/**
* Create a standard pay to address output for usage in {@link #createPaymentRequest} and {@link
* #createPaymentMessage}.
*
* @param amount amount to pay, or null
* @param address address to pay to
* @return output
*/
public static Protos.Output createPayToAddressOutput(@Nullable Coin amount, Address address) {
Protos.Output.Builder output = Protos.Output.newBuilder();
if (amount != null) {
final NetworkParameters params = address.getParameters();
if (params.hasMaxMoney() && amount.compareTo(params.getMaxMoney()) > 0)
throw new IllegalArgumentException("Amount too big: " + amount);
output.setAmount(amount.value);
} else {
output.setAmount(0);
}
output.setScript(ByteString.copyFrom(ScriptBuilder.createOutputScript(address).getProgram()));
return output.build();
}
private void parsePaymentRequest(Protos.PaymentRequest request) throws PaymentRequestException {
try {
if (request == null) throw new PaymentRequestException("request cannot be null");
if (request.getPaymentDetailsVersion() != 1)
throw new PaymentRequestException.InvalidVersion(
"Version 1 required. Received version " + request.getPaymentDetailsVersion());
paymentRequest = request;
if (!request.hasSerializedPaymentDetails())
throw new PaymentRequestException("No PaymentDetails");
paymentDetails =
Protos.PaymentDetails.newBuilder()
.mergeFrom(request.getSerializedPaymentDetails())
.build();
if (paymentDetails == null) throw new PaymentRequestException("Invalid PaymentDetails");
if (!paymentDetails.hasNetwork()) params = MainNetParams.get();
else params = NetworkParameters.fromPmtProtocolID(paymentDetails.getNetwork());
if (params == null)
throw new PaymentRequestException.InvalidNetwork(
"Invalid network " + paymentDetails.getNetwork());
if (paymentDetails.getOutputsCount() < 1)
throw new PaymentRequestException.InvalidOutputs("No outputs");
for (Protos.Output output : paymentDetails.getOutputsList()) {
if (output.hasAmount()) totalValue = totalValue.add(BigInteger.valueOf(output.getAmount()));
}
// This won't ever happen in practice. It would only happen if the user provided outputs
// that are obviously invalid. Still, we don't want to silently overflow.
if (totalValue.compareTo(NetworkParameters.MAX_MONEY) > 0)
throw new PaymentRequestException.InvalidOutputs("The outputs are way too big.");
} catch (InvalidProtocolBufferException e) {
throw new PaymentRequestException(e);
}
}
/**
* Parse transactions from payment message.
*
* @param params network parameters (needed for transaction deserialization)
* @param paymentMessage payment message to parse
* @return list of transactions
*/
public static List<Transaction> parseTransactionsFromPaymentMessage(
NetworkParameters params, Protos.Payment paymentMessage) {
final List<Transaction> transactions =
new ArrayList<Transaction>(paymentMessage.getTransactionsCount());
for (final ByteString transaction : paymentMessage.getTransactionsList())
transactions.add(params.getDefaultSerializer().makeTransaction(transaction.toByteArray()));
return transactions;
}
/**
* Create a payment request. You may want to sign the request using {@link #signPaymentRequest}.
* Use {@link Protos.PaymentRequest.Builder#build} to get the actual payment request.
*
* @param params network parameters
* @param outputs list of outputs to request coins to
* @param memo arbitrary, user readable memo, or null if none
* @param paymentUrl URL to send payment message to, or null if none
* @param merchantData arbitrary merchant data, or null if none
* @return created payment request, in its builder form
*/
public static Protos.PaymentRequest.Builder createPaymentRequest(
NetworkParameters params,
List<Protos.Output> outputs,
@Nullable String memo,
@Nullable String paymentUrl,
@Nullable byte[] merchantData) {
final Protos.PaymentDetails.Builder paymentDetails = Protos.PaymentDetails.newBuilder();
paymentDetails.setNetwork(params.getPaymentProtocolId());
for (Protos.Output output : outputs) paymentDetails.addOutputs(output);
if (memo != null) paymentDetails.setMemo(memo);
if (paymentUrl != null) paymentDetails.setPaymentUrl(paymentUrl);
if (merchantData != null) paymentDetails.setMerchantData(ByteString.copyFrom(merchantData));
paymentDetails.setTime(Utils.currentTimeSeconds());
final Protos.PaymentRequest.Builder paymentRequest = Protos.PaymentRequest.newBuilder();
paymentRequest.setSerializedPaymentDetails(paymentDetails.build().toByteString());
return paymentRequest;
}