import hashlib
import os
import random
+import sys
import time
from twisted.python import log
# shares
-# type:
-# 2: share1a
-# 3: share1b
-
share_type = pack.ComposedType([
('type', pack.VarIntType()),
('contents', pack.VarStrType()),
])
def load_share(share, net, peer):
- if share['type'] in [0, 1]:
+ if share['type'] in [0, 1, 2, 3]:
from p2pool import p2p
raise p2p.PeerMisbehavingError('sent an obsolete share')
- elif share['type'] == 2:
+ elif share['type'] == 4:
return Share(net, peer, other_txs=None, **Share.share1a_type.unpack(share['contents']))
- elif share['type'] == 3:
+ elif share['type'] == 5:
share1b = Share.share1b_type.unpack(share['contents'])
- return Share(net, peer, merkle_branch=bitcoin_data.calculate_merkle_branch([0] + [bitcoin_data.hash256(bitcoin_data.tx_type.pack(x)) for x in share1b['other_txs']], 0), **share1b)
+ return Share(net, peer, merkle_link=bitcoin_data.calculate_merkle_link([0] + [bitcoin_data.hash256(bitcoin_data.tx_type.pack(x)) for x in share1b['other_txs']], 0), **share1b)
+ elif share['type'] == NewShare.VERSION:
+ return NewShare(net, peer, NewShare.share_type.unpack(share['contents']))
else:
raise ValueError('unknown share type: %r' % (share['type'],))
('pubkey_hash', pack.IntType(160)),
('subsidy', pack.IntType(64)),
('donation', pack.IntType(16)),
- ('stale_info', pack.IntType(8)), # 0 nothing, 253 orphan, 254 doa
+ ('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()),
])
share_info_type = pack.ComposedType([
('share_data', share_data_type),
+ ('far_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
('max_bits', bitcoin_data.FloatingIntegerType()),
('bits', bitcoin_data.FloatingIntegerType()),
('timestamp', pack.IntType(32)),
])
- share1a_type = pack.ComposedType([
+ share_common_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.VarIntType()),
+ ])),
('hash_link', hash_link_type),
- ('merkle_branch', bitcoin_data.merkle_branch_type),
])
-
+ share1a_type = pack.ComposedType([
+ ('common', share_common_type),
+ ('merkle_link', pack.ComposedType([
+ ('branch', pack.ListType(pack.IntType(256))),
+ ('index', pack.IntType(0)), # it will always be 0
+ ])),
+ ])
share1b_type = pack.ComposedType([
- ('min_header', small_block_header_type),
- ('share_info', share_info_type),
- ('hash_link', hash_link_type),
+ ('common', share_common_type),
('other_txs', pack.ListType(bitcoin_data.tx_type)),
])
gentx_before_refhash = pack.VarStrType().pack(DONATION_SCRIPT) + pack.IntType(64).pack(0) + pack.VarStrType().pack('\x20' + pack.IntType(256).pack(0))[:2]
@classmethod
- def generate_transaction(cls, tracker, share_data, block_target, desired_timestamp, desired_target, net):
- previous_share = tracker.shares[share_data['previous_share_hash']] if share_data['previous_share_hash'] is not None else None
+ def generate_transaction(cls, tracker, share_data, block_target, desired_timestamp, desired_target, ref_merkle_link, desired_other_transaction_hashes, net, known_txs=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
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),
- True,
)
assert total_weight == sum(weights.itervalues()) + donation_weight, (total_weight, sum(weights.itervalues()) + donation_weight)
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, (
)) if previous_share is not None else desired_timestamp,
)
- return share_info, dict(
+ gentx = dict(
version=1,
tx_ins=[dict(
previous_output=None,
sequence=None,
script=share_data['coinbase'].ljust(2, '\x00'),
)],
- tx_outs=[dict(value=amounts[script], script=script) for script in dests if amounts[script]] + [dict(
+ tx_outs=[dict(value=amounts[script], script=script) for script in dests if amounts[script] or script == DONATION_SCRIPT] + [dict(
value=0,
- script='\x20' + pack.IntType(256).pack(bitcoin_data.hash256(cls.ref_type.pack(dict(
- identifier=net.IDENTIFIER,
- share_info=share_info,
- )))),
+ script='\x20' + cls.get_ref_hash(net, share_info, ref_merkle_link),
