def FromJson(jsn, isMultiSig=True):
try:
parsed = json.loads(jsn)
if parsed['type'] == 'Neo.Core.ContractTransaction':
verifiable = ContractTransaction()
ms = MemoryStream(binascii.unhexlify(parsed['hex']))
r = BinaryReader(ms)
verifiable.DeserializeUnsigned(r)
context = ContractParametersContext(verifiable,
isMultiSig=isMultiSig)
for key, value in parsed['items'].items():
if "0x" in key:
key = key[2:]
key = key.encode()
parameterbytes = []
for pt in value['parameters']:
if pt['type'] == 'Signature':
parameterbytes.append(0)
contract = Contract.Create(value['script'], parameterbytes,
key)
context.ContextItems[key] = ContextItem(contract)
if 'signatures' in value:
context.ContextItems[key].Signatures = value[
'signatures']
return context
else:
raise ("Unsupported transaction type in JSON")
except Exception as e:
logger.error(
"Failed to import ContractParametersContext from JSON: {}".
format(e))
def SplitUnspentCoin(wallet, args, prompt_passwd=True):
"""
example ``wallet split Ab8RGQEWetkhVqXjPHeGN9LJdbhaFLyUXz neo 1 100``
this would split the second unspent neo vin into 100 vouts
:param wallet:
:param args (list): A list of arguments as [Address, asset type, unspent index, divisions]
:return: bool
"""
try:
addr = wallet.ToScriptHash(args[0])
asset = get_asset_id(wallet, args[1])
index = int(args[2])
divisions = int(args[3])
except Exception as e:
logger.info("Invalid arguments specified: %s " % e)
return None
try:
unspentItem = wallet.FindUnspentCoinsByAsset(asset,
from_addr=addr)[index]
except Exception as e:
logger.info(
"Could not find unspent item for asset with index %s %s : %s" %
(asset, index, e))
return None
outputs = split_to_vouts(asset, addr, unspentItem.Output.Value, divisions)
contract_tx = ContractTransaction(outputs=outputs,
inputs=[unspentItem.Reference])
ctx = ContractParametersContext(contract_tx)
wallet.Sign(ctx)
print("Splitting: %s " % json.dumps(contract_tx.ToJson(), indent=4))
if prompt_passwd:
passwd = prompt("[Password]> ", is_password=True)
if not wallet.ValidatePassword(passwd):
print("incorrect password")
return None
if ctx.Completed:
contract_tx.scripts = ctx.GetScripts()
relayed = NodeLeader.Instance().Relay(contract_tx)
if relayed:
wallet.SaveTransaction(contract_tx)
print("Relayed Tx: %s " % contract_tx.Hash.ToString())
return contract_tx
else:
print("Could not relay tx %s " % contract_tx.Hash.ToString())
return None
def _generate_tx(self):
wallet = self.GetWallet1()
output = TransactionOutput(AssetId=Blockchain.SystemShare().Hash, Value=Fixed8.One(),
script_hash=LeaderTestCase.wallet_1_script_hash)
contract_tx = ContractTransaction(outputs=[output])
wallet.MakeTransaction(contract_tx)
ctx = ContractParametersContext(contract_tx)
wallet.Sign(ctx)
contract_tx.scripts = ctx.GetScripts()
return contract_tx
def _generate_tx(self):
wallet = self.GetWallet1()
output = TransactionOutput(AssetId=Blockchain.SystemShare().Hash, Value=Fixed8.One(),
script_hash=LeaderTestCase.wallet_1_script_hash)
contract_tx = ContractTransaction(outputs=[output])
wallet.MakeTransaction(contract_tx)
ctx = ContractParametersContext(contract_tx)
wallet.Sign(ctx)
contract_tx.scripts = ctx.GetScripts()
return contract_tx
def test_9_send_neo_tx(self):
wallet = self.GetWallet1()
tx = ContractTransaction()
tx.outputs = [TransactionOutput(Blockchain.SystemShare().Hash, Fixed8.FromDecimal(10.0), self.import_watch_addr)]
tx = wallet.MakeTransaction(tx)
cpc = ContractParametersContext(tx)
wallet.Sign(cpc)
tx.scripts = cpc.GetScripts()
result = NodeLeader.Instance().Relay(tx)
self.assertEqual(result, True)
def test_9_send_neo_tx(self):
wallet = self.GetWallet1()
tx = ContractTransaction()
tx.outputs = [TransactionOutput(Blockchain.SystemShare().Hash, Fixed8.FromDecimal(10.0), self.import_watch_addr)]
tx = wallet.MakeTransaction(tx)
cpc = ContractParametersContext(tx)
wallet.Sign(cpc)
tx.scripts = cpc.GetScripts()
result = NodeLeader.Instance().Relay(tx)
self.assertEqual(result, True)
def construct_tx():
assetId=get_asset_id(asset_type)
scripthash_to=ToScriptHash(address_to)
scripthash_from=ToScriptHash(address_from)
f8amount_change = Fixed8.TryParse(change, require_positive=True)
f8amount = Fixed8.TryParse(amount, require_positive=True)
preHash=UInt256(data=binascii.unhexlify(hex_reverse(input_txid)))
input_0=TransactionInput(prevHash=preHash,prevIndex=preIndex)
output_0 = TransactionOutput(AssetId=assetId, Value=f8amount_change, script_hash=scripthash_from)
output_1 = TransactionOutput(AssetId=assetId, Value=f8amount, script_hash=scripthash_to)
data=hex_reverse(scripthash_from.ToString())
tx = ContractTransaction(outputs=[output_0,output_1],inputs=[input_0])
tx.Attributes=[TransactionAttribute(usage=TransactionAttributeUsage.Script, data=bytearray.fromhex(data))]
return tx
def parse_send_many_params(self, params):
if type(params[0]) is not list:
raise JsonRpcError(-32602, "Invalid params")
if len(params) not in [1, 2, 3]:
raise JsonRpcError(-32602, "Invalid params")
output = []
for info in params[0]:
asset = get_asset_id(self.wallet, info['asset'])
if not type(asset) is UInt256:
raise JsonRpcError(-32602, "Invalid params")
address = info["address"]
try:
address = self.wallet.ToScriptHash(address)
except Exception:
raise JsonRpcError(-32602, "Invalid params")
amount = Fixed8.TryParse(info["value"], require_positive=True)
if not amount or float(info["value"]) == 0:
raise JsonRpcError(-32602, "Invalid params")
tx_output = TransactionOutput(AssetId=asset,
Value=amount,
script_hash=address)
output.append(tx_output)
contract_tx = ContractTransaction(outputs=output)
fee = Fixed8.TryParse(params[1]) if len(params) >= 2 else Fixed8.Zero()
