50d34755fa
Rename events: - domain-feature-set -> domain-feature-set:feature - domain-feature-delete -> domain-feature-delete:feature - domain-tag-add -> domain-tag-add:tag - domain-tag-delete -> domain-tag-delete:tag Make it consistent with property-* events. It makes more sense to include tag/feature name in event name, so handler can watch a single tag/feature - which is the most common case. Otherwise, most handlers would begin with `if feature == '...'` anyway, wasting time on most events. In cases where multiple features/tags should be handled by a single handler, it is now possible to register a handler with wildcard, for example `domain-feature-set:*`.
65 lines
2.5 KiB
Python
65 lines
2.5 KiB
Python
# -*- encoding: utf-8 -*-
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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 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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'''Extension responsible for qvm-service framework'''
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import qubes.ext
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class ServicesExtension(qubes.ext.Extension):
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'''This extension export features with 'service.' prefix to QubesDB in
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/qubes-service/ tree.
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'''
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# pylint: disable=no-self-use
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@qubes.ext.handler('domain-qdb-create')
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def on_domain_qdb_create(self, vm, event):
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'''Actually export features'''
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# pylint: disable=unused-argument
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for feature, value in vm.features.items():
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if not feature.startswith('service.'):
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continue
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service = feature[len('service.'):]
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# forcefully convert to '0' or '1'
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vm.untrusted_qdb.write('/qubes-service/{}'.format(service),
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str(int(bool(value))))
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@qubes.ext.handler('domain-feature-set:*')
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def on_domain_feature_set(self, vm, event, feature, value, oldvalue=None):
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'''Update /qubes-service/ QubesDB tree in runtime'''
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# pylint: disable=unused-argument
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if not vm.is_running():
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return
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if not feature.startswith('service.'):
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return
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service = feature[len('service.'):]
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# forcefully convert to '0' or '1'
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vm.untrusted_qdb.write('/qubes-service/{}'.format(service),
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str(int(bool(value))))
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@qubes.ext.handler('domain-feature-delete:*')
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def on_domain_feature_delete(self, vm, event, feature):
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'''Update /qubes-service/ QubesDB tree in runtime'''
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# pylint: disable=unused-argument
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if not vm.is_running():
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return
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if not feature.startswith('service.'):
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return
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service = feature[len('service.'):]
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vm.untrusted_qdb.rm('/qubes-service/{}'.format(service))
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