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@ -184,8 +184,11 @@ class DebugUI:
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def __init__(self, debuglink: DebugLink):
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self.debuglink = debuglink
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self.pin = None
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self.passphrase = "sphinx of black quartz, judge my wov"
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self.clear()
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def clear(self):
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self.pins = None
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self.passphrase = ""
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self.input_flow = None
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def button_request(self, code):
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@ -221,14 +224,14 @@ class DebugUI:
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self.input_flow = self.INPUT_FLOW_DONE
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def get_pin(self, code=None):
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if isinstance(self.pin, str):
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return self.debuglink.encode_pin(self.pin)
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elif self.pin == []:
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if self.pins is None:
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# respond with correct pin
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return self.debuglink.read_pin_encoded()
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if self.pins == []:
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raise AssertionError("PIN sequence ended prematurely")
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elif self.pin:
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return self.debuglink.encode_pin(self.pin.pop(0))
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else:
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return self.debuglink.read_pin_encoded()
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return self.debuglink.encode_pin(self.pins.pop(0))
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def get_passphrase(self, available_on_device):
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return self.passphrase
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@ -269,8 +272,6 @@ class TrezorClientDebugLink(TrezorClient):
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self.expected_responses = None
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self.current_response = None
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# Use blank passphrase
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self.set_passphrase("")
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super().__init__(transport, ui=self.ui)
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def open(self):
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@ -282,6 +283,15 @@ class TrezorClientDebugLink(TrezorClient):
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super().close()
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def set_filter(self, message_type, callback):
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"""Configure a filter function for a specified message type.
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The `callback` must be a function that accepts a protobuf message, and returns
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a (possibly modified) protobuf message of the same type. Whenever a message
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is sent or received that matches `message_type`, `callback` is invoked on the
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message and its result is substituted for the original.
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Useful for test scenarios with an active malicious actor on the wire.
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"""
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self.filters[message_type] = callback
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def _filter_message(self, msg):
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@ -293,10 +303,30 @@ class TrezorClientDebugLink(TrezorClient):
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return msg
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def set_input_flow(self, input_flow):
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if input_flow is None:
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self.ui.input_flow = None
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return
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"""Configure a sequence of input events for the current with-block.
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The `input_flow` must be a generator function. A `yield` statement in the
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input flow function waits for a ButtonRequest from the device, and returns
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its code.
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Example usage:
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>>> def input_flow():
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>>> # wait for first button prompt
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>>> code = yield
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>>> assert code == ButtonRequestType.Other
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>>> # press No
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>>> client.debug.press_no()
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>>>
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>>> # wait for second button prompt
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>>> yield
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>>> # press Yes
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>>> client.debug.press_yes()
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>>>
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>>> with client:
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>>> client.set_input_flow(input_flow)
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>>> some_call(client)
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"""
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if not self.in_with_statement:
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raise RuntimeError("Must be called inside 'with' statement")
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@ -331,29 +361,44 @@ class TrezorClientDebugLink(TrezorClient):
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finally:
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# Cleanup
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self.set_input_flow(None)
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self.expected_responses = None
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self.current_response = None
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self.ui.pin = None
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self.ui.clear()
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return False
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def set_expected_responses(self, expected):
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"""Set a sequence of expected responses to client calls.
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Within a given with-block, the list of received responses from device must
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match the list of expected responses, otherwise an AssertionError is raised.
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If an expected response is given a field value other than None, that field value
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must exactly match the received field value. If a given field is None
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(or unspecified) in the expected response, the received field value is not
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checked.
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"""
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if not self.in_with_statement:
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raise RuntimeError("Must be called inside 'with' statement")
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self.expected_responses = expected
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self.current_response = 0
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def set_pin(self, pin):
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if isinstance(pin, str):
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self.ui.pin = pin
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else:
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self.ui.pin = list(pin)
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def set_passphrase(self, passphrase):
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def use_pin_sequence(self, pins):
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"""Respond to PIN prompts from device with the provided PINs.
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The sequence must be at least as long as the expected number of PIN prompts.
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"""
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# XXX This currently only works on T1 as a response to PinMatrixRequest, but
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# if we modify trezor-core to introduce PIN prompts predictably (i.e. by
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# a new ButtonRequestType), it could also be used on TT via debug.input()
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self.ui.pins = list(pins)
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def use_passphrase(self, passphrase):
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"""Respond to passphrase prompts from device with the provided passphrase."""
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self.ui.passphrase = Mnemonic.normalize_string(passphrase)
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def set_mnemonic(self, mnemonic):
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def use_mnemonic(self, mnemonic):
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"""Use the provided mnemonic to respond to device.
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Only applies to T1, where device prompts the host for mnemonic words."""
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self.mnemonic = Mnemonic.normalize_string(mnemonic).split(" ")
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def _raw_read(self):
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matejcik
4 years ago