def scrypt(data):
return pack.IntType(256).unpack(
__import__('scryptSquared').getPoWHash(data))
def generate_transaction(cls,
tracker,
share_data,
block_target,
desired_timestamp,
desired_target,
ref_merkle_link,
desired_other_transaction_hashes_and_fees,
net,
known_txs=None,
last_txout_nonce=0,
base_subsidy=None,
segwit_data=None):
previous_share = tracker.items[
share_data['previous_share_hash']] if share_data[
'previous_share_hash'] is not None else None
height, last = tracker.get_height_and_last(
share_data['previous_share_hash'])
assert height >= net.REAL_CHAIN_LENGTH or last is None
if height < net.TARGET_LOOKBEHIND:
pre_target3 = net.MAX_TARGET
else:
attempts_per_second = get_pool_attempts_per_second(
tracker,
share_data['previous_share_hash'],
net.TARGET_LOOKBEHIND,
min_work=True,
integer=True)
pre_target = 2**256 // (
net.SHARE_PERIOD *
attempts_per_second) - 1 if attempts_per_second else 2**256 - 1
pre_target2 = math.clip(pre_target,
(previous_share.max_target * 9 // 10,
previous_share.max_target * 11 // 10))
pre_target3 = math.clip(pre_target2,
(net.MIN_TARGET, net.MAX_TARGET))
max_bits = bitcoin_data.FloatingInteger.from_target_upper_bound(
pre_target3)
bits = bitcoin_data.FloatingInteger.from_target_upper_bound(
math.clip(desired_target, (pre_target3 // 30, pre_target3)))
new_transaction_hashes = []
new_transaction_size = 0
transaction_hash_refs = []
other_transaction_hashes = []
past_shares = list(
tracker.get_chain(share_data['previous_share_hash'],
min(height, 100)))
tx_hash_to_this = {}
for i, share in enumerate(past_shares):
for j, tx_hash in enumerate(share.new_transaction_hashes):
if tx_hash not in tx_hash_to_this:
tx_hash_to_this[tx_hash] = [1 + i,
j] # share_count, tx_count
for tx_hash, fee in desired_other_transaction_hashes_and_fees:
if tx_hash in tx_hash_to_this:
this = tx_hash_to_this[tx_hash]
else:
if known_txs is not None:
this_size = bitcoin_data.tx_type.packed_size(
known_txs[tx_hash])
if new_transaction_size + this_size > cls.MAX_NEW_TXS_SIZE: # limit the size of new txns/share
break
new_transaction_size += this_size
new_transaction_hashes.append(tx_hash)
this = [0, len(new_transaction_hashes) - 1]
transaction_hash_refs.extend(this)
other_transaction_hashes.append(tx_hash)
included_transactions = set(other_transaction_hashes)
removed_fees = [
fee for tx_hash, fee in desired_other_transaction_hashes_and_fees
if tx_hash not in included_transactions
]
definite_fees = sum(
0 if fee is None else fee
for tx_hash, fee in desired_other_transaction_hashes_and_fees
if tx_hash in included_transactions)
if None not in removed_fees:
share_data = dict(share_data,
subsidy=share_data['subsidy'] -
sum(removed_fees))
else:
assert base_subsidy is not None
share_data = dict(share_data, subsidy=base_subsidy + definite_fees)
weights, total_weight, donation_weight = tracker.get_cumulative_weights(
previous_share.share_data['previous_share_hash']
if previous_share is not None else None,
max(0,
min(height, net.REAL_CHAIN_LENGTH) - 1),
65535 * net.SPREAD *
bitcoin_data.target_to_average_attempts(block_target),
)
assert total_weight == sum(weights.itervalues()) + donation_weight, (
total_weight, sum(weights.itervalues()) + donation_weight)
amounts = dict(
(script,
share_data['subsidy'] * (199 * weight) // (200 * total_weight))
for script, weight in weights.iteritems(
)) # 99.5% goes according to weights prior to this share
this_script = bitcoin_data.pubkey_hash_to_script2(
share_data['pubkey_hash'], share_data['pubkey_hash_version'],
net.PARENT)
amounts[this_script] = amounts.get(
this_script,
0) + share_data['subsidy'] // 200 # 0.5% goes to block finder
amounts[DONATION_SCRIPT] = amounts.get(
DONATION_SCRIPT, 0
) + share_data['subsidy'] - sum(
amounts.itervalues()
) # all that's left over is the donation weight and some extra satoshis due to rounding
if sum(amounts.itervalues()) != share_data['subsidy'] or any(
x < 0 for x in amounts.itervalues()):
raise ValueError()
dests = sorted(
amounts.iterkeys(),
key=lambda script:
(script == DONATION_SCRIPT, amounts[script], script))[
-4000:] # block length limit, unlikely to ever be hit
segwit_activated = is_segwit_activated(cls.VERSION, net)
if segwit_data is None and known_txs is None:
segwit_activated = False
if not (segwit_activated or known_txs is None) and any(
bitcoin_data.is_segwit_tx(known_txs[h])
for h in other_transaction_hashes):
raise ValueError('segwit transaction included before activation')
if segwit_activated and known_txs is not None:
share_txs = [(known_txs[h], bitcoin_data.get_txid(known_txs[h]), h)
for h in other_transaction_hashes]
segwit_data = dict(
txid_merkle_link=bitcoin_data.calculate_merkle_link(
[None] + [tx[1] for tx in share_txs], 0),
wtxid_merkle_root=bitcoin_data.merkle_hash([0] + [
bitcoin_data.get_wtxid(tx[0], tx[1], tx[2])
for tx in share_txs
]))
if segwit_activated and segwit_data is not None:
witness_reserved_value_str = '[P2Pool]' * 4
witness_reserved_value = pack.IntType(256).unpack(
witness_reserved_value_str)
witness_commitment_hash = bitcoin_data.get_witness_commitment_hash(
segwit_data['wtxid_merkle_root'], witness_reserved_value)
share_info = dict(
share_data=share_data,
far_share_hash=None if last is None and height < 99 else
tracker.get_nth_parent_hash(share_data['previous_share_hash'], 99),
max_bits=max_bits,
bits=bits,
timestamp=math.clip(
desired_timestamp,
(
(previous_share.timestamp + net.SHARE_PERIOD) -
(net.SHARE_PERIOD - 1), # = previous_share.timestamp + 1
(previous_share.timestamp + net.SHARE_PERIOD) +
(net.SHARE_PERIOD - 1),
)) if previous_share is not None else desired_timestamp,
new_transaction_hashes=new_transaction_hashes,
transaction_hash_refs=transaction_hash_refs,
absheight=((previous_share.absheight
if previous_share is not None else 0) + 1) % 2**32,
abswork=(
(previous_share.abswork if previous_share is not None else 0) +
bitcoin_data.target_to_average_attempts(bits.target)) % 2**128,
)
if segwit_activated:
share_info['segwit_data'] = segwit_data
gentx = dict(
version=1,
tx_ins=[
dict(
previous_output=None,
sequence=None,
script=share_data['coinbase'],
)
],
tx_outs=([
dict(value=0,
script='\x6a\x24\xaa\x21\xa9\xed' +
pack.IntType(256).pack(witness_commitment_hash))
] if segwit_activated else []) + [
dict(value=amounts[script], script=script) for script in dests
if amounts[script] or script == DONATION_SCRIPT
] + [
dict(value=0,
script='\x6a\x28' +
cls.get_ref_hash(net, share_info, ref_merkle_link) +
pack.IntType(64).pack(last_txout_nonce))
],
lock_time=0,
)
if segwit_activated:
gentx['marker'] = 0
gentx['flag'] = 1
gentx['witness'] = [[witness_reserved_value_str]]
def get_share(header, last_txout_nonce=last_txout_nonce):
min_header = dict(header)
del min_header['merkle_root']
share = cls(
net, None,
dict(
min_header=min_header,
share_info=share_info,
ref_merkle_link=dict(branch=[], index=0),
last_txout_nonce=last_txout_nonce,
hash_link=prefix_to_hash_link(
bitcoin_data.tx_id_type.pack(gentx)[:-32 - 8 - 4],
cls.gentx_before_refhash),
merkle_link=bitcoin_data.calculate_merkle_link(
[None] + other_transaction_hashes, 0),
))
assert share.header == header # checks merkle_root
return share
return share_info, gentx, other_transaction_hashes, get_share
class BaseShare(object):
VERSION = 0
VOTING_VERSION = 0
SUCCESSOR = None
MAX_BLOCK_WEIGHT = 4000000
MAX_NEW_TXS_SIZE = 50000
small_block_header_type = pack.ComposedType([
('version', pack.VarIntType()),
('previous_block', pack.PossiblyNoneType(0, pack.IntType(256))),
('timestamp', pack.IntType(32)),
('bits', bitcoin_data.FloatingIntegerType()),
('nonce', pack.IntType(32)),
])
share_info_type = None
share_type = None
ref_type = None
gentx_before_refhash = pack.VarStrType().pack(
DONATION_SCRIPT) + pack.IntType(64).pack(0) + pack.VarStrType().pack(
'\x6a\x28' + pack.IntType(256).pack(0) +
pack.IntType(64).pack(0))[:3]
@classmethod
def get_dynamic_types(cls, net):
t = dict(share_info_type=None, share_type=None, ref_type=None)
segwit_data = (
'segwit_data',
pack.PossiblyNoneType(
dict(txid_merkle_link=dict(branch=[], index=0),
wtxid_merkle_root=2**256 - 1),
pack.ComposedType([
(
'txid_merkle_link',
pack.ComposedType([
('branch', pack.ListType(pack.IntType(256))),
('index', pack.IntType(0)), # it will always be 0
])),
('wtxid_merkle_root', pack.IntType(256))
])))
t['share_info_type'] = pack.ComposedType(
[('share_data',
pack.ComposedType([
('previous_share_hash',
pack.PossiblyNoneType(0, pack.IntType(256))),
('coinbase', pack.VarStrType()),
('nonce', pack.IntType(32)),
('pubkey_hash', pack.IntType(160)),
('pubkey_hash_version', pack.IntType(8)),
('subsidy', pack.IntType(64)),
('donation', pack.IntType(16)),
('stale_info', pack.StaleInfoEnumType()),
('desired_version', pack.VarIntType()),
]))] +
([segwit_data] if is_segwit_activated(cls.VERSION, net) else []) +
[
('new_transaction_hashes', pack.ListType(pack.IntType(256))),
('transaction_hash_refs', pack.ListType(pack.VarIntType(), 2)
), # pairs of share_count, tx_count
('far_share_hash',
pack.PossiblyNoneType(0, pack.IntType(256))),
('max_bits', bitcoin_data.FloatingIntegerType()),
('bits', bitcoin_data.FloatingIntegerType()),
('timestamp', pack.IntType(32)),
('absheight', pack.IntType(32)),
