public class SystemPropertiesServiceLookup extends XfsServiceLookup {
private static final Logger LOG = LoggerFactory.getLogger(SystemPropertiesServiceLookup.class);
private List<ServiceEntry> lookup() {
final String method = "lookup()";
final List<ServiceEntry> services = new ArrayList<ServiceEntry>();
for (Map.Entry<Object, Object> entry : System.getProperties().entrySet()) {
if (LOG.isDebugEnabled()) {
LOG.debug(method, entry.getKey() + "=" + entry.getValue());
}
XfsServiceClass serviceClass =
XfsServiceClass.getForServiceClassName(String.valueOf(entry.getKey()));
if (serviceClass != null) {
String logicalName = String.valueOf(entry.getValue());
if (LOG.isInfoEnabled()) {
LOG.info(method, serviceClass.name() + ": " + logicalName);
}
services.add(new ServiceEntry(logicalName, getServicClass(serviceClass)));
}
}
return services;
}
@Override
public Iterator<ServiceEntry> iterator() {
return lookup().iterator();
}
}
final class VelocityChecking {
private static final Logger LOG = LoggerFactory.getLogger(VelocityChecking.class);
private final EMVTransaction transaction;
VelocityChecking(EMVTransaction transaction) {
this.transaction = transaction;
}
void doVelocityChecking() {
final String method = "doVelocityChecking()";
try {
int lowerLimit =
BinaryNumber.toInt(transaction.getData(EMVTag.LOWER_CONSECUTIVE_OFFLINE_LIMIT));
int upperLimit =
BinaryNumber.toInt(transaction.getData(EMVTag.UPPER_CONSECUTIVE_OFFLINE_LIMIT));
int lastOnlineATC = readLastOnlineATC();
if (lastOnlineATC == 0) {
indicateNewCard();
}
int atc = readATC();
if (LOG.isInfoEnabled()) {
LOG.info(method, "ATC: " + atc + ", Last Online ATC: " + lastOnlineATC);
}
int consecutiveOffline = atc - lastOnlineATC;
TVR tvr = transaction.getTVR();
if (consecutiveOffline > lowerLimit) {
tvr.getByte4().lowerConsecutiveOfflineLimitExceeded();
}
if (consecutiveOffline > upperLimit) {
tvr.getByte4().upperConsecutiveOfflineLimitExceeded();
}
} catch (IOException e) {
if (LOG.isErrorEnabled()) {
LOG.error(method, "Error reading data from ICC", e);
}
} catch (ProcessingStateException e) {
if (LOG.isErrorEnabled()) {
LOG.error(method, "Error reading data from ICC", e);
}
TVR tvr = transaction.getTVR();
tvr.getByte4().lowerConsecutiveOfflineLimitExceeded();
tvr.getByte4().upperConsecutiveOfflineLimitExceeded();
} catch (DataNotFoundException e) {
if (LOG.isDebugEnabled()) {
LOG.debug(method, "Data not found: " + e.getEMVTag());
}
}
}
private int readATC() throws ProcessingStateException, IOException {
final String method = "readATC()";
try {
return BinaryNumber.toInt(read(EMVTag.APPLICATION_TRANSACTION_COUNTER));
} catch (ProcessingStateException e) {
if (LOG.isInfoEnabled()) {
LOG.info(method, "ATC is missing");
}
TVR tvr = transaction.getTVR();
tvr.getByte1().iccDataMissing();
throw e;
}
}
private int readLastOnlineATC() throws ProcessingStateException, IOException {
final String method = "readLastOnlineATC()";
try {
return BinaryNumber.toInt(read(EMVTag.LAST_ONLINE_ATC_REGISTER));
} catch (ProcessingStateException e) {
if (LOG.isInfoEnabled()) {
LOG.info(method, "Last Online ATC Register is missing");
}
throw e;
}
}
private byte[] read(EMVTag emvTag) throws IOException, ProcessingStateException {
GetDataCommand getDataCommand = GetDataCommand.create(emvTag.getTag());
RAPDU response = transaction.getICReader().transmit(getDataCommand);
new ProcessingState(response.getSW()).assertSuccessful();
return TLV.parse(response.getData()).getValue();
}
private void indicateNewCard() {
final String method = "indicateNewCard()";
if (LOG.isInfoEnabled()) {
LOG.info(method, "New card");
}
TVR tvr = transaction.getTVR();
tvr.getByte2().newCard();
}
}
final class RandomTransactionSelection {
private static final Logger LOG = LoggerFactory.getLogger(RandomTransactionSelection.class);
private final EMVTransaction transaction;
/** Amount, Authorised */
private BigInteger amount = null;
/** Terminal Floor Limit */
private BigInteger floorLimit = null;
/** Target Percentage to be Used for Random Selection */
private int targetPercentage = -1;
