tools: qvm-device
The tool and tests.
This commit is contained in:
Marek Marczykowski-Górecki
parent
6f46faba6c
commit
d5bf5a1d75
201
qubesmgmt/tests/tools/qvm_device.py
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201
qubesmgmt/tests/tools/qvm_device.py
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# pylint: disable=protected-access
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#
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# The Qubes OS Project, https://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 Lesser General Public License as published by
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# the Free Software Foundation; either version 2.1 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 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 License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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''' Tests for the `qvm-device` tool. '''
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import unittest.mock as mock
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import qubesmgmt.tests
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import qubesmgmt.tests.tools
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import qubesmgmt.devices
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import qubesmgmt.tools.qvm_device
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class TC_00_qvm_device(qubesmgmt.tests.QubesTestCase):
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''' Tests the output logic of the qvm-device tool '''
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def setUp(self):
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super(TC_00_qvm_device, self).setUp()
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self.app.expected_calls[('dom0', 'mgmt.vm.List', None, None)] = \
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b'0\0test-vm1 class=AppVM state=Running\n' \
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b'test-vm2 class=AppVM state=Running\n' \
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b'test-vm3 class=AppVM state=Running\n'
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self.app.expected_calls[('test-vm1', 'mgmt.vm.device.test.Available',
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None, None)] = \
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b'0\0dev1 description=Description here\n'
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self.vm1 = self.app.domains['test-vm1']
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self.vm2 = self.app.domains['test-vm2']
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self.vm1_device = self.app.domains['test-vm1'].devices['test']['dev1']
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def test_000_list_all(self):
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''' List all exposed vm devices. No devices are attached to other
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domains.
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'''
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self.app.expected_calls[('test-vm2', 'mgmt.vm.device.test.Available',
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None, None)] = \
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b'0\0dev2 description=Description here2\n'
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self.app.expected_calls[('test-vm3', 'mgmt.vm.device.test.Available',
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None, None)] = \
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b'0\0'
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self.app.expected_calls[('test-vm1', 'mgmt.vm.device.test.List',
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None, None)] = b'0\0'
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self.app.expected_calls[('test-vm2', 'mgmt.vm.device.test.List',
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None, None)] = b'0\0'
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self.app.expected_calls[('test-vm3', 'mgmt.vm.device.test.List',
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None, None)] = b'0\0'
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with qubesmgmt.tests.tools.StdoutBuffer() as buf:
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qubesmgmt.tools.qvm_device.main(
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['test', 'list'], app=self.app)
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self.assertEqual(
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[x.rstrip() for x in buf.getvalue().splitlines()],
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['test-vm1:dev1 Description here',
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'test-vm2:dev2 Description here2']
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)
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def test_001_list_persistent_attach(self):
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''' Attach the device exposed by the `vm1` to the `vm3` persistently.
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'''
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self.app.expected_calls[('test-vm2', 'mgmt.vm.device.test.Available',
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None, None)] = \
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b'0\0dev2 description=Description here2\n'
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self.app.expected_calls[('test-vm3', 'mgmt.vm.device.test.Available',
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None, None)] = \
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b'0\0'
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self.app.expected_calls[('test-vm1', 'mgmt.vm.device.test.List',
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None, None)] = b'0\0'
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self.app.expected_calls[('test-vm2', 'mgmt.vm.device.test.List',
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None, None)] = b'0\0'
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self.app.expected_calls[('test-vm3', 'mgmt.vm.device.test.List',
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None, None)] = \
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b'0\0test-vm1+dev1 persistent=yes\n'
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with qubesmgmt.tests.tools.StdoutBuffer() as buf:
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qubesmgmt.tools.qvm_device.main(
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['test', 'list', 'test-vm3'], app=self.app)
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self.assertEqual(
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buf.getvalue(),
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'test-vm1:dev1 Description here test-vm3\n'
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)
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def test_002_list_list_temp_attach(self):
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''' Attach the device exposed by the `vm1` to the `vm3`
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non-persistently.