('abswork', pack.IntType(128)),
])
t['share_type'] = pack.ComposedType([
('min_header', cls.small_block_header_type),
('share_info', t['share_info_type']),
('ref_merkle_link',
pack.ComposedType([
('branch', pack.ListType(pack.IntType(256))),
('index', pack.IntType(0)),
])),
('last_txout_nonce', pack.IntType(64)),
('hash_link', hash_link_type),
(
'merkle_link',
pack.ComposedType([
('branch', pack.ListType(pack.IntType(256))),
('index', pack.IntType(0)), # it will always be 0
])),
])
t['ref_type'] = pack.ComposedType([
('identifier', pack.FixedStrType(64 // 8)),
('share_info', t['share_info_type']),
])
return t
@classmethod
def generate_transaction(cls,
tracker,
share_data,
block_target,
desired_timestamp,
desired_target,
ref_merkle_link,
desired_other_transaction_hashes_and_fees,
net,
known_txs=None,
last_txout_nonce=0,
base_subsidy=None,
segwit_data=None):
previous_share = tracker.items[
share_data['previous_share_hash']] if share_data[
'previous_share_hash'] is not None else None
height, last = tracker.get_height_and_last(
share_data['previous_share_hash'])
assert height >= net.REAL_CHAIN_LENGTH or last is None
if height < net.TARGET_LOOKBEHIND:
pre_target3 = net.MAX_TARGET
else:
attempts_per_second = get_pool_attempts_per_second(
tracker,
share_data['previous_share_hash'],
net.TARGET_LOOKBEHIND,
min_work=True,
integer=True)
pre_target = 2**256 // (
net.SHARE_PERIOD *
attempts_per_second) - 1 if attempts_per_second else 2**256 - 1
pre_target2 = math.clip(pre_target,
(previous_share.max_target * 9 // 10,
previous_share.max_target * 11 // 10))
pre_target3 = math.clip(pre_target2,
(net.MIN_TARGET, net.MAX_TARGET))
max_bits = bitcoin_data.FloatingInteger.from_target_upper_bound(
pre_target3)
bits = bitcoin_data.FloatingInteger.from_target_upper_bound(
math.clip(desired_target, (pre_target3 // 30, pre_target3)))
new_transaction_hashes = []
new_transaction_size = 0
transaction_hash_refs = []
other_transaction_hashes = []
past_shares = list(
tracker.get_chain(share_data['previous_share_hash'],
min(height, 100)))
tx_hash_to_this = {}
for i, share in enumerate(past_shares):
for j, tx_hash in enumerate(share.new_transaction_hashes):
if tx_hash not in tx_hash_to_this:
tx_hash_to_this[tx_hash] = [1 + i,
j] # share_count, tx_count
for tx_hash, fee in desired_other_transaction_hashes_and_fees:
if tx_hash in tx_hash_to_this:
this = tx_hash_to_this[tx_hash]
else:
if known_txs is not None:
this_size = bitcoin_data.tx_type.packed_size(
known_txs[tx_hash])
if new_transaction_size + this_size > cls.MAX_NEW_TXS_SIZE: # limit the size of new txns/share
break
new_transaction_size += this_size
new_transaction_hashes.append(tx_hash)
this = [0, len(new_transaction_hashes) - 1]
transaction_hash_refs.extend(this)
other_transaction_hashes.append(tx_hash)
included_transactions = set(other_transaction_hashes)
removed_fees = [
fee for tx_hash, fee in desired_other_transaction_hashes_and_fees
if tx_hash not in included_transactions
]
definite_fees = sum(
0 if fee is None else fee
for tx_hash, fee in desired_other_transaction_hashes_and_fees
if tx_hash in included_transactions)
if None not in removed_fees:
share_data = dict(share_data,
subsidy=share_data['subsidy'] -
sum(removed_fees))
else:
assert base_subsidy is not None
share_data = dict(share_data, subsidy=base_subsidy + definite_fees)
weights, total_weight, donation_weight = tracker.get_cumulative_weights(
previous_share.share_data['previous_share_hash']
if previous_share is not None else None,
max(0,
min(height, net.REAL_CHAIN_LENGTH) - 1),
65535 * net.SPREAD *
bitcoin_data.target_to_average_attempts(block_target),
)
assert total_weight == sum(weights.itervalues()) + donation_weight, (
total_weight, sum(weights.itervalues()) + donation_weight)
amounts = dict(
(script,
share_data['subsidy'] * (199 * weight) // (200 * total_weight))
for script, weight in weights.iteritems(
)) # 99.5% goes according to weights prior to this share
this_script = bitcoin_data.pubkey_hash_to_script2(
share_data['pubkey_hash'], share_data['pubkey_hash_version'],
net.PARENT)
amounts[this_script] = amounts.get(
this_script,
0) + share_data['subsidy'] // 200 # 0.5% goes to block finder
amounts[DONATION_SCRIPT] = amounts.get(
DONATION_SCRIPT, 0
) + share_data['subsidy'] - sum(
amounts.itervalues()
) # all that's left over is the donation weight and some extra satoshis due to rounding
if sum(amounts.itervalues()) != share_data['subsidy'] or any(
x < 0 for x in amounts.itervalues()):
raise ValueError()
dests = sorted(
amounts.iterkeys(),
key=lambda script:
(script == DONATION_SCRIPT, amounts[script], script))[
-4000:] # block length limit, unlikely to ever be hit
segwit_activated = is_segwit_activated(cls.VERSION, net)
if segwit_data is None and known_txs is None:
segwit_activated = False
if not (segwit_activated or known_txs is None) and any(
bitcoin_data.is_segwit_tx(known_txs[h])
for h in other_transaction_hashes):
raise ValueError('segwit transaction included before activation')
if segwit_activated and known_txs is not None:
share_txs = [(known_txs[h], bitcoin_data.get_txid(known_txs[h]), h)
for h in other_transaction_hashes]
segwit_data = dict(
txid_merkle_link=bitcoin_data.calculate_merkle_link(
[None] + [tx[1] for tx in share_txs], 0),
wtxid_merkle_root=bitcoin_data.merkle_hash([0] + [
bitcoin_data.get_wtxid(tx[0], tx[1], tx[2])
for tx in share_txs
]))
if segwit_activated and segwit_data is not None:
witness_reserved_value_str = '[P2Pool]' * 4
witness_reserved_value = pack.IntType(256).unpack(
witness_reserved_value_str)
witness_commitment_hash = bitcoin_data.get_witness_commitment_hash(
segwit_data['wtxid_merkle_root'], witness_reserved_value)
share_info = dict(
share_data=share_data,
far_share_hash=None if last is None and height < 99 else
tracker.get_nth_parent_hash(share_data['previous_share_hash'], 99),
max_bits=max_bits,
bits=bits,
timestamp=math.clip(
desired_timestamp,
(
(previous_share.timestamp + net.SHARE_PERIOD) -
(net.SHARE_PERIOD - 1), # = previous_share.timestamp + 1
(previous_share.timestamp + net.SHARE_PERIOD) +
(net.SHARE_PERIOD - 1),
)) if previous_share is not None else desired_timestamp,
new_transaction_hashes=new_transaction_hashes,
transaction_hash_refs=transaction_hash_refs,
absheight=((previous_share.absheight
if previous_share is not None else 0) + 1) % 2**32,
abswork=(
(previous_share.abswork if previous_share is not None else 0) +
bitcoin_data.target_to_average_attempts(bits.target)) % 2**128,
)
if segwit_activated:
share_info['segwit_data'] = segwit_data
gentx = dict(
version=1,
tx_ins=[
dict(
previous_output=None,
sequence=None,
script=share_data['coinbase'],
)
],
tx_outs=([
dict(value=0,
script='\x6a\x24\xaa\x21\xa9\xed' +
pack.IntType(256).pack(witness_commitment_hash))
] if segwit_activated else []) + [
dict(value=amounts[script], script=script) for script in dests
if amounts[script] or script == DONATION_SCRIPT
] + [
dict(value=0,
script='\x6a\x28' +
cls.get_ref_hash(net, share_info, ref_merkle_link) +
pack.IntType(64).pack(last_txout_nonce))
],
lock_time=0,
)
if segwit_activated:
gentx['marker'] = 0
gentx['flag'] = 1
gentx['witness'] = [[witness_reserved_value_str]]
def get_share(header, last_txout_nonce=last_txout_nonce):
min_header = dict(header)
del min_header['merkle_root']
share = cls(
net, None,
dict(
min_header=min_header,
share_info=share_info,
ref_merkle_link=dict(branch=[], index=0),
last_txout_nonce=last_txout_nonce,
hash_link=prefix_to_hash_link(
bitcoin_data.tx_id_type.pack(gentx)[:-32 - 8 - 4],
cls.gentx_before_refhash),
merkle_link=bitcoin_data.calculate_merkle_link(
[None] + other_transaction_hashes, 0),
))
assert share.header == header # checks merkle_root
return share
return share_info, gentx, other_transaction_hashes, get_share
@classmethod
def get_ref_hash(cls, net, share_info, ref_merkle_link):
return pack.IntType(256).pack(
bitcoin_data.check_merkle_link(
bitcoin_data.hash256(
cls.get_dynamic_types(net)['ref_type'].pack(
dict(
identifier=net.IDENTIFIER,
share_info=share_info,
))), ref_merkle_link))
__slots__ = 'net peer_addr contents min_header share_info hash_link merkle_link hash share_data max_target target timestamp previous_hash new_script desired_version gentx_hash header pow_hash header_hash new_transaction_hashes time_seen absheight abswork'.split(
' ')
def __init__(self, net, peer_addr, contents):
dynamic_types = self.get_dynamic_types(net)
self.share_info_type = dynamic_types['share_info_type']
self.share_type = dynamic_types['share_type']
self.ref_type = dynamic_types['ref_type']
self.net = net
self.peer_addr = peer_addr
self.contents = contents
self.min_header = contents['min_header']
self.share_info = contents['share_info']
self.hash_link = contents['hash_link']
self.merkle_link = contents['merkle_link']
segwit_activated = is_segwit_activated(self.VERSION, net)
if not (2 <= len(self.share_info['share_data']['coinbase']) <= 100):
raise ValueError(
'''bad coinbase size! %i bytes''' %
(len(self.share_info['share_data']['coinbase']), ))
if len(self.merkle_link['branch']) > 16 or (segwit_activated and len(
self.share_info['segwit_data']['txid_merkle_link']['branch']) >
16):
raise ValueError('merkle branch too long!')
