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"' 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 read_pin(self): self.transport.write(proto.DebugLinkGetState()) obj = self.transport.read_blocking() print "Read PIN:", obj.pin print "Read matrix:", obj.matrix return (obj.pin, obj.matrix) def read_pin_encoded(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 self.pin_func(pin_encoded) return pin_encoded def press_button(self, yes_no): print "Pressing", yes_no self.button_func(yes_no) self.transport.write(proto.DebugLinkDecision(yes_no=yes_no)) def press_yes(self): self.press_button(True) def press_no(self): self.press_button(False) def stop(self): self.transport.write(proto.DebugLinkStop())