| /* |
| * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.smartcardio; |
| |
| import java.nio.*; |
| import java.security.AccessController; |
| |
| import javax.smartcardio.*; |
| |
| import static sun.security.smartcardio.PCSC.*; |
| |
| import sun.security.action.GetPropertyAction; |
| |
| /** |
| * CardChannel implementation. |
| * |
| * @since 1.6 |
| * @author Andreas Sterbenz |
| */ |
| final class ChannelImpl extends CardChannel { |
| |
| // the card this channel is associated with |
| private final CardImpl card; |
| |
| // the channel number, 0 for the basic logical channel |
| private final int channel; |
| |
| // whether this channel has been closed. only logical channels can be closed |
| private volatile boolean isClosed; |
| |
| ChannelImpl(CardImpl card, int channel) { |
| this.card = card; |
| this.channel = channel; |
| } |
| |
| void checkClosed() { |
| card.checkState(); |
| if (isClosed) { |
| throw new IllegalStateException("Logical channel has been closed"); |
| } |
| } |
| |
| public Card getCard() { |
| return card; |
| } |
| |
| public int getChannelNumber() { |
| checkClosed(); |
| return channel; |
| } |
| |
| private static void checkManageChannel(byte[] b) { |
| if (b.length < 4) { |
| throw new IllegalArgumentException |
| ("Command APDU must be at least 4 bytes long"); |
| } |
| if ((b[0] >= 0) && (b[1] == 0x70)) { |
| throw new IllegalArgumentException |
| ("Manage channel command not allowed, use openLogicalChannel()"); |
| } |
| } |
| |
| public ResponseAPDU transmit(CommandAPDU command) throws CardException { |
| checkClosed(); |
| card.checkExclusive(); |
| byte[] commandBytes = command.getBytes(); |
| byte[] responseBytes = doTransmit(commandBytes); |
| return new ResponseAPDU(responseBytes); |
| } |
| |
| public int transmit(ByteBuffer command, ByteBuffer response) throws CardException { |
| checkClosed(); |
| card.checkExclusive(); |
| if ((command == null) || (response == null)) { |
| throw new NullPointerException(); |
| } |
| if (response.isReadOnly()) { |
| throw new ReadOnlyBufferException(); |
| } |
| if (command == response) { |
| throw new IllegalArgumentException |
| ("command and response must not be the same object"); |
| } |
| if (response.remaining() < 258) { |
| throw new IllegalArgumentException |
| ("Insufficient space in response buffer"); |
| } |
| byte[] commandBytes = new byte[command.remaining()]; |
| command.get(commandBytes); |
| byte[] responseBytes = doTransmit(commandBytes); |
| response.put(responseBytes); |
| return responseBytes.length; |
| } |
| |
| private final static boolean t0GetResponse = |
| getBooleanProperty("sun.security.smartcardio.t0GetResponse", true); |
| |
| private final static boolean t1GetResponse = |
| getBooleanProperty("sun.security.smartcardio.t1GetResponse", true); |
| |
| private final static boolean t1StripLe = |
| getBooleanProperty("sun.security.smartcardio.t1StripLe", false); |
| |
| private static boolean getBooleanProperty(String name, boolean def) { |
| String val = AccessController.doPrivileged(new GetPropertyAction(name)); |
| if (val == null) { |
| return def; |
| } |
| if (val.equalsIgnoreCase("true")) { |
| return true; |
| } else if (val.equalsIgnoreCase("false")) { |
| return false; |
| } else { |
| throw new IllegalArgumentException |
| (name + " must be either 'true' or 'false'"); |
| } |
| } |
| |
| private byte[] concat(byte[] b1, byte[] b2, int n2) { |
| int n1 = b1.length; |
| if ((n1 == 0) && (n2 == b2.length)) { |
| return b2; |
| } |
| byte[] res = new byte[n1 + n2]; |
| System.arraycopy(b1, 0, res, 0, n1); |
| System.arraycopy(b2, 0, res, n1, n2); |
| return res; |
| } |
| |
| private final static byte[] B0 = new byte[0]; |
| |
| private byte[] doTransmit(byte[] command) throws CardException { |
