1 defmodule Pleroma.Web.ActivityPub.ActivityPub do
2 alias Pleroma.{Activity, Repo, Object, Upload, User, Notification}
3 alias Pleroma.Web.ActivityPub.Transmogrifier
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)
14 @rewrite_policy Keyword.get(@instance, :rewrite_policy)
16 def get_recipients(data) do
17 (data["to"] || []) ++ (data["cc"] || [])
20 def insert(map, local \\ true) when is_map(map) do
21 with nil <- Activity.get_by_ap_id(map["id"]),
22 map <- lazy_put_activity_defaults(map),
23 {:ok, map} <- @rewrite_policy.filter(map),
24 :ok <- insert_full_object(map) do
26 Repo.insert(%Activity{
30 recipients: get_recipients(map)
33 Notification.create_notifications(activity)
37 %Activity{} = activity -> {:ok, activity}
38 error -> {:error, error}
42 def stream_out(activity) do
43 public = "https://www.w3.org/ns/activitystreams#Public"
45 if activity.data["type"] in ["Create", "Announce"] do
46 Pleroma.Web.Streamer.stream("user", activity)
48 if Enum.member?(activity.data["to"], public) do
49 Pleroma.Web.Streamer.stream("public", activity)
52 Pleroma.Web.Streamer.stream("public:local", activity)
55 if !Enum.member?(activity.data["cc"] || [], public) &&
58 User.get_by_ap_id(activity.data["actor"]).follower_address
60 do: Pleroma.Web.Streamer.stream("direct", activity)
65 def create(%{to: to, actor: actor, context: context, object: object} = params) do
66 additional = params[:additional] || %{}
67 # only accept false as false value
68 local = !(params[:local] == false)
69 published = params[:published]
73 %{to: to, actor: actor, published: published, context: context, object: object},
76 {:ok, activity} <- insert(create_data, local),
77 :ok <- maybe_federate(activity),
78 {:ok, _actor} <- User.increase_note_count(actor) do
83 def accept(%{to: to, actor: actor, object: object} = params) do
84 # only accept false as false value
85 local = !(params[:local] == false)
87 with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
88 {:ok, activity} <- insert(data, local),
89 :ok <- maybe_federate(activity) do
94 def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
95 # only accept false as false value
96 local = !(params[:local] == false)
105 {:ok, activity} <- insert(data, local),
106 :ok <- maybe_federate(activity) do
111 # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
113 %User{ap_id: ap_id} = user,
114 %Object{data: %{"id" => _}} = object,
118 with nil <- get_existing_like(ap_id, object),
119 like_data <- make_like_data(user, object, activity_id),
120 {:ok, activity} <- insert(like_data, local),
121 {:ok, object} <- add_like_to_object(activity, object),
122 :ok <- maybe_federate(activity) do
123 {:ok, activity, object}
125 %Activity{} = activity -> {:ok, activity, object}
126 error -> {:error, error}
130 def unlike(%User{} = actor, %Object{} = object) do
131 with %Activity{} = activity <- get_existing_like(actor.ap_id, object),
132 {:ok, _activity} <- Repo.delete(activity),
133 {:ok, object} <- remove_like_from_object(activity, object) do
141 %User{ap_id: _} = user,
142 %Object{data: %{"id" => _}} = object,
146 with true <- is_public?(object),
147 announce_data <- make_announce_data(user, object, activity_id),
148 {:ok, activity} <- insert(announce_data, local),
149 {:ok, object} <- add_announce_to_object(activity, object),
150 :ok <- maybe_federate(activity) do
151 {:ok, activity, object}
153 error -> {:error, error}
157 def follow(follower, followed, activity_id \\ nil, local \\ true) do
158 with data <- make_follow_data(follower, followed, activity_id),
159 {:ok, activity} <- insert(data, local),
160 :ok <- maybe_federate(activity) do
165 def unfollow(follower, followed, local \\ true) do
166 with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
167 unfollow_data <- make_unfollow_data(follower, followed, follow_activity),
168 {:ok, activity} <- insert(unfollow_data, local),
170 maybe_federate(activity) do
175 def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
176 user = User.get_cached_by_ap_id(actor)
182 "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
185 with Repo.delete(object),
186 Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
187 {:ok, activity} <- insert(data, local),
188 :ok <- maybe_federate(activity),
189 {:ok, _actor} <- User.decrease_note_count(user) do
194 def fetch_activities_for_context(context, opts \\ %{}) do
195 public = ["https://www.w3.org/ns/activitystreams#Public"]
198 if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
200 query = from(activity in Activity)
204 |> restrict_blocked(opts)
205 |> restrict_recipients(recipients, opts["user"])
212 "?->>'type' = ? and ?->>'context' = ?",
218 order_by: [desc: :id]
224 # TODO: Make this work properly with unlisted.
