From b8797f4452aec6c220095fb9480d355b33c89dc406d8ed51b54478413ba1a9c4 Mon Sep 17 00:00:00 2001 From: Matej Cepl Date: Wed, 28 Jun 2023 19:51:47 +0000 Subject: [PATCH] - Update to Python 3.11.4: - gh-103142: The version of OpenSSL used in Windows and Mac installers has been upgraded to 1.1.1u to address CVE-2023-2650, CVE-2023-0465, CVE-2023-0466, CVE-2023-0464, as well as CVE-2023-0286, CVE-2022-4303, and CVE-2022-4303 fixed previously in 1.1.1t (gh-101727). - gh-102153: urllib.parse.urlsplit() now strips leading C0 control and space characters following the specification for URLs defined by WHATWG in response to CVE-2023-24329 (bsc#1208471). - gh-99889: Fixed a security in flaw in uu.decode() that could allow for directory traversal based on the input if no out_file was specified. - gh-104049: Do not expose the local on-disk location in directory indexes produced by http.client.SimpleHTTPRequestHandler. - gh-103935: trace.__main__ now uses io.open_code() for files to be executed instead of raw open(). - gh-102953: The extraction methods in tarfile, and shutil.unpack_archive(), have a new filter argument that allows limiting tar features than may be surprising or dangerous, such as creating files outside the destination directory. See Extraction filters for details (fixing CVE-2007-4559, bsc#1203750). - Remove upstreamed patches: - CVE-2007-4559-filter-tarfile_extractall.patch OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python311?expand=0&rev=71 --- CVE-2007-4559-filter-tarfile_extractall.patch | 2616 ----------------- Python-3.11.3.tar.xz | 3 - Python-3.11.3.tar.xz.asc | 16 - Python-3.11.4.tar.xz | 3 + Python-3.11.4.tar.xz.asc | 16 + python311.changes | 30 + python311.spec | 6 +- 7 files changed, 50 insertions(+), 2640 deletions(-) delete mode 100644 CVE-2007-4559-filter-tarfile_extractall.patch delete mode 100644 Python-3.11.3.tar.xz delete mode 100644 Python-3.11.3.tar.xz.asc create mode 100644 Python-3.11.4.tar.xz create mode 100644 Python-3.11.4.tar.xz.asc diff --git a/CVE-2007-4559-filter-tarfile_extractall.patch b/CVE-2007-4559-filter-tarfile_extractall.patch deleted file mode 100644 index 4419073..0000000 --- a/CVE-2007-4559-filter-tarfile_extractall.patch +++ /dev/null @@ -1,2616 +0,0 @@ -From b52ad18a766700be14382ba222033b2d75a33521 Mon Sep 17 00:00:00 2001 -From: Petr Viktorin -Date: Mon, 24 Apr 2023 10:58:06 +0200 -Subject: [PATCH 1/5] =?UTF-8?q?gh-102950:=20Implement=20PEP=20706=20?= - =?UTF-8?q?=E2=80=93=20Filter=20for=20tarfile.extractall=20(#102953)?= -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Backport of af530469954e8ad49f1e071ef31c844b9bfda414 ---- - Doc/library/shutil.rst | 25 - Doc/library/tarfile.rst | 458 ++++ - Doc/whatsnew/3.11.rst | 16 - Lib/shutil.py | 17 - Lib/tarfile.py | 351 +++ - Lib/test/test_shutil.py | 40 - Lib/test/test_tarfile.py | 984 +++++++++- - Misc/NEWS.d/next/Library/2023-03-23-15-24-38.gh-issue-102953.YR4KaK.rst | 4 - 8 files changed, 1799 insertions(+), 96 deletions(-) - create mode 100644 Misc/NEWS.d/next/Library/2023-03-23-15-24-38.gh-issue-102953.YR4KaK.rst - ---- a/Doc/library/shutil.rst -+++ b/Doc/library/shutil.rst -@@ -626,7 +626,7 @@ provided. They rely on the :mod:`zipfil - Remove the archive format *name* from the list of supported formats. - - --.. function:: unpack_archive(filename[, extract_dir[, format]]) -+.. function:: unpack_archive(filename[, extract_dir[, format[, filter]]]) - - Unpack an archive. *filename* is the full path of the archive. - -@@ -640,6 +640,15 @@ provided. They rely on the :mod:`zipfil - registered for that extension. In case none is found, - a :exc:`ValueError` is raised. - -+ The keyword-only *filter* argument, which was added in Python 3.11.4, -+ is passed to the underlying unpacking function. -+ For zip files, *filter* is not accepted. -+ For tar files, it is recommended to set it to ``'data'``, -+ unless using features specific to tar and UNIX-like filesystems. -+ (See :ref:`tarfile-extraction-filter` for details.) -+ The ``'data'`` filter will become the default for tar files -+ in Python 3.14. -+ - .. audit-event:: shutil.unpack_archive filename,extract_dir,format shutil.unpack_archive - - .. warning:: -@@ -652,6 +661,9 @@ provided. They rely on the :mod:`zipfil - .. versionchanged:: 3.7 - Accepts a :term:`path-like object` for *filename* and *extract_dir*. - -+ .. versionchanged:: 3.11.4 -+ Added the *filter* argument. -+ - .. function:: register_unpack_format(name, extensions, function[, extra_args[, description]]) - - Registers an unpack format. *name* is the name of the format and -@@ -659,11 +671,14 @@ provided. They rely on the :mod:`zipfil - ``.zip`` for Zip files. - - *function* is the callable that will be used to unpack archives. The -- callable will receive the path of the archive, followed by the directory -- the archive must be extracted to. -+ callable will receive: - -- When provided, *extra_args* is a sequence of ``(name, value)`` tuples that -- will be passed as keywords arguments to the callable. -+ - the path of the archive, as a positional argument; -+ - the directory the archive must be extracted to, as a positional argument; -+ - possibly a *filter* keyword argument, if it was given to -+ :func:`unpack_archive`; -+ - additional keyword arguments, specified by *extra_args* as a sequence -+ of ``(name, value)`` tuples. - - *description* can be provided to describe the format, and will be returned - by the :func:`get_unpack_formats` function. ---- a/Doc/library/tarfile.rst -+++ b/Doc/library/tarfile.rst -@@ -206,6 +206,38 @@ The :mod:`tarfile` module defines the fo - Is raised by :meth:`TarInfo.frombuf` if the buffer it gets is invalid. - - -+.. exception:: FilterError -+ -+ Base class for members :ref:`refused ` by -+ filters. -+ -+ .. attribute:: tarinfo -+ -+ Information about the member that the filter refused to extract, -+ as :ref:`TarInfo `. -+ -+.. exception:: AbsolutePathError -+ -+ Raised to refuse extracting a member with an absolute path. -+ -+.. exception:: OutsideDestinationError -+ -+ Raised to refuse extracting a member outside the destination directory. -+ -+.. exception:: SpecialFileError -+ -+ Raised to refuse extracting a special file (e.g. a device or pipe). -+ -+.. exception:: AbsoluteLinkError -+ -+ Raised to refuse extracting a symbolic link with an absolute path. -+ -+.. exception:: LinkOutsideDestinationError -+ -+ Raised to refuse extracting a symbolic link pointing outside the destination -+ directory. -+ -+ - The following constants are available at the module level: - - .. data:: ENCODING -@@ -316,11 +348,8 @@ be finalized; only the internally used f - *debug* can be set from ``0`` (no debug messages) up to ``3`` (all debug - messages). The messages are written to ``sys.stderr``. - -- If *errorlevel* is ``0``, all errors are ignored when using :meth:`TarFile.extract`. -- Nevertheless, they appear as error messages in the debug output, when debugging -- is enabled. If ``1``, all *fatal* errors are raised as :exc:`OSError` -- exceptions. If ``2``, all *non-fatal* errors are raised as :exc:`TarError` -- exceptions as well. -+ *errorlevel* controls how extraction errors are handled, -+ see :attr:`the corresponding attribute <~TarFile.errorlevel>`. - - The *encoding* and *errors* arguments define the character encoding to be - used for reading or writing the archive and how conversion errors are going -@@ -387,7 +416,7 @@ be finalized; only the internally used f - available. - - --.. method:: TarFile.extractall(path=".", members=None, *, numeric_owner=False) -+.. method:: TarFile.extractall(path=".", members=None, *, numeric_owner=False, filter=None) - - Extract all members from the archive to the current working directory or - directory *path*. If optional *members* is given, it must be a subset of the -@@ -401,6 +430,12 @@ be finalized; only the internally used f - are used to set the owner/group for the extracted files. Otherwise, the named - values from the tarfile are used. - -+ The *filter* argument, which was added in Python 3.11.4, specifies how -+ ``members`` are modified or rejected before extraction. -+ See :ref:`tarfile-extraction-filter` for details. -+ It is recommended to set this explicitly depending on which *tar* features -+ you need to support. -+ - .. warning:: - - Never extract archives from untrusted sources without prior inspection. -@@ -408,14 +443,20 @@ be finalized; only the internally used f - that have absolute filenames starting with ``"/"`` or filenames with two - dots ``".."``. - -+ Set ``filter='data'`` to prevent the most dangerous security issues, -+ and read the :ref:`tarfile-extraction-filter` section for details. -+ - .. versionchanged:: 3.5 - Added the *numeric_owner* parameter. - - .. versionchanged:: 3.6 - The *path* parameter accepts a :term:`path-like object`. - -+ .. versionchanged:: 3.11.4 -+ Added the *filter* parameter. -+ - --.. method:: TarFile.extract(member, path="", set_attrs=True, *, numeric_owner=False) -+.. method:: TarFile.extract(member, path="", set_attrs=True, *, numeric_owner=False, filter=None) - - Extract a member from the archive to the current working directory, using its - full name. Its file information is extracted as accurately as possible. *member* -@@ -423,9 +464,8 @@ be finalized; only the internally used f - directory using *path*. *path* may be a :term:`path-like object`. - File attributes (owner, mtime, mode) are set unless *set_attrs* is false. - -- If *numeric_owner* is :const:`True`, the uid and gid numbers from the tarfile -- are used to set the owner/group for the extracted files. Otherwise, the named -- values from the tarfile are used. -+ The *numeric_owner* and *filter* arguments are the same as -+ for :meth:`extractall`. - - .. note:: - -@@ -436,6 +476,9 @@ be finalized; only the internally used f - - See the warning for :meth:`extractall`. - -+ Set ``filter='data'`` to prevent the most dangerous security issues, -+ and read the :ref:`tarfile-extraction-filter` section for details. -+ - .. versionchanged:: 3.2 - Added the *set_attrs* parameter. - -@@ -445,6 +488,9 @@ be finalized; only the internally used f - .. versionchanged:: 3.6 - The *path* parameter accepts a :term:`path-like object`. - -+ .. versionchanged:: 3.11.4 -+ Added the *filter* parameter. -+ - - .. method:: TarFile.extractfile(member) - -@@ -457,6 +503,57 @@ be finalized; only the internally used f - .. versionchanged:: 3.3 - Return an :class:`io.BufferedReader` object. - -+.. attribute:: TarFile.errorlevel -+ :type: int -+ -+ If *errorlevel* is ``0``, errors are ignored when using :meth:`TarFile.extract` -+ and :meth:`TarFile.extractall`. -+ Nevertheless, they appear as error messages in the debug output when -+ *debug* is greater than 0. -+ If ``1`` (the default), all *fatal* errors are raised as :exc:`OSError` or -+ :exc:`FilterError` exceptions. If ``2``, all *non-fatal* errors are raised -+ as :exc:`TarError` exceptions as well. -+ -+ Some exceptions, e.g. ones caused by wrong argument types or data -+ corruption, are always raised. -+ -+ Custom :ref:`extraction filters ` -+ should raise :exc:`FilterError` for *fatal* errors -+ and :exc:`ExtractError` for *non-fatal* ones. -+ -+ Note that when an exception is raised, the archive may be partially -+ extracted. It is the user’s responsibility to clean up. -+ -+.. attribute:: TarFile.extraction_filter -+ -+ .. versionadded:: 3.11.4 -+ -+ The :ref:`extraction filter ` used -+ as a default for the *filter* argument of :meth:`~TarFile.extract` -+ and :meth:`~TarFile.extractall`. -+ -+ The attribute may be ``None`` or a callable. -+ String names are not allowed for this attribute, unlike the *filter* -+ argument to :meth:`~TarFile.extract`. -+ -+ If ``extraction_filter`` is ``None`` (the default), -+ calling an extraction method without a *filter* argument will -+ use the :func:`fully_trusted ` filter for -+ compatibility with previous Python versions. -+ -+ In Python 3.12+, leaving ``extraction_filter=None`` will emit a -+ ``DeprecationWarning``. -+ -+ In Python 3.14+, leaving ``extraction_filter=None`` will cause -+ extraction methods to use the :func:`data ` filter by default. -+ -+ The attribute may be set on instances or overridden in subclasses. -+ It