# Pleroma: A lightweight social networking server # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/> # SPDX-License-Identifier: AGPL-3.0-only defmodule Pleroma.Activity do use Ecto.Schema alias Pleroma.Activity alias Pleroma.Activity.Queries alias Pleroma.Bookmark alias Pleroma.Notification alias Pleroma.Object alias Pleroma.Repo alias Pleroma.ReportNote alias Pleroma.ThreadMute alias Pleroma.User alias Pleroma.Web.ActivityPub.ActivityPub import Ecto.Changeset import Ecto.Query @type t :: %__MODULE__{} @type actor :: String.t() @primary_key {:id, FlakeId.Ecto.CompatType, autogenerate: true} @cachex Pleroma.Config.get([:cachex, :provider], Cachex) schema "activities" do field(:data, :map) field(:local, :boolean, default: true) field(:actor, :string) field(:recipients, {:array, :string}, default: []) field(:thread_muted?, :boolean, virtual: true) # A field that can be used if you need to join some kind of other # id to order / paginate this field by field(:pagination_id, :string, virtual: true) # This is a fake relation, # do not use outside of with_preloaded_user_actor/with_joined_user_actor has_one(:user_actor, User, on_delete: :nothing, foreign_key: :id) # This is a fake relation, do not use outside of with_preloaded_bookmark/get_bookmark has_one(:bookmark, Bookmark) # This is a fake relation, do not use outside of with_preloaded_report_notes has_many(:report_notes, ReportNote) has_many(:notifications, Notification, on_delete: :delete_all) # Attention: this is a fake relation, don't try to preload it blindly and expect it to work! # The foreign key is embedded in a jsonb field. # # To use it, you probably want to do an inner join and a preload: # # ``` # |> join(:inner, [activity], o in Object, # on: fragment("(?->>'id') = COALESCE((?)->'object'->> 'id', (?)->>'object')", # o.data, activity.data, activity.data)) # |> preload([activity, object], [object: object]) # ``` # # As a convenience, Activity.with_preloaded_object() sets up an inner join and preload for the # typical case. has_one(:object, Object, on_delete: :nothing, foreign_key: :id) timestamps() end def with_joined_object(query, join_type \\ :inner) do join(query, join_type, [activity], o in Object, on: fragment( "(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')", o.data, activity.data, activity.data ), as: :object ) end def with_preloaded_object(query, join_type \\ :inner) do query |> has_named_binding?(:object) |> if(do: query, else: with_joined_object(query, join_type)) |> preload([activity, object: object], object: object) end # Note: applies to fake activities (ActivityPub.Utils.get_notified_from_object/1 etc.) def user_actor(%Activity{actor: nil}), do: nil def user_actor(%Activity{} = activity) do with %User{} <- activity.user_actor do activity.user_actor else _ -> User.get_cached_by_ap_id(activity.actor) end end def with_joined_user_actor(query, join_type \\ :inner) do join(query, join_type, [activity], u in User, on: u.ap_id == activity.actor, as: :user_actor ) end def with_preloaded_user_actor(query, join_type \\ :inner) do query |> with_joined_user_actor(join_type) |> preload([activity, user_actor: user_actor], user_actor: user_actor) end def with_preloaded_bookmark(query, %User{} = user) do from([a] in query, left_join: b in Bookmark, on: b.user_id == ^user.id and b.activity_id == a.id, as: :bookmark, preload: [bookmark: b] ) end def with_preloaded_bookmark(query, _), do: query def with_preloaded_report_notes(query) do from([a] in query, left_join: r in ReportNote, on: a.id == r.activity_id, as: :report_note, preload: [report_notes: r] ) end def with_preloaded_report_notes(query, _), do: query def with_set_thread_muted_field(query, %User{} = user) do from([a] in query, left_join: tm in ThreadMute, on: tm.user_id == ^user.id and tm.context == fragment("?