8dab298b89
If QUBES_TEST_TEMPLATES or QUBES_TEST_LOAD_ALL is set, create testcases on modules import, instead of waiting until `load_tests` is called. The `QUBES_TEST_TEMPLATES` doesn't require `qubes.xml` access, so it should be safe to do regardless of the environment. The `QUBES_TEST_LOAD_ALL` force loading tests (and reading `qubes.xml`) regardless. This is useful for test runners not supporting load_tests protocol. Or with limited support - for example both default `unittest` runner and `nose2` can either use load_tests protocol _or_ select individual tests. Setting any of those variable allow to run a single test with those runners. With this feature used together load_tests protocol, tests could be registered twice. Avoid this by not listing already defined test classes in create_testcases_for_templates (according to load_tests protocol, those should already be registered).
655 lines
25 KiB
Python
655 lines
25 KiB
Python
#
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# The Qubes OS Project, https://www.qubes-os.org/
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#
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# Copyright (C) 2014-2015
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# Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
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# Copyright (C) 2015 Wojtek Porczyk <woju@invisiblethingslab.com>
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library 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 GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, see <https://www.gnu.org/licenses/>.
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#
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import hashlib
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import logging
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import multiprocessing
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import os
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import shutil
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import sys
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import asyncio
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import qubes
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import qubes.backup
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import qubes.exc
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import qubes.storage.lvm
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import qubes.tests
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import qubes.tests.storage_lvm
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import qubes.vm
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import qubes.vm.appvm
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import qubes.vm.templatevm
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import qubes.vm.qubesvm
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try:
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import qubesadmin.backup.restore
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import qubesadmin.exc
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restore_available = True
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except ImportError:
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restore_available = False
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# noinspection PyAttributeOutsideInit
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class BackupTestsMixin(object):
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class BackupErrorHandler(logging.Handler):
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def __init__(self, errors_queue, level=logging.NOTSET):
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super(BackupTestsMixin.BackupErrorHandler, self).__init__(level)
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self.errors_queue = errors_queue
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def emit(self, record):
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self.errors_queue.put(record.getMessage())
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def setUp(self):
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super(BackupTestsMixin, self).setUp()
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try:
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self.init_default_template(self.template)
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except AttributeError:
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self.init_default_template()
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self.error_detected = multiprocessing.Queue()
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self.log.debug("Creating backupvm")
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self.backupdir = os.path.join(os.environ["HOME"], "test-backup")
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if os.path.exists(self.backupdir):
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shutil.rmtree(self.backupdir)
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os.mkdir(self.backupdir)
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self.error_handler = self.BackupErrorHandler(self.error_detected,
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level=logging.WARNING)
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backup_log = logging.getLogger('qubesadmin.backup')
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backup_log.addHandler(self.error_handler)
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def tearDown(self):
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shutil.rmtree(self.backupdir)
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backup_log = logging.getLogger('qubes.backup')
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backup_log.removeHandler(self.error_handler)
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super(BackupTestsMixin, self).tearDown()
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def fill_image(self, path, size=None, sparse=False):
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block_size = 4096
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self.log.debug("Filling %s" % path)
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try:
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f = open(path, 'rb+')
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except FileNotFoundError:
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f = open(path, 'wb+')
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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 range(int(size/block_size)):
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if sparse:
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f.seek(block_size, 1)
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f.write(b'a' * block_size)
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f.close()
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# NOTE: this was create_basic_vms
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def create_backup_vms(self, pool=None):
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template = self.app.default_template
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vms = []
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vmname = self.make_vm_name('test-net')
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self.log.debug("Creating %s" % vmname)
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testnet = self.app.add_new_vm(qubes.vm.appvm.AppVM,
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name=vmname, template=template, provides_network=True,
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label='red')
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self.loop.run_until_complete(
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testnet.create_on_disk(pool=pool))
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testnet.features['service.ntpd'] = True
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vms.append(testnet)
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self.fill_image(testnet.storage.export('private'), 20*1024*1024)
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vmname = self.make_vm_name('test1')
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self.log.debug("Creating %s" % vmname)
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testvm1 = self.app.add_new_vm(qubes.vm.appvm.AppVM,
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name=vmname, template=template, label='red')
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testvm1.netvm = testnet
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self.loop.run_until_complete(
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testvm1.create_on_disk(pool=pool))
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vms.append(testvm1)
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self.fill_image(testvm1.storage.export('private'), 100 * 1024 * 1024)
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vmname = self.make_vm_name('testhvm1')
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self.log.debug("Creating %s" % vmname)
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testvm2 = self.app.add_new_vm(qubes.vm.standalonevm.StandaloneVM,
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name=vmname,
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virt_mode='hvm',
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label='red')
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self.loop.run_until_complete(
