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421 lines
16 KiB
421 lines
16 KiB
import threading |
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import socket |
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import base64 |
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from typing import TYPE_CHECKING |
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from PyQt5.QtCore import QObject, pyqtSignal, pyqtProperty, pyqtSlot |
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from electrum.i18n import _ |
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from electrum.plugin import hook |
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from electrum.bip32 import xpub_type, BIP32Node |
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from electrum.util import UserFacingException |
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from electrum import keystore |
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from electrum.gui.qml.qewallet import QEWallet |
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from electrum.gui.qml.plugins import PluginQObject |
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from .trustedcoin import (TrustedCoinPlugin, server, ErrorConnectingServer, |
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MOBILE_DISCLAIMER, get_user_id, get_signing_xpub, |
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TrustedCoinException, make_xpub) |
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if TYPE_CHECKING: |
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from electrum.gui.qml import ElectrumQmlApplication |
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from electrum.wallet import Abstract_Wallet |
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class Plugin(TrustedCoinPlugin): |
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class QSignalObject(PluginQObject): |
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canSignWithoutServerChanged = pyqtSignal() |
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_canSignWithoutServer = False |
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termsAndConditionsRetrieved = pyqtSignal([str], arguments=['message']) |
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termsAndConditionsError = pyqtSignal([str], arguments=['message']) |
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otpError = pyqtSignal([str], arguments=['message']) |
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otpSuccess = pyqtSignal() |
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disclaimerChanged = pyqtSignal() |
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keystoreChanged = pyqtSignal() |
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otpSecretChanged = pyqtSignal() |
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_otpSecret = '' |
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shortIdChanged = pyqtSignal() |
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_shortId = '' |
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billingModelChanged = pyqtSignal() |
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_billingModel = [] |
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_remoteKeyState = '' |
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remoteKeyStateChanged = pyqtSignal() |
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remoteKeyError = pyqtSignal([str], arguments=['message']) |
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requestOtp = pyqtSignal() |
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def __init__(self, plugin, parent): |
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super().__init__(plugin, parent) |
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@pyqtProperty(str, notify=disclaimerChanged) |
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def disclaimer(self): |
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return '\n\n'.join(MOBILE_DISCLAIMER) |
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@pyqtProperty(bool, notify=canSignWithoutServerChanged) |
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def canSignWithoutServer(self): |
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return self._canSignWithoutServer |
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@pyqtProperty('QVariantMap', notify=keystoreChanged) |
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def keystore(self): |
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return self._keystore |
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@pyqtProperty(str, notify=otpSecretChanged) |
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def otpSecret(self): |
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return self._otpSecret |
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@pyqtProperty(str, notify=shortIdChanged) |
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def shortId(self): |
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return self._shortId |
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@pyqtSlot(str) |
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def otpSubmit(self, otp): |
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self._plugin.on_otp(otp) |
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@pyqtProperty(str, notify=remoteKeyStateChanged) |
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def remoteKeyState(self): |
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return self._remoteKeyState |
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@remoteKeyState.setter |
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def remoteKeyState(self, new_state): |
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if self._remoteKeyState != new_state: |
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self._remoteKeyState = new_state |
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self.remoteKeyStateChanged.emit() |
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@pyqtProperty('QVariantList', notify=billingModelChanged) |
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def billingModel(self): |
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return self._billingModel |
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def updateBillingInfo(self, wallet): |
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billingModel = [] |
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price_per_tx = wallet.price_per_tx |
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for k, v in sorted(price_per_tx.items()): |
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if k == 1: |
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continue |
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item = { |
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'text': 'Pay every %d transactions' % k, |
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'value': k, |
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'sats_per_tx': v/k |
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} |
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billingModel.append(item) |
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self._billingModel = billingModel |
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self.billingModelChanged.emit() |
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@pyqtSlot() |
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def fetchTermsAndConditions(self): |
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def fetch_task(): |
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try: |
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self.plugin.logger.debug('TOS') |
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tos = server.get_terms_of_service() |
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except ErrorConnectingServer as e: |
