mirror of https://github.com/hyperledger/besu
Spilt Ibft MessageValidator into components (#752)
Moving to IBFT2.1 requires that validation be conducted on the signeddata aspects of a message separately from the 'piggybacked' block. Move Validators to using Messages Signed-off-by: Adrian Sutton <adrian.sutton@consensys.net>pull/2/head
tmohay
6 years ago
committed by
GitHub
parent
562251638e
commit
4a7b9823ad
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/* |
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* Copyright 2018 ConsenSys AG. |
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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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package tech.pegasys.pantheon.consensus.ibft.validation; |
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import tech.pegasys.pantheon.consensus.ibft.ConsensusRoundIdentifier; |
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import tech.pegasys.pantheon.consensus.ibft.IbftContext; |
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import tech.pegasys.pantheon.consensus.ibft.IbftExtraData; |
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import tech.pegasys.pantheon.consensus.ibft.payload.CommitPayload; |
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import tech.pegasys.pantheon.consensus.ibft.payload.Payload; |
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import tech.pegasys.pantheon.consensus.ibft.payload.PreparePayload; |
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import tech.pegasys.pantheon.consensus.ibft.payload.ProposalPayload; |
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import tech.pegasys.pantheon.consensus.ibft.payload.SignedData; |
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import tech.pegasys.pantheon.ethereum.BlockValidator; |
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import tech.pegasys.pantheon.ethereum.BlockValidator.BlockProcessingOutputs; |
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import tech.pegasys.pantheon.ethereum.ProtocolContext; |
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import tech.pegasys.pantheon.ethereum.core.Address; |
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import tech.pegasys.pantheon.ethereum.core.Block; |
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import tech.pegasys.pantheon.ethereum.core.Hash; |
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import tech.pegasys.pantheon.ethereum.core.Util; |
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import tech.pegasys.pantheon.ethereum.mainnet.HeaderValidationMode; |
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import java.util.Collection; |
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import java.util.Optional; |
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import org.apache.logging.log4j.LogManager; |
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import org.apache.logging.log4j.Logger; |
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public class SignedDataValidator { |
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private static final Logger LOG = LogManager.getLogger(); |
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private final Collection<Address> validators; |
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private final Address expectedProposer; |
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private final ConsensusRoundIdentifier roundIdentifier; |
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private final BlockValidator<IbftContext> blockValidator; |
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private final ProtocolContext<IbftContext> protocolContext; |
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private Optional<SignedData<ProposalPayload>> proposal = Optional.empty(); |
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public SignedDataValidator( |
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final Collection<Address> validators, |
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final Address expectedProposer, |
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final ConsensusRoundIdentifier roundIdentifier, |
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final BlockValidator<IbftContext> blockValidator, |
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final ProtocolContext<IbftContext> protocolContext) { |
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this.validators = validators; |
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this.expectedProposer = expectedProposer; |
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this.roundIdentifier = roundIdentifier; |
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this.blockValidator = blockValidator; |
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this.protocolContext = protocolContext; |
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} |
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public boolean addSignedProposalPayload(final SignedData<ProposalPayload> msg) { |
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if (proposal.isPresent()) { |
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return handleSubsequentProposal(proposal.get(), msg); |
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} |
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if (!validateSignedProposalPayload(msg)) { |
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return false; |
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} |
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if (!validateBlockMatchesProposalRound(msg.getPayload())) { |
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return false; |
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} |
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proposal = Optional.of(msg); |
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return true; |
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} |
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private boolean validateSignedProposalPayload(final SignedData<ProposalPayload> msg) { |
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if (!msg.getPayload().getRoundIdentifier().equals(roundIdentifier)) { |
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LOG.info("Invalid Proposal message, does not match current round."); |
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return false; |
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} |
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if (!msg.getAuthor().equals(expectedProposer)) { |
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LOG.info( |
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"Invalid Proposal message, was not created by the proposer expected for the " |
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+ "associated round."); |
