/**
* Copyright 2011-2012 Adrian Stabiszewski, as@nfctools.org
*
* 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 org.nfctools.llcp;
import java.io.IOException;
import org.nfctools.llcp.pdu.AbstractProtocolDataUnit;
import org.nfctools.llcp.pdu.PduDecoder;
import org.nfctools.llcp.pdu.Symmetry;
import org.nfctools.nfcip.NFCIPConnection;
import org.nfctools.nfcip.NFCIPConnectionListener;
public class LlcpOverNfcip implements NFCIPConnectionListener {
private PduDecoder pduDecoder = new PduDecoder();
private LlcpConnectionManagerFactory connectionManagerFactory;
public LlcpOverNfcip(LlcpConnectionManagerFactory connectionManagerFactory) {
this.connectionManagerFactory = connectionManagerFactory;
}
@Override
public void onConnection(NFCIPConnection connection) throws IOException {
LlcpConnectionManager connectionManager = connectionManagerFactory.createInstance();
connectionManager.init(extractParameters(connection.getGeneralBytes()));
try {
byte[] data = connection.isInitiator() ? pduDecoder.encode(new Symmetry()) : connection.receive();
while (!Thread.interrupted()) {
AbstractProtocolDataUnit requestPdu = pduDecoder.decode(data);
AbstractProtocolDataUnit responsePdu = requestPdu.processPdu(connectionManager);
byte[] pdu = pduDecoder.encode(responsePdu);
connection.send(pdu);
data = connection.receive();
}
}
finally {
connectionManager.clearConnections();
}
}
public Object[] extractParameters(byte[] generalBytes) {
if (generalBytes.length >= 3) {
if (generalBytes[0] == 0x46 && generalBytes[1] == 0x66 && generalBytes[2] == 0x6D) {
return pduDecoder.decodeParameter(generalBytes, 3);
}
}
return new Object[0];
}
}