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Test Calldata

Documentation for tests/prague/eip7692_eof_v1/eip7069_extcall/test_calldata.py.

Generate fixtures for these test cases for Prague with:

Prague only: 

fill -v tests/prague/eip7692_eof_v1/eip7069_extcall/test_calldata.py --fork=Prague --evm-bin=/path/to/evm-tool-dev-version
For all forks up to and including Prague: 
fill -v tests/prague/eip7692_eof_v1/eip7069_extcall/test_calldata.py --until=Prague --evm-bin=/path/to/evm-tool-dev-version

Tests EIP-7069: Revamped CALL instructions

Tests for the RETURNDATALOAD instriction

test_extcalls_inputdata(state_test, pre, value, memory, offset, length)

Tests call data into EXT*CALL including multiple offset conditions.

Caller pushes data into memory, then calls the target. Target writes 64 bytes of call data to storage and a success byte.

Source code in tests/prague/eip7692_eof_v1/eip7069_extcall/test_calldata.py 
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@pytest.mark.parametrize("value", [0, 1])
@pytest.mark.parametrize(
    "memory",
    [
        b"",
        b"1234567890abcdef",
        b"1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ=-",
        b"1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ=-" * 4,
    ],
    ids=lambda x: "size_%d" % len(x),
)
@pytest.mark.parametrize("offset", [0, 8, 24, 80])
@pytest.mark.parametrize("length", [0, 8, 32, 48])
def test_extcalls_inputdata(
    state_test: StateTestFiller,
    pre: Alloc,
    value: int,
    memory: bytes,
    offset: int,
    length: int,
):
    """
    Tests call data into EXT*CALL including multiple offset conditions.

    Caller pushes data into memory, then calls the target.  Target writes 64 bytes of call data
    to storage and a success byte.
    """
    env = Environment()

    sender = pre.fund_eoa(10**18)

    address_returner = pre.deploy_contract(
        Container(
            sections=[
                Section.Code(
                    code=Op.SSTORE(slot_calldata_1, Op.CALLDATALOAD(0))
                    + Op.SSTORE(slot_calldata_2, Op.CALLDATALOAD(32))
                    + Op.SSTORE(slot_code_worked, value_code_worked)
                    + Op.STOP
                ),
            ]
        ),
    )
    address_caller = pre.deploy_contract(
        Container(
            sections=[
                Section.Code(
                    code=Op.DATACOPY(0, 0, len(memory))
                    + Op.SSTORE(
                        slot_call_status,
                        Op.EXTCALL(address_returner, offset, length, value),
                    )
                    + Op.SSTORE(slot_code_worked, value_code_worked)
                    + Op.STOP
                ),
                Section.Data(data=memory),
            ]
        ),
        storage={slot_call_status: value_exceptional_abort_canary},
        balance=10**9,
    )

    calldata = memory[offset : offset + length]
    post = {
        address_returner: Account(
            storage={
                slot_code_worked: value_code_worked,
                slot_calldata_1: right_pad_32(calldata[0:32]),
                slot_calldata_2: right_pad_32(calldata[32:64]),
            }
        ),
        address_caller: Account(
            storage={
                slot_code_worked: value_code_worked,
                slot_call_status: EXTCALL_SUCCESS,
            }
        ),
    }

    tx = Transaction(to=address_caller, gas_limit=2_000_000, sender=sender)

    state_test(
        env=env,
        pre=pre,
        tx=tx,
        post=post,
    )

test_extdelegatecall_inputdata(state_test, pre, memory, offset, length)

Tests call data into EXT*CALL including multiple offset conditions.

Caller pushes data into memory, then calls the target. Target writes 64 bytes of call data to storage and a success byte.

Source code in tests/prague/eip7692_eof_v1/eip7069_extcall/test_calldata.py 
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@pytest.mark.parametrize(
    "memory",
    [
        b"",
        b"1234567890abcdef",
        b"1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ=-",
        b"1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ=-" * 4,
    ],
    ids=lambda x: "size_%d" % len(x),
)
@pytest.mark.parametrize("offset", [0, 8, 24, 80])
@pytest.mark.parametrize("length", [0, 8, 32, 48])
def test_extdelegatecall_inputdata(
    state_test: StateTestFiller,
    pre: Alloc,
    memory: bytes,
    offset: int,
    length: int,
):
    """
    Tests call data into EXT*CALL including multiple offset conditions.

