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557 lines
24 KiB
557 lines
24 KiB
# -*- coding: utf-8 -*-
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#
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# Electrum - lightweight Bitcoin client
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# Copyright (C) 2016 Thomas Voegtlin
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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import os
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import sys
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import traceback
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from functools import partial
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from . import bitcoin
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from . import keystore
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from .keystore import bip44_derivation, purpose48_derivation
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from .wallet import Imported_Wallet, Standard_Wallet, Multisig_Wallet, wallet_types, Wallet
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from .storage import STO_EV_USER_PW, STO_EV_XPUB_PW, get_derivation_used_for_hw_device_encryption
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from .i18n import _
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from .util import UserCancelled, InvalidPassword
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# hardware device setup purpose
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HWD_SETUP_NEW_WALLET, HWD_SETUP_DECRYPT_WALLET = range(0, 2)
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class ScriptTypeNotSupported(Exception): pass
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class GoBack(Exception): pass
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class BaseWizard(object):
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def __init__(self, config, plugins, storage):
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super(BaseWizard, self).__init__()
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self.config = config
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self.plugins = plugins
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self.storage = storage
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self.wallet = None
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self.stack = []
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self.plugin = None
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self.keystores = []
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self.is_kivy = config.get('gui') == 'kivy'
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self.seed_type = None
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def set_icon(self, icon):
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pass
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def run(self, *args):
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action = args[0]
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args = args[1:]
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self.stack.append((action, args))
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if not action:
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return
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if type(action) is tuple:
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self.plugin, action = action
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if self.plugin and hasattr(self.plugin, action):
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f = getattr(self.plugin, action)
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f(self, *args)
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elif hasattr(self, action):
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f = getattr(self, action)
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f(*args)
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else:
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raise Exception("unknown action", action)
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def can_go_back(self):
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return len(self.stack)>1
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def go_back(self):
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if not self.can_go_back():
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return
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self.stack.pop()
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action, args = self.stack.pop()
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self.run(action, *args)
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def new(self):
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name = os.path.basename(self.storage.path)
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title = _("Create") + ' ' + name
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message = '\n'.join([
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_("What kind of wallet do you want to create?")
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])
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wallet_kinds = [
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('standard', _("Standard wallet")),
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('2fa', _("Wallet with two-factor authentication")),
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('multisig', _("Multi-signature wallet")),
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('imported', _("Import Bitcoin addresses or private keys")),
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]
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choices = [pair for pair in wallet_kinds if pair[0] in wallet_types]
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self.choice_dialog(title=title, message=message, choices=choices, run_next=self.on_wallet_type)
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def upgrade_storage(self):
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def on_finished():
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self.wallet = Wallet(self.storage)
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self.terminate()
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self.waiting_dialog(partial(self.storage.upgrade), _('Upgrading wallet format...'), on_finished=on_finished)
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def load_2fa(self):
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self.storage.put('wallet_type', '2fa')
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self.storage.put('use_trustedcoin', True)
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self.plugin = self.plugins.load_plugin('trustedcoin')
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def on_wallet_type(self, choice):
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self.wallet_type = choice
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if choice == 'standard':
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action = 'choose_keystore'
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elif choice == 'multisig':
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action = 'choose_multisig'
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elif choice == '2fa':
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self.load_2fa()
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action = self.storage.get_action()
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elif choice == 'imported':
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action = 'import_addresses_or_keys'
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self.run(action)
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def choose_multisig(self):
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def on_multisig(m, n):
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self.multisig_type = "%dof%d"%(m, n)
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self.storage.put('wallet_type', self.multisig_type)
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self.n = n
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self.run('choose_keystore')
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self.multisig_dialog(run_next=on_multisig)
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def choose_keystore(self):
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assert self.wallet_type in ['standard', 'multisig']
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i = len(self.keystores)
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title = _('Add cosigner') + ' (%d of %d)'%(i+1, self.n) if self.wallet_type=='multisig' else _('Keystore')
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if self.wallet_type =='standard' or i==0:
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message = _('Do you want to create a new seed, or to restore a wallet using an existing seed?')
