Beispiel #1
0
    def __init__(self, config, daemon, plugins):

        self.config = config
        self.network = daemon.network
        self.preblockhash = self.network.get_pre_blockhash()
        storage = WalletStorage(config.get_wallet_path())
        if not storage.file_exists():
            print("Wallet not found. try 'electrum create'")
            exit()
        if storage.is_encrypted():
            password = getpass.getpass('Password:'******'')
        self.encoding = locale.getpreferredencoding()

        self.stdscr = curses.initscr()
        curses.noecho()
        curses.cbreak()
        curses.start_color()
        curses.use_default_colors()
        curses.init_pair(1, curses.COLOR_WHITE, curses.COLOR_BLUE)
        curses.init_pair(2, curses.COLOR_WHITE, curses.COLOR_CYAN)
        curses.init_pair(3, curses.COLOR_BLACK, curses.COLOR_WHITE)
        self.stdscr.keypad(1)
        self.stdscr.border(0)
        self.maxy, self.maxx = self.stdscr.getmaxyx()
        self.set_cursor(0)
        self.w = curses.newwin(10, 50, 5, 5)

        set_verbosity(False)
        self.tab = 0
        self.pos = 0
        self.popup_pos = 0

        self.str_recipient = ""
        self.str_description = ""
        self.str_amount = ""
        self.str_fee = ""
        self.history = None

        if self.network:
            self.network.register_callback(self.update, ['updated'])

        self.tab_names = [
            _("History"),
            _("Send"),
            _("Receive"),
            _("Addresses"),
            _("Contacts"),
            _("Banner")
        ]
        self.num_tabs = len(self.tab_names)
Beispiel #2
0
    def __init__(self, config, daemon, plugins):

        self.config = config
        self.network = daemon.network
        storage = WalletStorage(config.get_wallet_path())
        if not storage.file_exists():
            print("Wallet not found. try 'electrum create'")
            exit()
        if storage.is_encrypted():
            password = getpass.getpass('Password:'******'')
        self.encoding = locale.getpreferredencoding()

        self.stdscr = curses.initscr()
        curses.noecho()
        curses.cbreak()
        curses.start_color()
        curses.use_default_colors()
        curses.init_pair(1, curses.COLOR_WHITE, curses.COLOR_BLUE)
        curses.init_pair(2, curses.COLOR_WHITE, curses.COLOR_CYAN)
        curses.init_pair(3, curses.COLOR_BLACK, curses.COLOR_WHITE)
        self.stdscr.keypad(1)
        self.stdscr.border(0)
        self.maxy, self.maxx = self.stdscr.getmaxyx()
        self.set_cursor(0)
        self.w = curses.newwin(10, 50, 5, 5)

        set_verbosity(False)
        self.tab = 0
        self.pos = 0
        self.popup_pos = 0

        self.str_recipient = ""
        self.str_description = ""
        self.str_amount = ""
        self.str_fee = ""
        self.history = None

        if self.network:
            self.network.register_callback(self.update, ['updated'])

        self.tab_names = [_("History"), _("Send"), _("Receive"), _("Addresses"), _("Contacts"), _("Banner")]
        self.num_tabs = len(self.tab_names)
Beispiel #3
0
    def __init__(self, *, config, daemon, plugins):
        BaseElectrumGui.__init__(self,
                                 config=config,
                                 daemon=daemon,
                                 plugins=plugins)
        self.network = daemon.network
        storage = WalletStorage(config.get_wallet_path())
        if not storage.file_exists():
            print("Wallet not found. try 'electrum create'")
            exit()
        if storage.is_encrypted():
            password = getpass.getpass('Password:', stream=None)
            storage.decrypt(password)

        db = WalletDB(storage.read(), manual_upgrades=False)

        self.done = 0
        self.last_balance = ""

        self.str_recipient = ""
        self.str_description = ""
        self.str_amount = ""
        self.str_fee = ""

        self.wallet = Wallet(db, storage,
                             config=config)  # type: Optional[Abstract_Wallet]
        self.wallet.start_network(self.network)
        self.contacts = self.wallet.contacts

        self.register_callbacks()
        self.commands = [_("[h] - displays this help text"), \
                         _("[i] - display transaction history"), \
                         _("[o] - enter payment order"), \
                         _("[p] - print stored payment order"), \
                         _("[s] - send stored payment order"), \
                         _("[r] - show own receipt addresses"), \
                         _("[c] - display contacts"), \
                         _("[b] - print server banner"), \
                         _("[q] - quit")]
        self.num_commands = len(self.commands)
Beispiel #4
0
    def __init__(self, config, daemon, plugins):
        self.config = config
        self.network = daemon.network
        storage = WalletStorage(config.get_wallet_path())
        if not storage.file_exists:
            print("Wallet not found. try 'electrum-bitg create'")
            exit()
        if storage.is_encrypted():
            password = getpass.getpass('Password:'******'wallet_updated', 'network_updated', 'banner'])
        self.commands = [_("[h] - displays this help text"), \
                         _("[i] - display transaction history"), \
                         _("[o] - enter payment order"), \
                         _("[p] - print stored payment order"), \
                         _("[s] - send stored payment order"), \
                         _("[r] - show own receipt addresses"), \
                         _("[c] - display contacts"), \
                         _("[b] - print server banner"), \
                         _("[q] - quit") ]
        self.num_commands = len(self.commands)
Beispiel #5
0
    def __init__(self, config, daemon, plugins):
        self.config = config
        self.network = daemon.network
        storage = WalletStorage(config.get_wallet_path())
        if not storage.file_exists:
            print("Wallet not found. try 'pkpay create'")
            exit()
        if storage.is_encrypted():
            password = getpass.getpass('Password:'******'wallet_updated', 'network_updated', 'banner'])
        self.commands = [_("[h] - displays this help text"),
                         _("[i] - display transaction history"),
                         _("[o] - enter payment order"),
                         _("[p] - print stored payment order"),
                         _("[s] - send stored payment order"),
                         _("[r] - show own receipt addresses"),
                         _("[c] - display contacts"),
                         _("[b] - print server banner"),
                         _("[q] - quit")]
        self.num_commands = len(self.commands)
Beispiel #6
0
    def __init__(self, config, daemon, plugins):
        self.config = config
        self.network = daemon.network
        storage = WalletStorage(config.get_wallet_path())
        if not storage.file_exists:
            print("Wallet not found. try 'electrum create'")
            exit()
        if storage.is_encrypted():
            password = getpass.getpass('Password:'******'updated', 'banner'])
        self.commands = [_("[h] - displays this help text"), \
                         _("[i] - display transaction history"), \
                         _("[o] - enter payment order"), \
                         _("[p] - print stored payment order"), \
                         _("[s] - send stored payment order"), \
                         _("[r] - show own receipt addresses"), \
                         _("[c] - display contacts"), \
                         _("[b] - print server banner"), \
                         _("[q] - quit") ]
        self.num_commands = len(self.commands)
Beispiel #7
0
class InstallWizard(QDialog, MessageBoxMixin, BaseWizard):

    accept_signal = pyqtSignal()
    synchronized_signal = pyqtSignal(str)

    def __init__(self, config, app, plugins, storage):
        BaseWizard.__init__(self, config, storage)
        QDialog.__init__(self, None)
        self.setWindowTitle('Electrum  -  ' + _('Install Wizard'))
        self.app = app
        self.config = config
        # Set for base base class
        self.plugins = plugins
        self.language_for_seed = config.get('language')
        self.setMinimumSize(600, 400)
        self.accept_signal.connect(self.accept)
        self.title = QLabel()
        self.main_widget = QWidget()
        self.back_button = QPushButton(_("Back"), self)
        self.back_button.setText(
            _('Back') if self.can_go_back() else _('Cancel'))
        self.next_button = QPushButton(_("Next"), self)
        self.next_button.setDefault(True)
        self.logo = QLabel()
        self.please_wait = QLabel(_("Please wait..."))
        self.please_wait.setAlignment(Qt.AlignCenter)
        self.icon_filename = None
        self.loop = QEventLoop()
        self.rejected.connect(lambda: self.loop.exit(0))
        self.back_button.clicked.connect(lambda: self.loop.exit(1))
        self.next_button.clicked.connect(lambda: self.loop.exit(2))
        outer_vbox = QVBoxLayout(self)
        inner_vbox = QVBoxLayout()
        inner_vbox.addWidget(self.title)
        inner_vbox.addWidget(self.main_widget)
        inner_vbox.addStretch(1)
        inner_vbox.addWidget(self.please_wait)
        inner_vbox.addStretch(1)
        scroll_widget = QWidget()
        scroll_widget.setLayout(inner_vbox)
        scroll = QScrollArea()
        scroll.setWidget(scroll_widget)
        scroll.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        scroll.setWidgetResizable(True)
        icon_vbox = QVBoxLayout()
        icon_vbox.addWidget(self.logo)
        icon_vbox.addStretch(1)
        hbox = QHBoxLayout()
        hbox.addLayout(icon_vbox)
        hbox.addSpacing(5)
        hbox.addWidget(scroll)
        hbox.setStretchFactor(scroll, 1)
        outer_vbox.addLayout(hbox)
        outer_vbox.addLayout(Buttons(self.back_button, self.next_button))
        self.set_icon(':icons/electrum.png')
        self.show()
        self.raise_()
        self.refresh_gui()  # Need for QT on MacOSX.  Lame.

