Updated on 2026-08-14

This commit is contained in:
Tangem 2020-08-21 11:32:26 +03:00
commit 8bb731fd8f
4 changed files with 793 additions and 0 deletions

View file

@ -20,6 +20,7 @@ public enum Blockchain {
Rootstock("RSK", "RBTC", 1.0, R.drawable.tangem2, "RSK"),
RootstockToken("RskToken", "RBTC", 1.0, R.drawable.tangem2, "RSK"),
Cardano("CARDANO", "ADA", 1000000.0, R.drawable.tangem2, "Cardano"),
CardanoShelley("CARDANO-S", "ADA", 1000000.0, R.drawable.tangem2, "Cardano"),
Ripple("XRP", "XRP", 1000000.0, R.drawable.ic_logo_xrp, "XRP Ledger"),
Binance("BINANCE", "BNB", 100000000.0, R.drawable.ic_logo_binance, "Binance"),
BinanceTestNet("BINANCE/test", "BNB", 100000000.0, R.drawable.ic_logo_binance, "Binance Testnet"),

View file

@ -11,6 +11,7 @@ private val payIdSupported = EnumSet.of(
Blockchain.Stellar,
Blockchain.StellarAsset,
Blockchain.Cardano,
Blockchain.CardanoShelley,
Blockchain.Ducatus,
Blockchain.BitcoinCash,
Blockchain.Binance,

View file

@ -9,6 +9,7 @@ import com.tangem.wallet.btc.BtcEngine
import com.tangem.wallet.btcmultisig.BtcMultisigEngine
import com.tangem.wallet.cardano.CardanoData
import com.tangem.wallet.cardano.CardanoEngine
import com.tangem.wallet.cardano.CardanoShelleyEngine
import com.tangem.wallet.ducatus.DucatusEngine
import com.tangem.wallet.eos.EosEngine
import com.tangem.wallet.eth.EthEngine
@ -51,6 +52,7 @@ object CoinEngineFactory {
Blockchain.Rootstock -> RskEngine()
Blockchain.RootstockToken -> RskTokenEngine()
Blockchain.Cardano -> CardanoEngine()
Blockchain.CardanoShelley -> CardanoShelleyEngine()
Blockchain.Ripple -> XrpEngine()
Blockchain.Binance, Blockchain.BinanceTestNet -> BinanceEngine()
Blockchain.BinanceAsset -> BinanceAssetEngine()
@ -91,6 +93,8 @@ object CoinEngineFactory {
RskTokenEngine(context)
else if (Blockchain.Cardano == context.blockchain)
CardanoEngine(context)
else if (Blockchain.CardanoShelley == context.blockchain)
CardanoShelleyEngine(context)
else if (Blockchain.Ripple == context.blockchain)
XrpEngine(context)
else if (Blockchain.Binance == context.blockchain || Blockchain.BinanceTestNet == context.blockchain)

View file

@ -0,0 +1,787 @@
package com.tangem.wallet.cardano;
import android.net.Uri;
import android.text.InputFilter;
import android.util.Base64;
import android.util.Log;
import com.google.android.gms.common.util.ArrayUtils;
import com.tangem.App;
import com.tangem.Constant;
import com.tangem.data.local.PendingTransactionsStorage;
import com.tangem.data.network.ServerApiAdalite;
import com.tangem.data.network.ServerApiPayId;
import com.tangem.data.network.model.AdaliteResponse;
import com.tangem.data.network.model.AdaliteResponseUtxo;
import com.tangem.data.network.model.AdaliteTxData;
import com.tangem.data.network.model.AdaliteUtxoData;
import com.tangem.data.network.model.PayIdAddress;
import com.tangem.data.network.model.PayIdResponse;
import com.tangem.tangem_card.data.TangemCard;
import com.tangem.tangem_card.tasks.SignTask;
import com.tangem.tangem_card.util.Util;
import com.tangem.util.DecimalDigitsInputFilter;
import com.tangem.wallet.BTCUtils;
import com.tangem.wallet.BalanceValidator;
import com.tangem.wallet.Base58;
import com.tangem.wallet.BuildConfig;
import com.tangem.wallet.CoinData;
import com.tangem.wallet.CoinEngine;
import com.tangem.wallet.R;
import com.tangem.wallet.TangemContext;
import com.tangem.wallet.binance.client.encoding.Bech32;
import com.tangem.wallet.binance.client.encoding.Crypto;
import org.spongycastle.crypto.Digest;
import org.spongycastle.crypto.util.DigestFactory;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.List;
import java.util.zip.CRC32;
import co.nstant.in.cbor.CborBuilder;
