mirror of
https://github.com/LBRYFoundation/LBRY-Vault.git
synced 2025-08-23 17:47:31 +00:00
456 lines
19 KiB
Python
456 lines
19 KiB
Python
from binascii import hexlify, unhexlify
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import traceback
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import sys
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from typing import NamedTuple, Any, Optional, Dict, Union, List, Tuple, TYPE_CHECKING
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from electrum.util import bfh, bh2u, versiontuple, UserCancelled, UserFacingException
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from electrum.bitcoin import TYPE_ADDRESS, TYPE_SCRIPT
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from electrum.bip32 import BIP32Node
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from electrum import constants
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from electrum.i18n import _
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from electrum.plugin import Device
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from electrum.transaction import Transaction, PartialTransaction, PartialTxInput, PartialTxOutput
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from electrum.keystore import Hardware_KeyStore
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from electrum.base_wizard import ScriptTypeNotSupported
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from ..hw_wallet import HW_PluginBase
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from ..hw_wallet.plugin import (is_any_tx_output_on_change_branch, trezor_validate_op_return_output_and_get_data,
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get_xpubs_and_der_suffixes_from_txinout)
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if TYPE_CHECKING:
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from .client import SafeTClient
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# Safe-T mini initialization methods
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TIM_NEW, TIM_RECOVER, TIM_MNEMONIC, TIM_PRIVKEY = range(0, 4)
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class SafeTKeyStore(Hardware_KeyStore):
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hw_type = 'safe_t'
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device = 'Safe-T mini'
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plugin: 'SafeTPlugin'
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def get_client(self, force_pair=True):
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return self.plugin.get_client(self, force_pair)
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def decrypt_message(self, sequence, message, password):
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raise UserFacingException(_('Encryption and decryption are not implemented by {}').format(self.device))
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def sign_message(self, sequence, message, password):
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client = self.get_client()
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address_path = self.get_derivation_prefix() + "/%d/%d"%sequence
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address_n = client.expand_path(address_path)
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msg_sig = client.sign_message(self.plugin.get_coin_name(), address_n, message)
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return msg_sig.signature
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def sign_transaction(self, tx, password):
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if tx.is_complete():
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return
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# previous transactions used as inputs
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prev_tx = {}
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for txin in tx.inputs():
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tx_hash = txin.prevout.txid.hex()
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if txin.utxo is None and not Transaction.is_segwit_input(txin):
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raise UserFacingException(_('Missing previous tx for legacy input.'))
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prev_tx[tx_hash] = txin.utxo
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self.plugin.sign_transaction(self, tx, prev_tx)
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class SafeTPlugin(HW_PluginBase):
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# Derived classes provide:
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#
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# class-static variables: client_class, firmware_URL, handler_class,
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# libraries_available, libraries_URL, minimum_firmware,
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# wallet_class, types
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firmware_URL = 'https://safe-t.io'
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libraries_URL = 'https://github.com/archos-safe-t/python-safet'
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minimum_firmware = (1, 0, 5)
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keystore_class = SafeTKeyStore
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minimum_library = (0, 1, 0)
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SUPPORTED_XTYPES = ('standard', 'p2wpkh-p2sh', 'p2wpkh', 'p2wsh-p2sh', 'p2wsh')
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MAX_LABEL_LEN = 32
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def __init__(self, parent, config, name):
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HW_PluginBase.__init__(self, parent, config, name)
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self.libraries_available = self.check_libraries_available()
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if not self.libraries_available:
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return
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from . import client
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from . import transport
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import safetlib.messages
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self.client_class = client.SafeTClient
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self.types = safetlib.messages
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self.DEVICE_IDS = ('Safe-T mini',)
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self.transport_handler = transport.SafeTTransport()
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self.device_manager().register_enumerate_func(self.enumerate)
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def get_library_version(self):
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import safetlib
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try:
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return safetlib.__version__
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except AttributeError:
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return 'unknown'
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def enumerate(self):
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devices = self.transport_handler.enumerate_devices()
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return [Device(path=d.get_path(),
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interface_number=-1,
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id_=d.get_path(),
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product_key='Safe-T mini',
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usage_page=0,
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transport_ui_string=d.get_path())
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for d in devices]
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def create_client(self, device, handler):
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try:
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self.logger.info(f"connecting to device at {device.path}")
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transport = self.transport_handler.get_transport(device.path)
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except BaseException as e:
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self.logger.info(f"cannot connect at {device.path} {e}")
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return None
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if not transport:
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self.logger.info(f"cannot connect at {device.path}")
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return
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self.logger.info(f"connected to device at {device.path}")
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client = self.client_class(transport, handler, self)
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# Try a ping for device sanity
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try:
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client.ping('t')
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except BaseException as e:
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self.logger.info(f"ping failed {e}")
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return None
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if not client.atleast_version(*self.minimum_firmware):
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msg = (_('Outdated {} firmware for device labelled {}. Please '
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'download the updated firmware from {}')
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.format(self.device, client.label(), self.firmware_URL))
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self.logger.info(msg)
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if handler:
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handler.show_error(msg)
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else:
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raise UserFacingException(msg)
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return None
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return client
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def get_client(self, keystore, force_pair=True) -> Optional['SafeTClient']:
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devmgr = self.device_manager()
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handler = keystore.handler
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with devmgr.hid_lock:
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client = devmgr.client_for_keystore(self, handler, keystore, force_pair)
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# returns the client for a given keystore. can use xpub
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if client:
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client.used()
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return client
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def get_coin_name(self):
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return "Testnet" if constants.net.TESTNET else "Bitcoin"
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def initialize_device(self, device_id, wizard, handler):
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# Initialization method
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msg = _("Choose how you want to initialize your {}.\n\n"
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"The first two methods are secure as no secret information "
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"is entered into your computer.\n\n"
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"For the last two methods you input secrets on your keyboard "
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"and upload them to your {}, and so you should "
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"only do those on a computer you know to be trustworthy "
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"and free of malware."
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).format(self.device, self.device)
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choices = [
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# Must be short as QT doesn't word-wrap radio button text
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(TIM_NEW, _("Let the device generate a completely new seed randomly")),
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(TIM_RECOVER, _("Recover from a seed you have previously written down")),
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(TIM_MNEMONIC, _("Upload a BIP39 mnemonic to generate the seed")),
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(TIM_PRIVKEY, _("Upload a master private key"))
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]
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def f(method):
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import threading
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settings = self.request_safe_t_init_settings(wizard, method, self.device)
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t = threading.Thread(target=self._initialize_device_safe, args=(settings, method, device_id, wizard, handler))
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t.setDaemon(True)
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t.start()
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exit_code = wizard.loop.exec_()
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if exit_code != 0:
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# this method (initialize_device) was called with the expectation
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# of leaving the device in an initialized state when finishing.
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# signal that this is not the case:
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raise UserCancelled()
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wizard.choice_dialog(title=_('Initialize Device'), message=msg, choices=choices, run_next=f)
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def _initialize_device_safe(self, settings, method, device_id, wizard, handler):
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exit_code = 0
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try:
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self._initialize_device(settings, method, device_id, wizard, handler)
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except UserCancelled:
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exit_code = 1
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except BaseException as e:
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self.logger.exception('')
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handler.show_error(repr(e))
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exit_code = 1
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finally:
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wizard.loop.exit(exit_code)
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def _initialize_device(self, settings, method, device_id, wizard, handler):
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item, label, pin_protection, passphrase_protection = settings
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if method == TIM_RECOVER:
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handler.show_error(_(
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"You will be asked to enter 24 words regardless of your "
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"seed's actual length. If you enter a word incorrectly or "
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"misspell it, you cannot change it or go back - you will need "
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"to start again from the beginning.\n\nSo please enter "
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"the words carefully!"),
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blocking=True)
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language = 'english'
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devmgr = self.device_manager()
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client = devmgr.client_by_id(device_id)
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if not client:
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raise Exception(_("The device was disconnected."))
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if method == TIM_NEW:
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strength = 64 * (item + 2) # 128, 192 or 256
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u2f_counter = 0
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skip_backup = False
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client.reset_device(True, strength, passphrase_protection,
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pin_protection, label, language,
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u2f_counter, skip_backup)
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elif method == TIM_RECOVER:
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word_count = 6 * (item + 2) # 12, 18 or 24
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client.step = 0
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client.recovery_device(word_count, passphrase_protection,
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pin_protection, label, language)
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elif method == TIM_MNEMONIC:
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pin = pin_protection # It's the pin, not a boolean
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client.load_device_by_mnemonic(str(item), pin,
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passphrase_protection,
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label, language)
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else:
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pin = pin_protection # It's the pin, not a boolean
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client.load_device_by_xprv(item, pin, passphrase_protection,
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label, language)
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def _make_node_path(self, xpub, address_n):
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bip32node = BIP32Node.from_xkey(xpub)
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node = self.types.HDNodeType(
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depth=bip32node.depth,
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fingerprint=int.from_bytes(bip32node.fingerprint, 'big'),
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child_num=int.from_bytes(bip32node.child_number, 'big'),
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chain_code=bip32node.chaincode,
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public_key=bip32node.eckey.get_public_key_bytes(compressed=True),
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)
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return self.types.HDNodePathType(node=node, address_n=address_n)
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def setup_device(self, device_info, wizard, purpose):
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devmgr = self.device_manager()
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device_id = device_info.device.id_
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client = devmgr.client_by_id(device_id)
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if client is None:
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raise UserFacingException(_('Failed to create a client for this device.') + '\n' +
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_('Make sure it is in the correct state.'))
