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""" def _dict_merge(merge_dict, into_dict): """Do a deep merge of two dicts Recursively merges `merge_dict` into `into_dict`: * For keys where both `merge_dict` and `into_dict` have a dict value, the values are recursively merged * For all other keys, the values in `into_dict` (if any) are overwritten with the value from `merge_dict`. Args: merge_dict (dict): dict to merge into_dict (dict): target dict """ for k, v in merge_dict.items(): if k not in into_dict: into_dict[k] = v continue current_val = into_dict[k] if isinstance(v, dict) and isinstance(current_val, dict): _dict_merge(v, current_val) continue # otherwise we just overwrite into_dict[k] = v class SAML2Config(Config): section = "saml2" def read_config(self, config, **kwargs): self.saml2_enabled = False saml2_config = config.get("saml2_config") if not saml2_config or not saml2_config.get("enabled", True): return if not saml2_config.get("sp_config") and not saml2_config.get("config_path"): return try: check_requirements("saml2") except DependencyException as e: raise ConfigError(e.message) self.saml2_enabled = True self.saml2_grandfathered_mxid_source_attribute = saml2_config.get( "grandfathered_mxid_source_attribute", "uid" ) # user_mapping_provider may be None if the key is present but has no value ump_dict = saml2_config.get("user_mapping_provider") or {} # Use the default user mapping provider if not set ump_dict.setdefault("module", DEFAULT_USER_MAPPING_PROVIDER) # Ensure a config is present ump_dict["config"] = ump_dict.get("config") or {} if ump_dict["module"] == DEFAULT_USER_MAPPING_PROVIDER: # Load deprecated options for use by the default module old_mxid_source_attribute = saml2_config.get("mxid_source_attribute") if old_mxid_source_attribute: logger.warning( "The config option saml2_config.mxid_source_attribute is deprecated. " "Please use saml2_config.user_mapping_provider.config" ".mxid_source_attribute instead." ) ump_dict["config"]["mxid_source_attribute"] = old_mxid_source_attribute old_mxid_mapping = saml2_config.get("mxid_mapping") if old_mxid_mapping: logger.warning( "The config option saml2_config.mxid_mapping is deprecated. Please " "use saml2_config.user_mapping_provider.config.mxid_mapping instead." ) ump_dict["config"]["mxid_mapping"] = old_mxid_mapping # Retrieve an instance of the module's class # Pass the config dictionary to the module for processing ( self.saml2_user_mapping_provider_class, self.saml2_user_mapping_provider_config, ) = load_module(ump_dict) # Ensure loaded user mapping module has defined all necessary methods # Note parse_config() is already checked during the call to load_module required_methods = [ "get_saml_attributes", "saml_response_to_user_attributes", "get_remote_user_id", ] missing_methods = [ method for method in required_methods if not hasattr(self.saml2_user_mapping_provider_class, method) ] if missing_methods: raise ConfigError( "Class specified by saml2_config." "user_mapping_provider.module is missing required " "methods: %s" % (", ".join(missing_methods),) ) # Get the desired saml auth response attributes from the module saml2_config_dict = self._default_saml_config_dict( *self.saml2_user_mapping_provider_class.get_saml_attributes( self.saml2_user_mapping_provider_config ) ) _dict_merge( merge_dict=saml2_config.get("sp_config", {}), into_dict=saml2_config_dict ) config_path = saml2_config.get("config_path", None) if config_path is not None: mod = load_python_module(config_path) _dict_merge(merge_dict=mod.CONFIG, into_dict=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( saml2_config.get("saml_session_lifetime", "5m") ) if "error_html_path" in config: self.saml2_error_html_content = self.read_file( config["error_html_path"], "saml2_config.error_html_path", ) else: self.saml2_error_html_content = SAML2_ERROR_DEFAULT_HTML def _default_saml_config_dict( self, required_attributes: set, optional_attributes: set ): """Generate a configuration dictionary with required and optional attributes that will be needed to process new user registration Args: required_attributes: SAML auth response attributes that are necessary to function optional_attributes: SAML auth response attributes that can be used to add additional information to Synapse user accounts, but are not required Returns: dict: A SAML configuration dictionary """ import saml2 public_baseurl = self.public_baseurl if public_baseurl is None: raise ConfigError("saml2_config requires a public_baseurl to be set") if self.saml2_grandfathered_mxid_source_attribute: optional_attributes.add(self.saml2_grandfathered_mxid_source_attribute) optional_attributes -= required_attributes metadata_url = public_baseurl + "_matrix/saml2/metadata.xml" response_url = public_baseurl + "_matrix/saml2/authn_response" return { "entityid": metadata_url, "service": { "sp": { "endpoints": { "assertion_consumer_service": [ (response_url, saml2.BINDING_HTTP_POST) ] }, "required_attributes": list(required_attributes), "optional_attributes": list(optional_attributes), # "name_id_format": saml2.saml.NAMEID_FORMAT_PERSISTENT, } }, } def generate_config_section(self, config_dir_path, server_name, **kwargs): return """\ # Enable SAML2 for registration and login. Uses pysaml2. # # At least one of `sp_config` or `config_path` must be set in this section to # enable SAML login. # # (You will probably also want to set the following options to `false` to # disable the regular login/registration flows: # * enable_registration # * password_config.enabled # # Once SAML support is enabled, a metadata file will be exposed at # https://