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wallet_keypool.py
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#!/usr/bin/env python3
# Copyright (c) 2014-2022 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 the wallet keypool and interaction with wallet encryption/locking."""
import time
from decimal import Decimal
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import assert_equal, assert_raises_rpc_error
from test_framework.wallet_util import WalletUnlock
class KeyPoolTest(BitcoinTestFramework):
def add_options(self, parser):
self.add_wallet_options(parser)
def set_test_params(self):
self.num_nodes = 1
def skip_test_if_missing_module(self):
self.skip_if_no_wallet()
def run_test(self):
nodes = self.nodes
addr_before_encrypting = nodes[0].getnewaddress()
addr_before_encrypting_data = nodes[0].getaddressinfo(addr_before_encrypting)
wallet_info_old = nodes[0].getwalletinfo()
if not self.options.descriptors:
assert addr_before_encrypting_data['hdseedid'] == wallet_info_old['hdseedid']
# Encrypt wallet and wait to terminate
nodes[0].encryptwallet('test')
if self.options.descriptors:
# Import hardened derivation only descriptors
nodes[0].walletpassphrase('test', 10)
nodes[0].importdescriptors([
{
"desc": "wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/0h/*h)#y4dfsj7n",
"timestamp": "now",
"range": [0,0],
"active": True
},
{
"desc": "pkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1h/*h)#a0nyvl0k",
"timestamp": "now",
"range": [0,0],
"active": True
},
{
"desc": "sh(wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/2h/*h))#lmeu2axg",
"timestamp": "now",
"range": [0,0],
"active": True
},
{
"desc": "wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/3h/*h)#jkl636gm",
"timestamp": "now",
"range": [0,0],
"active": True,
"internal": True
},
{
"desc": "pkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/4h/*h)#l3crwaus",
"timestamp": "now",
"range": [0,0],
"active": True,
"internal": True
},
{
"desc": "sh(wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/5h/*h))#qg8wa75f",
"timestamp": "now",
"range": [0,0],
"active": True,
"internal": True
}
])
nodes[0].walletlock()
# Keep creating keys
addr = nodes[0].getnewaddress()
addr_data = nodes[0].getaddressinfo(addr)
wallet_info = nodes[0].getwalletinfo()
assert addr_before_encrypting_data['hdmasterfingerprint'] != addr_data['hdmasterfingerprint']
if not self.options.descriptors:
assert addr_data['hdseedid'] == wallet_info['hdseedid']
assert_raises_rpc_error(-12, "Error: Keypool ran out, please call keypoolrefill first", nodes[0].getnewaddress)
# put six (plus 2) new keys in the keypool (100% external-, +100% internal-keys, 1 in min)
with WalletUnlock(nodes[0], 'test'):
nodes[0].keypoolrefill(6)
wi = nodes[0].getwalletinfo()
if self.options.descriptors:
assert_equal(wi['keypoolsize_hd_internal'], 24)
assert_equal(wi['keypoolsize'], 24)
else:
assert_equal(wi['keypoolsize_hd_internal'], 6)
assert_equal(wi['keypoolsize'], 6)
# drain the internal keys
nodes[0].getrawchangeaddress()
nodes[0].getrawchangeaddress()
nodes[0].getrawchangeaddress()
nodes[0].getrawchangeaddress()
nodes[0].getrawchangeaddress()
nodes[0].getrawchangeaddress()
# remember keypool sizes
wi = nodes[0].getwalletinfo()
kp_size_before = [wi['keypoolsize_hd_internal'], wi['keypoolsize']]
# the next one should fail
assert_raises_rpc_error(-12, "Keypool ran out", nodes[0].getrawchangeaddress)
# check that keypool sizes did not change
wi = nodes[0].getwalletinfo()
kp_size_after = [wi['keypoolsize_hd_internal'], wi['keypoolsize']]
assert_equal(kp_size_before, kp_size_after)
# drain the external keys
addr = set()
addr.add(nodes[0].getnewaddress(address_type="bech32"))
addr.add(nodes[0].getnewaddress(address_type="bech32"))
addr.add(nodes[0].getnewaddress(address_type="bech32"))
addr.add(nodes[0].getnewaddress(address_type="bech32"))
addr.add(nodes[0].getnewaddress(address_type="bech32"))
addr.add(nodes[0].getnewaddress(address_type="bech32"))
assert len(addr) == 6
# remember keypool sizes
wi = nodes[0].getwalletinfo()
kp_size_before = [wi['keypoolsize_hd_internal'], wi['keypoolsize']]
# the next one should fail
assert_raises_rpc_error(-12, "Error: Keypool ran out, please call keypoolrefill first", nodes[0].getnewaddress)
# check that keypool sizes did not change
wi = nodes[0].getwalletinfo()