)],
lock_time=0,
)
+
+ def get_share(header, transactions):
+ assert transactions[0] == gentx and [bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in transactions[1:]] == desired_other_transaction_hashes
+ min_header = dict(header);del min_header['merkle_root']
+ hash_link = prefix_to_hash_link(bitcoin_data.tx_type.pack(gentx)[:-32-4], cls.gentx_before_refhash)
+ merkle_link = bitcoin_data.calculate_merkle_link([None] + desired_other_transaction_hashes, 0)
+ pow_hash = net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
+ return cls(net, None, dict(
+ min_header=min_header, share_info=share_info, hash_link=hash_link,
+ ref_merkle_link=dict(branch=[], index=0),
+ ), merkle_link=merkle_link, other_txs=transactions[1:] if pow_hash <= header['bits'].target else None)
+
+ return share_info, gentx, desired_other_transaction_hashes, get_share
- __slots__ = 'net min_header share_info hash_link merkle_branch other_txs hash share_data max_target target timestamp previous_hash new_script gentx_hash header pow_hash header_hash time_seen peer'.split(' ')
+ @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.ref_type.pack(dict(
+ identifier=net.IDENTIFIER,
+ share_info=share_info,
+ ))), ref_merkle_link))
+
+ __slots__ = 'net peer common min_header share_info hash_link merkle_link other_txs 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(' ')
- def __init__(self, net, peer, min_header, share_info, hash_link, merkle_branch, other_txs):
- if len(share_info['share_data']['coinbase']) > 100:
- raise ValueError('''coinbase too large! %i bytes''' % (len(self.share_data['coinbase']),))
+ def __init__(self, net, peer, common, merkle_link, other_txs):
+ self.net = net
+ self.peer = peer
+ self.common = common
+ self.min_header = common['min_header']
+ self.share_info = common['share_info']
+ self.hash_link = common['hash_link']
+ self.merkle_link = merkle_link
+ self.other_txs = other_txs
- if len(merkle_branch) > 16:
- raise ValueError('merkle_branch too long!')
+ if len(self.share_info['share_data']['coinbase']) > 100:
+ raise ValueError('''coinbase too large! %i bytes''' % (len(self.share_info['share_data']['coinbase']),))
- if p2pool.DEBUG and other_txs is not None and bitcoin_data.calculate_merkle_branch([0] + [bitcoin_data.hash256(bitcoin_data.tx_type.pack(x)) for x in other_txs], 0) != merkle_branch:
- raise ValueError('merkle_branch and other_txs do not match')
+ if len(merkle_link['branch']) > 16:
+ raise ValueError('merkle branch too long!')
- assert not hash_link['extra_data'], repr(hash_link['extra_data'])
+ if p2pool.DEBUG and other_txs is not None and bitcoin_data.calculate_merkle_link([0] + [bitcoin_data.hash256(bitcoin_data.tx_type.pack(x)) for x in other_txs], 0) != merkle_link:
+ raise ValueError('merkle_link and other_txs do not match')
- self.net = net
- self.peer = peer
- self.min_header = min_header
- self.share_info = share_info
- self.hash_link = hash_link
- self.merkle_branch = merkle_branch
- self.other_txs = other_txs
+ 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.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.gentx_hash = check_hash_link(
- hash_link,
- pack.IntType(256).pack(bitcoin_data.hash256(self.ref_type.pack(dict(
- identifier=net.IDENTIFIER,
- share_info=share_info,
- )))) + pack.IntType(32).pack(0),
+ self.hash_link,
+ self.get_ref_hash(net, self.share_info, common['ref_merkle_link']) + pack.IntType(32).pack(0),
self.gentx_before_refhash,
)
- merkle_root = bitcoin_data.check_merkle_branch(self.gentx_hash, 0, merkle_branch)
- self.header = dict(min_header, merkle_root=merkle_root)
+ merkle_root = bitcoin_data.check_merkle_link(self.gentx_hash, 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.header_hash = bitcoin_data.hash256(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.pow_hash > self.target:
+ from p2pool import p2p
raise p2p.PeerMisbehavingError('share PoW invalid')