/** Maximum Target Percentage to be used for Biased Random Selection */
private int maxTargetPercentage = -1;
/** Threshold Value for Biased Random Selection */
private BigInteger thresholdValue = null;
private int randomNumber = -1;
RandomTransactionSelection(EMVTransaction transaction) {
this.transaction = transaction;
}
void perform() {
final String method = "perform()";
try {
prerequisites();
if (amount.compareTo(thresholdValue) < 0) {
randomSelection();
} else {
biasedRandomSelection();
}
} catch (DataNotFoundException e) {
if (LOG.isErrorEnabled()) {
LOG.error(method, "Data not found: " + e.getEMVTag(), e);
}
}
}
private void prerequisites() throws DataNotFoundException {
final String method = "prerequisites()";
amount = BinaryNumber.toBigInteger(transaction.getData(EMVTag.AMOUNT_AUTHORISED_BINARY));
floorLimit = BinaryNumber.toBigInteger(transaction.getData(EMVTag.TERMINAL_FLOOR_LIMIT));
RandomTransactionSelectionData selectionData =
transaction.getApplication().getRandomTransactionSelectionData();
targetPercentage = selectionData.getTargetPercentage();
maxTargetPercentage = selectionData.getMaxTargetPercentage();
thresholdValue = BinaryNumber.toBigInteger(selectionData.getThresholdValue());
if (thresholdValue.compareTo(floorLimit) >= 0) {
if (LOG.isWarnEnabled()) {
LOG.warn(
method,
"Threshold Value ("
+ thresholdValue
+ ") is greater or equals to floor limit ("
+ floorLimit
+ ")");
}
thresholdValue = BigInteger.ZERO;
}
randomNumber = generateRandomNumber();
if (LOG.isDebugEnabled()) {
LOG.debug(
method,
"Amount: "
+ amount
+ ", Floor Limit: "
+ floorLimit
+ ", Target Percentage: "
+ targetPercentage
+ ", Max Target Percentage: "
+ maxTargetPercentage
+ ", Threshold Value: "
+ thresholdValue
+ ", Random Number: "
+ randomNumber);
}
}
private void biasedRandomSelection() {
double factor = interpolationFactor();
int transactionTargetPercent =
(int) (((maxTargetPercentage - targetPercentage) * factor) + targetPercentage);
if (randomNumber <= transactionTargetPercent) {
selectForOnlineProcessing();
}
}
private double interpolationFactor() {
double dividend = amount.subtract(thresholdValue).doubleValue();
double divisor = floorLimit.subtract(thresholdValue).doubleValue();
return dividend / divisor;
}
private void randomSelection() {
final String method = "randomSelection()";
if (LOG.isDebugEnabled()) {
LOG.debug(
method, "Target Percentage: " + targetPercentage + ", Random number: " + randomNumber);
}
if (randomNumber <= targetPercentage) {
selectForOnlineProcessing();
}
}
private void selectForOnlineProcessing() {
TVR tvr = transaction.getTVR();
tvr.getByte4().transactionSelectedRandomlyForOnlineProcessing();
}
private int generateRandomNumber() {
return new Random().nextInt(99) + 1;
}
}
/** @author Andreas Fagschlunger */
public class O2XfsConf {
static {
System.loadLibrary("at.o2xfs.win32");
System.loadLibrary("at.o2xfs.xfs.conf");
}
private static final Logger LOG = LoggerFactory.getLogger(O2XfsConf.class);
private class ValuePair implements Map.Entry<String, String> {
private String name = null;
private String data = null;
private ValuePair(final String name, final String data) {
this.name = name;
this.data = data;
}
@Override
public String getKey() {
return name;
}
@Override
public String getValue() {
return data;
}
@Override
public String setValue(String value) {
throw new UnsupportedOperationException();
}
}
private static final int SIZE_LIMIT = 256;
public static final HKEY WFS_CFG_HKEY_XFS_ROOT = new HKEY(1L);
/** @since 3.0 */
public static final HKEY WFS_CFG_HKEY_MACHINE_XFS_ROOT = new HKEY(2L);
/** @since 3.0 */
public static final HKEY WFS_CFG_HKEY_USER_DEFAULT_XFS_ROOT = new HKEY(3L);
private List<HKEY> openKeys = null;
private static O2XfsConf instance = null;
private O2XfsConf() {
openKeys = new ArrayList<HKEY>();
}
public static O2XfsConf getInstance() {
if (instance == null) {
synchronized (O2XfsConf.class) {
if (instance == null) {
instance = new O2XfsConf();
}
}
}
return instance;
}
/**
* Closes the specified key.
