266 lines
8.8 KiB
Python
266 lines
8.8 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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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) 2014 Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
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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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from multiprocessing import Event, Queue
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import os
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import shutil
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import unittest
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import sys
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from qubes.qubes import QubesVmCollection, QubesException
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from qubes import backup
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VM_PREFIX = "test-"
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class BackupTests(unittest.TestCase):
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def setUp(self):
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self.error_detected = Queue()
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self.verbose = False
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self.qc = QubesVmCollection()
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self.qc.lock_db_for_writing()
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self.qc.load()
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if self.verbose:
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print >>sys.stderr, "-> Creating backupvm"
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self.backupvm = self.qc.add_new_vm("QubesAppVm",
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name="%sbackupvm" % VM_PREFIX,
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template=self.qc.get_default_template())
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self.backupvm.create_on_disk(verbose=self.verbose)
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self.qc.save()
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self.qc.unlock_db()
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self.backupdir = os.path.join(os.environ["HOME"], "test-backup")
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os.mkdir(self.backupdir)
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def tearDown(self):
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if self.backupvm.is_running():
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self.backupvm.force_shutdown()
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vmlist = [vm for vm in self.qc.values() if vm.name.startswith(
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VM_PREFIX)]
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self.remove_vms(vmlist)
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shutil.rmtree(self.backupdir)
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def print_progress(self, progress):
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if self.verbose:
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print >> sys.stderr, "\r-> Backing up files: {0}%...".format(progress)
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def error_callback(self, message):
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self.error_detected.put(message)
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if self.verbose:
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print >> sys.stderr, "ERROR: {0}".format(message)
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def print_callback(self, msg):
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if self.verbose:
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print msg
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def fill_image(self, path, size=None, sparse=False):
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block_size = 4096
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if self.verbose:
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print >>sys.stderr, "-> Filling %s" % path
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f = open(path, 'w+')
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if size is None:
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f.seek(0, 2)
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size = f.tell()
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f.seek(0)
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for block_num in xrange(size/block_size):
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f.write('a' * block_size)
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if sparse:
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f.seek(block_size, 1)
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f.close()
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def create_basic_vms(self, leave_locked=False):
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template=self.qc.get_default_template()
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vms = []
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self.qc.lock_db_for_writing()
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self.qc.load()
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vmname = "%stest1" % VM_PREFIX
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if self.verbose:
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print >>sys.stderr, "-> Creating %s" % vmname
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testvm1 = self.qc.add_new_vm("QubesAppVm",
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name=vmname,
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template=template)
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testvm1.create_on_disk(verbose=self.verbose)
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vms.append(testvm1)
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self.fill_image(testvm1.private_img, 100*1024*1024)
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vmname = "%stesthvm1" % VM_PREFIX
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if self.verbose:
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print >>sys.stderr, "-> Creating %s" % vmname
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testvm2 = self.qc.add_new_vm("QubesHVm",
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name=vmname)
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testvm2.create_on_disk(verbose=self.verbose)
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self.fill_image(testvm2.root_img, 1024*1024*1024, True)
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vms.append(testvm2)
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if not leave_locked:
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self.qc.save()
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self.qc.unlock_db()
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return vms
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def remove_vms(self, vms):
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self.qc.lock_db_for_writing()
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self.qc.load()
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for vm in vms:
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if isinstance(vm, str):
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vm = self.qc.get_vm_by_name(vm)
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else:
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vm = self.qc[vm.qid]
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if self.verbose:
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print >>sys.stderr, "-> Removing %s" % vm.name
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vm.remove_from_disk()
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self.qc.pop(vm.qid)
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self.qc.save()
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self.qc.unlock_db()
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def make_backup(self, vms, prepare_kwargs=dict(), do_kwargs=dict(),
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target=None):
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if target is None:
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target = self.backupdir
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try:
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files_to_backup = \
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backup.backup_prepare(vms,
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print_callback=self.print_callback,
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**prepare_kwargs)
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except QubesException as e:
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self.fail("QubesException during backup_prepare: %s" % str(e))
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try:
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backup.backup_do(target, files_to_backup, "qubes",
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progress_callback=self.print_progress,
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**do_kwargs)
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except QubesException as e:
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self.fail("QubesException during backup_do: %s" % str(e))
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def restore_backup(self, source=None, appvm=None):
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if source is None:
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backupfile = os.path.join(self.backupdir,
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sorted(os.listdir(self.backupdir))[-1])
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else:
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backupfile = source
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try:
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backup_info = backup.backup_restore_prepare(
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backupfile, "qubes", print_callback=self.print_callback,
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appvm=appvm)
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except QubesException as e: self.fail(
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"QubesException during backup_restore_prepare: %s" % str(e))
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if self.verbose:
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backup.backup_restore_print_summary(backup_info)
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try:
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backup.backup_restore_do(
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backup_info,
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print_callback=self.print_callback if self.verbose else None,
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error_callback=self.error_callback)
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except QubesException as e:
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self.fail("QubesException during backup_restore_do: %s" % str(e))
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errors = []
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while not self.error_detected.empty():
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errors.append(self.error_detected.get())
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self.assertTrue(len(errors) == 0,
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"Error(s) detected during backup_restore_do: %s" %
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'\n'.join(errors))
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if not appvm:
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os.unlink(backupfile)
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def test_basic_backup(self):
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vms = self.create_basic_vms()
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self.make_backup(vms)
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self.remove_vms(vms)
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self.restore_backup()
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self.remove_vms(vms)
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def test_compressed_backup(self):
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vms = self.create_basic_vms()
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self.make_backup(vms, do_kwargs={'compressed': True})
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self.remove_vms(vms)
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self.restore_backup()
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self.remove_vms(vms)
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def test_encrypted_backup(self):
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vms = self.create_basic_vms()
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self.make_backup(vms, do_kwargs={'encrypted': True})
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self.remove_vms(vms)
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self.restore_backup()
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self.remove_vms(vms)
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def test_compressed_encrypted_backup(self):
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vms = self.create_basic_vms()
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self.make_backup(vms,
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do_kwargs={
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'compressed': True,
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'encrypted': True})
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self.remove_vms(vms)
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self.restore_backup()
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self.remove_vms(vms)
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def test_send_to_vm(self):
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vms = self.create_basic_vms()
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self.backupvm.start()
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self.make_backup(vms,
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do_kwargs={
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'appvm': self.backupvm,
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'compressed': True,
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'encrypted': True},
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target='dd of=/var/tmp/backup-test')
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self.remove_vms(vms)
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self.restore_backup(source='dd if=/var/tmp/backup-test',
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appvm=self.backupvm)
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self.remove_vms(vms)
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def test_sparse_multipart(self):
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vms = []
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self.qc.lock_db_for_writing()
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self.qc.load()
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vmname = "%stesthvm2" % VM_PREFIX
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if self.verbose:
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print >>sys.stderr, "-> Creating %s" % vmname
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hvmtemplate = self.qc.add_new_vm("QubesTemplateHVm",
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name=vmname)
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hvmtemplate.create_on_disk(verbose=self.verbose)
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self.fill_image(os.path.join(hvmtemplate.dir_path, '00file'),
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195*1024*1024-4096*3)
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self.fill_image(hvmtemplate.private_img, 195*1024*1024-4096*3)
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self.fill_image(hvmtemplate.root_img, 1024*1024*1024, sparse=True)
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vms.append(hvmtemplate)
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self.qc.save()
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self.qc.unlock_db()
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self.make_backup(vms)
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self.remove_vms(vms)
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self.restore_backup()
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self.remove_vms(vms)
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