if other_txs is not None and not self.pow_hash <= self.header['bits'].target:
if other_txs is None and self.pow_hash <= self.header['bits'].target:
raise ValueError('other_txs not provided when a block solution')
- self.hash = bitcoin_data.hash256(share_type.pack(self.as_share()))
+ self.new_transaction_hashes = []
# XXX eww
self.time_seen = time.time()
def __repr__(self):
return '<Share %s>' % (' '.join('%s=%r' % (k, getattr(self, k)) for k in self.__slots__),)
+ def as_share1a(self):
+ return dict(type=4, contents=self.share1a_type.pack(dict(common=self.common, merkle_link=self.merkle_link)))
+
+ def as_share1b(self):
+ return dict(type=5, contents=self.share1b_type.pack(dict(common=self.common, other_txs=self.other_txs)))
+
+ def as_share(self):
+ if not self.pow_hash <= self.header['bits'].target: # share1a
+ return self.as_share1a()
+ else:
+ return self.as_share1b()
+
def check(self, tracker):
- share_info, gentx = self.generate_transaction(tracker, self.share_info['share_data'], self.header['bits'].target, self.share_info['timestamp'], self.share_info['bits'].target, self.net)
+ if self.share_data['previous_share_hash'] is not None:
+ previous_share = tracker.items[self.share_data['previous_share_hash']]
+ if isinstance(previous_share, NewShare):
+ from p2pool import p2p
+ raise p2p.PeerMisbehavingError('''Share can't follow NewShare''')
+ share_info, gentx, other_transaction_hashes, 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.common['ref_merkle_link'], [], self.net) # ok because desired_other_transaction_hashes is only used in get_share
if share_info != self.share_info:
- raise ValueError('share difficulty invalid')
+ raise ValueError('share_info invalid')
if bitcoin_data.hash256(bitcoin_data.tx_type.pack(gentx)) != self.gentx_hash:
raise ValueError('''gentx doesn't match hash_link''')
+ return gentx # only used by as_block
- def as_share(self):
- if not self.pow_hash <= self.header['bits'].target: # share1a
- return dict(type=2, contents=self.share1a_type.pack(dict(min_header=self.min_header, share_info=self.share_info, hash_link=self.hash_link, merkle_branch=self.merkle_branch)))
- else: # share1b
- return dict(type=3, contents=self.share1b_type.pack(dict(min_header=self.min_header, share_info=self.share_info, hash_link=self.hash_link, other_txs=self.other_txs)))
+ def get_other_tx_hashes(self, tracker):
+ return []
+
+ def get_other_txs(self, tracker, known_txs):
+ return []
+
+ def get_other_txs_size(self, tracker, known_txs):
+ return 0
+
+ def get_new_txs_size(self, known_txs):
+ return 0
- def as_block(self, tracker):
+ def as_block(self, tracker, known_txs):
if self.other_txs is None:
raise ValueError('share does not contain all txs')
+ return dict(header=self.header, txs=[self.check(tracker)] + self.other_txs)
+
+class NewShare(object):
+ VERSION = 8
+
+ other_txs = None
+
+ 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 = 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()),
+ ])),
+ ('new_transaction_hashes', pack.ListType(pack.IntType(256))),
+ ('transaction_hash_refs', pack.ListType(pack.ComposedType([ # compressed by referencing previous shares' hashes
+ ('share_count', pack.VarIntType()),
+ ('tx_count', pack.VarIntType()),
+ ]))),
+ ('far_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
+ ('max_bits', bitcoin_data.FloatingIntegerType()),
+ ('bits', bitcoin_data.FloatingIntegerType()),
+ ('timestamp', pack.IntType(32)),
+ ])
+
+ 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)),
+ ])),
+ ('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('\x20' + pack.IntType(256).pack(0))[:2]
+
+ @classmethod
+ def generate_transaction(cls, tracker, share_data, block_target, desired_timestamp, desired_target, ref_merkle_link, desired_other_transaction_hashes, net, known_txs=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, (0, 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