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choices = [
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('choose_seed_type', _('Create a new seed')),
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('restore_from_seed', _('I already have a seed')),
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('restore_from_key', _('Use a master key')),
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]
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if not self.is_kivy:
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choices.append(('choose_hw_device', _('Use a hardware device')))
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else:
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message = _('Add a cosigner to your multi-sig wallet')
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choices = [
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('restore_from_key', _('Enter cosigner key')),
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('restore_from_seed', _('Enter cosigner seed')),
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]
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if not self.is_kivy:
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choices.append(('choose_hw_device', _('Cosign with hardware device')))
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self.choice_dialog(title=title, message=message, choices=choices, run_next=self.run)
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def import_addresses_or_keys(self):
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v = lambda x: keystore.is_address_list(x) or keystore.is_private_key_list(x)
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title = _("Import Bitcoin Addresses")
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message = _("Enter a list of Bitcoin addresses (this will create a watching-only wallet), or a list of private keys.")
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self.add_xpub_dialog(title=title, message=message, run_next=self.on_import,
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is_valid=v, allow_multi=True, show_wif_help=True)
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def on_import(self, text):
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# create a temporary wallet and exploit that modifications
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# will be reflected on self.storage
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if keystore.is_address_list(text):
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w = Imported_Wallet(self.storage)
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for x in text.split():
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w.import_address(x)
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elif keystore.is_private_key_list(text):
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k = keystore.Imported_KeyStore({})
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self.storage.put('keystore', k.dump())
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w = Imported_Wallet(self.storage)
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for x in keystore.get_private_keys(text):
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w.import_private_key(x, None)
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self.keystores.append(w.keystore)
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else:
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return self.terminate()
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return self.run('create_wallet')
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def restore_from_key(self):
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if self.wallet_type == 'standard':
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v = keystore.is_master_key
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title = _("Create keystore from a master key")
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message = ' '.join([
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_("To create a watching-only wallet, please enter your master public key (xpub/ypub/zpub)."),
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_("To create a spending wallet, please enter a master private key (xprv/yprv/zprv).")
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])
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self.add_xpub_dialog(title=title, message=message, run_next=self.on_restore_from_key, is_valid=v)
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else:
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i = len(self.keystores) + 1
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self.add_cosigner_dialog(index=i, run_next=self.on_restore_from_key, is_valid=keystore.is_bip32_key)
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def on_restore_from_key(self, text):
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k = keystore.from_master_key(text)
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self.on_keystore(k)
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def choose_hw_device(self, purpose=HWD_SETUP_NEW_WALLET):
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title = _('Hardware Keystore')
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# check available plugins
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support = self.plugins.get_hardware_support()
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if not support:
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msg = '\n'.join([
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_('No hardware wallet support found on your system.'),
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_('Please install the relevant libraries (eg python-trezor for Trezor).'),
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])
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self.confirm_dialog(title=title, message=msg, run_next= lambda x: self.choose_hw_device(purpose))
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return
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# scan devices
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devices = []
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devmgr = self.plugins.device_manager
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try:
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scanned_devices = devmgr.scan_devices()
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except BaseException as e:
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devmgr.print_error('error scanning devices: {}'.format(e))
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debug_msg = ' {}:\n {}'.format(_('Error scanning devices'), e)
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else:
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debug_msg = ''
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for name, description, plugin in support:
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try:
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# FIXME: side-effect: unpaired_device_info sets client.handler
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u = devmgr.unpaired_device_infos(None, plugin, devices=scanned_devices)
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except BaseException as e:
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devmgr.print_error('error getting device infos for {}: {}'.format(name, e))
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debug_msg += ' {}:\n {}\n'.format(plugin.name, e)
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continue
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devices += list(map(lambda x: (name, x), u))
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if not debug_msg:
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debug_msg = ' {}'.format(_('No exceptions encountered.'))
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if not devices:
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msg = ''.join([
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_('No hardware device detected.') + '\n',
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_('To trigger a rescan, press \'Next\'.') + '\n\n',
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_('If your device is not detected on Windows, go to "Settings", "Devices", "Connected devices", and do "Remove device". Then, plug your device again.') + ' ',
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_('On Linux, you might have to add a new permission to your udev rules.') + '\n\n',
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_('Debug message') + '\n',
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debug_msg
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])
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self.confirm_dialog(title=title, message=msg, run_next= lambda x: self.choose_hw_device(purpose))
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return
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# select device
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self.devices = devices
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choices = []
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for name, info in devices:
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state = _("initialized") if info.initialized else _("wiped")
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label = info.label or _("An unnamed {}").format(name)
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descr = "%s [%s, %s]" % (label, name, state)
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choices.append(((name, info), descr))
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msg = _('Select a device') + ':'
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self.choice_dialog(title=title, message=msg, choices=choices, run_next= lambda *args: self.on_device(*args, purpose=purpose))
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def on_device(self, name, device_info, *, purpose):
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self.plugin = self.plugins.get_plugin(name)
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try:
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self.plugin.setup_device(device_info, self, purpose)
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except OSError as e:
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self.show_error(_('We encountered an error while connecting to your device:')
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+ '\n' + str(e) + '\n'
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+ _('To try to fix this, we will now re-pair with your device.') + '\n'
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+ _('Please try again.'))
