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from PyQt4.Qt import QMessageBox, QDialog, QVBoxLayout, QLabel, QThread, SIGNAL, QGridLayout, QInputDialog, QPushButton
import PyQt4.QtCore as QtCore
from binascii import unhexlify
from struct import pack
from sys import stderr
from time import sleep
from base64 import b64encode, b64decode
import unicodedata
import threading
import electrum
from electrum.account import BIP32_Account
from electrum.bitcoin import EncodeBase58Check, public_key_to_bc_address, bc_address_to_hash_160
from electrum.i18n import _
from electrum.plugins import BasePlugin, hook, always_hook, run_hook
from electrum.transaction import deserialize
from electrum.wallet import BIP32_HD_Wallet
from electrum.util import print_error, print_msg
from electrum.wallet import pw_decode, bip32_private_derivation, bip32_root
from electrum_gui.qt.util import *
try:
from trezorlib.client import types
from trezorlib.client import proto, BaseClient, ProtocolMixin
from trezorlib.qt.pinmatrix import PinMatrixWidget
from trezorlib.transport import ConnectionError
from trezorlib.transport_hid import HidTransport
TREZOR = True
except ImportError:
TREZOR = False
def log(msg):
stderr.write("%s\n" % msg)
stderr.flush()
def give_error(message):
print_error(message)
raise Exception(message)
class Plugin(BasePlugin):
def __init__(self, config, name):
BasePlugin.__init__(self, config, name)
self._is_available = self._init()
self._requires_settings = True
self.wallet = None
self.handler = None
def constructor(self, s):
return TrezorWallet(s)
def _init(self):
return TREZOR
def is_available(self):
if not self._is_available:
return False
if not self.wallet:
return False
if self.wallet.storage.get('wallet_type') != 'trezor':
return False
return True
def requires_settings(self):
return self._requires_settings
def set_enabled(self, enabled):
self.wallet.storage.put('use_' + self.name, enabled)
def is_enabled(self):
if not self.is_available():
return False
if self.wallet.has_seed():
return False
return True
def trezor_is_connected(self):
try:
self.wallet.get_client().ping('t')
except:
return False
return True
@hook
def close_wallet(self):
print_error("trezor: clear session")
if self.wallet and self.wallet.client:
self.wallet.client.clear_session()
self.wallet.client.transport.close()
self.wallet = None
@hook
def cmdline_load_wallet(self, wallet):
self.wallet = wallet
self.wallet.plugin = self
if self.handler is None:
self.handler = TrezorCmdLineHandler()
@hook
def load_wallet(self, wallet, window):
self.print_error("load_wallet")
self.wallet = wallet
self.window = window
self.wallet.plugin = self
if self.handler is None:
self.handler = TrezorQtHandler(self.window.app)
if self.trezor_is_connected():
if self.wallet.addresses() and not self.wallet.check_proper_device():
QMessageBox.information(self.window, _('Error'), _("This wallet does not match your Trezor device"), _('OK'))
self.wallet.force_watching_only = True
else:
QMessageBox.information(self.window, _('Error'), _("Trezor device not detected.\nContinuing in watching-only mode."), _('OK'))
self.wallet.force_watching_only = True
@hook
def installwizard_load_wallet(self, wallet, window):
self.load_wallet(wallet, window)
@hook
def installwizard_restore(self, wizard, storage):
if storage.get('wallet_type') != 'trezor':
return
seed = wizard.enter_seed_dialog("Enter your Trezor seed", None, func=lambda x:True)
if not seed:
return
wallet = TrezorWallet(storage)
self.wallet = wallet
passphrase = self.handler.get_passphrase(_("Please enter your Trezor passphrase.") + '\n' + _("Press OK if you do not use one."))
