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Updated on 2026-08-14

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Tangem 2018-10-31 11:17:34 +03:00
parent e122ccd0eb
commit 240b513303
15 changed files with 327 additions and 318 deletions
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104
app/src/main/java/com/tangem/domain/wallet/BtcCashEngine.java
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@ -11,6 +11,7 @@ import com.tangem.util.DecimalDigitsInputFilter;
import com.tangem.util.DerEncodingUtil;
import com.tangem.util.FormatUtil;
import com.tangem.util.Util;
import com.tangem.wallet.R;
import java.io.ByteArrayOutputStream;
import java.math.BigDecimal;
@ -55,15 +56,15 @@ public class BtcCashEngine extends CoinEngine {
}
@Override
public boolean awaitingConfirmation(){
if( coinData ==null ) return false;
public boolean awaitingConfirmation() {
if (coinData == null) return false;
return coinData.getBalanceUnconfirmed() != 0;
}
@Override
public String getBalanceHTML() {
Amount balance=getBalance();
if( balance!=null ) {
Amount balance = getBalance();
if (balance != null) {
return balance.toDescriptionString(getDecimals());
} else {
return "";
@ -71,44 +72,48 @@ public class BtcCashEngine extends CoinEngine {
}
@Override
public String getBalanceCurrencyHTML() {
public String getBalanceCurrency() {
return "BTH";
}
@Override
public String getOfflineBalanceHTML() {
InternalAmount offlineInternalAmount = convertToInternalAmount(ctx.getCard().getOfflineBalance());
Amount offlineAmount = convertToAmount(offlineInternalAmount);
return offlineAmount.toDescriptionString(getDecimals());
InternalAmount offlineInternalAmount = convertToInternalAmount(ctx.getCard().getOfflineBalance());
Amount offlineAmount = convertToAmount(offlineInternalAmount);
return offlineAmount.toDescriptionString(getDecimals());
}
@Override
public boolean isBalanceAlterNotZero() {
return true;
}
@Override
public boolean isBalanceNotZero() {
if( coinData ==null ) return false;
if (coinData == null) return false;
if (coinData.getBalanceInInternalUnits() == null) return false;
return coinData.getBalanceInInternalUnits().notZero();
}
@Override
public boolean hasBalanceInfo(){
if( coinData ==null ) return false;
public boolean hasBalanceInfo() {
if (coinData == null) return false;
return coinData.hasBalanceInfo();
}
@Override
public boolean checkUnspentTransaction() throws Exception {
checkBlockchainDataExists();
return coinData.getUnspentTransactions().size() != 0;
public boolean isExtractPossible() {
if (!hasBalanceInfo()) {
ctx.setMessage(R.string.cannot_obtain_data_from_blockchain);
} else if (!isBalanceNotZero()) {
ctx.setMessage(R.string.wallet_empty);
} else if (awaitingConfirmation()) {
ctx.setMessage(R.string.please_wait_while_previous);
} else if (coinData.getUnspentTransactions().size() == 0) {
ctx.setMessage(R.string.please_wait_for_confirmation);
} else {
return true;
}
return false;
}
@Override
public String getFeeCurrencyHTML() {
public String getFeeCurrency() {
return "mBCH";
}
@ -176,12 +181,12 @@ public class BtcCashEngine extends CoinEngine {
@Override
public InputFilter[] getAmountInputFilters() {
return new InputFilter[] { new DecimalDigitsInputFilter(getDecimals()) };
return new InputFilter[]{new DecimalDigitsInputFilter(getDecimals())};
}
@Override
public boolean checkNewTransactionAmount(Amount amount){
if( coinData ==null ) return false;
public boolean checkNewTransactionAmount(Amount amount) {
if (coinData == null) return false;
if (amount.compareTo(convertToAmount(coinData.getBalanceInInternalUnits())) > 0) {
return false;
}
@ -208,10 +213,10 @@ public class BtcCashEngine extends CoinEngine {
if (fee.isZero() || amount.isZero())
return false;
if (isIncludeFee && amount.compareTo(coinData.getBalanceInInternalUnits())>0)
if (isIncludeFee && amount.compareTo(coinData.getBalanceInInternalUnits()) > 0)
return false;
if (!isIncludeFee && amount.add(fee).compareTo(coinData.getBalanceInInternalUnits())>0)
if (!isIncludeFee && amount.add(fee).compareTo(coinData.getBalanceInInternalUnits()) > 0)
return false;
return true;
@ -260,7 +265,7 @@ public class BtcCashEngine extends CoinEngine {
// return;
// }
