250 lines
7.9 KiB
Elixir
250 lines
7.9 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.OStatus.OStatusController do
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use Pleroma.Web, :controller
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alias Fallback.RedirectController
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alias Pleroma.Activity
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alias Pleroma.Object
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alias Pleroma.User
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alias Pleroma.Web.ActivityPub.ActivityPub
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alias Pleroma.Web.ActivityPub.ActivityPubController
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alias Pleroma.Web.ActivityPub.ObjectView
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alias Pleroma.Web.ActivityPub.Visibility
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alias Pleroma.Web.Endpoint
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alias Pleroma.Web.Federator
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alias Pleroma.Web.Metadata.PlayerView
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alias Pleroma.Web.OStatus
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alias Pleroma.Web.OStatus.ActivityRepresenter
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alias Pleroma.Web.OStatus.FeedRepresenter
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alias Pleroma.Web.Router
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alias Pleroma.Web.XML
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plug(
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Pleroma.Plugs.RateLimiter,
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{:ap_routes, params: ["uuid"]} when action in [:object, :activity]
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)
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plug(Pleroma.Web.FederatingPlug when action in [:salmon_incoming])
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plug(
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Pleroma.Plugs.SetFormatPlug
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when action in [:feed_redirect, :object, :activity, :notice]
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)
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action_fallback(:errors)
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def feed_redirect(%{assigns: %{format: "html"}} = conn, %{"nickname" => nickname}) do
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with {_, %User{} = user} <- {:fetch_user, User.get_cached_by_nickname_or_id(nickname)} do
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RedirectController.redirector_with_meta(conn, %{user: user})
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end
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end
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def feed_redirect(%{assigns: %{format: format}} = conn, _params)
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when format in ["json", "activity+json"] do
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ActivityPubController.call(conn, :user)
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end
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def feed_redirect(conn, %{"nickname" => nickname}) do
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with {_, %User{} = user} <- {:fetch_user, User.get_cached_by_nickname(nickname)} do
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redirect(conn, external: OStatus.feed_path(user))
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end
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end
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def feed(conn, %{"nickname" => nickname} = params) do
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with {_, %User{} = user} <- {:fetch_user, User.get_cached_by_nickname(nickname)} do
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activities =
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params
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|> Map.take(["max_id"])
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|> Map.merge(%{"whole_db" => true, "actor_id" => user.ap_id})
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|> ActivityPub.fetch_public_activities()
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|> Enum.reverse()
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response =
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user
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|> FeedRepresenter.to_simple_form(activities, [user])
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|> :xmerl.export_simple(:xmerl_xml)
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|> to_string
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conn
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|> put_resp_content_type("application/atom+xml")
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|> send_resp(200, response)
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end
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end
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defp decode_or_retry(body) do
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with {:ok, magic_key} <- Pleroma.Web.Salmon.fetch_magic_key(body),
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{:ok, doc} <- Pleroma.Web.Salmon.decode_and_validate(magic_key, body) do
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{:ok, doc}
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else
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_e ->
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with [decoded | _] <- Pleroma.Web.Salmon.decode(body),
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doc <- XML.parse_document(decoded),
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uri when not is_nil(uri) <- XML.string_from_xpath("/entry/author[1]/uri", doc),
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{:ok, _} <- Pleroma.Web.OStatus.make_user(uri, true),
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{:ok, magic_key} <- Pleroma.Web.Salmon.fetch_magic_key(body),
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{:ok, doc} <- Pleroma.Web.Salmon.decode_and_validate(magic_key, body) do
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{:ok, doc}
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end
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end
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end
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def salmon_incoming(conn, _) do
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{:ok, body, _conn} = read_body(conn)
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{:ok, doc} = decode_or_retry(body)
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Federator.incoming_doc(doc)
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send_resp(conn, 200, "")
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end
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def object(%{assigns: %{format: format}} = conn, %{"uuid" => _uuid})
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when format in ["json", "activity+json"] do
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ActivityPubController.call(conn, :object)
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end
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def object(%{assigns: %{format: format}} = conn, %{"uuid" => uuid}) do
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with id <- o_status_url(conn, :object, uuid),
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{_, %Activity{} = activity} <-
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{:activity, Activity.get_create_by_object_ap_id_with_object(id)},
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{_, true} <- {:public?, Visibility.is_public?(activity)},
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%User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
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case format do
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"html" -> redirect(conn, to: "/notice/#{activity.id}")
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_ -> represent_activity(conn, nil, activity, user)
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end
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else
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reason when reason in [{:public?, false}, {:activity, nil}] ->
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{:error, :not_found}
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e ->
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e
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end