import co.nstant.in.cbor.CborDecoder;
import co.nstant.in.cbor.CborEncoder;
import co.nstant.in.cbor.CborException;
import co.nstant.in.cbor.builder.ArrayBuilder;
import co.nstant.in.cbor.builder.MapBuilder;
import co.nstant.in.cbor.model.Array;
import co.nstant.in.cbor.model.ByteString;
import co.nstant.in.cbor.model.DataItem;
import co.nstant.in.cbor.model.UnsignedInteger;
import io.reactivex.CompletableObserver;
import io.reactivex.SingleObserver;
import io.reactivex.observers.DisposableCompletableObserver;
import io.reactivex.observers.DisposableSingleObserver;
import static com.tangem.wallet.Base58.decodeBase58;
import static com.tangem.wallet.Base58.encodeBase58;
public class CardanoShelleyEngine extends CoinEngine {
private static final String TAG = CardanoShelleyEngine.class.getSimpleName();
private static final String BECH32_HRP = "addr1";
private static final byte ADDRESS_HEADER_BYTE = 97;
public CardanoData coinData = null;
public CardanoShelleyEngine(TangemContext context) throws Exception {
super(context);
if (context.getCoinData() == null) {
coinData = new CardanoData();
context.setCoinData(coinData);
} else if (context.getCoinData() instanceof CardanoData) {
coinData = (CardanoData) context.getCoinData();
} else {
throw new Exception("Invalid type of Blockchain data for CardanoEngine");
}
}
public CardanoShelleyEngine() {
super();
}
private static int getDecimals() {
return 6;
}
private void checkBlockchainDataExists() throws Exception {
if (coinData == null) throw new Exception("No blockchain data");
}
@Override
public boolean awaitingConfirmation() {
return App.pendingTransactionsStorage.hasTransactions(ctx.getCard());
}
@Override
public String getBalanceHTML() {
Amount balance = getBalance();
if (balance != null) {
return balance.toDescriptionString(getDecimals());
} else {
return "";
}
}
@Override
public String getBalanceCurrency() {
return "ADA";
}
@Override
public boolean isBalanceNotZero() {
if (coinData == null) return false;
if (coinData.getBalanceInInternalUnits() == null) return false;
return coinData.getBalanceInInternalUnits().notZero();
}
@Override
public boolean hasBalanceInfo() {
if (coinData == null) return false;
return coinData.hasBalanceInfo();
}
@Override
public boolean isExtractPossible() {
if (!hasBalanceInfo()) {
ctx.setMessage(R.string.loaded_wallet_error_obtaining_blockchain_data);
} else if (!isBalanceNotZero()) {
ctx.setMessage(R.string.general_wallet_empty);
} else if (awaitingConfirmation()) {
ctx.setMessage(R.string.loaded_wallet_message_wait);
} else if (coinData.getUnspentOutputs().size() == 0) {
ctx.setMessage(R.string.loaded_wallet_message_refresh);
} else {
return true;
}
return false;
}
@Override
public String getFeeCurrency() {
return "ADA";
}
@Override
public boolean validateAddress(String address) {
if (address == null || address.isEmpty()) {
return false;
}
if (address.contains("$")) { // PayID
return validatePayId(address);
}
if (address.startsWith(BECH32_HRP)) {
try {
Bech32.decode(address);
return true;
} catch (Exception e) {
return false;
}
}
byte[] decAddress = Base58.decodeBase58(address);
if (decAddress == null || decAddress.length == 0) {
return false;
}
ByteArrayInputStream bais = new ByteArrayInputStream(decAddress);
try {
List<DataItem> addressList = ((Array) new CborDecoder(bais).decode().get(0)).getDataItems();
byte[] addressBytes = ((ByteString) addressList.get(0)).getBytes();
long addressChecksum = ((UnsignedInteger) addressList.get(1)).getValue().longValue();
final CRC32 crc32 = new CRC32();
crc32.update(addressBytes);
long calculatedChecksum = crc32.getValue();
if (addressChecksum != calculatedChecksum) {
