// // Copyright 2021 gRPC authors. // // 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. // #ifndef GRPC_SRC_CORE_EXT_FILTERS_RBAC_RBAC_SERVICE_CONFIG_PARSER_H #define GRPC_SRC_CORE_EXT_FILTERS_RBAC_RBAC_SERVICE_CONFIG_PARSER_H #include #include #include #include #include #include #include "absl/strings/string_view.h" #include "src/core/lib/channel/channel_args.h" #include "src/core/lib/config/core_configuration.h" #include "src/core/lib/security/authorization/grpc_authorization_engine.h" #include "src/core/lib/security/authorization/rbac_policy.h" #include "src/core/service_config/service_config_parser.h" #include "src/core/util/json/json.h" #include "src/core/util/validation_errors.h" namespace grpc_core { // Channel arg key for enabling parsing RBAC via method config. #define GRPC_ARG_PARSE_RBAC_METHOD_CONFIG \ "grpc.internal.parse_rbac_method_config" class RbacMethodParsedConfig : public ServiceConfigParser::ParsedConfig { public: explicit RbacMethodParsedConfig(std::vector rbac_policies) { for (auto& rbac_policy : rbac_policies) { authorization_engines_.emplace_back(std::move(rbac_policy)); } } // Returns the authorization engine for a rbac policy at a certain index. For // a connection on the server, multiple RBAC policies might be active. The // RBAC filter uses this method to get the RBAC policy configured for a // instance at a particular instance. const GrpcAuthorizationEngine* authorization_engine(size_t index) const { if (index >= authorization_engines_.size()) { return nullptr; } return &authorization_engines_[index]; } private: std::vector authorization_engines_; }; class RbacServiceConfigParser : public ServiceConfigParser::Parser { public: absl::string_view name() const override { return parser_name(); } // Parses the per-method service config for rbac filter. std::unique_ptr ParsePerMethodParams( const ChannelArgs& args, const Json& json, ValidationErrors* errors) override; // Returns the parser index for RbacServiceConfigParser. static size_t ParserIndex(); // Registers RbacServiceConfigParser to ServiceConfigParser. static void Register(CoreConfiguration::Builder* builder); private: static absl::string_view parser_name() { return "rbac"; } }; } // namespace grpc_core #endif // GRPC_SRC_CORE_EXT_FILTERS_RBAC_RBAC_SERVICE_CONFIG_PARSER_H