mirror of https://github.com/python/cpython
743 lines
22 KiB
Python
743 lines
22 KiB
Python
import sys
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import os
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import shutil
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import tempfile
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import StringIO
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import unittest
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import tarfile
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from test import test_support
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# Check for our compression modules.
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try:
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import gzip
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gzip.GzipFile
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except (ImportError, AttributeError):
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gzip = None
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try:
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import bz2
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except ImportError:
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bz2 = None
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def path(path):
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return test_support.findfile(path)
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testtar = path("testtar.tar")
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tempdir = os.path.join(tempfile.gettempdir(), "testtar" + os.extsep + "dir")
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tempname = test_support.TESTFN
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membercount = 12
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def tarname(comp=""):
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if not comp:
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return testtar
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return os.path.join(tempdir, "%s%s%s" % (testtar, os.extsep, comp))
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def dirname():
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if not os.path.exists(tempdir):
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os.mkdir(tempdir)
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return tempdir
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def tmpname():
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return tempname
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class BaseTest(unittest.TestCase):
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comp = ''
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mode = 'r'
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sep = ':'
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def setUp(self):
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mode = self.mode + self.sep + self.comp
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self.tar = tarfile.open(tarname(self.comp), mode)
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def tearDown(self):
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self.tar.close()
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class ReadTest(BaseTest):
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def test(self):
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"""Test member extraction.
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"""
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members = 0
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for tarinfo in self.tar:
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members += 1
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if not tarinfo.isreg():
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continue
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f = self.tar.extractfile(tarinfo)
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self.assert_(len(f.read()) == tarinfo.size,
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"size read does not match expected size")
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f.close()
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self.assert_(members == membercount,
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"could not find all members")
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def test_sparse(self):
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"""Test sparse member extraction.
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"""
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if self.sep != "|":
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f1 = self.tar.extractfile("S-SPARSE")
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f2 = self.tar.extractfile("S-SPARSE-WITH-NULLS")
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self.assert_(f1.read() == f2.read(),
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"_FileObject failed on sparse file member")
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def test_readlines(self):
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"""Test readlines() method of _FileObject.
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"""
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if self.sep != "|":
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filename = "0-REGTYPE-TEXT"
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self.tar.extract(filename, dirname())
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f = open(os.path.join(dirname(), filename), "rU")
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lines1 = f.readlines()
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f.close()
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lines2 = self.tar.extractfile(filename).readlines()
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self.assert_(lines1 == lines2,
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"_FileObject.readline() does not work correctly")
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def test_iter(self):
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# Test iteration over ExFileObject.
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if self.sep != "|":
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filename = "0-REGTYPE-TEXT"
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self.tar.extract(filename, dirname())
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f = open(os.path.join(dirname(), filename), "rU")
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lines1 = f.readlines()
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f.close()
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lines2 = [line for line in self.tar.extractfile(filename)]
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self.assert_(lines1 == lines2,
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"ExFileObject iteration does not work correctly")
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def test_seek(self):
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"""Test seek() method of _FileObject, incl. random reading.
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"""
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if self.sep != "|":
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filename = "0-REGTYPE-TEXT"
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self.tar.extract(filename, dirname())
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f = open(os.path.join(dirname(), filename), "rb")
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data = f.read()
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f.close()
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tarinfo = self.tar.getmember(filename)
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fobj = self.tar.extractfile(tarinfo)
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text = fobj.read()
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fobj.seek(0)
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self.assert_(0 == fobj.tell(),
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"seek() to file's start failed")
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fobj.seek(2048, 0)
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self.assert_(2048 == fobj.tell(),
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"seek() to absolute position failed")
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fobj.seek(-1024, 1)
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self.assert_(1024 == fobj.tell(),
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"seek() to negative relative position failed")
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fobj.seek(1024, 1)
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self.assert_(2048 == fobj.tell(),
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"seek() to positive relative position failed")
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s = fobj.read(10)
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self.assert_(s == data[2048:2058],
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"read() after seek failed")
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fobj.seek(0, 2)
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self.assert_(tarinfo.size == fobj.tell(),
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"seek() to file's end failed")
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self.assert_(fobj.read() == "",
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"read() at file's end did not return empty string")
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fobj.seek(-tarinfo.size, 2)
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self.assert_(0 == fobj.tell(),
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"relative seek() to file's start failed")
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fobj.seek(512)
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s1 = fobj.readlines()
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fobj.seek(512)
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s2 = fobj.readlines()
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self.assert_(s1 == s2,
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"readlines() after seek failed")
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fobj.seek(0)
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self.assert_(len(fobj.readline()) == fobj.tell(),
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"tell() after readline() failed")
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fobj.seek(512)
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self.assert_(len(fobj.readline()) + 512 == fobj.tell(),
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"tell() after seek() and readline() failed")
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fobj.seek(0)
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line = fobj.readline()
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self.assert_(fobj.read() == data[len(line):],
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"read() after readline() failed")
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fobj.close()
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def test_old_dirtype(self):
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"""Test old style dirtype member (bug #1336623).
