1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
#!/usr/bin/env python3
# Copyright (c) 2016-2022 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 NULLDUMMY softfork.
Connect to a single node.
Generate 2 blocks (save the coinbases for later).
Generate COINBASE_MATURITY (CB) more blocks to ensure the coinbases are mature.
[Policy/Consensus] Check that NULLDUMMY compliant transactions are accepted in block CB + 3.
[Policy] Check that non-NULLDUMMY transactions are rejected before activation.
[Consensus] Check that the new NULLDUMMY rules are not enforced on block CB + 4.
[Policy/Consensus] Check that the new NULLDUMMY rules are enforced on block CB + 5.
"""
import time
from test_framework.blocktools import (
COINBASE_MATURITY,
NORMAL_GBT_REQUEST_PARAMS,
add_witness_commitment,
create_block,
)
from test_framework.messages import (
CTransaction,
tx_from_hex,
)
from test_framework.script import (
OP_0,
OP_TRUE,
)
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
assert_raises_rpc_error,
)
from test_framework.wallet import getnewdestination
from test_framework.key import ECKey
from test_framework.wallet_util import bytes_to_wif
NULLDUMMY_ERROR = "non-mandatory-script-verify-flag (Dummy CHECKMULTISIG argument must be zero)"
def invalidate_nulldummy_tx(tx):
"""Transform a NULLDUMMY compliant tx (i.e. scriptSig starts with OP_0)
to be non-NULLDUMMY compliant by replacing the dummy with OP_TRUE"""
assert_equal(tx.vin[0].scriptSig[0], OP_0)
tx.vin[0].scriptSig = bytes([OP_TRUE]) + tx.vin[0].scriptSig[1:]
tx.rehash()
class NULLDUMMYTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
self.setup_clean_chain = True
# This script tests NULLDUMMY activation, which is part of the 'segwit' deployment, so we go through
# normal segwit activation here (and don't use the default always-on behaviour).
self.extra_args = [[
f'-testactivationheight=segwit@{COINBASE_MATURITY + 5}',
'-addresstype=legacy',
'-par=1', # Use only one script thread to get the exact reject reason for testing
]]
def create_transaction(self, *, txid, input_details=None, addr, amount, privkey):
input = {"txid": txid, "vout": 0}
output = {addr: amount}
rawtx = self.nodes[0].createrawtransaction([input], output)
# Details only needed for scripthash or witness spends
input = None if not input_details else [{**input, **input_details}]
signedtx = self.nodes[0].signrawtransactionwithkey(rawtx, [privkey], input)
return tx_from_hex(signedtx["hex"])
def run_test(self):
eckey = ECKey()
eckey.generate()
self.privkey = bytes_to_wif(eckey.get_bytes())
self.pubkey = eckey.get_pubkey().get_bytes().hex()
cms = self.nodes[0].createmultisig(1, [self.pubkey])
wms = self.nodes[0].createmultisig(1, [self.pubkey], 'p2sh-segwit')
self.ms_address = cms["address"]
ms_unlock_details = {"scriptPubKey": self.nodes[0].validateaddress(self.ms_address)["scriptPubKey"],
"redeemScript": cms["redeemScript"]}
self.wit_ms_address = wms['address']
self.coinbase_blocks = self.generate(self.nodes[0], 2) # block height = 2
coinbase_txid = []
for i in self.coinbase_blocks:
coinbase_txid.append(self.nodes[0].getblock(i)['tx'][0])
self.generate(self.nodes[0], COINBASE_MATURITY) # block height = COINBASE_MATURITY + 2
self.lastblockhash = self.nodes[0].getbestblockhash()
self.lastblockheight = COINBASE_MATURITY + 2
self.lastblocktime = int(time.time()) + self.lastblockheight
self.log.info(f"Test 1: NULLDUMMY compliant base transactions should be accepted to mempool and mined before activation [{COINBASE_MATURITY + 3}]")
