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mobilizon/lib/web/plugs/uploaded_media.ex

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2.3 KiB
Elixir

# Portions of this file are derived from Pleroma:
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/pleroma/plugs/uploaded_media.ex
defmodule Mobilizon.Web.Plugs.UploadedMedia do
@moduledoc """
Serves uploaded media files
"""
@behaviour Plug
import Plug.Conn
alias Mobilizon.Config
alias Mobilizon.Web.{ReverseProxy, Upload}
require Logger
# no slashes
@path "media"
def init(_opts) do
static_plug_opts =
[]
|> Keyword.put(:from, "__unconfigured_media_plug")
|> Keyword.put(:at, "/__unconfigured_media_plug")
|> Plug.Static.init()
%{static_plug_opts: static_plug_opts}
end
def call(%{request_path: <<"/", @path, "/", file::binary>>} = conn, opts) do
conn =
case fetch_query_params(conn) do
%{query_params: %{"name" => name}} = conn ->
name = String.replace(name, "\"", "\\\"")
put_resp_header(conn, "content-disposition", "filename=\"#{name}\"")
conn ->
conn
end
config = Config.get([Upload])
with uploader <- Keyword.fetch!(config, :uploader),
proxy_remote = Keyword.get(config, :proxy_remote, false),
{:ok, get_method} <- uploader.get_file(file) do
get_media(conn, get_method, proxy_remote, opts)
else
_ ->
conn
|> send_resp(500, "Failed")
|> halt()
end
end
def call(conn, _opts), do: conn
defp get_media(conn, {:static_dir, directory}, _, opts) do
static_opts =
opts
|> Map.get(:static_plug_opts)
|> Map.put(:at, [@path])
|> Map.put(:from, directory)
conn = Plug.Static.call(conn, static_opts)
if conn.halted do
conn
else
conn
|> send_resp(404, "Not found")
|> halt()
end
end
defp get_media(conn, {:url, url}, true, _) do
ReverseProxy.call(conn, url, Config.get([Mobilizon.Upload, :proxy_opts], []))
end
defp get_media(conn, {:url, url}, _, _) do
conn
|> Phoenix.Controller.redirect(external: url)
|> halt()
end
defp get_media(conn, unknown, _, _) do
Logger.error("#{__MODULE__}: Unknown get startegy: #{inspect(unknown)}")
conn
|> send_resp(500, "Internal Error")
|> halt()
end
end