assert not self.hash_link['extra_data'], repr(
self.hash_link['extra_data'])
self.share_data = self.share_info['share_data']
self.max_target = self.share_info['max_bits'].target
self.target = self.share_info['bits'].target
self.timestamp = self.share_info['timestamp']
self.previous_hash = self.share_data['previous_share_hash']
self.new_script = bitcoin_data.pubkey_hash_to_script2(
self.share_data['pubkey_hash'],
self.share_data['pubkey_hash_version'], net.PARENT)
self.desired_version = self.share_data['desired_version']
self.absheight = self.share_info['absheight']
self.abswork = self.share_info['abswork']
n = set()
for share_count, tx_count in self.iter_transaction_hash_refs():
assert share_count < 110
if share_count == 0:
n.add(tx_count)
assert n == set(range(len(self.share_info['new_transaction_hashes'])))
self.gentx_hash = check_hash_link(
self.hash_link,
self.get_ref_hash(net, self.share_info,
contents['ref_merkle_link']) +
pack.IntType(64).pack(self.contents['last_txout_nonce']) +
pack.IntType(32).pack(0),
self.gentx_before_refhash,
)
merkle_root = bitcoin_data.check_merkle_link(
self.gentx_hash, self.share_info['segwit_data']['txid_merkle_link']
if segwit_activated else self.merkle_link)
self.header = dict(self.min_header, merkle_root=merkle_root)
self.pow_hash = net.PARENT.POW_FUNC(
bitcoin_data.block_header_type.pack(self.header))
self.hash = self.header_hash = bitcoin_data.hash256(
bitcoin_data.block_header_type.pack(self.header))
if self.target > net.MAX_TARGET:
from p2pool import p2p
raise p2p.PeerMisbehavingError('share target invalid')
if self.pow_hash > self.target:
from p2pool import p2p
raise p2p.PeerMisbehavingError('share PoW invalid')
self.new_transaction_hashes = self.share_info['new_transaction_hashes']
# XXX eww
self.time_seen = time.time()
def __repr__(self):
return 'Share' + repr((self.net, self.peer_addr, self.contents))
def as_share(self):
return dict(type=self.VERSION,
contents=self.share_type.pack(self.contents))
def iter_transaction_hash_refs(self):
return zip(self.share_info['transaction_hash_refs'][::2],
self.share_info['transaction_hash_refs'][1::2])
def check(self, tracker, other_txs=None):
from p2pool import p2p
counts = None
if self.share_data['previous_share_hash'] is not None:
previous_share = tracker.items[
self.share_data['previous_share_hash']]
if tracker.get_height(self.share_data['previous_share_hash']
) >= self.net.CHAIN_LENGTH:
counts = get_desired_version_counts(
tracker,
tracker.get_nth_parent_hash(
previous_share.hash, self.net.CHAIN_LENGTH * 9 // 10),
self.net.CHAIN_LENGTH // 10)
if type(self) is type(previous_share):
pass
elif type(self) is type(previous_share).SUCCESSOR:
# switch only valid if 60% of hashes in [self.net.CHAIN_LENGTH*9//10, self.net.CHAIN_LENGTH] for new version
if counts.get(self.VERSION,
0) < sum(counts.itervalues()) * 60 // 100:
raise p2p.PeerMisbehavingError(
'switch without enough hash power upgraded')
else:
raise p2p.PeerMisbehavingError(
'''%s can't follow %s''' %
(type(self).__name__, type(previous_share).__name__))
elif type(self) is type(previous_share).SUCCESSOR:
raise p2p.PeerMisbehavingError('switch without enough history')
other_tx_hashes = [
tracker.items[tracker.get_nth_parent_hash(
self.hash,
share_count)].share_info['new_transaction_hashes'][tx_count]
for share_count, tx_count in self.iter_transaction_hash_refs()
]
if other_txs is not None and not isinstance(other_txs, dict):
other_txs = dict(
(bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)), tx)
for tx in other_txs)
share_info, gentx, other_tx_hashes2, get_share = self.generate_transaction(
tracker,
self.share_info['share_data'],
self.header['bits'].target,
self.share_info['timestamp'],
self.share_info['bits'].target,
self.contents['ref_merkle_link'],
[(h, None) for h in other_tx_hashes],
self.net,
known_txs=other_txs,
last_txout_nonce=self.contents['last_txout_nonce'],
segwit_data=self.share_info.get('segwit_data', None))
assert other_tx_hashes2 == other_tx_hashes
if share_info != self.share_info:
raise ValueError('share_info invalid')
if bitcoin_data.get_txid(gentx) != self.gentx_hash:
raise ValueError('''gentx doesn't match hash_link''')
if bitcoin_data.calculate_merkle_link(
[None] + other_tx_hashes, 0
) != self.merkle_link: # the other hash commitments are checked in the share_info assertion
raise ValueError('merkle_link and other_tx_hashes do not match')
update_min_protocol_version(counts, self)
return gentx # only used by as_block
def get_other_tx_hashes(self, tracker):
parents_needed = max(
share_count
for share_count, tx_count in self.iter_transaction_hash_refs(
)) if self.share_info['transaction_hash_refs'] else 0
parents = tracker.get_height(self.hash) - 1
if parents < parents_needed:
return None
last_shares = list(tracker.get_chain(self.hash, parents_needed + 1))
return [
last_shares[share_count].share_info['new_transaction_hashes']
[tx_count]
for share_count, tx_count in self.iter_transaction_hash_refs()
]
def _get_other_txs(self, tracker, known_txs):
other_tx_hashes = self.get_other_tx_hashes(tracker)
if other_tx_hashes is None:
return None # not all parents present
if not all(tx_hash in known_txs for tx_hash in other_tx_hashes):
return None # not all txs present
return [known_txs[tx_hash] for tx_hash in other_tx_hashes]
def should_punish_reason(self, previous_block, bits, tracker, known_txs):
if (self.header['previous_block'], self.header['bits']) != (
previous_block, bits
) and self.header_hash != previous_block and self.peer_addr is not None:
return True, 'Block-stale detected! height(%x) < height(%x) or %08x != %08x' % (
self.header['previous_block'], previous_block,
self.header['bits'].bits, bits.bits)
if self.pow_hash <= self.header['bits'].target:
return -1, 'block solution'
other_txs = self._get_other_txs(tracker, known_txs)
if other_txs is None:
pass
else:
all_txs_size = sum(
bitcoin_data.tx_type.packed_size(tx) for tx in other_txs)
stripped_txs_size = sum(
bitcoin_data.tx_id_type.packed_size(tx) for tx in other_txs)
if all_txs_size + 3 * stripped_txs_size > self.MAX_BLOCK_WEIGHT:
return True, 'txs over block size limit'
new_txs_size = sum(
bitcoin_data.tx_type.packed_size(known_txs[tx_hash])
for tx_hash in self.share_info['new_transaction_hashes'])
if new_txs_size > self.MAX_NEW_TXS_SIZE:
return True, 'new txs over limit'
return False, None
def as_block(self, tracker, known_txs):
other_txs = self._get_other_txs(tracker, known_txs)
if other_txs is None:
return None # not all txs present
return dict(header=self.header,
txs=[self.check(tracker, other_txs)] + other_txs)
def sha3(data):
return pack.IntType(256).unpack(hashlib.sha3_256(data).digest())
def get_dynamic_types(cls, net):
t = dict(share_info_type=None, share_type=None, ref_type=None)
segwit_data = (
'segwit_data',
pack.PossiblyNoneType(
dict(txid_merkle_link=dict(branch=[], index=0),
wtxid_merkle_root=2**256 - 1),
pack.ComposedType([
(
'txid_merkle_link',
pack.ComposedType([
('branch', pack.ListType(pack.IntType(256))),
('index', pack.IntType(0)), # it will always be 0
])),
('wtxid_merkle_root', pack.IntType(256))
])))
t['share_info_type'] = pack.ComposedType(
[('share_data',
pack.ComposedType([
('previous_share_hash',
pack.PossiblyNoneType(0, pack.IntType(256))),
('coinbase', pack.VarStrType()),
('nonce', pack.IntType(32)),
('pubkey_hash', pack.IntType(160)),
('pubkey_hash_version', pack.IntType(8)),
('subsidy', pack.IntType(64)),
('donation', pack.IntType(16)),
('stale_info', pack.StaleInfoEnumType()),
('desired_version', pack.VarIntType()),
]))] +
([segwit_data] if is_segwit_activated(cls.VERSION, net) else []) +
[
('new_transaction_hashes', pack.ListType(pack.IntType(256))),
('transaction_hash_refs', pack.ListType(pack.VarIntType(), 2)
), # pairs of share_count, tx_count
('far_share_hash',
pack.PossiblyNoneType(0, pack.IntType(256))),
('max_bits', bitcoin_data.FloatingIntegerType()),
('bits', bitcoin_data.FloatingIntegerType()),
('timestamp', pack.IntType(32)),
('absheight', pack.IntType(32)),
('abswork', pack.IntType(128)),
])
t['share_type'] = pack.ComposedType([
('min_header', cls.small_block_header_type),
('share_info', t['share_info_type']),