*
* @param hKey Handle to the currently open key that is to be closed.
* @throws XfsException
*/
public void wfmCloseKey(final HKEY hKey) throws XfsException {
final int errorCode = wfmCloseKey0(hKey);
XfsException.throwFor(errorCode);
synchronized (openKeys) {
openKeys.remove(hKey);
}
}
private native int wfmCloseKey0(Type hKey);
/** Opens the specified key. */
public HKEY wfmOpenKey(final HKEY hKey, final String subKey) throws XfsException {
HKEY hkResult = new HKEY();
final int errorCode = wfmOpenKey0(hKey, (subKey == null ? null : new ZSTR(subKey)), hkResult);
XfsException.throwFor(errorCode);
synchronized (openKeys) {
openKeys.add(hkResult);
}
return hkResult;
}
private native int wfmOpenKey0(Type hKey, Type lpszSubKey, Type phkResult);
/** Retrieves the data for the value with the specified name, within the specified open key. */
public String wfmQueryValue(final HKEY hKey, final String valueName) throws XfsException {
final ZSTR data = new ZSTR(SIZE_LIMIT, true);
final DWORD cchData = new DWORD(0L);
final int errorCode = wfmQueryValue0(hKey, new ZSTR(valueName), data, cchData);
XfsException.throwFor(errorCode);
return data.toString();
}
private native int wfmQueryValue0(Type hKey, Type lpszValueName, Type lpszData, Type lpcchData);
/**
* Enumerates the subkeys of the specified open key. Retrieves information about one subkey each
* time it is called.
*
* @param hKey Handle to a currently open key, or the predefined handle value: {@link
* #WFS_CFG_HKEY_XFS_ROOT}
* @return the name of the subkey
*/
public String wfmEnumKey(final HKEY key, final DWORD iSubKey) throws XfsException {
final ZSTR name = new ZSTR(SIZE_LIMIT, true);
DWORD cchName = new DWORD(name.length);
FILETIME lastWrite = new FILETIME();
final int errorCode = wfmEnumKey0(key, iSubKey, name, cchName, lastWrite);
XfsException.throwFor(errorCode);
return name.toString();
}
private native int wfmEnumKey0(
Type hKey, Type iSubKey, Type lpszName, Type lpcchName, Type lpftLastWrite);
/**
* Enumerates the values of the specified open key. Retrieves the name and data for one value each
* time it is called.
*/
public Map.Entry<String, String> wfmEnumValue(final HKEY hKey, final DWORD iValue)
throws XfsException {
ZSTR value = new ZSTR(SIZE_LIMIT, true);
ZSTR data = new ZSTR(SIZE_LIMIT, true);
final int errorCode = wfmEnumValue0(hKey, iValue, value, data);
XfsException.throwFor(errorCode);
return new ValuePair(value.toString(), data.toString());
}
private native int wfmEnumValue0(Type hKey, Type iValue, Type lpszValue, Type lpszData);
@Override
protected void finalize() throws Throwable {
super.finalize();
final String method = "finalize()";
synchronized (openKeys) {
if (openKeys.size() > 0) {
if (LOG.isWarnEnabled()) {
LOG.warn(method, "Closing " + openKeys.size() + " open key(s)");
}
}
while (openKeys.size() > 0) {
HKEY hKey = openKeys.get(0);
try {
wfmCloseKey(hKey);
} catch (XfsException e) {
if (LOG.isErrorEnabled()) {
LOG.error(method, "Error closing HKEY: " + hKey, e);
}
}
}
}
}
}