148 lines
5.7 KiB
Python
148 lines
5.7 KiB
Python
#
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# The Qubes OS Project, http://www.qubes-os.org
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#
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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 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, 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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import os
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import subprocess
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import tempfile
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import shutil
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import qubes.tarwriter
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import qubes.tests
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class TC_00_TarWriter(qubes.tests.QubesTestCase):
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def setUp(self):
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super(TC_00_TarWriter, self).setUp()
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self.input_path = tempfile.mktemp()
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self.output_path = tempfile.mktemp()
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self.extract_dir = tempfile.mkdtemp()
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def tearDown(self):
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if os.path.exists(self.input_path):
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os.unlink(self.input_path)
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if os.path.exists(self.output_path):
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os.unlink(self.output_path)
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if os.path.exists(self.extract_dir):
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shutil.rmtree(self.extract_dir)
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return super(TC_00_TarWriter, self).tearDown()
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def assertTarExtractable(self, expected_name=None):
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if expected_name is None:
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expected_name = self.input_path
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with self.assertNotRaises(subprocess.CalledProcessError):
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tar_output = subprocess.check_output(
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['tar', 'xvf', self.output_path],
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cwd=self.extract_dir,
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stderr=subprocess.STDOUT)
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expected_output = expected_name + '\n'
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if expected_name[0] == '/':
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expected_output = (
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'tar: Removing leading `/\' from member names\n' +
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expected_output)
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self.assertEqual(tar_output.decode(), expected_output)
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extracted_path = os.path.join(self.extract_dir,
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expected_name.lstrip('/'))
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with self.assertNotRaises(subprocess.CalledProcessError):
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subprocess.check_call(
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['diff', '-q', self.input_path, extracted_path])
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# make sure the file is still sparse
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orig_stat = os.stat(self.input_path)
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extracted_stat = os.stat(extracted_path)
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self.assertEqual(orig_stat.st_blocks, extracted_stat.st_blocks)
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self.assertEqual(orig_stat.st_size, extracted_stat.st_size)
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def write_sparse_chunks(self, num_chunks):
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with open(self.input_path, 'w') as f:
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for i in range(num_chunks):
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f.seek(8192 * i)
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f.write('a' * 4096)
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def test_000_simple(self):
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self.write_sparse_chunks(1)
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with open(self.input_path, 'w') as f:
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f.write('a' * 4096)
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qubes.tarwriter.main([self.input_path, self.output_path])
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self.assertTarExtractable()
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def test_001_simple_sparse2(self):
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self.write_sparse_chunks(2)
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qubes.tarwriter.main([self.input_path, self.output_path])
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self.assertTarExtractable()
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def test_002_simple_sparse3(self):
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# tar header contains info about 4 chunks, check for off-by-one errors
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self.write_sparse_chunks(3)
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qubes.tarwriter.main([self.input_path, self.output_path])
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self.assertTarExtractable()
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def test_003_simple_sparse4(self):
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# tar header contains info about 4 chunks, check for off-by-one errors
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self.write_sparse_chunks(4)
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qubes.tarwriter.main([self.input_path, self.output_path])
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self.assertTarExtractable()
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def test_004_simple_sparse5(self):
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# tar header contains info about 4 chunks, check for off-by-one errors
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self.write_sparse_chunks(5)
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qubes.tarwriter.main([self.input_path, self.output_path])
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self.assertTarExtractable()
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def test_005_simple_sparse24(self):
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# tar header contains info about 4 chunks, next header contains 21 of
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# them, check for off-by-one errors
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self.write_sparse_chunks(24)
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qubes.tarwriter.main([self.input_path, self.output_path])
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self.assertTarExtractable()
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def test_006_simple_sparse25(self):
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# tar header contains info about 4 chunks, next header contains 21 of
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# them, check for off-by-one errors
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self.write_sparse_chunks(25)
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qubes.tarwriter.main([self.input_path, self.output_path])
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self.assertTarExtractable()
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def test_007_simple_sparse26(self):
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# tar header contains info about 4 chunks, next header contains 21 of
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# them, check for off-by-one errors
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self.write_sparse_chunks(26)
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qubes.tarwriter.main([self.input_path, self.output_path])
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self.assertTarExtractable()
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def test_010_override_name(self):
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self.write_sparse_chunks(1)
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qubes.tarwriter.main(['--override-name',
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'different-name', self.input_path, self.output_path])
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self.assertTarExtractable(expected_name='different-name')
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def test_011_empty(self):
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self.write_sparse_chunks(0)
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qubes.tarwriter.main([self.input_path, self.output_path])
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self.assertTarExtractable()
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def test_012_gzip(self):
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self.write_sparse_chunks(0)
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qubes.tarwriter.main([
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'--use-compress-program=gzip', self.input_path, self.output_path])
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with self.assertNotRaises(subprocess.CalledProcessError):
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subprocess.check_call(['gzip', '--test', self.output_path])
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self.assertTarExtractable()
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