Example #1
0
        def got_response(header, user, coinbase_nonce):
            assert len(coinbase_nonce) == self.COINBASE_NONCE_LENGTH
            new_packed_gentx = (
                packed_gentx[: -self.COINBASE_NONCE_LENGTH - 4] + coinbase_nonce + packed_gentx[-4:]
                if coinbase_nonce != "\0" * self.COINBASE_NONCE_LENGTH
                else packed_gentx
            )
            new_gentx = (
                bitcoin_data.tx_type.unpack(new_packed_gentx)
                if coinbase_nonce != "\0" * self.COINBASE_NONCE_LENGTH
                else gentx
            )

            header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
            pow_hash = self.node.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
            try:
                if pow_hash <= header["bits"].target or p2pool.DEBUG:
                    helper.submit_block(
                        dict(header=header, txs=[new_gentx] + other_transactions),
                        False,
                        self.node.factory,
                        self.node.bitcoind,
                        self.node.bitcoind_work,
                        self.node.net,
                    )
                    if pow_hash <= header["bits"].target:
                        print
                        print "GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x" % (
                            self.node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX,
                            header_hash,
                        )
                        print
            except:
                log.err(None, "Error while processing potential block:")

            user, _, _, _ = self.get_user_details(user)
            assert header["previous_block"] == ba["previous_block"]
            assert header["merkle_root"] == bitcoin_data.check_merkle_link(
                bitcoin_data.hash256(new_packed_gentx), merkle_link
            )
            assert header["bits"] == ba["bits"]
            # Check momentum using midhash (who knows why it is called that) and birthday values
            midhash = hashlib.sha256(hashlib.sha256(bitcoin_data.block_header_type.pack(header)[:80]).digest()).digest()
            # print 'MIDHASH: {0}'.format(midhash.encode('hex'))
            # print 'A: {0}'.format(header['birthdayA'])
            # print 'B: {0}'.format(header['birthdayB'])
            momentumc = Rewardcoin_momentum.checkMomentum(midhash, header["birthdayA"], header["birthdayB"])
            # print momentumc
            if momentumc == False:
                print "Invalid Momentum from Client!"
                return False

            on_time = self.new_work_event.times == lp_count

            for aux_work, index, hashes in mm_later:
                try:
                    if pow_hash <= aux_work["target"] or p2pool.DEBUG:
                        df = deferral.retry("Error submitting merged block: (will retry)", 10, 10)(
                            aux_work["merged_proxy"].rpc_getauxblock
                        )(
                            pack.IntType(256, "big").pack(aux_work["hash"]).encode("hex"),
                            bitcoin_data.aux_pow_type.pack(
                                dict(
                                    merkle_tx=dict(tx=new_gentx, block_hash=header_hash, merkle_link=merkle_link),
                                    merkle_link=bitcoin_data.calculate_merkle_link(hashes, index),
                                    parent_block_header=header,
                                )
                            ).encode("hex"),
                        )

                        @df.addCallback
                        def _(result, aux_work=aux_work):
                            if result != (pow_hash <= aux_work["target"]):
                                print >> sys.stderr, "Merged block submittal result: %s Expected: %s" % (
                                    result,
                                    pow_hash <= aux_work["target"],
                                )
                            else:
                                print "Merged block submittal result: %s" % (result,)

                        @df.addErrback
                        def _(err):
                            log.err(err, "Error submitting merged block:")

                except:
                    log.err(None, "Error while processing merged mining POW:")

            if pow_hash <= share_info["bits"].target and header_hash not in received_header_hashes:
                last_txout_nonce = pack.IntType(8 * self.COINBASE_NONCE_LENGTH).unpack(coinbase_nonce)
                share = get_share(header, last_txout_nonce)

                print "GOT SHARE! %s %s prev %s age %.2fs%s" % (
                    user,
                    p2pool_data.format_hash(share.hash),
                    p2pool_data.format_hash(share.previous_hash),
                    time.time() - getwork_time,
                    " DEAD ON ARRIVAL" if not on_time else "",
                )
                self.my_share_hashes.add(share.hash)
                if not on_time:
                    self.my_doa_share_hashes.add(share.hash)

                self.node.tracker.add(share)
                self.node.set_best_share()

                try:
                    if (pow_hash <= header["bits"].target or p2pool.DEBUG) and self.node.p2p_node is not None:
                        self.node.p2p_node.broadcast_share(share.hash)
                except:
                    log.err(None, "Error forwarding block solution:")

