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example of opening and editing a .tar.gz (change permissions in this case)
import tarfile
import tempfile
import stat
import os
tar_file = "input.tar.gz"
tar = tarfile.open(tar_file, "r:gz")
members = tar.getmembers()
file_permission = stat.S_IRUSR | stat.S_IWUSR
folder_permission = stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR
# Let's pretend we want to edit, and write to new tar
if len(members) > 0:
fd, tmp_tar = tempfile.mkstemp(prefix=("%s.fixed." % tar_file))
os.close(fd)
fixed_tar = tarfile.open(tmp_tar, "w:gz")
# Then process members
for member in members:
# add o+rwx for directories
if member.isdir() and not member.issym():
member.mode = folder_permission | member.mode
extracted = tar.extractfile(member)
fixed_tar.addfile(member, extracted)
# add o+rw for plain files
elif member.isfile() and not member.issym():
member.mode = file_permission | member.mode
extracted = tar.extractfile(member)
fixed_tar.addfile(member, extracted)
else:
fixed_tar.addfile(member)
fixed_tar.close()
tar.close()
# Rename the fixed tar to be the old name
os.rename(tmp_tar, tar_file)
else:
tar.close()
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