432 lines
14 KiB
Python
432 lines
14 KiB
Python
from PyQt4.Qt import QMessageBox, QDialog, QVBoxLayout, QLabel, QThread, SIGNAL
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import PyQt4.QtCore as QtCore
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from binascii import unhexlify
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from struct import pack
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from sys import stderr
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from time import sleep
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from base64 import b64encode, b64decode
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from electrum_gui.qt.password_dialog import make_password_dialog, run_password_dialog
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from electrum_gui.qt.util import ok_cancel_buttons
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from electrum.account import BIP32_Account
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from electrum.bitcoin import EncodeBase58Check, public_key_to_bc_address, bc_address_to_hash_160
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from electrum.i18n import _
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from electrum.plugins import BasePlugin
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from electrum.transaction import deserialize
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from electrum.wallet import NewWallet
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try:
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from trezorlib.client import types
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from trezorlib.client import proto, BaseClient, ProtocolMixin
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from trezorlib.qt.pinmatrix import PinMatrixWidget
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from trezorlib.transport import ConnectionError
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from trezorlib.transport_hid import HidTransport
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TREZOR = True
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except ImportError:
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TREZOR = False
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def log(msg):
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stderr.write("%s\n" % msg)
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stderr.flush()
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class Plugin(BasePlugin):
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def fullname(self): return 'Trezor Wallet'
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def description(self): return 'Provides support for Trezor hardware wallet\n\nRequires github.com/trezor/python-trezor'
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def __init__(self, gui, name):
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BasePlugin.__init__(self, gui, name)
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self._is_available = self._init()
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self.wallet = None
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def _init(self):
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return TREZOR
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def is_available(self):
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return self._is_available
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def set_enabled(self, enabled):
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self.wallet.storage.put('use_' + self.name, enabled)
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def is_enabled(self):
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if not self.is_available():
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return False
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if not self.wallet or self.wallet.storage.get('wallet_type') == 'trezor':
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return True
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return self.wallet.storage.get('use_' + self.name) is True
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def enable(self):
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return BasePlugin.enable(self)
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def load_wallet(self, wallet):
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self.wallet = wallet
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def add_wallet_types(self, wallet_types):
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wallet_types.append(('trezor', _("Trezor wallet"), TrezorWallet))
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def installwizard_restore(self, wizard, storage):
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wallet = TrezorWallet(storage)
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try:
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wallet.create_accounts(None)
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except BaseException as e:
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QMessageBox.information(None, _('Error'), str(e), _('OK'))
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return
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return wallet
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def send_tx(self, tx):
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try:
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self.wallet.sign_transaction(tx, None, None)
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except Exception as e:
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tx.error = str(e)
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class TrezorWallet(NewWallet):
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def __init__(self, storage):
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self.transport = None
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self.client = None
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self.mpk = None
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NewWallet.__init__(self, storage)
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self.seed = 'trezor'
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self.storage.put('gap_limit', 20, False) #obey BIP44 gap limit of 20
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self.use_encryption = False
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self.storage.put('seed', self.seed, False)
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self.storage.put('seed_version', self.seed_version, False)
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self.storage.put('use_encryption', self.use_encryption, False)
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self.device_checked = False
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def get_action(self):
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if not self.accounts:
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return 'create_accounts'
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def can_create_accounts(self):
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return True
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def can_change_password(self):
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return False
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def has_seed(self):
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return False
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def is_watching_only(self):
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return False
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def default_account(self):
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return "44'/0'/0'"
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def get_client(self):
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if not TREZOR:
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raise Exception('please install github.com/trezor/python-trezor')
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if not self.client or self.client.bad:
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try:
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d = HidTransport.enumerate()[0]
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self.transport = HidTransport(d)
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except:
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raise Exception("Trezor not found")
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self.client = QtGuiTrezorClient(self.transport)
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self.client.set_tx_api(self)
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#self.client.clear_session()# TODO Doesn't work with firmware 1.1, returns proto.Failure
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self.client.bad = False
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self.device_checked = False
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self.proper_device = False
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return self.client
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def account_id(self, i):
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return "44'/0'/%d'"%i
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def address_id(self, address):
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account_id, (change, address_index) = self.get_address_index(address)
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return "%s/%d/%d" % (account_id, change, address_index)