| // note that we modify the 'command' array in some cases, so it must |
| // be a copy of the application provided data. |
| try { |
| checkManageChannel(command); |
| setChannel(command); |
| int n = command.length; |
| boolean t0 = card.protocol == SCARD_PROTOCOL_T0; |
| boolean t1 = card.protocol == SCARD_PROTOCOL_T1; |
| if (t0 && (n >= 7) && (command[4] == 0)) { |
| throw new CardException |
| ("Extended length forms not supported for T=0"); |
| } |
| if ((t0 || (t1 && t1StripLe)) && (n >= 7)) { |
| int lc = command[4] & 0xff; |
| if (lc != 0) { |
| if (n == lc + 6) { |
| n--; |
| } |
| } else { |
| lc = ((command[5] & 0xff) << 8) | (command[6] & 0xff); |
| if (n == lc + 9) { |
| n -= 2; |
| } |
| } |
| } |
| boolean getresponse = (t0 && t0GetResponse) || (t1 && t1GetResponse); |
| int k = 0; |
| byte[] result = B0; |
| while (true) { |
| if (++k >= 32) { |
| throw new CardException("Could not obtain response"); |
| } |
| byte[] response = SCardTransmit |
| (card.cardId, card.protocol, command, 0, n); |
| int rn = response.length; |
| if (getresponse && (rn >= 2)) { |
| // see ISO 7816/2005, 5.1.3 |
| if ((rn == 2) && (response[0] == 0x6c)) { |
| // Resend command using SW2 as short Le field |
| command[n - 1] = response[1]; |
| continue; |
| } |
| if (response[rn - 2] == 0x61) { |
| // Issue a GET RESPONSE command with the same CLA |
| // using SW2 as short Le field |
| if (rn > 2) { |
| result = concat(result, response, rn - 2); |
| } |
| command[1] = (byte)0xC0; |
| command[2] = 0; |
| command[3] = 0; |
| command[4] = response[rn - 1]; |
| n = 5; |
| continue; |
| } |
| |
| } |
| result = concat(result, response, rn); |
| break; |
| } |
| return result; |
| } catch (PCSCException e) { |
| card.handleError(e); |
| throw new CardException(e); |
| } |
| } |
| |
| private static int getSW(byte[] res) throws CardException { |
| if (res.length < 2) { |
| throw new CardException("Invalid response length: " + res.length); |
| } |
| int sw1 = res[res.length - 2] & 0xff; |
| int sw2 = res[res.length - 1] & 0xff; |
| return (sw1 << 8) | sw2; |
| } |
| |
| private static boolean isOK(byte[] res) throws CardException { |
| return (res.length == 2) && (getSW(res) == 0x9000); |
| } |
| |
| private void setChannel(byte[] com) { |
| int cla = com[0]; |
| if (cla < 0) { |
| // proprietary class format, cannot set or check logical channel |
| // for now, just return |
| return; |
| } |
| // classes 001x xxxx is reserved for future use in ISO, ignore |
| if ((cla & 0xe0) == 0x20) { |
| return; |
| } |
| // see ISO 7816/2005, table 2 and 3 |
| if (channel <= 3) { |
| // mask of bits 7, 1, 0 (channel number) |
| // 0xbc == 1011 1100 |
| com[0] &= 0xbc; |
| com[0] |= channel; |
| } else if (channel <= 19) { |
| // mask of bits 7, 3, 2, 1, 0 (channel number) |
| // 0xbc == 1011 0000 |
| com[0] &= 0xb0; |
| com[0] |= 0x40; |
| com[0] |= (channel - 4); |
| } else { |
| throw new RuntimeException("Unsupported channel number: " + channel); |
| } |
| } |
| |
| public void close() throws CardException { |
| if (getChannelNumber() == 0) { |
| throw new IllegalStateException("Cannot close basic logical channel"); |
| } |
| if (isClosed) { |
| return; |
| } |
| card.checkExclusive(); |
| try { |
| byte[] com = new byte[] {0x00, 0x70, (byte)0x80, 0}; |
| com[3] = (byte)getChannelNumber(); |
| setChannel(com); |
| byte[] res = SCardTransmit(card.cardId, card.protocol, com, 0, com.length); |
| if (isOK(res) == false) { |
| throw new CardException("close() failed: " + PCSC.toString(res)); |
| } |
| } catch (PCSCException e) { |
| card.handleError(e); |
| throw new CardException("Could not close channel", e); |
| } finally { |
| isClosed = true; |
| } |
| } |
| |
| public String toString() { |
| return "PC/SC channel " + channel; |
| } |
| |
| } |