test/functional/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 """Test NULLDUMMY softfork.
   6
   7 Connect to a single node.
   8 Generate 2 blocks (save the coinbases for later).
   9 Generate 427 more blocks.
  10 [Policy/Consensus] Check that NULLDUMMY compliant transactions are accepted in the 430th block.
  11 [Policy] Check that non-NULLDUMMY transactions are rejected before activation.
  12 [Consensus] Check that the new NULLDUMMY rules are not enforced on the 431st block.
  13 [Policy/Consensus] Check that the new NULLDUMMY rules are enforced on the 432nd block.
  14 """
  15
  16 from test_framework.test_framework import BitcoinTestFramework
  17 from test_framework.util import *
  18 from test_framework.mininode import CTransaction, network_thread_start
  19 from test_framework.blocktools import create_coinbase, create_block, add_witness_commitment
  20 from test_framework.script import CScript
  21 from io import BytesIO
  22 import time
  23
  24 NULLDUMMY_ERROR = "64: non-mandatory-script-verify-flag (Dummy CHECKMULTISIG argument must be zero)"
  25
  26 def trueDummy(tx):
  27     scriptSig = CScript(tx.vin[0].scriptSig)
  28     newscript = []
  29     for i in scriptSig:
  30         if (len(newscript) == 0):
  31             assert(len(i) == 0)
  32             newscript.append(b'\x51')
  33         else:
  34             newscript.append(i)
  35     tx.vin[0].scriptSig = CScript(newscript)
  36     tx.rehash()
  37
  38 class NULLDUMMYTest(BitcoinTestFramework):
  39
  40     def set_test_params(self):
  41         self.num_nodes = 1
  42         self.setup_clean_chain = True
  43         # This script tests NULLDUMMY activation, which is part of the 'segwit' deployment, so we go through
  44         # normal segwit activation here (and don't use the default always-on behaviour).
  45         self.extra_args = [['-whitelist=127.0.0.1', '-walletprematurewitness', '-vbparams=segwit:0:999999999999']]
  46
  47     def run_test(self):
  48         self.address = self.nodes[0].getnewaddress()
  49         self.ms_address = self.nodes[0].addmultisigaddress(1,[self.address])
  50         self.wit_address = self.nodes[0].addwitnessaddress(self.address)
  51         self.wit_ms_address = self.nodes[0].addwitnessaddress(self.ms_address)
  52
  53         network_thread_start()
  54         self.coinbase_blocks = self.nodes[0].generate(2) # Block 2
  55         coinbase_txid = []
  56         for i in self.coinbase_blocks:
  57             coinbase_txid.append(self.nodes[0].getblock(i)['tx'][0])
  58         self.nodes[0].generate(427) # Block 429
  59         self.lastblockhash = self.nodes[0].getbestblockhash()
  60         self.tip = int("0x" + self.lastblockhash, 0)
  61         self.lastblockheight = 429
  62         self.lastblocktime = int(time.time()) + 429
  63
  64         self.log.info("Test 1: NULLDUMMY compliant base transactions should be accepted to mempool and mined before activation [430]")
  65         test1txs = [self.create_transaction(self.nodes[0], coinbase_txid[0], self.ms_address, 49)]
  66         txid1 = self.nodes[0].sendrawtransaction(bytes_to_hex_str(test1txs[0].serialize_with_witness()), True)
  67         test1txs.append(self.create_transaction(self.nodes[0], txid1, self.ms_address, 48))
  68         txid2 = self.nodes[0].sendrawtransaction(bytes_to_hex_str(test1txs[1].serialize_with_witness()), True)
  69         test1txs.append(self.create_transaction(self.nodes[0], coinbase_txid[1], self.wit_ms_address, 49))
  70         txid3 = self.nodes[0].sendrawtransaction(bytes_to_hex_str(test1txs[2].serialize_with_witness()), True)
  71         self.block_submit(self.nodes[0], test1txs, False, True)
  72
  73         self.log.info("Test 2: Non-NULLDUMMY base multisig transaction should not be accepted to mempool before activation")
  74         test2tx = self.create_transaction(self.nodes[0], txid2, self.ms_address, 47)
  75         trueDummy(test2tx)
  76         assert_raises_rpc_error(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, bytes_to_hex_str(test2tx.serialize_with_witness()), True)
  77
  78         self.log.info("Test 3: Non-NULLDUMMY base transactions should be accepted in a block before activation [431]")
  79         self.block_submit(self.nodes[0], [test2tx], False, True)
  80
  81         self.log.info("Test 4: Non-NULLDUMMY base multisig transaction is invalid after activation")
  82         test4tx = self.create_transaction(self.nodes[0], test2tx.hash, self.address, 46)
  83         test6txs=[CTransaction(test4tx)]
  84         trueDummy(test4tx)
  85         assert_raises_rpc_error(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, bytes_to_hex_str(test4tx.serialize_with_witness()), True)
  86         self.block_submit(self.nodes[0], [test4tx])
  87
  88         self.log.info("Test 5: Non-NULLDUMMY P2WSH multisig transaction invalid after activation")
  89         test5tx = self.create_transaction(self.nodes[0], txid3, self.wit_address, 48)
  90         test6txs.append(CTransaction(test5tx))
  91         test5tx.wit.vtxinwit[0].scriptWitness.stack[0] = b'\x01'
  92         assert_raises_rpc_error(-26, NULLDUMMY_ERROR, self.nodes[0].sendrawtransaction, bytes_to_hex_str(test5tx.serialize_with_witness()), True)
  93         self.block_submit(self.nodes[0], [test5tx], True)
  94
  95         self.log.info("Test 6: NULLDUMMY compliant base/witness transactions should be accepted to mempool and in block after activation [432]")
  96         for i in test6txs:
  97             self.nodes[0].sendrawtransaction(bytes_to_hex_str(i.serialize_with_witness()), True)
  98         self.block_submit(self.nodes[0], test6txs, True, True)
  99
 100
 101     def create_transaction(self, node, txid, to_address, amount):
 102         inputs = [{ "txid" : txid, "vout" : 0}]
 103         outputs = { to_address : amount }
 104         rawtx = node.createrawtransaction(inputs, outputs)
 105         signresult = node.signrawtransaction(rawtx)
 106         tx = CTransaction()
 107         f = BytesIO(hex_str_to_bytes(signresult['hex']))
 108         tx.deserialize(f)
 109         return tx
 110
 111
 112     def block_submit(self, node, txs, witness = False, accept = False):
 113         block = create_block(self.tip, create_coinbase(self.lastblockheight + 1), self.lastblocktime + 1)
 114         block.nVersion = 4
 115         for tx in txs:
 116             tx.rehash()
 117             block.vtx.append(tx)
 118         block.hashMerkleRoot = block.calc_merkle_root()
 119         witness and add_witness_commitment(block)
 120         block.rehash()
 121         block.solve()
 122         node.submitblock(bytes_to_hex_str(block.serialize(True)))
 123         if (accept):
 124             assert_equal(node.getbestblockhash(), block.hash)
 125             self.tip = block.sha256
 126             self.lastblockhash = block.hash
 127             self.lastblocktime += 1
 128             self.lastblockheight += 1
 129         else:
 130             assert_equal(node.getbestblockhash(), self.lastblockhash)
 131
 132 if __name__ == '__main__':
 133     NULLDUMMYTest().main()