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"""
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# Old tars create directory members using a REGTYPE
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# header with a "/" appended to the filename field.
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# Create an old tar style directory entry.
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filename = tmpname()
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tarinfo = tarfile.TarInfo("directory/")
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tarinfo.type = tarfile.REGTYPE
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fobj = open(filename, "w")
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fobj.write(tarinfo.tobuf())
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fobj.close()
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try:
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# Test if it is still a directory entry when
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# read back.
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tar = tarfile.open(filename)
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tarinfo = tar.getmembers()[0]
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tar.close()
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self.assert_(tarinfo.type == tarfile.DIRTYPE)
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self.assert_(tarinfo.name.endswith("/"))
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finally:
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try:
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os.unlink(filename)
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except:
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pass
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def test_dirtype(self):
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for tarinfo in self.tar:
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if tarinfo.isdir():
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self.assert_(tarinfo.name.endswith("/"))
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self.assert_(not tarinfo.name[:-1].endswith("/"))
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class ReadStreamTest(ReadTest):
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sep = "|"
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def test(self):
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"""Test member extraction, and for StreamError when
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seeking backwards.
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"""
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ReadTest.test(self)
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tarinfo = self.tar.getmembers()[0]
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f = self.tar.extractfile(tarinfo)
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self.assertRaises(tarfile.StreamError, f.read)
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def test_stream(self):
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"""Compare the normal tar and the stream tar.
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"""
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stream = self.tar
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tar = tarfile.open(tarname(), 'r')
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while 1:
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t1 = tar.next()
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t2 = stream.next()
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if t1 is None:
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break
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self.assert_(t2 is not None, "stream.next() failed.")
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if t2.islnk() or t2.issym():
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self.assertRaises(tarfile.StreamError, stream.extractfile, t2)
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continue
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v1 = tar.extractfile(t1)
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v2 = stream.extractfile(t2)
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if v1 is None:
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continue
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self.assert_(v2 is not None, "stream.extractfile() failed")
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self.assert_(v1.read() == v2.read(), "stream extraction failed")
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tar.close()
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stream.close()
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class ReadDetectTest(ReadTest):
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def setUp(self):
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self.tar = tarfile.open(tarname(self.comp), self.mode)
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class ReadDetectFileobjTest(ReadTest):
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def setUp(self):
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name = tarname(self.comp)
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self.tar = tarfile.open(name, mode=self.mode,
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fileobj=open(name, "rb"))
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class ReadAsteriskTest(ReadTest):
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def setUp(self):
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mode = self.mode + self.sep + "*"
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self.tar = tarfile.open(tarname(self.comp), mode)
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class ReadStreamAsteriskTest(ReadStreamTest):
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def setUp(self):
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mode = self.mode + self.sep + "*"
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self.tar = tarfile.open(tarname(self.comp), mode)
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class WriteTest(BaseTest):
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mode = 'w'
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def setUp(self):
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mode = self.mode + self.sep + self.comp
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self.src = tarfile.open(tarname(self.comp), 'r')
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self.dstname = tmpname()
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self.dst = tarfile.open(self.dstname, mode)
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def tearDown(self):
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self.src.close()
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self.dst.close()
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def test_posix(self):
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self.dst.posix = 1
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self._test()
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def test_nonposix(self):
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self.dst.posix = 0
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self._test()
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def test_small(self):
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self.dst.add(os.path.join(os.path.dirname(__file__),"cfgparser.1"))
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self.dst.close()
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self.assertNotEqual(os.stat(self.dstname).st_size, 0)
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def _test(self):
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for tarinfo in self.src:
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if not tarinfo.isreg():
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continue
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f = self.src.extractfile(tarinfo)
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if self.dst.posix and len(tarinfo.name) > tarfile.LENGTH_NAME and "/" not in tarinfo.name:
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self.assertRaises(ValueError, self.dst.addfile,
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tarinfo, f)
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else:
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self.dst.addfile(tarinfo, f)
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def test_add_self(self):
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dstname = os.path.abspath(self.dstname)
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self.assertEqual(self.dst.name, dstname, "archive name must be absolute")
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self.dst.add(dstname)
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self.assertEqual(self.dst.getnames(), [], "added the archive to itself")
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cwd = os.getcwd()
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os.chdir(dirname())
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self.dst.add(dstname)
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os.chdir(cwd)
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self.assertEqual(self.dst.getnames(), [], "added the archive to itself")
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class Write100Test(BaseTest):
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# The name field in a tar header stores strings of at most 100 chars.