+
+ new_transaction_hashes = []
+ new_transaction_size = 0
+ transaction_hash_refs = []
+ other_transaction_hashes = []
+
+ for tx_hash in desired_other_transaction_hashes:
+ for i, share in enumerate(tracker.get_chain(share_data['previous_share_hash'], min(height, 100))):
+ if tx_hash in share.new_transaction_hashes:
+ this = dict(share_count=i+1, tx_count=share.new_transaction_hashes.index(tx_hash))
+ break
+ else:
+ if known_txs is not None:
+ this_size = len(bitcoin_data.tx_type.pack(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 = dict(share_count=0, tx_count=len(new_transaction_hashes)-1)
+ transaction_hash_refs.append(this)
+ other_transaction_hashes.append(tx_hash)
+
+ 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,
+ )
+
+ gentx = dict(
+ version=1,
+ tx_ins=[dict(
+ previous_output=None,
+ sequence=None,
+ script=share_data['coinbase'],
+ )],
+ tx_outs=[dict(value=amounts[script], script=script) for script in dests if amounts[script] or script == DONATION_SCRIPT] + [dict(
+ value=0,
+ script='\x20' + cls.get_ref_hash(net, share_info, ref_merkle_link),
+ )],
+ lock_time=0,
+ )
+
+ def get_share(header, transactions):
+ min_header=dict(header);del min_header['merkle_root']
+ return cls(net, None, dict(
+ min_header=min_header,
+ share_info=share_info,
+ ref_merkle_link=dict(branch=[], index=0),
+ hash_link=prefix_to_hash_link(bitcoin_data.tx_type.pack(gentx)[:-32-4], cls.gentx_before_refhash),
+ merkle_link=bitcoin_data.calculate_merkle_link([None] + other_transaction_hashes, 0),
+ ))
+
+ 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.ref_type.pack(dict(
+ identifier=net.IDENTIFIER,
+ 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(' ')
+
+ def __init__(self, net, peer, contents):
+ self.net = net
+ self.peer = peer
+ 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']
- share_info, gentx = self.generate_transaction(tracker, self.share_info['share_data'], self.header['bits'].target, self.share_info['timestamp'], self.share_info['bits'].target, self.net)
- assert share_info == self.share_info
+ 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']),))
- return dict(header=self.header, txs=[gentx] + self.other_txs)
+ 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']
+
+ for x in self.share_info['transaction_hash_refs']:
+ assert x['share_count'] < 110
+ for i, x in enumerate(self.share_info['new_transaction_hashes']):
+ assert dict(share_count=0, tx_count=i) in self.share_info['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(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))
+
+ 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, self.contents))
+
+ def as_share(self):
+ return dict(type=self.VERSION, contents=self.share_type.pack(self.contents))
+
+ def check(self, tracker):
+ if self.share_data['previous_share_hash'] is not None:
+ previous_share = tracker.items[self.share_data['previous_share_hash']]
+ if isinstance(previous_share, Share):
+ if tracker.get_height(previous_share.hash) < self.net.CHAIN_LENGTH:
+ from p2pool import p2p
+ raise p2p.PeerMisbehavingError('NewShare without enough history')
+ else:
+ # Share -> NewShare 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:
+ from p2pool import p2p
+ raise p2p.PeerMisbehavingError('NewShare without enough hash power upgraded')
+
+ other_tx_hashes = [tracker.items[tracker.get_nth_parent_hash(self.hash, x['share_count'])].share_info['new_transaction_hashes'][x['tx_count']] for x in self.share_info['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'], other_tx_hashes, self.net)
+ assert other_tx_hashes2 == other_tx_hashes
+ if share_info != self.share_info:
+ raise ValueError('share_info invalid')
+ if bitcoin_data.hash256(bitcoin_data.tx_type.pack(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:
+ 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):