if fee < Fixed8.Zero():
raise JsonRpcError(-32602, "Invalid params")
change_addr_sh = None
if len(params) >= 3:
change_addr = params[2]
try:
change_addr_sh = self.wallet.ToScriptHash(change_addr)
except Exception:
raise JsonRpcError(-32602, "Invalid params")
return contract_tx, fee, change_addr_sh
def _generate_tx(self, amount):
wallet = self.GetWallet1()
output = TransactionOutput(
AssetId=Blockchain.SystemShare().Hash,
Value=amount,
script_hash=LeaderTestCase.wallet_1_script_hash)
contract_tx = ContractTransaction(outputs=[output])
try:
wallet.MakeTransaction(contract_tx)
except ValueError:
pass
ctx = ContractParametersContext(contract_tx)
wallet.Sign(ctx)
contract_tx.scripts = ctx.GetScripts()
return contract_tx
def send_to_address(self, params):
asset, address, amount, fee = self.parse_send_params(params)
standard_contract = self.wallet.GetStandardAddress()
signer_contract = self.wallet.GetContract(standard_contract)
output = TransactionOutput(AssetId=asset,
Value=amount,
script_hash=address)
contract_tx = ContractTransaction(outputs=[output])
tx = self.wallet.MakeTransaction(tx=contract_tx,
change_address=None,
fee=fee)
if tx is None:
raise JsonRpcError(-300, "Insufficient funds")
data = standard_contract.Data
tx.Attributes = [
TransactionAttribute(usage=TransactionAttributeUsage.Script,
data=data)
]
context = ContractParametersContext(
tx, isMultiSig=signer_contract.IsMultiSigContract)
self.wallet.Sign(context)
if context.Completed:
tx.scripts = context.GetScripts()
NodeLeader.Instance().Relay(tx)
return tx.ToJson()
else:
return context.ToJson()
def send_neo(wallet, address_from, address_to, amount):
assetId = None
assetId = Blockchain.Default().SystemShare().Hash
scripthash_to = wallet.ToScriptHash(address_to)
scripthash_from = wallet.ToScriptHash(address_from)
f8amount = Fixed8.TryParse(amount)
if f8amount.value % pow(10, 8 - Blockchain.Default().GetAssetState(assetId.ToBytes()).Precision) != 0:
raise Exception("incorrect amount precision")
fee = Fixed8.Zero()
output = TransactionOutput(AssetId=assetId, Value=f8amount, script_hash=scripthash_to)
tx = ContractTransaction(outputs=[output])
ttx = wallet.MakeTransaction(tx=tx, change_address=None, fee=fee, from_addr=scripthash_from)
if ttx is None:
raise Exception("insufficient funds, were funds already moved from multi-sig contract?")
context = ContractParametersContext(tx, isMultiSig=True)
wallet.Sign(context)
if context.Completed:
raise Exception("Something went wrong, multi-sig transaction failed")
else:
print("Transaction initiated")
return json.dumps(context.ToJson(), separators=(',', ':'))
def parse_send_from_params(self, params):
if len(params) not in [4, 5, 6]:
raise JsonRpcError(-32602, "Invalid params")
asset_id = get_asset_id(self.wallet, params[0])
if not type(asset_id) is UInt256:
raise JsonRpcError(-32602, "Invalid params")
address_from = params[1]
try:
address_from_sh = self.wallet.ToScriptHash(address_from)
except Exception:
raise JsonRpcError(-32602, "Invalid params")
address_to = params[2]
try:
address_to_sh = self.wallet.ToScriptHash(address_to)
except Exception:
raise JsonRpcError(-32602, "Invalid params")
amount = Fixed8.TryParse(params[3], require_positive=True)
if not amount or float(params[3]) == 0:
raise JsonRpcError(-32602, "Invalid params")
output = TransactionOutput(AssetId=asset_id,
Value=amount,
script_hash=address_to_sh)
contract_tx = ContractTransaction(outputs=[output])
fee = Fixed8.TryParse(params[4]) if len(params) >= 5 else Fixed8.Zero()
if fee < Fixed8.Zero():
raise JsonRpcError(-32602, "Invalid params")
change_addr_sh = None
if len(params) >= 6:
change_addr = params[5]
try:
change_addr_sh = self.wallet.ToScriptHash(change_addr)
except Exception:
raise JsonRpcError(-32602, "Invalid params")
return contract_tx, address_from_sh, fee, change_addr_sh
def _make_tx(self, addr_to):
"""
process transaction
"""
output1 = TransactionOutput(
AssetId = Blockchain.SystemCoin().Hash, # hash of the Gas transaction
Value = Fixed8.FromDecimal(2000), # this is how much gas each request will provide
script_hash = addr_to # address to send the Gas to
)
output2 = TransactionOutput(
AssetId = Blockchain.SystemShare().Hash, # hash of the NEO token transaction
Value = Fixed8.FromDecimal(100), # this is how much NEO each request will provide
script_hash = addr_to # address to send the NEO tokens too
)
contract_tx = ContractTransaction() # creates an instance of the transaction
contract_tx.outputs = [output1, output2] # outputs the data from the transaction
contract_tx = self.wallet.MakeTransaction(contract_tx) # processes transaction
print("tx to json: %s " % json.dumps(contract_tx.ToJson(), indent=4))
context = ContractParametersContext(contract_tx, isMultiSig=False) # getting the contract context (listed above)
self.wallet.Sign(context) # signs the contract
if context.Completed:
contract_tx.scripts = context.GetScripts() # gets the script hashes from the context
self.wallet.SaveTransaction(contract_tx) # update the state of the coins in the wallet
# print("will send tx: %s " % json.dumps(tx.ToJson(),indent=4))
relayed = NodeLeader.Instance().Relay(contract_tx) # relay the transaction to this instance of the node leader
if relayed: # if tx relay was successful, inform the user and return the contract transaction
print("Relayed Tx: %s " % contract_tx.Hash.ToString())
return contract_tx
else:
print("Could not relay tx %s " % contract_tx.Hash.ToString())
else:
print("Transaction initiated, but the signature is incomplete")
print(json.dumps(context.ToJson(), separators=(',', ':')))
return False
return False
def _make_tx(self, addr_to):
output1 = TransactionOutput(
