442 lines
16 KiB
Python
442 lines
16 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 signal
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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 import backup
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from qubes import qubesutils
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import qubesmanager.resources_rc
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from pyinotify import WatchManager, Notifier, ThreadedNotifier, EventsCodes, ProcessEvent
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import subprocess
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import time
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from thread_monitor import *
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from operator import itemgetter
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from datetime import datetime
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from string import replace
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from ui_backupdlg import *
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from multiselectwidget import *
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from backup_utils import *
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import grp,pwd
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class BackupVMsWindow(Ui_Backup, QWizard):
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__pyqtSignals__ = ("backup_progress(int)",)
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def __init__(self, app, qvm_collection, blk_manager, shutdown_vm_func, parent=None):
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super(BackupVMsWindow, 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.shutdown_vm_func = shutdown_vm_func
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self.dev_mount_path = None
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self.func_output = []
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self.selected_vms = []
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self.vm = self.qvm_collection[0]
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self.files_to_backup = None
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assert self.vm != None
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self.setupUi(self)
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self.progress_status.text = "Backup in progress..."
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self.show_running_vms_warning(False)
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self.dir_line_edit.setReadOnly(False)
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self.select_vms_widget = MultiSelectWidget(self)
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self.verticalLayout.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.select_vms_widget, SIGNAL("selected_changed()"), self.check_running)
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self.connect(self.select_vms_widget, SIGNAL("items_removed(PyQt_PyObject)"), self.vms_removed)
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self.connect(self.select_vms_widget, SIGNAL("items_added(PyQt_PyObject)"), self.vms_added)
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self.refresh_button.clicked.connect(self.check_running)
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self.shutdown_running_vms_button.clicked.connect(self.shutdown_all_running_selected)
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self.connect(self.dev_combobox, SIGNAL("activated(int)"), self.dev_combobox_activated)
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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.dev_combobox, SIGNAL("activated(int)"),
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self.update_device_appvm_enabled)
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self.connect(self.appvm_combobox, SIGNAL("activated(int)"),
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self.update_device_appvm_enabled)
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self.select_vms_page.isComplete = self.has_selected_vms
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self.select_dir_page.isComplete = self.has_selected_dir_and_pass
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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(
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self.select_vms_widget,
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SIGNAL("selected_changed()"),
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SIGNAL("completeChanged()"))
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self.passphrase_line_edit.connect(
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self.passphrase_line_edit,
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SIGNAL("textChanged(QString)"),
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self.backup_location_changed)
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self.passphrase_line_edit_verify.connect(
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self.passphrase_line_edit_verify,
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SIGNAL("textChanged(QString)"),
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self.backup_location_changed)
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self.total_size = 0
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self.__fill_vms_list__()
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fill_devs_list(self)
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fill_appvms_list(self)
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def show_running_vms_warning(self, show):
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self.running_vms_warning.setVisible(show)
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self.shutdown_running_vms_button.setVisible(show)
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self.refresh_button.setVisible(show)
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class VmListItem(QListWidgetItem):
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def __init__(self, vm):
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self.vm = vm
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if vm.qid == 0:
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local_user = grp.getgrnam('qubes').gr_mem[0]
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home_dir = pwd.getpwnam(local_user).pw_dir
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self.size = backup.get_disk_usage(home_dir)
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else:
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self.size = self.get_vm_size(vm)
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super(BackupVMsWindow.VmListItem, self).__init__(vm.name+ " (" + qubesutils.size_to_human(self.size) + ")")
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def get_vm_size(self, vm):
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size = 0
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if vm.private_img is not None:
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size += vm.get_disk_usage (vm.private_img)
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if vm.updateable:
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size += vm.get_disk_usage(vm.root_img)
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return size
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def __fill_vms_list__(self):
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for vm in self.qvm_collection.values():
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if vm.is_appvm() and vm.internal:
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continue
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if vm.is_template() and vm.installed_by_rpm:
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continue
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item = BackupVMsWindow.VmListItem(vm)
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if vm.include_in_backups == True:
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self.select_vms_widget.selected_list.addItem(item)
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self.total_size += item.size
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else:
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self.select_vms_widget.available_list.addItem(item)
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self.check_running()
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self.total_size_label.setText(qubesutils.size_to_human(self.total_size))
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def vms_added(self, items):
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for i in items:
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self.total_size += i.size
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self.total_size_label.setText(qubesutils.size_to_human(self.total_size))
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def vms_removed(self, items):
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for i in items:
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self.total_size -= i.size
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self.total_size_label.setText(qubesutils.size_to_human(self.total_size))
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def check_running(self):
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some_selected_vms_running = False
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for i in range(self.select_vms_widget.selected_list.count()):
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item = self.select_vms_widget.selected_list.item(i)
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if item.vm.is_running() and item.vm.qid != 0:
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item.setForeground(QBrush(QColor(255, 0, 0)))
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some_selected_vms_running = True
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else:
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item.setForeground(QBrush(QColor(0, 0, 0)))
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self.show_running_vms_warning(some_selected_vms_running)
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for i in range(self.select_vms_widget.available_list.count()):
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item = self.select_vms_widget.available_list.item(i)
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if item.vm.is_running() and item.vm.qid != 0:
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item.setForeground(QBrush(QColor(255, 0, 0)))
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else:
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item.setForeground(QBrush(QColor(0, 0, 0)))
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return some_selected_vms_running
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def shutdown_all_running_selected(self):
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(names, vms) = self.get_running_vms()
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if len(vms) == 0:
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return;
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for vm in vms:
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self.blk_manager.check_if_serves_as_backend(vm)
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reply = QMessageBox.question(None, "VM Shutdown Confirmation",
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"Are you sure you want to power down the following VMs: <b>{0}</b>?<br>"
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"<small>This will shutdown all the running applications within them.</small>".format(', '.join(names)),
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QMessageBox.Yes | QMessageBox.Cancel)
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self.app.processEvents()
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if reply == QMessageBox.Yes:
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wait_time = 60.0
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for vm in vms:
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self.shutdown_vm_func(vm, wait_time*1000)
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progress = QProgressDialog ("Shutting down VMs <b>{0}</b>...".format(', '.join(names)), "", 0, 0)
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progress.setModal(True)
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progress.show()
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wait_for = wait_time
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while self.check_running() and wait_for > 0:
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self.app.processEvents()
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time.sleep (0.5)
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wait_for -= 0.5
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progress.hide()
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def get_running_vms(self):
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names = []
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vms = []
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for i in range(self.select_vms_widget.selected_list.count()):
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item = self.select_vms_widget.selected_list.item(i)
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if item.vm.is_running() and item.vm.qid != 0:
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names.append(item.vm.name)
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vms.append(item.vm)
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return (names, vms)
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def dev_combobox_activated(self, idx):
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dev_combobox_activated(self, idx)
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def update_device_appvm_enabled(self, idx):
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update_device_appvm_enabled(self, idx)
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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)
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def validateCurrentPage(self):
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if self.currentPage() is self.select_vms_page:
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if self.check_running():
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QMessageBox.information(None, "Wait!", "Some selected VMs are running. Running VMs can not be backuped. Please shut them down or remove them from the list.")
