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 user = User.get_cached_by_ap_id(actor)
22 if user.info["deactivated"] == true do
29 def insert(map, local \\ true) when is_map(map) do
30 with nil <- Activity.get_by_ap_id(map["id"]),
31 map <- lazy_put_activity_defaults(map),
32 :ok <- check_actor_is_active(map["actor"]),
33 {:ok, map} <- MRF.filter(map),
34 :ok <- insert_full_object(map) do
36 Repo.insert(%Activity{
40 recipients: get_recipients(map)
43 Notification.create_notifications(activity)
47 %Activity{} = activity -> {:ok, activity}
48 error -> {:error, error}
52 def stream_out(activity) do
53 if activity.data["type"] in ["Create", "Announce"] do
54 Pleroma.Web.Streamer.stream("user", activity)
56 if Enum.member?(activity.data["to"], "https://www.w3.org/ns/activitystreams#Public") do
57 Pleroma.Web.Streamer.stream("public", activity)
60 Pleroma.Web.Streamer.stream("public:local", activity)
66 def create(%{to: to, actor: actor, context: context, object: object} = params) do
67 additional = params[:additional] || %{}
68 # only accept false as false value
69 local = !(params[:local] == false)
70 published = params[:published]
74 %{to: to, actor: actor, published: published, context: context, object: object},
77 {:ok, activity} <- insert(create_data, local),
78 :ok <- maybe_federate(activity),
79 {:ok, _actor} <- User.increase_note_count(actor) do
84 def accept(%{to: to, actor: actor, object: object} = params) do
85 # only accept false as false value
86 local = !(params[:local] == false)
88 with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
89 {:ok, activity} <- insert(data, local),
90 :ok <- maybe_federate(activity) do
95 def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
96 # only accept false as false value
97 local = !(params[:local] == false)
106 {:ok, activity} <- insert(data, local),
107 :ok <- maybe_federate(activity) do
112 # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
114 %User{ap_id: ap_id} = user,
115 %Object{data: %{"id" => _}} = object,
119 with nil <- get_existing_like(ap_id, object),
120 like_data <- make_like_data(user, object, activity_id),
121 {:ok, activity} <- insert(like_data, local),
122 {:ok, object} <- add_like_to_object(activity, object),
123 :ok <- maybe_federate(activity) do
124 {:ok, activity, object}
126 %Activity{} = activity -> {:ok, activity, object}
127 error -> {:error, error}
131 def unlike(%User{} = actor, %Object{} = object) do
132 with %Activity{} = activity <- get_existing_like(actor.ap_id, object),
133 {:ok, _activity} <- Repo.delete(activity),
134 {:ok, object} <- remove_like_from_object(activity, object) do
142 %User{ap_id: _} = user,
143 %Object{data: %{"id" => _}} = object,
147 with true <- is_public?(object),
148 announce_data <- make_announce_data(user, object, activity_id),
149 {:ok, activity} <- insert(announce_data, local),
150 {:ok, object} <- add_announce_to_object(activity, object),
151 :ok <- maybe_federate(activity) do
152 {:ok, activity, object}
154 error -> {:error, error}
164 with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
165 unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
166 {:ok, unannounce_activity} <- insert(unannounce_data, local),
167 :ok <- maybe_federate(unannounce_activity),
168 {:ok, _activity} <- Repo.delete(announce_activity),
169 {:ok, object} <- remove_announce_from_object(announce_activity, object) do
170 {:ok, unannounce_activity, announce_activity, object}
176 def follow(follower, followed, activity_id \\ nil, local \\ true) do
177 with data <- make_follow_data(follower, followed, activity_id),
178 {:ok, activity} <- insert(data, local),
179 :ok <- maybe_federate(activity) do
184 def unfollow(follower, followed, local \\ true) do
185 with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
186 unfollow_data <- make_unfollow_data(follower, followed, follow_activity),
187 {:ok, activity} <- insert(unfollow_data, local),
189 maybe_federate(activity) do
194 def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
195 user = User.get_cached_by_ap_id(actor)
201 "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
204 with Repo.delete(object),
205 Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
206 {:ok, activity} <- insert(data, local),
207 :ok <- maybe_federate(activity),
208 {:ok, _actor} <- User.decrease_note_count(user) do
213 def fetch_activities_for_context(context, opts \\ %{}) do
214 public = ["https://www.w3.org/ns/activitystreams#Public"]
217 if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
219 query = from(activity in Activity)
223 |> restrict_blocked(opts)
224 |> restrict_recipients(recipients, opts["user"])
231 "?->>'type' = ? and ?->>'context' = ?",
237 order_by: [desc: :id]
243 def fetch_public_activities(opts \\ %{}) do
244 q = fetch_activities_query(["https://www.w3.org/ns/activitystreams#Public"], opts)
247 |> restrict_unlisted()
252 defp restrict_since(query, %{"since_id" => since_id}) do
253 from(activity in query, where: activity.id > ^since_id)
256 defp restrict_since(query, _), do: query
258 defp restrict_tag(query, %{"tag" => tag}) do
261 where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
265 defp restrict_tag(query, _), do: query
267 defp restrict_recipients(query, [], _user), do: query
269 defp restrict_recipients(query, recipients, nil) do
270 from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
273 defp restrict_recipients(query, recipients, user) do
276 where: fragment("? && ?", ^recipients, activity.recipients),
277 or_where: activity.actor == ^user.ap_id
281 defp restrict_limit(query, %{"limit" => limit}) do
282 from(activity in query, limit: ^limit)
285 defp restrict_limit(query, _), do: query
287 defp restrict_local(query, %{"local_only" => true}) do