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testvm2.create_on_disk(pool=pool))
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self.fill_image(testvm2.storage.export('root'), 1024 * 1024 * 1024, \
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True)
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vms.append(testvm2)
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vmname = self.make_vm_name('template')
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self.log.debug("Creating %s" % vmname)
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testvm3 = self.app.add_new_vm(qubes.vm.templatevm.TemplateVM,
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name=vmname, label='red')
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self.loop.run_until_complete(
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testvm3.create_on_disk(pool=pool))
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self.fill_image(testvm3.storage.export('root'), 100 * 1024 * 1024, True)
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vms.append(testvm3)
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vmname = self.make_vm_name('custom')
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self.log.debug("Creating %s" % vmname)
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testvm4 = self.app.add_new_vm(qubes.vm.appvm.AppVM,
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name=vmname, template=testvm3, label='red')
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self.loop.run_until_complete(
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testvm4.create_on_disk(pool=pool))
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vms.append(testvm4)
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self.app.save()
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return vms
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def make_backup(self, vms, target=None, expect_failure=False, **kwargs):
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if target is None:
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target = self.backupdir
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try:
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backup = qubes.backup.Backup(self.app, vms, **kwargs)
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except qubes.exc.QubesException as e:
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if not expect_failure:
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self.fail("QubesException during backup_prepare: %s" % str(e))
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else:
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raise
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if 'passphrase' not in kwargs:
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backup.passphrase = 'qubes'
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backup.target_dir = target
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try:
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self.loop.run_until_complete(backup.backup_do())
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except qubes.exc.QubesException as e:
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if not expect_failure:
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self.fail("QubesException during backup_do: %s" % str(e))
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else:
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raise
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def remove_vms(self, vms):
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vms = list(vms)
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for vm in vms:
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vm.netvm = None
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vm.default_dispvm = None
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super(BackupTestsMixin, self).remove_vms(vms)
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def restore_backup(self, source=None, appvm=None, options=None,
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expect_errors=None, manipulate_restore_info=None,
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passphrase='qubes'):
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if not restore_available:
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self.skipTest('qubesadmin module not available')
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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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client_app = qubesadmin.Qubes()
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if appvm:
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appvm = self.loop.run_until_complete(
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self.loop.run_in_executor(None,
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client_app.domains.__getitem__, appvm.name))
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with self.assertNotRaises(qubesadmin.exc.QubesException):
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restore_op = self.loop.run_until_complete(
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self.loop.run_in_executor(None,
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qubesadmin.backup.restore.BackupRestore,
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client_app, backupfile, appvm, passphrase))
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if options:
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for key, value in options.items():
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setattr(restore_op.options, key, value)
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restore_info = self.loop.run_until_complete(
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self.loop.run_in_executor(None,
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restore_op.get_restore_info))
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if callable(manipulate_restore_info):
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restore_info = manipulate_restore_info(restore_info)
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self.log.debug(restore_op.get_restore_summary(restore_info))
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with self.assertNotRaises(qubesadmin.exc.QubesException):
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self.loop.run_until_complete(
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self.loop.run_in_executor(None,
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restore_op.restore_do, restore_info))
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errors = []
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if expect_errors is None:
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expect_errors = []
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else:
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self.assertFalse(self.error_detected.empty(),
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"Restore errors expected, but none detected")
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while not self.error_detected.empty():
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current_error = self.error_detected.get()
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if any(map(current_error.startswith, expect_errors)):
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continue
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errors.append(current_error)
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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 and not os.path.isdir(backupfile):
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os.unlink(backupfile)
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def create_sparse(self, path, size):
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f = open(path, "w")
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f.truncate(size)
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f.close()
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def vm_checksum(self, vms):
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hashes = {}
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for vm in vms:
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assert isinstance(vm, qubes.vm.qubesvm.QubesVM)
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hashes[vm.name] = {}
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for name, volume in vm.volumes.items():
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if not volume.rw or not volume.save_on_stop:
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continue
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vol_path = volume.export()
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hasher = hashlib.sha1()
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with open(vol_path, 'rb') as afile:
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for buf in iter(lambda: afile.read(4096000), b''):
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hasher.update(buf)
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hashes[vm.name][name] = hasher.hexdigest()
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return hashes
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def get_vms_info(self, vms):
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''' Get VM metadata, for comparing VM later without holding actual
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reference to the old object.'''