return false;
}
} catch (Exception e) {
return false;
}
return true;
}
@Override
public boolean isNeedCheckNode() {
return true;
}
@Override
public Uri getWalletExplorerUri() {
return Uri.parse("https://cardanoexplorer.com/address/" + ctx.getCoinData().getWallet());
}
@Override
public Uri getShareWalletUri() {
return Uri.parse(ctx.getCoinData().getWallet());
}
@Override
public InputFilter[] getAmountInputFilters() {
return new InputFilter[]{new DecimalDigitsInputFilter(getDecimals())};
}
@Override
public boolean checkNewTransactionAmount(Amount amount) {
if (BuildConfig.FLAVOR == Constant.FLAVOR_TANGEM_CARDANO) {
return true;
}
if (coinData == null) return false;
if (amount.compareTo(convertToAmount(coinData.getBalanceInInternalUnits())) > 0) {
return false;
}
return true;
}
@Override
public boolean checkNewTransactionAmountAndFee(Amount amountValue, Amount feeValue, Boolean isIncludeFee) {
InternalAmount fee;
InternalAmount amount;
try {
checkBlockchainDataExists();
amount = convertToInternalAmount(amountValue);
fee = convertToInternalAmount(feeValue);
} catch (Exception e) {
e.printStackTrace();
return false;
}
if (fee == null || amount == null)
return false;
if (fee.isZero() || amount.isZero())
return false;
if (isIncludeFee && (amount.compareTo(coinData.getBalanceInInternalUnits()) > 0 || amount.compareTo(fee) < 0))
return false;
if (!isIncludeFee && amount.add(fee).compareTo(coinData.getBalanceInInternalUnits()) > 0)
return false;
return true;
}
@Override
public boolean validateBalance(BalanceValidator balanceValidator) {
try {
if (((ctx.getCard().getOfflineBalance() == null) && !ctx.getCoinData().isBalanceReceived()) || (!ctx.getCoinData().isBalanceReceived() && (ctx.getCard().getRemainingSignatures() != ctx.getCard().getMaxSignatures()))) {
balanceValidator.setScore(0);
balanceValidator.setFirstLine(R.string.balance_validator_first_line_unknown_balance);
balanceValidator.setSecondLine(R.string.balance_validator_second_line_unverified_balance);
return false;
}
if (coinData.isBalanceReceived()) {// && coinData.isBalanceEqual()) { TODO:check
balanceValidator.setScore(100);
balanceValidator.setFirstLine(R.string.balance_validator_first_line_verified_balance);
balanceValidator.setSecondLine(R.string.balance_validator_second_line_confirmed_in_blockchain);
if (coinData.getBalanceInInternalUnits().isZero()) {
balanceValidator.setFirstLine(R.string.balance_validator_first_line_empty_wallet);
balanceValidator.setSecondLine(R.string.empty_string);
}
}
// if ((ctx.getCard().getOfflineBalance() != null) && !coinData.isBalanceReceived() && ctx.getCard().getRemainingSignatures() == ctx.getCard().getMaxSignatures()) {
// balanceValidator.setScore(80);
// balanceValidator.setFirstLine(R.string.balance_validator_first_line_verified_offline);
// balanceValidator.setSecondLine(R.string.balance_validator_second_line_internet_to_get_balance);
// }
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
@Override
public Amount getBalance() {
if (!hasBalanceInfo()) return null;
return convertToAmount(coinData.getBalanceInInternalUnits());
}
@Override
public String evaluateFeeEquivalent(String fee) {
if (!coinData.getAmountEquivalentDescriptionAvailable()) return "";
try {
Amount feeAmount = new Amount(fee, getFeeCurrency());
return feeAmount.toEquivalentString(coinData.getRate());
} catch (Exception e) {
return "";
}
}
@Override
public String getBalanceEquivalent() {
if (coinData == null || !coinData.getAmountEquivalentDescriptionAvailable()) return "";
Amount balance = getBalance();
if (balance == null) return "";
return balance.toEquivalentString(coinData.getRate());
}
@Override
