Nexus File Manager

Quick: ⬆️ Parent 🌐 Root 🏠 Home 🌍 WWW 📁 Temp ⚙️ Etc

⚡ WordPress Admin 🔄 Refresh

✏️ test_tarfile.py

← Back

import sys
import os
import shutil
import StringIO
from binascii import unhexlify
from hashlib import md5
from random import Random
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")
        with open(os.path.join(TEMPDIR, "ustar/regtype"), "rU") as fobj1:
            lines1 = fobj1.readlines()
        fobj2 = self.tar.extractfile(tarinfo)

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")
        with open(os.path.join(TEMPDIR, "ustar/regtype"), "rU") as fobj1:
            lines1 = fobj1.readlines()
        fobj2 = self.tar.extractfile(tarinfo)
        lines2 = [line for line in fobj2]
        self.assertTrue(lines1 == lines2,
                     "fileobj.__iter__() failed")

def test_fileobj_seek(self):
        self.tar.extract("ustar/regtype", TEMPDIR)
        with open(os.path.join(TEMPDIR, "ustar/regtype"), "rb") as fobj:
            data = fobj.read()

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!
        with tarfile.open(tmpname, self.mode.replace("r", "w")):
            pass
        try:
            tar = tarfile.open(tmpname, self.mode)
            tar.getnames()
        except tarfile.ReadError:
            self.fail("tarfile.open() failed on empty archive")
        else:
            self.assertListEqual(tar.getmembers(), [])
        finally:
            tar.close()

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.
        with open(tmpname, "wb"):
            pass
        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

# generate 512 pseudorandom bytes
        data = unhexlify('%1024x' % Random(0).getrandbits(512*8))
        for char in ('\0', 'a'):
            # Test if EOFHeaderError ('\0') and InvalidHeaderError ('a')
            # are ignored correctly.
            with _open(tmpname, "wb") as fobj:
                fobj.write(char * 1024)
                tarinfo = tarfile.TarInfo("foo")
                tarinfo.size = len(data)
                fobj.write(tarinfo.tobuf())
                fobj.write(data)

tar = tarfile.open(tmpname, mode="r", ignore_zeros=True)
            try:
                self.assertListEqual(tar.getnames(), ["foo"],
                    "ignore_zeros=True should have skipped the %r-blocks" % char)
            finally:
                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_length_zero_header(self):
        # bpo-39017 (CVE-2019-20907): reading a zero-length header should fail
        # with an exception
        with self.assertRaisesRegexp(tarfile.ReadError, "file could not be opened successfully"):
            with tarfile.open(support.findfile('recursion.tar')) as tar:
                pass

def test_no_name_argument(self):
        with open(self.tarname, "rb") as fobj:
            tar = tarfile.open(fileobj=fobj, mode=self.mode)
            self.assertEqual(tar.name, os.path.abspath(fobj.name))

def test_no_name_attribute(self):
        with open(self.tarname, "rb") as fobj:
            data = fobj.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):
        with open(self.tarname, "rb") as fobj:
            data = fobj.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)
        try:
            tar.next()
            t = tar.next()
            name = t.name
            offset = t.offset
            data = tar.extractfile(t).read()
        finally:
            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")
        try:
            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()
        finally:
            fobj.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)
        with open(tarname, "rb") as fobj:
            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")
        try:
            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))
        finally:
            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")
        with open(empty, "wb") as fobj:
            fobj.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:
            support.unlink(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")
        try:
            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")
        finally:
            tar1.close()

class DetectReadTest(unittest.TestCase):

def _testfunc_file(self, name, mode):
        try:
            tar = tarfile.open(name, mode)
        except tarfile.ReadError:
            self.fail()
        else:
            tar.close()

def _testfunc_fileobj(self, name, mode):
        try:
            tar = tarfile.open(name, mode, fileobj=open(name, "rb"))
        except tarfile.ReadError:
            self.fail()
        else:
            tar.close()

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-\xc4\xd6\xdc\xe4\xf6\xfc\xdf")
        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-\xc4\xd6\xdc\xe4\xf6\xfc\xdf")
        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")
        try:

tarinfo = tar.getmember("pax/regtype1")
            self.assertEqual(tarinfo.uname, "foo")
            self.assertEqual(tarinfo.gname, "bar")
            self.assertEqual(tarinfo.pax_headers.get("VENDOR.umlauts"), u"\xc4\xd6\xdc\xe4\xf6\xfc\xdf")

tarinfo = tar.getmember("pax/regtype2")
            self.assertEqual(tarinfo.uname, "")
            self.assertEqual(tarinfo.gname, "bar")
            self.assertEqual(tarinfo.pax_headers.get("VENDOR.umlauts"), u"\xc4\xd6\xdc\xe4\xf6\xfc\xdf")

tarinfo = tar.getmember("pax/regtype3")
            self.assertEqual(tarinfo.uname, "tarfile")
            self.assertEqual(tarinfo.gname, "tarfile")
            self.assertEqual(tarinfo.pax_headers.get("VENDOR.umlauts"), u"\xc4\xd6\xdc\xe4\xf6\xfc\xdf")
        finally:
            tar.close()

def test_pax_number_fields(self):
        # All following number fields are read from the pax header.
        tar = tarfile.open(tarname, encoding="iso8859-1")
        try:
            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)
        finally:
            tar.close()