also is possible to set it on the ``TarFile`` class itself to set a -+ global default, although, since it affects all uses of *tarfile*, -+ it is best practice to only do so in top-level applications or -+ :mod:`site configuration `. -+ To set a global default this way, a filter function needs to be wrapped in -+ :func:`staticmethod()` to prevent injection of a ``self`` argument. - - .. method:: TarFile.add(name, arcname=None, recursive=True, *, filter=None) - -@@ -532,7 +629,27 @@ permissions, owner etc.), it provides so - It does *not* contain the file's data itself. - - :class:`TarInfo` objects are returned by :class:`TarFile`'s methods --:meth:`getmember`, :meth:`getmembers` and :meth:`gettarinfo`. -+:meth:`~TarFile.getmember`, :meth:`~TarFile.getmembers` and -+:meth:`~TarFile.gettarinfo`. -+ -+Modifying the objects returned by :meth:`~!TarFile.getmember` or -+:meth:`~!TarFile.getmembers` will affect all subsequent -+operations on the archive. -+For cases where this is unwanted, you can use :mod:`copy.copy() ` or -+call the :meth:`~TarInfo.replace` method to create a modified copy in one step. -+ -+Several attributes can be set to ``None`` to indicate that a piece of metadata -+is unused or unknown. -+Different :class:`TarInfo` methods handle ``None`` differently: -+ -+- The :meth:`~TarFile.extract` or :meth:`~TarFile.extractall` methods will -+ ignore the corresponding metadata, leaving it set to a default. -+- :meth:`~TarFile.addfile` will fail. -+- :meth:`~TarFile.list` will print a placeholder string. -+ -+ -+.. versionchanged:: 3.11.4 -+ Added :meth:`~TarInfo.replace` and handling of ``None``. - - - .. class:: TarInfo(name="") -@@ -566,24 +683,39 @@ A ``TarInfo`` object has the following p - - - .. attribute:: TarInfo.name -+ :type: str - - Name of the archive member. - - - .. attribute:: TarInfo.size -+ :type: int - - Size in bytes. - - - .. attribute:: TarInfo.mtime -+ :type: int | float - -- Time of last modification. -+ Time of last modification in seconds since the :ref:`epoch `, -+ as in :attr:`os.stat_result.st_mtime`. - -+ .. versionchanged:: 3.11.4 -+ -+ Can be set to ``None`` for :meth:`~TarFile.extract` and -+ :meth:`~TarFile.extractall`, causing extraction to skip applying this -+ attribute. - - .. attribute:: TarInfo.mode -+ :type: int -+ -+ Permission bits, as for :func:`os.chmod`. - -- Permission bits. -+ .. versionchanged:: 3.11.4 - -+ Can be set to ``None`` for :meth:`~TarFile.extract` and -+ :meth:`~TarFile.extractall`, causing extraction to skip applying this -+ attribute. - - .. attribute:: TarInfo.type - -@@ -595,35 +727,76 @@ A ``TarInfo`` object has the following p - - - .. attribute:: TarInfo.linkname -+ :type: str - - Name of the target file name, which is only present in :class:`TarInfo` objects - of type :const:`LNKTYPE` and :const:`SYMTYPE`. - - - .. attribute:: TarInfo.uid -+ :type: int - - User ID of the user who originally stored this member. - -+ .. versionchanged:: 3.11.4 -+ -+ Can be set to ``None`` for :meth:`~TarFile.extract` and -+ :meth:`~TarFile.extractall`, causing extraction to skip applying this -+ attribute. - - .. attribute:: TarInfo.gid -+ :type: int - - Group ID of the user who originally stored this member. - -+ .. versionchanged:: 3.11.4 -+ -+ Can be set to ``None`` for :meth:`~TarFile.extract` and -+ :meth:`~TarFile.extractall`, causing extraction to skip applying this -+ attribute. - - .. attribute:: TarInfo.uname -+ :type: str - - User name. - -+ .. versionchanged:: 3.11.4 -+ -+ Can be set to ``None`` for :meth:`~TarFile.extract` and -+ :meth:`~TarFile.extractall`, causing extraction to skip applying this -+ attribute. - - .. attribute:: TarInfo.gname -+ :type: str - - Group name. - -+ .. versionchanged:: 3.11.4 -+ -+ Can be set to ``None`` for :meth:`~TarFile.extract` and -+ :meth:`~TarFile.extractall`, causing extraction to skip applying this -+ attribute. - - .. attribute:: TarInfo.pax_headers -+ :type: dict - - A dictionary containing key-value pairs of an associated pax extended header. - -+.. method:: TarInfo.replace(name=..., mtime=..., mode=..., linkname=..., -+ uid=..., gid=..., uname=..., gname=..., -+ deep=True) -+ -+ .. versionadded:: 3.11.4 -+ -+ Return a *new* copy of the :class:`!TarInfo` object with the given attributes -+ changed. For example, to return a ``TarInfo`` with the group name set to -+ ``'staff'``, use:: -+ -+ new_tarinfo = old_tarinfo.replace(gname='staff') -+ -+ By default, a deep copy is made. -+ If *deep* is false, the copy is shallow, i.e. ``pax_headers`` -+ and any custom attributes are shared with the original ``TarInfo`` object. - - A :class:`TarInfo` object also provides some convenient query methods: - -@@ -673,9 +846,259 @@ A :class:`TarInfo` object also provides - Return :const:`True` if it is one of character device, block device or FIFO. - - -+.. _tarfile-extraction-filter: -+ -+Extraction filters -+------------------ -+ -+.. versionadded:: 3.11.4 -+ -+The *tar* format is designed to capture all details of a UNIX-like filesystem, -+which makes it very powerful. -+Unfortunately, the features make it easy to create tar files that have -+unintended -- and possibly malicious -- effects when extracted. -+For example, extracting a tar file can overwrite arbitrary files in various -+ways (e.g. by using absolute paths, ``..`` path components, or symlinks that -+affect later members). -+ -+In most cases, the full functionality is not needed. -+Therefore, *tarfile* supports extraction filters: a mechanism to limit -+functionality, and thus mitigate some of the security issues. -+ -+.. seealso:: -+ -+ :pep:`706` -+ Contains further motivation and rationale behind the design. -+ -+The *filter* argument to :meth:`TarFile.extract` or :meth:`~TarFile.extractall` -+can be: -+ -+* the string ``'fully_trusted'``: Honor all metadata as specified in the -+ archive. -+ Should be used if the user trusts the archive completely, or implements -+ their own complex verification. -+ -+* the string ``'tar'``: Honor most *tar*-specific features (i.e. features of -+ UNIX-like filesystems), but block features that are very likely to be -+ surprising or malicious. See :func:`tar_filter` for details. -+ -+* the string ``'data'``: Ignore or block most features specific to UNIX-like -+ filesystems. Intended for extracting cross-platform data archives. -+ See :func:`data_filter` for details. -+ -+* ``None`` (default): Use :attr:`TarFile.extraction_filter`. -+ -+ If that is also ``None`` (the default), the ``'fully_trusted'`` -+ filter will be used (for compatibility with earlier versions of Python). -+ -+ In Python 3.12, the default will emit a ``DeprecationWarning``. -+ -+ In Python 3.14, the ``'data'`` filter will become the default instead. -+ It's possible to switch earlier; see :attr:`TarFile.extraction_filter`. -+ -+* A callable which will be called for each extracted member with a -+ :ref:`TarInfo ` describing the member and the destination -+ path to where the archive is extracted (i.e. the same path is used for all -+ members):: -+ -+ filter(/, member: TarInfo, path: str) -> TarInfo | None -+ -+ The callable is called just before each member is extracted, so it can -+ take the current state of the disk into account. -+ It can: -+ -+ - return a :class:`TarInfo` object which will be used instead of the metadata -+ in the archive, or -+ - return ``None``, in which case the member will be skipped, or -+ - raise an exception to abort the operation or skip the member, -+ depending on :attr:`~TarFile.errorlevel`. -+ Note that when extraction is aborted, :meth:`~TarFile.extractall` may leave -+ the archive partially extracted. It does not attempt to clean up. -+ -+Default named filters -+~~~~~~~~~~~~~~~~~~~~~ -+ -+The pre-defined, named filters are available as functions, so they can be -+reused in custom filters: -+ -+.. function:: fully_trusted_filter(/, member, path) -+ -+ Return *member* unchanged. -+ -+ This implements the ``'fully_trusted'`` filter. -+ -+.. function:: tar_filter(/, member, path) -+ -+ Implements the ``'tar'`` filter. -+ -+ - Strip leading slashes (``/`` and :attr:`os.sep`) from filenames. -+ - :ref:`Refuse ` to extract files with absolute -+ paths (in case the name is absolute -+ even after stripping slashes, e.g. ``C:/foo`` on Windows). -+ This raises :class:`~tarfile.AbsolutePathError`. -+ - :ref:`Refuse ` to extract files whose absolute -+ path (after following symlinks) would end up outside the destination. -+ This raises :class:`~tarfile.OutsideDestinationError`. -+ - Clear high mode bits (setuid, setgid, sticky) and group/other write bits -+ (:attr:`~stat.S_IWGRP`|:attr:`~stat.S_IWOTH`). -+ -+ Return the modified ``TarInfo`` member. -+ -+.. function:: data_filter(/, member, path) -+ -+ Implements the ``'data'`` filter. -+ In addition to what ``tar_filter`` does: -+ -+ - :ref:`Refuse ` to extract links (hard or soft) -+ that link to absolute paths, or ones that link outside the destination. -+ -+ This raises :class:`~tarfile.AbsoluteLinkError` or -+ :class:`~tarfile.LinkOutsideDestinationError`. -+ -+ Note that such files are refused even on platforms that do not support -+ symbolic links. -+ -+ - :ref:`Refuse ` to extract device files -+ (including pipes). -+ This raises :class:`~tarfile.SpecialFileError`. -+ -+ - For regular files, including hard links: -+ -+ - Set the owner read and write permissions -+ (:attr:`~stat.S_IRUSR`|:attr:`~stat.S_IWUSR`). -+ - Remove the group & other executable permission -+ (:attr:`~stat.S_IXGRP`|:attr:`~stat.S_IXOTH`) -+ if the owner doesn’t have it (:attr:`~stat.S_IXUSR`). -+ -+ - For other files (directories), set ``mode`` to ``None``, so -+ that extraction methods skip applying permission bits. -+ - Set user and group info (``uid``, ``gid``, ``uname``, ``gname``) -+ to ``None``, so that extraction methods skip setting it. -+ -+ Return the modified ``TarInfo`` member. -+ -+ -+.. _tarfile-extraction-refuse: -+ -+Filter errors -+~~~~~~~~~~~~~ -+ -+When a filter refuses to extract a file, it will raise an appropriate exception, -+a subclass of :class:`~tarfile.FilterError`. -+This will abort the extraction if :attr:`TarFile.errorlevel` is 1 or more. -+With ``errorlevel=0`` the error will be logged and the member will be skipped, -+but extraction will continue. -+ -+ -+Hints for further verification -+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -+ -+Even with ``filter='data'``, *tarfile* is not suited for extracting untrusted -+files without prior inspection. -+Among other issues, the pre-defined filters do not prevent denial-of-service -+attacks. Users should do additional checks. -+ -+Here is an incomplete list of things to consider: -+ -+* Extract to a :func:`new temporary directory ` -+ to prevent e.g. exploiting pre-existing links, and to make it easier to -+ clean up after a failed extraction. -+* When working with untrusted data, use external (e.g. OS-level) limits on -+ disk, memory and CPU usage. -+* Check filenames against an allow-list of characters -+ (to filter out control characters, confusables, foreign path separators, -+ etc.). -+* Check that filenames have expected extensions (discouraging files that -+ execute when you “click on them”, or extension-less files like Windows special device names). -+* Limit the number of extracted files, total size of extracted data, -+ filename length (including symlink length), and size of individual files. -+* Check for files that would be shadowed on case-insensitive filesystems. -+ -+Also note that: -+ -+* Tar files may contain multiple versions of the same file. -+ Later ones are expected to overwrite any earlier ones. -+ This feature is crucial to allow updating tape archives, but can be abused -+ maliciously. -+* *tarfile* does not protect against issues with “live” data, -+ e.g. an attacker tinkering with the destination (or source) directory while -+ extraction (or archiving) is in progress. -+ -+ -+Supporting older Python versions -+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -+ -+Extraction filters were added to Python 3.12, and are backported to older -+versions as security updates. -+To check whether the feature is available, use e.g. -+``hasattr(tarfile, 'data_filter')`` rather than checking the