#!/usr/bin/python2 # # The Qubes OS Project, http://www.qubes-os.org # # Copyright (C) 2012 Agnieszka Kostrzewa # Copyright (C) 2012 Marek Marczykowski # # 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, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. # # import sys import os import shutil from PyQt4.QtCore import * from PyQt4.QtGui import * from qubes.qubes import QubesVmCollection from qubes.qubes import QubesException from qubes.qubes import QubesDaemonPidfile from qubes.qubes import QubesHost from qubes.qubes import qubes_base_dir import qubesmanager.resources_rc import signal from pyinotify import WatchManager, Notifier, ThreadedNotifier, EventsCodes, ProcessEvent import time from operator import itemgetter from thread_monitor import * from qubes import backup from qubes import qubesutils from ui_restoredlg import * from multiselectwidget import * from backup_utils import * from multiprocessing import Queue, Event from multiprocessing.queues import Empty class RestoreVMsWindow(Ui_Restore, QWizard): __pyqtSignals__ = ("restore_progress(int)","backup_progress(int)") def __init__(self, app, qvm_collection, blk_manager, parent=None): super(RestoreVMsWindow, self).__init__(parent) self.app = app self.qvm_collection = qvm_collection self.blk_manager = blk_manager self.dev_mount_path = None self.restore_options = None self.vms_to_restore = None self.func_output = [] self.feedback_queue = Queue() self.canceled = False self.tmpdir_to_remove = None self.error_detected = Event() self.excluded = {} self.vm = self.qvm_collection[0] assert self.vm != None self.setupUi(self) self.select_vms_widget = MultiSelectWidget(self) self.select_vms_layout.insertWidget(1, self.select_vms_widget) self.connect(self, SIGNAL("currentIdChanged(int)"), self.current_page_changed) self.connect(self.dev_combobox, SIGNAL("activated(int)"), self.dev_combobox_activated) self.connect(self, SIGNAL("restore_progress(QString)"), self.commit_text_edit.append) self.connect(self, SIGNAL("backup_progress(int)"), self.progress_bar.setValue) self.dir_line_edit.connect(self.dir_line_edit, SIGNAL("textChanged(QString)"), self.backup_location_changed) self.connect(self.dev_combobox, SIGNAL("activated(int)"), self.update_device_appvm_enabled) self.connect(self.appvm_combobox, SIGNAL("activated(int)"), self.update_device_appvm_enabled) self.connect(self.verify_only, SIGNAL("stateChanged(int)"), self.on_verify_only_toogled) self.select_dir_page.isComplete = self.has_selected_dir self.select_vms_page.isComplete = self.has_selected_vms self.confirm_page.isComplete = self.all_vms_good #FIXME #this causes to run isComplete() twice, I don't know why self.select_vms_page.connect(self.select_vms_widget, SIGNAL("selected_changed()"), SIGNAL("completeChanged()")) fill_devs_list(self) fill_appvms_list(self) self.__init_restore_options__() def dev_combobox_activated(self, idx): dev_combobox_activated(self, idx) def update_device_appvm_enabled(self, idx): update_device_appvm_enabled(self, idx) @pyqtSlot(name='on_select_path_button_clicked') def select_path_button_clicked(self): select_path_button_clicked(self, True) def on_ignore_missing_toggled(self, checked): self.restore_options['use-default-template'] = checked self.restore_options['use-default-netvm'] = checked def on_ignore_uname_mismatch_toggled(self, checked): self.restore_options['ignore-username-mismatch'] = checked def on_verify_only_toogled(self, checked): self.restore_options['verify-only'] = bool(checked) def cleanupPage(self, p_int): if self.page(p_int) is self.select_vms_page: self.vms_to_restore = None else: super(RestoreVMsWindow, self).cleanupPage(p_int) def __fill_vms_list__(self): if self.vms_to_restore is not None: return self.select_vms_widget.selected_list.clear() self.select_vms_widget.available_list.clear() self.target_appvm = None if