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318 lines
9.9 KiB
Elixir
318 lines
9.9 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.ActivityPub.ActivityPubController do
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use Pleroma.Web, :controller
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alias Pleroma.Activity
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alias Pleroma.Object
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alias Pleroma.Object.Fetcher
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alias Pleroma.User
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alias Pleroma.Web.ActivityPub.ActivityPub
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alias Pleroma.Web.ActivityPub.ObjectView
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alias Pleroma.Web.ActivityPub.Relay
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alias Pleroma.Web.ActivityPub.Transmogrifier
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alias Pleroma.Web.ActivityPub.UserView
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alias Pleroma.Web.ActivityPub.Utils
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alias Pleroma.Web.ActivityPub.Visibility
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alias Pleroma.Web.Federator
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require Logger
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action_fallback(:errors)
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plug(Pleroma.Web.FederatingPlug when action in [:inbox, :relay])
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plug(:set_requester_reachable when action in [:inbox])
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plug(:relay_active? when action in [:relay])
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def relay_active?(conn, _) do
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if Keyword.get(Application.get_env(:pleroma, :instance), :allow_relay) do
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conn
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else
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conn
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|> put_status(404)
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|> json(%{error: "not found"})
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|> halt
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end
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end
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def user(conn, %{"nickname" => nickname}) do
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with %User{} = user <- User.get_cached_by_nickname(nickname),
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{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(UserView.render("user.json", %{user: user}))
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else
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nil -> {:error, :not_found}
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end
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end
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def object(conn, %{"uuid" => uuid}) do
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with ap_id <- o_status_url(conn, :object, uuid),
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%Object{} = object <- Object.get_cached_by_ap_id(ap_id),
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{_, true} <- {:public?, Visibility.is_public?(object)} do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(ObjectView.render("object.json", %{object: object}))
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else
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{:public?, false} ->
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{:error, :not_found}
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end
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end
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def object_likes(conn, %{"uuid" => uuid, "page" => page}) do
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with ap_id <- o_status_url(conn, :object, uuid),
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%Object{} = object <- Object.get_cached_by_ap_id(ap_id),
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{_, true} <- {:public?, Visibility.is_public?(object)},
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likes <- Utils.get_object_likes(object) do
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{page, _} = Integer.parse(page)
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(ObjectView.render("likes.json", ap_id, likes, page))
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else
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{:public?, false} ->
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{:error, :not_found}
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end
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end
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def object_likes(conn, %{"uuid" => uuid}) do
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with ap_id <- o_status_url(conn, :object, uuid),
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%Object{} = object <- Object.get_cached_by_ap_id(ap_id),
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{_, true} <- {:public?, Visibility.is_public?(object)},
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likes <- Utils.get_object_likes(object) do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(ObjectView.render("likes.json", ap_id, likes))
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else
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{:public?, false} ->
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{:error, :not_found}
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end
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end
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def activity(conn, %{"uuid" => uuid}) do
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with ap_id <- o_status_url(conn, :activity, uuid),
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%Activity{} = activity <- Activity.normalize(ap_id),
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{_, true} <- {:public?, Visibility.is_public?(activity)} do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(ObjectView.render("object.json", %{object: activity}))
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else
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{:public?, false} ->
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{:error, :not_found}
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end
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end
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def following(conn, %{"nickname" => nickname, "page" => page}) do
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with %User{} = user <- User.get_cached_by_nickname(nickname),
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{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
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{page, _} = Integer.parse(page)
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(UserView.render("following.json", %{user: user, page: page}))
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end
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end
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def following(conn, %{"nickname" => nickname}) do
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with %User{} = user <- User.get_cached_by_nickname(nickname),
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{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(UserView.render("following.json", %{user: user}))
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end
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end
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def followers(conn, %{"nickname" => nickname, "page" => page}) do
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with %User{} = user <- User.get_cached_by_nickname(nickname),
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{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
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{page, _} = Integer.parse(page)
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(UserView.render("followers.json", %{user: user, page: page}))
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end
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end
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def followers(conn, %{"nickname" => nickname}) do
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with %User{} = user <- User.get_cached_by_nickname(nickname),
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{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(UserView.render("followers.json", %{user: user}))
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end
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end
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def outbox(conn, %{"nickname" => nickname} = params) do
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with %User{} = user <- User.get_cached_by_nickname(nickname),
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{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(UserView.render("outbox.json", %{user: user, max_id: params["max_id"]}))
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end
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end
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def inbox(%{assigns: %{valid_signature: true}} = conn, %{"nickname" => nickname} = params) do
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with %User{} = recipient <- User.get_cached_by_nickname(nickname),
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{:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(params["actor"]),
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true <- Utils.recipient_in_message(recipient, actor, params),
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params <- Utils.maybe_splice_recipient(recipient.ap_id, params) do
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Federator.incoming_ap_doc(params)
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json(conn, "ok")
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end
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end
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def inbox(%{assigns: %{valid_signature: true}} = conn, params) do
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Federator.incoming_ap_doc(params)
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json(conn, "ok")
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end
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# only accept relayed Creates
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def inbox(conn, %{"type" => "Create"} = params) do
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Logger.info(
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"Signature missing or not from author, relayed Create message, fetching object from source"
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)
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Fetcher.fetch_object_from_id(params["object"]["id"])
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json(conn, "ok")
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end
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def inbox(conn, params) do
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headers = Enum.into(conn.req_headers, %{})
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if String.contains?(headers["signature"], params["actor"]) do
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Logger.info(
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"Signature validation error for: #{params["actor"]}, make sure you are forwarding the HTTP Host header!"
