Lib/test/test_tarfile.py# -*- coding: iso-8859-15 -*-
import sys
import os
import shutil
import StringIO
from hashlib import md5
import errno
import unittest
import tarfile
from test import test_support
from test import test_support as support
# Check for our compression modules.
try:
import gzip
gzip.GzipFile
except (ImportError, AttributeError):
gzip = None
try:
import bz2
except ImportError:
bz2 = None
def md5sum(data):
return md5(data).hexdigest()
TEMPDIR = os.path.abspath(test_support.TESTFN)
tarname = test_support.findfile("testtar.tar")
gzipname = os.path.join(TEMPDIR, "testtar.tar.gz")
bz2name = os.path.join(TEMPDIR, "testtar.tar.bz2")
tmpname = os.path.join(TEMPDIR, "tmp.tar")
md5_regtype = "65f477c818ad9e15f7feab0c6d37742f"
md5_sparse = "a54fbc4ca4f4399a90e1b27164012fc6"
class ReadTest(unittest.TestCase):
tarname = tarname
mode = "r:"
def setUp(self):
self.tar = tarfile.open(self.tarname, mode=self.mode, encoding="iso8859-1")
def tearDown(self):
self.tar.close()
class UstarReadTest(ReadTest):
def test_fileobj_regular_file(self):
tarinfo = self.tar.getmember("ustar/regtype")
fobj = self.tar.extractfile(tarinfo)
data = fobj.read()
self.assertTrue((len(data), md5sum(data)) == (tarinfo.size, md5_regtype),
"regular file extraction failed")
def test_fileobj_readlines(self):
self.tar.extract("ustar/regtype", TEMPDIR)
tarinfo = self.tar.getmember("ustar/regtype")
fobj1 = open(os.path.join(TEMPDIR, "ustar/regtype"), "rU")
fobj2 = self.tar.extractfile(tarinfo)
lines1 = fobj1.readlines()
lines2 = fobj2.readlines()
self.assertTrue(lines1 == lines2,
"fileobj.readlines() failed")
self.assertTrue(len(lines2) == 114,
"fileobj.readlines() failed")
self.assertTrue(lines2[83] ==
"I will gladly admit that Python is not the fastest running scripting language.\n",
"fileobj.readlines() failed")
def test_fileobj_iter(self):
self.tar.extract("ustar/regtype", TEMPDIR)
tarinfo = self.tar.getmember("ustar/regtype")
fobj1 = open(os.path.join(TEMPDIR, "ustar/regtype"), "rU")
fobj2 = self.tar.extractfile(tarinfo)
lines1 = fobj1.readlines()
lines2 = [line for line in fobj2]
self.assertTrue(lines1 == lines2,
"fileobj.__iter__() failed")
def test_fileobj_seek(self):
self.tar.extract("ustar/regtype", TEMPDIR)
fobj = open(os.path.join(TEMPDIR, "ustar/regtype"), "rb")
data = fobj.read()
fobj.close()
tarinfo = self.tar.getmember("ustar/regtype")
fobj = self.tar.extractfile(tarinfo)
text = fobj.read()
fobj.seek(0)
self.assertTrue(0 == fobj.tell(),
"seek() to file's start failed")
fobj.seek(2048, 0)
self.assertTrue(2048 == fobj.tell(),
"seek() to absolute position failed")
fobj.seek(-1024, 1)
self.assertTrue(1024 == fobj.tell(),
"seek() to negative relative position failed")
fobj.seek(1024, 1)
self.assertTrue(2048 == fobj.tell(),
"seek() to positive relative position failed")
s = fobj.read(10)
self.assertTrue(s == data[2048:2058],
"read() after seek failed")
fobj.seek(0, 2)
self.assertTrue(tarinfo.size == fobj.tell(),
"seek() to file's end failed")
self.assertTrue(fobj.read() == "",
"read() at file's end did not return empty string")
fobj.seek(-tarinfo.size, 2)
self.assertTrue(0 == fobj.tell(),
"relative seek() to file's start failed")
fobj.seek(512)
s1 = fobj.readlines()
fobj.seek(512)
s2 = fobj.readlines()
self.assertTrue(s1 == s2,
"readlines() after seek failed")
fobj.seek(0)
self.assertTrue(len(fobj.readline()) == fobj.tell(),
"tell() after readline() failed")
fobj.seek(512)
self.assertTrue(len(fobj.readline()) + 512 == fobj.tell(),
"tell() after seek() and readline() failed")
fobj.seek(0)
line = fobj.readline()
self.assertTrue(fobj.read() == data[len(line):],
"read() after readline() failed")
fobj.close()
# Test if symbolic and hard links are resolved by extractfile(). The
# test link members each point to a regular member whose data is
# supposed to be exported.
def _test_fileobj_link(self, lnktype, regtype):
a = self.tar.extractfile(lnktype)
b = self.tar.extractfile(regtype)
self.assertEqual(a.name, b.name)
def test_fileobj_link1(self):
self._test_fileobj_link("ustar/lnktype", "ustar/regtype")
def test_fileobj_link2(self):
self._test_fileobj_link("./ustar/linktest2/lnktype", "ustar/linktest1/regtype")
def test_fileobj_symlink1(self):
self._test_fileobj_link("ustar/symtype", "ustar/regtype")
def test_fileobj_symlink2(self):
self._test_fileobj_link("./ustar/linktest2/symtype", "ustar/linktest1/regtype")
def test_issue14160(self):
self._test_fileobj_link("symtype2", "ustar/regtype")
class ListTest(ReadTest, unittest.TestCase):
# Override setUp to use default encoding (UTF-8)
def setUp(self):
self.tar = tarfile.open(self.tarname, mode=self.mode)
def test_list(self):
with test_support.captured_stdout() as t:
self.tar.list(verbose=False)
out = t.getvalue()
self.assertIn('ustar/conttype', out)
self.assertIn('ustar/regtype', out)
self.assertIn('ustar/lnktype', out)
self.assertIn('ustar' + ('/12345' * 40) + '67/longname', out)
self.assertIn('./ustar/linktest2/symtype', out)
self.assertIn('./ustar/linktest2/lnktype', out)
# Make sure it puts trailing slash for directory
self.assertIn('ustar/dirtype/', out)
self.assertIn('ustar/dirtype-with-size/', out)
# Make sure it is able to print non-ASCII characters
self.assertIn('ustar/umlauts-'
'\xc4\xd6\xdc\xe4\xf6\xfc\xdf', out)
self.assertIn('misc/regtype-hpux-signed-chksum-'
'\xc4\xd6\xdc\xe4\xf6\xfc\xdf', out)
self.assertIn('misc/regtype-old-v7-signed-chksum-'
'\xc4\xd6\xdc\xe4\xf6\xfc\xdf', out)
# Make sure it prints files separated by one newline without any
# 'ls -l'-like accessories if verbose flag is not being used
# ...
# ustar/conttype
# ustar/regtype
# ...
self.assertRegexpMatches(out, r'ustar/conttype ?\r?\n'
r'ustar/regtype ?\r?\n')
# Make sure it does not print the source of link without verbose flag
self.assertNotIn('link to', out)
self.assertNotIn('->', out)
def test_list_verbose(self):
with test_support.captured_stdout() as t:
self.tar.list(verbose=True)
out = t.getvalue()