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)
        try:
            t = tarfile.TarInfo(name)
            tar.addfile(t)
        finally:
            tar.close()

tar = tarfile.open(tmpname)
        try:
            self.assertTrue(tar.getnames()[0] == name,
                    "failed to store 100 char filename")
        finally:
            tar.close()

def test_tar_size(self):
        # Test for bug #1013882.
        tar = tarfile.open(tmpname, self.mode)
        try:
            path = os.path.join(TEMPDIR, "file")
            with open(path, "wb") as fobj:
                fobj.write("aaa")
            tar.add(path)
        finally:
            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)
        try:

path = os.path.join(TEMPDIR, "file")
            with open(path, "wb"):
                pass
            tarinfo = tar.gettarinfo(path)
            self.assertEqual(tarinfo.size, 0)

with open(path, "wb") as fobj:
                fobj.write("aaa")
            tarinfo = tar.gettarinfo(path)
            self.assertEqual(tarinfo.size, 3)
        finally:
            tar.close()

def test_directory_size(self):
        path = os.path.join(TEMPDIR, "directory")
        os.mkdir(path)
        try:
            tar = tarfile.open(tmpname, self.mode)
            try:
                tarinfo = tar.gettarinfo(path)
                self.assertEqual(tarinfo.size, 0)
            finally:
                tar.close()
        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")
            with open(target, "wb") as fobj:
                fobj.write("aaa")
            os.link(target, link)
            try:
                tar = tarfile.open(tmpname, self.mode)
                try:
                    # Record the link target in the inodes list.
                    tar.gettarinfo(target)
                    tarinfo = tar.gettarinfo(link)
                    self.assertEqual(tarinfo.size, 0)
                finally:
                    tar.close()
            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)
                try:
                    tarinfo = tar.gettarinfo(path)
                    self.assertEqual(tarinfo.size, 0)
                finally:
                    tar.close()
            finally:
                os.remove(path)

def test_add_self(self):
        # Test for #1257255.
        dstname = os.path.abspath(tmpname)
        tar = tarfile.open(tmpname, self.mode)
        try:
            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")
        finally:
            tar.close()

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")
            try:
                with test_support.check_warnings(("use the filter argument",
                                                DeprecationWarning)):
                    tar.add(tempdir, arcname="empty_dir", exclude=exclude)
            finally:
                tar.close()

tar = tarfile.open(tmpname, "r")
            try:
                self.assertEqual(len(tar.getmembers()), 1)
                self.assertEqual(tar.getnames()[0], "empty_dir")
            finally:
                tar.close()
        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")
            try:
                tar.add(tempdir, arcname="empty_dir", filter=filter)
            finally:
                tar.close()

tar = tarfile.open(tmpname, "r")
            try:
                for tarinfo in tar:
                    self.assertEqual(tarinfo.uid, 123)
                    self.assertEqual(tarinfo.uname, "foo")
                self.assertEqual(len(tar.getmembers()), 3)
            finally:
                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)
        try:
            tar.add(foo, arcname=path)
        finally:
            tar.close()

tar = tarfile.open(tmpname, "r")
        try:
            t = tar.next()
        finally:
            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):
            tar = tarfile.open(tmpname, self.mode)
            try:
                tar.add(".")
            finally:
                tar.close()

tar = tarfile.open(tmpname, "r")
            try:
                for t in tar:
                    self.assertTrue(t.name == "." or t.name.startswith("./"))
            finally:
                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"):
            with gzip.GzipFile(tmpname) as fobj:
                data = fobj.read()
        elif self.mode.endswith("bz2"):
            dec = bz2.BZ2Decompressor()
            with open(tmpname, "rb") as fobj:
                data = fobj.read()
            data = dec.decompress(data)
            self.assertTrue(len(dec.unused_data) == 0,
                    "found trailing data")
        else:
            with open(tmpname, "rb") as fobj:
                data = fobj.read()

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")
        try:
            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")
        finally:
            tar.close()

tar = tarfile.open(tmpname)
        try:
            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")
        finally:
            tar.close()

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")

with open(self.foo, "wb") as fobj:
            fobj.write("foo")

os.link(self.foo, self.bar)

self.tar = tarfile.open(tmpname, "w")
        self.tar.add(self.foo)

def tearDown(self):
        self.tar.close()
        support.unlink(self.foo)
        support.unlink(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)
        try:
            tar.addfile(tarinfo)
        finally:
            tar.close()

tar = tarfile.open(tmpname)
        try:
            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")
        finally:
            tar.close()

def test_pax_global_header(self):
        pax_headers = {
                u"foo": u"bar",
                u"uid": u"0",
                u"mtime": u"1.23",
                u"test": u"\xe4\xf6\xfc",
                u"\xe4\xf6\xfc": u"test"}

tar = tarfile.open(tmpname, "w", format=tarfile.PAX_FORMAT,
                pax_headers=pax_headers)
        try:
            tar.addfile(tarfile.TarInfo("test"))
        finally:
            tar.close()

