akkoma/lib/pleroma/web/activity_pub/activity_pub_controller.ex

230 lines
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.ActivityPub.ActivityPubController do
use Pleroma.Web, :controller
alias Pleroma.{Activity, User, Object}
alias Pleroma.Web.ActivityPub.{ObjectView, UserView}
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Relay
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.ActivityPub.Transmogrifier
alias Pleroma.Web.Federator
require Logger
action_fallback(:errors)
plug(Pleroma.Web.FederatingPlug when action in [:inbox, :relay])
plug(:relay_active? when action in [:relay])
def relay_active?(conn, _) do
if Keyword.get(Application.get_env(:pleroma, :instance), :allow_relay) do
conn
else
conn
|> put_status(404)
|> json(%{error: "not found"})
|> halt
end
end
def user(conn, %{"nickname" => nickname}) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("user.json", %{user: user}))
else
nil -> {:error, :not_found}
end
end
def object(conn, %{"uuid" => uuid}) do
with ap_id <- o_status_url(conn, :object, uuid),
%Object{} = object <- Object.get_cached_by_ap_id(ap_id),
{_, true} <- {:public?, ActivityPub.is_public?(object)} do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(ObjectView.render("object.json", %{object: object}))
else
{:public?, false} ->
{:error, :not_found}
end
end
def following(conn, %{"nickname" => nickname, "page" => page}) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
{page, _} = Integer.parse(page)
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("following.json", %{user: user, page: page}))
end
end
def following(conn, %{"nickname" => nickname}) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("following.json", %{user: user}))
end
end
def followers(conn, %{"nickname" => nickname, "page" => page}) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
{page, _} = Integer.parse(page)
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("followers.json", %{user: user, page: page}))
end
end
def followers(conn, %{"nickname" => nickname}) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("followers.json", %{user: user}))
end
end
def outbox(conn, %{"nickname" => nickname} = params) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("outbox.json", %{user: user, max_id: params["max_id"]}))
end
end
def inbox(%{assigns: %{valid_signature: true}} = conn, %{"nickname" => nickname} = params) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
true <- Utils.recipient_in_message(user.ap_id, params),
params <- Utils.maybe_splice_recipient(user.ap_id, params) do
Federator.enqueue(:incoming_ap_doc, params)
json(conn, "ok")
end
end
def inbox(%{assigns: %{valid_signature: true}} = conn, params) do
Federator.enqueue(:incoming_ap_doc, params)
json(conn, "ok")
end
# only accept relayed Creates
def inbox(conn, %{"type" => "Create"} = params) do
Logger.info(
"Signature missing or not from author, relayed Create message, fetching object from source"
)
ActivityPub.fetch_object_from_id(params["object"]["id"])
json(conn, "ok")
end
def inbox(conn, params) do
headers = Enum.into(conn.req_headers, %{})
if String.contains?(headers["signature"], params["actor"]) do
Logger.info(
"Signature validation error for: #{params["actor"]}, make sure you are forwarding the HTTP Host header!"
)
Logger.info(inspect(conn.req_headers))
end
json(conn, "error")
end
def relay(conn, _params) do
with %User{} = user <- Relay.get_actor(),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("user.json", %{user: user}))
else
nil -> {:error, :not_found}
end
end
def read_inbox(%{assigns: %{user: user}} = conn, %{"nickname" => nickname} = params) do
if nickname == user.nickname do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("inbox.json", %{user: user, max_id: params["max_id"]}))
else
conn
|> put_status(:forbidden)
|> json("can't read inbox of #{nickname} as #{user.nickname}")
end
end
def handle_user_activity(user, %{"type" => "Create"} = params) do
object =
params["object"]
|> Map.merge(Map.take(params, ["to", "cc"]))
|> Map.put("attributedTo", user.ap_id())
|> Transmogrifier.fix_object()
ActivityPub.create(%{
to: params["to"],
actor: user,
context: object["context"],
object: object,
additional: Map.take(params, ["cc"])
})
end
def handle_user_activity(_, _) do
{:error, "Unhandled activity type"}
end
def update_outbox(
%{assigns: %{user: user}} = conn,
%{"nickname" => nickname} = params
) do
if nickname == user.nickname do
actor = user.ap_id()
params =
params
|> Map.drop(["id"])
|> Map.put("actor", actor)
|> Transmogrifier.fix_addressing()
with {:ok, %Activity{} = activity} <- handle_user_activity(user, params) do
conn
|> put_status(:created)
|> put_resp_header("location", activity.data["id"])
|> json(activity.data)
else
{:error, message} ->
conn
|> put_status(:bad_request)
|> json(message)
end
else
conn
|> put_status(:forbidden)
|> json("can't update outbox of #{nickname} as #{user.nickname}")
end
end
def errors(conn, {:error, :not_found}) do
conn
|> put_status(404)
|> json("Not found")
end
def errors(conn, _e) do
conn
|> put_status(500)
|> json("error")
end
end