Exemplo n.º 1
0
  protected TransactionSummary transform(
      Transaction tx, int time, int height, int blockChainHeight) {
    long value = 0;
    Address destAddress = null;
    for (TransactionOutput output : tx.outputs) {
      if (isMine(output.script)) {
        value += output.value;
      } else {
        destAddress = output.script.getAddress(_network);
      }
    }

    if (tx.isCoinbase()) {
      // For coinbase transactions there is nothing to subtract
    } else {
      for (TransactionInput input : tx.inputs) {
        // find parent output
        TransactionOutputEx funding = _backing.getParentTransactionOutput(input.outPoint);
        if (funding == null) {
          _logger.logError("Unable to find parent output for: " + input.outPoint);
          continue;
        }
        if (isMine(funding)) {
          value -= funding.value;
        }
      }
    }

    int confirmations;
    if (height == -1) {
      confirmations = 0;
    } else {
      confirmations = Math.max(0, blockChainHeight - height + 1);
    }

    // only track a destinationAddress if it is an outgoing transaction (i.e. send money to someone)
    // to prevent the user that he tries to return money to an address he got bitcoin from.
    if (value >= 0) {
      destAddress = null;
    }

    boolean isQueuedOutgoing = _backing.isOutgoingTransaction(tx.getHash());

    return new TransactionSummary(
        tx.getHash(),
        value,
        time,
        height,
        confirmations,
        isQueuedOutgoing,
        com.google.common.base.Optional.fromNullable(destAddress));
  }
 private static void sendTransactionsToListener(
     StoredBlock block,
     NewBlockType blockType,
     BlockChainListener listener,
     int relativityOffset,
     List<Transaction> transactions,
     boolean clone,
     Set<Sha256Hash> falsePositives)
     throws VerificationException {
   for (Transaction tx : transactions) {
     try {
       if (listener.isTransactionRelevant(tx)) {
         falsePositives.remove(tx.getHash());
         if (clone) tx = new Transaction(tx.params, tx.bitcoinSerialize());
         listener.receiveFromBlock(tx, block, blockType, relativityOffset++);
       }
     } catch (ScriptException e) {
       // We don't want scripts we don't understand to break the block chain so just note that this
       // tx was
       // not scanned here and continue.
       log.warn("Failed to parse a script: " + e.toString());
     } catch (ProtocolException e) {
       // Failed to duplicate tx, should never happen.
       throw new RuntimeException(e);
     }
   }
 }
Exemplo n.º 3
0
 @Override
 public synchronized boolean deleteTransaction(Sha256Hash transactionId) {
   TransactionEx tex = _backing.getTransaction(transactionId);
   if (tex == null) return false;
   Transaction tx = TransactionEx.toTransaction(tex);
   _backing.beginTransaction();
   try {
     // See if any of the outputs are stored locally and remove them
     for (int i = 0; i < tx.outputs.length; i++) {
       TransactionOutput output = tx.outputs[i];
       OutPoint outPoint = new OutPoint(tx.getHash(), i);
       TransactionOutputEx utxo = _backing.getUnspentOutput(outPoint);
       if (utxo != null) {
         _backing.deleteUnspentOutput(outPoint);
       }
     }
     // remove it from the backing
     _backing.deleteTransaction(transactionId);
     _backing.setTransactionSuccessful();
   } finally {
     _backing.endTransaction();
   }
   updateLocalBalance(); // will still need a new sync besides re-calculating
   return true;
 }
Exemplo n.º 4
0
 public synchronized void queueTransaction(Transaction transaction) {
   // Store transaction in outgoing buffer, so we can broadcast it
   // later
   byte[] rawTransaction = transaction.toBytes();
   _backing.putOutgoingTransaction(transaction.getHash(), rawTransaction);
   markTransactionAsSpent(transaction);
 }
Exemplo n.º 5
0
  @Override
  public synchronized boolean cancelQueuedTransaction(Sha256Hash transaction) {
    Map<Sha256Hash, byte[]> outgoingTransactions = _backing.getOutgoingTransactions();

    if (!outgoingTransactions.containsKey(transaction)) {
      return false;
    }

    Transaction tx;
    try {
      tx = Transaction.fromBytes(outgoingTransactions.get(transaction));
    } catch (TransactionParsingException e) {
      return false;
    }

    _backing.beginTransaction();
    try {

      // See if any of the outputs are stored locally and remove them
      for (int i = 0; i < tx.outputs.length; i++) {
        TransactionOutput output = tx.outputs[i];
        OutPoint outPoint = new OutPoint(tx.getHash(), i);
        TransactionOutputEx utxo = _backing.getUnspentOutput(outPoint);
        if (utxo != null) {
          _backing.deleteUnspentOutput(outPoint);
        }
      }

