core-admin/dom0/aux-tools/qubes-notify-updates

75 lines
2.7 KiB
Python
Executable File

#!/usr/bin/python
#
# The Qubes OS Project, http://www.qubes-os.org
#
# Copyright (C) 2012 Marek Marczykowski <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.
#
#
import os
import os.path
import sys
import subprocess
import shutil
from datetime import datetime
from qubes.qubes import QubesVmCollection
from qubes.qubes import updates_stat_file
def main():
qvm_collection = QubesVmCollection()
qvm_collection.lock_db_for_reading()
qvm_collection.load()
qvm_collection.unlock_db()
source = os.getenv("QREXEC_REMOTE_DOMAIN")
source_vm = qvm_collection.get_vm_by_name(source)
if source_vm is None:
print >> sys.stderr, 'Domain ' + source + ' does not exists (?!)'
exit(1)
update_count = sys.stdin.readline(128).strip()
if not update_count.isdigit():
print >> sys.stderr, 'Domain ' + source + ' sent invalid number of updates: ' + update_count
exit(1)
if source_vm.updateable:
# Just trust information from VM itself
update_f = open(vm.dir_path + '/' + updates_stat_file, "w")
update_f.write(update_count)
update_f.close()
elif source_vm.template is not None:
# Hint about updates availability in template
# If template is running - it will notify about updates itself
if source_vm.template.is_running():
return
# Ignore no-updates info
if int(update_count) > 0:
stat_file = source_vm.template.dir_path + '/' + updates_stat_file
# If VM is started before last updates.stat - it means that updates
# already was installed (but VM still hasn't been restarted), or other
# VM has already notified about updates availability
if os.path.exists(stat_file) and \
source_vm.get_start_time() < datetime.fromtimestamp(os.path.getmtime(stat_file)):
return
update_f = open(stat_file, "w")
update_f.write(update_count)
update_f.close()
else:
print >> sys.stderr, 'Ignoring notification of no updates'
main()