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vms_info = {}
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for vm in vms:
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vm_info = {
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'properties': {},
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'default': {},
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'devices': {},
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}
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for prop in ('name', 'kernel',
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'memory', 'maxmem', 'kernelopts',
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'services', 'vcpus', 'features'
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'include_in_backups', 'default_user', 'qrexec_timeout',
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'autostart', 'pci_strictreset', 'debug',
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'internal', 'netvm', 'template', 'label'):
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if not hasattr(vm, prop):
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continue
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vm_info['properties'][prop] = str(getattr(vm, prop))
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vm_info['default'][prop] = vm.property_is_default(prop)
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for dev_class in vm.devices.keys():
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vm_info['devices'][dev_class] = {}
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for dev_ass in vm.devices[dev_class].assignments():
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vm_info['devices'][dev_class][str(dev_ass.device)] = \
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dev_ass.options
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vms_info[vm.name] = vm_info
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return vms_info
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def assertCorrectlyRestored(self, vms_info, orig_hashes):
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''' Verify if restored VMs are identical to those before backup.
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:param orig_vms: collection of original QubesVM objects
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:param orig_hashes: result of :py:meth:`vm_checksum` on original VMs,
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before backup
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:return:
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'''
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for vm_name in vms_info:
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vm_info = vms_info[vm_name]
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self.assertIn(vm_name, self.app.domains)
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restored_vm = self.app.domains[vm_name]
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for prop in vm_info['properties']:
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self.assertEqual(
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vm_info['properties'][prop],
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str(getattr(restored_vm, prop)),
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"VM {} - property {} not properly restored".format(
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vm_name, prop))
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self.assertEqual(
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vm_info['default'][prop],
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restored_vm.property_is_default(prop),
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"VM {} - property {} differs in being default".format(
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vm_name, prop))
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for dev_class in vm_info['devices']:
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for dev in vm_info['devices'][dev_class]:
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found = False
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for restored_dev_ass in restored_vm.devices[
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dev_class].assignments():
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if str(restored_dev_ass.device) == dev:
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found = True
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self.assertEqual(vm_info['devices'][dev_class][dev],
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restored_dev_ass.options,
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'VM {} - {} device {} options mismatch'.format(
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vm_name, dev_class, str(dev)))
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self.assertTrue(found,
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'VM {} - {} device {} not restored'.format(
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vm_name, dev_class, dev))
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if orig_hashes:
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hashes = self.vm_checksum([restored_vm])[restored_vm.name]
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self.assertEqual(orig_hashes[vm_name], hashes,
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"VM {} - disk images are not properly restored".format(
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vm_name))
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class TC_00_Backup(BackupTestsMixin, qubes.tests.SystemTestCase):
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def test_000_basic_backup(self):
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vms = self.create_backup_vms()
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try:
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orig_hashes = self.vm_checksum(vms)
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vms_info = self.get_vms_info(vms)
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self.make_backup(vms)
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self.remove_vms(reversed(vms))
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finally:
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del vms
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self.restore_backup()
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self.assertCorrectlyRestored(vms_info, orig_hashes)
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def test_001_compressed_backup(self):
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vms = self.create_backup_vms()
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try:
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orig_hashes = self.vm_checksum(vms)
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vms_info = self.get_vms_info(vms)
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self.make_backup(vms, compressed=True)
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self.remove_vms(reversed(vms))
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finally:
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del vms
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self.restore_backup()
