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[3.12] gh-135034: Normalize link targets in tarfile, add os.path.realpath(strict='allow_missing') (GH-135037) #135066

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Merged
ambv merged 10 commits into from
Jun 3, 2025
Merged

[3.12] gh-135034: Normalize link targets in tarfile, add os.path.realpath(strict='allow_missing') (GH-135037) #135066

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c358142
[3.12] gh-135034: Normalize link targets in tarfile, add `os.path.rea…
ambv Jun 3, 2025
3c10cf0
Fix merge snafu
Yhg1s Jun 3, 2025
f5f9555
Fix test failure in test_tarfile
Yhg1s Jun 3, 2025
2b5673e
Drop backport of extra tests that don't really address security conce…
Yhg1s Jun 3, 2025
70f9db5
Fix a few tests, and a glaring logic error in the posixpath backport.
Yhg1s Jun 3, 2025
1d242c3
Fix Windows test_ntpath failures.
Yhg1s Jun 3, 2025
12ac4a5
Drop test methods for unreadable symlinks (on darwin), which aren't
Yhg1s Jun 3, 2025
8f53def
Don't export LinkFallbackError from tarfile.
Yhg1s Jun 3, 2025
2c2df0d
Add back test_realpath_unreadable_symlink_strict
encukou Jun 3, 2025
ead96bb
Fix merge error in backport.
Yhg1s Jun 3, 2025
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Fix a few tests, and a glaring logic error in the posixpath backport.
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@Yhg1s
Yhg1s committed Jun 3, 2025
commit 70f9db5b4006e4cf3cd2fff1c3f8262879374144
2 changes: 0 additions & 2 deletions Lib/posixpath.py
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Original file line number Diff line number Diff line change
Expand Up @@ -470,8 +470,6 @@ def _joinrealpath(path, rest, strict, seen):
try:
st = os.lstat(newpath)
except ignored_error:
if strict:
raise
is_link = False
else:
is_link = stat.S_ISLNK(st.st_mode)
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6 changes: 3 additions & 3 deletions Lib/test/test_posixpath.py
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Expand Up @@ -601,11 +601,11 @@ def test_realpath_relative(self, kwargs):
@_parameterize({}, {'strict': ALLOW_MISSING})
def test_realpath_missing_pardir(self, kwargs):
try:
os.symlink(TESTFN + "1", TESTFN)
os.symlink(os_helper.TESTFN + "1", os_helper.TESTFN)
self.assertEqual(
realpath("nonexistent/../" + TESTFN, **kwargs), ABSTFN + "1")
realpath("nonexistent/../" + os_helper.TESTFN, **kwargs), ABSTFN + "1")
finally:
os_helper.unlink(TESTFN)
os_helper.unlink(os_helper.TESTFN)

@os_helper.skip_unless_symlink
@skip_if_ABSTFN_contains_backslash
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