260 lines
10 KiB
Python
260 lines
10 KiB
Python
#
|
|
# The Qubes OS Project, http://www.qubes-os.org
|
|
#
|
|
# Copyright (C) 2016 Marek Marczykowski-Górecki
|
|
# <marmarek@invisiblethingslab.com>
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License along
|
|
# with this program; if not, write to the Free Software Foundation, Inc.,
|
|
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
from __future__ import print_function
|
|
|
|
import getpass
|
|
import locale
|
|
import sys
|
|
|
|
import qubes.backup
|
|
import qubes.tools
|
|
import qubes.utils
|
|
|
|
parser = qubes.tools.QubesArgumentParser(want_force_root=True)
|
|
|
|
parser.add_argument("--verify-only", action="store_true",
|
|
dest="verify_only", default=False,
|
|
help="Verify backup integrity without restoring any "
|
|
"data")
|
|
|
|
parser.add_argument("--skip-broken", action="store_true", dest="skip_broken",
|
|
default=False,
|
|
help="Do not restore VMs that have missing TemplateVMs "
|
|
"or NetVMs")
|
|
|
|
parser.add_argument("--ignore-missing", action="store_true",
|
|
dest="ignore_missing", default=False,
|
|
help="Restore VMs even if their associated TemplateVMs "
|
|
"and NetVMs are missing")
|
|
|
|
parser.add_argument("--skip-conflicting", action="store_true",
|
|
dest="skip_conflicting", default=False,
|
|
help="Do not restore VMs that are already present on "
|
|
"the host")
|
|
|
|
parser.add_argument("--rename-conflicting", action="store_true",
|
|
dest="rename_conflicting", default=False,
|
|
help="Restore VMs that are already present on the host "
|
|
"under different names")
|
|
|
|
parser.add_argument("--replace-template", action="append",
|
|
dest="replace_template", default=[],
|
|
help="Restore VMs using another TemplateVM; syntax: "
|
|
"old-template-name:new-template-name (may be "
|
|
"repeated)")
|
|
|
|
parser.add_argument("-x", "--exclude", action="append", dest="exclude",
|
|
default=[],
|
|
help="Skip restore of specified VM (may be repeated)")
|
|
|
|
parser.add_argument("--skip-dom0-home", action="store_false", dest="dom0_home",
|
|
default=True,
|
|
help="Do not restore dom0 user home directory")
|
|
|
|
parser.add_argument("--ignore-username-mismatch", action="store_true",
|
|
dest="ignore_username_mismatch", default=False,
|
|
help="Ignore dom0 username mismatch when restoring home "
|
|
"directory")
|
|
|
|
parser.add_argument("-d", "--dest-vm", action="store", dest="appvm",
|
|
help="Specify VM containing the backup to be restored")
|
|
|
|
parser.add_argument("-p", "--passphrase-file", action="store",
|
|
dest="pass_file", default=None,
|
|
help="Read passphrase from file, or use '-' to read from stdin")
|
|
|
|
parser.add_argument('backup_location', action='store',
|
|
help="Backup directory name, or command to pipe from")
|
|
|
|
parser.add_argument('vms', nargs='*', action='store', default='[]',
|
|
help='Restore only those VMs')
|
|
|
|
|
|
def handle_broken(app, args, restore_info):
|
|
there_are_conflicting_vms = False
|
|
there_are_missing_templates = False
|
|
there_are_missing_netvms = False
|
|
dom0_username_mismatch = False
|
|
|
|
for vm_info in restore_info.values():
|
|
assert isinstance(vm_info, qubes.backup.BackupRestore.VMToRestore)
|
|
if qubes.backup.BackupRestore.VMToRestore.EXCLUDED in vm_info.problems:
|
|
continue
|
|
if qubes.backup.BackupRestore.VMToRestore.MISSING_TEMPLATE in \
|
|
vm_info.problems:
|
|
there_are_missing_templates = True
|
|
if qubes.backup.BackupRestore.VMToRestore.MISSING_NETVM in \
|
|
vm_info.problems:
|
|
there_are_missing_netvms = True
|
|
if qubes.backup.BackupRestore.VMToRestore.ALREADY_EXISTS in \
|
|
vm_info.problems:
|
|
there_are_conflicting_vms = True
|
|
if qubes.backup.BackupRestore.Dom0ToRestore.USERNAME_MISMATCH in \
|
|
vm_info.problems:
|
|
dom0_username_mismatch = True
|
|
|
|
|
|
if there_are_conflicting_vms:
|
|
app.log.error(
|
|
"*** There are VMs with conflicting names on the host! ***")
|
|
if args.skip_conflicting:
|
|
app.log.error(
|
|
"Those VMs will not be restored. "
|
|
"The host VMs will NOT be overwritten.")
|
|
else:
|
|
raise qubes.exc.QubesException(
|
|
"Remove VMs with conflicting names from the host "
|
|
"before proceeding.\n"
|
|
"Or use --skip-conflicting to restore only those VMs that "
|
|
"do not exist on the host.\n"
|
|
"Or use --rename-conflicting to restore those VMs under "
|
|
"modified names (with numbers at the end).")
|
|
|
|
app.log.info("The above VMs will be copied and added to your system.")
|
|
app.log.info("Exisiting VMs will NOT be removed.")
