@Test
public void skipScripts() throws Exception {
store = createStore(params, 10);
chain = new FullPrunedBlockChain(params, store);
// Check that we aren't accidentally leaving any references
// to the full StoredUndoableBlock's lying around (ie memory leaks)
ECKey outKey = new ECKey();
int height = 1;
// Build some blocks on genesis block to create a spendable output
Block rollingBlock =
params
.getGenesisBlock()
.createNextBlockWithCoinbase(Block.BLOCK_VERSION_GENESIS, outKey.getPubKey(), height++);
chain.add(rollingBlock);
TransactionOutput spendableOutput = rollingBlock.getTransactions().get(0).getOutput(0);
for (int i = 1; i < params.getSpendableCoinbaseDepth(); i++) {
rollingBlock =
rollingBlock.createNextBlockWithCoinbase(
Block.BLOCK_VERSION_GENESIS, outKey.getPubKey(), height++);
chain.add(rollingBlock);
}
rollingBlock = rollingBlock.createNextBlock(null);
Transaction t = new Transaction(params);
t.addOutput(new TransactionOutput(params, t, FIFTY_COINS, new byte[] {}));
TransactionInput input = t.addInput(spendableOutput);
// Invalid script.
input.clearScriptBytes();
rollingBlock.addTransaction(t);
rollingBlock.solve();
chain.setRunScripts(false);
try {
chain.add(rollingBlock);
} catch (VerificationException e) {
fail();
}
try {
store.close();
} catch (Exception e) {
}
}
@Test
public void dataDrivenInvalidTransactions() throws Exception {
BufferedReader in =
new BufferedReader(
new InputStreamReader(
getClass().getResourceAsStream("tx_invalid.json"), Charset.forName("UTF-8")));
NetworkParameters params = TestNet3Params.get();
// Poor man's (aka. really, really poor) JSON parser (because pulling in a lib for this is
// probably overkill)
List<JSONObject> tx = new ArrayList<JSONObject>(1);
in.read(); // remove first [
StringBuffer buffer = new StringBuffer(1000);
while (in.ready()) {
String line = in.readLine();
if (line == null || line.equals("")) continue;
buffer.append(line);
if (line.equals("]") && buffer.toString().equals("]") && !in.ready()) break; // ignore last ]
boolean isFinished = appendToList(tx, buffer);
while (tx.size() > 0
&& tx.get(0).isList()
&& tx.get(0).list.size() == 1
&& tx.get(0).list.get(0).isString()) tx.remove(0);
if (isFinished && tx.size() == 1 && tx.get(0).list.size() == 3) {
HashMap<TransactionOutPoint, Script> scriptPubKeys =
new HashMap<TransactionOutPoint, Script>();
for (JSONObject input : tx.get(0).list.get(0).list) {
String hash = input.list.get(0).string;
int index = input.list.get(1).integer;
String script = input.list.get(2).string;
Sha256Hash sha256Hash =
new Sha256Hash(Hex.decode(hash.getBytes(Charset.forName("UTF-8"))));
scriptPubKeys.put(
new TransactionOutPoint(params, index, sha256Hash), parseScriptString(script));
}
byte[] bytes = tx.get(0).list.get(1).string.getBytes(Charset.forName("UTF-8"));
Transaction transaction = new Transaction(params, Hex.decode(bytes));
boolean enforceP2SH = tx.get(0).list.get(2).booleanValue;
assertTrue(tx.get(0).list.get(2).isBoolean());
boolean valid = true;
try {
transaction.verify();
} catch (VerificationException e) {
valid = false;
}
// The reference client checks this case in CheckTransaction, but we leave it to
// later where we will see an attempt to double-spend, so we explicitly check here
HashSet<TransactionOutPoint> set = new HashSet<TransactionOutPoint>();
for (TransactionInput input : transaction.getInputs()) {
if (set.contains(input.getOutpoint())) valid = false;
set.add(input.getOutpoint());
}
for (int i = 0; i < transaction.getInputs().size() && valid; i++) {
TransactionInput input = transaction.getInputs().get(i);
assertTrue(scriptPubKeys.containsKey(input.getOutpoint()));
try {
input
.getScriptSig()
.correctlySpends(
transaction, i, scriptPubKeys.get(input.getOutpoint()), enforceP2SH);
} catch (VerificationException e) {
valid = false;
}
}
if (valid) fail();
tx.clear();
}
}
in.close();
}
@Test
public void dataDrivenValidTransactions() throws Exception {
BufferedReader in =
new BufferedReader(
new InputStreamReader(
getClass().getResourceAsStream("tx_valid.json"), Charset.forName("UTF-8")));
NetworkParameters params = TestNet3Params.get();
// Poor man's (aka. really, really poor) JSON parser (because pulling in a lib for this is
// probably not overkill)
