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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
#!/usr/bin/env python3
# Copyright (c) 2016 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 the SegWit changeover logic
#
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
from test_framework.mininode import sha256, ripemd160
import os
import shutil
NODE_0 = 0
NODE_1 = 1
NODE_2 = 2
WIT_V0 = 0
WIT_V1 = 1
def witness_script(version, pubkey):
if (version == 0):
pubkeyhash = bytes_to_hex_str(ripemd160(sha256(hex_str_to_bytes(pubkey))))
pkscript = "0014" + pubkeyhash
elif (version == 1):
# 1-of-1 multisig
scripthash = bytes_to_hex_str(sha256(hex_str_to_bytes("5121" + pubkey + "51ae")))
pkscript = "0020" + scripthash
else:
assert("Wrong version" == "0 or 1")
return pkscript
def addlength(script):
scriptlen = format(len(script)//2, 'x')
assert(len(scriptlen) == 2)
return scriptlen + script
def create_witnessprogram(version, node, utxo, pubkey, encode_p2sh, amount):
pkscript = witness_script(version, pubkey);
if (encode_p2sh):
p2sh_hash = bytes_to_hex_str(ripemd160(sha256(hex_str_to_bytes(pkscript))))
pkscript = "a914"+p2sh_hash+"87"
inputs = []
outputs = {}
inputs.append({ "txid" : utxo["txid"], "vout" : utxo["vout"]} )
DUMMY_P2SH = "2MySexEGVzZpRgNQ1JdjdP5bRETznm3roQ2" # P2SH of "OP_1 OP_DROP"
outputs[DUMMY_P2SH] = amount
tx_to_witness = node.createrawtransaction(inputs,outputs)
#replace dummy output with our own
tx_to_witness = tx_to_witness[0:110] + addlength(pkscript) + tx_to_witness[-8:]
return tx_to_witness
def send_to_witness(version, node, utxo, pubkey, encode_p2sh, amount, sign=True, insert_redeem_script=""):
tx_to_witness = create_witnessprogram(version, node, utxo, pubkey, encode_p2sh, amount)
if (sign):
signed = node.signrawtransaction(tx_to_witness)
assert("errors" not in signed or len(["errors"]) == 0)
return node.sendrawtransaction(signed["hex"])
else:
if (insert_redeem_script):
tx_to_witness = tx_to_witness[0:82] + addlength(insert_redeem_script) + tx_to_witness[84:]
return node.sendrawtransaction(tx_to_witness)
def getutxo(txid):
utxo = {}
utxo["vout"] = 0
utxo["txid"] = txid
return utxo
class SegWitTest(BitcoinTestFramework):
def setup_chain(self):
print("Initializing test directory "+self.options.tmpdir)
initialize_chain_clean(self.options.tmpdir, 3)
def setup_network(self):
self.nodes = []
self.nodes.append(start_node(0, self.options.tmpdir, ["-logtimemicros", "-debug", "-walletprematurewitness"]))
self.nodes.append(start_node(1, self.options.tmpdir, ["-logtimemicros", "-debug", "-blockversion=4", "-promiscuousmempoolflags=517", "-prematurewitness", "-walletprematurewitness"]))
self.nodes.append(start_node(2, self.options.tmpdir, ["-logtimemicros", "-debug", "-blockversion=536870915", "-promiscuousmempoolflags=517", "-prematurewitness", "-walletprematurewitness"]))
connect_nodes(self.nodes[1], 0)
connect_nodes(self.nodes[2], 1)
connect_nodes(self.nodes[0], 2)
self.is_network_split = False
self.sync_all()
def success_mine(self, node, txid, sign, redeem_script=""):
send_to_witness(1, node, getutxo(txid), self.pubkey[0], False, Decimal("49.998"), sign, redeem_script)
block = node.generate(1)
assert_equal(len(node.getblock(block[0])["tx"]), 2)
sync_blocks(self.nodes)
def skip_mine(self, node, txid, sign, redeem_script=""):
send_to_witness(1, node, getutxo(txid), self.pubkey[0], False, Decimal("49.998"), sign, redeem_script)
block = node.generate(1)
assert_equal(len(node.getblock(block[0])["tx"]), 1)
sync_blocks(self.nodes)
def fail_accept(self, node, txid, sign, redeem_script=""):
try:
send_to_witness(1, node, getutxo(txid), self.pubkey[0], False, Decimal("49.998"), sign, redeem_script)
except JSONRPCException as exp:
assert(exp.error["code"] == -26)
else:
raise AssertionError("Tx should not have been accepted")
def fail_mine(self, node, txid, sign, redeem_script=""):
send_to_witness(1, node, getutxo(txid), self.pubkey[0], False, Decimal("49.998"), sign, redeem_script)
try:
node.generate(1)
except JSONRPCException as exp:
assert(exp.error["code"] == -1)
else:
raise AssertionError("Created valid block when TestBlockValidity should have failed")
sync_blocks(self.nodes)
def run_test(self):
self.nodes[0].generate(160) #block 160
self.pubkey = []
p2sh_ids = [] # p2sh_ids[NODE][VER] is an array of txids that spend to a witness version VER pkscript to an address for NODE embedded in p2sh
wit_ids = [] # wit_ids[NODE][VER] is an array of txids that spend to a witness version VER pkscript to an address for NODE via bare witness
for i in range(3):
