def deserialize_unsigned(self, reader: serialization.BinaryReader) -> None:
self.version = reader.read_uint32()
self.prev_hash = reader.read_serializable(types.UInt256)
self.merkle_root = reader.read_serializable(types.UInt256)
self.timestamp = reader.read_uint64()
self.index = reader.read_uint32()
self.next_consensus = reader.read_serializable(types.UInt160)
def deserialize(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream.
Args:
reader: instance.
Raises:
ValueError: if the content count of the block is zero, or if there is a duplicate transaction in the list,
or if the merkle root does not included the calculated root.
"""
super(Block, self).deserialize(reader)
content_count = reader.read_var_int(max=self.MAX_CONTENTS_PER_BLOCK)
if content_count == 0:
raise ValueError("Deserialization error - no contents")
self.consensus_data = reader.read_serializable(payloads.ConsensusData)
tx_count = content_count - 1
for _ in range(tx_count):
self.transactions.append(reader.read_serializable(payloads.Transaction))
if len(set(self.transactions)) != tx_count:
raise ValueError("Deserialization error - block contains duplicate transaction")
hashes = [t.hash() for t in self.transactions]
if Block.calculate_merkle_root(self.consensus_data.hash(), hashes) != self.merkle_root:
raise ValueError("Deserialization error - merkle root mismatch")
def deserialize(self, reader: serialization.BinaryReader) -> None:
self.original_tx_id = reader.read_serializable(types.UInt256)
self.gas_for_response = reader.read_uint64()
self.url = reader.read_var_string()
self.filter = reader.read_var_string()
self.callback_contract = reader.read_serializable(types.UInt160)
self.callback_method = reader.read_var_string()
self.user_data = reader.read_var_bytes()
def deserialize(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream.
Args:
reader: instance.
"""
self.header = reader.read_serializable(Header)
self.hashes = reader.read_serializable_list(types.UInt256, max=0xFFFF)
def deserialize(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream.
Args:
reader: instance.
"""
self.hash_start = reader.read_serializable(types.UInt256)
self.count = reader.read_int16()
def deserialize_unsigned(self, reader: serialization.BinaryReader) -> None:
self.category = reader.read_var_string(32)
self.valid_block_start = reader.read_uint32()
self.valid_block_end = reader.read_uint32()
if self.valid_block_start >= self.valid_block_end:
raise ValueError(
"Deserialization error - valid_block_starts is bigger than valid_block_end"
)
self.sender = reader.read_serializable(types.UInt160)
self.data = reader.read_var_bytes(message.Message.PAYLOAD_MAX_SIZE)
def deserialize(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream.
Args:
reader: instance.
"""
self.header = reader.read_serializable(Header)
self.tx_count = reader.read_var_int(max=0xFFFF)
self.hashes = reader.read_serializable_list(types.UInt256, max=self.tx_count)
self.flags = reader.read_var_bytes(max=(max(self.tx_count, 1) + 7) // 8)
def deserialize(self, reader: serialization.BinaryReader) -> None:
length = reader.read_var_int()
if self._validators is None:
self._validators = {}
else:
self._validators.clear()
for _ in range(length):
public_key = reader.read_serializable(
cryptography.ECPoint) # type: ignore
self._validators.update(
{public_key: vm.BigInteger(reader.read_var_bytes())})
def deserialize_unsigned(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream excluding the validation byte + witness.
Args:
reader: instance.
"""
self.version = reader.read_uint32()
self.prev_hash = reader.read_serializable(types.UInt256)
self.block_index = reader.read_uint32()
self.validator_index = reader.read_uint16()
self.data = reader.read_var_bytes()
def deserialize(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream.
Args:
reader: instance.
"""
self.hash = reader.read_serializable(types.UInt160)
self.method = reader.read_var_string(32)
self.parameters_count = reader.read_uint16()
self.has_return_value = bool(reader.read_uint8())
self.call_flags = contracts.CallFlags(reader.read_uint8())
def _deserialize_signers(reader: serialization.BinaryReader, max_count: int) -> List[payloads.Signer]:
count = reader.read_var_int(max_count)
if count == 0:
raise ValueError("Deserialization error - signers can't be empty")
values: List[payloads.Signer] = []
for i in range(0, count):
signer = reader.read_serializable(payloads.Signer)
if signer in values:
raise ValueError("Deserialization error - duplicate signer")
values.append(signer)
return values
def deserialize(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream.