+ return [tracker.items[tracker.get_nth_parent_hash(self.hash, x['share_count'])].share_info['new_transaction_hashes'][x['tx_count']] for x in self.share_info['transaction_hash_refs']]
+
+ def get_other_txs(self, tracker, known_txs):
+ other_tx_hashes = self.get_other_tx_hashes(tracker)
+
+ 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 get_other_txs_size(self, tracker, known_txs):
+ other_txs = self.get_other_txs(tracker, known_txs)
+ if other_txs is None:
+ return None # not all txs present
+ size = sum(len(bitcoin_data.tx_type.pack(tx)) for tx in other_txs)
+
+ def get_new_txs_size(self, known_txs):
+ if not all(tx_hash in known_txs for tx_hash in self.share_info['new_transaction_hashes']):
+ return None # not all txs present
+ return sum(len(bitcoin_data.tx_type.pack(known_txs[tx_hash])) for tx_hash in self.share_info['new_transaction_hashes'])
+
+ 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)
+
class WeightsSkipList(forest.TrackerSkipList):
# share_count, weights, total_weight
def get_delta(self, element):
from p2pool.bitcoin import data as bitcoin_data
- share = self.tracker.shares[element]
+ share = self.tracker.items[element]
att = bitcoin_data.target_to_average_attempts(share.target)
return 1, {share.new_script: att*(65535-share.share_data['donation'])}, att*65535, att*share.share_data['donation']
def combine_deltas(self, (share_count1, weights1, total_weight1, total_donation_weight1), (share_count2, weights2, total_weight2, total_donation_weight2)):
return share_count1 + share_count2, math.add_dicts(weights1, weights2), total_weight1 + total_weight2, total_donation_weight1 + total_donation_weight2
- def initial_solution(self, start, (max_shares, desired_weight, broken_mode)):
+ def initial_solution(self, start, (max_shares, desired_weight)):
assert desired_weight % 65535 == 0, divmod(desired_weight, 65535)
return 0, None, 0, 0
- def apply_delta(self, (share_count1, weights_list, total_weight1, total_donation_weight1), (share_count2, weights2, total_weight2, total_donation_weight2), (max_shares, desired_weight, broken_mode)):
+ def apply_delta(self, (share_count1, weights_list, total_weight1, total_donation_weight1), (share_count2, weights2, total_weight2, total_donation_weight2), (max_shares, desired_weight)):
if total_weight1 + total_weight2 > desired_weight and share_count2 == 1:
assert (desired_weight - total_weight1) % 65535 == 0
script, = weights2.iterkeys()
- if broken_mode:
- new_weights = dict(script=(desired_weight - total_weight1)//65535*weights2[script]//(total_weight2//65535))
- else:
- new_weights = {script: (desired_weight - total_weight1)//65535*weights2[script]//(total_weight2//65535)}
+ new_weights = {script: (desired_weight - total_weight1)//65535*weights2[script]//(total_weight2//65535)}
return share_count1 + share_count2, (weights_list, new_weights), desired_weight, total_donation_weight1 + (desired_weight - total_weight1)//65535*total_donation_weight2//(total_weight2//65535)
return share_count1 + share_count2, (weights_list, weights2), total_weight1 + total_weight2, total_donation_weight1 + total_donation_weight2
- def judge(self, (share_count, weights_list, total_weight, total_donation_weight), (max_shares, desired_weight, broken_mode)):
+ def judge(self, (share_count, weights_list, total_weight, total_donation_weight), (max_shares, desired_weight)):
if share_count > max_shares or total_weight > desired_weight:
return 1
elif share_count == max_shares or total_weight == desired_weight:
else:
return -1
- def finalize(self, (share_count, weights_list, total_weight, total_donation_weight), (max_shares, desired_weight, broken_mode)):
+ def finalize(self, (share_count, weights_list, total_weight, total_donation_weight), (max_shares, desired_weight)):
assert share_count <= max_shares and total_weight <= desired_weight
assert share_count == max_shares or total_weight == desired_weight
return math.add_dicts(*math.flatten_linked_list(weights_list)), total_weight, total_donation_weight
