Updated on 2026-08-14
This commit is contained in:
Tangem
parent
61ef397705
commit
bae8bd0e6c
30 changed files with 1686 additions and 1276 deletions
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@ -1,105 +1,116 @@
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package com.tangem.domain.wallet;
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import android.net.Uri;
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import android.text.InputFilter;
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import com.tangem.domain.cardReader.CardProtocol;
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import com.tangem.domain.cardReader.TLV;
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import com.tangem.util.BTCUtils;
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import com.tangem.util.CryptoUtil;
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import com.tangem.util.DecimalDigitsInputFilter;
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import com.tangem.util.DerEncodingUtil;
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import com.tangem.util.FormatUtil;
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import com.tangem.util.Util;
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import java.io.ByteArrayOutputStream;
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import java.math.BigDecimal;
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import java.math.BigInteger;
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import java.nio.ByteBuffer;
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import java.security.NoSuchAlgorithmException;
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import java.security.NoSuchProviderException;
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import java.text.DecimalFormat;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import static com.tangem.util.FormatUtil.GetDecimalFormat;
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/**
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* Created by Ilia on 15.02.2018.
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*/
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public class BtcCashEngine extends CoinEngine {
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public String getNode(TangemCard mCard) {
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return "35.157.238.5";
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public BtcData btcData = null;
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public BtcCashEngine(TangemContext context) throws Exception {
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super(context);
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if (context.getCoinData() == null) {
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btcData = new BtcData();
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context.setCoinData(btcData);
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} else if (context.getCoinData() instanceof BtcData) {
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btcData = (BtcData) context.getCoinData();
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} else {
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throw new Exception("Invalid type of Blockchain data for BtcEngine");
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}
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}
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public int getNodePort(TangemCard mCard) {
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return 51001;
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public BtcCashEngine() {
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}
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public void switchNode(TangemCard mCard) {
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private void checkBlockchainDataExists() throws Exception {
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if (btcData == null) throw new Exception("No blockchain data");
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}
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public boolean inOutPutVisible() {
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@Override
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public boolean awaitingConfirmation(){
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if( btcData==null ) return false;
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return btcData.getBalanceUnconfirmed() != 0;
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}
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@Override
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public String getBalanceHTML() {
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if (hasBalanceInfo()) {
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Amount balance = convertToAmount(btcData.getBalanceInInternalUnits());
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return balance.toString();
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} else {
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return "";
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}
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}
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@Override
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public String getBalanceCurrencyHTML() {
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return "mBCH";
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}
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@Override
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public boolean isBalanceAlterNotZero() {
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return true;
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}
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public boolean awaitingConfirmation(TangemCard card) {
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return card.getBalanceUnconfirmed() != 0;
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@Override
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public boolean isBalanceNotZero() {
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if( btcData==null ) return false;
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if (btcData.getBalanceInInternalUnits() == null) return false;
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return btcData.getBalanceInInternalUnits().notZero();
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}
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public String getBalanceWithAlter(TangemCard mCard) {
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return getBalance(mCard);
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}
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public boolean isBalanceAlterNotZero(TangemCard card) {
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return true;
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}
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public Long getBalanceLong(TangemCard mCard) {
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return mCard.getBalance();
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}
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public boolean isBalanceNotZero(TangemCard card) {
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return card.getBalance() > 0;
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}
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public boolean checkAmount(TangemCard card, String amount) throws Exception {
