forked from potsda.mn/mobilizon
111 lines
2.7 KiB
Elixir
111 lines
2.7 KiB
Elixir
# Portions of this file are derived from Pleroma:
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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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# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/pleroma/plugs/uploaded_media.ex
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defmodule Mobilizon.Web.Plugs.UploadedMedia do
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@moduledoc """
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Serves uploaded media files
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"""
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@behaviour Plug
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import Plug.Conn
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alias Mobilizon.Config
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alias Mobilizon.Web.{ReverseProxy, Upload}
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require Logger
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# no slashes
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@path "media"
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@spec init(any()) :: map()
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def init(_opts) do
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static_plug_opts =
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[]
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|> Keyword.put(:from, "__unconfigured_media_plug")
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|> Keyword.put(:at, "/__unconfigured_media_plug")
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|> Plug.Static.init()
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%{static_plug_opts: static_plug_opts}
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end
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@spec call(Plug.Conn.t(), map()) :: Plug.Conn.t()
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def call(%{request_path: <<"/", @path, "/", file::binary>>} = conn, opts) do
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conn =
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case fetch_query_params(conn) do
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%{query_params: %{"name" => name}} = conn ->
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name = String.replace(name, "\"", "\\\"")
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put_resp_header(conn, "content-disposition", "filename=\"#{name}\"")
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conn ->
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conn
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end
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config = Config.get([Upload])
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uploader = Keyword.fetch!(config, :uploader)
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proxy_remote = Keyword.get(config, :proxy_remote, false)
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case uploader.get_file(file) do
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{:ok, get_method} ->
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get_media(conn, get_method, proxy_remote, opts)
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_ ->
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conn
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|> send_resp(500, "Failed")
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|> halt()
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end
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end
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def call(conn, _opts), do: conn
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@spec get_media(
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Plug.Conn.t(),
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{:static_dir, String.t()} | {:url, String.t()} | any(),
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boolean,
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any()
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) :: Plug.Conn.t()
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defp get_media(conn, {:static_dir, directory}, _, opts) do
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static_opts =
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opts
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|> Map.get(:static_plug_opts)
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|> Map.put(:at, [@path])
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|> Map.put(:from, directory)
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conn = Plug.Static.call(conn, static_opts)
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if conn.halted do
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conn
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else
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conn
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|> delete_resp_header("content-disposition")
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|> put_status(404)
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|> Phoenix.Controller.put_view(Mobilizon.Web.ErrorView)
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|> Phoenix.Controller.render("404.html")
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|> halt()
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end
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end
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defp get_media(conn, {:url, url}, true, _) do
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ReverseProxy.call(conn, url, Config.get([Mobilizon.Upload, :proxy_opts], []))
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end
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defp get_media(conn, {:url, url}, _, _) do
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conn
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|> Phoenix.Controller.redirect(external: url)
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|> halt()
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end
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defp get_media(conn, unknown, _, _) do
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Logger.error("#{__MODULE__}: Unknown get startegy: #{inspect(unknown)}")
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conn
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|> send_resp(500, "Internal Error")
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|> halt()
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end
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end
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