mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-24 08:28:12 +00:00
525 lines
18 KiB
Python
525 lines
18 KiB
Python
# 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 <https://www.gnu.org/licenses/lgpl-3.0.html>.
|
|
|
|
import functools
|
|
import logging
|
|
import os
|
|
import sys
|
|
import time
|
|
import binascii
|
|
import hashlib
|
|
import unicodedata
|
|
import getpass
|
|
import warnings
|
|
|
|
from mnemonic import Mnemonic
|
|
|
|
from . import messages as proto
|
|
from . import btc, cosi, device, ethereum, firmware, lisk, misc, nem, stellar
|
|
from . import mapping
|
|
from . import tools
|
|
from . import debuglink
|
|
|
|
if sys.version_info.major < 3:
|
|
raise Exception("Trezorlib does not support Python 2 anymore.")
|
|
|
|
|
|
SCREENSHOT = False
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
# make a getch function
|
|
try:
|
|
import termios
|
|
import tty
|
|
# POSIX system. Create and return a getch that manipulates the tty.
|
|
# On Windows, termios will fail to import.
|
|
|
|
def getch():
|
|
fd = sys.stdin.fileno()
|
|
old_settings = termios.tcgetattr(fd)
|
|
try:
|
|
tty.setraw(fd)
|
|
ch = sys.stdin.read(1)
|
|
finally:
|
|
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
|
|
return ch
|
|
|
|
except ImportError:
|
|
# Windows system.
|
|
# Use msvcrt's getch function.
|
|
import msvcrt
|
|
|
|
def getch():
|
|
while True:
|
|
key = msvcrt.getch()
|
|
if key in (0x00, 0xe0):
|
|
# skip special keys: read the scancode and repeat
|
|
msvcrt.getch()
|
|
continue
|
|
return key.decode('latin1')
|
|
|
|
|
|
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 PinException(tools.CallException):
|
|
pass
|
|
|
|
|
|
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, **kwargs):
|
|
LOG.info("creating client instance for device: {}".format(transport.get_path()))
|
|
self.transport = transport
|
|
super(BaseClient, self).__init__() # *args, **kwargs)
|
|
|
|
def close(self):
|
|
pass
|
|
|
|
def cancel(self):
|
|
self.transport.write(proto.Cancel())
|
|
|
|
@tools.session
|
|
def call_raw(self, msg):
|
|
__tracebackhide__ = True # pytest traceback hiding - this function won't appear in tracebacks
|
|
self.transport.write(msg)
|
|
return self.transport.read()
|
|
|
|
@tools.session
|
|
def call(self, msg):
|
|
resp = self.call_raw(msg)
|
|
handler_name = "callback_%s" % resp.__class__.__name__
|
|
handler = getattr(self, handler_name, None)
|
|
|
|
if handler is not None:
|
|
msg = handler(resp)
|
|
if msg is None:
|
|
raise ValueError("Callback %s must return protobuf message, not None" % handler)
|
|
resp = self.call(msg)
|
|
|
|
return resp
|
|
|
|
def callback_Failure(self, msg):
|
|
if msg.code in (proto.FailureType.PinInvalid,
|
|
proto.FailureType.PinCancelled, proto.FailureType.PinExpected):
|
|
raise PinException(msg.code, msg.message)
|
|
|
|
raise tools.CallException(msg.code, msg.message)
|
|
|
|
def register_message(self, msg):
|
|
'''Allow application to register custom protobuf message type'''
|
|
mapping.register_message(msg)
|
|
|
|
|
|
class TextUIMixin(object):
|
|
# This class demonstrates easy test-based UI
|
|
# integration between the device and wallet.
|
|
# You can implement similar functionality
|
|
# by implementing your own GuiMixin with
|
|
# graphical widgets for every type of these callbacks.
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super(TextUIMixin, self).__init__(*args, **kwargs)
|
|
|
|
@staticmethod
|
|
def print(text):
|
|
print(text, file=sys.stderr)
|
|
|
|
def callback_ButtonRequest(self, msg):
|
|
# log("Sending ButtonAck for %s " % get_buttonrequest_value(msg.code))
|
|
return proto.ButtonAck()
|
|
|
|
def callback_RecoveryMatrix(self, msg):
|
|
if self.recovery_matrix_first_pass:
|
|
self.recovery_matrix_first_pass = False
|
|
self.print("Use the numeric keypad to describe positions. For the word list use only left and right keys.")
