org.bitcoinj.core.Transaction.verify()方法的使用及代码示例

x33g5p2x  于2022-01-30 转载在 其他  
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本文整理了Java中org.bitcoinj.core.Transaction.verify()方法的一些代码示例，展示了Transaction.verify()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Transaction.verify()方法的具体详情如下：
包路径：org.bitcoinj.core.Transaction
类名称：Transaction
方法名：verify

Transaction.verify介绍

[英]Checks the transaction contents for sanity, in ways that can be done in a standalone manner. Does not perform all checks on a transaction such as whether the inputs are already spent. Specifically this method verifies:

  • That there is at least one input and output.
  • That the serialized size is not larger than the max block size.
  • That no outputs have negative value.
  • That the outputs do not sum to larger than the max allowed quantity of coin in the system.
  • If the tx is a coinbase tx, the coinbase scriptSig size is within range. Otherwise that there are no coinbase inputs in the tx.
    [中]以独立方式检查事务内容的健全性。不会对事务执行所有检查，例如输入是否已使用。具体而言，该方法验证：
    *至少有一个输入和输出。
    *序列化大小不大于最大块大小。
    *没有任何输出具有负值。
    *输出的总和不超过系统中允许的最大硬币数量。
    *如果tx是coinbase tx，则coinbase scriptSig大小在范围内。否则，tx中没有coinbase输入。

代码示例

代码示例来源：origin: HashEngineering/dashj

public void receiveLock(Transaction tx) throws VerificationException {
  // Can run in a peer thread. This method will only be called if a prior call to isPendingTransactionLockRelevant
  // returned true, so we already know by this point that it sends coins to or from our wallet, or is a double
  // spend against one of our other pending transactions.
  lock.lock();
  try {
    tx.verify();
    Transaction lockedTx = pending.get(tx.getHash());
    //lockedTx.getConfidence().setConfidenceType(ConfidenceType.INSTANTX_LOCKED);
    confidenceChanged.put(lockedTx, TransactionConfidence.Listener.ChangeReason.TYPE);
    //TODO:  this is causing problems later, the transaction doesn't get setAppearedInBlock, etc, Wallet crashes.
    //unspent.put(lockedTx.getHash(), lockedTx);
    //pending.remove(lockedTx);
  } finally {
    lock.unlock();
  }
  // maybeRotateKeys() will ignore pending transactions so we don't bother calling it here (see the comments
  // in that function for an explanation of why).
}

代码示例来源：origin: cash.bitcoinj/bitcoinj-core

/**
 * Returns true if the tx is a valid settlement transaction.
 */
public synchronized boolean isSettlementTransaction(Transaction tx) {
  try {
    tx.verify();
    tx.getInput(0).verify(getContractInternal().getOutput(0));
    return true;
  } catch (VerificationException e) {
    return false;
  }
}

代码示例来源：origin: greenaddress/GreenBits

/**
 * Returns true if the tx is a valid settlement transaction.
 */
public synchronized boolean isSettlementTransaction(Transaction tx) {
  try {
    tx.verify();
    tx.getInput(0).verify(getContractInternal().getOutput(0));
    return true;
  } catch (VerificationException e) {
    return false;
  }
}

代码示例来源：origin: fr.acinq/bitcoinj-core

/**
 * Returns true if the tx is a valid settlement transaction.
 */
public synchronized boolean isSettlementTransaction(Transaction tx) {
  try {
    tx.verify();
    tx.getInput(0).verify(getContractInternal().getOutput(0));
    return true;
  } catch (VerificationException e) {
    return false;
  }
}

代码示例来源：origin: HashEngineering/dashj

/**
 * Returns true if the tx is a valid settlement transaction.
 */
public synchronized boolean isSettlementTransaction(Transaction tx) {
  try {
    tx.verify();
    tx.getInput(0).verify(getContractInternal().getOutput(0));
    return true;
  } catch (VerificationException e) {
    return false;
  }
}

代码示例来源：origin: cash.bitcoinj/bitcoinj-core

/**
 * Create a payment message. This wraps up transaction data along with anything else useful for making a payment.
 * 
 * @param transactions transactions to include with the payment message
 * @param refundOutputs list of outputs to refund coins to, or null
 * @param memo arbitrary, user readable memo, or null if none
 * @param merchantData arbitrary merchant data, or null if none
 * @return created payment message
 */
public static Protos.Payment createPaymentMessage(List<Transaction> transactions,
    @Nullable List<Protos.Output> refundOutputs, @Nullable String memo, @Nullable byte[] merchantData) {
  Protos.Payment.Builder builder = Protos.Payment.newBuilder();
  for (Transaction transaction : transactions) {
    transaction.verify();
    builder.addTransactions(ByteString.copyFrom(transaction.unsafeBitcoinSerialize()));
  }
  if (refundOutputs != null) {
    for (Protos.Output output : refundOutputs)
      builder.addRefundTo(output);
  }
  if (memo != null)
    builder.setMemo(memo);
  if (merchantData != null)
    builder.setMerchantData(ByteString.copyFrom(merchantData));
  return builder.build();
}