class OkayTracker(forest.Tracker):
- def __init__(self, net, my_share_hashes, my_doa_share_hashes):
+ def __init__(self, net):
forest.Tracker.__init__(self, delta_type=forest.get_attributedelta_type(dict(forest.AttributeDelta.attrs,
work=lambda share: bitcoin_data.target_to_average_attempts(share.target),
min_work=lambda share: bitcoin_data.target_to_average_attempts(share.max_target),
)))
self.net = net
- self.verified = forest.Tracker(delta_type=forest.get_attributedelta_type(dict(forest.AttributeDelta.attrs,
+ self.verified = forest.SubsetTracker(delta_type=forest.get_attributedelta_type(dict(forest.AttributeDelta.attrs,
work=lambda share: bitcoin_data.target_to_average_attempts(share.target),
- my_count=lambda share: 1 if share.hash in my_share_hashes else 0,
- my_doa_count=lambda share: 1 if share.hash in my_doa_share_hashes else 0,
- my_orphan_announce_count=lambda share: 1 if share.hash in my_share_hashes and share.share_data['stale_info'] == 253 else 0,
- my_dead_announce_count=lambda share: 1 if share.hash in my_share_hashes and share.share_data['stale_info'] == 254 else 0,
- )))
- self.verified.get_nth_parent_hash = self.get_nth_parent_hash # self is a superset of self.verified
-
+ )), subset_of=self)
self.get_cumulative_weights = WeightsSkipList(self)
def attempt_verify(self, share):
- if share.hash in self.verified.shares:
+ if share.hash in self.verified.items:
return True
height, last = self.get_height_and_last(share.hash)
if height < self.net.CHAIN_LENGTH + 1 and last is not None:
self.verified.add(share)
return True
- def think(self, block_rel_height_func, previous_block, bits):
+ def think(self, block_rel_height_func, previous_block, bits, known_txs):
desired = set()
# O(len(self.heads))
else:
if last is not None:
desired.add((
- self.shares[random.choice(list(self.reverse_shares[last]))].peer,
+ self.items[random.choice(list(self.reverse[last]))].peer,
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))),
))
for bad in bads:
- assert bad not in self.verified.shares
+ assert bad not in self.verified.items
assert bad in self.heads
if p2pool.DEBUG:
print "BAD", bad
break
if head_height < self.net.CHAIN_LENGTH and last_last_hash is not None:
desired.add((
- self.shares[random.choice(list(self.verified.reverse_shares[last_hash]))].peer,
+ self.items[random.choice(list(self.verified.reverse[last_hash]))].peer,
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.shares[h].peer is None,
- self.shares[h].pow_hash <= self.shares[h].header['bits'].target, # is block solution
- (self.shares[h].header['previous_block'], self.shares[h].header['bits']) == (previous_block, bits) or self.shares[h].peer is None,
- -self.shares[h].time_seen,
+ #self.items[h].peer is None,
+ self.items[h].pow_hash <= self.items[h].header['bits'].target, # is block solution
+ (self.items[h].header['previous_block'], self.items[h].header['bits']) == (previous_block, bits) or self.items[h].peer is None,
+ self.items[h].get_other_txs(self, known_txs) is not None,
+ self.items[h].get_other_txs_size(self, known_txs) < 1000000,
+ self.items[h].get_new_txs_size(known_txs) < 50000,
+ -self.items[h].time_seen,
), h) for h in self.verified.tails.get(best_tail, []))
if p2pool.DEBUG:
print len(decorated_heads), 'heads. Top 10:'
for score, head_hash in decorated_heads[-10:]:
- print ' ', format_hash(head_hash), format_hash(self.shares[head_hash].previous_hash), score
+ print ' ', format_hash(head_hash), format_hash(self.items[head_hash].previous_hash), score
best_head_score, best = decorated_heads[-1] if decorated_heads else (None, None)
# eat away at heads
if share_hash in [head_hash for score, head_hash in decorated_heads[-5:]]:
#print 1
continue
- if self.shares[share_hash].time_seen > time.time() - 300:
+ if self.items[share_hash].time_seen > time.time() - 300:
#print 2
continue
