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-rwxr-xr-xqa/rpc-tests/bip68-sequence.py388
-rwxr-xr-xqa/rpc-tests/test_framework/mininode.py8
2 files changed, 396 insertions, 0 deletions
diff --git a/qa/rpc-tests/bip68-sequence.py b/qa/rpc-tests/bip68-sequence.py
new file mode 100755
index 0000000000..45b4f22c0b
--- /dev/null
+++ b/qa/rpc-tests/bip68-sequence.py
@@ -0,0 +1,388 @@
+#!/usr/bin/env python2
+# Copyright (c) 2014-2015 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#
+# Test BIP68 implementation (mempool only)
+#
+
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import *
+from test_framework.script import *
+from test_framework.mininode import *
+from test_framework.blocktools import *
+
+COIN = 100000000
+SEQUENCE_LOCKTIME_DISABLE_FLAG = (1<<31)
+SEQUENCE_LOCKTIME_TYPE_FLAG = (1<<22) # this means use time (0 means height)
+SEQUENCE_LOCKTIME_GRANULARITY = 9 # this is a bit-shift
+SEQUENCE_LOCKTIME_MASK = 0x0000ffff
+
+# RPC error for non-BIP68 final transactions
+NOT_FINAL_ERROR = "64: non-BIP68-final"
+
+class BIP68Test(BitcoinTestFramework):
+
+ def setup_network(self):
+ self.nodes = []
+ self.nodes.append(start_node(0, self.options.tmpdir, ["-debug", "-blockprioritysize=0"]))
+ self.is_network_split = False
+ self.relayfee = self.nodes[0].getnetworkinfo()["relayfee"]
+
+ def run_test(self):
+ # Generate some coins
+ self.nodes[0].generate(110)
+
+ print "Running test disable flag"
+ self.test_disable_flag()
+
+ print "Running test sequence-lock-confirmed-inputs"
+ self.test_sequence_lock_confirmed_inputs()
+
+ print "Running test sequence-lock-unconfirmed-inputs"
+ self.test_sequence_lock_unconfirmed_inputs()
+
+ # This test needs to change when BIP68 becomes consensus
+ print "Running test BIP68 not consensus"
+ self.test_bip68_not_consensus()
+
+ print "Passed\n"
+
+ # Test that BIP68 is not in effect if tx version is 1, or if
+ # the first sequence bit is set.
+ def test_disable_flag(self):
+ # Create some unconfirmed inputs
+ new_addr = self.nodes[0].getnewaddress()
+ self.nodes[0].sendtoaddress(new_addr, 2) # send 2 BTC
+
+ utxos = self.nodes[0].listunspent(0, 0)
+ assert(len(utxos) > 0)
+
+ utxo = utxos[0]
+
+ tx1 = CTransaction()
+ value = satoshi_round(utxo["amount"] - self.relayfee)*COIN
+
+ # Check that the disable flag disables relative locktime.
+ # If sequence locks were used, this would require 1 block for the
+ # input to mature.
+ sequence_value = SEQUENCE_LOCKTIME_DISABLE_FLAG | 1
+ tx1.vin = [CTxIn(COutPoint(int(utxo["txid"], 16), utxo["vout"]), nSequence=sequence_value)]
+ tx1.vout = [CTxOut(value, CScript([b'a']))]
+
+ tx1_signed = self.nodes[0].signrawtransaction(ToHex(tx1))["hex"]
+ tx1_id = self.nodes[0].sendrawtransaction(tx1_signed)
+ tx1_id = int(tx1_id, 16)
+
+ # This transaction will enable sequence-locks, so this transaction should
+ # fail
+ tx2 = CTransaction()
+ tx2.nVersion = 2
+ sequence_value = sequence_value & 0x7fffffff
+ tx2.vin = [CTxIn(COutPoint(tx1_id, 0), nSequence=sequence_value)]
+ tx2.vout = [CTxOut(int(value-self.relayfee*COIN), CScript([b'a']))]
+ tx2.rehash()
+
+ try:
+ self.nodes[0].sendrawtransaction(ToHex(tx2))
+ except JSONRPCException as exp:
+ assert_equal(exp.error["message"], NOT_FINAL_ERROR)
+ else:
+ assert(False)
+
+ # Setting the version back down to 1 should disable the sequence lock,
+ # so this should be accepted.
+ tx2.nVersion = 1
+
+ self.nodes[0].sendrawtransaction(ToHex(tx2))
+
+ # Calculate the median time past of a prior block ("confirmations" before
+ # the current tip).
+ def get_median_time_past(self, confirmations):
+ block_hash = self.nodes[0].getblockhash(self.nodes[0].getblockcount()-confirmations)
+ return self.nodes[0].getblockheader(block_hash)["mediantime"]
+
+ # Test that sequence locks are respected for transactions spending confirmed inputs.
