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dogecoin/test/functional/wallet_avoidreuse.py
Andrew Chow 223588b1bb Add a --descriptors option to various tests 
Adds a --descriptors option globally to the test framework. This will
make the test create and use descriptor wallets. However some tests may
not work with this.

Some tests are modified to work with --descriptors and run with that
option in test_runer:
* wallet_basic.py
* wallet_encryption.py
* wallet_keypool.py
* wallet_keypool_topup.py
* wallet_labels.py
* wallet_avoidreuse.py
2020-04-23 13:59:48 -04:00

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#!/usr/bin/env python3
# Copyright (c) 2018-2020 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 avoid_reuse and setwalletflag features."""
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_approx,
assert_equal,
assert_raises_rpc_error,
connect_nodes,
)
def reset_balance(node, discardaddr):
'''Throw away all owned coins by the node so it gets a balance of 0.'''
balance = node.getbalance(avoid_reuse=False)
if balance > 0.5:
node.sendtoaddress(address=discardaddr, amount=balance, subtractfeefromamount=True, avoid_reuse=False)
def count_unspent(node):
'''Count the unspent outputs for the given node and return various statistics'''
r = {
"total": {
"count": 0,
"sum": 0,
},
"reused": {
"count": 0,
"sum": 0,
},
}
supports_reused = True
for utxo in node.listunspent(minconf=0):
r["total"]["count"] += 1
r["total"]["sum"] += utxo["amount"]
if supports_reused and "reused" in utxo:
if utxo["reused"]:
r["reused"]["count"] += 1
r["reused"]["sum"] += utxo["amount"]
else:
supports_reused = False
r["reused"]["supported"] = supports_reused
return r
def assert_unspent(node, total_count=None, total_sum=None, reused_supported=None, reused_count=None, reused_sum=None):
'''Make assertions about a node's unspent output statistics'''
stats = count_unspent(node)
if total_count is not None:
assert_equal(stats["total"]["count"], total_count)
if total_sum is not None:
assert_approx(stats["total"]["sum"], total_sum, 0.001)
if reused_supported is not None:
assert_equal(stats["reused"]["supported"], reused_supported)
if reused_count is not None:
assert_equal(stats["reused"]["count"], reused_count)
if reused_sum is not None:
assert_approx(stats["reused"]["sum"], reused_sum, 0.001)
def assert_balances(node, mine):
'''Make assertions about a node's getbalances output'''
got = node.getbalances()["mine"]
for k,v in mine.items():
assert_approx(got[k], v, 0.001)
class AvoidReuseTest(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = False
self.num_nodes = 2
# This test isn't testing txn relay/timing, so set whitelist on the
# peers for instant txn relay. This speeds up the test run time 2-3x.
self.extra_args = [["-whitelist=noban@127.0.0.1"]] * self.num_nodes
def skip_test_if_missing_module(self):
self.skip_if_no_wallet()
def run_test(self):
'''Set up initial chain and run tests defined below'''
self.test_persistence()
self.test_immutable()
self.nodes[0].generate(110)
self.sync_all()
self.test_change_remains_change(self.nodes[1])
reset_balance(self.nodes[1], self.nodes[0].getnewaddress())
self.test_sending_from_reused_address_without_avoid_reuse()
reset_balance(self.nodes[1], self.nodes[0].getnewaddress())
self.test_sending_from_reused_address_fails("legacy")
reset_balance(self.nodes[1], self.nodes[0].getnewaddress())
self.test_sending_from_reused_address_fails("p2sh-segwit")
reset_balance(self.nodes[1], self.nodes[0].getnewaddress())
self.test_sending_from_reused_address_fails("bech32")
reset_balance(self.nodes[1], self.nodes[0].getnewaddress())
self.test_getbalances_used()
reset_balance(self.nodes[1], self.nodes[0].getnewaddress())
self.test_full_destination_group_is_preferred()
reset_balance(self.nodes[1], self.nodes[0].getnewaddress())
self.test_all_destination_groups_are_used()
def test_persistence(self):
'''Test that wallet files persist the avoid_reuse flag.'''