AssetId = Blockchain.SystemCoin().Hash,
Value = Fixed8.FromDecimal(2000),
script_hash = addr_to
)
output2 = TransactionOutput(
AssetId = Blockchain.SystemShare().Hash,
Value = Fixed8.FromDecimal(100),
script_hash = addr_to
)
contract_tx = ContractTransaction()
contract_tx.outputs = [output1, output2]
contract_tx = self.wallet.MakeTransaction(contract_tx)
print("tx to json: %s " % json.dumps(contract_tx.ToJson(), indent=4))
context = ContractParametersContext(contract_tx, isMultiSig=False)
self.wallet.Sign(context)
if context.Completed:
contract_tx.scripts = context.GetScripts()
self.wallet.SaveTransaction(contract_tx)
# print("will send tx: %s " % json.dumps(tx.ToJson(),indent=4))
relayed = NodeLeader.Instance().Relay(contract_tx)
if relayed:
print("Relayed Tx: %s " % contract_tx.Hash.ToString())
return contract_tx
else:
print("Could not relay tx %s " % contract_tx.Hash.ToString())
else:
print("Transaction initiated, but the signature is incomplete")
print(json.dumps(context.ToJson(), separators=(',', ':')))
return False
return False
def deploy(from_addr, bytecode, contract_params, return_type, details):
response = requests.post('http://127.0.0.1:20332',
json={
'jsonrpc':
'2.0',
'id':
1,
'method':
'mw_construct_deploy_tx',
'params': [{
'from_addr': from_addr,
'bin': bytecode,
'contract_params': contract_params,
'return_type': return_type,
'details': details,
}]
}).json()
if 'error' in response:
print(response['error']['message'])
return
context = response['result']['context']
binary_tx = response['result']['tx']
contract_hash = response['result']['hash']
tx = ContractTransaction.DeserializeFromBufer(
binascii.unhexlify(binary_tx))
scripts = requests.post('http://127.0.0.1:5000/neo_sign/',
json={
'binary_tx': binary_tx
}).json()
tx.scripts = [
Witness(
x['invocation'].encode(),
x['verification'].encode(),
) for x in scripts
]
ms = StreamManager.GetStream()
writer = BinaryWriter(ms)
tx.Serialize(writer)
ms.flush()
signed_tx = ms.ToArray()
response = requests.post('http://127.0.0.1:20332',
json={
'jsonrpc': '2.0',
'id': 1,
'method': 'sendrawtransaction',
'params': [
signed_tx.decode(),
]
}).json()
print('contract hash:', contract_hash)
print(response)
def construct_send_basic(wallet, arguments):
if not wallet:
print("please open a wallet")
return False
if len(arguments) < 3:
print("Not enough arguments")
return False
arguments, from_address = get_from_addr(arguments)
arguments, priority_fee = get_fee(arguments)
arguments, user_tx_attributes = get_tx_attr_from_args(arguments)
arguments, owners = get_owners_from_params(arguments)
to_send = get_arg(arguments)
address_to = get_arg(arguments, 1)
amount = get_arg(arguments, 2)
assetId = get_asset_id(wallet, to_send)
if assetId is None:
print("Asset id not found")
return False
scripthash_to = lookup_addr_str(wallet, address_to)
if scripthash_to is None:
logger.debug("invalid address")
return False
scripthash_from = None
if from_address is not None:
scripthash_from = lookup_addr_str(wallet, from_address)
if scripthash_from is None:
logger.debug("invalid address")
return False
# if this is a token, we will use a different
# transfer mechanism
if type(assetId) is NEP5Token:
return do_token_transfer(assetId, wallet, from_address, address_to, amount_from_string(assetId, amount), tx_attributes=user_tx_attributes)
f8amount = get_asset_amount(amount, assetId)
if f8amount is False:
logger.debug("invalid amount")
return False
if float(amount) == 0:
print("amount cannot be 0")
return False
fee = Fixed8.Zero()
if priority_fee is not None:
fee = priority_fee
if fee is False:
logger.debug("invalid fee")
return False
output = TransactionOutput(AssetId=assetId, Value=f8amount, script_hash=scripthash_to)
contract_tx = ContractTransaction(outputs=[output])
return [contract_tx, scripthash_from, fee, owners, user_tx_attributes]
def send(addr_from, addr_to, asset, amount):
response = requests.post('http://127.0.0.1:20332',
json={
'jsonrpc': '2.0',
'id': 1,
'method': 'mw_construct_send_tx',
'params': {
'from': addr_from,
'to': addr_to,
'asset': asset,
'amount': amount,
}
}).json()
print(response)
context = response['result']['context']
binary_tx = response['result']['tx']
tx = ContractTransaction.DeserializeFromBufer(
binascii.unhexlify(binary_tx))
scripts = requests.post('http://127.0.0.1:5000/neo_sign/',
json={
'binary_tx': binary_tx,
'address': addr_from
}).json()
print('scripts', scripts)
tx.scripts = [
Witness(
x['invocation'].encode(),
x['verification'].encode(),
) for x in scripts
]
print(scripts)
ms = StreamManager.GetStream()
writer = BinaryWriter(ms)
tx.Serialize(writer)
ms.flush()
signed_tx = ms.ToArray()
print(tx.ToJson())
# print('does not send: return') ; return
response = requests.post('http://127.0.0.1:20332',
json={
'jsonrpc': '2.0',
'id': 1,
'method': 'sendrawtransaction',
'params': [
signed_tx.decode(),
]
}).json()
print(response)
def create_withdraw_tx(wallet, hold):
f8amount = Fixed8(hold.Amount)
coinRef = CoinReference(prev_hash=hold.TXHash, prev_index=hold.Index)
requested_vins = [coinRef]
use_vins_for_asset = [requested_vins, hold.AssetId]
output = TransactionOutput(AssetId=hold.AssetId, Value=f8amount, script_hash=hold.OutputHash)
withdraw_tx = ContractTransaction(outputs=[output])
withdraw_tx.withdraw_hold = hold
return wallet.MakeTransaction(tx=withdraw_tx,
change_address=hold.InputHash,
fee=Fixed8.Zero(),
from_addr=hold.InputHash,
use_standard=False,
watch_only_val=64,
use_vins_for_asset=use_vins_for_asset)
def test_9_send_neo_tx(self):
with patch('neo.Network.node.NeoNode.relay', return_value=self.async_return(True)):
wallet = self.GetWallet1()
tx = ContractTransaction()