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# fixme: we should use: client.handler = wizard
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client.handler = self.create_handler(wizard)
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if not device_info.initialized:
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self.initialize_device(device_id, wizard, client.handler)
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client.get_xpub('m', 'standard')
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client.used()
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def get_xpub(self, device_id, derivation, xtype, wizard):
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if xtype not in self.SUPPORTED_XTYPES:
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raise ScriptTypeNotSupported(_('This type of script is not supported with {}.').format(self.device))
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devmgr = self.device_manager()
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client = devmgr.client_by_id(device_id)
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client.handler = wizard
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xpub = client.get_xpub(derivation, xtype)
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client.used()
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return xpub
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def get_safet_input_script_type(self, electrum_txin_type: str):
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if electrum_txin_type in ('p2wpkh', 'p2wsh'):
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return self.types.InputScriptType.SPENDWITNESS
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if electrum_txin_type in ('p2wpkh-p2sh', 'p2wsh-p2sh'):
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return self.types.InputScriptType.SPENDP2SHWITNESS
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if electrum_txin_type in ('p2pkh', ):
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return self.types.InputScriptType.SPENDADDRESS
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if electrum_txin_type in ('p2sh', ):
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return self.types.InputScriptType.SPENDMULTISIG
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raise ValueError('unexpected txin type: {}'.format(electrum_txin_type))
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def get_safet_output_script_type(self, electrum_txin_type: str):
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if electrum_txin_type in ('p2wpkh', 'p2wsh'):
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return self.types.OutputScriptType.PAYTOWITNESS
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if electrum_txin_type in ('p2wpkh-p2sh', 'p2wsh-p2sh'):
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return self.types.OutputScriptType.PAYTOP2SHWITNESS
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if electrum_txin_type in ('p2pkh', ):
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return self.types.OutputScriptType.PAYTOADDRESS
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if electrum_txin_type in ('p2sh', ):
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return self.types.OutputScriptType.PAYTOMULTISIG
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raise ValueError('unexpected txin type: {}'.format(electrum_txin_type))
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def sign_transaction(self, keystore, tx: PartialTransaction, prev_tx):
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self.prev_tx = prev_tx
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client = self.get_client(keystore)
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inputs = self.tx_inputs(tx, for_sig=True, keystore=keystore)
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outputs = self.tx_outputs(tx, keystore=keystore)
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signatures = client.sign_tx(self.get_coin_name(), inputs, outputs,
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lock_time=tx.locktime, version=tx.version)[0]
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signatures = [(bh2u(x) + '01') for x in signatures]
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tx.update_signatures(signatures)
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def show_address(self, wallet, address, keystore=None):
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if keystore is None:
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keystore = wallet.get_keystore()
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if not self.show_address_helper(wallet, address, keystore):
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return
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client = self.get_client(keystore)
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if not client.atleast_version(1, 0):
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keystore.handler.show_error(_("Your device firmware is too old"))
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return
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deriv_suffix = wallet.get_address_index(address)
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derivation = keystore.get_derivation_prefix()
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address_path = "%s/%d/%d"%(derivation, *deriv_suffix)
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address_n = client.expand_path(address_path)
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script_type = self.get_safet_input_script_type(wallet.txin_type)
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# prepare multisig, if available:
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xpubs = wallet.get_master_public_keys()
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if len(xpubs) > 1:
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pubkeys = wallet.get_public_keys(address)
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# sort xpubs using the order of pubkeys
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sorted_pairs = sorted(zip(pubkeys, xpubs))
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multisig = self._make_multisig(
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wallet.m,
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[(xpub, deriv_suffix) for pubkey, xpub in sorted_pairs])
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else:
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multisig = None
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client.get_address(self.get_coin_name(), address_n, True, multisig=multisig, script_type=script_type)
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def tx_inputs(self, tx: Transaction, *, for_sig=False, keystore: 'SafeTKeyStore' = None):
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inputs = []
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for txin in tx.inputs():
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txinputtype = self.types.TxInputType()
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if txin.is_coinbase():
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prev_hash = b"\x00"*32
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prev_index = 0xffffffff # signed int -1
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else:
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if for_sig:
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assert isinstance(tx, PartialTransaction)
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assert isinstance(txin, PartialTxInput)
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assert keystore
