Move hardcoded default configuration into config.exs

config/config.exs

@@ -677,7 +677,18 @@
 
 config :pleroma, Pleroma.Workers.PurgeExpiredActivity, enabled: true, min_lifetime: 600
 
-config :pleroma, Pleroma.Plugs.RemoteIp, enabled: true
+config :pleroma, Pleroma.Plugs.RemoteIp,
+  enabled: true,
+  headers: ["x-forwarded-for"],
+  proxies: [],
+  reserved: [
+    "127.0.0.0/8",
+    "::1/128",
+    "fc00::/7",
+    "10.0.0.0/8",
+    "172.16.0.0/12",
+    "192.168.0.0/16"
+  ]
 
 config :pleroma, :static_fe, enabled: false
 

lib/pleroma/plugs/remote_ip.ex

@@ -7,45 +7,28 @@ defmodule Pleroma.Plugs.RemoteIp do
   This is a shim to call [`RemoteIp`](https://git.pleroma.social/pleroma/remote_ip) but with runtime configuration.
   """
 
+  alias Pleroma.Config
   import Plug.Conn
 
   @behaviour Plug
 
-  @headers ~w[
-    x-forwarded-for
-  ]
-
-  # https://en.wikipedia.org/wiki/Localhost
-  # https://en.wikipedia.org/wiki/Private_network
-  @reserved ~w[
-    127.0.0.0/8
-    ::1/128
-    fc00::/7
-    10.0.0.0/8
-    172.16.0.0/12
-    192.168.0.0/16
-  ]
-
   def init(_), do: nil
 
   def call(%{remote_ip: original_remote_ip} = conn, _) do
-    config = Pleroma.Config.get(__MODULE__, [])
-
-    if Keyword.get(config, :enabled, false) do
-      %{remote_ip: new_remote_ip} = conn = RemoteIp.call(conn, remote_ip_opts(config))
+    if Config.get([__MODULE__, :enabled]) do
+      %{remote_ip: new_remote_ip} = conn = RemoteIp.call(conn, remote_ip_opts())
       assign(conn, :remote_ip_found, original_remote_ip != new_remote_ip)
     else
       conn
     end
   end
 
-  defp remote_ip_opts(config) do
-    headers = config |> Keyword.get(:headers, @headers) |> MapSet.new()
-    reserved = Keyword.get(config, :reserved, @reserved)
+  defp remote_ip_opts() do
+    headers = Config.get([__MODULE__, :headers], []) |> MapSet.new()
+    reserved = Config.get([__MODULE__, :reserved], [])
 
     proxies =
-      config
-      |> Keyword.get(:proxies, [])
+      Config.get([__MODULE__, :proxies], [])
       |> Enum.concat(reserved)
       |> Enum.map(&maybe_add_cidr/1)
 

test/plugs/remote_ip_test.exs

@@ -3,13 +3,27 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Plugs.RemoteIpTest do
-  use ExUnit.Case, async: true
+  use ExUnit.Case
   use Plug.Test
 
   alias Pleroma.Plugs.RemoteIp
 
-  import Pleroma.Tests.Helpers, only: [clear_config: 1, clear_config: 2]
-  setup do: clear_config(RemoteIp)
+  import Pleroma.Tests.Helpers, only: [clear_config: 2]
+
+  setup do:
+          clear_config(RemoteIp,
+            enabled: true,
+            headers: ["x-forwarded-for"],
+            proxies: [],
+            reserved: [
+              "127.0.0.0/8",
+              "::1/128",
+              "fc00::/7",
+              "10.0.0.0/8",
+              "172.16.0.0/12",
+              "192.168.0.0/16"
+            ]
+          )
 
   test "disabled" do
     Pleroma.Config.put(RemoteIp, enabled: false)
@@ -25,8 +39,6 @@ test "disabled" do
   end
 
   test "enabled" do
-    Pleroma.Config.put(RemoteIp, enabled: true)
-
     conn =
       conn(:get, "/")
       |> put_req_header("x-forwarded-for", "1.1.1.1")
@@ -54,8 +66,6 @@ test "custom headers" do
   end
 
   test "custom proxies" do
-    Pleroma.Config.put(RemoteIp, enabled: true)
-
     conn =
       conn(:get, "/")
       |> put_req_header("x-forwarded-for", "173.245.48.1, 1.1.1.1, 173.245.48.2")