Add exclusion reasons, mix task to check enabled keys

config/description.exs

@@ -423,6 +423,7 @@ config :pleroma, :config_description, [
     label: "URI Schemes",
     type: :group,
     description: "URI schemes related settings",
+    db_exclusion_reasons: "Does not make sense to configure dynamically",
     children: [
       %{
         key: :valid_schemes,
@@ -1638,6 +1639,7 @@ config :pleroma, :config_description, [
     key: Pleroma.Web.MediaProxy.Invalidation.Script,
     type: :group,
     description: "Invalidation script settings",
+    db_exclusion_reason: "Provides an arbitrary execution path",
     children: [
       %{
         key: :script_path,
@@ -1751,6 +1753,7 @@ config :pleroma, :config_description, [
   %{
     group: :web_push_encryption,
     key: :vapid_details,
+    db_exclusion_reason: "Webserver secret keys",
     label: "Vapid Details",
     type: :group,
     description:
@@ -1822,19 +1825,13 @@ config :pleroma, :config_description, [
   %{
     group: :pleroma,
     label: "Pleroma Admin Token",
-    type: :group,
     description:
       "Allows setting a token that can be used to authenticate requests with admin privileges without a normal user account token. Append the `admin_token` parameter to requests to utilize it. (Please reconsider using HTTP Basic Auth or OAuth-based authentication if possible)",
-    children: [
-      %{
-        key: :admin_token,
     type: :string,
-        description: "Admin token",
     suggestions: [
       "Please use a high entropy string or UUID"
-        ]
+    ],
-      }
+    db_exclusion_reason: "Can provide passwordless admin access"
-    ]
   },
   %{
     group: :pleroma,
@@ -2178,6 +2175,7 @@ config :pleroma, :config_description, [
     label: "Pleroma Authenticator",
     type: :group,
     description: "Authenticator",
+    db_exclusion_reason: "Should be provided at boot-time",
     children: [
       %{
         key: Pleroma.Web.Auth.Authenticator,
@@ -2191,6 +2189,7 @@ config :pleroma, :config_description, [
     key: :ldap,
     label: "LDAP",
     type: :group,
+    db_exclusion_reason: "Provides access to another service",
     description:
       "Use LDAP for user authentication. When a user logs in to the Pleroma instance, the name and password" <>
         " will be verified by trying to authenticate (bind) to a LDAP server." <>
@@ -2590,6 +2589,7 @@ config :pleroma, :config_description, [
     label: "Mime Types",
     type: :group,
     description: "Mime Types settings",
+    db_exclusion_reason: "Should be provided at compile-time",
     children: [
       %{
         key: :types,
@@ -2796,6 +2796,7 @@ config :pleroma, :config_description, [
     group: :cors_plug,
     label: "CORS plug config",
     type: :group,
+    db_exclusion_reason: "Should be provided at compile-time",
     children: [
       %{
         key: :max_age,
@@ -2953,6 +2954,7 @@ config :pleroma, :config_description, [
     key: :modules,
     type: :group,
     description: "Custom Runtime Modules",
+    db_exclusion_reason: "Allows for custom elixir execution",
     children: [
       %{
         key: :runtime_dir,
@@ -3089,6 +3091,7 @@ config :pleroma, :config_description, [
     group: :ex_aws,
     key: :s3,
     type: :group,
+    db_exclusion_reason: "Provides access to another service",
     descriptions: "S3 service related settings",
     children: [
       %{
@@ -3468,6 +3471,7 @@ config :pleroma, :config_description, [
     key: :argos_translate,
     type: :group,
     description: "ArgosTranslate Settings.",
+    db_exclusion_reason: "Excluded for being able to set arbitrary paths to executables",
     children: [
       %{
         key: :command_argos_translate,

lib/mix/tasks/pleroma/config.ex

@@ -10,6 +10,7 @@ defmodule Mix.Tasks.Pleroma.Config do
 
   alias Pleroma.ConfigDB
   alias Pleroma.Repo
+  alias Pleroma.Config.ConfigurableFromDatabase
 
   @shortdoc "Manages the location of the config"
   @moduledoc File.read!("docs/docs/administration/CLI_tasks/config.md")
@@ -244,6 +245,28 @@ defmodule Mix.Tasks.Pleroma.Config do
     end
   end
 
+  # Primarily a developer tool to check nothing was missed from
+  # db configwhitelist
+  def run(["check-allowed"]) do
+    start_pleroma()
+    Pleroma.Docs.JSON.compile()
+    raw = Pleroma.Docs.JSON.compiled_descriptions()
+    whitelisted = Enum.filter(raw, &ConfigurableFromDatabase.whitelisted_config?/1)
+    raw_map = MapSet.new(raw)
+    whitelisted_map = MapSet.new(whitelisted)
+    IO.puts("Config keys defined in description.exs but not listed as explicitly allowed in the db")
+    IO.puts("  Please check that standard admins should not need to touch the listed settings whilst the server is live.")
+    IO.puts("  !! Please remember that admins are not neccesarily sysadmins nor are they immune to oauth/password leakage.")
+    IO.puts("-------------")
+
+    MapSet.difference(raw_map, whitelisted_map)
+    |> Enum.each(fn map ->
+      IO.puts("#{map[:group]}, #{map[:key]} (#{map[:label]})")
+      IO.puts(map[:db_exclusion_reason] || "No exclusion reason set")
+      IO.puts("++")
+    end)
+  end
+
   @spec migrate_to_db(Path.t() | nil) :: any()
   def migrate_to_db(file_path \\ nil) do
     with :ok <- Pleroma.Config.DeprecationWarnings.warn() do