self.log.info("Test wallet files persist avoid_reuse flag")
# Configure node 1 to use avoid_reuse
self.nodes[1].setwalletflag('avoid_reuse')
# Flags should be node1.avoid_reuse=false, node2.avoid_reuse=true
assert_equal(self.nodes[0].getwalletinfo()["avoid_reuse"], False)
assert_equal(self.nodes[1].getwalletinfo()["avoid_reuse"], True)
# Stop and restart node 1
self.stop_node(1)
self.start_node(1)
connect_nodes(self.nodes[0], 1)
# Flags should still be node1.avoid_reuse=false, node2.avoid_reuse=true
assert_equal(self.nodes[0].getwalletinfo()["avoid_reuse"], False)
assert_equal(self.nodes[1].getwalletinfo()["avoid_reuse"], True)
# Attempting to set flag to its current state should throw
assert_raises_rpc_error(-8, "Wallet flag is already set to false", self.nodes[0].setwalletflag, 'avoid_reuse', False)
assert_raises_rpc_error(-8, "Wallet flag is already set to true", self.nodes[1].setwalletflag, 'avoid_reuse', True)
def test_immutable(self):
'''Test immutable wallet flags'''
self.log.info("Test immutable wallet flags")
# Attempt to set the disable_private_keys flag; this should not work
assert_raises_rpc_error(-8, "Wallet flag is immutable", self.nodes[1].setwalletflag, 'disable_private_keys')
tempwallet = ".wallet_avoidreuse.py_test_immutable_wallet.dat"
# Create a wallet with disable_private_keys set; this should work
self.nodes[1].createwallet(wallet_name=tempwallet, disable_private_keys=True)
w = self.nodes[1].get_wallet_rpc(tempwallet)
# Attempt to unset the disable_private_keys flag; this should not work
assert_raises_rpc_error(-8, "Wallet flag is immutable", w.setwalletflag, 'disable_private_keys', False)
# Unload temp wallet
self.nodes[1].unloadwallet(tempwallet)
def test_change_remains_change(self, node):
self.log.info("Test that change doesn't turn into non-change when spent")
reset_balance(node, node.getnewaddress())
addr = node.getnewaddress()
txid = node.sendtoaddress(addr, 1)
out = node.listunspent(minconf=0, query_options={'minimumAmount': 2})
assert_equal(len(out), 1)
assert_equal(out[0]['txid'], txid)
changeaddr = out[0]['address']
# Make sure it's starting out as change as expected
assert node.getaddressinfo(changeaddr)['ischange']
for logical_tx in node.listtransactions():
assert logical_tx.get('address') != changeaddr
# Spend it
reset_balance(node, node.getnewaddress())
# It should still be change
assert node.getaddressinfo(changeaddr)['ischange']
for logical_tx in node.listtransactions():
assert logical_tx.get('address') != changeaddr
def test_sending_from_reused_address_without_avoid_reuse(self):
'''
Test the same as test_sending_from_reused_address_fails, except send the 10 BTC with
the avoid_reuse flag set to false. This means the 10 BTC send should succeed,
where it fails in test_sending_from_reused_address_fails.
