async def submitblock(block_hex_or_obj, **kwargs):
if isinstance(block_hex_or_obj, str):
block_bin = unhexlify(block_hex_or_obj.encode())
# Block
mined_block = Block(binary=block_bin[:80])
if mined_block.previous_hash != builder.best_block.hash:
return 'PreviousHash don\'t match.'
previous_block = builder.get_block(mined_block.previous_hash)
mined_block.height = previous_block.height + 1
mined_block.flag = int(kwargs['password'])
# tx length
storage_flag = int.from_bytes(block_bin[80:81], 'little')
if storage_flag < 0xfd:
tx_len = storage_flag
pos = 81
elif storage_flag == 0xfd:
tx_len = int.from_bytes(block_bin[81:83], 'little')
pos = 83
elif storage_flag == 0xfe:
tx_len = int.from_bytes(block_bin[81:85], 'little')
pos = 85
else: # == 0xff
tx_len = int.from_bytes(block_bin[81:89], 'little')
pos = 89
if F_HEAVY_DEBUG:
logging.debug("RpcSubmit block: pos={}, tx_len={}".format(
pos, tx_len))
# correct txs
while len(block_bin) > pos:
tx = TX()
tx.b = block_bin
tx.deserialize(first_pos=pos, f_raise=False)
if tx.version != __chain_version__:
return 'tx_ver do not match [{}!={}]'.format(
tx.version, __chain_version__)
pos += len(tx.b)
mined_block.txs.append(
tx_builder.get_tx(txhash=tx.hash, default=tx))
# check
if tx_len != len(mined_block.txs):
return 'Do not match txlen [{}!={}]'.format(
tx_len, len(mined_block.txs))
if pos != len(block_bin):
return 'Do not match pos [{}!={}]'.format(pos, len(block_bin))
elif isinstance(block_hex_or_obj, Block):
mined_block = block_hex_or_obj
previous_block = builder.get_block(mined_block.previous_hash)
mined_block.height = previous_block.height + 1
mined_block.flag = int(kwargs['password'])
else:
return 'Unknown input? -> {}'.format(block_hex_or_obj)
mined_block.update_pow()
if mined_block.pow_check():
confirmed_generating_block(mined_block)
return None # accepted
else:
return 'not satisfied work.'
async def getwork(*args, **kwargs):
# https://en.bitcoin.it/wiki/Getwork
if len(args) == 0:
now = int(time() - V.BLOCK_GENESIS_TIME)
for block in getwork_cashe.values():
if block.previous_hash != builder.best_block.hash:
continue
if now - block.time < 10:
mining_block = block
break
else:
mining_block = await get_mining_block(**kwargs)
getwork_cashe[mining_block.merkleroot] = mining_block
mining_block.bits2target()
# Pre-processed SHA-2 input chunks
data = mining_block.b # 80 bytes
data += unhexlify(b'800000000000000000000000000000000000000000000000'
b'000000000000000000000000000000000000000000000280'
) # 48+80=128bytes
new_data = b''
for i in range(0, 128, 4):
new_data += data[i:i + 4][::-1]
if extra_target:
return {
"data": hexlify(new_data).decode(),
"target": hexlify(extra_target.to_bytes(32, 'big')).decode()
}
else:
return {
"data": hexlify(new_data).decode(),
"target": hexlify(mining_block.target_hash).decode()
}
else:
data = unhexlify(args[0].encode())
new_data = b''
for i in range(0, 128, 4):
new_data += data[i:i + 4][::-1]
block = Block(binary=new_data[:80])
if block.previous_hash != builder.best_block.hash:
return 'PreviousHash don\'t match.'
if block.merkleroot in getwork_cashe:
block.txs.extend(getwork_cashe[block.merkleroot].txs)
result = await submitblock(block, **kwargs)
if result is None:
return True
elif extra_target and block.pow_check(extra_target=extra_target):
return True
else:
logging.debug("GetWorkReject by \"{}\"".format(result))
return result
else:
logging.debug("GetWorkReject by \"Not found merkleroot.\"")
return 'Not found merkleroot.'
def fill_newblock_info(data):
new_block = Block(binary=data['block'])
logging.debug("Fill newblock={}".format(hexlify(new_block.hash).decode()))
proof = TX(binary=data['proof'])
new_block.txs.append(proof)
new_block.flag = data['block_flag']
proof.signature = data['sign']
# Check the block is correct info
if not new_block.pow_check():
raise BlockChainError('Proof of work is not satisfied.')
my_block = builder.get_block(new_block.hash)
if my_block:
raise BlockChainError('Already inserted block {}'.format(my_block))
before_block = builder.get_block(new_block.previous_hash)
if before_block is None:
logging.debug("Cannot find beforeBlock {}, try to ask outside node."
.format(hexlify(new_block.previous_hash).decode()))
# not found beforeBlock, need to check other node have the the block
new_block.inner_score *= 0.70 # unknown previousBlock, score down
before_block = make_block_by_node(blockhash=new_block.previous_hash)
if not new_insert_block(before_block, time_check=True):
# require time_check, it was generated only a few seconds ago
# print([block for block in builder.chain.values()])
raise BlockChainError('Failed insert beforeBlock {}'.format(before_block))
new_height = before_block.height + 1
proof.height = new_height
new_block.height = new_height
# Append general txs
for txhash in data['txs'][1:]:
tx = tx_builder.get_tx(txhash)
if tx is None:
new_block.inner_score *= 0.75 # unknown tx, score down
logging.debug("Unknown tx, try to download.")
r = ask_node(cmd=DirectCmd.TX_BY_HASH, data={'txhash': txhash}, f_continue_asking=True)
if isinstance(r, str):
raise BlockChainError('Failed unknown tx download "{}"'.format(r))
tx = TX(binary=r['tx'])
tx.signature = r['sign']
check_tx(tx, include_block=None)
tx_builder.put_unconfirmed(tx)
logging.debug("Success unknown tx download {}".format(tx))
tx.height = new_height
new_block.txs.append(tx)
return new_block
def fill_newblock_info(data):
new_block = Block(binary=data['block'])
proof = TX(binary=data['proof'])
new_block.txs.append(proof)
new_block.flag = data['block_flag']
proof.signature = data['sign']
# Check the block is correct info
if not new_block.pow_check():
raise BlockChainError('Proof of work is not satisfied.')
if builder.get_block(new_block.hash):
raise BlockChainError('Already inserted block.')
before_block = builder.get_block(new_block.previous_hash)
if before_block is None:
raise BlockChainError('Not found beforeBlock {}.'.format(
hexlify(new_block.previous_hash).decode()))
new_height = before_block.height + 1
proof.height = new_height
new_block.height = new_height
# Append general txs
for txhash in data['txs'][1:]:
tx = tx_builder.get_tx(txhash)
if tx is None:
new_block.inner_score *= 0.75 # unknown tx, score down
logging.debug("Unknown tx, try to download.")
r = ask_node(cmd=DirectCmd.TX_BY_HASH,
data={'txhash': txhash},
f_continue_asking=True)
if isinstance(r, str):
raise BlockChainError(
'Failed unknown tx download "{}"'.format(r))
tx = TX(binary=r['tx'])
tx.signature = r['sign']
check_tx(tx, include_block=None)
tx_builder.put_unconfirmed(tx)
logging.debug("Success unknown tx download {}".format(tx))
tx.height = new_height
new_block.txs.append(tx)
return new_block