core-admin/dom0/restore/qfile-daemon
Marek Marczykowski d9d7a69c27 dom0+vm: Tools for downloading dom0 update by VM (#198)
Mainly 4 parts:
 - scripts for providing rpmdb and yum repos to VM (choosen by qvm-set-updatevm)
 - VM script for downloading updates (qubes_download_dom0_updates.sh)
 - qfile-dom0-unpacker which receive updates, check signatures and place its in dom0 local yum repo
 - qvm-dom0-upgrade which calls all of above and after all yum gpk-update-viewer

Besides qvm-dom0-upgrade, updates are checked every 6h and user is prompted if
want to download it. At dom0 side gpk-update-icon (disabled yet) should notice
new updates in "local" repo.
2011-06-22 00:44:48 +02:00

100 lines
3.6 KiB
Python
Executable File

#!/usr/bin/python2.6
#
# The Qubes OS Project, http://www.qubes-os.org
#
# Copyright (C) 2010 Rafal Wojtczuk <rafal@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.
#
#
import os
import sys
import subprocess
import shutil
import glob
from qubes.qubes import QubesVmCollection
updates_dir = "/var/lib/qubes/updates"
updates_rpm_dir = updates_dir + "/rpm"
def is_copy_allowed(vm):
# if vm.copy_allowed:
# return True
q = 'Do you authorize file copy from '
q+= os.getenv("QREXEC_REMOTE_DOMAIN")
q+= ' to ' + vm.name + ' ?'
retcode = subprocess.call(['/usr/bin/kdialog', '--yesno', q, '--title', 'File transfer confirmation'])
return retcode == 0
def dom0updates_fatal(msg):
print >> sys.stderr, msg
shutil.rmtree(updates_rpm_dir)
exit(1)
def handle_dom0updates(updatevm):
source=os.getenv("QREXEC_REMOTE_DOMAIN")
if source != updatevm.name:
print >> sys.stderr, 'Domain ' + source + ' not allowed to send dom0 updates'
exit(1)
# Clean old packages
if os.path.exists(updates_rpm_dir):
shutil.rmtree(updates_rpm_dir)
subprocess.check_call(["/usr/lib/qubes/qfile-dom0-unpacker", os.getlogin(), updates_rpm_dir])
# Verify received files
for f in os.listdir(updates_rpm_dir):
if glob.fnmatch.fnmatch(f, "*.rpm"):
p = subprocess.Popen (["/bin/rpm", "-K", updates_rpm_dir + "/" + f],
stdout=subprocess.PIPE)
output = p.communicate()[0]
if p.returncode != 0:
dom0updates_fatal('Error while verifing %s signature: %s' % (f, output))
if output.find("pgp") < 0:
dom0updates_fatal('Domain ' + source + ' sent not signed rpm: ' + f)
else:
dom0updates_fatal('Domain ' + source + ' sent unexpected file: ' + f)
# After updates received - create repo metadata
subprocess.check_call(["/usr/bin/createrepo", "-q", "/var/lib/qubes/updates"])
exit(0)
def main():
FILECOPY_VMNAME_SIZE = 32
blob=os.read(0, FILECOPY_VMNAME_SIZE)
vmname = blob.split("\x00")[0]
qvm_collection = QubesVmCollection()
qvm_collection.lock_db_for_reading()
qvm_collection.load()
qvm_collection.unlock_db()
if vmname == '@dom0updates':
updatevm = qvm_collection.get_updatevm_vm()
handle_dom0updates(updatevm)
# handle_dom0updates never returns
vm = qvm_collection.get_vm_by_name(vmname)
# we do not want to flood dom0 with error windows; so just log to stderr
if vm is None:
print >> sys.stderr, 'Domain ' + vmname + ' does not exist ?'
exit(1)
if not vm.is_running():
print >> sys.stderr, 'Domain ' + vmname + ' is not running ?'
exit(1)
if not is_copy_allowed(vm):
exit(1)
cmd = "root:/usr/lib/qubes/qfile-unpacker " + os.getenv("QREXEC_REMOTE_DOMAIN")
os.execl("/usr/lib/qubes/qrexec_client", "qrexec_client", "-d", vmname, cmd)
main()