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# If a string is shorter than 100 chars it has to be padded with '\0',
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# which implies that a string of exactly 100 chars is stored without
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# a trailing '\0'.
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def setUp(self):
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self.name = "01234567890123456789012345678901234567890123456789"
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self.name += "01234567890123456789012345678901234567890123456789"
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self.tar = tarfile.open(tmpname(), "w")
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t = tarfile.TarInfo(self.name)
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self.tar.addfile(t)
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self.tar.close()
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self.tar = tarfile.open(tmpname())
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def tearDown(self):
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self.tar.close()
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def test(self):
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self.assertEqual(self.tar.getnames()[0], self.name,
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"failed to store 100 char filename")
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class WriteSize0Test(BaseTest):
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mode = 'w'
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def setUp(self):
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self.tmpdir = dirname()
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self.dstname = tmpname()
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self.dst = tarfile.open(self.dstname, "w")
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def tearDown(self):
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self.dst.close()
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def test_file(self):
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path = os.path.join(self.tmpdir, "file")
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f = open(path, "w")
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f.close()
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tarinfo = self.dst.gettarinfo(path)
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self.assertEqual(tarinfo.size, 0)
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f = open(path, "w")
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f.write("aaa")
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f.close()
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tarinfo = self.dst.gettarinfo(path)
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self.assertEqual(tarinfo.size, 3)
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def test_directory(self):
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path = os.path.join(self.tmpdir, "directory")
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if os.path.exists(path):
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# This shouldn't be necessary, but is <wink> if a previous
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# run was killed in mid-stream.
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shutil.rmtree(path)
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os.mkdir(path)
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tarinfo = self.dst.gettarinfo(path)
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self.assertEqual(tarinfo.size, 0)
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def test_symlink(self):
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if hasattr(os, "symlink"):
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path = os.path.join(self.tmpdir, "symlink")
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os.symlink("link_target", path)
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tarinfo = self.dst.gettarinfo(path)
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self.assertEqual(tarinfo.size, 0)
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class WriteStreamTest(WriteTest):
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sep = '|'
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def test_padding(self):
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self.dst.close()
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if self.comp == "gz":
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f = gzip.GzipFile(self.dstname)
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s = f.read()
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f.close()
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elif self.comp == "bz2":
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f = bz2.BZ2Decompressor()
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s = file(self.dstname).read()
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s = f.decompress(s)
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self.assertEqual(len(f.unused_data), 0, "trailing data")
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else:
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f = file(self.dstname)
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s = f.read()
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f.close()
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self.assertEqual(s.count("\0"), tarfile.RECORDSIZE,
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"incorrect zero padding")
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class WriteGNULongTest(unittest.TestCase):
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"""This testcase checks for correct creation of GNU Longname
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and Longlink extensions.
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It creates a tarfile and adds empty members with either
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long names, long linknames or both and compares the size
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of the tarfile with the expected size.
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It checks for SF bug #812325 in TarFile._create_gnulong().
