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| 1 | +#!/usr/bin/env python3 |
| 2 | +# Copyright (c) 2017-2020 The Bitcoin Core developers |
| 3 | +# Distributed under the MIT software license, see the accompanying |
| 4 | +# file COPYING or http://www.opensource.org/licenses/mit-license.php. |
| 5 | + |
| 6 | +from decimal import Decimal |
| 7 | +from test_framework.test_framework import BitcoinTestFramework |
| 8 | +from test_framework.util import ( |
| 9 | + assert_equal, |
| 10 | + assert_raises_rpc_error, |
| 11 | +) |
| 12 | + |
| 13 | +class WalletTest(BitcoinTestFramework): |
| 14 | + def set_test_params(self): |
| 15 | + self.setup_clean_chain = False |
| 16 | + self.num_nodes = 2 |
| 17 | + args = [ |
| 18 | + "-blindedaddresses=1", |
| 19 | + "-minrelaytxfee=0.00000100", |
| 20 | + ] |
| 21 | + self.extra_args = [ |
| 22 | + args, |
| 23 | + args + ["-dustrelayfee=0.00003000"], # second node uses default upstream dustrelayfee |
| 24 | + ] |
| 25 | + |
| 26 | + def skip_test_if_missing_module(self): |
| 27 | + self.skip_if_no_wallet() |
| 28 | + |
| 29 | + def select_unblinded_utxo(self, node): |
| 30 | + for utxo in node.listunspent(): |
| 31 | + if utxo["amountblinder"] == "00" * 32: |
| 32 | + return utxo |
| 33 | + else: |
| 34 | + continue |
| 35 | + raise Exception("no unblinded utxo") |
| 36 | + |
| 37 | + def run_test(self): |
| 38 | + assert_equal(self.nodes[0].getbalance(), {'bitcoin': 1250}) |
| 39 | + assert_equal(self.nodes[1].getbalance(), {'bitcoin': 1250}) |
| 40 | + |
| 41 | + addr = self.nodes[0].getnewaddress() |
| 42 | + |
| 43 | + # test dust threshold for upstream dustrelayfee=3sat/vb |
| 44 | + # 495 sats should succeed for blinded output value |
| 45 | + amt = "0.00000495" |
| 46 | + self.nodes[1].sendtoaddress(address=addr, amount=amt) |
| 47 | + self.generate(self.nodes[1], 1, sync_fun=self.no_op) |
| 48 | + |
| 49 | + # 494 sats should fail for blinded output value |
| 50 | + amt = "0.00000494" |
| 51 | + assert_raises_rpc_error(-6, "Transaction amount too small", self.nodes[1].sendtoaddress, address=addr, amount=amt) |
| 52 | + |
| 53 | + addr = self.nodes[1].getnewaddress() |
| 54 | + |
| 55 | + # test dust threshold for elements default dustrelayfee=0.1sat/vb |
| 56 | + # 17 sats should succeed for blinded output value |
| 57 | + amt = "0.00000017" |
| 58 | + self.nodes[0].sendtoaddress(address=addr, amount=amt) |
| 59 | + self.generate(self.nodes[0], 1, sync_fun=self.no_op) |
| 60 | + |
| 61 | + # 16 sats should fail for blinded output value |
| 62 | + amt = "0.00000016" |
| 63 | + assert_raises_rpc_error(-6, "Transaction amount too small", self.nodes[0].sendtoaddress, address=addr, amount=amt) |
| 64 | + |
| 65 | + # a blinded transaction created manually can have an output value as low as 1 sat |
| 66 | + addr = self.nodes[1].getnewaddress() |
| 67 | + changeaddr = self.nodes[0].getnewaddress() |
| 68 | + utxo = self.nodes[0].listunspent()[0] |
| 69 | + amt = Decimal("0.00000001") |
| 70 | + fee = Decimal("0.00000258") |
| 71 | + change = utxo["amount"] - amt - fee |