# Make sure it prints files separated by one newline with 'ls -l'-like
# accessories if verbose flag is being used
# ...
# ?rw-r--r-- tarfile/tarfile 7011 2003-01-06 07:19:43 ustar/conttype
# ?rw-r--r-- tarfile/tarfile 7011 2003-01-06 07:19:43 ustar/regtype
# ...
self.assertRegexpMatches(out, (r'-rw-r--r-- tarfile/tarfile\s+7011 '
r'\d{4}-\d\d-\d\d\s+\d\d:\d\d:\d\d '
r'ustar/\w+type ?\r?\n') * 2)
# Make sure it prints the source of link with verbose flag
self.assertIn('ustar/symtype -> regtype', out)
self.assertIn('./ustar/linktest2/symtype -> ../linktest1/regtype', out)
self.assertIn('./ustar/linktest2/lnktype link to '
'./ustar/linktest1/regtype', out)
self.assertIn('gnu' + ('/123' * 125) + '/longlink link to gnu' +
('/123' * 125) + '/longname', out)
self.assertIn('pax' + ('/123' * 125) + '/longlink link to pax' +
('/123' * 125) + '/longname', out)
class GzipListTest(ListTest):
tarname = gzipname
mode = "r:gz"
taropen = tarfile.TarFile.gzopen
class Bz2ListTest(ListTest):
tarname = bz2name
mode = "r:bz2"
taropen = tarfile.TarFile.bz2open
class CommonReadTest(ReadTest):
def test_empty_tarfile(self):
# Test for issue6123: Allow opening empty archives.
# This test checks if tarfile.open() is able to open an empty tar
# archive successfully. Note that an empty tar archive is not the
# same as an empty file!
tarfile.open(tmpname, self.mode.replace("r", "w")).close()
try:
tar = tarfile.open(tmpname, self.mode)
tar.getnames()
except tarfile.ReadError:
self.fail("tarfile.open() failed on empty archive")
self.assertListEqual(tar.getmembers(), [])
def test_null_tarfile(self):
# Test for issue6123: Allow opening empty archives.
# This test guarantees that tarfile.open() does not treat an empty
# file as an empty tar archive.
open(tmpname, "wb").close()
self.assertRaises(tarfile.ReadError, tarfile.open, tmpname, self.mode)
self.assertRaises(tarfile.ReadError, tarfile.open, tmpname)
def test_non_existent_tarfile(self):
# Test for issue11513: prevent non-existent gzipped tarfiles raising
# multiple exceptions.
exctype = OSError if '|' in self.mode else IOError
with self.assertRaisesRegexp(exctype, "xxx") as ex:
tarfile.open("xxx", self.mode)
self.assertEqual(ex.exception.errno, errno.ENOENT)
def test_ignore_zeros(self):
# Test TarFile's ignore_zeros option.
if self.mode.endswith(":gz"):
_open = gzip.GzipFile
elif self.mode.endswith(":bz2"):
_open = bz2.BZ2File
else:
_open = open
for char in ('\0', 'a'):
# Test if EOFHeaderError ('\0') and InvalidHeaderError ('a')
# are ignored correctly.
fobj = _open(tmpname, "wb")
fobj.write(char * 1024)
fobj.write(tarfile.TarInfo("foo").tobuf())
fobj.close()
tar = tarfile.open(tmpname, mode="r", ignore_zeros=True)
self.assertListEqual(tar.getnames(), ["foo"],
"ignore_zeros=True should have skipped the %r-blocks" % char)
tar.close()
def test_premature_end_of_archive(self):
for size in (512, 600, 1024, 1200):
with tarfile.open(tmpname, "w:") as tar:
t = tarfile.TarInfo("foo")
t.size = 1024
tar.addfile(t, StringIO.StringIO("a" * 1024))
with open(tmpname, "r+b") as fobj:
fobj.truncate(size)
with tarfile.open(tmpname) as tar:
with self.assertRaisesRegexp(tarfile.ReadError, "unexpected end of data"):
for t in tar:
pass
with tarfile.open(tmpname) as tar:
t = tar.next()
with self.assertRaisesRegexp(tarfile.ReadError, "unexpected end of data"):
tar.extract(t, TEMPDIR)
with self.assertRaisesRegexp(tarfile.ReadError, "unexpected end of data"):
tar.extractfile(t).read()
class MiscReadTest(CommonReadTest):
taropen = tarfile.TarFile.taropen
def test_no_name_argument(self):
fobj = open(self.tarname, "rb")
tar = tarfile.open(fileobj=fobj, mode=self.mode)
self.assertEqual(tar.name, os.path.abspath(fobj.name))
def test_no_name_attribute(self):
data = open(self.tarname, "rb").read()
fobj = StringIO.StringIO(data)
self.assertRaises(AttributeError, getattr, fobj, "name")
tar = tarfile.open(fileobj=fobj, mode=self.mode)
self.assertEqual(tar.name, None)
def test_empty_name_attribute(self):
data = open(self.tarname, "rb").read()
fobj = StringIO.StringIO(data)
fobj.name = ""
tar = tarfile.open(fileobj=fobj, mode=self.mode)
self.assertEqual(tar.name, None)
def test_illegal_mode_arg(self):
with open(tmpname, 'wb'):
pass
self.addCleanup(os.unlink, tmpname)
with self.assertRaisesRegexp(ValueError, 'mode must be '):
tar = self.taropen(tmpname, 'q')
with self.assertRaisesRegexp(ValueError, 'mode must be '):
tar = self.taropen(tmpname, 'rw')
with self.assertRaisesRegexp(ValueError, 'mode must be '):
tar = self.taropen(tmpname, '')
def test_fileobj_with_offset(self):
# Skip the first member and store values from the second member
# of the testtar.
tar = tarfile.open(self.tarname, mode=self.mode)
tar.next()
t = tar.next()
name = t.name
offset = t.offset
data = tar.extractfile(t).read()
tar.close()
# Open the testtar and seek to the offset of the second member.
if self.mode.endswith(":gz"):
_open = gzip.GzipFile
elif self.mode.endswith(":bz2"):
_open = bz2.BZ2File
else:
_open = open
fobj = _open(self.tarname, "rb")
fobj.seek(offset)
# Test if the tarfile starts with the second member.
tar = tar.open(self.tarname, mode="r:", fileobj=fobj)
t = tar.next()
self.assertEqual(t.name, name)
# Read to the end of fileobj and test if seeking back to the
# beginning works.
tar.getmembers()
self.assertEqual(tar.extractfile(t).read(), data,
"seek back did not work")
tar.close()
def test_fail_comp(self):
# For Gzip and Bz2 Tests: fail with a ReadError on an uncompressed file.
if self.mode == "r:":
self.skipTest('needs a gz or bz2 mode')
self.assertRaises(tarfile.ReadError, tarfile.open, tarname, self.mode)
fobj = open(tarname, "rb")
self.assertRaises(tarfile.ReadError, tarfile.open, fileobj=fobj, mode=self.mode)
def test_v7_dirtype(self):
# Test old style dirtype member (bug #1336623):
# Old V7 tars create directory members using an AREGTYPE
# header with a "/" appended to the filename field.
tarinfo = self.tar.getmember("misc/dirtype-old-v7")
self.assertTrue(tarinfo.type == tarfile.DIRTYPE,
"v7 dirtype failed")
def test_xstar_type(self):
# The xstar format stores extra atime and ctime fields inside the
# space reserved for the prefix field. The prefix field must be
# ignored in this case, otherwise it will mess up the name.
try:
self.tar.getmember("misc/regtype-xstar")
except KeyError:
self.fail("failed to find misc/regtype-xstar (mangled prefix?)")