|
|
self.print("Use backspace to correct an entry. The keypad layout is:")
|
|
self.print(" 7 8 9 7 | 9")
|
|
self.print(" 4 5 6 4 | 6")
|
|
self.print(" 1 2 3 1 | 3")
|
|
while True:
|
|
character = getch()
|
|
if character in ('\x03', '\x04'):
|
|
return proto.Cancel()
|
|
|
|
if character in ('\x08', '\x7f'):
|
|
return proto.WordAck(word='\x08')
|
|
|
|
# ignore middle column if only 6 keys requested.
|
|
if msg.type == proto.WordRequestType.Matrix6 and character in ('2', '5', '8'):
|
|
continue
|
|
|
|
if character.isdigit():
|
|
return proto.WordAck(word=character)
|
|
|
|
def callback_PinMatrixRequest(self, msg):
|
|
if msg.type == proto.PinMatrixRequestType.Current:
|
|
desc = 'current PIN'
|
|
elif msg.type == proto.PinMatrixRequestType.NewFirst:
|
|
desc = 'new PIN'
|
|
elif msg.type == proto.PinMatrixRequestType.NewSecond:
|
|
desc = 'new PIN again'
|
|
else:
|
|
desc = 'PIN'
|
|
|
|
self.print("Use the numeric keypad to describe number positions. The layout is:")
|
|
self.print(" 7 8 9")
|
|
self.print(" 4 5 6")
|
|
self.print(" 1 2 3")
|
|
self.print("Please enter %s: " % desc)
|
|
pin = getpass.getpass('')
|
|
if not pin.isdigit():
|
|
raise ValueError('Non-numerical PIN provided')
|
|
return proto.PinMatrixAck(pin=pin)
|
|
|
|
def callback_PassphraseRequest(self, msg):
|
|
if msg.on_device is True:
|
|
return proto.PassphraseAck()
|
|
|
|
if os.getenv("PASSPHRASE") is not None:
|
|
self.print("Passphrase required. Using PASSPHRASE environment variable.")
|
|
passphrase = Mnemonic.normalize_string(os.getenv("PASSPHRASE"))
|
|
return proto.PassphraseAck(passphrase=passphrase)
|
|
|
|
self.print("Passphrase required: ")
|
|
passphrase = getpass.getpass('')
|
|
self.print("Confirm your Passphrase: ")
|
|
if passphrase == getpass.getpass(''):
|
|
passphrase = Mnemonic.normalize_string(passphrase)
|
|
return proto.PassphraseAck(passphrase=passphrase)
|
|
else:
|
|
self.print("Passphrase did not match! ")
|
|
exit()
|
|
|
|
def callback_PassphraseStateRequest(self, msg):
|
|
return proto.PassphraseStateAck()
|
|
|
|
def callback_WordRequest(self, msg):
|
|
if msg.type in (proto.WordRequestType.Matrix9,
|
|
proto.WordRequestType.Matrix6):
|
|
return self.callback_RecoveryMatrix(msg)
|
|
self.print("Enter one word of mnemonic: ")
|
|
word = input()
|
|
if self.expand:
|
|
word = self.mnemonic_wordlist.expand_word(word)
|
|
return proto.WordAck(word=word)
|
|
|
|
|
|
class DebugLinkMixin(object):
