diff options
Diffstat (limited to 'smcc/src/main/java/at/gv/egiz/smcc/util/SmartCardIO.java')
| -rw-r--r-- | smcc/src/main/java/at/gv/egiz/smcc/util/SmartCardIO.java | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/smcc/src/main/java/at/gv/egiz/smcc/util/SmartCardIO.java b/smcc/src/main/java/at/gv/egiz/smcc/util/SmartCardIO.java new file mode 100644 index 00000000..ffffd3af --- /dev/null +++ b/smcc/src/main/java/at/gv/egiz/smcc/util/SmartCardIO.java @@ -0,0 +1,196 @@ +/* +* Copyright 2008 Federal Chancellery Austria and +* Graz University of Technology +* +* 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 at.gv.egiz.smcc.util;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.smartcardio.Card;
+import javax.smartcardio.CardException;
+import javax.smartcardio.CardTerminal;
+import javax.smartcardio.CardTerminals;
+import javax.smartcardio.TerminalFactory;
+import javax.smartcardio.CardTerminals.State;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ *
+ * @author mcentner
+ */
+public class SmartCardIO {
+
+ private static final int STATE_INITIALIZED = 1;
+
+ private static final int STATE_TERMINAL_FACTORY = 2;
+
+ private static final int STATE_TERMINALS = 3;
+
+ private static Log log = LogFactory.getLog(SmartCardIO.class);
+
+ final Map<CardTerminal, Card> terminalCard_ = new HashMap<CardTerminal, Card>();
+
+ int state_ = STATE_INITIALIZED;
+
+ TerminalFactory terminalFactory_ = null;
+
+ CardTerminals cardTerminals_;
+
+ private void updateTerminalFactory() {
+ TerminalFactory terminalFactory = TerminalFactory.getDefault();
+ log.debug("TerminalFactory : " + terminalFactory);
+ if ("PC/SC".equals(terminalFactory.getType())) {
+ terminalFactory_ = terminalFactory;
+ }
+ if(state_ < STATE_TERMINAL_FACTORY) {
+ state_ = STATE_TERMINAL_FACTORY;
+ }
+ }
+
+ public boolean isPCSCSupported() {
+ if(state_ < STATE_TERMINAL_FACTORY) {
+ updateTerminalFactory();
+ }
+ return terminalFactory_ != null;
+ }
+
+ private void updateCardTerminals() {
+ if(terminalFactory_ != null) {
+ cardTerminals_ = terminalFactory_.terminals();
+ }
+ log.debug("CardTerminals : " + cardTerminals_);
+ if (state_ < STATE_TERMINALS) {
+ state_ = STATE_TERMINALS;
+ }
+ }
+
+ public CardTerminals getCardTerminals() {
+ if(state_ < STATE_TERMINAL_FACTORY) {
+ updateTerminalFactory();
+ }
+ if(state_ < STATE_TERMINALS) {
+ updateCardTerminals();
+ }
+ return cardTerminals_;
+ }
+
+ public boolean isTerminalPresent() {
+ CardTerminals cardTerminals = getCardTerminals();
+ if (cardTerminals != null) {
+ List<CardTerminal> terminals = null;
+ try {
+ terminals = cardTerminals.list(State.ALL);
+
+ // logging
+ if(log.isInfoEnabled()) {
+ if (terminals == null || terminals.isEmpty()) {
+ log.info("No card terminal found.");
+ } else {
+ StringBuffer msg = new StringBuffer();
+ msg.append("Found " + terminals.size() + " card terminal(s):");
+ for (CardTerminal terminal : terminals) {
+ msg.append("\n " + terminal.getName());
+ }
+ log.info(msg.toString());
+ }
+ }
+
+ return terminals != null && !terminals.isEmpty();
+ } catch (CardException e) {
+ log.info("Failed to list card terminals.", e);
+ return false;
+ }
+ } else {
+ return false;
+ }
+ }
+
+ private Map<CardTerminal, Card> updateCards() {
+
+ // clear card references if removed
+ try {
+ log.trace("terminals.list(State.CARD_REMOVAL)");
+ for (CardTerminal terminal : cardTerminals_.list(CardTerminals.State.CARD_REMOVAL)) {
+ Card card = terminalCard_.remove(terminal);
+ log.trace("card removed : " + card);
+ }
+ } catch (CardException e) {
+ log.debug(e);
+ }
+
+ // check inserted cards
+ Map<CardTerminal, Card> newCards = new HashMap<CardTerminal, Card>();
+ try {
+ log.trace("terminals.list(State.CARD_INSERTION)");
+ for (CardTerminal terminal : cardTerminals_.list(CardTerminals.State.CARD_INSERTION)) {
+
+ Card card = null;
+ try {
+ // try to connect to card
+ card = terminal.connect("*");
+ } catch (CardException e) {
+ log.trace("Failed to connect to card.", e);
+ }
+
+ // have we seen this card before?
+ if (terminalCard_.put(terminal, card) == null) {
+ terminalCard_.put(terminal, card);
+ newCards.put(terminal, card);
+ log.trace("terminal '" + terminal + "' card inserted : " + card);
+ }
+ }
+ } catch (CardException e) {
+ log.debug(e);
+ }
+ return newCards;
+
+ }
+
+ public Map<CardTerminal, Card> getCards() {
+ if(state_ < STATE_TERMINAL_FACTORY) {
+ updateTerminalFactory();
+ }
+ if(state_ < STATE_TERMINALS) {
+ updateCardTerminals();
+ }
+ updateCards();
+ Map<CardTerminal, Card> terminalCard = new HashMap<CardTerminal, Card>();
+ terminalCard.putAll(terminalCard_);
+ return Collections.unmodifiableMap(terminalCard);
+ }
+
+ public Map<CardTerminal, Card> waitForInserted(int timeout) {
+ if(state_ < STATE_TERMINAL_FACTORY) {
+ updateTerminalFactory();
+ }
+ if(state_ < STATE_TERMINALS) {
+ updateCardTerminals();
+ }
+ try {
+ // just waiting for a short period of time to allow for abort
+ cardTerminals_.waitForChange(timeout);
+ } catch (CardException e) {
+ log.debug("CardTerminals.waitForChange(" + timeout + ") failed.", e);
+ }
+ Map<CardTerminal, Card> newCards = new HashMap<CardTerminal, Card>();
+ newCards.putAll(updateCards());
+ return Collections.unmodifiableMap(newCards);
+ }
+}
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