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xpubs_and_deriv_suffixes = get_xpubs_and_der_suffixes_from_txinout(tx, txin)
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multisig = self._make_multisig(txin.num_sig, xpubs_and_deriv_suffixes)
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script_type = self.get_safet_input_script_type(txin.script_type)
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txinputtype = self.types.TxInputType(
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script_type=script_type,
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multisig=multisig)
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my_pubkey, full_path = keystore.find_my_pubkey_in_txinout(txin)
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if full_path:
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txinputtype.address_n = full_path
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prev_hash = txin.prevout.txid
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prev_index = txin.prevout.out_idx
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if txin.value_sats() is not None:
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txinputtype.amount = txin.value_sats()
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txinputtype.prev_hash = prev_hash
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txinputtype.prev_index = prev_index
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if txin.script_sig is not None:
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txinputtype.script_sig = txin.script_sig
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txinputtype.sequence = txin.nsequence
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inputs.append(txinputtype)
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return inputs
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def _make_multisig(self, m, xpubs):
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if len(xpubs) == 1:
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return None
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pubkeys = [self._make_node_path(xpub, deriv) for xpub, deriv in xpubs]
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return self.types.MultisigRedeemScriptType(
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pubkeys=pubkeys,
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signatures=[b''] * len(pubkeys),
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m=m)
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def tx_outputs(self, tx: PartialTransaction, *, keystore: 'SafeTKeyStore' = None):
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def create_output_by_derivation():
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script_type = self.get_safet_output_script_type(txout.script_type)
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xpubs_and_deriv_suffixes = get_xpubs_and_der_suffixes_from_txinout(tx, txout)
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multisig = self._make_multisig(txout.num_sig, xpubs_and_deriv_suffixes)
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my_pubkey, full_path = keystore.find_my_pubkey_in_txinout(txout)
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assert full_path
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txoutputtype = self.types.TxOutputType(
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multisig=multisig,
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amount=txout.value,
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address_n=full_path,
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script_type=script_type)
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return txoutputtype
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def create_output_by_address():
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txoutputtype = self.types.TxOutputType()
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txoutputtype.amount = txout.value
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if address:
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txoutputtype.script_type = self.types.OutputScriptType.PAYTOADDRESS
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txoutputtype.address = address
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else:
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txoutputtype.script_type = self.types.OutputScriptType.PAYTOOPRETURN
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txoutputtype.op_return_data = trezor_validate_op_return_output_and_get_data(txout)
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return txoutputtype
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outputs = []
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has_change = False
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any_output_on_change_branch = is_any_tx_output_on_change_branch(tx)
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for txout in tx.outputs():
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address = txout.address
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use_create_by_derivation = False
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if txout.is_mine and not has_change:
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# prioritise hiding outputs on the 'change' branch from user
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# because no more than one change address allowed
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# note: ^ restriction can be removed once we require fw
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# that has https://github.com/trezor/trezor-mcu/pull/306
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if txout.is_change == any_output_on_change_branch:
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use_create_by_derivation = True
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has_change = True
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if use_create_by_derivation:
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txoutputtype = create_output_by_derivation()
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else:
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txoutputtype = create_output_by_address()
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outputs.append(txoutputtype)
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return outputs
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def electrum_tx_to_txtype(self, tx: Optional[Transaction]):
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t = self.types.TransactionType()
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if tx is None:
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# probably for segwit input and we don't need this prev txn
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return t
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tx.deserialize()
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t.version = tx.version
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t.lock_time = tx.locktime
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inputs = self.tx_inputs(tx)
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t._extend_inputs(inputs)
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for out in tx.outputs():
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o = t._add_bin_outputs()
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o.amount = out.value
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o.script_pubkey = out.scriptpubkey
|
|
return t
|
|
|
|
# This function is called from the TREZOR libraries (via tx_api)
|
|
def get_tx(self, tx_hash):
|
|
tx = self.prev_tx[tx_hash]
|
|
return self.electrum_tx_to_txtype(tx)
|