if passphrase is None:
return
password = wizard.password_dialog()
wallet.add_seed(seed, password)
wallet.add_cosigner_seed(seed, 'x/', password, passphrase)
wallet.create_main_account(password)
# disable trezor plugin
self.set_enabled(False)
return wallet
@hook
def receive_menu(self, menu, addrs):
if not self.wallet.is_watching_only() and self.wallet.atleast_version(1, 3) and len(addrs) == 1:
menu.addAction(_("Show on TREZOR"), lambda: self.wallet.show_address(addrs[0]))
def settings_widget(self, window):
return EnterButton(_('Settings'), self.settings_dialog)
def settings_dialog(self):
get_label = lambda: self.wallet.get_client().features.label
update_label = lambda: current_label_label.setText("Label: %s" % get_label())
d = QDialog()
layout = QGridLayout(d)
layout.addWidget(QLabel("Trezor Options"),0,0)
layout.addWidget(QLabel("ID:"),1,0)
layout.addWidget(QLabel(" %s" % self.wallet.get_client().get_device_id()),1,1)
def modify_label():
response = QInputDialog().getText(None, "Set New Trezor Label", "New Trezor Label: (upon submission confirm on Trezor)")
if not response[1]:
return
new_label = str(response[0])
self.handler.show_message("Please confirm label change on Trezor")
status = self.wallet.get_client().apply_settings(label=new_label)
self.handler.stop()
update_label()
current_label_label = QLabel()
update_label()
change_label_button = QPushButton("Modify")
change_label_button.clicked.connect(modify_label)
layout.addWidget(current_label_label,3,0)
layout.addWidget(change_label_button,3,1)
if d.exec_():
return True
else:
return False
class TrezorWallet(BIP32_HD_Wallet):
wallet_type = 'trezor'
root_derivation = "m/44'/0'"
def __init__(self, storage):
BIP32_HD_Wallet.__init__(self, storage)
self.transport = None
self.client = None
self.mpk = None
self.device_checked = False
self.force_watching_only = False
def get_action(self):
if not self.accounts:
return 'create_accounts'
def can_import(self):
return False
def can_sign_xpubkey(self, x_pubkey):
xpub, sequence = BIP32_Account.parse_xpubkey(x_pubkey)
return xpub in self.master_public_keys.values()
def can_export(self):
return False
def can_create_accounts(self):
return True
def can_change_password(self):
return False
def is_watching_only(self):
return self.force_watching_only
def get_client(self):
if not TREZOR:
give_error('please install github.com/trezor/python-trezor')
if not self.client or self.client.bad:
try:
d = HidTransport.enumerate()[0]
self.transport = HidTransport(d)
except:
give_error('Could not connect to your Trezor. Please verify the cable is connected and that no other app is using it.')
self.client = QtGuiTrezorClient(self.transport)
self.client.handler = self.plugin.handler
self.client.set_tx_api(self)
#self.client.clear_session()# TODO Doesn't work with firmware 1.1, returns proto.Failure
self.client.bad = False
self.device_checked = False
self.proper_device = False
if not self.atleast_version(1, 2, 1):
give_error('Outdated Trezor firmware. Please update the firmware from https://www.mytrezor.com')
return self.client
def compare_version(self, major, minor=0, patch=0):
features = self.get_client().features
return cmp([features.major_version, features.minor_version, features.patch_version], [major, minor, patch])
def atleast_version(self, major, minor=0, patch=0):
return self.compare_version(major, minor, patch) >= 0
def address_id(self, address):
account_id, (change, address_index) = self.get_address_index(address)
return "44'/0'/%s'/%d/%d" % (account_id, change, address_index)
def create_main_account(self, password):
self.create_account('Main account', None) #name, empty password
def mnemonic_to_seed(self, mnemonic, passphrase):
# trezor uses bip39
import pbkdf2, hashlib, hmac
PBKDF2_ROUNDS = 2048
mnemonic = unicodedata.normalize('NFKD', ' '.join(mnemonic.split()))
passphrase = unicodedata.normalize('NFKD', passphrase)
return pbkdf2.PBKDF2(mnemonic, 'mnemonic' + passphrase, iterations = PBKDF2_ROUNDS, macmodule = hmac, digestmodule = hashlib.sha512).read(64)
def derive_xkeys(self, root, derivation, password):
x = self.master_private_keys.get(root)
if x:
root_xprv = pw_decode(x, password)
xprv, xpub = bip32_private_derivation(root_xprv, root, derivation)
return xpub, xprv
else:
derivation = derivation.replace(self.root_name,"44'/0'/")
xpub = self.get_public_key(derivation)
return xpub, None
def get_public_key(self, bip32_path):
address_n = self.get_client().expand_path(bip32_path)
node = self.get_client().get_public_node(address_n).node
xpub = "0488B21E".decode('hex') + chr(node.depth) + self.i4b(node.fingerprint) + self.i4b(node.child_num) + node.chain_code + node.public_key
return EncodeBase58Check(xpub)
def get_master_public_key(self):
if not self.mpk:
self.mpk = self.get_public_key("44'/0'")
return self.mpk
def i4b(self, x):
return pack('>I', x)
def add_keypairs(self, tx, keypairs, password):
#do nothing - no priv keys available
pass
def decrypt_message(self, pubkey, message, password):
raise BaseException( _('Decrypt method is not implemented in Trezor') )