|
|
# This class implements automatic responses
|
|
# and other functionality for unit tests
|
|
# for various callbacks, created in order
|
|
# to automatically pass unit tests.
|
|
#
|
|
# This mixing should be used only for purposes
|
|
# of unit testing, because it will fail to work
|
|
# without special DebugLink interface provided
|
|
# by the device.
|
|
DEBUG = LOG.getChild('debug_link').debug
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super(DebugLinkMixin, self).__init__(*args, **kwargs)
|
|
self.debug = None
|
|
self.in_with_statement = 0
|
|
self.button_wait = 0
|
|
self.screenshot_id = 0
|
|
|
|
# Always press Yes and provide correct pin
|
|
self.setup_debuglink(True, True)
|
|
|
|
# Do not expect any specific response from device
|
|
self.expected_responses = None
|
|
|
|
# Use blank passphrase
|
|
self.set_passphrase('')
|
|
|
|
def close(self):
|
|
super(DebugLinkMixin, self).close()
|
|
if self.debug:
|
|
self.debug.close()
|
|
|
|
def set_debuglink(self, debug_transport):
|
|
self.debug = debuglink.DebugLink(debug_transport)
|
|
|
|
def set_buttonwait(self, secs):
|
|
self.button_wait = secs
|
|
|
|
def __enter__(self):
|
|
# For usage in with/expected_responses
|
|
self.in_with_statement += 1
|
|
return self
|
|
|
|
def __exit__(self, _type, value, traceback):
|
|
self.in_with_statement -= 1
|
|
|
|
if _type is not None:
|
|
# Another exception raised
|
|
return False
|
|
|
|
# return isinstance(value, TypeError)
|
|
# Evaluate missed responses in 'with' statement
|
|
if self.expected_responses is not None and len(self.expected_responses):
|
|
raise RuntimeError("Some of expected responses didn't come from device: %s" %
|
|
[repr(x) for x in self.expected_responses])
|
|
|
|
# Cleanup
|
|
self.expected_responses = None
|
|
return False
|
|
|
|
def set_expected_responses(self, expected):
|
|
if not self.in_with_statement:
|
|
raise RuntimeError("Must be called inside 'with' statement")
|
|
self.expected_responses = expected
|
|
|
|
def setup_debuglink(self, button, pin_correct):
|
|
self.button = button # True -> YES button, False -> NO button
|
|
self.pin_correct = pin_correct
|
|
|
|
def set_passphrase(self, passphrase):
|
|
self.passphrase = Mnemonic.normalize_string(passphrase)
|
|
|
|
def set_mnemonic(self, mnemonic):
|
|
self.mnemonic = Mnemonic.normalize_string(mnemonic).split(' ')
|
|
|
|
def call_raw(self, msg):
|
|
__tracebackhide__ = True # pytest traceback hiding - this function won't appear in tracebacks
|
|
|
|
if SCREENSHOT and self.debug:
|
|
from PIL import Image
|
|
layout = self.debug.read_layout()
|
|
im = Image.new("RGB", (128, 64))
|
|
pix = im.load()
|
|
for x in range(128):
|
|
for y in range(64):
|
|
rx, ry = 127 - x, 63 - y
|
|
if (ord(layout[rx + (ry / 8) * 128]) & (1 << (ry % 8))) > 0:
|
|
pix[x, y] = (255, 255, 255)
|
|
im.save('scr%05d.png' % self.screenshot_id)
|
|
self.screenshot_id += 1
|
|
|
|
resp = super(DebugLinkMixin, self).call_raw(msg)
|
|
self._check_request(resp)
|
|
return resp
|
|
|
|
def _check_request(self, msg):
|
|
__tracebackhide__ = True # pytest traceback hiding - this function won't appear in tracebacks
|
|
|
|
if self.expected_responses is not None:
|
|
try:
|
|
expected = self.expected_responses.pop(0)
|
|
except IndexError:
|
|
raise AssertionError(proto.FailureType.UnexpectedMessage,