225 def fetch_public_activities(opts \\ %{}) do
226 q = fetch_activities_query(["https://www.w3.org/ns/activitystreams#Public"], opts)
233 @valid_visibilities ~w[direct unlisted public private]
235 defp restrict_visibility(query, %{visibility: "direct"}) do
236 public = "https://www.w3.org/ns/activitystreams#Public"
240 join: sender in User,
241 on: sender.ap_id == activity.actor,
243 fragment("not data->'to' \\? ?", ^public) and fragment("not data->'cc' \\? ?", ^public) and
244 fragment("not data->'to' \\? ?", sender.follower_address)
248 defp restrict_visibility(_query, %{visibility: visibility})
249 when visibility not in @valid_visibilities do
250 Logger.error("Could not restrict visibility to #{visibility}")
253 defp restrict_visibility(query, _visibility), do: query
255 defp restrict_since(query, %{"since_id" => since_id}) do
256 from(activity in query, where: activity.id > ^since_id)
259 defp restrict_since(query, _), do: query
261 defp restrict_tag(query, %{"tag" => tag}) do
264 where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
268 defp restrict_tag(query, _), do: query
270 defp restrict_recipients(query, [], _user), do: query
272 defp restrict_recipients(query, recipients, nil) do
273 from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
276 defp restrict_recipients(query, recipients, user) do
279 where: fragment("? && ?", ^recipients, activity.recipients),
280 or_where: activity.actor == ^user.ap_id
284 defp restrict_limit(query, %{"limit" => limit}) do
285 from(activity in query, limit: ^limit)
288 defp restrict_limit(query, _), do: query
290 defp restrict_local(query, %{"local_only" => true}) do
291 from(activity in query, where: activity.local == true)
294 defp restrict_local(query, _), do: query
296 defp restrict_max(query, %{"max_id" => max_id}) do
297 from(activity in query, where: activity.id < ^max_id)
300 defp restrict_max(query, _), do: query
302 defp restrict_actor(query, %{"actor_id" => actor_id}) do
303 from(activity in query, where: activity.actor == ^actor_id)
306 defp restrict_actor(query, _), do: query
308 defp restrict_type(query, %{"type" => type}) when is_binary(type) do
309 restrict_type(query, %{"type" => [type]})
312 defp restrict_type(query, %{"type" => type}) do
313 from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
316 defp restrict_type(query, _), do: query
318 defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
321 where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
325 defp restrict_favorited_by(query, _), do: query
327 defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
330 where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[])
334 defp restrict_media(query, _), do: query
336 # Only search through last 100_000 activities by default
337 defp restrict_recent(query, %{"whole_db" => true}), do: query
339 defp restrict_recent(query, _) do
340 since = (Repo.aggregate(Activity, :max, :id) || 0) - 100_000
342 from(activity in query, where: activity.id > ^since)
345 defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
346 blocks = info["blocks"] || []
350 where: fragment("not (? = ANY(?))", activity.actor, ^blocks),
351 where: fragment("not (?->'to' \\?| ?)", activity.data, ^blocks)
355 defp restrict_blocked(query, _), do: query
357 def fetch_activities_query(recipients, opts \\ %{}) do
360 activity in Activity,
362 order_by: [fragment("? desc nulls last", activity.id)]
366 |> restrict_recipients(recipients, opts["user"])
367 |> restrict_tag(opts)
368 |> restrict_since(opts)
369 |> restrict_local(opts)
370 |> restrict_limit(opts)
371 |> restrict_max(opts)
372 |> restrict_actor(opts)
