error message

fence/blueprints/login/base.py

@@ -4,7 +4,7 @@
 from fence.auth import login_user
 from fence.blueprints.login.redirect import validate_redirect
 from fence.config import config
-from fence.errors import UserError
+from fence.errors import UserError, MovedTemporarily
 
 
 class DefaultOAuth2Login(Resource):
@@ -69,6 +69,13 @@ def __init__(self, idp_name, client, username_field="email"):
         self.username_field = username_field
 
     def get(self):
+        error = flask.request.args.get("error")
+        full_path = flask.request.full_path
+        if error:
+            err_msg = flask.request.args.get("error_description")
+            err = {"error": error, "error_description": err_msg}
+            raise MovedTemporarily(flask.jsonify(err))
+
         code = flask.request.args.get("code")
         result = self.client.get_user_id(code)
         username = result.get(self.username_field)

fence/errors.py

@@ -60,3 +60,9 @@ class UnavailableError(APIError):
     def __init__(self, message):
         self.message = str(message)
         self.code = 503
+
+
+class MovedTemporarily(APIError):
+    def __init__(self, message):
+        self.message = str(message)
+        self.code = 302