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return false; |
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} |
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final Block proposedBlock = msg.getPayload().getBlock(); |
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final Optional<BlockProcessingOutputs> validationResult = |
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blockValidator.validateAndProcessBlock( |
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protocolContext, proposedBlock, HeaderValidationMode.LIGHT, HeaderValidationMode.FULL); |
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if (!validationResult.isPresent()) { |
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LOG.info("Invalid Proposal message, block did not pass validation."); |
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return false; |
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} |
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return true; |
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} |
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private boolean handleSubsequentProposal( |
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final SignedData<ProposalPayload> existingMsg, final SignedData<ProposalPayload> newMsg) { |
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if (!existingMsg.getAuthor().equals(newMsg.getAuthor())) { |
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LOG.debug("Received subsequent invalid Proposal message; sender differs from original."); |
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return false; |
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} |
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final ProposalPayload existingData = existingMsg.getPayload(); |
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final ProposalPayload newData = newMsg.getPayload(); |
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if (!proposalMessagesAreIdentical(existingData, newData)) { |
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LOG.debug("Received subsequent invalid Proposal message; content differs from original."); |
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return false; |
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} |
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return true; |
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} |
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public boolean validatePrepareMessage(final SignedData<PreparePayload> msg) { |
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final String msgType = "Prepare"; |
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if (!isMessageForCurrentRoundFromValidatorAndProposalAvailable(msg, msgType)) { |
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return false; |
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} |
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if (msg.getAuthor().equals(expectedProposer)) { |
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LOG.info("Illegal Prepare message; was sent by the round's proposer."); |
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return false; |
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} |
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return validateDigestMatchesProposal(msg.getPayload().getDigest(), msgType); |
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} |
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public boolean validateCommmitMessage(final SignedData<CommitPayload> msg) { |
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final String msgType = "Commit"; |
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if (!isMessageForCurrentRoundFromValidatorAndProposalAvailable(msg, msgType)) { |
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return false; |
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} |
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final Block proposedBlock = proposal.get().getPayload().getBlock(); |
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final Address commitSealCreator = |
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Util.signatureToAddress(msg.getPayload().getCommitSeal(), proposedBlock.getHash()); |
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if (!commitSealCreator.equals(msg.getAuthor())) { |
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LOG.info("Invalid Commit message. Seal was not created by the message transmitter."); |
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return false; |
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} |
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return validateDigestMatchesProposal(msg.getPayload().getDigest(), msgType); |
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} |
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private boolean isMessageForCurrentRoundFromValidatorAndProposalAvailable( |
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final SignedData<? extends Payload> msg, final String msgType) { |
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if (!msg.getPayload().getRoundIdentifier().equals(roundIdentifier)) { |
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LOG.info("Invalid {} message, does not match current round.", msgType); |
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return false; |
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} |
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if (!validators.contains(msg.getAuthor())) { |
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LOG.info( |
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"Invalid {} message, was not transmitted by a validator for the " + "associated round.", |
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msgType); |
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return false; |
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} |
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if (!proposal.isPresent()) { |
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LOG.info( |
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"Unable to validate {} message. No Proposal exists against which to validate " |
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+ "block digest.", |
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msgType); |
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return false; |
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} |
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return true; |
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} |
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private boolean validateDigestMatchesProposal(final Hash digest, final String msgType) { |
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final Block proposedBlock = proposal.get().getPayload().getBlock(); |
