Merge branch 'develop' of https://git.pleroma.social/pleroma/pleroma into develop

[akkoma] / lib / pleroma / plugs / oauth_scopes_plug.ex

diff --git a/lib/pleroma/plugs/oauth_scopes_plug.ex b/lib/pleroma/plugs/oauth_scopes_plug.ex
index f2bfa2b1a7c9e3699fb6c97d841783ffce5b0d81..07c0f7fdb16df5d2a55e9b7ad179ebf7e09c16e9 100644 (file)
--- a/lib/pleroma/plugs/oauth_scopes_plug.ex
+++ b/lib/pleroma/plugs/oauth_scopes_plug.ex
@@ -4,6 +4,10 @@
 
 defmodule Pleroma.Plugs.OAuthScopesPlug do
   import Plug.Conn
+  import Pleroma.Web.Gettext
+
+  alias Pleroma.Config
+  alias Pleroma.Plugs.EnsurePublicOrAuthenticatedPlug
 
   @behaviour Plug
 
@@ -13,29 +17,63 @@ defmodule Pleroma.Plugs.OAuthScopesPlug do
     op = options[:op] || :|
     token = assigns[:token]
 
-    cond do
-      is_nil(token) ->
-        conn
+    scopes = transform_scopes(scopes, options)
+    matched_scopes = (token && filter_descendants(scopes, token.scopes)) || []
 
-      op == :| && scopes -- token.scopes != scopes ->
+    cond do
+      token && op == :| && Enum.any?(matched_scopes) ->
         conn
 
-      op == :& && scopes -- token.scopes == [] ->
+      token && op == :& && matched_scopes == scopes ->
         conn
 
       options[:fallback] == :proceed_unauthenticated ->
         conn
         |> assign(:user, nil)
         |> assign(:token, nil)
+        |> maybe_perform_instance_privacy_check(options)
 
       true ->
-        missing_scopes = scopes -- token.scopes
-        error_message = "Insufficient permissions: #{Enum.join(missing_scopes, " #{op} ")}."
+        missing_scopes = scopes -- matched_scopes
+        permissions = Enum.join(missing_scopes, " #{op} ")
+
+        error_message =
+          dgettext("errors", "Insufficient permissions: %{permissions}.", permissions: permissions)
 
         conn
         |> put_resp_content_type("application/json")
-        |> send_resp(403, Jason.encode!(%{error: error_message}))
+        |> send_resp(:forbidden, Jason.encode!(%{error: error_message}))
         |> halt()
     end
   end
+
+  @doc "Filters descendants of supported scopes"
+  def filter_descendants(scopes, supported_scopes) do
+    Enum.filter(
+      scopes,
+      fn scope ->
+        Enum.find(
+          supported_scopes,
+          &(scope == &1 || String.starts_with?(scope, &1 <> ":"))
+        )
+      end
+    )
+  end
+
+  @doc "Transforms scopes by applying supported options (e.g. :admin)"
+  def transform_scopes(scopes, options) do
+    if options[:admin] do
+      Config.oauth_admin_scopes(scopes)
+    else
+      scopes
+    end
+  end
+
+  defp maybe_perform_instance_privacy_check(%Plug.Conn{} = conn, options) do
+    if options[:skip_instance_privacy_check] do
+      conn
+    else
+      EnsurePublicOrAuthenticatedPlug.call(conn, [])
+    end
+  end
 end