#address = public_key_to_bc_address(pubkey.decode('hex'))
#address_path = self.address_id(address)
#address_n = self.get_client().expand_path(address_path)
#try:
# decrypted_msg = self.get_client().decrypt_message(address_n, b64decode(message))
#except Exception, e:
# give_error(e)
#finally:
# twd.stop()
#return str(decrypted_msg)
def show_address(self, address):
if not self.check_proper_device():
give_error('Wrong device or password')
try:
address_path = self.address_id(address)
address_n = self.get_client().expand_path(address_path)
except Exception, e:
give_error(e)
try:
self.get_client().get_address('Bitcoin', address_n, True)
except Exception, e:
give_error(e)
finally:
self.plugin.handler.stop()
def sign_message(self, address, message, password):
if not self.check_proper_device():
give_error('Wrong device or password')
try:
address_path = self.address_id(address)
address_n = self.get_client().expand_path(address_path)
except Exception, e:
give_error(e)
try:
msg_sig = self.get_client().sign_message('Bitcoin', address_n, message)
except Exception, e:
give_error(e)
finally:
self.plugin.handler.stop()
b64_msg_sig = b64encode(msg_sig.signature)
return str(b64_msg_sig)
def sign_transaction(self, tx, password):
if tx.is_complete():
return
if not self.check_proper_device():
give_error('Wrong device or password')
client = self.get_client()
inputs = self.tx_inputs(tx)
outputs = self.tx_outputs(tx)
try:
signed_tx = self.get_client().sign_tx('Bitcoin', inputs, outputs)[1]
except Exception, e:
give_error(e)
finally:
self.plugin.handler.stop()
#values = [i['value'] for i in tx.inputs]
raw = signed_tx.encode('hex')
tx.update(raw)
#for i, txinput in enumerate(tx.inputs):
# txinput['value'] = values[i]
def tx_inputs(self, tx):
inputs = []
for txinput in tx.inputs:
txinputtype = types.TxInputType()
if ('is_coinbase' in txinput and txinput['is_coinbase']):
prev_hash = "\0"*32
prev_index = 0xffffffff # signed int -1
else:
address = txinput['address']
try:
address_path = self.address_id(address)
address_n = self.get_client().expand_path(address_path)
txinputtype.address_n.extend(address_n)
except: pass
prev_hash = unhexlify(txinput['prevout_hash'])
prev_index = txinput['prevout_n']
txinputtype.prev_hash = prev_hash
txinputtype.prev_index = prev_index
if 'scriptSig' in txinput:
script_sig = txinput['scriptSig'].decode('hex')
txinputtype.script_sig = script_sig
if 'sequence' in txinput:
sequence = txinput['sequence']
txinputtype.sequence = sequence
inputs.append(txinputtype)
#TODO P2SH
return inputs
def tx_outputs(self, tx):
outputs = []
for type, address, amount in tx.outputs:
assert type == 'address'
txoutputtype = types.TxOutputType()
if self.is_change(address):
address_path = self.address_id(address)
address_n = self.get_client().expand_path(address_path)
txoutputtype.address_n.extend(address_n)
else:
txoutputtype.address = address
txoutputtype.amount = amount
addrtype, hash_160 = bc_address_to_hash_160(address)
if addrtype == 0:
txoutputtype.script_type = types.PAYTOADDRESS
elif addrtype == 5:
txoutputtype.script_type = types.PAYTOSCRIPTHASH
else:
raise BaseException('addrtype')
outputs.append(txoutputtype)
return outputs
def electrum_tx_to_txtype(self, tx):
t = types.TransactionType()
d = deserialize(tx.raw)
t.version = d['version']
t.lock_time = d['lockTime']
inputs = self.tx_inputs(tx)
t.inputs.extend(inputs)
for vout in d['outputs']:
o = t.bin_outputs.add()
o.amount = vout['value']
o.script_pubkey = vout['scriptPubKey'].decode('hex')
return t
def get_tx(self, tx_hash):
tx = self.transactions[tx_hash]
tx.deserialize()
return self.electrum_tx_to_txtype(tx)
def check_proper_device(self):
self.get_client().ping('t')
if not self.device_checked:
address = self.addresses(False)[0]
address_id = self.address_id(address)
n = self.get_client().expand_path(address_id)
device_address = self.get_client().get_address('Bitcoin', n)
self.device_checked = True
if device_address != address:
self.proper_device = False
else:
self.proper_device = True
return self.proper_device
class TrezorGuiMixin(object):
def __init__(self, *args, **kwargs):
super(TrezorGuiMixin, self).__init__(*args, **kwargs)
def callback_ButtonRequest(self, msg):
if msg.code == 3:
message = "Confirm transaction outputs on Trezor device to continue"
elif msg.code == 8:
message = "Confirm transaction fee on Trezor device to continue"
elif msg.code == 7:
message = "Confirm message to sign on Trezor device to continue"
elif msg.code == 10:
message = "Confirm address on Trezor device to continue"
else:
message = "Check Trezor device to continue"
self.handler.show_message(message)
return proto.ButtonAck()
def callback_PinMatrixRequest(self, msg):
if msg.type == 1:
desc = 'current PIN'
elif msg.type == 2:
desc = 'new PIN'
elif msg.type == 3:
desc = 'new PIN again'
else:
desc = 'PIN'
pin = self.handler.get_pin("Please enter Trezor %s" % desc)
if not pin:
return proto.Cancel()
return proto.PinMatrixAck(pin=pin)
def callback_PassphraseRequest(self, req):
msg = _("Please enter your Trezor passphrase.")