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self.assertCorrectlyRestored(vms_info, orig_hashes)
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def test_004_sparse_multipart(self):
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vms = []
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try:
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vmname = self.make_vm_name('testhvm2')
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self.log.debug("Creating %s" % vmname)
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self.hvmtemplate = self.app.add_new_vm(
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qubes.vm.templatevm.TemplateVM, name=vmname, virt_mode='hvm', label='red')
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self.loop.run_until_complete(self.hvmtemplate.create_on_disk())
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self.fill_image(
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os.path.join(self.hvmtemplate.dir_path, '00file'),
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195 * 1024 * 1024 - 4096 * 3)
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self.fill_image(self.hvmtemplate.storage.export('private'),
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195 * 1024 * 1024 - 4096 * 3)
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self.fill_image(self.hvmtemplate.storage.export('root'), 1024 * 1024 * 1024,
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sparse=True)
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vms.append(self.hvmtemplate)
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self.app.save()
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orig_hashes = self.vm_checksum(vms)
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vms_info = self.get_vms_info(vms)
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self.make_backup(vms)
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self.remove_vms(reversed(vms))
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self.restore_backup()
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self.assertCorrectlyRestored(vms_info, orig_hashes)
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# TODO check vm.backup_timestamp
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finally:
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del vms
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def test_005_compressed_custom(self):
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vms = self.create_backup_vms()
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try:
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orig_hashes = self.vm_checksum(vms)
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vms_info = self.get_vms_info(vms)
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self.make_backup(vms, compression_filter="bzip2")
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self.remove_vms(reversed(vms))
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self.restore_backup()
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self.assertCorrectlyRestored(vms_info, orig_hashes)
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finally:
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del vms
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def test_010_selective_restore(self):
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# create backup with internal dependencies (template, netvm etc)
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# try restoring only AppVMs (but not templates, netvms) - should
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# handle according to options set
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exclude = [
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self.make_vm_name('test-net'),
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self.make_vm_name('template')
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]
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def exclude_some(restore_info):
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for name in exclude:
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restore_info.pop(name)
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return restore_info
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vms = self.create_backup_vms()
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try:
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orig_hashes = self.vm_checksum(vms)
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vms_info = self.get_vms_info(vms)
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self.make_backup(vms, compression_filter="bzip2")
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self.remove_vms(reversed(vms))
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self.restore_backup(manipulate_restore_info=exclude_some)
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for vm_name in vms_info:
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if vm_name == self.make_vm_name('test1'):
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# netvm was set to 'test-inst-test-net' - excluded
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vms_info[vm_name]['properties']['netvm'] = \
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str(self.app.default_netvm)
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vms_info[vm_name]['default']['netvm'] = True
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elif vm_name == self.make_vm_name('custom'):
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# template was set to 'test-inst-template' - excluded
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vms_info[vm_name]['properties']['template'] = \
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str(self.app.default_template)
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for excluded in exclude:
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vms_info.pop(excluded, None)
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self.assertCorrectlyRestored(vms_info, orig_hashes)
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finally:
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del vms
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def test_020_encrypted_backup_non_ascii(self):
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vms = self.create_backup_vms()
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try:
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orig_hashes = self.vm_checksum(vms)
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vms_info = self.get_vms_info(vms)
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self.make_backup(vms, passphrase=u'zażółć gęślą jaźń')
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self.remove_vms(reversed(vms))
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self.restore_backup(passphrase=u'zażółć gęślą jaźń')
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self.assertCorrectlyRestored(vms_info, orig_hashes)
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finally:
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del vms
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def test_100_backup_dom0_no_restore(self):
|
|
# do not write it into dom0 home itself...
|
|
os.mkdir('/var/tmp/test-backup')
|
|
self.backupdir = '/var/tmp/test-backup'
|
|
self.make_backup([self.app.domains[0]])
