Issue 36986: tarfile: unexpected IsADirectoryError on extraction (original) (raw)

The following code creates a new directory 'output' and extracts the tar archive given as argv in it. When a malformed archive (attached) is given as argv, a IsADirectoryError is thrown, as opposed to extracting the file contained in the archive to the 'output' directory.

Code: import tarfile import sys import os

def extract(archive_path, destination_path): if not tarfile.is_tarfile(archive_path): print ('Not a tar file') return tar = tarfile.open(archive_path, 'r') for info in tar.getmembers(): tar.extractall(destination_path, members=[tar.getmember(info.name)])

destination_path = 'output' os.mkdir(destination_path) extract(sys.argv[1], destination_path)

Result: Traceback (most recent call last): File "code.py", line 15, in extract(sys.argv[1], destination_path) File "code.py", line 11, in extract tar.extractall(destination_path, members=[tar.getmember(info.name)]) File "/usr/lib/python3.6/tarfile.py", line 2010, in extractall numeric_owner=numeric_owner) File "/usr/lib/python3.6/tarfile.py", line 2052, in extract numeric_owner=numeric_owner) File "/usr/lib/python3.6/tarfile.py", line 2122, in _extract_member self.makefile(tarinfo, targetpath) File "/usr/lib/python3.6/tarfile.py", line 2163, in makefile with bltn_open(targetpath, "wb") as target: IsADirectoryError: [Errno 21] Is a directory: 'output'