passphrase = self.handler.get_passphrase(msg)
if passphrase is None:
return proto.Cancel()
return proto.PassphraseAck(passphrase=passphrase)
def callback_WordRequest(self, msg):
#TODO
log("Enter one word of mnemonic: ")
word = raw_input()
return proto.WordAck(word=word)
class TrezorCmdLineHandler:
def get_passphrase(self, msg):
import getpass
print_msg(msg)
return getpass.getpass('')
def get_pin(self, msg):
t = { 'a':'7', 'b':'8', 'c':'9', 'd':'4', 'e':'5', 'f':'6', 'g':'1', 'h':'2', 'i':'3'}
print_msg(msg)
print_msg("a b c\nd e f\ng h i\n-----")
o = raw_input()
return ''.join(map(lambda x: t[x], o))
def stop(self):
pass
def show_message(self, msg):
print_msg(msg)
class TrezorQtHandler:
def __init__(self, win):
self.win = win
self.win.connect(win, SIGNAL('trezor_done'), self.dialog_stop)
self.win.connect(win, SIGNAL('message_dialog'), self.message_dialog)
self.win.connect(win, SIGNAL('pin_dialog'), self.pin_dialog)
self.win.connect(win, SIGNAL('passphrase_dialog'), self.passphrase_dialog)
self.done = threading.Event()
def stop(self):
self.win.emit(SIGNAL('trezor_done'))
def show_message(self, msg):
self.message = msg
self.win.emit(SIGNAL('message_dialog'))
def get_pin(self, msg):
self.done.clear()
self.message = msg
self.win.emit(SIGNAL('pin_dialog'))
self.done.wait()
return self.response
def get_passphrase(self, msg):
self.done.clear()
self.message = msg
self.win.emit(SIGNAL('passphrase_dialog'))
self.done.wait()
return self.passphrase
def pin_dialog(self):
d = QDialog(None)
d.setModal(1)
d.setWindowTitle(_("Enter PIN"))
d.setWindowFlags(d.windowFlags() | QtCore.Qt.WindowStaysOnTopHint)
matrix = PinMatrixWidget()
vbox = QVBoxLayout()
vbox.addWidget(QLabel(self.message))
vbox.addWidget(matrix)
vbox.addLayout(Buttons(CancelButton(d), OkButton(d)))
d.setLayout(vbox)
if not d.exec_():
self.response = None
self.response = str(matrix.get_value())
self.done.set()
def passphrase_dialog(self):
from electrum_gui.qt.password_dialog import make_password_dialog, run_password_dialog
d = QDialog()
d.setModal(1)
d.setLayout(make_password_dialog(d, None, self.message, False))
confirmed, p, passphrase = run_password_dialog(d, None, None)
if not confirmed:
QMessageBox.critical(None, _('Error'), _("Password request canceled"), _('OK'))
self.passphrase = None
else:
if passphrase is None:
passphrase = '' # Even blank string is valid Trezor passphrase
self.passphrase = unicodedata.normalize('NFKD', unicode(passphrase))
self.done.set()
def message_dialog(self):
self.d = QDialog()
self.d.setModal(1)
self.d.setWindowTitle('Please Check Trezor Device')
self.d.setWindowFlags(self.d.windowFlags() | QtCore.Qt.WindowStaysOnTopHint)
l = QLabel(self.message)
vbox = QVBoxLayout(self.d)
vbox.addWidget(l)
self.d.show()
def dialog_stop(self):
self.d.hide()
if TREZOR:
class QtGuiTrezorClient(ProtocolMixin, TrezorGuiMixin, BaseClient):
def call_raw(self, msg):
try:
resp = BaseClient.call_raw(self, msg)
except ConnectionError:
self.bad = True
raise
return resp