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self.termsAndConditionsError.emit(_('Error connecting to server')) |
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except Exception as e: |
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self.termsAndConditionsError.emit('%s: %s' % (_('Error'), repr(e))) |
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else: |
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self.termsAndConditionsRetrieved.emit(tos) |
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finally: |
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self._busy = False |
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self.busyChanged.emit() |
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self._busy = True |
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self.busyChanged.emit() |
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t = threading.Thread(target=fetch_task) |
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t.daemon = True |
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t.start() |
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@pyqtSlot(str) |
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def createKeystore(self, email): |
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self.remoteKeyState = '' |
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self._otpSecret = '' |
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self.otpSecretChanged.emit() |
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xprv1, xpub1, xprv2, xpub2, xpub3, short_id = self.plugin.create_keys() |
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def create_remote_key_task(): |
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try: |
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self.plugin.logger.debug('create remote key') |
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r = server.create(xpub1, xpub2, email) |
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otp_secret = r['otp_secret'] |
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_xpub3 = r['xpubkey_cosigner'] |
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_id = r['id'] |
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except (socket.error, ErrorConnectingServer) as e: |
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self.remoteKeyState = 'error' |
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self.remoteKeyError.emit(f'Network error: {str(e)}') |
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except TrustedCoinException as e: |
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if e.status_code == 409: |
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self.remoteKeyState = 'wallet_known' |
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self._shortId = short_id |
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self.shortIdChanged.emit() |
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else: |
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self.remoteKeyState = 'error' |
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self.logger.warning(str(e)) |
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self.remoteKeyError.emit(f'Service error: {str(e)}') |
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except (KeyError,TypeError) as e: # catch any assumptions |
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self.remoteKeyState = 'error' |
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self.remoteKeyError.emit(f'Error: {str(e)}') |
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self.logger.error(str(e)) |
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else: |
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if short_id != _id: |
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self.remoteKeyState = 'error' |
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self.logger.error("unexpected trustedcoin short_id: expected {}, received {}".format(short_id, _id)) |
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self.remoteKeyError.emit('Unexpected short_id') |
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return |
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if xpub3 != _xpub3: |
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self.remoteKeyState = 'error' |
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self.logger.error("unexpected trustedcoin xpub3: expected {}, received {}".format(xpub3, _xpub3)) |
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self.remoteKeyError.emit('Unexpected trustedcoin xpub3') |
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return |
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self.remoteKeyState = 'new' |
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self._otpSecret = otp_secret |
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self.otpSecretChanged.emit() |
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self._shortId = short_id |
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self.shortIdChanged.emit() |
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finally: |
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self._busy = False |
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self.busyChanged.emit() |
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self._busy = True |
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self.busyChanged.emit() |
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t = threading.Thread(target=create_remote_key_task) |
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t.daemon = True |
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t.start() |
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@pyqtSlot() |
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def resetOtpSecret(self): |
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self.remoteKeyState = '' |
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xprv1, xpub1, xprv2, xpub2, xpub3, short_id = self.plugin.create_keys() |
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def reset_otp_task(): |
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try: |
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# TODO: move reset request to UI agnostic plugin section |
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self.plugin.logger.debug('reset_otp') |
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r = server.get_challenge(short_id) |
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challenge = r.get('challenge') |
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message = 'TRUSTEDCOIN CHALLENGE: ' + challenge |
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def f(xprv): |
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rootnode = BIP32Node.from_xkey(xprv) |
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key = rootnode.subkey_at_private_derivation((0, 0)).eckey |
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sig = key.sign_message(message, True) |
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return base64.b64encode(sig).decode() |
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signatures = [f(x) for x in [xprv1, xprv2]] |
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r = server.reset_auth(short_id, challenge, signatures) |
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otp_secret = r.get('otp_secret') |
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except (socket.error, ErrorConnectingServer) as e: |
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self.remoteKeyState = 'error' |
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self.remoteKeyError.emit(f'Network error: {str(e)}') |
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except Exception as e: |
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self.remoteKeyState = 'error' |