    def run_and_get_wallet(self, get_wallet_from_daemon):

        vbox = QVBoxLayout()
        hbox = QHBoxLayout()
        hbox.addWidget(QLabel(_('Wallet') + ':'))
        self.name_e = QLineEdit()
        hbox.addWidget(self.name_e)
        button = QPushButton(_('Choose...'))
        hbox.addWidget(button)
        vbox.addLayout(hbox)

        self.msg_label = QLabel('')
        vbox.addWidget(self.msg_label)
        hbox2 = QHBoxLayout()
        self.pw_e = QLineEdit('', self)
        self.pw_e.setFixedWidth(150)
        self.pw_e.setEchoMode(2)
        self.pw_label = QLabel(_('Password') + ':')
        hbox2.addWidget(self.pw_label)
        hbox2.addWidget(self.pw_e)
        hbox2.addStretch()
        vbox.addLayout(hbox2)
        self.set_layout(vbox, title=_('Electrum wallet'))

        wallet_folder = os.path.dirname(self.storage.path)

        def on_choose():
            path, __ = QFileDialog.getOpenFileName(self,
                                                   "Select your wallet file",
                                                   wallet_folder)
            if path:
                self.name_e.setText(path)

        def on_filename(filename):
            path = os.path.join(wallet_folder, filename)
            wallet_from_memory = get_wallet_from_daemon(path)
            try:
                if wallet_from_memory:
                    self.storage = wallet_from_memory.storage
                else:
                    self.storage = WalletStorage(path, manual_upgrades=True)
                self.next_button.setEnabled(True)
            except BaseException:
                traceback.print_exc(file=sys.stderr)
                self.storage = None
                self.next_button.setEnabled(False)
            if self.storage:
                if not self.storage.file_exists():
                    msg =_("This file does not exist.") + '\n' \
                          + _("Press 'Next' to create this wallet, or choose another file.")
                    pw = False
                elif not wallet_from_memory:
                    if self.storage.is_encrypted_with_user_pw():
                        msg = _("This file is encrypted with a password.") + '\n' \
                              + _('Enter your password or choose another file.')
                        pw = True
                    elif self.storage.is_encrypted_with_hw_device():
                        msg = _("This file is encrypted using a hardware device.") + '\n' \
                              + _("Press 'Next' to choose device to decrypt.")
                        pw = False
                    else:
                        msg = _("Press 'Next' to open this wallet.")
                        pw = False
                else:
                    msg = _("This file is already open in memory.") + "\n" \
                        + _("Press 'Next' to create/focus window.")
                    pw = False
            else:
                msg = _('Cannot read file')
                pw = False
            self.msg_label.setText(msg)
            if pw:
                self.pw_label.show()
                self.pw_e.show()
                self.pw_e.setFocus()
            else:
                self.pw_label.hide()
                self.pw_e.hide()

        button.clicked.connect(on_choose)
        self.name_e.textChanged.connect(on_filename)
        n = os.path.basename(self.storage.path)
        self.name_e.setText(n)

        while True:
            if self.storage.file_exists() and not self.storage.is_encrypted():
                break
            if self.loop.exec_() != 2:  # 2 = next
                return
            if not self.storage.file_exists():
                break
            wallet_from_memory = get_wallet_from_daemon(self.storage.path)
            if wallet_from_memory:
                return wallet_from_memory
            if self.storage.file_exists() and self.storage.is_encrypted():
                if self.storage.is_encrypted_with_user_pw():
                    password = self.pw_e.text()
                    try:
                        self.storage.decrypt(password)
                        break
                    except InvalidPassword as e:
                        QMessageBox.information(None, _('Error'), str(e))
                        continue
                    except BaseException as e:
                        traceback.print_exc(file=sys.stdout)
                        QMessageBox.information(None, _('Error'), str(e))
                        return
                elif self.storage.is_encrypted_with_hw_device():
                    try:
                        self.run('choose_hw_device', HWD_SETUP_DECRYPT_WALLET)
                    except InvalidPassword as e:
                        QMessageBox.information(
                            None, _('Error'),
                            _('Failed to decrypt using this hardware device.')
                            + '\n' +
                            _('If you use a passphrase, make sure it is correct.'
                              ))
                        self.stack = []
                        return self.run_and_get_wallet(get_wallet_from_daemon)
                    except BaseException as e:
                        traceback.print_exc(file=sys.stdout)
                        QMessageBox.information(None, _('Error'), str(e))
                        return
                    if self.storage.is_past_initial_decryption():
                        break
                    else:
                        return
                else:
                    raise Exception('Unexpected encryption version')

        path = self.storage.path
        if self.storage.requires_split():
            self.hide()
            msg = _(
                "The wallet '{}' contains multiple accounts, which are no longer supported since Electrum 2.7.\n\n"
                "Do you want to split your wallet into multiple files?"
            ).format(path)
            if not self.question(msg):
                return
            file_list = '\n'.join(self.storage.split_accounts())
            msg = _('Your accounts have been moved to'
                    ) + ':\n' + file_list + '\n\n' + _(
                        'Do you want to delete the old file') + ':\n' + path
            if self.question(msg):
                os.remove(path)
                self.show_warning(_('The file was removed'))
            return

        if self.storage.requires_upgrade():
            self.storage.upgrade()
            self.wallet = Wallet(self.storage)
            return self.wallet

        action = self.storage.get_action()
        if action and action != 'new':
            self.hide()
            msg = _("The file '{}' contains an incompletely created wallet.\n"
                    "Do you want to complete its creation now?").format(path)
            if not self.question(msg):
                if self.question(
                        _("Do you want to delete '{}'?").format(path)):
                    os.remove(path)
                    self.show_warning(_('The file was removed'))
                return
            self.show()
        if action:
            # self.wallet is set in run
            self.run(action)
            return self.wallet

        self.wallet = Wallet(self.storage)
        return self.wallet

    def finished(self):
        """Called in hardware client wrapper, in order to close popups."""
        return

    def on_error(self, exc_info):
        if not isinstance(exc_info[1], UserCancelled):
            traceback.print_exception(*exc_info)
            self.show_error(str(exc_info[1]))

    def set_icon(self, filename):
        prior_filename, self.icon_filename = self.icon_filename, filename
        self.logo.setPixmap(QPixmap(filename).scaledToWidth(60))
        return prior_filename

    def set_layout(self, layout, title=None, next_enabled=True):
        self.title.setText("<b>%s</b>" % title if title else "")
        self.title.setVisible(bool(title))
        # Get rid of any prior layout by assigning it to a temporary widget
        prior_layout = self.main_widget.layout()
        if prior_layout:
            QWidget().setLayout(prior_layout)
        self.main_widget.setLayout(layout)
        self.back_button.setEnabled(True)
        self.next_button.setEnabled(next_enabled)
        if next_enabled:
            self.next_button.setFocus()
        self.main_widget.setVisible(True)
        self.please_wait.setVisible(False)

    def exec_layout(self,
                    layout,
                    title=None,
                    raise_on_cancel=True,
                    next_enabled=True):
        self.set_layout(layout, title, next_enabled)
        result = self.loop.exec_()
        if not result and raise_on_cancel:
            raise UserCancelled
        if result == 1:
            raise GoBack from None
        self.title.setVisible(False)
        self.back_button.setEnabled(False)
        self.next_button.setEnabled(False)
        self.main_widget.setVisible(False)
        self.please_wait.setVisible(True)
        self.refresh_gui()
        return result

    def refresh_gui(self):
        # For some reason, to refresh the GUI this needs to be called twice
        self.app.processEvents()
        self.app.processEvents()

    def remove_from_recently_open(self, filename):
        self.config.remove_from_recently_open(filename)

    def text_input(self, title, message, is_valid, allow_multi=False):
        slayout = KeysLayout(parent=self,
                             title=message,
                             is_valid=is_valid,
                             allow_multi=allow_multi)
        self.exec_layout(slayout, title, next_enabled=False)
        return slayout.get_text()

    def seed_input(self, title, message, is_seed, options):
        slayout = SeedLayout(title=message,
                             is_seed=is_seed,
                             options=options,
                             parent=self)
        self.exec_layout(slayout, title, next_enabled=False)
        return slayout.get_seed(), slayout.is_bip39, slayout.is_ext

    @wizard_dialog
    def add_xpub_dialog(self,
                        title,
                        message,
                        is_valid,
                        run_next,
                        allow_multi=False):
        return self.text_input(title, message, is_valid, allow_multi)

    @wizard_dialog
    def add_cosigner_dialog(self, run_next, index, is_valid):
        title = _("Add Cosigner") + " %d" % index
        message = ' '.join([
            _('Please enter the master public key (xpub) of your cosigner.'),
            _('Enter their master private key (xprv) if you want to be able to sign for them.'
              )
        ])
        return self.text_input(title, message, is_valid)

    @wizard_dialog
    def restore_seed_dialog(self, run_next, test):
        options = []
        if self.opt_ext:
            options.append('ext')
        if self.opt_bip39:
            options.append('bip39')
        title = _('Enter Seed')
        message = _(
            'Please enter your seed phrase in order to restore your wallet.')
        return self.seed_input(title, message, test, options)

    @wizard_dialog
    def confirm_seed_dialog(self, run_next, test):
        self.app.clipboard().clear()
        title = _('Confirm Seed')
        message = ' '.join([
            _('Your seed is important!'),
            _('If you lose your seed, your money will be permanently lost.'),
            _('To make sure that you have properly saved your seed, please retype it here.'
              )
        ])
        seed, is_bip39, is_ext = self.seed_input(title, message, test, None)
        return seed

    @wizard_dialog
    def show_seed_dialog(self, run_next, seed_text):
        title = _("Your wallet generation seed is:")
        slayout = SeedLayout(seed=seed_text,
                             title=title,
                             msg=True,
                             options=['ext'])
        self.exec_layout(slayout)
        return slayout.is_ext

    def pw_layout(self, msg, kind, force_disable_encrypt_cb):
        playout = PasswordLayout(
            None,
            msg,
            kind,
            self.next_button,
            force_disable_encrypt_cb=force_disable_encrypt_cb)
        playout.encrypt_cb.setChecked(True)
        self.exec_layout(playout.layout())
        return playout.new_password(), playout.encrypt_cb.isChecked()