373 |> restrict_type(opts)
374 |> restrict_favorited_by(opts)
375 |> restrict_recent(opts)
376 |> restrict_blocked(opts)
377 |> restrict_media(opts)
378 |> restrict_visibility(opts)
381 def fetch_activities(recipients, opts \\ %{}) do
382 fetch_activities_query(recipients, opts)
388 data = Upload.store(file)
389 Repo.insert(%Object{data: data})
392 def user_data_from_user_object(data) do
394 data["icon"]["url"] &&
397 "url" => [%{"href" => data["icon"]["url"]}]
401 data["image"]["url"] &&
404 "url" => [%{"href" => data["image"]["url"]}]
410 "ap_enabled" => true,
411 "source_data" => data,
415 nickname: "#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}",
417 follower_address: data["followers"],
424 def fetch_and_prepare_user_from_ap_id(ap_id) do
425 with {:ok, %{status_code: 200, body: body}} <-
426 @httpoison.get(ap_id, Accept: "application/activity+json"),
427 {:ok, data} <- Jason.decode(body) do
428 user_data_from_user_object(data)
430 e -> Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
434 def make_user_from_ap_id(ap_id) do
435 if _user = User.get_by_ap_id(ap_id) do
436 Transmogrifier.upgrade_user_from_ap_id(ap_id)
438 with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
439 User.insert_or_update_user(data)
446 def make_user_from_nickname(nickname) do
447 with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
448 make_user_from_ap_id(ap_id)
450 _e -> {:error, "No AP id in WebFinger"}
454 def publish(actor, activity) do
456 if actor.follower_address in activity.recipients do
457 {:ok, followers} = User.get_followers(actor)
458 followers |> Enum.filter(&(!&1.local))
464 (Pleroma.Web.Salmon.remote_users(activity) ++ followers)
465 |> Enum.filter(fn user -> User.ap_enabled?(user) end)
466 |> Enum.map(fn %{info: %{"source_data" => data}} ->
467 (data["endpoints"] && data["endpoints"]["sharedInbox"]) || data["inbox"]
471 {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
472 json = Jason.encode!(data)
474 Enum.each(remote_inboxes, fn inbox ->
475 Federator.enqueue(:publish_single_ap, %{
479 id: activity.data["id"]
484 def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
485 Logger.info("Federating #{id} to #{inbox}")
486 host = URI.parse(inbox).host
489 Pleroma.Web.HTTPSignatures.sign(actor, %{host: host, "content-length": byte_size(json)})
494 [{"Content-Type", "application/activity+json"}, {"signature", signature}],
495 hackney: [pool: :default]
500 # This will create a Create activity, which we need internally at the moment.
501 def fetch_object_from_id(id) do
502 if object = Object.get_cached_by_ap_id(id) do
505 Logger.info("Fetching #{id} via AP")
507 with true <- String.starts_with?(id, "http"),
508 {:ok, %{body: body, status_code: code}} when code in 200..299 <-
511 [Accept: "application/activity+json"],
512 follow_redirect: true,
516 {:ok, data} <- Jason.decode(body),
517 nil <- Object.get_by_ap_id(data["id"]),
522 "actor" => data["attributedTo"],
525 {:ok, activity} <- Transmogrifier.handle_incoming(params) do
526 {:ok, Object.get_by_ap_id(activity.data["object"]["id"])}
528 object = %Object{} ->
532 Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
534 case OStatus.fetch_activity_from_url(id) do
535 {:ok, [activity | _]} -> {:ok, Object.get_by_ap_id(activity.data["object"]["id"])}
542 def is_public?(activity) do
543 "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++
544 (activity.data["cc"] || []))
547 def visible_for_user?(activity, nil) do
551 def visible_for_user?(activity, user) do
552 x = [user.ap_id | user.following]
553 y = activity.data["to"] ++ (activity.data["cc"] || [])
554 visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))