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Add txn_clone.py test

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Does what the old txnmall.sh test did.

Creates an equivalent malleated clone and tests that SyncMetaData
syncs the accounting effects from the original transaction to the
confirmed clone.
This commit is contained in:
Tom Harding 2015-03-23 20:56:53 -07:00
parent defd2d55b7
commit 5d34e16d3a
2 changed files with 169 additions and 0 deletions
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2
qa/pull-tester/rpc-tests.sh
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@ -21,6 +21,8 @@ testScripts=(
'mempool_resurrect_test.py'
'txn_doublespend.py'
'txn_doublespend.py --mineblock'
'txn_clone.py'
'txn_clone.py --mineblock'
'getchaintips.py'
'rest.py'
'mempool_spendcoinbase.py'

167
qa/rpc-tests/txn_clone.py Executable file
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@ -0,0 +1,167 @@
#!/usr/bin/env python2
# Copyright (c) 2014 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 proper accounting with an equivalent malleability clone
#
from test_framework import BitcoinTestFramework
from bitcoinrpc.authproxy import AuthServiceProxy, JSONRPCException
from decimal import Decimal
from util import *
import os
import shutil
class TxnMallTest(BitcoinTestFramework):
def add_options(self, parser):
parser.add_option("--mineblock", dest="mine_block", default=False, action="store_true",
help="Test double-spend of 1-confirmed transaction")
def setup_network(self):
# Start with split network:
return super(TxnMallTest, self).setup_network(True)
def run_test(self):
# All nodes should start with 1,250 BTC:
starting_balance = 1250
for i in range(4):
assert_equal(self.nodes[i].getbalance(), starting_balance)
self.nodes[i].getnewaddress("") # bug workaround, coins generated assigned to first getnewaddress!
# Assign coins to foo and bar accounts:
self.nodes[0].settxfee(.001)
node0_address_foo = self.nodes[0].getnewaddress("foo")
fund_foo_txid = self.nodes[0].sendfrom("", node0_address_foo, 1219)
fund_foo_tx = self.nodes[0].gettransaction(fund_foo_txid)
node0_address_bar = self.nodes[0].getnewaddress("bar")
fund_bar_txid = self.nodes[0].sendfrom("", node0_address_bar, 29)
fund_bar_tx = self.nodes[0].gettransaction(fund_bar_txid)
assert_equal(self.nodes[0].getbalance(""),
starting_balance - 1219 - 29 + fund_foo_tx["fee"] + fund_bar_tx["fee"])
# Coins are sent to node1_address
node1_address = self.nodes[1].getnewaddress("from0")
# Send tx1, and another transaction tx2 that won't be cloned
txid1 = self.nodes[0].sendfrom("foo", node1_address, 40, 0)
txid2 = self.nodes[0].sendfrom("bar", node1_address, 20, 0)
# Construct a clone of tx1, to be malleated
rawtx1 = self.nodes[0].getrawtransaction(txid1,1)
clone_inputs = [{"txid":rawtx1["vin"][0]["txid"],"vout":rawtx1["vin"][0]["vout"]}]
clone_outputs = {rawtx1["vout"][0]["scriptPubKey"]["addresses"][0]:rawtx1["vout"][0]["value"],
rawtx1["vout"][1]["scriptPubKey"]["addresses"][0]:rawtx1["vout"][1]["value"]}
clone_raw = self.nodes[0].createrawtransaction(clone_inputs, clone_outputs)
# 3 hex manipulations on the clone are required
# manipulation 1. sequence is at version+#inputs+input+sigstub
posseq = 2*(4+1+36+1)
seqbe = '%08x' % rawtx1["vin"][0]["sequence"]
clone_raw = clone_raw[:posseq] + seqbe[6:8] + seqbe[4:6] + seqbe[2:4] + seqbe[0:2] + clone_raw[posseq + 8:]
# manipulation 2. createrawtransaction randomizes the order of its outputs, so swap them if necessary.
# output 0 is at version+#inputs+input+sigstub+sequence+#outputs
# 40 BTC serialized is 00286bee00000000
pos0 = 2*(4+1+36+1+4+1)
hex40 = "00286bee00000000"
output_len = 16 + 2 + 2 * int("0x" + clone_raw[pos0 + 16 : pos0 + 16 + 2], 0)
