api: add Footer links to config API

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/api/v2/config.py

@@ -1,7 +1,7 @@
 """core Configs API"""
 from django.db.models import Model
 from drf_yasg2.utils import swagger_auto_schema
-from rest_framework.fields import BooleanField, CharField
+from rest_framework.fields import BooleanField, CharField, ListField
 from rest_framework.permissions import AllowAny
 from rest_framework.request import Request
 from rest_framework.response import Response
@@ -11,11 +11,25 @@ from rest_framework.viewsets import ViewSet
 from authentik.lib.config import CONFIG
 
 
+class LinkSerializer(Serializer):
+    """Links returned in Config API"""
+
+    href = CharField(read_only=True)
+    name = CharField(read_only=True)
+
+    def create(self, validated_data: dict) -> Model:
+        raise NotImplementedError
+
+    def update(self, instance: Model, validated_data: dict) -> Model:
+        raise NotImplementedError
+
+
 class ConfigSerializer(Serializer):
     """Serialize authentik Config into DRF Object"""
 
     branding_logo = CharField(read_only=True)
     branding_title = CharField(read_only=True)
+    ui_footer_links = ListField(child=LinkSerializer(), read_only=True)
 
     error_reporting_enabled = BooleanField(read_only=True)
     error_reporting_environment = CharField(read_only=True)
@@ -43,6 +57,7 @@ class ConfigsViewSet(ViewSet):
                 "error_reporting_enabled": CONFIG.y("error_reporting.enabled"),
                 "error_reporting_environment": CONFIG.y("error_reporting.environment"),
                 "error_reporting_send_pii": CONFIG.y("error_reporting.send_pii"),
+                "ui_footer_links": CONFIG.y("authentik.footer_links"),
             }
         )
         return Response(config.data)