# # The Qubes OS Project, https://www.qubes-os.org # # Copyright (C) 2012 Agnieszka Kostrzewa # Copyright (C) 2012 Marek Marczykowski-Górecki # # Copyright (C) 2017 Wojtek Porczyk # # 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 2 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 . # import itertools import os import re import qubesadmin import traceback import asyncio from contextlib import suppress import sys import quamash from qubesadmin import events from PyQt5 import QtWidgets, QtCore, QtGui # pylint: disable=import-error #TODO: remove def _filter_internal(vm): return (not vm.klass == 'AdminVM' and not vm.features.get('internal', False)) def is_internal(vm): return (vm.klass == 'AdminVM' or vm.features.get('internal', False)) def translate(string): return QtCore.QCoreApplication.translate( "ManagerUtils", string) class SizeSpinBox(QtWidgets.QSpinBox): # pylint: disable=invalid-name, no-self-use def __init__(self, *args, **kwargs): super(SizeSpinBox, self).__init__(*args, **kwargs) self.pattern = r'(\d+\.?\d?) ?(GB|MB)' self.regex = re.compile(self.pattern) self.validator = QtGui.QRegExpValidator(QtCore.QRegExp( self.pattern), self) def textFromValue(self, v: int) -> str: if v > 1024: return '{:.1f} GB'.format(v / 1024) return '{} MB'.format(v) def validate(self, text: str, pos: int): return self.validator.validate(text, pos) def valueFromText(self, text: str) -> int: value, unit = self.regex.fullmatch(text.strip()).groups() if unit == 'GB': multiplier = 1024 else: multiplier = 1 return int(float(value) * multiplier) def get_boolean_feature(vm, feature_name): result = vm.features.get(feature_name, None) if result is not None: result = bool(result) return result # TODO: doublecheck translation def did_widget_selection_change(widget): return not translate(" (current)") in widget.currentText() def initialize_widget(widget, choices, selected_value=None, icon_getter=None): """ populates widget (ListBox or ComboBox) with items. Previous widget contents are erased. :param widget: widget to populate :param choices: list of tuples (text, value) to use to populate widget :param selected_value: value to populate widget with :param icon_getter: function of value that returns desired icon :return: """ widget.clear() selected_item = None for (name, value) in choices: if value == selected_value: selected_item = name if icon_getter is not None: widget.addItem(icon_getter(value), name, userData=value) else: widget.addItem(name, userData=value) if selected_item is not None: widget.setCurrentIndex(widget.findText(selected_item)) else: widget.addItem(str(selected_value), selected_value) widget.setCurrentIndex(widget.findText(str(selected_value))) widget.setItemText(widget.currentIndex(), widget.currentText() + translate(" (current)")) def initialize_widget_for_property( widget, choices, holder, property_name, allow_default=False, icon_getter=None): # potentially add default if allow_default: default_property = holder.property_get_default(property_name) if default_property is None: default_property = "none" choices.append( (translate("default ({})").format(default_property), qubesadmin.DEFAULT)) # calculate current (can be default) if holder.property_is_default(property_name): current_value = qubesadmin.DEFAULT else: current_value = getattr(holder, property_name) initialize_widget(widget, choices, selected_value=current_value, icon_getter=icon_getter) # TODO: add use icons here def initialize_widget_with_vms(widget, qubes_app, filter_function=(lambda x: True), allow_none=False, holder=None, property_name=None, allow_default=False, allow_internal=False): choices = [] for vm in qubes_app.domains: if not allow_internal and is_internal(vm): continue if not filter_function(vm): continue choices.append((vm.name, vm)) if allow_none: choices.append((translate("(none)"), None)) initialize_widget_for_property( widget=widget, choices=choices, holder=holder, property_name=property_name, allow_default=allow_default) def initialize_widget_with_kernels(widget, qubes_app, allow_none=False, holder=None, property_name=None, allow_default=False ): kernels = [kernel.vid for kernel in qubes_app.pools['linux-kernel'].volumes] kernels = sorted(kernels, key=KernelVersion) choices = [(kernel, kernel) for kernel in kernels] if allow_none: choices.append((translate("(none)"), None)) initialize_widget_for_property( widget=widget, choices=choices, holder=holder, property_name=property_name, allow_default=allow_default) def initialize_widget_with_labels(widget, qubes_app, holder=None, property_name='label'): labels = sorted(qubes_app.labels.values(), key=lambda l: l.index) choices = [(label.name, label) for label in labels] initialize_widget_for_property( widget=widget, choices=choices, holder=holder, property_name=property_name, icon_getter=(lambda label: QtGui.QIcon.fromTheme(label.icon))) def prepare_choice(widget, holder, propname, choice, default, filter_function=None, *, icon_getter=None, allow_internal=None, allow_default=False, allow_none=False, transform=None): # for newly created vms, set propname to None # clear the widget, so that prepare_choice functions can be used # to refresh widget values while widget.count() > 0: widget.removeItem(0) debug( 'prepare_choice(widget={widget!r}, ' 'holder={holder!r}, ' 'propname={propname!r}, ' 'choice={choice!r}, ' 'default={default!r}, ' 'filter_function={filter_function!r}, ' 'icon_getter={icon_getter!r}, ' 'allow_internal={allow_internal!r}, ' 'allow_default={allow_default!r}, ' 'allow_none={allow_none!r})'.format(**locals())) if propname is not None and allow_default: default = holder.property_get_default(propname) if allow_internal is None: allow_internal = propname is None or not propname.endswith('vm') if propname is not None: if holder.property_is_default(propname): oldvalue = qubesadmin.DEFAULT else: oldvalue = getattr(holder, propname) if oldvalue == '': oldvalue = None if transform is not None and oldvalue is not None: oldvalue = transform(oldvalue) else: oldvalue = object() # won't match for identity idx = 0 choice_list = list(choice)[:] if not allow_internal: choice_list = filter(_filter_internal, choice_list) if filter_function is not None: choice_list = filter(filter_function, choice_list) choice_list = list(choice_list) if allow_default: choice_list.insert(0, qubesadmin.DEFAULT) if allow_none: choice_list.append(None) for i, item in enumerate(choice_list): debug('i={} item={}'.format(i, item)) # 0: default (unset) if item is qubesadmin.DEFAULT: default_string = str(default) if default is not None else 'none' if transform is not None: default_string = transform(default_string) text = QtCore.QCoreApplication.translate( "ManagerUtils", 'default ({})').format(default_string) # N+1: explicit None elif item is None: text = QtCore.QCoreApplication.translate("ManagerUtils", '(none)') # 1..N: choices else: text = str(item) if transform is not None: text = transform(text) if item == oldvalue: text += QtCore.QCoreApplication.translate( "ManagerUtils", ' (current)') idx = i widget.insertItem(i, text) if icon_getter is not None: icon = icon_getter(item) if icon is not None: widget.setItemIcon(i, icon) widget.setCurrentIndex(idx) return choice_list, idx class KernelVersion: # pylint: disable=too-few-public-methods # Cannot use distutils.version.LooseVersion, because it fails at handling # versions that have no numbers in them def __init__(self, string): self.string = string self.groups = re.compile(r'(\d+)').split(self.string) def __lt__(self, other): for (self_content, other_content) in itertools.zip_longest( self.groups, other.groups): if self_content == other_content: continue if self_content is None: return True if other_content is None: return False if self_content.isdigit() and other_content.isdigit(): return int(self_content) < int(other_content) return self_content < other_content def prepare_kernel_choice(widget, holder, propname, default, *args, **kwargs): try: app = holder.app except AttributeError: app = holder kernels = [kernel.vid for kernel in app.pools['linux-kernel'].volumes] kernels = sorted(kernels, key=KernelVersion) return prepare_choice( widget, holder, propname, kernels, default, *args, **kwargs) def prepare_label_choice(widget, holder, propname, default, *args, **kwargs): try: app = holder.app except AttributeError: app = holder return prepare_choice(widget, holder, propname, sorted(app.labels.values(), key=lambda l: l.index), default, *args, icon_getter=(lambda label: QtGui.QIcon.fromTheme(label.icon)), **kwargs) def prepare_vm_choice(widget, holder, propname, default, *args, **kwargs): try: app = holder.app except AttributeError: app = holder return prepare_choice(widget, holder, propname, app.domains, default, *args, **kwargs) def