self.appvm_combobox.currentIndex() != 0: #An existing appvm chosen self.target_appvm = self.qvm_collection.get_vm_by_name( str(self.appvm_combobox.currentText())) try: self.vms_to_restore = backup.backup_restore_prepare( unicode(self.dir_line_edit.text()), unicode(self.passphrase_line_edit.text()), options=self.restore_options, host_collection=self.qvm_collection, encrypted=self.encryption_checkbox.isChecked(), appvm=self.target_appvm) for vmname in self.vms_to_restore: if vmname.startswith('$'): # Internal info continue self.select_vms_widget.available_list.addItem(vmname) except QubesException as ex: QMessageBox.warning (None, "Restore error!", str(ex)) def __init_restore_options__(self): if not self.restore_options: self.restore_options = {} backup.backup_restore_set_defaults(self.restore_options) if 'use-default-template' in self.restore_options and 'use-default-netvm' in self.restore_options: val = self.restore_options['use-default-template'] and self.restore_options['use-default-netvm'] self.ignore_missing.setChecked(val) else: self.ignore_missing.setChecked(False) if 'ignore-username-mismatch' in self.restore_options: self.ignore_uname_mismatch.setChecked(self.restore_options['ignore-username-mismatch']) def gather_output(self, s): self.func_output.append(s) def restore_error_output(self, s): self.error_detected.set() self.feedback_queue.put((SIGNAL("restore_progress(QString)"), u'{0}'.format(s))) def restore_output(self, s): self.feedback_queue.put((SIGNAL("restore_progress(QString)"), u'{0}'.format(s))) def update_progress_bar(self, value): self.feedback_queue.put((SIGNAL("backup_progress(int)"), value)) def __do_restore__(self, thread_monitor): err_msg = [] self.qvm_collection.lock_db_for_writing() try: backup.backup_restore_do(self.vms_to_restore, self.qvm_collection, print_callback=self.restore_output, error_callback=self.restore_error_output, progress_callback=self.update_progress_bar) except backup.BackupCanceledError as ex: self.canceled = True self.tmpdir_to_remove = ex.tmpdir err_msg.append(unicode(ex)) except Exception as ex: print "Exception:", ex err_msg.append(unicode(ex)) err_msg.append("Partially restored files left in " "/var/tmp/restore_*, investigate them and/or clean them up") self.qvm_collection.unlock_db() if self.canceled: self.emit(SIGNAL("restore_progress(QString)"), '{0}' .format("Restore aborted!")) elif len(err_msg) > 0 or self.error_detected.is_set(): if len(err_msg) > 0: thread_monitor.set_error_msg('\n'.join(err_msg)) self.emit(SIGNAL("restore_progress(QString)"), '{0}' .format("Finished with errors!")) else: self.emit(SIGNAL("restore_progress(QString)"), '{0}' .format("Finished successfully!")) thread_monitor.set_finished() def current_page_changed(self, id): old_sigchld_handler = signal.signal(signal.SIGCHLD, signal.SIG_DFL) if self.currentPage() is self.select_vms_page: self.__fill_vms_list__() elif self.currentPage() is self.confirm_page: for v in self.excluded: self.vms_to_restore[v] = self.excluded[v] self.excluded = {} for i in range(self.select_vms_widget.available_list.count()): vmname = self.select_vms_widget.available_list.item(i).text() self.excluded[str(vmname)] = self.vms_to_restore[str(vmname)] del self.vms_to_restore[str(vmname)] del self.func_output[:] self.vms_to_restore = backup.restore_info_verify(self.vms_to_restore, self.qvm_collection) backup.backup_restore_print_summary( self.vms_to_restore, print_callback = self.gather_output) self.confirm_text_edit.setReadOnly(True) self.confirm_text_edit.setFontFamily("Monospace") self.confirm_text_edit.setText("\n".join(self.func_output)) self.confirm_page.emit(SIGNAL("completeChanged()")) elif self.currentPage() is self.commit_page: self.button(self.FinishButton).setDisabled(True) self.showFileDialog.setEnabled(True) self.showFileDialog.setChecked(self.showFileDialog.isEnabled() and str(self.dir_line_edit.text()) .count("media/") > 0) self.thread_monitor = ThreadMonitor() thread = threading.Thread (target= self.