tx.outputs = [TransactionOutput(Blockchain.SystemShare().Hash, Fixed8.FromDecimal(10.0), self.import_watch_addr)]
try:
tx = wallet.MakeTransaction(tx)
except (ValueError):
pass
cpc = ContractParametersContext(tx)
wallet.Sign(cpc)
tx.scripts = cpc.GetScripts()
nodemgr = NodeManager()
# we need at least 1 node for relay to be mocked
nodemgr.nodes = [NeoNode(object, object)]
result = nodemgr.relay(tx)
self.assertEqual(result, True)
def sign_context(binary_tx, private):
wallet = Wallet(b'', b'0' * 32, True)
wallet.CreateKey(binascii.unhexlify(private))
script_hash = WalletContract.CreateSignatureContract(
list(wallet._keys.values())[0].PublicKey)
wallet._contracts[script_hash.ScriptHash.ToBytes()] = script_hash
tx = ContractTransaction.DeserializeFromBufer(
binascii.unhexlify(binary_tx))
context = ContractParametersContext(tx, isMultiSig=False)
context.ScriptHashes = [script_hash.ScriptHash]
wallet.Sign(context)
return [x.ToJson() for x in context.GetScripts()]
def deploy(self, contract_params='0710', return_type='05'):
self.compile()
from_addr = NETWORKS[self.contract.network.name]['address']
bytecode = self.neo_contract_crowdsale.bytecode
neo_int = NeoInt(self.contract.network.name)
print('from address', from_addr)
details = {
'name': 'WISH',
'description': 'NEO smart contract',
'email': '*****@*****.**',
'version': '1',
'author': 'MyWish'
}
param_list = {
'from_addr': from_addr,
'bin': bytecode,
'needs_storage': True,
'needs_dynamic_invoke': False,
'contract_params': contract_params,
'return_type': return_type,
'details': details,
}
response = neo_int.mw_construct_deploy_tx(param_list)
print('construct response', response, flush=True)
binary_tx = response['tx']
contract_hash = response['hash']
tx = ContractTransaction.DeserializeFromBufer(
binascii.unhexlify(binary_tx))
tx = sign_neo_transaction(tx, binary_tx, from_addr)
print('after sign', tx.ToJson()['txid'], flush=True)
ms = StreamManager.GetStream()
writer = BinaryWriter(ms)
tx.Serialize(writer)
ms.flush()
signed_tx = ms.ToArray()
print('full tx:', flush=True)
print(signed_tx, flush=True)
result = neo_int.sendrawtransaction(signed_tx.decode())
print(result, flush=True)
if not result:
raise TxFail()
print('contract hash:', contract_hash)
print('result of send raw transaction: ', result)
self.neo_contract_crowdsale.address = contract_hash
self.neo_contract_crowdsale.tx_hash = tx.ToJson()['txid']
self.neo_contract_crowdsale.save()
def msg_deployed(self, message):
neo_int = NeoInt(self.contract.network.name)
from_addr = NETWORKS[self.contract.network.name]['address']
param_list = {
'from_addr':
from_addr,
'contract_params': [{
'type': str(ContractParameterType.String),
'value': 'init'
}, {
'type': str(ContractParameterType.Array),
'value': []
}],
'addr':
self.neo_contract_crowdsale.address,
}
response = neo_int.mw_construct_invoke_tx(param_list)
binary_tx = response['tx']
tx = ContractTransaction.DeserializeFromBufer(
binascii.unhexlify(binary_tx))
tx = sign_neo_transaction(tx, binary_tx, from_addr)
print('after sign', tx.ToJson()['txid'])
ms = StreamManager.GetStream()
writer = BinaryWriter(ms)
tx.Serialize(writer)
ms.flush()
signed_tx = ms.ToArray()
print('signed_tx', signed_tx)
result = neo_int.sendrawtransaction(signed_tx.decode())
print(result, flush=True)
if not result:
raise TxFail()
print('result of send raw transaction: ', result)
self.contract.save()
self.neo_contract_crowdsale.tx_hash = tx.ToJson()['txid']
self.neo_contract_crowdsale.save()
return
def construct_send_many(wallet, arguments):
if not wallet:
print("please open a wallet")
return False
if len(arguments) is 0:
print("Not enough arguments")
return False
outgoing = get_arg(arguments, convert_to_int=True)
if outgoing is None:
print("invalid outgoing number")
return False
if outgoing < 1:
print("outgoing number must be >= 1")
return False
arguments, from_address = get_from_addr(arguments)
arguments, change_address = get_change_addr(arguments)
arguments, priority_fee = get_fee(arguments)
arguments, owners = get_owners_from_params(arguments)
arguments, user_tx_attributes = get_tx_attr_from_args(arguments)
output = []
for i in range(outgoing):
print('Outgoing Number ', i + 1)
to_send = prompt("Asset to send: ")
assetId = get_asset_id(wallet, to_send)
if assetId is None:
print("Asset id not found")
return False
if type(assetId) is NEP5Token:
print('Sendmany does not support NEP5 tokens')
return False
address_to = prompt("Address to: ")
scripthash_to = lookup_addr_str(wallet, address_to)
if scripthash_to is None:
logger.debug("invalid address")
return False
amount = prompt("Amount to send: ")
f8amount = get_asset_amount(amount, assetId)
if f8amount is False:
logger.debug("invalid amount")
return False
if float(amount) == 0:
print("amount cannot be 0")
return False
tx_output = TransactionOutput(AssetId=assetId,
Value=f8amount,
script_hash=scripthash_to)
output.append(tx_output)
contract_tx = ContractTransaction(outputs=output)
scripthash_from = None
if from_address is not None:
scripthash_from = lookup_addr_str(wallet, from_address)
if scripthash_from is None:
logger.debug("invalid address")
return False
scripthash_change = None
if change_address is not None:
scripthash_change = lookup_addr_str(wallet, change_address)
if scripthash_change is None:
logger.debug("invalid address")
return False
fee = Fixed8.Zero()
if priority_fee is not None:
fee = priority_fee
if fee is False:
logger.debug("invalid fee")
return False
print("sending with fee: %s " % fee.ToString())
return [
contract_tx, scripthash_from, scripthash_change, fee, owners,
user_tx_attributes
]
def DeserializeFrom(reader):
"""
Deserialize full object.
