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158 lines
8.3 KiB
158 lines
8.3 KiB
#!/usr/bin/env python3
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# Copyright (c) 2016-2022 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 NULLDUMMY softfork.
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Connect to a single node.
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Generate 2 blocks (save the coinbases for later).
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Generate COINBASE_MATURITY (CB) more blocks to ensure the coinbases are mature.
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[Policy/Consensus] Check that NULLDUMMY compliant transactions are accepted in block CB + 3.
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[Policy] Check that non-NULLDUMMY transactions are rejected before activation.
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[Consensus] Check that the new NULLDUMMY rules are not enforced on block CB + 4.
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[Policy/Consensus] Check that the new NULLDUMMY rules are enforced on block CB + 5.
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"""
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import time
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from test_framework.address import address_to_scriptpubkey
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from test_framework.blocktools import (
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COINBASE_MATURITY,
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NORMAL_GBT_REQUEST_PARAMS,
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add_witness_commitment,
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create_block,
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)
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from test_framework.messages import (
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CTransaction,
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tx_from_hex,
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)
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from test_framework.script import (
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OP_0,
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OP_TRUE,
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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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assert_raises_rpc_error,
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)
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from test_framework.wallet import getnewdestination
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from test_framework.wallet_util import generate_keypair
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NULLDUMMY_ERROR = "mandatory-script-verify-flag-failed (Dummy CHECKMULTISIG argument must be zero)"
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def invalidate_nulldummy_tx(tx):
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"""Transform a NULLDUMMY compliant tx (i.e. scriptSig starts with OP_0)
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to be non-NULLDUMMY compliant by replacing the dummy with OP_TRUE"""
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assert_equal(tx.vin[0].scriptSig[0], OP_0)
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tx.vin[0].scriptSig = bytes([OP_TRUE]) + tx.vin[0].scriptSig[1:]
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tx.rehash()
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class NULLDUMMYTest(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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# This script tests NULLDUMMY activation, which is part of the 'segwit' deployment, so we go through
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# normal segwit activation here (and don't use the default always-on behaviour).
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self.extra_args = [[
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f'-testactivationheight=segwit@{COINBASE_MATURITY + 5}',
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'-addresstype=legacy',
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'-par=1', # Use only one script thread to get the exact reject reason for testing
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]]
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def create_transaction(self, *, txid, input_details=None, addr, amount, privkey):
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input = {"txid": txid, "vout": 0}
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output = {addr: amount}
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rawtx = self.nodes[0].createrawtransaction([input], output)
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# Details only needed for scripthash or witness spends
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input = None if not input_details else [{**input, **input_details}]
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signedtx = self.nodes[0].signrawtransactionwithkey(rawtx, [privkey], input)
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return tx_from_hex(signedtx["hex"])
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def run_test(self):
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self.privkey, self.pubkey = generate_keypair(wif=True)
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cms = self.nodes[0].createmultisig(1, [self.pubkey.hex()])
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wms = self.nodes[0].createmultisig(1, [self.pubkey.hex()], 'p2sh-segwit')
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self.ms_address = cms["address"]
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ms_unlock_details = {"scriptPubKey": address_to_scriptpubkey(self.ms_address).hex(),
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"redeemScript": cms["redeemScript"]}
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self.wit_ms_address = wms['address']
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self.coinbase_blocks = self.generate(self.nodes[0], 2) # block height = 2
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coinbase_txid = []
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for i in self.coinbase_blocks:
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coinbase_txid.append(self.nodes[0].getblock(i)['tx'][0])
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self.generate(self.nodes[0], COINBASE_MATURITY) # block height = COINBASE_MATURITY + 2
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self.lastblockhash = self.nodes[0].getbestblockhash()
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self.lastblockheight = COINBASE_MATURITY + 2
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self.lastblocktime = int(time.time()) + self.lastblockheight
