def InvokeWithTokenVerificationScript(wallet, tx, token, fee=Fixed8.Zero()):
wallet_tx = wallet.MakeTransaction(tx=tx, fee=fee, use_standard=True)
if wallet_tx:
token_contract_state = Blockchain.Default().GetContract(
token.ScriptHash.ToString())
print("token contract %s " % token_contract_state)
tx.Attributes = [
TransactionAttribute(usage=TransactionAttributeUsage.Script,
data=token.ScriptHash.Data)
]
reedeem_script = token_contract_state.Code.Script.hex()
# there has to be at least 1 param, and the first
# one needs to be a signature param
param_list = bytearray(b'\x00\x00')
verification_contract = Contract.Create(
reedeem_script, param_list,
wallet.GetDefaultContract().PublicKeyHash)
context = ContractParametersContext(wallet_tx)
wallet.Sign(context)
context.Add(verification_contract, 0, 0)
if context.Completed:
wallet_tx.scripts = context.GetScripts()
relayed = False
# print("full wallet tx: %s " % json.dumps(wallet_tx.ToJson(), indent=4))
# toarray = Helper.ToArray(wallet_tx)
# print("to arary %s " % toarray)
relayed = NodeLeader.Instance().Relay(wallet_tx)
if relayed:
print("Relayed Tx: %s " % wallet_tx.Hash.ToString())
# if it was relayed, we save tx
wallet.SaveTransaction(wallet_tx)
return wallet_tx
else:
print("Could not relay tx %s " % wallet_tx.Hash.ToString())
else:
print("Incomplete signature")
else:
print("Insufficient funds")
return False
def InvokeWithdrawTx(wallet, tx, contract_hash):
# print("withdraw tx 1 %s " % json.dumps(tx.ToJson(), indent=4))
requestor_contract = wallet.GetDefaultContract()
tx.Attributes = [
TransactionAttribute(usage=TransactionAttributeUsage.Script,
data=Crypto.ToScriptHash(
requestor_contract.Script).Data)
]
withdraw_contract_state = Blockchain.Default().GetContract(
contract_hash.encode('utf-8'))
withdraw_verification = None
if withdraw_contract_state is not None:
reedeem_script = withdraw_contract_state.Code.Script.hex()
# there has to be at least 1 param, and the first
# one needs to be a signature param
param_list = bytearray(b'\x00')
# if there's more than one param
# we set the first parameter to be the signature param
if len(withdraw_contract_state.Code.ParameterList) > 1:
param_list = bytearray(withdraw_contract_state.Code.ParameterList)
param_list[0] = 0
verification_contract = Contract.Create(
reedeem_script, param_list, requestor_contract.PublicKeyHash)
address = verification_contract.Address
withdraw_verification = verification_contract
context = ContractParametersContext(tx)
wallet.Sign(context)
context.Add(withdraw_verification, 0, 0)
if context.Completed:
tx.scripts = context.GetScripts()
print("withdraw tx %s " % json.dumps(tx.ToJson(), indent=4))
wallet.SaveTransaction(tx)
relayed = NodeLeader.Instance().Relay(tx)
if relayed:
print("Relayed Withdrawal Tx: %s " % tx.Hash.ToString())
return True
else:
print("Could not relay witdrawal tx %s " % tx.Hash.ToString())
else:
print("Incomplete signature")
def InvokeWithTokenVerificationScript(wallet, tx, token, fee=Fixed8.Zero(), invoke_attrs=None):
try:
wallet_tx = wallet.MakeTransaction(tx=tx, fee=fee, use_standard=True)
except ValueError:
print("Insufficient funds")
return False
if wallet_tx:
token_contract_state = Blockchain.Default().GetContract(token.ScriptHash.ToString())
print("token contract %s " % token_contract_state)
tx.Attributes = [
TransactionAttribute(usage=TransactionAttributeUsage.Script,
data=token.ScriptHash.Data)
]
if invoke_attrs:
tx.Attributes += invoke_attrs
reedeem_script = token_contract_state.Code.Script.hex()
# there has to be at least 1 param, and the first
# one needs to be a signature param
param_list = bytearray(b'\x00\x00')
verification_contract = Contract.Create(reedeem_script, param_list, wallet.GetDefaultContract().PublicKeyHash)
context = ContractParametersContext(wallet_tx)
wallet.Sign(context)
context.Add(verification_contract, 0, 0)
if context.Completed:
wallet_tx.scripts = context.GetScripts()
nodemgr = NodeManager()
relayed = nodemgr.relay(wallet_tx)
if relayed:
print("Relayed Tx: %s " % wallet_tx.Hash.ToString())
# if it was relayed, we save tx
wallet.SaveTransaction(wallet_tx)
return wallet_tx
else:
print("Could not relay tx %s " % wallet_tx.Hash.ToString())
else:
print("Incomplete signature")
else:
print("Insufficient funds")
return False
def PerformWithdrawTx(wallet, tx, contract_hash):
requestor_contract = wallet.GetDefaultContract()
withdraw_contract_state = Blockchain.Default().GetContract(
contract_hash.encode('utf-8'))
reedeem_script = withdraw_contract_state.Code.Script.hex()
# there has to be at least 1 param, and the first
# one needs to be a signature param
param_list = bytearray(b'\x00')
# if there's more than one param
# we set the first parameter to be the signature param
if len(withdraw_contract_state.Code.ParameterList) > 1:
param_list = bytearray(withdraw_contract_state.Code.ParameterList)
param_list[0] = 0
verification_contract = Contract.Create(reedeem_script, param_list,
requestor_contract.PublicKeyHash)
context = ContractParametersContext(tx)
context.Add(verification_contract, 0, bytearray(0))
if context.Completed:
tx.scripts = context.GetScripts()
print("withdraw tx %s " % json.dumps(tx.ToJson(), indent=4))
relayed = NodeLeader.Instance().Relay(tx)
if relayed:
# wallet.SaveTransaction(tx) # dont save this tx
print("Relayed Withdrawal Tx: %s " % tx.Hash.ToString())
return tx
else:
print("Could not relay witdrawal tx %s " % tx.Hash.ToString())
else:
print("Incomplete signature")
return False