if (rawtx1["vout"][0]["value"] == 40 and clone_raw[pos0 : pos0 + 16] != hex40 or
rawtx1["vout"][0]["value"] != 40 and clone_raw[pos0 : pos0 + 16] == hex40):
output0 = clone_raw[pos0 : pos0 + output_len]
output1 = clone_raw[pos0 + output_len : pos0 + 2 * output_len]
clone_raw = clone_raw[:pos0] + output1 + output0 + clone_raw[pos0 + 2 * output_len:]
# manipulation 3. locktime is after outputs
poslt = pos0 + 2 * output_len
ltbe = '%08x' % rawtx1["locktime"]
clone_raw = clone_raw[:poslt] + ltbe[6:8] + ltbe[4:6] + ltbe[2:4] + ltbe[0:2] + clone_raw[poslt + 8:]
# Use a different signature hash type to sign. This creates an equivalent but malleated clone.
# Don't send the clone anywhere yet
tx1_clone = self.nodes[0].signrawtransaction(clone_raw, None, None, "ALL|ANYONECANPAY")
assert_equal(tx1_clone["complete"], True)
# Have node0 mine a block, if requested:
if (self.options.mine_block):
self.nodes[0].generate(1)
sync_blocks(self.nodes[0:2])
tx1 = self.nodes[0].gettransaction(txid1)
tx2 = self.nodes[0].gettransaction(txid2)
# Node0's balance should be starting balance, plus 50BTC for another
# matured block, minus tx1 and tx2 amounts, and minus transaction fees:
expected = starting_balance + fund_foo_tx["fee"] + fund_bar_tx["fee"]
if self.options.mine_block: expected += 50
expected += tx1["amount"] + tx1["fee"]
expected += tx2["amount"] + tx2["fee"]
assert_equal(self.nodes[0].getbalance(), expected)
# foo and bar accounts should be debited:
assert_equal(self.nodes[0].getbalance("foo", 0), 1219 + tx1["amount"] + tx1["fee"])
assert_equal(self.nodes[0].getbalance("bar", 0), 29 + tx2["amount"] + tx2["fee"])
if self.options.mine_block:
assert_equal(tx1["confirmations"], 1)
assert_equal(tx2["confirmations"], 1)
# Node1's "from0" balance should be both transaction amounts:
assert_equal(self.nodes[1].getbalance("from0"), -(tx1["amount"] + tx2["amount"]))
else:
assert_equal(tx1["confirmations"], 0)
assert_equal(tx2["confirmations"], 0)
# Send clone and its parent to miner
self.nodes[2].sendrawtransaction(fund_foo_tx["hex"])
txid1_clone = self.nodes[2].sendrawtransaction(tx1_clone["hex"])
# ... mine a block...
self.nodes[2].generate(1)
# Reconnect the split network, and sync chain:
connect_nodes(self.nodes[1], 2)
self.nodes[2].generate(1) # Mine another block to make sure we sync
sync_blocks(self.nodes)
# Re-fetch transaction info:
tx1 = self.nodes[0].gettransaction(txid1)
tx1_clone = self.nodes[0].gettransaction(txid1_clone)
tx2 = self.nodes[0].gettransaction(txid2)
# Verify expected confirmations
assert_equal(tx1["confirmations"], -1)
assert_equal(tx1_clone["confirmations"], 2)
assert_equal(tx2["confirmations"], 0)
# Check node0's total balance; should be same as before the clone, + 100 BTC for 2 matured,
# less possible orphaned matured subsidy
expected += 100
if (self.options.mine_block):
expected -= 50
assert_equal(self.nodes[0].getbalance(), expected)
assert_equal(self.nodes[0].getbalance("*", 0), expected)
# Check node0's individual account balances.
# "foo" should have been debited by the equivalent clone of tx1
assert_equal(self.nodes[0].getbalance("foo"), 1219 + tx1["amount"] + tx1["fee"])
# "bar" should have been debited by (possibly unconfirmed) tx2
assert_equal(self.nodes[0].getbalance("bar", 0), 29 + tx2["amount"] + tx2["fee"])
# "" should have starting balance, less funding txes, plus subsidies
assert_equal(self.nodes[0].getbalance("", 0), starting_balance
- 1219
+ fund_foo_tx["fee"]
- 29
+ fund_bar_tx["fee"]
+ 100)
# Node1's "from0" account balance
assert_equal(self.nodes[1].getbalance("from0", 0), -(tx1["amount"] + tx2["amount"]))
if __name__ == '__main__':
TxnMallTest().main()