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210 lines
10 KiB
210 lines
10 KiB
9 years ago
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#!/usr/bin/env python3
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# Copyright (c) 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 the SegWit changeover logic
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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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from test_framework.mininode import sha256, ripemd160
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import os
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import shutil
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NODE_0 = 0
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NODE_1 = 1
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NODE_2 = 2
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WIT_V0 = 0
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WIT_V1 = 1
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def witness_script(version, pubkey):
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if (version == 0):
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pubkeyhash = bytes_to_hex_str(ripemd160(sha256(hex_str_to_bytes(pubkey))))
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pkscript = "0014" + pubkeyhash
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elif (version == 1):
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# 1-of-1 multisig
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scripthash = bytes_to_hex_str(sha256(hex_str_to_bytes("5121" + pubkey + "51ae")))
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pkscript = "0020" + scripthash
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else:
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assert("Wrong version" == "0 or 1")
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return pkscript
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def addlength(script):
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scriptlen = format(len(script)//2, 'x')
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assert(len(scriptlen) == 2)
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return scriptlen + script
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def create_witnessprogram(version, node, utxo, pubkey, encode_p2sh, amount):
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pkscript = witness_script(version, pubkey);
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if (encode_p2sh):
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p2sh_hash = bytes_to_hex_str(ripemd160(sha256(hex_str_to_bytes(pkscript))))
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pkscript = "a914"+p2sh_hash+"87"
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inputs = []
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outputs = {}
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inputs.append({ "txid" : utxo["txid"], "vout" : utxo["vout"]} )
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DUMMY_P2SH = "2MySexEGVzZpRgNQ1JdjdP5bRETznm3roQ2" # P2SH of "OP_1 OP_DROP"
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outputs[DUMMY_P2SH] = amount
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tx_to_witness = node.createrawtransaction(inputs,outputs)
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#replace dummy output with our own
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tx_to_witness = tx_to_witness[0:110] + addlength(pkscript) + tx_to_witness[-8:]
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return tx_to_witness
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def send_to_witness(version, node, utxo, pubkey, encode_p2sh, amount, sign=True, insert_redeem_script=""):
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tx_to_witness = create_witnessprogram(version, node, utxo, pubkey, encode_p2sh, amount)
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if (sign):
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signed = node.signrawtransaction(tx_to_witness)
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assert("errors" not in signed or len(["errors"]) == 0)
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return node.sendrawtransaction(signed["hex"])
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else:
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if (insert_redeem_script):
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tx_to_witness = tx_to_witness[0:82] + addlength(insert_redeem_script) + tx_to_witness[84:]
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return node.sendrawtransaction(tx_to_witness)
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def getutxo(txid):
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utxo = {}
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utxo["vout"] = 0
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utxo["txid"] = txid
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return utxo
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class SegWitTest(BitcoinTestFramework):
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def setup_chain(self):
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print("Initializing test directory "+self.options.tmpdir)
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initialize_chain_clean(self.options.tmpdir, 3)
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def setup_network(self):
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self.nodes = []
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self.nodes.append(start_node(0, self.options.tmpdir, ["-logtimemicros", "-debug", "-walletprematurewitness"]))
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self.nodes.append(start_node(1, self.options.tmpdir, ["-logtimemicros", "-debug", "-blockversion=4", "-promiscuousmempoolflags=517", "-prematurewitness", "-walletprematurewitness"]))
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self.nodes.append(start_node(2, self.options.tmpdir, ["-logtimemicros", "-debug", "-blockversion=536870915", "-promiscuousmempoolflags=517", "-prematurewitness", "-walletprematurewitness"]))
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connect_nodes(self.nodes[1], 0)
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connect_nodes(self.nodes[2], 1)
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connect_nodes(self.nodes[0], 2)
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self.is_network_split = False
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self.sync_all()
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def success_mine(self, node, txid, sign, redeem_script=""):
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send_to_witness(1, node, getutxo(txid), self.pubkey[0], False, Decimal("49.998"), sign, redeem_script)
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block = node.generate(1)
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assert_equal(len(node.getblock(block[0])["tx"]), 2)
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sync_blocks(self.nodes)
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def skip_mine(self, node, txid, sign, redeem_script=""):
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send_to_witness(1, node, getutxo(txid), self.pubkey[0], False, Decimal("49.998"), sign, redeem_script)
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block = node.generate(1)
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assert_equal(len(node.getblock(block[0])["tx"]), 1)
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sync_blocks(self.nodes)
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def fail_accept(self, node, txid, sign, redeem_script=""):
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try:
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send_to_witness(1, node, getutxo(txid), self.pubkey[0], False, Decimal("49.998"), sign, redeem_script)
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except JSONRPCException as exp:
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assert(exp.error["code"] == -26)
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else:
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raise AssertionError("Tx should not have been accepted")
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def fail_mine(self, node, txid, sign, redeem_script=""):
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send_to_witness(1, node, getutxo(txid), self.pubkey[0], False, Decimal("49.998"), sign, redeem_script)
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try:
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node.generate(1)
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except JSONRPCException as exp:
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assert(exp.error["code"] == -1)
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else:
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raise AssertionError("Created valid block when TestBlockValidity should have failed")