kp_size_after = [wi['keypoolsize_hd_internal'], wi['keypoolsize']]
assert_equal(kp_size_before, kp_size_after)
# refill keypool with three new addresses
nodes[0].walletpassphrase('test', 1)
nodes[0].keypoolrefill(3)
# test walletpassphrase timeout
time.sleep(1.1)
assert_equal(nodes[0].getwalletinfo()["unlocked_until"], 0)
# drain the keypool
for _ in range(3):
nodes[0].getnewaddress()
assert_raises_rpc_error(-12, "Keypool ran out", nodes[0].getnewaddress)
with WalletUnlock(nodes[0], 'test'):
nodes[0].keypoolrefill(100)
wi = nodes[0].getwalletinfo()
if self.options.descriptors:
assert_equal(wi['keypoolsize_hd_internal'], 400)
assert_equal(wi['keypoolsize'], 400)
else:
assert_equal(wi['keypoolsize_hd_internal'], 100)
assert_equal(wi['keypoolsize'], 100)
if not self.options.descriptors:
# Check that newkeypool entirely flushes the keypool
start_keypath = nodes[0].getaddressinfo(nodes[0].getnewaddress())['hdkeypath']
start_change_keypath = nodes[0].getaddressinfo(nodes[0].getrawchangeaddress())['hdkeypath']
# flush keypool and get new addresses
nodes[0].newkeypool()
end_keypath = nodes[0].getaddressinfo(nodes[0].getnewaddress())['hdkeypath']
end_change_keypath = nodes[0].getaddressinfo(nodes[0].getrawchangeaddress())['hdkeypath']
# The new keypath index should be 100 more than the old one
new_index = int(start_keypath.rsplit('/', 1)[1][:-1]) + 100
new_change_index = int(start_change_keypath.rsplit('/', 1)[1][:-1]) + 100
assert_equal(end_keypath, "m/0'/0'/" + str(new_index) + "'")
assert_equal(end_change_keypath, "m/0'/1'/" + str(new_change_index) + "'")
# create a blank wallet
nodes[0].createwallet(wallet_name='w2', blank=True, disable_private_keys=True)
w2 = nodes[0].get_wallet_rpc('w2')
# refer to initial wallet as w1
w1 = nodes[0].get_wallet_rpc(self.default_wallet_name)
# import private key and fund it
address = addr.pop()
desc = w1.getaddressinfo(address)['desc']
if self.options.descriptors:
res = w2.importdescriptors([{'desc': desc, 'timestamp': 'now'}])
else:
res = w2.importmulti([{'desc': desc, 'timestamp': 'now'}])
assert_equal(res[0]['success'], True)
with WalletUnlock(w1, 'test'):
res = w1.sendtoaddress(address=address, amount=0.00010000)
self.generate(nodes[0], 1)
destination = addr.pop()
# Using a fee rate (10 sat / byte) well above the minimum relay rate
# creating a 5,000 sat transaction with change should not be possible
assert_raises_rpc_error(-4, "Transaction needs a change address, but we can't generate it.", w2.walletcreatefundedpsbt, inputs=[], outputs=[{addr.pop(): 0.00005000}], subtractFeeFromOutputs=[0], feeRate=0.00010)
# creating a 10,000 sat transaction without change, with a manual input, should still be possible
res = w2.walletcreatefundedpsbt(inputs=w2.listunspent(), outputs=[{destination: 0.00010000}], subtractFeeFromOutputs=[0], feeRate=0.00010)
assert_equal("psbt" in res, True)
# creating a 10,000 sat transaction without change should still be possible
res = w2.walletcreatefundedpsbt(inputs=[], outputs=[{destination: 0.00010000}], subtractFeeFromOutputs=[0], feeRate=0.00010)
assert_equal("psbt" in res, True)
# should work without subtractFeeFromOutputs if the exact fee is subtracted from the amount
res = w2.walletcreatefundedpsbt(inputs=[], outputs=[{destination: 0.00008900}], feeRate=0.00010)
assert_equal("psbt" in res, True)
# dust change should be removed
res = w2.walletcreatefundedpsbt(inputs=[], outputs=[{destination: 0.00008800}], feeRate=0.00010)
assert_equal("psbt" in res, True)
# create a transaction without change at the maximum fee rate, such that the output is still spendable:
res = w2.walletcreatefundedpsbt(inputs=[], outputs=[{destination: 0.00010000}], subtractFeeFromOutputs=[0], feeRate=0.0008823)
assert_equal("psbt" in res, True)
assert_equal(res["fee"], Decimal("0.00009706"))
# creating a 10,000 sat transaction with a manual change address should be possible
res = w2.walletcreatefundedpsbt(inputs=[], outputs=[{destination: 0.00010000}], subtractFeeFromOutputs=[0], feeRate=0.00010, changeAddress=addr.pop())
assert_equal("psbt" in res, True)
if not self.options.descriptors:
msg = "Error: Private keys are disabled for this wallet"
assert_raises_rpc_error(-4, msg, w2.keypoolrefill, 100)
if __name__ == '__main__':
KeyPoolTest(__file__).main()