782 lines
30 KiB
Java
782 lines
30 KiB
Java
package com.tangem.wallet.bch;
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import android.net.Uri;
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import android.text.InputFilter;
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import android.util.Log;
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import com.tangem.App;
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import com.tangem.data.network.ElectrumRequest;
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import com.tangem.data.network.ServerApiElectrum;
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import com.tangem.tangem_card.data.TangemCard;
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import com.tangem.tangem_card.reader.CardProtocol;
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import com.tangem.tangem_card.tasks.SignTask;
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import com.tangem.tangem_card.util.Util;
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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.wallet.BCHUtils;
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import com.tangem.wallet.BTCUtils;
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import com.tangem.wallet.BalanceValidator;
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import com.tangem.wallet.CoinData;
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import com.tangem.wallet.CoinEngine;
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import com.tangem.wallet.R;
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import com.tangem.wallet.TangemContext;
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import com.tangem.wallet.Transaction;
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import com.tangem.wallet.UnspentOutputInfo;
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import com.tangem.wallet.btc.BtcData;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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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.math.RoundingMode;
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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.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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public class BtcCashEngine extends CoinEngine {
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private static final String TAG = BtcCashEngine.class.getSimpleName();
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public BtcData coinData = 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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coinData = new BtcData();
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context.setCoinData(coinData);
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} else if (context.getCoinData() instanceof BtcData) {
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coinData = (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 BtcCashEngine() {
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}
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private static int getDecimals() {
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return 8;
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}
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private void checkBlockchainDataExists() throws Exception {
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if (coinData == null) throw new Exception("No blockchain data");
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}
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@Override
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public boolean awaitingConfirmation() {
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if (coinData == null) return false;
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return coinData.getBalanceUnconfirmed() != 0 || App.pendingTransactionsStorage.hasTransactions(ctx.getCard());
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}
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@Override
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public String getBalanceHTML() {
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Amount balance = getBalance();
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if (balance != null) {
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return balance.toDescriptionString(getDecimals());
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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 getBalanceCurrency() {
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return "BCH";
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}
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@Override
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public boolean isBalanceNotZero() {
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if (coinData == null) return false;
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if (coinData.getBalanceInInternalUnits() == null) return false;
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return coinData.getBalanceInInternalUnits().notZero();
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}
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@Override
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public boolean hasBalanceInfo() {
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if (coinData == null) return false;
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return coinData.hasBalanceInfo();
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}
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@Override
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public boolean isExtractPossible() {
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if (!hasBalanceInfo()) {
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ctx.setMessage(R.string.loaded_wallet_error_obtaining_blockchain_data);
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} else if (!isBalanceNotZero()) {
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ctx.setMessage(R.string.general_wallet_empty);
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} else if (awaitingConfirmation()) {
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ctx.setMessage(R.string.loaded_wallet_message_wait);
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} else if (coinData.getUnspentTransactions().size() == 0) {
