def __init__(self, net, peer_addr, contents, skip_momentum=False):
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 = bitcoin_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(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.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))
midhash = hashlib.sha256(hashlib.sha256(bitcoin_data.block_header_type.pack(self.header)[:80]).digest()).digest()
#print 'MIDHASH: {0}'.format(midhash.encode('hex'))
#print 'A: {0}'.format(self.header['birthdayA'])
#print 'B: {0}'.format(self.header['birthdayB'])
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')
if not skip_momentum:
if memorycoin_momentum.checkMomentum(midhash, self.header['birthdayA'], self.header['birthdayB']) == False:
from p2pool import p2p
raise p2p.PeerMisbehavingError('share momentum invalid')
self.new_transaction_hashes = self.share_info['new_transaction_hashes']
# XXX eww
self.time_seen = time.time()
def got_response(header, user, coinbase_nonce):
assert len(coinbase_nonce) == self.COINBASE_NONCE_LENGTH
new_packed_gentx = packed_gentx[:-self.COINBASE_NONCE_LENGTH-4] + coinbase_nonce + packed_gentx[-4:] if coinbase_nonce != '\0'*self.COINBASE_NONCE_LENGTH else packed_gentx
new_gentx = bitcoin_data.tx_type.unpack(new_packed_gentx) if coinbase_nonce != '\0'*self.COINBASE_NONCE_LENGTH else gentx
header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
pow_hash = self.node.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
try:
if pow_hash <= header['bits'].target or p2pool.DEBUG:
helper.submit_block(dict(header=header, txs=[new_gentx] + other_transactions), False, self.node.factory, self.node.bitcoind, self.node.bitcoind_work, self.node.net)
if pow_hash <= header['bits'].target:
print
print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (self.node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
print
except:
log.err(None, 'Error while processing potential block:')
user, _, _, _ = self.get_user_details(user)
assert header['previous_block'] == ba['previous_block']
assert header['merkle_root'] == bitcoin_data.check_merkle_link(bitcoin_data.hash256(new_packed_gentx), merkle_link)
assert header['bits'] == ba['bits']
# Check momentum using midhash (who knows why it is called that) and birthday values
midhash = hashlib.sha256(hashlib.sha256(bitcoin_data.block_header_type.pack(header)[:80]).digest()).digest()
#print 'MIDHASH: {0}'.format(midhash.encode('hex'))
#print 'A: {0}'.format(header['birthdayA'])
#print 'B: {0}'.format(header['birthdayB'])
momentumc = memorycoin_momentum.checkMomentum(midhash, header['birthdayA'], header['birthdayB'])
#print momentumc
if momentumc == False:
print 'Invalid Momentum from Client!'
return False
on_time = self.new_work_event.times == lp_count
for aux_work, index, hashes in mm_later:
try:
if pow_hash <= aux_work['target'] or p2pool.DEBUG:
df = deferral.retry('Error submitting merged block: (will retry)', 10, 10)(aux_work['merged_proxy'].rpc_getauxblock)(
pack.IntType(256, 'big').pack(aux_work['hash']).encode('hex'),
bitcoin_data.aux_pow_type.pack(dict(
merkle_tx=dict(
tx=new_gentx,
block_hash=header_hash,
merkle_link=merkle_link,
),
merkle_link=bitcoin_data.calculate_merkle_link(hashes, index),
parent_block_header=header,
)).encode('hex'),
)
@df.addCallback
def _(result, aux_work=aux_work):
if result != (pow_hash <= aux_work['target']):
print >>sys.stderr, 'Merged block submittal result: %s Expected: %s' % (result, pow_hash <= aux_work['target'])
else:
print 'Merged block submittal result: %s' % (result,)
@df.addErrback
def _(err):
log.err(err, 'Error submitting merged block:')
except:
log.err(None, 'Error while processing merged mining POW:')
if pow_hash <= share_info['bits'].target and header_hash not in received_header_hashes:
last_txout_nonce = pack.IntType(8*self.COINBASE_NONCE_LENGTH).unpack(coinbase_nonce)
share = get_share(header, last_txout_nonce)
print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
user,
p2pool_data.format_hash(share.hash),
p2pool_data.format_hash(share.previous_hash),
time.time() - getwork_time,
' DEAD ON ARRIVAL' if not on_time else '',
)
self.my_share_hashes.add(share.hash)
if not on_time:
self.my_doa_share_hashes.add(share.hash)
self.node.tracker.add(share)
self.node.set_best_share()
try:
if (pow_hash <= header['bits'].target or p2pool.DEBUG) and self.node.p2p_node is not None:
self.node.p2p_node.broadcast_share(share.hash)
except:
log.err(None, 'Error forwarding block solution:')
self.share_received.happened(bitcoin_data.target_to_average_attempts(share.target), not on_time, share.hash)
if pow_hash > target:
print 'Worker %s submitted share with hash > target:' % (user,)
print ' Hash: %56x' % (pow_hash,)
print ' Target: %56x' % (target,)
elif header_hash in received_header_hashes:
print >>sys.stderr, 'Worker %s submitted share more than once!' % (user,)
else:
received_header_hashes.add(header_hash)
self.pseudoshare_received.happened(bitcoin_data.target_to_average_attempts(target), not on_time, user)
self.recent_shares_ts_work.append((time.time(), bitcoin_data.target_to_average_attempts(target)))
while len(self.recent_shares_ts_work) > 50:
self.recent_shares_ts_work.pop(0)
self.local_rate_monitor.add_datum(dict(work=bitcoin_data.target_to_average_attempts(target), dead=not on_time, user=user, share_target=share_info['bits'].target))
self.local_addr_rate_monitor.add_datum(dict(work=bitcoin_data.target_to_average_attempts(target), pubkey_hash=pubkey_hash))
return on_time