private void indicateNewCard() {
final String method = "indicateNewCard()";
if (LOG.isInfoEnabled()) {
LOG.info(method, "New card");
}
TVR tvr = transaction.getTVR();
tvr.getByte2().newCard();
}
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 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 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 selectForOnlineProcessing() {
TVR tvr = transaction.getTVR();
tvr.getByte4().transactionSelectedRandomlyForOnlineProcessing();
}