int lineNum = -1;
List<JSONObject> tx = new ArrayList<JSONObject>(3);
in.read(); // remove first [
StringBuffer buffer = new StringBuffer(1000);
while (in.ready()) {
lineNum++;
String line = in.readLine();
if (line == null || line.equals("")) continue;
buffer.append(line);
if (line.equals("]") && buffer.toString().equals("]") && !in.ready()) break;
boolean isFinished = appendToList(tx, buffer);
while (tx.size() > 0
&& tx.get(0).isList()
&& tx.get(0).list.size() == 1
&& tx.get(0).list.get(0).isString()) tx.remove(0); // ignore last ]
if (isFinished && tx.size() == 1 && tx.get(0).list.size() == 3) {
Transaction transaction = null;
try {
HashMap<TransactionOutPoint, Script> scriptPubKeys =
new HashMap<TransactionOutPoint, Script>();
for (JSONObject input : tx.get(0).list.get(0).list) {
String hash = input.list.get(0).string;
int index = input.list.get(1).integer;
String script = input.list.get(2).string;
Sha256Hash sha256Hash =
new Sha256Hash(Hex.decode(hash.getBytes(Charset.forName("UTF-8"))));
scriptPubKeys.put(
new TransactionOutPoint(params, index, sha256Hash), parseScriptString(script));
}
byte[] bytes = tx.get(0).list.get(1).string.getBytes(Charset.forName("UTF-8"));
transaction = new Transaction(params, Hex.decode(bytes));
boolean enforceP2SH = tx.get(0).list.get(2).booleanValue;
assertTrue(tx.get(0).list.get(2).isBoolean());
transaction.verify();
for (int i = 0; i < transaction.getInputs().size(); i++) {
TransactionInput input = transaction.getInputs().get(i);
if (input.getOutpoint().getIndex() == 0xffffffffL) input.getOutpoint().setIndex(-1);
assertTrue(scriptPubKeys.containsKey(input.getOutpoint()));
input
.getScriptSig()
.correctlySpends(
transaction, i, scriptPubKeys.get(input.getOutpoint()), enforceP2SH);
}
tx.clear();
} catch (Exception e) {
System.err.println("Exception processing line " + lineNum + ": " + line);
if (transaction != null) System.err.println(transaction);
throw e;
}
}
}
in.close();
}
public void testTransaction(
NetworkParameters params, byte[] txBytes, boolean isChild, boolean lazy, boolean retain)
throws Exception {
// reference serializer to produce comparison serialization output after changes to
// message structure.
BitcoinSerializer bsRef = new BitcoinSerializer(params, false, false);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
BitcoinSerializer bs = new BitcoinSerializer(params, lazy, retain);
Transaction t1;
Transaction tRef;
t1 = (Transaction) bs.deserialize(new ByteArrayInputStream(txBytes));
tRef = (Transaction) bsRef.deserialize(new ByteArrayInputStream(txBytes));
// verify our reference BitcoinSerializer produces matching byte array.
bos.reset();
bsRef.serialize(tRef, bos);
assertTrue(Arrays.equals(bos.toByteArray(), txBytes));
// check lazy and retain status survive both before and after a serialization
assertEquals(!lazy, t1.isParsed());
if (t1.isParsed()) assertEquals(retain, t1.isCached());
serDeser(bs, t1, txBytes, null, null);
assertEquals(lazy, !t1.isParsed());
if (t1.isParsed()) assertEquals(retain, t1.isCached());
// compare to ref tx
bos.reset();
bsRef.serialize(tRef, bos);
serDeser(bs, t1, bos.toByteArray(), null, null);
// retrieve a value from a child
t1.getInputs();
assertTrue(t1.isParsed());
if (t1.getInputs().size() > 0) {
assertTrue(t1.isParsed());
TransactionInput tin = t1.getInputs().get(0);
assertEquals(!lazy, tin.isParsed());
if (tin.isParsed()) assertEquals(retain, tin.isCached());
// does it still match ref tx?
serDeser(bs, t1, bos.toByteArray(), null, null);
}
// refresh tx
t1 = (Transaction) bs.deserialize(new ByteArrayInputStream(txBytes));
tRef = (Transaction) bsRef.deserialize(new ByteArrayInputStream(txBytes));
// add an input
if (t1.getInputs().size() > 0) {
t1.addInput(t1.getInputs().get(0));
// replicate on reference tx
tRef.addInput(tRef.getInputs().get(0));
assertFalse(t1.isCached());
assertTrue(t1.isParsed());
bos.reset();
bsRef.serialize(tRef, bos);
byte[] source = bos.toByteArray();
// confirm we still match the reference tx.
serDeser(bs, t1, source, null, null);
}
}
public void testBlock(byte[] blockBytes, boolean isChild, boolean lazy, boolean retain)
throws Exception {
// reference serializer to produce comparison serialization output after changes to
// message structure.