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DecimalFormat decimalFormat = GetDecimalFormat();
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BigDecimal amountValue = (BigDecimal) decimalFormat.parse(amount);
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// Convert Balance to BigDecimal
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BigDecimal maxValue = new BigDecimal(getBalanceValue(card));
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maxValue = maxValue.divide(new BigDecimal(1000));
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//if (use_mCurrency) {
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amountValue = amountValue.divide(new BigDecimal(1000));
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//}
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if (amountValue.compareTo(maxValue) > 0) {
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@Override
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public boolean checkAmount(Amount amount) throws Exception {
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checkBlockchainDataExists();
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if (amount.compareTo(convertToAmount(btcData.getBalanceInInternalUnits())) > 0) {
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return false;
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}
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return true;
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}
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public boolean hasBalanceInfo(TangemCard card) {
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return card.hasBalanceInfo();
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@Override
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public boolean hasBalanceInfo(){
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if( btcData==null ) return false;
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return btcData.hasBalanceInfo();
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}
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public String getBalanceCurrency(TangemCard card) {
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@Override
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public boolean checkUnspentTransaction() throws Exception {
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checkBlockchainDataExists();
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return btcData.getUnspentTransactions().size() != 0;
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}
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@Override
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public String getFeeCurrencyHTML() {
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return "mBCH";
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}
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public boolean checkUnspentTransaction(TangemCard mCard) {
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return mCard.getUnspentTransactions().size() != 0;
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}
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public String getFeeCurrency() {
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return "mBCH";
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}
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public boolean validateAddress(String address, TangemCard card) {
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@Override
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public boolean validateAddress(String address) {
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if (address == null || address.isEmpty()) {
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return false;
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}
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@ -134,44 +145,46 @@ public class BtcCashEngine extends CoinEngine {
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return false;
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}
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if (card.getBlockchain() != Blockchain.BitcoinCashTestNet && card.getBlockchain() != Blockchain.BitcoinCash) {
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if (ctx.getBlockchain() != Blockchain.BitcoinCashTestNet && ctx.getBlockchain() != Blockchain.BitcoinCash) {
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return false;
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}
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if (card.getBlockchain() == Blockchain.BitcoinCashTestNet && (address.startsWith("1") || address.startsWith("3"))) {
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if (ctx.getBlockchain() == Blockchain.BitcoinCashTestNet && (address.startsWith("1") || address.startsWith("3"))) {
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return false;
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}
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return true;
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}
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public int getTokenDecimals(TangemCard card) {
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return 0;
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}
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public String getContractAddress(TangemCard card) {
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return "";
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}
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@Override
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public boolean isNeedCheckNode() {
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return true;
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}
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public Uri getShareWalletUriExplorer(TangemCard mCard) {
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return Uri.parse((mCard.getBlockchain() == Blockchain.BitcoinCash ? "https://bitcoincash.blockexplorer.com/address/" : "https://testnet.blockexplorer.com/address/") + mCard.getWallet());
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@Override
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public Uri getShareWalletUriExplorer() {
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return Uri.parse((ctx.getBlockchain() == Blockchain.BitcoinCash ? "https://bitcoincash.blockexplorer.com/address/" : "https://testnet.blockexplorer.com/address/") + ctx.getCard().getWallet());
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}
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public Uri getShareWalletUri(TangemCard mCard) {
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return Uri.parse("bitcoincash:" + mCard.getWallet());
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@Override
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public Uri getShareWalletUri() {
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return Uri.parse("bitcoincash:" + ctx.getCard().getWallet());
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}
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public boolean checkAmountValue(TangemCard card, String amountValue, String feeValue, Long minFeeInInternalUnits, Boolean incfee) {
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Long fee;
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Long amount;
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@Override
