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cpython/Lib/test/test_tarfile.py
Lars Gustäbel c64e40215d This is the implementation of POSIX.1-2001 (pax) format read/write 
support.

The TarInfo class now contains all necessary logic to process and
create tar header data which has been moved there from the TarFile
class. The fromtarfile() method was added. The new path and linkpath
properties are aliases for the name and linkname attributes in
correspondence to the pax naming scheme.

The TarFile constructor and classmethods now accept a number of
keyword arguments which could only be set as attributes before (e.g.
dereference, ignore_zeros). The encoding and pax_headers arguments
were added for pax support. There is a new tarinfo keyword argument
that allows using subclassed TarInfo objects in TarFile.

The boolean TarFile.posix attribute is deprecated, because now three
tar formats are supported. Instead, the desired format for writing is
specified using the constants USTAR_FORMAT, GNU_FORMAT and PAX_FORMAT
as the format keyword argument. This change affects TarInfo.tobuf()
as well.

The test suite has been heavily reorganized and partially rewritten.
A new testtar.tar was added that contains sample data in many formats
from 4 different tar programs.

Some bugs and quirks that also have been fixed:
Directory names do no longer have a trailing slash in TarInfo.name or
TarFile.getnames().
Adding the same file twice does not create a hardlink file member.
The TarFile constructor does no longer need a name argument.
The TarFile._mode attribute was renamed to mode and contains either
'r', 'w' or 'a'.
2007-03-13 10:47:19 +00:00