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While I was writing this testcase, I noticed a second bug
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in the same method:
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Long{names,links} weren't null-terminated which lead to
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bad tarfiles when their length was a multiple of 512. This
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is tested as well.
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"""
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def _length(self, s):
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blocks, remainder = divmod(len(s) + 1, 512)
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if remainder:
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blocks += 1
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return blocks * 512
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def _calc_size(self, name, link=None):
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# initial tar header
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count = 512
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if len(name) > tarfile.LENGTH_NAME:
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# gnu longname extended header + longname
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count += 512
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count += self._length(name)
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if link is not None and len(link) > tarfile.LENGTH_LINK:
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# gnu longlink extended header + longlink
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count += 512
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count += self._length(link)
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return count
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def _test(self, name, link=None):
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tarinfo = tarfile.TarInfo(name)
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if link:
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tarinfo.linkname = link
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tarinfo.type = tarfile.LNKTYPE
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tar = tarfile.open(tmpname(), "w")
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tar.posix = False
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tar.addfile(tarinfo)
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v1 = self._calc_size(name, link)
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v2 = tar.offset
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self.assertEqual(v1, v2, "GNU longname/longlink creation failed")
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tar.close()
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tar = tarfile.open(tmpname())
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member = tar.next()
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self.failIf(member is None, "unable to read longname member")
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self.assert_(tarinfo.name == member.name and \
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tarinfo.linkname == member.linkname, \
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"unable to read longname member")
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def test_longname_1023(self):
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self._test(("longnam/" * 127) + "longnam")
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def test_longname_1024(self):
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self._test(("longnam/" * 127) + "longname")
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def test_longname_1025(self):
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self._test(("longnam/" * 127) + "longname_")
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def test_longlink_1023(self):
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self._test("name", ("longlnk/" * 127) + "longlnk")
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def test_longlink_1024(self):
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self._test("name", ("longlnk/" * 127) + "longlink")
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def test_longlink_1025(self):
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self._test("name", ("longlnk/" * 127) + "longlink_")
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|
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def test_longnamelink_1023(self):
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self._test(("longnam/" * 127) + "longnam",
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("longlnk/" * 127) + "longlnk")
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|
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def test_longnamelink_1024(self):
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self._test(("longnam/" * 127) + "longname",
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("longlnk/" * 127) + "longlink")
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def test_longnamelink_1025(self):
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self._test(("longnam/" * 127) + "longname_",
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("longlnk/" * 127) + "longlink_")
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|
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class ReadGNULongTest(unittest.TestCase):
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def setUp(self):
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self.tar = tarfile.open(tarname())
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def tearDown(self):
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self.tar.close()
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def test_1471427(self):
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"""Test reading of longname (bug #1471427).
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"""
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name = "test/" * 20 + "0-REGTYPE"
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try:
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tarinfo = self.tar.getmember(name)
|
|
except KeyError:
|
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tarinfo = None
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self.assert_(tarinfo is not None, "longname not found")
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self.assert_(tarinfo.type != tarfile.DIRTYPE, "read longname as dirtype")
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|
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def test_read_name(self):
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name = ("0-LONGNAME-" * 10)[:101]
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try:
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tarinfo = self.tar.getmember(name)
|
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except KeyError:
|
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tarinfo = None
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self.assert_(tarinfo is not None, "longname not found")
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|
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def test_read_link(self):
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link = ("1-LONGLINK-" * 10)[:101]
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name = ("0-LONGNAME-" * 10)[:101]
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try:
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tarinfo = self.tar.getmember(link)
|
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except KeyError:
|
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tarinfo = None
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self.assert_(tarinfo is not None, "longlink not found")
|
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self.assert_(tarinfo.linkname == name, "linkname wrong")
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|
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def test_truncated_longname(self):
|
|
f = open(tarname())
|
|
fobj = StringIO.StringIO(f.read(1024))
|
|
f.close()
|
|
tar = tarfile.open(name="foo.tar", fileobj=fobj)
|
|
self.assert_(len(tar.getmembers()) == 0, "")
|
|
tar.close()
|
|
|
|
|
|
class ExtractHardlinkTest(BaseTest):
|
|
|
|
def test_hardlink(self):
|
|
"""Test hardlink extraction (bug #857297)
|
|
"""
|
|
# Prevent errors from being caught
|
|
self.tar.errorlevel = 1
|
|
|
|
self.tar.extract("0-REGTYPE", dirname())
|
|
try:
|
|
# Extract 1-LNKTYPE which is a hardlink to 0-REGTYPE
|
|
self.tar.extract("1-LNKTYPE", dirname())
|
|
except EnvironmentError, e:
|
|
import errno
|
|
if e.errno == errno.ENOENT:
|
|
self.fail("hardlink not extracted properly")
|
|
|
|
class CreateHardlinkTest(BaseTest):
|
|
"""Test the creation of LNKTYPE (hardlink) members in an archive.