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def create_accounts(self, password):
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self.create_account('Main account', '') #name, empty password
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def make_account(self, account_id, password):
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xpub = self.get_public_key(account_id)
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self.add_master_public_key(account_id, xpub)
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account = BIP32_Account({'xpub':xpub})
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return account
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def get_public_key(self, bip32_path):
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address_n = self.get_client().expand_path(bip32_path)
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node = self.get_client().get_public_node(address_n).node
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xpub = "0488B21E".decode('hex') + chr(node.depth) + self.i4b(node.fingerprint) + self.i4b(node.child_num) + node.chain_code + node.public_key
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return EncodeBase58Check(xpub)
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def get_master_public_key(self):
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if not self.mpk:
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self.mpk = self.get_public_key("44'/0'")
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return self.mpk
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def i4b(self, x):
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return pack('I', x)
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def add_keypairs(self, tx, keypairs, password):
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#do nothing - no priv keys available
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pass
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def decrypt_message(self, pubkey, message, password):
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try:
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address = public_key_to_bc_address(pubkey.decode('hex'))
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address_path = self.address_id(address)
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address_n = self.get_client().expand_path(address_path)
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except Exception, e:
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raise e
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try:
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decrypted_msg = self.get_client().decrypt_message(address_n, b64decode(message))
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except Exception, e:
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raise e
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finally:
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twd.emit(SIGNAL('trezor_done'))
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return str(decrypted_msg)
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def sign_message(self, address, message, password):
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try:
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address_path = self.address_id(address)
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address_n = self.get_client().expand_path(address_path)
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except Exception, e:
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raise
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try:
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msg_sig = self.get_client().sign_message('Bitcoin', address_n, message)
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except Exception, e:
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raise e
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finally:
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twd.emit(SIGNAL('trezor_done'))
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b64_msg_sig = b64encode(msg_sig.signature)
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return str(b64_msg_sig)
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def sign_transaction(self, tx, keypairs, password):
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if tx.error or tx.is_complete():
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return
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if not self.check_proper_device():
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raise Exception('Wrong device or password')
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inputs = self.tx_inputs(tx)
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outputs = self.tx_outputs(tx)
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try:
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signed_tx = self.get_client().sign_tx('Bitcoin', inputs, outputs)[1]
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except Exception, e:
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raise e
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finally:
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twd.emit(SIGNAL('trezor_done'))
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values = [i['value'] for i in tx.inputs]
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raw = signed_tx.encode('hex')
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tx.update(raw)
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for i, txinput in enumerate(tx.inputs):
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txinput['value'] = values[i]
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def tx_inputs(self, tx):
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inputs = []
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for txinput in tx.inputs:
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txinputtype = types.TxInputType()
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address = txinput['address']
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try:
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address_path = self.address_id(address)
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address_n = self.get_client().expand_path(address_path)
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txinputtype.address_n.extend(address_n)
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except: pass
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if ('is_coinbase' in txinput and txinput['is_coinbase']):
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prev_hash = "\0"*32
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prev_index = 0xffffffff # signed int -1
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else:
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prev_hash = unhexlify(txinput['prevout_hash'])
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prev_index = txinput['prevout_n']
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txinputtype.prev_hash = prev_hash
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txinputtype.prev_index = prev_index
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if 'scriptSig' in txinput:
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script_sig = txinput['scriptSig']
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txinputtype.script_sig = script_sig
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if 'sequence' in txinput:
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sequence = txinput['sequence']
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txinputtype.sequence = sequence
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inputs.append(txinputtype)
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#TODO P2SH
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return inputs
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def tx_outputs(self, tx):
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outputs = []
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for type, address, amount in tx.outputs:
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assert type == 'address'
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txoutputtype = types.TxOutputType()
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if self.is_change(address):
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address_path = self.address_id(address)
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address_n = self.get_client().expand_path(address_path)
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txoutputtype.address_n.extend(address_n)
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else:
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txoutputtype.address = address
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txoutputtype.amount = amount
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addrtype, hash_160 = bc_address_to_hash_160(address)
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if addrtype == 0:
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txoutputtype.script_type = types.PAYTOADDRESS
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elif addrtype == 5:
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txoutputtype.script_type = types.PAYTOSCRIPTHASH
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else:
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raise BaseException('addrtype')
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outputs.append(txoutputtype)