# Test if the global header was written correctly.
        tar = tarfile.open(tmpname, encoding="iso8859-1")
        try:
            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")
        finally:
            tar.close()

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")
        try:
            t = tarfile.TarInfo()
            t.name = u"\xe4\xf6\xfc"     # non-ASCII
            t.uid = 8**8        # too large
            t.pax_headers = pax_headers
            tar.addfile(t)
        finally:
            tar.close()

tar = tarfile.open(tmpname, encoding="iso8859-1")
        try:
            t = tar.getmembers()[0]
            self.assertEqual(t.pax_headers, pax_headers)
            self.assertEqual(t.name, "foo")
            self.assertEqual(t.uid, 123)
        finally:
            tar.close()

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")
        try:
            name = u"\xe4\xf6\xfc"
            tar.addfile(tarfile.TarInfo(name))
        finally:
            tar.close()

tar = tarfile.open(tmpname, encoding=encoding)
        try:
            self.assertTrue(type(tar.getnames()[0]) is not unicode)
            self.assertEqual(tar.getmembers()[0].name, name.encode(encoding))
        finally:
            tar.close()

def test_unicode_filename_error(self):
        tar = tarfile.open(tmpname, "w", format=self.format, encoding="ascii", errors="strict")
        try:
            tarinfo = tarfile.TarInfo()

tarinfo.name = "\xe4\xf6\xfc"
            if self.format == tarfile.PAX_FORMAT:
                self.assertRaises(UnicodeError, tar.addfile, tarinfo)
            else:
                tar.addfile(tarinfo)

tarinfo.name = u"\xe4\xf6\xfc"
            self.assertRaises(UnicodeError, tar.addfile, tarinfo)

tarinfo.name = "foo"
            tarinfo.uname = u"\xe4\xf6\xfc"
            self.assertRaises(UnicodeError, tar.addfile, tarinfo)
        finally:
            tar.close()

def test_unicode_argument(self):
        tar = tarfile.open(tarname, "r", encoding="iso8859-1", errors="strict")
        try:
            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)
        finally:
            tar.close()

def test_uname_unicode(self):
        for name in (u"\xe4\xf6\xfc", "\xe4\xf6\xfc"):
            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")
            try:
                tar.addfile(t)
            finally:
                tar.close()
            fobj.seek(0)

tar = tarfile.open("foo.tar", fileobj=fobj, encoding="iso8859-1")
            t = tar.getmember("foo")
            self.assertEqual(t.uname, "\xe4\xf6\xfc")
            self.assertEqual(t.gname, "\xe4\xf6\xfc")

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"\xe4\xf6\xfc")

for handler, name in (("utf-8", u"\xe4\xf6\xfc".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"\xe4\xf6\xfc/\u20ac")

tar = tarfile.open(tmpname, format=self.format, encoding="iso8859-1",
                errors="utf-8")
        self.assertEqual(tar.getnames()[0], "\xe4\xf6\xfc/" + u"\u20ac".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):
        with tarfile.open(self.tarname, "a", fileobj=fileobj) as tar:
            tar.addfile(tarfile.TarInfo("bar"))

def _create_testtar(self, mode="w:"):
        with tarfile.open(tarname, encoding="iso8859-1") as src:
            t = src.getmember("ustar/regtype")
            t.name = "foo"
            f = src.extractfile(t)
            with tarfile.open(self.tarname, mode) as tar:
                tar.addfile(t, f)

def _test(self, names=["bar"], fileobj=None):
        with tarfile.open(self.tarname, fileobj=fileobj) as tar:
            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()
        with open(self.tarname) as fobj:
            data = fobj.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):
        with open(self.tarname, "wb") as fobj:
            fobj.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.
        with open(tmpname, "wb") as fobj:
            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")

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():
    support.unlink(TEMPDIR)
    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)

with open(tarname, "rb") as fobj:
        data = fobj.read()

if gzip:
        # Create testtar.tar.gz and add gzip-specific tests.
        support.unlink(gzipname)
        with gzip.open(gzipname, "wb") as tar:
            tar.write(data)

tests += [
            GzipMiscReadTest,
            GzipUstarReadTest,
            GzipStreamReadTest,
            GzipListTest,
            GzipWriteTest,
            GzipStreamWriteTest,
        ]

if bz2:
        # Create testtar.tar.bz2 and add bz2-specific tests.
        support.unlink(bz2name)
        tar = bz2.BZ2File(bz2name, "wb")
        try:
            tar.write(data)
        finally:
            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()

Current path /lib64/python2.7/test

Contents 10 folders, 1437 files

Disk free 100.01 GB

PHP version 8.3.30

📁 /lib64/python2.7/test ⚡ Nexus File Manager • 1447 items

Nexus File Manager v2.0

✏️ test_tarfile.py