    @wizard_dialog
    def request_password(self, run_next, force_disable_encrypt_cb=False):
        """Request the user enter a new password and confirm it.  Return
        the password or None for no password."""
        return self.pw_layout(MSG_ENTER_PASSWORD, PW_NEW,
                              force_disable_encrypt_cb)

    @wizard_dialog
    def request_storage_encryption(self, run_next):
        playout = PasswordLayoutForHW(None, MSG_HW_STORAGE_ENCRYPTION, PW_NEW,
                                      self.next_button)
        playout.encrypt_cb.setChecked(True)
        self.exec_layout(playout.layout())
        return playout.encrypt_cb.isChecked()

    def show_restore(self, wallet, network):
        # FIXME: these messages are shown after the install wizard is
        # finished and the window closed.  On macOS they appear parented
        # with a re-appeared ghost install wizard window...
        if network:

            def task():
                wallet.wait_until_synchronized()
                if wallet.is_found():
                    msg = _("Recovery successful")
                else:
                    msg = _("No transactions found for this seed")
                self.synchronized_signal.emit(msg)

            self.synchronized_signal.connect(self.show_message)
            t = threading.Thread(target=task)
            t.daemon = True
            t.start()
        else:
            msg = _("This wallet was restored offline. It may "
                    "contain more addresses than displayed.")
            self.show_message(msg)

    @wizard_dialog
    def confirm_dialog(self, title, message, run_next):
        self.confirm(message, title)

    def confirm(self, message, title):
        label = WWLabel(message)
        vbox = QVBoxLayout()
        vbox.addWidget(label)
        self.exec_layout(vbox, title)

    @wizard_dialog
    def action_dialog(self, action, run_next):
        self.run(action)

    def terminate(self):
        self.accept_signal.emit()

    def waiting_dialog(self, task, msg):
        self.please_wait.setText(msg)
        self.refresh_gui()
        t = threading.Thread(target=task)
        t.start()
        t.join()

    @wizard_dialog
    def choice_dialog(self, title, message, choices, run_next):
        c_values = [x[0] for x in choices]
        c_titles = [x[1] for x in choices]
        clayout = ChoicesLayout(message, c_titles)
        vbox = QVBoxLayout()
        vbox.addLayout(clayout.layout())
        self.exec_layout(vbox, title)
        action = c_values[clayout.selected_index()]
        return action

    def query_choice(self, msg, choices):
        """called by hardware wallets"""
        clayout = ChoicesLayout(msg, choices)
        vbox = QVBoxLayout()
        vbox.addLayout(clayout.layout())
        self.exec_layout(vbox, '')
        return clayout.selected_index()

    @wizard_dialog
    def line_dialog(self,
                    run_next,
                    title,
                    message,
                    default,
                    test,
                    warning='',
                    presets=()):
        vbox = QVBoxLayout()
        vbox.addWidget(WWLabel(message))
        line = QLineEdit()
        line.setText(default)

        def f(text):
            self.next_button.setEnabled(test(text))

        line.textEdited.connect(f)
        vbox.addWidget(line)
        vbox.addWidget(WWLabel(warning))

        for preset in presets:
            button = QPushButton(preset[0])
            button.clicked.connect(
                lambda __, text=preset[1]: line.setText(text))
            button.setMaximumWidth(150)
            hbox = QHBoxLayout()
            hbox.addWidget(button, Qt.AlignCenter)
            vbox.addLayout(hbox)

        self.exec_layout(vbox, title, next_enabled=test(default))
        return ' '.join(line.text().split())

    @wizard_dialog
    def show_xpub_dialog(self, xpub, run_next):
        msg = ' '.join([
            _("Here is your master public key."),
            _("Please share it with your cosigners.")
        ])
        vbox = QVBoxLayout()
        layout = SeedLayout(xpub, title=msg, icon=False, for_seed_words=False)
        vbox.addLayout(layout.layout())
        self.exec_layout(vbox, _('Master Public Key'))
        return None

    def init_network(self, network):
        message = _("Electrum communicates with remote servers to get "
                    "information about your transactions and addresses. The "
                    "servers all fulfill the same purpose only differing in "
                    "hardware. In most cases you simply want to let Electrum "
                    "pick one at random.  However if you prefer feel free to "
                    "select a server manually.")
        choices = [_("Auto connect"), _("Select server manually")]
        title = _("How do you want to connect to a server? ")
        clayout = ChoicesLayout(message, choices)
        self.back_button.setText(_('Cancel'))
        self.exec_layout(clayout.layout(), title)
        r = clayout.selected_index()
        if r == 1:
            nlayout = NetworkChoiceLayout(network, self.config, wizard=True)
            if self.exec_layout(nlayout.layout()):
                nlayout.accept()
        else:
            network.auto_connect = True
            self.config.set_key('auto_connect', True, True)

    @wizard_dialog
    def multisig_dialog(self, run_next):
        cw = CosignWidget(2, 2)
        m_edit = QSlider(Qt.Horizontal, self)
        n_edit = QSlider(Qt.Horizontal, self)
        n_edit.setMinimum(2)
        n_edit.setMaximum(15)
        m_edit.setMinimum(1)
        m_edit.setMaximum(2)
        n_edit.setValue(2)
        m_edit.setValue(2)
        n_label = QLabel()
        m_label = QLabel()
        grid = QGridLayout()
        grid.addWidget(n_label, 0, 0)
        grid.addWidget(n_edit, 0, 1)
        grid.addWidget(m_label, 1, 0)
        grid.addWidget(m_edit, 1, 1)

        def on_m(m):
            m_label.setText(_('Require {0} signatures').format(m))
            cw.set_m(m)

        def on_n(n):
            n_label.setText(_('From {0} cosigners').format(n))
            cw.set_n(n)
            m_edit.setMaximum(n)

        n_edit.valueChanged.connect(on_n)
        m_edit.valueChanged.connect(on_m)
        on_n(2)
        on_m(2)
        vbox = QVBoxLayout()
        vbox.addWidget(cw)
        vbox.addWidget(
            WWLabel(
                _("Choose the number of signatures needed to unlock funds in your wallet:"
                  )))
        vbox.addLayout(grid)
        self.exec_layout(vbox, _("Multi-Signature Wallet"))
        m = int(m_edit.value())
        n = int(n_edit.value())
        return (m, n)
Beispiel #8
0
class InstallWizard(QDialog, MessageBoxMixin, BaseWizard):

    def __init__(self, config, app, plugins, storage):

        BaseWizard.__init__(self, config, storage)
        QDialog.__init__(self, None)

        self.setWindowTitle('Electrum  -  ' + _('Install Wizard'))
        self.app = app
        self.config = config

        # Set for base base class
        self.plugins = plugins
        self.language_for_seed = config.get('language')
        self.setMinimumSize(600, 400)
        self.connect(self, QtCore.SIGNAL('accept'), self.accept)
        self.title = QLabel()
        self.main_widget = QWidget()
        self.back_button = QPushButton(_("Back"), self)
        self.next_button = QPushButton(_("Next"), self)
        self.next_button.setDefault(True)
        self.logo = QLabel()
        self.please_wait = QLabel(_("Please wait..."))
        self.please_wait.setAlignment(Qt.AlignCenter)
        self.icon_filename = None
        self.loop = QEventLoop()
        self.rejected.connect(lambda: self.loop.exit(0))
        self.back_button.clicked.connect(lambda: self.loop.exit(1))
        self.next_button.clicked.connect(lambda: self.loop.exit(2))
        outer_vbox = QVBoxLayout(self)
        inner_vbox = QVBoxLayout()
        inner_vbox = QVBoxLayout()
        inner_vbox.addWidget(self.title)
        inner_vbox.addWidget(self.main_widget)
        inner_vbox.addStretch(1)
        inner_vbox.addWidget(self.please_wait)
        inner_vbox.addStretch(1)
        icon_vbox = QVBoxLayout()
        icon_vbox.addWidget(self.logo)
        icon_vbox.addStretch(1)
        hbox = QHBoxLayout()
        hbox.addLayout(icon_vbox)
        hbox.addSpacing(5)
        hbox.addLayout(inner_vbox)
        hbox.setStretchFactor(inner_vbox, 1)
        outer_vbox.addLayout(hbox)
        outer_vbox.addLayout(Buttons(self.back_button, self.next_button))
        self.set_icon(':icons/electrum.png')
        self.show()
        self.raise_()
        self.refresh_gui()  # Need for QT on MacOSX.  Lame.

