GiftedHacker/tangem-app-android-audited
1
0
Fork 0
Code Issues Pull requests Projects Releases 1 Packages Wiki Activity Actions

Updated on 2026-08-14

Browse source
This commit is contained in:
Tangem 2018-10-31 11:17:34 +03:00
parent e122ccd0eb
commit 240b513303
15 changed files with 327 additions and 318 deletions
Download patch file Download diff file Expand all files Collapse all files

126
app/src/main/java/com/tangem/domain/wallet/TokenEngine.java
View file

@ -34,7 +34,7 @@ public class TokenEngine extends CoinEngine {
if (ctx.getCoinData() == null) {
coinData = new TokenData();
ctx.setCoinData(coinData);
} else if (ctx.getCoinData() instanceof BtcData) {
} else if (ctx.getCoinData() instanceof TokenData) {
coinData = (TokenData) ctx.getCoinData();
} else {
throw new Exception("Invalid type of Blockchain data for TokenEngine");
@ -83,7 +83,7 @@ public class TokenEngine extends CoinEngine {
}
@Override
public String getBalanceCurrencyHTML() {
public String getBalanceCurrency() {
String currency = ctx.getCard().getTokenSymbol();
if (Strings.isNullOrEmpty(currency))
return "NoN";
@ -109,7 +109,7 @@ public class TokenEngine extends CoinEngine {
}
@Override
public String getFeeCurrencyHTML() {
public String getFeeCurrency() {
return "ETH";
}
@ -151,7 +151,6 @@ public class TokenEngine extends CoinEngine {
return true;
}
@Override
public boolean isBalanceAlterNotZero() {
if (coinData == null) return false;
if (coinData.getBalanceAlterInInternalUnits() == null) return false;
@ -284,8 +283,19 @@ public class TokenEngine extends CoinEngine {
}
@Override
public boolean checkUnspentTransaction() {
return true;
public boolean isExtractPossible() {
if (!hasBalanceInfo()) {
ctx.setMessage(R.string.cannot_obtain_data_from_blockchain);
} else if (!isBalanceNotZero()) {
ctx.setMessage(R.string.wallet_empty);
} else if (awaitingConfirmation()) {
ctx.setMessage(R.string.please_wait_while_previous);
} else if (!isBalanceAlterNotZero()) {
ctx.setMessage(ctx.getString(R.string.not_enough_eth_for_gas));
} else {
return true;
}
return false;
}
@Override
@ -300,9 +310,7 @@ public class TokenEngine extends CoinEngine {
} else {
return false;
}
}
catch (Exception e)
{
} catch (Exception e) {
e.printStackTrace();
return false;
}
@ -395,8 +403,13 @@ public class TokenEngine extends CoinEngine {
@Override
public String evaluateFeeEquivalent(String fee) {
Amount feeValue = new Amount(fee, getFeeCurrencyHTML());
return feeValue.toEquivalentString(coinData.getRate());
try {
Amount feeValue = new Amount(fee, getFeeCurrency());
return feeValue.toEquivalentString(coinData.getRate());
} catch (Exception e) {
e.printStackTrace();
return "";
}
//
// BigDecimal gweFee = new BigDecimal(fee);
@ -406,41 +419,104 @@ public class TokenEngine extends CoinEngine {
}
@Override
public byte[] sign(String feeValue, String amountValue, boolean IncFee, String toValue, CardProtocol protocol) throws Exception {
public byte[] sign(Amount feeValue, Amount amountValue, boolean IncFee, String targetAddress, CardProtocol protocol) throws Exception {
if (amountValue.getCurrency().equals("ETH")) {
return signETH(feeValue, amountValue, IncFee, targetAddress, protocol);
} else {
return signToken(feeValue, amountValue, IncFee, targetAddress, protocol);
}
}
public byte[] signETH(Amount feeValue, Amount amountValue, boolean IncFee, String targetAddress, CardProtocol protocol) throws Exception {
BigInteger nonceValue = coinData.getConfirmedTXCount();
byte[] pbKey = ctx.getCard().getWalletPublicKey();
