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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed 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 libcore.tlswire.handshake;
import libcore.tlswire.util.IoUtils;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* {@code server_name} (SNI) {@link HelloExtension} from TLS 1.2 RFC 5246.
*/
public class ServerNameHelloExtension extends HelloExtension {
private static final int TYPE_HOST_NAME = 0;
public List<String> hostnames;
@Override
protected void parseData() throws IOException {
byte[] serverNameListBytes = IoUtils.readTlsVariableLengthByteVector(
new DataInputStream(new ByteArrayInputStream(data)), 0xffff);
ByteArrayInputStream serverNameListIn = new ByteArrayInputStream(serverNameListBytes);
DataInputStream in = new DataInputStream(serverNameListIn);
hostnames = new ArrayList<String>();
while (serverNameListIn.available() > 0) {
int type = in.readUnsignedByte();
if (type != TYPE_HOST_NAME) {
throw new IOException("Unsupported ServerName type: " + type);
}
byte[] hostnameBytes = IoUtils.readTlsVariableLengthByteVector(in, 0xffff);
String hostname = new String(hostnameBytes, "US-ASCII");
hostnames.add(hostname);
}
}
@Override
public String toString() {
return "HelloExtension{type: server_name, hostnames: " + hostnames + "}";
}
}
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