diff options
Diffstat (limited to 'qa/rpc-tests/test_framework/blocktools.py')
| -rw-r--r-- | qa/rpc-tests/test_framework/blocktools.py | 80 |
1 files changed, 61 insertions, 19 deletions
diff --git a/qa/rpc-tests/test_framework/blocktools.py b/qa/rpc-tests/test_framework/blocktools.py index f397fe7cd..47a68f435 100644 --- a/qa/rpc-tests/test_framework/blocktools.py +++ b/qa/rpc-tests/test_framework/blocktools.py @@ -1,15 +1,17 @@ +#!/usr/bin/env python3 # blocktools.py - utilities for manipulating blocks and transactions -# -# Distributed under the MIT/X11 software license, see the accompanying +# Copyright (c) 2015-2016 The Bitcoin Core developers +# Distributed under the MIT software license, see the accompanying # file COPYING or http://www.opensource.org/licenses/mit-license.php. -# -from mininode import * -from script import CScript, CScriptOp +from .mininode import * +from .script import CScript, OP_TRUE, OP_CHECKSIG, OP_RETURN # Create a block (with regtest difficulty) def create_block(hashprev, coinbase, nTime=None): block = CBlock() + # Dogecoin: Create a non-AuxPoW block but include chain ID + block.nVersion = 0x620003 if nTime is None: import time block.nTime = int(time.time()+600) @@ -22,6 +24,29 @@ def create_block(hashprev, coinbase, nTime=None): block.calc_sha256() return block +# From BIP141 +WITNESS_COMMITMENT_HEADER = b"\xaa\x21\xa9\xed" + +# According to BIP141, blocks with witness rules active must commit to the +# hash of all in-block transactions including witness. +def add_witness_commitment(block, nonce=0): + # First calculate the merkle root of the block's + # transactions, with witnesses. + witness_nonce = nonce + witness_root = block.calc_witness_merkle_root() + witness_commitment = uint256_from_str(hash256(ser_uint256(witness_root)+ser_uint256(witness_nonce))) + # witness_nonce should go to coinbase witness. + block.vtx[0].wit.vtxinwit = [CTxInWitness()] + block.vtx[0].wit.vtxinwit[0].scriptWitness.stack = [ser_uint256(witness_nonce)] + + # witness commitment is the last OP_RETURN output in coinbase + output_data = WITNESS_COMMITMENT_HEADER + ser_uint256(witness_commitment) + block.vtx[0].vout.append(CTxOut(0, CScript([OP_RETURN, output_data]))) + block.vtx[0].rehash() + block.hashMerkleRoot = block.calc_merkle_root() + block.rehash() + + def serialize_script_num(value): r = bytearray(0) if value == 0: @@ -29,7 +54,7 @@ def serialize_script_num(value): neg = value < 0 absvalue = -value if neg else value while (absvalue): - r.append(chr(absvalue & 0xff)) + r.append(int(absvalue & 0xff)) absvalue >>= 8 if r[-1] & 0x80: r.append(0x80 if neg else 0) @@ -37,29 +62,46 @@ def serialize_script_num(value): r[-1] |= 0x80 return r -counter=1 -# Create an anyone-can-spend coinbase transaction, assuming no miner fees -def create_coinbase(heightAdjust = 0): - global counter +# Create a coinbase transaction, assuming no miner fees. +# If pubkey is passed in, the coinbase output will be a P2PK output; +# otherwise an anyone-can-spend output. +def create_coinbase(height, pubkey = None): coinbase = CTransaction() coinbase.vin.append(CTxIn(COutPoint(0, 0xffffffff), - ser_string(serialize_script_num(counter+heightAdjust)), 0xffffffff)) - counter += 1 + ser_string(serialize_script_num(height)), 0xffffffff)) coinbaseoutput = CTxOut() - coinbaseoutput.nValue = 50*100000000 - halvings = int((counter+heightAdjust)/150) # regtest + coinbaseoutput.nValue = 500000 * COIN + halvings = int(height/150) # regtest coinbaseoutput.nValue >>= halvings - coinbaseoutput.scriptPubKey = "" + if (pubkey != None): + coinbaseoutput.scriptPubKey = CScript([pubkey, OP_CHECKSIG]) + else: + coinbaseoutput.scriptPubKey = CScript([OP_TRUE]) coinbase.vout = [ coinbaseoutput ] coinbase.calc_sha256() return coinbase -# Create a transaction with an anyone-can-spend output, that spends the -# nth output of prevtx. -def create_transaction(prevtx, n, sig, value): +# Create a transaction. +# If the scriptPubKey is not specified, make it anyone-can-spend. +def create_transaction(prevtx, n, sig, value, scriptPubKey=CScript()): tx = CTransaction() assert(n < len(prevtx.vout)) tx.vin.append(CTxIn(COutPoint(prevtx.sha256, n), sig, 0xffffffff)) - tx.vout.append(CTxOut(value, "")) + tx.vout.append(CTxOut(value, scriptPubKey)) tx.calc_sha256() return tx + +def get_legacy_sigopcount_block(block, fAccurate=True): + count = 0 + for tx in block.vtx: + count += get_legacy_sigopcount_tx(tx, fAccurate) + return count + +def get_legacy_sigopcount_tx(tx, fAccurate=True): + count = 0 + for i in tx.vout: + count += i.scriptPubKey.GetSigOpCount(fAccurate) + for j in tx.vin: + # scriptSig might be of type bytes, so convert to CScript for the moment + count += CScript(j.scriptSig).GetSigOpCount(fAccurate) + return count |