| 72 | + inputs = [{"txid": utxo["txid"], "vout": utxo["vout"]}] |
| 73 | + outputs = [{addr: amt}, {changeaddr: change}, {"fee": fee}] |
| 74 | + raw = self.nodes[0].createrawtransaction(inputs, outputs) |
| 75 | + blinded = self.nodes[0].blindrawtransaction(raw) |
| 76 | + signed = self.nodes[0].signrawtransactionwithwallet(blinded) |
| 77 | + assert signed["complete"] |
| 78 | + tx = signed["hex"] |
| 79 | + assert self.nodes[1].testmempoolaccept([tx])[0]["allowed"] |
| 80 | + assert self.nodes[0].testmempoolaccept([tx])[0]["allowed"] |
| 81 | + assert_equal(self.nodes[1].sendrawtransaction(tx), self.nodes[0].sendrawtransaction(tx)) |
| 82 | + self.generate(self.nodes[0], 1, sync_fun=self.no_op) |
| 83 | + |
| 84 | + # explicit transactions have slightly smaller outputs |
| 85 | + # node 0 will accept an output value of 14 sats but node 1 will not |
| 86 | + addr = self.nodes[1].getnewaddress(address_type="bech32") |
| 87 | + changeaddr = self.nodes[0].getnewaddress(address_type="bech32") |
| 88 | + utxo = self.select_unblinded_utxo(self.nodes[0]) |
| 89 | + amt = Decimal("0.00000014") |
| 90 | + fee = Decimal("0.00000258") |
| 91 | + change = utxo["amount"] - amt - fee |
| 92 | + inputs = [{"txid": utxo["txid"], "vout": utxo["vout"]}] |
| 93 | + outputs = [{addr: amt}, {changeaddr: change}, {"fee": fee}] |
| 94 | + raw = self.nodes[0].createrawtransaction(inputs, outputs) |
| 95 | + signed = self.nodes[0].signrawtransactionwithwallet(raw) |
| 96 | + assert signed["complete"] |
| 97 | + tx = signed["hex"] |
| 98 | + assert self.nodes[0].testmempoolaccept([tx])[0]["allowed"] |
| 99 | + assert not self.nodes[1].testmempoolaccept([tx])[0]["allowed"] |
| 100 | + self.nodes[0].sendrawtransaction(tx) |
| 101 | + assert_raises_rpc_error(-26, "dust", self.nodes[1].sendrawtransaction, tx) |
| 102 | + self.generate(self.nodes[0], 1, sync_fun=self.no_op) |
| 103 | + |
| 104 | + # neither node will accept an explicit output value of 13 sats |
| 105 | + addr = self.nodes[1].getnewaddress(address_type="bech32") |
| 106 | + changeaddr = self.nodes[0].getnewaddress(address_type="bech32") |
| 107 | + utxo = self.select_unblinded_utxo(self.nodes[0]) |
| 108 | + amt = Decimal("0.00000013") |
| 109 | + fee = Decimal("0.00000258") |
| 110 | + change = utxo["amount"] - amt - fee |
| 111 | + inputs = [{"txid": utxo["txid"], "vout": utxo["vout"]}] |
| 112 | + outputs = [{addr: amt}, {changeaddr: change}, {"fee": fee}] |
| 113 | + raw = self.nodes[0].createrawtransaction(inputs, outputs) |
| 114 | + signed = self.nodes[0].signrawtransactionwithwallet(raw) |
| 115 | + assert signed["complete"] |
| 116 | + tx = signed["hex"] |
| 117 | + assert not self.nodes[0].testmempoolaccept([tx])[0]["allowed"] |
| 118 | + assert not self.nodes[1].testmempoolaccept([tx])[0]["allowed"] |
| 119 | + assert_raises_rpc_error(-26, "dust", self.nodes[0].sendrawtransaction, tx) |
| 120 | + assert_raises_rpc_error(-26, "dust", self.nodes[1].sendrawtransaction, tx) |
| 121 | + |
| 122 | +if __name__ == '__main__': |
| 123 | + WalletTest().main() |
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