qa/rpc-tests/nulldummy.py

   1 #!/usr/bin/env python3
   2 # Copyright (c) 2016 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 test_framework.test_framework import BitcoinTestFramework
   7 from test_framework.util import *
   8 from test_framework.mininode import CTransaction, NetworkThread
   9 from test_framework.blocktools import create_coinbase, create_block, add_witness_commitment
  10 from test_framework.script import CScript
  11 from io import BytesIO
  12 import time
  13
  14 NULLDUMMY_ERROR = "64: non-mandatory-script-verify-flag (Dummy CHECKMULTISIG argument must be zero)"
  15
  16 def trueDummy(tx):
  17     scriptSig = CScript(tx.vin[0].scriptSig)
  18     newscript = []
  19     for i in scriptSig:
  20         if (len(newscript) == 0):
  21             assert(len(i) == 0)
  22             newscript.append(b'\x51')
  23         else:
  24             newscript.append(i)
  25     tx.vin[0].scriptSig = CScript(newscript)
  26     tx.rehash()
  27
  28 '''
  29 This test is meant to exercise NULLDUMMY softfork.
  30 Connect to a single node.
  31 Generate 2 blocks (save the coinbases for later).
  32 Generate 427 more blocks.
  33 [Policy/Consensus] Check that NULLDUMMY compliant transactions are accepted in the 430th block.
  34 [Policy] Check that non-NULLDUMMY transactions are rejected before activation.
  35 [Consensus] Check that the new NULLDUMMY rules are not enforced on the 431st block.
  36 [Policy/Consensus] Check that the new NULLDUMMY rules are enforced on the 432nd block.
  37 '''
  38
  39 class NULLDUMMYTest(BitcoinTestFramework):
  40
  41     def __init__(self):
  42         super().__init__()
  43         self.num_nodes = 1
  44         self.setup_clean_chain = True
  45
  46     def setup_network(self):
  47         # Must set the blockversion for this test
  48         self.nodes = start_nodes(self.num_nodes, self.options.tmpdir,
  49                                  extra_args=[['-debug', '-whitelist=127.0.0.1', '-walletprematurewitness']])
  50
  51     def run_test(self):
  52         self.address = self.nodes[0].getnewaddress()
  53         self.ms_address = self.nodes[0].addmultisigaddress(1,[self.address])
  54         self.wit_address = self.nodes[0].addwitnessaddress(self.address)
  55         self.wit_ms_address = self.nodes[0].addwitnessaddress(self.ms_address)
  56
  57         NetworkThread().start() # Start up network handling in another thread
  58         self.coinbase_blocks = self.nodes[0].generate(2) # Block 2
  59         coinbase_txid = []
  60         for i in self.coinbase_blocks:
  61             coinbase_txid.append(self.nodes[0].getblock(i)['tx'][0])
  62         self.nodes[0].generate(427) # Block 429
  63         self.lastblockhash = self.nodes[0].getbestblockhash()
  64         self.tip = int("0x" + self.lastblockhash, 0)
  65         self.lastblockheight = 429
  66         self.lastblocktime = int(time.time()) + 429
  67
  68         print ("Test 1: NULLDUMMY compliant base transactions should be accepted to mempool and mined before activation [430]")
  69         test1txs = [self.create_transaction(self.nodes[0], coinbase_txid[0], self.ms_address, 49)]
  70         txid1 = self.tx_submit(self.nodes[0], test1txs[0])
  71         test1txs.append(self.create_transaction(self.nodes[0], txid1, self.ms_address, 48))
  72         txid2 = self.tx_submit(self.nodes[0], test1txs[1])
  73         test1txs.append(self.create_transaction(self.nodes[0], coinbase_txid[1], self.wit_ms_address, 49))
  74         txid3 = self.tx_submit(self.nodes[0], test1txs[2])
  75         self.block_submit(self.nodes[0], test1txs, False, True)
  76
  77         print ("Test 2: Non-NULLDUMMY base multisig transaction should not be accepted to mempool before activation")
  78         test2tx = self.create_transaction(self.nodes[0], txid2, self.ms_address, 48)
  79         trueDummy(test2tx)
  80         txid4 = self.tx_submit(self.nodes[0], test2tx, NULLDUMMY_ERROR)
  81
  82         print ("Test 3: Non-NULLDUMMY base transactions should be accepted in a block before activation [431]")
  83         self.block_submit(self.nodes[0], [test2tx], False, True)
  84
  85         print ("Test 4: Non-NULLDUMMY base multisig transaction is invalid after activation")
  86         test4tx = self.create_transaction(self.nodes[0], txid4, self.address, 47)
  87         test6txs=[CTransaction(test4tx)]
  88         trueDummy(test4tx)
  89         self.tx_submit(self.nodes[0], test4tx, NULLDUMMY_ERROR)
  90         self.block_submit(self.nodes[0], [test4tx])
  91
  92         print ("Test 5: Non-NULLDUMMY P2WSH multisig transaction invalid after activation")
  93         test5tx = self.create_transaction(self.nodes[0], txid3, self.wit_address, 48)
  94         test6txs.append(CTransaction(test5tx))
  95         test5tx.wit.vtxinwit[0].scriptWitness.stack[0] = b'\x01'
  96         self.tx_submit(self.nodes[0], test5tx, NULLDUMMY_ERROR)
  97         self.block_submit(self.nodes[0], [test5tx], True)
  98
  99         print ("Test 6: NULLDUMMY compliant base/witness transactions should be accepted to mempool and in block after activation [432]")
 100         for i in test6txs:
 101             self.tx_submit(self.nodes[0], i)
 102         self.block_submit(self.nodes[0], test6txs, True, True)
 103
 104
 105     def create_transaction(self, node, txid, to_address, amount):
 106         inputs = [{ "txid" : txid, "vout" : 0}]
 107         outputs = { to_address : amount }
 108         rawtx = node.createrawtransaction(inputs, outputs)
 109         signresult = node.signrawtransaction(rawtx)
 110         tx = CTransaction()
 111         f = BytesIO(hex_str_to_bytes(signresult['hex']))
 112         tx.deserialize(f)
 113         return tx
 114
 115
 116     def tx_submit(self, node, tx, msg = ""):
 117         tx.rehash()
 118         try:
 119             node.sendrawtransaction(bytes_to_hex_str(tx.serialize_with_witness()), True)
 120         except JSONRPCException as exp:
 121             assert_equal(exp.error["message"], msg)
 122         else:
 123             assert_equal('', msg)
 124         return tx.hash
 125
 126
 127     def block_submit(self, node, txs, witness = False, accept = False):
 128         block = create_block(self.tip, create_coinbase(self.lastblockheight + 1), self.lastblocktime + 1)
 129         block.nVersion = 4
 130         for tx in txs:
 131             tx.rehash()
 132             block.vtx.append(tx)
 133         block.hashMerkleRoot = block.calc_merkle_root()
 134         witness and add_witness_commitment(block)
 135         block.rehash()
 136         block.solve()
 137         node.submitblock(bytes_to_hex_str(block.serialize(True)))
 138         if (accept):
 139             assert_equal(node.getbestblockhash(), block.hash)
 140             self.tip = block.sha256
 141             self.lastblockhash = block.hash
 142             self.lastblocktime += 1
 143             self.lastblockheight += 1
 144         else:
 145             assert_equal(node.getbestblockhash(), self.lastblockhash)
 146
 147 if __name__ == '__main__':
 148     NULLDUMMYTest().main()