test1txs = [self.create_transaction(txid=coinbase_txid[0], addr=self.ms_address, amount=49,
privkey=self.nodes[0].get_deterministic_priv_key().key)]
txid1 = self.nodes[0].sendrawtransaction(test1txs[0].serialize_with_witness().hex(), 0)
test1txs.append(self.create_transaction(txid=txid1, input_details=ms_unlock_details,
addr=self.ms_address, amount=48,
privkey=self.privkey))
txid2 = self.nodes[0].sendrawtransaction(test1txs[1].serialize_with_witness().hex(), 0)
test1txs.append(self.create_transaction(txid=coinbase_txid[1],
addr=self.wit_ms_address, amount=49,
privkey=self.nodes[0].get_deterministic_priv_key().key))
txid3 = self.nodes[0].sendrawtransaction(test1txs[2].serialize_with_witness().hex(), 0)
self.block_submit(self.nodes[0], test1txs, accept=True)
self.log.info("Test 2: Non-NULLDUMMY base multisig transaction should not be accepted to mempool before activation")
test2tx = self.create_transaction(txid=txid2, input_details=ms_unlock_details,
addr=self.ms_address, amount=47,
privkey=self.privkey)
invalidate_nulldummy_tx(test2tx)
assert_raises_rpc_error(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, test2tx.serialize_with_witness().hex(), 0)
self.log.info(f"Test 3: Non-NULLDUMMY base transactions should be accepted in a block before activation [{COINBASE_MATURITY + 4}]")
self.block_submit(self.nodes[0], [test2tx], accept=True)
self.log.info("Test 4: Non-NULLDUMMY base multisig transaction is invalid after activation")
test4tx = self.create_transaction(txid=test2tx.hash, input_details=ms_unlock_details,
addr=getnewdestination()[2], amount=46,
privkey=self.privkey)
test6txs = [CTransaction(test4tx)]
invalidate_nulldummy_tx(test4tx)
assert_raises_rpc_error(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, test4tx.serialize_with_witness().hex(), 0)
self.block_submit(self.nodes[0], [test4tx], accept=False)
self.log.info("Test 5: Non-NULLDUMMY P2WSH multisig transaction invalid after activation")
test5tx = self.create_transaction(txid=txid3, input_details={"scriptPubKey": test1txs[2].vout[0].scriptPubKey.hex(),
"amount": 49, "witnessScript": wms["redeemScript"]},
addr=getnewdestination(address_type='p2sh-segwit')[2], amount=48,
privkey=self.privkey)
test6txs.append(CTransaction(test5tx))
test5tx.wit.vtxinwit[0].scriptWitness.stack[0] = b'\x01'
assert_raises_rpc_error(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, test5tx.serialize_with_witness().hex(), 0)
self.block_submit(self.nodes[0], [test5tx], with_witness=True, accept=False)
self.log.info(f"Test 6: NULLDUMMY compliant base/witness transactions should be accepted to mempool and in block after activation [{COINBASE_MATURITY + 5}]")
for i in test6txs:
self.nodes[0].sendrawtransaction(i.serialize_with_witness().hex(), 0)
self.block_submit(self.nodes[0], test6txs, with_witness=True, accept=True)
def block_submit(self, node, txs, *, with_witness=False, accept):
tmpl = node.getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)
assert_equal(tmpl['previousblockhash'], self.lastblockhash)
assert_equal(tmpl['height'], self.lastblockheight + 1)
block = create_block(tmpl=tmpl, ntime=self.lastblocktime + 1, txlist=txs)
if with_witness:
add_witness_commitment(block)
block.solve()
assert_equal(None if accept else NULLDUMMY_ERROR, node.submitblock(block.serialize().hex()))
if accept:
assert_equal(node.getbestblockhash(), block.hash)
self.lastblockhash = block.hash
self.lastblocktime += 1
self.lastblockheight += 1
else:
assert_equal(node.getbestblockhash(), self.lastblockhash)
if __name__ == '__main__':
NULLDUMMYTest().main()
|