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if (!digest.equals(proposedBlock.getHash())) { |
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LOG.info( |
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"Illegal {} message, digest does not match the block in the Prepare Message.", msgType); |
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return false; |
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} |
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return true; |
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} |
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private boolean proposalMessagesAreIdentical( |
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final ProposalPayload right, final ProposalPayload left) { |
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return right.getBlock().getHash().equals(left.getBlock().getHash()) |
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&& right.getRoundIdentifier().equals(left.getRoundIdentifier()); |
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} |
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private boolean validateBlockMatchesProposalRound(final ProposalPayload payload) { |
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final ConsensusRoundIdentifier msgRound = payload.getRoundIdentifier(); |
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final IbftExtraData extraData = |
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IbftExtraData.decode(payload.getBlock().getHeader().getExtraData()); |
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if (extraData.getRound() != msgRound.getRoundNumber()) { |
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LOG.info("Invalid Proposal message, round number in block does not match that in message."); |
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return false; |
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} |
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return true; |
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} |
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} |
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@ -0,0 +1,266 @@ |
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/* |
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* Copyright 2018 ConsenSys AG. |
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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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package tech.pegasys.pantheon.consensus.ibft.validation; |
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import static java.util.Optional.empty; |
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import static org.assertj.core.api.Assertions.assertThat; |
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import static org.mockito.ArgumentMatchers.any; |
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import static org.mockito.Mockito.mock; |
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import static org.mockito.Mockito.when; |
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import tech.pegasys.pantheon.consensus.ibft.ConsensusRoundIdentifier; |
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import tech.pegasys.pantheon.consensus.ibft.IbftContext; |
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import tech.pegasys.pantheon.consensus.ibft.IbftExtraData; |
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import tech.pegasys.pantheon.consensus.ibft.messagewrappers.Commit; |
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import tech.pegasys.pantheon.consensus.ibft.messagewrappers.Prepare; |
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import tech.pegasys.pantheon.consensus.ibft.messagewrappers.Proposal; |
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import tech.pegasys.pantheon.consensus.ibft.payload.MessageFactory; |
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import tech.pegasys.pantheon.crypto.SECP256K1; |
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import tech.pegasys.pantheon.crypto.SECP256K1.KeyPair; |
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import tech.pegasys.pantheon.ethereum.BlockValidator; |
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import tech.pegasys.pantheon.ethereum.BlockValidator.BlockProcessingOutputs; |
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import tech.pegasys.pantheon.ethereum.ProtocolContext; |
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import tech.pegasys.pantheon.ethereum.chain.MutableBlockchain; |
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import tech.pegasys.pantheon.ethereum.core.Address; |
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import tech.pegasys.pantheon.ethereum.core.Block; |
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import tech.pegasys.pantheon.ethereum.core.BlockHeader; |
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import tech.pegasys.pantheon.ethereum.core.Hash; |
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import tech.pegasys.pantheon.ethereum.core.Util; |
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import tech.pegasys.pantheon.ethereum.worldstate.WorldStateArchive; |
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import tech.pegasys.pantheon.util.bytes.BytesValue; |
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import java.util.Collections; |
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import java.util.List; |
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import java.util.Optional; |
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import com.google.common.collect.Lists; |
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import org.junit.Before; |
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import org.junit.Test; |
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import org.junit.runner.RunWith; |
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import org.mockito.Mock; |
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import org.mockito.junit.MockitoJUnitRunner; |
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@RunWith(MockitoJUnitRunner.class) |
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public class SignedDataValidatorTest { |
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private final KeyPair proposerKey = KeyPair.generate(); |
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private final KeyPair validatorKey = KeyPair.generate(); |
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private final KeyPair nonValidatorKey = KeyPair.generate(); |
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private final MessageFactory proposerMessageFactory = new MessageFactory(proposerKey); |
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private final MessageFactory validatorMessageFactory = new MessageFactory(validatorKey); |