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self.remoteKeyError.emit(f'Error: {str(e)}') |
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else: |
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self.remoteKeyState = 'reset' |
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self._otpSecret = otp_secret |
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self.otpSecretChanged.emit() |
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finally: |
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self._busy = False |
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self.busyChanged.emit() |
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self._busy = True |
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self.busyChanged.emit() |
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t = threading.Thread(target=reset_otp_task, daemon=True) |
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t.start() |
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@pyqtSlot(str, int) |
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def checkOtp(self, short_id, otp): |
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def check_otp_task(): |
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try: |
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self.plugin.logger.debug(f'check OTP, shortId={short_id}, otp={otp}') |
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server.auth(short_id, otp) |
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except TrustedCoinException as e: |
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if e.status_code == 400: # invalid OTP |
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self.plugin.logger.debug('Invalid one-time password.') |
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self.otpError.emit(_('Invalid one-time password.')) |
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else: |
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self.plugin.logger.error(str(e)) |
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self.otpError.emit(f'Service error: {str(e)}') |
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except Exception as e: |
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self.plugin.logger.error(str(e)) |
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self.otpError.emit(f'Error: {str(e)}') |
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else: |
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self.plugin.logger.debug('OTP verify success') |
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self.otpSuccess.emit() |
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finally: |
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self._busy = False |
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self.busyChanged.emit() |
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self._busy = True |
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self.busyChanged.emit() |
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t = threading.Thread(target=check_otp_task, daemon=True) |
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t.start() |
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def __init__(self, *args): |
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super().__init__(*args) |
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@hook |
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def load_wallet(self, wallet: 'Abstract_Wallet'): |
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if not isinstance(wallet, self.wallet_class): |
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return |
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self.logger.debug(f'plugin enabled for wallet "{str(wallet)}"') |
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if wallet.can_sign_without_server(): |
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self.so._canSignWithoutServer = True |
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self.so.canSignWithoutServerChanged.emit() |
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msg = ' '.join([ |
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_('This wallet was restored from seed, and it contains two master private keys.'), |
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_('Therefore, two-factor authentication is disabled.') |
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]) |
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self.logger.info(msg) |
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self.start_request_thread(wallet) |
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@hook |
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def init_qml(self, app: 'ElectrumQmlApplication'): |
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self.logger.debug(f'init_qml hook called, gui={str(type(app))}') |
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self._app = app |
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# important: QSignalObject needs to be parented, as keeping a ref |
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# in the plugin is not enough to avoid gc |
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self.so = Plugin.QSignalObject(self, self._app) |
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# extend wizard |
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self.extend_wizard() |
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# wizard support functions |
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def extend_wizard(self): |
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wizard = self._app.daemon.newWalletWizard |
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self.logger.debug(repr(wizard)) |
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views = { |
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'trustedcoin_start': { |
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'gui': '../../../../plugins/trustedcoin/qml/Disclaimer', |
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'next': 'trustedcoin_choose_seed' |
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}, |
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'trustedcoin_choose_seed': { |
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'gui': '../../../../plugins/trustedcoin/qml/ChooseSeed', |
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'next': lambda d: 'trustedcoin_create_seed' if d['keystore_type'] == 'createseed' |
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else 'trustedcoin_have_seed' |
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}, |
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'trustedcoin_create_seed': { |
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'gui': 'WCCreateSeed', |
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'next': 'trustedcoin_confirm_seed' |
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}, |
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'trustedcoin_confirm_seed': { |
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'gui': 'WCConfirmSeed', |
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'next': 'trustedcoin_tos_email' |
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}, |
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'trustedcoin_have_seed': { |
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'gui': 'WCHaveSeed', |
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'next': 'trustedcoin_keep_disable' |
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}, |
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'trustedcoin_keep_disable': { |
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'gui': '../../../../plugins/trustedcoin/qml/KeepDisable', |
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'next': lambda d: 'trustedcoin_tos_email' if d['trustedcoin_keepordisable'] != 'disable' |
