sources/saml: set username field to name_id attribute

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

authentik/sources/saml/processors/response.py

@@ -216,6 +216,7 @@ class ResponseProcessor:
         # Flatten all lists in the dict
         for key, value in attributes.items():
             attributes[key] = BaseEvaluator.expr_flatten(value)
+        attributes["username"] = self._get_name_id().text
         return attributes
 
     def prepare_flow_manager(self) -> SourceFlowManager:

authentik/sources/saml/tests/test_response.py

@@ -109,4 +109,7 @@ class TestResponseProcessor(TestCase):
         parser = ResponseProcessor(self.source, request)
         parser.parse()
         sfm = parser.prepare_flow_manager()
-        self.assertEqual(sfm.enroll_info, {"email": "foo@bar.baz", "name": "foo", "sn": "bar"})
+        self.assertEqual(
+            sfm.enroll_info,
+            {"email": "foo@bar.baz", "name": "foo", "sn": "bar", "username": "jens@beryju.org"},
+        )