def test_check_members(self):
for tarinfo in self.tar:
self.assertTrue(int(tarinfo.mtime) == 07606136617,
"wrong mtime for %s" % tarinfo.name)
if not tarinfo.name.startswith("ustar/"):
continue
self.assertTrue(tarinfo.uname == "tarfile",
"wrong uname for %s" % tarinfo.name)
def test_find_members(self):
self.assertTrue(self.tar.getmembers()[-1].name == "misc/eof",
"could not find all members")
def test_extract_hardlink(self):
# Test hardlink extraction (e.g. bug #857297).
with tarfile.open(tarname, errorlevel=1, encoding="iso8859-1") as tar:
tar.extract("ustar/regtype", TEMPDIR)
self.addCleanup(os.remove, os.path.join(TEMPDIR, "ustar/regtype"))
tar.extract("ustar/lnktype", TEMPDIR)
self.addCleanup(os.remove, os.path.join(TEMPDIR, "ustar/lnktype"))
with open(os.path.join(TEMPDIR, "ustar/lnktype"), "rb") as f:
data = f.read()
self.assertEqual(md5sum(data), md5_regtype)
tar.extract("ustar/symtype", TEMPDIR)
self.addCleanup(os.remove, os.path.join(TEMPDIR, "ustar/symtype"))
with open(os.path.join(TEMPDIR, "ustar/symtype"), "rb") as f:
data = f.read()
self.assertEqual(md5sum(data), md5_regtype)
def test_extractall(self):
# Test if extractall() correctly restores directory permissions
# and times (see issue1735).
tar = tarfile.open(tarname, encoding="iso8859-1")
directories = [t for t in tar if t.isdir()]
tar.extractall(TEMPDIR, directories)
for tarinfo in directories:
path = os.path.join(TEMPDIR, tarinfo.name)
if sys.platform != "win32":
# Win32 has no support for fine grained permissions.
self.assertEqual(tarinfo.mode & 0777, os.stat(path).st_mode & 0777)
self.assertEqual(tarinfo.mtime, os.path.getmtime(path))
tar.close()
def test_init_close_fobj(self):
# Issue #7341: Close the internal file object in the TarFile
# constructor in case of an error. For the test we rely on
# the fact that opening an empty file raises a ReadError.
empty = os.path.join(TEMPDIR, "empty")
open(empty, "wb").write("")
try:
tar = object.__new__(tarfile.TarFile)
try:
tar.__init__(empty)
except tarfile.ReadError:
self.assertTrue(tar.fileobj.closed)
else:
self.fail("ReadError not raised")
finally:
os.remove(empty)
def test_parallel_iteration(self):
# Issue #16601: Restarting iteration over tarfile continued
# from where it left off.
with tarfile.open(self.tarname) as tar:
for m1, m2 in zip(tar, tar):
self.assertEqual(m1.offset, m2.offset)
self.assertEqual(m1.name, m2.name)
class StreamReadTest(CommonReadTest):
mode="r|"
def test_fileobj_regular_file(self):
tarinfo = self.tar.next() # get "regtype" (can't use getmember)
fobj = self.tar.extractfile(tarinfo)
data = fobj.read()
self.assertTrue((len(data), md5sum(data)) == (tarinfo.size, md5_regtype),
"regular file extraction failed")
def test_provoke_stream_error(self):
tarinfos = self.tar.getmembers()
f = self.tar.extractfile(tarinfos[0]) # read the first member
self.assertRaises(tarfile.StreamError, f.read)
def test_compare_members(self):
tar1 = tarfile.open(tarname, encoding="iso8859-1")
tar2 = self.tar
while True:
t1 = tar1.next()
t2 = tar2.next()
if t1 is None:
break
self.assertTrue(t2 is not None, "stream.next() failed.")
if t2.islnk() or t2.issym():
self.assertRaises(tarfile.StreamError, tar2.extractfile, t2)
continue
v1 = tar1.extractfile(t1)
v2 = tar2.extractfile(t2)
if v1 is None:
continue
self.assertTrue(v2 is not None, "stream.extractfile() failed")
self.assertTrue(v1.read() == v2.read(), "stream extraction failed")
tar1.close()
class DetectReadTest(unittest.TestCase):
def _testfunc_file(self, name, mode):
try:
tarfile.open(name, mode)
except tarfile.ReadError:
self.fail()
def _testfunc_fileobj(self, name, mode):
try:
tarfile.open(name, mode, fileobj=open(name, "rb"))
except tarfile.ReadError:
self.fail()
def _test_modes(self, testfunc):
testfunc(tarname, "r")
testfunc(tarname, "r:")
testfunc(tarname, "r:*")
testfunc(tarname, "r|")
testfunc(tarname, "r|*")
if gzip:
self.assertRaises(tarfile.ReadError, tarfile.open, tarname, mode="r:gz")
self.assertRaises(tarfile.ReadError, tarfile.open, tarname, mode="r|gz")
self.assertRaises(tarfile.ReadError, tarfile.open, gzipname, mode="r:")
self.assertRaises(tarfile.ReadError, tarfile.open, gzipname, mode="r|")
testfunc(gzipname, "r")
testfunc(gzipname, "r:*")
testfunc(gzipname, "r:gz")
testfunc(gzipname, "r|*")
testfunc(gzipname, "r|gz")
if bz2:
self.assertRaises(tarfile.ReadError, tarfile.open, tarname, mode="r:bz2")
self.assertRaises(tarfile.ReadError, tarfile.open, tarname, mode="r|bz2")
self.assertRaises(tarfile.ReadError, tarfile.open, bz2name, mode="r:")
self.assertRaises(tarfile.ReadError, tarfile.open, bz2name, mode="r|")
testfunc(bz2name, "r")
testfunc(bz2name, "r:*")
testfunc(bz2name, "r:bz2")
testfunc(bz2name, "r|*")
testfunc(bz2name, "r|bz2")
def test_detect_file(self):
self._test_modes(self._testfunc_file)
def test_detect_fileobj(self):
self._test_modes(self._testfunc_fileobj)
@unittest.skipUnless(bz2, 'requires bz2')
def test_detect_stream_bz2(self):
# Originally, tarfile's stream detection looked for the string
# "BZh91" at the start of the file. This is incorrect because
# the '9' represents the blocksize (900kB). If the file was
# compressed using another blocksize autodetection fails.
with open(tarname, "rb") as fobj:
data = fobj.read()
# Compress with blocksize 100kB, the file starts with "BZh11".
with bz2.BZ2File(tmpname, "wb", compresslevel=1) as fobj:
fobj.write(data)
self._testfunc_file(tmpname, "r|*")
class MemberReadTest(ReadTest):
def _test_member(self, tarinfo, chksum=None, **kwargs):
if chksum is not None:
self.assertTrue(md5sum(self.tar.extractfile(tarinfo).read()) == chksum,
"wrong md5sum for %s" % tarinfo.name)
kwargs["mtime"] = 07606136617
kwargs["uid"] = 1000
kwargs["gid"] = 100
if "old-v7" not in tarinfo.name:
# V7 tar can't handle alphabetic owners.
kwargs["uname"] = "tarfile"
kwargs["gname"] = "tarfile"
for k, v in kwargs.iteritems():
self.assertTrue(getattr(tarinfo, k) == v,
"wrong value in %s field of %s" % (k, tarinfo.name))
def test_find_regtype(self):
tarinfo = self.tar.getmember("ustar/regtype")
self._test_member(tarinfo, size=7011, chksum=md5_regtype)
def test_find_conttype(self):
tarinfo = self.tar.getmember("ustar/conttype")
self._test_member(tarinfo, size=7011, chksum=md5_regtype)
def test_find_dirtype(self):
tarinfo = self.tar.getmember("ustar/dirtype")
self._test_member(tarinfo, size=0)
def test_find_dirtype_with_size(self):
tarinfo = self.tar.getmember("ustar/dirtype-with-size")
self._test_member(tarinfo, size=255)
def test_find_lnktype(self):
tarinfo = self.tar.getmember("ustar/lnktype")
self._test_member(tarinfo, size=0, linkname="ustar/regtype")
def test_find_symtype(self):
tarinfo = self.tar.getmember("ustar/symtype")
self._test_member(tarinfo, size=0, linkname="regtype")
def test_find_blktype(self):
tarinfo = self.tar.getmember("ustar/blktype")
self._test_member(tarinfo, size=0, devmajor=3, devminor=0)
def test_find_chrtype(self):
tarinfo = self.tar.getmember("ustar/chrtype")
self._test_member(tarinfo, size=0, devmajor=1, devminor=3)
def test_find_fifotype(self):
tarinfo = self.tar.getmember("ustar/fifotype")
self._test_member(tarinfo, size=0)
def test_find_sparse(self):
tarinfo = self.tar.getmember("ustar/sparse")
self._test_member(tarinfo, size=86016, chksum=md5_sparse)
def test_find_umlauts(self):
tarinfo = self.tar.getmember("ustar/umlauts-ÄÖÜäöüß")
self._test_member(tarinfo, size=7011, chksum=md5_regtype)
def test_find_ustar_longname(self):
name = "ustar/" + "12345/" * 39 + "1234567/longname"
self.assertIn(name, self.tar.getnames())
def test_find_regtype_oldv7(self):
tarinfo = self.tar.getmember("misc/regtype-old-v7")
self._test_member(tarinfo, size=7011, chksum=md5_regtype)
def test_find_pax_umlauts(self):
self.tar = tarfile.open(self.tarname, mode=self.mode, encoding="iso8859-1")
tarinfo = self.tar.getmember("pax/umlauts-ÄÖÜäöüß")
self._test_member(tarinfo, size=7011, chksum=md5_regtype)
class LongnameTest(ReadTest):
def test_read_longname(self):