      // Remove a queued transaction from our outgoing buffer
      _backing.removeOutgoingTransaction(transaction);

      // remove it from the backing
      _backing.deleteTransaction(transaction);
      _backing.setTransactionSuccessful();
    } finally {
      _backing.endTransaction();
    }

    // calc the new balance to remove the outgoing amount
    // the total balance will still be wrong, as we already deleted some UTXOs to build the queued
    // transaction
    // these will get restored after the next sync
    updateLocalBalance();

    // markTransactionAsSpent(transaction);
    return true;
  }
Exemplo n.º 6
0
  private void markTransactionAsSpent(Transaction transaction) {
    _backing.beginTransaction();
    try {
      // Remove inputs from unspent, marking them as spent
      for (TransactionInput input : transaction.inputs) {
        TransactionOutputEx parentOutput = _backing.getUnspentOutput(input.outPoint);
        if (parentOutput != null) {
          _backing.deleteUnspentOutput(input.outPoint);
          _backing.putParentTransactionOutput(parentOutput);
        }
      }

      // See if any of the outputs are for ourselves and store them as
      // unspent
      for (int i = 0; i < transaction.outputs.length; i++) {
        TransactionOutput output = transaction.outputs[i];
        if (isMine(output.script)) {
          _backing.putUnspentOutput(
              new TransactionOutputEx(
                  new OutPoint(transaction.getHash(), i),
                  -1,
                  output.value,
                  output.script.getScriptBytes(),
                  false));
        }
      }

      // Store transaction locally, so we have it in our history and don't
      // need to fetch it in a minute
      _backing.putTransaction(TransactionEx.fromUnconfirmedTransaction(transaction));
      _backing.setTransactionSuccessful();
    } finally {
      _backing.endTransaction();
    }

    // Tell account that we have a new transaction
    onNewTransaction(TransactionEx.fromUnconfirmedTransaction(transaction), transaction);

    // Calculate local balance cache. It has changed because we have done
    // some spending
    updateLocalBalance();
    persistContextIfNecessary();
  }
Exemplo n.º 7
0
  protected Balance calculateLocalBalance() {

    Collection<TransactionOutputEx> unspentOutputs =
        new HashSet<TransactionOutputEx>(_backing.getAllUnspentOutputs());
    long confirmed = 0;
    long pendingChange = 0;
    long pendingSending = 0;
    long pendingReceiving = 0;

    //
    // Determine the value we are receiving and create a set of outpoints for fast lookup
    //
    Set<OutPoint> unspentOutPoints = new HashSet<OutPoint>();
    for (TransactionOutputEx output : unspentOutputs) {
      if (output.height == -1) {
        if (isFromMe(output.outPoint.hash)) {
          pendingChange += output.value;
        } else {
          pendingReceiving += output.value;
        }
      } else {
        confirmed += output.value;
      }
      unspentOutPoints.add(output.outPoint);
    }

    //
    // Determine the value we are sending
    //

    // Get the current set of unconfirmed transactions
    List<Transaction> unconfirmed = new ArrayList<Transaction>();
    for (TransactionEx tex : _backing.getUnconfirmedTransactions()) {
      try {
        Transaction t = Transaction.fromByteReader(new ByteReader(tex.binary));
        unconfirmed.add(t);
      } catch (TransactionParsingException e) {
        // never happens, we have parsed it before
      }
    }

    for (Transaction t : unconfirmed) {
      // For each input figure out if WE are sending it by fetching the
      // parent transaction and looking at the address
      boolean weSend = false;
      for (TransactionInput input : t.inputs) {
        // Find the parent transaction
        if (input.outPoint.hash.equals(Sha256Hash.ZERO_HASH)) {
          continue;
        }
        TransactionOutputEx parent = _backing.getParentTransactionOutput(input.outPoint);
        if (parent == null) {
          _logger.logError("Unable to find parent transaction output: " + input.outPoint);
          continue;
        }
        TransactionOutput parentOutput = transform(parent);
        Address fundingAddress = parentOutput.script.getAddress(_network);
        if (isMine(fundingAddress)) {
          // One of our addresses are sending coins
          pendingSending += parentOutput.value;
          weSend = true;
        }
      }

