from __future__ import print_function from . import messages_pb2 as proto from .transport import NotImplementedException def pin_info(pin): print("Device asks for PIN %s" % pin) def button_press(yes_no): print("User pressed", '"y"' if yes_no else '"n"') def pprint(msg): return "<%s> (%d bytes):\n%s" % (msg.__class__.__name__, msg.ByteSize(), msg) class DebugLink(object): def __init__(self, transport, pin_func=pin_info, button_func=button_press): self.transport = transport self.pin_func = pin_func self.button_func = button_func def close(self): self.transport.close() def _call(self, msg, nowait=False): print("DEBUGLINK SEND", pprint(msg)) self.transport.write(msg) if nowait: return ret = self.transport.read_blocking() print("DEBUGLINK RECV", pprint(ret)) return ret def read_pin(self): obj = self._call(proto.DebugLinkGetState()) print("Read PIN:", obj.pin) print("Read matrix:", obj.matrix) return (obj.pin, obj.matrix) def read_pin_encoded(self): pin, _ = self.read_pin() pin_encoded = self.encode_pin(pin) self.pin_func(pin_encoded) return pin_encoded def encode_pin(self, pin): _, matrix = self.read_pin() # Now we have real PIN and PIN matrix. # We have to encode that into encoded pin, # because application must send back positions # on keypad, not a real PIN. pin_encoded = ''.join([str(matrix.index(p) + 1) for p in pin]) print("Encoded PIN:", pin_encoded) return pin_encoded def read_layout(self): obj = self._call(proto.DebugLinkGetState()) return obj.layout def read_mnemonic(self): obj = self._call(proto.DebugLinkGetState()) return obj.mnemonic def read_node(self): obj = self._call(proto.DebugLinkGetState()) return obj.node def read_recovery_word(self): obj = self._call(proto.DebugLinkGetState()) return (obj.recovery_fake_word, obj.recovery_word_pos) def read_reset_word(self): obj = self._call(proto.DebugLinkGetState()) return obj.reset_word def read_reset_entropy(self): obj = self._call(proto.DebugLinkGetState()) return obj.reset_entropy def read_passphrase_protection(self): obj = self._call(proto.DebugLinkGetState()) return obj.passphrase_protection def press_button(self, yes_no): print("Pressing", yes_no) self.button_func(yes_no) self._call(proto.DebugLinkDecision(yes_no=yes_no), nowait=True) def press_yes(self): self.press_button(True) def press_no(self): self.press_button(False) def stop(self): self._call(proto.DebugLinkStop(), nowait=True)