450 lines
22 KiB
Python
Executable file
450 lines
22 KiB
Python
Executable file
#!/usr/bin/env python3
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# Copyright (c) 2015-2019 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test CSV soft fork activation.
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This soft fork will activate the following BIPS:
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BIP 68 - nSequence relative lock times
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BIP 112 - CHECKSEQUENCEVERIFY
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BIP 113 - MedianTimePast semantics for nLockTime
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mine 82 blocks whose coinbases will be used to generate inputs for our tests
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mine 345 blocks and seed block chain with the 82 inputs will use for our tests at height 427
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mine 2 blocks and verify soft fork not yet activated
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mine 1 block and test that soft fork is activated (rules enforced for next block)
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Test BIP 113 is enforced
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Mine 4 blocks so next height is 580 and test BIP 68 is enforced for time and height
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Mine 1 block so next height is 581 and test BIP 68 now passes time but not height
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Mine 1 block so next height is 582 and test BIP 68 now passes time and height
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Test that BIP 112 is enforced
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Various transactions will be used to test that the BIPs rules are not enforced before the soft fork activates
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And that after the soft fork activates transactions pass and fail as they should according to the rules.
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For each BIP, transactions of versions 1 and 2 will be tested.
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----------------
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BIP 113:
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bip113tx - modify the nLocktime variable
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BIP 68:
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bip68txs - 16 txs with nSequence relative locktime of 10 with various bits set as per the relative_locktimes below
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BIP 112:
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bip112txs_vary_nSequence - 16 txs with nSequence relative_locktimes of 10 evaluated against 10 OP_CSV OP_DROP
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bip112txs_vary_nSequence_9 - 16 txs with nSequence relative_locktimes of 9 evaluated against 10 OP_CSV OP_DROP
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bip112txs_vary_OP_CSV - 16 txs with nSequence = 10 evaluated against varying {relative_locktimes of 10} OP_CSV OP_DROP
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bip112txs_vary_OP_CSV_9 - 16 txs with nSequence = 9 evaluated against varying {relative_locktimes of 10} OP_CSV OP_DROP
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bip112tx_special - test negative argument to OP_CSV
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"""
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from decimal import Decimal
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from itertools import product
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from io import BytesIO
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import time
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from test_framework.blocktools import create_coinbase, create_block, create_transaction
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from test_framework.messages import ToHex, CTransaction
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from test_framework.mininode import P2PDataStore
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from test_framework.script import (
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CScript,
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OP_CHECKSEQUENCEVERIFY,
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OP_DROP,
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)
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import (
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assert_equal,
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hex_str_to_bytes,
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softfork_active,
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)
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BASE_RELATIVE_LOCKTIME = 10
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CSV_ACTIVATION_HEIGHT = 432
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SEQ_DISABLE_FLAG = 1 << 31
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SEQ_RANDOM_HIGH_BIT = 1 << 25
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SEQ_TYPE_FLAG = 1 << 22
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SEQ_RANDOM_LOW_BIT = 1 << 18
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def relative_locktime(sdf, srhb, stf, srlb):
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"""Returns a locktime with certain bits set."""
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locktime = BASE_RELATIVE_LOCKTIME
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if sdf:
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locktime |= SEQ_DISABLE_FLAG
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if srhb:
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locktime |= SEQ_RANDOM_HIGH_BIT
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if stf:
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locktime |= SEQ_TYPE_FLAG
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if srlb:
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locktime |= SEQ_RANDOM_LOW_BIT
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return locktime
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def all_rlt_txs(txs):
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return [tx['tx'] for tx in txs]
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def sign_transaction(node, unsignedtx):
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rawtx = ToHex(unsignedtx)
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signresult = node.signrawtransactionwithwallet(rawtx)
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tx = CTransaction()
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f = BytesIO(hex_str_to_bytes(signresult['hex']))
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tx.deserialize(f)
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return tx
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def create_bip112special(node, input, txversion, address):
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tx = create_transaction(node, input, address, amount=Decimal("49.98"))
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tx.nVersion = txversion
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signtx = sign_transaction(node, tx)
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signtx.vin[0].scriptSig = CScript([-1, OP_CHECKSEQUENCEVERIFY, OP_DROP] + list(CScript(signtx.vin[0].scriptSig)))
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return signtx
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def send_generic_input_tx(node, coinbases, address):
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return node.sendrawtransaction(ToHex(sign_transaction(node, create_transaction(node, node.getblock(coinbases.pop())['tx'][0], address, amount=Decimal("0.996")))))
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def create_bip68txs(node, bip68inputs, txversion, address, locktime_delta=0):
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"""Returns a list of bip68 transactions with different bits set."""