+ def test_sequence_lock_confirmed_inputs(self):
+ # Create lots of confirmed utxos, and use them to generate lots of random
+ # transactions.
+ max_outputs = 50
+ addresses = []
+ while len(addresses) < max_outputs:
+ addresses.append(self.nodes[0].getnewaddress())
+ while len(self.nodes[0].listunspent()) < 200:
+ import random
+ random.shuffle(addresses)
+ num_outputs = random.randint(1, max_outputs)
+ outputs = {}
+ for i in xrange(num_outputs):
+ outputs[addresses[i]] = random.randint(1, 20)*0.01
+ self.nodes[0].sendmany("", outputs)
+ self.nodes[0].generate(1)
+
+ utxos = self.nodes[0].listunspent()
+
+ # Try creating a lot of random transactions.
+ # Each time, choose a random number of inputs, and randomly set
+ # some of those inputs to be sequence locked (and randomly choose
+ # between height/time locking). Small random chance of making the locks
+ # all pass.
+ for i in xrange(400):
+ # Randomly choose up to 10 inputs
+ num_inputs = random.randint(1, 10)
+ random.shuffle(utxos)
+
+ # Track whether any sequence locks used should fail
+ should_pass = True
+
+ # Track whether this transaction was built with sequence locks
+ using_sequence_locks = False
+
+ tx = CTransaction()
+ tx.nVersion = 2
+ value = 0
+ for j in xrange(num_inputs):
+ sequence_value = 0xfffffffe # this disables sequence locks
+
+ # 50% chance we enable sequence locks
+ if random.randint(0,1):
+ using_sequence_locks = True
+
+ # 10% of the time, make the input sequence value pass
+ input_will_pass = (random.randint(1,10) == 1)
+ sequence_value = utxos[j]["confirmations"]
+ if not input_will_pass:
+ sequence_value += 1
+ should_pass = False
+
+ # Figure out what the median-time-past was for the confirmed input
+ # Note that if an input has N confirmations, we're going back N blocks
+ # from the tip so that we're looking up MTP of the block
+ # PRIOR to the one the input appears in, as per the BIP68 spec.
+ orig_time = self.get_median_time_past(utxos[j]["confirmations"])
+ cur_time = self.get_median_time_past(0) # MTP of the tip
+
+ # can only timelock this input if it's not too old -- otherwise use height
+ can_time_lock = True
+ if ((cur_time - orig_time) >> SEQUENCE_LOCKTIME_GRANULARITY) >= SEQUENCE_LOCKTIME_MASK:
+ can_time_lock = False
+
+ # if time-lockable, then 50% chance we make this a time lock
+ if random.randint(0,1) and can_time_lock:
+ # Find first time-lock value that fails, or latest one that succeeds
+ time_delta = sequence_value << SEQUENCE_LOCKTIME_GRANULARITY
+ if input_will_pass and time_delta > cur_time - orig_time:
+ sequence_value = ((cur_time - orig_time) >> SEQUENCE_LOCKTIME_GRANULARITY)
+ elif (not input_will_pass and time_delta <= cur_time - orig_time):
+ sequence_value = ((cur_time - orig_time) >> SEQUENCE_LOCKTIME_GRANULARITY)+1
+ sequence_value |= SEQUENCE_LOCKTIME_TYPE_FLAG
+ tx.vin.append(CTxIn(COutPoint(int(utxos[j]["txid"], 16), utxos[j]["vout"]), nSequence=sequence_value))
+ value += utxos[j]["amount"]*COIN
+ # Overestimate the size of the tx - signatures should be less than 120 bytes, and leave 50 for the output
+ tx_size = len(ToHex(tx))/2 + 120*num_inputs + 50
+ tx.vout.append(CTxOut(value-self.relayfee*tx_size*COIN/1000, CScript([b'a'])))
+ rawtx = self.nodes[0].signrawtransaction(ToHex(tx))["hex"]
+
+ try:
+ self.nodes[0].sendrawtransaction(rawtx)
+ except JSONRPCException as exp:
+ assert(not should_pass and using_sequence_locks)
+ assert_equal(exp.error["message"], NOT_FINAL_ERROR)
+ else:
+ assert(should_pass or not using_sequence_locks)
+ # Recalculate utxos if we successfully sent the transaction
+ utxos = self.nodes[0].listunspent()
+
+ # Test that sequence locks on unconfirmed inputs must have nSequence
+ # height or time of 0 to be accepted.
+ # Then test that BIP68-invalid transactions are removed from the mempool
+ # after a reorg.
+ def test_sequence_lock_unconfirmed_inputs(self):
+ # Store height so we can easily reset the chain at the end of the test
+ cur_height = self.nodes[0].getblockcount()
+
+ utxos = self.nodes[0].listunspent()
+
+ # Create a mempool tx.
+ txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 2)
+ tx1 = FromHex(CTransaction(), self.nodes[0].getrawtransaction(txid))
+ tx1.rehash()
+
+ # Anyone-can-spend mempool tx.
+ # Sequence lock of 0 should pass.
+ tx2 = CTransaction()
+ tx2.nVersion = 2
+ tx2.vin = [CTxIn(COutPoint(tx1.sha256, 0), nSequence=0)]
+ tx2.vout = [CTxOut(int(tx1.vout[0].nValue - self.relayfee*COIN), CScript([b'a']))]
+ tx2_raw = self.nodes[0].signrawtransaction(ToHex(tx2))["hex"]
+ tx2 = FromHex(tx2, tx2_raw)
+ tx2.rehash()
+
+ self.nodes[0].sendrawtransaction(tx2_raw)
+
+ # Create a spend of the 0th output of orig_tx with a sequence lock
+ # of 1, and test what happens when submitting.
+ # orig_tx.vout[0] must be an anyone-can-spend output
+ def test_nonzero_locks(orig_tx, node, relayfee, use_height_lock):
+ sequence_value = 1
+ if not use_height_lock:
+ sequence_value |= SEQUENCE_LOCKTIME_TYPE_FLAG
+
+ tx = CTransaction()
+ tx.nVersion = 2
+ tx.vin = [CTxIn(COutPoint(orig_tx.sha256, 0), nSequence=sequence_value)]
+ tx.vout = [CTxOut(int(orig_tx.vout[0].nValue - relayfee*COIN), CScript([b'a']))]
+ tx.rehash()
+
+ try:
+ node.sendrawtransaction(ToHex(tx))
+ except JSONRPCException as exp:
+ assert_equal(exp.error["message"], NOT_FINAL_ERROR)
+ assert(orig_tx.hash in node.getrawmempool())
+ else:
+ # orig_tx must not be in mempool
+ assert(orig_tx.hash not in node.getrawmempool())
+ return tx
+
+ test_nonzero_locks(tx2, self.nodes[0], self.relayfee, use_height_lock=True)
+ test_nonzero_locks(tx2, self.nodes[0], self.relayfee, use_height_lock=False)
+
+ # Now mine some blocks, but make sure tx2 doesn't get mined.
+ # Use prioritisetransaction to lower the effective feerate to 0
+ self.nodes[0].prioritisetransaction(tx2.hash, -1e15, int(-self.relayfee*COIN))
+ cur_time = int(time.time())
+ for i in xrange(10):
+ self.nodes[0].setmocktime(cur_time + 600)
+ self.nodes[0].generate(1)
+ cur_time += 600
+
+ assert(tx2.hash in self.nodes[0].getrawmempool())
+
+ test_nonzero_locks(tx2, self.nodes[0], self.relayfee, use_height_lock=True)
+ test_nonzero_locks(tx2, self.nodes[0], self.relayfee, use_height_lock=False)
+
+ # Mine tx2, and then try again
+ self.nodes[0].prioritisetransaction(tx2.hash, 1e15, int(self.relayfee*COIN))
+
+ # Advance the time on the node so that we can test timelocks
+ self.nodes[0].setmocktime(cur_time+600)
+ self.nodes[0].generate(1)
+ assert(tx2.hash not in self.nodes[0].getrawmempool())
+
+ # Now that tx2 is not in the mempool, a sequence locked spend should
+ # succeed
+ tx3 = test_nonzero_locks(tx2, self.nodes[0], self.relayfee, use_height_lock=False)
+ assert(tx3.hash in self.nodes[0].getrawmempool())
+
+ self.nodes[0].generate(1)
+ assert(tx3.hash not in self.nodes[0].getrawmempool())
+
+ # One more test, this time using height locks
+ tx4 = test_nonzero_locks(tx3, self.nodes[0], self.relayfee, use_height_lock=True)
+ assert(tx4.hash in self.nodes[0].getrawmempool())
+
+ # Now try combining confirmed and unconfirmed inputs
+ tx5 = test_nonzero_locks(tx4, self.nodes[0], self.relayfee, use_height_lock=True)
+ assert(tx5.hash not in self.nodes[0].getrawmempool())
+
+ tx5.vin.append(CTxIn(COutPoint(int(utxos[0]["txid"], 16), utxos[0]["vout"]), nSequence=1))
+ tx5.vout[0].nValue += int(utxos[0]["amount"]*COIN)
+ raw_tx5 = self.nodes[0].signrawtransaction(ToHex(tx5))["hex"]
+
+ try:
+ self.nodes[0].sendrawtransaction(raw_tx5)
+ except JSONRPCException as exp:
+ assert_equal(exp.error["message"], NOT_FINAL_ERROR)
+ else:
+ assert(False)
+
+ # Test mempool-BIP68 consistency after reorg
+ #
+ # State of the transactions in the last blocks:
+ # ... -> [ tx2 ] -> [ tx3 ]
+ # tip-1 tip
+ # And currently tx4 is in the mempool.
