390 lines
15 KiB
Python
390 lines
15 KiB
Python
#!/usr/bin/python2
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#
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# The Qubes OS Project, http://www.qubes-os.org
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#
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# Copyright (C) 2012 Agnieszka Kostrzewa <agnieszka.kostrzewa@gmail.com>
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# Copyright (C) 2012 Marek Marczykowski <marmarek@mimuw.edu.pl>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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#
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import sys
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import os
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import shutil
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from PyQt4.QtCore import *
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from PyQt4.QtGui import *
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from qubes.qubes import QubesVmCollection
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from qubes.qubes import QubesException
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from qubes.qubes import QubesDaemonPidfile
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from qubes.qubes import QubesHost
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from qubes.qubes import qubes_base_dir
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import qubesmanager.resources_rc
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import signal
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from pyinotify import WatchManager, Notifier, ThreadedNotifier, EventsCodes, ProcessEvent
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import time
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from operator import itemgetter
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from thread_monitor import *
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from qubes import backup
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from qubes import qubesutils
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from ui_restoredlg import *
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from multiselectwidget import *
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from backup_utils import *
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from multiprocessing import Queue, Event
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from multiprocessing.queues import Empty
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class RestoreVMsWindow(Ui_Restore, QWizard):
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__pyqtSignals__ = ("restore_progress(int)","backup_progress(int)")
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def __init__(self, app, qvm_collection, blk_manager, parent=None):
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super(RestoreVMsWindow, self).__init__(parent)
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self.app = app
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self.qvm_collection = qvm_collection
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self.blk_manager = blk_manager
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self.restore_options = None
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self.vms_to_restore = None
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self.func_output = []
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self.feedback_queue = Queue()
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self.canceled = False
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self.tmpdir_to_remove = None
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self.error_detected = Event()
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self.excluded = {}
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self.vm = self.qvm_collection[0]
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assert self.vm != None
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self.setupUi(self)
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self.select_vms_widget = MultiSelectWidget(self)
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self.select_vms_layout.insertWidget(1, self.select_vms_widget)
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self.connect(self, SIGNAL("currentIdChanged(int)"), self.current_page_changed)
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self.connect(self, SIGNAL("restore_progress(QString)"), self.commit_text_edit.append)
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self.connect(self, SIGNAL("backup_progress(int)"), self.progress_bar.setValue)
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self.dir_line_edit.connect(self.dir_line_edit, SIGNAL("textChanged(QString)"), self.backup_location_changed)
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self.connect(self.verify_only, SIGNAL("stateChanged(int)"),
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self.on_verify_only_toogled)
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self.select_dir_page.isComplete = self.has_selected_dir
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self.select_vms_page.isComplete = self.has_selected_vms
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self.confirm_page.isComplete = self.all_vms_good
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#FIXME
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#this causes to run isComplete() twice, I don't know why
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self.select_vms_page.connect(self.select_vms_widget, SIGNAL("selected_changed()"), SIGNAL("completeChanged()"))
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fill_appvms_list(self)
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self.__init_restore_options__()
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@pyqtSlot(name='on_select_path_button_clicked')
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def select_path_button_clicked(self):
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select_path_button_clicked(self, True)
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def on_ignore_missing_toggled(self, checked):
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self.restore_options['use-default-template'] = checked
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self.restore_options['use-default-netvm'] = checked
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def on_ignore_uname_mismatch_toggled(self, checked):
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self.restore_options['ignore-username-mismatch'] = checked
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def on_verify_only_toogled(self, checked):
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self.restore_options['verify-only'] = bool(checked)
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def cleanupPage(self, p_int):
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if self.page(p_int) is self.select_vms_page:
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self.vms_to_restore = None
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else:
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super(RestoreVMsWindow, self).cleanupPage(p_int)
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def __fill_vms_list__(self):
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if self.vms_to_restore is not None:
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return
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self.select_vms_widget.selected_list.clear()
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self.select_vms_widget.available_list.clear()
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self.target_appvm = None
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if self.appvm_combobox.currentIndex() != 0: #An existing appvm chosen
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self.target_appvm = self.qvm_collection.get_vm_by_name(
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str(self.appvm_combobox.currentText()))
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try:
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self.vms_to_restore = backup.backup_restore_prepare(
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unicode(self.dir_line_edit.text()),
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unicode(self.passphrase_line_edit.text()),
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options=self.restore_options,
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host_collection=self.qvm_collection,
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encrypted=self.encryption_checkbox.isChecked(),
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appvm=self.target_appvm)
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for vmname in self.vms_to_restore:
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if vmname.startswith('$'):
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# Internal info
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continue
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self.select_vms_widget.available_list.addItem(vmname)
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except QubesException as ex:
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QMessageBox.warning (None, self.tr("Restore error!"), str(ex))
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def __init_restore_options__(self):
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if not self.restore_options:
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self.restore_options = {}
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backup.backup_restore_set_defaults(self.restore_options)
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if 'use-default-template' in self.restore_options and 'use-default-netvm' in self.restore_options:
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val = self.restore_options['use-default-template'] and self.restore_options['use-default-netvm']
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self.ignore_missing.setChecked(val)
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else:
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self.ignore_missing.setChecked(False)
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if 'ignore-username-mismatch' in self.restore_options:
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self.ignore_uname_mismatch.setChecked(self.restore_options['ignore-username-mismatch'])
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def gather_output(self, s):
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self.func_output.append(s)
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def restore_error_output(self, s):
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self.error_detected.set()
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self.feedback_queue.put((SIGNAL("restore_progress(QString)"),
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u'<font color="red">{0}</font>'.format(s)))
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def restore_output(self, s):
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self.feedback_queue.put((SIGNAL("restore_progress(QString)"),
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u'<font color="black">{0}</font>'.format(s)))
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def update_progress_bar(self, value):
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self.feedback_queue.put((SIGNAL("backup_progress(int)"), value))
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def __do_restore__(self, thread_monitor):
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err_msg = []
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self.qvm_collection.lock_db_for_writing()
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try:
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backup.backup_restore_do(self.vms_to_restore,
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self.qvm_collection,
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print_callback=self.restore_output,
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error_callback=self.restore_error_output,
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progress_callback=self.update_progress_bar)
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except backup.BackupCanceledError as ex:
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self.canceled = True
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self.tmpdir_to_remove = ex.tmpdir
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err_msg.append(unicode(ex))
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except Exception as ex:
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print ("Exception:", ex)
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err_msg.append(unicode(ex))
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err_msg.append(
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self.tr("Partially restored files left in "
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"/var/tmp/restore_*, investigate them and/or clean them up"))
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self.qvm_collection.unlock_db()
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if self.canceled:
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self.emit(SIGNAL("restore_progress(QString)"),
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'<b><font color="red">{0}</font></b>'
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.format(self.tr("Restore aborted!")))
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elif len(err_msg) > 0 or self.error_detected.is_set():
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if len(err_msg) > 0:
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thread_monitor.set_error_msg('\n'.join(err_msg))
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self.emit(SIGNAL("restore_progress(QString)"),
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'<b><font color="red">{0}</font></b>'
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.format(self.tr("Finished with errors!")))
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else:
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self.emit(SIGNAL("restore_progress(QString)"),
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'<font color="green">{0}</font>'
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.format(self.tr("Finished successfully!")))
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thread_monitor.set_finished()
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def current_page_changed(self, id):
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old_sigchld_handler = signal.signal(signal.SIGCHLD, signal.SIG_DFL)
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if self.currentPage() is self.select_vms_page:
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self.__fill_vms_list__()
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elif self.currentPage() is self.confirm_page:
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for v in self.excluded:
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self.vms_to_restore[v] = self.excluded[v]
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self.excluded = {}
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for i in range(self.select_vms_widget.available_list.count()):
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vmname = self.select_vms_widget.available_list.item(i).text()
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self.excluded[str(vmname)] = self.vms_to_restore[str(vmname)]
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del self.vms_to_restore[str(vmname)]
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del self.func_output[:]
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self.vms_to_restore = backup.restore_info_verify(self.vms_to_restore,
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self.qvm_collection)
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backup.backup_restore_print_summary(
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self.vms_to_restore, print_callback = self.gather_output)
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self.confirm_text_edit.setReadOnly(True)
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self.confirm_text_edit.setFontFamily("Monospace")
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self.confirm_text_edit.setText("\n".join(self.func_output))
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self.confirm_page.emit(SIGNAL("completeChanged()"))
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elif self.currentPage() is self.commit_page:
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self.button(self.FinishButton).setDisabled(True)
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self.showFileDialog.setEnabled(True)
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self.showFileDialog.setChecked(self.showFileDialog.isEnabled()
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and str(self.dir_line_edit.text())
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.count("media/") > 0)
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self.thread_monitor = ThreadMonitor()
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thread = threading.Thread (target= self.__do_restore__ , args=(self.thread_monitor,))
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thread.daemon = True
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thread.start()
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while not self.thread_monitor.is_finished():
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self.app.processEvents()
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time.sleep (0.1)
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try:
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for (signal_to_emit,data) in iter(self.feedback_queue.get_nowait,None):
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self.emit(signal_to_emit,data)
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except Empty:
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pass
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if not self.thread_monitor.success:
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if self.canceled:
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if self.tmpdir_to_remove and \
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QMessageBox.warning(None, self.tr("Restore aborted"),
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unicode(self.tr("Do you want to remove temporary files "
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"from %s?")) % self.tmpdir_to_remove,
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QMessageBox.Yes, QMessageBox.No) == \
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QMessageBox.Yes:
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shutil.rmtree(self.tmpdir_to_remove)
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else:
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QMessageBox.warning(None,
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self.tr("Backup error!"), unicode(self.tr("ERROR: {0}"))
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.format(self.thread_monitor.error_msg))
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if self.showFileDialog.isChecked():
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self.emit(SIGNAL("restore_progress(QString)"),
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'<b><font color="black">{0}</font></b>'.format(
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self.tr(
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"Please unmount your backup volume and cancel"
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" the file selection dialog.")))