BitcoinSerializer bsRef = new BitcoinSerializer(unitTestParams, false, false);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
BitcoinSerializer bs = new BitcoinSerializer(unitTestParams, lazy, retain);
Block b1;
Block bRef;
b1 = (Block) bs.deserialize(new ByteArrayInputStream(blockBytes));
bRef = (Block) bsRef.deserialize(new ByteArrayInputStream(blockBytes));
// verify our reference BitcoinSerializer produces matching byte array.
bos.reset();
bsRef.serialize(bRef, bos);
assertTrue(Arrays.equals(bos.toByteArray(), blockBytes));
// check lazy and retain status survive both before and after a serialization
assertEquals(!lazy, b1.isParsedTransactions());
assertEquals(!lazy, b1.isParsedHeader());
if (b1.isParsedHeader()) assertEquals(retain, b1.isHeaderBytesValid());
if (b1.isParsedTransactions()) assertEquals(retain, b1.isTransactionBytesValid());
serDeser(bs, b1, blockBytes, null, null);
assertEquals(!lazy, b1.isParsedTransactions());
assertEquals(!lazy, b1.isParsedHeader());
if (b1.isParsedHeader()) assertEquals(retain, b1.isHeaderBytesValid());
if (b1.isParsedTransactions()) assertEquals(retain, b1.isTransactionBytesValid());
// compare to ref block
bos.reset();
bsRef.serialize(bRef, bos);
serDeser(bs, b1, bos.toByteArray(), null, null);
// retrieve a value from a child
b1.getTransactions();
assertTrue(b1.isParsedTransactions());
if (b1.getTransactions().size() > 0) {
assertTrue(b1.isParsedTransactions());
Transaction tx1 = b1.getTransactions().get(0);
// this will always be true for all children of a block once they are retrieved.
// the tx child inputs/outputs may not be parsed however.
// no longer forced to parse if length not provided.
// assertEquals(true, tx1.isParsed());
if (tx1.isParsed()) assertEquals(retain, tx1.isCached());
else assertTrue(tx1.isCached());
// does it still match ref block?
serDeser(bs, b1, bos.toByteArray(), null, null);
}
// refresh block
b1 = (Block) bs.deserialize(new ByteArrayInputStream(blockBytes));
bRef = (Block) bsRef.deserialize(new ByteArrayInputStream(blockBytes));
// retrieve a value from header
b1.getDifficultyTarget();
assertTrue(b1.isParsedHeader());
assertEquals(lazy, !b1.isParsedTransactions());
// does it still match ref block?
serDeser(bs, b1, bos.toByteArray(), null, null);
// refresh block
b1 = (Block) bs.deserialize(new ByteArrayInputStream(blockBytes));
bRef = (Block) bsRef.deserialize(new ByteArrayInputStream(blockBytes));
// retrieve a value from a child and header
b1.getDifficultyTarget();
assertTrue(b1.isParsedHeader());
assertEquals(lazy, !b1.isParsedTransactions());
b1.getTransactions();
assertTrue(b1.isParsedTransactions());
if (b1.getTransactions().size() > 0) {
assertTrue(b1.isParsedTransactions());
Transaction tx1 = b1.getTransactions().get(0);
// no longer forced to parse if length not provided.
// assertEquals(true, tx1.isParsed());
if (tx1.isParsed()) assertEquals(retain, tx1.isCached());
else assertTrue(tx1.isCached());
}
// does it still match ref block?
serDeser(bs, b1, bos.toByteArray(), null, null);
// refresh block
b1 = (Block) bs.deserialize(new ByteArrayInputStream(blockBytes));
bRef = (Block) bsRef.deserialize(new ByteArrayInputStream(blockBytes));
// change a value in header
b1.setNonce(23);
bRef.setNonce(23);
assertTrue(b1.isParsedHeader());
assertEquals(lazy, !b1.isParsedTransactions());
assertFalse(b1.isHeaderBytesValid());
if (b1.isParsedTransactions()) assertEquals(retain, b1.isTransactionBytesValid());
else assertEquals(true, b1.isTransactionBytesValid());
// does it still match ref block?