    def run_and_get_wallet(self):

        def on_filename():
            wallet_folder = os.path.dirname(self.storage.path)
            path = unicode(QFileDialog.getOpenFileName(self, "Select your wallet file", wallet_folder))
            if path:
                self.name_e.setText(path)
                self.storage = WalletStorage(path)
                update_layout()
        def update_layout():
            name = os.path.basename(self.storage.path)
            vbox = QVBoxLayout()
            hbox = QHBoxLayout()
            hbox.addWidget(QLabel(_('Wallet') + ':'))
            self.name_e = QLineEdit(text=name)
            hbox.addWidget(self.name_e)
            button = QPushButton(_('Choose...'))
            button.clicked.connect(on_filename)
            hbox.addWidget(button)
            vbox.addLayout(hbox)
            self.pw_e = None

            if not self.storage.file_exists():
                msg = _("This file does not exist.") + '\n' \
                      + _("Press 'Next' to create this wallet, or chose another file.")
                vbox.addWidget(QLabel(msg))

            elif self.storage.file_exists() and self.storage.is_encrypted():
                msg = _("This file is encrypted.") + '\n' + _('Enter your password or choose another file.')
                vbox.addWidget(QLabel(msg))
                hbox2 = QHBoxLayout()
                self.pw_e = QLineEdit('', self)
                self.pw_e.setFixedWidth(150)
                self.pw_e.setEchoMode(2)
                hbox2.addWidget(QLabel(_('Password') + ':'))
                hbox2.addWidget(self.pw_e)
                hbox2.addStretch()
                vbox.addLayout(hbox2)
            else:
                msg = _("Press 'Next' to open this wallet.")
                vbox.addWidget(QLabel(msg))

            self.set_layout(vbox, title=_('Electrum wallet'))
            if self.pw_e:
                self.pw_e.show()
                self.pw_e.setFocus()

        while True:
            update_layout()

            if self.storage.file_exists() and not self.storage.is_encrypted():
                break

            if not self.loop.exec_():
                return

            if not self.storage.file_exists():
                break

            if self.storage.file_exists() and self.storage.is_encrypted():
                password = unicode(self.pw_e.text())
                try:
                    self.storage.decrypt(password)
                    break
                except InvalidPassword as e:
                    QMessageBox.information(None, _('Error'), str(e), _('OK'))
                    continue
                except BaseException as e:
                    traceback.print_exc(file=sys.stdout)
                    QMessageBox.information(None, _('Error'), str(e), _('OK'))
                    return


        path = self.storage.path
        if self.storage.requires_split():
            self.hide()
            msg = _("The wallet '%s' contains multiple accounts, which are no longer supported in Electrum 2.7.\n\n"
                    "Do you want to split your wallet into multiple files?"%path)
            if not self.question(msg):
                return
            file_list = '\n'.join(self.storage.split_accounts())
            msg = _('Your accounts have been moved to') + ':\n' + file_list + '\n\n'+ _('Do you want to delete the old file') + ':\n' + path
            if self.question(msg):
                os.remove(path)
                self.show_warning(_('The file was removed'))
            return

        if self.storage.requires_upgrade():
            self.hide()
            msg = _("The format of your wallet '%s' must be upgraded for Electrum. This change will not be backward compatible"%path)
            if not self.question(msg):
                return
            self.storage.upgrade()
            self.show_warning(_('Your wallet was upgraded successfully'))
            self.wallet = Wallet(self.storage)
            self.terminate()
            return self.wallet

        action = self.storage.get_action()
        if action and action != 'new':
            self.hide()
            msg = _("The file '%s' contains an incompletely created wallet.\n"
                    "Do you want to complete its creation now?") % path
            if not self.question(msg):
                if self.question(_("Do you want to delete '%s'?") % path):
                    os.remove(path)
                    self.show_warning(_('The file was removed'))
                return
            self.show()
        if action:
            # self.wallet is set in run
            self.run(action)
            return self.wallet

        self.wallet = Wallet(self.storage)
        self.terminate()
        return self.wallet



    def finished(self):
        """Called in hardware client wrapper, in order to close popups."""
        return

    def on_error(self, exc_info):
        if not isinstance(exc_info[1], UserCancelled):
            traceback.print_exception(*exc_info)
            self.show_error(str(exc_info[1]))

    def set_icon(self, filename):
        prior_filename, self.icon_filename = self.icon_filename, filename
        self.logo.setPixmap(QPixmap(filename).scaledToWidth(60))
        return prior_filename

    def set_layout(self, layout, title=None, raise_on_cancel=True,
                        next_enabled=True):
        self.title.setText("<b>%s</b>"%title if title else "")
        self.title.setVisible(bool(title))
        # Get rid of any prior layout by assigning it to a temporary widget
        prior_layout = self.main_widget.layout()
        if prior_layout:
            QWidget().setLayout(prior_layout)
        self.main_widget.setLayout(layout)
        self.back_button.setEnabled(True)
        self.next_button.setEnabled(next_enabled)
        if next_enabled:
            self.next_button.setFocus()
        self.main_widget.setVisible(True)
        self.please_wait.setVisible(False)

    def exec_layout(self, layout, title=None, raise_on_cancel=True,
                        next_enabled=True):
        self.set_layout(layout, title, next_enabled)
        result = self.loop.exec_()
        if not result and raise_on_cancel:
            raise UserCancelled
        if result == 1:
            raise GoBack
        self.title.setVisible(False)
        self.back_button.setEnabled(False)
        self.next_button.setEnabled(False)
        self.main_widget.setVisible(False)
        self.please_wait.setVisible(True)
        self.refresh_gui()
        return result

    def refresh_gui(self):
        # For some reason, to refresh the GUI this needs to be called twice
        self.app.processEvents()
        self.app.processEvents()

    def remove_from_recently_open(self, filename):
        self.config.remove_from_recently_open(filename)

    def text_input(self, title, message, is_valid):
        slayout = KeysLayout(parent=self, title=message, is_valid=is_valid)
        self.exec_layout(slayout, title, next_enabled=False)
        return slayout.get_text()

    def seed_input(self, title, message, is_seed, options):
        slayout = SeedLayout(title=message, is_seed=is_seed, options=options, parent=self)
        self.exec_layout(slayout, title, next_enabled=False)
        return slayout.get_seed(), slayout.is_bip39, slayout.is_ext

    @wizard_dialog
    def add_xpub_dialog(self, title, message, is_valid, run_next):
        return self.text_input(title, message, is_valid)

    @wizard_dialog
    def add_cosigner_dialog(self, run_next, index, is_valid):
        title = _("Add Cosigner") + " %d"%index
        message = ' '.join([
            _('Please enter the master public key (xpub) of your cosigner.'),
            _('Enter their master private key (xprv) if you want to be able to sign for them.')
        ])
        return self.text_input(title, message, is_valid)

    @wizard_dialog
    def restore_seed_dialog(self, run_next, test):
        options = []
        if self.opt_ext:
            options.append('ext')
        if self.opt_bip39:
            options.append('bip39')
        title = _('Enter Seed')
        message = _('Please enter your seed phrase in order to restore your wallet.')
        return self.seed_input(title, message, test, options)

    @wizard_dialog
    def confirm_seed_dialog(self, run_next, test):
        self.app.clipboard().clear()
        title = _('Confirm Seed')
        message = ' '.join([
            _('Your seed is important!'),
            _('If you lose your seed, your money will be permanently lost.'),
            _('To make sure that you have properly saved your seed, please retype it here.')
        ])
        seed, is_bip39, is_ext = self.seed_input(title, message, test, None)
        return seed

    @wizard_dialog
    def show_seed_dialog(self, run_next, seed_text):
        title =  _("Your wallet generation seed is:")
        slayout = SeedLayout(seed=seed_text, title=title, msg=True, options=['ext'])
        self.exec_layout(slayout)
        return slayout.is_ext

    def pw_layout(self, msg, kind):
        playout = PasswordLayout(None, msg, kind, self.next_button)
        playout.encrypt_cb.setChecked(True)
        self.exec_layout(playout.layout())
        return playout.new_password(), playout.encrypt_cb.isChecked()

    @wizard_dialog
    def request_password(self, run_next):
        """Request the user enter a new password and confirm it.  Return
        the password or None for no password."""
        return self.pw_layout(MSG_ENTER_PASSWORD, PW_NEW)

    def show_restore(self, wallet, network):
        # FIXME: these messages are shown after the install wizard is
        # finished and the window closed.  On MacOSX they appear parented
        # with a re-appeared ghost install wizard window...
        if network:
            def task():
                wallet.wait_until_synchronized()
                if wallet.is_found():
                    msg = _("Recovery successful")
                else:
                    msg = _("No transactions found for this seed")
                self.emit(QtCore.SIGNAL('synchronized'), msg)
            self.connect(self, QtCore.SIGNAL('synchronized'), self.show_message)
            t = threading.Thread(target = task)
            t.daemon = True
            t.start()
        else:
            msg = _("This wallet was restored offline. It may "
                    "contain more addresses than displayed.")
            self.show_message(msg)

    @wizard_dialog
    def confirm_dialog(self, title, message, run_next):
        self.confirm(message, title)

    def confirm(self, message, title):
        vbox = QVBoxLayout()
        vbox.addWidget(WWLabel(message))
        self.exec_layout(vbox, title)

    @wizard_dialog
    def action_dialog(self, action, run_next):
        self.run(action)

    def terminate(self):
        self.emit(QtCore.SIGNAL('accept'))

    def waiting_dialog(self, task, msg):
        self.please_wait.setText(MSG_GENERATING_WAIT)
        self.refresh_gui()
        t = threading.Thread(target = task)
        t.start()
        t.join()

    @wizard_dialog
    def choice_dialog(self, title, message, choices, run_next):
        c_values = map(lambda x: x[0], choices)
        c_titles = map(lambda x: x[1], choices)
        clayout = ChoicesLayout(message, c_titles)
        vbox = QVBoxLayout()
        vbox.addLayout(clayout.layout())
        self.exec_layout(vbox, title)
        action = c_values[clayout.selected_index()]
        return action

    def query_choice(self, msg, choices):
        """called by hardware wallets"""
        clayout = ChoicesLayout(msg, choices)
        vbox = QVBoxLayout()
        vbox.addLayout(clayout.layout())
        self.exec_layout(vbox, '')
        return clayout.selected_index()

    @wizard_dialog
    def line_dialog(self, run_next, title, message, default, test, warning=''):
        vbox = QVBoxLayout()
        vbox.addWidget(WWLabel(message))
        line = QLineEdit()
        line.setText(default)
        def f(text):
            self.next_button.setEnabled(test(text))
        line.textEdited.connect(f)
        vbox.addWidget(line)
        vbox.addWidget(WWLabel(warning))
        self.exec_layout(vbox, title, next_enabled=test(default))
        return ' '.join(unicode(line.text()).split())