Args:
reader (neo.IO.BinaryReader):
Returns:
Transaction:
"""
ttype = ord(reader.ReadByte())
tx = None
from neo.Core.TX.RegisterTransaction import RegisterTransaction
from neo.Core.TX.IssueTransaction import IssueTransaction
from neo.Core.TX.ClaimTransaction import ClaimTransaction
from neo.Core.TX.MinerTransaction import MinerTransaction
from neo.Core.TX.PublishTransaction import PublishTransaction
from neo.Core.TX.InvocationTransaction import InvocationTransaction
from neo.Core.TX.EnrollmentTransaction import EnrollmentTransaction
from neo.Core.TX.StateTransaction import StateTransaction
from neo.Core.TX.Transaction import ContractTransaction
if ttype == int.from_bytes(TransactionType.RegisterTransaction,
'little'):
tx = RegisterTransaction()
elif ttype == int.from_bytes(TransactionType.MinerTransaction,
'little'):
tx = MinerTransaction()
elif ttype == int.from_bytes(TransactionType.IssueTransaction,
'little'):
tx = IssueTransaction()
elif ttype == int.from_bytes(TransactionType.ClaimTransaction,
'little'):
tx = ClaimTransaction()
elif ttype == int.from_bytes(TransactionType.PublishTransaction,
'little'):
tx = PublishTransaction()
elif ttype == int.from_bytes(TransactionType.InvocationTransaction,
'little'):
tx = InvocationTransaction()
elif ttype == int.from_bytes(TransactionType.EnrollmentTransaction,
'little'):
tx = EnrollmentTransaction()
elif ttype == int.from_bytes(TransactionType.StateTransaction,
'little'):
tx = StateTransaction()
elif ttype == int.from_bytes(TransactionType.ContractTransaction,
'little'):
tx = ContractTransaction()
else:
tx = Transaction()
tx.Type = ttype
tx.DeserializeUnsignedWithoutType(reader)
tx.scripts = []
byt = reader.ReadVarInt()
if byt > 0:
for i in range(0, byt):
witness = Witness()
witness.Deserialize(reader)
tx.scripts.append(witness)
tx.OnDeserialized()
return tx
def construct_send_tx(wallet, arguments):
from_address = arguments['from']
to_send = arguments['asset']
address_to = arguments['to']
amount = arguments['amount']
user_tx_attributes = arguments.get('attrs', [])
assetId = get_asset_id(wallet, to_send)
if assetId is None:
raise Exception("Asset id not found")
scripthash_to = lookup_addr_str(wallet, address_to)
if scripthash_to is None:
raise Exception("invalid address")
scripthash_from = None
if from_address is not None:
scripthash_from = lookup_addr_str(wallet, from_address)
if type(assetId) is NEP5Token:
raise Exception("cannot transfer token in this version")
f8amount = Fixed8.TryParse(amount, require_positive=True)
if f8amount is None:
raise Exception("invalid amount format")
if type(assetId) is UInt256 and f8amount.value % pow(10, 8 - Blockchain.Default().GetAssetState(assetId.ToBytes()).Precision) != 0:
raise Exception("incorrect amount precision")
fee = Fixed8.Zero()
output = TransactionOutput(AssetId=assetId, Value=f8amount, script_hash=scripthash_to)
tx = ContractTransaction(outputs=[output])
ttx = wallet.MakeTransaction(tx=tx,
fee=fee,
from_addr=scripthash_from)
if ttx is None:
raise Exception("no funds")
standard_contract = wallet.GetStandardAddress()
if scripthash_from is not None:
signer_contract = wallet.GetContract(scripthash_from)
else:
signer_contract = wallet.GetContract(standard_contract)
if not signer_contract.IsMultiSigContract:
data = standard_contract.Data
tx.Attributes = [TransactionAttribute(usage=TransactionAttributeUsage.Script,
data=data)]
# insert any additional user specified tx attributes
tx.Attributes = tx.Attributes + user_tx_attributes
context = ContractParametersContext(tx, isMultiSig=signer_contract.IsMultiSigContract)
logger.info(context.ToJson())
logger.info('*'*60)
logger.info(tx.ToJson())
# import pdb
# pdb.set_trace()
ms = StreamManager.GetStream()
writer = BinaryWriter(ms)
tx.Serialize(writer)
ms.flush()
binary_tx = ms.ToArray()
print(tx)
return {'context': context.ToJson(), 'tx': binary_tx.decode()}
def construct_and_send(prompter, wallet, arguments):
try:
if not wallet:
print("please open a wallet")
return
if len(arguments) < 3:
print("Not enough arguments")
return
to_send = get_arg(arguments)
address_to = get_arg(arguments, 1)
amount = get_arg(arguments, 2)
address_from = get_arg(arguments, 3)
assetId = None
if to_send.lower() == 'neo':
assetId = Blockchain.Default().SystemShare().Hash
elif to_send.lower() == 'gas':
assetId = Blockchain.Default().SystemCoin().Hash
elif Blockchain.Default().GetAssetState(to_send):
assetId = Blockchain.Default().GetAssetState(to_send).AssetId
scripthash = wallet.ToScriptHash(address_to)
if scripthash is None:
print("invalid address")
return
f8amount = Fixed8.TryParse(amount)
if f8amount is None:
print("invalid amount format")
return
if f8amount.value % pow(10, 8 - Blockchain.Default().GetAssetState(assetId.ToBytes()).Precision) != 0:
print("incorrect amount precision")
return
fee = Fixed8.Zero()
if get_arg(arguments, 3):
fee = Fixed8.TryParse(get_arg(arguments, 3))
output = TransactionOutput(AssetId=assetId, Value=f8amount, script_hash=scripthash)
tx = ContractTransaction(outputs=[output])
ttx = wallet.MakeTransaction(tx=tx, change_address=None, fee=fee)
if ttx is None:
print("insufficient funds")
return
passwd = prompt("[Password]> ",
completer=prompter.completer,
is_password=True,
history=prompter.history,
get_bottom_toolbar_tokens=prompter.get_bottom_toolbar,
