Exemplo n.º 1
0
  @Override
  public TransactionDetails getTransactionDetails(Sha256Hash txid) {
    // Note that this method is not synchronized, and we might fetch the transaction history while
    // synchronizing
    // accounts. That should be ok as we write to the DB in a sane order.

    TransactionEx tex = _backing.getTransaction(txid);
    Transaction tx = TransactionEx.toTransaction(tex);
    if (tx == null) {
      throw new RuntimeException();
    }

    List<TransactionDetails.Item> inputs = new ArrayList<TransactionDetails.Item>(tx.inputs.length);
    if (tx.isCoinbase()) {
      // We have a coinbase transaction. Create one input with the sum of the outputs as its value,
      // and make the address the null address
      long value = 0;
      for (TransactionOutput out : tx.outputs) {
        value += out.value;
      }
      inputs.add(new TransactionDetails.Item(Address.getNullAddress(_network), value, true));
    } else {
      // Populate the inputs
      for (TransactionInput input : tx.inputs) {
        Sha256Hash parentHash = input.outPoint.hash;
        // Get the parent transaction
        TransactionOutputEx parentOutput = _backing.getParentTransactionOutput(input.outPoint);
        if (parentOutput == null) {
          // We never heard about the parent, skip
          continue;
        }
        // Determine the parent address
        Address parentAddress;
        ScriptOutput parentScript = ScriptOutput.fromScriptBytes(parentOutput.script);
        if (parentScript == null) {
          // Null address means we couldn't figure out the address, strange script
          parentAddress = Address.getNullAddress(_network);
        } else {
          parentAddress = parentScript.getAddress(_network);
        }
        inputs.add(new TransactionDetails.Item(parentAddress, parentOutput.value, false));
      }
    }
    // Populate the outputs
    TransactionDetails.Item[] outputs = new TransactionDetails.Item[tx.outputs.length];
    for (int i = 0; i < tx.outputs.length; i++) {
      Address address = tx.outputs[i].script.getAddress(_network);
      outputs[i] = new TransactionDetails.Item(address, tx.outputs[i].value, false);
    }

    return new TransactionDetails(
        txid, tex.height, tex.time, inputs.toArray(new TransactionDetails.Item[] {}), outputs);
  }
Exemplo n.º 2
0
 /**
  * Determine whether a transaction was sent from one of our own addresses.
  *
  * <p>This is a costly operation as we have to lookup funding outputs of the transaction
  *
  * @param t the transaction to investigate
  * @return true iff one of the funding outputs were sent from one of our own addresses
  */
 protected boolean isFromMe(Transaction t) {
   for (TransactionInput input : t.inputs) {
     TransactionOutputEx funding = _backing.getParentTransactionOutput(input.outPoint);
     if (funding == null || funding.isCoinBase) {
       continue;
     }
     ScriptOutput fundingScript = ScriptOutput.fromScriptBytes(funding.script);
     Address fundingAddress = fundingScript.getAddress(_network);
     if (isMine(fundingAddress)) {
       return true;
     }
   }
   return false;
 }
Exemplo n.º 3
0
  @Override
  public List<TransactionOutputSummary> getUnspentTransactionOutputSummary() {
    // Note that this method is not synchronized, and we might fetch the transaction history while
    // synchronizing
    // accounts. That should be ok as we write to the DB in a sane order.

    // Get all unspent outputs for this account
    Collection<TransactionOutputEx> outputs = _backing.getAllUnspentOutputs();

    // Transform it to a list of summaries
    List<TransactionOutputSummary> list = new ArrayList<TransactionOutputSummary>();
    int blockChainHeight = getBlockChainHeight();
    for (TransactionOutputEx output : outputs) {

      ScriptOutput script = ScriptOutput.fromScriptBytes(output.script);
      Address address;
      if (script == null) {
        address = Address.getNullAddress(_network);
        // This never happens as we have parsed this script before
      } else {
        address = script.getAddress(_network);
      }
      int confirmations;
      if (output.height == -1) {
        confirmations = 0;
      } else {
        confirmations = Math.max(0, blockChainHeight - output.height + 1);
      }

      TransactionOutputSummary summary =
          new TransactionOutputSummary(
              output.outPoint, output.value, output.height, confirmations, address);
      list.add(summary);
    }
    // Sort & return
    Collections.sort(list);
    return list;
  }
Exemplo n.º 4
0
 /**
  * Determine whether an output script was created by one of our own addresses
  *
  * @param script the script to investigate
  * @return true iff the script was created by one of our own addresses
  */
 protected boolean isMine(ScriptOutput script) {
   Address address = script.getAddress(_network);
   return isMine(address);
 }