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'''
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self.app.expected_calls[('test-vm2', 'mgmt.vm.device.test.Available',
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None, None)] = \
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b'0\0dev2 description=Description here2\n'
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self.app.expected_calls[('test-vm3', 'mgmt.vm.device.test.Available',
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None, None)] = \
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b'0\0'
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self.app.expected_calls[('test-vm1', 'mgmt.vm.device.test.List',
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None, None)] = b'0\0'
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self.app.expected_calls[('test-vm2', 'mgmt.vm.device.test.List',
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None, None)] = b'0\0'
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self.app.expected_calls[('test-vm3', 'mgmt.vm.device.test.List',
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None, None)] = \
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b'0\0test-vm1+dev1\n'
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with qubesmgmt.tests.tools.StdoutBuffer() as buf:
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qubesmgmt.tools.qvm_device.main(
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['test', 'list', 'test-vm3'], app=self.app)
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self.assertEqual(
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buf.getvalue(),
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'test-vm1:dev1 Description here test-vm3\n'
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)
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def test_010_attach(self):
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''' Test attach action '''
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self.app.expected_calls[('test-vm2', 'mgmt.vm.device.test.Attach',
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'test-vm1+dev1', b'')] = b'0\0'
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qubesmgmt.tools.qvm_device.main(
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['test', 'attach', 'test-vm2', 'test-vm1:dev1'], app=self.app)
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self.assertAllCalled()
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def test_011_attach_options(self):
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''' Test attach action '''
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self.app.expected_calls[('test-vm2', 'mgmt.vm.device.test.Attach',
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'test-vm1+dev1', b'ro=True')] = b'0\0'
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qubesmgmt.tools.qvm_device.main(
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['test', 'attach', '-o', 'ro=True', 'test-vm2', 'test-vm1:dev1'],
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app=self.app)
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self.assertAllCalled()
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def test_011_attach_persistent(self):
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''' Test attach action '''
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self.app.expected_calls[('test-vm2', 'mgmt.vm.device.test.Attach',
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'test-vm1+dev1', b'persistent=yes')] = b'0\0'
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qubesmgmt.tools.qvm_device.main(
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['test', 'attach', '-p', 'test-vm2', 'test-vm1:dev1'],
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app=self.app)
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self.assertAllCalled()
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def test_012_attach_invalid(self):
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''' Test attach action '''
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with qubesmgmt.tests.tools.StderrBuffer() as stderr:
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with self.assertRaises(SystemExit):
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qubesmgmt.tools.qvm_device.main(
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['test', 'attach', '-p', 'test-vm2', 'dev1'],
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app=self.app)
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self.assertIn('expected a backend vm & device id',
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stderr.getvalue())
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self.assertAllCalled()
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def test_013_attach_invalid2(self):
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''' Test attach action '''
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with qubesmgmt.tests.tools.StderrBuffer() as stderr:
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with self.assertRaises(SystemExit):
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qubesmgmt.tools.qvm_device.main(
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['test', 'attach', '-p', 'test-vm2', 'test-vm1:invalid'],
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app=self.app)
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self.assertIn('doesn\'t expose device',
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stderr.getvalue())
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self.assertAllCalled()
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def test_014_attach_invalid3(self):
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''' Test attach action '''
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with qubesmgmt.tests.tools.StderrBuffer() as stderr:
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with self.assertRaises(SystemExit):
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qubesmgmt.tools.qvm_device.main(
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['test', 'attach', '-p', 'test-vm2', 'no-such-vm:dev3'],
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app=self.app)
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self.assertIn('no backend vm',
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stderr.getvalue())
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self.assertAllCalled()
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def test_020_detach(self):
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''' Test detach action '''
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self.app.expected_calls[('test-vm2', 'mgmt.vm.device.test.Detach',
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'test-vm1+dev1', None)] = b'0\0'
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qubesmgmt.tools.qvm_device.main(
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['test', 'detach', 'test-vm2', 'test-vm1:dev1'], app=self.app)
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self.assertAllCalled()
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def test_021_detach_unknown(self):
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''' Test detach action '''
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self.app.expected_calls[('test-vm2', 'mgmt.vm.device.test.Detach',
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'test-vm1+dev7', None)] = b'0\0'
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qubesmgmt.tools.qvm_device.main(
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['test', 'detach', 'test-vm2', 'test-vm1:dev7'], app=self.app)
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self.assertAllCalled()
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256
qubesmgmt/tools/qvm_device.py
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256
qubesmgmt/tools/qvm_device.py
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@ -0,0 +1,256 @@
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# 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) 2016 Bahtiar `kalkin-` Gadimov <bahtiar@gadimov.de>
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# Copyright (C) 2016 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 Lesser General Public License as published by
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# the Free Software Foundation; either version 2.1 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 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 License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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'''Qubes volume and block device managment'''
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import argparse
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import os
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import sys
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import qubesmgmt
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import qubesmgmt.exc
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import qubesmgmt.tools
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import qubesmgmt.devices
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def prepare_table(dev_list):
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''' Converts a list of :py:class:`qubes.devices.DeviceInfo` objects to a
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list of tupples for the :py:func:`qubes.tools.print_table`.
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If :program:`qvm-devices` is running in a TTY, it will ommit duplicate
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data.
