cd082d4bfe
Python 2.7's zipfile implementation wrongly thinks that zip64 is required for files larger than 2GiB. We can work around this by adjusting their limit. Note that `zipfile.writestr()` will not work for strings larger than 2GiB. The Python interpreter sometimes rejects strings that large (though it isn't clear to me exactly what circumstances cause this). `zipfile.write()` must be used directly to work around this. This mess can be avoided if we port to python3. Bug: 18015246 Change-Id: I8a476d99c5efdef6ea408373b706e9fbd3a798be
109 lines
3.3 KiB
Python
109 lines
3.3 KiB
Python
#
|
|
# Copyright (C) 2015 The Android Open Source Project
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
#
|
|
import os
|
|
import tempfile
|
|
import time
|
|
import unittest
|
|
import zipfile
|
|
|
|
import common
|
|
|
|
|
|
def random_string_with_holes(size, block_size, step_size):
|
|
data = ["\0"] * size
|
|
for begin in range(0, size, step_size):
|
|
end = begin + block_size
|
|
data[begin:end] = os.urandom(block_size)
|
|
return "".join(data)
|
|
|
|
|
|
class CommonZipTest(unittest.TestCase):
|
|
def _test_ZipWrite(self, contents, extra_zipwrite_args=None):
|
|
extra_zipwrite_args = dict(extra_zipwrite_args or {})
|
|
|
|
test_file = tempfile.NamedTemporaryFile(delete=False)
|
|
zip_file = tempfile.NamedTemporaryFile(delete=False)
|
|
|
|
test_file_name = test_file.name
|
|
zip_file_name = zip_file.name
|
|
|
|
# File names within an archive strip the leading slash.
|
|
arcname = extra_zipwrite_args.get("arcname", test_file_name)
|
|
if arcname[0] == "/":
|
|
arcname = arcname[1:]
|
|
|
|
zip_file.close()
|
|
zip_file = zipfile.ZipFile(zip_file_name, "w")
|
|
|
|
try:
|
|
test_file.write(contents)
|
|
test_file.close()
|
|
|
|
old_stat = os.stat(test_file_name)
|
|
expected_mode = extra_zipwrite_args.get("perms", 0o644)
|
|
|
|
time.sleep(5) # Make sure the atime/mtime will change measurably.
|
|
|
|
common.ZipWrite(zip_file, test_file_name, **extra_zipwrite_args)
|
|
|
|
new_stat = os.stat(test_file_name)
|
|
self.assertEqual(int(old_stat.st_mode), int(new_stat.st_mode))
|
|
self.assertEqual(int(old_stat.st_mtime), int(new_stat.st_mtime))
|
|
|
|
zip_file.close()
|
|
zip_file = zipfile.ZipFile(zip_file_name, "r")
|
|
info = zip_file.getinfo(arcname)
|
|
|
|
self.assertEqual(info.date_time, (2009, 1, 1, 0, 0, 0))
|
|
mode = (info.external_attr >> 16) & 0o777
|
|
self.assertEqual(mode, expected_mode)
|
|
self.assertEqual(zip_file.read(arcname), contents)
|
|
finally:
|
|
os.remove(test_file_name)
|
|
os.remove(zip_file_name)
|
|
|
|
def test_ZipWrite(self):
|
|
file_contents = os.urandom(1024)
|
|
self._test_ZipWrite(file_contents)
|
|
|
|
def test_ZipWrite_with_opts(self):
|
|
file_contents = os.urandom(1024)
|
|
self._test_ZipWrite(file_contents, {
|
|
"arcname": "foobar",
|
|
"perms": 0o777,
|
|
"compress_type": zipfile.ZIP_DEFLATED,
|
|
})
|
|
|
|
def test_ZipWrite_large_file(self):
|
|
kilobytes = 1024
|
|
megabytes = 1024 * kilobytes
|
|
gigabytes = 1024 * megabytes
|
|
|
|
size = int(2 * gigabytes + 1)
|
|
block_size = 4 * kilobytes
|
|
step_size = 4 * megabytes
|
|
file_contents = random_string_with_holes(
|
|
size, block_size, step_size)
|
|
self._test_ZipWrite(file_contents, {
|
|
"compress_type": zipfile.ZIP_DEFLATED,
|
|
})
|
|
|
|
def test_ZipWrite_resets_ZIP64_LIMIT(self):
|
|
default_limit = (1 << 31) - 1
|
|
self.assertEqual(default_limit, zipfile.ZIP64_LIMIT)
|
|
self._test_ZipWrite('')
|
|
self.assertEqual(default_limit, zipfile.ZIP64_LIMIT)
|