if ((ctx.getCard().getOfflineBalance() != null) && !coinData.isBalanceReceived() && (ctx.getCard().getRemainingSignatures() == ctx.getCard().getMaxSignatures()) && coinData.getBalanceInInternalUnits().notZero() ) {
if ((ctx.getCard().getOfflineBalance() != null) && !coinData.isBalanceReceived() && (ctx.getCard().getRemainingSignatures() == ctx.getCard().getMaxSignatures()) && coinData.getBalanceInInternalUnits().notZero()) {
balanceValidator.setScore(80);
balanceValidator.setFirstLine("Verified offline balance");
balanceValidator.setSecondLine("Can't obtain balance from blockchain. Restore internet connection to be more confident. ");
@ -291,12 +296,18 @@ public class BtcCashEngine extends CoinEngine {
@Override
public String evaluateFeeEquivalent(String fee) {
return getAmountEquivalentDescriptor(ctx.getCard(), 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 "";
if (coinData == null || !coinData.getAmountEquivalentDescriptionAvailable()) return "";
return getBalance().toEquivalentString(coinData.getRate());
}
@ -337,8 +348,8 @@ public class BtcCashEngine extends CoinEngine {
@Override
public Amount convertToAmount(InternalAmount internalAmount) {
BigDecimal d=internalAmount.divide(new BigDecimal("100000000"));
return new Amount(d, getBalanceCurrencyHTML());
BigDecimal d = internalAmount.divide(new BigDecimal("100000000"));
return new Amount(d, getBalanceCurrency());
}
@Override
@ -348,8 +359,8 @@ public class BtcCashEngine extends CoinEngine {
@Override
public InternalAmount convertToInternalAmount(Amount amount) throws Exception {
BigDecimal d=amount.multiply(new BigDecimal("100000000"));
return new InternalAmount(d, getBalanceCurrencyHTML());
BigDecimal d = amount.multiply(new BigDecimal("100000000"));
return new InternalAmount(d, getBalanceCurrency());
}
@Override
@ -357,7 +368,7 @@ public class BtcCashEngine extends CoinEngine {
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),"Satoshi");
return new InternalAmount(Util.byteArrayToLong(reversed), "Satoshi");
}
@Override
@ -383,28 +394,13 @@ public class BtcCashEngine extends CoinEngine {
// return mCard.getAmountDescription(Double.parseDouble(amount));
// }
public static String getAmountEquivalentDescriptionBTC(Double amount, float rate) {
if ((rate > 0) && (amount > 0)) {
return String.format("≈ USD %.2f", amount * rate);
} else {
return "";
}
}
public String getAmountEquivalentDescriptor(TangemCard card, String value) {
return getAmountEquivalentDescriptionBTC(Double.parseDouble(value), coinData.getRate());
}
@Override
public byte[] sign(String feeValue, String amountValue, boolean IncFee, String toValue, CardProtocol protocol) throws Exception {
public byte[] sign(Amount feeValue, Amount amountValue, boolean IncFee, String targetAddress, CardProtocol protocol) throws Exception {
checkBlockchainDataExists();
String myAddress = ctx.getCard().getWallet();
byte[] pbKey = ctx.getCard().getWalletPublicKeyRar(); //ALWAYS USING COMPRESS KEY
String outputAddress = toValue;
String changeAddress = myAddress;
// Build script for our address
List<BtcData.UnspentTransaction> rawTxList = coinData.getUnspentTransactions();
@ -419,8 +415,8 @@ public class BtcCashEngine extends CoinEngine {
}
long fees = FormatUtil.ConvertStringToLong(feeValue);
long amount = FormatUtil.ConvertStringToLong(amountValue);
long fees = convertToInternalAmount(feeValue).longValueExact();
long amount = convertToInternalAmount(amountValue).longValueExact();
long change = fullAmount - amount;
if (IncFee) {
amount = amount - fees;
@ -435,7 +431,7 @@ public class BtcCashEngine extends CoinEngine {
byte[][] dataForSign = new byte[unspentOutputs.size()][];
for (int i = 0; i < unspentOutputs.size(); ++i) {
byte[] newTX = BTCUtils.buildTXForSign(myAddress, outputAddress, changeAddress, unspentOutputs, i, amount, change);
byte[] newTX = BTCUtils.buildTXForSign(myAddress, targetAddress, myAddress, unspentOutputs, i, amount, change);
byte[] hashData = Util.calculateSHA256(newTX);
byte[] doubleHashData = Util.calculateSHA256(hashData);
@ -474,6 +470,6 @@ public class BtcCashEngine extends CoinEngine {
unspentOutputs.get(i).scriptForBuild = DerEncodingUtil.packSignDerBitcoinCash(r, s, pbKey);
}
return BTCUtils.buildTXForSend(outputAddress, changeAddress, unspentOutputs, amount, change);
return BTCUtils.buildTXForSend(targetAddress, myAddress, unspentOutputs, amount, change);
}
}