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:param iterable dev_list: List of :py:class:`qubes.devices.DeviceInfo`
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objects.
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:returns: list of tupples
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'''
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output = []
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header = []
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if sys.stdout.isatty():
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header += [('BACKEND:DEVID', 'DESCRIPTION', 'USED BY')] # NOQA
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for line in dev_list:
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output += [(
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line.ident,
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line.description,
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str(line.assignments),
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)]
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return header + sorted(output)
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class Line(object):
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'''Helper class to hold single device info for listing'''
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# pylint: disable=too-few-public-methods
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def __init__(self, device: qubesmgmt.devices.DeviceInfo, attached_to=None):
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self.ident = "{!s}:{!s}".format(device.backend_domain, device.ident)
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self.description = device.description
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self.attached_to = attached_to if attached_to else ""
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self.frontends = []
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@property
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def assignments(self):
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'''list of frontends the device is assigned to'''
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return ', '.join(self.frontends)
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def list_devices(args):
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''' Called by the parser to execute the qubes-devices list
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subcommand. '''
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app = args.app
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devices = set()
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if hasattr(args, 'domains') and args.domains:
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for domain in args.domains:
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for dev in domain.devices[args.devclass].attached():
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devices.add(dev)
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for dev in domain.devices[args.devclass].available():
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devices.add(dev)
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else:
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for domain in app.domains:
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for dev in domain.devices[args.devclass].available():
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devices.add(dev)
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result = {dev: Line(dev) for dev in devices}
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for dev in result:
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for domain in app.domains:
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if domain == dev.backend_domain:
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continue
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if dev in domain.devices[args.devclass].assignments():
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result[dev].frontends.append(str(domain))
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qubesmgmt.tools.print_table(prepare_table(result.values()))
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def attach_device(args):
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''' Called by the parser to execute the :program:`qvm-devices attach`
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subcommand.
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'''
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device_assignment = args.device_assignment
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vm = args.domains[0]
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options = dict(opt.split('=', 1) for opt in args.option or [])
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device_assignment.persistent = args.persistent
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device_assignment.options = options
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vm.devices[args.devclass].attach(device_assignment)
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def detach_device(args):
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''' Called by the parser to execute the :program:`qvm-devices detach`
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subcommand.
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'''
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device_assignment = args.device_assignment
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vm = args.domains[0]
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vm.devices[args.devclass].detach(device_assignment)
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def init_list_parser(sub_parsers):
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''' Configures the parser for the :program:`qvm-devices list` subcommand '''
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# pylint: disable=protected-access
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list_parser = sub_parsers.add_parser('list', aliases=('ls', 'l'),
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help='list devices')
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vm_name_group = qubesmgmt.tools.VmNameGroup(
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list_parser, required=False, vm_action=qubesmgmt.tools.VmNameAction,
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help='list devices assigned to specific domain(s)')
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list_parser._mutually_exclusive_groups.append(vm_name_group)
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list_parser.set_defaults(func=list_devices)
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class DeviceAction(qubesmgmt.tools.QubesAction):
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''' Action for argument parser that gets the
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:py:class:``qubesmgmt.device.DeviceAssignment`` from a
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BACKEND:DEVICE_ID string.
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''' # pylint: disable=too-few-public-methods
|
||||||
|
|
||||||
|
def __init__(self, help='A backend & device id combination',
|
||||||
|
required=True, allow_unknown=False, **kwargs):
|
||||||
|
# pylint: disable=redefined-builtin
|
||||||
|
self.allow_unknown = allow_unknown
|
||||||
|
super(DeviceAction, self).__init__(help=help, required=required,
|
||||||
|
**kwargs)
|
||||||
|
|
||||||
|
def __call__(self, parser, namespace, values, option_string=None):
|
||||||
|
''' Set ``namespace.device_assignment`` to ``values`` '''
|
||||||
|
setattr(namespace, self.dest, values)
|
||||||
|
|
||||||
|
def parse_qubes_app(self, parser, namespace):
|
||||||
|
app = namespace.app
|
||||||
|
backend_device_id = getattr(namespace, self.dest)
|
||||||
|
devclass = namespace.devclass
|
||||||
|
|
||||||
|
try:
|
||||||
|
vmname, device_id = backend_device_id.split(':', 1)
|
||||||
|
try:
|
||||||
|
vm = app.domains[vmname]
|
||||||
|
except KeyError:
|
||||||
|
parser.error_runtime("no backend vm {!r}".format(vmname))
|
||||||
|
|
||||||
|
try:
|
||||||
|
dev = vm.devices[devclass][device_id]
|
||||||
|
if not self.allow_unknown and isinstance(dev,
|
||||||
|
qubesmgmt.devices.UnknownDevice):
|
||||||
|
raise KeyError(device_id)
|
||||||
|
except KeyError:
|
||||||
|
parser.error_runtime(
|
||||||
|
"backend vm {!r} doesn't expose device {!r}"
|
||||||
|
.format(vmname, device_id))
|
||||||
|
device_assignment = qubesmgmt.devices.DeviceAssignment(vm,
|
||||||
|
device_id)
|
||||||
|
setattr(namespace, self.dest, device_assignment)
|
||||||
|
except ValueError:
|
||||||
|
parser.error('expected a backend vm & device id combination ' \
|
||||||
|
'like foo:bar got %s' % backend_device_id)
|
||||||
|
|
||||||
|
|
||||||
|
def get_parser(device_class=None):
|
||||||
|
'''Create :py:class:`argparse.ArgumentParser` suitable for
|
||||||
|
:program:`qvm-block`.