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private final MessageFactory nonValidatorMessageFactory = new MessageFactory(nonValidatorKey); |
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private final List<Address> validators = Lists.newArrayList(); |
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@Mock private BlockValidator<IbftContext> blockValidator; |
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private final BlockHeader parentHeader = mock(BlockHeader.class); |
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private final ConsensusRoundIdentifier roundIdentifier = new ConsensusRoundIdentifier(2, 0); |
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private SignedDataValidator validator; |
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private final Block block = mock(Block.class); |
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@Before |
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public void setup() { |
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validators.add(Util.publicKeyToAddress(proposerKey.getPublicKey())); |
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validators.add(Util.publicKeyToAddress(validatorKey.getPublicKey())); |
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final ProtocolContext<IbftContext> protocolContext = |
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new ProtocolContext<>( |
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mock(MutableBlockchain.class), mock(WorldStateArchive.class), mock(IbftContext.class)); |
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validator = |
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new SignedDataValidator( |
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validators, |
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Util.publicKeyToAddress(proposerKey.getPublicKey()), |
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roundIdentifier, |
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blockValidator, |
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protocolContext); |
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when(block.getHash()).thenReturn(Hash.fromHexStringLenient("1")); |
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when(blockValidator.validateAndProcessBlock(any(), any(), any(), any())) |
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.thenReturn(Optional.of(new BlockProcessingOutputs(null, null))); |
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insertRoundToBlockHeader(0); |
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} |
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private void insertRoundToBlockHeader(final int round) { |
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final IbftExtraData extraData = |
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new IbftExtraData( |
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BytesValue.wrap(new byte[32]), Collections.emptyList(), empty(), round, validators); |
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final BlockHeader header = mock(BlockHeader.class); |
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when(header.getExtraData()).thenReturn(extraData.encode()); |
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when(block.getHeader()).thenReturn(header); |
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} |
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@Test |
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public void receivingAPrepareMessageBeforeProposalFails() { |
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final Prepare prepareMsg = |
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proposerMessageFactory.createSignedPreparePayload(roundIdentifier, Hash.ZERO); |
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assertThat(validator.validatePrepareMessage(prepareMsg.getSignedPayload())).isFalse(); |
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} |
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@Test |
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public void receivingACommitMessageBeforeProposalFails() { |
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final Commit commitMsg = |
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proposerMessageFactory.createSignedCommitPayload( |
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roundIdentifier, Hash.ZERO, SECP256K1.sign(block.getHash(), proposerKey)); |
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assertThat(validator.validateCommmitMessage(commitMsg.getSignedPayload())).isFalse(); |
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} |
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@Test |
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public void receivingProposalMessageFromNonProposerFails() { |
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final Proposal proposalMsg = |
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validatorMessageFactory.createSignedProposalPayload(roundIdentifier, mock(Block.class)); |
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assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isFalse(); |
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} |
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@Test |
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public void receivingProposalMessageWithIllegalBlockFails() { |
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when(blockValidator.validateAndProcessBlock(any(), any(), any(), any())).thenReturn(empty()); |
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final Proposal proposalMsg = |
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proposerMessageFactory.createSignedProposalPayload(roundIdentifier, mock(Block.class)); |
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assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isFalse(); |
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} |
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@Test |
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public void receivingPrepareFromProposerFails() { |
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final Proposal proposalMsg = |
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proposerMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
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final Prepare prepareMsg = |
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proposerMessageFactory.createSignedPreparePayload(roundIdentifier, block.getHash()); |
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assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isTrue(); |
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assertThat(validator.validatePrepareMessage(prepareMsg.getSignedPayload())).isFalse(); |
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} |