Args:
reader: instance.
Raises:
ValueError: if the validation byte is not 1
"""
self.deserialize_unsigned(reader)
if reader.read_uint8() != 1:
raise ValueError("Deserialization error - validation byte not 1")
self.witness = reader.read_serializable(payloads.Witness)
def deserialize(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream.
Args:
reader: instance.
Raises:
ValueError: if no witnesses are found.
"""
self.deserialize_unsigned(reader)
witness_obj_count = reader.read_uint8()
if witness_obj_count != 1:
raise ValueError(f"Deserialization error - Witness object count is {witness_obj_count} must be 1")
self.witness = reader.read_serializable(payloads.Witness)
def deserialize(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream.
Args:
reader: instance.
"""
self.account = reader.read_serializable(types.UInt160)
self.scope = payloads.WitnessScope(reader.read_uint8())
if payloads.WitnessScope.CUSTOM_CONTRACTS in self.scope:
self.allowed_contracts = reader.read_serializable_list(
types.UInt160)
if payloads.WitnessScope.CUSTOM_GROUPS in self.scope:
self.allowed_groups = reader.read_serializable_list(
cryptography.EllipticCurve.ECPoint)
def _deserialize_signers(reader: serialization.BinaryReader,
max_count: int) -> List[payloads.Signer]:
count = reader.read_var_int(max_count)
if count == 0:
raise ValueError("Deserialization error - signers can't be empty")
values: List[payloads.Signer] = []
for i in range(0, count):
signer = reader.read_serializable(payloads.Signer)
if i > 0 and signer.scope == payloads.WitnessScope.FEE_ONLY:
raise ValueError(
"Deserialization error - only the first signer can be fee only"
)
if signer in values:
raise ValueError("Deserialization error - duplicate signer")
values.append(signer)
return values
def deserialize(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream.
Args:
reader: instance.
"""
self.magic = reader.read_uint32()
self.compiler = reader.read_bytes(32).decode('utf-8')
self.version = Version.deserialize_from_bytes(reader.read_bytes(16))
self.script_hash = reader.read_serializable(types.UInt160)
self.checksum = reader.read_bytes(4)
if self.checksum != self.compute_checksum():
raise ValueError("Deserialization error - invalid checksum")
self.script = reader.read_var_bytes()
if self.script_hash != self.compute_script_hash():
raise ValueError("Deserialization error - invalid script_hash")
def deserialize(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream.
Args:
reader: instance.
"""
self.account = reader.read_serializable(types.UInt160)
self.scope = payloads.WitnessScope(reader.read_uint8())
if payloads.WitnessScope.GLOBAL in self.scope and self.scope != payloads.WitnessScope.GLOBAL:
raise ValueError("Deserialization error - invalid scope. GLOBAL scope not allowed with other scope types")
if payloads.WitnessScope.CUSTOM_CONTRACTS in self.scope:
self.allowed_contracts = reader.read_serializable_list(types.UInt160)
if payloads.WitnessScope.CUSTOM_GROUPS in self.scope:
self.allowed_groups = reader.read_serializable_list(cryptography.ECPoint, # type: ignore
max=self.MAX_SUB_ITEMS)
def deserialize_unsigned(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the unsigned data part of the object from a binary stream.
Args:
reader: instance.
Raises:
ValueError: if the valid_block_start exceeds the valid_block_end field.
"""
self.category = reader.read_var_string(32)
self.valid_block_start = reader.read_uint32()
self.valid_block_end = reader.read_uint32()
if self.valid_block_start >= self.valid_block_end:
raise ValueError(
"Deserialization error - valid_block_start is bigger than valid_block_end"
)
self.sender = reader.read_serializable(types.UInt160)
self.data = reader.read_var_bytes(message.Message.PAYLOAD_MAX_SIZE)
def deserialize(self, reader: serialization.BinaryReader) -> None:
"""
Deserialize the object from a binary stream.
