wehub-resource-sync
277 lines
10 KiB
Python
277 lines
10 KiB
Python
# Copyright (c) 2026 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import io
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import os
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import tarfile
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import tempfile
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import unittest
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from unittest import mock
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import paddle.vision.datasets.cifar as vision_cifar
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from paddle.dataset.cifar import CIFAR10_MD5, CIFAR100_MD5, reader_creator
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from paddle.utils.download import _safe_extract_tar
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from paddle.vision.datasets import Cifar10, Cifar100
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class TestCifarSecurity(unittest.TestCase):
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def _write_tar(self, data_file):
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with tarfile.open(data_file, 'w:gz') as data_tar:
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content = b'not an official CIFAR archive'
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info = tarfile.TarInfo('cifar-10-batches-py/data_batch_1')
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info.size = len(content)
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data_tar.addfile(info, io.BytesIO(content))
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def test_reject_unverified_local_archive(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'cifar-10-python.tar.gz')
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self._write_tar(data_file)
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with self.assertRaisesRegex(
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ValueError,
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'unverified local CIFAR pickle archive|official archive|MD5',
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):
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Cifar10(data_file=data_file, download=False)
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def test_reject_missing_local_archive(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'missing.tar.gz')
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with self.assertRaisesRegex(
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ValueError, 'Local CIFAR archive does not exist'
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):
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Cifar10(data_file=data_file, download=False)
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def test_legacy_reader_rechecks_archive_md5(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'cifar-10-python.tar.gz')
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self._write_tar(data_file)
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reader = reader_creator(
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data_file,
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'data_batch',
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md5sum=CIFAR10_MD5,
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)
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with self.assertRaisesRegex(
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ValueError, 'unverified CIFAR pickle archive|official MD5'
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):
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list(reader())
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def _count_local_cifar_md5_calls(
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self,
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data_file,
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dataset_cls=Cifar10,
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md5sum=CIFAR10_MD5,
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mutate=None,
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):
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md5_calls = []
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def fake_md5file(path):
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md5_calls.append(path)
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return md5sum
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vision_cifar._cached_md5file.cache_clear()
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try:
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with (
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mock.patch.object(vision_cifar, 'md5file', fake_md5file),
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mock.patch.object(
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dataset_cls,
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'_load_data',
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lambda dataset: setattr(dataset, 'data', []),
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),
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):
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dataset_cls(data_file=data_file, download=False)
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if mutate is not None:
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mutate()
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dataset_cls(data_file=data_file, download=False)
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finally:
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vision_cifar._cached_md5file.cache_clear()
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return len(md5_calls)
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def test_local_archive_md5_cache_reuses_unchanged_file(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'cifar-10-python.tar.gz')
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self._write_tar(data_file)
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self.assertEqual(self._count_local_cifar_md5_calls(data_file), 1)
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def test_cifar100_local_archive_md5_cache_reuses_unchanged_file(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'cifar-100-python.tar.gz')
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self._write_tar(data_file)
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self.assertEqual(
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self._count_local_cifar_md5_calls(
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data_file,
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dataset_cls=Cifar100,
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md5sum=CIFAR100_MD5,
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),
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1,
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)
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def test_local_archive_md5_cache_refreshes_changed_file(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'cifar-10-python.tar.gz')
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self._write_tar(data_file)
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def mutate():
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with open(data_file, 'ab') as f:
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f.write(b'changed')
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self.assertEqual(
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self._count_local_cifar_md5_calls(data_file, mutate=mutate), 2
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)
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class TestFlowersSafeExtractTar(unittest.TestCase):
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def _write_tar_members(self, data_file, members):
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with tarfile.open(data_file, 'w:gz') as data_tar:
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for info, content in members:
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fileobj = io.BytesIO(content) if content is not None else None
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data_tar.addfile(info, fileobj)
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def test_reject_path_traversal_member(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'flowers.tgz')
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extract_dir = os.path.join(tmpdir, 'flowers')
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outside_file = os.path.join(tmpdir, 'evil.txt')