      // Now look at the outputs and if it contains change for us, then subtract that from the
      // sending amount
      // if it is already spent in another transaction
      for (int i = 0; i < t.outputs.length; i++) {
        TransactionOutput output = t.outputs[i];
        Address destination = output.script.getAddress(_network);
        if (weSend && isMine(destination)) {
          // The funds are sent from us to us
          OutPoint outPoint = new OutPoint(t.getHash(), i);
          if (!unspentOutPoints.contains(outPoint)) {
            // This output has been spent, subtract it from the amount sent
            pendingSending -= output.value;
          }
        }
      }
    }

    int blockHeight = getBlockChainHeight();
    return new Balance(
        confirmed,
        pendingReceiving,
        pendingSending,
        pendingChange,
        System.currentTimeMillis(),
        blockHeight,
        true,
        _allowZeroConfSpending);
  }
  private void readTransaction(Protos.Transaction txProto, NetworkParameters params)
      throws UnreadableWalletException {
    Transaction tx = new Transaction(params);
    if (txProto.hasUpdatedAt()) {
      tx.setUpdateTime(new Date(txProto.getUpdatedAt()));
    }

    for (Protos.TransactionOutput outputProto : txProto.getTransactionOutputList()) {
      Coin value = Coin.valueOf(outputProto.getValue());
      byte[] scriptBytes = outputProto.getScriptBytes().toByteArray();
      TransactionOutput output = new TransactionOutput(params, tx, value, scriptBytes);
      tx.addOutput(output);
    }

    for (Protos.TransactionInput inputProto : txProto.getTransactionInputList()) {
      byte[] scriptBytes = inputProto.getScriptBytes().toByteArray();
      TransactionOutPoint outpoint =
          new TransactionOutPoint(
              params,
              inputProto.getTransactionOutPointIndex() & 0xFFFFFFFFL,
              byteStringToHash(inputProto.getTransactionOutPointHash()));
      Coin value = inputProto.hasValue() ? Coin.valueOf(inputProto.getValue()) : null;
      TransactionInput input = new TransactionInput(params, tx, scriptBytes, outpoint, value);
      if (inputProto.hasSequence()) {
        input.setSequenceNumber(inputProto.getSequence());
      }
      tx.addInput(input);
    }

    for (int i = 0; i < txProto.getBlockHashCount(); i++) {
      ByteString blockHash = txProto.getBlockHash(i);
      int relativityOffset = 0;
      if (txProto.getBlockRelativityOffsetsCount() > 0)
        relativityOffset = txProto.getBlockRelativityOffsets(i);
      tx.addBlockAppearance(byteStringToHash(blockHash), relativityOffset);
    }

    if (txProto.hasLockTime()) {
      tx.setLockTime(0xffffffffL & txProto.getLockTime());
    }

    if (txProto.hasPurpose()) {
      switch (txProto.getPurpose()) {
        case UNKNOWN:
          tx.setPurpose(Transaction.Purpose.UNKNOWN);
          break;
        case USER_PAYMENT:
          tx.setPurpose(Transaction.Purpose.USER_PAYMENT);
          break;
        case KEY_ROTATION:
          tx.setPurpose(Transaction.Purpose.KEY_ROTATION);
          break;
        case ASSURANCE_CONTRACT_CLAIM:
          tx.setPurpose(Transaction.Purpose.ASSURANCE_CONTRACT_CLAIM);
          break;
        case ASSURANCE_CONTRACT_PLEDGE:
          tx.setPurpose(Transaction.Purpose.ASSURANCE_CONTRACT_PLEDGE);
          break;
        case ASSURANCE_CONTRACT_STUB:
          tx.setPurpose(Transaction.Purpose.ASSURANCE_CONTRACT_STUB);
          break;
        default:
          throw new RuntimeException("New purpose serialization not implemented");
      }
    } else {
      // Old wallet: assume a user payment as that's the only reason a new tx would have been
      // created back then.
      tx.setPurpose(Transaction.Purpose.USER_PAYMENT);
    }

    if (txProto.hasExchangeRate()) {
      Protos.ExchangeRate exchangeRateProto = txProto.getExchangeRate();
      tx.setExchangeRate(
          new ExchangeRate(
              Coin.valueOf(exchangeRateProto.getCoinValue()),
              Fiat.valueOf(
                  exchangeRateProto.getFiatCurrencyCode(), exchangeRateProto.getFiatValue())));
    }

    if (txProto.hasMemo()) tx.setMemo(txProto.getMemo());

    // Peercoin: Include time
    tx.setTime(txProto.getTime());

