANY(?))", activity.actor, ^domain_blocks)
480 defp restrict_blocked(query, _), do: query
482 defp restrict_unlisted(query) do
487 "not (coalesce(?->'cc', '{}'::jsonb) \\?| ?)",
489 ^["https://www.w3.org/ns/activitystreams#Public"]
494 def fetch_activities_query(recipients, opts \\ %{}) do
497 activity in Activity,
499 order_by: [fragment("? desc nulls last", activity.id)]
503 |> restrict_recipients(recipients, opts["user"])
504 |> restrict_tag(opts)
505 |> restrict_since(opts)
506 |> restrict_local(opts)
507 |> restrict_limit(opts)
508 |> restrict_max(opts)
509 |> restrict_actor(opts)
510 |> restrict_type(opts)
511 |> restrict_favorited_by(opts)
512 |> restrict_recent(opts)
513 |> restrict_blocked(opts)
514 |> restrict_media(opts)
515 |> restrict_visibility(opts)
516 |> restrict_replies(opts)
519 def fetch_activities(recipients, opts \\ %{}) do
520 fetch_activities_query(recipients, opts)
526 data = Upload.store(file, Application.get_env(:pleroma, :instance)[:dedupe_media])
527 Repo.insert(%Object{data: data})
530 def user_data_from_user_object(data) do
532 data["icon"]["url"] &&
535 "url" => [%{"href" => data["icon"]["url"]}]
539 data["image"]["url"] &&
542 "url" => [%{"href" => data["image"]["url"]}]
545 locked = data["manuallyApprovesFollowers"] || false
546 data = Transmogrifier.maybe_fix_user_object(data)
551 "ap_enabled" => true,
552 "source_data" => data,
557 nickname: "#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}",
559 follower_address: data["followers"],
566 def fetch_and_prepare_user_from_ap_id(ap_id) do
567 with {:ok, %{status_code: 200, body: body}} <-
568 @httpoison.get(ap_id, Accept: "application/activity+json"),
569 {:ok, data} <- Jason.decode(body) do
570 user_data_from_user_object(data)
572 e -> Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
576 def make_user_from_ap_id(ap_id) do
577 if _user = User.get_by_ap_id(ap_id) do
578 Transmogrifier.upgrade_user_from_ap_id(ap_id)
580 with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
581 User.insert_or_update_user(data)
588 def make_user_from_nickname(nickname) do
589 with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
590 make_user_from_ap_id(ap_id)
592 _e -> {:error, "No AP id in WebFinger"}
596 @quarantined_instances Keyword.get(@instance, :quarantined_instances, [])
598 def should_federate?(inbox, public) do
602 inbox_info = URI.parse(inbox)
603 inbox_info.host not in @quarantined_instances
607 def publish(actor, activity) do
609 if actor.follower_address in activity.recipients do
610 {:ok, followers} = User.get_followers(actor)
611 followers |> Enum.filter(&(!&1.local))
616 public = is_public?(activity)
619 (Pleroma.Web.Salmon.remote_users(activity) ++ followers)
620 |> Enum.filter(fn user -> User.ap_enabled?(user) end)
621 |> Enum.map(fn %{info: %{"source_data" => data}} ->
622 (data["endpoints"] && data["endpoints"]["sharedInbox"]) || data["inbox"]
625 |> Enum.filter(fn inbox -> should_federate?(inbox, public) end)
627 {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
628 json = Jason.encode!(data)
630 Enum.each(remote_inboxes, fn inbox ->
631 Federator.enqueue(:publish_single_ap, %{
635 id: activity.data["id"]
640 def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
641 Logger.info("Federating #{id} to #{inbox}")
642 host = URI.parse(inbox).host
645 Pleroma.Web.HTTPSignatures.sign(actor, %{host: host, "content-length": byte_size(json)})
650 [{"Content-Type", "application/activity+json"}, {"signature", signature}],
651 hackney: [pool: :default]
656 # This will create a Create activity, which we need internally at the moment.
657 def fetch_object_from_id(id) do
658 if object = Object.get_cached_by_ap_id(id) do
661 Logger.info("Fetching #{id} via AP")
663 with true <- String.starts_with?(id, "http"),
664 {:ok, %{body: body, status_code: code}} when code in 200..299 <-
667 [Accept: "application/activity+json"],
668 follow_redirect: true,
672 {:ok, data} <- Jason.decode(body),
673 nil <- Object.normalize(data),
678 "actor" => data["attributedTo"],
681 {:ok, activity} <- Transmogrifier.handle_incoming(params) do
682 {:ok, Object.normalize(activity.data["object"])}
684 object = %Object{} ->
688 Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
690 case OStatus.fetch_activity_from_url(id) do
691 {:ok, [activity | _]} -> {:ok, Object.normalize(activity.data["object"])}
698 def is_public?(activity) do
699 "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++
700 (activity.data["cc"] || []))
703 def visible_for_user?(activity, nil) do
707 def visible_for_user?(activity, user) do
708 x = [user.ap_id | user.following]
709 y = activity.data["to"] ++ (activity.data["cc"] || [])
710 visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))