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ctx.setMessage(R.string.loaded_wallet_message_refresh);
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} else {
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return true;
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}
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return false;
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}
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@Override
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public String getFeeCurrency() {
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return "BCH";
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}
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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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//
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// if (address.length() < 25) {
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// return false;
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// }
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//
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// if (address.length() > 35) {
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// return false;
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// }
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//
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// if (!address.startsWith("1") && !address.startsWith("2") && !address.startsWith("3") && !address.startsWith("n") && !address.startsWith("m")) {
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// return false;
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// }
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//
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// byte[] decAddress = Base58.decodeBase58(address);
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//
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// if (decAddress == null || decAddress.length == 0) {
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// return false;
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// }
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//
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// byte[] rip = new byte[21];
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// for (int i = 0; i < 21; ++i) {
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// rip[i] = decAddress[i];
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// }
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//
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// byte[] kcv = CryptoUtil.doubleSha256(rip);
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//
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// for (int i = 0; i < 4; ++i) {
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// if (kcv[i] != decAddress[21 + i])
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// return false;
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// }
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//
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// if (ctx.getBlockchain() != Blockchain.BitcoinTestNet && ctx.getBlockchain() != Blockchain.Bitcoin) {
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// return false;
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// }
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//
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// if (ctx.getBlockchain() == Blockchain.BitcoinTestNet && (address.startsWith("1") || address.startsWith("3"))) {
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// return false;
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// }
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//
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// return true;
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return CashAddr.isValidCashAddress(address);
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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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@Override
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public Uri getWalletExplorerUri() {
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return Uri.parse("https://bch.btc.com/" + ctx.getCoinData().getWallet());
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}
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@Override
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public Uri getShareWalletUri() {
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return Uri.parse(ctx.getCoinData().getWallet());
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}
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@Override
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public InputFilter[] getAmountInputFilters() {
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return new InputFilter[]{new DecimalDigitsInputFilter(getDecimals())};
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}
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@Override
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public boolean checkNewTransactionAmount(Amount amount) {
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if (coinData == null) return false;
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if (amount.compareTo(convertToAmount(coinData.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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@Override
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public boolean checkNewTransactionAmountAndFee(Amount amountValue, Amount feeValue, Boolean isIncludeFee) {
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InternalAmount fee;
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InternalAmount amount;
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try {
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checkBlockchainDataExists();
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amount = convertToInternalAmount(amountValue);
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fee = convertToInternalAmount(feeValue);
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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}
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if (fee == null || amount == null)