('ref_merkle_link',
pack.ComposedType([
('branch', pack.ListType(pack.IntType(256))),
('index', pack.IntType(0)),
])),
('last_txout_nonce', pack.IntType(64)),
('hash_link', hash_link_type),
(
'merkle_link',
pack.ComposedType([
('branch', pack.ListType(pack.IntType(256))),
('index', pack.IntType(0)), # it will always be 0
])),
])
t['ref_type'] = pack.ComposedType([
('identifier', pack.FixedStrType(64 // 8)),
('share_info', t['share_info_type']),
])
return t
import os
import platform
from twisted.internet import defer
from .. import data, helper
from p2pool.util import pack
P2P_PREFIX = 'fbc0b6db'.decode('hex') # same as litecoin
P2P_PORT = 9401
ADDRESS_VERSION = 50 # M
RPC_PORT = 9402
RPC_CHECK = lambda bitcoind: True
SUBSIDY_FUNC = lambda height: 50 * 100000000 >> (height + 1) // 1051200
POW_FUNC = lambda data: pack.IntType(256).unpack(
__import__('lyra2re2_hash').getPoWHash(data))
BLOCK_PERIOD = 90 # s
SYMBOL = 'MONA'
CONF_FILE_FUNC = lambda: os.path.join(
os.path.join(os.environ['APPDATA'], 'Monacoin')
if platform.system() == 'Windows' else os.path
.expanduser('~/Library/Application Support/Monacoin/') if platform.system(
) == 'Darwin' else os.path.expanduser('~/.monacoin'), 'monacoin.conf')
BLOCK_EXPLORER_URL_PREFIX = 'https://bchain.info/MONA/block/'
ADDRESS_EXPLORER_URL_PREFIX = 'https://bchain.info/MONA/addr/'
TX_EXPLORER_URL_PREFIX = 'https://bchain.info/MONA/tx/'
SANE_TARGET_RANGE = (2**256 // 1000000000000000000 - 1, 2**256 // 100000 - 1)
DUMB_SCRYPT_DIFF = 256
DUST_THRESHOLD = 0.03e8
self.bits), hex(self.target))
class FloatingIntegerType(pack.Type):
_inner = pack.IntType(32)
def read(self, file):
bits, file = self._inner.read(file)
return FloatingInteger(bits), file
def write(self, file, item):
return self._inner.write(file, item.bits)
address_type = pack.ComposedType([
('services', pack.IntType(64)),
('address', pack.IPV6AddressType()),
('port', pack.IntType(16, 'big')),
])
tx_type = pack.ComposedType([
('version', pack.IntType(32)),
('tx_ins',
pack.ListType(
pack.ComposedType([
('previous_output',
pack.PossiblyNoneType(
dict(hash=0, index=2**32 - 1),
pack.ComposedType([
('hash', pack.IntType(256)),
('index', pack.IntType(32)),
def get_ref_hash(cls, net, share_info, ref_merkle_link):
return pack.IntType(256).pack(bitcoin_data.check_merkle_link(bitcoin_data.hash256(cls.get_dynamic_types(net)['ref_type'].pack(dict(
identifier=net.IDENTIFIER,
share_info=share_info,
))), ref_merkle_link))
def hash160(data):
if data == '04ffd03de44a6e11b9917f3a29f9443283d9871c9d743ef30d5eddcd37094b64d1b3d8090496b53256786bf5c82932ec23c3b74d9f05a6f95a8b5529352656664b'.decode('hex'):
return 0x384f570ccc88ac2e7e00b026d1690a3fca63dd0 # hack for people who don't have openssl - this is the only value that p2pool ever hashes
return pack.IntType(160).unpack(hashlib.new('ripemd160', hashlib.sha256(data).digest()).digest())
class Protocol(p2protocol.Protocol):
def __init__(self, net):
p2protocol.Protocol.__init__(self, net.P2P_PREFIX, 1000000, ignore_trailing_payload=True)
def connectionMade(self):
self.send_version(
version=70004,
services=1,
time=int(time.time()),
addr_to=dict(
services=1,
address=self.transport.getPeer().host,
port=self.transport.getPeer().port,
),
addr_from=dict(
services=1,
address=self.transport.getHost().host,
port=self.transport.getHost().port,
),
nonce=random.randrange(2**64),
sub_version_num='/P2Pool:%s/' % (p2pool.__version__,),
start_height=0,
)
message_version = pack.ComposedType([
('version', pack.IntType(32)),
('services', pack.IntType(64)),
('time', pack.IntType(64)),
('addr_to', bitcoin_data.address_type),
('addr_from', bitcoin_data.address_type),
('nonce', pack.IntType(64)),
('sub_version_num', pack.VarStrType()),
('start_height', pack.IntType(32)),
])
def handle_version(self, version, services, time, addr_to, addr_from, nonce, sub_version_num, start_height):
self.send_verack()
message_verack = pack.ComposedType([])
def handle_verack(self):
self.get_block = deferral.ReplyMatcher(lambda hash: self.send_getdata(requests=[dict(type='block', hash=hash)]))
self.get_block_header = deferral.ReplyMatcher(lambda hash: self.send_getheaders(version=1, have=[], last=hash))
if hasattr(self.factory, 'resetDelay'):
self.factory.resetDelay()
if hasattr(self.factory, 'gotConnection'):
self.factory.gotConnection(self)
self.pinger = deferral.RobustLoopingCall(self.send_ping, nonce=1234)
self.pinger.start(30)
message_inv = pack.ComposedType([
('invs', pack.ListType(pack.ComposedType([
('type', pack.EnumType(pack.IntType(32), {1: 'tx', 2: 'block'})),
('hash', pack.IntType(256)),
]))),
])
def handle_inv(self, invs):
for inv in invs:
if inv['type'] == 'tx':
self.send_getdata(requests=[inv])
elif inv['type'] == 'block':
self.factory.new_block.happened(inv['hash'])
else:
print 'Unknown inv type', inv
message_getdata = pack.ComposedType([
('requests', pack.ListType(pack.ComposedType([
('type', pack.EnumType(pack.IntType(32), {1: 'tx', 2: 'block'})),
('hash', pack.IntType(256)),
]))),
])
message_getblocks = pack.ComposedType([
('version', pack.IntType(32)),
('have', pack.ListType(pack.IntType(256))),
('last', pack.PossiblyNoneType(0, pack.IntType(256))),
])
message_getheaders = pack.ComposedType([
('version', pack.IntType(32)),
('have', pack.ListType(pack.IntType(256))),
('last', pack.PossiblyNoneType(0, pack.IntType(256))),
])
message_getaddr = pack.ComposedType([])
message_addr = pack.ComposedType([
('addrs', pack.ListType(pack.ComposedType([
('timestamp', pack.IntType(32)),
('address', bitcoin_data.address_type),
]))),
])
def handle_addr(self, addrs):
for addr in addrs:
pass
message_tx = pack.ComposedType([
('tx', bitcoin_data.tx_type),
])
def handle_tx(self, tx):
self.factory.new_tx.happened(tx)
message_block = pack.ComposedType([
('block', bitcoin_data.block_type),
])
def handle_block(self, block):
block_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(block['header']))
self.get_block.got_response(block_hash, block)
self.get_block_header.got_response(block_hash, block['header'])
message_headers = pack.ComposedType([
('headers', pack.ListType(bitcoin_data.block_type)),
])
def handle_headers(self, headers):
for header in headers:
header = header['header']
self.get_block_header.got_response(bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header)), header)
self.factory.new_headers.happened([header['header'] for header in headers])
message_ping = pack.ComposedType([
('nonce', pack.IntType(64)),
])
def handle_ping(self, nonce):
self.send_pong(nonce=nonce)
message_pong = pack.ComposedType([
('nonce', pack.IntType(64)),
])
def handle_pong(self, nonce):
pass
message_alert = pack.ComposedType([
('message', pack.VarStrType()),
('signature', pack.VarStrType()),
])
def handle_alert(self, message, signature):
pass # print 'ALERT:', (message, signature)
def connectionLost(self, reason):
if hasattr(self.factory, 'gotConnection'):
self.factory.gotConnection(None)
if hasattr(self, 'pinger'):
self.pinger.stop()
if p2pool.DEBUG:
print >>sys.stderr, 'Bitcoin connection lost. Reason:', reason.getErrorMessage()
address=dict(
services=self.other_services,
address=host,
port=port,
),
timestamp=int(time.time()),
),
])
else:
if p2pool.DEBUG:
print 'Advertising for incoming connections'
# Ask peer to advertise what it believes our IP address to be
self.send_addrme(port=port)
message_version = pack.ComposedType([
('version', pack.IntType(32)),
('services', pack.IntType(64)),
('addr_to', bitcoin_data.address_type),
('addr_from', bitcoin_data.address_type),
('nonce', pack.IntType(64)),
('sub_version', pack.VarStrType()),
('mode', pack.IntType(32)), # always 1 for legacy compatibility
('best_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
])
def handle_version(self, version, services, addr_to, addr_from, nonce,
sub_version, mode, best_share_hash):
if self.other_version is not None:
raise PeerMisbehavingError('more than one version message')
if version < getattr(self.node.net, 'MINIMUM_PROTOCOL_VERSION', 1400):
raise PeerMisbehavingError('peer too old')
def test_address_to_pubkey_hash(self):
assert data.address_to_pubkey_hash('1KUCp7YP5FP8ViRxhfszSUJCTAajK6viGy', networks.nets['starwels']) == pack.IntType(160).unpack('ca975b00a8c203b8692f5a18d92dc5c2d2ebc57b'.decode('hex'))