    @wizard_dialog
    def show_xpub_dialog(self, xpub, run_next):
        msg = ' '.join([
            _("Here is your master public key."),
            _("Please share it with your cosigners.")
        ])
        vbox = QVBoxLayout()
        layout = SeedLayout(xpub, title=msg, icon=False)
        vbox.addLayout(layout.layout())
        self.exec_layout(vbox, _('Master Public Key'))
        return None

    def init_network(self, network):
        message = _("Electrum communicates with remote servers to get "
                  "information about your transactions and addresses. The "
                  "servers all fulfil the same purpose only differing in "
                  "hardware. In most cases you simply want to let Electrum "
                  "pick one at random.  However if you prefer feel free to "
                  "select a server manually.")
        choices = [_("Auto connect"), _("Select server manually")]
        title = _("How do you want to connect to a server? ")
        clayout = ChoicesLayout(message, choices)
        self.back_button.setText(_('Cancel'))
        self.exec_layout(clayout.layout(), title)
        r = clayout.selected_index()
        if r == 0:
            auto_connect = True
        elif r == 1:
            auto_connect = True
            nlayout = NetworkChoiceLayout(network, self.config, wizard=True)
            if self.exec_layout(nlayout.layout()):
                auto_connect = False
        else:
            auto_connect = True
        network.auto_connect = auto_connect
        self.config.set_key('auto_connect', auto_connect, True)

    @wizard_dialog
    def multisig_dialog(self, run_next):
        cw = CosignWidget(2, 2)
        m_edit = QSlider(Qt.Horizontal, self)
        n_edit = QSlider(Qt.Horizontal, self)
        n_edit.setMinimum(2)
        n_edit.setMaximum(15)
        m_edit.setMinimum(1)
        m_edit.setMaximum(2)
        n_edit.setValue(2)
        m_edit.setValue(2)
        n_label = QLabel()
        m_label = QLabel()
        grid = QGridLayout()
        grid.addWidget(n_label, 0, 0)
        grid.addWidget(n_edit, 0, 1)
        grid.addWidget(m_label, 1, 0)
        grid.addWidget(m_edit, 1, 1)
        def on_m(m):
            m_label.setText(_('Require %d signatures')%m)
            cw.set_m(m)
        def on_n(n):
            n_label.setText(_('From %d cosigners')%n)
            cw.set_n(n)
            m_edit.setMaximum(n)
        n_edit.valueChanged.connect(on_n)
        m_edit.valueChanged.connect(on_m)
        on_n(2)
        on_m(2)
        vbox = QVBoxLayout()
        vbox.addWidget(cw)
        vbox.addWidget(WWLabel(_("Choose the number of signatures needed to unlock funds in your wallet:")))
        vbox.addLayout(grid)
        self.exec_layout(vbox, _("Multi-Signature Wallet"))
        m = int(m_edit.value())
        n = int(n_edit.value())
        return (m, n)
Beispiel #9
0
class BitcoinWallet(Wallet):
    """
    This class is responsible for handling your wallet of bitcoins.
    """

    def __init__(self, wallet_dir, testnet=False):
        super(BitcoinWallet, self).__init__()

        if testnet:
            bitcoin.set_testnet()
            network.set_testnet()

        self.wallet_dir = wallet_dir
        self.wallet_file = 'tbtc_wallet' if testnet else 'btc_wallet'
        self.min_confirmations = 0
        self.created = False
        self.daemon = None
        keychain_pw = self.get_wallet_password()
        self.wallet_password = keychain_pw if keychain_pw else None  # Convert empty passwords to None
        self.storage = None
        self.wallet = None
        self.testnet = testnet
        self.load_wallet(self.wallet_dir, self.wallet_file)

    def load_wallet(self, wallet_dir, wallet_file):
        self.wallet_dir = wallet_dir
        self.wallet_file = wallet_file

        config = SimpleConfig(options={'cwd': self.wallet_dir, 'wallet_path': self.wallet_file})
        self.storage = WalletStorage(config.get_wallet_path())
        if self.storage.is_encrypted():
            self.storage.decrypt(self.wallet_password)

        if os.path.exists(config.get_wallet_path()):
            self.wallet = ElectrumWallet(self.storage)
            self.created = True
            self.start_daemon()
            self.open_wallet()

    def get_wallet_password(self):
        return keyring.get_password('tribler', 'btc_wallet_password')

    def set_wallet_password(self, password):
        keyring.set_password('tribler', 'btc_wallet_password', password)

    def get_daemon(self):
        """
        Return the daemon that can be used to send JSON RPC commands to. This method is here so we can unit test
        this class.
        """
        from electrum import daemon
        return daemon

    def start_daemon(self):
        options = {'verbose': False, 'cmd': 'daemon', 'testnet': self.testnet, 'oneserver': False, 'segwit': False,
                   'cwd': self.wallet_dir, 'portable': False, 'password': '',
                   'wallet_path': os.path.join('wallet', self.wallet_file)}
        if self.testnet:
            options['server'] = 'electrum.akinbo.org:51002:s'
        config = SimpleConfig(options)
        fd, _ = self.get_daemon().get_fd_or_server(config)

        if not fd:
            return

        self.daemon = self.get_daemon().Daemon(config, fd)
        self.daemon.start()

    def open_wallet(self):
        options = {'password': self.wallet_password, 'subcommand': 'load_wallet', 'verbose': False,
                   'cmd': 'daemon', 'testnet': self.testnet, 'oneserver': False, 'segwit': False,
                   'cwd': self.wallet_dir, 'portable': False, 'wallet_path': self.wallet_file}
        config = SimpleConfig(options)

        server = self.get_daemon().get_server(config)
        if server is not None:
            # Run the command to open the wallet
            server.daemon(options)

    def get_name(self):
        return 'Bitcoin' if not self.testnet else 'Testnet BTC'

    def get_identifier(self):
        return 'BTC'

    def create_wallet(self, password=''):
        """
        Create a new bitcoin wallet.
        """
        self._logger.info("Creating wallet in %s", self.wallet_dir)

        def run_on_thread(thread_method):
            # We are running code that writes to the wallet on a separate thread.
            # This is done because ethereum does not allow writing to a wallet from a daemon thread.
            wallet_thread = Thread(target=thread_method, name="ethereum-create-wallet")
            wallet_thread.setDaemon(False)
            wallet_thread.start()
            wallet_thread.join()

        seed = Mnemonic('en').make_seed()
        k = keystore.from_seed(seed, '')
        k.update_password(None, password)
        self.storage.put('keystore', k.dump())
        self.storage.put('wallet_type', 'standard')
        self.storage.set_password(password, bool(password))
        run_on_thread(self.storage.write)

        self.wallet = ElectrumWallet(self.storage)
        self.wallet.synchronize()
        run_on_thread(self.wallet.storage.write)
        self.created = True

        if password is not None:
            self.set_wallet_password(password)
        self.wallet_password = password

        self.start_daemon()
        self.open_wallet()

        self._logger.info("Bitcoin wallet saved in '%s'", self.wallet.storage.path)

        return succeed(None)

    def get_balance(self):
        """
        Return the balance of the wallet.
        """
        divider = 100000000
        if self.created:
            confirmed, unconfirmed, unmatured = self.wallet.get_balance()
            return succeed({
                "available": float(confirmed) / divider,
                "pending": float(unconfirmed + unmatured) / divider,
                "currency": 'BTC'
            })
        else:
            return succeed({"available": 0, "pending": 0, "currency": 'BTC'})

    def transfer(self, amount, address):
        def on_balance(balance):
            self._logger.info("Creating Bitcoin payment with amount %f to address %s", amount, address)
            if balance['available'] >= amount:
                options = {'tx_fee': '0.0005', 'password': self.wallet_password, 'verbose': False, 'nocheck': False,
                           'cmd': 'payto', 'wallet_path': self.wallet_file, 'destination': address,
                           'cwd': self.wallet_dir, 'testnet': self.testnet, 'rbf': False, 'amount': amount,
                           'segwit': False, 'unsigned': False, 'portable': False}
                config = SimpleConfig(options)

                server = self.get_daemon().get_server(config)
                result = server.run_cmdline(options)
                transaction_hex = result['hex']

                # Broadcast this transaction
                options = {'password': None, 'verbose': False, 'tx': transaction_hex, 'cmd': 'broadcast',
                           'testnet': self.testnet, 'timeout': 30, 'segwit': False, 'cwd': self.wallet_dir,
                           'portable': False}
                config = SimpleConfig(options)

                server = self.get_daemon().get_server(config)
                result = server.run_cmdline(options)

                if not result[0]:  # Transaction failed
                    return fail(RuntimeError(result[1]))

                return succeed(str(result[1]))
            else:
                return fail(InsufficientFunds())

        return self.get_balance().addCallback(on_balance)

    def monitor_transaction(self, txid):
        """
        Monitor a given transaction ID. Returns a Deferred that fires when the transaction is present.
        """
        monitor_deferred = Deferred()