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end
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def activity(%{assigns: %{format: format}} = conn, %{"uuid" => _uuid})
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when format in ["json", "activity+json"] do
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ActivityPubController.call(conn, :activity)
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end
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def activity(%{assigns: %{format: format}} = conn, %{"uuid" => uuid}) do
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with id <- o_status_url(conn, :activity, uuid),
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{_, %Activity{} = activity} <- {:activity, Activity.normalize(id)},
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{_, true} <- {:public?, Visibility.is_public?(activity)},
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%User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
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case format do
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"html" -> redirect(conn, to: "/notice/#{activity.id}")
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_ -> represent_activity(conn, format, activity, user)
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end
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else
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reason when reason in [{:public?, false}, {:activity, nil}] ->
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{:error, :not_found}
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e ->
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e
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end
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end
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def notice(%{assigns: %{format: format}} = conn, %{"id" => id}) do
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with {_, %Activity{} = activity} <- {:activity, Activity.get_by_id_with_object(id)},
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{_, true} <- {:public?, Visibility.is_public?(activity)},
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%User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
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cond do
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format == "html" && activity.data["type"] == "Create" ->
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%Object{} = object = Object.normalize(activity)
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RedirectController.redirector_with_meta(
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conn,
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%{
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activity_id: activity.id,
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object: object,
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url: Router.Helpers.o_status_url(Endpoint, :notice, activity.id),
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user: user
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}
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)
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format == "html" ->
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RedirectController.redirector(conn, nil)
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true ->
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represent_activity(conn, format, activity, user)
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end
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else
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reason when reason in [{:public?, false}, {:activity, nil}] ->
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conn
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|> put_status(404)
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|> RedirectController.redirector(nil, 404)
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e ->
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e
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end
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end
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# Returns an HTML embedded <audio> or <video> player suitable for embed iframes.
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def notice_player(conn, %{"id" => id}) do
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with %Activity{data: %{"type" => "Create"}} = activity <- Activity.get_by_id_with_object(id),
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true <- Visibility.is_public?(activity),
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%Object{} = object <- Object.normalize(activity),
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%{data: %{"attachment" => [%{"url" => [url | _]} | _]}} <- object,
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true <- String.starts_with?(url["mediaType"], ["audio", "video"]) do
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conn
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|> put_layout(:metadata_player)
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|> put_resp_header("x-frame-options", "ALLOW")
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|> put_resp_header(
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"content-security-policy",
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"default-src 'none';style-src 'self' 'unsafe-inline';img-src 'self' data: https:; media-src 'self' https:;"
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)
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|> put_view(PlayerView)
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|> render("player.html", url)
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else
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_error ->
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conn
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|> put_status(404)
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|> RedirectController.redirector(nil, 404)
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end
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end
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defp represent_activity(
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conn,
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"activity+json",
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%Activity{data: %{"type" => "Create"}} = activity,
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_user
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) do
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object = Object.normalize(activity)
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> put_view(ObjectView)
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|> render("object.json", %{object: object})
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end
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defp represent_activity(_conn, "activity+json", _, _) do
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{:error, :not_found}
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end
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defp represent_activity(conn, _, activity, user) do
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response =
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activity
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|> ActivityRepresenter.to_simple_form(user, true)
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|> ActivityRepresenter.wrap_with_entry()
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|> :xmerl.export_simple(:xmerl_xml)
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|> to_string
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conn
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|> put_resp_content_type("application/atom+xml")
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|> send_resp(200, response)
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end
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def errors(conn, {:error, :not_found}) do
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render_error(conn, :not_found, "Not found")
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end
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def errors(conn, {:fetch_user, nil}), do: errors(conn, {:error, :not_found})
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def errors(conn, _) do
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render_error(conn, :internal_server_error, "Something went wrong")
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end
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end
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