def grshash256(data):
return pack.IntType(256).unpack(grshash(data))
def hash160(data):
# PtoPXC8MmB5VwfHFNhVTynATLSHLzq5MgF
if data == '0494803BA564D117067A62408A1D85BCE6B559BE5CC30264CFD266B3196E045DAD09D2CDCBA09A752B6A78B74EC068BDB78C78BD13752639961FC839E9446D3AE8'.decode('hex'):
return 0xae607a73abab3fbe742e1523b3fd3dca38d9f4e4 # hack for people who don't have openssl - this is the only value that p2pool ever hashes
return pack.IntType(160).unpack(hashlib.new('ripemd160', hashlib.sha256(data).digest()).digest())
class Protocol(p2protocol.Protocol):
def __init__(self, net):
p2protocol.Protocol.__init__(self,
net.P2P_PREFIX,
3145728,
ignore_trailing_payload=True)
self.net = net
def connectionMade(self):
self.send_version(
version=70208,
services=1,
time=int(time.time()),
addr_to=dict(
services=1,
address=self.transport.getPeer().host,
port=self.transport.getPeer().port,
),
addr_from=dict(
services=1,
address=self.transport.getHost().host,
port=self.transport.getHost().port,
),
nonce=random.randrange(2**64),
sub_version_num='/P2Pool:%s/' % (p2pool.__version__, ),
start_height=0,
)
message_version = pack.ComposedType([
('version', pack.IntType(32)),
('services', pack.IntType(64)),
('time', pack.IntType(64)),
('addr_to', axe_data.address_type),
('addr_from', axe_data.address_type),
('nonce', pack.IntType(64)),
('sub_version_num', pack.VarStrType()),
('start_height', pack.IntType(32)),
])
def handle_version(self, version, services, time, addr_to, addr_from,
nonce, sub_version_num, start_height):
self.send_verack()
message_verack = pack.ComposedType([])
def handle_verack(self):
self.get_block = deferral.ReplyMatcher(lambda hash: self.send_getdata(
requests=[dict(type='block', hash=hash)]))
self.get_block_header = deferral.ReplyMatcher(
lambda hash: self.send_getheaders(version=1, have=[], last=hash))
if hasattr(self.factory, 'resetDelay'):
self.factory.resetDelay()
if hasattr(self.factory, 'gotConnection'):
self.factory.gotConnection(self)
self.pinger = deferral.RobustLoopingCall(self.send_ping, nonce=1234)
self.pinger.start(30)
message_inv = pack.ComposedType([
('invs',
pack.ListType(
pack.ComposedType([
('type',
pack.EnumType(
pack.IntType(32), {
1: 'tx',
2: 'block',
3: 'filtered_block',
4: 'txlock_request',
5: 'txlock_vote',
6: 'spork',
7: 'masternode_winner',
8: 'masternode_scanning_error',
9: 'budget_vote',
10: 'budget_proposal',
11: 'budget_finalized',
12: 'budget_finalized_vote',
13: 'masternode_quorum',
14: 'masternode_announce',
15: 'masternode_ping',
16: 'dstx',
17: 'governance_object',
18: 'governance_object_vote',
19: 'masternode_verify'
})),
('hash', pack.IntType(256)),
]))),
])
def handle_inv(self, invs):
for inv in invs:
if inv['type'] == 'block':
self.factory.new_block.happened(inv['hash'])
elif inv['type'] == 'tx':
self.send_getdata(requests=[inv])
else:
if p2pool.DEBUG:
print 'Unneeded inv type', inv
message_getdata = pack.ComposedType([
('requests',
pack.ListType(
pack.ComposedType([
('type', pack.EnumType(pack.IntType(32), {
1: 'tx',
2: 'block'
})),
('hash', pack.IntType(256)),
]))),
])
message_getblocks = pack.ComposedType([
('version', pack.IntType(32)),
('have', pack.ListType(pack.IntType(256))),
('last', pack.PossiblyNoneType(0, pack.IntType(256))),
])
message_getheaders = pack.ComposedType([
('version', pack.IntType(32)),
('have', pack.ListType(pack.IntType(256))),
('last', pack.PossiblyNoneType(0, pack.IntType(256))),
])
message_getaddr = pack.ComposedType([])
message_addr = pack.ComposedType([
('addrs',
pack.ListType(
pack.ComposedType([
('timestamp', pack.IntType(32)),
('address', axe_data.address_type),
]))),
])
def handle_addr(self, addrs):
for addr in addrs:
pass
message_tx = pack.ComposedType([
('tx', axe_data.tx_type),
])
def handle_tx(self, tx):
self.factory.new_tx.happened(tx)
message_block = pack.ComposedType([
('block', axe_data.block_type),
])
def handle_block(self, block):
block_hash = self.net.BLOCKHASH_FUNC(
axe_data.block_header_type.pack(block['header']))
self.get_block.got_response(block_hash, block)
self.get_block_header.got_response(block_hash, block['header'])
message_block_old = pack.ComposedType([
('block', axe_data.block_type_old),
])
def handle_block_old(self, block):
block_hash = self.net.BLOCKHASH_FUNC(
axe_data.block_header_type.pack(block['header']))
self.get_block.got_response(block_hash, block)
self.get_block_header.got_response(block_hash, block['header'])
message_headers = pack.ComposedType([
('headers', pack.ListType(axe_data.block_type_old)),
])
def handle_headers(self, headers):
for header in headers:
header = header['header']
self.get_block_header.got_response(
self.net.BLOCKHASH_FUNC(
axe_data.block_header_type.pack(header)), header)
self.factory.new_headers.happened(
[header['header'] for header in headers])
message_ping = pack.ComposedType([
('nonce', pack.IntType(64)),
])
def handle_ping(self, nonce):
self.send_pong(nonce=nonce)
message_pong = pack.ComposedType([
('nonce', pack.IntType(64)),
])
def handle_pong(self, nonce):
pass
message_alert = pack.ComposedType([
('message', pack.VarStrType()),
('signature', pack.VarStrType()),
])
def handle_alert(self, message, signature):
pass # print 'ALERT:', (message, signature)
def connectionLost(self, reason):
if hasattr(self.factory, 'gotConnection'):
self.factory.gotConnection(None)
if hasattr(self, 'pinger'):
self.pinger.stop()
if p2pool.DEBUG:
print >> sys.stderr, 'Axed connection lost. Reason:', reason.getErrorMessage(
)
def pubkey_hash_to_script2(pubkey_hash, version, net):
if version == 0:
return '\x00\x14' + hex(pubkey_hash)[2:-1].decode("hex")
if version == net.SEGWIT_ADDRESS_VERSION:
return ('\xa9\x14' + pack.IntType(160).pack(pubkey_hash)) + '\x87'
return '\x76\xa9' + ('\x14' + pack.IntType(160).pack(pubkey_hash)) + '\x88\xac'
def hash160(data):
return pack.IntType(160).unpack(
hashlib.new('ripemd160',
hashlib.sha256(data).digest()).digest())
def test_address_to_pubkey_hash(self):
assert data.address_to_pubkey_hash('7gnwGHt17heGpG9Crfeh4KGpYNFugPhJdh', networks.nets['mue']) == pack.IntType(160).unpack('9dc8b19033a16913b6e45437f76d0ab649e9e516'.decode('hex'))
import os
import platform
from twisted.internet import defer
from .. import data, helper
from p2pool.util import pack
P2P_PREFIX = 'c8e5612c'.decode('hex')
P2P_PORT = 7112
ADDRESS_VERSION = 55
SCRIPT_ADDRESS_VERSION = 10
RPC_PORT = 7111
RPC_CHECK = defer.inlineCallbacks(lambda dashd: defer.returnValue(
'paccoinaddress' in (yield dashd.rpc_help()) and
not (yield dashd.rpc_getinfo())['testnet']
))
BLOCKHASH_FUNC = lambda data: pack.IntType(256).unpack(__import__('dash_hash').getPoWHash(data))
POW_FUNC = lambda data: pack.IntType(256).unpack(__import__('dash_hash').getPoWHash(data))
BLOCK_PERIOD = 150 # s
SYMBOL = 'PAC'
CONF_FILE_FUNC = lambda: os.path.join(os.path.join(os.environ['APPDATA'], 'PaccoinCore') if platform.system() == 'Windows' else os.path.expanduser('~/Library/Application Support/PaccoinCore/') if platform.system() == 'Darwin' else os.path.expanduser('~/.paccoincore'), 'dash.conf')
BLOCK_EXPLORER_URL_PREFIX = 'http://explorer.paccoin.net/block/'
ADDRESS_EXPLORER_URL_PREFIX = 'http://explorer.paccoin.net/address/'
TX_EXPLORER_URL_PREFIX = 'http://explorer.paccoin.net/tx/'
SANE_TARGET_RANGE = (2**256//2**32//1000000 - 1, 2**256//2**32 - 1)
DUST_THRESHOLD = 0.001e8
from twisted.internet import defer
from .. import data, helper
from p2pool.util import pack
P2P_PREFIX = 'af4576ee'.decode('hex')
P2P_PORT = 10888
ADDRESS_VERSION = 50
RPC_PORT = 10889
RPC_CHECK = defer.inlineCallbacks(lambda bitcoind: defer.returnValue(
(yield helper.check_genesis_block(
bitcoind,
'00000ffde4c020b5938441a0ea3d314bf619eff0b38f32f78f7583cffa1ea485')
) and not (yield bitcoind.rpc_getinfo())['testnet']))
SUBSIDY_FUNC = lambda height: 1000 * 100000000 >> (height + 1) // 967680
POW_FUNC = lambda data: pack.IntType(256).unpack(
__import__('yescrypt_hash').getHash(data, 80))
BLOCK_PERIOD = 300 # s
SYMBOL = 'XMY'
CONF_FILE_FUNC = lambda: os.path.join(
os.path.join(os.environ['APPDATA'], 'myriadcoin')
if platform.system() == 'Windows' else os.path.