bos.reset();
bsRef.serialize(bRef, bos);
serDeser(bs, b1, bos.toByteArray(), null, null);
// refresh block
b1 = (Block) bs.deserialize(new ByteArrayInputStream(blockBytes));
bRef = (Block) bsRef.deserialize(new ByteArrayInputStream(blockBytes));
// retrieve a value from a child of a child
b1.getTransactions();
if (b1.getTransactions().size() > 0) {
Transaction tx1 = b1.getTransactions().get(0);
TransactionInput tin = tx1.getInputs().get(0);
assertTrue(tx1.isParsed());
assertTrue(b1.isParsedTransactions());
assertEquals(!lazy, b1.isParsedHeader());
assertEquals(!lazy, tin.isParsed());
assertEquals(tin.isParsed() ? retain : true, tin.isCached());
// does it still match ref tx?
bos.reset();
bsRef.serialize(bRef, bos);
serDeser(bs, b1, bos.toByteArray(), null, null);
}
// refresh block
b1 = (Block) bs.deserialize(new ByteArrayInputStream(blockBytes));
bRef = (Block) bsRef.deserialize(new ByteArrayInputStream(blockBytes));
// add an input
b1.getTransactions();
if (b1.getTransactions().size() > 0) {
Transaction tx1 = b1.getTransactions().get(0);
if (tx1.getInputs().size() > 0) {
tx1.addInput(tx1.getInputs().get(0));
// replicate on reference tx
bRef.getTransactions().get(0).addInput(bRef.getTransactions().get(0).getInputs().get(0));
assertFalse(tx1.isCached());
assertTrue(tx1.isParsed());
assertFalse(b1.isTransactionBytesValid());
assertTrue(b1.isParsedHeader());
// confirm sibling cache status was unaffected
if (tx1.getInputs().size() > 1) {
boolean parsed = tx1.getInputs().get(1).isParsed();
assertEquals(parsed ? retain : true, tx1.getInputs().get(1).isCached());
assertEquals(!lazy, parsed);
}
// this has to be false. Altering a tx invalidates the merkle root.
// when we have seperate merkle caching then the entire header won't need to be
// invalidated.
assertFalse(b1.isHeaderBytesValid());
bos.reset();
bsRef.serialize(bRef, bos);
byte[] source = bos.toByteArray();
// confirm we still match the reference tx.
serDeser(bs, b1, source, null, null);
}
// does it still match ref tx?
bos.reset();
bsRef.serialize(bRef, bos);
serDeser(bs, b1, bos.toByteArray(), null, null);
}
// refresh block
b1 = (Block) bs.deserialize(new ByteArrayInputStream(blockBytes));
Block b2 = (Block) bs.deserialize(new ByteArrayInputStream(blockBytes));
bRef = (Block) bsRef.deserialize(new ByteArrayInputStream(blockBytes));
Block bRef2 = (Block) bsRef.deserialize(new ByteArrayInputStream(blockBytes));
// reparent an input
b1.getTransactions();
if (b1.getTransactions().size() > 0) {
Transaction tx1 = b1.getTransactions().get(0);
Transaction tx2 = b2.getTransactions().get(0);
if (tx1.getInputs().size() > 0) {
TransactionInput fromTx1 = tx1.getInputs().get(0);
tx2.addInput(fromTx1);
// replicate on reference tx
TransactionInput fromTxRef = bRef.getTransactions().get(0).getInputs().get(0);
bRef2.getTransactions().get(0).addInput(fromTxRef);
// b1 hasn't changed but it's no longer in the parent
// chain of fromTx1 so has to have been uncached since it won't be
// notified of changes throught the parent chain anymore.
assertFalse(b1.isTransactionBytesValid());
// b2 should have it's cache invalidated because it has changed.
assertFalse(b2.isTransactionBytesValid());
bos.reset();
bsRef.serialize(bRef2, bos);
byte[] source = bos.toByteArray();
// confirm altered block matches altered ref block.
serDeser(bs, b2, source, null, null);
}
// does unaltered block still match ref block?
bos.reset();
bsRef.serialize(bRef, bos);
serDeser(bs, b1, bos.toByteArray(), null, null);
// how about if we refresh it?
bRef = (Block) bsRef.deserialize(new ByteArrayInputStream(blockBytes));
bos.reset();
bsRef.serialize(bRef, bos);
serDeser(bs, b1, bos.toByteArray(), null, null);
}
}