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txs = []
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assert len(bip68inputs) >= 16
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for i, (sdf, srhb, stf, srlb) in enumerate(product(*[[True, False]] * 4)):
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locktime = relative_locktime(sdf, srhb, stf, srlb)
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tx = create_transaction(node, bip68inputs[i], address, amount=Decimal("0.996"))
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tx.nVersion = txversion
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tx.vin[0].nSequence = locktime + locktime_delta
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tx = sign_transaction(node, tx)
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tx.rehash()
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txs.append({'tx': tx, 'sdf': sdf, 'stf': stf})
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return txs
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def create_bip112txs(node, bip112inputs, varyOP_CSV, txversion, address, locktime_delta=0):
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"""Returns a list of bip68 transactions with different bits set."""
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txs = []
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assert len(bip112inputs) >= 16
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for i, (sdf, srhb, stf, srlb) in enumerate(product(*[[True, False]] * 4)):
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locktime = relative_locktime(sdf, srhb, stf, srlb)
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tx = create_transaction(node, bip112inputs[i], address, amount=Decimal("0.996"))
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if (varyOP_CSV): # if varying OP_CSV, nSequence is fixed
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tx.vin[0].nSequence = BASE_RELATIVE_LOCKTIME + locktime_delta
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else: # vary nSequence instead, OP_CSV is fixed
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tx.vin[0].nSequence = locktime + locktime_delta
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tx.nVersion = txversion
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signtx = sign_transaction(node, tx)
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if (varyOP_CSV):
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signtx.vin[0].scriptSig = CScript([locktime, OP_CHECKSEQUENCEVERIFY, OP_DROP] + list(CScript(signtx.vin[0].scriptSig)))
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else:
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signtx.vin[0].scriptSig = CScript([BASE_RELATIVE_LOCKTIME, OP_CHECKSEQUENCEVERIFY, OP_DROP] + list(CScript(signtx.vin[0].scriptSig)))
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tx.rehash()
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txs.append({'tx': signtx, 'sdf': sdf, 'stf': stf})
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return txs
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class BIP68_112_113Test(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 1
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self.setup_clean_chain = True
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self.extra_args = [['-whitelist=127.0.0.1', '-blockversion=4', '-addresstype=legacy']]
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def skip_test_if_missing_module(self):
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self.skip_if_no_wallet()
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def generate_blocks(self, number):
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test_blocks = []
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for i in range(number):
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block = self.create_test_block([])
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test_blocks.append(block)
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self.last_block_time += 600
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self.tip = block.sha256
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self.tipheight += 1
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return test_blocks
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def create_test_block(self, txs):
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block = create_block(self.tip, create_coinbase(self.tipheight + 1), self.last_block_time + 600)
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block.nVersion = 4
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block.vtx.extend(txs)
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block.hashMerkleRoot = block.calc_merkle_root()
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block.rehash()
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block.solve()
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return block
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def send_blocks(self, blocks, success=True):
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"""Sends blocks to test node. Syncs and verifies that tip has advanced to most recent block.
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Call with success = False if the tip shouldn't advance to the most recent block."""
