#!/usr/bin/python3 # # The Qubes OS Project, http://www.qubes-os.org # # Copyright (C) 2018 Marta Marczykowska-Górecka # # # 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 Lesser General Public License along # with this program; if not, see . # # from qubesadmin import exc from PyQt5 import QtWidgets, QtGui, QtCore # pylint: disable=import-error from . import ui_templatemanager # pylint: disable=no-name-in-module from . import utils column_names = ['State', 'Qube', 'Current template', 'New template'] class TemplateManagerWindow( ui_templatemanager.Ui_MainWindow, QtWidgets.QMainWindow): def __init__(self, qt_app, qubes_app, dispatcher, parent=None): # pylint: disable=unused-argument super().__init__() self.setupUi(self) self.qubes_app = qubes_app self.qt_app = qt_app self.dispatcher = dispatcher self.rows_in_table = {} self.templates = [] self.timers = [] self.prepare_lists() self.initialize_table_events() self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok).clicked.connect( self.apply) self.buttonBox.button( QtWidgets.QDialogButtonBox.Cancel).clicked.connect(self.cancel) self.buttonBox.button(QtWidgets.QDialogButtonBox.Reset).clicked.connect( self.reset) self.change_all_combobox.currentIndexChanged.connect( self.change_all_changed) self.clear_selection_button.clicked.connect(self.clear_selection) self.vm_list.show() def setup_application(self): self.qt_app.setApplicationName(self.tr("Template Manager")) self.qt_app.setWindowIcon(QtGui.QIcon.fromTheme("qubes-manager")) def prepare_lists(self): self.templates = [vm.name for vm in self.qubes_app.domains if vm.klass == 'TemplateVM'] self.change_all_combobox.addItem(self.tr('(select template)')) for template in self.templates: self.change_all_combobox.addItem(template) vms_with_templates = [vm for vm in self.qubes_app.domains if getattr(vm, 'template', None) and vm.klass != 'DispVM'] self.vm_list.setColumnCount(len(column_names)) self.vm_list.setRowCount(len(vms_with_templates)) row_count = 0 for vm in vms_with_templates: row = VMRow(vm, row_count, self.vm_list, column_names, self.templates) self.rows_in_table[vm.name] = row row_count += 1 self.vm_list.setHorizontalHeaderLabels( ['', self.tr('Qube'), self.tr('Current'), self.tr('New')]) self.vm_list.resizeColumnsToContents() def initialize_table_events(self): self.vm_list.cellDoubleClicked.connect(self.table_double_click) self.vm_list.cellClicked.connect(self.table_click) self.vm_list.horizontalHeader().sortIndicatorChanged.connect( self.sorting_changed) self.dispatcher.add_handler('domain-pre-start', self.vm_state_changed) self.dispatcher.add_handler('domain-start-failed', self.vm_state_changed) self.dispatcher.add_handler('domain-stopped', self.vm_state_changed) self.dispatcher.add_handler('domain-shutdown', self.vm_state_changed) self.dispatcher.add_handler('domain-add', self.vm_added) self.dispatcher.add_handler('domain-delete', self.vm_removed) def vm_added(self, _submitter, _event, vm, **_kwargs): # unfortunately, a VM just in the moment of creation may not have # a template it will have in a second - e.g., when cloning timer = QtCore.QTimer() timer.setSingleShot(True) timer.timeout.connect(lambda: self._vm_added(vm, timer)) self.timers.append(timer) timer.start(1000) # 1s def _vm_added(self, vm_name, timer): self.timers.remove(timer) try: vm = self.qubes_app.domains[vm_name] if not getattr(vm, 'template', None) or vm.klass == 'DispVM': return except (exc.QubesException, KeyError): return # it was a dispVM that crashed on start row_no = self.vm_list.rowCount() self.vm_list.setRowCount(self.vm_list.rowCount() + 1) row = VMRow(vm, row_no, self.vm_list, column_names, self.templates) self.rows_in_table[vm.name] = row self.vm_list.show() def vm_removed(self, _submitter, _event, **kwargs): if kwargs['vm'] not in self.rows_in_table: return self.vm_list.removeRow(self.rows_in_table[kwargs['vm']].name_item.row()) def vm_state_changed(self, vm, event, **_kwargs): try: if vm.name not in self.rows_in_table: return except exc.QubesException: return # it was a crashing DispVM or closed DispVM if event == 'domain-pre-start': self.rows_in_table[vm.name].vm_state_change(is_running=True) elif event == 'domain-start-failed': self.rows_in_table[vm.name].vm_state_change(is_running=False) elif event == 'domain-stopped': self.rows_in_table[vm.name].vm_state_change(is_running=False) elif event == 'domain-shutdown': self.rows_in_table[vm.name].vm_state_change(is_running=False) def sorting_changed(self, index, _order): # this is very much not perfect, but QTableWidget does not # want to be sorted on custom widgets if index == column_names.index('New template') or \ index == column_names.index('State'): self.vm_list.horizontalHeader().setSortIndicator( -1, QtCore.Qt.AscendingOrder) def clear_selection(self): for row in self.rows_in_table.values(): if row.checkbox: row.checkbox.setChecked(False) def change_all_changed(self): if self.change_all_combobox.currentIndex() == 0: return selected_template = self.change_all_combobox.currentText() for row in self.rows_in_table.values(): if row.checkbox and row.checkbox.isChecked(): row.new_item.setCurrentIndex( row.new_item.findText(selected_template)) self.change_all_combobox.setCurrentIndex(0) def table_double_click(self, row, column): template_column = column_names.index('Current template') if column != template_column: return template_name = self.vm_list.item(row, column).text() for row_number in range(0, self.vm_list.rowCount()): if self.vm_list.item( row_number, template_column).text() == template_name: checkbox = self.vm_list.cellWidget( row_number, column_names.index('State')) if checkbox: if row_number == row: # this is because double click registers as a # single click and a double click checkbox.setChecked(False) else: checkbox.setChecked(True) def table_click(self, row, column): if column == column_names.index('New template'): return checkbox = self.vm_list.cellWidget(row, column_names.index('State')) if not checkbox: return checkbox.setChecked(not checkbox.isChecked()) def reset(self): for row in self.rows_in_table.values(): if row.new_item: row.new_item.reset_choice() if row.checkbox: row.checkbox.setChecked(False) def cancel(self): self.close() def apply(self): errors = {} for vm, row in self.rows_in_table.items(): if row.new_item and row.new_item.changed: try: setattr(self.qubes_app.domains[vm], 'template', row.new_item.currentText()) except Exception as ex: # pylint: disable=broad-except errors[vm] = str(ex) if errors: error_messages = [vm + ": " + errors[vm] for vm in errors] QtWidgets.QMessageBox.warning( self, self.tr("Errors encountered!"), self.tr( "Errors encountered on template change in the following " "qubes:
{}.").format("
".join(error_messages))) self.close() class VMNameItem(QtWidgets.QTableWidgetItem): # pylint: disable=too-few-public-methods def __init__(self, vm): super().__init__() self.vm = vm self.setText(self.vm.name) self.setIcon(QtGui.QIcon.fromTheme(vm.label.icon)) class StatusItem(QtWidgets.QTableWidgetItem): def __init__(self, vm): super().__init__() self.vm = vm self.state = None def set_state(self, is_running): self.state = is_running if self.state: self.setIcon(QtGui.QIcon.fromTheme('dialog-warning')) self.setToolTip(QtCore.QCoreApplication.translate( "template-manager", "Cannot change template on a running VM.")) else: self.setIcon(QtGui.QIcon()) self.setToolTip("") def __lt__(self, other): if self.state == other.state: return self.vm.name < other.vm.name return self.state < other.state class CurrentTemplateItem(QtWidgets.QTableWidgetItem): # pylint: disable=too-few-public-methods def __init__(self, vm): super().__init__() self.vm = vm self.setText(self.vm.template.name) def __lt__(self, other): if self.text() == other.text(): return self.vm.name < other.vm.name return self.text() < other.text() class NewTemplateItem(QtWidgets.QComboBox): def __init__(self, vm, templates, table_widget): super().__init__() self.vm = vm self.table_widget = table_widget self.changed = False for template in templates: self.addItem(template) self.setCurrentIndex(self.findText(vm.template.name)) self.start_value = self.currentText() self.currentIndexChanged.connect(self.choice_changed) def choice_changed(self): if self.currentText() != self.start_value: self.changed = True self.setStyleSheet('font-weight: bold') else: self.changed = False self.setStyleSheet('font-weight: normal') def reset_choice(self): self.setCurrentIndex(self.findText(self.start_value)) class VMRow: # pylint: disable=too-few-public-methods def __init__(self, vm, row_no, table_widget, columns, templates): self.vm = vm self.table_widget = table_widget self.templates = templates # state self.state_item = StatusItem(self.vm) table_widget.setItem(row_no, columns.index('State'), self.state_item) self.checkbox = QtWidgets.QCheckBox() # icon and name self.name_item = VMNameItem(self.vm) table_widget.setItem(row_no, columns.index('Qube'), self.name_item) # current template self.current_item = CurrentTemplateItem(self.vm) table_widget.setItem(row_no, columns.index('Current template'), self.current_item) # new template self.dummy_new_item = QtWidgets.QTableWidgetItem( QtCore.QCoreApplication.translate("TemplateManager", "qube is running")) self.new_item = NewTemplateItem(self.vm, templates, table_widget) table_widget.setItem(row_no, columns.index('New template'), self.dummy_new_item) self.vm_state_change(utils.is_running(self.vm, False), row_no) def vm_state_change(self, is_running, row=None): self.state_item.set_state(is_running) if not row: row = 0 while row < self.table_widget.rowCount(): if self.table_widget.item( row, column_names.index('Qube')).text() == \ self.name_item.text(): break row += 1 # hiding cellWidgets does not work in a qTableWidget if not is_running: self.new_item = NewTemplateItem(self.vm, self.templates, self.table_widget) self.checkbox = QtWidgets.QCheckBox() self.table_widget.setCellWidget( row, column_names.index('New template'), self.new_item) self.table_widget.setCellWidget( row, column_names.index('State'), self.checkbox) else: new_template = self.table_widget.cellWidget( row, column_names.index('New template')) if new_template: self.table_widget.removeCellWidget( row, column_names.index('New template')) self.new_item = None checkbox = self.table_widget.cellWidget( row, column_names.index('State')) if checkbox: self.table_widget.removeCellWidget( row, column_names.index('State')) self.checkbox = None def main(): utils.run_asynchronous(TemplateManagerWindow) if __name__ == "__main__": main()