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devmgr = self.plugins.device_manager
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devmgr.unpair_id(device_info.device.id_)
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self.choose_hw_device(purpose)
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return
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except (UserCancelled, GoBack):
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self.choose_hw_device(purpose)
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return
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except BaseException as e:
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traceback.print_exc(file=sys.stderr)
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self.show_error(str(e))
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self.choose_hw_device(purpose)
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return
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if purpose == HWD_SETUP_NEW_WALLET:
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def f(derivation, script_type):
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self.run('on_hw_derivation', name, device_info, derivation, script_type)
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self.derivation_and_script_type_dialog(f)
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elif purpose == HWD_SETUP_DECRYPT_WALLET:
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derivation = get_derivation_used_for_hw_device_encryption()
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xpub = self.plugin.get_xpub(device_info.device.id_, derivation, 'standard', self)
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password = keystore.Xpub.get_pubkey_from_xpub(xpub, ())
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try:
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self.storage.decrypt(password)
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except InvalidPassword:
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# try to clear session so that user can type another passphrase
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devmgr = self.plugins.device_manager
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client = devmgr.client_by_id(device_info.device.id_)
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if hasattr(client, 'clear_session'): # FIXME not all hw wallet plugins have this
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client.clear_session()
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raise
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else:
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raise Exception('unknown purpose: %s' % purpose)
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def derivation_and_script_type_dialog(self, f):
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message1 = _('Choose the type of addresses in your wallet.')
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message2 = '\n'.join([
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_('You can override the suggested derivation path.'),
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_('If you are not sure what this is, leave this field unchanged.')
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])
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if self.wallet_type == 'multisig':
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# There is no general standard for HD multisig.
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# For legacy, this is partially compatible with BIP45; assumes index=0
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# For segwit, a custom path is used, as there is no standard at all.
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choices = [
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('standard', 'legacy multisig (p2sh)', "m/45'/0"),
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('p2wsh-p2sh', 'p2sh-segwit multisig (p2wsh-p2sh)', purpose48_derivation(0, xtype='p2wsh-p2sh')),
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('p2wsh', 'native segwit multisig (p2wsh)', purpose48_derivation(0, xtype='p2wsh')),
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]
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else:
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choices = [
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('standard', 'legacy (p2pkh)', bip44_derivation(0, bip43_purpose=44)),
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('p2wpkh-p2sh', 'p2sh-segwit (p2wpkh-p2sh)', bip44_derivation(0, bip43_purpose=49)),
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('p2wpkh', 'native segwit (p2wpkh)', bip44_derivation(0, bip43_purpose=84)),
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]
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while True:
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try:
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self.choice_and_line_dialog(
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run_next=f, title=_('Script type and Derivation path'), message1=message1,
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message2=message2, choices=choices, test_text=bitcoin.is_bip32_derivation)
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return
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except ScriptTypeNotSupported as e:
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self.show_error(e)
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# let the user choose again
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def on_hw_derivation(self, name, device_info, derivation, xtype):
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from .keystore import hardware_keystore
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try:
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xpub = self.plugin.get_xpub(device_info.device.id_, derivation, xtype, self)
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except ScriptTypeNotSupported:
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raise # this is handled in derivation_dialog
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except BaseException as e:
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self.show_error(e)
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return
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d = {
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'type': 'hardware',
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'hw_type': name,
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'derivation': derivation,
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'xpub': xpub,
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'label': device_info.label,
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}
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k = hardware_keystore(d)
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self.on_keystore(k)
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def passphrase_dialog(self, run_next):
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title = _('Seed extension')
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message = '\n'.join([
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_('You may extend your seed with custom words.'),
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_('Your seed extension must be saved together with your seed.'),
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])
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warning = '\n'.join([
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_('Note that this is NOT your encryption password.'),
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_('If you do not know what this is, leave this field empty.'),
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])
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self.line_dialog(title=title, message=message, warning=warning, default='', test=lambda x:True, run_next=run_next)
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def restore_from_seed(self):
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self.opt_bip39 = True
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self.opt_ext = True
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is_cosigning_seed = lambda x: bitcoin.seed_type(x) in ['standard', 'segwit']
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test = bitcoin.is_seed if self.wallet_type == 'standard' else is_cosigning_seed
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self.restore_seed_dialog(run_next=self.on_restore_seed, test=test)
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def on_restore_seed(self, seed, is_bip39, is_ext):
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self.seed_type = 'bip39' if is_bip39 else bitcoin.seed_type(seed)
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if self.seed_type == 'bip39':
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f = lambda passphrase: self.on_restore_bip39(seed, passphrase)
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self.passphrase_dialog(run_next=f) if is_ext else f('')
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elif self.seed_type in ['standard', 'segwit']:
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f = lambda passphrase: self.run('create_keystore', seed, passphrase)
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self.passphrase_dialog(run_next=f) if is_ext else f('')
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elif self.seed_type == 'old':
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self.run('create_keystore', seed, '')
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elif self.seed_type == '2fa':
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self.load_2fa()
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self.run('on_restore_seed', seed, is_ext)
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else:
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raise Exception('Unknown seed type', self.seed_type)
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def on_restore_bip39(self, seed, passphrase):
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def f(derivation, script_type):
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self.run('on_bip43', seed, passphrase, derivation, script_type)
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self.derivation_and_script_type_dialog(f)
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def create_keystore(self, seed, passphrase):
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k = keystore.from_seed(seed, passphrase, self.wallet_type == 'multisig')
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self.on_keystore(k)
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def on_bip43(self, seed, passphrase, derivation, script_type):
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k = keystore.from_bip39_seed(seed, passphrase, derivation, xtype=script_type)
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self.on_keystore(k)
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def on_keystore(self, k):
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has_xpub = isinstance(k, keystore.Xpub)
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if has_xpub:
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from .bitcoin import xpub_type
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t1 = xpub_type(k.xpub)
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if self.wallet_type == 'standard':
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if has_xpub and t1 not in ['standard', 'p2wpkh', 'p2wpkh-p2sh']:
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self.show_error(_('Wrong key type') + ' %s'%t1)
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self.run('choose_keystore')
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return
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self.keystores.append(k)
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self.run('create_wallet')
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elif self.wallet_type == 'multisig':
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assert has_xpub
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if t1 not in ['standard', 'p2wsh', 'p2wsh-p2sh']:
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self.show_error(_('Wrong key type') + ' %s'%t1)
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self.run('choose_keystore')