public String calculateAddress(byte[] pkUncompressed) throws CborException, IOException {
Blake2b blake2b = Blake2b.Digest.newInstance(28);
byte[] publicKeyHash = blake2b.digest(pkUncompressed);
byte[] addressBytes = ArrayUtils.concatByteArrays(new byte[] {ADDRESS_HEADER_BYTE}, publicKeyHash);
byte[] convertedAddressBytes = Crypto.convertBits(addressBytes, 0, addressBytes.length, 8, 5, true);
return Bech32.encode("addr", convertedAddressBytes);
}
@Override
public Amount convertToAmount(InternalAmount internalAmount) {
BigDecimal d = internalAmount.divide(new BigDecimal("1000000"));
return new Amount(d, getBalanceCurrency());
}
@Override
public Amount convertToAmount(String strAmount, String currency) {
return new Amount(strAmount, currency);
}
@Override
public InternalAmount convertToInternalAmount(Amount amount) {
BigDecimal d = amount.multiply(new BigDecimal("1000000"));
return new InternalAmount(d, "Lovelace");
}
@Override
public InternalAmount convertToInternalAmount(byte[] bytes) {
if (bytes == null) return null;
byte[] reversed = new byte[bytes.length];
for (int i = 0; i < bytes.length; i++) reversed[i] = bytes[bytes.length - i - 1];
return new InternalAmount(Util.byteArrayToLong(reversed), "Lovelace");
}
@Override
public byte[] convertToByteArray(InternalAmount internalAmount) {
byte[] bytes = Util.longToByteArray(internalAmount.longValueExact());
// byte[] reversed = new byte[bytes.length]; TODO: check if needed
// for (int i = 0; i < bytes.length; i++) reversed[i] = bytes[bytes.length - i - 1];
// return reversed;
return bytes;
}
@Override
public CoinData createCoinData() {
return new CardanoData();
}
@Override
public String getUnspentInputsDescription() {
return coinData.getUnspentInputsDescription();
}
@Override
public SignTask.TransactionToSign constructTransaction(Amount amountValue, Amount feeValue, boolean IncFee, String targetAddress) throws Exception {
checkBlockchainDataExists();
String destination;
//PayID
if (coinData.getResolvedPayIdAddress() != null) {
destination = coinData.getResolvedPayIdAddress();
} else {
destination = targetAddress;
}
byte[] destinationBytes;
if (destination.startsWith(BECH32_HRP)) {
byte[] decoded = Bech32.decode(destination).getData();
destinationBytes = Crypto.convertBits(decoded, 0, decoded.length, 5, 8, false);
} else {
destinationBytes = decodeBase58(destination);
}
String changeAddress = ctx.getCoinData().getWallet();
byte[] changeAddressDecoded = Bech32.decode(changeAddress).getData();
byte[] changeAddressBytes = Crypto.convertBits(changeAddressDecoded, 0, changeAddressDecoded.length, 5, 8, false);
byte[] pbKey = ctx.getCard().getWalletPublicKey();
List<CardanoData.UnspentOutput> utxoList = coinData.getUnspentOutputs();
long fullAmount = coinData.getBalance();
// long fullAmount = 0; TODO: check
// for (int i = 0; i < unspentOutputs.size(); ++i) {
// fullAmount += unspentOutputs.get(i).value;
// }
long fees = convertToInternalAmount(feeValue).longValueExact();
long amount = convertToInternalAmount(amountValue).longValueExact();
long change = fullAmount - amount;
if (IncFee) {
amount = amount - fees;
} else {
change = change - fees;
}
final long amountFinal = amount;
final long changeFinal = change;
if (amountFinal < 1000000 || (changeFinal < 1000000 && changeFinal != 0)) {
throw new IllegalArgumentException("Sent amount and change cannot be less than 1 ADA");
}
//TODO - uncomment
// if (amount + fees > fullAmount) {
// throw new CardProtocol.TangemException_WrongAmount(String.format("Balance (%d) < change (%d) + amount (%d)", fullAmount, change, amount));
// }
MapBuilder<CborBuilder> transactionMap = new CborBuilder().addMap();
//Inputs