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# encoding: iso8859-15
import sys
import os
import shutil
import tempfile
import StringIO
import md5
import errno
import unittest
import tarfile
from test import test_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.new(data).hexdigest()
def path(path):
return test_support.findfile(path)
TEMPDIR = os.path.join(tempfile.gettempdir(), "test_tarfile_tmp")
tarname = path("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)
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.assert_((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.assert_(lines1 == lines2,
"fileobj.readlines() failed")
self.assert_(len(lines2) == 114,
"fileobj.readlines() failed")
self.assert_(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.assert_(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.assert_(0 == fobj.tell(),
"seek() to file's start failed")
fobj.seek(2048, 0)
self.assert_(2048 == fobj.tell(),
"seek() to absolute position failed")
fobj.seek(-1024, 1)
self.assert_(1024 == fobj.tell(),
"seek() to negative relative position failed")
fobj.seek(1024, 1)
self.assert_(2048 == fobj.tell(),
"seek() to positive relative position failed")
s = fobj.read(10)
self.assert_(s == data[2048:2058],
"read() after seek failed")
fobj.seek(0, 2)
self.assert_(tarinfo.size == fobj.tell(),
"seek() to file's end failed")
self.assert_(fobj.read() == "",
"read() at file's end did not return empty string")
fobj.seek(-tarinfo.size, 2)
self.assert_(0 == fobj.tell(),
"relative seek() to file's start failed")
fobj.seek(512)
s1 = fobj.readlines()
fobj.seek(512)
s2 = fobj.readlines()
self.assert_(s1 == s2,
"readlines() after seek failed")
fobj.seek(0)
self.assert_(len(fobj.readline()) == fobj.tell(),
"tell() after readline() failed")
fobj.seek(512)
self.assert_(len(fobj.readline()) + 512 == fobj.tell(),
"tell() after seek() and readline() failed")
fobj.seek(0)
line = fobj.readline()
self.assert_(fobj.read() == data[len(line):],
"read() after readline() failed")
fobj.close()
class MiscReadTest(ReadTest):
def test_no_filename(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_fail_comp(self):
# For Gzip and Bz2 Tests: fail with a ReadError on an uncompressed file.
if self.mode == "r:":
return
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.assert_(tarinfo.type == tarfile.DIRTYPE,
"v7 dirtype failed")
def test_check_members(self):
for tarinfo in self.tar:
self.assert_(int(tarinfo.mtime) == 07606136617,
"wrong mtime for %s" % tarinfo.name)
if not tarinfo.name.startswith("ustar/"):
continue
self.assert_(tarinfo.uname == "tarfile",
"wrong uname for %s" % tarinfo.name)
def test_find_members(self):
self.assert_(self.tar.getmembers()[-1].name == "misc/eof",
"could not find all members")
def test_extract_hardlink(self):
# Test hardlink extraction (e.g. bug #857297).
tar = tarfile.open(tarname, errorlevel=1)
tar.extract("ustar/regtype", TEMPDIR)
try:
tar.extract("ustar/lnktype", TEMPDIR)
except EnvironmentError, e:
if e.errno == errno.ENOENT:
self.fail("hardlink not extracted properly")
data = open(os.path.join(TEMPDIR, "ustar/lnktype"), "rb").read()
self.assertEqual(md5sum(data), md5_regtype)
try:
tar.extract("ustar/symtype", TEMPDIR)
except EnvironmentError, e:
if e.errno == errno.ENOENT:
self.fail("symlink not extracted properly")
data = open(os.path.join(TEMPDIR, "ustar/symtype"), "rb").read()
self.assertEqual(md5sum(data), md5_regtype)
class StreamReadTest(ReadTest):
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.assert_((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)
tar2 = self.tar
while True:
t1 = tar1.next()
t2 = tar2.next()
if t1 is None:
break
self.assert_(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.assert_(v2 is not None, "stream.extractfile() failed")
self.assert_(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)
class MemberReadTest(ReadTest):
def _test_member(self, tarinfo, chksum=None, **kwargs):
if chksum is not None:
self.assert_(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.assert_(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-<2D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>")
self._test_member(tarinfo, size=7011, chksum=md5_regtype)
def test_find_ustar_longname(self):
name = "ustar/" + "12345/" * 39 + "1234567/longname"
self.assert_(name in 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):
tarinfo = self.tar.getmember("pax/umlauts-<2D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>")
self._test_member(tarinfo, size=7011, chksum=md5_regtype)
class LongnameTest(ReadTest):
def test_read_longname(self):
# Test reading of longname (bug #1471427).
name = self.subdir + "/" + "123/" * 125 + "longname"
try:
tarinfo = self.tar.getmember(name)
except KeyError:
self.fail("longname not found")
self.assert_(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.assert_(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(1536))
self.assertRaises(tarfile.ReadError, tarfile.open, name="foo.tar", fileobj=fobj)
class GNUReadTest(LongnameTest):
subdir = "gnu"
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.assert_(fobj1.read() == fobj2.read(),
"sparse file extraction failed")
class PaxReadTest(ReadTest):
subdir = "pax"
def test_pax_globheaders(self):
tar = tarfile.open(tarname)
tarinfo = tar.getmember("pax/regtype1")
self.assertEqual(tarinfo.uname, "foo")
self.assertEqual(tarinfo.gname, "bar")
self.assertEqual(tarinfo.pax_headers.get("VENDOR.umlauts"), "<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>")
tarinfo = tar.getmember("pax/regtype2")
self.assertEqual(tarinfo.uname, "")
self.assertEqual(tarinfo.gname, "bar")
self.assertEqual(tarinfo.pax_headers.get("VENDOR.umlauts"), "<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>")
tarinfo = tar.getmember("pax/regtype3")
self.assertEqual(tarinfo.uname, "tarfile")
self.assertEqual(tarinfo.gname, "tarfile")
self.assertEqual(tarinfo.pax_headers.get("VENDOR.umlauts"), "<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>")
class WriteTest(unittest.TestCase):
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.assert_(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.assert_(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")
open(target, "wb").close()
os.link(target, link)
try:
tar = tarfile.open(tmpname, self.mode)
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.assert_(tar.name == dstname, "archive name must be absolute")
tar.add(dstname)
self.assert_(tar.getnames() == [], "added the archive to itself")
