view test/test_locking.py @ 5726:e199d0ae4a25

issue2551033: prevent reverse engineering hidden data by using etags as an oracle to identify when the right data has been guessed. Identified by Joseph Myers who also suggested remediation methods. Implemented John Rouillard.
author John Rouillard <rouilj@ieee.org>
date Thu, 23 May 2019 18:56:57 -0400
parents 35ea9b1efc14
children fed0f839c260
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# Copyright (c) 2002 ekit.com Inc (http://www.ekit-inc.com/)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
#   The above copyright notice and this permission notice shall be included in
#   all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import os, unittest, tempfile

from roundup.backends.locking import acquire_lock, release_lock

class LockingTest(unittest.TestCase):
    def setUp(self):
        self.path = tempfile.mktemp()
        open(self.path, 'w').write('hi\n')

    # XXX test disabled because it simply doesn't work on many platforms
    # (Solaris and Irix are known to fail, but Linux works)
    def xtest_basics(self):
        f = acquire_lock(self.path)
        try:
            acquire_lock(self.path, block=0)
        except:
            pass
        else:
            raise AssertionError('no exception')
        release_lock(f)
        f = acquire_lock(self.path)
        release_lock(f)

    def tearDown(self):
        os.remove(self.path)

# vim: set filetype=python ts=4 sw=4 et si

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