->>'context'", a.data), as: :thread_mute, select: %Activity{a | thread_muted?: not is_nil(tm.id)} ) end def with_set_thread_muted_field(query, _), do: query def get_by_ap_id(ap_id) do ap_id |> Queries.by_ap_id() |> Repo.one() end def get_bookmark(%Activity{} = activity, %User{} = user) do if Ecto.assoc_loaded?(activity.bookmark) do activity.bookmark else Bookmark.get(user.id, activity.id) end end def get_bookmark(_, _), do: nil def get_report(activity_id) do opts = %{ type: "Flag", skip_preload: true, preload_report_notes: true } ActivityPub.fetch_activities_query([], opts) |> where(id: ^activity_id) |> Repo.one() end def change(struct, params \\ %{}) do struct |> cast(params, [:data, :recipients]) |> validate_required([:data]) |> unique_constraint(:ap_id, name: :activities_unique_apid_index) end def get_by_ap_id_with_object(ap_id) do ap_id |> Queries.by_ap_id() |> with_preloaded_object(:left) |> Repo.one() end @doc """ Gets activity by ID, doesn't load activities from deactivated actors by default. """ @spec get_by_id(String.t(), keyword()) :: t() | nil def get_by_id(id, opts \\ [filter: [:restrict_deactivated]]), do: get_by_id_with_opts(id, opts) @spec get_by_id_with_user_actor(String.t()) :: t() | nil def get_by_id_with_user_actor(id), do: get_by_id_with_opts(id, preload: [:user_actor]) @spec get_by_id_with_object(String.t()) :: t() | nil def get_by_id_with_object(id), do: get_by_id_with_opts(id, preload: [:object]) defp get_by_id_with_opts(id, opts) do if FlakeId.flake_id?(id) do query = Queries.by_id(id) with_filters_query = if is_list(opts[:filter]) do Enum.reduce(opts[:filter], query, fn {:type, type}, acc -> Queries.by_type(acc, type) :restrict_deactivated, acc -> restrict_deactivated_users(acc) _, acc -> acc end) else query end with_preloads_query = if is_list(opts[:preload]) do Enum.reduce(opts[:preload], with_filters_query, fn :user_actor, acc -> with_preloaded_user_actor(acc) :object, acc -> with_preloaded_object(acc) _, acc -> acc end) else with_filters_query end Repo.one(with_preloads_query) end end def all_by_ids_with_object(ids) do Activity |> where([a], a.id in ^ids) |> with_preloaded_object() |> Repo.all() end @doc """ Accepts `ap_id` or list of `ap_id`. Returns a query. """ @spec create_by_object_ap_id(String.t() | [String.t()]) :: Ecto.Queryable.t() def create_by_object_ap_id(ap_id) do ap_id |> Queries.by_object_id() |> Queries.by_type("Create") end def get_all_create_by_object_ap_id(ap_id) do ap_id |> create_by_object_ap_id() |> Repo.all() end def get_create_by_object_ap_id(ap_id) when is_binary(ap_id) do create_by_object_ap_id(ap_id) |> restrict_deactivated_users() |> Repo.one() end def get_create_by_object_ap_id(_), do: nil @doc """ Accepts a list of `ap__id`. Returns a query yielding Create activities for the given objects, in the same order as they were specified in the input list. """ @spec get_presorted_create_by_object_ap_id([String.t()]) :: Ecto.Queryable.t() def get_presorted_create_by_object_ap_id(ap_ids) do from( a in Activity, join: ids in fragment( "SELECT * FROM UNNEST(?::text[]) WITH ORDINALITY AS ids(ap_id, ord)", ^ap_ids ), on: ids.ap_id == fragment("?->>'object'", a.data) and fragment("?->>'type'", a.data) == "Create", order_by: [asc: ids.ord] ) end @doc """ Accepts `ap_id` or list of `ap_id`. Returns a query. """ @spec create_by_object_ap_id_with_object(String.t() | [String.t()]) :: Ecto.Queryable.t() def create_by_object_ap_id_with_object(ap_id) do ap_id |> create_by_object_ap_id() |> with_preloaded_object() end def get_create_by_object_ap_id_with_object(ap_id) when is_binary(ap_id) do ap_id |> create_by_object_ap_id_with_object() |> Repo.one() end def get_create_by_object_ap_id_with_object(_), do: nil def get_local_create_by_object_ap_id(ap_id) when is_binary(ap_id) do ap_id |> create_by_object_ap_id() |> where(local: true) |> Repo.one() end @spec create_by_id_with_object(String.t()) :: t() | nil def create_by_id_with_object(id) do get_by_id_with_opts(id, preload: [:object], filter: [type: "Create"]) end defp