akkoma/lib/pleroma/web/plugs/instance_static.ex

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.Plugs.InstanceStatic do
import Plug.Conn
require Pleroma.Constants
alias Pleroma.Web.Plugs.Utils
@moduledoc """
This is a shim to call `Plug.Static` but with runtime `from` configuration.
Mountpoints are defined directly in the module to avoid calling the configuration for every request including non-static ones.
"""
@behaviour Plug
def file_path(path, frontend_type \\ :primary) do
instance_path =
Path.join(Pleroma.Config.get([:instance, :static_dir], "instance/static/"), path)
frontend_path = Pleroma.Web.Plugs.FrontendStatic.file_path(path, frontend_type)
(File.exists?(instance_path) && instance_path) ||
(frontend_path && File.exists?(frontend_path) && frontend_path) ||
Path.join(Application.app_dir(:pleroma, "priv/static/"), path)
end
def init(opts) do
opts
|> Keyword.put(:from, "__unconfigured_instance_static_plug")
|> Plug.Static.init()
end
for only <- Pleroma.Constants.static_only_files() do
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def call(%{request_path: "/" <> unquote(only) <> _} = conn, opts) do
call_static(
conn,
opts,
Pleroma.Config.get([:instance, :static_dir], "instance/static")
)
end
end
def call(conn, _) do
conn
end
defp set_static_content_type(conn, "/emoji/" <> _ = request_path) do
real_mime = MIME.from_path(request_path)
safe_mime = Utils.get_safe_mime_type(%{allowed_mime_types: ["image"]}, real_mime)
put_resp_header(conn, "content-type", safe_mime)
end
defp set_static_content_type(conn, request_path) do
put_resp_header(conn, "content-type", MIME.from_path(request_path))
end
defp call_static(%{request_path: request_path} = conn, opts, from) do
opts =
opts
|> Map.put(:from, from)
|> Map.put(:set_content_type, false)
conn
|> set_static_content_type(request_path)
|> Pleroma.Web.Plugs.StaticNoCT.call(opts)
end
end