|
|
|
|
if there_are_missing_templates:
|
|
app.log.warning("*** One or more TemplateVMs are missing on the "
|
|
"host! ***")
|
|
if not (args.skip_broken or args.ignore_missing):
|
|
raise qubes.exc.QubesException(
|
|
"Install them before proceeding with the restore."
|
|
"Or pass: --skip-broken or --ignore-missing.")
|
|
elif args.skip_broken:
|
|
app.log.warning("Skipping broken entries: VMs that depend on "
|
|
"missing TemplateVMs will NOT be restored.")
|
|
elif args.ignore_missing:
|
|
app.log.warning("Ignoring missing entries: VMs that depend "
|
|
"on missing TemplateVMs will NOT be restored.")
|
|
else:
|
|
raise qubes.exc.QubesException(
|
|
"INTERNAL ERROR! Please report this to the Qubes OS team!")
|
|
|
|
if there_are_missing_netvms:
|
|
app.log.warning("*** One or more NetVMs are missing on the "
|
|
"host! ***")
|
|
if not (args.skip_broken or args.ignore_missing):
|
|
raise qubes.exc.QubesException(
|
|
"Install them before proceeding with the restore."
|
|
"Or pass: --skip-broken or --ignore-missing.")
|
|
elif args.skip_broken:
|
|
app.log.warning("Skipping broken entries: VMs that depend on "
|
|
"missing NetVMs will NOT be restored.")
|
|
elif args.ignore_missing:
|
|
app.log.warning("Ignoring missing entries: VMs that depend "
|
|
"on missing NetVMs will NOT be restored.")
|
|
else:
|
|
raise qubes.exc.QubesException(
|
|
"INTERNAL ERROR! Please report this to the Qubes OS team!")
|
|
|
|
if 'dom0' in restore_info.keys() and args.dom0_home:
|
|
if dom0_username_mismatch:
|
|
app.log.warning("*** Dom0 username mismatch! This can break "
|
|
"some settings! ***")
|
|
if not args.ignore_username_mismatch:
|
|
raise qubes.exc.QubesException(
|
|
"Skip restoring the dom0 home directory "
|
|
"(--skip-dom0-home), or pass "
|
|
"--ignore-username-mismatch to continue anyway.")
|
|
else:
|
|
app.log.warning("Continuing as directed.")
|
|
app.log.warning("NOTE: Before restoring the dom0 home directory, "
|
|
"a new directory named "
|
|
"'home-pre-restore-<current-time>' will be "
|
|
"created inside the dom0 home directory. If any "
|
|
"restored files conflict with existing files, "
|
|
"the existing files will be moved to this new "
|
|
"directory.")
|
|
|
|
def main(args=None):
|
|
# pylint: disable=too-many-return-statements
|
|
args = parser.parse_args(args)
|
|
|
|
appvm = None
|
|
if args.appvm:
|
|
try:
|
|
appvm = args.app.domains[args.appvm]
|
|
except KeyError:
|
|
parser.error('no such domain: {!r}'.format(args.appvm))
|
|
|
|
if args.pass_file is not None:
|
|
pass_f = open(args.pass_file) if args.pass_file != "-" else sys.stdin
|
|
passphrase = pass_f.readline().rstrip()
|
|
if pass_f is not sys.stdin:
|
|
pass_f.close()
|
|
else:
|
|
passphrase = getpass.getpass("Please enter the passphrase to verify "
|
|
"and (if encrypted) decrypt the backup: ")
|
|
|
|
encoding = sys.stdin.encoding or locale.getpreferredencoding()
|
|
# pylint: disable=redefined-variable-type
|
|
passphrase = passphrase.decode(encoding)
|
|
|
|
args.app.log.info("Checking backup content...")
|
|
|
|
try:
|
|
backup = qubes.backup.BackupRestore(args.app, args.backup_location,
|
|
appvm, passphrase)
|
|
except qubes.exc.QubesException as e:
|
|
parser.error_runtime(str(e))
|
|
# unreachable - error_runtime will raise SystemExit
|
|
return 1
|
|
|
|
if args.ignore_missing:
|
|
backup.options.use_default_template = True
|
|
backup.options.use_default_netvm = True
|
|
if args.replace_template:
|
|
backup.options.replace_template = args.replace_template
|
|
if args.rename_conflicting:
|
|
backup.options.rename_conflicting = True
|
|
if not args.dom0_home:
|
|
backup.options.dom0_home = False
|
|
if args.ignore_username_mismatch:
|
|
backup.options.ignore_username_mismatch = True
|
|
if args.exclude:
|
|
backup.options.exclude = args.exclude
|
|
if args.verify_only:
|
|
backup.options.verify_only = True
|
|
|
|
restore_info = None
|
|
try:
|
|
restore_info = backup.get_restore_info()
|
|
except qubes.exc.QubesException as e:
|
|
parser.error_runtime(str(e))
|
|
|
|
print(backup.get_restore_summary(restore_info))
|
|
|
|
try:
|
|
handle_broken(args.app, args, restore_info)
|
|
except qubes.exc.QubesException as e:
|
|
parser.error_runtime(str(e))
|
|
|
|
if args.pass_file is None:
|
|
if input("Do you want to proceed? [y/N] ").upper() != "Y":
|
|
exit(0)
|
|
|
|
try:
|
|
backup.restore_do(restore_info)
|
|
except qubes.exc.QubesException as e:
|
|
parser.error_runtime(str(e))
|
|
|
|
if __name__ == '__main__':
|
|
main()
|