        @inlineCallbacks
        def monitor_loop():
            transactions = yield self.get_transactions()
            for transaction in transactions:
                if transaction['id'] == txid:
                    self._logger.debug("Found transaction with id %s", txid)
                    monitor_deferred.callback(None)
                    monitor_lc.stop()

        self._logger.debug("Start polling for transaction %s", txid)
        monitor_lc = LoopingCall(monitor_loop)
        monitor_lc.start(1)

        return monitor_deferred

    def get_address(self):
        if not self.created:
            return ''
        return str(self.wallet.get_receiving_address())

    def get_transactions(self):
        options = {'nolnet': False, 'password': None, 'verbose': False, 'cmd': 'history',
                   'wallet_path': self.wallet_file, 'testnet': self.testnet, 'segwit': False, 'cwd': self.wallet_dir,
                   'portable': False}
        config = SimpleConfig(options)

        server = self.get_daemon().get_server(config)
        result = server.run_cmdline(options)

        transactions = []
        for transaction in result:
            outgoing = transaction['value'] < 0
            if outgoing:
                from_address = self.get_address()
                to_address = ''
            else:
                from_address = ''
                to_address = self.get_address()

            transactions.append({
                'id': transaction['txid'],
                'outgoing': outgoing,
                'from': from_address,
                'to': to_address,
                'amount': abs(transaction['value']),
                'fee_amount': 0.0,
                'currency': 'BTC',
                'timestamp': str(transaction['timestamp']),
                'description': ''
            })

        return succeed(transactions)

    def min_unit(self):
        return 0.0001  # This is the minimum amount of BTC we can transfer in this market
Beispiel #10
0
class BitcoinWallet(Wallet):
    """
    This class is responsible for handling your wallet of bitcoins.
    """
    TESTNET = False

    def __init__(self, wallet_dir):
        super(BitcoinWallet, self).__init__()

        if self.TESTNET:
            bitcoin.set_testnet()
            network.set_testnet()

        self.wallet_dir = wallet_dir
        self.wallet_file = 'tbtc_wallet' if self.TESTNET else 'btc_wallet'
        self.min_confirmations = 0
        self.daemon = None
        self.wallet_password = None
        self.storage = None
        self.wallet = None

        self.initialize_storage(self.wallet_dir, self.wallet_file)
        if self.created:
            # If the wallet has been created already, we try to unlock it.
            self.unlock_wallet()

    def initialize_storage(self, wallet_dir, wallet_file):
        """
        This will initialize the storage for the BTC wallet.
        """
        self.wallet_dir = wallet_dir
        self.wallet_file = wallet_file

        config = SimpleConfig(options={
            'cwd': self.wallet_dir,
            'wallet_path': self.wallet_file
        })
        self.storage = WalletStorage(config.get_wallet_path())
        if os.path.exists(config.get_wallet_path()):
            self.created = True

    def unlock_wallet(self):
        """
        Attempt to unlock the BTC wallet with the password in the keychain.
        """
        if not self.created or self.unlocked:
            # Wallet has not been created or unlocked already, do nothing.
            return False

        if self.storage.is_encrypted():
            try:
                keychain_pw = self.get_wallet_password()
                self.wallet_password = keychain_pw if keychain_pw else None  # Convert empty passwords to None
                self.storage.decrypt(self.wallet_password)
                self.unlocked = True
            except InvalidPassword:
                self._logger.error(
                    "Invalid BTC wallet password, unable to unlock the wallet!"
                )
            except InitError:
                self._logger.error(
                    "Cannot initialize the keychain, unable to unlock the wallet!"
                )
        else:
            # No need to unlock the wallet
            self.unlocked = True

        if self.unlocked:
            config = SimpleConfig(options={
                'cwd': self.wallet_dir,
                'wallet_path': self.wallet_file
            })
            if os.path.exists(config.get_wallet_path()):
                self.wallet = ElectrumWallet(self.storage)

            self.start_daemon()
            self.open_wallet()
            return True

        return False

    def get_wallet_password(self):
        return keyring.get_password('tribler', 'btc_wallet_password')

    def set_wallet_password(self, password):
        keyring.set_password('tribler', 'btc_wallet_password', password)

    def get_daemon(self):
        """
        Return the daemon that can be used to send JSON RPC commands to. This method is here so we can unit test
        this class.
        """
        from electrum import daemon
        return daemon

    def start_daemon(self):
        options = {
            'verbose': False,
            'cmd': 'daemon',
            'testnet': self.TESTNET,
            'oneserver': False,
            'segwit': False,
            'cwd': self.wallet_dir,
            'portable': False,
            'password': '',
            'wallet_path': os.path.join('wallet', self.wallet_file)
        }
        if self.TESTNET:
            options['server'] = 'electrum.akinbo.org:51002:s'
        config = SimpleConfig(options)
        fd, _ = self.get_daemon().get_fd_or_server(config)

        if not fd:
            return

        self.daemon = self.get_daemon().Daemon(config, fd, is_gui=False)
        self.daemon.start()

    def open_wallet(self):
        options = {
            'password': self.wallet_password,
            'subcommand': 'load_wallet',
            'verbose': False,
            'cmd': 'daemon',
            'testnet': self.TESTNET,
            'oneserver': False,
            'segwit': False,
            'cwd': self.wallet_dir,
            'portable': False,
            'wallet_path': self.wallet_file
        }
        config = SimpleConfig(options)

        server = self.get_daemon().get_server(config)
        if server is not None:
            # Run the command to open the wallet
            server.daemon(options)

    def get_name(self):
        return 'Bitcoin'

    def get_identifier(self):
        return 'BTC'

    def create_wallet(self, password=''):
        """
        Create a new bitcoin wallet.
        """
        self._logger.info("Creating wallet in %s", self.wallet_dir)

        if password is not None:
            try:
                self.set_wallet_password(password)
            except InitError:
                return fail(
                    RuntimeError(
                        "Cannot initialize the keychain, unable to unlock the wallet!"
                    ))
        self.wallet_password = password

        def run_on_thread(thread_method):
            # We are running code that writes to the wallet on a separate thread.
            # This is done because Electrum does not allow writing to a wallet from a daemon thread.
            wallet_thread = Thread(target=thread_method,
                                   name="ethereum-create-wallet")
            wallet_thread.setDaemon(False)
            wallet_thread.start()
            wallet_thread.join()

        seed = Mnemonic('en').make_seed()
        k = keystore.from_seed(seed, '')
        k.update_password(None, password)
        self.storage.put('keystore', k.dump())
        self.storage.put('wallet_type', 'standard')
        self.storage.set_password(password, bool(password))
        run_on_thread(self.storage.write)

        self.wallet = ElectrumWallet(self.storage)
        self.wallet.synchronize()
        run_on_thread(self.wallet.storage.write)
        self.created = True
        self.unlocked = True

        self.start_daemon()
        self.open_wallet()

        self._logger.info("Bitcoin wallet saved in '%s'",
                          self.wallet.storage.path)

        return succeed(None)

    def get_balance(self):
        """
        Return the balance of the wallet.
        """
        if self.created and self.unlocked:
            options = {
                'nolnet': False,
                'password': None,
                'verbose': False,
                'cmd': 'getbalance',
                'wallet_path': self.wallet_file,
                'testnet': self.TESTNET,
                'segwit': False,
                'cwd': self.wallet_dir,
                'portable': False
            }
            config = SimpleConfig(options)

            server = self.get_daemon().get_server(config)
            result = server.run_cmdline(options)

            confirmed = float(result['confirmed'])
            unconfirmed = float(
                result['unconfirmed']) if 'unconfirmed' in result else 0
            unconfirmed += (float(result['unmatured'])
                            if 'unmatured' in result else 0)

            return succeed({
                "available": confirmed,
                "pending": unconfirmed,
                "currency": 'BTC',
                "precision": self.precision()
            })

        return succeed({
            "available": 0,
            "pending": 0,
            "currency": 'BTC',
            "precision": self.precision()
        })

    def transfer(self, amount, address):
        def on_balance(balance):
            self._logger.info(
                "Creating Bitcoin payment with amount %f to address %s",
                amount, address)
            if balance['available'] >= amount:
                options = {
                    'password': self.wallet_password,
                    'verbose': False,
                    'nocheck': False,
                    'cmd': 'payto',
                    'wallet_path': self.wallet_file,
                    'destination': address,
                    'cwd': self.wallet_dir,
                    'testnet': self.TESTNET,
                    'rbf': False,
                    'amount': amount,
                    'segwit': False,
                    'unsigned': False,
                    'portable': False
                }
                config = SimpleConfig(options)

                server = self.get_daemon().get_server(config)
                result = server.run_cmdline(options)
                transaction_hex = result['hex']

                # Broadcast this transaction
                options = {
                    'password': None,
                    'verbose': False,
                    'tx': transaction_hex,
                    'cmd': 'broadcast',
                    'testnet': self.TESTNET,
                    'timeout': 30,
                    'segwit': False,
                    'cwd': self.wallet_dir,
                    'portable': False
                }
                config = SimpleConfig(options)

                server = self.get_daemon().get_server(config)
                result = server.run_cmdline(options)

                if not result[0]:  # Transaction failed
                    return fail(RuntimeError(result[1]))

                return succeed(str(result[1]))
            else:
                return fail(InsufficientFunds())

        return self.get_balance().addCallback(on_balance)

    def monitor_transaction(self, txid):
        """
        Monitor a given transaction ID. Returns a Deferred that fires when the transaction is present.
        """
        monitor_deferred = Deferred()

        @inlineCallbacks
        def monitor_loop():
            transactions = yield self.get_transactions()
            for transaction in transactions:
                if transaction['id'] == txid:
                    self._logger.debug("Found transaction with id %s", txid)
                    monitor_deferred.callback(None)
                    monitor_lc.stop()

        self._logger.debug("Start polling for transaction %s", txid)
        monitor_lc = self.register_task("btc_poll_%s" % txid,
                                        LoopingCall(monitor_loop))
        monitor_lc.start(1)

        return monitor_deferred

    def get_address(self):
        if not self.created or not self.unlocked:
            return ''
        return str(self.wallet.get_receiving_address())

    def get_transactions(self):
        if not self.created or not self.unlocked:
            return succeed([])

        options = {
            'nolnet': False,
            'password': None,
            'verbose': False,
            'cmd': 'history',
            'wallet_path': self.wallet_file,
            'testnet': self.TESTNET,
            'segwit': False,
            'cwd': self.wallet_dir,
            'portable': False
        }
        config = SimpleConfig(options)

        server = self.get_daemon().get_server(config)
        try:
            result = server.run_cmdline(options)
        except ProtocolError:
            self._logger.error("Unable to fetch transactions from BTC wallet!")
            return succeed([])

        transactions = []
        for transaction in result:
            outgoing = transaction['value'] < 0
            from_address = ','.join(transaction['input_addresses'])
            to_address = ','.join(transaction['output_addresses'])

            transactions.append({
                'id':
                transaction['txid'],
                'outgoing':
                outgoing,
                'from':
                from_address,
                'to':
                to_address,
                'amount':
                abs(transaction['value']),
                'fee_amount':
                0.0,
                'currency':
                'BTC',
                'timestamp':
                str(transaction['timestamp']),
                'description':
                'Confirmations: %d' % transaction['confirmations']
            })