|
|
# TODO: think of some safe way to test restore...
|
|
|
|
def test_200_restore_over_existing_directory(self):
|
|
"""
|
|
Regression test for #1386
|
|
:return:
|
|
"""
|
|
vms = self.create_backup_vms()
|
|
try:
|
|
orig_hashes = self.vm_checksum(vms)
|
|
vms_info = self.get_vms_info(vms)
|
|
self.make_backup(vms)
|
|
test_dir = vms[0].dir_path
|
|
self.remove_vms(reversed(vms))
|
|
os.mkdir(test_dir)
|
|
with open(os.path.join(test_dir, 'some-file.txt'), 'w') as f:
|
|
f.write('test file\n')
|
|
self.restore_backup()
|
|
self.assertCorrectlyRestored(vms_info, orig_hashes)
|
|
finally:
|
|
del vms
|
|
|
|
def test_210_auto_rename(self):
|
|
"""
|
|
Test for #869
|
|
:return:
|
|
"""
|
|
vms = self.create_backup_vms()
|
|
vms_info = self.get_vms_info(vms)
|
|
try:
|
|
self.make_backup(vms)
|
|
self.restore_backup(options={
|
|
'rename_conflicting': True
|
|
})
|
|
for vm_name in vms_info:
|
|
with self.assertNotRaises(
|
|
(qubes.exc.QubesVMNotFoundError, KeyError)):
|
|
restored_vm = self.app.domains[vm_name + '1']
|
|
if vms_info[vm_name]['properties']['netvm'] and \
|
|
not vms_info[vm_name]['default']['netvm']:
|
|
self.assertEqual(restored_vm.netvm.name,
|
|
vms_info[vm_name]['properties']['netvm'] + '1')
|
|
finally:
|
|
del vms
|
|
|
|
def _find_pool(self, volume_group, thin_pool):
|
|
''' Returns the pool matching the specified ``volume_group`` &
|
|
``thin_pool``, or None.
|
|
'''
|
|
pools = [p for p in self.app.pools
|
|
if issubclass(p.__class__, qubes.storage.lvm.ThinPool)]
|
|
for pool in pools:
|
|
if pool.volume_group == volume_group \
|
|
and pool.thin_pool == thin_pool:
|
|
return pool
|
|
return None
|
|
|
|
@qubes.tests.storage_lvm.skipUnlessLvmPoolExists
|
|
def test_300_backup_lvm(self):
|
|
volume_group, thin_pool = \
|
|
qubes.tests.storage_lvm.DEFAULT_LVM_POOL.split('/', 1)
|
|
self.pool = self._find_pool(volume_group, thin_pool)
|
|
if not self.pool:
|
|
self.pool = self.app.add_pool(
|
|
**qubes.tests.storage_lvm.POOL_CONF)
|
|
self.created_pool = True
|
|
vms = self.create_backup_vms(pool=self.pool)
|
|
try:
|
|
orig_hashes = self.vm_checksum(vms)
|
|
vms_info = self.get_vms_info(vms)
|
|
self.make_backup(vms)
|
|
self.remove_vms(reversed(vms))
|
|
self.restore_backup()
|
|
self.assertCorrectlyRestored(vms_info, orig_hashes)
|
|
finally:
|
|
del vms
|
|
|
|
@qubes.tests.storage_lvm.skipUnlessLvmPoolExists
|
|
def test_301_restore_to_lvm(self):
|
|
volume_group, thin_pool = \
|
|
qubes.tests.storage_lvm.DEFAULT_LVM_POOL.split('/', 1)
|
|
self.pool = self._find_pool(volume_group, thin_pool)
|
|
if not self.pool:
|
|
self.pool = self.app.add_pool(
|
|
**qubes.tests.storage_lvm.POOL_CONF)
|
|
self.created_pool = True
|
|
vms = self.create_backup_vms()
|
|
try:
|
|
orig_hashes = self.vm_checksum(vms)
|
|
vms_info = self.get_vms_info(vms)
|
|
self.make_backup(vms)
|
|
self.remove_vms(reversed(vms))
|
|
self.restore_backup(options={'override_pool': self.pool.name})
|
|
self.assertCorrectlyRestored(vms_info, orig_hashes)
|
|
for vm_name in vms_info:
|
|
vm = self.app.domains[vm_name]
|
|
for volume in vm.volumes.values():
|
|
