private Script parseScriptString(String string) throws Exception {
String[] words = string.split("[ \\t\\n]");
UnsafeByteArrayOutputStream out = new UnsafeByteArrayOutputStream();
for (String w : words) {
if (w.equals("")) continue;
if (w.matches("^-?[0-9]*$")) {
// Number
long val = Long.parseLong(w);
if (val >= -1 && val <= 16) out.write(Script.encodeToOpN((int) val));
else
Script.writeBytes(
out, Utils.reverseBytes(Utils.encodeMPI(BigInteger.valueOf(val), false)));
} else if (w.matches("^0x[0-9a-fA-F]*$")) {
// Raw hex data, inserted NOT pushed onto stack:
out.write(Hex.decode(w.substring(2)));
} else if (w.length() >= 2 && w.startsWith("'") && w.endsWith("'")) {
// Single-quoted string, pushed as data. NOTE: this is poor-man's
// parsing, spaces/tabs/newlines in single-quoted strings won't work.
Script.writeBytes(out, w.substring(1, w.length() - 1).getBytes(Charset.forName("UTF-8")));
} else if (ScriptOpCodes.getOpCode(w) != OP_INVALIDOPCODE) {
// opcode, e.g. OP_ADD or OP_1:
out.write(ScriptOpCodes.getOpCode(w));
} else if (w.startsWith("OP_")
&& ScriptOpCodes.getOpCode(w.substring(3)) != OP_INVALIDOPCODE) {
// opcode, e.g. OP_ADD or OP_1:
out.write(ScriptOpCodes.getOpCode(w.substring(3)));
} else {
throw new RuntimeException("Invalid Data");
}
}
return new Script(out.toByteArray());
}
@Test
public void testIp() throws Exception {
byte[] bytes =
Hex.decode(
"41043e96222332ea7848323c08116dddafbfa917b8e37f0bdf63841628267148588a09a43540942d58d49717ad3fabfe14978cf4f0a8b84d2435dad16e9aa4d7f935ac");
Script s = new Script(bytes);
assertTrue(s.isSentToRawPubKey());
}
@Test
public void testScriptSig() throws Exception {
byte[] sigProgBytes = Hex.decode(sigProg);
Script script = new Script(sigProgBytes);
// Test we can extract the from address.
byte[] hash160 = Utils.sha256hash160(script.getPubKey());
Address a = new Address(params, hash160);
assertEquals("mkFQohBpy2HDXrCwyMrYL5RtfrmeiuuPY2", a.toString());
}
@Test
public void testScriptPubKey() throws Exception {
// Check we can extract the to address
byte[] pubkeyBytes = Hex.decode(pubkeyProg);
Script pubkey = new Script(pubkeyBytes);
assertEquals(
"DUP HASH160 [33e81a941e64cda12c6a299ed322ddbdd03f8d0e] EQUALVERIFY CHECKSIG",
pubkey.toString());
Address toAddr = new Address(params, pubkey.getPubKeyHash());
assertEquals("mkFQohBpy2HDXrCwyMrYL5RtfrmeiuuPY2", toAddr.toString());
}
@Test
public void testMultiSig() throws Exception {
List<ECKey> keys = Lists.newArrayList(new ECKey(), new ECKey(), new ECKey());
assertTrue(ScriptBuilder.createMultiSigOutputScript(2, keys).isSentToMultiSig());
assertTrue(ScriptBuilder.createMultiSigOutputScript(3, keys).isSentToMultiSig());
assertFalse(ScriptBuilder.createOutputScript(new ECKey()).isSentToMultiSig());
try {
// Fail if we ask for more signatures than keys.
Script.createMultiSigOutputScript(4, keys);
fail();
} catch (Throwable e) {
// Expected.
}
try {
// Must have at least one signature required.
Script.createMultiSigOutputScript(0, keys);
} catch (Throwable e) {
// Expected.
}
// Actual execution is tested by the data driven tests.
