bug in os.path.join

In ‘utils.py’,

Line 22    curdir = os.path.join(basedir, dir)
Line 42    outfile = open(os.path.join(dest, name), 'wb')

When I unzip a file which has a path in it,

The case fails. “OSError: [Errno 13] Permission denied: '/ram'”
That’s because the method ‘os.path.join’ does not work as we expect.
For example:

>>> basedir = '/home/ute/ta_kiss_files/example/BTS9_1011_CCNTrace'
>>> dir = '/ram'
>>> curdir = os.path.join(basedir, dir)
>>> print curdir
/ram

After I change the utils.py as below,

Line 22    curdir = os.path.join(basedir, dir)
Change to  curdir = basedir + '/' + dir
Line 42    outfile = open(os.path.join(dest, name), 'wb')
Change to  outfile = open(dest + '/' + name, 'wb')

Case passes, because,

>>> curdir = basedir + '/' + dir
>>> print curdir
/home/ute/ta_kiss_files/example/BTS9_1011_CCNTrace///ram
>>>

That is what we expect.

Start in utils.py at the path construction on lines 22 and 42, then reproduce extraction with an archive entry containing an absolute path such as /ram. Check how the destination and archive member names are combined, and verify that the completed behavior extracts into the requested destination without attempting to write to /ram.