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146 lines
3.9 KiB
146 lines
3.9 KiB
import utime
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from typing import Any, NoReturn
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import storage.cache
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import storage.sd_salt
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from trezor import config, wire
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from .sdcard import SdCardUnavailable, request_sd_salt
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def can_lock_device() -> bool:
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"""Return True if the device has a PIN set or SD-protect enabled."""
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return config.has_pin() or storage.sd_salt.is_enabled()
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async def request_pin(
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ctx: wire.GenericContext,
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prompt: str = "Enter your PIN",
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attempts_remaining: int | None = None,
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allow_cancel: bool = True,
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) -> str:
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from trezor.ui.layouts import request_pin_on_device
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return await request_pin_on_device(ctx, prompt, attempts_remaining, allow_cancel)
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async def request_pin_confirm(ctx: wire.Context, *args: Any, **kwargs: Any) -> str:
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while True:
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pin1 = await request_pin(ctx, "Enter new PIN", *args, **kwargs)
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pin2 = await request_pin(ctx, "Re-enter new PIN", *args, **kwargs)
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if pin1 == pin2:
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return pin1
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await pin_mismatch()
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async def pin_mismatch() -> None:
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from trezor.ui.layouts import show_popup
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await show_popup(
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title="PIN mismatch",
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description="The PINs you entered\ndo not match.\n\nPlease try again.",
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)
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async def request_pin_and_sd_salt(
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ctx: wire.Context, prompt: str = "Enter your PIN", allow_cancel: bool = True
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) -> tuple[str, bytearray | None]:
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if config.has_pin():
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pin = await request_pin(ctx, prompt, config.get_pin_rem(), allow_cancel)
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config.ensure_not_wipe_code(pin)
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else:
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pin = ""
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salt = await request_sd_salt(ctx)
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return pin, salt
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def _set_last_unlock_time() -> None:
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now = utime.ticks_ms()
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storage.cache.set(
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storage.cache.APP_COMMON_REQUEST_PIN_LAST_UNLOCK, now.to_bytes(4, "big")
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)
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def _get_last_unlock_time() -> int:
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return int.from_bytes(
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storage.cache.get(storage.cache.APP_COMMON_REQUEST_PIN_LAST_UNLOCK, b""), "big"
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)
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async def verify_user_pin(
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ctx: wire.GenericContext = wire.DUMMY_CONTEXT,
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prompt: str = "Enter your PIN",
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allow_cancel: bool = True,
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retry: bool = True,
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cache_time_ms: int = 0,
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) -> None:
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last_unlock = _get_last_unlock_time()
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if (
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cache_time_ms
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and last_unlock
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and utime.ticks_ms() - last_unlock <= cache_time_ms
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and config.is_unlocked()
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):
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return
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if config.has_pin():
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from trezor.ui.layouts import request_pin_on_device
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pin = await request_pin_on_device(
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ctx, prompt, config.get_pin_rem(), allow_cancel
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)
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config.ensure_not_wipe_code(pin)
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else:
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pin = ""
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try:
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salt = await request_sd_salt(ctx)
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except SdCardUnavailable:
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raise wire.PinCancelled("SD salt is unavailable")
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if config.unlock(pin, salt):
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_set_last_unlock_time()
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return
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elif not config.has_pin():
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raise RuntimeError
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while retry:
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# request_pin_on_device possibly unbound
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pin = await request_pin_on_device( # type: ignore
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ctx, "Wrong PIN, enter again", config.get_pin_rem(), allow_cancel
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)
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if config.unlock(pin, salt):
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_set_last_unlock_time()
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return
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raise wire.PinInvalid
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async def error_pin_invalid(ctx: wire.Context) -> NoReturn:
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from trezor.ui.layouts import show_error_and_raise
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await show_error_and_raise(
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ctx,
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"warning_wrong_pin",
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header="Wrong PIN",
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content="The PIN you entered is invalid.",
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red=True,
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exc=wire.PinInvalid,
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)
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assert False
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async def error_pin_matches_wipe_code(ctx: wire.Context) -> NoReturn:
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from trezor.ui.layouts import show_error_and_raise
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await show_error_and_raise(
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ctx,
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"warning_invalid_new_pin",
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header="Invalid PIN",
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content="The new PIN must be different from your\nwipe code.",
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red=True,
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exc=wire.PinInvalid,
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)
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assert False
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