|
|
In this respect tarfile.py mimics the behaviour of GNU tar: If
|
|
a file has a st_nlink > 1, it will be added a REGTYPE member
|
|
only the first time.
|
|
"""
|
|
|
|
def setUp(self):
|
|
self.tar = tarfile.open(tmpname(), "w")
|
|
|
|
self.foo = os.path.join(dirname(), "foo")
|
|
self.bar = os.path.join(dirname(), "bar")
|
|
|
|
if os.path.exists(self.foo):
|
|
os.remove(self.foo)
|
|
if os.path.exists(self.bar):
|
|
os.remove(self.bar)
|
|
|
|
f = open(self.foo, "w")
|
|
f.write("foo")
|
|
f.close()
|
|
self.tar.add(self.foo)
|
|
|
|
def test_add_twice(self):
|
|
# If st_nlink == 1 then the same file will be added as
|
|
# REGTYPE every time.
|
|
tarinfo = self.tar.gettarinfo(self.foo)
|
|
self.assertEqual(tarinfo.type, tarfile.REGTYPE,
|
|
"add file as regular failed")
|
|
|
|
def test_add_hardlink(self):
|
|
# If st_nlink > 1 then the same file will be added as
|
|
# LNKTYPE.
|
|
os.link(self.foo, self.bar)
|
|
tarinfo = self.tar.gettarinfo(self.foo)
|
|
self.assertEqual(tarinfo.type, tarfile.LNKTYPE,
|
|
"add file as hardlink failed")
|
|
|
|
tarinfo = self.tar.gettarinfo(self.bar)
|
|
self.assertEqual(tarinfo.type, tarfile.LNKTYPE,
|
|
"add file as hardlink failed")
|
|
|
|
def test_dereference_hardlink(self):
|
|
self.tar.dereference = True
|
|
os.link(self.foo, self.bar)
|
|
tarinfo = self.tar.gettarinfo(self.bar)
|
|
self.assertEqual(tarinfo.type, tarfile.REGTYPE,
|
|
"dereferencing hardlink failed")
|
|
|
|
|
|
# Gzip TestCases
|
|
class ReadTestGzip(ReadTest):
|
|
comp = "gz"
|
|
class ReadStreamTestGzip(ReadStreamTest):
|
|
comp = "gz"
|
|
class WriteTestGzip(WriteTest):
|
|
comp = "gz"
|
|
class WriteStreamTestGzip(WriteStreamTest):
|
|
comp = "gz"
|
|
class ReadDetectTestGzip(ReadDetectTest):
|
|
comp = "gz"
|
|
class ReadDetectFileobjTestGzip(ReadDetectFileobjTest):
|
|
comp = "gz"
|
|
class ReadAsteriskTestGzip(ReadAsteriskTest):
|
|
comp = "gz"
|
|
class ReadStreamAsteriskTestGzip(ReadStreamAsteriskTest):
|
|
comp = "gz"
|
|
|
|
# Filemode test cases
|
|
|
|
class FileModeTest(unittest.TestCase):
|
|
def test_modes(self):
|
|
self.assertEqual(tarfile.filemode(0755), '-rwxr-xr-x')
|
|
self.assertEqual(tarfile.filemode(07111), '---s--s--t')
|
|
|
|
class OpenFileobjTest(BaseTest):
|
|
|
|
def test_opener(self):