# Test reading of longname (bug #1471427).
longname = self.subdir + "/" + "123/" * 125 + "longname"
try:
tarinfo = self.tar.getmember(longname)
except KeyError:
self.fail("longname not found")
self.assertTrue(tarinfo.type != tarfile.DIRTYPE, "read longname as dirtype")
def test_read_longlink(self):
longname = self.subdir + "/" + "123/" * 125 + "longname"
longlink = self.subdir + "/" + "123/" * 125 + "longlink"
try:
tarinfo = self.tar.getmember(longlink)
except KeyError:
self.fail("longlink not found")
self.assertTrue(tarinfo.linkname == longname, "linkname wrong")
def test_truncated_longname(self):
longname = self.subdir + "/" + "123/" * 125 + "longname"
tarinfo = self.tar.getmember(longname)
offset = tarinfo.offset
self.tar.fileobj.seek(offset)
fobj = StringIO.StringIO(self.tar.fileobj.read(3 * 512))
self.assertRaises(tarfile.ReadError, tarfile.open, name="foo.tar", fileobj=fobj)
def test_header_offset(self):
# Test if the start offset of the TarInfo object includes
# the preceding extended header.
longname = self.subdir + "/" + "123/" * 125 + "longname"
offset = self.tar.getmember(longname).offset
fobj = open(tarname)
fobj.seek(offset)
tarinfo = tarfile.TarInfo.frombuf(fobj.read(512))
self.assertEqual(tarinfo.type, self.longnametype)
class GNUReadTest(LongnameTest):
subdir = "gnu"
longnametype = tarfile.GNUTYPE_LONGNAME
def test_sparse_file(self):
tarinfo1 = self.tar.getmember("ustar/sparse")
fobj1 = self.tar.extractfile(tarinfo1)
tarinfo2 = self.tar.getmember("gnu/sparse")
fobj2 = self.tar.extractfile(tarinfo2)
self.assertTrue(fobj1.read() == fobj2.read(),
"sparse file extraction failed")
class PaxReadTest(LongnameTest):
subdir = "pax"
longnametype = tarfile.XHDTYPE
def test_pax_global_headers(self):
tar = tarfile.open(tarname, encoding="iso8859-1")
tarinfo = tar.getmember("pax/regtype1")
self.assertEqual(tarinfo.uname, "foo")
self.assertEqual(tarinfo.gname, "bar")
self.assertEqual(tarinfo.pax_headers.get("VENDOR.umlauts"), u"ÄÖÜäöüß")
tarinfo = tar.getmember("pax/regtype2")
self.assertEqual(tarinfo.uname, "")
self.assertEqual(tarinfo.gname, "bar")
self.assertEqual(tarinfo.pax_headers.get("VENDOR.umlauts"), u"ÄÖÜäöüß")
tarinfo = tar.getmember("pax/regtype3")
self.assertEqual(tarinfo.uname, "tarfile")
self.assertEqual(tarinfo.gname, "tarfile")
self.assertEqual(tarinfo.pax_headers.get("VENDOR.umlauts"), u"ÄÖÜäöüß")
def test_pax_number_fields(self):
# All following number fields are read from the pax header.
tar = tarfile.open(tarname, encoding="iso8859-1")
tarinfo = tar.getmember("pax/regtype4")
self.assertEqual(tarinfo.size, 7011)
self.assertEqual(tarinfo.uid, 123)
self.assertEqual(tarinfo.gid, 123)
self.assertEqual(tarinfo.mtime, 1041808783.0)
self.assertEqual(type(tarinfo.mtime), float)
self.assertEqual(float(tarinfo.pax_headers["atime"]), 1041808783.0)
self.assertEqual(float(tarinfo.pax_headers["ctime"]), 1041808783.0)
class WriteTestBase(unittest.TestCase):
# Put all write tests in here that are supposed to be tested
# in all possible mode combinations.
def test_fileobj_no_close(self):
fobj = StringIO.StringIO()
tar = tarfile.open(fileobj=fobj, mode=self.mode)
tar.addfile(tarfile.TarInfo("foo"))
tar.close()
self.assertTrue(fobj.closed is False, "external fileobjs must never closed")
# Issue #20238: Incomplete gzip output with mode="w:gz"
data = fobj.getvalue()
del tar
test_support.gc_collect()
self.assertFalse(fobj.closed)
self.assertEqual(data, fobj.getvalue())
class WriteTest(WriteTestBase):
mode = "w:"
def test_100_char_name(self):
# The name field in a tar header stores strings of at most 100 chars.
# If a string is shorter than 100 chars it has to be padded with '\0',
# which implies that a string of exactly 100 chars is stored without
# a trailing '\0'.
name = "0123456789" * 10
tar = tarfile.open(tmpname, self.mode)
t = tarfile.TarInfo(name)
tar.addfile(t)
tar.close()
tar = tarfile.open(tmpname)
self.assertTrue(tar.getnames()[0] == name,
"failed to store 100 char filename")
tar.close()
def test_tar_size(self):
# Test for bug #1013882.
tar = tarfile.open(tmpname, self.mode)
path = os.path.join(TEMPDIR, "file")
fobj = open(path, "wb")
fobj.write("aaa")
fobj.close()
tar.add(path)
tar.close()
self.assertTrue(os.path.getsize(tmpname) > 0,
"tarfile is empty")
# The test_*_size tests test for bug #1167128.
def test_file_size(self):
tar = tarfile.open(tmpname, self.mode)
path = os.path.join(TEMPDIR, "file")
fobj = open(path, "wb")
fobj.close()
tarinfo = tar.gettarinfo(path)
self.assertEqual(tarinfo.size, 0)
fobj = open(path, "wb")
fobj.write("aaa")
fobj.close()
tarinfo = tar.gettarinfo(path)
self.assertEqual(tarinfo.size, 3)
tar.close()
def test_directory_size(self):
path = os.path.join(TEMPDIR, "directory")
os.mkdir(path)
try:
tar = tarfile.open(tmpname, self.mode)
tarinfo = tar.gettarinfo(path)
self.assertEqual(tarinfo.size, 0)
finally:
os.rmdir(path)
def test_link_size(self):
if hasattr(os, "link"):
link = os.path.join(TEMPDIR, "link")
target = os.path.join(TEMPDIR, "link_target")
fobj = open(target, "wb")
fobj.write("aaa")
fobj.close()
os.link(target, link)
try:
tar = tarfile.open(tmpname, self.mode)
