('contents', pack.VarStrType()),
])
-def load_share(share, net, peer):
- if share['type'] in [0, 1, 2, 3, 4, 5, 6, 7, 8]:
+def load_share(share, net, peer_addr):
+ assert peer_addr is None or isinstance(peer_addr, tuple)
+ if share['type'] < Share.VERSION:
from p2pool import p2p
raise p2p.PeerMisbehavingError('sent an obsolete share')
elif share['type'] == Share.VERSION:
- return Share(net, peer, Share.share_type.unpack(share['contents']))
+ return Share(net, peer_addr, Share.share_type.unpack(share['contents']))
else:
raise ValueError('unknown share type: %r' % (share['type'],))
DONATION_SCRIPT = '4104ffd03de44a6e11b9917f3a29f9443283d9871c9d743ef30d5eddcd37094b64d1b3d8090496b53256786bf5c82932ec23c3b74d9f05a6f95a8b5529352656664bac'.decode('hex')
class Share(object):
- VERSION = 9
+ VERSION = 13
+ VOTING_VERSION = 13
SUCCESSOR = None
- other_txs = None
-
small_block_header_type = pack.ComposedType([
('version', pack.VarIntType()),
('previous_block', 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)),
])
share_type = pack.ComposedType([
('branch', pack.ListType(pack.IntType(256))),
('index', pack.IntType(0)),
])),
- ('last_txout_nonce', pack.IntType(32)),
+ ('last_txout_nonce', pack.IntType(64)),
('hash_link', hash_link_type),
('merkle_link', pack.ComposedType([
('branch', pack.ListType(pack.IntType(256))),
('share_info', share_info_type),
])
- gentx_before_refhash = pack.VarStrType().pack(DONATION_SCRIPT) + pack.IntType(64).pack(0) + pack.VarStrType().pack('\x24' + pack.IntType(256).pack(0) + pack.IntType(32).pack(0))[:2]
+ 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):
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//10, pre_target3)))
-
- weights, total_weight, donation_weight = tracker.get_cumulative_weights(share_data['previous_share_hash'],
- min(height, net.REAL_CHAIN_LENGTH),
- 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'])
- 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
+ bits = bitcoin_data.FloatingInteger.from_target_upper_bound(math.clip(desired_target, (pre_target3//30, pre_target3)))
new_transaction_hashes = []
new_transaction_size = 0
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'])
+ 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
+
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),
)) 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,
)
gentx = dict(
)],
tx_outs=[dict(value=amounts[script], script=script) for script in dests if amounts[script] or script == DONATION_SCRIPT] + [dict(
value=0,
- script='\x24' + cls.get_ref_hash(net, share_info, ref_merkle_link) + pack.IntType(32).pack(last_txout_nonce),
+ 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']
- return cls(net, None, dict(
+ 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_type.pack(gentx)[:-32-4-4], cls.gentx_before_refhash),
+ hash_link=prefix_to_hash_link(bitcoin_data.tx_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
share_info=share_info,
))), ref_merkle_link))
- __slots__ = 'net peer 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'.split(' ')
+ __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, contents):
+ def __init__(self, net, peer_addr, contents):
self.net = net
- self.peer = peer
+ self.peer_addr = peer_addr
self.contents = contents
self.min_header = contents['min_header']
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():
self.gentx_hash = check_hash_link(
self.hash_link,
- self.get_ref_hash(net, self.share_info, contents['ref_merkle_link']) + pack.IntType(32).pack(self.contents['last_txout_nonce']) + pack.IntType(32).pack(0),
+ 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.time_seen = time.time()
def __repr__(self):
- return 'Share' + repr((self.net, self.peer, self.contents))
+ 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))
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 is not None:
- return True, 'Block-stale detected! %x < %x' % (self.header['previous_block'], previous_block)
+ 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:
- if self.time_seen == 0: # ignore if loaded from ShareStore
- return True, 'not all txs present'
+ pass
else:
all_txs_size = sum(bitcoin_data.tx_type.packed_size(tx) for tx in other_txs)
if all_txs_size > 1000000:
else:
if last is not None:
desired.add((
- self.items[random.choice(list(self.reverse[last]))].peer,
+ self.items[random.choice(list(self.reverse[last]))].peer_addr,
last,
max(x.timestamp for x in self.get_chain(head, min(head_height, 5))),
min(x.target for x in self.get_chain(head, min(head_height, 5))),
break
if head_height < self.net.CHAIN_LENGTH and last_last_hash is not None:
