1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.googlecode.android_scripting.jsonrpc; 18 19 import com.googlecode.android_scripting.Log; 20 import com.googlecode.android_scripting.SimpleServer; 21 22 import java.io.BufferedReader; 23 import java.io.InputStreamReader; 24 import java.io.PrintWriter; 25 import java.net.Socket; 26 27 /** 28 * A JSON RPC server that forwards RPC calls to a specified receiver object. 29 * 30 */ 31 public class JsonRpcServer extends SimpleServer { 32 private final RpcReceiverManagerFactory mRpcReceiverManagerFactory; 33 34 // private final String mHandshake; 35 36 /** 37 * Construct a {@link JsonRpcServer} connected to the provided {@link RpcReceiverManager}. 38 * 39 * @param managerFactory the {@link RpcReceiverManager} to register with the server 40 * @param handshake the secret handshake required for authorization to use this server 41 */ JsonRpcServer(RpcReceiverManagerFactory managerFactory, String handshake)42 public JsonRpcServer(RpcReceiverManagerFactory managerFactory, String handshake) { 43 // mHandshake = handshake; 44 mRpcReceiverManagerFactory = managerFactory; 45 } 46 47 @Override shutdown()48 public void shutdown() { 49 super.shutdown(); 50 // Notify all RPC receiving objects. They may have to clean up some of their state. 51 for (RpcReceiverManager manager : mRpcReceiverManagerFactory.getRpcReceiverManagers() 52 .values()) { 53 manager.shutdown(); 54 } 55 } 56 send(PrintWriter writer, Object result)57 private void send(PrintWriter writer, Object result) { 58 writer.write(result + "\n"); 59 writer.flush(); 60 Log.v("Sent Response: " + result); 61 } 62 63 @Override handleConnection(Socket socket)64 protected void handleConnection(Socket socket) throws Exception { 65 BufferedReader reader = 66 new BufferedReader(new InputStreamReader(socket.getInputStream()), 8192); 67 PrintWriter writer = new PrintWriter(socket.getOutputStream(), true); 68 String data; 69 JsonRpcHandler jsonRpcHandler = new JsonRpcHandler(mRpcReceiverManagerFactory); 70 while ((data = reader.readLine()) != null) { 71 Log.v("Received Request: " + data); 72 send(writer, jsonRpcHandler.getResponse(data)); 73 } 74 } 75 } 76