| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 LIB_RPC_SASLPROTOCOL_H |
| #define LIB_RPC_SASLPROTOCOL_H |
| |
| #include "RpcHeader.pb.h" |
| |
| #include <memory> |
| #include <mutex> |
| #include <functional> |
| |
| #include "hdfspp/status.h" |
| #include "common/auth_info.h" |
| #include "common/libhdfs_events_impl.h" |
| |
| namespace hdfs { |
| |
| static constexpr const char * SASL_METHOD_NAME = "sasl message"; |
| |
| class RpcConnection; |
| class SaslEngine; |
| class SaslMethod; |
| |
| class SaslProtocol : public std::enable_shared_from_this<SaslProtocol> |
| { |
| public: |
| SaslProtocol(const std::string &cluster_name, |
| const AuthInfo & auth_info, |
| std::shared_ptr<RpcConnection> connection); |
| virtual ~SaslProtocol(); |
| |
| void SetEventHandlers(std::shared_ptr<LibhdfsEvents> event_handlers); |
| |
| // Start the async authentication process. Must be called while holding the |
| // connection lock, but all callbacks will occur outside of the connection lock |
| void Authenticate(std::function<void(const Status & status, const AuthInfo new_auth_info)> callback); |
| void OnServerResponse(const Status & status, const hadoop::common::RpcSaslProto * response); |
| std::pair<Status, hadoop::common::RpcSaslProto> BuildInitMessage( std::string & token, const hadoop::common::RpcSaslProto * negotiate_msg); |
| private: |
| enum State { |
| kUnstarted, |
| kNegotiate, |
| kComplete |
| }; |
| |
| // Lock for access to members of the class |
| std::mutex sasl_state_lock_; |
| |
| State state_; |
| const std::string cluster_name_; |
| AuthInfo auth_info_; |
| std::weak_ptr<RpcConnection> connection_; |
| std::function<void(const Status & status, const AuthInfo new_auth_info)> callback_; |
| std::unique_ptr<SaslEngine> sasl_engine_; |
| std::shared_ptr<LibhdfsEvents> event_handlers_; |
| |
| bool SendSaslMessage(hadoop::common::RpcSaslProto & message); |
| bool AuthComplete(const Status & status, const AuthInfo & auth_info); |
| |
| void ResetEngine(); |
| void Negotiate(const hadoop::common::RpcSaslProto * response); |
| void Challenge(const hadoop::common::RpcSaslProto * response); |
| |
| }; // class SaslProtocol |
| |
| } // namespace hdfs |
| |
| #endif /* LIB_RPC_SASLPROTOCOL_H */ |