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)
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Logger.info(inspect(conn.req_headers))
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end
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json(conn, "error")
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end
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def relay(conn, _params) do
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with %User{} = user <- Relay.get_actor(),
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{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(UserView.render("user.json", %{user: user}))
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else
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nil -> {:error, :not_found}
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end
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end
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def whoami(%{assigns: %{user: %User{} = user}} = conn, _params) do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(UserView.render("user.json", %{user: user}))
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end
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def whoami(_conn, _params), do: {:error, :not_found}
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def read_inbox(%{assigns: %{user: user}} = conn, %{"nickname" => nickname} = params) do
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if nickname == user.nickname do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(UserView.render("inbox.json", %{user: user, max_id: params["max_id"]}))
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else
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conn
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|> put_status(:forbidden)
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|> json("can't read inbox of #{nickname} as #{user.nickname}")
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end
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end
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def handle_user_activity(user, %{"type" => "Create"} = params) do
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object =
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params["object"]
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|> Map.merge(Map.take(params, ["to", "cc"]))
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|> Map.put("attributedTo", user.ap_id())
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|> Transmogrifier.fix_object()
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ActivityPub.create(%{
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to: params["to"],
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actor: user,
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context: object["context"],
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object: object,
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additional: Map.take(params, ["cc"])
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})
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end
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def handle_user_activity(user, %{"type" => "Delete"} = params) do
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with %Object{} = object <- Object.normalize(params["object"]),
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true <- user.info.is_moderator || user.ap_id == object.data["actor"],
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{:ok, delete} <- ActivityPub.delete(object) do
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{:ok, delete}
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else
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_ -> {:error, "Can't delete object"}
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end
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end
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def handle_user_activity(user, %{"type" => "Like"} = params) do
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with %Object{} = object <- Object.normalize(params["object"]),
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{:ok, activity, _object} <- ActivityPub.like(user, object) do
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{:ok, activity}
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else
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_ -> {:error, "Can't like object"}
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end
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end
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def handle_user_activity(_, _) do
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{:error, "Unhandled activity type"}
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end
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def update_outbox(
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%{assigns: %{user: user}} = conn,
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%{"nickname" => nickname} = params
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) do
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if nickname == user.nickname do
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actor = user.ap_id()
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params =
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params
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|> Map.drop(["id"])
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|> Map.put("actor", actor)
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|> Transmogrifier.fix_addressing()
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with {:ok, %Activity{} = activity} <- handle_user_activity(user, params) do
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conn
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|> put_status(:created)
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|> put_resp_header("location", activity.data["id"])
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|> json(activity.data)
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else
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{:error, message} ->
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conn
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|> put_status(:bad_request)
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|> json(message)
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end
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else
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conn
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|> put_status(:forbidden)
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|> json("can't update outbox of #{nickname} as #{user.nickname}")
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end
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end
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def errors(conn, {:error, :not_found}) do
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conn
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|> put_status(404)
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|> json("Not found")
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end
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def errors(conn, _e) do
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conn
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|> put_status(500)
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|> json("error")
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end
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defp set_requester_reachable(%Plug.Conn{} = conn, _) do
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with actor <- conn.params["actor"],
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true <- is_binary(actor) do
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Pleroma.Instances.set_reachable(actor)
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end
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conn
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end
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end
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