    Caller pushes data into memory, then calls the target.  Target writes 64 bytes of call data
    to storage and a success byte.
    """
    env = Environment()

    sender = pre.fund_eoa(10**18)

    address_returner = pre.deploy_contract(
        Container(
            sections=[
                Section.Code(
                    code=Op.SSTORE(slot_calldata_1, Op.CALLDATALOAD(0))
                    + Op.SSTORE(slot_calldata_2, Op.CALLDATALOAD(32))
                    + Op.SSTORE(slot_delegate_code_worked, value_code_worked)
                    + Op.STOP
                ),
            ]
        ),
    )
    address_caller = pre.deploy_contract(
        Container(
            sections=[
                Section.Code(
                    code=Op.DATACOPY(0, 0, len(memory))
                    + Op.SSTORE(
                        slot_call_status,
                        Op.EXTDELEGATECALL(address_returner, offset, length),
                    )
                    + Op.SSTORE(slot_code_worked, value_code_worked)
                    + Op.STOP
                ),
                Section.Data(data=memory),
            ]
        ),
        storage={slot_call_status: value_exceptional_abort_canary},
        balance=10**9,
    )

    calldata = memory[offset : offset + length]
    post = {
        address_returner: Account(storage={}),
        address_caller: Account(
            storage={
                slot_code_worked: value_code_worked,
                slot_delegate_code_worked: value_code_worked,
                slot_call_status: EXTCALL_SUCCESS,
                slot_calldata_1: right_pad_32(calldata[0:32]),
                slot_calldata_2: right_pad_32(calldata[32:64]),
            }
        ),
    }

    tx = Transaction(to=address_caller, gas_limit=2_000_000, sender=sender)

    state_test(
        env=env,
        pre=pre,
        tx=tx,
        post=post,
    )

test_extstaticcall_inputdata(state_test, pre, memory, offset, length)

Tests call data into EXT*CALL including multiple offset conditions.

Caller pushes data into memory, then calls the target. Target writes 64 bytes of call data to storage and a success byte.

Source code in tests/prague/eip7692_eof_v1/eip7069_extcall/test_calldata.py 
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@pytest.mark.parametrize(
    "memory",
    [
        b"",
        b"1234567890abcdef",
        b"1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ=-",
        b"1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ=-" * 4,
    ],
    ids=lambda x: "size_%d" % len(x),
)
@pytest.mark.parametrize("offset", [0, 8, 24, 80])
@pytest.mark.parametrize("length", [0, 8, 32, 48])
def test_extstaticcall_inputdata(
    state_test: StateTestFiller,
    pre: Alloc,
    memory: bytes,
    offset: int,
    length: int,
):
    """
    Tests call data into EXT*CALL including multiple offset conditions.

    Caller pushes data into memory, then calls the target.  Target writes 64 bytes of call data
    to storage and a success byte.
    """
    env = Environment()

    sender = pre.fund_eoa(10**18)

    address_returner = pre.deploy_contract(
        Container(
            sections=[
                Section.Code(
                    code=Op.CALLDATACOPY(0, 0, Op.CALLDATASIZE) + Op.RETURN(0, Op.CALLDATASIZE)
                ),
            ]
        ),
    )
    address_caller = pre.deploy_contract(
        Container(
            sections=[
                Section.Code(
                    code=Op.DATACOPY(0, 0, len(memory))
                    + Op.SSTORE(
                        slot_call_status,
                        Op.EXTSTATICCALL(address_returner, offset, length),
                    )
                    + Op.SSTORE(slot_calldata_1, Op.RETURNDATALOAD(0))
                    + Op.SSTORE(slot_calldata_2, Op.RETURNDATALOAD(32))
                    + Op.SSTORE(slot_code_worked, value_code_worked)
                    + Op.STOP
                ),
                Section.Data(data=memory),
            ]
        ),
        storage={slot_call_status: value_exceptional_abort_canary},
        balance=10**9,
    )

    calldata = memory[offset : offset + length]
    post = {
        address_returner: Account(storage={}),
        address_caller: Account(
            storage={
                slot_code_worked: value_code_worked,
                slot_call_status: EXTCALL_SUCCESS,
                slot_calldata_1: right_pad_32(calldata[0:32]),
                slot_calldata_2: right_pad_32(calldata[32:64]),
            }
        ),
    }

    tx = Transaction(to=address_caller, gas_limit=2_000_000, sender=sender)

    state_test(
        env=env,
        pre=pre,
        tx=tx,
        post=post,
    )

test_calldata_remains_after_subcall(state_test, pre, opcode)

Tests call data remains after a call to another contract.

Caller pushes data into memory, then calls the target. Target calls 3rd contract. 3rd contract returns. Target writes calldata to storage.

Source code in tests/prague/eip7692_eof_v1/eip7069_extcall/test_calldata.py 
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@pytest.mark.parametrize(
    "opcode",
    [
        Op.CALL,
        Op.CALLCODE,
        Op.DELEGATECALL,
        Op.STATICCALL,
        Op.EXTCALL,
        Op.EXTDELEGATECALL,
        Op.EXTSTATICCALL,
    ],
)
def test_calldata_remains_after_subcall(
    state_test: StateTestFiller,
    pre: Alloc,
    opcode: Op,
):
    """
    Tests call data remains after a call to another contract.

