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b6116b20c0
5d465e396 Ensure backupwallet fails when attempting to backup to source file (Tomas van der Wansem)
Pull request description:
Previous behaviour was to destroy the wallet (to zero-length)
This fixes #11375
Tree-SHA512: bfd1738659b15e3f23b6bbdf55ec12269c62c820bf701daec19500b52bd5845bb5516733c6f76f36197eb155182a8a35dc239ad4de2ef1e59bbb0f124a455759
208 lines
7.2 KiB
Python
Executable File
208 lines
7.2 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2014-2016 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test the wallet backup features.
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Test case is:
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4 nodes. 1 2 and 3 send transactions between each other,
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fourth node is a miner.
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1 2 3 each mine a block to start, then
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Miner creates 100 blocks so 1 2 3 each have 500 mature
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coins to spend.
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Then 5 iterations of 1/2/3 sending coins amongst
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themselves to get transactions in the wallets,
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and the miner mining one block.
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Wallets are backed up using dumpwallet/backupwallet.
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Then 5 more iterations of transactions and mining a block.
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Miner then generates 101 more blocks, so any
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transaction fees paid mature.
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Sanity check:
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Sum(1,2,3,4 balances) == 114*500
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1/2/3 are shutdown, and their wallets erased.
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Then restore using wallet.dat backup. And
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confirm 1/2/3/4 balances are same as before.
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Shutdown again, restore using importwallet,
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and confirm again balances are correct.
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"""
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from random import randint
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import shutil
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import *
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class WalletBackupTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 4
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self.setup_clean_chain = True
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# nodes 1, 2,3 are spenders, let's give them a keypool=100
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self.extra_args = [["-keypool=100"], ["-keypool=100"], ["-keypool=100"], []]
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def setup_network(self, split=False):
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self.setup_nodes()
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connect_nodes(self.nodes[0], 3)
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connect_nodes(self.nodes[1], 3)
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connect_nodes(self.nodes[2], 3)
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connect_nodes(self.nodes[2], 0)
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self.sync_all()
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def one_send(self, from_node, to_address):
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if (randint(1,2) == 1):
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amount = Decimal(randint(1,10)) / Decimal(10)
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self.nodes[from_node].sendtoaddress(to_address, amount)
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def do_one_round(self):
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a0 = self.nodes[0].getnewaddress()
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a1 = self.nodes[1].getnewaddress()
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a2 = self.nodes[2].getnewaddress()
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self.one_send(0, a1)
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self.one_send(0, a2)
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self.one_send(1, a0)
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self.one_send(1, a2)
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self.one_send(2, a0)
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self.one_send(2, a1)
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# Have the miner (node3) mine a block.
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# Must sync mempools before mining.
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sync_mempools(self.nodes)
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self.nodes[3].generate(1)
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sync_blocks(self.nodes)
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# As above, this mirrors the original bash test.
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def start_three(self):
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self.start_node(0)
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self.start_node(1)
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self.start_node(2)
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connect_nodes(self.nodes[0], 3)
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connect_nodes(self.nodes[1], 3)
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connect_nodes(self.nodes[2], 3)
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connect_nodes(self.nodes[2], 0)
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def stop_three(self):
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self.stop_node(0)
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self.stop_node(1)
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self.stop_node(2)
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def erase_three(self):
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os.remove(self.options.tmpdir + "/node0/regtest/wallet.dat")
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os.remove(self.options.tmpdir + "/node1/regtest/wallet.dat")
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os.remove(self.options.tmpdir + "/node2/regtest/wallet.dat")
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def run_test(self):
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self.log.info("Generating initial blockchain")
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self.nodes[0].generate(1)
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sync_blocks(self.nodes)
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self.nodes[1].generate(1)
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sync_blocks(self.nodes)
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self.nodes[2].generate(1)
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sync_blocks(self.nodes)
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self.nodes[3].generate(100)
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sync_blocks(self.nodes)
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assert_equal(self.nodes[0].getbalance(), 500)
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assert_equal(self.nodes[1].getbalance(), 500)
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assert_equal(self.nodes[2].getbalance(), 500)
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assert_equal(self.nodes[3].getbalance(), 0)
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self.log.info("Creating transactions")
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# Five rounds of sending each other transactions.
