Package org.nfctools.spi.acs

Source Code of org.nfctools.spi.acs.ApduReaderWriter

/**
* 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.spi.acs;

import java.io.IOException;

import javax.smartcardio.Card;
import javax.smartcardio.CardChannel;
import javax.smartcardio.CardException;
import javax.smartcardio.CommandAPDU;
import javax.smartcardio.ResponseAPDU;

import org.nfctools.io.ByteArrayReader;
import org.nfctools.io.ByteArrayWriter;
import org.nfctools.utils.NfcUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@Deprecated
public class ApduReaderWriter implements ByteArrayReader, ByteArrayWriter {

  private Logger log = LoggerFactory.getLogger(getClass());

  private Card card;
  private CardChannel cardChannel;
  private byte[] responseData;

  public ApduReaderWriter(Card card, boolean useBasicChannel) {
    this.card = card;
    if (useBasicChannel)
      cardChannel = card.getBasicChannel();
  }

  //  public void disableAutoPICCPolling() throws CardException {
  //    byte[] command = { (byte)0xff, 0x00, 0x51, 0x00, 0x00 };
  //
  //    responseAPDU = new ResponseAPDU(card.transmitControlCommand(Acs.IOCTL_SMARTCARD_ACR122_ESCAPE_COMMAND, command));
  //    //      if (!Apdu.isSuccess(responseAPDU))
  //    //        throw new IOException("Error sending message => ["
  //    //            + NfcUtils.convertBinToASCII(responseAPDU.getBytes()) + "]");
  //    //      else
  //    //    System.out.println("Result: " + NfcUtils.convertBinToASCII(responseAPDU.getBytes()));
  //
  //  }
  //
  //  public void getStatus() throws IOException {
  //    byte[] command = { (byte)0xff, 0x00, 0x00, 0x02, (byte)0xd4, 0x04 };
  //    CommandAPDU commandAPDU = new CommandAPDU(0xff, 0, 0, 0, new byte[] { (byte)0xd4, 0x04 });
  //    sendMessageInternal(commandAPDU.getBytes());
  //  }
  //
  //  public void releaseTarget() throws IOException {
  //    CommandAPDU commandAPDU = new CommandAPDU(0xff, 0, 0, 0, new byte[] { (byte)0xd4, 0x52, 0x01 });
  //    sendMessageInternal(commandAPDU.getBytes());
  //  }
  //
  //  private void sendMessageInternal(byte[] command) throws IOException {
  //    try {
  //      responseAPDU = new ResponseAPDU(card.transmitControlCommand(Acs.IOCTL_SMARTCARD_ACR122_ESCAPE_COMMAND,
  //          command));
  //      if (!Apdu.isSuccess(responseAPDU))
  //        throw new IOException("Error sending message => ["
  //            + NfcUtils.convertBinToASCII(responseAPDU.getBytes()) + "]");
  //      else
  //        System.out.println("Result: " + NfcUtils.convertBinToASCII(responseAPDU.getBytes()));
  //    }
  //    catch (CardException e) {
  //      throw new IOException(e);
  //    }
  //
  //  }

  @Override
  public void write(byte[] data, int offset, int length) throws IOException {
    try {
      CommandAPDU commandAPDU = new CommandAPDU(0xff, 0, 0, 0, data, offset, length);
      byte[] commandBytes = commandAPDU.getBytes();

      if (log.isDebugEnabled()) {
        log.debug("command  APDU => " + NfcUtils.convertBinToASCII(commandBytes));
      }

      ResponseAPDU responseAPDU = null;
      if (cardChannel != null) {
        responseAPDU = cardChannel.transmit(commandAPDU);
      }
      else {
        byte[] transmitControlResponse = card.transmitControlCommand(Acs.IOCTL_SMARTCARD_ACR122_ESCAPE_COMMAND,
            commandBytes);
        responseAPDU = new ResponseAPDU(transmitControlResponse);
      }

      responseData = responseAPDU.getData();
      if (log.isDebugEnabled())
        log.debug("response APDU <= " + NfcUtils.convertBinToASCII(responseData));

      if (!ApduUtils.isSuccess(responseAPDU))
        throw new ApduException("Error sending message [" + NfcUtils.convertBinToASCII(data) + "] (" + offset
            + "," + length + ") => [" + NfcUtils.convertBinToASCII(responseData) + "]");
    }
    catch (CardException e) {
      throw new IOException(e);
    }
  }

  @Override
  public void setTimeout(long millis) {
  }

  @Override
  public int read(byte[] data, int offset, int length) throws IOException {
    if (responseData.length > length - offset)
      throw new IllegalArgumentException("buffer too small for response, needed " + responseData.length
          + " bytes");

    System.arraycopy(responseData, 0, data, offset, responseData.length);
    return responseData.length;
  }

}
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