# This file is part of the Trezor project. # # Copyright (C) 2012-2018 SatoshiLabs and contributors # # This library is free software: you can redistribute it and/or modify # it under the terms of the GNU Lesser General Public License version 3 # as published by the Free Software Foundation. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Lesser General Public License for more details. # # You should have received a copy of the License along with this library. # If not, see . import functools import logging import sys import warnings from . import ( btc, cosi, device, ethereum, exceptions, firmware, lisk, mapping, messages as proto, misc, nem, stellar, tools, ) if sys.version_info.major < 3: raise Exception("Trezorlib does not support Python 2 anymore.") SCREENSHOT = False LOG = logging.getLogger(__name__) PinException = exceptions.PinException def get_buttonrequest_value(code): # Converts integer code to its string representation of ButtonRequestType return [ k for k in dir(proto.ButtonRequestType) if getattr(proto.ButtonRequestType, k) == code ][0] class MovedTo: """Deprecation redirector for methods that were formerly part of TrezorClient""" def __init__(self, where): self.where = where self.name = where.__module__ + "." + where.__name__ def _deprecated_redirect(self, client, *args, **kwargs): """Redirector for a deprecated method on TrezorClient""" warnings.warn( "Function has been moved to %s" % self.name, DeprecationWarning, stacklevel=2, ) return self.where(client, *args, **kwargs) def __get__(self, instance, cls): if instance is None: return self._deprecated_redirect else: return functools.partial(self._deprecated_redirect, instance) class BaseClient(object): # Implements very basic layer of sending raw protobuf # messages to device and getting its response back. def __init__(self, transport, ui, **kwargs): LOG.info("creating client instance for device: {}".format(transport.get_path())) self.transport = transport self.ui = ui super(BaseClient, self).__init__() # *args, **kwargs) def close(self): pass def cancel(self): self._raw_write(proto.Cancel()) @tools.session def call_raw(self, msg): __tracebackhide__ = True # for pytest # pylint: disable=W0612 self._raw_write(msg) return self._raw_read() def _raw_write(self, msg): __tracebackhide__ = True # for pytest # pylint: disable=W0612 self.transport.write(msg) def _raw_read(self): __tracebackhide__ = True # for pytest # pylint: disable=W0612 return self.transport.read() def callback_PinMatrixRequest(self, msg): pin = self.ui.get_pin(msg.type) if not pin.isdigit(): raise ValueError("Non-numeric PIN provided") resp = self.call_raw(proto.PinMatrixAck(pin=pin)) if isinstance(resp, proto.Failure) and resp.code in ( proto.FailureType.PinInvalid, proto.FailureType.PinCancelled, proto.FailureType.PinExpected, ): raise exceptions.PinException(resp.code, resp.message) else: return resp def callback_PassphraseRequest(self, msg): if msg.on_device: passphrase = None else: passphrase = self.ui.get_passphrase() state_request = self.call_raw(proto.PassphraseAck(passphrase=passphrase)) if not isinstance(state_request, proto.PassphraseStateRequest): raise exceptions.TrezorException("Passphrase state missing") self.state = state_request.state return self.call_raw(proto.PassphraseStateAck()) def callback_ButtonRequest(self, msg): __tracebackhide__ = True # for pytest # pylint: disable=W0612 # do this raw - send ButtonAck first, notify UI later self._raw_write(proto.ButtonAck()) self.ui.button_request(msg.code) return self._raw_read() @tools.session def call(self, msg): resp = self.call_raw(msg) while True: handler_name = "callback_{}".format(resp.__class__.__name__) handler = getattr(self, handler_name, None) if handler is None: break resp = handler(resp) # pylint: disable=E1102 if isinstance(resp, proto.Failure): if resp.code == proto.FailureType.ActionCancelled: raise exceptions.Cancelled raise exceptions.TrezorFailure(resp) return resp def register_message(self, msg): """Allow application to register custom protobuf message type""" mapping.register_message(msg) class ProtocolMixin(object): VENDORS = ("bitcointrezor.com", "trezor.io") def __init__(self, state=None, *args, **kwargs): super(ProtocolMixin, self).__init__(*args, **kwargs) self.state = state self.init_device() def set_tx_api(self, tx_api): warnings.warn("set_tx_api is deprecated, use new arguments to sign_tx") def init_device(self): resp = self.call(proto.Initialize(state=self.state)) if not isinstance(resp, proto.Features): raise exceptions.TrezorException("Unexpected initial response") else: self.features = resp if str(self.features.vendor) not in self.VENDORS: raise RuntimeError("Unsupported device") @staticmethod def expand_path(n): warnings.warn( "expand_path is deprecated, use tools.parse_path", DeprecationWarning, stacklevel=2, ) return tools.parse_path(n) @tools.expect(proto.Success, field="message") def ping( self, msg, button_protection=False, pin_protection=False, passphrase_protection=False, ): msg = proto.Ping( message=msg, button_protection=button_protection, pin_protection=pin_protection, passphrase_protection=passphrase_protection, ) return self.call(msg) def get_device_id(self): return self.features.device_id @tools.expect(proto.Success, field="message") def clear_session(self): return self.call(proto.ClearSession()) # Device functionality wipe_device = MovedTo(device.wipe) recovery_device = MovedTo(device.recover) reset_device = MovedTo(device.reset) backup_device = MovedTo(device.backup) set_u2f_counter = MovedTo(device.set_u2f_counter) apply_settings = MovedTo(device.apply_settings) apply_flags = MovedTo(device.apply_flags) change_pin = MovedTo(device.change_pin) # Firmware functionality firmware_update = MovedTo(firmware.update) # BTC-like functionality get_public_node = MovedTo(btc.get_public_node) get_address = MovedTo(btc.get_address) sign_tx = MovedTo(btc.sign_tx) sign_message = MovedTo(btc.sign_message) verify_message = MovedTo(btc.verify_message) # CoSi functionality cosi_commit = MovedTo(cosi.commit) cosi_sign = MovedTo(cosi.sign) # Ethereum functionality ethereum_get_address = MovedTo(ethereum.get_address) ethereum_sign_tx = MovedTo(ethereum.sign_tx) ethereum_sign_message = MovedTo(ethereum.sign_message) ethereum_verify_message = MovedTo(ethereum.verify_message) # Lisk functionality lisk_get_address = MovedTo(lisk.get_address) lisk_get_public_key = MovedTo(lisk.get_public_key) lisk_sign_message = MovedTo(lisk.sign_message) lisk_verify_message = MovedTo(lisk.verify_message) lisk_sign_tx = MovedTo(lisk.sign_tx) # NEM functionality nem_get_address = MovedTo(nem.get_address) nem_sign_tx = MovedTo(nem.sign_tx) # Stellar functionality stellar_get_address = MovedTo(stellar.get_address) stellar_sign_transaction = MovedTo(stellar.sign_tx) # Miscellaneous cryptographic functionality get_entropy = MovedTo(misc.get_entropy) sign_identity = MovedTo(misc.sign_identity) get_ecdh_session_key = MovedTo(misc.get_ecdh_session_key) encrypt_keyvalue = MovedTo(misc.encrypt_keyvalue) decrypt_keyvalue = MovedTo(misc.decrypt_keyvalue) class TrezorClient(ProtocolMixin, BaseClient): def __init__(self, transport, *args, **kwargs): super().__init__(transport=transport, *args, **kwargs)