Differential D7901 Diff 24586 test/functional/test_framework/blocktools.py

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test/functional/test_framework/blocktools.py

	#!/usr/bin/env python3			#!/usr/bin/env python3
	# Copyright (c) 2015-2019 The Bitcoin Core developers			# Copyright (c) 2015-2019 The Bitcoin Core developers
	# Distributed under the MIT software license, see the accompanying			# Distributed under the MIT software license, see the accompanying
	# file COPYING or http://www.opensource.org/licenses/mit-license.php.			# file COPYING or http://www.opensource.org/licenses/mit-license.php.
	"""Utilities for manipulating blocks and transactions."""			"""Utilities for manipulating blocks and transactions."""

	from .script import (			from .script import (
	CScript,			CScript,
				CScriptNum,
				CScriptOp,
				OP_1,
	OP_CHECKSIG,			OP_CHECKSIG,
	OP_DUP,			OP_DUP,
	OP_EQUALVERIFY,			OP_EQUALVERIFY,
	OP_HASH160,			OP_HASH160,
	OP_RETURN,			OP_RETURN,
	OP_TRUE,			OP_TRUE,
	)			)
	from .messages import (			from .messages import (
	CBlock,			CBlock,
	COIN,			COIN,
	COutPoint,			COutPoint,
	CTransaction,			CTransaction,
	CTxIn,			CTxIn,
	CTxOut,			CTxOut,
	FromHex,			FromHex,
	ToHex,			ToHex,
	ser_string,
	)			)
	from .txtools import pad_tx			from .txtools import pad_tx
	from .util import assert_equal, satoshi_round			from .util import assert_equal, satoshi_round

	# Genesis block time (regtest)			# Genesis block time (regtest)
	TIME_GENESIS_BLOCK = 1296688602			TIME_GENESIS_BLOCK = 1296688602


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	def make_conform_to_ctor(block):			def make_conform_to_ctor(block):
	for tx in block.vtx:			for tx in block.vtx:
	tx.rehash()			tx.rehash()
	block.vtx = [block.vtx[0]] + \			block.vtx = [block.vtx[0]] + \
	sorted(block.vtx[1:], key=lambda tx: tx.get_id())			sorted(block.vtx[1:], key=lambda tx: tx.get_id())


	def serialize_script_num(value):			def script_BIP34_coinbase_height(height):
	r = bytearray(0)			if height <= 16:
	if value == 0:			res = CScriptOp.encode_op_n(height)
	return r			# Append dummy to increase scriptSig size above 2
	neg = value < 0			# (see bad-cb-length consensus rule)
	absvalue = -value if neg else value			return CScript([res, OP_1])
				deadalnixUnsubmitted Not Done Inline Actions You can use OP_TRUE here. deadalnix: You can use OP_TRUE here.
	while (absvalue):			return CScript([CScriptNum(height)])
	r.append(int(absvalue & 0xff))
	absvalue >>= 8
	if r[-1] & 0x80:
	r.append(0x80 if neg else 0)
	elif neg:
	r[-1] \|= 0x80
	return r


	def create_coinbase(height, pubkey=None):			def create_coinbase(height, pubkey=None):
	"""Create a coinbase transaction, assuming no miner fees.			"""Create a coinbase transaction, assuming no miner fees.

	If pubkey is passed in, the coinbase output will be a P2PK output;			If pubkey is passed in, the coinbase output will be a P2PK output;
	otherwise an anyone-can-spend output."""			otherwise an anyone-can-spend output."""
	coinbase = CTransaction()			coinbase = CTransaction()
	coinbase.vin.append(CTxIn(COutPoint(0, 0xffffffff),			coinbase.vin.append(CTxIn(COutPoint(0, 0xffffffff),
	ser_string(serialize_script_num(height)), 0xffffffff))			script_BIP34_coinbase_height(height),
				0xffffffff))
	coinbaseoutput = CTxOut()			coinbaseoutput = CTxOut()
	coinbaseoutput.nValue = 50 * COIN			coinbaseoutput.nValue = 50 * COIN
	halvings = int(height / 150) # regtest			halvings = int(height / 150) # regtest
	coinbaseoutput.nValue >>= halvings			coinbaseoutput.nValue >>= halvings
	if (pubkey is not None):			if (pubkey is not None):
	coinbaseoutput.scriptPubKey = CScript([pubkey, OP_CHECKSIG])			coinbaseoutput.scriptPubKey = CScript([pubkey, OP_CHECKSIG])
	else:			else:
	coinbaseoutput.scriptPubKey = CScript([OP_TRUE])			coinbaseoutput.scriptPubKey = CScript([OP_TRUE])
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