- if share_hash not in self.verified.shares and max(self.shares[after_tail_hash].time_seen for after_tail_hash in self.reverse_shares.get(tail)) > time.time() - 120: # XXX stupid
+ if share_hash not in self.verified.items and max(self.items[after_tail_hash].time_seen for after_tail_hash in self.reverse.get(tail)) > time.time() - 120: # XXX stupid
#print 3
continue
to_remove.add(share_hash)
if not to_remove:
break
for share_hash in to_remove:
- self.remove(share_hash)
- if share_hash in self.verified.shares:
+ if share_hash in self.verified.items:
self.verified.remove(share_hash)
+ self.remove(share_hash)
#print "_________", to_remove
# drop tails
for tail, heads in self.tails.iteritems():
if min(self.get_height(head) for head in heads) < 2*self.net.CHAIN_LENGTH + 10:
continue
- for aftertail in self.reverse_shares.get(tail, set()):
- if len(self.reverse_shares[self.shares[aftertail].previous_hash]) > 1: # XXX
+ for aftertail in self.reverse.get(tail, set()):
+ if len(self.reverse[self.items[aftertail].previous_hash]) > 1: # XXX
print "raw"
continue
to_remove.add(aftertail)
# if removed from this, it must be removed from verified
#start = time.time()
for aftertail in to_remove:
- if self.shares[aftertail].previous_hash not in self.tails:
- print "erk", aftertail, self.shares[aftertail].previous_hash
+ if self.items[aftertail].previous_hash not in self.tails:
+ print "erk", aftertail, self.items[aftertail].previous_hash
continue
- self.remove(aftertail)
- if aftertail in self.verified.shares:
+ if aftertail in self.verified.items:
self.verified.remove(aftertail)
+ self.remove(aftertail)
#end = time.time()
#print "removed! %i %f" % (len(to_remove), (end - start)/len(to_remove))
if best is not None:
- best_share = self.shares[best]
+ best_share = self.items[best]
if (best_share.header['previous_block'], best_share.header['bits']) != (previous_block, bits) and best_share.header_hash != previous_block and best_share.peer is not None:
if p2pool.DEBUG:
print 'Stale detected! %x < %x' % (best_share.header['previous_block'], previous_block)
best = best_share.previous_hash
+ elif best_share.get_other_txs(self, known_txs) is None:
+ print 'Share with incomplete transactions detected! Jumping from %s to %s!' % (format_hash(best), format_hash(best_share.previous_hash))
+ best = best_share.previous_hash
+ elif best_share.get_other_txs_size(self, known_txs) > 1000000:
+ print >>sys.stderr, 'Share with too many transactions detected! Jumping from %s to %s!' % (format_hash(best), format_hash(best_share.previous_hash))
+ best = best_share.previous_hash
+ elif best_share.get_new_txs_size(known_txs) > 50000:
+ print >>sys.stderr, 'Share with too many new transactions detected! Jumping from %s to %s!' % (format_hash(best), format_hash(best_share.previous_hash))
+ 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
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
- return best, [(peer, hash) for peer, hash, ts, targ in desired if ts >= timestamp_cutoff and targ <= target_cutoff]
+ return best, [(peer, hash) for peer, hash, ts, targ in desired if ts >= timestamp_cutoff]
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
block_height = max(block_rel_height_func(share.header['previous_block']) for share in
self.verified.get_chain(end_point, self.net.CHAIN_LENGTH//16))
- return self.net.CHAIN_LENGTH, (self.verified.get_work(share_hash) - self.verified.get_work(end_point))//((0 - block_height + 1)*self.net.PARENT.BLOCK_PERIOD)
+ return self.net.CHAIN_LENGTH, self.verified.get_delta(share_hash, end_point).work//((0 - block_height + 1)*self.net.PARENT.BLOCK_PERIOD)
def get_pool_attempts_per_second(tracker, previous_share_hash, dist, min_work=False, integer=False):
assert dist >= 2
- near = tracker.shares[previous_share_hash]
- far = tracker.shares[tracker.get_nth_parent_hash(previous_share_hash, dist - 1)]
- attempts = tracker.get_work(near.hash) - tracker.get_work(far.hash) if not min_work else tracker.get_delta(near.hash).min_work - tracker.get_delta(far.hash).min_work