# Record the link target in the inodes list.
tar.gettarinfo(target)
tarinfo = tar.gettarinfo(link)
self.assertEqual(tarinfo.size, 0)
finally:
os.remove(target)
os.remove(link)
def test_symlink_size(self):
if hasattr(os, "symlink"):
path = os.path.join(TEMPDIR, "symlink")
os.symlink("link_target", path)
try:
tar = tarfile.open(tmpname, self.mode)
tarinfo = tar.gettarinfo(path)
self.assertEqual(tarinfo.size, 0)
finally:
os.remove(path)
def test_add_self(self):
# Test for #1257255.
dstname = os.path.abspath(tmpname)
tar = tarfile.open(tmpname, self.mode)
self.assertTrue(tar.name == dstname, "archive name must be absolute")
tar.add(dstname)
self.assertTrue(tar.getnames() == [], "added the archive to itself")
cwd = os.getcwd()
os.chdir(TEMPDIR)
tar.add(dstname)
os.chdir(cwd)
self.assertTrue(tar.getnames() == [], "added the archive to itself")
def test_exclude(self):
tempdir = os.path.join(TEMPDIR, "exclude")
os.mkdir(tempdir)
try:
for name in ("foo", "bar", "baz"):
name = os.path.join(tempdir, name)
open(name, "wb").close()
exclude = os.path.isfile
tar = tarfile.open(tmpname, self.mode, encoding="iso8859-1")
with test_support.check_warnings(("use the filter argument",
DeprecationWarning)):
tar.add(tempdir, arcname="empty_dir", exclude=exclude)
tar.close()
tar = tarfile.open(tmpname, "r")
self.assertEqual(len(tar.getmembers()), 1)
self.assertEqual(tar.getnames()[0], "empty_dir")
finally:
shutil.rmtree(tempdir)
def test_filter(self):
tempdir = os.path.join(TEMPDIR, "filter")
os.mkdir(tempdir)
try:
for name in ("foo", "bar", "baz"):
name = os.path.join(tempdir, name)
open(name, "wb").close()
def filter(tarinfo):
if os.path.basename(tarinfo.name) == "bar":
return
tarinfo.uid = 123
tarinfo.uname = "foo"
return tarinfo
tar = tarfile.open(tmpname, self.mode, encoding="iso8859-1")
tar.add(tempdir, arcname="empty_dir", filter=filter)
tar.close()
tar = tarfile.open(tmpname, "r")
for tarinfo in tar:
self.assertEqual(tarinfo.uid, 123)
self.assertEqual(tarinfo.uname, "foo")
self.assertEqual(len(tar.getmembers()), 3)
tar.close()
finally:
shutil.rmtree(tempdir)
# Guarantee that stored pathnames are not modified. Don't
# remove ./ or ../ or double slashes. Still make absolute
# pathnames relative.
# For details see bug #6054.
def _test_pathname(self, path, cmp_path=None, dir=False):
# Create a tarfile with an empty member named path
# and compare the stored name with the original.
foo = os.path.join(TEMPDIR, "foo")
if not dir:
open(foo, "w").close()
else:
os.mkdir(foo)
tar = tarfile.open(tmpname, self.mode)
tar.add(foo, arcname=path)
tar.close()
tar = tarfile.open(tmpname, "r")
t = tar.next()
tar.close()
if not dir:
os.remove(foo)
else:
os.rmdir(foo)
self.assertEqual(t.name, cmp_path or path.replace(os.sep, "/"))
def test_pathnames(self):
self._test_pathname("foo")
self._test_pathname(os.path.join("foo", ".", "bar"))
self._test_pathname(os.path.join("foo", "..", "bar"))
self._test_pathname(os.path.join(".", "foo"))
self._test_pathname(os.path.join(".", "foo", "."))
self._test_pathname(os.path.join(".", "foo", ".", "bar"))
self._test_pathname(os.path.join(".", "foo", "..", "bar"))
self._test_pathname(os.path.join(".", "foo", "..", "bar"))
self._test_pathname(os.path.join("..", "foo"))
self._test_pathname(os.path.join("..", "foo", ".."))
self._test_pathname(os.path.join("..", "foo", ".", "bar"))
self._test_pathname(os.path.join("..", "foo", "..", "bar"))
self._test_pathname("foo" + os.sep + os.sep + "bar")
self._test_pathname("foo" + os.sep + os.sep, "foo", dir=True)
def test_abs_pathnames(self):
if sys.platform == "win32":
self._test_pathname("C:\\foo", "foo")
else:
self._test_pathname("/foo", "foo")
self._test_pathname("///foo", "foo")
def test_cwd(self):
# Test adding the current working directory.
with support.change_cwd(TEMPDIR):
open("foo", "w").close()
tar = tarfile.open(tmpname, self.mode)
tar.add(".")
tar.close()
tar = tarfile.open(tmpname, "r")
for t in tar:
self.assertTrue(t.name == "." or t.name.startswith("./"))
tar.close()
@unittest.skipUnless(hasattr(os, 'symlink'), "needs os.symlink")
def test_extractall_symlinks(self):
# Test if extractall works properly when tarfile contains symlinks
tempdir = os.path.join(TEMPDIR, "testsymlinks")
temparchive = os.path.join(TEMPDIR, "testsymlinks.tar")
os.mkdir(tempdir)
try:
source_file = os.path.join(tempdir,'source')
target_file = os.path.join(tempdir,'symlink')
with open(source_file,'w') as f:
f.write('something\n')
os.symlink(source_file, target_file)
tar = tarfile.open(temparchive,'w')
tar.add(source_file, arcname=os.path.basename(source_file))
tar.add(target_file, arcname=os.path.basename(target_file))
tar.close()
# Let's extract it to the location which contains the symlink
tar = tarfile.open(temparchive,'r')
# this should not raise OSError: [Errno 17] File exists
try:
tar.extractall(path=tempdir)
except OSError:
self.fail("extractall failed with symlinked files")
finally:
tar.close()
finally:
os.unlink(temparchive)
shutil.rmtree(tempdir)
@unittest.skipUnless(hasattr(os, 'symlink'), "needs os.symlink")
def test_extractall_broken_symlinks(self):
# Test if extractall works properly when tarfile contains broken
# symlinks
tempdir = os.path.join(TEMPDIR, "testsymlinks")
temparchive = os.path.join(TEMPDIR, "testsymlinks.tar")
os.mkdir(tempdir)
try:
source_file = os.path.join(tempdir,'source')
target_file = os.path.join(tempdir,'symlink')
with open(source_file,'w') as f:
f.write('something\n')
os.symlink(source_file, target_file)
tar = tarfile.open(temparchive,'w')
tar.add(target_file, arcname=os.path.basename(target_file))
tar.close()
# remove the real file
os.unlink(source_file)
# Let's extract it to the location which contains the symlink
tar = tarfile.open(temparchive,'r')
# this should not raise OSError: [Errno 17] File exists
try:
tar.extractall(path=tempdir)
except OSError:
self.fail("extractall failed with broken symlinked files")
finally:
tar.close()
finally:
os.unlink(temparchive)
shutil.rmtree(tempdir)
@unittest.skipUnless(hasattr(os, 'link'), "needs os.link")
def test_extractall_hardlinks(self):
# Test if extractall works properly when tarfile contains symlinks
tempdir = os.path.join(TEMPDIR, "testsymlinks")
temparchive = os.path.join(TEMPDIR, "testsymlinks.tar")
os.mkdir(tempdir)
try:
source_file = os.path.join(tempdir,'source')
target_file = os.path.join(tempdir,'symlink')
with open(source_file,'w') as f:
f.write('something\n')
os.link(source_file, target_file)
tar = tarfile.open(temparchive,'w')
tar.add(source_file, arcname=os.path.basename(source_file))
tar.add(target_file, arcname=os.path.basename(target_file))
tar.close()
# Let's extract it to the location which contains the symlink
tar = tarfile.open(temparchive,'r')
# this should not raise OSError: [Errno 17] File exists
try:
tar.extractall(path=tempdir)
except OSError:
self.fail("extractall failed with linked files")
finally:
tar.close()
finally:
os.unlink(temparchive)
shutil.rmtree(tempdir)
def test_open_nonwritable_fileobj(self):
for exctype in IOError, EOFError, RuntimeError:
class BadFile(StringIO.StringIO):
first = True
def write(self, data):
if self.first:
self.first = False
raise exctype
f = BadFile()
with self.assertRaises(exctype):
tar = tarfile.open(tmpname, self.mode, fileobj=f,
format=tarfile.PAX_FORMAT,
pax_headers={'non': 'empty'})
self.assertFalse(f.closed)
class StreamWriteTest(WriteTestBase):
mode = "w|"
def test_stream_padding(self):
