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#!/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 Hierarchical Deterministic wallet function."""
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
connect_nodes_bi,
)
import shutil
class WalletHDTest(BitcoinTestFramework):
def __init__(self):
super().__init__()
self.setup_clean_chain = True
self.num_nodes = 2
self.extra_args = [['-usehd=0'], ['-usehd=1', '-keypool=0']]
def run_test (self):
tmpdir = self.options.tmpdir
# Make sure can't switch off usehd after wallet creation
self.stop_node(1)
self.assert_start_raises_init_error(1, ['-usehd=0'], 'already existing HD wallet')
self.start_node(1)
connect_nodes_bi(self.nodes, 0, 1)
# Make sure we use hd, keep masterkeyid
masterkeyid = self.nodes[1].getwalletinfo()['hdmasterkeyid']
assert_equal(len(masterkeyid), 40)
# create an internal key
change_addr = self.nodes[1].getrawchangeaddress()
change_addrV= self.nodes[1].validateaddress(change_addr)
assert_equal(change_addrV["hdkeypath"], "m/0'/1'/0'") #first internal child key
# Import a non-HD private key in the HD wallet
non_hd_add = self.nodes[0].getnewaddress()
self.nodes[1].importprivkey(self.nodes[0].dumpprivkey(non_hd_add))
# This should be enough to keep the master key and the non-HD key
self.nodes[1].backupwallet(tmpdir + "/hd.bak")
#self.nodes[1].dumpwallet(tmpdir + "/hd.dump")
# Derive some HD addresses and remember the last
# Also send funds to each add
self.nodes[0].generate(101)
hd_add = None
num_hd_adds = 300
for i in range(num_hd_adds):
hd_add = self.nodes[1].getnewaddress()
hd_info = self.nodes[1].validateaddress(hd_add)
assert_equal(hd_info["hdkeypath"], "m/0'/0'/"+str(i)+"'")
assert_equal(hd_info["hdmasterkeyid"], masterkeyid)
self.nodes[0].sendtoaddress(hd_add, 1)
self.nodes[0].generate(1)
self.nodes[0].sendtoaddress(non_hd_add, 1)
self.nodes[0].generate(1)
# create an internal key (again)
change_addr = self.nodes[1].getrawchangeaddress()
change_addrV= self.nodes[1].validateaddress(change_addr)
assert_equal(change_addrV["hdkeypath"], "m/0'/1'/1'") #second internal child key
self.sync_all()
assert_equal(self.nodes[1].getbalance(), num_hd_adds + 1)
self.log.info("Restore backup ...")
self.stop_node(1)
# we need to delete the complete regtest directory
# otherwise node1 would auto-recover all funds in flag the keypool keys as used
shutil.rmtree(tmpdir + "/node1/regtest/blocks")
shutil.rmtree(tmpdir + "/node1/regtest/chainstate")
shutil.copyfile(tmpdir + "/hd.bak", tmpdir + "/node1/regtest/wallet.dat")
self.start_node(1)
# Assert that derivation is deterministic
hd_add_2 = None
for _ in range(num_hd_adds):
hd_add_2 = self.nodes[1].getnewaddress()
hd_info_2 = self.nodes[1].validateaddress(hd_add_2)
assert_equal(hd_info_2["hdkeypath"], "m/0'/0'/"+str(_)+"'")
assert_equal(hd_info_2["hdmasterkeyid"], masterkeyid)
assert_equal(hd_add, hd_add_2)
connect_nodes_bi(self.nodes, 0, 1)
self.sync_all()
# Needs rescan
self.stop_node(1)
self.start_node(1, extra_args=self.extra_args[1] + ['-rescan'])
assert_equal(self.nodes[1].getbalance(), num_hd_adds + 1)
# send a tx and make sure its using the internal chain for the changeoutput
txid = self.nodes[1].sendtoaddress(self.nodes[0].getnewaddress(), 1)
outs = self.nodes[1].decoderawtransaction(self.nodes[1].gettransaction(txid)['hex'])['vout']
keypath = ""
for out in outs:
if out['value'] != 1:
keypath = self.nodes[1].validateaddress(out['scriptPubKey']['addresses'][0])['hdkeypath']
assert_equal(keypath[0:7], "m/0'/1'")
if __name__ == '__main__':
WalletHDTest().main ()
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