        return succeed(transactions)

    def min_unit(self):
        return 100000  # The minimum amount of BTC we can transfer in this market is mBTC (100000 Satoshi)

    def precision(self):
        return 8
Beispiel #11
0
class InstallWizard(QDialog, MessageBoxMixin, BaseWizard):

    accept_signal = pyqtSignal()
    synchronized_signal = pyqtSignal(str)

    def __init__(self, config, app, plugins, storage):
        BaseWizard.__init__(self, config, plugins, storage)
        QDialog.__init__(self, None)
        self.setWindowTitle('Electrum  -  ' + _('Install Wizard'))
        self.app = app
        self.config = config
        # Set for base base class
        self.language_for_seed = config.get('language')
        self.setMinimumSize(600, 400)
        self.accept_signal.connect(self.accept)
        self.title = QLabel()
        self.main_widget = QWidget()
        self.back_button = QPushButton(_("Back"), self)
        self.back_button.setText(_('Back') if self.can_go_back() else _('Cancel'))
        self.next_button = QPushButton(_("Next"), self)
        self.next_button.setDefault(True)
        self.logo = QLabel()
        self.please_wait = QLabel(_("Please wait..."))
        self.please_wait.setAlignment(Qt.AlignCenter)
        self.icon_filename = None
        self.loop = QEventLoop()
        self.rejected.connect(lambda: self.loop.exit(0))
        self.back_button.clicked.connect(lambda: self.loop.exit(1))
        self.next_button.clicked.connect(lambda: self.loop.exit(2))
        outer_vbox = QVBoxLayout(self)
        inner_vbox = QVBoxLayout()
        inner_vbox.addWidget(self.title)
        inner_vbox.addWidget(self.main_widget)
        inner_vbox.addStretch(1)
        inner_vbox.addWidget(self.please_wait)
        inner_vbox.addStretch(1)
        scroll_widget = QWidget()
        scroll_widget.setLayout(inner_vbox)
        scroll = QScrollArea()
        scroll.setWidget(scroll_widget)
        scroll.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        scroll.setWidgetResizable(True)
        icon_vbox = QVBoxLayout()
        icon_vbox.addWidget(self.logo)
        icon_vbox.addStretch(1)
        hbox = QHBoxLayout()
        hbox.addLayout(icon_vbox)
        hbox.addSpacing(5)
        hbox.addWidget(scroll)
        hbox.setStretchFactor(scroll, 1)
        outer_vbox.addLayout(hbox)
        outer_vbox.addLayout(Buttons(self.back_button, self.next_button))
        self.set_icon(':icons/electrum.png')
        self.show()
        self.raise_()
        self.refresh_gui()  # Need for QT on MacOSX.  Lame.

    def run_and_get_wallet(self, get_wallet_from_daemon):

        vbox = QVBoxLayout()
        hbox = QHBoxLayout()
        hbox.addWidget(QLabel(_('Wallet') + ':'))
        self.name_e = QLineEdit()
        hbox.addWidget(self.name_e)
        button = QPushButton(_('Choose...'))
        hbox.addWidget(button)
        vbox.addLayout(hbox)

        self.msg_label = QLabel('')
        vbox.addWidget(self.msg_label)
        hbox2 = QHBoxLayout()
        self.pw_e = QLineEdit('', self)
        self.pw_e.setFixedWidth(150)
        self.pw_e.setEchoMode(2)
        self.pw_label = QLabel(_('Password') + ':')
        hbox2.addWidget(self.pw_label)
        hbox2.addWidget(self.pw_e)
        hbox2.addStretch()
        vbox.addLayout(hbox2)
        self.set_layout(vbox, title=_('Electrum wallet'))

        wallet_folder = os.path.dirname(self.storage.path)

        def on_choose():
            path, __ = QFileDialog.getOpenFileName(self, "Select your wallet file", wallet_folder)
            if path:
                self.name_e.setText(path)

        def on_filename(filename):
            path = os.path.join(wallet_folder, filename)
            wallet_from_memory = get_wallet_from_daemon(path)
            try:
                if wallet_from_memory:
                    self.storage = wallet_from_memory.storage
                else:
                    self.storage = WalletStorage(path, manual_upgrades=True)
                self.next_button.setEnabled(True)
            except BaseException:
                traceback.print_exc(file=sys.stderr)
                self.storage = None
                self.next_button.setEnabled(False)
            if self.storage:
                if not self.storage.file_exists():
                    msg =_("This file does not exist.") + '\n' \
                          + _("Press 'Next' to create this wallet, or choose another file.")
                    pw = False
                elif not wallet_from_memory:
                    if self.storage.is_encrypted_with_user_pw():
                        msg = _("This file is encrypted with a password.") + '\n' \
                              + _('Enter your password or choose another file.')
                        pw = True
                    elif self.storage.is_encrypted_with_hw_device():
                        msg = _("This file is encrypted using a hardware device.") + '\n' \
                              + _("Press 'Next' to choose device to decrypt.")
                        pw = False
                    else:
                        msg = _("Press 'Next' to open this wallet.")
                        pw = False
                else:
                    msg = _("This file is already open in memory.") + "\n" \
                        + _("Press 'Next' to create/focus window.")
                    pw = False
            else:
                msg = _('Cannot read file')
                pw = False
            self.msg_label.setText(msg)
            if pw:
                self.pw_label.show()
                self.pw_e.show()
                self.pw_e.setFocus()
            else:
                self.pw_label.hide()
                self.pw_e.hide()

        button.clicked.connect(on_choose)
        self.name_e.textChanged.connect(on_filename)
        n = os.path.basename(self.storage.path)
        self.name_e.setText(n)

        while True:
            if self.loop.exec_() != 2:  # 2 = next
                return
            if self.storage.file_exists() and not self.storage.is_encrypted():
                break
            if not self.storage.file_exists():
                break
            wallet_from_memory = get_wallet_from_daemon(self.storage.path)
            if wallet_from_memory:
                return wallet_from_memory
            if self.storage.file_exists() and self.storage.is_encrypted():
                if self.storage.is_encrypted_with_user_pw():
                    password = self.pw_e.text()
                    try:
                        self.storage.decrypt(password)
                        break
                    except InvalidPassword as e:
                        QMessageBox.information(None, _('Error'), str(e))
                        continue
                    except BaseException as e:
                        traceback.print_exc(file=sys.stdout)
                        QMessageBox.information(None, _('Error'), str(e))
                        return
                elif self.storage.is_encrypted_with_hw_device():
                    try:
                        self.run('choose_hw_device', HWD_SETUP_DECRYPT_WALLET)
                    except InvalidPassword as e:
                        QMessageBox.information(
                            None, _('Error'),
                            _('Failed to decrypt using this hardware device.') + '\n' +
                            _('If you use a passphrase, make sure it is correct.'))
                        self.stack = []
                        return self.run_and_get_wallet(get_wallet_from_daemon)
                    except BaseException as e:
                        traceback.print_exc(file=sys.stdout)
                        QMessageBox.information(None, _('Error'), str(e))
                        return
                    if self.storage.is_past_initial_decryption():
                        break
                    else:
                        return
                else:
                    raise Exception('Unexpected encryption version')

        path = self.storage.path
        if self.storage.requires_split():
            self.hide()
            msg = _("The wallet '{}' contains multiple accounts, which are no longer supported since Electrum 2.7.\n\n"
                    "Do you want to split your wallet into multiple files?").format(path)
            if not self.question(msg):
                return
            file_list = '\n'.join(self.storage.split_accounts())
            msg = _('Your accounts have been moved to') + ':\n' + file_list + '\n\n'+ _('Do you want to delete the old file') + ':\n' + path
            if self.question(msg):
                os.remove(path)
                self.show_warning(_('The file was removed'))
            return

        action = self.storage.get_action()
        if action and action not in ('new', 'upgrade_storage'):
            self.hide()
            msg = _("The file '{}' contains an incompletely created wallet.\n"
                    "Do you want to complete its creation now?").format(path)
            if not self.question(msg):
                if self.question(_("Do you want to delete '{}'?").format(path)):
                    os.remove(path)
                    self.show_warning(_('The file was removed'))
                return
            self.show()
        if action:
            # self.wallet is set in run
            self.run(action)
            return self.wallet

        self.wallet = Wallet(self.storage)
        return self.wallet

    def finished(self):
        """Called in hardware client wrapper, in order to close popups."""
        return

    def on_error(self, exc_info):
        if not isinstance(exc_info[1], UserCancelled):
            traceback.print_exception(*exc_info)
            self.show_error(str(exc_info[1]))

    def set_icon(self, filename):
        prior_filename, self.icon_filename = self.icon_filename, filename
        self.logo.setPixmap(QPixmap(filename).scaledToWidth(60, mode=Qt.SmoothTransformation))
        return prior_filename

    def set_layout(self, layout, title=None, next_enabled=True):
        self.title.setText("<b>%s</b>"%title if title else "")
        self.title.setVisible(bool(title))
        # Get rid of any prior layout by assigning it to a temporary widget
        prior_layout = self.main_widget.layout()
        if prior_layout:
            QWidget().setLayout(prior_layout)
        self.main_widget.setLayout(layout)
        self.back_button.setEnabled(True)
        self.next_button.setEnabled(next_enabled)
        if next_enabled:
            self.next_button.setFocus()
        self.main_widget.setVisible(True)
        self.please_wait.setVisible(False)

    def exec_layout(self, layout, title=None, raise_on_cancel=True,
                        next_enabled=True):
        self.set_layout(layout, title, next_enabled)
        result = self.loop.exec_()
        if not result and raise_on_cancel:
            raise UserCancelled
        if result == 1:
            raise GoBack from None
        self.title.setVisible(False)
        self.back_button.setEnabled(False)
        self.next_button.setEnabled(False)
        self.main_widget.setVisible(False)
        self.please_wait.setVisible(True)
        self.refresh_gui()
        return result

    def refresh_gui(self):
        # For some reason, to refresh the GUI this needs to be called twice
        self.app.processEvents()
        self.app.processEvents()

    def remove_from_recently_open(self, filename):
        self.config.remove_from_recently_open(filename)

    def text_input(self, title, message, is_valid, allow_multi=False):
        slayout = KeysLayout(parent=self, header_layout=message, is_valid=is_valid,
                             allow_multi=allow_multi)
        self.exec_layout(slayout, title, next_enabled=False)
        return slayout.get_text()

    def seed_input(self, title, message, is_seed, options):
        slayout = SeedLayout(title=message, is_seed=is_seed, options=options, parent=self)
        self.exec_layout(slayout, title, next_enabled=False)
        return slayout.get_seed(), slayout.is_bip39, slayout.is_ext