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self.nodes[0].p2p.send_blocks_and_test(blocks, self.nodes[0], success=success)
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def run_test(self):
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self.nodes[0].add_p2p_connection(P2PDataStore())
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self.log.info("Generate blocks in the past for coinbase outputs.")
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long_past_time = int(time.time()) - 600 * 1000 # enough to build up to 1000 blocks 10 minutes apart without worrying about getting into the future
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self.nodes[0].setmocktime(long_past_time - 100) # enough so that the generated blocks will still all be before long_past_time
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self.coinbase_blocks = self.nodes[0].generate(1 + 16 + 2 * 32 + 1) # 82 blocks generated for inputs
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self.nodes[0].setmocktime(0) # set time back to present so yielded blocks aren't in the future as we advance last_block_time
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self.tipheight = 82 # height of the next block to build
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self.last_block_time = long_past_time
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self.tip = int(self.nodes[0].getbestblockhash(), 16)
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self.nodeaddress = self.nodes[0].getnewaddress()
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# Activation height is hardcoded
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test_blocks = self.generate_blocks(345)
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self.send_blocks(test_blocks)
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assert not softfork_active(self.nodes[0], 'csv')
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# Inputs at height = 431
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#
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# Put inputs for all tests in the chain at height 431 (tip now = 430) (time increases by 600s per block)
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# Note we reuse inputs for v1 and v2 txs so must test these separately
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# 16 normal inputs
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bip68inputs = []
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for i in range(16):
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bip68inputs.append(send_generic_input_tx(self.nodes[0], self.coinbase_blocks, self.nodeaddress))
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# 2 sets of 16 inputs with 10 OP_CSV OP_DROP (actually will be prepended to spending scriptSig)
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bip112basicinputs = []
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for j in range(2):
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inputs = []
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for i in range(16):
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inputs.append(send_generic_input_tx(self.nodes[0], self.coinbase_blocks, self.nodeaddress))
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bip112basicinputs.append(inputs)
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# 2 sets of 16 varied inputs with (relative_lock_time) OP_CSV OP_DROP (actually will be prepended to spending scriptSig)
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bip112diverseinputs = []
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for j in range(2):
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inputs = []
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for i in range(16):
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inputs.append(send_generic_input_tx(self.nodes[0], self.coinbase_blocks, self.nodeaddress))
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bip112diverseinputs.append(inputs)
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# 1 special input with -1 OP_CSV OP_DROP (actually will be prepended to spending scriptSig)
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bip112specialinput = send_generic_input_tx(self.nodes[0], self.coinbase_blocks, self.nodeaddress)
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# 1 normal input
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bip113input = send_generic_input_tx(self.nodes[0], self.coinbase_blocks, self.nodeaddress)
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self.nodes[0].setmocktime(self.last_block_time + 600)
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inputblockhash = self.nodes[0].generate(1)[0] # 1 block generated for inputs to be in chain at height 431
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self.nodes[0].setmocktime(0)
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self.tip = int(inputblockhash, 16)
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self.tipheight += 1
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self.last_block_time += 600
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assert_equal(len(self.nodes[0].getblock(inputblockhash, True)["tx"]), 82 + 1)
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# 2 more version 4 blocks
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test_blocks = self.generate_blocks(2)
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self.send_blocks(test_blocks)
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assert_equal(self.tipheight, CSV_ACTIVATION_HEIGHT - 2)
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self.log.info("Height = {}, CSV not yet active (will activate for block {}, not {})".format(self.tipheight, CSV_ACTIVATION_HEIGHT, CSV_ACTIVATION_HEIGHT - 1))
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assert not softfork_active(self.nodes[0], 'csv')
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# Test both version 1 and version 2 transactions for all tests
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# BIP113 test transaction will be modified before each use to put in appropriate block time
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bip113tx_v1 = create_transaction(self.nodes[0], bip113input, self.nodeaddress, amount=Decimal("49.98"))
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bip113tx_v1.vin[0].nSequence = 0xFFFFFFFE
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bip113tx_v1.nVersion = 1
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bip113tx_v2 = create_transaction(self.nodes[0], bip113input, self.nodeaddress, amount=Decimal("49.98"))
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bip113tx_v2.vin[0].nSequence = 0xFFFFFFFE