代码示例来源：origin: greenaddress/GreenBits

/**
 * Create a payment message. This wraps up transaction data along with anything else useful for making a payment.
 * 
 * @param transactions transactions to include with the payment message
 * @param refundOutputs list of outputs to refund coins to, or null
 * @param memo arbitrary, user readable memo, or null if none
 * @param merchantData arbitrary merchant data, or null if none
 * @return created payment message
 */
public static Protos.Payment createPaymentMessage(List<Transaction> transactions,
    @Nullable List<Protos.Output> refundOutputs, @Nullable String memo, @Nullable byte[] merchantData) {
  Protos.Payment.Builder builder = Protos.Payment.newBuilder();
  for (Transaction transaction : transactions) {
    transaction.verify();
    builder.addTransactions(ByteString.copyFrom(transaction.unsafeBitcoinSerialize()));
  }
  if (refundOutputs != null) {
    for (Protos.Output output : refundOutputs)
      builder.addRefundTo(output);
  }
  if (memo != null)
    builder.setMemo(memo);
  if (merchantData != null)
    builder.setMerchantData(ByteString.copyFrom(merchantData));
  return builder.build();
}

代码示例来源：origin: greenaddress/GreenBits

@Test(expected = VerificationException.EmptyInputsOrOutputs.class)
public void emptyOutputs() throws Exception {
  tx.clearOutputs();
  tx.verify();
}

代码示例来源：origin: greenaddress/GreenBits

@Test(expected = VerificationException.EmptyInputsOrOutputs.class)
public void emptyInputs() throws Exception {
  tx.clearInputs();
  tx.verify();
}

代码示例来源：origin: fr.acinq/bitcoinj-core

/**
 * Checks the block contents
 *
 * @param height block height, if known, or -1 otherwise. If valid, used
 * to validate the coinbase input script of v2 and above blocks.
 * @param flags flags to indicate which tests should be applied (i.e.
 * whether to test for height in the coinbase transaction).
 * @throws VerificationException if there was an error verifying the block.
 */
public void verifyTransactions(final int height, final EnumSet<VerifyFlag> flags) throws VerificationException {
  // Now we need to check that the body of the block actually matches the headers. The network won't generate
  // an invalid block, but if we didn't validate this then an untrusted man-in-the-middle could obtain the next
  // valid block from the network and simply replace the transactions in it with their own fictional
  // transactions that reference spent or non-existant inputs.
  if (transactions.isEmpty())
    throw new VerificationException("Block had no transactions");
  if (this.getOptimalEncodingMessageSize() > MAX_BLOCK_SIZE)
    throw new VerificationException("Block larger than MAX_BLOCK_SIZE");
  checkTransactions(height, flags);
  checkMerkleRoot();
  checkSigOps();
  if (flags.contains(VerifyFlag.SEGWIT)) checkSegwitCommit();
  for (Transaction transaction : transactions)
    transaction.verify();
  }

代码示例来源：origin: cash.bitcoinj/bitcoinj-core

/**
 * Checks the block contents
 *
 * @param height block height, if known, or -1 otherwise. If valid, used
 * to validate the coinbase input script of v2 and above blocks.
 * @param flags flags to indicate which tests should be applied (i.e.
 * whether to test for height in the coinbase transaction).
 * @throws VerificationException if there was an error verifying the block.
 */
public void verifyTransactions(final int height, final EnumSet<VerifyFlag> flags) throws VerificationException {
  // Now we need to check that the body of the block actually matches the headers. The network won't generate
  // an invalid block, but if we didn't validate this then an untrusted man-in-the-middle could obtain the next
  // valid block from the network and simply replace the transactions in it with their own fictional
  // transactions that reference spent or non-existant inputs.
  if (transactions.isEmpty())
    throw new VerificationException("Block had no transactions");
  if (this.getOptimalEncodingMessageSize() > MAX_BLOCK_SIZE)
    throw new VerificationException("Block larger than MAX_BLOCK_SIZE");
  checkTransactions(height, flags);
  checkMerkleRoot();
  checkSigOps();
  for (Transaction transaction : transactions)
    transaction.verify();
  }