# Test for bug #1543303.
tar = tarfile.open(tmpname, self.mode)
tar.close()
if self.mode.endswith("gz"):
fobj = gzip.GzipFile(tmpname)
data = fobj.read()
fobj.close()
elif self.mode.endswith("bz2"):
dec = bz2.BZ2Decompressor()
data = open(tmpname, "rb").read()
data = dec.decompress(data)
self.assertTrue(len(dec.unused_data) == 0,
"found trailing data")
else:
fobj = open(tmpname, "rb")
data = fobj.read()
fobj.close()
self.assertTrue(data.count("\0") == tarfile.RECORDSIZE,
"incorrect zero padding")
@unittest.skipIf(sys.platform == 'win32', 'not appropriate for Windows')
@unittest.skipUnless(hasattr(os, 'umask'), 'requires os.umask')
def test_file_mode(self):
# Test for issue #8464: Create files with correct
# permissions.
if os.path.exists(tmpname):
os.remove(tmpname)
original_umask = os.umask(0022)
try:
tar = tarfile.open(tmpname, self.mode)
tar.close()
mode = os.stat(tmpname).st_mode & 0777
self.assertEqual(mode, 0644, "wrong file permissions")
finally:
os.umask(original_umask)
def test_issue13639(self):
try:
with tarfile.open(unicode(tmpname, sys.getfilesystemencoding()), self.mode):
pass
except UnicodeDecodeError:
self.fail("_Stream failed to write unicode filename")
class GNUWriteTest(unittest.TestCase):
# This testcase checks for correct creation of GNU Longname
# and Longlink extended headers (cp. bug #812325).
def _length(self, s):
blocks, remainder = divmod(len(s) + 1, 512)
if remainder:
blocks += 1
return blocks * 512
def _calc_size(self, name, link=None):
# Initial tar header
count = 512
if len(name) > tarfile.LENGTH_NAME:
# GNU longname extended header + longname
count += 512
count += self._length(name)
if link is not None and len(link) > tarfile.LENGTH_LINK:
# GNU longlink extended header + longlink
count += 512
count += self._length(link)
return count
def _test(self, name, link=None):
tarinfo = tarfile.TarInfo(name)
if link:
tarinfo.linkname = link
tarinfo.type = tarfile.LNKTYPE
tar = tarfile.open(tmpname, "w")
tar.format = tarfile.GNU_FORMAT
tar.addfile(tarinfo)
v1 = self._calc_size(name, link)
v2 = tar.offset
self.assertTrue(v1 == v2, "GNU longname/longlink creation failed")
tar.close()
tar = tarfile.open(tmpname)
member = tar.next()
self.assertIsNotNone(member,
"unable to read longname member")
self.assertEqual(tarinfo.name, member.name,
"unable to read longname member")
self.assertEqual(tarinfo.linkname, member.linkname,
"unable to read longname member")
def test_longname_1023(self):
self._test(("longnam/" * 127) + "longnam")
def test_longname_1024(self):
self._test(("longnam/" * 127) + "longname")
def test_longname_1025(self):
self._test(("longnam/" * 127) + "longname_")
def test_longlink_1023(self):
self._test("name", ("longlnk/" * 127) + "longlnk")
def test_longlink_1024(self):
self._test("name", ("longlnk/" * 127) + "longlink")
def test_longlink_1025(self):
self._test("name", ("longlnk/" * 127) + "longlink_")
def test_longnamelink_1023(self):
self._test(("longnam/" * 127) + "longnam",
("longlnk/" * 127) + "longlnk")
def test_longnamelink_1024(self):
self._test(("longnam/" * 127) + "longname",
("longlnk/" * 127) + "longlink")
def test_longnamelink_1025(self):
self._test(("longnam/" * 127) + "longname_",
("longlnk/" * 127) + "longlink_")
class HardlinkTest(unittest.TestCase):
# Test the creation of LNKTYPE (hardlink) members in an archive.
def setUp(self):
self.foo = os.path.join(TEMPDIR, "foo")
self.bar = os.path.join(TEMPDIR, "bar")
fobj = open(self.foo, "wb")
fobj.write("foo")
fobj.close()
os.link(self.foo, self.bar)
self.tar = tarfile.open(tmpname, "w")
self.tar.add(self.foo)
def tearDown(self):
self.tar.close()
os.remove(self.foo)
os.remove(self.bar)
def test_add_twice(self):
# The same name will be added as a REGTYPE every
# time regardless of st_nlink.
tarinfo = self.tar.gettarinfo(self.foo)
self.assertTrue(tarinfo.type == tarfile.REGTYPE,
"add file as regular failed")
def test_add_hardlink(self):
tarinfo = self.tar.gettarinfo(self.bar)
self.assertTrue(tarinfo.type == tarfile.LNKTYPE,
"add file as hardlink failed")
def test_dereference_hardlink(self):
self.tar.dereference = True
tarinfo = self.tar.gettarinfo(self.bar)
self.assertTrue(tarinfo.type == tarfile.REGTYPE,
"dereferencing hardlink failed")
class PaxWriteTest(GNUWriteTest):
def _test(self, name, link=None):
# See GNUWriteTest.
tarinfo = tarfile.TarInfo(name)
if link:
tarinfo.linkname = link
tarinfo.type = tarfile.LNKTYPE
tar = tarfile.open(tmpname, "w", format=tarfile.PAX_FORMAT)
tar.addfile(tarinfo)
tar.close()
tar = tarfile.open(tmpname)
if link:
l = tar.getmembers()[0].linkname
self.assertTrue(link == l, "PAX longlink creation failed")
else:
n = tar.getmembers()[0].name
self.assertTrue(name == n, "PAX longname creation failed")
def test_pax_global_header(self):
pax_headers = {
u"foo": u"bar",
u"uid": u"0",
u"mtime": u"1.23",
u"test": u"äöü",
u"äöü": u"test"}
tar = tarfile.open(tmpname, "w", format=tarfile.PAX_FORMAT,
pax_headers=pax_headers)
tar.addfile(tarfile.TarInfo("test"))
tar.close()
# Test if the global header was written correctly.
tar = tarfile.open(tmpname, encoding="iso8859-1")
self.assertEqual(tar.pax_headers, pax_headers)
self.assertEqual(tar.getmembers()[0].pax_headers, pax_headers)
# Test if all the fields are unicode.
for key, val in tar.pax_headers.iteritems():
self.assertTrue(type(key) is unicode)
self.assertTrue(type(val) is unicode)
if key in tarfile.PAX_NUMBER_FIELDS:
try:
tarfile.PAX_NUMBER_FIELDS[key](val)
except (TypeError, ValueError):
self.fail("unable to convert pax header field")
def test_pax_extended_header(self):