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bip113tx_v2.nVersion = 2
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# For BIP68 test all 16 relative sequence locktimes
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bip68txs_v1 = create_bip68txs(self.nodes[0], bip68inputs, 1, self.nodeaddress)
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bip68txs_v2 = create_bip68txs(self.nodes[0], bip68inputs, 2, self.nodeaddress)
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# For BIP112 test:
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# 16 relative sequence locktimes of 10 against 10 OP_CSV OP_DROP inputs
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bip112txs_vary_nSequence_v1 = create_bip112txs(self.nodes[0], bip112basicinputs[0], False, 1, self.nodeaddress)
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bip112txs_vary_nSequence_v2 = create_bip112txs(self.nodes[0], bip112basicinputs[0], False, 2, self.nodeaddress)
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# 16 relative sequence locktimes of 9 against 10 OP_CSV OP_DROP inputs
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bip112txs_vary_nSequence_9_v1 = create_bip112txs(self.nodes[0], bip112basicinputs[1], False, 1, self.nodeaddress, -1)
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bip112txs_vary_nSequence_9_v2 = create_bip112txs(self.nodes[0], bip112basicinputs[1], False, 2, self.nodeaddress, -1)
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# sequence lock time of 10 against 16 (relative_lock_time) OP_CSV OP_DROP inputs
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bip112txs_vary_OP_CSV_v1 = create_bip112txs(self.nodes[0], bip112diverseinputs[0], True, 1, self.nodeaddress)
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bip112txs_vary_OP_CSV_v2 = create_bip112txs(self.nodes[0], bip112diverseinputs[0], True, 2, self.nodeaddress)
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# sequence lock time of 9 against 16 (relative_lock_time) OP_CSV OP_DROP inputs
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bip112txs_vary_OP_CSV_9_v1 = create_bip112txs(self.nodes[0], bip112diverseinputs[1], True, 1, self.nodeaddress, -1)
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bip112txs_vary_OP_CSV_9_v2 = create_bip112txs(self.nodes[0], bip112diverseinputs[1], True, 2, self.nodeaddress, -1)
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# -1 OP_CSV OP_DROP input
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bip112tx_special_v1 = create_bip112special(self.nodes[0], bip112specialinput, 1, self.nodeaddress)
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bip112tx_special_v2 = create_bip112special(self.nodes[0], bip112specialinput, 2, self.nodeaddress)
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self.log.info("TESTING")
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self.log.info("Pre-Soft Fork Tests. All txs should pass.")
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self.log.info("Test version 1 txs")
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success_txs = []
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# add BIP113 tx and -1 CSV tx
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bip113tx_v1.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
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bip113signed1 = sign_transaction(self.nodes[0], bip113tx_v1)
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success_txs.append(bip113signed1)
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success_txs.append(bip112tx_special_v1)
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# add BIP 68 txs
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success_txs.extend(all_rlt_txs(bip68txs_v1))
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# add BIP 112 with seq=10 txs
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success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_v1))
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success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_v1))
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# try BIP 112 with seq=9 txs
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success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_9_v1))
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success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_9_v1))
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self.send_blocks([self.create_test_block(success_txs)])
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
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self.log.info("Test version 2 txs")
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success_txs = []
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# add BIP113 tx and -1 CSV tx
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bip113tx_v2.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
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bip113signed2 = sign_transaction(self.nodes[0], bip113tx_v2)
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success_txs.append(bip113signed2)
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success_txs.append(bip112tx_special_v2)
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# add BIP 68 txs
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success_txs.extend(all_rlt_txs(bip68txs_v2))
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# add BIP 112 with seq=10 txs
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success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_v2))
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success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_v2))
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# try BIP 112 with seq=9 txs
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success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_9_v2))
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success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_9_v2))
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self.send_blocks([self.create_test_block(success_txs)])
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
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# 1 more version 4 block to get us to height 432 so the fork should now be active for the next block
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assert not softfork_active(self.nodes[0], 'csv')
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test_blocks = self.generate_blocks(1)
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self.send_blocks(test_blocks)
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assert softfork_active(self.nodes[0], 'csv')
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self.log.info("Post-Soft Fork Tests.")
