8a8674bb57
VM (template) can announce whether it support enforcing firewall rules or not. Fixes QubesOS/qubes-issues#2003
62 lines
2.5 KiB
Python
62 lines
2.5 KiB
Python
# -*- encoding: utf8 -*-
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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) 2017 Marek Marczykowski-Górecki
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# <marmarek@invisiblethingslab.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (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 along
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# with this program; if not, see <http://www.gnu.org/licenses/>.
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import qubes.ext
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class CoreFeatures(qubes.ext.Extension):
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# pylint: disable=too-few-public-methods
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@qubes.ext.handler('features-request')
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def qubes_features_request(self, vm, event, untrusted_features):
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'''Handle features provided by qubes-core-agent and qubes-gui-agent'''
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# pylint: disable=no-self-use,unused-argument
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if getattr(vm, 'template', None):
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vm.log.warning(
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'Ignoring qubes.NotifyTools for template-based VM')
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return
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requested_features = {}
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for feature in ('qrexec', 'gui', 'qubes-firewall'):
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untrusted_value = untrusted_features.get(feature, None)
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if untrusted_value in ('1', '0'):
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requested_features[feature] = bool(int(untrusted_value))
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del untrusted_features
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# default user for qvm-run etc
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# starting with Qubes 4.x ignored
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# qrexec agent presence (0 or 1)
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# gui agent presence (0 or 1)
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qrexec_before = vm.features.get('qrexec', False)
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for feature in ('qrexec', 'gui'):
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# do not allow (Template)VM to override setting if already set
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# some other way
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if feature in requested_features and feature not in vm.features:
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vm.features[feature] = requested_features[feature]
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# those features can be freely enabled or disabled by template
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for feature in ('qubes-firewall',):
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if feature in requested_features:
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vm.features[feature] = requested_features[feature]
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if not qrexec_before and vm.features.get('qrexec', False):
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# if this is the first time qrexec was advertised, now can finish
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# template setup
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vm.fire_event('template-postinstall')
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