1 files changed, 30 insertions, 0 deletions
diff --git a/keystone/oauth2/handlers.py b/keystone/oauth2/handlers.py
new file mode 100644
index 000000000..e2c16c5cf
--- /dev/null
+++ b/keystone/oauth2/handlers.py
@@ -0,0 +1,30 @@
+# Copyright 2022 OpenStack Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import flask
+from keystone.server import flask as ks_flask
+
+
+def build_response(error):
+    response = flask.make_response((
+        {
+            'error': error.error_title,
+            'error_description': error.message_format
+        },
+        f"{error.code} {error.title}"))
+
+    if error.code == 401:
+        response.headers['WWW-Authenticate'] = \
+            'Keystone uri="%s"' % ks_flask.base_url()
+    return response