ArrayBuilder<CborBuilder> inputsArray = new CborBuilder().addArray();
for (CardanoData.UnspentOutput utxo : utxoList) {
inputsArray.addArray()
.add(Util.fromHexString(utxo.txID))
.add(utxo.Index);
}
DataItem inputsDataItem = inputsArray.end().build().get(0);
DataItem inputsKey = new CborBuilder().add(0).build().get(0);
transactionMap.put(inputsKey, inputsDataItem);
ArrayBuilder<CborBuilder> outputsArray = new CborBuilder().addArray();
//1st output
outputsArray
.addArray()
.add(destinationBytes)
.add(amountFinal);
//2nd output (optional)
if (changeFinal > 0) {
outputsArray
.addArray()
.add(changeAddressBytes)
.add(changeFinal)
.end();
}
DataItem outputsDataItem = outputsArray.end().build().get(0);
DataItem outputsKey = new CborBuilder().add(1).build().get(0);
transactionMap.put(outputsKey, outputsDataItem);
transactionMap.put(2, fees);
transactionMap.put(3, 90000000);
DataItem txBodyDataItem = transactionMap.end().build().get(0);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
new CborEncoder(baos).encode(new CborBuilder().add(txBodyDataItem).build());
byte[] txBody = baos.toByteArray();
final Blake2b blake2b = Blake2b.Digest.newInstance(32);
byte[] txHash = blake2b.digest(txBody);
// baos.reset();
// new CborEncoder(baos).encode(new CborBuilder().add(protocolMagic).build());
// byte[] magic = baos.toByteArray();
//
// //dataToSign prefix
// baos.reset();
// baos.write(new byte[]{(byte) 0x01});
// baos.write(magic);
// baos.write(new byte[]{(byte) 0x58, (byte) 0x20});
//
// baos.write(txHash);
// byte[] dataToSign = baos.toByteArray();
byte[] dataToSign = txHash;
return new SignTask.TransactionToSign() {
@Override
public boolean isSigningMethodSupported(TangemCard.SigningMethod signingMethod) {
return signingMethod == TangemCard.SigningMethod.Sign_Hash;
}
@Override
public byte[][] getHashesToSign() {
byte[][] dataForSign = new byte[1][];
dataForSign[0] = dataToSign;
return dataForSign;
}
@Override
public byte[] getRawDataToSign() throws Exception {
throw new Exception("Signing of raw transaction not supported for " + this.getClass().getSimpleName());
}
@Override
public String getHashAlgToSign() throws Exception {
throw new Exception("Signing of raw transaction not supported for " + this.getClass().getSimpleName());
}
@Override
public byte[] getIssuerTransactionSignature(byte[] dataToSignByIssuer) throws Exception {
throw new Exception("Transaction validation by issuer not supported in this version");
}
@Override
public byte[] onSignCompleted(byte[] signFromCard) throws Exception {
CborBuilder signedTxBuilder = new CborBuilder();
ArrayBuilder<CborBuilder> txArray = signedTxBuilder.addArray();
txArray.add(txBodyDataItem);
MapBuilder<ArrayBuilder<CborBuilder>> witnessMap = txArray.addMap();
txArray.add((DataItem) null);
DataItem witnessDataItem = new CborBuilder().addArray().addArray()
.add(pbKey)
.add(signFromCard)
.end().end().build().get(0);
DataItem witnessKey = new CborBuilder().add(0).build().get(0);
witnessMap.put(witnessKey, witnessDataItem);
baos.reset();
new CborEncoder(baos).encode(signedTxBuilder.build());
byte[] txForSend = baos.toByteArray();
notifyOnNeedSendTransaction(txForSend);
//String hex = BTCUtils.toHex(txForSend);
return txForSend;
}
};
}
private int calculateEstimatedTransactionSize(Amount amount) {
int outputsNumber = coinData.getBalance() == convertToInternalAmount(amount).longValueExact() ? 1 : 2;
return coinData.getUnspentOutputs().size() * 40 + outputsNumber * 65 + 160;
}
@Override
public void requestBalanceAndUnspentTransactions(BlockchainRequestsCallbacks blockchainRequestsCallbacks) {
final ServerApiAdalite serverApiAdalite = new ServerApiAdalite();