boolean flag = (ctx.getCard().getSigningMethod() == TangemCard.SigningMethod.Sign_Hash_Validated_By_Issuer);
Issuer issuer = ctx.getCard().getIssuer();
BigInteger fee = new BigInteger(feeValue, 10);
BigInteger gigaK = BigInteger.valueOf(1000000000L);
BigDecimal amountDecValue = new BigDecimal(amountValue);
BigInteger weiFee = convertToInternalAmount(feeValue).toBigIntegerExact();
BigInteger weiAmount = convertToInternalAmount(amountValue).toBigIntegerExact();
int d = getTokenDecimals();
BigDecimal amountDec = new BigDecimal("10");
amountDec = amountDec.pow(d);
amountDec = amountDecValue.multiply(amountDec);
if (IncFee) {
weiAmount = weiAmount.subtract(weiFee);
}
//amountDec = amountDec.multiply(new BigDecimal("1000000000"));
BigInteger nonce = nonceValue;
BigInteger gasPrice = weiFee.divide(gigaK).divide(BigInteger.valueOf(21000)).multiply(gigaK);
BigInteger gasLimit = BigInteger.valueOf(21000);
Integer chainId = ctx.getBlockchain() == Blockchain.Ethereum ? EthTransaction.ChainEnum.Mainnet.getValue() : EthTransaction.ChainEnum.Rinkeby.getValue();
String to = targetAddress;
if (to.startsWith("0x") || to.startsWith("0X")) {
to = to.substring(2);
}
EthTransaction tx = EthTransaction.create(to, weiAmount, nonce, gasPrice, gasLimit, chainId);
byte[][] hashesForSign = new byte[1][];
byte[] for_hash = tx.getRawHash();
hashesForSign[0] = for_hash;
byte[] signFromCard = null;
try {
signFromCard = protocol.run_SignHashes(PINStorage.getPIN2(), hashesForSign, flag, null, issuer).getTLV(TLV.Tag.TAG_Signature).Value;
// TODO slice signFromCard to hashes.length parts
} catch (Exception ex) {
Log.e("ETH", ex.getMessage());
return null;
}
BigInteger r = new BigInteger(1, Arrays.copyOfRange(signFromCard, 0, 32));
BigInteger s = new BigInteger(1, Arrays.copyOfRange(signFromCard, 32, 64));
s = CryptoUtil.toCanonicalised(s);
boolean f = ECKey.verify(for_hash, new ECKey.ECDSASignature(r, s), pbKey);
if (!f) {
Log.e("ETH-CHECK", "sign Failed.");
}
tx.signature = new ECDSASignatureETH(r, s);
int v = tx.BruteRecoveryID2(tx.signature, for_hash, pbKey);
if (v != 27 && v != 28) {
Log.e("ETH", "invalid v");
return null;
}
tx.signature.v = (byte) v;
Log.e("ETH_v", String.valueOf(v));
byte[] realTX = tx.getEncoded();
return realTX;
}
public byte[] signToken(Amount feeValue, Amount amountValue, boolean IncFee, String targetAddress, CardProtocol protocol) throws Exception {
BigInteger nonceValue = coinData.getConfirmedTXCount();
byte[] pbKey = ctx.getCard().getWalletPublicKey();
boolean flag = (ctx.getCard().getSigningMethod() == TangemCard.SigningMethod.Sign_Hash_Validated_By_Issuer);
Issuer issuer = ctx.getCard().getIssuer();
BigInteger gigaK = BigInteger.valueOf(1000000000L);
BigInteger weiFee = convertToInternalAmount(feeValue).toBigIntegerExact();
InternalAmount amountDec=convertToInternalAmount(amountValue);
BigInteger amount = amountDec.toBigInteger(); //new BigInteger(amountValue, 10);
//amount = amount.subtract(fee);
BigInteger nonce = nonceValue;
BigInteger gasPrice = fee.divide(BigInteger.valueOf(60000));
BigInteger gasPrice = weiFee.divide(gigaK).divide(BigInteger.valueOf(60000)).multiply(gigaK);
BigInteger gasLimit = BigInteger.valueOf(60000);
Integer chainId = EthTransaction.ChainEnum.Mainnet.getValue();
BigInteger amountZero = BigInteger.ZERO;
Long multiplicator = 1000000000L;
gasPrice = gasPrice.multiply(BigInteger.valueOf(multiplicator));
String to = toValue;
String to = targetAddress;
if (to.startsWith("0x") || to.startsWith("0X")) {
to = to.substring(2);