style=prompter.token_style)
if not wallet.ValidatePassword(passwd):
print("incorrect password")
return
context = ContractParametersContext(tx)
wallet.Sign(context)
if context.Completed:
tx.scripts = context.GetScripts()
wallet.SaveTransaction(tx)
relayed = NodeLeader.Instance().Relay(tx)
if relayed:
print("Relayed Tx: %s " % tx.Hash.ToString())
else:
print("Could not relay tx %s " % tx.Hash.ToString())
else:
print("Could not sign transaction")
return
except Exception as e:
print("could not send: %s " % e)
traceback.print_stack()
traceback.print_exc()
def do_send(self, arguments):
try:
if not self.Wallet:
print("please open a wallet")
return
if len(arguments) < 3:
print("Not enough arguments")
return
to_send = get_arg(arguments)
address = get_arg(arguments, 1)
amount = get_arg(arguments, 2)
assetId = None
if to_send.lower() == 'neo':
assetId = Blockchain.Default().SystemShare().Hash
elif to_send.lower() == 'gas':
assetId = Blockchain.Default().SystemCoin().Hash
elif Blockchain.Default().GetAssetState(to_send):
assetId = Blockchain.Default().GetAssetState(to_send).AssetId
scripthash = self.Wallet.ToScriptHash(address)
if scripthash is None:
print("invalid address")
return
f8amount = Fixed8.TryParse(amount)
if f8amount is None:
print("invalid amount format")
return
if f8amount.value % pow(
10, 8 - Blockchain.Default().GetAssetState(
assetId.ToBytes()).Precision) != 0:
print("incorrect amount precision")
return
fee = Fixed8.Zero()
if get_arg(arguments, 3):
fee = Fixed8.TryParse(get_arg(arguments, 3))
output = TransactionOutput(AssetId=assetId,
Value=f8amount,
script_hash=scripthash)
tx = ContractTransaction(outputs=[output])
ttx = self.Wallet.MakeTransaction(tx=tx,
change_address=None,
fee=fee)
if ttx is None:
print("insufficient funds")
return
self._wallet_send_tx = ttx
self._num_passwords_req = 1
self._gathered_passwords = []
self._gathering_password = True
self._gather_password_action = self.do_send_created_tx
except Exception as e:
print("could not send: %s " % e)
traceback.print_stack()
traceback.print_exc()
def construct_send_many(wallet, arguments):
if len(arguments) is 0:
print("Please specify the required parameter")
return
outgoing = get_arg(arguments, convert_to_int=True)
if outgoing is None:
print("Invalid outgoing number")
return
if outgoing < 1:
print("Outgoing number must be >= 1")
return
arguments, from_address = get_from_addr(arguments)
arguments, change_address = get_change_addr(arguments)
arguments, priority_fee = get_fee(arguments)
arguments, owners = get_owners_from_params(arguments)
arguments, user_tx_attributes = get_tx_attr_from_args(arguments)
output = []
for i in range(outgoing):
try:
print('Outgoing Number ', i + 1)
to_send = prompt("Asset to send: ")
assetId = get_asset_id(wallet, to_send)
if assetId is None:
print("Asset id not found")
return
if type(assetId) is NEP5Token:
print('sendmany does not support NEP5 tokens')
return
address_to = prompt("Address to: ")
scripthash_to = lookup_addr_str(wallet, address_to)
if scripthash_to is None:
logger.debug("invalid destination address")
return
amount = prompt("Amount to send: ")
f8amount = get_asset_amount(amount, assetId)
if f8amount is False:
logger.debug("invalid amount")
return
if float(amount) == 0:
print("Amount cannot be 0")
return
tx_output = TransactionOutput(AssetId=assetId,
Value=f8amount,
script_hash=scripthash_to)
output.append(tx_output)
except KeyboardInterrupt:
print('Transaction cancelled')
return
contract_tx = ContractTransaction(outputs=output)
scripthash_from = None
if from_address is not None:
scripthash_from = lookup_addr_str(wallet, from_address)
if scripthash_from is None:
logger.debug("invalid source address")
return
scripthash_change = None
if change_address is not None:
scripthash_change = lookup_addr_str(wallet, change_address)
if scripthash_change is None:
logger.debug("invalid change address")
return
fee = Fixed8.Zero()
if priority_fee is not None:
fee = priority_fee
if fee is False:
logger.debug("invalid fee")
return
print(f"Sending with fee: {fee.ToString()}")
return [
contract_tx, scripthash_from, scripthash_change, fee, owners,
user_tx_attributes
]
def construct_and_send(prompter, wallet, arguments, prompt_password=True):
try:
if not wallet:
print("please open a wallet")
return False
if len(arguments) < 3:
print("Not enough arguments")
return False
arguments, from_address = get_from_addr(arguments)
arguments, user_tx_attributes = get_tx_attr_from_args(arguments)
to_send = get_arg(arguments)
address_to = get_arg(arguments, 1)
amount = get_arg(arguments, 2)
assetId = get_asset_id(wallet, to_send)
if assetId is None:
print("Asset id not found")
return False
scripthash_to = lookup_addr_str(wallet, address_to)
if scripthash_to is None:
print("invalid address")
return False
scripthash_from = None
if from_address is not None:
scripthash_from = lookup_addr_str(wallet, from_address)
# if this is a token, we will use a different
# transfer mechanism
if type(assetId) is NEP5Token:
return do_token_transfer(assetId, wallet, from_address, address_to, amount_from_string(assetId, amount), prompt_passwd=prompt_password)
f8amount = Fixed8.TryParse(amount, require_positive=True)
if f8amount is None:
print("invalid amount format")
return False