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return
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if k.xpub in map(lambda x: x.xpub, self.keystores):
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self.show_error(_('Error: duplicate master public key'))
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self.run('choose_keystore')
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return
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if len(self.keystores)>0:
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t2 = xpub_type(self.keystores[0].xpub)
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if t1 != t2:
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self.show_error(_('Cannot add this cosigner:') + '\n' + "Their key type is '%s', we are '%s'"%(t1, t2))
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self.run('choose_keystore')
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return
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self.keystores.append(k)
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if len(self.keystores) == 1:
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xpub = k.get_master_public_key()
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self.stack = []
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self.run('show_xpub_and_add_cosigners', xpub)
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elif len(self.keystores) < self.n:
|
|
self.run('choose_keystore')
|
|
else:
|
|
self.run('create_wallet')
|
|
|
|
def create_wallet(self):
|
|
encrypt_keystore = any(k.may_have_password() for k in self.keystores)
|
|
# note: the following condition ("if") is duplicated logic from
|
|
# wallet.get_available_storage_encryption_version()
|
|
if self.wallet_type == 'standard' and isinstance(self.keystores[0], keystore.Hardware_KeyStore):
|
|
# offer encrypting with a pw derived from the hw device
|
|
k = self.keystores[0]
|
|
try:
|
|
k.handler = self.plugin.create_handler(self)
|
|
password = k.get_password_for_storage_encryption()
|
|
except UserCancelled:
|
|
devmgr = self.plugins.device_manager
|
|
devmgr.unpair_xpub(k.xpub)
|
|
self.choose_hw_device()
|
|
return
|
|
except BaseException as e:
|
|
traceback.print_exc(file=sys.stderr)
|
|
self.show_error(str(e))
|
|
return
|
|
self.request_storage_encryption(
|
|
run_next=lambda encrypt_storage: self.on_password(
|
|
password,
|
|
encrypt_storage=encrypt_storage,
|
|
storage_enc_version=STO_EV_XPUB_PW,
|
|
encrypt_keystore=False))
|
|
else:
|
|
# prompt the user to set an arbitrary password
|
|
self.request_password(
|
|
run_next=lambda password, encrypt_storage: self.on_password(
|
|
password,
|
|
encrypt_storage=encrypt_storage,
|
|
storage_enc_version=STO_EV_USER_PW,
|
|
encrypt_keystore=encrypt_keystore),
|
|
force_disable_encrypt_cb=not encrypt_keystore)
|
|
|
|
def on_password(self, password, *, encrypt_storage,
|
|
storage_enc_version=STO_EV_USER_PW, encrypt_keystore):
|
|
self.storage.set_keystore_encryption(bool(password) and encrypt_keystore)
|
|
if encrypt_storage:
|
|
self.storage.set_password(password, enc_version=storage_enc_version)
|
|
for k in self.keystores:
|
|
if k.may_have_password():
|
|
k.update_password(None, password)
|
|
if self.wallet_type == 'standard':
|
|
self.storage.put('seed_type', self.seed_type)
|
|
keys = self.keystores[0].dump()
|
|
self.storage.put('keystore', keys)
|
|
self.wallet = Standard_Wallet(self.storage)
|
|
self.run('create_addresses')
|
|
elif self.wallet_type == 'multisig':
|
|
for i, k in enumerate(self.keystores):
|
|
self.storage.put('x%d/'%(i+1), k.dump())
|
|
self.storage.write()
|
|
self.wallet = Multisig_Wallet(self.storage)
|
|
self.run('create_addresses')
|
|
elif self.wallet_type == 'imported':
|
|
if len(self.keystores) > 0:
|
|
keys = self.keystores[0].dump()
|
|
self.storage.put('keystore', keys)
|
|
self.wallet = Imported_Wallet(self.storage)
|
|
self.wallet.storage.write()
|
|
self.terminate()
|
|
|
|
def show_xpub_and_add_cosigners(self, xpub):
|
|
self.show_xpub_dialog(xpub=xpub, run_next=lambda x: self.run('choose_keystore'))
|
|
|
|
def choose_seed_type(self):
|
|
title = _('Choose Seed type')
|
|
message = ' '.join([
|
|
_("The type of addresses used by your wallet will depend on your seed."),
|
|
_("Segwit wallets use bech32 addresses, defined in BIP173."),
|
|
_("Please note that websites and other wallets may not support these addresses yet."),
|
|
_("Thus, you might want to keep using a non-segwit wallet in order to be able to receive bitcoins during the transition period.")
|
|
])
|
|
choices = [
|
|
('create_standard_seed', _('Standard')),
|
|
('create_segwit_seed', _('Segwit')),
|
|
]
|
|
self.choice_dialog(title=title, message=message, choices=choices, run_next=self.run)
|
|
|
|
def create_segwit_seed(self): self.create_seed('segwit')
|
|
def create_standard_seed(self): self.create_seed('standard')
|
|
|
|
def create_seed(self, seed_type):
|
|
from . import mnemonic
|
|
self.seed_type = seed_type
|
|
seed = mnemonic.Mnemonic('en').make_seed(self.seed_type)
|
|
self.opt_bip39 = False
|
|
f = lambda x: self.request_passphrase(seed, x)
|
|
self.show_seed_dialog(run_next=f, seed_text=seed)
|
|
|
|
def request_passphrase(self, seed, opt_passphrase):
|
|
if opt_passphrase:
|
|
f = lambda x: self.confirm_seed(seed, x)
|
|
self.passphrase_dialog(run_next=f)
|
|
else:
|
|
self.run('confirm_seed', seed, '')
|
|
|
|
def confirm_seed(self, seed, passphrase):
|
|
f = lambda x: self.confirm_passphrase(seed, passphrase)
|
|
self.confirm_seed_dialog(run_next=f, test=lambda x: x==seed)
|
|
|
|
def confirm_passphrase(self, seed, passphrase):
|
|
f = lambda x: self.run('create_keystore', seed, x)
|
|
if passphrase:
|
|
title = _('Confirm Seed Extension')
|
|
message = '\n'.join([
|
|
_('Your seed extension must be saved together with your seed.'),
|
|
_('Please type it here.'),
|
|
])
|
|
self.line_dialog(run_next=f, title=title, message=message, default='', test=lambda x: x==passphrase)
|
|
else:
|
|
f('')
|
|
|
|
def create_addresses(self):
|
|
def task():
|
|
self.wallet.synchronize()
|
|
self.wallet.storage.write()
|
|
self.terminate()
|
|
msg = _("Electrum is generating your addresses, please wait...")
|
|
self.waiting_dialog(task, msg)
|
|
|