Args:
reader: instance.
Raises:
ValueError: if the content count of the block is zero, or if there is a duplicate transaction in the list,
or if the merkle root does not included the calculated root.
"""
self.header = reader.read_serializable(Header)
self.transactions = reader.read_serializable_list(payloads.Transaction, max=0xFFFF)
if len(set(self.transactions)) != len(self.transactions):
raise ValueError("Deserialization error - block contains duplicate transaction")
hashes = [t.hash() for t in self.transactions]
if crypto.MerkleTree.compute_root(hashes) != self.header.merkle_root:
raise ValueError("Deserialization error - merkle root mismatch")
def deserialize_unsigned(self, reader: serialization.BinaryReader) -> None:
self.version = reader.read_uint8()
if self.version > 0:
raise ValueError("Deserialization error - invalid version")
self.nonce = reader.read_uint32()
self.sender = reader.read_serializable(types.UInt160)
self.system_fee = reader.read_int64()
if self.system_fee < 0:
raise ValueError("Deserialization error - negative system fee")
self.network_fee = reader.read_int64()
if self.network_fee < 0:
raise ValueError("Deserialization error - negative network fee")
# Impossible overflow, only applicable to the C# implementation where they use longs
# if (self.system_fee + self.network_fee < self.system_fee):
# raise ValueError("Deserialization error - overflow")
self.valid_until_block = reader.read_uint32()
self.attributes = reader.read_serializable_list(TransactionAttribute)
self.cosigners = reader.read_serializable_list(payloads.Cosigner)
self.script = reader.read_var_bytes(max=65535)
if len(self.script) == 0:
raise ValueError("Deserialization error - invalid script length 0")
def deserialize(self, reader: serialization.BinaryReader) -> None:
self.header = reader.read_serializable(Header)
self.hashes = reader.read_serializable_list(types.UInt256, max=0xFFFF)
def deserialize(self, reader: serialization.BinaryReader) -> None:
super(_NeoTokenStorageState, self).deserialize(reader)
self.vote_to = reader.read_serializable(
cryptography.ECPoint) # type: ignore
self.balance_height = reader.read_uint32()
def deserialize(self, reader: serialization.BinaryReader) -> None:
super(TrimmedBlock, self).deserialize(reader)
self.hashes = reader.read_serializable_list(types.UInt256)
if len(self.hashes) > 0:
self.consensus_data = reader.read_serializable(payloads.ConsensusData)
def deserialize(self, reader: serialization.BinaryReader) -> None:
self.owner = reader.read_serializable(types.UInt160)
self.name = reader.read_var_string()
def deserialize(self, reader: serialization.BinaryReader) -> None:
super(NameState, self).deserialize(reader)
self.expiration = reader.read_uint32()
self.admin = reader.read_serializable(types.UInt160)
def deserialize(self, reader: serialization.BinaryReader) -> None:
self.hash = reader.read_serializable(types.UInt160)
self.method = reader.read_var_string(32)
self.parameters_count = reader.read_uint16()
self.has_return_value = bool(reader.read_uint8())
self.call_flags = contracts.CallFlags(reader.read_uint8())
def deserialize(self, reader: BinaryReader) -> None:
self.script = reader.read_var_bytes()
self.manifest = reader.read_serializable(manifest.ContractManifest)
def deserialize(self, reader: serialization.BinaryReader) -> None:
self.id = reader.read_int32()
self.nef = reader.read_serializable(contracts.NEF)
self.manifest = reader.read_serializable(contracts.ContractManifest)
self.update_counter = reader.read_uint16()
self.hash = reader.read_serializable(types.UInt160)
def deserialize(self, reader: serialization.BinaryReader) -> None:
self.deserialize_unsigned(reader)
if reader.read_uint8() != 1:
raise ValueError("Deserialization error - check byte incorrect")
self.witness = reader.read_serializable(payloads.Witness)
def deserialize(self, reader: serialization.BinaryReader) -> None:
self.contract = reader.read_serializable(types.UInt160)
self.key = reader.read_bytes_with_grouping(group_size=16)