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public InputFilter[] getAmountInputFilters() {
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return new InputFilter[] { new DecimalDigitsInputFilter(8) };
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}
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@Override
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public boolean checkAmountValue(String amountValue, String feeValue, InternalAmount minFeeInInternalUnits, Boolean isIncludeFee) {
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InternalAmount fee;
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InternalAmount amount;
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try {
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amount = card.internalUnitsFromString(amountValue);
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fee = card.internalUnitsFromString(feeValue);
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checkBlockchainDataExists();
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amount = convertToInternalAmount(new Amount(amountValue, ctx.getBlockchain()));
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fee = convertToInternalAmount(new Amount(feeValue, ctx.getBlockchain()));
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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@ -180,64 +193,106 @@ public class BtcCashEngine extends CoinEngine {
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if (fee == null || amount == null)
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return false;
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if (fee == 0 || amount == 0)
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if (fee.isZero() || amount.isZero())
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return false;
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if (incfee && amount > card.getBalance())
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if (isIncludeFee && amount.compareTo(btcData.getBalanceInInternalUnits())>0)
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return false;
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if (!incfee && amount + fee > card.getBalance())
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if (!isIncludeFee && amount.add(fee).compareTo(btcData.getBalanceInInternalUnits())>0)
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return false;
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return true;
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}
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public String evaluateFeeEquivalent(TangemCard mCard, String fee) {
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return getAmountEquivalentDescriptor(mCard, fee);
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@Override
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public boolean validateBalance(BalanceValidator balanceValidator) {
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if (((ctx.getCard().getOfflineBalance() == null) && !ctx.getCoinData().isBalanceReceived()) || (!ctx.getCoinData().isBalanceReceived() && (ctx.getCard().getRemainingSignatures() != ctx.getCard().getMaxSignatures()))) {
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balanceValidator.setScore(0);
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balanceValidator.setFirstLine("Unknown balance");
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balanceValidator.setSecondLine("Balance cannot be verified. Swipe down to refresh.");
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return false;
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}
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// Workaround before new back-end
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// if (card.getRemainingSignatures() == card.getMaxSignatures()) {
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// firstLine = "Verified balance";
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// secondLine = "Balance confirmed in blockchain. ";
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// secondLine += "Verified note identity. ";
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// return;
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// }
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if (btcData.getBalanceUnconfirmed() != 0) {
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balanceValidator.setScore(0);
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balanceValidator.setFirstLine("Transaction in progress");
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balanceValidator.setSecondLine("Wait for confirmation in blockchain");
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return false;
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}
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if (btcData.isBalanceReceived() && btcData.isBalanceEqual()) {
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balanceValidator.setScore(100);
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balanceValidator.setFirstLine("Verified balance");
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balanceValidator.setSecondLine("Balance confirmed in blockchain");
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if (btcData.getBalanceInInternalUnits().isZero()) {
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balanceValidator.setFirstLine("Empty wallet");
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balanceValidator.setSecondLine("");
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}
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}
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// rule 4 TODO: need to check SignedHashed against number of outputs in blockchain
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// if((card.getRemainingSignatures() != card.getMaxSignatures()) && card.getBalance() != 0)
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// {
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// score = 80;
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// firstLine = "Unguaranteed balance";
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// secondLine = "Potential unsent transaction. Redeem immediately if accept. ";
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// return;
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// }
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if ((ctx.getCard().getOfflineBalance() != null) && !btcData.isBalanceReceived() && (ctx.getCard().getRemainingSignatures() == ctx.getCard().getMaxSignatures()) && btcData.getBalanceInInternalUnits().notZero() ) {
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balanceValidator.setScore(80);
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balanceValidator.setFirstLine("Verified offline balance");
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balanceValidator.setSecondLine("Can't obtain balance from blockchain. Restore internet connection to be more confident. ");
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}
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// if(card.getFailedBalanceRequestCounter()!=0) {
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// score -= 5 * card.getFailedBalanceRequestCounter();
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// secondLine += "Not all nodes have returned balance. Swipe down or tap again. ";
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// if(score <= 0)