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self.log.info("BIP 113 tests")
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# BIP 113 tests should now fail regardless of version number if nLockTime isn't satisfied by new rules
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bip113tx_v1.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
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bip113signed1 = sign_transaction(self.nodes[0], bip113tx_v1)
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bip113tx_v2.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
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bip113signed2 = sign_transaction(self.nodes[0], bip113tx_v2)
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for bip113tx in [bip113signed1, bip113signed2]:
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self.send_blocks([self.create_test_block([bip113tx])], success=False)
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# BIP 113 tests should now pass if the locktime is < MTP
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bip113tx_v1.nLockTime = self.last_block_time - 600 * 5 - 1 # < MTP of prior block
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bip113signed1 = sign_transaction(self.nodes[0], bip113tx_v1)
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bip113tx_v2.nLockTime = self.last_block_time - 600 * 5 - 1 # < MTP of prior block
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bip113signed2 = sign_transaction(self.nodes[0], bip113tx_v2)
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for bip113tx in [bip113signed1, bip113signed2]:
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self.send_blocks([self.create_test_block([bip113tx])])
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
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# Next block height = 437 after 4 blocks of random version
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test_blocks = self.generate_blocks(4)
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self.send_blocks(test_blocks)
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self.log.info("BIP 68 tests")
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self.log.info("Test version 1 txs - all should still pass")
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success_txs = []
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success_txs.extend(all_rlt_txs(bip68txs_v1))
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self.send_blocks([self.create_test_block(success_txs)])
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
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self.log.info("Test version 2 txs")
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# All txs with SEQUENCE_LOCKTIME_DISABLE_FLAG set pass
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bip68success_txs = [tx['tx'] for tx in bip68txs_v2 if tx['sdf']]
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self.send_blocks([self.create_test_block(bip68success_txs)])
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
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# All txs without flag fail as we are at delta height = 8 < 10 and delta time = 8 * 600 < 10 * 512
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bip68timetxs = [tx['tx'] for tx in bip68txs_v2 if not tx['sdf'] and tx['stf']]
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for tx in bip68timetxs:
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self.send_blocks([self.create_test_block([tx])], success=False)
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bip68heighttxs = [tx['tx'] for tx in bip68txs_v2 if not tx['sdf'] and not tx['stf']]
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for tx in bip68heighttxs:
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self.send_blocks([self.create_test_block([tx])], success=False)
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# Advance one block to 438
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test_blocks = self.generate_blocks(1)
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self.send_blocks(test_blocks)
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# Height txs should fail and time txs should now pass 9 * 600 > 10 * 512
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bip68success_txs.extend(bip68timetxs)
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self.send_blocks([self.create_test_block(bip68success_txs)])
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
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for tx in bip68heighttxs:
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self.send_blocks([self.create_test_block([tx])], success=False)
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# Advance one block to 439
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test_blocks = self.generate_blocks(1)
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self.send_blocks(test_blocks)
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# All BIP 68 txs should pass
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bip68success_txs.extend(bip68heighttxs)
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self.send_blocks([self.create_test_block(bip68success_txs)])
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
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self.log.info("BIP 112 tests")
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self.log.info("Test version 1 txs")
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# -1 OP_CSV tx should fail
