defmodule Pleroma.Web.ActivityPub.ActivityPub do alias Pleroma.{Activity, Repo, Object, Upload, User, Notification} import Ecto.Query import Pleroma.Web.ActivityPub.Utils require Logger @httpoison Application.get_env(:pleroma, :httpoison) def get_recipients(data) do (data["to"] || []) ++ (data["cc"] || []) end def insert(map, local \\ true) when is_map(map) do with nil <- Activity.get_by_ap_id(map["id"]), map <- lazy_put_activity_defaults(map), :ok <- insert_full_object(map) do {:ok, activity} = Repo.insert(%Activity{data: map, local: local, actor: map["actor"], recipients: get_recipients(map)}) Notification.create_notifications(activity) stream_out(activity) {:ok, activity} else %Activity{} = activity -> {:ok, activity} error -> {:error, error} end end def stream_out(activity) do if activity.data["type"] in ["Create", "Announce"] do Pleroma.Web.Streamer.stream("user", activity) if Enum.member?(activity.data["to"], "https://www.w3.org/ns/activitystreams#Public") do Pleroma.Web.Streamer.stream("public", activity) if activity.local do Pleroma.Web.Streamer.stream("public:local", activity) end end end end def create(%{to: to, actor: actor, context: context, object: object} = params) do additional = params[:additional] || %{} local = !(params[:local] == false) # only accept false as false value published = params[:published] with create_data <- make_create_data(%{to: to, actor: actor, published: published, context: context, object: object}, additional), {:ok, activity} <- insert(create_data, local), :ok <- maybe_federate(activity) do {:ok, activity} end end # TODO: This is weird, maybe we shouldn't check here if we can make the activity. def like(%User{ap_id: ap_id} = user, %Object{data: %{"id" => _}} = object, activity_id \\ nil, local \\ true) do with nil <- get_existing_like(ap_id, object), like_data <- make_like_data(user, object, activity_id), {:ok, activity} <- insert(like_data, local), {:ok, object} <- add_like_to_object(activity, object), :ok <- maybe_federate(activity) do {:ok, activity, object} else %Activity{} = activity -> {:ok, activity, object} error -> {:error, error} end end def unlike(%User{} = actor, %Object{} = object) do with %Activity{} = activity <- get_existing_like(actor.ap_id, object), {:ok, _activity} <- Repo.delete(activity), {:ok, object} <- remove_like_from_object(activity, object) do {:ok, object} else _e -> {:ok, object} end end def announce(%User{ap_id: _} = user, %Object{data: %{"id" => _}} = object, activity_id \\ nil, local \\ true) do with announce_data <- make_announce_data(user, object, activity_id), {:ok, activity} <- insert(announce_data, local), {:ok, object} <- add_announce_to_object(activity, object), :ok <- maybe_federate(activity) do {:ok, activity, object} else error -> {:error, error} end end def follow(follower, followed, activity_id \\ nil, local \\ true) do with data <- make_follow_data(follower, followed, activity_id), {:ok, activity} <- insert(data, local), :ok <- maybe_federate(activity) do {:ok, activity} end end def unfollow(follower, followed, local \\ true) do with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed), unfollow_data <- make_unfollow_data(follower, followed, follow_activity), {:ok, activity} <- insert(unfollow_data, local), :ok, maybe_federate(activity) do {:ok, activity} end end def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do user = User.get_cached_by_ap_id(actor) data = %{ "type" => "Delete", "actor" => actor, "object" => id, "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"] } with Repo.delete(object), Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)), {:ok, activity} <- insert(data, local), :ok <- maybe_federate(activity) do {:ok, activity} end end def fetch_activities_for_context(context, opts \\ %{}) do query = from activity in Activity, where: fragment("?->>'type' = ? and ?->>'context' = ?", activity.data, "Create", activity.data, ^context), order_by: [desc: :id] query = restrict_blocked(query, opts) Repo.all(query) end def fetch_public_activities(opts \\ %{}) do public = ["https://www.w3.org/ns/activitystreams#Public"] fetch_activities(public, opts) end defp restrict_since(query, %{"since_id" => since_id}) do from activity in query, where: activity.id > ^since_id end defp restrict_since(query, _), do: query defp restrict_tag(query, %{"tag" => tag}) do from activity in query, where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data) end defp restrict_tag(query, _), do: query defp restrict_recipients(query, []), do: query defp restrict_recipients(query, recipients) do from activity in query, where: fragment("? && ?", ^recipients, activity.recipients) end defp restrict_local(query, %{"local_only" => true}) do from activity in query, where: activity.local == true end defp restrict_local(query, _), do: query defp restrict_max(query, %{"max_id" => max_id}) do from activity in query, where: activity.id < ^max_id end defp restrict_max(query, _), do: query defp restrict_actor(query, %{"actor_id" => actor_id}) do from activity in query, where: activity.actor == ^actor_id end defp restrict_actor(query, _), do: query defp restrict_type(query, %{"type" => type}) when is_binary(type) do restrict_type(query, %{"type" => [type]}) end defp restrict_type(query, %{"type" => type}) do from activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type) end defp restrict_type(query, _), do: query defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do from activity in query, where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data) end defp restrict_favorited_by(query, _), do: query defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do from activity in query, where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[]) end defp restrict_media(query, _), do: query # Only search through last 100_000 activities by default defp restrict_recent(query, %{"whole_db" => true}), do: query defp restrict_recent(query, _) do since = (Repo.aggregate(Activity, :max, :id) || 0) - 100_000 from activity in query, where: activity.id > ^since end defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do blocks = info["blocks"] || [] from activity in query, where: fragment("not (? = ANY(?))", activity.actor, ^blocks) end defp restrict_blocked(query, _), do: query def fetch_activities(recipients, opts \\ %{}) do base_query = from activity in Activity, limit: 20, order_by: [fragment("? desc nulls last", activity.id)] base_query |> restrict_recipients(recipients) |> restrict_tag(opts) |> restrict_since(opts) |> restrict_local(opts) |> restrict_max(opts) |> restrict_actor(opts) |> restrict_type(opts) |> restrict_favorited_by(opts) |> restrict_recent(opts) |> restrict_blocked(opts) |> restrict_media(opts) |> Repo.all |> Enum.reverse end def upload(file) do data = Upload.store(file) Repo.insert(%Object{data: data}) end def make_user_from_ap_id(ap_id) do with {:ok, %{status_code: 200, body: body}} <- @httpoison.get(ap_id, ["Accept": "application/activity+json"]), {:ok, data} <- Poison.decode(body) do user_data = %{ ap_id: data["id"], info: %{ "ap_enabled" => true, "source_data" => data }, nickname: "#{data["preferredUsername"]}@#{URI.parse(ap_id).host}", name: data["name"] } User.insert_or_update_user(user_data) end end # TODO: Extract to own module, align as close to Mastodon format as possible. def sanitize_outgoing_activity_data(data) do data |> Map.put("@context", "https://www.w3.org/ns/activitystreams") end def publish(actor, activity) do remote_users = Pleroma.Web.Salmon.remote_users(activity) data = sanitize_outgoing_activity_data(activity.data) Enum.each remote_users, fn(user) -> if user.info["ap_enabled"] do inbox = user.info["source_data"]["inbox"] Logger.info("Federating #{activity.data["id"]} to #{inbox}") host = URI.parse(inbox).host signature = Pleroma.Web.HTTPSignatures.sign(actor, %{host: host}) @httpoison.post(inbox, Poison.encode!(data), [{"Content-Type", "application/activity+json"}, {"signature", signature}]) end end end end