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535 | @pytest.mark.valid_from("Paris")
@pytest.mark.parametrize(
"create2_dest_already_in_state",
(
pytest.param(True, marks=pytest.mark.pre_alloc_mutable),
False,
),
)
@pytest.mark.parametrize(
"call_create2_contract_at_the_end",
(True, False),
)
def test_dynamic_create2_selfdestruct_collision_two_different_transactions(
fork: Fork,
create2_dest_already_in_state: bool,
call_create2_contract_at_the_end: bool,
pre: Alloc,
blockchain_test: BlockchainTestFiller,
) -> None:
"""
Dynamic Create2->Suicide->Create2 collision scenario.
Perform a CREATE2, make sure that the initcode sets at least a couple of
storage keys, then on a different call, in the same tx, perform a
self-destruct.
Then:
a) on the same tx, attempt to recreate the contract
1) and create2 contract already in the state
2) and create2 contract is not in the state
b) on a different tx, attempt to recreate the contract
-> Covered in this test
Perform a CREATE2, make sure that the initcode sets at
least a couple of storage keys, then in a different tx, perform a
self-destruct.
Then:
a) on the same tx, attempt to recreate the contract
b) on a different tx, attempt to recreate the contract
Check the test case described in
https://lf-hyperledger.atlassian.net/wiki/spaces/BESU/pages/22156575/2024-01-06
+Mainnet+Halting+Event
"""
# assert call_create2_contract_at_the_end, "invalid test"
# Storage locations
create2_constructor_worked = 1
first_create2_result = 2
second_create2_result = 3
code_worked = 4
# Constants
address_zero = Address(0x00)
create2_salt = 1
# Create EOA for sendall destination (receives selfdestruct funds)
sendall_destination = pre.fund_eoa(0) # Will be funded by selfdestruct
# calls
# Create storage contract that will be called during initialization
address_create2_storage = pre.deploy_contract(
code=Op.SSTORE(1, 1),
balance=7000000000000000000,
)
# CREATE2 Initcode
deploy_code = Op.SELFDESTRUCT(sendall_destination)
initcode = Initcode(
deploy_code=deploy_code,
initcode_prefix=Op.SSTORE(create2_constructor_worked, 1)
+ Op.CALL(Op.GAS(), address_create2_storage, 0, 0, 0, 0, 0),
)
# Create the contract that performs CREATE2 operations
address_code = pre.deploy_contract(
code=Op.CALLDATACOPY(0, 0, Op.CALLDATASIZE())
+ Op.MSTORE(
0,
Op.CREATE2(Op.SELFBALANCE(), 0, Op.CALLDATASIZE(), create2_salt),
)
+ Op.RETURN(0, 32),
)
# Created addresses
create2_address = compute_create2_address(
address_code, create2_salt, initcode
)
call_address_in_the_end = (
create2_address if call_create2_contract_at_the_end else address_zero
)
# Values
pre_existing_create2_balance = 1
first_create2_value = 10
first_call_value = 100
second_create2_value = 1000
second_call_value = 10000
# Create the first contract that performs the first transaction
address_to = pre.deploy_contract(
code=Op.JUMPDEST()
# Make a subcall that do CREATE2 and returns its the result
+ Op.CALLDATACOPY(0, 0, Op.CALLDATASIZE())
+ Op.CALL(
100000,
address_code,
first_create2_value,
0,
Op.CALLDATASIZE(),
0,
32,
)
+ Op.SSTORE(
first_create2_result,
Op.MLOAD(0),
)
# In case the create2 didn't work, flush account balance
+ Op.CALL(100000, address_code, 0, 0, 0, 0, 0)
# Call to the created account to trigger selfdestruct
+ Op.CALL(100000, create2_address, first_call_value, 0, 0, 0, 0)
+ Op.SSTORE(code_worked, 1),
balance=100000000,
storage={first_create2_result: 0xFF},
)
# Create the second contract that performs the second transaction
address_to_second = pre.deploy_contract(
code=Op.JUMPDEST()
# Make a subcall that do CREATE2 collision and returns its address as
# the result
+ Op.CALLDATACOPY(0, 0, Op.CALLDATASIZE())
+ Op.CALL(
100000,
address_code,
second_create2_value,
0,
Op.CALLDATASIZE(),
0,
32,
)
+ Op.SSTORE(
second_create2_result,
Op.MLOAD(0),
)
# Call to the created account to trigger selfdestruct
+ Op.CALL(
200000, call_address_in_the_end, second_call_value, 0, 0, 0, 0
)
+ Op.SSTORE(code_worked, 1),
balance=100000000,
storage={second_create2_result: 0xFF},
)
# Create the sender EOA
sender = pre.fund_eoa(7000000000000000000)
if create2_dest_already_in_state:
# Create2 address already in the state, e.g. deployed in a previous
# block
pre[create2_address] = Account(
balance=pre_existing_create2_balance,
nonce=1,
code=deploy_code,
storage={},
)
post: Dict[Address, Union[Account, object]] = {}
# Create2 address only exists if it was pre-existing and after cancun
post[create2_address] = (
Account(
balance=0,
nonce=1,
code=deploy_code,
storage={create2_constructor_worked: 0x00},
)
if create2_dest_already_in_state and fork >= Cancun
else (
Account.NONEXISTENT
if call_create2_contract_at_the_end
else Account(balance=1000, nonce=1, code=deploy_code)
)
)
# after Cancun Create2 initcode is only executed if the contract did not
# already exist and before it will always be executed as the first tx
# deletes the account
post[address_create2_storage] = Account(
storage={
create2_constructor_worked: int(
fork < Cancun or not create2_dest_already_in_state
)
}
)
# Entry code that makes the calls to the create2 contract creator
post[address_to] = Account(
storage={
code_worked: 0x01,
# First create2 only works if the contract was not preexisting
first_create2_result: 0x00
if create2_dest_already_in_state
else create2_address,
}
)
post[address_to_second] = Account(
storage={
code_worked: 0x01,
# Second create2 will not collide before Cancun as the first tx
# calls selfdestruct
#
# After cancun it will collide only if
# create2_dest_already_in_state otherwise the first tx creates and
# deletes it
second_create2_result: (
(0x00 if create2_dest_already_in_state else create2_address)
if fork >= Cancun
else create2_address
),
}
)
# Calculate the destination account expected balance for the
# selfdestruct/sendall calls
sendall_destination_balance = 0
if create2_dest_already_in_state:
sendall_destination_balance += pre_existing_create2_balance
if fork >= Cancun:
# first create2 fails, but first calls ok. the account is not
# removed on cancun therefore with the second create2 it is not
# successful
sendall_destination_balance += first_call_value
else:
# first create2 fails, first calls totally removes the account
# in the second transaction second create2 is successful
sendall_destination_balance += first_call_value
if call_create2_contract_at_the_end:
sendall_destination_balance += second_create2_value
else:
# if no account in the state, first create2 successful, first call
# successful and removes because it is removed in the next transaction
# second create2 successful
sendall_destination_balance = first_create2_value + first_call_value
if call_create2_contract_at_the_end:
sendall_destination_balance += second_create2_value
if call_create2_contract_at_the_end:
sendall_destination_balance += second_call_value
post[sendall_destination] = Account(balance=sendall_destination_balance)
blockchain_test(
pre=pre,
post=post,
blocks=[
Block(
txs=[
Transaction(
to=address_to,
data=initcode,
gas_limit=5_000_000,
sender=sender,
),
Transaction(
to=address_to_second,
data=initcode,
gas_limit=5_000_000,
sender=sender,
),
]
)
],
)
|