| /** |
| * 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. |
| * |
| */ |
| package org.apache.kerby.kerberos.kerb.admin.message; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * Used to decode messages between admin and admin server. |
| */ |
| public class KadminCode { |
| public static ByteBuffer encodeMessage(AdminMessage adminMessage) { |
| int length = adminMessage.encodingLength(); |
| // 4 is the head to go through network |
| ByteBuffer buffer = ByteBuffer.allocate(length + 4); |
| buffer.putInt(length); // head in network |
| //buffer.putInt(adminMessage.getAdminMessageType().getValue()); |
| // type has been encoded in the admin message |
| buffer.put(adminMessage.getMessageBuffer()); |
| buffer.flip(); |
| return buffer; |
| } |
| |
| public static AdminMessage decodeMessage(ByteBuffer buffer) throws IOException { |
| //go through network, the total length has been removed. |
| int type = buffer.getInt(); |
| System.out.println("type: " + type); |
| AdminMessageType adminMessageType = AdminMessageType.findType(type); |
| AdminMessage adminMessage = null; |
| byte[] bytes = new byte[buffer.remaining()]; |
| buffer.get(bytes); |
| if (adminMessageType == AdminMessageType.ADD_PRINCIPAL_REQ) { |
| adminMessage = new AddPrincipalReq(); |
| System.out.println("check if decoding right: " |
| + new String(ByteBuffer.wrap(bytes).array())); |
| } else if (adminMessageType == AdminMessageType.ADD_PRINCIPAL_REP) { |
| adminMessage = new AddPrincipalRep(); |
| System.out.println("check if decoding right2: " |
| + new String(ByteBuffer.wrap(bytes).array())); |
| } else { |
| throw new IOException("Unknown Admin Message Type: " + type); |
| } |
| |
| return adminMessage; |
| } |
| } |