    @wizard_dialog
    def add_xpub_dialog(self, title, message, is_valid, run_next, allow_multi=False, show_wif_help=False):
        header_layout = QHBoxLayout()
        label = WWLabel(message)
        label.setMinimumWidth(400)
        header_layout.addWidget(label)
        if show_wif_help:
            header_layout.addWidget(InfoButton(WIF_HELP_TEXT), alignment=Qt.AlignRight)
        return self.text_input(title, header_layout, is_valid, allow_multi)

    @wizard_dialog
    def add_cosigner_dialog(self, run_next, index, is_valid):
        title = _("Add Cosigner") + " %d"%index
        message = ' '.join([
            _('Please enter the master public key (xpub) of your cosigner.'),
            _('Enter their master private key (xprv) if you want to be able to sign for them.')
        ])
        return self.text_input(title, message, is_valid)

    @wizard_dialog
    def restore_seed_dialog(self, run_next, test):
        options = []
        if self.opt_ext:
            options.append('ext')
        if self.opt_bip39:
            options.append('bip39')
        title = _('Enter Seed')
        message = _('Please enter your seed phrase in order to restore your wallet.')
        return self.seed_input(title, message, test, options)

    @wizard_dialog
    def confirm_seed_dialog(self, run_next, test):
        self.app.clipboard().clear()
        title = _('Confirm Seed')
        message = ' '.join([
            _('Your seed is important!'),
            _('If you lose your seed, your money will be permanently lost.'),
            _('To make sure that you have properly saved your seed, please retype it here.')
        ])
        seed, is_bip39, is_ext = self.seed_input(title, message, test, None)
        return seed

    @wizard_dialog
    def show_seed_dialog(self, run_next, seed_text):
        title =  _("Your wallet generation seed is:")
        slayout = SeedLayout(seed=seed_text, title=title, msg=True, options=['ext'])
        self.exec_layout(slayout)
        return slayout.is_ext

    def pw_layout(self, msg, kind, force_disable_encrypt_cb):
        playout = PasswordLayout(None, msg, kind, self.next_button,
                                 force_disable_encrypt_cb=force_disable_encrypt_cb)
        playout.encrypt_cb.setChecked(True)
        self.exec_layout(playout.layout())
        return playout.new_password(), playout.encrypt_cb.isChecked()

    @wizard_dialog
    def request_password(self, run_next, force_disable_encrypt_cb=False):
        """Request the user enter a new password and confirm it.  Return
        the password or None for no password."""
        return self.pw_layout(MSG_ENTER_PASSWORD, PW_NEW, force_disable_encrypt_cb)

    @wizard_dialog
    def request_storage_encryption(self, run_next):
        playout = PasswordLayoutForHW(None, MSG_HW_STORAGE_ENCRYPTION, PW_NEW, self.next_button)
        playout.encrypt_cb.setChecked(True)
        self.exec_layout(playout.layout())
        return playout.encrypt_cb.isChecked()

    def show_restore(self, wallet, network):
        # FIXME: these messages are shown after the install wizard is
        # finished and the window closed.  On macOS they appear parented
        # with a re-appeared ghost install wizard window...
        if network:
            def task():
                wallet.wait_until_synchronized()
                if wallet.is_found():
                    msg = _("Recovery successful")
                else:
                    msg = _("No transactions found for this seed")
                self.synchronized_signal.emit(msg)
            self.synchronized_signal.connect(self.show_message)
            t = threading.Thread(target = task)
            t.daemon = True
            t.start()
        else:
            msg = _("This wallet was restored offline. It may "
                    "contain more addresses than displayed.")
            self.show_message(msg)

    @wizard_dialog
    def confirm_dialog(self, title, message, run_next):
        self.confirm(message, title)

    def confirm(self, message, title):
        label = WWLabel(message)
        vbox = QVBoxLayout()
        vbox.addWidget(label)
        self.exec_layout(vbox, title)

    @wizard_dialog
    def action_dialog(self, action, run_next):
        self.run(action)

    def terminate(self):
        self.accept_signal.emit()

    def waiting_dialog(self, task, msg, on_finished=None):
        label = WWLabel(msg)
        vbox = QVBoxLayout()
        vbox.addSpacing(100)
        label.setMinimumWidth(300)
        label.setAlignment(Qt.AlignCenter)
        vbox.addWidget(label)
        self.set_layout(vbox, next_enabled=False)
        self.back_button.setEnabled(False)

        t = threading.Thread(target=task)
        t.start()
        while True:
            t.join(1.0/60)
            if t.is_alive():
                self.refresh_gui()
            else:
                break
        if on_finished:
            on_finished()

    @wizard_dialog
    def choice_dialog(self, title, message, choices, run_next):
        c_values = [x[0] for x in choices]
        c_titles = [x[1] for x in choices]
        clayout = ChoicesLayout(message, c_titles)
        vbox = QVBoxLayout()
        vbox.addLayout(clayout.layout())
        self.exec_layout(vbox, title)
        action = c_values[clayout.selected_index()]
        return action

    def query_choice(self, msg, choices):
        """called by hardware wallets"""
        clayout = ChoicesLayout(msg, choices)
        vbox = QVBoxLayout()
        vbox.addLayout(clayout.layout())
        self.exec_layout(vbox, '')
        return clayout.selected_index()

    @wizard_dialog
    def line_dialog(self, run_next, title, message, default, test, warning='',
                    presets=()):
        vbox = QVBoxLayout()
        vbox.addWidget(WWLabel(message))
        line = QLineEdit()
        line.setText(default)
        def f(text):
            self.next_button.setEnabled(test(text))
        line.textEdited.connect(f)
        vbox.addWidget(line)
        vbox.addWidget(WWLabel(warning))

        for preset in presets:
            button = QPushButton(preset[0])
            button.clicked.connect(lambda __, text=preset[1]: line.setText(text))
            button.setMaximumWidth(150)
            hbox = QHBoxLayout()
            hbox.addWidget(button, Qt.AlignCenter)
            vbox.addLayout(hbox)

        self.exec_layout(vbox, title, next_enabled=test(default))
        return ' '.join(line.text().split())

    @wizard_dialog
    def show_xpub_dialog(self, xpub, run_next):
        msg = ' '.join([
            _("Here is your master public key."),
            _("Please share it with your cosigners.")
        ])
        vbox = QVBoxLayout()
        layout = SeedLayout(xpub, title=msg, icon=False, for_seed_words=False)
        vbox.addLayout(layout.layout())
        self.exec_layout(vbox, _('Master Public Key'))
        return None

    def init_network(self, network):
        message = _("Electrum communicates with remote servers to get "
                  "information about your transactions and addresses. The "
                  "servers all fulfill the same purpose only differing in "
                  "hardware. In most cases you simply want to let Electrum "
                  "pick one at random.  However if you prefer feel free to "
                  "select a server manually.")
        choices = [_("Auto connect"), _("Select server manually")]
        title = _("How do you want to connect to a server? ")
        clayout = ChoicesLayout(message, choices)
        self.back_button.setText(_('Cancel'))
        self.exec_layout(clayout.layout(), title)
        r = clayout.selected_index()
        if r == 1:
            nlayout = NetworkChoiceLayout(network, self.config, wizard=True)
            if self.exec_layout(nlayout.layout()):
                nlayout.accept()
        else:
            network.auto_connect = True
            self.config.set_key('auto_connect', True, True)

    @wizard_dialog
    def multisig_dialog(self, run_next):
        cw = CosignWidget(2, 2)
        m_edit = QSlider(Qt.Horizontal, self)
        n_edit = QSlider(Qt.Horizontal, self)
        n_edit.setMinimum(2)
        n_edit.setMaximum(15)
        m_edit.setMinimum(1)
        m_edit.setMaximum(2)
        n_edit.setValue(2)
        m_edit.setValue(2)
        n_label = QLabel()
        m_label = QLabel()
        grid = QGridLayout()
        grid.addWidget(n_label, 0, 0)
        grid.addWidget(n_edit, 0, 1)
        grid.addWidget(m_label, 1, 0)
        grid.addWidget(m_edit, 1, 1)
        def on_m(m):
            m_label.setText(_('Require {0} signatures').format(m))
            cw.set_m(m)
        def on_n(n):
            n_label.setText(_('From {0} cosigners').format(n))
            cw.set_n(n)
            m_edit.setMaximum(n)
        n_edit.valueChanged.connect(on_n)
        m_edit.valueChanged.connect(on_m)
        on_n(2)
        on_m(2)
        vbox = QVBoxLayout()
        vbox.addWidget(cw)
        vbox.addWidget(WWLabel(_("Choose the number of signatures needed to unlock funds in your wallet:")))
        vbox.addLayout(grid)
        self.exec_layout(vbox, _("Multi-Signature Wallet"))
        m = int(m_edit.value())
        n = int(n_edit.value())
        return (m, n)