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trezor-firmware/tests/device_tests/test_protect_call.py

131 lines
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# This file is part of the Trezor project.
#
# Copyright (C) 2012-2019 SatoshiLabs and contributors
#
# This library is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3
# as published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the License along with this library.
# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
import time
import pytest
from trezorlib import messages as proto
from trezorlib.exceptions import PinException
# FIXME TODO Add passphrase tests
@pytest.mark.skip_t2
class TestProtectCall:
def _some_protected_call(self, client, button, pin, passphrase):
# This method perform any call which have protection in the device
res = client.ping(
"random data",
button_protection=button,
pin_protection=pin,
passphrase_protection=passphrase,
)
assert res == "random data"
@pytest.mark.setup_client(pin="1234", passphrase=True)
def test_expected_responses(self, client):
# This is low-level test of set_expected_responses()
# feature of debugging client
with pytest.raises(AssertionError), client:
# Scenario 1 - Received unexpected message
client.set_expected_responses([])
self._some_protected_call(client, True, True, True)
with pytest.raises(AssertionError), client:
# Scenario 2 - Received other than expected message
client.set_expected_responses([proto.Success()])
self._some_protected_call(client, True, True, True)
with pytest.raises(AssertionError), client:
# Scenario 3 - Not received expected message
client.set_expected_responses(
[proto.ButtonRequest(), proto.Success(), proto.Success()]
) # This is expected, but not received
self._some_protected_call(client, True, False, False)
with pytest.raises(AssertionError), client:
# Scenario 4 - Received what expected
client.set_expected_responses(
[
proto.ButtonRequest(),
proto.PinMatrixRequest(),
proto.PassphraseRequest(),
proto.Success(message="random data"),
]
)
self._some_protected_call(client, True, True, True)
with pytest.raises(AssertionError), client:
# Scenario 5 - Failed message by field filter
client.set_expected_responses(
[proto.ButtonRequest(), proto.Success(message="wrong data")]
)
self._some_protected_call(client, True, True, True)
def test_no_protection(self, client):
with client:
assert client.debug.read_pin()[0] is None
client.set_expected_responses([proto.Success()])
self._some_protected_call(client, False, True, True)
@pytest.mark.setup_client(pin="1234", passphrase=True)
def test_pin(self, client):
with client:
assert client.debug.read_pin()[0] == "1234"
client.setup_debuglink(button=True, pin_correct=True)
client.set_expected_responses(
[proto.ButtonRequest(), proto.PinMatrixRequest(), proto.Success()]
)
self._some_protected_call(client, True, True, False)
@pytest.mark.setup_client(pin="1234", passphrase=True)
def test_incorrect_pin(self, client):
client.setup_debuglink(button=True, pin_correct=False)
with pytest.raises(PinException):
self._some_protected_call(client, False, True, False)
@pytest.mark.setup_client(pin="1234", passphrase=True)
def test_cancelled_pin(self, client):
client.setup_debuglink(button=True, pin_correct=False) # PIN cancel
with pytest.raises(PinException):
self._some_protected_call(client, False, True, False)
@pytest.mark.setup_client(pin="1234", passphrase=True)
def test_exponential_backoff_with_reboot(self, client):
client.setup_debuglink(button=True, pin_correct=False)
def test_backoff(attempts, start):
if attempts <= 1:
expected = 0
else:
expected = (2 ** (attempts - 1)) - 1
got = round(time.time() - start, 2)
msg = "Pin delay expected to be at least %s seconds, got %s" % (
expected,
got,
)
print(msg)
assert got >= expected
for attempt in range(1, 4):
start = time.time()
with pytest.raises(PinException):
self._some_protected_call(client, False, True, False)
test_backoff(attempt, start)