/*
* 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.harmony.xnet.provider.jsse;
import java.io.IOException;
import java.security.SecureRandom;
import libcore.io.Streams;
/**
*
* Represents server hello message.
* @see <a href="http://www.ietf.org/rfc/rfc2246.txt">TLS 1.0 spec., 7.4.1.3.
* Server hello.</a>
*/
public class ServerHello extends Message {
/**
* Server version
*/
byte[] server_version = new byte[2];
/**
* Random bytes
*/
byte[] random = new byte[32];
/**
* Session id
*/
byte[] session_id;
/**
* Selected cipher suite
*/
CipherSuite cipher_suite;
/**
* Selected compression method
*/
byte compression_method;
/**
* Creates outbound message
* @param sr
* @param server_version
* @param session_id
* @param cipher_suite
* @param compression_method
*/
public ServerHello(SecureRandom sr, byte[] server_version,
byte[] session_id, CipherSuite cipher_suite, byte compression_method) {
long gmt_unix_time = new java.util.Date().getTime() / 1000;
sr.nextBytes(random);
random[0] = (byte) ((gmt_unix_time & 0xFF000000) >>> 24);
random[1] = (byte) ((gmt_unix_time & 0xFF0000) >>> 16);
random[2] = (byte) ((gmt_unix_time & 0xFF00) >>> 8);
random[3] = (byte) (gmt_unix_time & 0xFF);
this.session_id = session_id;
this.cipher_suite = cipher_suite;
this.compression_method = compression_method;
this.server_version = server_version;
length = 38 + session_id.length;
}
/**
* Creates inbound message
* @param in
* @param length
* @throws IOException
*/
public ServerHello(HandshakeIODataStream in, int length) throws IOException {
server_version[0] = (byte) in.read();
server_version[1] = (byte) in.read();
Streams.readFully(in, random);
int size = in.readUint8();
session_id = new byte[size];
in.read(session_id, 0, size);
byte b0 = (byte) in.read();
byte b1 = (byte) in.read();
cipher_suite = CipherSuite.getByCode(b0, b1);
compression_method = (byte) in.read();
this.length = 38 + session_id.length;
if (this.length != length) {
fatalAlert(AlertProtocol.DECODE_ERROR, "DECODE ERROR: incorrect ServerHello");
}
}
/**
* Sends message
* @param out
*/
@Override
public void send(HandshakeIODataStream out) {
out.write(server_version);
out.write(random);
out.writeUint8(session_id.length);
out.write(session_id);
out.write(cipher_suite.toBytes());
out.write(compression_method);
length = 38 + session_id.length;
}
/**
* Returns server random
* @return
*/
public byte[] getRandom() {
return random;
}
/**
* Returns message type
* @return
*/
@Override
public int getType() {
return Handshake.SERVER_HELLO;
}
}