149 lines
6.4 KiB
Python
Executable file
149 lines
6.4 KiB
Python
Executable file
#!/usr/bin/env python3
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# Copyright (c) 2014-2018 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 accounts properly when there are cloned transactions with malleated scriptsigs."""
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import (
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assert_equal,
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connect_nodes,
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disconnect_nodes,
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sync_blocks,
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)
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class TxnMallTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 4
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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(TxnMallTest, self).setup_network()
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disconnect_nodes(self.nodes[1], 2)
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disconnect_nodes(self.nodes[2], 1)
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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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# All nodes should start with 1,250 BTC:
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starting_balance = 1250
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for i in range(4):
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assert_equal(self.nodes[i].getbalance(), starting_balance)
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self.nodes[i].getnewaddress() # bug workaround, coins generated assigned to first getnewaddress!
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self.nodes[0].settxfee(.001)
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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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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.nodes[0].sendtoaddress(node1_address, 40)
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txid2 = self.nodes[0].sendtoaddress(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"]}]
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clone_outputs = {rawtx1["vout"][0]["scriptPubKey"]["addresses"][0]: rawtx1["vout"][0]["value"],
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rawtx1["vout"][1]["scriptPubKey"]["addresses"][0]: 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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# output 0 is at version+#inputs+input+sigstub+sequence+#outputs
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# 40 BTC serialized is 00286bee00000000
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pos0 = 2 * (4 + 1 + 36 + 1 + 4 + 1)
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hex40 = "00286bee00000000"
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output_len = 16 + 2 + 2 * int("0x" + clone_raw[pos0 + 16:pos0 + 16 + 2], 0)
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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):
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output0 = clone_raw[pos0:pos0 + output_len]
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output1 = clone_raw[pos0 + output_len:pos0 + 2 * output_len]
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clone_raw = clone_raw[:pos0] + output1 + output0 + clone_raw[pos0 + 2 * output_len:]
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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_raw, 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.nodes[0].generate(1)
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sync_blocks(self.nodes[0:2])
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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 = starting_balance + node0_tx1["fee"] + node0_tx2["fee"]
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if self.options.mine_block:
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expected += 50
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expected += tx1["amount"] + tx1["fee"]
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expected += tx2["amount"] + tx2["fee"]
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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.nodes[2].generate(1)
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# Reconnect the split network, and sync chain:
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connect_nodes(self.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.nodes[2].generate(1) # Mine another block to make sure we sync
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sync_blocks(self.nodes)
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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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# Check node0's total balance; should be same as before the clone, + 100 BTC for 2 matured,
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# less possible orphaned matured subsidy
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expected += 100
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if (self.options.mine_block):
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expected -= 50
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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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