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return false;
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if (fee.isZero() || amount.isZero())
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return false;
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if (isIncludeFee && (amount.compareTo(coinData.getBalanceInInternalUnits()) > 0 || amount.compareTo(fee) < 0))
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return false;
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if (!isIncludeFee && amount.add(fee).compareTo(coinData.getBalanceInInternalUnits()) > 0)
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return false;
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return true;
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}
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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(R.string.balance_validator_first_line_unknown_balance);
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balanceValidator.setSecondLine(R.string.balance_validator_second_line_unverified_balance);
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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 (coinData.getBalanceUnconfirmed() != 0) {
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balanceValidator.setScore(0);
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balanceValidator.setFirstLine(R.string.balance_validator_first_line_transaction_in_progress);
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balanceValidator.setSecondLine(R.string.balance_validator_second_line_wait_for_confirmation);
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return false;
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}
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if (coinData.isBalanceReceived() && coinData.isBalanceEqual()) {
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balanceValidator.setScore(100);
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balanceValidator.setFirstLine(R.string.balance_validator_first_line_verified_balance);
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balanceValidator.setSecondLine(R.string.balance_validator_second_line_confirmed_in_blockchain);
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if (coinData.getBalanceInInternalUnits().isZero()) {
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balanceValidator.setFirstLine(R.string.balance_validator_first_line_empty_wallet);
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balanceValidator.setSecondLine(R.string.empty_string);
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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) && !coinData.isBalanceReceived() && (ctx.getCard().getRemainingSignatures() == ctx.getCard().getMaxSignatures()) && coinData.getBalanceInInternalUnits().notZero()) {
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balanceValidator.setScore(80);
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balanceValidator.setFirstLine(R.string.balance_validator_first_line_verified_offline);
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balanceValidator.setSecondLine(R.string.balance_validator_second_line_internet_to_get_balance);
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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 Amount getBalance() {
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return convertToAmount(coinData.getBalanceInInternalUnits());
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}
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@Override
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public String evaluateFeeEquivalent(String fee) {
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if (!coinData.getAmountEquivalentDescriptionAvailable()) return "";
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try {
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Amount feeAmount = new Amount(fee, getFeeCurrency());
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return feeAmount.toEquivalentString(coinData.getRate());
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} catch (Exception e) {
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return "";
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}
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}
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@Override
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public String getBalanceEquivalent() {
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if (coinData == null || !coinData.getAmountEquivalentDescriptionAvailable()) return "";
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Amount balance = getBalance();
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if (balance == null) return "";
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return balance.toEquivalentString(coinData.getRate());
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}
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@Override
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public String calculateAddress(byte[] pubKey) throws NoSuchProviderException, NoSuchAlgorithmException {
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// CashAddr format
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byte hash1[] = Util.calculateSHA256(pubKey);
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byte hash2[] = Util.calculateRIPEMD160(hash1);
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return CashAddr.toCashAddress(BitcoinCashAddressType.P2PKH, hash2);
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}
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public String calculateLegacyAddress(byte[] pkUncompressed) throws NoSuchProviderException, NoSuchAlgorithmException {
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// Legacy format (BTC)
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byte netSelectionByte = (byte) 0x00;
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byte hash1[] = Util.calculateSHA256(pkUncompressed);
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byte hash2[] = Util.calculateRIPEMD160(hash1);
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ByteBuffer BB = ByteBuffer.allocate(hash2.length + 1);
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BB.put(netSelectionByte);
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BB.put(hash2);