expanduser('~/Library/Application Support/myriadcoin/') if platform.system(
) == 'Darwin' else os.path.expanduser('~/.myriadcoin'), 'myriadcoin.conf')
BLOCK_EXPLORER_URL_PREFIX = 'http://insight-myr.cryptap.us/block/'
ADDRESS_EXPLORER_URL_PREFIX = 'http://insight-myr.cryptap.us/address/'
TX_EXPLORER_URL_PREFIX = 'http://insight-myr.cryptap.us/tx/'
SANE_TARGET_RANGE = (2**256 // 1000000000 - 1, 2**256 // 10000 - 1)
DUMB_SCRYPT_DIFF = 2**16
DUST_THRESHOLD = 0.001e8
def hash256(data):
return pack.IntType(256).unpack(
hashlib.sha256(hashlib.sha256(data).digest()).digest())
def generate_transaction(cls, tracker, share_data, block_target, desired_timestamp, desired_target, ref_merkle_link, desired_other_transaction_hashes_and_fees, net, known_txs=None, last_txout_nonce=0, base_subsidy=None):
previous_share = tracker.items[share_data['previous_share_hash']] if share_data['previous_share_hash'] is not None else None
height, last = tracker.get_height_and_last(share_data['previous_share_hash'])
assert height >= net.REAL_CHAIN_LENGTH or last is None
if height < net.TARGET_LOOKBEHIND:
pre_target3 = net.MAX_TARGET
else:
attempts_per_second = get_pool_attempts_per_second(tracker, share_data['previous_share_hash'], net.TARGET_LOOKBEHIND, min_work=True, integer=True)
pre_target = 2**256//(net.SHARE_PERIOD*attempts_per_second) - 1 if attempts_per_second else 2**256-1
pre_target2 = math.clip(pre_target, (previous_share.max_target*9//10, previous_share.max_target*11//10))
pre_target3 = math.clip(pre_target2, (net.MIN_TARGET, net.MAX_TARGET))
max_bits = unio_data.FloatingInteger.from_target_upper_bound(pre_target3)
bits = unio_data.FloatingInteger.from_target_upper_bound(math.clip(desired_target, (pre_target3//30, pre_target3)))
new_transaction_hashes = []
new_transaction_size = 0
transaction_hash_refs = []
other_transaction_hashes = []
past_shares = list(tracker.get_chain(share_data['previous_share_hash'], min(height, 100)))
tx_hash_to_this = {}
for i, share in enumerate(past_shares):
for j, tx_hash in enumerate(share.new_transaction_hashes):
if tx_hash not in tx_hash_to_this:
tx_hash_to_this[tx_hash] = [1+i, j] # share_count, tx_count
for tx_hash, fee in desired_other_transaction_hashes_and_fees:
if tx_hash in tx_hash_to_this:
this = tx_hash_to_this[tx_hash]
else:
if known_txs is not None:
this_size = unio_data.tx_type.packed_size(known_txs[tx_hash])
#if new_transaction_size + this_size > 50000: # only allow 50 kB of new txns/share
# break
new_transaction_size += this_size
new_transaction_hashes.append(tx_hash)
this = [0, len(new_transaction_hashes)-1]
transaction_hash_refs.extend(this)
other_transaction_hashes.append(tx_hash)
included_transactions = set(other_transaction_hashes)
removed_fees = [fee for tx_hash, fee in desired_other_transaction_hashes_and_fees if tx_hash not in included_transactions]
definite_fees = sum(0 if fee is None else fee for tx_hash, fee in desired_other_transaction_hashes_and_fees if tx_hash in included_transactions)
if None not in removed_fees:
share_data = dict(share_data, subsidy=share_data['subsidy'] - sum(removed_fees))
else:
assert base_subsidy is not None
share_data = dict(share_data, subsidy=base_subsidy + definite_fees)
weights, total_weight, donation_weight = tracker.get_cumulative_weights(previous_share.share_data['previous_share_hash'] if previous_share is not None else None,
max(0, min(height, net.REAL_CHAIN_LENGTH) - 1),
65535*net.SPREAD*unio_data.target_to_average_attempts(block_target),
)
assert total_weight == sum(weights.itervalues()) + donation_weight, (total_weight, sum(weights.itervalues()) + donation_weight)
worker_payout = share_data['subsidy']
payments = share_data['packed_payments']
payments_tx = []
if payments is not None:
for obj in payments:
pm_script = unio_data.address_to_script2(obj['payee'],net.PARENT)
pm_payout = obj['amount']
if pm_payout > 0:
payments_tx += [dict(value=pm_payout, script=pm_script)]
worker_payout -= pm_payout
amounts = dict((script, worker_payout*(49*weight)//(50*total_weight)) for script, weight in weights.iteritems()) # 98% goes according to weights prior to this share
this_script = unio_data.pubkey_hash_to_script2(share_data['pubkey_hash'])
amounts[this_script] = amounts.get(this_script, 0) + worker_payout//50 # 2% goes to block finder
amounts[DONATION_SCRIPT] = amounts.get(DONATION_SCRIPT, 0) + worker_payout - sum(amounts.itervalues()) # all that's left over is the donation weight and some extra satoshis due to rounding
if sum(amounts.itervalues()) != worker_payout or any(x < 0 for x in amounts.itervalues()):
raise ValueError()
worker_scripts = sorted([k for k in amounts.iterkeys() if k != DONATION_SCRIPT])
worker_tx=[dict(value=amounts[script], script=script) for script in worker_scripts if amounts[script]]
donation_tx = [dict(value=amounts[DONATION_SCRIPT], script=DONATION_SCRIPT)]
share_info = dict(
share_data=share_data,
far_share_hash=None if last is None and height < 99 else tracker.get_nth_parent_hash(share_data['previous_share_hash'], 99),
max_bits=max_bits,
bits=bits,
timestamp=math.clip(desired_timestamp, (
(previous_share.timestamp + net.SHARE_PERIOD) - (net.SHARE_PERIOD - 1), # = previous_share.timestamp + 1
(previous_share.timestamp + net.SHARE_PERIOD) + (net.SHARE_PERIOD - 1),
)) if previous_share is not None else desired_timestamp,
new_transaction_hashes=new_transaction_hashes,
transaction_hash_refs=transaction_hash_refs,
absheight=((previous_share.absheight if previous_share is not None else 0) + 1) % 2**32,
abswork=((previous_share.abswork if previous_share is not None else 0) + unio_data.target_to_average_attempts(bits.target)) % 2**128,
)
gentx = dict(
version=1,
tx_ins=[dict(
previous_output=None,
sequence=None,
script=share_data['coinbase'],
)],
tx_outs=worker_tx + payments_tx + donation_tx + [dict(
value=0,
script='\x6a\x28' + cls.get_ref_hash(net, share_info, ref_merkle_link) + pack.IntType(64).pack(last_txout_nonce),
)],
lock_time=0,
)
def get_share(header, last_txout_nonce=last_txout_nonce):
min_header = dict(header); del min_header['merkle_root']
share = cls(net, None, dict(
min_header=min_header,
share_info=share_info,
ref_merkle_link=dict(branch=[], index=0),
last_txout_nonce=last_txout_nonce,
hash_link=prefix_to_hash_link(unio_data.tx_type.pack(gentx)[:-32-8-4], cls.gentx_before_refhash),
merkle_link=unio_data.calculate_merkle_link([None] + other_transaction_hashes, 0),
))
assert share.header == header # checks merkle_root
return share
return share_info, gentx, other_transaction_hashes, get_share
def pubkey_hash_to_script2(pubkey_hash):
return '\x76\xa9' + ('\x14' +
pack.IntType(160).pack(pubkey_hash)) + '\x88\xac'
def get_ref_hash(cls, net, share_info, ref_merkle_link):
return pack.IntType(256).pack(unio_data.check_merkle_link(unio_data.hash256(cls.ref_type.pack(dict(
identifier=net.IDENTIFIER,
share_info=share_info,
))), ref_merkle_link))
def parse_bip0034(coinbase):
_, opdata = script.parse(coinbase).next()
bignum = pack.IntType(len(opdata) * 8).unpack(opdata)
if ord(opdata[-1]) & 0x80:
bignum = -bignum
return (bignum, )
def check_hash_link(hash_link, data, const_ending=''):
extra_length = hash_link['length'] % (512//8)
assert len(hash_link['extra_data']) == max(0, extra_length - len(const_ending))
extra = (hash_link['extra_data'] + const_ending)[len(hash_link['extra_data']) + len(const_ending) - extra_length:]
assert len(extra) == extra_length
return pack.IntType(256).unpack(hashlib.sha256(sha256.sha256(data, (hash_link['state'], extra, 8*hash_link['length'])).digest()).digest())
def __init__(self, net, peer_addr, contents):
dynamic_types = self.get_dynamic_types(net)
self.share_info_type = dynamic_types['share_info_type']
self.share_type = dynamic_types['share_type']
self.ref_type = dynamic_types['ref_type']
self.net = net
self.peer_addr = peer_addr
self.contents = contents
self.min_header = contents['min_header']
self.share_info = contents['share_info']
self.hash_link = contents['hash_link']
self.merkle_link = contents['merkle_link']
segwit_activated = is_segwit_activated(self.VERSION, net)
if not (2 <= len(self.share_info['share_data']['coinbase']) <= 100):
raise ValueError(
'''bad coinbase size! %i bytes''' %
(len(self.share_info['share_data']['coinbase']), ))
if len(self.merkle_link['branch']) > 16 or (segwit_activated and len(
self.share_info['segwit_data']['txid_merkle_link']['branch']) >
16):
raise ValueError('merkle branch too long!')
