mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-12 18:49:07 +00:00
92 lines
2.6 KiB
Python
92 lines
2.6 KiB
Python
from concurrent.futures import ThreadPoolExecutor
|
|
|
|
from trezorlib.client import PASSPHRASE_ON_DEVICE
|
|
from trezorlib.transport import udp
|
|
|
|
udp.SOCKET_TIMEOUT = 0.1
|
|
|
|
|
|
class NullUI:
|
|
@staticmethod
|
|
def button_request(code):
|
|
pass
|
|
|
|
@staticmethod
|
|
def get_pin(code=None):
|
|
raise NotImplementedError("NullUI should not be used with T1")
|
|
|
|
@staticmethod
|
|
def get_passphrase(available_on_device=False):
|
|
if available_on_device:
|
|
return PASSPHRASE_ON_DEVICE
|
|
else:
|
|
raise NotImplementedError("NullUI should not be used with T1")
|
|
|
|
|
|
class BackgroundDeviceHandler:
|
|
_pool = ThreadPoolExecutor()
|
|
|
|
def __init__(self, client):
|
|
self._configure_client(client)
|
|
self.task = None
|
|
|
|
def _configure_client(self, client):
|
|
self.client = client
|
|
self.client.ui = NullUI
|
|
self.client.watch_layout(True)
|
|
|
|
def run(self, function, *args, **kwargs):
|
|
if self.task is not None:
|
|
raise RuntimeError("Wait for previous task first")
|
|
self.task = self._pool.submit(function, self.client, *args, **kwargs)
|
|
|
|
def kill_task(self):
|
|
if self.task is not None:
|
|
# Force close the client, which should raise an exception in a client
|
|
# waiting on IO. Does not work over Bridge, because bridge doesn't have
|
|
# a close() method.
|
|
while self.client.session_counter > 0:
|
|
self.client.close()
|
|
try:
|
|
self.task.result()
|
|
except Exception:
|
|
pass
|
|
self.task = None
|
|
|
|
def restart(self, emulator):
|
|
# TODO handle actual restart as well
|
|
self.kill_task()
|
|
emulator.restart()
|
|
self._configure_client(emulator.client)
|
|
|
|
def result(self):
|
|
if self.task is None:
|
|
raise RuntimeError("No task running")
|
|
try:
|
|
return self.task.result()
|
|
finally:
|
|
self.task = None
|
|
|
|
def features(self):
|
|
if self.task is not None:
|
|
raise RuntimeError("Cannot query features while task is running")
|
|
self.client.init_device()
|
|
return self.client.features
|
|
|
|
def debuglink(self):
|
|
return self.client.debug
|
|
|
|
def check_finalize(self):
|
|
if self.task is not None:
|
|
self.kill_task()
|
|
return False
|
|
return True
|
|
|
|
def __enter__(self):
|
|
return self
|
|
|
|
def __exit__(self, exc_type, exc_value, traceback):
|
|
finalized_ok = self.check_finalize()
|
|
if exc_type is None and not finalized_ok:
|
|
raise RuntimeError("Exit while task is unfinished")
|