                self.share_received.happened(
                    bitcoin_data.target_to_average_attempts(share.target), not on_time, share.hash
                )

            if pow_hash > target:
                print "Worker %s submitted share with hash > target:" % (user,)
                print "    Hash:   %56x" % (pow_hash,)
                print "    Target: %56x" % (target,)
            elif header_hash in received_header_hashes:
                print >> sys.stderr, "Worker %s submitted share more than once!" % (user,)
            else:
                received_header_hashes.add(header_hash)

                self.pseudoshare_received.happened(bitcoin_data.target_to_average_attempts(target), not on_time, user)
                self.recent_shares_ts_work.append((time.time(), bitcoin_data.target_to_average_attempts(target)))
                while len(self.recent_shares_ts_work) > 50:
                    self.recent_shares_ts_work.pop(0)
                self.local_rate_monitor.add_datum(
                    dict(
                        work=bitcoin_data.target_to_average_attempts(target),
                        dead=not on_time,
                        user=user,
                        share_target=share_info["bits"].target,
                    )
                )
                self.local_addr_rate_monitor.add_datum(
                    dict(work=bitcoin_data.target_to_average_attempts(target), pubkey_hash=pubkey_hash)
                )

            return on_time
Example #2
0
    def __init__(self, net, peer_addr, contents, skip_momentum=False):
        self.net = net
        self.peer_addr = peer_addr
        self.contents = contents
        
        self.min_header = contents['min_header']
        self.share_info = contents['share_info']
        self.hash_link = contents['hash_link']
        self.merkle_link = contents['merkle_link']
        
        if not (2 <= len(self.share_info['share_data']['coinbase']) <= 100):
            raise ValueError('''bad coinbase size! %i bytes''' % (len(self.share_info['share_data']['coinbase']),))
        
        if len(self.merkle_link['branch']) > 16:
            raise ValueError('merkle branch too long!')
        
        assert not self.hash_link['extra_data'], repr(self.hash_link['extra_data'])
        
        self.share_data = self.share_info['share_data']
        self.max_target = self.share_info['max_bits'].target
        self.target = self.share_info['bits'].target
        self.timestamp = self.share_info['timestamp']
        self.previous_hash = self.share_data['previous_share_hash']
        self.new_script = bitcoin_data.pubkey_hash_to_script2(self.share_data['pubkey_hash'])
        self.desired_version = self.share_data['desired_version']
        self.absheight = self.share_info['absheight']
        self.abswork = self.share_info['abswork']
        
        n = set()
        for share_count, tx_count in self.iter_transaction_hash_refs():
            assert share_count < 110
            if share_count == 0:
                n.add(tx_count)
        assert n == set(range(len(self.share_info['new_transaction_hashes'])))
        
        self.gentx_hash = check_hash_link(
            self.hash_link,
            self.get_ref_hash(net, self.share_info, contents['ref_merkle_link']) + pack.IntType(64).pack(self.contents['last_txout_nonce']) + pack.IntType(32).pack(0),
            self.gentx_before_refhash,
        )
        merkle_root = bitcoin_data.check_merkle_link(self.gentx_hash, self.merkle_link)
        self.header = dict(self.min_header, merkle_root=merkle_root)
        self.pow_hash = net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(self.header))
        self.hash = self.header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(self.header))
        
        midhash = hashlib.sha256(hashlib.sha256(bitcoin_data.block_header_type.pack(self.header)[:80]).digest()).digest()
		
        #print 'MIDHASH: {0}'.format(midhash.encode('hex'))
        #print 'A: {0}'.format(self.header['birthdayA'])
        #print 'B: {0}'.format(self.header['birthdayB'])
        
        if self.target > net.MAX_TARGET:
            from p2pool import p2p
            raise p2p.PeerMisbehavingError('share target invalid')
        
        if self.pow_hash > self.target:
            from p2pool import p2p
            raise p2p.PeerMisbehavingError('share PoW invalid')
        if not skip_momentum:
            if Rewardcoin_momentum.checkMomentum(midhash, self.header['birthdayA'], self.header['birthdayB']) == False:
                from p2pool import p2p
                raise p2p.PeerMisbehavingError('share momentum invalid')
        
        self.new_transaction_hashes = self.share_info['new_transaction_hashes']
        
        # XXX eww
        self.time_seen = time.time()