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Code Issues Releases Wiki Activity

apps.fido_u2f: remember user confirmation only for 10 secs

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This commit is contained in:
Jan Pochyla 2017-06-07 13:55:32 +02:00
parent a56877bef3
commit a18b883249
1 changed files with 11 additions and 1 deletions
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12
src/apps/fido_u2f/__init__.py
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@ -429,16 +429,20 @@ class ConfirmContent(ui.Widget):
ui.display.text_center(120, 185, self.app_name, ui.MONO, ui.WHITE, ui.BLACK)
_CONFIRM_STATE_TIMEOUT_MS = const(10 * 1000)
class ConfirmState:
def __init__(self, action: int, app_id: bytes):
self.action = action
self.app_id = app_id
self.deadline_ms = None
self.confirmed = None
self.task = None
def fork(self):
# TODO: kill task after timeout
self.deadline_ms = utime.ticks_ms() + _CONFIRM_STATE_TIMEOUT_MS
self.task = self.confirm()
workflow.start(self.task)
@ -485,6 +489,9 @@ def msg_register(req: Msg) -> Cmd:
_lastreq = req
# wait for a button or continue
if _state is not None and utime.ticks_ms() > _state.deadline_ms:
_state.kill()
_state = None
if _state is None:
_state = ConfirmState(_CONFIRM_REGISTER, app_id)
_state.fork()
@ -596,6 +603,9 @@ def msg_authenticate(req: Msg) -> Cmd:
_lastreq = req
# wait for a button or continue
if _state is not None and utime.ticks_ms() > _state.deadline_ms:
_state.kill()
_state = None
if _state is None:
_state = ConfirmState(_CONFIRM_AUTHENTICATE, auth.appId)
_state.fork()