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97 lines
3.8 KiB
Python
97 lines
3.8 KiB
Python
import os
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import stat
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import sys
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import tempfile
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import unittest
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from django.core.exceptions import SuspiciousOperation
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from django.test import SimpleTestCase
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from django.utils import archive
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try:
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import bz2 # NOQA
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HAS_BZ2 = True
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except ImportError:
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HAS_BZ2 = False
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try:
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import lzma # NOQA
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HAS_LZMA = True
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except ImportError:
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HAS_LZMA = False
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class TestArchive(unittest.TestCase):
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def setUp(self):
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self.testdir = os.path.join(os.path.dirname(__file__), "archives")
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old_cwd = os.getcwd()
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os.chdir(self.testdir)
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self.addCleanup(os.chdir, old_cwd)
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def test_extract_function(self):
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with os.scandir(self.testdir) as entries:
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for entry in entries:
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with self.subTest(entry.name), tempfile.TemporaryDirectory() as tmpdir:
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if (entry.name.endswith(".bz2") and not HAS_BZ2) or (
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entry.name.endswith((".lzma", ".xz")) and not HAS_LZMA
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):
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continue
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archive.extract(entry.path, tmpdir)
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self.assertTrue(os.path.isfile(os.path.join(tmpdir, "1")))
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self.assertTrue(os.path.isfile(os.path.join(tmpdir, "2")))
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self.assertTrue(os.path.isfile(os.path.join(tmpdir, "foo", "1")))
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self.assertTrue(os.path.isfile(os.path.join(tmpdir, "foo", "2")))
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self.assertTrue(
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os.path.isfile(os.path.join(tmpdir, "foo", "bar", "1"))
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)
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self.assertTrue(
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os.path.isfile(os.path.join(tmpdir, "foo", "bar", "2"))
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)
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@unittest.skipIf(
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sys.platform == "win32", "Python on Windows has a limited os.chmod()."
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)
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def test_extract_file_permissions(self):
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"""archive.extract() preserves file permissions."""
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mask = stat.S_IRWXU | stat.S_IRWXG | stat.S_IRWXO
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umask = os.umask(0)
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os.umask(umask) # Restore the original umask.
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with os.scandir(self.testdir) as entries:
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for entry in entries:
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if (
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entry.name.startswith("leadpath_")
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or (entry.name.endswith(".bz2") and not HAS_BZ2)
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or (entry.name.endswith((".lzma", ".xz")) and not HAS_LZMA)
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):
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continue
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with self.subTest(entry.name), tempfile.TemporaryDirectory() as tmpdir:
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archive.extract(entry.path, tmpdir)
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# An executable file in the archive has executable
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# permissions.
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filepath = os.path.join(tmpdir, "executable")
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self.assertEqual(os.stat(filepath).st_mode & mask, 0o775)
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# A file is readable even if permission data is missing.
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filepath = os.path.join(tmpdir, "no_permissions")
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self.assertEqual(os.stat(filepath).st_mode & mask, 0o666 & ~umask)
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class TestArchiveInvalid(SimpleTestCase):
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def test_extract_function_traversal(self):
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archives_dir = os.path.join(os.path.dirname(__file__), "traversal_archives")
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tests = [
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("traversal.tar", ".."),
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("traversal_absolute.tar", "/tmp/evil.py"),
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]
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if sys.platform == "win32":
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tests += [
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("traversal_disk_win.tar", "d:evil.py"),
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("traversal_disk_win.zip", "d:evil.py"),
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]
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msg = "Archive contains invalid path: '%s'"
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for entry, invalid_path in tests:
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with self.subTest(entry), tempfile.TemporaryDirectory() as tmpdir:
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with self.assertRaisesMessage(SuspiciousOperation, msg % invalid_path):
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archive.extract(os.path.join(archives_dir, entry), tmpdir)
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