| /** |
| * |
| * 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 LIBMINIFI_INCLUDE_C2_RESTRCVR_H_ |
| #define LIBMINIFI_INCLUDE_C2_RESTRCVR_H_ |
| |
| #include <string> |
| #include <mutex> |
| #include "core/Resource.h" |
| #include "c2/protocols/RESTProtocol.h" |
| #include "CivetServer.h" |
| #include "c2/C2Protocol.h" |
| #include "controllers/SSLContextService.h" |
| |
| namespace org { |
| namespace apache { |
| namespace nifi { |
| namespace minifi { |
| namespace c2 { |
| |
| int log_message(const struct mg_connection *conn, const char *message); |
| |
| int ssl_protocol_en(void *ssl_context, void *user_data); |
| |
| /** |
| * Purpose and Justification: Encapsulates the restful protocol that is built upon C2Protocol. |
| * |
| * The external interfaces rely solely on send, where send includes a Direction. Transmit will perform a POST |
| * and RECEIVE will perform a GET. This does not mean we can't receive on a POST; however, since Direction |
| * will encompass other protocols the context of its meaning here simply translates into POST and GET respectively. |
| * |
| */ |
| class RESTReceiver : public RESTProtocol, public HeartBeatReporter { |
| public: |
| RESTReceiver(std::string name, utils::Identifier uuid = utils::Identifier()); |
| |
| virtual void initialize(const std::shared_ptr<core::controller::ControllerServiceProvider> &controller, const std::shared_ptr<state::StateMonitor> &updateSink, |
| const std::shared_ptr<Configure> &configure) override; |
| virtual int16_t heartbeat(const C2Payload &heartbeat) override; |
| |
| protected: |
| |
| class ListeningProtocol : public CivetHandler { |
| |
| public: |
| ListeningProtocol() { |
| |
| } |
| |
| bool handleGet(CivetServer *server, struct mg_connection *conn) { |
| std::string currentvalue; |
| { |
| std::lock_guard<std::mutex> lock(reponse_mutex_); |
| currentvalue = resp_; |
| } |
| |
| std::stringstream output; |
| output << "HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\nContent-Length: " << currentvalue.length() << "\r\nConnection: close\r\n\r\n"; |
| |
| mg_printf(conn, "%s", output.str().c_str()); |
| mg_printf(conn, "%s", currentvalue.c_str()); |
| return true; |
| } |
| |
| void setResponse(std::string response) { |
| std::lock_guard<std::mutex> lock(reponse_mutex_); |
| resp_ = response; |
| } |
| |
| protected: |
| std::mutex reponse_mutex_; |
| std::string resp_; |
| |
| }; |
| |
| std::unique_ptr<CivetServer> start_webserver(const std::string &port, std::string &rooturi, CivetHandler *handler, std::string &ca_cert); |
| |
| std::unique_ptr<CivetServer> start_webserver(const std::string &port, std::string &rooturi, CivetHandler *handler); |
| |
| std::unique_ptr<CivetServer> listener; |
| std::unique_ptr<ListeningProtocol> handler; |
| |
| private: |
| std::shared_ptr<logging::Logger> logger_; |
| }; |
| |
| REGISTER_RESOURCE(RESTReceiver, "Provides a webserver to display C2 heartbeat information"); |
| |
| } /* namesapce c2 */ |
| } /* namespace minifi */ |
| } /* namespace nifi */ |
| } /* namespace apache */ |
| } /* namespace org */ |
| |
| #endif /* LIBMINIFI_INCLUDE_C2_RESTRCVR_H_ */ |