Hush Full Node software. We were censored from Github, this is where all development happens now. https://hush.is
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# Copyright (c) 2016-2020 The Hush developers
# Distributed under the GPLv3 software license, see the accompanying
# file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
import binascii
import calendar
import json
import plyvel
import progressbar
import os
import stat
import subprocess
import sys
import tarfile
import time
HUSH_CLI = './src/hush-cli'
USAGE = """
Requirements:
- find
- xz
- %s (edit HUSH_CLI in this script to alter the path)
- A running mainnet hushd using the default datadir with -txindex=1
Example usage:
make -C src/leveldb/
virtualenv venv
. venv/bin/activate
pip install --global-option=build_ext --global-option="-L$(pwd)/src/leveldb/" --global-option="-I$(pwd)/src/leveldb/include/" plyvel
pip install progressbar2
LD_LIBRARY_PATH=src/leveldb python qa/hush/create_benchmark_archive.py
""" % HUSH_CLI
def check_deps():
if subprocess.call(['which', 'find', 'xz', HUSH_CLI], stdout=subprocess.PIPE):
print USAGE
sys.exit()
def encode_varint(n):
v = bytearray()
l = 0
while True:
v.append((n & 0x7F) | (0x80 if l else 0x00))
if (n <= 0x7F):
break
n = (n >> 7) - 1
l += 1
return bytes(v)[::-1]
def decode_varint(v):
n = 0
for ch in range(len(v)):
n = (n << 7) | (ord(v[ch]) & 0x7F)
if (ord(v[ch]) & 0x80):
n += 1
else:
return n
def compress_amount(n):
if n == 0:
return 0
e = 0
while (((n % 10) == 0) and e < 9):
n /= 10
e += 1
if e < 9:
d = (n % 10)
assert(d >= 1 and d <= 9)
n /= 10
return 1 + (n*9 + d - 1)*10 + e
else:
return 1 + (n - 1)*10 + 9
OP_DUP = 0x76
OP_EQUAL = 0x87
OP_EQUALVERIFY = 0x88
OP_HASH160 = 0xa9
OP_CHECKSIG = 0xac
def to_key_id(script):
if len(script) == 25 and \
script[0] == OP_DUP and \
script[1] == OP_HASH160 and \
script[2] == 20 and \
script[23] == OP_EQUALVERIFY and \
script[24] == OP_CHECKSIG:
return script[3:23]
return bytes()
def to_script_id(script):
if len(script) == 23 and \
script[0] == OP_HASH160 and \
script[1] == 20 and \
script[22] == OP_EQUAL:
return script[2:22]
return bytes()
def to_pubkey(script):
if len(script) == 35 and \
script[0] == 33 and \
script[34] == OP_CHECKSIG and \
(script[1] == 0x02 or script[1] == 0x03):
return script[1:34]
if len(script) == 67 and \
script[0] == 65 and \
script[66] == OP_CHECKSIG and \
script[1] == 0x04:
return script[1:66] # assuming is fully valid
return bytes()
def compress_script(script):
result = bytearray()
key_id = to_key_id(script)
if key_id:
result.append(0x00)
result.extend(key_id)
return bytes(result)
script_id = to_script_id(script)
if script_id:
result.append(0x01)
result.extend(script_id)
return bytes(result)
pubkey = to_pubkey(script)
if pubkey:
result.append(0x00)
result.extend(pubkey[1:33])
if pubkey[0] == 0x02 or pubkey[0] == 0x03:
result[0] = pubkey[0]
return bytes(result)
elif pubkey[0] == 0x04:
result[0] = 0x04 | (pubkey[64] & 0x01)
return bytes(result)
size = len(script) + 6
result.append(encode_varint(size))
result.extend(script)
return bytes(result)
def deterministic_filter(tarinfo):
tarinfo.uid = tarinfo.gid = 0
tarinfo.uname = tarinfo.gname = "root"
tarinfo.mtime = calendar.timegm(time.strptime('2017-05-17', '%Y-%m-%d'))
tarinfo.mode |= stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP
tarinfo.mode &= ~stat.S_IWGRP
if tarinfo.isdir():
tarinfo.mode |= \
stat.S_IXUSR | \
stat.S_IXGRP | \
stat.S_IXOTH
else:
tarinfo.mode &= \