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if self.target_appvm:
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self.target_appvm.run("QUBESRPC %s dom0" %
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"qubes.SelectDirectory")
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else:
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file_dialog = QFileDialog()
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file_dialog.setReadOnly(True)
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file_dialog.getExistingDirectory(
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self, self.tr("Detach backup device"),
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os.path.dirname(unicode(self.dir_line_edit.text())))
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self.progress_bar.setValue(100)
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self.button(self.FinishButton).setEnabled(True)
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self.button(self.CancelButton).setEnabled(False)
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self.showFileDialog.setEnabled(False)
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signal.signal(signal.SIGCHLD, old_sigchld_handler)
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def all_vms_good(self):
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for vminfo in self.vms_to_restore.values():
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if not vminfo.has_key('vm'):
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continue
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if not vminfo['good-to-go']:
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return False
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return True
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def reject(self):
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if self.currentPage() is self.commit_page:
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if backup.backup_cancel():
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self.emit(SIGNAL("restore_progress(QString)"),
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'<font color="red">{0}</font>'
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.format(self.tr("Aborting the operation...")))
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self.button(self.CancelButton).setDisabled(True)
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else:
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self.done(0)
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def has_selected_dir(self):
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backup_location = unicode(self.dir_line_edit.text())
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if not backup_location:
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return False
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if self.appvm_combobox.currentIndex() == 0:
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if os.path.isfile(backup_location) or \
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os.path.isfile(os.path.join(backup_location, 'qubes.xml')):
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return True
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else:
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return True
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return False
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def has_selected_vms(self):
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return self.select_vms_widget.selected_list.count() > 0
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def backup_location_changed(self, new_dir = None):
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self.select_dir_page.emit(SIGNAL("completeChanged()"))
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# Bases on the original code by:
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# Copyright (c) 2002-2007 Pascal Varet <p.varet@gmail.com>
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def handle_exception( exc_type, exc_value, exc_traceback ):
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import sys
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import os.path
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import traceback
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filename, line, dummy, dummy = traceback.extract_tb( exc_traceback ).pop()
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filename = os.path.basename( filename )
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error = "%s: %s" % ( exc_type.__name__, exc_value )
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QMessageBox.critical(None, "Houston, we have a problem...",
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"Whoops. A critical error has occured. This is most likely a bug "
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"in Qubes Restore VMs application.<br><br>"
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"<b><i>%s</i></b>" % error +
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"at <b>line %d</b> of file <b>%s</b>.<br/><br/>"
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% ( line, filename ))
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def main():
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global qubes_host
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qubes_host = QubesHost()
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global app
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app = QApplication(sys.argv)
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app.setOrganizationName("The Qubes Project")
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app.setOrganizationDomain("http://qubes-os.org")
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app.setApplicationName("Qubes Restore VMs")
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sys.excepthook = handle_exception
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qvm_collection = QubesVmCollection()
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qvm_collection.lock_db_for_reading()
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qvm_collection.load()
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qvm_collection.unlock_db()
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global restore_window
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restore_window = RestoreVMsWindow()
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restore_window.show()
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app.exec_()
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app.exit()
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if __name__ == "__main__":
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main()
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