lib/pleroma/config/configurable_from_database.ex

@@ -1,4 +1,6 @@
 defmodule Pleroma.Config.ConfigurableFromDatabase do
+  alias Pleroma.Config
+
   # Basically it's silly to let this be configurable
   # set a list of things that we can set in the database
   # this is mostly our stuff, with some extra in there
@@ -9,6 +11,7 @@ defmodule Pleroma.Config.ConfigurableFromDatabase do
     {:pleroma, Pleroma.Upload},
     {:pleroma, Pleroma.Uploaders.Local},
     {:pleroma, Pleroma.Uploaders.S3},
+    {:pleroma, :auth},
     {:pleroma, :emoji},
     {:pleroma, :http},
     {:pleroma, :instance},
@@ -70,9 +73,34 @@ defmodule Pleroma.Config.ConfigurableFromDatabase do
     {:pleroma, Pleroma.Search.Elasticsearch.Cluster},
     {:pleroma, :translator},
     {:pleroma, :deepl},
-    {:pleroma, :libre_translate}
+    {:pleroma, :libre_translate},
     # But not argostranslate, because executables!
+    {:pleroma, Pleroma.Upload.Filter.AnonymizeFilename},
+    {:pleroma, Pleroma.Upload.Filter.Mogrify},
+    {:pleroma, Pleroma.Workers.PurgeExpiredActivity},
+    {:pleroma, :rate_limit}
   ]
 
   def allowed_groups, do: @allowed_groups
+
+  def enabled, do: Config.get(:configurable_from_database)
+
+  def whitelisted_config?(group, key) do
+    allowed_groups()
+    |> Enum.any?(fn
+      {whitelisted_group} ->
+        group == inspect(whitelisted_group)
+
+      {whitelisted_group, whitelisted_key} ->
+        group == inspect(whitelisted_group) && key == inspect(whitelisted_key)
+    end)
+  end
+
+  def whitelisted_config?(%{group: group, key: key}) do
+    whitelisted_config?(group, key)
+  end
+
+  def whitelisted_config?(%{group: group} = config) do
+    whitelisted_config?(group, config[:key])
+  end
 end

lib/pleroma/web/admin_api/controllers/config_controller.ex

@@ -8,6 +8,7 @@ defmodule Pleroma.Web.AdminAPI.ConfigController do
   alias Pleroma.Config
   alias Pleroma.ConfigDB
   alias Pleroma.Web.Plugs.OAuthScopesPlug
+  alias Pleroma.Config.ConfigurableFromDatabase
 
   plug(Pleroma.Web.ApiSpec.CastAndValidate)
   plug(OAuthScopesPlug, %{scopes: ["admin:write"]} when action == :update)
@@ -71,7 +72,11 @@ defmodule Pleroma.Web.AdminAPI.ConfigController do
   end
 
   def descriptions(conn, _params) do
-    descriptions = Enum.filter(Pleroma.Docs.JSON.compiled_descriptions(), &whitelisted_config?/1)
+    descriptions =
+      Enum.filter(
+        Pleroma.Docs.JSON.compiled_descriptions(),
+        &ConfigurableFromDatabase.whitelisted_config?/1
+      )
 
     json(conn, translate_descriptions(descriptions))
   end
@@ -132,7 +137,7 @@ defmodule Pleroma.Web.AdminAPI.ConfigController do
     with :ok <- configurable_from_database() do
       results =
         configs
-        |> Enum.filter(&whitelisted_config?/1)
+        |> Enum.filter(&ConfigurableFromDatabase.whitelisted_config?/1)
         |> Enum.map(fn
           %{group: group, key: key, delete: true} = params ->
             ConfigDB.delete(%{group: group, key: key, subkeys: params[:subkeys]})
@@ -167,29 +172,10 @@ defmodule Pleroma.Web.AdminAPI.ConfigController do
   end
 
   defp configurable_from_database do
-    if Config.get(:configurable_from_database) do
+    if ConfigurableFromDatabase.enabled() do
       :ok
     else
       {:error, "You must enable configurable_from_database in your config file."}
     end
   end
-
-  defp whitelisted_config?(group, key) do
-    Pleroma.Config.ConfigurableFromDatabase.allowed_groups()
-    |> Enum.any?(fn
-      {whitelisted_group} ->
-        group == inspect(whitelisted_group)
-
-      {whitelisted_group, whitelisted_key} ->
-        group == inspect(whitelisted_group) && key == inspect(whitelisted_key)
-    end)
-  end
-
-  defp whitelisted_config?(%{group: group, key: key}) do
-    whitelisted_config?(group, key)
-  end
-
-  defp whitelisted_config?(%{group: group} = config) do
-    whitelisted_config?(group, config[:key])
-  end
 end