def write_access_list(w: HashWriter,
access_list: list[EthereumAccessList]) -> None:
payload_length = sum(access_list_item_length(i) for i in access_list)
rlp.write_header(w, payload_length, rlp.LIST_HEADER_BYTE)
for item in access_list:
address_bytes = bytes_from_address(item.address)
address_length = rlp.length(address_bytes)
keys_length = rlp.length(item.storage_keys)
rlp.write_header(w, address_length + keys_length, rlp.LIST_HEADER_BYTE)
rlp.write(w, address_bytes)
rlp.write(w, item.storage_keys)
def get_total_length(msg: EthereumSignTx, data_total: int) -> int:
length = 0
if msg.tx_type is not None:
length += rlp.length(msg.tx_type)
fields: tuple[rlp.RLPItem, ...] = (
msg.nonce,
msg.gas_price,
msg.gas_limit,
bytes_from_address(msg.to),
msg.value,
msg.chain_id,
0,
0,
)
for field in fields:
length += rlp.length(field)
length += rlp.header_length(data_total, msg.data_initial_chunk)
length += data_total
return length
def get_total_length(msg: EthereumSignTxEIP1559, data_total: int) -> int:
length = 0
fields: tuple[rlp.RLPItem, ...] = (
msg.nonce,
msg.gas_limit,
bytes_from_address(msg.to),
msg.value,
msg.chain_id,
msg.max_gas_fee,
msg.max_priority_fee,
)
for field in fields:
length += rlp.length(field)
length += rlp.header_length(data_total, msg.data_initial_chunk)
length += data_total
length += access_list_length(msg.access_list)
return length
def access_list_item_length(item: EthereumAccessList) -> int:
address_length = rlp.length(bytes_from_address(item.address))
keys_length = rlp.length(item.storage_keys)
return (rlp.header_length(address_length + keys_length) + address_length +
keys_length)
def test_rlp_length(self):
for i, o in self.vectors:
length = rlp.length(i)
self.assertEqual(length, len(o) // 2)