    Caller pushes data into memory, then calls the target.  Target calls 3rd contract. 3rd contract
    returns. Target writes calldata to storage.
    """
    env = Environment()

    sender = pre.fund_eoa(10**18)

    address_sub_called = pre.deploy_contract(
        Container(
            sections=[
                Section.Code(
                    code=Op.SSTORE(slot_delegate_code_worked, value_code_worked) + Op.STOP
                )
            ]
        ),
        storage={slot_delegate_code_worked: value_exceptional_abort_canary},
    )
    called_code = (
        Op.MSTORE(0, value_calldata_2)
        + Op.SSTORE(slot_call_status, value_exceptional_abort_canary)
        + Op.SSTORE(slot_calldata_1, value_exceptional_abort_canary)
        + Op.SSTORE(slot_code_worked, value_exceptional_abort_canary)
        + Op.SSTORE(
            slot_call_status,
            opcode(
                address=address_sub_called,
                args_offset=0,
                args_size=size_calldata,
            ),
        )
        + Op.SSTORE(slot_calldata_1, Op.CALLDATALOAD(0))
        + Op.SSTORE(slot_code_worked, value_code_worked)
        + Op.STOP
    )
    match opcode:
        case Op.CALL | Op.CALLCODE | Op.DELEGATECALL | Op.STATICCALL:
            address_called = pre.deploy_contract(code=called_code)
        case Op.EXTCALL | Op.EXTDELEGATECALL | Op.EXTSTATICCALL:
            address_called = pre.deploy_contract(
                Container(
                    sections=[
                        Section.Code(code=called_code),
                    ]
                ),
            )
    address_caller = pre.deploy_contract(
        Container(
            sections=[
                Section.Code(
                    code=Op.MSTORE(0, value_calldata_1)
                    + Op.SSTORE(slot_calldata_1, value_exceptional_abort_canary)
                    + Op.SSTORE(slot_code_worked, value_exceptional_abort_canary)
                    + Op.SSTORE(
                        slot_call_status,
                        Op.EXTCALL(address_called, 0, size_calldata, 0),
                    )
                    + Op.SSTORE(slot_calldata_1, Op.RETURNDATALOAD(0))
                    + Op.SSTORE(slot_code_worked, value_code_worked)
                    + Op.STOP
                ),
            ]
        ),
        storage={slot_call_status: value_exceptional_abort_canary},
        balance=10**9,
    )

    match opcode:
        case Op.STATICCALL:
            called_storage = {
                slot_code_worked: value_code_worked,
                slot_call_status: CALL_FAILURE,
                slot_calldata_1: value_calldata_1,
            }
            sub_called_storage = {
                slot_delegate_code_worked: value_exceptional_abort_canary,
            }
        case Op.DELEGATECALL | Op.CALLCODE:
            called_storage = {
                slot_code_worked: value_code_worked,
                slot_delegate_code_worked: value_code_worked,
                slot_call_status: CALL_SUCCESS,
                slot_calldata_1: value_calldata_1,
            }
            sub_called_storage = {
                slot_delegate_code_worked: value_exceptional_abort_canary,
            }
        case Op.CALL:
            called_storage = {
                slot_code_worked: value_code_worked,
                slot_call_status: CALL_SUCCESS,
                slot_calldata_1: value_calldata_1,
            }
            sub_called_storage = {
                slot_delegate_code_worked: value_code_worked,
            }
        case Op.EXTSTATICCALL:
            called_storage = {
                slot_code_worked: value_code_worked,
                slot_call_status: EXTCALL_FAILED,
                slot_calldata_1: value_calldata_1,
            }
            sub_called_storage = {
                slot_delegate_code_worked: value_exceptional_abort_canary,
            }
        case Op.EXTDELEGATECALL:
            called_storage = {
                slot_code_worked: value_code_worked,
                slot_delegate_code_worked: value_code_worked,
                slot_call_status: EXTCALL_SUCCESS,
                slot_calldata_1: value_calldata_1,
            }
            sub_called_storage = {
                slot_delegate_code_worked: value_exceptional_abort_canary,
            }
        case Op.EXTCALL:
            called_storage = {
                slot_code_worked: value_code_worked,
                slot_call_status: EXTCALL_SUCCESS,
                slot_calldata_1: value_calldata_1,
            }
            sub_called_storage = {
                slot_delegate_code_worked: value_code_worked,
            }
        case _:
            raise ValueError(f"Unexpected opcode: {opcode}")

    post = {
        address_caller: Account(storage={slot_code_worked: value_code_worked}),
        address_called: Account(storage=called_storage),
        address_sub_called: Account(storage=sub_called_storage),
    }

    tx = Transaction(to=address_caller, gas_limit=4_000_000, sender=sender)

    state_test(
        env=env,
        pre=pre,
        tx=tx,
        post=post,
    )