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sync_blocks(self.nodes)
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def run_test(self):
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self.nodes[0].generate(160) #block 160
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self.pubkey = []
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p2sh_ids = [] # p2sh_ids[NODE][VER] is an array of txids that spend to a witness version VER pkscript to an address for NODE embedded in p2sh
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wit_ids = [] # wit_ids[NODE][VER] is an array of txids that spend to a witness version VER pkscript to an address for NODE via bare witness
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for i in range(3):
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newaddress = self.nodes[i].getnewaddress()
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self.pubkey.append(self.nodes[i].validateaddress(newaddress)["pubkey"])
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multiaddress = self.nodes[i].addmultisigaddress(1, [self.pubkey[-1]])
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self.nodes[i].addwitnessaddress(newaddress)
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self.nodes[i].addwitnessaddress(multiaddress)
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p2sh_ids.append([])
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wit_ids.append([])
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for v in range(2):
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p2sh_ids[i].append([])
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wit_ids[i].append([])
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for i in range(5):
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for n in range(3):
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for v in range(2):
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wit_ids[n][v].append(send_to_witness(v, self.nodes[0], self.nodes[0].listunspent()[0], self.pubkey[n], False, Decimal("49.999")))
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p2sh_ids[n][v].append(send_to_witness(v, self.nodes[0], self.nodes[0].listunspent()[0], self.pubkey[n], True, Decimal("49.999")))
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self.nodes[0].generate(1) #block 161
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sync_blocks(self.nodes)
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# Make sure all nodes recognize the transactions as theirs
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assert_equal(self.nodes[0].getbalance(), 60*50 - 60*50 + 20*Decimal("49.999") + 50)
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assert_equal(self.nodes[1].getbalance(), 20*Decimal("49.999"))
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assert_equal(self.nodes[2].getbalance(), 20*Decimal("49.999"))
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self.nodes[0].generate(262) #block 423
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sync_blocks(self.nodes)
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print("Verify default node can't accept any witness format txs before fork")
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# unsigned, no scriptsig
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self.fail_accept(self.nodes[0], wit_ids[NODE_0][WIT_V0][0], False)
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self.fail_accept(self.nodes[0], wit_ids[NODE_0][WIT_V1][0], False)
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self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V0][0], False)
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self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V1][0], False)
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# unsigned with redeem script
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self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V0][0], False, addlength(witness_script(0, self.pubkey[0])))
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self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V1][0], False, addlength(witness_script(1, self.pubkey[0])))
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# signed
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self.fail_accept(self.nodes[0], wit_ids[NODE_0][WIT_V0][0], True)
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self.fail_accept(self.nodes[0], wit_ids[NODE_0][WIT_V1][0], True)
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self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V0][0], True)
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self.fail_accept(self.nodes[0], p2sh_ids[NODE_0][WIT_V1][0], True)
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print("Verify witness txs are skipped for mining before the fork")
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self.skip_mine(self.nodes[2], wit_ids[NODE_2][WIT_V0][0], True) #block 424
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self.skip_mine(self.nodes[2], wit_ids[NODE_2][WIT_V1][0], True) #block 425
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self.skip_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V0][0], True) #block 426
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self.skip_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V1][0], True) #block 427
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# TODO: An old node would see these txs without witnesses and be able to mine them
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print("Verify unsigned bare witness txs in versionbits-setting blocks are valid before the fork")
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self.success_mine(self.nodes[2], wit_ids[NODE_2][WIT_V0][1], False) #block 428
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self.success_mine(self.nodes[2], wit_ids[NODE_2][WIT_V1][1], False) #block 429
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print("Verify unsigned p2sh witness txs without a redeem script are invalid")
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self.fail_accept(self.nodes[2], p2sh_ids[NODE_2][WIT_V0][1], False)
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self.fail_accept(self.nodes[2], p2sh_ids[NODE_2][WIT_V1][1], False)
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print("Verify unsigned p2sh witness txs with a redeem script in versionbits-settings blocks are valid before the fork")
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self.success_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V0][1], False, addlength(witness_script(0, self.pubkey[2]))) #block 430
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self.success_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V1][1], False, addlength(witness_script(1, self.pubkey[2]))) #block 431
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print("Verify previous witness txs skipped for mining can now be mined")
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assert_equal(len(self.nodes[2].getrawmempool()), 4)
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block = self.nodes[2].generate(1) #block 432 (first block with new rules; 432 = 144 * 3)
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sync_blocks(self.nodes)
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assert_equal(len(self.nodes[2].getrawmempool()), 0)
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assert_equal(len(self.nodes[2].getblock(block[0])["tx"]), 5)
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print("Verify witness txs without witness data are invalid after the fork")
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self.fail_mine(self.nodes[2], wit_ids[NODE_2][WIT_V0][2], False)
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self.fail_mine(self.nodes[2], wit_ids[NODE_2][WIT_V1][2], False)
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self.fail_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V0][2], False, addlength(witness_script(0, self.pubkey[2])))
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self.fail_mine(self.nodes[2], p2sh_ids[NODE_2][WIT_V1][2], False, addlength(witness_script(1, self.pubkey[2])))
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print("Verify default node can now use witness txs")
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self.success_mine(self.nodes[0], wit_ids[NODE_0][WIT_V0][0], True) #block 432
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self.success_mine(self.nodes[0], wit_ids[NODE_0][WIT_V1][0], True) #block 433
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self.success_mine(self.nodes[0], p2sh_ids[NODE_0][WIT_V0][0], True) #block 434
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self.success_mine(self.nodes[0], p2sh_ids[NODE_0][WIT_V1][0], True) #block 435
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if __name__ == '__main__':
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SegWitTest().main()
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