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# -*- coding: utf-8 -*-
"""
OnionShare | https://onionshare.org/
Copyright (C) 2014-2020 Micah Lee, et al. <micah@micahflee.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
import time
from PySide2 import QtCore, QtWidgets, QtGui
from onionshare_cli.onion import (
BundledTorCanceled,
TorErrorInvalidSetting,
TorErrorAutomatic,
TorErrorSocketPort,
TorErrorSocketFile,
TorErrorMissingPassword,
TorErrorUnreadableCookieFile,
TorErrorAuthError,
TorErrorProtocolError,
BundledTorTimeout,
BundledTorBroken,
TorTooOldEphemeral,
TorTooOldStealth,
PortNotAvailable,
)
from . import strings
from .gui_common import GuiCommon
from .widgets import Alert
class TorConnectionDialog(QtWidgets.QProgressDialog):
"""
Connecting to Tor dialog.
"""
open_settings = QtCore.Signal()
def __init__(self, common, custom_settings=False):
super(TorConnectionDialog, self).__init__(None)
self.common = common
if custom_settings:
self.settings = custom_settings
else:
self.settings = self.common.settings
self.common.log("TorConnectionDialog", "__init__")
self.setWindowTitle("OnionShare")
self.setWindowIcon(QtGui.QIcon(GuiCommon.get_resource_path("images/logo.png")))
self.setModal(True)
self.setFixedSize(400, 150)
# Label
self.setLabelText(strings._("connecting_to_tor"))
# Progress bar ticks from 0 to 100
self.setRange(0, 100)
# Don't show if connection takes less than 100ms (for non-bundled tor)
self.setMinimumDuration(100)
# Start displaying the status at 0
self._tor_status_update(0, "")
def start(self):
self.common.log("TorConnectionDialog", "start")
t = TorConnectionThread(self.common, self.settings, self)
t.tor_status_update.connect(self._tor_status_update)
t.connected_to_tor.connect(self._connected_to_tor)
t.canceled_connecting_to_tor.connect(self._canceled_connecting_to_tor)
t.error_connecting_to_tor.connect(self._error_connecting_to_tor)
t.start()
# The main thread needs to remain active, and checking for Qt events,
# until the thread is finished. Otherwise it won't be able to handle
# accepting signals.
self.active = True
while self.active:
time.sleep(0.1)
self.common.gui.qtapp.processEvents()
def _tor_status_update(self, progress, summary):
self.setValue(int(progress))
self.setLabelText(
f"<strong>{strings._('connecting_to_tor')}</strong><br>{summary}"
)
def _connected_to_tor(self):
self.common.log("TorConnectionDialog", "_connected_to_tor")
self.active = False
# Close the dialog after connecting
self.setValue(self.maximum())
def _canceled_connecting_to_tor(self):
self.common.log("TorConnectionDialog", "_canceled_connecting_to_tor")
self.active = False
self.common.gui.onion.cleanup()
# Cancel connecting to Tor
QtCore.QTimer.singleShot(1, self.cancel)
def _error_connecting_to_tor(self, msg):
self.common.log("TorConnectionDialog", "_error_connecting_to_tor")
self.active = False
def alert_and_open_settings():
# Display the exception in an alert box
Alert(
self.common,
f"{msg}\n\n{strings._('gui_tor_connection_error_settings')}",
QtWidgets.QMessageBox.Warning,
)
# Open settings
self.open_settings.emit()
QtCore.QTimer.singleShot(1, alert_and_open_settings)
# Cancel connecting to Tor
QtCore.QTimer.singleShot(1, self.cancel)
class TorConnectionThread(QtCore.QThread):
tor_status_update = QtCore.Signal(str, str)
connected_to_tor = QtCore.Signal()
canceled_connecting_to_tor = QtCore.Signal()
error_connecting_to_tor = QtCore.Signal(str)
def __init__(self, common, settings, dialog):
super(TorConnectionThread, self).__init__()
self.common = common
self.common.log("TorConnectionThread", "__init__")
self.settings = settings
self.dialog = dialog
def run(self):
self.common.log("TorConnectionThread", "run")
# Connect to the Onion
try:
self.common.gui.onion.connect(self.settings, False, self._tor_status_update)
if self.common.gui.onion.connected_to_tor:
self.connected_to_tor.emit()
else:
self.canceled_connecting_to_tor.emit()
except BundledTorCanceled as e:
self.common.log(
"TorConnectionThread", "run", "caught exception: BundledTorCanceled"
)
self.canceled_connecting_to_tor.emit()
except (
TorErrorInvalidSetting,
TorErrorAutomatic,
TorErrorSocketPort,
TorErrorSocketFile,
TorErrorMissingPassword,
TorErrorUnreadableCookieFile,
TorErrorAuthError,
TorErrorProtocolError,
BundledTorTimeout,
BundledTorBroken,
TorTooOldEphemeral,
TorTooOldStealth,
PortNotAvailable,
) as e:
message = self.common.gui.get_translated_tor_error(e)
self.common.log(
"TorConnectionThread", "run", f"caught exception: {message}"
)
self.error_connecting_to_tor.emit(message)
def _tor_status_update(self, progress, summary):
self.tor_status_update.emit(progress, summary)
# Return False if the dialog was canceled
return not self.dialog.wasCanceled()
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