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byte hash3[] = Util.calculateSHA256(BB.array());
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byte hash4[] = Util.calculateSHA256(hash3);
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BB = ByteBuffer.allocate(hash2.length + 5);
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BB.put(netSelectionByte);
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BB.put(hash2);
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BB.put(hash4[0]);
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BB.put(hash4[1]);
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BB.put(hash4[2]);
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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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public String convertToLegacyAddress(String cashAddr) throws NoSuchProviderException, NoSuchAlgorithmException {
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BitcoinCashAddressDecodedParts bcadp = CashAddr.decodeCashAddress(cashAddr);
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byte netSelectionByte = (byte) 0x00;
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byte hash2[] = bcadp.hash;
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ByteBuffer BB = ByteBuffer.allocate(hash2.length + 1);
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BB.put(netSelectionByte);
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BB.put(hash2);
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byte hash3[] = Util.calculateSHA256(BB.array());
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byte hash4[] = Util.calculateSHA256(hash3);
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BB = ByteBuffer.allocate(hash2.length + 5);
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BB.put(netSelectionByte);
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BB.put(hash2);
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BB.put(hash4[0]);
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BB.put(hash4[1]);
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BB.put(hash4[2]);
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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 Amount convertToAmount(InternalAmount internalAmount) {
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BigDecimal d = internalAmount.divide(new BigDecimal("100000000"));
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return new Amount(d, getBalanceCurrency());
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}
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@Override
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public Amount convertToAmount(String strAmount, String currency) {
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return new Amount(strAmount, currency);
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}
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@Override
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public InternalAmount convertToInternalAmount(Amount amount) throws Exception {
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BigDecimal d = amount.multiply(new BigDecimal("100000000"));
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return new InternalAmount(d, getBalanceCurrency());
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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 new InternalAmount(Util.byteArrayToLong(reversed), "Satoshi");
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}
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@Override
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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 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 coinData.getUnspentInputsDescription();
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}
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@Override
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public void defineWallet() throws CardProtocol.TangemException {
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try {
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String wallet = calculateAddress(ctx.getCard().getWalletPublicKeyRar());
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ctx.getCoinData().setWallet(wallet);
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}
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catch (Exception e)
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{
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ctx.getCoinData().setWallet("ERROR");
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throw new CardProtocol.TangemException("Can't define wallet address");
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}
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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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@Override
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public SignTask.TransactionToSign constructTransaction(Amount amountValue, Amount feeValue, boolean IncFee, String targetAddress) throws Exception {
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checkBlockchainDataExists();
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String srcLegacyAddress = convertToLegacyAddress(ctx.getCoinData().getWallet());
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String destLegacyAddress = convertToLegacyAddress(targetAddress);
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byte[] pbKey = ctx.getCard().getWalletPublicKeyRar(); //ALWAYS USING COMPRESS KEY
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// Build script for our address
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List<BtcData.UnspentTransaction> rawTxList = coinData.getUnspentTransactions();
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byte[] outputScriptWeAreAbleToSpend = Transaction.Script.buildOutput(srcLegacyAddress).bytes;
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// Collect unspent
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ArrayList<UnspentOutputInfo> unspentOutputs = BCHUtils.getOutputs(rawTxList, outputScriptWeAreAbleToSpend);
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long fullAmount = 0;
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for (int i = 0; i < unspentOutputs.size(); ++i) {
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fullAmount += unspentOutputs.get(i).value;
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}
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long fees = convertToInternalAmount(feeValue).longValueExact();
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long amount = convertToInternalAmount(amountValue).longValueExact();
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long change = fullAmount - amount;
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if (IncFee) {
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amount = amount - fees;
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} else {
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change = change - fees;
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}
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if (amount + fees > fullAmount) {
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throw new CardProtocol.TangemException_WrongAmount(String.format("Balance (%d) < change (%d) + amount (%d)", fullAmount, change, amount));
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}
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final long amountFinal = amount;
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final long changeFinal = change;
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byte[][] txForSign = new byte[unspentOutputs.size()][];
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byte[][] bodyHash = new byte[unspentOutputs.size()][];
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byte[][] bodyDoubleHash = new byte[unspentOutputs.size()][];
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for (int i = 0; i < unspentOutputs.size(); ++i) {
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txForSign[i] = BCHUtils.buildTXForSign(srcLegacyAddress, destLegacyAddress, srcLegacyAddress, unspentOutputs, i, amount, change);
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bodyHash[i] = Util.calculateSHA256(txForSign[i]);
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bodyDoubleHash[i] = Util.calculateSHA256(bodyHash[i]);
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}
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return new SignTask.TransactionToSign() {
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@Override
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public boolean isSigningMethodSupported(TangemCard.SigningMethod signingMethod) {
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return signingMethod == TangemCard.SigningMethod.Sign_Hash || signingMethod == TangemCard.SigningMethod.Sign_Raw;
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}
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@Override
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public byte[][] getHashesToSign() throws Exception {
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byte[][] dataForSign = new byte[unspentOutputs.size()][];
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if (txForSign.length > 10) throw new Exception("To much hashes in one transaction!");
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|
for (int i = 0; i < unspentOutputs.size(); ++i) {
|
|
dataForSign[i] = bodyDoubleHash[i];
|
|
}
|
|
return dataForSign;
|
|
}
|
|
|
|
@Override
|
|
public byte[] getRawDataToSign() throws Exception {
|
|
ByteArrayOutputStream bs = new ByteArrayOutputStream();
|
|
for (int i = 0; i < txForSign.length; i++) {
|
|
if (i != 0 && txForSign[0].length != txForSign[i].length)
|
|
throw new Exception("Hashes length must be identical!");
|
|
bs.write(txForSign[i]);
|
|
}
|
|
|
|
return bs.toByteArray();
|
|
}
|
|
|
|
@Override
|
|
public String getHashAlgToSign() {
|
|
return "sha-256x2";
|
|
}
|
|
|
|
@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 {
|
|
for (int i = 0; i < unspentOutputs.size(); ++i) {
|
|
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);
|
|
|
|
unspentOutputs.get(i).scriptForBuild = DerEncodingUtil.packSignDerBitcoinCash(r, s, pbKey);
|
|
}
|
|
|
|
byte[] txForSend = BCHUtils.buildTXForSend(destLegacyAddress, srcLegacyAddress, unspentOutputs, amountFinal, changeFinal);
|
|
|
|
notifyOnNeedSendTransaction(txForSend);
|
|
return txForSend;
|
|
}
|
|
};
|
|
}
|
|
|
|
@Override
|
|
public void requestBalanceAndUnspentTransactions(BlockchainRequestsCallbacks blockchainRequestsCallbacks) throws Exception {
|
|
final ServerApiElectrum serverApiElectrum = new ServerApiElectrum();
|
|
|
|
ServerApiElectrum.ResponseListener electrumBodyListener = new ServerApiElectrum.ResponseListener() {
|
|
@Override
|
|
public void onSuccess(ElectrumRequest electrumRequest) {
|
|
if (electrumRequest.isMethod(ElectrumRequest.METHOD_GetBalance)) {
|
|
try {
|
|
Long confBalance = electrumRequest.getResult().getLong("confirmed");
|
|
Long unconfirmedBalance = electrumRequest.getResult().getLong("unconfirmed");
|
|
coinData.setBalanceReceived(true);
|
|
coinData.setBalanceConfirmed(confBalance);
|
|
coinData.setBalanceUnconfirmed(unconfirmedBalance);
|
|
coinData.setValidationNodeDescription(serverApiElectrum.getValidationNodeDescription());
|
|
} catch (JSONException e) {
|
|
e.printStackTrace();
|
|
Log.e(TAG, "FAIL METHOD_GetBalance JSONException");
|
|
} catch (Exception e) {
|
|
e.printStackTrace();
|
|
Log.e(TAG, "FAIL METHOD_GetBalance Exception");
|
|
}
|
|
}
|
|
|
|
if (electrumRequest.isMethod(ElectrumRequest.METHOD_ListUnspent)) {
|
|
try {
|
|
String walletAddress = electrumRequest.getParams().getString(0);
|
|
JSONArray jsUnspentArray = electrumRequest.getResultArray();
|
|
try {
|
|
coinData.getUnspentTransactions().clear();
|
|
for (int i = 0; i < jsUnspentArray.length(); i++) {
|
|
JSONObject jsUnspent = jsUnspentArray.getJSONObject(i);
|
|
BtcData.UnspentTransaction trUnspent = new BtcData.UnspentTransaction();
|
|
trUnspent.txID = jsUnspent.getString("tx_hash");
|
|
trUnspent.amount = jsUnspent.getLong("value");
|
|
trUnspent.outputN = jsUnspent.getInt("height");
|
|
coinData.getUnspentTransactions().add(trUnspent);
|
|
}
|
|
} catch (JSONException e) {
|
|
e.printStackTrace();
|
|
Log.e(TAG, "FAIL METHOD_ListUnspent JSONException");
|
|
}
|
|
|
|
for (int i = 0; i < jsUnspentArray.length(); i++) {
|
|
JSONObject jsUnspent = jsUnspentArray.getJSONObject(i);
|
|
Integer height = jsUnspent.getInt("height");
|
|
String hash = jsUnspent.getString("tx_hash");
|
|
if (height != -1) {
|
|
if (blockchainRequestsCallbacks.allowAdvance()) {
|
|
serverApiElectrum.requestData(ctx, ElectrumRequest.getTransaction(walletAddress, hash));
|
|
} else {
|
|
ctx.setError("Terminated by user");
|
|
}
|
|
}
|
|
}
|
|
} catch (JSONException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
|
|
if (electrumRequest.isMethod(ElectrumRequest.METHOD_GetTransaction)) {
|
|
try {
|
|
String txHash = electrumRequest.txHash;
|
|
String raw = electrumRequest.getResultString();
|
|
for (BtcData.UnspentTransaction tx : coinData.getUnspentTransactions()) {
|
|
if (tx.txID.equals(txHash))
|
|
tx.script = raw;
|
|
}
|
|
} catch (JSONException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
|
|
if (serverApiElectrum.isRequestsSequenceCompleted()) {
|
|
blockchainRequestsCallbacks.onComplete(!ctx.hasError());
|
|
}else{
|
|
blockchainRequestsCallbacks.onProgress();
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onFail(ElectrumRequest electrumRequest) {
|
|
Log.i(TAG, "onFail: "+electrumRequest.getMethod()+" "+electrumRequest.getError());
|
|
ctx.setError(electrumRequest.getError());
|
|
if (serverApiElectrum.isRequestsSequenceCompleted()) {
|
|
blockchainRequestsCallbacks.onComplete(false);//serverApiElectrum.isErrorOccurred(), serverApiElectrum.getError());
|
|
}else{
|
|
blockchainRequestsCallbacks.onProgress();
|
|
}
|
|
}
|
|
};
|
|
|
|
serverApiElectrum.setResponseListener(electrumBodyListener);
|
|
|
|
serverApiElectrum.requestData(ctx, ElectrumRequest.checkBalance(convertToLegacyAddress(coinData.getWallet())));
|
|
serverApiElectrum.requestData(ctx, ElectrumRequest.listUnspent(convertToLegacyAddress(coinData.getWallet())));
|
|
}
|
|
|
|
private Integer calculateEstimatedTransactionSize(String outputAddress, String outAmount) {
|
|
try {
|
|
SignTask.TransactionToSign ps= constructTransaction(new Amount(outAmount, getBalanceCurrency()),new Amount("0.00",getFeeCurrency()), true, outputAddress );
|
|
OnNeedSendTransaction onNeedSendTransactionBackup = onNeedSendTransaction;
|
|
onNeedSendTransaction =(tx)->{}; // empty function to bypass exception
|
|
|
|
byte[][] hashesToSign=ps.getHashesToSign();
|
|
byte[] signFromCard = new byte[64 * hashesToSign.length];
|
|
Arrays.fill(signFromCard, (byte) 0x01);
|
|
byte[] txForSend=ps.onSignCompleted(signFromCard);
|
|
onNeedSendTransaction = onNeedSendTransactionBackup;
|
|
Log.e(TAG,"txForSend.length="+String.valueOf(txForSend.length));
|
|
return txForSend.length +1;
|
|
} catch (Exception e) {
|
|
e.printStackTrace();
|
|
Log.e(TAG, "Can't calculate transaction size -> use default!");
|
|
return 256;
|
|
}
|
|
}
|
|
|
|
private final static BigDecimal relayFee = new BigDecimal(0.00001);
|
|
|
|
@Override
|
|
public void requestFee(BlockchainRequestsCallbacks blockchainRequestsCallbacks, String targetAddress, Amount amount) throws Exception {
|
|
final int calcSize = calculateEstimatedTransactionSize(targetAddress, amount.toValueString());
|
|
Log.e(TAG, String.format("Estimated tx size %d", calcSize));
|
|
coinData.minFee=null;
|
|
coinData.maxFee=null;
|
|
coinData.normalFee=null;
|
|
|
|
final ServerApiElectrum serverApiElectrum = new ServerApiElectrum();
|
|
|
|
final ServerApiElectrum.ResponseListener electrumListener = new ServerApiElectrum.ResponseListener() {
|
|
@Override
|
|
public void onSuccess(ElectrumRequest electrumRequest) {
|
|
BigDecimal fee;
|
|
if (electrumRequest.isMethod(ElectrumRequest.METHOD_GetFee)) {
|
|
try {
|
|
fee = new BigDecimal(electrumRequest.getResultString()); //fee per KB
|
|
|
|
if (fee.equals(BigDecimal.ZERO)) {
|
|
serverApiElectrum.requestData(ctx, ElectrumRequest.getFee());
|
|
}
|
|
|
|
// if (calcSize != 0) {
|
|
fee = fee.multiply(new BigDecimal(calcSize)).divide(new BigDecimal(1024)); // (per KB -> per byte)*size
|
|
// } else {
|
|
// serverApiElectrum.requestData(ctx, ElectrumRequest.getFee());
|
|
// }
|
|
|
|
//compare fee to usual relay fee
|
|
if (fee.compareTo(relayFee) < 0) {
|
|
fee = relayFee;
|
|
}
|
|
fee = fee.setScale(8, RoundingMode.DOWN);
|
|
|
|
CoinEngine.Amount feeAmount = new CoinEngine.Amount(fee, ctx.getBlockchain().getCurrency());
|
|
coinData.minFee = feeAmount;
|
|
coinData.normalFee = feeAmount;
|
|
coinData.maxFee = feeAmount;
|
|
// if (coinData.minFee != null && coinData.normalFee != null && coinData.maxFee != null) {
|
|
blockchainRequestsCallbacks.onComplete(true);
|
|
// } else {
|
|
// blockchainRequestsCallbacks.onProgress();
|
|
// }
|
|
|
|
} catch (JSONException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onFail(ElectrumRequest electrumRequest) {
|
|
ctx.setError(electrumRequest.getError());
|
|
blockchainRequestsCallbacks.onComplete(false);
|
|
}
|
|
};
|
|
serverApiElectrum.setResponseListener(electrumListener);
|
|
|
|
serverApiElectrum.requestData(ctx, ElectrumRequest.getFee());
|
|
}
|
|
|
|
@Override
|
|
public void requestSendTransaction(BlockchainRequestsCallbacks blockchainRequestsCallbacks, byte[] txForSend) throws Exception {
|
|
final ServerApiElectrum serverApiElectrum = new ServerApiElectrum();
|
|
final String txStr = BTCUtils.toHex(txForSend);
|
|
|
|
ServerApiElectrum.ResponseListener electrumBodyListener = new ServerApiElectrum.ResponseListener() {
|
|
@Override
|
|
public void onSuccess(ElectrumRequest electrumRequest) {
|
|
if (electrumRequest.isMethod(ElectrumRequest.METHOD_SendTransaction)) {
|
|
try {
|
|
String resultString = electrumRequest.getResultString();
|
|
if (resultString == null || resultString.isEmpty()) {
|
|
ctx.setError("Rejected by node: " + electrumRequest.getError());
|
|
blockchainRequestsCallbacks.onComplete(false);
|
|
}else {
|
|
ctx.setError(null);
|
|
blockchainRequestsCallbacks.onComplete(true);
|
|
}
|
|
} catch (Exception e) {
|
|
if (e.getMessage() != null) {
|
|
ctx.setError(e.getMessage());
|
|
blockchainRequestsCallbacks.onComplete(false);
|
|
} else {
|
|
ctx.setError(e.getClass().getName());
|
|
blockchainRequestsCallbacks.onComplete(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onFail(ElectrumRequest electrumRequest) {
|
|
ctx.setError(electrumRequest.getError());
|
|
blockchainRequestsCallbacks.onComplete(false);
|
|
}
|
|
};
|
|
serverApiElectrum.setResponseListener(electrumBodyListener);
|
|
|
|
|
|
serverApiElectrum.requestData(ctx, ElectrumRequest.broadcast(ctx.getCoinData().getWallet(), txStr));
|
|
|
|
}
|
|
|
|
@Override
|
|
public boolean allowSelectFeeLevel() {
|
|
return false;
|
|
}
|
|
}
|