mirror of https://github.com/hyperledger/besu
Datahash opcode (#4933)
Implements new DATAHASH opcode in EVM Signed-off-by: Justin Florentine <justin+github@florentine.us>pull/4971/head
Justin Florentine
2 years ago
committed by
GitHub
parent
3850d49069
commit
42d67de5b7
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/* |
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* Copyright Hyperledger Besu Contributors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with |
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* the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on |
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the |
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* specific language governing permissions and limitations under the License. |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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package org.hyperledger.besu.evm.operation; |
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import org.hyperledger.besu.datatypes.Hash; |
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import org.hyperledger.besu.evm.EVM; |
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import org.hyperledger.besu.evm.frame.MessageFrame; |
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import org.hyperledger.besu.evm.gascalculator.GasCalculator; |
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import java.util.List; |
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import java.util.Optional; |
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import org.apache.tuweni.bytes.Bytes; |
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public class DataHashOperation extends AbstractOperation { |
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public static final int OPCODE = 0x49; |
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public DataHashOperation(final GasCalculator gasCalculator) { |
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super(OPCODE, "DATAHASH", 1, 1, gasCalculator); |
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} |
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@Override |
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public OperationResult execute(final MessageFrame frame, final EVM evm) { |
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int blobIndex = frame.popStackItem().toInt(); |
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final Optional<List<Hash>> maybeHashes = frame.getVersionedHashes(); |
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if (frame.getVersionedHashes().isPresent()) { |
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List<Hash> versionedHashes = maybeHashes.get(); |
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if (blobIndex < versionedHashes.size()) { |
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Hash requested = versionedHashes.get(blobIndex); |
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frame.pushStackItem(requested); |
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} else { |
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frame.pushStackItem(Bytes.EMPTY); |
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} |
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} else { |
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frame.pushStackItem(Bytes.EMPTY); |
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} |
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return new OperationResult(3, null); |
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} |
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@Override |
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public boolean isVirtualOperation() { |
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return super.isVirtualOperation(); |
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} |
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} |
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@ -0,0 +1,92 @@ |
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/* |
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* Copyright Hyperledger Besu Contributors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with |
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* the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on |
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the |
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* specific language governing permissions and limitations under the License. |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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package org.hyperledger.besu.evm.operations; |
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import static org.assertj.core.api.Assertions.assertThat; |
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import static org.mockito.Mockito.mock; |
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import static org.mockito.Mockito.times; |
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import static org.mockito.Mockito.verify; |
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import static org.mockito.Mockito.when; |
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import org.hyperledger.besu.datatypes.Hash; |
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import org.hyperledger.besu.evm.EVM; |
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import org.hyperledger.besu.evm.frame.MessageFrame; |
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import org.hyperledger.besu.evm.gascalculator.LondonGasCalculator; |
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import org.hyperledger.besu.evm.operation.DataHashOperation; |
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import org.hyperledger.besu.evm.operation.Operation; |
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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 java.util.Optional; |
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import org.apache.tuweni.bytes.Bytes; |
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import org.junit.Test; |
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public class DataHashOperationTest { |
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@Test |
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public void putsHashOnStack() { |
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Hash version0Hash = Hash.fromHexStringLenient("0xcafebabeb0b0facedeadbeef"); |
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List<Hash> versionedHashes = Arrays.asList(version0Hash); |
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DataHashOperation getHash = new DataHashOperation(new LondonGasCalculator()); |
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MessageFrame frame = mock(MessageFrame.class); |
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when(frame.popStackItem()).thenReturn(Bytes.of(0)); |
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when(frame.getVersionedHashes()).thenReturn(Optional.of(versionedHashes)); |
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EVM fakeEVM = mock(EVM.class); |
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Operation.OperationResult r = getHash.execute(frame, fakeEVM); |
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assertThat(r.getGasCost()).isEqualTo(3); |
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assertThat(r.getHaltReason()).isEqualTo(null); |
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verify(frame).pushStackItem(version0Hash); |
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} |
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@Test |
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public void pushesZeroOnBloblessTx() { |
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EVM fakeEVM = mock(EVM.class); |
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DataHashOperation getHash = new DataHashOperation(new LondonGasCalculator()); |
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MessageFrame frame = mock(MessageFrame.class); |
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when(frame.popStackItem()).thenReturn(Bytes.of(0)); |
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when(frame.getVersionedHashes()).thenReturn(Optional.empty()); |
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Operation.OperationResult failed1 = getHash.execute(frame, fakeEVM); |
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assertThat(failed1.getGasCost()).isEqualTo(3); |
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assertThat(failed1.getHaltReason()).isNull(); |
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when(frame.popStackItem()).thenReturn(Bytes.of(0)); |
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when(frame.getVersionedHashes()).thenReturn(Optional.of(new ArrayList<>())); |
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Operation.OperationResult failed2 = getHash.execute(frame, fakeEVM); |
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assertThat(failed2.getGasCost()).isEqualTo(3); |
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assertThat(failed2.getHaltReason()).isNull(); |
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verify(frame, times(2)).pushStackItem(Bytes.EMPTY); |
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} |
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@Test |
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public void pushZeroOnVersionIndexOutOFBounds() { |
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Hash version0Hash = Hash.fromHexStringLenient("0xcafebabeb0b0facedeadbeef"); |
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List<Hash> versionedHashes = Arrays.asList(version0Hash); |
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DataHashOperation getHash = new DataHashOperation(new LondonGasCalculator()); |
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MessageFrame frame = mock(MessageFrame.class); |
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when(frame.popStackItem()).thenReturn(Bytes.of(1)); |
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when(frame.getVersionedHashes()).thenReturn(Optional.of(versionedHashes)); |
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EVM fakeEVM = mock(EVM.class); |
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Operation.OperationResult r = getHash.execute(frame, fakeEVM); |
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assertThat(r.getGasCost()).isEqualTo(3); |
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assertThat(r.getHaltReason()).isNull(); |
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verify(frame).pushStackItem(Bytes.EMPTY); |
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} |
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} |
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