Initial Vexta Core v0.1.0 release
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test/functional/wallet_txn_clone.py
Executable file
168
test/functional/wallet_txn_clone.py
Executable file
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#!/usr/bin/env python3
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# Copyright (c) 2014-2021 The DigiByte 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 accounts properly when there are cloned transactions with malleated scriptsigs."""
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from test_framework.test_framework import DigiByteTestFramework
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from test_framework.util import (
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assert_equal,
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find_vout_for_address
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)
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from test_framework.messages import (
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COIN,
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tx_from_hex,
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)
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class TxnMallTest(DigiByteTestFramework):
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def set_test_params(self):
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self.num_nodes = 3
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self.supports_cli = False
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def skip_test_if_missing_module(self):
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self.skip_if_no_wallet()
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def add_options(self, parser):
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parser.add_argument("--mineblock", dest="mine_block", default=False, action="store_true",
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help="Test double-spend of 1-confirmed transaction")
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parser.add_argument("--segwit", dest="segwit", default=False, action="store_true",
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help="Test behaviour with SegWit txn (which should fail)")
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def setup_network(self):
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# Start with split network:
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super().setup_network()
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self.disconnect_nodes(1, 2)
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def spend_txid(self, txid, vout, outputs):
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inputs = [{"txid": txid, "vout": vout}]
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tx = self.nodes[0].createrawtransaction(inputs, outputs)
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tx = self.nodes[0].fundrawtransaction(tx)
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tx = self.nodes[0].signrawtransactionwithwallet(tx['hex'])
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return self.nodes[0].sendrawtransaction(tx['hex'])
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def run_test(self):
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if self.options.segwit:
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output_type = "p2sh-segwit"
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else:
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output_type = "legacy"
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# Mine mature funds locally instead of relying on cached wallet balances.
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self.generatetoaddress(self.nodes[0], 125, self.nodes[0].getnewaddress(), sync_fun=lambda: self.sync_blocks([self.nodes[0], self.nodes[1]]))
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starting_balance = self.nodes[0].getbalance()
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assert_equal(self.nodes[0].getbalance(), starting_balance)
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# Bring node2 to the same height before splitting for the malleated transaction test.
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self.connect_nodes(1, 2)
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self.sync_blocks()
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self.disconnect_nodes(1, 2)
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self.nodes[0].settxfee(0.1)
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node0_address1 = self.nodes[0].getnewaddress(address_type=output_type)
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node0_txid1 = self.nodes[0].sendtoaddress(node0_address1, 1219)
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node0_tx1 = self.nodes[0].gettransaction(node0_txid1)
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self.nodes[0].lockunspent(False, [{"txid":node0_txid1, "vout": find_vout_for_address(self.nodes[0], node0_txid1, node0_address1)}])
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node0_address2 = self.nodes[0].getnewaddress(address_type=output_type)
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node0_txid2 = self.nodes[0].sendtoaddress(node0_address2, 29)
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node0_tx2 = self.nodes[0].gettransaction(node0_txid2)
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assert_equal(self.nodes[0].getbalance(),
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starting_balance + node0_tx1["fee"] + node0_tx2["fee"])
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# Coins are sent to node1_address
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node1_address = self.nodes[1].getnewaddress()
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# Send tx1, and another transaction tx2 that won't be cloned
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txid1 = self.spend_txid(node0_txid1, find_vout_for_address(self.nodes[0], node0_txid1, node0_address1), {node1_address: 40})
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txid2 = self.spend_txid(node0_txid2, find_vout_for_address(self.nodes[0], node0_txid2, node0_address2), {node1_address: 20})
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# Construct a clone of tx1, to be malleated
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rawtx1 = self.nodes[0].getrawtransaction(txid1, 1)
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clone_inputs = [{"txid": rawtx1["vin"][0]["txid"], "vout": rawtx1["vin"][0]["vout"], "sequence": rawtx1["vin"][0]["sequence"]}]
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clone_outputs = {rawtx1["vout"][0]["scriptPubKey"]["address"]: rawtx1["vout"][0]["value"],
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rawtx1["vout"][1]["scriptPubKey"]["address"]: rawtx1["vout"][1]["value"]}
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clone_locktime = rawtx1["locktime"]
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clone_raw = self.nodes[0].createrawtransaction(clone_inputs, clone_outputs, clone_locktime)
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# createrawtransaction randomizes the order of its outputs, so swap them if necessary.