is_debug(): return os.getenv('QUBES_MANAGER_DEBUG', '') not in ('', '0') def debug(*args, **kwargs): if not is_debug(): return print(*args, **kwargs) def get_path_from_vm(vm, service_name): """ Displays a file/directory selection window for the given VM. :param vm: vm from which to select path :param service_name: qubes.SelectFile or qubes.SelectDirectory :return: path to file, checked for validity """ path_re = re.compile(r"[a-zA-Z0-9/:.,_+=() -]*") path_max_len = 512 if not vm: return None stdout, _stderr = vm.run_service_for_stdio(service_name) stdout = stdout.strip() untrusted_path = stdout.decode(encoding='ascii')[:path_max_len] if not untrusted_path: return None if path_re.fullmatch(untrusted_path): assert '../' not in untrusted_path assert '\0' not in untrusted_path return untrusted_path.strip() raise ValueError(QtCore.QCoreApplication.translate( "ManagerUtils", 'Unexpected characters in path.')) def format_dependencies_list(dependencies): """Given a list of tuples representing properties, formats them in a readable list.""" list_text = "" for (holder, prop) in dependencies: if holder is None: list_text += QtCore.QCoreApplication.translate( "ManagerUtils", "- Global property {}
").format(prop) else: list_text += QtCore.QCoreApplication.translate( "ManagerUtils", "- {0} for qube {1}
").format( prop, holder.name) return list_text def loop_shutdown(): pending = asyncio.Task.all_tasks() for task in pending: with suppress(asyncio.CancelledError): task.cancel() # Bases on the original code by: # Copyright (c) 2002-2007 Pascal Varet def handle_exception(exc_type, exc_value, exc_traceback): filename, line, _, _ = traceback.extract_tb(exc_traceback).pop() filename = os.path.basename(filename) error = "%s: %s" % (exc_type.__name__, exc_value) strace = "" stacktrace = traceback.extract_tb(exc_traceback) while stacktrace: (filename, line, func, txt) = stacktrace.pop() strace += "----\n" strace += "line: %s\n" % txt strace += "func: %s\n" % func strace += "line no.: %d\n" % line strace += "file: %s\n" % filename msg_box = QtWidgets.QMessageBox() msg_box.setDetailedText(strace) msg_box.setIcon(QtWidgets.QMessageBox.Critical) msg_box.setWindowTitle(QtCore.QCoreApplication.translate( "ManagerUtils", "Houston, we have a problem...")) msg_box.setText(QtCore.QCoreApplication.translate( "ManagerUtils", "Whoops. A critical error has occured. " "This is most likely a bug in Qubes Manager.

" "{0}
at line {1}
of file " "{2}.

").format(error, line, filename)) msg_box.exec_() def run_asynchronous(window_class): qt_app = QtWidgets.QApplication(sys.argv) translator = QtCore.QTranslator(qt_app) locale = QtCore.QLocale.system().name() i18n_dir = os.path.join( os.path.dirname(os.path.realpath(__file__)), 'i18n') translator.load("qubesmanager_{!s}.qm".format(locale), i18n_dir) qt_app.installTranslator(translator) QtCore.QCoreApplication.installTranslator(translator) qt_app.setOrganizationName("The Qubes Project") qt_app.setOrganizationDomain("http://qubes-os.org") qt_app.lastWindowClosed.connect(loop_shutdown) qubes_app = qubesadmin.Qubes() loop = quamash.QEventLoop(qt_app) asyncio.set_event_loop(loop) dispatcher = events.EventsDispatcher(qubes_app) window = window_class(qt_app, qubes_app, dispatcher) if hasattr(window, "setup_application"): window.setup_application() window.show() try: loop.run_until_complete( asyncio.ensure_future(dispatcher.listen_for_events())) except asyncio.CancelledError: pass except Exception: # pylint: disable=broad-except loop_shutdown() exc_type, exc_value, exc_traceback = sys.exc_info()[:3] handle_exception(exc_type, exc_value, exc_traceback) def run_synchronous(window_class): qt_app = QtWidgets.QApplication(sys.argv) translator = QtCore.QTranslator(qt_app) locale = QtCore.QLocale.system().name() i18n_dir = os.path.join( os.path.dirname(os.path.realpath(__file__)), 'i18n') translator.load("qubesmanager_{!s}.qm".format(locale), i18n_dir) qt_app.installTranslator(translator) QtCore.QCoreApplication.installTranslator(translator) qt_app.setOrganizationName("The Qubes Project") qt_app.setOrganizationDomain("http://qubes-os.org") sys.excepthook = handle_exception qubes_app = qubesadmin.Qubes() window = window_class(qt_app, qubes_app) if hasattr(window, "setup_application"): window.setup_application() window.show() qt_app.exec_() qt_app.exit()