tarfile writes full path to FNAME field of GZIP format instead of just basename if user specified absolute path. Some archive viewers may process file incorrectly. Also it creates security issue because anyone can know structure of directories on system and know username or other personal information.

RFC1952 says about FNAME:
This is the original name of the file being compressed, with any directory components removed.

So tarfile must remove directory names from FNAME and write only basename of file.

Automerge-Triggered-By: @jaraco
(cherry picked from commit 22748a8)

Co-authored-by: Artem Bulgakov <ArtemSBulgakov@ya.ru>

* origin/master: (1373 commits)
  bpo-1635741: Port mashal module to multi-phase init (python#22149)
  bpo-1635741: Port _string module to multi-phase init (pythonGH-22148)
  bpo-1635741: Convert _sha256 types to heap types (pythonGH-22134)
  bpo-1635741: Port the termios to multi-phase init (PEP 489) (pythonGH-22139)
  bpo-41732: add iterator to memoryview (pythonGH-22119)
  bpo-40744: Drop support for SQLite pre 3.7.3 (pythonGH-20909)
  bpo-41316: Make tarfile follow specs for FNAME (pythonGH-21511)
  bpo-41720: Add "return NotImplemented" in turtle.Vec2D.__rmul__(). (pythonGH-22092)
  bpo-1635741 port _curses_panel to multi-phase init (PEP 489) (pythonGH-21986)
  bpo-1635741: Port _overlapped module to multi-phase init (pythonGH-22051)
  bpo-1635741: Port _opcode module to multi-phase init (PEP 489) (pythonGH-22050)
  bpo-1635741 port zlib module to multi-phase init (pythonGH-21995)
  [doc] Add link to Generic in typing (pythonGH-22125)
  bpo-41513: Expand comments and add references for a better understanding (pythonGH-22123)
  bpo-1635741: Port _sha1, _sha512, _md5 to multiphase init (pythonGH-21818)
  closes bpo-41723: Fix an error in the py_compile documentation. (pythonGH-22110)
  [doc] Fix padding in some typing definitions (pythonGH-22114)
  Fix documented Python version for venv --upgrade-deps (pythonGH-22113)
  bpo-40318: Migrate to SQLite3 trace v2 API (pythonGH-19581)
  bpo-41687: Fix sendfile implementation to work with Solaris (python#22040)
  ...

tarfile writes full path to FNAME field of GZIP format instead of just basename if user specified absolute path. Some archive viewers may process file incorrectly. Also it creates security issue because anyone can know structure of directories on system and know username or other personal information.

RFC1952 says about FNAME:
This is the original name of the file being compressed, with any directory components removed.

So tarfile must remove directory names from FNAME and write only basename of file.

Automerge-Triggered-By: @jaraco

tarfile writes full path to FNAME field of GZIP format instead of just basename if user specified absolute path. Some archive viewers may process file incorrectly. Also it creates security issue because anyone can know structure of directories on system and know username or other personal information.

RFC1952 says about FNAME:
This is the original name of the file being compressed, with any directory components removed.

So tarfile must remove directory names from FNAME and write only basename of file.

Automerge-Triggered-By: @jaraco
(cherry picked from commit 22748a8)

Co-authored-by: Artem Bulgakov <ArtemSBulgakov@ya.ru>

tarfile writes full path to FNAME field of GZIP format instead of just basename if user specified absolute path. Some archive viewers may process file incorrectly. Also it creates security issue because anyone can know structure of directories on system and know username or other personal information.

RFC1952 says about FNAME:
This is the original name of the file being compressed, with any directory components removed.

So tarfile must remove directory names from FNAME and write only basename of file.

Automerge-Triggered-By: @jaraco
(cherry picked from commit 22748a8)

Co-authored-by: Artem Bulgakov <ArtemSBulgakov@ya.ru>