Python version. -+ -+The following examples show how to support Python versions with and without -+the feature. -+Note that setting ``extraction_filter`` will affect any subsequent operations. -+ -+* Fully trusted archive:: -+ -+ my_tarfile.extraction_filter = (lambda member, path: member) -+ my_tarfile.extractall() -+ -+* Use the ``'data'`` filter if available, but revert to Python 3.11 behavior -+ (``'fully_trusted'``) if this feature is not available:: -+ -+ my_tarfile.extraction_filter = getattr(tarfile, 'data_filter', -+ (lambda member, path: member)) -+ my_tarfile.extractall() -+ -+* Use the ``'data'`` filter; *fail* if it is not available:: -+ -+ my_tarfile.extractall(filter=tarfile.data_filter) -+ -+ or:: -+ -+ my_tarfile.extraction_filter = tarfile.data_filter -+ my_tarfile.extractall() -+ -+* Use the ``'data'`` filter; *warn* if it is not available:: -+ -+ if hasattr(tarfile, 'data_filter'): -+ my_tarfile.extractall(filter='data') -+ else: -+ # remove this when no longer needed -+ warn_the_user('Extracting may be unsafe; consider updating Python') -+ my_tarfile.extractall() -+ -+ -+Stateful extraction filter example -+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -+ -+While *tarfile*'s extraction methods take a simple *filter* callable, -+custom filters may be more complex objects with an internal state. -+It may be useful to write these as context managers, to be used like this:: -+ -+ with StatefulFilter() as filter_func: -+ tar.extractall(path, filter=filter_func) -+ -+Such a filter can be written as, for example:: -+ -+ class StatefulFilter: -+ def __init__(self): -+ self.file_count = 0 -+ -+ def __enter__(self): -+ return self -+ -+ def __call__(self, member, path): -+ self.file_count += 1 -+ return member -+ -+ def __exit__(self, *exc_info): -+ print(f'{self.file_count} files extracted') -+ -+ - .. _tarfile-commandline: - .. program:: tarfile - -+ - Command-Line Interface - ---------------------- - -@@ -745,6 +1168,15 @@ Command-line options - - Verbose output. - -+.. cmdoption:: --filter -+ -+ Specifies the *filter* for ``--extract``. -+ See :ref:`tarfile-extraction-filter` for details. -+ Only string names are accepted (that is, ``fully_trusted``, ``tar``, -+ and ``data``). -+ -+ .. versionadded:: 3.11.4 -+ - .. _tar-examples: - - Examples ---- a/Doc/whatsnew/3.11.rst -+++ b/Doc/whatsnew/3.11.rst -@@ -2702,4 +2702,20 @@ Removed - (Contributed by Inada Naoki in :issue:`44029`.) - - -+Notable Changes in 3.11.4 -+========================= -+ -+tarfile -+------- -+ -+* The extraction methods in :mod:`tarfile`, and :func:`shutil.unpack_archive`, -+ have a new a *filter* argument that allows limiting tar features than may be -+ surprising or dangerous, such as creating files outside the destination -+ directory. -+ See :ref:`tarfile-extraction-filter` for details. -+ In Python 3.12, use without the *filter* argument will show a -+ :exc:`DeprecationWarning`. -+ In Python 3.14, the default will switch to ``'data'``. -+ (Contributed by Petr Viktorin in :pep:`706`.) -+ - .. _libb2: https://www.blake2.net/ ---- a/Lib/shutil.py -+++ b/Lib/shutil.py -@@ -1231,7 +1231,7 @@ def _unpack_zipfile(filename, extract_di - finally: - zip.close() - --def _unpack_tarfile(filename, extract_dir): -+def _unpack_tarfile(filename, extract_dir, *, filter=None): - """Unpack tar/tar.gz/tar.bz2/tar.xz `filename` to `extract_dir` - """ - import tarfile # late import for breaking circular dependency -@@ -1241,7 +1241,7 @@ def _unpack_tarfile(filename, extract_di - raise ReadError( - "%s is not a compressed or uncompressed tar file" % filename) - try: -- tarobj.extractall(extract_dir) -+ tarobj.extractall(extract_dir, filter=filter) - finally: - tarobj.close() - -@@ -1274,7 +1274,7 @@ def _find_unpack_format(filename): - return name - return None - --def unpack_archive(filename, extract_dir=None, format=None): -+def unpack_archive(filename, extract_dir=None, format=None, *, filter=None): - """Unpack an archive. - - `filename` is the name of the archive. -@@ -1288,6 +1288,9 @@ def unpack_archive(filename, extract_dir - was registered for that extension. - - In case none is found, a ValueError is raised. -+ -+ If `filter` is given, it is passed to the underlying -+ extraction function. - """ - sys.audit("shutil.unpack_archive", filename, extract_dir, format) - -@@ -1297,6 +1300,10 @@ def unpack_archive(filename, extract_dir - extract_dir = os.fspath(extract_dir) - filename = os.fspath(filename) - -+ if filter is None: -+ filter_kwargs = {} -+ else: -+ filter_kwargs = {'filter': filter} - if format is not None: - try: - format_info = _UNPACK_FORMATS[format] -@@ -1304,7 +1311,7 @@ def unpack_archive(filename, extract_dir - raise ValueError("Unknown unpack format '{0}'".format(format)) from None - - func = format_info[1] -- func(filename, extract_dir, **dict(format_info[2])) -+ func(filename, extract_dir, **dict(format_info[2]), **filter_kwargs) - else: - # we need to look at the registered unpackers supported extensions - format = _find_unpack_format(filename) -@@ -1312,7 +1319,7 @@ def unpack_archive(filename, extract_dir - raise ReadError("Unknown archive format '{0}'".format(filename)) - - func = _UNPACK_FORMATS[format][1] -- kwargs = dict(_UNPACK_FORMATS[format][2]) -+ kwargs = dict(_UNPACK_FORMATS[format][2]) | filter_kwargs - func(filename, extract_dir, **kwargs) - - ---- a/Lib/tarfile.py -+++ b/Lib/tarfile.py -@@ -45,6 +45,7 @@ import time - import struct - import copy - import re -+import warnings - - try: - import pwd -@@ -70,6 +71,7 @@ __all__ = ["TarFile", "TarInfo", "is_tar - "ENCODING", "USTAR_FORMAT", "GNU_FORMAT", "PAX_FORMAT", - "DEFAULT_FORMAT", "open"] - -+ - #--------------------------------------------------------- - # tar constants - #--------------------------------------------------------- -@@ -157,6 +159,8 @@ else: - def stn(s, length, encoding, errors): - """Convert a string to a null-terminated bytes object. - """ -+ if s is None: -+ raise ValueError("metadata cannot contain None") - s = s.encode(encoding, errors) - return s[:length] + (length - len(s)) * NUL - -@@ -708,9 +712,127 @@ class ExFileObject(io.BufferedReader): - super().__init__(fileobj) - #class ExFileObject - -+ -+#----------------------------- -+# extraction filters (PEP 706) -+#----------------------------- -+ -+class FilterError(TarError): -+ pass -+ -+class AbsolutePathError(FilterError): -+ def __init__(self, tarinfo): -+ self.tarinfo = tarinfo -+ super().__init__(f'member {tarinfo.name!r} has an absolute path') -+ -+class OutsideDestinationError(FilterError): -+ def __init__(self, tarinfo, path): -+ self.tarinfo = tarinfo -+ self._path = path -+ super().__init__(f'{tarinfo.name!r} would be extracted to {path!r}, ' -+ + 'which is outside the destination') -+ -+class SpecialFileError(FilterError): -+ def __init__(self, tarinfo): -+ self.tarinfo = tarinfo -+ super().__init__(f'{tarinfo.name!r} is a special file') -+ -+class AbsoluteLinkError(FilterError): -+ def __init__(self, tarinfo): -+ self.tarinfo = tarinfo -+ super().__init__(f'{tarinfo.name!r} is a symlink to an absolute path') -+ -+class LinkOutsideDestinationError(FilterError): -+ def __init__(self, tarinfo, path): -+ self.tarinfo = tarinfo -+ self._path = path -+ super().__init__(f'{tarinfo.name!r} would link to {path!r}, ' -+ + 'which is outside the destination') -+ -+def _get_filtered_attrs(member, dest_path, for_data=True): -+ new_attrs = {} -+ name = member.name -+ dest_path = os.path.realpath(dest_path) -+ # Strip leading / (tar's directory separator) from filenames. -+ # Include os.sep (target OS directory separator) as well. -+ if name.startswith(('/', os.sep)): -+ name = new_attrs['name'] = member.path.lstrip('/' + os.sep) -+ if os.path.isabs(name): -+ # Path is absolute even after stripping. -+ # For example, 'C:/foo' on Windows. -+ raise AbsolutePathError(member) -+ # Ensure we stay in the destination -+ target_path = os.path.realpath(os.path.join(dest_path, name)) -+ if os.path.commonpath([target_path, dest_path]) != dest_path: -+ raise OutsideDestinationError(member, target_path) -+ # Limit permissions (no high bits, and go-w) -+ mode = member.mode -+ if mode is not None: -+ # Strip high bits & group/other write bits -+ mode = mode & 0o755 -+ if for_data: -+ # For data, handle permissions & file types -+ if member.isreg() or member.islnk(): -+ if not mode & 0o100: -+ # Clear executable bits if not executable by user -+ mode &= ~0o111 -+ # Ensure owner can read & write -+ mode |= 0o600 -+ elif member.isdir() or member.issym(): -+ # Ignore mode for directories & symlinks -+ mode = None -+ else: -+ # Reject special files -+ raise SpecialFileError(member) -+ if mode != member.mode: -+ new_attrs['mode'] = mode -+ if for_data: -+ # Ignore ownership for 'data' -+ if member.uid is not None: -+ new_attrs['uid'] = None -+ if member.gid is not None: -+ new_attrs['gid'] = None -+ if member.uname is not None: -+ new_attrs['uname'] = None -+ if member.gname is not None: -+ new_attrs['gname'] = None -+ # Check link destination for 'data' -+ if member.islnk() or member.issym(): -+ if os.path.isabs(member.linkname): -+ raise AbsoluteLinkError(member) -+ target_path = os.path.realpath(os.path.join(dest_path, member.linkname)) -+ if os.path.commonpath([target_path, dest_path]) != dest_path: -+ raise LinkOutsideDestinationError(member, target_path) -+ return new_attrs -+ -+def fully_trusted_filter(member, dest_path): -+ return member -+ -+def tar_filter(member, dest_path): -+ new_attrs = _get_filtered_attrs(member, dest_path, False) -+ if new_attrs: -+ return member.replace(**new_attrs, deep=False) -+ return member -+ -+def data_filter(member, dest_path): -+ new_attrs = _get_filtered_attrs(member, dest_path, True) -+ if new_attrs: -+ return member.replace(**new_attrs, deep=False) -+ return member -+ -+_NAMED_FILTERS = { -+ "fully_trusted": fully_trusted_filter, -+ "tar": tar_filter, -+ "data": data_filter, -+} -+ - #------------------ - # Exported Classes - #------------------ -+ -+# Sentinel for replace() defaults, meaning "don't change the attribute" -+_KEEP = object() -+ - class TarInfo(object): - """Informational class which holds the details about an - archive member given by a tar header block. -@@ -791,12 +913,44 @@ class TarInfo(object): - def __repr__(self): - return "<%s %r at %#x>" % (self.__class__.__name__,self.name,id(self)) - -+ def replace(self, *, -+ name=_KEEP, mtime=_KEEP, mode=_KEEP, linkname=_KEEP, -+ uid=_KEEP, gid=_KEEP, uname=_KEEP, gname=_KEEP, -+ deep=True, _KEEP=_KEEP): -+ """Return a deep copy of self with the given attributes replaced. -+ """ -+ if deep: -+ result = copy.deepcopy(self) -+ else: -+ result = copy.copy(self) -+ if name is not _KEEP: -+ result.name = name -+ if mtime is not _KEEP: -+ result.mtime = mtime -+ if mode is not _KEEP: -+ result.mode = mode -+ if linkname is not _KEEP: -+ result.linkname = linkname -+ if uid is not _KEEP: -+ result.uid = uid -+ if gid is not _KEEP: -+ result.gid = gid -+ if uname is not _KEEP: -+ result.uname = uname -+ if gname is not _KEEP: -+ result.gname = gname -+ return result -+ - def get_info(self): - """Return the TarInfo's attributes as a dictionary. - """ -+ if self.mode is None: -+ mode = None -+ else: -+ mode = self.mode & 0o7777 - info = { - "name": self.name, -- "mode": self.mode & 0o7777, -+ "mode": mode, - "uid": self.uid, - "gid": self.gid, - "size": self.size, -@@ -819,6 +973,9 @@ class TarInfo(object): - """Return a tar header as a string of 512 byte blocks. - """ - info = self.get_info() -+ for name, value in info.items(): -+ if value is None: -+ raise ValueError("%s may not be None" % name) - - if format == USTAR_FORMAT: - return self.create_ustar_header(info, encoding, errors) -@@ -949,6 +1106,12 @@ class TarInfo(object): - devmajor = stn("", 8, encoding, errors) - devminor = stn("", 8, encoding, errors) - -+ # None values in metadata should cause ValueError. -+ # itn()/stn() do this for all fields except type. -+ filetype = info.get("type", REGTYPE) -+ if filetype is None: -+ raise ValueError("TarInfo.type must not be None") -+ - parts = [ - stn(info.get("name", ""), 100, encoding, errors), - itn(info.get("mode", 0) & 0o7777, 8, format), -@@ -957,7 +1120,7 @@ class TarInfo(object): - itn(info.get("size", 0), 12, format), - itn(info.get("mtime", 0), 12, format), - b" ", # checksum field -- info.get("type", REGTYPE), -+ filetype, - stn(info.get("linkname", ""), 100, encoding, errors), - info.get("magic", POSIX_MAGIC), - stn(info.get("uname", ""), 32, encoding, errors), -@@ -1467,6 +1630,8 @@ class TarFile(object): - - fileobject = ExFileObject # The file-object for extractfile(). - -+ extraction_filter = None # The default filter for extraction. -+ - def __init__(self, name=None, mode="r", fileobj=None, format=None, - tarinfo=None, dereference=None, ignore_zeros=None, encoding=None, - errors="surrogateescape", pax_headers=None, debug=None, -@@ -1939,7 +2104,10 @@ class TarFile(object): - members = self - for tarinfo in members: - if verbose: -- _safe_print(stat.filemode(tarinfo.mode)) -+ if tarinfo.mode is None: -+ _safe_print("??????????") -+ else: -+ _safe_print(stat.filemode(tarinfo.mode)) - _safe_print("%s/%s" % (tarinfo.uname or tarinfo.uid, - tarinfo.gname or tarinfo.gid)) - if tarinfo.ischr() or tarinfo.isblk(): -@@ -1947,8 +2115,11 @@ class TarFile(object): - ("%d,%d" % (tarinfo.devmajor, tarinfo.devminor))) - else: - _safe_print("%10d" % tarinfo.size) -- _safe_print("%d-%02d-%02d %02d:%02d:%02d" \ -- % time.localtime(tarinfo.mtime)[:6]) -+ if tarinfo.mtime is None: -+ _safe_print("????