# The fields from the pax header have priority over the
# TarInfo.
pax_headers = {u"path": u"foo", u"uid": u"123"}
tar = tarfile.open(tmpname, "w", format=tarfile.PAX_FORMAT, encoding="iso8859-1")
t = tarfile.TarInfo()
t.name = u"äöü" # non-ASCII
t.uid = 8**8 # too large
t.pax_headers = pax_headers
tar.addfile(t)
tar.close()
tar = tarfile.open(tmpname, encoding="iso8859-1")
t = tar.getmembers()[0]
self.assertEqual(t.pax_headers, pax_headers)
self.assertEqual(t.name, "foo")
self.assertEqual(t.uid, 123)
class UstarUnicodeTest(unittest.TestCase):
# All *UnicodeTests FIXME
format = tarfile.USTAR_FORMAT
def test_iso8859_1_filename(self):
self._test_unicode_filename("iso8859-1")
def test_utf7_filename(self):
self._test_unicode_filename("utf7")
def test_utf8_filename(self):
self._test_unicode_filename("utf8")
def _test_unicode_filename(self, encoding):
tar = tarfile.open(tmpname, "w", format=self.format, encoding=encoding, errors="strict")
name = u"äöü"
tar.addfile(tarfile.TarInfo(name))
tar.close()
tar = tarfile.open(tmpname, encoding=encoding)
self.assertTrue(type(tar.getnames()[0]) is not unicode)
self.assertEqual(tar.getmembers()[0].name, name.encode(encoding))
tar.close()
def test_unicode_filename_error(self):
tar = tarfile.open(tmpname, "w", format=self.format, encoding="ascii", errors="strict")
tarinfo = tarfile.TarInfo()
tarinfo.name = "äöü"
if self.format == tarfile.PAX_FORMAT:
self.assertRaises(UnicodeError, tar.addfile, tarinfo)
else:
tar.addfile(tarinfo)
tarinfo.name = u"äöü"
self.assertRaises(UnicodeError, tar.addfile, tarinfo)
tarinfo.name = "foo"
tarinfo.uname = u"äöü"
self.assertRaises(UnicodeError, tar.addfile, tarinfo)
def test_unicode_argument(self):
tar = tarfile.open(tarname, "r", encoding="iso8859-1", errors="strict")
for t in tar:
self.assertTrue(type(t.name) is str)
self.assertTrue(type(t.linkname) is str)
self.assertTrue(type(t.uname) is str)
self.assertTrue(type(t.gname) is str)
tar.close()
def test_uname_unicode(self):
for name in (u"äöü", "äöü"):
t = tarfile.TarInfo("foo")
t.uname = name
t.gname = name
fobj = StringIO.StringIO()
tar = tarfile.open("foo.tar", mode="w", fileobj=fobj, format=self.format, encoding="iso8859-1")
tar.addfile(t)
tar.close()
fobj.seek(0)
tar = tarfile.open("foo.tar", fileobj=fobj, encoding="iso8859-1")
t = tar.getmember("foo")
self.assertEqual(t.uname, "äöü")
self.assertEqual(t.gname, "äöü")
class GNUUnicodeTest(UstarUnicodeTest):
format = tarfile.GNU_FORMAT
class PaxUnicodeTest(UstarUnicodeTest):
format = tarfile.PAX_FORMAT
def _create_unicode_name(self, name):
tar = tarfile.open(tmpname, "w", format=self.format)
t = tarfile.TarInfo()
t.pax_headers["path"] = name
tar.addfile(t)
tar.close()
def test_error_handlers(self):
# Test if the unicode error handlers work correctly for characters
# that cannot be expressed in a given encoding.
self._create_unicode_name(u"äöü")
for handler, name in (("utf-8", u"äöü".encode("utf8")),
("replace", "???"), ("ignore", "")):
tar = tarfile.open(tmpname, format=self.format, encoding="ascii",
errors=handler)
self.assertEqual(tar.getnames()[0], name)
self.assertRaises(UnicodeError, tarfile.open, tmpname,
encoding="ascii", errors="strict")
def test_error_handler_utf8(self):
# Create a pathname that has one component representable using
# iso8859-1 and the other only in iso8859-15.
self._create_unicode_name(u"äöü/¤")
tar = tarfile.open(tmpname, format=self.format, encoding="iso8859-1",
errors="utf-8")
self.assertEqual(tar.getnames()[0], "äöü/" + u"¤".encode("utf8"))
class AppendTest(unittest.TestCase):
# Test append mode (cp. patch #1652681).
def setUp(self):
self.tarname = tmpname
if os.path.exists(self.tarname):
os.remove(self.tarname)
def _add_testfile(self, fileobj=None):
tar = tarfile.open(self.tarname, "a", fileobj=fileobj)
tar.addfile(tarfile.TarInfo("bar"))
tar.close()
def _create_testtar(self, mode="w:"):
src = tarfile.open(tarname, encoding="iso8859-1")
t = src.getmember("ustar/regtype")
t.name = "foo"
f = src.extractfile(t)
tar = tarfile.open(self.tarname, mode)
tar.addfile(t, f)
tar.close()
def _test(self, names=["bar"], fileobj=None):
tar = tarfile.open(self.tarname, fileobj=fileobj)
self.assertEqual(tar.getnames(), names)
def test_non_existing(self):
self._add_testfile()
self._test()
def test_empty(self):
tarfile.open(self.tarname, "w:").close()
self._add_testfile()
self._test()
def test_empty_fileobj(self):
fobj = StringIO.StringIO("\0" * 1024)
self._add_testfile(fobj)
fobj.seek(0)
self._test(fileobj=fobj)
def test_fileobj(self):
self._create_testtar()
data = open(self.tarname).read()
fobj = StringIO.StringIO(data)
self._add_testfile(fobj)
fobj.seek(0)
self._test(names=["foo", "bar"], fileobj=fobj)
def test_existing(self):
self._create_testtar()
self._add_testfile()
self._test(names=["foo", "bar"])
@unittest.skipUnless(gzip, 'requires gzip')
def test_append_gz(self):
self._create_testtar("w:gz")
self.assertRaises(tarfile.ReadError, tarfile.open, tmpname, "a")
@unittest.skipUnless(bz2, 'requires bz2')
def test_append_bz2(self):
self._create_testtar("w:bz2")
self.assertRaises(tarfile.ReadError, tarfile.open, tmpname, "a")
# Append mode is supposed to fail if the tarfile to append to
# does not end with a zero block.
def _test_error(self, data):
open(self.tarname, "wb").write(data)
self.assertRaises(tarfile.ReadError, self._add_testfile)
def test_null(self):
self._test_error("")
def test_incomplete(self):
self._test_error("\0" * 13)
def test_premature_eof(self):
data = tarfile.TarInfo("foo").tobuf()
self._test_error(data)
def test_trailing_garbage(self):
data = tarfile.TarInfo("foo").tobuf()
self._test_error(data + "\0" * 13)
def test_invalid(self):
self._test_error("a" * 512)
class LimitsTest(unittest.TestCase):
def test_ustar_limits(self):
# 100 char name
tarinfo = tarfile.TarInfo("0123456789" * 10)
tarinfo.tobuf(tarfile.USTAR_FORMAT)
# 101 char name that cannot be stored
tarinfo = tarfile.TarInfo("0123456789" * 10 + "0")
self.assertRaises(ValueError, tarinfo.tobuf, tarfile.USTAR_FORMAT)
# 256 char name with a slash at pos 156
tarinfo = tarfile.TarInfo("123/" * 62 + "longname")
tarinfo.tobuf(tarfile.USTAR_FORMAT)
# 256 char name that cannot be stored
tarinfo = tarfile.TarInfo("1234567/" * 31 + "longname")
self.assertRaises(ValueError, tarinfo.tobuf, tarfile.USTAR_FORMAT)
# 512 char name
tarinfo = tarfile.TarInfo("123/" * 126 + "longname")
self.assertRaises(ValueError, tarinfo.tobuf, tarfile.USTAR_FORMAT)
# 512 char linkname
tarinfo = tarfile.TarInfo("longlink")
tarinfo.linkname = "123/" * 126 + "longname"
self.assertRaises(ValueError, tarinfo.tobuf, tarfile.USTAR_FORMAT)
# uid > 8 digits
tarinfo = tarfile.TarInfo("name")
tarinfo.uid = 010000000
self.assertRaises(ValueError, tarinfo.tobuf, tarfile.USTAR_FORMAT)
def test_gnu_limits(self):
tarinfo = tarfile.TarInfo("123/" * 126 + "longname")
tarinfo.tobuf(tarfile.GNU_FORMAT)
tarinfo = tarfile.TarInfo("longlink")
tarinfo.linkname = "123/" * 126 + "longname"
tarinfo.tobuf(tarfile.GNU_FORMAT)
# uid >= 256 ** 7
tarinfo = tarfile.TarInfo("name")
tarinfo.uid = 04000000000000000000L
self.assertRaises(ValueError, tarinfo.tobuf, tarfile.GNU_FORMAT)
def test_pax_limits(self):
tarinfo = tarfile.TarInfo("123/" * 126 + "longname")
tarinfo.tobuf(tarfile.PAX_FORMAT)
tarinfo = tarfile.TarInfo("longlink")
tarinfo.linkname = "123/" * 126 + "longname"
tarinfo.tobuf(tarfile.PAX_FORMAT)
tarinfo = tarfile.TarInfo("name")
tarinfo.uid = 04000000000000000000L
tarinfo.tobuf(tarfile.PAX_FORMAT)
class MiscTest(unittest.TestCase):
def test_read_number_fields(self):
