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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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"""Test NULLDUMMY softfork.
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Connect to a single node.
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Generate 2 blocks (save the coinbases for later).
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Generate 427 more blocks.
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[Policy/Consensus] Check that NULLDUMMY compliant transactions are accepted in the 430th block.
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[Policy] Check that non-NULLDUMMY transactions are rejected before activation.
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[Consensus] Check that the new NULLDUMMY rules are not enforced on the 431st block.
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[Policy/Consensus] Check that the new NULLDUMMY rules are enforced on the 432nd block.
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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 CTransaction, NetworkThread
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from test_framework.blocktools import create_coinbase, create_block, add_witness_commitment
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from test_framework.script import CScript
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from io import BytesIO
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import time
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NULLDUMMY_ERROR = "64: non-mandatory-script-verify-flag (Dummy CHECKMULTISIG argument must be zero)"
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def trueDummy(tx):
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scriptSig = CScript(tx.vin[0].scriptSig)
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newscript = []
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for i in scriptSig:
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if (len(newscript) == 0):
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assert(len(i) == 0)
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newscript.append(b'\x51')
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else:
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newscript.append(i)
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tx.vin[0].scriptSig = CScript(newscript)
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tx.rehash()
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class NULLDUMMYTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 1
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self.setup_clean_chain = True
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self.extra_args = [['-whitelist=127.0.0.1', '-walletprematurewitness']]
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def run_test(self):
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self.address = self.nodes[0].getnewaddress()
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self.ms_address = self.nodes[0].addmultisigaddress(1,[self.address])
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self.wit_address = self.nodes[0].addwitnessaddress(self.address)
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self.wit_ms_address = self.nodes[0].addwitnessaddress(self.ms_address)
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NetworkThread().start() # Start up network handling in another thread
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self.coinbase_blocks = self.nodes[0].generate(2) # Block 2
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coinbase_txid = []
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for i in self.coinbase_blocks:
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coinbase_txid.append(self.nodes[0].getblock(i)['tx'][0])
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self.nodes[0].generate(427) # Block 429
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self.lastblockhash = self.nodes[0].getbestblockhash()
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self.tip = int("0x" + self.lastblockhash, 0)
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self.lastblockheight = 429
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self.lastblocktime = int(time.time()) + 429
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self.log.info("Test 1: NULLDUMMY compliant base transactions should be accepted to mempool and mined before activation [430]")
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test1txs = [self.create_transaction(self.nodes[0], coinbase_txid[0], self.ms_address, 49)]
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txid1 = self.nodes[0].sendrawtransaction(bytes_to_hex_str(test1txs[0].serialize_with_witness()), True)
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test1txs.append(self.create_transaction(self.nodes[0], txid1, self.ms_address, 48))
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txid2 = self.nodes[0].sendrawtransaction(bytes_to_hex_str(test1txs[1].serialize_with_witness()), True)
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test1txs.append(self.create_transaction(self.nodes[0], coinbase_txid[1], self.wit_ms_address, 49))
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txid3 = self.nodes[0].sendrawtransaction(bytes_to_hex_str(test1txs[2].serialize_with_witness()), True)
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self.block_submit(self.nodes[0], test1txs, False, True)
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self.log.info("Test 2: Non-NULLDUMMY base multisig transaction should not be accepted to mempool before activation")
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test2tx = self.create_transaction(self.nodes[0], txid2, self.ms_address, 47)
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trueDummy(test2tx)
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assert_raises_jsonrpc(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, bytes_to_hex_str(test2tx.serialize_with_witness()), True)
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self.log.info("Test 3: Non-NULLDUMMY base transactions should be accepted in a block before activation [431]")
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self.block_submit(self.nodes[0], [test2tx], False, True)
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self.log.info("Test 4: Non-NULLDUMMY base multisig transaction is invalid after activation")
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test4tx = self.create_transaction(self.nodes[0], test2tx.hash, self.address, 46)
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test6txs=[CTransaction(test4tx)]
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trueDummy(test4tx)
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assert_raises_jsonrpc(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, bytes_to_hex_str(test4tx.serialize_with_witness()), True)
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self.block_submit(self.nodes[0], [test4tx])
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self.log.info("Test 5: Non-NULLDUMMY P2WSH multisig transaction invalid after activation")
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test5tx = self.create_transaction(self.nodes[0], txid3, self.wit_address, 48)
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test6txs.append(CTransaction(test5tx))
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test5tx.wit.vtxinwit[0].scriptWitness.stack[0] = b'\x01'
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assert_raises_jsonrpc(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, bytes_to_hex_str(test5tx.serialize_with_witness()), True)
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self.block_submit(self.nodes[0], [test5tx], True)
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self.log.info("Test 6: NULLDUMMY compliant base/witness transactions should be accepted to mempool and in block after activation [432]")
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for i in test6txs:
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self.nodes[0].sendrawtransaction(bytes_to_hex_str(i.serialize_with_witness()), True)
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self.block_submit(self.nodes[0], test6txs, True, True)
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def create_transaction(self, node, txid, to_address, amount):
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inputs = [{ "txid" : txid, "vout" : 0}]
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outputs = { to_address : amount }
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rawtx = node.createrawtransaction(inputs, outputs)
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signresult = node.signrawtransaction(rawtx)
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tx = CTransaction()
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f = BytesIO(hex_str_to_bytes(signresult['hex']))
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tx.deserialize(f)
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return tx
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def block_submit(self, node, txs, witness = False, accept = False):
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block = create_block(self.tip, create_coinbase(self.lastblockheight + 1), self.lastblocktime + 1)
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block.nVersion = 4
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for tx in txs:
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tx.rehash()
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block.vtx.append(tx)
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block.hashMerkleRoot = block.calc_merkle_root()
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witness and add_witness_commitment(block)
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block.rehash()
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block.solve()
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node.submitblock(bytes_to_hex_str(block.serialize(True)))
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if (accept):
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assert_equal(node.getbestblockhash(), block.hash)
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self.tip = block.sha256
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self.lastblockhash = block.hash
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self.lastblocktime += 1
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self.lastblockheight += 1
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else:
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assert_equal(node.getbestblockhash(), self.lastblockhash)
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if __name__ == '__main__':
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NULLDUMMYTest().main()
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