mirror of
https://github.com/dashpay/dash.git
synced 2024-12-30 22:35:51 +01:00
20e1f4a8ef
44bbceeef1 [Tests] Cleanup feature_block.py, remove unnecessary PreviousSpendableOutput object (Conor Scott) 736f941424 [Tests] Cleanup extra instances of create_transaction (Conor Scott) 157651855f [Tests] Rename create_tx and move to blocktools.py (Conor Scott) Pull request description: There currently exist seven ([1](https://github.com/bitcoin/bitcoin/blob/master/test/functional/feature_cltv.py#L52-L60), [2](https://github.com/bitcoin/bitcoin/blob/master/test/functional/feature_csv_activation.py#L88-L95) [3](https://github.com/bitcoin/bitcoin/blob/master/test/functional/feature_dersig.py#L40-L48), [4](https://github.com/bitcoin/bitcoin/blob/master/test/functional/feature_nulldummy.py#L100-L108), [5](https://github.com/bitcoin/bitcoin/blob/master/test/functional/test_framework/util.py#L529-L535), [6](https://github.com/bitcoin/bitcoin/blob/master/test/functional/test_framework/blocktools.py#L120-L129), [7](https://github.com/bitcoin/bitcoin/blob/master/test/functional/feature_block.py#L1218-L1220)) implementations of a function called something similar to `create_transaction` in the functional tests, some of which are exact copies of each other. This PR aims to clean this up into [three different cases implemented in blocktools.py](https://github.com/conscott/bitcoin/blob/create_tx_cleanup/test/functional/test_framework/blocktools.py#L121-L149) 1. `create_tx_with_script`: Return transaction object spending generic tx output optionally specifying scriptSig and scriptPubKey 2. `create_transaction`: Return transaction object spending coinbase tx 2. `create_raw_transaction`: Return raw transaction (hex string) spending coinbase tx I am not committed to any of these function names, so I'll gladly take suggestions on there. Additionally there are some related cleanups to feature_block.py tests, specifically removing the [PreviousSpendableOutput](https://github.com/conscott/bitcoin/blob/master/test/functional/feature_block.py#L51-L54) object, which seems like an unnecessary layer given that every instance spends the 0 output. Tree-SHA512: 63c6233b6f0942c81ba1ca67ea6770809b8c9409314c6d4cf8e5a3991cb9ee92b22bebe88c0dde45cd71e754eb351230c4c404b70ff118f5f43c034452ada65c
193 lines
6.6 KiB
Python
193 lines
6.6 KiB
Python
#!/usr/bin/env python3
|
|
# 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.
|
|
"""Utilities for manipulating blocks and transactions."""
|
|
|
|
from .messages import (
|
|
CBlock,
|
|
CCbTx,
|
|
COIN,
|
|
COutPoint,
|
|
CTransaction,
|
|
CTxIn,
|
|
CTxOut,
|
|
ser_string,
|
|
)
|
|
from .script import CScript, OP_TRUE, OP_CHECKSIG
|
|
from .util import assert_equal, hex_str_to_bytes
|
|
from io import BytesIO
|
|
|
|
def create_block(hashprev, coinbase, ntime=None):
|
|
"""Create a block (with regtest difficulty)."""
|
|
block = CBlock()
|
|
if ntime is None:
|
|
import time
|
|
block.nTime = int(time.time() + 600)
|
|
else:
|
|
block.nTime = ntime
|
|
block.hashPrevBlock = hashprev
|
|
block.nBits = 0x207fffff # difficulty retargeting is disabled in REGTEST chainparams
|
|
block.vtx.append(coinbase)
|
|
block.hashMerkleRoot = block.calc_merkle_root()
|
|
block.calc_sha256()
|
|
return block
|
|
|
|
def serialize_script_num(value):
|
|
r = bytearray(0)
|
|
if value == 0:
|
|
return r
|
|
neg = value < 0
|
|
absvalue = -value if neg else value
|
|
while (absvalue):
|
|
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, dip4_activated=False):
|
|
"""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."""
|
|
coinbase = CTransaction()
|
|
coinbase.vin.append(CTxIn(COutPoint(0, 0xffffffff),
|
|
ser_string(serialize_script_num(height)), 0xffffffff))
|
|
coinbaseoutput = CTxOut()
|
|
coinbaseoutput.nValue = 500 * COIN
|
|
halvings = int(height / 150) # regtest
|
|
coinbaseoutput.nValue >>= halvings
|
|
if (pubkey is not None):
|
|
coinbaseoutput.scriptPubKey = CScript([pubkey, OP_CHECKSIG])
|
|
else:
|
|
coinbaseoutput.scriptPubKey = CScript([OP_TRUE])
|
|
coinbase.vout = [coinbaseoutput]
|
|
if dip4_activated:
|
|
coinbase.nVersion = 3
|
|
coinbase.nType = 5
|
|
cbtx_payload = CCbTx(2, height, 0, 0)
|
|
coinbase.vExtraPayload = cbtx_payload.serialize()
|
|
coinbase.calc_sha256()
|
|
return coinbase
|
|
|
|
def create_tx_with_script(prevtx, n, script_sig=b"", amount=1, script_pub_key=CScript()):
|
|
"""Return one-input, one-output transaction object
|
|
spending the prevtx's n-th output with the given amount.
|
|
|
|
Can optionally pass scriptPubKey and scriptSig, default is anyone-can-spend ouput.
