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287 lines
12 KiB
287 lines
12 KiB
#!/usr/bin/env python3
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# -*- mode: python -*-
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#
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# Electrum - lightweight Bitcoin client
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# Copyright (C) 2016 The Electrum developers
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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import threading
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from functools import partial
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from typing import TYPE_CHECKING, Union, Optional, Callable, Any
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from PyQt5.QtCore import QObject, pyqtSignal
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from PyQt5.QtWidgets import QVBoxLayout, QLineEdit, QHBoxLayout, QLabel
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from electrum.gui.qt.password_dialog import PasswordLayout, PW_PASSPHRASE
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from electrum.gui.qt.util import (read_QIcon, WWLabel, OkButton, WindowModalDialog,
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Buttons, CancelButton, TaskThread, char_width_in_lineedit,
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PasswordLineEdit)
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from electrum.gui.qt.main_window import StatusBarButton, ElectrumWindow
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from electrum.gui.qt.installwizard import InstallWizard
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from electrum.i18n import _
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from electrum.logging import Logger
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from electrum.util import parse_URI, InvalidBitcoinURI, UserCancelled, UserFacingException
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from electrum.plugin import hook, DeviceUnpairableError
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from .plugin import OutdatedHwFirmwareException, HW_PluginBase, HardwareHandlerBase
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if TYPE_CHECKING:
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from electrum.wallet import Abstract_Wallet
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from electrum.keystore import Hardware_KeyStore
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# The trickiest thing about this handler was getting windows properly
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# parented on macOS.
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class QtHandlerBase(HardwareHandlerBase, QObject, Logger):
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'''An interface between the GUI (here, QT) and the device handling
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logic for handling I/O.'''
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passphrase_signal = pyqtSignal(object, object)
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message_signal = pyqtSignal(object, object)
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error_signal = pyqtSignal(object, object)
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word_signal = pyqtSignal(object)
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clear_signal = pyqtSignal()
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query_signal = pyqtSignal(object, object)
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yes_no_signal = pyqtSignal(object)
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status_signal = pyqtSignal(object)
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def __init__(self, win: Union[ElectrumWindow, InstallWizard], device: str):
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QObject.__init__(self)
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Logger.__init__(self)
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assert win.gui_thread == threading.current_thread(), 'must be called from GUI thread'
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self.clear_signal.connect(self.clear_dialog)
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self.error_signal.connect(self.error_dialog)
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self.message_signal.connect(self.message_dialog)
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self.passphrase_signal.connect(self.passphrase_dialog)
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self.word_signal.connect(self.word_dialog)
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self.query_signal.connect(self.win_query_choice)
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self.yes_no_signal.connect(self.win_yes_no_question)
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self.status_signal.connect(self._update_status)
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self.win = win
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self.device = device
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self.dialog = None
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self.done = threading.Event()
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def top_level_window(self):
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return self.win.top_level_window()
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def update_status(self, paired):
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self.status_signal.emit(paired)
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def _update_status(self, paired):
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if hasattr(self, 'button'):
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button = self.button
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icon_name = button.icon_paired if paired else button.icon_unpaired
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button.setIcon(read_QIcon(icon_name))
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def query_choice(self, msg, labels):
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self.done.clear()
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self.query_signal.emit(msg, labels)
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self.done.wait()
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return self.choice
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def yes_no_question(self, msg):
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self.done.clear()
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self.yes_no_signal.emit(msg)
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self.done.wait()
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return self.ok
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def show_message(self, msg, on_cancel=None):
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self.message_signal.emit(msg, on_cancel)
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def show_error(self, msg, blocking=False):
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self.done.clear()
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self.error_signal.emit(msg, blocking)
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if blocking:
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self.done.wait()
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def finished(self):
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self.clear_signal.emit()
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def get_word(self, msg):
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self.done.clear()
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self.word_signal.emit(msg)
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self.done.wait()
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return self.word
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def get_passphrase(self, msg, confirm):
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self.done.clear()
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self.passphrase_signal.emit(msg, confirm)
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self.done.wait()
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return self.passphrase
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def passphrase_dialog(self, msg, confirm):
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# If confirm is true, require the user to enter the passphrase twice
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parent = self.top_level_window()
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d = WindowModalDialog(parent, _("Enter Passphrase"))
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if confirm:
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OK_button = OkButton(d)
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playout = PasswordLayout(msg=msg, kind=PW_PASSPHRASE, OK_button=OK_button)
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vbox = QVBoxLayout()
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vbox.addLayout(playout.layout())
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vbox.addLayout(Buttons(CancelButton(d), OK_button))
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d.setLayout(vbox)
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passphrase = playout.new_password() if d.exec_() else None
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else:
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pw = PasswordLineEdit()
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pw.setMinimumWidth(200)
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vbox = QVBoxLayout()
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vbox.addWidget(WWLabel(msg))
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vbox.addWidget(pw)
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vbox.addLayout(Buttons(CancelButton(d), OkButton(d)))
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d.setLayout(vbox)
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passphrase = pw.text() if d.exec_() else None
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self.passphrase = passphrase
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self.done.set()
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def word_dialog(self, msg):
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dialog = WindowModalDialog(self.top_level_window(), "")
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hbox = QHBoxLayout(dialog)