ServerApiAdalite.ResponseListener adaliteListener = new ServerApiAdalite.ResponseListener() {
@Override
public void onSuccess(String method, AdaliteResponse adaliteResponse) {
Log.i(TAG, "onSuccess: " + method);
try {
String walletAddress = adaliteResponse.getRight().getCaAddress();
if (!walletAddress.equals(coinData.getWallet())) {
// todo - check
throw new Exception("Invalid wallet address in answer!");
}
coinData.setBalanceReceived(true);
coinData.setBalance(adaliteResponse.getRight().getCaBalance().getGetCoin());
coinData.setValidationNodeDescription(serverApiAdalite.getCurrentURL());
//check pending
if (App.pendingTransactionsStorage.hasTransactions(ctx.getCard())) {
for (PendingTransactionsStorage.TransactionInfo pendingTx : App.pendingTransactionsStorage.getTransactions(ctx.getCard()).getTransactions()) {
String pendingId = CalculateTxHash(pendingTx.getTx());
for (AdaliteTxData walletTx : adaliteResponse.getRight().getCaTxList()) {
if (walletTx.getCtbId().equals(pendingId)) {
App.pendingTransactionsStorage.removeTransaction(ctx.getCard(), pendingTx.getTx());
}
}
}
}
} catch (Exception e) {
Log.e(TAG, "FAIL ADALITE_ADDRESS Exception");
e.printStackTrace();
}
if (serverApiAdalite.isRequestsSequenceCompleted()) {
blockchainRequestsCallbacks.onComplete(!ctx.hasError());
} else {
blockchainRequestsCallbacks.onProgress();
}
}
@Override
public void onSuccess(String method, AdaliteResponseUtxo adaliteResponseUtxo) {
Log.i(TAG, "onSuccess: " + method);
try {
coinData.getUnspentOutputs().clear();
for (AdaliteUtxoData utxo : adaliteResponseUtxo.getRight()) {
CardanoData.UnspentOutput unspentOutput = new CardanoData.UnspentOutput();
unspentOutput.txID = utxo.getCuId();
unspentOutput.Amount = utxo.getCuCoins().getGetCoin();
unspentOutput.Index = utxo.getCuOutIndex();
coinData.getUnspentOutputs().add(unspentOutput);
}
} catch (Exception e) {
Log.e(TAG, "FAIL ADALITE_UNSPENT_OUTPUTS Exception");
e.printStackTrace();
}
if (serverApiAdalite.isRequestsSequenceCompleted()) {
blockchainRequestsCallbacks.onComplete(!ctx.hasError());
} else {
blockchainRequestsCallbacks.onProgress();
}
}
@Override
public void onSuccess(String method, String stringResponse) {
Log.e(TAG, "Wrong response type for requestBalanceAndUnspentTransactions");
ctx.setError("Wrong response type for requestBalanceAndUnspentTransactions");
blockchainRequestsCallbacks.onComplete(false);
}
@Override
public void onFail(String method, String message) {
Log.e(TAG, "onFail: " + method + " " + message);
ctx.setError(message);
if (serverApiAdalite.isRequestsSequenceCompleted()) {
blockchainRequestsCallbacks.onComplete(false);
} else {
blockchainRequestsCallbacks.onProgress();
}
}
};
serverApiAdalite.setResponseListener(adaliteListener);
serverApiAdalite.requestData(ServerApiAdalite.ADALITE_ADDRESS, ctx.getCoinData().getWallet(), "");
serverApiAdalite.requestData(ServerApiAdalite.ADALITE_UNSPENT_OUTPUTS, ctx.getCoinData().getWallet(), "");
}
@Override
public void requestFee(BlockchainRequestsCallbacks blockchainRequestsCallbacks, String targetAddress, Amount amount) {
// int calcSize = calculateEstimatedTransactionSize(targetAddress, amount);
CompletableObserver payIdObserver = new DisposableCompletableObserver() {
@Override
public void onComplete() {
int calcSize = calculateEstimatedTransactionSize(amount);
Log.e(TAG, String.format("Estimated tx size %d", calcSize));
calculateFee(calcSize);
blockchainRequestsCallbacks.onComplete(true);
}
@Override
public void onError(Throwable e) {
ctx.setError(e.getMessage());
blockchainRequestsCallbacks.onComplete(false);
}
};
if (targetAddress.contains("$")) { // PayID
resolvePayID(targetAddress, payIdObserver);
} else {