+ #
+ # If we invalidate the tip, tx3 should get added to the mempool, causing
+ # tx4 to be removed (fails sequence-lock).
+ self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
+ assert(tx4.hash not in self.nodes[0].getrawmempool())
+ assert(tx3.hash in self.nodes[0].getrawmempool())
+
+ # Now mine 2 empty blocks to reorg out the current tip (labeled tip-1 in
+ # diagram above).
+ # This would cause tx2 to be added back to the mempool, which in turn causes
+ # tx3 to be removed.
+ tip = int(self.nodes[0].getblockhash(self.nodes[0].getblockcount()-1), 16)
+ height = self.nodes[0].getblockcount()
+ for i in xrange(2):
+ block = create_block(tip, create_coinbase(height), cur_time)
+ block.nVersion = 3
+ block.rehash()
+ block.solve()
+ tip = block.sha256
+ height += 1
+ self.nodes[0].submitblock(ToHex(block))
+ cur_time += 1
+
+ mempool = self.nodes[0].getrawmempool()
+ assert(tx3.hash not in mempool)
+ assert(tx2.hash in mempool)
+
+ # Reset the chain and get rid of the mocktimed-blocks
+ self.nodes[0].setmocktime(0)
+ self.nodes[0].invalidateblock(self.nodes[0].getblockhash(cur_height+1))
+ self.nodes[0].generate(10)
+
+ # Make sure that BIP68 isn't being used to validate blocks.
+ def test_bip68_not_consensus(self):
+ txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 2)
+
+ tx1 = FromHex(CTransaction(), self.nodes[0].getrawtransaction(txid))
+ tx1.rehash()
+
+ # Make an anyone-can-spend transaction
+ tx2 = CTransaction()
+ tx2.nVersion = 1
+ tx2.vin = [CTxIn(COutPoint(tx1.sha256, 0), nSequence=0)]
+ tx2.vout = [CTxOut(int(tx1.vout[0].nValue - self.relayfee*COIN), CScript([b'a']))]
+
+ # sign tx2
+ tx2_raw = self.nodes[0].signrawtransaction(ToHex(tx2))["hex"]
+ tx2 = FromHex(tx2, tx2_raw)
+ tx2.rehash()
+
+ self.nodes[0].sendrawtransaction(ToHex(tx2))
+
+ # Now make an invalid spend of tx2 according to BIP68
+ sequence_value = 100 # 100 block relative locktime
+
+ tx3 = CTransaction()
+ tx3.nVersion = 2
+ tx3.vin = [CTxIn(COutPoint(tx2.sha256, 0), nSequence=sequence_value)]
+ tx3.vout = [CTxOut(int(tx2.vout[0].nValue - self.relayfee*COIN), CScript([b'a']))]
+ tx3.rehash()
+
+ try:
+ self.nodes[0].sendrawtransaction(ToHex(tx3))
+ except JSONRPCException as exp:
+ assert_equal(exp.error["message"], NOT_FINAL_ERROR)
+ else:
+ assert(False)
+
+ # make a block that violates bip68; ensure that the tip updates
+ tip = int(self.nodes[0].getbestblockhash(), 16)
+ block = create_block(tip, create_coinbase(self.nodes[0].getblockcount()+1))
+ block.nVersion = 3
+ block.vtx.extend([tx1, tx2, tx3])
+ block.hashMerkleRoot = block.calc_merkle_root()
+ block.rehash()
+ block.solve()
+
+ self.nodes[0].submitblock(ToHex(block))
+ assert_equal(self.nodes[0].getbestblockhash(), block.hash)
+
+
+if __name__ == '__main__':
+ BIP68Test().main()
diff --git a/qa/rpc-tests/test_framework/mininode.py b/qa/rpc-tests/test_framework/mininode.py
index 9d0fb713a1..259dba71c3 100755
--- a/qa/rpc-tests/test_framework/mininode.py
+++ b/qa/rpc-tests/test_framework/mininode.py
@@ -230,6 +230,14 @@ def ser_int_vector(l):
r += struct.pack("<i", i)
return r
+# Deserialize from a hex string representation (eg from RPC)
+def FromHex(obj, hex_string):
+ obj.deserialize(cStringIO.StringIO(binascii.unhexlify(hex_string)))
+ return obj
+
+# Convert a binary-serializable object to hex (eg for submission via RPC)
+def ToHex(obj):
+ return binascii.hexlify(obj.serialize()).decode('utf-8')
# Objects that map to bitcoind objects, which can be serialized/deserialized
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-07 18:39:45 +0000