if type(assetId) is UInt256 and f8amount.value % pow(10, 8 - Blockchain.Default().GetAssetState(assetId.ToBytes()).Precision) != 0:
print("incorrect amount precision")
return False
fee = Fixed8.Zero()
output = TransactionOutput(AssetId=assetId, Value=f8amount, script_hash=scripthash_to)
tx = ContractTransaction(outputs=[output])
ttx = wallet.MakeTransaction(tx=tx,
change_address=None,
fee=fee,
from_addr=scripthash_from)
if ttx is None:
print("insufficient funds")
return False
if prompt_password:
passwd = prompt("[Password]> ", is_password=True)
if not wallet.ValidatePassword(passwd):
print("incorrect password")
return False
standard_contract = wallet.GetStandardAddress()
if scripthash_from is not None:
signer_contract = wallet.GetContract(scripthash_from)
else:
signer_contract = wallet.GetContract(standard_contract)
if not signer_contract.IsMultiSigContract:
data = standard_contract.Data
tx.Attributes = [TransactionAttribute(usage=TransactionAttributeUsage.Script,
data=data)]
# insert any additional user specified tx attributes
tx.Attributes = tx.Attributes + user_tx_attributes
context = ContractParametersContext(tx, isMultiSig=signer_contract.IsMultiSigContract)
wallet.Sign(context)
if context.Completed:
tx.scripts = context.GetScripts()
# print("will send tx: %s " % json.dumps(tx.ToJson(),indent=4))
relayed = NodeLeader.Instance().Relay(tx)
if relayed:
wallet.SaveTransaction(tx)
print("Relayed Tx: %s " % tx.Hash.ToString())
return tx
else:
print("Could not relay tx %s " % tx.Hash.ToString())
else:
print("Transaction initiated, but the signature is incomplete")
print(json.dumps(context.ToJson(), separators=(',', ':')))
return False
except Exception as e:
print("could not send: %s " % e)
traceback.print_stack()
traceback.print_exc()
return False
def construct_and_send(prompter, wallet, arguments, prompt_password=True):
try:
if not wallet:
print("please open a wallet")
return False
if len(arguments) < 3:
print("Not enough arguments")
return False
arguments, from_address = get_from_addr(arguments)
arguments, user_tx_attributes = get_tx_attr_from_args(arguments)
arguments, owners = get_owners_from_params(arguments)
arguments, priority_fee = get_fee(arguments)
to_send = get_arg(arguments)
address_to = get_arg(arguments, 1)
amount = get_arg(arguments, 2)
assetId = get_asset_id(wallet, to_send)
if assetId is None:
print("Asset id not found")
return False
scripthash_to = lookup_addr_str(wallet, address_to)
if scripthash_to is None:
print("invalid address")
return False
scripthash_from = None
if from_address is not None:
scripthash_from = lookup_addr_str(wallet, from_address)
# if this is a token, we will use a different
# transfer mechanism
if type(assetId) is NEP5Token:
return do_token_transfer(assetId, wallet, from_address, address_to, amount_from_string(assetId, amount), prompt_passwd=prompt_password, tx_attributes=user_tx_attributes)
f8amount = Fixed8.TryParse(amount, require_positive=True)
if f8amount is None:
print("invalid amount format")
return False
if type(assetId) is UInt256 and f8amount.value % pow(10, 8 - Blockchain.Default().GetAssetState(assetId.ToBytes()).Precision) != 0:
print("incorrect amount precision")
return False
fee = Fixed8.Zero()
if priority_fee is not None:
fee = priority_fee
print("sending with fee: %s " % fee.ToString())
output = TransactionOutput(AssetId=assetId, Value=f8amount, script_hash=scripthash_to)
tx = ContractTransaction(outputs=[output])
ttx = wallet.MakeTransaction(tx=tx,
change_address=None,
fee=fee,
from_addr=scripthash_from)
if ttx is None:
print("insufficient funds")
return False
if prompt_password:
passwd = prompt("[Password]> ", is_password=True)
if not wallet.ValidatePassword(passwd):
print("incorrect password")
return False
standard_contract = wallet.GetStandardAddress()
if scripthash_from is not None:
signer_contract = wallet.GetContract(scripthash_from)
else:
signer_contract = wallet.GetContract(standard_contract)
if not signer_contract.IsMultiSigContract and owners is None:
data = standard_contract.Data
tx.Attributes = [TransactionAttribute(usage=TransactionAttributeUsage.Script,
data=data)]
# insert any additional user specified tx attributes
tx.Attributes = tx.Attributes + user_tx_attributes
if owners:
owners = list(owners)
for owner in owners:
tx.Attributes.append(
TransactionAttribute(usage=TransactionAttributeUsage.Script, data=owner))
context = ContractParametersContext(tx, isMultiSig=signer_contract.IsMultiSigContract)
wallet.Sign(context)
if owners:
owners = list(owners)
gather_signatures(context, tx, owners)
if context.Completed:
tx.scripts = context.GetScripts()
# print("will send tx: %s " % json.dumps(tx.ToJson(),indent=4))
relayed = NodeLeader.Instance().Relay(tx)
if relayed:
wallet.SaveTransaction(tx)
print("Relayed Tx: %s " % tx.Hash.ToString())
return tx
else:
print("Could not relay tx %s " % tx.Hash.ToString())
else:
print("Transaction initiated, but the signature is incomplete")
print(json.dumps(context.ToJson(), separators=(',', ':')))
return False
except Exception as e:
print("could not send: %s " % e)
traceback.print_stack()
traceback.print_exc()
return False
def SplitUnspentCoin(wallet, asset_id, from_addr, index, divisions, fee=Fixed8.Zero()):
"""
Split unspent asset vins into several vouts
Args:
wallet (neo.Wallet): wallet to show unspent coins from.