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// return;
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// }
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//
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// if(card.isBalanceReceived() && !card.isBalanceEqual()) {
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// score = 0;
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// firstLine = "Disputed balance";
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// secondLine += " Cannot obtain trusted balance at the moment. Try to tap and check this banknote later.";
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// return;
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// }
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return true;
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}
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@Override
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public String getBalanceEquivalent(TangemCard mCard) {
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Double balance = Double.NaN;
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try {
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Long val = mCard.getBalance();
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balance = mCard.amountFromInternalUnits(val);
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} catch (Exception ex) {
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mCard.setRate(0);
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}
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return mCard.getAmountEquivalentDescription(balance);
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public Amount getBalance() {
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return convertToAmount(btcData.getBalanceInInternalUnits());
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}
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public String getBalance(TangemCard mCard) {
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if (mCard.hasBalanceInfo()) {
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Double balance = mCard.amountFromInternalUnits(mCard.getBalance());
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return mCard.getAmountDescription(balance);
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} else {
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return "";
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}
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@Override
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public String evaluateFeeEquivalent(String fee) {
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return getAmountEquivalentDescriptor(ctx.getCard(), fee);
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}
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public String getBalanceValue(TangemCard mCard) {
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if (mCard.hasBalanceInfo()) {
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Double balance = mCard.getBalance() / (mCard.getBlockchain().getMultiplier());
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String output = FormatUtil.DoubleToString(balance);
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//String pattern = "#0.000"; // If you like 4 zeros
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//DecimalFormat myFormatter = new DecimalFormat(pattern);
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//String output = myFormatter.format(balance);
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return output;
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//return Double.toString(balance);
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} else {
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return "0";
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}
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@Override
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public String getBalanceEquivalent() {
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if( btcData==null ) return "";
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return btcData.getAmountEquivalentDescription(getBalance());
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}
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public String calculateAddress(TangemCard mCard, byte[] pkUncompressed) throws NoSuchProviderException, NoSuchAlgorithmException {
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@Override
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public String calculateAddress(byte[] pkUncompressed) throws NoSuchProviderException, NoSuchAlgorithmException {
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byte netSelectionByte;
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switch (mCard.getBlockchain()) {
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switch (ctx.getBlockchain()) {
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case BitcoinCash:
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netSelectionByte = (byte) 0x00; //0 - MainNet 0x6f - TestNet
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break;
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@ -266,29 +321,49 @@ public class BtcCashEngine extends CoinEngine {
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BB.put(hash4[3]);
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return org.bitcoinj.core.Base58.encode(BB.array());
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}
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@Override
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public String convertByteArrayToAmount(TangemCard mCard, byte[] bytes) throws Exception {
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public Amount convertToAmount(InternalAmount internalAmount) {
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return null;
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}
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@Override
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public InternalAmount convertToInternalAmount(Amount amount) throws Exception {
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return null;
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}
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@Override
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public InternalAmount convertToInternalAmount(byte[] bytes) {
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if (bytes == null) return null;
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byte[] reversed = new byte[bytes.length];
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for (int i = 0; i < bytes.length; i++) reversed[i] = bytes[bytes.length - i - 1];
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return FormatUtil.DoubleToString(mCard.amountFromInternalUnits(Util.byteArrayToLong(reversed)));
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return new InternalAmount(Util.byteArrayToLong(reversed));
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}
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@Override
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public byte[] convertAmountToByteArray(TangemCard card, String amount) throws Exception {
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byte[] bytes = Util.longToByteArray(card.internalUnitsFromString(amount));
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public byte[] convertToByteArray(InternalAmount internalAmount) throws Exception {