~stat.S_IXUSR & \
~stat.S_IXGRP & \
~stat.S_IXOTH
return tarinfo
def create_benchmark_archive(blk_hash):
blk = json.loads(subprocess.check_output([HUSH_CLI, 'getblock', blk_hash]))
print 'Height: %d' % blk['height']
print 'Transactions: %d' % len(blk['tx'])
os.mkdir('benchmark')
with open('benchmark/block-%d.dat' % blk['height'], 'wb') as f:
f.write(binascii.unhexlify(subprocess.check_output([HUSH_CLI, 'getblock', blk_hash, 'false']).strip()))
txs = [json.loads(subprocess.check_output([HUSH_CLI, 'getrawtransaction', tx, '1'])
) for tx in blk['tx']]
js_txs = len([tx for tx in txs if len(tx['vjoinsplit']) > 0])
if js_txs:
print 'Block contains %d JoinSplit-containing transactions' % js_txs
return
inputs = [(x['txid'], x['vout']) for tx in txs for x in tx['vin'] if x.has_key('txid')]
print 'Total inputs: %d' % len(inputs)
unique_inputs = {}
for i in sorted(inputs):
if unique_inputs.has_key(i[0]):
unique_inputs[i[0]].append(i[1])
else:
unique_inputs[i[0]] = [i[1]]
print 'Unique input transactions: %d' % len(unique_inputs)
db_path = 'benchmark/block-%d-inputs' % blk['height']
db = plyvel.DB(db_path, create_if_missing=True)
wb = db.write_batch()
bar = progressbar.ProgressBar(redirect_stdout=True)
print 'Collecting input coins for block'
for tx in bar(unique_inputs.keys()):
rawtx = json.loads(subprocess.check_output([HUSH_CLI, 'getrawtransaction', tx, '1']))
mask_size = 0
mask_code = 0
b = 0
while 2+b*8 < len(rawtx['vout']):
zero = True
i = 0
while i < 8 and 2+b*8+i < len(rawtx['vout']):
if 2+b*8+i in unique_inputs[tx]:
zero = False
i += 1
if not zero:
mask_size = b + 1
mask_code += 1
b += 1
coinbase = len(rawtx['vin']) == 1 and 'coinbase' in rawtx['vin'][0]
first = len(rawtx['vout']) > 0 and 0 in unique_inputs[tx]
second = len(rawtx['vout']) > 1 and 1 in unique_inputs[tx]
code = 8*(mask_code - (0 if first or second else 1)) + \
(1 if coinbase else 0) + \
(2 if first else 0) + \
(4 if second else 0)
coins = bytearray()
# Serialized format:
# - VARINT(nVersion)
coins.extend(encode_varint(rawtx['version']))
# - VARINT(nCode)
coins.extend(encode_varint(code))
# - unspentness bitvector, for vout[2] and further; least significant byte first
for b in range(mask_size):
avail = 0
i = 0
while i < 8 and 2+b*8+i < len(rawtx['vout']):
if 2+b*8+i in unique_inputs[tx]:
avail |= (1 << i)
i += 1
coins.append(avail)
# - the non-spent CTxOuts (via CTxOutCompressor)
for i in range(len(rawtx['vout'])):
if i in unique_inputs[tx]:
coins.extend(encode_varint(compress_amount(int(rawtx['vout'][i]['valueZat']))))
coins.extend(compress_script(
binascii.unhexlify(rawtx['vout'][i]['scriptPubKey']['hex'])))
# - VARINT(nHeight)
coins.extend(encode_varint(json.loads(
subprocess.check_output([HUSH_CLI, 'getblockheader', rawtx['blockhash']])
)['height']))
db_key = b'c' + bytes(binascii.unhexlify(tx)[::-1])
db_val = bytes(coins)
wb.put(db_key, db_val)
wb.write()
db.close()
# Make reproducible archive
os.remove('%s/LOG' % db_path)
files = subprocess.check_output(['find', 'benchmark']).strip().split('\n')
archive_name = 'block-%d.tar' % blk['height']
tar = tarfile.open(archive_name, 'w')
for name in sorted(files):
tar.add(name, recursive=False, filter=deterministic_filter)
tar.close()
subprocess.check_call(['xz', '-6', archive_name])
print 'Created archive %s.xz' % archive_name
subprocess.call(['rm', '-r', 'benchmark'])
if __name__ == '__main__':
check_deps()
create_benchmark_archive('0000000007cdb809e48e51dd0b530e8f5073e0a9e9bd7ae920fe23e874658c74')