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return outputs
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def electrum_tx_to_txtype(self, tx):
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t = types.TransactionType()
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d = deserialize(tx.raw)
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t.version = d['version']
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t.lock_time = d['lockTime']
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inputs = self.tx_inputs(tx)
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t.inputs.extend(inputs)
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for vout in d['outputs']:
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o = t.bin_outputs.add()
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o.amount = vout['value']
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o.script_pubkey = vout['scriptPubKey'].decode('hex')
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return t
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def get_tx(self, tx_hash):
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tx = self.transactions[tx_hash]
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return self.electrum_tx_to_txtype(tx)
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def check_proper_device(self):
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self.get_client().ping('t')
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if not self.device_checked:
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address = self.addresses(False, False)[0]
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address_id = self.address_id(address)
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n = self.get_client().expand_path(address_id)
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device_address = self.get_client().get_address('Bitcoin', n)
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self.device_checked = True
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if device_address != address:
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self.proper_device = False
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else:
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self.proper_device = True
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return self.proper_device
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class TrezorQtGuiMixin(object):
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def __init__(self, *args, **kwargs):
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super(TrezorQtGuiMixin, self).__init__(*args, **kwargs)
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def callback_ButtonRequest(self, msg):
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if msg.code == 3:
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message = "Confirm transaction outputs on Trezor device to continue"
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elif msg.code == 8:
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message = "Confirm transaction fee on Trezor device to continue"
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elif msg.code == 7:
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message = "Confirm message to sign on Trezor device to continue"
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else:
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message = "Check Trezor device to continue"
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twd.start(message)
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return proto.ButtonAck()
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def callback_PinMatrixRequest(self, msg):
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if msg.type == 1:
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desc = 'old PIN'
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elif msg.type == 2:
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desc = 'new PIN'
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elif msg.type == 3:
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desc = 'new PIN again'
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else:
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desc = 'PIN'
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pin = self.pin_dialog(msg="Please enter Trezor %s" % desc)
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if not pin:
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return proto.Cancel()
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return proto.PinMatrixAck(pin=pin)
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def callback_PassphraseRequest(self, msg):
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confirmed, p, passphrase = self.password_dialog()
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if not confirmed:
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QMessageBox.critical(None, _('Error'), _("Password request canceled"), _('OK'))
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return proto.Cancel()
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if passphrase is None:
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passphrase='' # Even blank string is valid Trezor passphrase
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return proto.PassphraseAck(passphrase=passphrase)
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def callback_WordRequest(self, msg):
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#TODO
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log("Enter one word of mnemonic: ")
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word = raw_input()
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return proto.WordAck(word=word)
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def password_dialog(self, msg=None):
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if not msg:
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msg = _("Please enter your Trezor password")
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d = QDialog()
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d.setModal(1)
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d.setLayout( make_password_dialog(d, None, msg, False) )
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return run_password_dialog(d, None, None)
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def pin_dialog(self, msg):
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d = QDialog(None)
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d.setModal(1)
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d.setWindowTitle(_("Enter PIN"))
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matrix = PinMatrixWidget()
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vbox = QVBoxLayout()
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vbox.addWidget(QLabel(msg))
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vbox.addWidget(matrix)
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vbox.addLayout(ok_cancel_buttons(d))
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d.setLayout(vbox)
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if not d.exec_(): return
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return str(matrix.get_value())
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class TrezorWaitingDialog(QThread):
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def __init__(self):
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QThread.__init__(self)
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self.waiting = False
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def start(self, message):
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self.d = QDialog()
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self.d.setModal(1)
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self.d.setWindowTitle('Please Check Trezor Device')
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self.d.setWindowFlags(self.d.windowFlags() | QtCore.Qt.WindowStaysOnTopHint)
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l = QLabel(message)
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vbox = QVBoxLayout(self.d)
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vbox.addWidget(l)
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self.d.show()
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if not self.waiting:
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self.waiting = True
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self.d.connect(twd, SIGNAL('trezor_done'), self.stop)
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def stop(self):
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self.d.hide()
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self.waiting = False
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if TREZOR:
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class QtGuiTrezorClient(ProtocolMixin, TrezorQtGuiMixin, BaseClient):
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def call_raw(self, msg):
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try:
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resp = BaseClient.call_raw(self, msg)
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except ConnectionError:
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self.bad = True
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raise
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return resp
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twd = TrezorWaitingDialog()
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