|
|
# Test for SF bug #1496501.
|
|
fobj = StringIO.StringIO("foo\n")
|
|
try:
|
|
tarfile.open("", mode="r", fileobj=fobj)
|
|
except tarfile.ReadError:
|
|
self.assertEqual(fobj.tell(), 0, "fileobj's position has moved")
|
|
|
|
def test_fileobj(self):
|
|
# Test for SF bug #1695229, opening a tarfile without
|
|
# a name argument.
|
|
tarfile.open(mode="r", fileobj=open(tarname("")))
|
|
tarfile.TarFile(mode="r", fileobj=open(tarname("")))
|
|
|
|
if bz2:
|
|
# Bzip2 TestCases
|
|
class ReadTestBzip2(ReadTestGzip):
|
|
comp = "bz2"
|
|
class ReadStreamTestBzip2(ReadStreamTestGzip):
|
|
comp = "bz2"
|
|
class WriteTestBzip2(WriteTest):
|
|
comp = "bz2"
|
|
class WriteStreamTestBzip2(WriteStreamTestGzip):
|
|
comp = "bz2"
|
|
class ReadDetectTestBzip2(ReadDetectTest):
|
|
comp = "bz2"
|
|
class ReadDetectFileobjTestBzip2(ReadDetectFileobjTest):
|
|
comp = "bz2"
|
|
class ReadAsteriskTestBzip2(ReadAsteriskTest):
|
|
comp = "bz2"
|
|
class ReadStreamAsteriskTestBzip2(ReadStreamAsteriskTest):
|
|
comp = "bz2"
|
|
|
|
# If importing gzip failed, discard the Gzip TestCases.
|
|
if not gzip:
|
|
del ReadTestGzip
|
|
del ReadStreamTestGzip
|
|
del WriteTestGzip
|
|
del WriteStreamTestGzip
|
|
|
|
def test_main():
|
|
# Create archive.
|
|
f = open(tarname(), "rb")
|
|
fguts = f.read()
|
|
f.close()
|
|
if gzip:
|
|
# create testtar.tar.gz
|
|
tar = gzip.open(tarname("gz"), "wb")
|
|
tar.write(fguts)
|
|
tar.close()
|
|
if bz2:
|
|
# create testtar.tar.bz2
|
|
tar = bz2.BZ2File(tarname("bz2"), "wb")
|
|
tar.write(fguts)
|
|
tar.close()
|
|
|
|
tests = [
|
|
FileModeTest,
|
|
OpenFileobjTest,
|
|
ReadTest,
|
|
ReadStreamTest,
|
|
ReadDetectTest,
|
|
ReadDetectFileobjTest,
|
|
ReadAsteriskTest,
|
|
ReadStreamAsteriskTest,
|
|
WriteTest,
|
|
Write100Test,
|
|
WriteSize0Test,
|
|
WriteStreamTest,
|
|
WriteGNULongTest,
|
|
ReadGNULongTest,
|
|
]
|
|
|
|
if hasattr(os, "link"):
|
|
tests.append(ExtractHardlinkTest)
|
|
tests.append(CreateHardlinkTest)
|
|
|
|
if gzip:
|
|
tests.extend([
|
|
ReadTestGzip, ReadStreamTestGzip,
|
|
WriteTestGzip, WriteStreamTestGzip,
|
|
ReadDetectTestGzip, ReadDetectFileobjTestGzip,
|
|
ReadAsteriskTestGzip, ReadStreamAsteriskTestGzip
|
|
])
|
|
|
|
if bz2:
|
|
tests.extend([
|
|
ReadTestBzip2, ReadStreamTestBzip2,
|
|
WriteTestBzip2, WriteStreamTestBzip2,
|
|
ReadDetectTestBzip2, ReadDetectFileobjTestBzip2,
|
|
ReadAsteriskTestBzip2, ReadStreamAsteriskTestBzip2
|
|
])
|
|
try:
|
|
test_support.run_unittest(*tests)
|
|
finally:
|
|
if gzip:
|
|
os.remove(tarname("gz"))
|
|
if bz2:
|
|
os.remove(tarname("bz2"))
|
|
if os.path.exists(dirname()):
|
|
shutil.rmtree(dirname())
|
|
if os.path.exists(tmpname()):
|
|
os.remove(tmpname())
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|