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for i in range(5):
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self.do_one_round()
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self.log.info("Backing up")
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tmpdir = self.options.tmpdir
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self.nodes[0].backupwallet(tmpdir + "/node0/wallet.bak")
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self.nodes[0].dumpwallet(tmpdir + "/node0/wallet.dump")
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self.nodes[1].backupwallet(tmpdir + "/node1/wallet.bak")
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self.nodes[1].dumpwallet(tmpdir + "/node1/wallet.dump")
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self.nodes[2].backupwallet(tmpdir + "/node2/wallet.bak")
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self.nodes[2].dumpwallet(tmpdir + "/node2/wallet.dump")
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self.log.info("More transactions")
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for i in range(5):
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self.do_one_round()
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# Generate 101 more blocks, so any fees paid mature
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self.nodes[3].generate(101)
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self.sync_all()
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balance0 = self.nodes[0].getbalance()
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balance1 = self.nodes[1].getbalance()
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balance2 = self.nodes[2].getbalance()
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balance3 = self.nodes[3].getbalance()
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total = balance0 + balance1 + balance2 + balance3
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# At this point, there are 214 blocks (103 for setup, then 10 rounds, then 101.)
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# 114 are mature, so the sum of all wallets should be 114 * 500 = 57000.
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assert_equal(total, 57000)
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##
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# Test restoring spender wallets from backups
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##
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self.log.info("Restoring using wallet.dat")
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self.stop_three()
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self.erase_three()
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# Start node2 with no chain
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shutil.rmtree(self.options.tmpdir + "/node2/regtest/blocks")
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shutil.rmtree(self.options.tmpdir + "/node2/regtest/chainstate")
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shutil.rmtree(self.options.tmpdir + "/node2/regtest/evodb")
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# Restore wallets from backup
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shutil.copyfile(tmpdir + "/node0/wallet.bak", tmpdir + "/node0/regtest/wallet.dat")
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shutil.copyfile(tmpdir + "/node1/wallet.bak", tmpdir + "/node1/regtest/wallet.dat")
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shutil.copyfile(tmpdir + "/node2/wallet.bak", tmpdir + "/node2/regtest/wallet.dat")
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self.log.info("Re-starting nodes")
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self.start_three()
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sync_blocks(self.nodes)
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assert_equal(self.nodes[0].getbalance(), balance0)
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assert_equal(self.nodes[1].getbalance(), balance1)
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assert_equal(self.nodes[2].getbalance(), balance2)
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self.log.info("Restoring using dumped wallet")
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self.stop_three()
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self.erase_three()
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#start node2 with no chain
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shutil.rmtree(self.options.tmpdir + "/node2/regtest/blocks")
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shutil.rmtree(self.options.tmpdir + "/node2/regtest/chainstate")
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shutil.rmtree(self.options.tmpdir + "/node2/regtest/evodb")
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self.start_three()
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assert_equal(self.nodes[0].getbalance(), 0)
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assert_equal(self.nodes[1].getbalance(), 0)
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assert_equal(self.nodes[2].getbalance(), 0)
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self.nodes[0].importwallet(tmpdir + "/node0/wallet.dump")
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self.nodes[1].importwallet(tmpdir + "/node1/wallet.dump")
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self.nodes[2].importwallet(tmpdir + "/node2/wallet.dump")
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sync_blocks(self.nodes)
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assert_equal(self.nodes[0].getbalance(), balance0)
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assert_equal(self.nodes[1].getbalance(), balance1)
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assert_equal(self.nodes[2].getbalance(), balance2)
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# Backup to source wallet file must fail
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sourcePaths = [
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tmpdir + "/node0/regtest/wallet.dat",
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tmpdir + "/node0/./regtest/wallet.dat",
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tmpdir + "/node0/regtest/",
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tmpdir + "/node0/regtest"]
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for sourcePath in sourcePaths:
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assert_raises_rpc_error(-4, "backup failed", self.nodes[0].backupwallet, sourcePath)
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if __name__ == '__main__':
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WalletBackupTest().main()
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