-??-?? ??:??:??") -+ else: -+ _safe_print("%d-%02d-%02d %02d:%02d:%02d" \ -+ % time.localtime(tarinfo.mtime)[:6]) - - _safe_print(tarinfo.name + ("/" if tarinfo.isdir() else "")) - -@@ -2035,32 +2206,58 @@ class TarFile(object): - - self.members.append(tarinfo) - -- def extractall(self, path=".", members=None, *, numeric_owner=False): -+ def _get_filter_function(self, filter): -+ if filter is None: -+ filter = self.extraction_filter -+ if filter is None: -+ return fully_trusted_filter -+ if isinstance(filter, str): -+ raise TypeError( -+ 'String names are not supported for ' -+ + 'TarFile.extraction_filter. Use a function such as ' -+ + 'tarfile.data_filter directly.') -+ return filter -+ if callable(filter): -+ return filter -+ try: -+ return _NAMED_FILTERS[filter] -+ except KeyError: -+ raise ValueError(f"filter {filter!r} not found") from None -+ -+ def extractall(self, path=".", members=None, *, numeric_owner=False, -+ filter=None): - """Extract all members from the archive to the current working - directory and set owner, modification time and permissions on - directories afterwards. `path' specifies a different directory - to extract to. `members' is optional and must be a subset of the - list returned by getmembers(). If `numeric_owner` is True, only - the numbers for user/group names are used and not the names. -+ -+ The `filter` function will be called on each member just -+ before extraction. -+ It can return a changed TarInfo or None to skip the member. -+ String names of common filters are accepted. - """ - directories = [] - -+ filter_function = self._get_filter_function(filter) - if members is None: - members = self - -- for tarinfo in members: -+ for member in members: -+ tarinfo = self._get_extract_tarinfo(member, filter_function, path) -+ if tarinfo is None: -+ continue - if tarinfo.isdir(): -- # Extract directories with a safe mode. -+ # For directories, delay setting attributes until later, -+ # since permissions can interfere with extraction and -+ # extracting contents can reset mtime. - directories.append(tarinfo) -- tarinfo = copy.copy(tarinfo) -- tarinfo.mode = 0o700 -- # Do not set_attrs directories, as we will do that further down -- self.extract(tarinfo, path, set_attrs=not tarinfo.isdir(), -- numeric_owner=numeric_owner) -+ self._extract_one(tarinfo, path, set_attrs=not tarinfo.isdir(), -+ numeric_owner=numeric_owner) - - # Reverse sort directories. -- directories.sort(key=lambda a: a.name) -- directories.reverse() -+ directories.sort(key=lambda a: a.name, reverse=True) - - # Set correct owner, mtime and filemode on directories. - for tarinfo in directories: -@@ -2070,12 +2267,10 @@ class TarFile(object): - self.utime(tarinfo, dirpath) - self.chmod(tarinfo, dirpath) - except ExtractError as e: -- if self.errorlevel > 1: -- raise -- else: -- self._dbg(1, "tarfile: %s" % e) -+ self._handle_nonfatal_error(e) - -- def extract(self, member, path="", set_attrs=True, *, numeric_owner=False): -+ def extract(self, member, path="", set_attrs=True, *, numeric_owner=False, -+ filter=None): - """Extract a member from the archive to the current working directory, - using its full name. Its file information is extracted as accurately - as possible. `member' may be a filename or a TarInfo object. You can -@@ -2083,35 +2278,70 @@ class TarFile(object): - mtime, mode) are set unless `set_attrs' is False. If `numeric_owner` - is True, only the numbers for user/group names are used and not - the names. -+ -+ The `filter` function will be called before extraction. -+ It can return a changed TarInfo or None to skip the member. -+ String names of common filters are accepted. - """ -- self._check("r") -+ filter_function = self._get_filter_function(filter) -+ tarinfo = self._get_extract_tarinfo(member, filter_function, path) -+ if tarinfo is not None: -+ self._extract_one(tarinfo, path, set_attrs, numeric_owner) - -+ def _get_extract_tarinfo(self, member, filter_function, path): -+ """Get filtered TarInfo (or None) from member, which might be a str""" - if isinstance(member, str): - tarinfo = self.getmember(member) - else: - tarinfo = member - -+ unfiltered = tarinfo -+ try: -+ tarinfo = filter_function(tarinfo, path) -+ except (OSError, FilterError) as e: -+ self._handle_fatal_error(e) -+ except ExtractError as e: -+ self._handle_nonfatal_error(e) -+ if tarinfo is None: -+ self._dbg(2, "tarfile: Excluded %r" % unfiltered.name) -+ return None - # Prepare the link target for makelink(). - if tarinfo.islnk(): -+ tarinfo = copy.copy(tarinfo) - tarinfo._link_target = os.path.join(path, tarinfo.linkname) -+ return tarinfo -+ -+ def _extract_one(self, tarinfo, path, set_attrs, numeric_owner): -+ """Extract from filtered tarinfo to disk""" -+ self._check("r") - - try: - self._extract_member(tarinfo, os.path.join(path, tarinfo.name), - set_attrs=set_attrs, - numeric_owner=numeric_owner) - except OSError as e: -- if self.errorlevel > 0: -- raise -- else: -- if e.filename is None: -- self._dbg(1, "tarfile: %s" % e.strerror) -- else: -- self._dbg(1, "tarfile: %s %r" % (e.strerror, e.filename)) -+ self._handle_fatal_error(e) - except ExtractError as e: -- if self.errorlevel > 1: -- raise -+ self._handle_nonfatal_error(e) -+ -+ def _handle_nonfatal_error(self, e): -+ """Handle non-fatal error (ExtractError) according to errorlevel""" -+ if self.errorlevel > 1: -+ raise -+ else: -+ self._dbg(1, "tarfile: %s" % e) -+ -+ def _handle_fatal_error(self, e): -+ """Handle "fatal" error according to self.errorlevel""" -+ if self.errorlevel > 0: -+ raise -+ elif isinstance(e, OSError): -+ if e.filename is None: -+ self._dbg(1, "tarfile: %s" % e.strerror) - else: -- self._dbg(1, "tarfile: %s" % e) -+ self._dbg(1, "tarfile: %s %r" % (e.strerror, e.filename)) -+ else: -+ self._dbg(1, "tarfile: %s %s" % (type(e).__name__, e)) - - def extractfile(self, member): - """Extract a member from the archive as a file object. `member' may be -@@ -2198,9 +2428,13 @@ class TarFile(object): - """Make a directory called targetpath. - """ - try: -- # Use a safe mode for the directory, the real mode is set -- # later in _extract_member(). -- os.mkdir(targetpath, 0o700) -+ if tarinfo.mode is None: -+ # Use the system's default mode -+ os.mkdir(targetpath) -+ else: -+ # Use a safe mode for the directory, the real mode is set -+ # later in _extract_member(). -+ os.mkdir(targetpath, 0o700) - except FileExistsError: - pass - -@@ -2243,6 +2477,9 @@ class TarFile(object): - raise ExtractError("special devices not supported by system") - - mode = tarinfo.mode -+ if mode is None: -+ # Use mknod's default -+ mode = 0o600 - if tarinfo.isblk(): - mode |= stat.S_IFBLK - else: -@@ -2264,7 +2501,6 @@ class TarFile(object): - os.unlink(targetpath) - os.symlink(tarinfo.linkname, targetpath) - else: -- # See extract(). - if os.path.exists(tarinfo._link_target): - os.link(tarinfo._link_target, targetpath) - else: -@@ -2289,15 +2525,19 @@ class TarFile(object): - u = tarinfo.uid - if not numeric_owner: - try: -- if grp: -+ if grp and tarinfo.gname: - g = grp.getgrnam(tarinfo.gname)[2] - except KeyError: - pass - try: -- if pwd: -+ if pwd and tarinfo.uname: - u = pwd.getpwnam(tarinfo.uname)[2] - except KeyError: - pass -+ if g is None: -+ g = -1 -+ if u is None: -+ u = -1 - try: - if tarinfo.issym() and hasattr(os, "lchown"): - os.lchown(targetpath, u, g) -@@ -2309,6 +2549,8 @@ class TarFile(object): - def chmod(self, tarinfo, targetpath): - """Set file permissions of targetpath according to tarinfo. - """ -+ if tarinfo.mode is None: -+ return - try: - os.chmod(targetpath, tarinfo.mode) - except OSError as e: -@@ -2317,10 +2559,13 @@ class TarFile(object): - def utime(self, tarinfo, targetpath): - """Set modification time of targetpath according to tarinfo. - """ -+ mtime = tarinfo.mtime -+ if mtime is None: -+ return - if not hasattr(os, 'utime'): - return - try: -- os.utime(targetpath, (tarinfo.mtime, tarinfo.mtime)) -+ os.utime(targetpath, (mtime, mtime)) - except OSError as e: - raise ExtractError("could not change modification time") from e - -@@ -2398,13 +2643,26 @@ class TarFile(object): - members = self.getmembers() - - # Limit the member search list up to tarinfo. -+ skipping = False - if tarinfo is not None: -- members = members[:members.index(tarinfo)] -+ try: -+ index = members.index(tarinfo) -+ except ValueError: -+ # The given starting point might be a (modified) copy. -+ # We'll later skip members until we find an equivalent. -+ skipping = True -+ else: -+ # Happy fast path -+ members = members[:index] - - if normalize: - name = os.path.normpath(name) - - for member in reversed(members): -+ if skipping: -+ if tarinfo.offset == member.offset: -+ skipping = False -+ continue - if normalize: - member_name = os.path.normpath(member.name) - else: -@@ -2413,6 +2671,10 @@ class TarFile(object): - if name == member_name: - return member - -+ if skipping: -+ # Starting point was not found -+ raise ValueError(tarinfo) -+ - def _load(self): - """Read through the entire archive file and look for readable - members. -@@ -2505,6 +2767,7 @@ class TarFile(object): - #-------------------- - # exported functions - #-------------------- -+ - def is_tarfile(name): - """Return True if name points to a tar archive that we - are able to handle, else return False. -@@ -2533,6 +2796,10 @@ def main(): - parser = argparse.ArgumentParser(description=description) - parser.add_argument('-v', '--verbose', action='store_true', default=False, - help='Verbose output') -+ parser.add_argument('--filter', metavar='', -+ choices=_NAMED_FILTERS, -+ help='Filter for extraction') -+ - group = parser.add_mutually_exclusive_group(required=True) - group.add_argument('-l', '--list', metavar='', - help='Show listing of a tarfile') -@@ -2544,8 +2811,12 @@ def main(): - help='Create tarfile from sources') - group.add_argument('-t', '--test', metavar='', - help='Test if a tarfile is valid') -+ - args = parser.parse_args() - -+ if args.filter and args.extract is None: -+ parser.exit(1, '--filter is only valid for extraction\n') -+ - if args.test is not None: - src = args.test - if is_tarfile(src): -@@ -2576,7 +2847,7 @@ def main(): - - if is_tarfile(src): - with TarFile.open(src, 'r:*') as tf: -- tf.extractall(path=curdir) -+ tf.extractall(path=curdir, filter=args.filter) - if args.verbose: - if curdir == '.': - msg = '{!r} file is extracted.'