if volume.save_on_stop:
|
|
self.assertEqual(volume.pool, self.pool.name)
|
|
finally:
|
|
del vms
|
|
|
|
|
|
class TC_10_BackupVMMixin(BackupTestsMixin):
|
|
def setUp(self):
|
|
super(TC_10_BackupVMMixin, self).setUp()
|
|
self.backupvm = self.app.add_new_vm(
|
|
qubes.vm.appvm.AppVM,
|
|
label='red',
|
|
name=self.make_vm_name('backupvm'),
|
|
template=self.template
|
|
)
|
|
self.loop.run_until_complete(self.backupvm.create_on_disk())
|
|
|
|
def test_100_send_to_vm_file_with_spaces(self):
|
|
vms = self.create_backup_vms()
|
|
orig_hashes = self.vm_checksum(vms)
|
|
vms_info = self.get_vms_info(vms)
|
|
try:
|
|
self.loop.run_until_complete(self.backupvm.start())
|
|
self.loop.run_until_complete(self.backupvm.run_for_stdio(
|
|
"mkdir '/var/tmp/backup directory'"))
|
|
self.make_backup(vms, target_vm=self.backupvm,
|
|
compressed=True,
|
|
target='/var/tmp/backup directory')
|
|
self.remove_vms(reversed(vms))
|
|
(backup_path, _) = self.loop.run_until_complete(
|
|
self.backupvm.run_for_stdio("ls /var/tmp/backup*/qubes-backup*"))
|
|
backup_path = backup_path.decode().strip()
|
|
self.restore_backup(source=backup_path,
|
|
appvm=self.backupvm)
|
|
self.assertCorrectlyRestored(vms_info, orig_hashes)
|
|
finally:
|
|
del vms
|
|
|
|
def test_110_send_to_vm_command(self):
|
|
vms = self.create_backup_vms()
|
|
orig_hashes = self.vm_checksum(vms)
|
|
vms_info = self.get_vms_info(vms)
|
|
try:
|
|
self.loop.run_until_complete(self.backupvm.start())
|
|
self.make_backup(vms, target_vm=self.backupvm,
|
|
compressed=True,
|
|
target='dd of=/var/tmp/backup-test')
|
|
self.remove_vms(reversed(vms))
|
|
self.restore_backup(source='dd if=/var/tmp/backup-test',
|
|
appvm=self.backupvm)
|
|
self.assertCorrectlyRestored(vms_info, orig_hashes)
|
|
finally:
|
|
del vms
|
|
|
|
def test_110_send_to_vm_no_space(self):
|
|
"""
|
|
Check whether backup properly report failure when no enough space is
|
|
available
|
|
:return:
|
|
"""
|
|
vms = self.create_backup_vms()
|
|
try:
|
|
self.loop.run_until_complete(self.backupvm.start())
|
|
self.loop.run_until_complete(self.backupvm.run_for_stdio(
|
|
# Debian 7 has too old losetup to handle loop-control device
|
|
"mknod /dev/loop0 b 7 0;"
|
|
"truncate -s 50M /home/user/backup.img && "
|
|
"mkfs.ext4 -F /home/user/backup.img && "
|
|
"mkdir /home/user/backup && "
|
|
"mount /home/user/backup.img /home/user/backup -o loop &&"
|
|
"chmod 777 /home/user/backup",
|
|
user="root"))
|
|
with self.assertRaises(qubes.exc.QubesException):
|
|
self.make_backup(vms, target_vm=self.backupvm,
|
|
compressed=False,
|
|
target='/home/user/backup',
|
|
expect_failure=True)
|
|
finally:
|
|
del vms
|
|
|
|
|
|
def create_testcases_for_templates():
|
|
return qubes.tests.create_testcases_for_templates('TC_10_BackupVM',
|
|
TC_10_BackupVMMixin, qubes.tests.SystemTestCase,
|
|
module=sys.modules[__name__])
|
|
|
|
def load_tests(loader, tests, pattern):
|
|
tests.addTests(loader.loadTestsFromNames(
|
|
create_testcases_for_templates()))
|
|
return tests
|
|
|
|
qubes.tests.maybe_create_testcases_on_import(create_testcases_for_templates)
|