__do_restore__ , args=(self.thread_monitor,)) thread.daemon = True thread.start() while not self.thread_monitor.is_finished(): self.app.processEvents() time.sleep (0.1) try: for (signal_to_emit,data) in iter(self.feedback_queue.get_nowait,None): self.emit(signal_to_emit,data) except Empty: pass if not self.thread_monitor.success: if self.canceled: if self.tmpdir_to_remove and \ QMessageBox.warning(None, "Restore aborted", "Do you want to remove temporary " "files from %s?" % self .tmpdir_to_remove, QMessageBox.Yes, QMessageBox.No) == \ QMessageBox.Yes: shutil.rmtree(self.tmpdir_to_remove) else: QMessageBox.warning (None, "Backup error!", "ERROR: {1}" .format(self.vm.name, self.thread_monitor.error_msg)) if self.dev_mount_path != None: umount_device(self.dev_mount_path) self.dev_mount_path = None detach_device(self, str(self.dev_combobox.itemData( self.dev_combobox.currentIndex()).toString())) elif self.showFileDialog.isChecked(): self.emit(SIGNAL("restore_progress(QString)"), '{0}'.format( "Please unmount your backup volume and cancel " "the file selection dialog.")) if self.target_appvm: self.target_appvm.run("QUBESRPC %s dom0" % "qubes" ".SelectDirectory") else: file_dialog = QFileDialog() file_dialog.setReadOnly(True) file_dialog.getExistingDirectory(self, "Detach backup device", self.dev_mount_path) self.progress_bar.setValue(100) self.button(self.FinishButton).setEnabled(True) self.button(self.CancelButton).setEnabled(False) self.showFileDialog.setEnabled(False) signal.signal(signal.SIGCHLD, old_sigchld_handler) def all_vms_good(self): for vminfo in self.vms_to_restore.values(): if not vminfo.has_key('vm'): continue if not vminfo['good-to-go']: return False return True def reject(self): if self.currentPage() is self.commit_page: if backup.backup_cancel(): self.emit(SIGNAL("restore_progress(QString)"), '{0}' .format("Aborting the operation...")) self.button(self.CancelButton).setDisabled(True) else: if self.dev_mount_path != None: umount_device(self.dev_mount_path) detach_device(self, str(self.dev_combobox.itemData( self.dev_combobox.currentIndex()).toString())) self.done(0) def has_selected_dir(self): backup_location = unicode(self.dir_line_edit.text()) if not backup_location: return False if self.appvm_combobox.currentIndex() == 0: if os.path.isfile(backup_location) or \ os.path.isfile(os.path.join(backup_location, 'qubes.xml')): return True else: return True return False def has_selected_vms(self): return self.select_vms_widget.selected_list.count() > 0 def backup_location_changed(self, new_dir = None): self.select_dir_page.emit(SIGNAL("completeChanged()")) # Bases on the original code by: # Copyright (c) 2002-2007 Pascal Varet def handle_exception( exc_type, exc_value, exc_traceback ): import sys import os.path import traceback filename, line, dummy, dummy = traceback.extract_tb( exc_traceback ).pop() filename = os.path.basename( filename ) error = "%s: %s" % ( exc_type.__name__, exc_value ) QMessageBox.critical(None, "Houston, we have a problem...", "Whoops. A critical error has occured. This is most likely a bug " "in Qubes Restore VMs application.

" "%s" % error + "at line %d of file %s.

" % ( line, filename )) def main(): global qubes_host qubes_host = QubesHost() global app app = QApplication(sys.argv) app.setOrganizationName("The Qubes Project") app.setOrganizationDomain("http://qubes-os.org") app.setApplicationName("Qubes Restore VMs") sys.excepthook = handle_exception qvm_collection = QubesVmCollection() qvm_collection.lock_db_for_reading() qvm_collection.load() qvm_collection.unlock_db() global restore_window restore_window = RestoreVMsWindow() restore_window.show() app.exec_() app.exit() if __name__ == "__main__": main()