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import threading
import socket
import base64
import sys
from typing import TYPE_CHECKING
from PyQt6.QtCore import pyqtSignal, pyqtProperty, pyqtSlot
from electrum.i18n import _
from electrum.bip32 import BIP32Node
from electrum import bitcoin
from .trustedcoin import (server, ErrorConnectingServer, MOBILE_DISCLAIMER, TrustedCoinException)
from electrum.gui.common_qt.plugins import PluginQObject
if TYPE_CHECKING:
from electrum.wizard import NewWalletWizard
class TrustedcoinPluginQObject(PluginQObject):
canSignWithoutServerChanged = pyqtSignal()
termsAndConditionsRetrieved = pyqtSignal([str], arguments=['message'])
termsAndConditionsError = pyqtSignal([str], arguments=['message'])
otpError = pyqtSignal([str], arguments=['message'])
otpSuccess = pyqtSignal()
disclaimerChanged = pyqtSignal()
keystoreChanged = pyqtSignal()
otpSecretChanged = pyqtSignal()
shortIdChanged = pyqtSignal()
billingModelChanged = pyqtSignal()
remoteKeyStateChanged = pyqtSignal()
remoteKeyError = pyqtSignal([str], arguments=['message'])
requestOtp = pyqtSignal()
def __init__(self, plugin, wizard: 'NewWalletWizard', parent):
super().__init__(plugin, parent)
self.wizard = wizard
self._canSignWithoutServer = False
self._otpSecret = ''
self._shortId = ''
self._billingModel = []
self._remoteKeyState = ''
self._verifyingOtp = False
@pyqtProperty(str, notify=disclaimerChanged)
def disclaimer(self):
return '\n\n'.join(MOBILE_DISCLAIMER)
@pyqtProperty(bool, notify=canSignWithoutServerChanged)
def canSignWithoutServer(self):
return self._canSignWithoutServer
@pyqtProperty('QVariantMap', notify=keystoreChanged)
def keystore(self):
return self._keystore
@pyqtProperty(str, notify=otpSecretChanged)
def otpSecret(self):
return self._otpSecret
@pyqtProperty(str, notify=shortIdChanged)
def shortId(self):
return self._shortId
@pyqtSlot(str)
def otpSubmit(self, otp):
self._plugin.on_otp(otp)
@pyqtProperty(str, notify=remoteKeyStateChanged)
def remoteKeyState(self):
return self._remoteKeyState
@remoteKeyState.setter
def remoteKeyState(self, new_state):
if self._remoteKeyState != new_state:
self._remoteKeyState = new_state
self.remoteKeyStateChanged.emit()
@pyqtProperty('QVariantList', notify=billingModelChanged)
def billingModel(self):
return self._billingModel
def updateBillingInfo(self, wallet):
billingModel = []
price_per_tx = wallet.price_per_tx
for k, v in sorted(price_per_tx.items()):
if k == 1:
continue
item = {
'text': 'Pay every %d transactions' % k,
'value': k,
'sats_per_tx': v / k
}
billingModel.append(item)
self._billingModel = billingModel
self.billingModelChanged.emit()
@pyqtSlot()
def fetchTermsAndConditions(self):
def fetch_task():
try:
self.plugin.logger.debug('TOS')
tos = server.get_terms_of_service()
except ErrorConnectingServer as e:
self.termsAndConditionsError.emit(_('Error connecting to server'))
except Exception as e:
self.termsAndConditionsError.emit('%s: %s' % (_('Error'), repr(e)))
else:
self.termsAndConditionsRetrieved.emit(tos)
finally:
self._busy = False
self.busyChanged.emit()
self._busy = True
self.busyChanged.emit()
t = threading.Thread(target=fetch_task)
t.daemon = True
t.start()
@pyqtSlot()
def createKeystore(self):
email = 'dummy@electrum.org'
self.remoteKeyState = ''
self._otpSecret = ''
self.otpSecretChanged.emit()
wizard_data = self.wizard.get_wizard_data()
xprv1, xpub1, xprv2, xpub2, xpub3, short_id = self.plugin.create_keys(wizard_data)
def create_remote_key_task():
try:
self.plugin.logger.debug('create remote key')