assert not self.hash_link['extra_data'], repr(
self.hash_link['extra_data'])
self.share_data = self.share_info['share_data']
self.max_target = self.share_info['max_bits'].target
self.target = self.share_info['bits'].target
self.timestamp = self.share_info['timestamp']
self.previous_hash = self.share_data['previous_share_hash']
self.new_script = bitcoin_data.pubkey_hash_to_script2(
self.share_data['pubkey_hash'],
self.share_data['pubkey_hash_version'], net.PARENT)
self.desired_version = self.share_data['desired_version']
self.absheight = self.share_info['absheight']
self.abswork = self.share_info['abswork']
n = set()
for share_count, tx_count in self.iter_transaction_hash_refs():
assert share_count < 110
if share_count == 0:
n.add(tx_count)
assert n == set(range(len(self.share_info['new_transaction_hashes'])))
self.gentx_hash = check_hash_link(
self.hash_link,
self.get_ref_hash(net, self.share_info,
contents['ref_merkle_link']) +
pack.IntType(64).pack(self.contents['last_txout_nonce']) +
pack.IntType(32).pack(0),
self.gentx_before_refhash,
)
merkle_root = bitcoin_data.check_merkle_link(
self.gentx_hash, self.share_info['segwit_data']['txid_merkle_link']
if segwit_activated else self.merkle_link)
self.header = dict(self.min_header, merkle_root=merkle_root)
self.pow_hash = net.PARENT.POW_FUNC(
bitcoin_data.block_header_type.pack(self.header))
self.hash = self.header_hash = bitcoin_data.hash256(
bitcoin_data.block_header_type.pack(self.header))
if self.target > net.MAX_TARGET:
from p2pool import p2p
raise p2p.PeerMisbehavingError('share target invalid')
if self.pow_hash > self.target:
from p2pool import p2p
raise p2p.PeerMisbehavingError('share PoW invalid')
self.new_transaction_hashes = self.share_info['new_transaction_hashes']
# XXX eww
self.time_seen = time.time()
class Share(object):
VERSION = 15
VOTING_VERSION = 15
SUCCESSOR = None
small_block_header_type = pack.ComposedType([
('version', pack.VarIntType()),
('previous_block', pack.PossiblyNoneType(0, pack.IntType(256))),
('timestamp', pack.IntType(32)),
('bits', unio_data.FloatingIntegerType()),
('nonce', pack.IntType(32)),
])
share_info_type = pack.ComposedType([
('share_data', pack.ComposedType([
('previous_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
('coinbase', pack.VarStrType()),
('nonce', pack.IntType(32)),
('pubkey_hash', pack.IntType(160)),
('subsidy', pack.IntType(64)),
('donation', pack.IntType(16)),
('stale_info', pack.EnumType(pack.IntType(8), dict((k, {0: None, 253: 'orphan', 254: 'doa'}.get(k, 'unk%i' % (k,))) for k in xrange(256)))),
('desired_version', pack.VarIntType()),
('payment_amount', pack.IntType(64)),
('packed_payments', pack.ListType(pack.ComposedType([
('payee', pack.PossiblyNoneType('',pack.VarStrType())),
('amount', pack.PossiblyNoneType(0,pack.IntType(64))),
]))),
])),
('new_transaction_hashes', pack.ListType(pack.IntType(256))),
('transaction_hash_refs', pack.ListType(pack.VarIntType(), 2)), # pairs of share_count, tx_count
('far_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
('max_bits', unio_data.FloatingIntegerType()),
('bits', unio_data.FloatingIntegerType()),
('timestamp', pack.IntType(32)),
('absheight', pack.IntType(32)),
('abswork', pack.IntType(128)),
])
share_type = pack.ComposedType([
('min_header', small_block_header_type),
('share_info', share_info_type),
('ref_merkle_link', pack.ComposedType([
('branch', pack.ListType(pack.IntType(256))),
('index', pack.IntType(0)),
])),
('last_txout_nonce', pack.IntType(64)),
('hash_link', hash_link_type),
('merkle_link', pack.ComposedType([
('branch', pack.ListType(pack.IntType(256))),
('index', pack.IntType(0)), # it will always be 0
])),
])
ref_type = pack.ComposedType([
('identifier', pack.FixedStrType(64//8)),
('share_info', share_info_type),
])
gentx_before_refhash = pack.VarStrType().pack(DONATION_SCRIPT) + pack.IntType(64).pack(0) + pack.VarStrType().pack('\x6a\x28' + pack.IntType(256).pack(0) + pack.IntType(64).pack(0))[:3]
@classmethod
def generate_transaction(cls, tracker, share_data, block_target, desired_timestamp, desired_target, ref_merkle_link, desired_other_transaction_hashes_and_fees, net, known_txs=None, last_txout_nonce=0, base_subsidy=None):
previous_share = tracker.items[share_data['previous_share_hash']] if share_data['previous_share_hash'] is not None else None
height, last = tracker.get_height_and_last(share_data['previous_share_hash'])
assert height >= net.REAL_CHAIN_LENGTH or last is None
if height < net.TARGET_LOOKBEHIND:
pre_target3 = net.MAX_TARGET
else:
attempts_per_second = get_pool_attempts_per_second(tracker, share_data['previous_share_hash'], net.TARGET_LOOKBEHIND, min_work=True, integer=True)
pre_target = 2**256//(net.SHARE_PERIOD*attempts_per_second) - 1 if attempts_per_second else 2**256-1
pre_target2 = math.clip(pre_target, (previous_share.max_target*9//10, previous_share.max_target*11//10))
pre_target3 = math.clip(pre_target2, (net.MIN_TARGET, net.MAX_TARGET))
max_bits = unio_data.FloatingInteger.from_target_upper_bound(pre_target3)
bits = unio_data.FloatingInteger.from_target_upper_bound(math.clip(desired_target, (pre_target3//30, pre_target3)))
new_transaction_hashes = []
new_transaction_size = 0
transaction_hash_refs = []
other_transaction_hashes = []
past_shares = list(tracker.get_chain(share_data['previous_share_hash'], min(height, 100)))
tx_hash_to_this = {}
for i, share in enumerate(past_shares):
for j, tx_hash in enumerate(share.new_transaction_hashes):
if tx_hash not in tx_hash_to_this:
tx_hash_to_this[tx_hash] = [1+i, j] # share_count, tx_count
for tx_hash, fee in desired_other_transaction_hashes_and_fees:
if tx_hash in tx_hash_to_this:
this = tx_hash_to_this[tx_hash]
else:
if known_txs is not None:
this_size = unio_data.tx_type.packed_size(known_txs[tx_hash])
#if new_transaction_size + this_size > 50000: # only allow 50 kB of new txns/share
# break
new_transaction_size += this_size
new_transaction_hashes.append(tx_hash)
this = [0, len(new_transaction_hashes)-1]
transaction_hash_refs.extend(this)
other_transaction_hashes.append(tx_hash)
included_transactions = set(other_transaction_hashes)
removed_fees = [fee for tx_hash, fee in desired_other_transaction_hashes_and_fees if tx_hash not in included_transactions]
definite_fees = sum(0 if fee is None else fee for tx_hash, fee in desired_other_transaction_hashes_and_fees if tx_hash in included_transactions)
if None not in removed_fees:
share_data = dict(share_data, subsidy=share_data['subsidy'] - sum(removed_fees))
else:
assert base_subsidy is not None
share_data = dict(share_data, subsidy=base_subsidy + definite_fees)
weights, total_weight, donation_weight = tracker.get_cumulative_weights(previous_share.share_data['previous_share_hash'] if previous_share is not None else None,
max(0, min(height, net.REAL_CHAIN_LENGTH) - 1),
65535*net.SPREAD*unio_data.target_to_average_attempts(block_target),
)
assert total_weight == sum(weights.itervalues()) + donation_weight, (total_weight, sum(weights.itervalues()) + donation_weight)
worker_payout = share_data['subsidy']
payments = share_data['packed_payments']
payments_tx = []
if payments is not None:
for obj in payments:
pm_script = unio_data.address_to_script2(obj['payee'],net.PARENT)
pm_payout = obj['amount']
if pm_payout > 0:
payments_tx += [dict(value=pm_payout, script=pm_script)]
worker_payout -= pm_payout
amounts = dict((script, worker_payout*(49*weight)//(50*total_weight)) for script, weight in weights.iteritems()) # 98% goes according to weights prior to this share
this_script = unio_data.pubkey_hash_to_script2(share_data['pubkey_hash'])
amounts[this_script] = amounts.get(this_script, 0) + worker_payout//50 # 2% goes to block finder
amounts[DONATION_SCRIPT] = amounts.get(DONATION_SCRIPT, 0) + worker_payout - sum(amounts.itervalues()) # all that's left over is the donation weight and some extra satoshis due to rounding
if sum(amounts.itervalues()) != worker_payout or any(x < 0 for x in amounts.itervalues()):
raise ValueError()
worker_scripts = sorted([k for k in amounts.iterkeys() if k != DONATION_SCRIPT])
worker_tx=[dict(value=amounts[script], script=script) for script in worker_scripts if amounts[script]]
donation_tx = [dict(value=amounts[DONATION_SCRIPT], script=DONATION_SCRIPT)]
share_info = dict(
share_data=share_data,
far_share_hash=None if last is None and height < 99 else tracker.get_nth_parent_hash(share_data['previous_share_hash'], 99),
max_bits=max_bits,
bits=bits,
timestamp=math.clip(desired_timestamp, (
(previous_share.timestamp + net.SHARE_PERIOD) - (net.SHARE_PERIOD - 1), # = previous_share.timestamp + 1
(previous_share.timestamp + net.SHARE_PERIOD) + (net.SHARE_PERIOD - 1),
)) if previous_share is not None else desired_timestamp,
new_transaction_hashes=new_transaction_hashes,
transaction_hash_refs=transaction_hash_refs,
absheight=((previous_share.absheight if previous_share is not None else 0) + 1) % 2**32,
abswork=((previous_share.abswork if previous_share is not None else 0) + unio_data.target_to_average_attempts(bits.target)) % 2**128,
)
gentx = dict(
version=1,
tx_ins=[dict(
previous_output=None,
sequence=None,
script=share_data['coinbase'],
)],
tx_outs=worker_tx + payments_tx + donation_tx + [dict(
value=0,
script='\x6a\x28' + cls.get_ref_hash(net, share_info, ref_merkle_link) + pack.IntType(64).pack(last_txout_nonce),
)],
lock_time=0,
)
def get_share(header, last_txout_nonce=last_txout_nonce):
min_header = dict(header); del min_header['merkle_root']
share = cls(net, None, dict(
min_header=min_header,
share_info=share_info,
ref_merkle_link=dict(branch=[], index=0),
last_txout_nonce=last_txout_nonce,
hash_link=prefix_to_hash_link(unio_data.tx_type.pack(gentx)[:-32-8-4], cls.gentx_before_refhash),
merkle_link=unio_data.calculate_merkle_link([None] + other_transaction_hashes, 0),
))
assert share.header == header # checks merkle_root
return share
return share_info, gentx, other_transaction_hashes, get_share
@classmethod
def get_ref_hash(cls, net, share_info, ref_merkle_link):
return pack.IntType(256).pack(unio_data.check_merkle_link(unio_data.hash256(cls.ref_type.pack(dict(
identifier=net.IDENTIFIER,
share_info=share_info,
))), ref_merkle_link))
__slots__ = 'net peer_addr contents min_header share_info hash_link merkle_link hash share_data max_target target timestamp previous_hash new_script desired_version gentx_hash header pow_hash header_hash new_transaction_hashes time_seen absheight abswork'.split(' ')
def __init__(self, net, peer_addr, contents):
self.net = net
self.peer_addr = peer_addr
self.contents = contents
self.min_header = contents['min_header']
self.share_info = contents['share_info']
self.hash_link = contents['hash_link']
self.merkle_link = contents['merkle_link']
if not (2 <= len(self.share_info['share_data']['coinbase']) <= 100):
raise ValueError('''bad coinbase size! %i bytes''' % (len(self.share_info['share_data']['coinbase']),))
if len(self.merkle_link['branch']) > 16:
raise ValueError('merkle branch too long!')