cwd = os.getcwd()
os.chdir(TEMPDIR)
tar.add(dstname)
os.chdir(cwd)
self.assert_(tar.getnames() == [], "added the archive to itself")
class StreamWriteTest(unittest.TestCase):
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.assert_(len(dec.unused_data) == 0,
"found trailing data")
else:
fobj = open(tmpname, "rb")
data = fobj.read()
fobj.close()
self.assert_(data.count("\0") == tarfile.RECORDSIZE,
"incorrect zero padding")
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.assert_(v1 == v2, "GNU longname/longlink creation failed")
tar.close()
tar = tarfile.open(tmpname)
member = tar.next()
self.failIf(member is None, "unable to read longname member")
self.assert_(tarinfo.name == member.name and \
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):
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.assert_(tarinfo.type == tarfile.REGTYPE,
"add file as regular failed")
def test_add_hardlink(self):
tarinfo = self.tar.gettarinfo(self.bar)
self.assert_(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.assert_(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.assert_(link == l, "PAX longlink creation failed")
else:
n = tar.getmembers()[0].name
self.assert_(name == n, "PAX longname creation failed")
def test_iso8859_15_filename(self):
self._test_unicode_filename("iso8859-15")
def test_utf8_filename(self):
self._test_unicode_filename("utf8")
def test_utf16_filename(self):
self._test_unicode_filename("utf16")
def _test_unicode_filename(self, encoding):
tar = tarfile.open(tmpname, "w", format=tarfile.PAX_FORMAT)
name = u"\u20ac".encode(encoding) # Euro sign
tar.encoding = encoding
tar.addfile(tarfile.TarInfo(name))
tar.close()
tar = tarfile.open(tmpname, encoding=encoding)
self.assertEqual(tar.getmembers()[0].name, name)
tar.close()
def test_unicode_filename_error(self):
# The euro sign filename cannot be translated to iso8859-1 encoding.
tar = tarfile.open(tmpname, "w", format=tarfile.PAX_FORMAT, encoding="utf8")
name = u"\u20ac".encode("utf8") # Euro sign
tar.addfile(tarfile.TarInfo(name))
tar.close()
self.assertRaises(UnicodeError, tarfile.open, tmpname, encoding="iso8859-1")
def test_pax_headers(self):
self._test_pax_headers({"foo": "bar", "uid": 0, "mtime": 1.23})
self._test_pax_headers({"euro": u"\u20ac".encode("utf8")})
self._test_pax_headers({"euro": u"\u20ac"},
{"euro": u"\u20ac".encode("utf8")})
self._test_pax_headers({u"\u20ac": "euro"},
{u"\u20ac".encode("utf8"): "euro"})
def _test_pax_headers(self, pax_headers, cmp_headers=None):
if cmp_headers is None:
cmp_headers = pax_headers
tar = tarfile.open(tmpname, "w", format=tarfile.PAX_FORMAT, \
pax_headers=pax_headers, encoding="utf8")
tar.addfile(tarfile.TarInfo("test"))
tar.close()
tar = tarfile.open(tmpname, encoding="utf8")
self.assertEqual(tar.pax_headers, cmp_headers)
def test_truncated_header(self):
tar = tarfile.open(tmpname, "w", format=tarfile.PAX_FORMAT)
tarinfo = tarfile.TarInfo("123/" * 126 + "longname")
tar.addfile(tarinfo)
tar.close()
# Simulate a premature EOF.
open(tmpname, "rb+").truncate(1536)
tar = tarfile.open(tmpname)
self.assertEqual(tar.getmembers(), [])
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)
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):
open(self.tarname, "w").close()
self._add_testfile()
self._test()
def test_empty_fileobj(self):
fobj = StringIO.StringIO()
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"])
def test_append_gz(self):
if gzip is None:
return
self._create_testtar("w:gz")
self.assertRaises(tarfile.ReadError, tarfile.open, tmpname, "a")
def test_append_bz2(self):
if bz2 is None:
return
self._create_testtar("w:bz2")
self.assertRaises(tarfile.ReadError, tarfile.open, tmpname, "a")
class LimitsTest(unittest.TestCase):
def test_ustar_limits(self):
# 100 char name
tarinfo = tarfile.TarInfo("0123456789" * 10)
tarinfo.create_ustar_header()
# 101 char name that cannot be stored
tarinfo = tarfile.TarInfo("0123456789" * 10 + "0")
self.assertRaises(ValueError, tarinfo.create_ustar_header)
# 256 char name with a slash at pos 156
tarinfo = tarfile.TarInfo("123/" * 62 + "longname")
tarinfo.create_ustar_header()
# 256 char name that cannot be stored
tarinfo = tarfile.TarInfo("1234567/" * 31 + "longname")
self.assertRaises(ValueError, tarinfo.create_ustar_header)
# 512 char name
tarinfo = tarfile.TarInfo("123/" * 126 + "longname")
self.assertRaises(ValueError, tarinfo.create_ustar_header)
# 512 char linkname
tarinfo = tarfile.TarInfo("longlink")
tarinfo.linkname = "123/" * 126 + "longname"
self.assertRaises(ValueError, tarinfo.create_ustar_header)
# uid > 8 digits
tarinfo = tarfile.TarInfo("name")
tarinfo.uid = 010000000
self.assertRaises(ValueError, tarinfo.create_ustar_header)
def test_gnu_limits(self):
tarinfo = tarfile.TarInfo("123/" * 126 + "longname")
tarinfo.create_gnu_header()
tarinfo = tarfile.TarInfo("longlink")
tarinfo.linkname = "123/" * 126 + "longname"
tarinfo.create_gnu_header()
# uid >= 256 ** 7
tarinfo = tarfile.TarInfo("name")
tarinfo.uid = 04000000000000000000L
self.assertRaises(ValueError, tarinfo.create_gnu_header)
def test_pax_limits(self):
# A 256 char name that can be stored without an extended header.
tarinfo = tarfile.TarInfo("123/" * 62 + "longname")
self.assert_(len(tarinfo.create_pax_header("utf8")) == 512,
"create_pax_header attached superfluous extended header")
tarinfo = tarfile.TarInfo("123/" * 126 + "longname")
tarinfo.create_pax_header("utf8")
tarinfo = tarfile.TarInfo("longlink")
tarinfo.linkname = "123/" * 126 + "longname"
tarinfo.create_pax_header("utf8")
tarinfo = tarfile.TarInfo("name")
tarinfo.uid = 04000000000000000000L
tarinfo.create_pax_header("utf8")
class GzipMiscReadTest(MiscReadTest):
tarname = gzipname
mode = "r:gz"
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"
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"
def test_main():
if not os.path.exists(TEMPDIR):
os.mkdir(TEMPDIR)
tests = [
UstarReadTest,
MiscReadTest,
StreamReadTest,
DetectReadTest,
MemberReadTest,
GNUReadTest,
PaxReadTest,
WriteTest,
StreamWriteTest,
GNUWriteTest,
PaxWriteTest,
AppendTest,
LimitsTest,
]
if hasattr(os, "link"):
tests.append(HardlinkTest)
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,
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,
Bz2WriteTest,
Bz2StreamWriteTest,
]
try:
test_support.run_unittest(*tests)
finally:
if os.path.exists(TEMPDIR):
shutil.rmtree(TEMPDIR)
if __name__ == "__main__":
test_main()
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