Coverage Summary for Class: TxValidatorNonceRangeValidator (co.rsk.net.handler.txvalidator)
Class |
Class, %
|
Method, %
|
Line, %
|
TxValidatorNonceRangeValidator |
100%
(1/1)
|
100%
(2/2)
|
83.3%
(10/12)
|
1 /*
2 * This file is part of RskJ
3 * Copyright (C) 2017 RSK Labs Ltd.
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 package co.rsk.net.handler.txvalidator;
20
21 import co.rsk.core.Coin;
22 import co.rsk.net.TransactionValidationResult;
23 import org.ethereum.core.AccountState;
24 import org.ethereum.core.Transaction;
25
26 import javax.annotation.Nullable;
27 import java.math.BigInteger;
28
29 /**
30 * Checks that the transaction nonce is not too higher than the account
31 * nonce. This helps limiting the in memory transactions for a given address
32 */
33 public class TxValidatorNonceRangeValidator implements TxValidatorStep {
34
35 private final BigInteger accountSlots;
36
37 public TxValidatorNonceRangeValidator(int accountSlots) {
38 if (accountSlots < 1) {
39 throw new IllegalArgumentException("accountSlots");
40 }
41 this.accountSlots = BigInteger.valueOf(accountSlots);
42 }
43
44 @Override
45 public TransactionValidationResult validate(Transaction tx, @Nullable AccountState state, BigInteger gasLimit, Coin minimumGasPrice, long bestBlockNumber, boolean isFreeTx) {
46 BigInteger nonce = tx.getNonceAsInteger();
47 BigInteger stateNonce = state == null ? BigInteger.ZERO : state.getNonce();
48
49 if (stateNonce.compareTo(nonce) > 0) {
50 return TransactionValidationResult.withError("transaction nonce too low");
51 }
52 if (stateNonce.add(accountSlots).compareTo(nonce) <= 0) {
53 return TransactionValidationResult.withError("transaction nonce too high");
54 }
55
56 return TransactionValidationResult.ok();
57 }
58
59 }