asset_id (UInt256): a bytearray (len 32) representing an asset on the blockchain.
from_addr (UInt160): a bytearray (len 20) representing an address.
index (int): index of the unspent vin to split
divisions (int): number of vouts to create
fee (Fixed8): A fee to be attached to the Transaction for network processing purposes.
Returns:
neo.Core.TX.Transaction.ContractTransaction: contract transaction created
"""
if wallet is None:
print("Please open a wallet.")
return
unspent_items = wallet.FindUnspentCoinsByAsset(asset_id, from_addr=from_addr)
if not unspent_items:
print(f"No unspent assets matching the arguments.")
return
if index < len(unspent_items):
unspent_item = unspent_items[index]
else:
print(f"unspent-items: {unspent_items}")
print(f"Could not find unspent item for asset {asset_id} with index {index}")
return
outputs = split_to_vouts(asset_id, from_addr, unspent_item.Output.Value, divisions)
# subtract a fee from the first vout
if outputs[0].Value > fee:
outputs[0].Value -= fee
else:
print("Fee could not be subtracted from outputs.")
return
contract_tx = ContractTransaction(outputs=outputs, inputs=[unspent_item.Reference])
ctx = ContractParametersContext(contract_tx)
wallet.Sign(ctx)
print("Splitting: %s " % json.dumps(contract_tx.ToJson(), indent=4))
try:
passwd = prompt("[Password]> ", is_password=True)
except KeyboardInterrupt:
print("Splitting cancelled")
return
if not wallet.ValidatePassword(passwd):
print("incorrect password")
return
if ctx.Completed:
contract_tx.scripts = ctx.GetScripts()
relayed = NodeLeader.Instance().Relay(contract_tx)
if relayed:
wallet.SaveTransaction(contract_tx)
print("Relayed Tx: %s " % contract_tx.Hash.ToString())
return contract_tx
else:
print("Could not relay tx %s " % contract_tx.Hash.ToString())
def example1():
neo_asset_id = Blockchain.GetSystemShare().Hash
gas_asset_id = Blockchain.GetSystemCoin().Hash
source_address = "AJQ6FoaSXDFzA6wLnyZ1nFN7SGSN2oNTc3"
source_script_hash = address_to_scripthash(source_address)
destination_address = "Ad9A1xPbuA5YBFr1XPznDwBwQzdckAjCev"
destination_script_hash = address_to_scripthash(destination_address)
# Let's start with building a ContractTransaction
# The constructor already sets the correct `Type` and `Version` fields, so we do not have to worry about that
contract_tx = ContractTransaction()
# the ContractTransaction type has no special data, so we do not have to do anything there
# Next we can add Attributes if we want. Again the various types are described in point 4. of the main link above
# We will add a simple "description"
contract_tx.Attributes.append(
TransactionAttribute(usage=TransactionAttributeUsage.Description,
data="My raw contract transaction description"))
# The next field we will set are the inputs. The inputs neo-python expects are of the type ``CoinReference``
# To create these inputs we will need the usual `PrevHash` and `PrevIndex` values.
# You can get the required data by using e.g. the neoscan.io API: https://api.neoscan.io/docs/index.html#api-v1-get-3
# The `PrevHash` field equals to neoscan's `balance.unspent[index].txid` key, and `PrevIndex` comes from `balance.unspent[index].n`
# It is up to the transaction creator to make sure that the sum of all input ``value`` fields is equal to or bigger than the amount that's intended to be send
# The below values are taken from data out of the `neo-test1-w.wallet` fixture wallet (a wallet neo-python uses for internal testing)
input1 = CoinReference(prev_hash=UInt256(data=binascii.unhexlify(
'949354ea0a8b57dfee1e257a1aedd1e0eea2e5837de145e8da9c0f101bfccc8e')),
prev_index=1)
contract_tx.inputs = [input1]
# Next we will create the outputs.
# The above input has a value of 50. We will create 2 outputs.
# 1 output for sending 3 NEO to a specific destination address
send_to_destination_output = TransactionOutput(
AssetId=neo_asset_id,
Value=Fixed8.FromDecimal(3),
script_hash=destination_script_hash)
# and a second output for sending the change back to ourselves
return_change_output = TransactionOutput(AssetId=neo_asset_id,
Value=Fixed8.FromDecimal(47),
script_hash=source_script_hash)
contract_tx.outputs = [send_to_destination_output, return_change_output]
# at this point we've build our unsigned transaction and it's time to sign it before we get the raw output that we can send to the network via RPC
# we need to create a Wallet instance for helping us with signing
wallet = UserWallet.Create('path',
to_aes_key('mypassword'),
generate_default_key=False)
# if you have a WIF use the following
# this WIF comes from the `neo-test1-w.wallet` fixture wallet
private_key = KeyPair.PrivateKeyFromWIF(
"Ky94Rq8rb1z8UzTthYmy1ApbZa9xsKTvQCiuGUZJZbaDJZdkvLRV")
# if you have a NEP2 encrypted key use the following instead
# private_key = KeyPair.PrivateKeyFromNEP2("NEP2 key string", "password string")
# we add the key to our wallet
wallet.CreateKey(private_key)
# and now we're ready to sign
context = ContractParametersContext(contract_tx)
wallet.Sign(context)
contract_tx.scripts = context.GetScripts()
print(contract_tx.Hash.ToString())
raw_tx = contract_tx.ToArray()
