mirror of
https://git.wownero.com/lza_menace/wownero-python.git
synced 2024-08-15 03:25:25 +00:00
108 lines
4 KiB
Python
108 lines
4 KiB
Python
from binascii import hexlify, unhexlify
|
|
import re
|
|
import struct
|
|
from sha3 import keccak_256
|
|
|
|
from . import base58
|
|
from . import numbers
|
|
|
|
_ADDR_REGEX = re.compile(r'^[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{95}$')
|
|
_IADDR_REGEX = re.compile(r'^[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{106}$')
|
|
|
|
|
|
class Address(object):
|
|
_valid_netbytes = (18, 53)
|
|
# NOTE: _valid_netbytes order is (real, testnet)
|
|
|
|
def __init__(self, address):
|
|
address = str(address)
|
|
if not _ADDR_REGEX.match(address):
|
|
raise ValueError("Address must be 95 characters long base58-encoded string, "
|
|
"is {addr} ({len} chars length)".format(addr=address, len=len(address)))
|
|
self._decode(address)
|
|
|
|
def _decode(self, address):
|
|
self._decoded = bytearray(unhexlify(base58.decode(address)))
|
|
checksum = self._decoded[-4:]
|
|
if checksum != keccak_256(self._decoded[:-4]).digest()[:4]:
|
|
raise ValueError("Invalid checksum")
|
|
if self._decoded[0] not in self._valid_netbytes:
|
|
raise ValueError("Invalid address netbyte {nb}. Allowed values are: {allowed}".format(
|
|
nb=self._decoded[0],
|
|
allowed=", ".join(map(lambda b: '%02x' % b, self._valid_netbytes))))
|
|
|
|
def is_testnet(self):
|
|
return self._decoded[0] == self._valid_netbytes[1]
|
|
|
|
def get_view_key(self):
|
|
return hexlify(self._decoded[33:65]).decode()
|
|
|
|
def get_spend_key(self):
|
|
return hexlify(self._decoded[1:33]).decode()
|
|
|
|
def with_payment_id(self, payment_id=0):
|
|
payment_id = numbers.payment_id_as_int(payment_id)
|
|
if payment_id.bit_length() > 64:
|
|
raise TypeError("Integrated payment_id cannot have more than 64 bits, "
|
|
"has %d" % payment_id.bit_length())
|
|
prefix = 54 if self.is_testnet() else 19
|
|
data = bytearray([prefix]) + self._decoded[1:65] + struct.pack('>Q', payment_id)
|
|
checksum = bytearray(keccak_256(data).digest()[:4])
|
|
return IntegratedAddress(base58.encode(hexlify(data + checksum)))
|
|
|
|
def __repr__(self):
|
|
return base58.encode(hexlify(self._decoded))
|
|
|
|
def __eq__(self, other):
|
|
if isinstance(other, Address):
|
|
return str(self) == str(other)
|
|
if isinstance(other, str):
|
|
return str(self) == other
|
|
return super()
|
|
|
|
|
|
class SubAddress(Address):
|
|
_valid_netbytes = (42, 63)
|
|
|
|
def with_payment_id(self):
|
|
raise TypeError("SubAddress cannot be integrated with payment ID")
|
|
|
|
|
|
class IntegratedAddress(Address):
|
|
_valid_netbytes = (19, 54)
|
|
|
|
def __init__(self, address):
|
|
address = str(address)
|
|
if not _IADDR_REGEX.match(address):
|
|
raise ValueError("Integrated address must be 106 characters long base58-encoded string, "
|
|
"is {addr} ({len} chars length)".format(addr=address, len=len(address)))
|
|
self._decode(address)
|
|
|
|
def get_payment_id(self):
|
|
return hexlify(self._decoded[65:-4]).decode()
|
|
|
|
def get_base_address(self):
|
|
prefix = 53 if self.is_testnet() else 18
|
|
data = bytearray([prefix]) + self._decoded[1:65]
|
|
checksum = keccak_256(data).digest()[:4]
|
|
return Address(base58.encode(hexlify(data + checksum)))
|
|
|
|
|
|
def address(addr):
|
|
addr = str(addr)
|
|
if _ADDR_REGEX.match(addr):
|
|
netbyte = bytearray(unhexlify(base58.decode(addr)))[0]
|
|
if netbyte in Address._valid_netbytes:
|
|
return Address(addr)
|
|
elif netbyte in SubAddress._valid_netbytes:
|
|
return SubAddress(addr)
|
|
raise ValueError("Invalid address netbyte {nb}. Allowed values are: {allowed}".format(
|
|
nb=hexlify(chr(netbyte)),
|
|
allowed=", ".join(map(
|
|
lambda b: '%02x' % b,
|
|
sorted(Address._valid_netbytes + SubAddress._valid_netbytes)))))
|
|
elif _IADDR_REGEX.match(addr):
|
|
return IntegratedAddress(addr)
|
|
raise ValueError("Address must be either 95 or 106 characters long base58-encoded string, "
|
|
"is {addr} ({len} chars length)".format(addr=address, len=len(address)))
|