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clone_tx = tx_from_hex(clone_raw)
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if (rawtx1["vout"][0]["value"] == 40 and clone_tx.vout[0].nValue != 40*COIN or rawtx1["vout"][0]["value"] != 40 and clone_tx.vout[0].nValue == 40*COIN):
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(clone_tx.vout[0], clone_tx.vout[1]) = (clone_tx.vout[1], clone_tx.vout[0])
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# Use a different signature hash type to sign. This creates an equivalent but malleated clone.
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# Don't send the clone anywhere yet
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tx1_clone = self.nodes[0].signrawtransactionwithwallet(clone_tx.serialize().hex(), None, "ALL|ANYONECANPAY")
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assert_equal(tx1_clone["complete"], True)
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# Have node0 mine a block, if requested:
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if (self.options.mine_block):
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self.generate(self.nodes[0], 1, sync_fun=lambda: self.sync_blocks(self.nodes[0:2]))
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# Initialize expected variable
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expected = starting_balance + node0_tx1["fee"] + node0_tx2["fee"]
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expected += 50 # Add block reward for the mined block
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else:
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# Initialize expected variable for the case when mine_block is not set
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expected = starting_balance + node0_tx1["fee"] + node0_tx2["fee"]
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tx1 = self.nodes[0].gettransaction(txid1)
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tx2 = self.nodes[0].gettransaction(txid2)
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# Node0's balance should be starting balance, plus 50BTC for another
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# matured block, minus tx1 and tx2 amounts, and minus transaction fees:
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expected += tx1["amount"] + tx1["fee"]
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expected += tx2["amount"] + tx2["fee"]
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print(f"Actual balance: {self.nodes[0].getbalance()}")
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print(f"Expected balance: {expected}")
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assert_equal(self.nodes[0].getbalance(), expected)
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if self.options.mine_block:
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assert_equal(tx1["confirmations"], 1)
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assert_equal(tx2["confirmations"], 1)
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else:
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assert_equal(tx1["confirmations"], 0)
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assert_equal(tx2["confirmations"], 0)
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# Send clone and its parent to miner
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self.nodes[2].sendrawtransaction(node0_tx1["hex"])
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txid1_clone = self.nodes[2].sendrawtransaction(tx1_clone["hex"])
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if self.options.segwit:
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assert_equal(txid1, txid1_clone)
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return
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# ... mine a block...
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self.generate(self.nodes[2], 1, sync_fun=self.no_op)
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# Reconnect the split network, and sync chain:
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self.connect_nodes(1, 2)
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self.nodes[2].sendrawtransaction(node0_tx2["hex"])
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self.nodes[2].sendrawtransaction(tx2["hex"])
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self.generate(self.nodes[2], 1) # Mine another block to make sure we sync
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# Add block rewards from the mined blocks by node 2
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expected += 50 * 2 # 2 blocks mined by node 2
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# Re-fetch transaction info:
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tx1 = self.nodes[0].gettransaction(txid1)
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tx1_clone = self.nodes[0].gettransaction(txid1_clone)
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tx2 = self.nodes[0].gettransaction(txid2)
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# Verify expected confirmations
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assert_equal(tx1["confirmations"], -2)
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assert_equal(tx1_clone["confirmations"], 2)
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assert_equal(tx2["confirmations"], 1)
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if (self.options.mine_block):
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# In DigiByte, since COINBASE_MATURITY is only set to 8,
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# node0's txs are already matured. No emission will mature
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# even after calling a block.
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expected += -50
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print(f"Actual balance: {self.nodes[0].getbalance()}")
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print(f"Expected balance: {expected}")
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assert_equal(self.nodes[0].getbalance(), expected)
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if __name__ == '__main__':
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TxnMallTest().main()
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