.format(src) ---- a/Lib/test/test_shutil.py -+++ b/Lib/test/test_shutil.py -@@ -32,6 +32,7 @@ except ImportError: - from test import support - from test.support import os_helper - from test.support.os_helper import TESTFN, FakePath -+from test.support import warnings_helper - - TESTFN2 = TESTFN + "2" - TESTFN_SRC = TESTFN + "_SRC" -@@ -1630,12 +1631,14 @@ class TestArchives(BaseTest, unittest.Te - - ### shutil.unpack_archive - -- def check_unpack_archive(self, format): -- self.check_unpack_archive_with_converter(format, lambda path: path) -- self.check_unpack_archive_with_converter(format, pathlib.Path) -- self.check_unpack_archive_with_converter(format, FakePath) -+ def check_unpack_archive(self, format, **kwargs): -+ self.check_unpack_archive_with_converter( -+ format, lambda path: path, **kwargs) -+ self.check_unpack_archive_with_converter( -+ format, pathlib.Path, **kwargs) -+ self.check_unpack_archive_with_converter(format, FakePath, **kwargs) - -- def check_unpack_archive_with_converter(self, format, converter): -+ def check_unpack_archive_with_converter(self, format, converter, **kwargs): - root_dir, base_dir = self._create_files() - expected = rlistdir(root_dir) - expected.remove('outer') -@@ -1645,36 +1648,47 @@ class TestArchives(BaseTest, unittest.Te - - # let's try to unpack it now - tmpdir2 = self.mkdtemp() -- unpack_archive(converter(filename), converter(tmpdir2)) -+ unpack_archive(converter(filename), converter(tmpdir2), **kwargs) - self.assertEqual(rlistdir(tmpdir2), expected) - - # and again, this time with the format specified - tmpdir3 = self.mkdtemp() -- unpack_archive(converter(filename), converter(tmpdir3), format=format) -+ unpack_archive(converter(filename), converter(tmpdir3), format=format, -+ **kwargs) - self.assertEqual(rlistdir(tmpdir3), expected) - -- self.assertRaises(shutil.ReadError, unpack_archive, converter(TESTFN)) -- self.assertRaises(ValueError, unpack_archive, converter(TESTFN), format='xxx') -+ with self.assertRaises(shutil.ReadError): -+ unpack_archive(converter(TESTFN), **kwargs) -+ with self.assertRaises(ValueError): -+ unpack_archive(converter(TESTFN), format='xxx', **kwargs) -+ -+ def check_unpack_tarball(self, format): -+ self.check_unpack_archive(format, filter='fully_trusted') -+ self.check_unpack_archive(format, filter='data') -+ with warnings_helper.check_no_warnings(self): -+ self.check_unpack_archive(format) - - def test_unpack_archive_tar(self): -- self.check_unpack_archive('tar') -+ self.check_unpack_tarball('tar') - - @support.requires_zlib() - def test_unpack_archive_gztar(self): -- self.check_unpack_archive('gztar') -+ self.check_unpack_tarball('gztar') - - @support.requires_bz2() - def test_unpack_archive_bztar(self): -- self.check_unpack_archive('bztar') -+ self.check_unpack_tarball('bztar') - - @support.requires_lzma() - @unittest.skipIf(AIX and not _maxdataOK(), "AIX MAXDATA must be 0x20000000 or larger") - def test_unpack_archive_xztar(self): -- self.check_unpack_archive('xztar') -+ self.check_unpack_tarball('xztar') - - @support.requires_zlib() - def test_unpack_archive_zip(self): - self.check_unpack_archive('zip') -+ with self.assertRaises(TypeError): -+ self.check_unpack_archive('zip', filter='data') - - def test_unpack_registry(self): - ---- a/Lib/test/test_tarfile.py -+++ b/Lib/test/test_tarfile.py -@@ -5,6 +5,10 @@ from hashlib import sha256 - from contextlib import contextmanager - from random import Random - import pathlib -+import shutil -+import re -+import warnings -+import stat - - import unittest - import unittest.mock -@@ -13,6 +17,7 @@ import tarfile - from test import support - from test.support import os_helper - from test.support import script_helper -+from test.support import warnings_helper - - # Check for our compression modules. - try: -@@ -108,7 +113,7 @@ class UstarReadTest(ReadTest, unittest.T - "regular file extraction failed") - - def test_fileobj_readlines(self): -- self.tar.extract("ustar/regtype", TEMPDIR) -+ self.tar.extract("ustar/regtype", TEMPDIR, filter='data') - tarinfo = self.tar.getmember("ustar/regtype") - with open(os.path.join(TEMPDIR, "ustar/regtype"), "r") as fobj1: - lines1 = fobj1.readlines() -@@ -126,7 +131,7 @@ class UstarReadTest(ReadTest, unittest.T - "fileobj.readlines() failed") - - def test_fileobj_iter(self): -- self.tar.extract("ustar/regtype", TEMPDIR) -+ self.tar.extract("ustar/regtype", TEMPDIR, filter='data') - tarinfo = self.tar.getmember("ustar/regtype") - with open(os.path.join(TEMPDIR, "ustar/regtype"), "r") as fobj1: - lines1 = fobj1.readlines() -@@ -136,7 +141,8 @@ class UstarReadTest(ReadTest, unittest.T - "fileobj.__iter__() failed") - - def test_fileobj_seek(self): -- self.tar.extract("ustar/regtype", TEMPDIR) -+ self.tar.extract("ustar/regtype", TEMPDIR, -+ filter='data') - with open(os.path.join(TEMPDIR, "ustar/regtype"), "rb") as fobj: - data = fobj.read() - -@@ -467,7 +473,7 @@ class CommonReadTest(ReadTest): - t = tar.next() - - with self.assertRaisesRegex(tarfile.ReadError, "unexpected end of data"): -- tar.extract(t, TEMPDIR) -+ tar.extract(t, TEMPDIR, filter='data') - - with self.assertRaisesRegex(tarfile.ReadError, "unexpected end of data"): - tar.extractfile(t).read() -@@ -622,16 +628,16 @@ class MiscReadTestBase(CommonReadTest): - 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) -+ tar.extract("ustar/regtype", TEMPDIR, filter='data') - self.addCleanup(os_helper.unlink, os.path.join(TEMPDIR, "ustar/regtype")) - -- tar.extract("ustar/lnktype", TEMPDIR) -+ tar.extract("ustar/lnktype", TEMPDIR, filter='data') - self.addCleanup(os_helper.unlink, os.path.join(TEMPDIR, "ustar/lnktype")) - with open(os.path.join(TEMPDIR, "ustar/lnktype"), "rb") as f: - data = f.read() - self.assertEqual(sha256sum(data), sha256_regtype) - -- tar.extract("ustar/symtype", TEMPDIR) -+ tar.extract("ustar/symtype", TEMPDIR, filter='data') - self.addCleanup(os_helper.unlink, os.path.join(TEMPDIR, "ustar/symtype")) - with open(os.path.join(TEMPDIR, "ustar/symtype"), "rb") as f: - data = f.read() -@@ -646,13 +652,14 @@ class MiscReadTestBase(CommonReadTest): - os.mkdir(DIR) - try: - directories = [t for t in tar if t.isdir()] -- tar.extractall(DIR, directories) -+ tar.extractall(DIR, directories, filter='fully_trusted') - for tarinfo in directories: - path = os.path.join(DIR, tarinfo.name) - if sys.platform != "win32": - # Win32 has no support for fine grained permissions. - self.assertEqual(tarinfo.mode & 0o777, -- os.stat(path).st_mode & 0o777) -+ os.stat(path).st_mode & 0o777, -+ tarinfo.name) - def format_mtime(mtime): - if isinstance(mtime, float): - return "{} ({})".format(mtime, mtime.hex()) -@@ -676,7 +683,7 @@ class MiscReadTestBase(CommonReadTest): - try: - with tarfile.open(tarname, encoding="iso8859-1") as tar: - tarinfo = tar.getmember(dirtype) -- tar.extract(tarinfo, path=DIR) -+ tar.extract(tarinfo, path=DIR, filter='fully_trusted') - extracted = os.path.join(DIR, dirtype) - self.assertEqual(os.path.getmtime(extracted), tarinfo.mtime) - if sys.platform != "win32": -@@ -689,7 +696,7 @@ class MiscReadTestBase(CommonReadTest): - with os_helper.temp_dir(DIR), \ - tarfile.open(tarname, encoding="iso8859-1") as tar: - directories = [t for t in tar if t.isdir()] -- tar.extractall(DIR, directories) -+ tar.extractall(DIR, directories, filter='fully_trusted') - for tarinfo in directories: - path = DIR / tarinfo.name - self.assertEqual(os.path.getmtime(path), tarinfo.mtime) -@@ -700,7 +707,7 @@ class MiscReadTestBase(CommonReadTest): - with os_helper.temp_dir(DIR), \ - tarfile.open(tarname, encoding="iso8859-1") as tar: - tarinfo = tar.getmember(dirtype) -- tar.extract(tarinfo, path=DIR) -+ tar.extract(tarinfo, path=DIR, filter='fully_trusted') - extracted = DIR / dirtype - self.assertEqual(os.path.getmtime(extracted), tarinfo.mtime) - -@@ -1068,7 +1075,7 @@ class GNUReadTest(LongnameTest, ReadTest - # an all platforms, and after that a test that will work only on - # platforms/filesystems that prove to support sparse files. - def _test_sparse_file(self, name): -- self.tar.extract(name, TEMPDIR) -+ self.tar.extract(name, TEMPDIR, filter='data') - filename = os.path.join(TEMPDIR, name) - with open(filename, "rb") as fobj: - data = fobj.read() -@@ -1435,7 +1442,8 @@ class WriteTest(WriteTestBase, unittest. - with tarfile.open(temparchive, errorlevel=2) as tar: - # this should not raise OSError: [Errno 17] File exists - try: -- tar.extractall(path=tempdir) -+ tar.extractall(path=tempdir, -+ filter='fully_trusted') - except OSError: - self.fail("extractall failed with symlinked files") - finally: -@@ -2436,7 +2444,12 @@ class MiscTest(unittest.TestCase): - 'PAX_NUMBER_FIELDS', 'stn', 'nts', 'nti', 'itn', 'calc_chksums', - 'copyfileobj', 'filemode', 'EmptyHeaderError', - 'TruncatedHeaderError', 'EOFHeaderError', 'InvalidHeaderError', -- 'SubsequentHeaderError', 'ExFileObject', 'main'} -+ 'SubsequentHeaderError', 'ExFileObject', 'main', -+ "fully_trusted_filter", "data_filter", -+ "tar_filter", "FilterError", "AbsoluteLinkError", -+ "OutsideDestinationError", "SpecialFileError", "AbsolutePathError", -+ "LinkOutsideDestinationError", -+ } - support.check__all__(self, tarfile, not_exported=not_exported) - - def test_useful_error_message_when_modules_missing(self): -@@ -2471,6 +2484,15 @@ class CommandLineTest(unittest.TestCase) - for tardata in files: - tf.add(tardata, arcname=os.path.basename(tardata)) - -+ def make_evil_tarfile(self, tar_name): -+ files = [support.findfile('tokenize_tests.txt')] -+ self.addCleanup(os_helper.unlink, tar_name) -+ with tarfile.open(tar_name, 'w') as tf: -+ benign = tarfile.TarInfo('benign') -+ tf.addfile(benign, fileobj=io.BytesIO(b'')) -+ evil = tarfile.TarInfo('../evil') -+ tf.addfile(evil, fileobj=io.BytesIO(b'')) -+ - def test_bad_use(self): - rc, out, err = self.tarfilecmd_failure() - self.assertEqual(out, b'') -@@ -2627,6 +2649,25 @@ class CommandLineTest(unittest.TestCase) - finally: - os_helper.rmtree(tarextdir) - -+ def test_extract_command_filter(self): -+ self.make_evil_tarfile(tmpname) -+ # Make an inner directory, so the member named '../evil' -+ # is still extracted into `tarextdir` -+ destdir = os.path.join(tarextdir, 'dest') -+ os.mkdir(tarextdir) -+ try: -+ with os_helper.temp_cwd(destdir): -+ self.tarfilecmd_failure('-e', tmpname, -+ '-v', -+ '--filter', 'data') -+ out = self.tarfilecmd('-e', tmpname, -+ '-v', -+ '--filter', 'fully_trusted', -+ PYTHONIOENCODING='utf-8') -+ self.assertIn(b' file is extracted.', out) -+ finally: -+ os_helper.rmtree(tarextdir) -+ - def test_extract_command_different_directory(self): - self.make_simple_tarfile(tmpname) - try: -@@ -2710,7 +2751,7 @@ class LinkEmulationTest(ReadTest, unitte - # 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) -+ self.tar.extract(name, TEMPDIR, filter='fully_trusted') - with open(os.path.join(TEMPDIR, name), "rb") as f: - data = f.read() - self.assertEqual(sha256sum(data), sha256_regtype) -@@ -2842,8 +2883,10 @@ class NumericOwnerTest(unittest.TestCase - mock_chown): - with self._setup_test(mock_geteuid) as (tarfl, filename_1, _, - filename_2): -- tarfl.extract(filename_1, TEMPDIR, numeric_owner=True) -- tarfl.extract(filename_2 , TEMPDIR, numeric_owner=True) -+ tarfl.extract(filename_1, TEMPDIR, numeric_owner=True, -+ filter='fully_trusted') -+ tarfl.extract(filename_2 , TEMPDIR, numeric_owner=True, -+ filter='fully_trusted') - - # convert to filesystem paths - f_filename_1 = os.path.join(TEMPDIR, filename_1) -@@ -2861,7 +2904,8 @@ class NumericOwnerTest(unittest.TestCase - mock_chown): - with self._setup_test(mock_geteuid) as (tarfl, filename_1, dirname_1, - filename_2): -- tarfl.extractall(TEMPDIR, numeric_owner=True) -+ tarfl.extractall(TEMPDIR, numeric_owner=True, -+ filter='fully_trusted') - - # convert to filesystem paths - f_filename_1 = os.path.join(TEMPDIR, filename_1) -@@ -2886,7 +2930,8 @@ class NumericOwnerTest(unittest.TestCase - def test_extract_without_numeric_owner(self, mock_geteuid, mock_chmod, - mock_chown): - with self._setup_test(mock_geteuid) as (tarfl, filename_1, _, _): -- tarfl.extract(filename_1, TEMPDIR, numeric_owner=False) -+ tarfl.extract(filename_1, TEMPDIR, numeric_owner=False, -+ filter='fully_trusted') - - # convert to filesystem paths - f_filename_1 = os.path.join(TEMPDIR, filename_1) -@@ -2900,6 +2945,905 @@ class NumericOwnerTest(unittest.TestCase - tarfl.extract, filename_1, TEMPDIR, False, True) - - -+class ReplaceTests(ReadTest, unittest.TestCase): -+ def test_replace_name(self): -+ member = self.tar.getmember('ustar/regtype') -+ replaced = member.replace(name='misc/other') -+ self.assertEqual(replaced.name, 'misc/other') -+ self.assertEqual(member.name, 'ustar/regtype') -+ self.assertEqual(self.tar.getmember('ustar/regtype').name, -+ 'ustar/regtype') -+ -+ def test_replace_deep(self): -+ member = self.tar.getmember('pax/regtype1') -+ replaced = member.replace() -+ replaced.pax_headers['gname'] = 'not-bar' -+ self.assertEqual(member.pax_headers['gname'], 'bar') -+ self.assertEqual( -+ self.tar.getmember('pax/regtype1').pax_headers['gname'], 'bar') -+ -+ def test_replace_shallow(self): -+ member = self.tar.getmember('pax/regtype1') -+ replaced = member.replace(deep=False) -+ replaced.pax_headers['gname'] = 'not-bar' -+ self.assertEqual(member.pax_headers['gname'], 'not-bar') -+ self.assertEqual( -+ self.tar.getmember('pax/regtype1').pax_headers['gname'], 'not-bar') -+ -+ def test_replace_all(self): -+ member = self.tar.getmember('ustar/regtype') -+ for attr_name in ('name', 'mtime', 'mode', 'linkname', -+ 'uid', 'gid', 'uname', 'gname'): -+ with self.subTest(attr_name=attr_name): -+ replaced = member.replace(**{attr_name: None}) -+ self.assertEqual(getattr(replaced, attr_name), None) -+ self.assertNotEqual(getattr(member, attr_name), None) -+ -+ def test_replace_internal(self): -+ member = self.tar.getmember('ustar/regtype') -+ with self.assertRaises(TypeError): -+ member.replace(offset=123456789) -+ -+ -+class NoneInfoExtractTests(ReadTest): -+ # These mainly check that all kinds of members are extracted successfully -+ # if some metadata is None. -+ # Some of the methods do additional spot checks. -+ -+ # We also test that the default filters can deal with None. -+ -+ extraction_filter = None -+ -+ @classmethod -+ def setUpClass(cls): -+ tar = tarfile.open(tarname, mode='r', encoding="iso8859-1") -+ cls.control_dir = pathlib.Path(TEMPDIR) / "extractall_ctrl" -+ tar.errorlevel = 0 -+ tar.extractall(cls.control_dir, filter=cls.extraction_filter) -+ tar.close() -+ cls.control_paths = set( -+ p.relative_to(cls.control_dir) -+ for p in pathlib.Path(cls.control_dir).glob('**/*')) -+ -+ @classmethod -+ def tearDownClass(cls): -+ shutil.rmtree(cls.control_dir) -+ -+ def check_files_present(self, directory): -+ got_paths = set( -+ p.relative_to(directory) -+ for p in pathlib.Path(directory).glob('**/*')) -+ self.assertEqual(self.control_paths, got_paths) -+ -+ @contextmanager -+ def extract_with_none(self, *attr_names): -+ DIR = pathlib.Path(TEMPDIR) / "extractall_none" -+ self.tar.errorlevel = 0 -+ for member in self.tar.getmembers(): -+ for attr_name in attr_names: -+ setattr(member, attr_name, None) -+ with os_helper.temp_dir(DIR): -+ self.tar.extractall(DIR, filter='fully_trusted') -+ self.check_files_present(DIR) -+ yield DIR -+ -+ def test_extractall_none_mtime(self): -+ # mtimes of extracted files should be later than 'now' -- the mtime -+ # of a previously created directory. -+ now = pathlib.Path(TEMPDIR).stat().st_mtime -+ with self.extract_with_none('mtime') as DIR: -+ for path in pathlib.Path(DIR).glob('**/*'): -+ with self.subTest(path=path): -+ try: -+ mtime = path.stat().st_mtime -+ except OSError: -+ # Some systems can't stat symlinks, ignore those -+ if not path.is_symlink(): -+ raise -+ else: -+ self.assertGreaterEqual(path.stat().st_mtime, now) -+ -+ def test_extractall_none_mode(self): -+ # modes of directories and regular files should match the mode -+ # of a "normally" created directory or regular file -+ dir_mode = pathlib.Path(TEMPDIR).stat().st_mode -+ regular_file = pathlib.Path(TEMPDIR) / 'regular_file' -+ regular_file.write_text('') -+ regular_file_mode = regular_file.stat().st_mode -+ with self.extract_with_none('mode') as DIR: -+ for path in pathlib.Path(DIR).glob('**/*'): -+ with self.subTest(path=path): -+ if path.is_dir(): -+ self.assertEqual(path.stat().st_mode, dir_mode) -+ elif path.is_file(): -+ self.assertEqual(path.stat().st_mode, -+ regular_file_mode) -+ -+ def test_extractall_none_uid(self): -+ with self.extract_with_none('uid'): -+ pass -+ -+ def test_extractall_none_gid(self): -+ with self.extract_with_none('gid'): -+ pass -+ -+ def test_extractall_none_uname(self): -+ with self.extract_with_none('uname'): -+ pass -+ -+ def test_extractall_none_gname(self): -+ with self.extract_with_none('gname'): -+ pass -+ -+ def test_extractall_none_ownership(self): -+ with self.extract_with_none('uid', 'gid', 'uname', 'gname'): -+ pass -+ -+class NoneInfoExtractTests_Data(NoneInfoExtractTests, unittest.TestCase): -+ extraction_filter = 'data' -+ -+class NoneInfoExtractTests_FullyTrusted(NoneInfoExtractTests, -+ unittest.TestCase): -+ extraction_filter = 'fully_trusted' -+ -+class NoneInfoExtractTests_Tar(NoneInfoExtractTests, unittest.TestCase): -+ extraction_filter = 'tar' -+ -+class NoneInfoExtractTests_Default(NoneInfoExtractTests, -+ unittest.TestCase): -+ extraction_filter = None -+ -+class NoneInfoTests_Misc(unittest.TestCase): -+ def test_add(self): -+ # When addfile() encounters None metadata, it raises a ValueError -+ bio = io.BytesIO() -+ for tarformat in (tarfile.USTAR_FORMAT, tarfile.GNU_FORMAT, -+ tarfile.PAX_FORMAT): -+ with self.subTest(tarformat=tarformat): -+ tar = tarfile.open(fileobj=bio, mode='w', format=tarformat) -+ tarinfo = tar.gettarinfo(tarname) -+ try: -+ tar.addfile(tarinfo) -+ except Exception: -+ if tarformat == tarfile.USTAR_FORMAT: -+ # In the old, limited format, adding might fail for -+ # reasons like the UID being too large -+ pass -+ else: -+ raise -+ else: -+ for attr_name in ('mtime', 'mode', 'uid', 'gid', -+ 'uname', 'gname'): -+ with self.subTest(attr_name=attr_name): -+ replaced = tarinfo.replace(**{attr_name: None}) -+ with self.assertRaisesRegex(ValueError, -+ f"{attr_name}"): -+ tar.addfile(replaced) -+ -+ def test_list(self): -+ # Change some metadata to None, then compare list() output -+ # word-for-word. We want list() to not raise, and to only change -+ # printout for the affected piece of metadata. -+ # (n.b.: some contents of the test archive are hardcoded.) -+ for attr_names in ({'mtime'}, {'mode'}, {'uid'}, {'gid'}, -+ {'uname'}, {'gname'}, -+ {'uid', 'uname'}, {'gid', 'gname'}): -+ with (self.subTest(attr_names=attr_names), -+ tarfile.open(tarname, encoding="iso8859-1") as tar): -+ tio_prev = io.TextIOWrapper(io.BytesIO(), 'ascii', newline='\n') -+ with support.swap_attr(sys, 'stdout', tio_prev): -+ tar.list() -+ for member in tar.getmembers(): -+ for attr_name in attr_names: -+ setattr(member, attr_name, None) -+ tio_new = io.TextIOWrapper(io.BytesIO(), 'ascii', newline='\n') -+ with support.swap_attr(sys, 'stdout', tio_new): -+ tar.list() -+ for expected, got in zip(tio_prev.detach().getvalue().split(), -+ tio_new.detach().getvalue().split()): -+ if attr_names == {'mtime'} and re.match(rb'2003-01-\d\d', expected): -+ self.assertEqual(got, b'????-??-??') -+ elif attr_names == {'mtime'} and re.match(rb'\d\d:\d\d:\d\d', expected): -+ self.assertEqual(got, b'??:??:??') -+ elif attr_names == {'mode'} and re.match( -+ rb'.([r-][w-][x-]){3}', expected): -+ self.assertEqual(got, b'??????????') -+ elif attr_names == {'uname'} and expected.startswith( -+ (b'tarfile/', b'lars/', b'foo/')): -+ exp_user, exp_group = expected.split(b'/') -+ got_user, got_group = got.split(b'/') -+ self.assertEqual(got_group, exp_group) -+ self.assertRegex(got_user, b'[0-9]+') -+ elif attr_names == {'gname'} and expected.endswith( -+ (b'/tarfile', b'/users', b'/bar')): -+ exp_user, exp_group = expected.split(b'/') -+ got_user, got_group = got.split(b'/') -+ self.assertEqual(got_user, exp_user) -+ self.assertRegex(got_group, b'[0-9]+') -+ elif attr_names == {'uid'} and expected.startswith( -+ (b'1000/')): -+ exp_user, exp_group = expected.split(b'/') -+ got_user, got_group = got.split(b'/') -+ self.assertEqual(got_group, exp_group) -+ self.assertEqual(got_user, b'None') -+ elif attr_names == {'gid'} and expected.endswith((b'/100')): -+ exp_user, exp_group = expected.split(b'/') -+ got_user, got_group = got.split(b'/') -+ self.assertEqual(got_user, exp_user) -+ self.assertEqual(got_group, b'None') -+ elif attr_names == {'uid', 'uname'} and expected.startswith( -+ (b'tarfile/', b'lars/', b'foo/', b'1000/')): -+ exp_user, exp_group = expected.split(b'/') -+ got_user, got_group = got.split(b'/') -+ self.assertEqual(got_group, exp_group) -+ self.assertEqual(got_user, b'None') -+ elif attr_names == {'gname', 'gid'} and expected.endswith( -+ (b'/tarfile', b'/users', b'/bar', b'/100')): -+ exp_user, exp_group = expected.split(b'/') -+ got_user, got_group = got.split(b'/') -+ self.assertEqual(got_user, exp_user) -+ self.assertEqual(got_group, b'None') -+ else: -+ # In other cases the output should be the same -+ self.assertEqual(expected, got) -+ -+def _filemode_to_int(mode): -+ """Inverse of `stat.filemode` (for permission bits) -+ -+ Using mode strings rather than numbers makes the later tests more readable. -+ """ -+ str_mode = mode[1:] -+ result = ( -+ {'r': stat.S_IRUSR, '-': 0}[str_mode[0]] -+ | {'w': stat.S_IWUSR, '-': 0}[str_mode[1]] -+ | {'x': stat.S_IXUSR, '-': 0, -+ 's': stat.S_IXUSR | stat.S_ISUID, -+ 'S': stat.S_ISUID}[str_mode[2]] -+ | {'r': stat.S_IRGRP, '-': 0}[str_mode[3]] -+ | {'w': stat.S_IWGRP, '-': 0}[str_mode[4]] -+ | {'x': stat.S_IXGRP, '-': 0, -+ 's': stat.S_IXGRP | stat.S_ISGID, -+ 'S': stat.S_ISGID}[str_mode[5]] -+ | {'r': stat.S_IROTH, '-': 0}[str_mode[6]] -+ | {'w': stat.S_IWOTH, '-': 0}[str_mode[7]] -+ | {'x': stat.S_IXOTH, '-': 0, -+ 't': stat.S_IXOTH | stat.S_ISVTX, -+ 'T': stat.S_ISVTX}[str_mode[8]] -+ ) -+ # check we did this right -+ assert stat.filemode(result)[1:] == mode[1:] -+ -+ return result -+ -+class ArchiveMaker: -+ """Helper to create a tar file with specific contents -+ -+ Usage: -+ -+ with ArchiveMaker() as t: -+ t.add('filename', ...) -+ -+ with t.open() as tar: -+ ... # `tar` is now a TarFile with 'filename' in it! -+ """ -+ def __init__(self): -+ self.bio = io.BytesIO() -+ -+ def __enter__(self): -+ self.tar_w = tarfile.TarFile(mode='w', fileobj=self.bio) -+ return self -+ -+ def __exit__(self, *exc): -+ self.tar_w.close() -+ self.contents = self.bio.getvalue() -+ self.bio = None -+ -+ def add(self, name, *, type=None, symlink_to=None, hardlink_to=None, -+ mode=None, **kwargs): -+ """Add a member to the test archive. Call within `with`.""" -+ name = str(name) -+ tarinfo = tarfile.TarInfo(name).replace(**kwargs) -+ if mode: -+ tarinfo.mode = _filemode_to_int(mode) -+ if symlink_to is not None: -+ type = tarfile.SYMTYPE -+ tarinfo.linkname = str(symlink_to) -+ if hardlink_to is not None: -+ type = tarfile.LNKTYPE -+ tarinfo.linkname = str(hardlink_to) -+ if name.endswith('/') and type is None: -+ type = tarfile.DIRTYPE -+ if type is not None: -+ tarinfo.type = type -+ if tarinfo.isreg(): -+ fileobj = io.BytesIO(bytes(tarinfo.size)) -+ else: -+ fileobj = None -+ self.tar_w.addfile(tarinfo, fileobj) -+ -+ def open(self, **kwargs): -+ """Open the resulting archive as TarFile. Call after `with`.""" -+ bio = io.BytesIO(self.contents) -+ return tarfile.open(fileobj=bio, **kwargs) -+ -+# Under WASI, `os_helper.can_symlink` is False to make -+# `skip_unless_symlink` skip symlink tests. " -+# But in the following tests we use can_symlink to *determine* which -+# behavior is expected. -+# Like other symlink tests, skip these on WASI for now. -+if support.is_wasi: -+ def symlink_test(f): -+ return unittest.skip("WASI: Skip symlink test for now")(f) -+else: -+ def symlink_test(f): -+ return f -+ -+ -+class TestExtractionFilters(unittest.TestCase): -+ -+ # A temporary directory for the extraction results. -+ # All files that "escape" the destination path should still end -+ # up in this directory. -+ outerdir = pathlib.Path(TEMPDIR) / 'outerdir' -+ -+ # The destination for the extraction, within `outerdir` -+ destdir = outerdir / 'dest' -+ -+ @contextmanager -+ def check_context(self, tar, filter): -+ """Extracts `tar` to `self.destdir` and allows checking the result -+ -+ If an error occurs, it must be checked using `expect_exception` -+ -+ Otherwise, all resulting files must be checked using `expect_file`, -+ except the destination directory itself and parent directories of -+ other files. -+ When checking directories, do so before their contents. -+ """ -+ with os_helper.temp_dir(self.outerdir): -+ try: -+ tar.extractall(self.destdir, filter=filter) -+ except Exception as exc: -+ self.raised_exception = exc -+ self.expected_paths = set() -+ else: -+ self.raised_exception = None -+ self.expected_paths = set(self.outerdir.glob('**/*')) -+ self.expected_paths.discard(self.destdir) -+ try: -+ yield -+ finally: -+ tar.close() -+ if self.raised_exception: -+ raise self.raised_exception -+ self.assertEqual(self.expected_paths, set()) -+ -+ def expect_file(self, name, type=None, symlink_to=None, mode=None): -+ """Check a single file. See check_context.""" -+ if self.raised_exception: -+ raise self.raised_exception -+ # use normpath() rather than resolve() so we don't follow symlinks -+ path = pathlib.Path(os.path.normpath(self.destdir / name)) -+ self.assertIn(path, self.expected_paths) -+ self.expected_paths.remove(path) -+ if mode is not None and os_helper.can_chmod(): -+ got = stat.filemode(stat.S_IMODE(path.stat().st_mode)) -+ self.assertEqual(got, mode) -+ if type is None and isinstance(name, str) and name.endswith('/'): -+ type = tarfile.DIRTYPE -+ if symlink_to is not None: -+ got = (self.destdir / name).readlink() -+ expected = pathlib.Path(symlink_to) -+ # The symlink might be the same (textually) as what we expect, -+ # but some systems change the link to an equivalent path, so -+ # we fall back to samefile(). -+ if expected != got: -+ self.assertTrue(got.samefile(expected)) -+ elif type == tarfile.REGTYPE or type is None: -+ self.assertTrue(path.is_file()) -+ elif type == tarfile.DIRTYPE: -+ self.assertTrue(path.is_dir()) -+ elif type == tarfile.FIFOTYPE: -+ self.assertTrue(path.is_fifo()) -+ else: -+ raise NotImplementedError(type) -+ for parent in path.parents: -+ self.expected_paths.discard(parent) -+ -+ def expect_exception(self, exc_type, message_re='.'): -+ with self.assertRaisesRegex(exc_type, message_re): -+ if self.raised_exception is not None: -+ raise self.raised_exception -+ self.raised_exception = None -+ -+ def test_benign_file(self): -+ with ArchiveMaker() as arc: -+ arc.add('benign.txt') -+ for filter in 'fully_trusted', 'tar', 'data': -+ with self.check_context(arc.open(), filter): -+ self.expect_file('benign.txt') -+ -+ def test_absolute(self): -+ # Test handling a member with an absolute path -+ # Inspired by 'absolute1' in https://github.com/jwilk/traversal-archives -+ with ArchiveMaker() as arc: -+ arc.add(self.outerdir / 'escaped.evil') -+ -+ with self.check_context(arc.open(), 'fully_trusted'): -+ self.expect_file('../escaped.evil') -+ -+ for filter in 'tar', 'data': -+ with self.check_context(arc.open(), filter): -+ if str(self.outerdir).startswith('/'): -+ # We strip leading slashes, as e.g. GNU tar does -+ # (without --absolute-filenames). -+ outerdir_stripped = str(self.outerdir).lstrip('/') -+ self.expect_file(f'{outerdir_stripped}/escaped.evil') -+ else: -+ # On this system, absolute paths don't have leading -+ # slashes. -+ # So, there's nothing to strip. We refuse to unpack -+ # to an absolute path, nonetheless. -+ self.expect_exception( -+ tarfile.AbsolutePathError, -+ """['"].*escaped.evil['"] has an absolute path""") -+ -+ @symlink_test -+ def test_parent_symlink(self): -+ # Test interplaying symlinks -+ # Inspired by 'dirsymlink2a' in jwilk/traversal-archives -+ with ArchiveMaker() as arc: -+ arc.add('current', symlink_to='.') -+ arc.add('parent', symlink_to='current/..') -+ arc.add('parent/evil') -+ -+ if os_helper.can_symlink(): -+ with self.check_context(arc.open(), 'fully_trusted'): -+ if self.raised_exception is not None: -+ # Windows will refuse to create a file that's a symlink to itself -+ # (and tarfile doesn't swallow that exception) -+ self.expect_exception(FileExistsError) -+ # The other cases will fail with this error too. -+ # Skip the rest of this test. -+ return -+ else: -+ self.expect_file('current', symlink_to='.') -+ self.expect_file('parent', symlink_to='current/..') -+ self.expect_file('../evil') -+ -+ with self.check_context(arc.open(), 'tar'): -+ self.expect_exception( -+ tarfile.OutsideDestinationError, -+ """'parent/evil' would be extracted to ['"].*evil['"], """ -+ + "which is outside the destination") -+ -+ with self.check_context(arc.open(), 'data'): -+ self.expect_exception( -+ tarfile.LinkOutsideDestinationError, -+ """'parent' would link to ['"].*outerdir['"], """ -+ + "which is outside the destination") -+ -+ else: -+ # No symlink support. The symlinks are ignored. -+ with self.check_context(arc.open(), 'fully_trusted'): -+ self.expect_file('parent/evil') -+ with self.check_context(arc.open(), 'tar'): -+ self.expect_file('parent/evil') -+ with self.check_context(arc.open(), 'data'): -+ self.expect_file('parent/evil') -+ -+ @symlink_test -+ def test_parent_symlink2(self): -+ # Test interplaying symlinks -+ # Inspired by 'dirsymlink2b' in jwilk/traversal-archives -+ with ArchiveMaker() as arc: -+ arc.add('current', symlink_to='.') -+ arc.add('current/parent', symlink_to='..') -+ arc.add('parent/evil') -+ -+ with self.check_context(arc.open(), 'fully_trusted'): -+ if os_helper.can_symlink(): -+ self.expect_file('current', symlink_to='.') -+ self.expect_file('parent', symlink_to='..') -+ self.expect_file('../evil') -+ else: -+ self.expect_file('current/') -+ self.expect_file('parent/evil') -+ -+ with self.check_context(arc.open(), 'tar'): -+ if os_helper.can_symlink(): -+ self.expect_exception( -+ tarfile.OutsideDestinationError, -+ "'parent/evil' would be extracted to " -+ + """['"].*evil['"], which is outside """ -+ + "the destination") -+ else: -+ self.expect_file('current/') -+ self.expect_file('parent/evil') -+ -+ with self.check_context(arc.open(), 'data'): -+ self.expect_exception( -+ tarfile.LinkOutsideDestinationError, -+ """'current/parent' would link to ['"].*['"], """ -+ + "which is outside the destination") -+ -+ @symlink_test -+ def test_absolute_symlink(self): -+ # Test symlink to an absolute path -+ # Inspired by 'dirsymlink' in jwilk/traversal-archives -+ with ArchiveMaker() as arc: -+ arc.add('parent', symlink_to=self.outerdir) -+ arc.add('parent/evil') -+ -+ with self.check_context(arc.open(), 'fully_trusted'): -+ if os_helper.can_symlink(): -+ self.expect_file('parent', symlink_to=self.outerdir) -+ self.expect_file('../evil') -+ else: -+ self.expect_file('parent/evil') -+ -+ with self.check_context(arc.open(), 'tar'): -+ if os_helper.can_symlink(): -+ self.expect_exception( -+ tarfile.OutsideDestinationError, -+ "'parent/evil' would be extracted to " -+ + """['"].*evil['"], which is outside """ -+ + "the destination") -+ else: -+ self.expect_file('parent/evil') -+ -+ with self.check_context(arc.open(), 'data'): -+ self.expect_exception( -+ tarfile.AbsoluteLinkError, -+ "'parent' is a symlink to an absolute path") -+ -+ @symlink_test -+ def test_sly_relative0(self): -+ # Inspired by 'relative0' in jwilk/traversal-archives -+ with ArchiveMaker() as arc: -+ arc.add('../moo', symlink_to='..//tmp/moo') -+ -+ try: -+ with self.check_context(arc.open(), filter='fully_trusted'): -+ if os_helper.can_symlink(): -+ if isinstance(self.raised_exception, FileExistsError): -+ # XXX TarFile happens to fail creating a parent -+ # directory. -+ # This might be a bug, but fixing it would hurt -+ # security. -+ # Note that e.g. GNU `tar` rejects '..' components, -+ # so you could argue this is an invalid archive and we -+ # just raise an bad type of exception. -+ self.expect_exception(FileExistsError) -+ else: -+ self.expect_file('../moo', symlink_to='..//tmp/moo') -+ else: -+ # The symlink can't be extracted and is ignored -+ pass -+ except FileExistsError: -+ pass -+ -+ for filter in 'tar', 'data': -+ with self.check_context(arc.open(), filter): -+ self.expect_exception( -+ tarfile.OutsideDestinationError, -+ "'../moo' would be extracted to " -+ + "'.*moo', which is outside " -+ + "the destination") -+ -+ @symlink_test -+ def test_sly_relative2(self): -+ # Inspired by 'relative2' in jwilk/traversal-archives -+ with ArchiveMaker() as arc: -+ arc.add('tmp/') -+ arc.add('tmp/../../moo', symlink_to='tmp/../..//tmp/moo') -+ -+ with self.check_context(arc.open(), 'fully_trusted'): -+ self.expect_file('tmp', type=tarfile.DIRTYPE) -+ if os_helper.can_symlink(): -+ self.expect_file('../moo', symlink_to='tmp/../../tmp/moo') -+ -+ for filter in 'tar', 'data': -+ with self.check_context(arc.open(), filter): -+ self.expect_exception( -+ tarfile.OutsideDestinationError, -+ "'tmp/../../moo' would be extracted to " -+ + """['"].*moo['"], which is outside the """ -+ + "destination") -+ -+ def test_modes(self): -+ # Test how file modes are extracted -+ # (Note that the modes are ignored on platforms without working chmod) -+ with ArchiveMaker() as arc: -+ arc.add('all_bits', mode='?rwsrwsrwt') -+ arc.add('perm_bits', mode='?rwxrwxrwx') -+ arc.add('exec_group_other', mode='?rw-rwxrwx') -+ arc.add('read_group_only', mode='?---r-----') -+ arc.add('no_bits', mode='?---------') -+ arc.add('dir/', mode='?---rwsrwt') -+ -+ # On some systems, setting the sticky bit is a no-op. -+ # Check if that's the case. -+ tmp_filename = os.path.join(TEMPDIR, "tmp.file") -+ with open(tmp_filename, 'w'): -+ pass -+ os.chmod(tmp_filename, os.stat(tmp_filename).st_mode | stat.S_ISVTX) -+ have_sticky_files = (os.stat(tmp_filename).st_mode & stat.S_ISVTX) -+ os.unlink(tmp_filename) -+ -+ os.mkdir(tmp_filename) -+ os.chmod(tmp_filename, os.stat(tmp_filename).st_mode | stat.S_ISVTX) -+ have_sticky_dirs = (os.stat(tmp_filename).st_mode & stat.S_ISVTX) -+ os.rmdir(tmp_filename) -+ -+ with self.check_context(arc.open(), 'fully_trusted'): -+ if have_sticky_files: -+ self.expect_file('all_bits', mode='?rwsrwsrwt') -+ else: -+ self.expect_file('all_bits', mode='?rwsrwsrwx') -+ self.expect_file('perm_bits', mode='?rwxrwxrwx') -+ self.expect_file('exec_group_other', mode='?rw-rwxrwx') -+ self.expect_file('read_group_only', mode='?---r-----') -+ self.expect_file('no_bits', mode='?---------') -+ if have_sticky_dirs: -+ self.expect_file('dir/', mode='?---rwsrwt') -+ else: -+ self.expect_file('dir/', mode='?---rwsrwx') -+ -+ with self.check_context(arc.open(), 'tar'): -+ self.expect_file('all_bits', mode='?rwxr-xr-x') -+ self.expect_file('perm_bits', mode='?rwxr-xr-x') -+ self.expect_file('exec_group_other', mode='?rw-r-xr-x') -+ self.expect_file('read_group_only', mode='?---r-----') -+ self.expect_file('no_bits', mode='?---------') -+ self.expect_file('dir/', mode='?---r-xr-x') -+ -+ with self.check_context(arc.open(), 'data'): -+ normal_dir_mode = stat.filemode(stat.S_IMODE( -+ self.outerdir.stat().st_mode)) -+ self.expect_file('all_bits', mode='?rwxr-xr-x') -+ self.expect_file('perm_bits', mode='?rwxr-xr-x') -+ self.expect_file('exec_group_other', mode='?rw-r--r--') -+ self.expect_file('read_group_only', mode='?rw-r-----') -+ self.expect_file('no_bits', mode='?rw-------') -+ self.expect_file('dir/', mode=normal_dir_mode) -+ -+ def test_pipe(self): -+ # Test handling of a special file -+ with ArchiveMaker() as arc: -+ arc.add('foo', type=tarfile.FIFOTYPE) -+ -+ for filter in 'fully_trusted', 'tar': -+ with self.check_context(arc.open(), filter): -+ if hasattr(os, 'mkfifo'): -+ self.expect_file('foo', type=tarfile.FIFOTYPE) -+ else: -+ # The pipe can't be extracted and is skipped. -+ pass -+ -+ with self.check_context(arc.open(), 'data'): -+ self.expect_exception( -+ tarfile.SpecialFileError, -+ "'foo' is a special file") -+ -+ def test_special_files(self): -+ # Creating device files is tricky. Instead of attempting that let's -+ # only check the filter result. -+ for special_type in tarfile.FIFOTYPE, tarfile.CHRTYPE, tarfile.BLKTYPE: -+ tarinfo = tarfile.TarInfo('foo') -+ tarinfo.type = special_type -+ trusted = tarfile.fully_trusted_filter(tarinfo, '') -+ self.assertIs(trusted, tarinfo) -+ tar = tarfile.tar_filter(tarinfo, '') -+ self.assertEqual(tar.type, special_type) -+ with self.assertRaises(tarfile.SpecialFileError) as cm: -+ tarfile.data_filter(tarinfo, '') -+ self.assertIsInstance(cm.exception.tarinfo, tarfile.TarInfo) -+ self.assertEqual(cm.exception.tarinfo.name, 'foo') -+ -+ def test_fully_trusted_filter(self): -+ # The 'fully_trusted' filter returns the original TarInfo objects. -+ with tarfile.TarFile.open(tarname) as tar: -+ for tarinfo in tar.getmembers(): -+ filtered = tarfile.fully_trusted_filter(tarinfo, '') -+ self.assertIs(filtered, tarinfo) -+ -+ def test_tar_filter(self): -+ # The 'tar' filter returns TarInfo objects with the same name/type. -+ # (It can also fail for particularly "evil" input, but we don't have -+ # that in the test archive.) -+ with tarfile.TarFile.open(tarname) as tar: -+ for tarinfo in tar.getmembers(): -+ filtered = tarfile.tar_filter(tarinfo, '') -+ self.assertIs(filtered.name, tarinfo.name) -+ self.assertIs(filtered.type, tarinfo.type) -+ -+ def test_data_filter(self): -+ # The 'data' filter either raises, or returns TarInfo with the same -+ # name/type. -+ with tarfile.TarFile.open(tarname) as tar: -+ for tarinfo in tar.getmembers(): -+ try: -+ filtered = tarfile.data_filter(tarinfo, '') -+ except tarfile.FilterError: -+ continue -+ self.assertIs(filtered.name, tarinfo.name) -+ self.assertIs(filtered.type, tarinfo.type) -+ -+ def test_default_filter_warns_not(self): -+ """Ensure the default filter does not warn (like in 3.12)""" -+ with ArchiveMaker() as arc: -+ arc.add('foo') -+ with warnings_helper.check_no_warnings(self): -+ with self.check_context(arc.open(), None): -+ self.expect_file('foo') -+ -+ def test_change_default_filter_on_instance(self): -+ tar = tarfile.TarFile(tarname, 'r') -+ def strict_filter(tarinfo, path): -+ if tarinfo.name == 'ustar/regtype': -+ return tarinfo -+ else: -+ return None -+ tar.extraction_filter = strict_filter -+ with self.check_context(tar, None): -+ self.expect_file('ustar/regtype') -+ -+ def test_change_default_filter_on_class(self): -+ def strict_filter(tarinfo, path): -+ if tarinfo.name == 'ustar/regtype': -+ return tarinfo -+ else: -+ return None -+ tar = tarfile.TarFile(tarname, 'r') -+ with support.swap_attr(tarfile.TarFile, 'extraction_filter', -+ staticmethod(strict_filter)): -+ with self.check_context(tar, None): -+ self.expect_file('ustar/regtype') -+ -+ def test_change_default_filter_on_subclass(self): -+ class TarSubclass(tarfile.TarFile): -+ def extraction_filter(self, tarinfo, path): -+ if tarinfo.name == 'ustar/regtype': -+ return tarinfo -+ else: -+ return None -+ -+ tar = TarSubclass(tarname, 'r') -+ with self.check_context(tar, None): -+ self.expect_file('ustar/regtype') -+ -+ def test_change_default_filter_to_string(self): -+ tar = tarfile.TarFile(tarname, 'r') -+ tar.extraction_filter = 'data' -+ with self.check_context(tar, None): -+ self.expect_exception(TypeError) -+ -+ def test_custom_filter(self): -+ def custom_filter(tarinfo, path): -+ self.assertIs(path, self.destdir) -+ if tarinfo.name == 'move_this': -+ return tarinfo.replace(name='moved') -+ if tarinfo.name == 'ignore_this': -+ return None -+ return tarinfo -+ -+ with ArchiveMaker() as arc: -+ arc.add('move_this') -+ arc.add('ignore_this') -+ arc.add('keep') -+ with self.check_context(arc.open(), custom_filter): -+ self.expect_file('moved') -+ self.expect_file('keep') -+ -+ def test_bad_filter_name(self): -+ with ArchiveMaker() as arc: -+ arc.add('foo') -+ with self.check_context(arc.open(), 'bad filter name'): -+ self.expect_exception(ValueError) -+ -+ def test_stateful_filter(self): -+ # Stateful filters should be possible. -+ # (This doesn't really test tarfile. Rather, it demonstrates -+ # that third parties can implement a stateful filter.) -+ class StatefulFilter: -+ def __enter__(self): -+ self.num_files_processed = 0 -+ return self -+ -+ def __call__(self, tarinfo, path): -+ try: -+ tarinfo = tarfile.data_filter(tarinfo, path) -+ except tarfile.FilterError: -+ return None -+ self.num_files_processed += 1 -+ return tarinfo -+ -+ def __exit__(self, *exc_info): -+ self.done = True -+ -+ with ArchiveMaker() as arc: -+ arc.add('good') -+ arc.add('bad', symlink_to='/') -+ arc.add('good') -+ with StatefulFilter() as custom_filter: -+ with self.check_context(arc.open(), custom_filter): -+ self.expect_file('good') -+ self.assertEqual(custom_filter.num_files_processed, 2) -+ self.assertEqual(custom_filter.done, True) -+ -+ def test_errorlevel(self): -+ def extracterror_filter(tarinfo, path): -+ raise tarfile.ExtractError('failed with ExtractError') -+ def filtererror_filter(tarinfo, path): -+ raise tarfile.FilterError('failed with FilterError') -+ def oserror_filter(tarinfo, path): -+ raise OSError('failed with OSError') -+ def tarerror_filter(tarinfo, path): -+ raise tarfile.TarError('failed with base TarError') -+ def valueerror_filter(tarinfo, path): -+ raise ValueError('failed with ValueError') -+ -+ with ArchiveMaker() as arc: -+ arc.add('file') -+ -+ # If errorlevel is 0, errors affected by errorlevel are ignored -+ -+ with self.check_context(arc.open(errorlevel=0), extracterror_filter): -+ self.expect_file('file') -+ -+ with self.check_context(arc.open(errorlevel=0), filtererror_filter): -+ self.expect_file('file') -+ -+ with self.check_context(arc.open(errorlevel=0), oserror_filter): -+ self.expect_file('file') -+ -+ with self.check_context(arc.open(errorlevel=0), tarerror_filter): -+ self.expect_exception(tarfile.TarError) -+ -+ with self.check_context(arc.open(errorlevel=0), valueerror_filter): -+ self.expect_exception(ValueError) -+ -+ # If 1, all fatal errors are raised -+ -+ with self.check_context(arc.open(errorlevel=1), extracterror_filter): -+ self.expect_file('file') -+ -+ with self.check_context(arc.open(errorlevel=1), filtererror_filter): -+ self.expect_exception(tarfile.FilterError) -+ -+ with self.check_context(arc.open(errorlevel=1), oserror_filter): -+ self.expect_exception(OSError) -+ -+ with self.check_context(arc.open(errorlevel=1), tarerror_filter): -+ self.expect_exception(tarfile.TarError) -+ -+ with self.check_context(arc.open(errorlevel=1), valueerror_filter): -+ self.expect_exception(ValueError) -+ -+ # If 2, all non-fatal errors are raised as well. -+ -+ with self.check_context(arc.open(errorlevel=2), extracterror_filter): -+ self.expect_exception(tarfile.ExtractError) -+ -+ with self.check_context(arc.open(errorlevel=2), filtererror_filter): -+ self.expect_exception(tarfile.FilterError) -+ -+ with self.check_context(arc.open(errorlevel=2), oserror_filter): -+ self.expect_exception(OSError) -+ -+ with self.check_context(arc.open(errorlevel=2), tarerror_filter): -+ self.expect_exception(tarfile.TarError) -+ -+ with self.check_context(arc.open(errorlevel=2), valueerror_filter): -+ self.expect_exception(ValueError) -+ -+ # We only handle ExtractionError, FilterError & OSError specially. -+ -+ with self.check_context(arc.open(errorlevel='boo!'), filtererror_filter): -+ self.expect_exception(TypeError) # errorlevel is not int -+ -+ - def setUpModule(): - os_helper.unlink(TEMPDIR) - os.makedirs(TEMPDIR) ---- /dev/null -+++ b/Misc/NEWS.d/next/Library/2023-03-23-15-24-38.gh-issue-102953.YR4KaK.rst -@@ -0,0 +1,4 @@ -+The extraction methods in :mod:`tarfile`, and :func:`shutil.unpack_archive`, -+have a new a *filter* argument that allows limiting tar features than may be -+surprising or dangerous, such as creating files outside the destination -+directory. See :ref:`tarfile-extraction-filter` for details. diff --git a/Python-3.11.3.tar.xz b/Python-3.11.3.tar.xz deleted file mode 100644 index b1a0cdb..0000000 --- a/Python-3.11.3.tar.xz +++ /dev/null @@ -1,3 +0,0 @@ -version https://git-lfs.github.com/spec/v1 -oid sha256:8a5db99c961a7ecf27c75956189c9602c968751f11dbeae2b900dbff1c085b5e -size 19906156 diff --git a/Python-3.11.3.tar.xz.asc b/Python-3.11.3.tar.xz.asc deleted file mode 100644 index a67d226..0000000 --- a/Python-3.11.3.tar.xz.asc +++ /dev/null @@ -1,16 +0,0 @@ ------BEGIN PGP SIGNATURE----- - -iQIzBAABCAAdFiEEz9yiRbEEPPKl+Xhl/+h0BBaL2EcFAmQsppwACgkQ/+h0BBaL -2Ee3kg//ewFzE4twuLz2MKoki+7xKz5VzTm2fvCtymAtqVq8Tk3oTvRrc9llHIQn -+QU6Cjiu38igRgQ4O0/i6909U3N1tmqXsSHtuGIB5mEOqwK9LESTPJG+wK4nULg5 -fLH+FgBAJ4HSI3WIMt8jn98LJ8lsfFrH1sdv9ijcDN9VdekY8vXOOaWbAWg2vpYb -vXTtajHXA1KLZR1GvhDel3G6qPhxOjud/gwVJgzHcxA/mpDjT5DTiqS5rVMsJQq0 -R/LCtsqM4NVjurWwe5jEOi/Fv60qTN7ekuIdziC3IB50WjkwXltKB90l9heihnZo -oGAe2T9Kv74Pr1kWhkstURwFGP6hRrZHNfvZXYgcJdN2SxsS9VNkt2JQ9aKevPo3 -t1ZgmB5WGsWAWgny7pm+qLfKy5mkdaal/BB7iLTh5/u3b6tlO2C7wNpGRLS1OBrN -kr/SMS0uyVXcZfcjMTs9e/7YU/ArAvu5nwbFqDrFLHe1SHqTq1PXkeVxbxf1c6KW -TZyOivQA7pcbPyqrbm+tuL2qbAjfOtDo771i9AG2vjgsblxTQvBxXc7buv5/JoCl -4jKuDYHuteiVsuJFeC2Gs67hcM0qjEzbB7mFSJLPDZU3gMMGQxMn/ZWrI/laD5hB -biXtLQJt/Z+3f1ROWiFgjZvdaWYjT26BWaBkIMrv65NG//M7wfo= -=SzVA ------END PGP SIGNATURE----- diff --git a/Python-3.11.4.tar.xz b/Python-3.11.4.tar.xz new file mode 100644 index 0000000..74ec0ef --- /dev/null +++ b/Python-3.11.4.tar.xz @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:2f0e409df2ab57aa9fc4cbddfb976af44e4e55bf6f619eee6bc5c2297264a7f6 +size 19954828 diff --git a/Python-3.11.4.tar.xz.asc b/Python-3.11.4.tar.xz.asc new file mode 100644 index 0000000..b95003c --- /dev/null +++ b/Python-3.11.4.tar.xz.asc @@ -0,0 +1,16 @@ +-----BEGIN PGP SIGNATURE----- + +iQIzBAABCAAdFiEEz9yiRbEEPPKl+Xhl/+h0BBaL2EcFAmR/sHIACgkQ/+h0BBaL +2EfQDQ//eFWvcQ5ijhVd3r5lp7NTNUPK6xKR2iqzpNWlN2Z4QkGJ2+IworBaZoGA +tzmbT0j0LB9ZQ+ba3xnqXGXD8Ky+fHLg8GV5yshPlH/bD7tPuHtfDRxNcWplEVSS +MbMuLjAYavTIHhYEz/Rpx4jvZTI5lwplVqj9WxNI/8tNrL5M2bsCtv+IB6brohiw +rUOUlT/KDkZbrGfB1Fe033Ep8hay5MkKjhgr7O1dU7zMuDRG+HRsCYGs7a5x6KhH +3QNTEp+GEIAKEsip5nR7vl5KqL02lHa5sf36SV2wjRTwO+IhgV7lvtJEwOD12oE5 +c+TCQMFbmBXg2vVmNBN/Lwftw1SwT/+orFX6V4U93jq6QNUo4GvPqum6YzuayGYc +/JM4MNziqmfdNW2YjEHPPfzti3f40eTapys97YufOrmYjM2NY0Fs+kAErvyxiWqi +guVQtaZIYeLl/9KWqQ0F/Apy1N+fVDuWBkZlizwHrUsGips4Rp7Bh/iCrDdOj+1D +gRCio7+KvdtzHavZPZnU5dcpUiXZgsDzOTI138IyYaEtVUS59ELkA2qxI1yCb5mk +eLVG1L7r/J2tIaTcguQppp5Z+62UDTArlUbnRxda0buzA2r1aFiQCTMwp+kTRegw +T9Ht/CT/D4vpMdmSQTun9MkKifcK+2uGfSsS7Lz4fSWjQLqg36k= +=zSfJ +-----END PGP SIGNATURE----- diff --git a/python311.changes b/python311.changes index 6f55f78..3acc706 100644 --- a/python311.changes +++ b/python311.changes @@ -1,3 +1,33 @@ +------------------------------------------------------------------- +Wed Jun 28 19:47:28 UTC 2023 - Matej Cepl + +- Update to Python 3.11.4: + - gh-103142: The version of OpenSSL used in Windows and + Mac installers has been upgraded to 1.1.1u to address + CVE-2023-2650, CVE-2023-0465, CVE-2023-0466, CVE-2023-0464, + as well as CVE-2023-0286, CVE-2022-4303, and CVE-2022-4303 + fixed previously in 1.1.1t (gh-101727). + - gh-102153: urllib.parse.urlsplit() now strips leading C0 + control and space characters following the specification for + URLs defined by WHATWG in response to CVE-2023-24329 + (bsc#1208471). + - gh-99889: Fixed a security in flaw in uu.decode() that could + allow for directory traversal based on the input if no + out_file was specified. + - gh-104049: Do not expose the local on-disk + location in directory indexes produced by + http.client.SimpleHTTPRequestHandler. + - gh-103935: trace.__main__ now uses io.open_code() for files + to be executed instead of raw open(). + - gh-102953: The extraction methods in tarfile, and + shutil.unpack_archive(), have a new filter argument that + allows limiting tar features than may be surprising or + dangerous, such as creating files outside the destination + directory. See Extraction filters for details (fixing + CVE-2007-4559, bsc#1203750). +- Remove upstreamed patches: + - CVE-2007-4559-filter-tarfile_extractall.patch + ------------------------------------------------------------------- Mon Jun 26 13:02:05 UTC 2023 - Matej Cepl diff --git a/python311.spec b/python311.spec index 01e3d63..31476d4 100644 --- a/python311.spec +++ b/python311.spec @@ -94,7 +94,7 @@ %define dynlib() %{sitedir}/lib-dynload/%{1}.cpython-%{abi_tag}-%{archname}-%{_os}%{?_gnu}%{?armsuffix}.so %bcond_without profileopt Name: %{python_pkg_name}%{psuffix} -Version: 3.11.3 +Version: 3.11.4 Release: 0 Summary: Python 3 Interpreter License: Python-2.0 @@ -157,9 +157,6 @@ Patch35: fix_configure_rst.patch # PATCH-FIX-UPSTREAM support-expat-CVE-2022-25236-patched.patch jsc#SLE-21253 mcepl@suse.com # Makes Python resilient to changes of API of libexpat Patch36: support-expat-CVE-2022-25236-patched.patch -# PATCH-FIX-UPSTREAM CVE-2007-4559-filter-tarfile_extractall.patch bsc#1203750 mcepl@suse.com -# PEP 706 – Filter for tarfile.extractall -Patch37: CVE-2007-4559-filter-tarfile_extractall.patch # PATCH-FIX-UPSTREAM 103213-fetch-CONFIG_ARGS.patch gh#python/cpython#103053 mcepl@suse.com # Fetch CONFIG_ARGS from original python instance Patch38: 103213-fetch-CONFIG_ARGS.patch @@ -424,7 +421,6 @@ other applications. %endif %patch35 -p1 %patch36 -p1 -%patch37 -p1 %patch38 -p1 %patch39 -p1