newaddress = self.nodes[i].getnewaddress()
self.pubkey.append(self.nodes[i].validateaddress(newaddress)["pubkey"])
multiaddress = self.nodes[i].addmultisigaddress(1, [self.pubkey[-1]])
self.nodes[i].addwitnessaddress(newaddress)
self.nodes[i].addwitnessaddress(multiaddress)
p2sh_ids.append([])
wit_ids.append([])
for v in range(2):
p2sh_ids[i].append([])
wit_ids[i].append([])
for i in range(5):
for n in range(3):
for v in range(2):
wit_ids[n][v].append(send_to_witness(v, self.nodes[0], self.nodes[0].listunspent()[0], self.pubkey[n], False, Decimal("49.999")))
p2sh_ids[n][v].append(send_to_witness(v, self.nodes[0], self.nodes[0].listunspent()[0], self.pubkey[n], True, Decimal("49.999")))
self.nodes[0].generate(1) #block 161
sync_blocks(self.nodes)
# Make sure all nodes recognize the transactions as theirs
assert_equal(self.nodes[0].getbalance(), 60*50 - 60*50 + 20*Decimal("49.999") + 50)
assert_equal(self.nodes[1].getbalance(), 20*Decimal("49.999"))
assert_equal(self.nodes[2].getbalance(), 20*Decimal("49.999"))
self.nodes[0].generate(262) #block 423
sync_blocks(self.nodes)
print("Verify default node can't accept any witness format txs before fork")
# unsigned, no scriptsig
self.fail_accept(self.nodes[0], wit_ids[NODE_0][WIT_V0][0], False)
self.fail_accept(self.nodes[0], wit_ids[NODE_0][WIT_V1][0], False)
self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V0][0], False)
self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V1][0], False)
# unsigned with redeem script
self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V0][0], False, addlength(witness_script(0, self.pubkey[0])))
self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V1][0], False, addlength(witness_script(1, self.pubkey[0])))
# signed
self.fail_accept(self.nodes[0], wit_ids[NODE_0][WIT_V0][0], True)
self.fail_accept(self.nodes[0], wit_ids[NODE_0][WIT_V1][0], True)
self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V0][0], True)
self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V1][0], True)
print("Verify witness txs are skipped for mining before the fork")
self.skip_mine(self.nodes[2], wit_ids[NODE_2][WIT_V0][0], True) #block 424
self.skip_mine(self.nodes[2], wit_ids[NODE_2][WIT_V1][0], True) #block 425
self.skip_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V0][0], True) #block 426
self.skip_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V1][0], True) #block 427
# TODO: An old node would see these txs without witnesses and be able to mine them
print("Verify unsigned bare witness txs in versionbits-setting blocks are valid before the fork")
self.success_mine(self.nodes[2], wit_ids[NODE_2][WIT_V0][1], False) #block 428
self.success_mine(self.nodes[2], wit_ids[NODE_2][WIT_V1][1], False) #block 429
print("Verify unsigned p2sh witness txs without a redeem script are invalid")
self.fail_accept(self.nodes[2], p2sh_ids[NODE_2][WIT_V0][1], False)
self.fail_accept(self.nodes[2], p2sh_ids[NODE_2][WIT_V1][1], False)
print("Verify unsigned p2sh witness txs with a redeem script in versionbits-settings blocks are valid before the fork")
self.success_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V0][1], False, addlength(witness_script(0, self.pubkey[2]))) #block 430
self.success_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V1][1], False, addlength(witness_script(1, self.pubkey[2]))) #block 431
print("Verify previous witness txs skipped for mining can now be mined")
assert_equal(len(self.nodes[2].getrawmempool()), 4)
block = self.nodes[2].generate(1) #block 432 (first block with new rules; 432 = 144 * 3)
sync_blocks(self.nodes)
assert_equal(len(self.nodes[2].getrawmempool()), 0)
assert_equal(len(self.nodes[2].getblock(block[0])["tx"]), 5)
print("Verify witness txs without witness data are invalid after the fork")
self.fail_mine(self.nodes[2], wit_ids[NODE_2][WIT_V0][2], False)
self.fail_mine(self.nodes[2], wit_ids[NODE_2][WIT_V1][2], False)
self.fail_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V0][2], False, addlength(witness_script(0, self.pubkey[2])))
self.fail_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V1][2], False, addlength(witness_script(1, self.pubkey[2])))
print("Verify default node can now use witness txs")
self.success_mine(self.nodes[0], wit_ids[NODE_0][WIT_V0][0], True) #block 432
self.success_mine(self.nodes[0], wit_ids[NODE_0][WIT_V1][0], True) #block 433
self.success_mine(self.nodes[0], p2sh_ids[NODE_0][WIT_V0][0], True) #block 434
self.success_mine(self.nodes[0], p2sh_ids[NODE_0][WIT_V1][0], True) #block 435
if __name__ == '__main__':
SegWitTest().main()
|