|
||||||
|
'''
|
||||||
|
parser = qubesmgmt.tools.QubesArgumentParser(description=__doc__,
|
||||||
|
want_app=True)
|
||||||
|
parser.register('action', 'parsers',
|
||||||
|
qubesmgmt.tools.AliasedSubParsersAction)
|
||||||
|
if device_class:
|
||||||
|
parser.add_argument('devclass', const=device_class,
|
||||||
|
action='store_const',
|
||||||
|
help=argparse.SUPPRESS)
|
||||||
|
else:
|
||||||
|
parser.add_argument('devclass', metavar='DEVICE_CLASS', action='store',
|
||||||
|
help="Device class to manage ('pci', 'usb', etc)")
|
||||||
|
sub_parsers = parser.add_subparsers(
|
||||||
|
title='commands',
|
||||||
|
description="For more information see qvm-device command -h",
|
||||||
|
dest='command')
|
||||||
|
init_list_parser(sub_parsers)
|
||||||
|
attach_parser = sub_parsers.add_parser(
|
||||||
|
'attach', help="Attach device to domain", aliases=('at', 'a'))
|
||||||
|
detach_parser = sub_parsers.add_parser(
|
||||||
|
"detach", help="Detach device from domain", aliases=('d', 'dt'))
|
||||||
|
|
||||||
|
attach_parser.add_argument('VMNAME', nargs=1,
|
||||||
|
action=qubesmgmt.tools.VmNameAction)
|
||||||
|
detach_parser.add_argument('VMNAME', nargs=1,
|
||||||
|
action=qubesmgmt.tools.VmNameAction)
|
||||||
|
|
||||||
|
attach_parser.add_argument(metavar='BACKEND:DEVICE_ID',
|
||||||
|
dest='device_assignment',
|
||||||
|
action=DeviceAction)
|
||||||
|
detach_parser.add_argument(metavar='BACKEND:DEVICE_ID',
|
||||||
|
dest='device_assignment',
|
||||||
|
action=DeviceAction, allow_unknown=True)
|
||||||
|
|
||||||
|
attach_parser.add_argument('--option', '-o', action='append',
|
||||||
|
help="Set option for the device in opt=value form (can be specified "
|
||||||
|
"multiple times)")
|
||||||
|
attach_parser.add_argument('--persistent', '-p', action='store_true',
|
||||||
|
default=False,
|
||||||
|
help="Attach device persistently (so it will be automatically "
|
||||||
|
"attached at qube startup)")
|
||||||
|
|
||||||
|
attach_parser.set_defaults(func=attach_device)
|
||||||
|
detach_parser.set_defaults(func=detach_device)
|
||||||
|
|
||||||
|
return parser
|
||||||
|
|
||||||
|
|
||||||
|
def main(args=None, app=None):
|
||||||
|
'''Main routine of :program:`qvm-block`.'''
|
||||||
|
basename = os.path.basename(sys.argv[0])
|
||||||
|
devclass = None
|
||||||
|
if basename.startswith('qvm-') and basename != 'qvm-device':
|
||||||
|
devclass = basename[4:]
|
||||||
|
args = get_parser(devclass).parse_args(args, app=app)
|
||||||
|
try:
|
||||||
|
args.func(args)
|
||||||
|
except qubesmgmt.exc.QubesException as e:
|
||||||
|
print(str(e), file=sys.stderr)
|
||||||
|
return 1
|
||||||
|
return 0
|
||||||
|
|
||||||
|
|
||||||
|
if __name__ == '__main__':
|
||||||
|
sys.exit(main())
|
||||||
Loading…
Reference in New Issue
Block a user