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154 lines
7.3 KiB
154 lines
7.3 KiB
#!/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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# |
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# Test proper accounting with an equivalent malleability clone |
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# |
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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 TxnMallTest(BitcoinTestFramework): |
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def add_options(self, parser): |
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parser.add_option("--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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return super(TxnMallTest, self).setup_network(True) |
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def run_test(self): |
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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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# Assign coins to foo and bar accounts: |
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self.nodes[0].settxfee(.001) |
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node0_address_foo = self.nodes[0].getnewaddress("foo") |
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fund_foo_txid = self.nodes[0].sendfrom("", node0_address_foo, 1219) |
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fund_foo_tx = self.nodes[0].gettransaction(fund_foo_txid) |
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node0_address_bar = self.nodes[0].getnewaddress("bar") |
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fund_bar_txid = self.nodes[0].sendfrom("", node0_address_bar, 29) |
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fund_bar_tx = self.nodes[0].gettransaction(fund_bar_txid) |
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assert_equal(self.nodes[0].getbalance(""), |
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starting_balance - 1219 - 29 + fund_foo_tx["fee"] + fund_bar_tx["fee"]) |
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# Coins are sent to node1_address |
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node1_address = self.nodes[1].getnewaddress("from0") |
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# Send tx1, and another transaction tx2 that won't be cloned |
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txid1 = self.nodes[0].sendfrom("foo", node1_address, 40, 0) |
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txid2 = self.nodes[0].sendfrom("bar", node1_address, 20, 0) |
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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 |
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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].signrawtransaction(clone_raw, None, 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 + fund_foo_tx["fee"] + fund_bar_tx["fee"] |
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if self.options.mine_block: 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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# foo and bar accounts should be debited: |
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assert_equal(self.nodes[0].getbalance("foo", 0), 1219 + tx1["amount"] + tx1["fee"]) |
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assert_equal(self.nodes[0].getbalance("bar", 0), 29 + tx2["amount"] + tx2["fee"]) |
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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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# Node1's "from0" balance should be both transaction amounts: |
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assert_equal(self.nodes[1].getbalance("from0"), -(tx1["amount"] + tx2["amount"])) |
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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(fund_foo_tx["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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connect_nodes(self.nodes[1], 2) |
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self.nodes[2].sendrawtransaction(fund_bar_tx["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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assert_equal(self.nodes[0].getbalance("*", 0), expected) |
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# Check node0's individual account balances. |
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# "foo" should have been debited by the equivalent clone of tx1 |
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assert_equal(self.nodes[0].getbalance("foo"), 1219 + tx1["amount"] + tx1["fee"]) |
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# "bar" should have been debited by (possibly unconfirmed) tx2 |
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assert_equal(self.nodes[0].getbalance("bar", 0), 29 + tx2["amount"] + tx2["fee"]) |
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# "" should have starting balance, less funding txes, plus subsidies |
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assert_equal(self.nodes[0].getbalance("", 0), starting_balance |
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- 1219 |
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+ fund_foo_tx["fee"] |
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- 29 |
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+ fund_bar_tx["fee"] |
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+ 100) |
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# Node1's "from0" account balance |
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assert_equal(self.nodes[1].getbalance("from0", 0), -(tx1["amount"] + tx2["amount"])) |
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if __name__ == '__main__': |
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TxnMallTest().main() |
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