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bdb8b9a347e68f80a2e8d44ce5590a2e8214b6bb test: doc: improve doc for `from_hex` helper (mention `to_hex` alternative) (Sebastian Falbesoner) 191405420815d49ab50184513717a303fc2744d6 scripted-diff: test: rename `FromHex` to `from_hex` (Sebastian Falbesoner) a79396fe5f8f81c78cf84117a87074c6ff6c9d95 test: remove `ToHex` helper, use .serialize().hex() instead (Sebastian Falbesoner) 2ce7b47958c4a10ba20dc86c011d71cda4b070a5 test: introduce `tx_from_hex` helper for tx deserialization (Sebastian Falbesoner) Pull request description: There are still many functional tests that perform conversions from a hex-string to a message object (deserialization) manually. This PR identifies all those instances and replaces them with a newly introduced helper `tx_from_hex`. Instances were found via * `git grep "deserialize.*BytesIO"` and some of them manually, when it were not one-liners. Further, the helper `ToHex` was removed and simply replaced by `.serialize().hex()`, since now both variants are in use (sometimes even within the same test) and using the helper doesn't really have an advantage in readability. (see discussion https://github.com/bitcoin/bitcoin/pull/22257#discussion_r652404782) ACKs for top commit: MarcoFalke: review re-ACK bdb8b9a347e68f80a2e8d44ce5590a2e8214b6bb 😁 Tree-SHA512: e25d7dc85918de1d6755a5cea65471b07a743204c20ad1c2f71ff07ef48cc1b9ad3fe5f515c1efaba2b2e3d89384e7980380c5d81895f9826e2046808cd3266e
134 lines
5.7 KiB
Python
Executable File
134 lines
5.7 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 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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)
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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(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 4
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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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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 run_test(self):
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# All nodes should start with 12,500 DASH:
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starting_balance = 12500
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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()
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node0_txid1 = self.nodes[0].sendtoaddress(node0_address1, 12190)
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node0_tx1 = self.nodes[0].gettransaction(node0_txid1)
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node0_address2 = self.nodes[0].getnewaddress()
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node0_txid2 = self.nodes[0].sendtoaddress(node0_address2, 290)
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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, 400)
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txid2 = self.nodes[0].sendtoaddress(node1_address, 200)
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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"]["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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clone_tx = tx_from_hex(clone_raw)
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if (rawtx1["vout"][0]["value"] == 400 and clone_tx.vout[0].nValue != 400*COIN or rawtx1["vout"][0]["value"] != 400 and clone_tx.vout[0].nValue == 400*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.nodes[0].generate(1)
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self.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 500DASH 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 += 500
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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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# ... 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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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.nodes[2].generate(1) # Mine another block to make sure we sync
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self.sync_blocks()
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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, + 1000 DASH for 2 matured,
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# less possible orphaned matured subsidy
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expected += 1000
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if (self.options.mine_block):
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expected -= 500
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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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