get_in_reply_to_activity_from_object(%Object{data: %{"inReplyTo" => ap_id}}) do get_create_by_object_ap_id_with_object(ap_id) end defp get_in_reply_to_activity_from_object(_), do: nil def get_in_reply_to_activity(%Activity{} = activity) do get_in_reply_to_activity_from_object(Object.normalize(activity, fetch: false)) end def get_quoted_activity_from_object(%Object{data: %{"quoteUri" => ap_id}}) do get_create_by_object_ap_id_with_object(ap_id) end def get_quoted_activity_from_object(_), do: nil def normalize(%Activity{data: %{"id" => ap_id}}), do: get_by_ap_id_with_object(ap_id) def normalize(%{"id" => ap_id}), do: get_by_ap_id_with_object(ap_id) def normalize(ap_id) when is_binary(ap_id), do: get_by_ap_id_with_object(ap_id) def normalize(_), do: nil def delete_all_by_object_ap_id(id) when is_binary(id) do id |> Queries.by_object_id() |> Queries.exclude_type("Delete") |> select([u], u) |> Repo.delete_all(timeout: :infinity) |> elem(1) |> Enum.find(fn %{data: %{"type" => "Create", "object" => ap_id}} when is_binary(ap_id) -> ap_id == id %{data: %{"type" => "Create", "object" => %{"id" => ap_id}}} -> ap_id == id _ -> nil end) |> purge_web_resp_cache() end def delete_all_by_object_ap_id(_), do: nil defp purge_web_resp_cache(%Activity{data: %{"id" => id}} = activity) when is_binary(id) do with %{path: path} <- URI.parse(id) do @cachex.del(:web_resp_cache, path) end activity end defp purge_web_resp_cache(activity), do: activity def follow_accepted?( %Activity{data: %{"type" => "Follow", "object" => followed_ap_id}} = activity ) do with %User{} = follower <- Activity.user_actor(activity), %User{} = followed <- User.get_cached_by_ap_id(followed_ap_id) do Pleroma.FollowingRelationship.following?(follower, followed) else _ -> false end end def follow_accepted?(_), do: false def all_by_actor_and_id(actor, status_ids \\ []) def all_by_actor_and_id(_actor, []), do: [] def all_by_actor_and_id(actor, status_ids) do Activity |> where([s], s.id in ^status_ids) |> where([s], s.actor == ^actor) |> Repo.all() end def follow_requests_for_actor(%User{ap_id: ap_id}) do ap_id |> Queries.by_object_id() |> Queries.by_type("Follow") |> where([a], fragment("? ->> 'state' = 'pending'", a.data)) end def following_requests_for_actor(%User{ap_id: ap_id}) do Queries.by_type("Follow") |> where([a], fragment("?->>'state' = 'pending'", a.data)) |> where([a], a.actor == ^ap_id) |> Repo.all() end def follow_activity(%User{ap_id: ap_id}, %User{ap_id: followed_ap_id}) do Queries.by_type("Follow") |> where([a], a.actor == ^ap_id) |> where([a], fragment("?->>'object' = ?", a.data, ^followed_ap_id)) |> where([a], fragment("?->>'state'", a.data) in ["pending", "accept"]) |> Repo.one() end def restrict_deactivated_users(query) do query |> join( :inner_lateral, [activity], active in fragment( "SELECT is_active from users WHERE ap_id = ? AND is_active = TRUE", activity.actor ), on: true ) end defdelegate search(user, query, options \\ []), to: Pleroma.Search.DatabaseSearch def direct_conversation_id(activity, for_user) do alias Pleroma.Conversation.Participation with %{data: %{"context" => context}} when is_binary(context) <- activity, %Pleroma.Conversation{} = conversation <- Pleroma.Conversation.get_for_ap_id(context), %Participation{id: participation_id} <- Participation.for_user_and_conversation(for_user, conversation) do participation_id else _ -> nil end end @spec get_by_object_ap_id_with_object(String.t()) :: t() | nil def get_by_object_ap_id_with_object(ap_id) when is_binary(ap_id) do ap_id |> Queries.by_object_id() |> with_preloaded_object() |> first() |> Repo.one() end def get_by_object_ap_id_with_object(_), do: nil @spec add_by_params_query(String.t(), String.t(), String.t()) :: Ecto.Query.t() def add_by_params_query(object_id, actor, target) do object_id |> Queries.by_object_id() |> Queries.by_type("Add") |> Queries.by_actor(actor) |> where([a], fragment("?->>'target' = ?", a.data, ^target)) end end