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self.send_blocks([self.create_test_block([bip112tx_special_v1])], success=False)
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# If SEQUENCE_LOCKTIME_DISABLE_FLAG is set in argument to OP_CSV, version 1 txs should still pass
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success_txs = [tx['tx'] for tx in bip112txs_vary_OP_CSV_v1 if tx['sdf']]
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success_txs += [tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v1 if tx['sdf']]
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self.send_blocks([self.create_test_block(success_txs)])
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
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# If SEQUENCE_LOCKTIME_DISABLE_FLAG is unset in argument to OP_CSV, version 1 txs should now fail
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fail_txs = all_rlt_txs(bip112txs_vary_nSequence_v1)
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fail_txs += all_rlt_txs(bip112txs_vary_nSequence_9_v1)
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fail_txs += [tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v1 if not tx['sdf']]
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fail_txs += [tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v1 if not tx['sdf']]
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for tx in fail_txs:
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self.send_blocks([self.create_test_block([tx])], success=False)
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self.log.info("Test version 2 txs")
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# -1 OP_CSV tx should fail
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self.send_blocks([self.create_test_block([bip112tx_special_v2])], success=False)
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|
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# If SEQUENCE_LOCKTIME_DISABLE_FLAG is set in argument to OP_CSV, version 2 txs should pass (all sequence locks are met)
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success_txs = [tx['tx'] for tx in bip112txs_vary_OP_CSV_v2 if tx['sdf']]
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success_txs += [tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v2 if tx['sdf']]
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self.send_blocks([self.create_test_block(success_txs)])
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
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|
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# SEQUENCE_LOCKTIME_DISABLE_FLAG is unset in argument to OP_CSV for all remaining txs ##
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|
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# All txs with nSequence 9 should fail either due to earlier mismatch or failing the CSV check
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fail_txs = all_rlt_txs(bip112txs_vary_nSequence_9_v2)
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fail_txs += [tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v2 if not tx['sdf']]
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for tx in fail_txs:
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self.send_blocks([self.create_test_block([tx])], success=False)
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|
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# If SEQUENCE_LOCKTIME_DISABLE_FLAG is set in nSequence, tx should fail
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fail_txs = [tx['tx'] for tx in bip112txs_vary_nSequence_v2 if tx['sdf']]
|
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for tx in fail_txs:
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self.send_blocks([self.create_test_block([tx])], success=False)
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# If sequencelock types mismatch, tx should fail
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fail_txs = [tx['tx'] for tx in bip112txs_vary_nSequence_v2 if not tx['sdf'] and tx['stf']]
|
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fail_txs += [tx['tx'] for tx in bip112txs_vary_OP_CSV_v2 if not tx['sdf'] and tx['stf']]
|
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for tx in fail_txs:
|
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self.send_blocks([self.create_test_block([tx])], success=False)
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|
|
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# Remaining txs should pass, just test masking works properly
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success_txs = [tx['tx'] for tx in bip112txs_vary_nSequence_v2 if not tx['sdf'] and not tx['stf']]
|
|
success_txs += [tx['tx'] for tx in bip112txs_vary_OP_CSV_v2 if not tx['sdf'] and not tx['stf']]
|
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self.send_blocks([self.create_test_block(success_txs)])
|
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
|
|
|
|
# Additional test, of checking that comparison of two time types works properly
|
|
time_txs = []
|
|
for tx in [tx['tx'] for tx in bip112txs_vary_OP_CSV_v2 if not tx['sdf'] and tx['stf']]:
|
|
tx.vin[0].nSequence = BASE_RELATIVE_LOCKTIME | SEQ_TYPE_FLAG
|
|
signtx = sign_transaction(self.nodes[0], tx)
|
|
time_txs.append(signtx)
|
|
|
|
self.send_blocks([self.create_test_block(time_txs)])
|
|
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
|
|
|
|
# TODO: Test empty stack fails
|
|
|
|
if __name__ == '__main__':
|
|
BIP68_112_113Test().main()
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