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Merge with 3.4: Issue #24259: tarfile now raises a ReadError if an archive is truncated inside a data segment.

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Lars Gustäbel 2015-07-06 09:29:41 +02:00
commit e12aa62d68
3 changed files with 41 additions and 7 deletions
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23
Lib/test/test_tarfile.py
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@ -364,6 +364,29 @@ class CommonReadTest(ReadTest):
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, io.BytesIO(b"a" * 1024))
with open(tmpname, "r+b") as fobj:
fobj.truncate(size)
with tarfile.open(tmpname) as tar:
with self.assertRaisesRegex(tarfile.ReadError, "unexpected end of data"):
for t in tar:
pass
with tarfile.open(tmpname) as tar:
t = tar.next()
with self.assertRaisesRegex(tarfile.ReadError, "unexpected end of data"):
tar.extract(t, TEMPDIR)
with self.assertRaisesRegex(tarfile.ReadError, "unexpected end of data"):
tar.extractfile(t).read()
class MiscReadTestBase(CommonReadTest):
def requires_name_attribute(self):