X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=p2pool%2Fdata.py;h=7643e61a4af04bc2296e44f9790272c31b50dc08;hb=541fa38d384428337da22f5115ae8ce92ed3f8e2;hp=a6221b6201d90cfe05ca7be952572c1a5aef648f;hpb=f18f7630d63032fac36fc596114d39fa7ac0253a;p=p2pool.git diff --git a/p2pool/data.py b/p2pool/data.py index a6221b6..7643e61 100644 --- a/p2pool/data.py +++ b/p2pool/data.py @@ -40,24 +40,17 @@ share_type = pack.ComposedType([ ]) def load_share(share, net, peer): - if share['type'] in [0, 1, 2, 3]: + if share['type'] in [0, 1, 2, 3, 4, 5, 6, 7, 8]: from p2pool import p2p raise p2p.PeerMisbehavingError('sent an obsolete share') - elif share['type'] == 4: - return Share(net, peer, other_txs=None, **Share.share1a_type.unpack(share['contents'])) - elif share['type'] == 5: - share1b = Share.share1b_type.unpack(share['contents']) - 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'])) - elif share['type'] == NewNewShare.VERSION: - return NewNewShare(net, peer, NewNewShare.share_type.unpack(share['contents'])) + elif share['type'] == Share.VERSION: + return Share(net, peer, Share.share_type.unpack(share['contents'])) else: raise ValueError('unknown share type: %r' % (share['type'],)) DONATION_SCRIPT = '4104ffd03de44a6e11b9917f3a29f9443283d9871c9d743ef30d5eddcd37094b64d1b3d8090496b53256786bf5c82932ec23c3b74d9f05a6f95a8b5529352656664bac'.decode('hex') -class NewNewShare(object): +class Share(object): VERSION = 9 SUCCESSOR = None @@ -83,10 +76,7 @@ class NewNewShare(object): ('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()), - ]))), + ('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()), @@ -116,7 +106,7 @@ class NewNewShare(object): 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] @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, last_txout_nonce=0): + 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']) @@ -152,11 +142,15 @@ class NewNewShare(object): 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 + 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]) @@ -164,10 +158,19 @@ class NewNewShare(object): 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) + 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) + 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), @@ -195,7 +198,7 @@ class NewNewShare(object): lock_time=0, ) - def get_share(header, transactions): + 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=min_header, @@ -243,10 +246,12 @@ class NewNewShare(object): 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'] + 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, @@ -277,547 +282,8 @@ class NewNewShare(object): def as_share(self): return dict(type=self.VERSION, contents=self.share_type.pack(self.contents)) - 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, 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, 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 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): - if tracker.get_height(self.hash) <= max(x['share_count'] for x in self.share_info['transaction_hash_refs']): - return None - 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 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 is not None: - return True, 'Block-stale detected! %x < %x' % (self.header['previous_block'], previous_block) - - 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: - return True, 'not all txs present' - else: - all_txs_size = sum(bitcoin_data.tx_type.packed_size(tx) for tx in other_txs) - if all_txs_size > 1000000: - 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 > 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) - -class Share(object): - VERSION = 7 - SUCCESSOR = NewNewShare - - small_block_header_type = pack.ComposedType([ - ('version', pack.VarIntType()), # XXX must be constrained to 32 bits - ('previous_block', pack.PossiblyNoneType(0, pack.IntType(256))), - ('timestamp', pack.IntType(32)), - ('bits', bitcoin_data.FloatingIntegerType()), - ('nonce', pack.IntType(32)), - ]) - - share_data_type = 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()), - ]) - - 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)), - ]) - - 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), - ]) - 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([ - ('common', share_common_type), - ('other_txs', pack.ListType(bitcoin_data.tx_type)), - ]) - - 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, (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 - - 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, - ) - - 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] 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): - 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 - - @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, 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(self.share_info['share_data']['coinbase']) > 100: - raise ValueError('''coinbase too large! %i bytes''' % (len(self.share_info['share_data']['coinbase']),)) - - if len(merkle_link['branch']) > 16: - raise ValueError('merkle branch too long!') - - 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') - - 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.gentx_hash = check_hash_link( - 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_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.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: - raise ValueError('other_txs provided when not a block solution') - if other_txs is None and self.pow_hash <= self.header['bits'].target: - raise ValueError('other_txs not provided when a block solution') - - self.new_transaction_hashes = [] - - # XXX eww - self.time_seen = time.time() - - def __repr__(self): - return '' % (' '.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): - 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__)) - - 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_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 get_other_tx_hashes(self, tracker): - return [] - - 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.pow_hash <= self.header['bits'].target: - return -1, 'block solution' - - return False, None - - 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 - SUCCESSOR = NewNewShare - - 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, (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 - - 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 = bitcoin_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 = 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'] - - 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'] - - 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 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 @@ -838,9 +304,9 @@ class NewShare(object): 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, x['share_count'])].share_info['new_transaction_hashes'][x['tx_count']] for x in self.share_info['transaction_hash_refs']] + 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'], other_tx_hashes, self.net) + 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') @@ -853,9 +319,12 @@ class NewShare(object): return gentx # only used by as_block def get_other_tx_hashes(self, tracker): - if tracker.get_height(self.hash) <= max(x['share_count'] for x in self.share_info['transaction_hash_refs']): + 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 - 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']] + 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) @@ -876,7 +345,8 @@ class NewShare(object): other_txs = self._get_other_txs(tracker, known_txs) if other_txs is None: - return True, 'not all txs present' + if self.time_seen == 0: # ignore if loaded from ShareStore + return True, 'not all txs present' else: all_txs_size = sum(bitcoin_data.tx_type.packed_size(tx) for tx in other_txs) if all_txs_size > 1000000: @@ -1064,7 +534,7 @@ class OkayTracker(forest.Tracker): 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_delta(share_hash, end_point).work//((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 @@ -1123,7 +593,7 @@ def get_warnings(tracker, best_share, net, bitcoind_warning, bitcoind_work_value 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 > NewNewShare.VERSION and desired_version_counts[majority_desired_version] > sum(desired_version_counts.itervalues())/2: + if majority_desired_version > 10 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()))) @@ -1173,7 +643,7 @@ class ShareStore(object): 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, 6, 7]: + if raw_share['type'] in [0, 1, 2, 3, 4, 5, 6, 7, 8]: continue share = load_share(raw_share, self.net, None) yield 'share', share