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else 'wallet_password', |
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'accept': self.recovery_disable, |
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'last': lambda d: wizard.is_single_password() and d['trustedcoin_keepordisable'] == 'disable' |
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}, |
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'trustedcoin_tos_email': { |
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'gui': '../../../../plugins/trustedcoin/qml/Terms', |
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'next': 'trustedcoin_show_confirm_otp' |
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}, |
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'trustedcoin_show_confirm_otp': { |
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'gui': '../../../../plugins/trustedcoin/qml/ShowConfirmOTP', |
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'accept': self.on_accept_otp_secret, |
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'next': 'wallet_password', |
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'last': lambda d: wizard.is_single_password() |
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} |
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} |
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wizard.navmap_merge(views) |
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# combined create_keystore and create_remote_key pre |
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def create_keys(self): |
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wizard = self._app.daemon.newWalletWizard |
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wizard_data = wizard._current.wizard_data |
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xprv1, xpub1, xprv2, xpub2 = self.xkeys_from_seed(wizard_data['seed'], wizard_data['seed_extra_words']) |
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# NOTE: at this point, old style wizard creates a wallet file (w. password if set) and |
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# stores the keystores and wizard state, in order to separate offline seed creation |
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# and online retrieval of the OTP secret. For mobile, we don't do this, but |
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# for desktop the wizard should support this usecase. |
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data = {'x1/': {'xpub': xpub1}, 'x2/': {'xpub': xpub2}} |
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# Generate third key deterministically. |
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long_user_id, short_id = get_user_id(data) |
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xtype = xpub_type(xpub1) |
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xpub3 = make_xpub(get_signing_xpub(xtype), long_user_id) |
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return (xprv1,xpub1,xprv2,xpub2,xpub3,short_id) |
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def on_accept_otp_secret(self, wizard_data): |
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self.logger.debug('OTP secret accepted, creating keystores') |
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xprv1,xpub1,xprv2,xpub2,xpub3,short_id = self.create_keys() |
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k1 = keystore.from_xprv(xprv1) |
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k2 = keystore.from_xpub(xpub2) |
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k3 = keystore.from_xpub(xpub3) |
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wizard_data['x1/'] = k1.dump() |
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wizard_data['x2/'] = k2.dump() |
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wizard_data['x3/'] = k3.dump() |
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def recovery_disable(self, wizard_data): |
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if wizard_data['trustedcoin_keepordisable'] != 'disable': |
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return |
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self.logger.debug('2fa disabled, creating keystores') |
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xprv1,xpub1,xprv2,xpub2,xpub3,short_id = self.create_keys() |
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k1 = keystore.from_xprv(xprv1) |
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k2 = keystore.from_xprv(xprv2) |
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k3 = keystore.from_xpub(xpub3) |
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wizard_data['x1/'] = k1.dump() |
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wizard_data['x2/'] = k2.dump() |
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wizard_data['x3/'] = k3.dump() |
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# running wallet functions |
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def prompt_user_for_otp(self, wallet, tx, on_success, on_failure): |
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self.logger.debug('prompt_user_for_otp') |
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self.on_success = on_success |
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self.on_failure = on_failure if on_failure else lambda x: self.logger.error(x) |
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self.wallet = wallet |
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self.tx = tx |
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qewallet = QEWallet.getInstanceFor(wallet) |
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qewallet.request_otp(self.on_otp) |
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def on_otp(self, otp): |
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if not otp: |
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self.on_failure(_('No auth code')) |
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return |
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self.logger.debug(f'on_otp {otp} for tx {repr(self.tx)}') |
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try: |
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self.wallet.on_otp(self.tx, otp) |
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except UserFacingException as e: |
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self.on_failure(_('Invalid one-time password.')) |
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except TrustedCoinException as e: |
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if e.status_code == 400: # invalid OTP |
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self.on_failure(_('Invalid one-time password.')) |
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else: |
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self.on_failure(_('Service Error') + ':\n' + str(e)) |
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except Exception as e: |
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self.on_failure(_('Error') + ':\n' + str(e)) |
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else: |
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self.on_success(self.tx) |
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def billing_info_retrieved(self, wallet): |
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self.logger.info('billing_info_retrieved') |
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qewallet = QEWallet.getInstanceFor(wallet) |
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qewallet.billingInfoChanged.emit() |
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self.so.updateBillingInfo(wallet) |
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