akkoma/lib/pleroma/object/fetcher.ex

76 lines
2.1 KiB
Elixir
Raw Normal View History

defmodule Pleroma.Object.Fetcher do
alias Pleroma.Object
alias Pleroma.Object.Containment
alias Pleroma.Web.ActivityPub.Transmogrifier
alias Pleroma.Web.OStatus
require Logger
@httpoison Application.get_env(:pleroma, :httpoison)
# TODO:
# This will create a Create activity, which we need internally at the moment.
def fetch_object_from_id(id) do
if object = Object.get_cached_by_ap_id(id) do
{:ok, object}
else
Logger.info("Fetching #{id} via AP")
with {:ok, data} <- fetch_and_contain_remote_object_from_id(id),
nil <- Object.normalize(data, false),
params <- %{
"type" => "Create",
"to" => data["to"],
"cc" => data["cc"],
"actor" => data["actor"] || data["attributedTo"],
"object" => data
},
:ok <- Containment.contain_origin(id, params),
{:ok, activity} <- Transmogrifier.handle_incoming(params) do
{:ok, Object.normalize(activity, false)}
else
{:error, {:reject, nil}} ->
{:reject, nil}
object = %Object{} ->
{:ok, object}
_e ->
Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
case OStatus.fetch_activity_from_url(id) do
{:ok, [activity | _]} -> {:ok, Object.normalize(activity, false)}
e -> e
end
end
end
end
def fetch_object_from_id!(id) do
with {:ok, object} <- fetch_object_from_id(id) do
object
else
_e ->
nil
end
end
def fetch_and_contain_remote_object_from_id(id) do
Logger.info("Fetching object #{id} via AP")
with true <- String.starts_with?(id, "http"),
{:ok, %{body: body, status: code}} when code in 200..299 <-
@httpoison.get(
id,
[{:Accept, "application/activity+json"}]
),
{:ok, data} <- Jason.decode(body),
:ok <- Containment.contain_origin_from_id(id, data) do
{:ok, data}
else
e ->
{:error, e}
end
end
end