288 from(activity in query, where: activity.local == true)
291 defp restrict_local(query, _), do: query
293 defp restrict_max(query, %{"max_id" => max_id}) do
294 from(activity in query, where: activity.id < ^max_id)
297 defp restrict_max(query, _), do: query
299 defp restrict_actor(query, %{"actor_id" => actor_id}) do
300 from(activity in query, where: activity.actor == ^actor_id)
303 defp restrict_actor(query, _), do: query
305 defp restrict_type(query, %{"type" => type}) when is_binary(type) do
306 restrict_type(query, %{"type" => [type]})
309 defp restrict_type(query, %{"type" => type}) do
310 from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
313 defp restrict_type(query, _), do: query
315 defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
318 where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
322 defp restrict_favorited_by(query, _), do: query
324 defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
327 where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[])
331 defp restrict_media(query, _), do: query
333 # Only search through last 100_000 activities by default
334 defp restrict_recent(query, %{"whole_db" => true}), do: query
336 defp restrict_recent(query, _) do
337 since = (Repo.aggregate(Activity, :max, :id) || 0) - 100_000
339 from(activity in query, where: activity.id > ^since)
342 defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
343 blocks = info["blocks"] || []
347 where: fragment("not (? = ANY(?))", activity.actor, ^blocks),
348 where: fragment("not (?->'to' \\?| ?)", activity.data, ^blocks)
352 defp restrict_blocked(query, _), do: query
354 defp restrict_unlisted(query) do
359 "not (coalesce(?->'cc', '{}'::jsonb) \\?| ?)",
361 ^["https://www.w3.org/ns/activitystreams#Public"]
366 def fetch_activities_query(recipients, opts \\ %{}) do
369 activity in Activity,
371 order_by: [fragment("? desc nulls last", activity.id)]
375 |> restrict_recipients(recipients, opts["user"])
376 |> restrict_tag(opts)
377 |> restrict_since(opts)
378 |> restrict_local(opts)
379 |> restrict_limit(opts)
380 |> restrict_max(opts)
381 |> restrict_actor(opts)
382 |> restrict_type(opts)
383 |> restrict_favorited_by(opts)
384 |> restrict_recent(opts)
385 |> restrict_blocked(opts)
386 |> restrict_media(opts)
389 def fetch_activities(recipients, opts \\ %{}) do
390 fetch_activities_query(recipients, opts)
396 data = Upload.store(file)
397 Repo.insert(%Object{data: data})
400 def user_data_from_user_object(data) do
402 data["icon"]["url"] &&
405 "url" => [%{"href" => data["icon"]["url"]}]
409 data["image"]["url"] &&
412 "url" => [%{"href" => data["image"]["url"]}]
418 "ap_enabled" => true,
419 "source_data" => data,
423 nickname: "#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}",
425 follower_address: data["followers"],
432 def fetch_and_prepare_user_from_ap_id(ap_id) do
433 with {:ok, %{status_code: 200, body: body}} <-
434 @httpoison.get(ap_id, Accept: "application/activity+json"),
435 {:ok, data} <- Jason.decode(body) do
436 user_data_from_user_object(data)
438 e -> Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
442 def make_user_from_ap_id(ap_id) do
443 if _user = User.get_by_ap_id(ap_id) do
444 Transmogrifier.upgrade_user_from_ap_id(ap_id)
446 with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
447 User.insert_or_update_user(data)
454 def make_user_from_nickname(nickname) do
455 with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
456 make_user_from_ap_id(ap_id)
458 _e -> {:error, "No AP id in WebFinger"}
462 def publish(actor, activity) do
464 if actor.follower_address in activity.recipients do
465 {:ok, followers} = User.get_followers(actor)
466 followers |> Enum.filter(&(!&1.local))
472 (Pleroma.Web.Salmon.remote_users(activity) ++ followers)
473 |> Enum.filter(fn user -> User.ap_enabled?(user) end)
474 |> Enum.map(fn %{info: %{"source_data" => data}} ->
475 (data["endpoints"] && data["endpoints"]["sharedInbox"]) || data["inbox"]
479 {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
480 json = Jason.encode!(data)
482 Enum.each(remote_inboxes, fn inbox ->
483 Federator.enqueue(:publish_single_ap, %{
487 id: activity.data["id"]
492 def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
493 Logger.info("Federating #{id} to #{inbox}")
494 host = URI.parse(inbox).host
497 Pleroma.Web.HTTPSignatures.sign(actor, %{host: host, "content-length": byte_size(json)})
502 [{"Content-Type", "application/activity+json"}, {"signature", signature}],
503 hackney: [pool: :default]
508 # This will create a Create activity, which we need internally at the moment.
509 def fetch_object_from_id(id) do
510 if object = Object.get_cached_by_ap_id(id) do
513 Logger.info("Fetching #{id} via AP")
515 with true <- String.starts_with?(id, "http"),
516 {:ok, %{body: body, status_code: code}} when code in 200..299 <-
519 [Accept: "application/activity+json"],
520 follow_redirect: true,
524 {:ok, data} <- Jason.decode(body),
525 nil <- Object.get_by_ap_id(data["id"]),
530 "actor" => data["attributedTo"],
533 {:ok, activity} <- Transmogrifier.handle_incoming(params) do
534 {:ok, Object.get_by_ap_id(activity.data["object"]["id"])}
536 object = %Object{} ->
540 Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
542 case OStatus.fetch_activity_from_url(id) do
543 {:ok, [activity | _]} -> {:ok, Object.get_by_ap_id(activity.data["object"]["id"])}
550 def is_public?(activity) do
551 "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++
552 (activity.data["cc"] || []))
555 def visible_for_user?(activity, nil) do
559 def visible_for_user?(activity, user) do
560 x = [user.ap_id | user.following]
561 y = activity.data["to"] ++ (activity.data["cc"] || [])
562 visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))