}
@Test
public void dataDrivenInvalidScripts() throws Exception {
BufferedReader in =
new BufferedReader(
new InputStreamReader(
getClass().getResourceAsStream("script_invalid.json"), Charset.forName("UTF-8")));
NetworkParameters params = TestNet3Params.get();
// Poor man's JSON parser (because pulling in a lib for this is overkill)
String script = "";
while (in.ready()) {
String line = in.readLine();
if (line == null || line.equals("")) continue;
script += line;
if (line.equals("]") && script.equals("]") && !in.ready()) break; // ignore last ]
if (line.trim().endsWith("],") || line.trim().equals("]")) {
String[] scripts = script.split(",");
try {
scripts[0] = scripts[0].replaceAll("[\"\\[\\]]", "").trim();
scripts[1] = scripts[1].replaceAll("[\"\\[\\]]", "").trim();
Script scriptSig = parseScriptString(scripts[0]);
Script scriptPubKey = parseScriptString(scripts[1]);
scriptSig.correctlySpends(new Transaction(params), 0, scriptPubKey, true);
System.err.println("scriptSig: " + scripts[0]);
System.err.println("scriptPubKey: " + scripts[1]);
System.err.flush();
fail();
} catch (VerificationException e) {
// Expected.
}
script = "";
}
}
in.close();
}
@Test
public void testCreateMultiSigInputScript() throws AddressFormatException {
// Setup transaction and signatures
ECKey key1 =
new DumpedPrivateKey(params, "cVLwRLTvz3BxDAWkvS3yzT9pUcTCup7kQnfT2smRjvmmm1wAP6QT")
.getKey();
ECKey key2 =
new DumpedPrivateKey(params, "cTine92s8GLpVqvebi8rYce3FrUYq78ZGQffBYCS1HmDPJdSTxUo")
.getKey();
ECKey key3 =
new DumpedPrivateKey(params, "cVHwXSPRZmL9adctwBwmn4oTZdZMbaCsR5XF6VznqMgcvt1FDDxg")
.getKey();
Script multisigScript =
ScriptBuilder.createMultiSigOutputScript(2, Arrays.asList(key1, key2, key3));
byte[] bytes =
Hex.decode(
"01000000013df681ff83b43b6585fa32dd0e12b0b502e6481e04ee52ff0fdaf55a16a4ef61000000006b483045022100a84acca7906c13c5895a1314c165d33621cdcf8696145080895cbf301119b7cf0220730ff511106aa0e0a8570ff00ee57d7a6f24e30f592a10cae1deffac9e13b990012102b8d567bcd6328fd48a429f9cf4b315b859a58fd28c5088ef3cb1d98125fc4e8dffffffff02364f1c00000000001976a91439a02793b418de8ec748dd75382656453dc99bcb88ac40420f000000000017a9145780b80be32e117f675d6e0ada13ba799bf248e98700000000");
Transaction transaction = new Transaction(params, bytes);
TransactionOutput output = transaction.getOutput(1);
Transaction spendTx = new Transaction(params);
Address address = new Address(params, "n3CFiCmBXVt5d3HXKQ15EFZyhPz4yj5F3H");
Script outputScript = ScriptBuilder.createOutputScript(address);
spendTx.addOutput(output.getValue(), outputScript);
spendTx.addInput(output);
Sha256Hash sighash = spendTx.hashForSignature(0, multisigScript, SigHash.ALL, false);
ECKey.ECDSASignature party1Signature = key1.sign(sighash);
ECKey.ECDSASignature party2Signature = key2.sign(sighash);
TransactionSignature party1TransactionSignature =
new TransactionSignature(party1Signature, SigHash.ALL, false);
TransactionSignature party2TransactionSignature =
new TransactionSignature(party2Signature, SigHash.ALL, false);
// Create p2sh multisig input script
Script inputScript =
ScriptBuilder.createP2SHMultiSigInputScript(
ImmutableList.of(party1TransactionSignature, party2TransactionSignature),
multisigScript.getProgram());
// Assert that the input script contains 4 chunks
assertTrue(inputScript.getChunks().size() == 4);
// Assert that the input script created contains the original multisig
// script as the last chunk
ScriptChunk scriptChunk = inputScript.getChunks().get(inputScript.getChunks().size() - 1);
Assert.assertArrayEquals(scriptChunk.data, multisigScript.getProgram());
// Create regular multisig input script
inputScript =
ScriptBuilder.createMultiSigInputScript(
ImmutableList.of(party1TransactionSignature, party2TransactionSignature));
// Assert that the input script only contains 3 chunks
assertTrue(inputScript.getChunks().size() == 3);
// Assert that the input script created does not end with the original
// multisig script
scriptChunk = inputScript.getChunks().get(inputScript.getChunks().size() - 1);
Assert.assertThat(scriptChunk.data, IsNot.not(IsEqual.equalTo(multisigScript.getProgram())));
}