mirror of https://github.com/ConsenSys/mythril
blockchainethereumsmart-contractssoliditysecurityprogram-analysissecurity-analysissymbolic-execution
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
2.2 KiB
57 lines
2.2 KiB
from mythril.laser.smt import symbol_factory
|
|
from mythril.disassembler.disassembly import Disassembly
|
|
from mythril.laser.ethereum.state.environment import Environment
|
|
from mythril.laser.ethereum.state.machine_state import MachineState
|
|
from mythril.laser.ethereum.state.global_state import GlobalState
|
|
from mythril.laser.ethereum.state.world_state import WorldState
|
|
from mythril.laser.ethereum.instructions import Instruction
|
|
from mythril.laser.ethereum.transaction.transaction_models import MessageCallTransaction
|
|
|
|
|
|
def test_extcodecopy():
|
|
# Arrange
|
|
new_world_state = WorldState()
|
|
new_account = new_world_state.create_account(balance=10, address=101)
|
|
new_account.code = Disassembly("60616240")
|
|
ext_account = new_world_state.create_account(balance=1000, address=121)
|
|
ext_account.code = Disassembly("6040404040")
|
|
|
|
new_environment = Environment(new_account, None, None, None, None, None, None)
|
|
state = GlobalState(
|
|
new_world_state, new_environment, None, MachineState(gas_limit=8000000)
|
|
)
|
|
state.transaction_stack.append(
|
|
(MessageCallTransaction(world_state=WorldState(), gas_limit=8000000), None)
|
|
)
|
|
|
|
state.mstate.stack = [3, 0, 0, 121]
|
|
instruction = Instruction("extcodecopy", dynamic_loader=None)
|
|
|
|
# Act
|
|
new_state = instruction.evaluate(state)[0]
|
|
# Assert
|
|
assert new_state.mstate.memory[0:3] == [96, 64, 64]
|
|
|
|
|
|
def test_extcodecopy_fail():
|
|
# Arrange
|
|
new_world_state = WorldState()
|
|
new_account = new_world_state.create_account(balance=10, address=101)
|
|
new_account.code = Disassembly("60616240")
|
|
new_environment = Environment(new_account, None, None, None, None, None, None)
|
|
state = GlobalState(
|
|
new_world_state, new_environment, None, MachineState(gas_limit=8000000)
|
|
)
|
|
state.transaction_stack.append(
|
|
(MessageCallTransaction(world_state=WorldState(), gas_limit=8000000), None)
|
|
)
|
|
|
|
state.mstate.stack = [2, 2, 2, symbol_factory.BitVecSym("FAIL", 256)]
|
|
instruction = Instruction("extcodecopy", dynamic_loader=None)
|
|
|
|
# Act
|
|
new_state = instruction.evaluate(state)[0]
|
|
|
|
# Assert
|
|
assert new_state.mstate.stack == []
|
|
assert new_state.mstate.memory._memory == state.mstate.memory._memory
|
|
|