|
|
"Got %s, but no message has been expected" % repr(msg))
|
|
|
|
if msg.__class__ != expected.__class__:
|
|
raise AssertionError(proto.FailureType.UnexpectedMessage,
|
|
"Expected %s, got %s" % (repr(expected), repr(msg)))
|
|
|
|
for field, value in expected.__dict__.items():
|
|
if value is None or value == []:
|
|
continue
|
|
if getattr(msg, field) != value:
|
|
raise AssertionError(proto.FailureType.UnexpectedMessage,
|
|
"Expected %s, got %s" % (repr(expected), repr(msg)))
|
|
|
|
def callback_ButtonRequest(self, msg):
|
|
self.DEBUG("ButtonRequest code: " + get_buttonrequest_value(msg.code))
|
|
|
|
self.DEBUG("Pressing button " + str(self.button))
|
|
if self.button_wait:
|
|
self.DEBUG("Waiting %d seconds " % self.button_wait)
|
|
time.sleep(self.button_wait)
|
|
self.debug.press_button(self.button)
|
|
return proto.ButtonAck()
|
|
|
|
def callback_PinMatrixRequest(self, msg):
|
|
if self.pin_correct:
|
|
pin = self.debug.read_pin_encoded()
|
|
else:
|
|
pin = '444222'
|
|
return proto.PinMatrixAck(pin=pin)
|
|
|
|
def callback_PassphraseRequest(self, msg):
|
|
self.DEBUG("Provided passphrase: '%s'" % self.passphrase)
|
|
return proto.PassphraseAck(passphrase=self.passphrase)
|
|
|
|
def callback_PassphraseStateRequest(self, msg):
|
|
return proto.PassphraseStateAck()
|
|
|
|
def callback_WordRequest(self, msg):
|
|
(word, pos) = self.debug.read_recovery_word()
|
|
if word != '':
|
|
return proto.WordAck(word=word)
|
|
if pos != 0:
|
|
return proto.WordAck(word=self.mnemonic[pos - 1])
|
|
|
|
raise RuntimeError("Unexpected call")
|
|
|
|
|
|
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()
|
|
self.tx_api = None
|
|
|
|
def set_tx_api(self, tx_api):
|
|
self.tx_api = tx_api
|
|
|
|
def init_device(self):
|
|
init_msg = proto.Initialize()
|
|
if self.state is not None:
|
|
init_msg.state = self.state
|
|
self.features = tools.expect(proto.Features)(self.call)(init_msg)
|
|
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
|
|
|
|
def _prepare_sign_tx(self, inputs, outputs):
|
|
tx = proto.TransactionType()
|
|
tx.inputs = inputs
|
|
tx.outputs = outputs
|
|
|
|
txes = {None: tx}
|
|
|
|
for inp in inputs:
|
|
if inp.prev_hash in txes:
|
|
continue
|
|
|
|
if inp.script_type in (proto.InputScriptType.SPENDP2SHWITNESS,
|
|
proto.InputScriptType.SPENDWITNESS):
|
|
continue
|
|
|
|
if not self.tx_api:
|
|
raise RuntimeError('TX_API not defined')
|
|
|
|
prev_tx = self.tx_api.get_tx(binascii.hexlify(inp.prev_hash).decode('utf-8'))
|
|
txes[inp.prev_hash] = prev_tx
|
|
|
|
return txes
|
|
|
|
@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)
|
|
|
|
# debugging
|
|
load_device_by_mnemonic = MovedTo(debuglink.load_device_by_mnemonic)
|
|
load_device_by_xprv = MovedTo(debuglink.load_device_by_xprv)
|
|
self_test = MovedTo(debuglink.self_test)
|
|
|
|
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_public_key = MovedTo(stellar.get_public_key)
|
|
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, TextUIMixin, BaseClient):
|
|
def __init__(self, transport, *args, **kwargs):
|
|
super().__init__(transport=transport, *args, **kwargs)
|
|
|
|
|
|
class TrezorClientDebugLink(ProtocolMixin, DebugLinkMixin, BaseClient):
|
|
def __init__(self, transport, *args, **kwargs):
|
|
super().__init__(transport=transport, *args, **kwargs)
|