    // Transaction should now be complete.
    Sha256Hash protoHash = byteStringToHash(txProto.getHash());
    if (!tx.getHash().equals(protoHash))
      throw new UnreadableWalletException(
          String.format(
              "Transaction did not deserialize completely: %s vs %s", tx.getHash(), protoHash));
    if (txMap.containsKey(txProto.getHash()))
      throw new UnreadableWalletException(
          "Wallet contained duplicate transaction " + byteStringToHash(txProto.getHash()));
    txMap.put(txProto.getHash(), tx);
  }
  private static Protos.Transaction makeTxProto(WalletTransaction wtx) {
    Transaction tx = wtx.getTransaction();
    Protos.Transaction.Builder txBuilder = Protos.Transaction.newBuilder();

    txBuilder
        .setPool(getProtoPool(wtx))
        .setHash(hashToByteString(tx.getHash()))
        .setVersion((int) tx.getVersion())
        .setTime(tx.getTime());

    if (tx.getUpdateTime() != null) {
      txBuilder.setUpdatedAt(tx.getUpdateTime().getTime());
    }

    if (tx.getLockTime() > 0) {
      txBuilder.setLockTime((int) tx.getLockTime());
    }

    // Handle inputs.
    for (TransactionInput input : tx.getInputs()) {
      Protos.TransactionInput.Builder inputBuilder =
          Protos.TransactionInput.newBuilder()
              .setScriptBytes(ByteString.copyFrom(input.getScriptBytes()))
              .setTransactionOutPointHash(hashToByteString(input.getOutpoint().getHash()))
              .setTransactionOutPointIndex((int) input.getOutpoint().getIndex());
      if (input.hasSequence()) inputBuilder.setSequence((int) input.getSequenceNumber());
      if (input.getValue() != null) inputBuilder.setValue(input.getValue().value);
      txBuilder.addTransactionInput(inputBuilder);
    }

    // Handle outputs.
    for (TransactionOutput output : tx.getOutputs()) {
      Protos.TransactionOutput.Builder outputBuilder =
          Protos.TransactionOutput.newBuilder()
              .setScriptBytes(ByteString.copyFrom(output.getScriptBytes()))
              .setValue(output.getValue().value);
      final TransactionInput spentBy = output.getSpentBy();
      if (spentBy != null) {
        Sha256Hash spendingHash = spentBy.getParentTransaction().getHash();
        int spentByTransactionIndex = spentBy.getParentTransaction().getInputs().indexOf(spentBy);
        outputBuilder
            .setSpentByTransactionHash(hashToByteString(spendingHash))
            .setSpentByTransactionIndex(spentByTransactionIndex);
      }
      txBuilder.addTransactionOutput(outputBuilder);
    }

    // Handle which blocks tx was seen in.
    final Map<Sha256Hash, Integer> appearsInHashes = tx.getAppearsInHashes();
    if (appearsInHashes != null) {
      for (Map.Entry<Sha256Hash, Integer> entry : appearsInHashes.entrySet()) {
        txBuilder.addBlockHash(hashToByteString(entry.getKey()));
        txBuilder.addBlockRelativityOffsets(entry.getValue());
      }
    }

    if (tx.hasConfidence()) {
      TransactionConfidence confidence = tx.getConfidence();
      Protos.TransactionConfidence.Builder confidenceBuilder =
          Protos.TransactionConfidence.newBuilder();
      writeConfidence(txBuilder, confidence, confidenceBuilder);
    }

    Protos.Transaction.Purpose purpose;
    switch (tx.getPurpose()) {
      case UNKNOWN:
        purpose = Protos.Transaction.Purpose.UNKNOWN;
        break;
      case USER_PAYMENT:
        purpose = Protos.Transaction.Purpose.USER_PAYMENT;
        break;
      case KEY_ROTATION:
        purpose = Protos.Transaction.Purpose.KEY_ROTATION;
        break;
      case ASSURANCE_CONTRACT_CLAIM:
        purpose = Protos.Transaction.Purpose.ASSURANCE_CONTRACT_CLAIM;
        break;
      case ASSURANCE_CONTRACT_PLEDGE:
        purpose = Protos.Transaction.Purpose.ASSURANCE_CONTRACT_PLEDGE;
        break;
      case ASSURANCE_CONTRACT_STUB:
        purpose = Protos.Transaction.Purpose.ASSURANCE_CONTRACT_STUB;
        break;
      default:
        throw new RuntimeException("New tx purpose serialization not implemented.");
    }
    txBuilder.setPurpose(purpose);

    ExchangeRate exchangeRate = tx.getExchangeRate();
    if (exchangeRate != null) {
      Protos.ExchangeRate.Builder exchangeRateBuilder =
          Protos.ExchangeRate.newBuilder()
              .setCoinValue(exchangeRate.coin.value)
              .setFiatValue(exchangeRate.fiat.value)
              .setFiatCurrencyCode(exchangeRate.fiat.currencyCode);
      txBuilder.setExchangeRate(exchangeRateBuilder);
    }

    if (tx.getMemo() != null) txBuilder.setMemo(tx.getMemo());

    return txBuilder.build();
  }