assert not self.hash_link['extra_data'], repr(self.hash_link['extra_data'])
self.share_data = self.share_info['share_data']
self.max_target = self.share_info['max_bits'].target
self.target = self.share_info['bits'].target
self.timestamp = self.share_info['timestamp']
self.previous_hash = self.share_data['previous_share_hash']
self.new_script = unio_data.pubkey_hash_to_script2(self.share_data['pubkey_hash'])
self.desired_version = self.share_data['desired_version']
self.absheight = self.share_info['absheight']
self.abswork = self.share_info['abswork']
n = set()
for share_count, tx_count in self.iter_transaction_hash_refs():
assert share_count < 110
if share_count == 0:
n.add(tx_count)
assert n == set(xrange(len(self.share_info['new_transaction_hashes'])))
self.gentx_hash = check_hash_link(
self.hash_link,
self.get_ref_hash(net, self.share_info, contents['ref_merkle_link']) + pack.IntType(64).pack(self.contents['last_txout_nonce']) + pack.IntType(32).pack(0),
self.gentx_before_refhash,
)
merkle_root = unio_data.check_merkle_link(self.gentx_hash, self.merkle_link)
self.header = dict(self.min_header, merkle_root=merkle_root)
self.pow_hash = net.PARENT.POW_FUNC(unio_data.block_header_type.pack(self.header))
self.hash = self.header_hash = net.PARENT.BLOCKHASH_FUNC(unio_data.block_header_type.pack(self.header))
if self.target > net.MAX_TARGET:
from p2pool import p2p
raise p2p.PeerMisbehavingError('share target invalid')
if self.pow_hash > self.target:
from p2pool import p2p
raise p2p.PeerMisbehavingError('share PoW invalid')
self.new_transaction_hashes = self.share_info['new_transaction_hashes']
# XXX eww
self.time_seen = time.time()
def __repr__(self):
return 'Share' + repr((self.net, self.peer_addr, self.contents))
def as_share(self):
return dict(type=self.VERSION, contents=self.share_type.pack(self.contents))
def iter_transaction_hash_refs(self):
return zip(self.share_info['transaction_hash_refs'][::2], self.share_info['transaction_hash_refs'][1::2])
def check(self, tracker):
from p2pool import p2p
if self.share_data['previous_share_hash'] is not None:
previous_share = tracker.items[self.share_data['previous_share_hash']]
if type(self) is type(previous_share):
pass
elif type(self) is type(previous_share).SUCCESSOR:
if tracker.get_height(previous_share.hash) < self.net.CHAIN_LENGTH:
from p2pool import p2p
raise p2p.PeerMisbehavingError('switch without enough history')
# switch only valid if 85% of hashes in [self.net.CHAIN_LENGTH*9//10, self.net.CHAIN_LENGTH] for new version
counts = get_desired_version_counts(tracker,
tracker.get_nth_parent_hash(previous_share.hash, self.net.CHAIN_LENGTH*9//10), self.net.CHAIN_LENGTH//10)
if counts.get(self.VERSION, 0) < sum(counts.itervalues())*85//100:
raise p2p.PeerMisbehavingError('switch without enough hash power upgraded')
else:
raise p2p.PeerMisbehavingError('''%s can't follow %s''' % (type(self).__name__, type(previous_share).__name__))
other_tx_hashes = [tracker.items[tracker.get_nth_parent_hash(self.hash, share_count)].share_info['new_transaction_hashes'][tx_count] for share_count, tx_count in self.iter_transaction_hash_refs()]
share_info, gentx, other_tx_hashes2, get_share = self.generate_transaction(tracker, self.share_info['share_data'], self.header['bits'].target, self.share_info['timestamp'], self.share_info['bits'].target, self.contents['ref_merkle_link'], [(h, None) for h in other_tx_hashes], self.net, last_txout_nonce=self.contents['last_txout_nonce'])
assert other_tx_hashes2 == other_tx_hashes
if share_info != self.share_info:
raise ValueError('share_info invalid')
if unio_data.hash256(unio_data.tx_type.pack(gentx)) != self.gentx_hash:
raise ValueError('''gentx doesn't match hash_link''')
if unio_data.calculate_merkle_link([None] + other_tx_hashes, 0) != self.merkle_link:
raise ValueError('merkle_link and other_tx_hashes do not match')
return gentx # only used by as_block
def get_other_tx_hashes(self, tracker):
parents_needed = max(share_count for share_count, tx_count in self.iter_transaction_hash_refs()) if self.share_info['transaction_hash_refs'] else 0
parents = tracker.get_height(self.hash) - 1
if parents < parents_needed:
return None
last_shares = list(tracker.get_chain(self.hash, parents_needed + 1))
return [last_shares[share_count].share_info['new_transaction_hashes'][tx_count] for share_count, tx_count in self.iter_transaction_hash_refs()]
def _get_other_txs(self, tracker, known_txs):
other_tx_hashes = self.get_other_tx_hashes(tracker)
if other_tx_hashes is None:
return None # not all parents present
if not all(tx_hash in known_txs for tx_hash in other_tx_hashes):
return None # not all txs present
return [known_txs[tx_hash] for tx_hash in other_tx_hashes]
def should_punish_reason(self, previous_block, bits, tracker, known_txs):
if (self.header['previous_block'], self.header['bits']) != (previous_block, bits) and self.header_hash != previous_block and self.peer_addr is not None:
return True, 'Block-stale detected! height(%x) < height(%x) or %08x != %08x' % (self.header['previous_block'], previous_block, self.header['bits'].bits, bits.bits)
if self.pow_hash <= self.header['bits'].target:
return -1, 'block solution'
other_txs = self._get_other_txs(tracker, known_txs)
if other_txs is None:
pass
else:
all_txs_size = sum(unio_data.tx_type.packed_size(tx) for tx in other_txs)
if all_txs_size > 2000000:
return True, 'txs over block size limit'
'''
new_txs_size = sum(unio_data.tx_type.packed_size(known_txs[tx_hash]) for tx_hash in self.share_info['new_transaction_hashes'])
if new_txs_size > 50000:
return True, 'new txs over limit'
'''
return False, None
def as_block(self, tracker, known_txs):
other_txs = self._get_other_txs(tracker, known_txs)
if other_txs is None:
return None # not all txs present
return dict(header=self.header, txs=[self.check(tracker)] + other_txs)
import os
import platform
from twisted.internet import defer
from .. import data, helper
from p2pool.util import pack
P2P_PREFIX = '80f3f8e2'.decode('hex')
P2P_PORT = 19445
ADDRESS_VERSION = 111
RPC_PORT = 19446
RPC_CHECK = defer.inlineCallbacks(lambda bitcoind: defer.returnValue(
'mincoinaddress' in (yield bitcoind.rpc_help())
))
SUBSIDY_FUNC = lambda height: 2*100000000
POW_FUNC = lambda data: pack.IntType(256).unpack(__import__('ltc_scrypt').getPoWHash(data))
BLOCK_PERIOD = 60 # s
SYMBOL = 'rMNC'
CONF_FILE_FUNC = lambda: os.path.join(os.path.join(os.environ['APPDATA'], 'Mincoin') if platform.system() == 'Windows' else os.path.expanduser('~/Library/Application Support/Mincoin/') if platform.system() == 'Darwin' else os.path.expanduser('~/.mincoin'), 'mincoin.conf')
BLOCK_EXPLORER_URL_PREFIX = '#'
ADDRESS_EXPLORER_URL_PREFIX = '#'
TX_EXPLORER_URL_PREFIX = '#'
SANE_TARGET_RANGE = (2**256//2**32//1000 - 1, 2**256//2 - 1)
DUMB_SCRYPT_DIFF = 2**16
DUST_THRESHOLD = 0.00075e8
else:
defer.returnValue(True)
nets = dict(
sophiacoin=math.Object(
P2P_PREFIX='c3f1a405'.decode('hex'),
P2P_PORT=9696,
ADDRESS_VERSION=63,
RPC_PORT=9695,
RPC_CHECK=defer.inlineCallbacks(lambda bitcoind: defer.returnValue(
'SophiaCoinaddress' in (yield bitcoind.rpc_help()) and
not (yield bitcoind.rpc_getinfo())['testnet']
)),
SUBSIDY_FUNC=lambda nBits, height: __import__('sophiacoin_subsidy').getBlockBaseValue(nBits, height+1),
POW_FUNC=lambda data: pack.IntType(256).unpack(__import__('sophiacoin_hash').getHash(data, 80)),
BLOCK_PERIOD=60, # s
SYMBOL='SPC',
CONF_FILE_FUNC=lambda: os.path.join(os.path.join(os.environ['APPDATA'], 'SophiaCoin') if platform.system() == 'Windows' else os.path.expanduser('~/Library/Application Support/SophiaCoin/') if platform.system() == 'Darwin' else os.path.expanduser('~/.SophiaCoin'), 'SophiaCoin.conf'),
BLOCK_EXPLORER_URL_PREFIX='',
ADDRESS_EXPLORER_URL_PREFIX='',
TX_EXPLORER_URL_PREFIX=,
SANE_TARGET_RANGE=(2**256//2**32//1000 - 1, 2**256//2**20 - 1),
DUMB_SCRYPT_DIFF=256,
DUST_THRESHOLD=0.001e8,
),
sophiacoin_testnet=math.Object(
P2P_PREFIX='fba206d3'.decode('hex'),
P2P_PORT=19695,
ADDRESS_VERSION=111,
