distraction.party/lib/pleroma/web/ostatus/ostatus_controller.ex
2019-03-13 04:26:54 +01:00

257 lines
7.7 KiB
Elixir

# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.OStatus.OStatusController do
use Pleroma.Web, :controller
alias Pleroma.Activity
alias Pleroma.Object
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.ActivityPubController
alias Pleroma.Web.ActivityPub.ObjectView
alias Pleroma.Web.ActivityPub.Visibility
alias Pleroma.Web.Federator
alias Pleroma.Web.OStatus
alias Pleroma.Web.OStatus.ActivityRepresenter
alias Pleroma.Web.OStatus.FeedRepresenter
alias Pleroma.Web.XML
plug(Pleroma.Web.FederatingPlug when action in [:salmon_incoming])
action_fallback(:errors)
def feed_redirect(conn, %{"nickname" => nickname}) do
case get_format(conn) do
"html" ->
with %User{} = user <- User.get_cached_by_nickname_or_id(nickname) do
Fallback.RedirectController.redirector_with_meta(conn, %{user: user})
else
nil -> {:error, :not_found}
end
"activity+json" ->
ActivityPubController.call(conn, :user)
"json" ->
ActivityPubController.call(conn, :user)
_ ->
with %User{} = user <- User.get_cached_by_nickname(nickname) do
redirect(conn, external: OStatus.feed_path(user))
else
nil -> {:error, :not_found}
end
end
end
def feed(conn, %{"nickname" => nickname} = params) do
with %User{} = user <- User.get_cached_by_nickname(nickname) do
query_params =
Map.take(params, ["max_id"])
|> Map.merge(%{"whole_db" => true, "actor_id" => user.ap_id})
activities =
ActivityPub.fetch_public_activities(query_params)
|> Enum.reverse()
response =
user
|> FeedRepresenter.to_simple_form(activities, [user])
|> :xmerl.export_simple(:xmerl_xml)
|> to_string
conn
|> put_resp_content_type("application/atom+xml")
|> send_resp(200, response)
else
nil -> {:error, :not_found}
end
end
defp decode_or_retry(body) do
with {:ok, magic_key} <- Pleroma.Web.Salmon.fetch_magic_key(body),
{:ok, doc} <- Pleroma.Web.Salmon.decode_and_validate(magic_key, body) do
{:ok, doc}
else
_e ->
with [decoded | _] <- Pleroma.Web.Salmon.decode(body),
doc <- XML.parse_document(decoded),
uri when not is_nil(uri) <- XML.string_from_xpath("/entry/author[1]/uri", doc),
{:ok, _} <- Pleroma.Web.OStatus.make_user(uri, true),
{:ok, magic_key} <- Pleroma.Web.Salmon.fetch_magic_key(body),
{:ok, doc} <- Pleroma.Web.Salmon.decode_and_validate(magic_key, body) do
{:ok, doc}
end
end
end
def salmon_incoming(conn, _) do
{:ok, body, _conn} = read_body(conn)
{:ok, doc} = decode_or_retry(body)
Federator.incoming_doc(doc)
conn
|> send_resp(200, "")
end
def object(conn, %{"uuid" => uuid}) do
if get_format(conn) in ["activity+json", "json"] do
ActivityPubController.call(conn, :object)
else
with id <- o_status_url(conn, :object, uuid),
{_, %Activity{} = activity} <- {:activity, Activity.get_create_by_object_ap_id(id)},
{_, true} <- {:public?, Visibility.is_public?(activity)},
%User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
case get_format(conn) do
"html" -> redirect(conn, to: "/notice/#{activity.id}")
_ -> represent_activity(conn, nil, activity, user)
end
else
{:public?, false} ->
{:error, :not_found}
{:activity, nil} ->
{:error, :not_found}
e ->
e
end
end
end
def activity(conn, %{"uuid" => uuid}) do
if get_format(conn) in ["activity+json", "json"] do
ActivityPubController.call(conn, :activity)
else
with id <- o_status_url(conn, :activity, uuid),
{_, %Activity{} = activity} <- {:activity, Activity.normalize(id)},
{_, true} <- {:public?, Visibility.is_public?(activity)},
%User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
case format = get_format(conn) do
"html" -> redirect(conn, to: "/notice/#{activity.id}")
_ -> represent_activity(conn, format, activity, user)
end
else
{:public?, false} ->
{:error, :not_found}
{:activity, nil} ->
{:error, :not_found}
e ->
e
end
end
end
def notice(conn, %{"id" => id}) do
with {_, %Activity{} = activity} <- {:activity, Activity.get_by_id(id)},
{_, true} <- {:public?, Visibility.is_public?(activity)},
%User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
case format = get_format(conn) do
"html" ->
if activity.data["type"] == "Create" do
%Object{} = object = Object.normalize(activity.data["object"])
Fallback.RedirectController.redirector_with_meta(conn, %{
activity_id: activity.id,
object: object,
url:
Pleroma.Web.Router.Helpers.o_status_url(
Pleroma.Web.Endpoint,
:notice,
activity.id
),
user: user
})
else
Fallback.RedirectController.redirector(conn, nil)
end
_ ->
represent_activity(conn, format, activity, user)
end
else
{:public?, false} ->
conn
|> put_status(404)
|> Fallback.RedirectController.redirector(nil, 404)
{:activity, nil} ->
conn
|> Fallback.RedirectController.redirector(nil, 404)
e ->
e
end
end
# Returns an HTML embedded <audio> or <video> player suitable for embed iframes.
def notice_player(conn, %{"id" => id}) do
with %Activity{data: %{"type" => "Create"}} = activity <- Activity.get_by_id(id),
true <- Visibility.is_public?(activity),
%Object{} = object <- Object.normalize(activity.data["object"]),
%{data: %{"attachment" => [%{"url" => [url | _]} | _]}} <- object,
true <- String.starts_with?(url["mediaType"], ["audio", "video"]) do
conn
|> put_layout(:metadata_player)
|> put_resp_header("x-frame-options", "ALLOW")
|> put_resp_header(
"content-security-policy",
"default-src 'none';style-src 'self' 'unsafe-inline';img-src 'self' data: https:; media-src 'self' https:;"
)
|> put_view(Pleroma.Web.Metadata.PlayerView)
|> render("player.html", url)
else
_error ->
conn
|> put_status(404)
|> Fallback.RedirectController.redirector(nil, 404)
end
end
defp represent_activity(
conn,
"activity+json",
%Activity{data: %{"type" => "Create"}} = activity,
_user
) do
object = Object.normalize(activity.data["object"])
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(ObjectView.render("object.json", %{object: object}))
end
defp represent_activity(_conn, "activity+json", _, _) do
{:error, :not_found}
end
defp represent_activity(conn, _, activity, user) do
response =
activity
|> ActivityRepresenter.to_simple_form(user, true)
|> ActivityRepresenter.wrap_with_entry()
|> :xmerl.export_simple(:xmerl_xml)
|> to_string
conn
|> put_resp_content_type("application/atom+xml")
|> send_resp(200, response)
end
def errors(conn, {:error, :not_found}) do
conn
|> put_status(404)
|> text("Not found")
end
def errors(conn, _) do
conn
|> put_status(500)
|> text("Something went wrong")
end
end