+ near = tracker.items[previous_share_hash]
+ far = tracker.items[tracker.get_nth_parent_hash(previous_share_hash, dist - 1)]
+ attempts = tracker.get_delta(near.hash, far.hash).work if not min_work else tracker.get_delta(near.hash, far.hash).min_work
time = near.timestamp - far.timestamp
if time <= 0:
time = 1
return attempts/time
def get_average_stale_prop(tracker, share_hash, lookbehind):
- stales = sum(1 for share in tracker.get_chain(share_hash, lookbehind) if share.share_data['stale_info'] != 0)
+ stales = sum(1 for share in tracker.get_chain(share_hash, lookbehind) if share.share_data['stale_info'] is not None)
return stales/(lookbehind + stales)
+def get_stale_counts(tracker, share_hash, lookbehind, rates=False):
+ res = {}
+ for share in tracker.get_chain(share_hash, lookbehind - 1):
+ res['good'] = res.get('good', 0) + bitcoin_data.target_to_average_attempts(share.target)
+ s = share.share_data['stale_info']
+ if s is not None:
+ res[s] = res.get(s, 0) + bitcoin_data.target_to_average_attempts(share.target)
+ if rates:
+ dt = tracker.items[share_hash].timestamp - tracker.items[tracker.get_nth_parent_hash(share_hash, lookbehind - 1)].timestamp
+ res = dict((k, v/dt) for k, v in res.iteritems())
+ return res
+
+def get_user_stale_props(tracker, share_hash, lookbehind):
+ res = {}
+ for share in tracker.get_chain(share_hash, lookbehind - 1):
+ stale, total = res.get(share.share_data['pubkey_hash'], (0, 0))
+ total += 1
+ if share.share_data['stale_info'] is not None:
+ stale += 1
+ total += 1
+ res[share.share_data['pubkey_hash']] = stale, total
+ return dict((pubkey_hash, stale/total) for pubkey_hash, (stale, total) in res.iteritems())
+
def get_expected_payouts(tracker, best_share_hash, block_target, subsidy, net):
- weights, total_weight, donation_weight = tracker.get_cumulative_weights(best_share_hash, min(tracker.get_height(best_share_hash), net.REAL_CHAIN_LENGTH), 65535*net.SPREAD*bitcoin_data.target_to_average_attempts(block_target), False)
+ weights, total_weight, donation_weight = tracker.get_cumulative_weights(best_share_hash, min(tracker.get_height(best_share_hash), net.REAL_CHAIN_LENGTH), 65535*net.SPREAD*bitcoin_data.target_to_average_attempts(block_target))
res = dict((script, subsidy*weight//total_weight) for script, weight in weights.iteritems())
res[DONATION_SCRIPT] = res.get(DONATION_SCRIPT, 0) + subsidy - sum(res.itervalues())
return res
+def get_desired_version_counts(tracker, best_share_hash, dist):
+ res = {}
+ for share in tracker.get_chain(best_share_hash, dist):
+ res[share.desired_version] = res.get(share.desired_version, 0) + bitcoin_data.target_to_average_attempts(share.target)
+ return res
+
+def get_warnings(tracker, best_share, net, bitcoind_warning, bitcoind_work_value):
+ res = []
+
+ 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 > NewShare.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())))
+
+ if bitcoind_warning is not None:
+ res.append('(from bitcoind) %s' % (bitcoind_warning,))
+
+ if time.time() > bitcoind_work_value['last_update'] + 60:
+ res.append('''LOST CONTACT WITH BITCOIND for %s! Check that it isn't frozen or dead!''' % (math.format_dt(time.time() - bitcoind_work_value['last_update']),))
+
+ return res
+
def format_hash(x):
if x is None:
return 'xxxxxxxx'
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]:
+ if raw_share['type'] in [0, 1, 2, 3, 6, 7]:
continue
share = load_share(raw_share, self.net, None)
yield 'share', share
else:
raise NotImplementedError("share type %i" % (type_id,))
except Exception:
- log.err(None, "Error while reading saved shares, continuing where left off:")
+ log.err(None, "HARMLESS error while reading saved shares, continuing where left off:")
self.known = known
self.known_desired = dict((k, (set(a), set(b))) for k, (a, b) in known.iteritems())
git://git.novaco.in / p2pool.git / blobdiff