def test_big_integer_frombytes(self):
b1 = BigInteger(8972340892734890723)
ba = b1.ToByteArray()
b2 = BigInteger.FromBytes(ba)
self.assertEqual(b1, b2)
self.assertTrue(b1.Equals(b2))
def test_big_integer_sign(self):
b1 = BigInteger(3)
b2 = BigInteger(0)
b3 = BigInteger(-4)
self.assertEqual(b1.Sign, 1)
self.assertEqual(b2.Sign, 0)
self.assertEqual(b3.Sign, -1)
c1 = BigInteger(-100)
c1_bytes = c1.ToByteArray()
c2 = BigInteger.FromBytes(c1_bytes, signed=True)
self.assertEqual(c2.Sign, -1)
c2_unsigned = BigInteger.FromBytes(c1_bytes, signed=False)
self.assertEqual(c2_unsigned.Sign, 1)
def TestBuild(script,
invoke_args,
wallet,
plist='05',
ret='05',
dynamic=False,
invoke_attrs=None,
owners=None,
snapshot=None):
properties = ContractPropertyState.HasStorage
if dynamic:
properties += ContractPropertyState.HasDynamicInvoke
if not isinstance(ret, bytearray):
ret = bytearray(binascii.unhexlify(str(ret).encode('utf-8')))
script = generate_deploy_script(script,
contract_properties=int(properties),
parameter_list=plist,
return_type=BigInteger.FromBytes(ret))
return test_deploy_and_invoke(script,
invoke_args,
wallet,
invoke_attrs=invoke_attrs,
owners=owners,
snapshot=snapshot)
def Blockchain_GetBlock(self, engine: ExecutionEngine):
data = engine.CurrentContext.EvaluationStack.Pop()
if data:
data = data.GetByteArray()
else:
return False
block = None
if len(data) <= 5:
height = BigInteger.FromBytes(data)
if Blockchain.Default() is not None:
block = Blockchain.Default().GetBlockByHeight(height)
elif height == 0:
block = Blockchain.GenesisBlock()
elif len(data) == 32:
hash = UInt256(data=data).ToBytes()
if Blockchain.Default() is not None:
block = Blockchain.Default().GetBlockByHash(hash=hash)
elif hash == Blockchain.GenesisBlock().Hash:
block = Blockchain.GenesisBlock().Header
engine.CurrentContext.EvaluationStack.PushT(StackItem.FromInterface(block))
return True
def Blockchain_GetHeader(self, engine: ExecutionEngine):
data = engine.CurrentContext.EvaluationStack.Pop().GetByteArray()
header = None
if len(data) <= 5:
height = BigInteger.FromBytes(data)
if Blockchain.Default() is not None:
header = Blockchain.Default().GetHeaderBy(height_or_hash=height)
elif height == 0:
header = Blockchain.GenesisBlock().Header
elif len(data) == 32:
hash = UInt256(data=data)
if Blockchain.Default() is not None:
header = Blockchain.Default().GetHeaderBy(height_or_hash=hash)
elif hash == Blockchain.GenesisBlock().Hash:
header = Blockchain.GenesisBlock().Header
engine.CurrentContext.EvaluationStack.PushT(StackItem.FromInterface(header))
return True
def DeserializeStackItem(reader):
stype = reader.ReadUInt8()
if stype == StackItemType.ByteArray:
return ByteArray(reader.ReadVarBytes())
elif stype == StackItemType.Boolean:
return Boolean(ord(reader.ReadByte()))
elif stype == StackItemType.Integer:
return Integer(
BigInteger.FromBytes(reader.ReadVarBytes(), signed=True))
elif stype == StackItemType.Array:
stack_item = Array()
count = reader.ReadVarInt()
while count > 0:
count -= 1
stack_item.Add(StackItem.DeserializeStackItem(reader))
return stack_item
elif stype == StackItemType.Struct:
stack_item = Struct(value=None)
count = reader.ReadVarInt()
while count > 0:
count -= 1
stack_item.Add(StackItem.DeserializeStackItem(reader))
return stack_item
elif stype == StackItemType.Map:
stack_item = Map()
count = reader.ReadVarInt()
while count > 0:
count -= 1
key = StackItem.DeserializeStackItem(reader)
val = StackItem.DeserializeStackItem(reader)
stack_item.SetItem(key, val)
return stack_item
else:
raise ValueError(
"Could not deserialize stack item with type: %s " % stype)
def __init__(self,
event_type,
event_payload,
contract_hash,
block_number,
tx_hash,
execution_success=False,
test_mode=False):
super(NotifyEvent, self).__init__(event_type, event_payload,
contract_hash, block_number, tx_hash,
execution_success, test_mode)
self.is_standard_notify = False
if self.event_payload.Type == ContractParameterType.Array and len(
self.event_payload.Value) > 0:
payload = self.event_payload.Value
plen = len(payload)
self.notify_type = payload[0].Value
empty = UInt160(data=bytearray(20))
try:
if plen == 4 and self.notify_type in [
NotifyType.TRANSFER, NotifyType.APPROVE
]:
if payload[1].Value is None:
self.addr_from = empty
logger.debug("Using contract addr from address %s " %
self.event_payload)
elif payload[1].Value is False:
logger.debug("Using contract addr from address %s " %
self.event_payload)
self.addr_from = empty
else:
self.addr_from = UInt160(data=payload[1].Value) if len(
payload[1].Value) == 20 else empty
self.addr_to = UInt160(data=payload[2].Value) if len(
payload[2].Value) == 20 else empty
self.amount = int(BigInteger.FromBytes(
payload[3].Value)) if isinstance(
payload[3].Value,
(bytes, bytearray)) else int(payload[3].Value)
self.is_standard_notify = True
elif self.notify_type == NotifyType.REFUND and plen >= 3: # Might have more arguments
self.addr_to = UInt160(data=payload[1].Value) if len(
payload[1].Value) == 20 else empty
self.amount = int(BigInteger.FromBytes(
payload[2].Value)) if isinstance(
payload[2].Value,
(bytes, bytearray)) else int(payload[2].Value)
self.addr_from = self.contract_hash
self.is_standard_notify = True
elif self.notify_type == NotifyType.MINT and plen == 3:
self.addr_to = UInt160(data=payload[1].Value) if len(
payload[1].Value) == 20 else empty
self.amount = int(BigInteger.FromBytes(
payload[2].Value)) if isinstance(
payload[2].Value,
(bytes, bytearray)) else int(payload[2].Value)
self.addr_from = self.contract_hash
self.is_standard_notify = True
except Exception as e:
logger.debug("Could not determine notify event: %s %s" %
(e, self.event_payload))
elif self.event_payload.Type == ContractParameterType.String:
self.notify_type = self.event_payload.Value