'''
self.log.info("Test sending from reused address with avoid_reuse=false")
fundaddr = self.nodes[1].getnewaddress()
retaddr = self.nodes[0].getnewaddress()
self.nodes[0].sendtoaddress(fundaddr, 10)
self.nodes[0].generate(1)
self.sync_all()
# listunspent should show 1 single, unused 10 btc output
assert_unspent(self.nodes[1], total_count=1, total_sum=10, reused_supported=True, reused_count=0)
# getbalances should show no used, 10 btc trusted
assert_balances(self.nodes[1], mine={"used": 0, "trusted": 10})
# node 0 should not show a used entry, as it does not enable avoid_reuse
assert("used" not in self.nodes[0].getbalances()["mine"])
self.nodes[1].sendtoaddress(retaddr, 5)
self.nodes[0].generate(1)
self.sync_all()
# listunspent should show 1 single, unused 5 btc output
assert_unspent(self.nodes[1], total_count=1, total_sum=5, reused_supported=True, reused_count=0)
# getbalances should show no used, 5 btc trusted
assert_balances(self.nodes[1], mine={"used": 0, "trusted": 5})
self.nodes[0].sendtoaddress(fundaddr, 10)
self.nodes[0].generate(1)
self.sync_all()
# listunspent should show 2 total outputs (5, 10 btc), one unused (5), one reused (10)
assert_unspent(self.nodes[1], total_count=2, total_sum=15, reused_count=1, reused_sum=10)
# getbalances should show 10 used, 5 btc trusted
assert_balances(self.nodes[1], mine={"used": 10, "trusted": 5})
self.nodes[1].sendtoaddress(address=retaddr, amount=10, avoid_reuse=False)
# listunspent should show 1 total outputs (5 btc), unused
assert_unspent(self.nodes[1], total_count=1, total_sum=5, reused_count=0)
# getbalances should show no used, 5 btc trusted
assert_balances(self.nodes[1], mine={"used": 0, "trusted": 5})
# node 1 should now have about 5 btc left (for both cases)
assert_approx(self.nodes[1].getbalance(), 5, 0.001)
assert_approx(self.nodes[1].getbalance(avoid_reuse=False), 5, 0.001)
def test_sending_from_reused_address_fails(self, second_addr_type):
'''
Test the simple case where [1] generates a new address A, then
[0] sends 10 BTC to A.
[1] spends 5 BTC from A. (leaving roughly 5 BTC useable)
[0] sends 10 BTC to A again.
[1] tries to spend 10 BTC (fails; dirty).
[1] tries to spend 4 BTC (succeeds; change address sufficient)
'''
self.log.info("Test sending from reused {} address fails".format(second_addr_type))
fundaddr = self.nodes[1].getnewaddress(label="", address_type="legacy")
retaddr = self.nodes[0].getnewaddress()
self.nodes[0].sendtoaddress(fundaddr, 10)
self.nodes[0].generate(1)
self.sync_all()
# listunspent should show 1 single, unused 10 btc output
assert_unspent(self.nodes[1], total_count=1, total_sum=10, reused_supported=True, reused_count=0)
# getbalances should show no used, 10 btc trusted
assert_balances(self.nodes[1], mine={"used": 0, "trusted": 10})
self.nodes[1].sendtoaddress(retaddr, 5)
self.nodes[0].generate(1)
self.sync_all()
# listunspent should show 1 single, unused 5 btc output
assert_unspent(self.nodes[1], total_count=1, total_sum=5, reused_supported=True, reused_count=0)
# getbalances should show no used, 5 btc trusted
assert_balances(self.nodes[1], mine={"used": 0, "trusted": 5})
if not self.options.descriptors:
# For the second send, we transmute it to a related single-key address
# to make sure it's also detected as re-use
fund_spk = self.nodes[0].getaddressinfo(fundaddr)["scriptPubKey"]
fund_decoded = self.nodes[0].decodescript(fund_spk)
if second_addr_type == "p2sh-segwit":
new_fundaddr = fund_decoded["segwit"]["p2sh-segwit"]
elif second_addr_type == "bech32":
new_fundaddr = fund_decoded["segwit"]["addresses"][0]
else:
new_fundaddr = fundaddr
assert_equal(second_addr_type, "legacy")
self.nodes[0].sendtoaddress(new_fundaddr, 10)
self.nodes[0].generate(1)
self.sync_all()
# listunspent should show 2 total outputs (5, 10 btc), one unused (5), one reused (10)
assert_unspent(self.nodes[1], total_count=2, total_sum=15, reused_count=1, reused_sum=10)
# getbalances should show 10 used, 5 btc trusted
assert_balances(self.nodes[1], mine={"used": 10, "trusted": 5})