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os.mkdir(extract_dir)
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with tarfile.open(data_file, 'w:gz') as data_tar:
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content = b'evil'
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info = tarfile.TarInfo('../evil.txt')
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info.size = len(content)
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data_tar.addfile(info, io.BytesIO(content))
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with (
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tarfile.open(data_file) as data_tar,
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self.assertRaises(ValueError),
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):
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_safe_extract_tar(data_tar, extract_dir)
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self.assertFalse(os.path.exists(outside_file))
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def test_reject_invalid_on_unsafe(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'flowers.tgz')
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extract_dir = os.path.join(tmpdir, 'flowers')
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os.mkdir(extract_dir)
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with tarfile.open(data_file, 'w:gz'):
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pass
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with (
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tarfile.open(data_file) as data_tar,
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self.assertRaisesRegex(
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ValueError, "on_unsafe must be one of 'skip' or 'raise'"
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),
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):
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_safe_extract_tar(data_tar, extract_dir, on_unsafe='bad')
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def test_raise_on_symlink_member(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'flowers.tgz')
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extract_dir = os.path.join(tmpdir, 'flowers')
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os.mkdir(extract_dir)
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symlink_info = tarfile.TarInfo('jpg/link.jpg')
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symlink_info.type = tarfile.SYMTYPE
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symlink_info.linkname = 'image_00001.jpg'
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self._write_tar_members(data_file, [(symlink_info, None)])
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with (
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tarfile.open(data_file) as data_tar,
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self.assertRaisesRegex(ValueError, 'symbolic link'),
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):
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_safe_extract_tar(data_tar, extract_dir, on_unsafe='raise')
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def test_raise_on_hardlink_member(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'flowers.tgz')
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extract_dir = os.path.join(tmpdir, 'flowers')
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os.mkdir(extract_dir)
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hardlink_info = tarfile.TarInfo('jpg/hardlink.jpg')
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hardlink_info.type = tarfile.LNKTYPE
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hardlink_info.linkname = 'jpg/image_00001.jpg'
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self._write_tar_members(data_file, [(hardlink_info, None)])
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with (
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tarfile.open(data_file) as data_tar,
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self.assertRaisesRegex(ValueError, 'hard link'),
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):
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_safe_extract_tar(data_tar, extract_dir, on_unsafe='raise')
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def test_raise_on_special_file_member(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'flowers.tgz')
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extract_dir = os.path.join(tmpdir, 'flowers')
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os.mkdir(extract_dir)
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special_info = tarfile.TarInfo('jpg/special')
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special_info.type = tarfile.FIFOTYPE
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self._write_tar_members(data_file, [(special_info, None)])
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with (
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tarfile.open(data_file) as data_tar,
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self.assertRaisesRegex(ValueError, 'special file'),
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):
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_safe_extract_tar(data_tar, extract_dir, on_unsafe='raise')
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def test_skip_unsafe_member_by_default(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'flowers.tgz')
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extract_dir = os.path.join(tmpdir, 'flowers')
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os.mkdir(extract_dir)
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symlink_info = tarfile.TarInfo('jpg/link.jpg')
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symlink_info.type = tarfile.SYMTYPE
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symlink_info.linkname = 'image_00001.jpg'
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self._write_tar_members(data_file, [(symlink_info, None)])
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with (
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tarfile.open(data_file) as data_tar,
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self.assertWarnsRegex(UserWarning, 'symbolic link'),
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):
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_safe_extract_tar(data_tar, extract_dir)
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self.assertFalse(os.path.exists(os.path.join(extract_dir, 'jpg')))
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def test_extract_regular_member(self):
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with tempfile.TemporaryDirectory() as tmpdir:
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data_file = os.path.join(tmpdir, 'flowers.tgz')
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extract_dir = os.path.join(tmpdir, 'flowers')
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member_name = 'jpg/image_00001.jpg'
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content = b'image content'
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os.mkdir(extract_dir)
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with tarfile.open(data_file, 'w:gz') as data_tar:
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dir_info = tarfile.TarInfo('jpg')
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dir_info.type = tarfile.DIRTYPE
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dir_info.mode = 0o755
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data_tar.addfile(dir_info)
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file_info = tarfile.TarInfo(member_name)
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file_info.mode = 0o644
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file_info.size = len(content)
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data_tar.addfile(file_info, io.BytesIO(content))
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with tarfile.open(data_file) as data_tar:
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_safe_extract_tar(data_tar, extract_dir)
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extracted_file = os.path.join(extract_dir, member_name)
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with open(extracted_file, 'rb') as f:
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self.assertEqual(f.read(), content)
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