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-rw-r--r--synapse/config/saml2_config.py34
1 files changed, 28 insertions, 6 deletions
diff --git a/synapse/config/saml2_config.py b/synapse/config/saml2_config.py
index 6a8161547a..14539fdb2a 100644
--- a/synapse/config/saml2_config.py
+++ b/synapse/config/saml2_config.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -12,11 +13,29 @@
 # 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.
+
 from synapse.python_dependencies import DependencyException, check_requirements
+from synapse.util.module_loader import load_python_module
 
 from ._base import Config, ConfigError
 
 
+def _dict_merge(merge_dict, into_dct):
+    for k, v in merge_dict.items():
+        if k not in into_dct:
+            into_dct[k] = v
+            continue
+
+        current_val = into_dct[k]
+
+        if isinstance(v, dict) and isinstance(current_val, dict):
+            _dict_merge(v, current_val)
+            continue
+
+        # otherwise we just overwrite
+        into_dct[k] = v
+
+
 class SAML2Config(Config):
     def read_config(self, config, **kwargs):
         self.saml2_enabled = False
@@ -33,15 +52,18 @@ class SAML2Config(Config):
 
         self.saml2_enabled = True
 
-        import saml2.config
-
-        self.saml2_sp_config = saml2.config.SPConfig()
-        self.saml2_sp_config.load(self._default_saml_config_dict())
-        self.saml2_sp_config.load(saml2_config.get("sp_config", {}))
+        saml2_config_dict = self._default_saml_config_dict()
+        _dict_merge(saml2_config.get("sp_config", {}), saml2_config_dict)
 
         config_path = saml2_config.get("config_path", None)
         if config_path is not None:
-            self.saml2_sp_config.load_file(config_path)
+            mod = load_python_module(config_path)
+            _dict_merge(mod.CONFIG, saml2_config_dict)
+
+        import saml2.config
+
+        self.saml2_sp_config = saml2.config.SPConfig()
+        self.saml2_sp_config.load(saml2_config_dict)
 
         # session lifetime: in milliseconds
         self.saml2_session_lifetime = self.parse_duration(