1/* 2 * Copyright (C) 2014 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 17package libcore.tlswire.handshake; 18 19import libcore.tlswire.util.IoUtils; 20import java.io.ByteArrayInputStream; 21import java.io.DataInput; 22import java.io.DataInputStream; 23import java.io.IOException; 24 25/** 26 * Handshake Protocol message from TLS 1.2 RFC 5246. 27 */ 28public class HandshakeMessage { 29 public static final int TYPE_CLIENT_HELLO = 1; 30 31 public int type; 32 public byte[] body; 33 34 /** 35 * Parses the provided TLS record as a handshake message. 36 */ 37 public static HandshakeMessage read(DataInput in) throws IOException { 38 int type = in.readUnsignedByte(); 39 HandshakeMessage result; 40 switch (type) { 41 case TYPE_CLIENT_HELLO: 42 result = new ClientHello(); 43 break; 44 default: 45 result = new HandshakeMessage(); 46 break; 47 } 48 result.type = type; 49 int bodyLength = IoUtils.readUnsignedInt24(in); 50 result.body = new byte[bodyLength]; 51 in.readFully(result.body); 52 result.parseBody(new DataInputStream(new ByteArrayInputStream(result.body))); 53 return result; 54 } 55 56 /** 57 * Parses the provided body. The default implementation does nothing. 58 * 59 * @throws IOException if an I/O error occurs. 60 */ 61 protected void parseBody(@SuppressWarnings("unused") DataInput in) throws IOException {} 62} 63