# node 1 should now have a balance of 5 (no dirty) or 15 (including dirty)
assert_approx(self.nodes[1].getbalance(), 5, 0.001)
assert_approx(self.nodes[1].getbalance(avoid_reuse=False), 15, 0.001)
assert_raises_rpc_error(-6, "Insufficient funds", self.nodes[1].sendtoaddress, retaddr, 10)
self.nodes[1].sendtoaddress(retaddr, 4)
# listunspent should show 2 total outputs (1, 10 btc), one unused (1), one reused (10)
assert_unspent(self.nodes[1], total_count=2, total_sum=11, reused_count=1, reused_sum=10)
# getbalances should show 10 used, 1 btc trusted
assert_balances(self.nodes[1], mine={"used": 10, "trusted": 1})
# node 1 should now have about 1 btc left (no dirty) and 11 (including dirty)
assert_approx(self.nodes[1].getbalance(), 1, 0.001)
assert_approx(self.nodes[1].getbalance(avoid_reuse=False), 11, 0.001)
def test_getbalances_used(self):
'''
getbalances and listunspent should pick up on reused addresses
immediately, even for address reusing outputs created before the first
transaction was spending from that address
'''
self.log.info("Test getbalances used category")
# node under test should be completely empty
assert_equal(self.nodes[1].getbalance(avoid_reuse=False), 0)
new_addr = self.nodes[1].getnewaddress()
ret_addr = self.nodes[0].getnewaddress()
# send multiple transactions, reusing one address
for _ in range(11):
self.nodes[0].sendtoaddress(new_addr, 1)
self.nodes[0].generate(1)
self.sync_all()
# send transaction that should not use all the available outputs
# per the current coin selection algorithm
self.nodes[1].sendtoaddress(ret_addr, 5)
# getbalances and listunspent should show the remaining outputs
# in the reused address as used/reused
assert_unspent(self.nodes[1], total_count=2, total_sum=6, reused_count=1, reused_sum=1)
assert_balances(self.nodes[1], mine={"used": 1, "trusted": 5})
def test_full_destination_group_is_preferred(self):
'''
Test the case where [1] only has 11 outputs of 1 BTC in the same reused
address and tries to send a small payment of 0.5 BTC. The wallet
should use 10 outputs from the reused address as inputs and not a
single 1 BTC input, in order to join several outputs from the reused
address.
'''
self.log.info("Test that full destination groups are preferred in coin selection")
# Node under test should be empty
assert_equal(self.nodes[1].getbalance(avoid_reuse=False), 0)
new_addr = self.nodes[1].getnewaddress()
ret_addr = self.nodes[0].getnewaddress()
# Send 11 outputs of 1 BTC to the same, reused address in the wallet
for _ in range(11):
self.nodes[0].sendtoaddress(new_addr, 1)
self.nodes[0].generate(1)
self.sync_all()
# Sending a transaction that is smaller than each one of the
# available outputs
txid = self.nodes[1].sendtoaddress(address=ret_addr, amount=0.5)
inputs = self.nodes[1].getrawtransaction(txid, 1)["vin"]
# The transaction should use 10 inputs exactly
assert_equal(len(inputs), 10)
def test_all_destination_groups_are_used(self):
'''
Test the case where [1] only has 22 outputs of 1 BTC in the same reused
address and tries to send a payment of 20.5 BTC. The wallet
should use all 22 outputs from the reused address as inputs.
'''
self.log.info("Test that all destination groups are used")
# Node under test should be empty
assert_equal(self.nodes[1].getbalance(avoid_reuse=False), 0)
new_addr = self.nodes[1].getnewaddress()
ret_addr = self.nodes[0].getnewaddress()
# Send 22 outputs of 1 BTC to the same, reused address in the wallet
for _ in range(22):
self.nodes[0].sendtoaddress(new_addr, 1)
self.nodes[0].generate(1)
self.sync_all()
# Sending a transaction that needs to use the full groups
# of 10 inputs but also the incomplete group of 2 inputs.
txid = self.nodes[1].sendtoaddress(address=ret_addr, amount=20.5)
inputs = self.nodes[1].getrawtransaction(txid, 1)["vin"]
# The transaction should use 22 inputs exactly
assert_equal(len(inputs), 22)
if __name__ == '__main__':
AvoidReuseTest().main()
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