def intrinsic_gas_used(self):
num_zero_bytes = str_to_bytes(self.data).count(ascii_chr(0))
num_non_zero_bytes = len(self.data) - num_zero_bytes
return (opcodes.GTXCOST
# + (0 if self.to else opcodes.CREATE[3])
+ opcodes.GTXDATAZERO * num_zero_bytes +
opcodes.GTXDATANONZERO * num_non_zero_bytes)
def sync_child_chain(self):
self.current_block = self.client.get_current_block_num()
while self.synced_block < self.current_block:
block_number = self.synced_block
block = self.client.get_block(self.synced_block)
self.db.put(bytes(block_number), utils.str_to_bytes(block))
print("Synced %s" % self.synced_block)
self.synced_block += 1
print("Syncing complete!")
def _encode_node(self, node, put_in_db=True):
if node == BLANK_NODE:
return BLANK_NODE
# assert isinstance(node, list)
rlpnode = rlp_encode(node)
if len(rlpnode) < 32:
return node
hashkey = utils.sha3(rlpnode)
if put_in_db:
self.db.put(hashkey, str_to_bytes(rlpnode))
return hashkey
def test_transaction(filename, testname, testdata):
try:
rlpdata = decode_hex(testdata["rlp"][2:])
o = {}
tx = rlp.decode(rlpdata, transactions.Transaction)
blknum = int(testdata["blocknumber"])
# if blknum >= config.default_config["HOMESTEAD_FORK_BLKNUM"]:
# tx.check_low_s_homestead()
assert config_fork_specific_validation(konfig, blknum, tx)
assert tx.startgas >= tx.intrinsic_gas_used
if tx.sender == null_address:
assert tx.value == 0 and tx.gasprice == 0 and tx.nonce == 0
o["sender"] = tx.sender
o["transaction"] = {
"data": '0x' * (len(tx.data) > 0) + encode_hex(tx.data),
"gasLimit": str(tx.startgas),
"gasPrice": str(tx.gasprice),
"nonce": str(tx.nonce),
"r":
'0x' + encode_hex(utils.zpad(utils.int_to_big_endian(tx.r), 32)),
"s":
'0x' + encode_hex(utils.zpad(utils.int_to_big_endian(tx.s), 32)),
"v": str(tx.v),
"value": str(tx.value),
"to": encode_hex(tx.to),
}
except Exception as e:
tx = None
sys.stderr.write(str(e))
if 'transaction' not in testdata: # expected to fail
# print(tx.to_dict(), testdata)
assert tx is None
else:
assert set(o['transaction'].keys()) == set(
testdata.get("transaction", dict()).keys())
o.get("transaction", None) == testdata.get("transaction", None)
assert str_to_bytes(encode_hex(o.get("sender", ''))) == str_to_bytes(
testdata.get("sender", ''))
def _to_dict(self, node):
"""convert (key, value) stored in this and the descendant nodes
to dict items.
:param node: node in form of list, or BLANK_NODE
.. note::
Here key is in full form, rather than key of the individual node
"""
if node == BLANK_NODE:
return {}
node_type = self._get_node_type(node)
if is_key_value_type(node_type):
nibbles = without_terminator(unpack_to_nibbles(node[0]))
key = b'+'.join([to_string(x) for x in nibbles])
if node_type == NODE_TYPE_EXTENSION:
sub_dict = self._to_dict(self._decode_to_node(node[1]))
else:
sub_dict = {to_string(NIBBLE_TERMINATOR): node[1]}
# prepend key of this node to the keys of children
res = {}
for sub_key, sub_value in sub_dict.items():
full_key = (key + b'+' + sub_key).strip(b'+')
res[full_key] = sub_value
return res
elif node_type == NODE_TYPE_BRANCH:
res = {}
for i in range(16):
sub_dict = self._to_dict(self._decode_to_node(node[i]))
for sub_key, sub_value in sub_dict.items():
full_key = (
str_to_bytes(
str(i)) +
b'+' +
sub_key).strip(b'+')
res[full_key] = sub_value
if node[16]:
res[to_string(NIBBLE_TERMINATOR)] = node[-1]
return res
def _iter_branch(self, node):
"""yield (key, value) stored in this and the descendant nodes
:param node: node in form of list, or BLANK_NODE
.. note::
Here key is in full form, rather than key of the individual node
"""
if node == BLANK_NODE:
raise StopIteration
node_type = self._get_node_type(node)
if is_key_value_type(node_type):
nibbles = without_terminator(unpack_to_nibbles(node[0]))
key = b'+'.join([to_string(x) for x in nibbles])
if node_type == NODE_TYPE_EXTENSION:
sub_tree = self._iter_branch(self._decode_to_node(node[1]))
else:
sub_tree = [(to_string(NIBBLE_TERMINATOR), node[1])]
# prepend key of this node to the keys of children
for sub_key, sub_value in sub_tree:
full_key = (key + b'+' + sub_key).strip(b'+')
yield (full_key, sub_value)
elif node_type == NODE_TYPE_BRANCH:
for i in range(16):
sub_tree = self._iter_branch(self._decode_to_node(node[i]))
for sub_key, sub_value in sub_tree:
full_key = (
str_to_bytes(
str(i)) +
b'+' +
sub_key).strip(b'+')
yield (full_key, sub_value)
if node[16]:
yield (to_string(NIBBLE_TERMINATOR), node[-1])
def bytesify(li):
return [str_to_bytes(x) if isinstance(x, str) else x for x in li]
def hashPersonalMessage(message_hex):
message = bytearray.fromhex(u.remove_0x_head(message_hex))
prefix = u.str_to_bytes(
chr(25) + 'Ethereum Signed Message:\n' + str(len(message)))
return u.sha3_256(prefix + decode_hex(u.remove_0x_head(message_hex)))
def update(self, k, v):
h = utils.sha3(k)
self.db.put(h, utils.str_to_bytes(k))
self.trie.update(h, v)
def _update_root_hash(self):
val = rlp_encode(self.root_node)
key = utils.sha3(val)
self.db.put(key, str_to_bytes(val))
self._root_hash = key
def __hash__(self):
return utils.big_endian_to_int(str_to_bytes(self.__repr__()))