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byte[] bytes = Util.longToByteArray(internalAmount.longValueExact());
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byte[] reversed = new byte[bytes.length];
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for (int i = 0; i < bytes.length; i++) reversed[i] = bytes[bytes.length - i - 1];
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return reversed;
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}
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@Override
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public String getAmountDescription(TangemCard mCard, String amount) throws Exception {
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return mCard.getAmountDescription(Double.parseDouble(amount));
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public CoinData createCoinData() {
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return new BtcData();
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}
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@Override
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public String getUnspentInputsDescription() {
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return btcData.getUnspentInputsDescription();
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}
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// @Override
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// public String getAmountDescription(TangemCard mCard, String amount) throws Exception {
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// return mCard.getAmountDescription(Double.parseDouble(amount));
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// }
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public static String getAmountEquivalentDescriptionBTC(Double amount, float rate) {
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if ((rate > 0) && (amount > 0)) {
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return String.format("≈ USD %.2f", amount * rate);
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@ -298,18 +373,21 @@ public class BtcCashEngine extends CoinEngine {
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}
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public String getAmountEquivalentDescriptor(TangemCard mCard, String value) {
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return getAmountEquivalentDescriptionBTC(Double.parseDouble(value), mCard.getRate());
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return getAmountEquivalentDescriptionBTC(Double.parseDouble(value), btcData.getRate());
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}
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public byte[] sign(String feeValue, String amountValue, boolean IncFee, String toValue, TangemCard mCard, CardProtocol protocol) throws Exception {
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@Override
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public byte[] sign(String feeValue, String amountValue, boolean IncFee, String toValue, CardProtocol protocol) throws Exception {
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String myAddress = mCard.getWallet();
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byte[] pbKey = mCard.getWalletPublicKeyRar(); //ALWAYS USING COMPRESS KEY
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checkBlockchainDataExists();
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String myAddress = ctx.getCard().getWallet();
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byte[] pbKey = ctx.getCard().getWalletPublicKeyRar(); //ALWAYS USING COMPRESS KEY
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String outputAddress = toValue;
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String changeAddress = myAddress;
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// Build script for our address
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List<TangemCard.UnspentTransaction> rawTxList = mCard.getUnspentTransactions();
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List<BtcData.UnspentTransaction> rawTxList = btcData.getUnspentTransactions();
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byte[] outputScriptWeAreAbleToSpend = Transaction.Script.buildOutput(myAddress).bytes;
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// Collect unspent
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@ -345,7 +423,7 @@ public class BtcCashEngine extends CoinEngine {
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unspentOutputs.get(i).bodyDoubleHash = doubleHashData;
|
||||
unspentOutputs.get(i).bodyHash = hashData;
|
||||
|
||||
if (mCard.getSigningMethod() == TangemCard.SigningMethod.Sign_Raw || mCard.getSigningMethod() == TangemCard.SigningMethod.Sign_Raw_Validated_By_Issuer) {
|
||||
if (ctx.getCard().getSigningMethod() == TangemCard.SigningMethod.Sign_Raw || ctx.getCard().getSigningMethod() == TangemCard.SigningMethod.Sign_Raw_Validated_By_Issuer) {
|
||||
dataForSign[i] = newTX;
|
||||
} else {
|
||||
dataForSign[i] = doubleHashData;
|
||||
|
|
@ -353,8 +431,8 @@ public class BtcCashEngine extends CoinEngine {
|
|||
|
||||
}
|
||||
|
||||
byte[] signFromCard = null;
|
||||
if (mCard.getSigningMethod() == TangemCard.SigningMethod.Sign_Raw || mCard.getSigningMethod() == TangemCard.SigningMethod.Sign_Raw_Validated_By_Issuer) {
|
||||
byte[] signFromCard;
|
||||
if (ctx.getCard().getSigningMethod() == TangemCard.SigningMethod.Sign_Raw || ctx.getCard().getSigningMethod() == TangemCard.SigningMethod.Sign_Raw_Validated_By_Issuer) {
|
||||
ByteArrayOutputStream bs = new ByteArrayOutputStream();
|
||||
if (dataForSign.length > 10) throw new Exception("To much hashes in one transaction!");
|
||||
for (int i = 0; i < dataForSign.length; i++) {
|
||||
|
|
@ -364,20 +442,18 @@ public class BtcCashEngine extends CoinEngine {
|
|||
}
|
||||
signFromCard = protocol.run_SignRaw(PINStorage.getPIN2(), bs.toByteArray()).getTLV(TLV.Tag.TAG_Signature).Value;
|
||||
} else {
|
||||
signFromCard = protocol.run_SignHashes(PINStorage.getPIN2(), dataForSign, mCard.getSigningMethod() == TangemCard.SigningMethod.Sign_Hash_Validated_By_Issuer, null, mCard.getIssuer()).getTLV(TLV.Tag.TAG_Signature).Value;
|
||||
signFromCard = protocol.run_SignHashes(PINStorage.getPIN2(), dataForSign, ctx.getCard().getSigningMethod() == TangemCard.SigningMethod.Sign_Hash_Validated_By_Issuer, null, ctx.getCard().getIssuer()).getTLV(TLV.Tag.TAG_Signature).Value;
|
||||
// TODO slice signFromCard to hashes.length parts
|
||||
}
|
||||
|
||||
for (int i = 0; i < unspentOutputs.size(); ++i) {
|
||||
BigInteger r = new BigInteger(1, Arrays.copyOfRange(signFromCard, 0 + i * 64, 32 + i * 64));
|
||||
BigInteger r = new BigInteger(1, Arrays.copyOfRange(signFromCard, i * 64, 32 + i * 64));
|
||||
BigInteger s = new BigInteger(1, Arrays.copyOfRange(signFromCard, 32 + i * 64, 64 + i * 64));
|
||||
s = CryptoUtil.toCanonicalised(s);
|
||||
byte[] encodingSign = DerEncodingUtil.packSignDerBitcoinCash(r, s, pbKey);
|
||||
|
||||
unspentOutputs.get(i).scriptForBuild = encodingSign;
|
||||
unspentOutputs.get(i).scriptForBuild = DerEncodingUtil.packSignDerBitcoinCash(r, s, pbKey);
|
||||
}
|
||||
|
||||
byte[] realTX = BTCUtils.buildTXForSend(outputAddress, changeAddress, unspentOutputs, amount, change);
|
||||
return realTX;
|
||||
return BTCUtils.buildTXForSend(outputAddress, changeAddress, unspentOutputs, amount, change);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue