Updated on 2026-08-14
This commit is contained in:
Tangem
parent
092eb2dd68
commit
250ceba99f
78 changed files with 229 additions and 247 deletions
358
app/src/main/java/com/tangem/wallet/nftToken/NftTokenEngine.java
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358
app/src/main/java/com/tangem/wallet/nftToken/NftTokenEngine.java
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package com.tangem.wallet.nftToken;
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import android.net.Uri;
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import android.os.Bundle;
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import android.text.InputFilter;
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import android.util.Log;
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import com.tangem.data.Blockchain;
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import com.tangem.data.network.ServerApiInfura;
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import com.tangem.data.network.model.InfuraResponse;
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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.Keccak256;
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import com.tangem.wallet.TangemContext;
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import com.tangem.wallet.eth.EthData;
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import com.tangem.wallet.token.TokenData;
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import com.tangem.card_common.data.TangemCard;
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import com.tangem.card_common.tasks.SignTask;
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import com.tangem.wallet.R;
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import java.math.BigInteger;
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public class NftTokenEngine extends CoinEngine {
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private static final String TAG = NftTokenEngine.class.getSimpleName();
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public TokenData coinData = null;
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public NftTokenEngine(TangemContext ctx) throws Exception {
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super(ctx);
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if (ctx.getCoinData() == null) {
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coinData = new TokenData();
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ctx.setCoinData(coinData);
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} else if (ctx.getCoinData() instanceof TokenData) {
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coinData = (TokenData) ctx.getCoinData();
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} else if (ctx.getCoinData() instanceof EthData) {
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// special case with receive card data substitution from server at the moment
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Bundle B = new Bundle();
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ctx.getCoinData().saveToBundle(B);
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coinData = new TokenData();
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coinData.loadFromBundle(B);
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ctx.setCoinData(coinData);
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} else {
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throw new Exception("Invalid type of Blockchain data for " + this.getClass().getSimpleName());
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}
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}
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public NftTokenEngine() {
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super();
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}
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public Blockchain getBlockchain() {
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return Blockchain.NftToken;
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}
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@Override
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public boolean awaitingConfirmation() {
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return false;
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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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if (isBalanceNotZero()) {
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return "GENUINE";// + getBalanceCurrency();
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} else {
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return "NOT FOUND";
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}
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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 ctx.getCard().getTokenSymbol().substring(4);
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}
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@Override
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public InputFilter[] getAmountInputFilters() {
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return new InputFilter[0];
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}
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@Override
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public String getOfflineBalanceHTML() {
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return ctx.getString(R.string.not_implemented);
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}
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protected String getContractAddress(TangemCard card) {
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return card.getContractAddress();
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}
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public boolean isNeedCheckNode() {
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return false;
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}
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@Override
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public String getBalanceEquivalent() {
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return null;
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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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if (!address.startsWith("0x") && !address.startsWith("0X")) {
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return false;
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}
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if (address.length() != 42) {
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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 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 String calculateAddress(byte[] pkUncompressed) {
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Keccak256 kec = new Keccak256();
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int lenPk = pkUncompressed.length;
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if (lenPk < 2) {
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throw new IllegalArgumentException("Uncompress public key length is invalid");
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}
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byte[] cleanKey = new byte[lenPk - 1];
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for (int i = 0; i < cleanKey.length; ++i) {
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cleanKey[i] = pkUncompressed[i + 1];
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}
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byte[] r = kec.digest(cleanKey);
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byte[] address = new byte[20];
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for (int i = 0; i < 20; ++i) {
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address[i] = r[i + 12];
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}
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return String.format("0x%s", BTCUtils.toHex(address));
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}
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@Override
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public Amount convertToAmount(InternalAmount internalAmount) throws Exception {
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throw new Exception("Not implemented");
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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 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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throw new Exception("Not implemented");
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}
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@Override
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public InternalAmount convertToInternalAmount(byte[] bytes) throws Exception {
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throw new Exception("Not implemented");
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}
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@Override
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public byte[] convertToByteArray(InternalAmount amount) throws Exception {
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throw new Exception("Not implemented");
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}
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@Override
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public CoinData createCoinData() {
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return new TokenData();
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}
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@Override
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public String getUnspentInputsDescription() {
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return "";
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}
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@Override
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public boolean hasBalanceInfo() {
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return coinData != null && coinData.getBalanceInInternalUnits() != null;
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}
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@Override
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public Uri getWalletExplorerUri() {
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return Uri.parse("https://etherscan.io/token/" + getContractAddress(ctx.getCard()) + "?a=" + 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("ethereum:" + ctx.getCoinData().getWallet());
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}
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@Override
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public boolean isExtractPossible() {
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return false;
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}
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@Override
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public boolean checkNewTransactionAmount(Amount amount) {
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return false;
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}
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@Override
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public boolean checkNewTransactionAmountAndFee(Amount amount, Amount fee, Boolean isFeeIncluded) {
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return false;
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}
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@Override
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public boolean validateBalance(BalanceValidator balanceValidator) {
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if (coinData.getBalanceInInternalUnits() == null) {
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balanceValidator.setScore(0);
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balanceValidator.setFirstLine("No connection");
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balanceValidator.setSecondLine("Authenticity cannot be verified. Swipe down to refresh.");
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return false;
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}
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if (coinData.isBalanceReceived()) {
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if (isBalanceNotZero()) {
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balanceValidator.setScore(100);
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balanceValidator.setFirstLine("Verified in blockchain");
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balanceValidator.setSecondLine("");
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} else {
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balanceValidator.setScore(0);
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balanceValidator.setFirstLine("Authenticity was not verified");
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balanceValidator.setSecondLine("");
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}
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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 null;
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}
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@Override
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public String evaluateFeeEquivalent(String fee) {
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return null;
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}
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@Override
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public String getFeeCurrency() {
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return null;
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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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throw new Exception("Not implemented");
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}
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@Override
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public void requestBalanceAndUnspentTransactions(BlockchainRequestsCallbacks blockchainRequestsCallbacks) {
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final ServerApiInfura serverApiInfura = new ServerApiInfura();
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// request requestData listener
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ServerApiInfura.ResponseListener responseListener = new ServerApiInfura.ResponseListener() {
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@Override
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public void onSuccess(String method, InfuraResponse infuraResponse) {
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try {
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if (validateAddress(getContractAddress(ctx.getCard()))) {
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String balanceCap = infuraResponse.getResult();
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balanceCap = balanceCap.substring(2);
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BigInteger l = new BigInteger(balanceCap, 16);
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coinData.setBalanceInInternalUnits(new InternalAmount(l, ctx.getCard().tokenSymbol));
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coinData.setBalanceReceived(true);
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// Log.i("$TAG eth_call", balanceCap)
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} else {
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ctx.setError("Smart contract address not defined");
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}
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} catch (Exception e) {
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e.printStackTrace();
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}
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blockchainRequestsCallbacks.onComplete(!ctx.hasError());
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}
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@Override
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public void onFail(String method, String message) {
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if (!serverApiInfura.isRequestsSequenceCompleted()) {
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ctx.setError(message);
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blockchainRequestsCallbacks.onComplete(false);
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}
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}
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};
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serverApiInfura.setResponseListener(responseListener);
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serverApiInfura.requestData(ServerApiInfura.INFURA_ETH_CALL, 67, coinData.getWallet(), getContractAddress(ctx.getCard()), "");
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}
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@Override
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public void requestFee(BlockchainRequestsCallbacks blockchainRequestsCallbacks, String targetAddress, Amount amount) {
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ServerApiInfura serverApiInfura = new ServerApiInfura();
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// request requestData eth gasPrice listener
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ServerApiInfura.ResponseListener responseListener = new ServerApiInfura.ResponseListener() {
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@Override
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public void onSuccess(String method, InfuraResponse infuraResponse) {
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String gasPrice = infuraResponse.getResult();
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gasPrice = gasPrice.substring(2);
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// rounding gas price to integer gwei
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BigInteger l = new BigInteger(gasPrice, 16);
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Log.i(TAG, "Infura gas price: " + gasPrice + " (" + l.toString() + ")");
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BigInteger m;
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if (!amount.getCurrency().equals(Blockchain.Ethereum.getCurrency()))
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m = BigInteger.valueOf(60000);
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else m = BigInteger.valueOf(21000);
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Log.i(TAG, "fee multiplier: " + m.toString());
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InternalAmount weiMinFee = new InternalAmount(l.multiply(m), "wei");
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InternalAmount weiNormalFee = new InternalAmount(l.multiply(BigInteger.valueOf(12)).divide(BigInteger.valueOf(10)).multiply(m), "wei");
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InternalAmount weiMaxFee = new InternalAmount(l.multiply(BigInteger.valueOf(15)).divide(BigInteger.valueOf(10)).multiply(m), "wei");
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Log.i(TAG, "min fee : " + weiMinFee.toValueString() + " wei");
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Log.i(TAG, "normal fee: " + weiNormalFee.toValueString() + " wei");
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Log.i(TAG, "max fee : " + weiMaxFee.toValueString() + " wei");
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try {
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coinData.minFee = convertToAmount(weiMinFee);
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coinData.normalFee = convertToAmount(weiNormalFee);
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coinData.maxFee = convertToAmount(weiMaxFee);
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Log.i(TAG, "min fee : " + coinData.minFee.toString());
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Log.i(TAG, "normal fee: " + coinData.normalFee.toString());
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Log.i(TAG, "max fee : " + coinData.maxFee.toString());
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} catch (Exception e) {
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e.printStackTrace();
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}
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blockchainRequestsCallbacks.onComplete(true);
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}
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@Override
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public void onFail(String method, String message) {
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ctx.setError(message);
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blockchainRequestsCallbacks.onComplete(false);
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}
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};
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serverApiInfura.setResponseListener(responseListener);
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serverApiInfura.requestData(ServerApiInfura.INFURA_ETH_GAS_PRICE, 67, coinData.getWallet(), "", "");
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}
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@Override
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public void requestSendTransaction(BlockchainRequestsCallbacks blockchainRequestsCallbacks, byte[] txForSend) {
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}
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public boolean isNftToken() {
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return true;
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}
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}
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