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hbox.addWidget(QLabel(msg))
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text = QLineEdit()
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text.setMaximumWidth(12 * char_width_in_lineedit())
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text.returnPressed.connect(dialog.accept)
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hbox.addWidget(text)
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hbox.addStretch(1)
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dialog.exec_() # Firmware cannot handle cancellation
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self.word = text.text()
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self.done.set()
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def message_dialog(self, msg, on_cancel):
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# Called more than once during signing, to confirm output and fee
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self.clear_dialog()
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title = _('Please check your {} device').format(self.device)
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self.dialog = dialog = WindowModalDialog(self.top_level_window(), title)
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l = QLabel(msg)
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vbox = QVBoxLayout(dialog)
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vbox.addWidget(l)
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if on_cancel:
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dialog.rejected.connect(on_cancel)
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vbox.addLayout(Buttons(CancelButton(dialog)))
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dialog.show()
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def error_dialog(self, msg, blocking):
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self.win.show_error(msg, parent=self.top_level_window())
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if blocking:
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self.done.set()
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def clear_dialog(self):
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if self.dialog:
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self.dialog.accept()
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self.dialog = None
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def win_query_choice(self, msg, labels):
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try:
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self.choice = self.win.query_choice(msg, labels)
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except UserCancelled:
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self.choice = None
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self.done.set()
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def win_yes_no_question(self, msg):
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self.ok = self.win.question(msg)
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self.done.set()
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class QtPluginBase(object):
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@hook
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def load_wallet(self: Union['QtPluginBase', HW_PluginBase], wallet: 'Abstract_Wallet', window: ElectrumWindow):
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for keystore in wallet.get_keystores():
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if not isinstance(keystore, self.keystore_class):
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continue
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if not self.libraries_available:
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message = keystore.plugin.get_library_not_available_message()
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window.show_error(message)
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return
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tooltip = self.device + '\n' + (keystore.label or 'unnamed')
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cb = partial(self._on_status_bar_button_click, window=window, keystore=keystore)
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button = StatusBarButton(read_QIcon(self.icon_unpaired), tooltip, cb)
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button.icon_paired = self.icon_paired
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button.icon_unpaired = self.icon_unpaired
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window.statusBar().addPermanentWidget(button)
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handler = self.create_handler(window)
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handler.button = button
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keystore.handler = handler
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keystore.thread = TaskThread(window, on_error=partial(self.on_task_thread_error, window, keystore))
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self.add_show_address_on_hw_device_button_for_receive_addr(wallet, keystore, window)
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# Trigger a pairing
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keystore.thread.add(partial(self.get_client, keystore))
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def _on_status_bar_button_click(self, *, window: ElectrumWindow, keystore: 'Hardware_KeyStore'):
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try:
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self.show_settings_dialog(window=window, keystore=keystore)
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except (UserFacingException, UserCancelled) as e:
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exc_info = (type(e), e, e.__traceback__)
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self.on_task_thread_error(window=window, keystore=keystore, exc_info=exc_info)
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def on_task_thread_error(self: Union['QtPluginBase', HW_PluginBase], window: ElectrumWindow,
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keystore: 'Hardware_KeyStore', exc_info):
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e = exc_info[1]
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if isinstance(e, OutdatedHwFirmwareException):
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if window.question(e.text_ignore_old_fw_and_continue(), title=_("Outdated device firmware")):
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self.set_ignore_outdated_fw()
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# will need to re-pair
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devmgr = self.device_manager()
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def re_pair_device():
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device_id = self.choose_device(window, keystore)
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devmgr.unpair_id(device_id)
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self.get_client(keystore)
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keystore.thread.add(re_pair_device)
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return
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else:
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window.on_error(exc_info)
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def choose_device(self: Union['QtPluginBase', HW_PluginBase], window: ElectrumWindow,
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keystore: 'Hardware_KeyStore') -> Optional[str]:
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'''This dialog box should be usable even if the user has
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forgotten their PIN or it is in bootloader mode.'''
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assert window.gui_thread != threading.current_thread(), 'must not be called from GUI thread'
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device_id = self.device_manager().xpub_id(keystore.xpub)
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if not device_id:
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try:
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info = self.device_manager().select_device(self, keystore.handler, keystore)
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except UserCancelled:
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return
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device_id = info.device.id_
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return device_id
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def show_settings_dialog(self, window: ElectrumWindow, keystore: 'Hardware_KeyStore') -> None:
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# default implementation (if no dialog): just try to connect to device
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def connect():
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device_id = self.choose_device(window, keystore)
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keystore.thread.add(connect)
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def add_show_address_on_hw_device_button_for_receive_addr(self, wallet: 'Abstract_Wallet',
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keystore: 'Hardware_KeyStore',
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main_window: ElectrumWindow):
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plugin = keystore.plugin
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receive_address_e = main_window.receive_address_e
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def show_address():
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addr = str(receive_address_e.text())
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keystore.thread.add(partial(plugin.show_address, wallet, addr, keystore))
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dev_name = f"{plugin.device} ({keystore.label})"
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receive_address_e.addButton("eye1.png", show_address, _("Show on {}").format(dev_name))
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def create_handler(self, window: Union[ElectrumWindow, InstallWizard]) -> 'QtHandlerBase':
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raise NotImplementedError()
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