def deploy_dos_contract(self, chain: MiningChain) -> None:
# Instantiate the contract
dos_contract = self.w3.eth.contract(
abi=self.contract_interface['abi'],
bytecode=self.contract_interface['bin']
)
# Build transaction to deploy the contract
w3_tx1 = dos_contract.constructor().buildTransaction(W3_TX_DEFAULTS)
tx = new_transaction(
vm=chain.get_vm(),
private_key=FUNDED_ADDRESS_PRIVATE_KEY,
from_=FUNDED_ADDRESS,
to=CREATE_CONTRACT_ADDRESS,
amount=0,
gas=FIRST_TX_GAS_LIMIT,
data=decode_hex(w3_tx1['data']),
)
logging.debug(f'Applying Transaction {tx}')
block, receipt, computation = chain.apply_transaction(tx)
self.deployed_contract_address = computation.msg.storage_address
assert computation.is_success
# Interact with the deployed contract by calling the totalSupply() API ?????
self.dos_contract = self.w3.eth.contract(
address=Web3.toChecksumAddress(encode_hex(self.deployed_contract_address)),
abi=self.contract_interface['abi'],
)
def _deploy_simple_token(self, chain: MiningChain) -> None:
# Instantiate the contract
SimpleToken = self.w3.eth.contract(
abi=self.contract_interface['abi'],
bytecode=self.contract_interface['bin'])
# Build transaction to deploy the contract
w3_tx = SimpleToken.constructor().buildTransaction(W3_TX_DEFAULTS)
tx = new_transaction(
vm=chain.get_vm(),
private_key=FUNDED_ADDRESS_PRIVATE_KEY,
from_=FUNDED_ADDRESS,
to=CREATE_CONTRACT_ADDRESS,
amount=0,
gas=FIRST_TX_GAS_LIMIT,
data=decode_hex(w3_tx['data']),
)
logging.debug(f'Applying Transaction {tx}')
block, receipt, computation = chain.apply_transaction(tx)
# Keep track of deployed contract address
self.deployed_contract_address = computation.msg.storage_address
assert computation.is_success
# Keep track of simple_token object
self.simple_token = self.w3.eth.contract(
address=Web3.toChecksumAddress(
encode_hex(self.deployed_contract_address)),
abi=self.contract_interface['abi'],
)
def sstore_uint64_revert(self, chain: MiningChain) -> None:
w3_tx4 = self.dos_contract.functions.storageEntropyRevert().buildTransaction(W3_TX_DEFAULTS)
tx4 = new_transaction(
vm=chain.get_vm(),
private_key=FUNDED_ADDRESS_PRIVATE_KEY,
from_=FUNDED_ADDRESS,
to=self.deployed_contract_address,
amount=0,
gas=FORTH_TX_GAS_LIMIT,
data=decode_hex(w3_tx4['data']),
)
block, receipt, computation = chain.apply_transaction(tx4)
def create_empty_contract_revert(self, chain: MiningChain) -> None:
w3_tx5 = self.dos_contract.functions.createEmptyContractRevert().buildTransaction(
W3_TX_DEFAULTS)
tx5 = new_transaction(
vm=chain.get_vm(),
private_key=FUNDED_ADDRESS_PRIVATE_KEY,
from_=FUNDED_ADDRESS,
to=self.deployed_contract_address,
amount=0,
gas=FIFTH_TX_GAS_LIMIT,
data=decode_hex(w3_tx5['data']),
)
block, receipt, computation = chain.apply_transaction(tx5)
def _erc_approve(self, addr2: str, chain: MiningChain) -> None:
w3_tx = self.simple_token.functions.approve(
addr2, TRANSFER_AMOUNT).buildTransaction(W3_TX_DEFAULTS)
tx = new_transaction(
vm=chain.get_vm(),
private_key=FUNDED_ADDRESS_PRIVATE_KEY,
from_=FUNDED_ADDRESS,
to=self.deployed_contract_address,
amount=0,
gas=SECOND_TX_GAS_LIMIT,
data=decode_hex(w3_tx['data']),
)
block, receipt, computation = chain.apply_transaction(tx)
assert computation.is_success
assert to_int(computation.output) == 1
def apply_transaction(self, chain: MiningChain) -> None:
if self.config.to_address is None:
to_address = generate_random_address()
else:
to_address = self.config.to_address
tx = new_transaction(vm=chain.get_vm(),
private_key=FUNDED_ADDRESS_PRIVATE_KEY,
from_=FUNDED_ADDRESS,
to=to_address,
amount=100,
data=b'')
logging.debug('Applying Transaction {}'.format(tx))
block, receipt, computation = chain.apply_transaction(tx)
logging.debug('Block {}'.format(block))
logging.debug('Receipt {}'.format(receipt))
logging.debug('Computation {}'.format(computation))