desired.add((
- self.items[random.choice(list(self.verified.reverse[last_hash]))].peer,
+ self.items[random.choice(list(self.verified.reverse[last_hash]))].peer_addr,
last_last_hash,
max(x.timestamp for x in self.get_chain(head, min(head_height, 5))),
min(x.target for x in self.get_chain(head, min(head_height, 5))),
# decide best verified head
decorated_heads = sorted(((
self.verified.get_work(self.verified.get_nth_parent_hash(h, min(5, self.verified.get_height(h)))),
- #self.items[h].peer is None,
+ #self.items[h].peer_addr is None,
-self.items[h].should_punish_reason(previous_block, bits, self, known_txs)[0],
-self.items[h].time_seen,
), h) for h in self.verified.tails.get(best_tail, []))
best = best_share.previous_hash
timestamp_cutoff = min(int(time.time()), best_share.timestamp) - 3600
- target_cutoff = 2**256//(self.net.SHARE_PERIOD*best_tail_score[1] + 1) * 2 if best_tail_score[1] is not None else 2**256-1
+ target_cutoff = int(2**256//(self.net.SHARE_PERIOD*best_tail_score[1] + 1) * 2 + .5) if best_tail_score[1] is not None else 2**256-1
else:
timestamp_cutoff = int(time.time()) - 24*60*60
target_cutoff = 2**256-1
if p2pool.DEBUG:
print 'Desire %i shares. Cutoff: %s old diff>%.2f' % (len(desired), math.format_dt(time.time() - timestamp_cutoff), bitcoin_data.target_to_difficulty(target_cutoff))
- for peer, hash, ts, targ in desired:
- print ' ', '%s:%i' % peer.addr if peer is not None else None, format_hash(hash), math.format_dt(time.time() - ts), bitcoin_data.target_to_difficulty(targ), ts >= timestamp_cutoff, targ <= target_cutoff
+ for peer_addr, hash, ts, targ in desired:
+ print ' ', None if peer_addr is None else '%s:%i' % peer_addr, format_hash(hash), math.format_dt(time.time() - ts), bitcoin_data.target_to_difficulty(targ), ts >= timestamp_cutoff, targ <= target_cutoff
- return best, [(peer, hash) for peer, hash, ts, targ in desired if ts >= timestamp_cutoff], decorated_heads
+ return best, [(peer_addr, hash) for peer_addr, hash, ts, targ in desired if ts >= timestamp_cutoff], decorated_heads
def score(self, share_hash, block_rel_height_func):
# returns approximate lower bound on chain's hashrate in the last self.net.CHAIN_LENGTH*15//16*self.net.SHARE_PERIOD time
desired_version_counts = get_desired_version_counts(tracker, best_share,
min(net.CHAIN_LENGTH, 60*60//net.SHARE_PERIOD, tracker.get_height(best_share)))
majority_desired_version = max(desired_version_counts, key=lambda k: desired_version_counts[k])
- if majority_desired_version > Share.VERSION and desired_version_counts[majority_desired_version] > sum(desired_version_counts.itervalues())/2:
+ if majority_desired_version > (Share.SUCCESSOR if Share.SUCCESSOR is not None else Share).VOTING_VERSION and desired_version_counts[majority_desired_version] > sum(desired_version_counts.itervalues())/2:
res.append('A MAJORITY OF SHARES CONTAIN A VOTE FOR AN UNSUPPORTED SHARE IMPLEMENTATION! (v%i with %i%% support)\n'
'An upgrade is likely necessary. Check http://p2pool.forre.st/ for more information.' % (
majority_desired_version, 100*desired_version_counts[majority_desired_version]/sum(desired_version_counts.itervalues())))
return '%08x' % (x % 2**32)
class ShareStore(object):
- def __init__(self, prefix, net):
- self.filename = prefix
+ def __init__(self, prefix, net, share_cb, verified_hash_cb):
self.dirname = os.path.dirname(os.path.abspath(prefix))
self.filename = os.path.basename(os.path.abspath(prefix))
self.net = net
- self.known = None # will be filename -> set of share hashes, set of verified hashes
- self.known_desired = None
-
- def get_shares(self):
- if self.known is not None:
- raise AssertionError()
+
known = {}
filenames, next = self.get_filenames_and_next()
for filename in filenames:
pass
elif type_id == 2:
verified_hash = int(data_hex, 16)
- yield 'verified_hash', verified_hash
+ verified_hash_cb(verified_hash)
verified_hashes.add(verified_hash)
elif type_id == 5:
raw_share = share_type.unpack(data_hex.decode('hex'))
- if raw_share['type'] in [0, 1, 2, 3, 4, 5, 6, 7, 8]:
+ if raw_share['type'] < Share.VERSION:
continue
share = load_share(raw_share, self.net, None)
- yield 'share', share
+ share_cb(share)
share_hashes.add(share.hash)
else:
raise NotImplementedError("share type %i" % (type_id,))
except Exception:
log.err(None, "HARMLESS error while reading saved shares, continuing where left off:")
- self.known = known
+
+ self.known = known # filename -> (set of share hashes, set of verified hashes)
self.known_desired = dict((k, (set(a), set(b))) for k, (a, b) in known.iteritems())
def _add_line(self, line):
git://git.novaco.in / p2pool.git / blobdiff