r = server.create(xpub1, xpub2, email)
otp_secret = r['otp_secret']
_xpub3 = r['xpubkey_cosigner']
_id = r['id']
except (socket.error, ErrorConnectingServer) as e:
self.remoteKeyState = 'error'
self.remoteKeyError.emit(f'Network error: {str(e)}')
except TrustedCoinException as e:
if e.status_code == 409:
self.remoteKeyState = 'wallet_known'
self._shortId = short_id
self.shortIdChanged.emit()
else:
self.remoteKeyState = 'error'
self.logger.warning(str(e))
self.remoteKeyError.emit(f'Service error: {str(e)}')
except (KeyError, TypeError) as e: # catch any assumptions
self.remoteKeyState = 'error'
self.remoteKeyError.emit(f'Error: {str(e)}')
self.logger.error(str(e))
else:
if short_id != _id:
self.remoteKeyState = 'error'
self.logger.error("unexpected trustedcoin short_id: expected {}, received {}".format(short_id, _id))
self.remoteKeyError.emit('Unexpected short_id')
return
if xpub3 != _xpub3:
self.remoteKeyState = 'error'
self.logger.error("unexpected trustedcoin xpub3: expected {}, received {}".format(xpub3, _xpub3))
self.remoteKeyError.emit('Unexpected trustedcoin xpub3')
return
self.remoteKeyState = 'new'
self._otpSecret = otp_secret
self.otpSecretChanged.emit()
self._shortId = short_id
self.shortIdChanged.emit()
finally:
self._busy = False
self.busyChanged.emit()
self._busy = True
self.busyChanged.emit()
t = threading.Thread(target=create_remote_key_task)
t.daemon = True
t.start()
@pyqtSlot()
def resetOtpSecret(self):
self.remoteKeyState = ''
wizard_data = self.wizard.get_wizard_data()
xprv1, xpub1, xprv2, xpub2, xpub3, short_id = self.plugin.create_keys(wizard_data)
def reset_otp_task():
try:
self.plugin.logger.debug('reset_otp')
r = server.get_challenge(short_id)
challenge = r.get('challenge')
message = 'TRUSTEDCOIN CHALLENGE: ' + challenge
def f(xprv):
rootnode = BIP32Node.from_xkey(xprv)
key = rootnode.subkey_at_private_derivation((0, 0)).eckey
sig = bitcoin.ecdsa_sign_usermessage(key, message, is_compressed=True)
return base64.b64encode(sig).decode()
signatures = [f(x) for x in [xprv1, xprv2]]
r = server.reset_auth(short_id, challenge, signatures)
otp_secret = r.get('otp_secret')
except (socket.error, ErrorConnectingServer) as e:
self.remoteKeyState = 'error'
self.remoteKeyError.emit(f'Network error: {str(e)}')
except Exception as e:
self.remoteKeyState = 'error'
self.remoteKeyError.emit(f'Error: {str(e)}')
else:
self.remoteKeyState = 'reset'
self._otpSecret = otp_secret
self.otpSecretChanged.emit()
finally:
self._busy = False
self.busyChanged.emit()
self._busy = True
self.busyChanged.emit()
t = threading.Thread(target=reset_otp_task, daemon=True)
t.start()
@pyqtSlot(str, int)
def checkOtp(self, short_id, otp):
assert type(otp) is int # make sure this doesn't fail subtly
def check_otp_task():
try:
self.plugin.logger.debug(f'check OTP, shortId={short_id}, otp={otp}')
server.auth(short_id, otp)
except TrustedCoinException as e:
if e.status_code == 400: # invalid OTP
self.plugin.logger.debug('Invalid one-time password.')
self.otpError.emit(_('Invalid one-time password.'))
else:
self.plugin.logger.error(str(e))
self.otpError.emit(f'Service error: {str(e)}')
except Exception as e:
self.plugin.logger.error(str(e))
self.otpError.emit(f'Error: {str(e)}')
else:
self.plugin.logger.debug('OTP verify success')
self.otpSuccess.emit()
finally:
self._busy = False
self.busyChanged.emit()
self._verifyingOtp = False
self._verifyingOtp = True
self._busy = True
self.busyChanged.emit()
t = threading.Thread(target=check_otp_task, daemon=True)
t.start()