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self.log.info(f"Test 1: NULLDUMMY compliant base transactions should be accepted to mempool and mined before activation [{COINBASE_MATURITY + 3}]")
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test1txs = [self.create_transaction(txid=coinbase_txid[0], addr=self.ms_address, amount=49,
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privkey=self.nodes[0].get_deterministic_priv_key().key)]
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txid1 = self.nodes[0].sendrawtransaction(test1txs[0].serialize_with_witness().hex(), 0)
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test1txs.append(self.create_transaction(txid=txid1, input_details=ms_unlock_details,
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addr=self.ms_address, amount=48,
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privkey=self.privkey))
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txid2 = self.nodes[0].sendrawtransaction(test1txs[1].serialize_with_witness().hex(), 0)
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test1txs.append(self.create_transaction(txid=coinbase_txid[1],
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addr=self.wit_ms_address, amount=49,
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privkey=self.nodes[0].get_deterministic_priv_key().key))
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txid3 = self.nodes[0].sendrawtransaction(test1txs[2].serialize_with_witness().hex(), 0)
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self.block_submit(self.nodes[0], test1txs, accept=True)
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self.log.info("Test 2: Non-NULLDUMMY base multisig transaction should not be accepted to mempool before activation")
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test2tx = self.create_transaction(txid=txid2, input_details=ms_unlock_details,
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addr=self.ms_address, amount=47,
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privkey=self.privkey)
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invalidate_nulldummy_tx(test2tx)
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assert_raises_rpc_error(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, test2tx.serialize_with_witness().hex(), 0)
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self.log.info(f"Test 3: Non-NULLDUMMY base transactions should be accepted in a block before activation [{COINBASE_MATURITY + 4}]")
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self.block_submit(self.nodes[0], [test2tx], accept=True)
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self.log.info("Test 4: Non-NULLDUMMY base multisig transaction is invalid after activation")
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test4tx = self.create_transaction(txid=test2tx.hash, input_details=ms_unlock_details,
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addr=getnewdestination()[2], amount=46,
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privkey=self.privkey)
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test6txs = [CTransaction(test4tx)]
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invalidate_nulldummy_tx(test4tx)
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assert_raises_rpc_error(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, test4tx.serialize_with_witness().hex(), 0)
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self.block_submit(self.nodes[0], [test4tx], accept=False)
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self.log.info("Test 5: Non-NULLDUMMY P2WSH multisig transaction invalid after activation")
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test5tx = self.create_transaction(txid=txid3, input_details={"scriptPubKey": test1txs[2].vout[0].scriptPubKey.hex(),
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"amount": 49, "witnessScript": wms["redeemScript"]},
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addr=getnewdestination(address_type='p2sh-segwit')[2], amount=48,
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privkey=self.privkey)
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test6txs.append(CTransaction(test5tx))
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test5tx.wit.vtxinwit[0].scriptWitness.stack[0] = b'\x01'
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assert_raises_rpc_error(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, test5tx.serialize_with_witness().hex(), 0)
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self.block_submit(self.nodes[0], [test5tx], with_witness=True, accept=False)
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self.log.info(f"Test 6: NULLDUMMY compliant base/witness transactions should be accepted to mempool and in block after activation [{COINBASE_MATURITY + 5}]")
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for i in test6txs:
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self.nodes[0].sendrawtransaction(i.serialize_with_witness().hex(), 0)
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self.block_submit(self.nodes[0], test6txs, with_witness=True, accept=True)
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def block_submit(self, node, txs, *, with_witness=False, accept):
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tmpl = node.getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)
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assert_equal(tmpl['previousblockhash'], self.lastblockhash)
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assert_equal(tmpl['height'], self.lastblockheight + 1)
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block = create_block(tmpl=tmpl, ntime=self.lastblocktime + 1, txlist=txs)
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if with_witness:
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add_witness_commitment(block)
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block.solve()
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assert_equal(None if accept else NULLDUMMY_ERROR, node.submitblock(block.serialize().hex()))
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if accept:
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assert_equal(node.getbestblockhash(), block.hash)
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self.lastblockhash = block.hash
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self.lastblocktime += 1
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self.lastblockheight += 1
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else:
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assert_equal(node.getbestblockhash(), self.lastblockhash)
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if __name__ == '__main__':
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NULLDUMMYTest(__file__).main()
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