mirror of https://github.com/ConsenSys/mythril
blockchainethereumsmart-contractssoliditysecurityprogram-analysissecurity-analysissymbolic-execution
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103 lines
3.1 KiB
103 lines
3.1 KiB
from mythril.laser.ethereum.evm_exceptions import VmException
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from mythril.laser.ethereum.svm import LaserEVM
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from mythril.laser.ethereum.state import Account
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from mythril.disassembler.disassembly import Disassembly
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from mythril.laser.ethereum.transaction.concolic import execute_message_call
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from mythril.analysis.solver import get_model
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from datetime import datetime
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import binascii
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import json
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from pathlib import Path
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import pytest
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evm_test_dir = Path(__file__).parent / "VMTests"
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test_types = [
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"vmArithmeticTest",
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"vmBitwiseLogicOperation",
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"vmPushDupSwapTest",
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"vmTests",
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]
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def load_test_data(designations):
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return_data = []
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for designation in designations:
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for file_reference in (evm_test_dir / designation).iterdir():
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with file_reference.open() as file:
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top_level = json.load(file)
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for test_name, data in top_level.items():
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pre_condition = data["pre"]
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action = data["exec"]
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post_condition = data.get("post", {})
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return_data.append(
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(test_name, pre_condition, action, post_condition)
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)
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return return_data
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@pytest.mark.parametrize(
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"test_name, pre_condition, action, post_condition", load_test_data(test_types)
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)
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def test_vmtest(
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test_name: str, pre_condition: dict, action: dict, post_condition: dict
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) -> None:
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# Arrange
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accounts = {}
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for address, details in pre_condition.items():
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account = Account(address)
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account.code = Disassembly(details["code"][2:])
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account.balance = int(details["balance"], 16)
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account.nonce = int(details["nonce"], 16)
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accounts[address] = account
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laser_evm = LaserEVM(accounts)
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# Act
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laser_evm.time = datetime.now()
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# TODO: move this line below and check for VmExceptions when gas has been implemented
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if post_condition == {}:
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return
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execute_message_call(
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laser_evm,
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callee_address=action["address"],
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caller_address=action["caller"],
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origin_address=action["origin"],
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code=action["code"][2:],
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gas=action["gas"],
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data=binascii.a2b_hex(action["data"][2:]),
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gas_price=int(action["gasPrice"], 16),
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value=int(action["value"], 16),
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)
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# Assert
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assert len(laser_evm.open_states) == 1
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world_state = laser_evm.open_states[0]
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model = get_model(next(iter(laser_evm.nodes.values())).states[0].mstate.constraints)
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for address, details in post_condition.items():
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account = world_state[address]
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assert account.nonce == int(details["nonce"], 16)
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assert account.code.bytecode == details["code"][2:]
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for index, value in details["storage"].items():
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expected = int(value, 16)
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if type(account.storage[int(index, 16)]) != int:
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actual = model.eval(account.storage[int(index, 16)])
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actual = 1 if actual == True else 0 if actual == False else actual
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else:
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actual = account.storage[int(index, 16)]
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assert actual == expected
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