int calcSize = calculateEstimatedTransactionSize(amount);
Log.e(TAG, String.format("Estimated tx size %d", calcSize));
calculateFee(calcSize);
blockchainRequestsCallbacks.onComplete(true);
}
}
private void calculateFee(int calcSize) {
final double A = 0.155381;
final double B = 0.000043946;
double fee = A + B * calcSize;
Amount feeAmount = new Amount(new BigDecimal(fee).setScale(getDecimals(), RoundingMode.UP), getFeeCurrency());
coinData.minFee = feeAmount;
coinData.normalFee = feeAmount;
coinData.maxFee = feeAmount;
}
private void resolvePayID(String targetAddress, CompletableObserver observer) {
final ServerApiPayId serverApiPayId = new ServerApiPayId();
SingleObserver<PayIdResponse> payIdObserver = new DisposableSingleObserver<PayIdResponse>() {
@Override
public void onSuccess(PayIdResponse payIdResponse) {
try {
String resolvedAddress = null;
for (PayIdAddress address : payIdResponse.getAddresses()) {
if (address.getPaymentNetwork().equals(ctx.getBlockchain().getCurrency()) &&
address.getEnvironment().equals("MAINNET")) {
resolvedAddress = address.getAddressDetails().getAddress();
break;
}
}
if (validateAddress(resolvedAddress)) {
if (!resolvedAddress.equals(coinData.getWallet())) {
coinData.setResolvedPayIdAddress(resolvedAddress);
observer.onComplete();
} else {
observer.onError(new Exception("Resolved PayID address equals source address"));
}
} else {
observer.onError(new Exception("Unknown address format in PayID response"));
}
} catch (Exception e) {
observer.onError(new Exception("Unknown response format on PayID request"));
}
}
@Override
public void onError(Throwable e) {
Log.i(TAG, "onFail: " + "payID" + " " + e.getMessage());
observer.onError(new Exception("PayID error:" + e.getMessage()));
}
};
serverApiPayId.getAddress(targetAddress, ctx.getBlockchain(), payIdObserver);
}
@Override
public void requestSendTransaction(BlockchainRequestsCallbacks blockchainRequestsCallbacks, byte[] txForSend) {
final ServerApiAdalite serverApiAdalite = new ServerApiAdalite();
final String txStr = Base64.encodeToString(txForSend, Base64.NO_WRAP);
// BTCUtils.toHex(txForSend);
final ServerApiAdalite.ResponseListener responseListener = new ServerApiAdalite.ResponseListener() {
@Override
public void onSuccess(String method, AdaliteResponse adaliteResponse) {
Log.e(TAG, "Wrong response type for requestSendTransaction");
ctx.setError("Wrong response type for requestSendTransaction");
}
@Override
public void onSuccess(String method, AdaliteResponseUtxo adaliteResponseUtxo) {
Log.e(TAG, "Wrong response type for requestSendTransaction");
ctx.setError("Wrong response type for requestSendTransaction");
}
@Override
public void onSuccess(String method, String stringResponse) {
ctx.setError(null);
blockchainRequestsCallbacks.onComplete(true);
}
@Override
public void onFail(String method, String message) {
Log.e(TAG, "onFail: " + method + " " + message);
ctx.setError(message);
blockchainRequestsCallbacks.onComplete(false);
}
};
serverApiAdalite.setResponseListener(responseListener);
serverApiAdalite.requestData(ServerApiAdalite.ADALITE_SEND, "", txStr);
}
@Override
public boolean allowSelectFeeLevel() {
return false;
}
@Override
public int pendingTransactionTimeoutInSeconds() {
return 60;
}
private String CalculateTxHash(String tx) throws CborException {
Array txArray = (Array) CborDecoder.decode(BTCUtils.fromHex(tx)).get(0);
DataItem txBodyItem = txArray.getDataItems().get(0);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
new CborEncoder(baos).encode(txBodyItem);
byte[] txBody = baos.toByteArray();
final Blake2b blake2b = Blake2b.Digest.newInstance(32);
return BTCUtils.toHex(blake2b.digest(txBody));
}
}