代码示例来源：origin: greenaddress/GreenBits

/**
 * Checks the block contents
 *
 * @param height block height, if known, or -1 otherwise. If valid, used
 * to validate the coinbase input script of v2 and above blocks.
 * @param flags flags to indicate which tests should be applied (i.e.
 * whether to test for height in the coinbase transaction).
 * @throws VerificationException if there was an error verifying the block.
 */
public void verifyTransactions(final int height, final EnumSet<VerifyFlag> flags) throws VerificationException {
  // Now we need to check that the body of the block actually matches the headers. The network won't generate
  // an invalid block, but if we didn't validate this then an untrusted man-in-the-middle could obtain the next
  // valid block from the network and simply replace the transactions in it with their own fictional
  // transactions that reference spent or non-existant inputs.
  if (transactions.isEmpty())
    throw new VerificationException("Block had no transactions");
  if (this.getOptimalEncodingMessageSize() > MAX_BLOCK_SIZE)
    throw new VerificationException("Block larger than MAX_BLOCK_SIZE");
  checkTransactions(height, flags);
  checkMerkleRoot();
  checkSigOps();
  for (Transaction transaction : transactions)
    transaction.verify();
  }

代码示例来源：origin: greenaddress/GreenBits

@Test(expected = VerificationException.LargerThanMaxBlockSize.class)
public void tooHuge() throws Exception {
  tx.getInput(0).setScriptBytes(new byte[Block.MAX_BLOCK_SIZE]);
  tx.verify();
}

代码示例来源：origin: greenaddress/GreenBits

@Test(expected = VerificationException.NegativeValueOutput.class)
public void negativeOutput() throws Exception {
  tx.getOutput(0).setValue(Coin.NEGATIVE_SATOSHI);
  tx.verify();
}

代码示例来源：origin: HashEngineering/dashj

/**
 * Checks the block contents
 *
 * @param height block height, if known, or -1 otherwise. If valid, used
 * to validate the coinbase input script of v2 and above blocks.
 * @param flags flags to indicate which tests should be applied (i.e.
 * whether to test for height in the coinbase transaction).
 * @throws VerificationException if there was an error verifying the block.
 */
public void verifyTransactions(final int height, final EnumSet<VerifyFlag> flags) throws VerificationException {
  // Now we need to check that the body of the block actually matches the headers. The network won't generate
  // an invalid block, but if we didn't validate this then an untrusted man-in-the-middle could obtain the next
  // valid block from the network and simply replace the transactions in it with their own fictional
  // transactions that reference spent or non-existant inputs.
  if (transactions.isEmpty())
    throw new VerificationException("Block had no transactions");
  if (this.getOptimalEncodingMessageSize() > (height >= params.getDIP0001BlockHeight() ? MAX_BLOCK_SIZE_DIP0001 : MAX_BLOCK_SIZE))
    throw new VerificationException("Block larger than MAX_BLOCK_SIZE");
  checkTransactions(height, flags);
  checkMerkleRoot();
  checkSigOps();
  for (Transaction transaction : transactions)
    transaction.verify();
  }

代码示例来源：origin: greenaddress/GreenBits

@Test(expected = VerificationException.DuplicatedOutPoint.class)
public void duplicateOutPoint() throws Exception {
  TransactionInput input = tx.getInput(0);
  input.setScriptBytes(new byte[1]);
  tx.addInput(input.duplicateDetached());
  tx.verify();
}

代码示例来源：origin: greenaddress/GreenBits

@Test(expected = VerificationException.UnexpectedCoinbaseInput.class)
public void coinbaseInputInNonCoinbaseTX() throws Exception {
  tx.addInput(Sha256Hash.ZERO_HASH, 0xFFFFFFFFL, new ScriptBuilder().data(new byte[10]).build());
  tx.verify();
}

代码示例来源：origin: greenaddress/GreenBits

@Test(expected = VerificationException.CoinbaseScriptSizeOutOfRange.class)
public void coinbaseScriptSigTooSmall() throws Exception {
  tx.clearInputs();
  tx.addInput(Sha256Hash.ZERO_HASH, 0xFFFFFFFFL, new ScriptBuilder().build());
  tx.verify();
}

代码示例来源：origin: greenaddress/GreenBits

@Test(expected = VerificationException.ExcessiveValue.class)
public void exceedsMaxMoney2() throws Exception {
  Coin half = PARAMS.getMaxMoney().divide(2).add(Coin.SATOSHI);
  tx.getOutput(0).setValue(half);
  tx.addOutput(half, ADDRESS);
  tx.verify();
}

代码示例来源：origin: greenaddress/GreenBits

@Test(expected = VerificationException.CoinbaseScriptSizeOutOfRange.class)
public void coinbaseScriptSigTooLarge() throws Exception {
  tx.clearInputs();
  TransactionInput input = tx.addInput(Sha256Hash.ZERO_HASH, 0xFFFFFFFFL, new ScriptBuilder().data(new byte[99]).build());
  assertEquals(101, input.getScriptBytes().length);
  tx.verify();
}

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