# Issue 24514: Test if empty number fields are converted to zero.
self.assertEqual(tarfile.nti("\0"), 0)
self.assertEqual(tarfile.nti(" \0"), 0)
class ContextManagerTest(unittest.TestCase):
def test_basic(self):
with tarfile.open(tarname) as tar:
self.assertFalse(tar.closed, "closed inside runtime context")
self.assertTrue(tar.closed, "context manager failed")
def test_closed(self):
# The __enter__() method is supposed to raise IOError
# if the TarFile object is already closed.
tar = tarfile.open(tarname)
tar.close()
with self.assertRaises(IOError):
with tar:
pass
def test_exception(self):
# Test if the IOError exception is passed through properly.
with self.assertRaises(Exception) as exc:
with tarfile.open(tarname) as tar:
raise IOError
self.assertIsInstance(exc.exception, IOError,
"wrong exception raised in context manager")
self.assertTrue(tar.closed, "context manager failed")
def test_no_eof(self):
# __exit__() must not write end-of-archive blocks if an
# exception was raised.
try:
with tarfile.open(tmpname, "w") as tar:
raise Exception
except:
pass
self.assertEqual(os.path.getsize(tmpname), 0,
"context manager wrote an end-of-archive block")
self.assertTrue(tar.closed, "context manager failed")
def test_eof(self):
# __exit__() must write end-of-archive blocks, i.e. call
# TarFile.close() if there was no error.
with tarfile.open(tmpname, "w"):
pass
self.assertNotEqual(os.path.getsize(tmpname), 0,
"context manager wrote no end-of-archive block")
def test_fileobj(self):
# Test that __exit__() did not close the external file
# object.
fobj = open(tmpname, "wb")
try:
with tarfile.open(fileobj=fobj, mode="w") as tar:
raise Exception
except:
pass
self.assertFalse(fobj.closed, "external file object was closed")
self.assertTrue(tar.closed, "context manager failed")
fobj.close()
class LinkEmulationTest(ReadTest):
# Test for issue #8741 regression. On platforms that do not support
# symbolic or hard links tarfile tries to extract these types of members as
# the regular files they point to.
def _test_link_extraction(self, name):
self.tar.extract(name, TEMPDIR)
data = open(os.path.join(TEMPDIR, name), "rb").read()
self.assertEqual(md5sum(data), md5_regtype)
def test_hardlink_extraction1(self):
self._test_link_extraction("ustar/lnktype")
def test_hardlink_extraction2(self):
self._test_link_extraction("./ustar/linktest2/lnktype")
def test_symlink_extraction1(self):
self._test_link_extraction("ustar/symtype")
def test_symlink_extraction2(self):
self._test_link_extraction("./ustar/linktest2/symtype")
class GzipMiscReadTest(MiscReadTest):
tarname = gzipname
mode = "r:gz"
taropen = tarfile.TarFile.gzopen
class GzipUstarReadTest(UstarReadTest):
tarname = gzipname
mode = "r:gz"
class GzipStreamReadTest(StreamReadTest):
tarname = gzipname
mode = "r|gz"
class GzipWriteTest(WriteTest):
mode = "w:gz"
class GzipStreamWriteTest(StreamWriteTest):
mode = "w|gz"
class Bz2MiscReadTest(MiscReadTest):
tarname = bz2name
mode = "r:bz2"
taropen = tarfile.TarFile.bz2open
class Bz2UstarReadTest(UstarReadTest):
tarname = bz2name
mode = "r:bz2"
class Bz2StreamReadTest(StreamReadTest):
tarname = bz2name
mode = "r|bz2"
class Bz2WriteTest(WriteTest):
mode = "w:bz2"
class Bz2StreamWriteTest(StreamWriteTest):
mode = "w|bz2"
class Bz2PartialReadTest(unittest.TestCase):
# Issue5068: The _BZ2Proxy.read() method loops forever
# on an empty or partial bzipped file.
def _test_partial_input(self, mode):
class MyStringIO(StringIO.StringIO):
hit_eof = False
def read(self, n):
if self.hit_eof:
raise AssertionError("infinite loop detected in tarfile.open()")
self.hit_eof = self.pos == self.len
return StringIO.StringIO.read(self, n)
def seek(self, *args):
self.hit_eof = False
return StringIO.StringIO.seek(self, *args)
data = bz2.compress(tarfile.TarInfo("foo").tobuf())
for x in range(len(data) + 1):
try:
tarfile.open(fileobj=MyStringIO(data[:x]), mode=mode)
except tarfile.ReadError:
pass # we have no interest in ReadErrors
def test_partial_input(self):
self._test_partial_input("r")
def test_partial_input_bz2(self):
self._test_partial_input("r:bz2")
def test_main():
os.makedirs(TEMPDIR)
tests = [
UstarReadTest,
MiscReadTest,
StreamReadTest,
DetectReadTest,
MemberReadTest,
GNUReadTest,
PaxReadTest,
ListTest,
WriteTest,
StreamWriteTest,
GNUWriteTest,
PaxWriteTest,
UstarUnicodeTest,
GNUUnicodeTest,
PaxUnicodeTest,
AppendTest,
LimitsTest,
MiscTest,
ContextManagerTest,
]
if hasattr(os, "link"):
tests.append(HardlinkTest)
else:
tests.append(LinkEmulationTest)
fobj = open(tarname, "rb")
data = fobj.read()
fobj.close()
if gzip:
# Create testtar.tar.gz and add gzip-specific tests.
tar = gzip.open(gzipname, "wb")
tar.write(data)
tar.close()
tests += [
GzipMiscReadTest,
GzipUstarReadTest,
GzipStreamReadTest,
GzipListTest,
GzipWriteTest,
GzipStreamWriteTest,
]
if bz2:
# Create testtar.tar.bz2 and add bz2-specific tests.
tar = bz2.BZ2File(bz2name, "wb")
tar.write(data)
tar.close()
tests += [
Bz2MiscReadTest,
Bz2UstarReadTest,
Bz2StreamReadTest,
Bz2ListTest,
Bz2WriteTest,
Bz2StreamWriteTest,
Bz2PartialReadTest,
]
try:
test_support.run_unittest(*tests)
finally:
if os.path.exists(TEMPDIR):
shutil.rmtree(TEMPDIR)
if __name__ == "__main__":
test_main()