|
|
"""
|
|
tx = CTransaction()
|
|
assert(n < len(prevtx.vout))
|
|
tx.vin.append(CTxIn(COutPoint(prevtx.sha256, n), script_sig, 0xffffffff))
|
|
tx.vout.append(CTxOut(amount, script_pub_key))
|
|
tx.calc_sha256()
|
|
return tx
|
|
|
|
def create_transaction(node, txid, to_address, amount):
|
|
""" Return signed transaction spending the first output of the
|
|
input txid. Note that the node must be able to sign for the
|
|
output that is being spent, and the node must not be running
|
|
multiple wallets.
|
|
"""
|
|
raw_tx = create_raw_transaction(node, txid, to_address, amount)
|
|
tx = CTransaction()
|
|
tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx)))
|
|
return tx
|
|
|
|
def create_raw_transaction(node, txid, to_address, amount):
|
|
""" Return raw signed transaction spending the first output of the
|
|
input txid. Note that the node must be able to sign for the
|
|
output that is being spent, and the node must not be running
|
|
multiple wallets.
|
|
"""
|
|
inputs = [{"txid": txid, "vout": 0}]
|
|
outputs = {to_address: amount}
|
|
rawtx = node.createrawtransaction(inputs, outputs)
|
|
signresult = node.signrawtransactionwithwallet(rawtx)
|
|
assert_equal(signresult["complete"], True)
|
|
return signresult['hex']
|
|
|
|
def get_legacy_sigopcount_block(block, accurate=True):
|
|
count = 0
|
|
for tx in block.vtx:
|
|
count += get_legacy_sigopcount_tx(tx, accurate)
|
|
return count
|
|
|
|
def get_legacy_sigopcount_tx(tx, accurate=True):
|
|
count = 0
|
|
for i in tx.vout:
|
|
count += i.scriptPubKey.GetSigOpCount(accurate)
|
|
for j in tx.vin:
|
|
# scriptSig might be of type bytes, so convert to CScript for the moment
|
|
count += CScript(j.scriptSig).GetSigOpCount(accurate)
|
|
return count
|
|
|
|
# Identical to GetMasternodePayment in C++ code
|
|
def get_masternode_payment(nHeight, blockValue, nReallocActivationHeight):
|
|
ret = int(blockValue / 5)
|
|
|
|
nMNPIBlock = 350
|
|
nMNPIPeriod = 10
|
|
|
|
if nHeight > nMNPIBlock:
|
|
ret += int(blockValue / 20)
|
|
if nHeight > nMNPIBlock+(nMNPIPeriod* 1):
|
|
ret += int(blockValue / 20)
|
|
if nHeight > nMNPIBlock+(nMNPIPeriod* 2):
|
|
ret += int(blockValue / 20)
|
|
if nHeight > nMNPIBlock+(nMNPIPeriod* 3):
|
|
ret += int(blockValue / 40)
|
|
if nHeight > nMNPIBlock+(nMNPIPeriod* 4):
|
|
ret += int(blockValue / 40)
|
|
if nHeight > nMNPIBlock+(nMNPIPeriod* 5):
|
|
ret += int(blockValue / 40)
|
|
if nHeight > nMNPIBlock+(nMNPIPeriod* 6):
|
|
ret += int(blockValue / 40)
|
|
if nHeight > nMNPIBlock+(nMNPIPeriod* 7):
|
|
ret += int(blockValue / 40)
|
|
if nHeight > nMNPIBlock+(nMNPIPeriod* 9):
|
|
ret += int(blockValue / 40)
|
|
|
|
if nHeight < nReallocActivationHeight:
|
|
# Block Reward Realocation is not activated yet, nothing to do
|
|
return ret
|
|
|
|
nSuperblockCycle = 10
|
|
# Actual realocation starts in the cycle next to one activation happens in
|
|
nReallocStart = nReallocActivationHeight - nReallocActivationHeight % nSuperblockCycle + nSuperblockCycle
|
|
|
|
if nHeight < nReallocStart:
|
|
# Activated but we have to wait for the next cycle to start realocation, nothing to do
|
|
return ret
|
|
|
|
# Periods used to reallocate the masternode reward from 50% to 60%
|
|
vecPeriods = [
|
|
513, # Period 1: 51.3%
|
|
526, # Period 2: 52.6%
|
|
533, # Period 3: 53.3%
|
|
540, # Period 4: 54%
|
|
546, # Period 5: 54.6%
|
|
552, # Period 6: 55.2%
|
|
557, # Period 7: 55.7%
|
|
562, # Period 8: 56.2%
|
|
567, # Period 9: 56.7%
|
|
572, # Period 10: 57.2%
|
|
577, # Period 11: 57.7%
|
|
582, # Period 12: 58.2%
|
|
585, # Period 13: 58.5%
|
|
588, # Period 14: 58.8%
|
|
591, # Period 15: 59.1%
|
|
594, # Period 16: 59.4%
|
|
597, # Period 17: 59.7%
|
|
599, # Period 18: 59.9%
|
|
600 # Period 19: 60%
|
|
]
|
|
|
|
nReallocCycle = nSuperblockCycle * 3
|
|
nCurrentPeriod = min(int((nHeight - nReallocStart) / nReallocCycle), len(vecPeriods) - 1)
|
|
|
|
return int(blockValue * vecPeriods[nCurrentPeriod] / 1000)
|