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return False
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self.selected_vms = []
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for i in range(self.select_vms_widget.selected_list.count()):
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self.selected_vms.append(self.select_vms_widget.selected_list.item(i).vm)
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elif self.currentPage() is self.select_dir_page:
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backup_location = str(self.dir_line_edit.text())
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if not backup_location:
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QMessageBox.information(None, "Wait!", "Enter backup target location first.")
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return False
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if self.appvm_combobox.currentIndex() == 0 and \
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not os.path.isdir(backup_location):
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QMessageBox.information(None, "Wait!",
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"Selected directory do not exists or not a directory (%s)." % backup_location)
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return False
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if not len(self.passphrase_line_edit.text()):
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QMessageBox.information(None, "Wait!", "Enter passphrase for backup encryption/verification first.")
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return False
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if self.passphrase_line_edit.text() != self.passphrase_line_edit_verify.text():
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QMessageBox.information(None, "Wait!", "Enter the same passphrase in both fields.")
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return False
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return True
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def gather_output(self, s):
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self.func_output.append(s)
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def update_progress_bar(self, value):
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self.emit(SIGNAL("backup_progress(int)"), value)
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def __do_backup__(self, thread_monitor):
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msg = []
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try:
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backup.backup_do(str(self.dir_line_edit.text()),
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self.files_to_backup,
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str(self.passphrase_line_edit.text()),
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progress_callback=self.update_progress_bar,
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encrypted=self.encryption_checkbox.isChecked(),
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appvm=self.target_appvm)
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#simulate_long_lasting_proces(10, self.update_progress_bar)
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except Exception as ex:
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print "Exception:",ex
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msg.append(str(ex))
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if len(msg) > 0 :
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thread_monitor.set_error_msg('\n'.join(msg))
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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.confirm_page:
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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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self.appvm_combobox.currentText())
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del self.func_output[:]
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try:
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self.files_to_backup = backup.backup_prepare(
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self.selected_vms,
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print_callback = self.gather_output,
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hide_vm_names=self.encryption_checkbox.isChecked())
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except Exception as ex:
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print "Exception:",ex
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QMessageBox.critical(None, "Error while preparing backup.", "ERROR: {0}".format(ex))
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self.textEdit.setReadOnly(True)
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self.textEdit.setFontFamily("Monospace")
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self.textEdit.setText("\n".join(self.func_output))
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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.button(self.CancelButton).setDisabled(True)
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self.thread_monitor = ThreadMonitor()
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thread = threading.Thread (target= self.__do_backup__ , args=(self.thread_monitor,))
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thread.daemon = True
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thread.start()
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self.button(self.CancelButton).setDisabled(False)
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counter = 0
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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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if not self.thread_monitor.success:
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self.progress_status.setText("Backup error.")
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QMessageBox.warning (self, "Backup error!", "ERROR: {}".format(
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self.thread_monitor.error_msg))
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else:
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self.progress_bar.setValue(100)
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self.progress_status.setText("Backup finished.")
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if self.dev_mount_path != None:
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umount_device(self.dev_mount_path)
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detach_device(self, str(self.dev_combobox.itemData(
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self.dev_combobox.currentIndex()).toString()))
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self.button(self.FinishButton).setEnabled(True)
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signal.signal(signal.SIGCHLD, old_sigchld_handler)
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def reject(self):
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#cancell clicked while the backup is in progress.
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#calling kill on tar.
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if self.currentPage() is self.commit_page:
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manager_pid = os.getpid()
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archive_pid_cmd = ["ps" ,"--ppid", str(manager_pid)]
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while not self.thread_monitor.is_finished():
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archive_pid = subprocess.Popen(archive_pid_cmd, stdout = subprocess.PIPE)
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output = archive_pid.stdout.readlines()
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for l in output:
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if l.strip().endswith("tar"):
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os.kill(int(l.split(" ")[0]), signal.SIGTERM)
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time.sleep(0.1)
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if self.dev_mount_path != None:
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umount_device(self.dev_mount_path)
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self.done(0)
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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 has_selected_dir_and_pass(self):
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if not len(self.passphrase_line_edit.text()):
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return False
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if self.passphrase_line_edit.text() != self.passphrase_line_edit_verify.text():
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return False
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return len(self.dir_line_edit.text()) > 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 Backup 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 backup_window
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backup_window = BackupVMsWindow()
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backup_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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