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@Test |
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public void receivingPrepareFromNonValidatorFails() { |
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final Proposal proposalMsg = |
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proposerMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
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final Prepare prepareMsg = |
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nonValidatorMessageFactory.createSignedPreparePayload(roundIdentifier, block.getHash()); |
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assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isTrue(); |
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assertThat(validator.validatePrepareMessage(prepareMsg.getSignedPayload())).isFalse(); |
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} |
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@Test |
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public void receivingMessagesWithDifferentRoundIdFromProposalFails() { |
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final Proposal proposalMsg = |
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proposerMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
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final ConsensusRoundIdentifier invalidRoundIdentifier = |
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new ConsensusRoundIdentifier( |
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roundIdentifier.getSequenceNumber(), roundIdentifier.getRoundNumber() + 1); |
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final Prepare prepareMsg = |
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validatorMessageFactory.createSignedPreparePayload(invalidRoundIdentifier, block.getHash()); |
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final Commit commitMsg = |
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validatorMessageFactory.createSignedCommitPayload( |
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invalidRoundIdentifier, block.getHash(), SECP256K1.sign(block.getHash(), proposerKey)); |
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assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isTrue(); |
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assertThat(validator.validatePrepareMessage(prepareMsg.getSignedPayload())).isFalse(); |
||||||
|
assertThat(validator.validateCommmitMessage(commitMsg.getSignedPayload())).isFalse(); |
||||||
|
} |
||||||
|
|
||||||
|
@Test |
||||||
|
public void receivingPrepareNonProposerValidatorWithCorrectRoundIsSuccessful() { |
||||||
|
final Proposal proposalMsg = |
||||||
|
proposerMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
||||||
|
final Prepare prepareMsg = |
||||||
|
validatorMessageFactory.createSignedPreparePayload(roundIdentifier, block.getHash()); |
||||||
|
|
||||||
|
assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isTrue(); |
||||||
|
assertThat(validator.validatePrepareMessage(prepareMsg.getSignedPayload())).isTrue(); |
||||||
|
} |
||||||
|
|
||||||
|
@Test |
||||||
|
public void receivingACommitMessageWithAnInvalidCommitSealFails() { |
||||||
|
final Proposal proposalMsg = |
||||||
|
proposerMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
||||||
|
|
||||||
|
final Commit commitMsg = |
||||||
|
proposerMessageFactory.createSignedCommitPayload( |
||||||
|
roundIdentifier, block.getHash(), SECP256K1.sign(block.getHash(), nonValidatorKey)); |
||||||
|
|
||||||
|
assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isTrue(); |
||||||
|
assertThat(validator.validateCommmitMessage(commitMsg.getSignedPayload())).isFalse(); |
||||||
|
} |
||||||
|
|
||||||
|
@Test |
||||||
|
public void commitMessageContainingValidSealFromValidatorIsSuccessful() { |
||||||
|
final Proposal proposalMsg = |
||||||
|
proposerMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
||||||
|
|
||||||
|
final Commit proposerCommitMsg = |
||||||
|
proposerMessageFactory.createSignedCommitPayload( |
||||||
|
roundIdentifier, block.getHash(), SECP256K1.sign(block.getHash(), proposerKey)); |
||||||
|
|
||||||
|
final Commit validatorCommitMsg = |
||||||
|
validatorMessageFactory.createSignedCommitPayload( |
||||||
|
roundIdentifier, block.getHash(), SECP256K1.sign(block.getHash(), validatorKey)); |
||||||
|
|
||||||
|
assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isTrue(); |
||||||
|
assertThat(validator.validateCommmitMessage(proposerCommitMsg.getSignedPayload())).isTrue(); |
||||||
|
assertThat(validator.validateCommmitMessage(validatorCommitMsg.getSignedPayload())).isTrue(); |
||||||
|
} |
||||||
|
|
||||||
|
@Test |
||||||
|
public void subsequentProposalHasDifferentSenderFails() { |
||||||
|
final Proposal proposalMsg = |
||||||
|
proposerMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
||||||
|
assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isTrue(); |
||||||
|
|
||||||
|
final Proposal secondProposalMsg = |
||||||
|
validatorMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
||||||
|
assertThat(validator.addSignedProposalPayload(secondProposalMsg.getSignedPayload())).isFalse(); |
||||||
|
} |
||||||
|
|
||||||
|
@Test |
||||||
|
public void subsequentProposalHasDifferentContentFails() { |
||||||
|
final Proposal proposalMsg = |
||||||
|
proposerMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
||||||
|
assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isTrue(); |
||||||
|
|
||||||
|
final ConsensusRoundIdentifier newRoundIdentifier = new ConsensusRoundIdentifier(3, 0); |
||||||
|
final Proposal secondProposalMsg = |
||||||
|
proposerMessageFactory.createSignedProposalPayload(newRoundIdentifier, block); |
||||||
|
assertThat(validator.addSignedProposalPayload(secondProposalMsg.getSignedPayload())).isFalse(); |
||||||
|
} |
||||||
|
|
||||||
|
@Test |
||||||
|
public void subsequentProposalHasIdenticalSenderAndContentIsSuccessful() { |
||||||
|
final Proposal proposalMsg = |
||||||
|
proposerMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
||||||
|
assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isTrue(); |
||||||
|
|
||||||
|
final Proposal secondProposalMsg = |
||||||
|
proposerMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
||||||
|
assertThat(validator.addSignedProposalPayload(secondProposalMsg.getSignedPayload())).isTrue(); |
||||||
|
} |
||||||
|
|
||||||
|
@Test |
||||||
|
public void blockRoundMisMatchWithMessageRoundFails() { |
||||||
|
insertRoundToBlockHeader(roundIdentifier.getRoundNumber() + 1); |
||||||
|
|
||||||
|
final Proposal proposalMsg = |
||||||
|
proposerMessageFactory.createSignedProposalPayload(roundIdentifier, block); |
||||||
|
|
||||||
|
assertThat(validator.addSignedProposalPayload(proposalMsg.getSignedPayload())).isFalse(); |
||||||
|
} |
||||||
|
} |
||||||
Loading…
Reference in new issue