md5 is not an approved algorithm in FIPS mode, and trying to instantiate
a hashlib.md5() will fail when the system is running in FIPS mode.
md5 is allowed when in a non-security context. There is a plan to add a
keyword parameter (usedforsecurity) to hashlib.md5() to annotate whether
or not the instance is being used in a security context.
In the case where it is not, the instantiation of md5 will be allowed.
See https://bugs.python.org/issue9216 for more details.
Some downstream python versions already support this parameter. To
support these versions, a new encapsulation of md5() has been added.
This encapsulation will pass through the usedforsecurity parameter in
the case where the parameter is supported, and strip it if it is not.
Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>
Thanks Carlton Gibson, Chris Jerdonek, David Smith, Keryn Knight,
Mariusz Felisiak, and Nick Pope for reviews and mentoring this
Google Summer of Code 2021 project.
The validate_key() function should be called after make_key() to ensure
that the validation is performed on the key that will actually be
stored in the cache.
Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>
By using a asgiref's ThreadSensitiveContext context manager, requests
will be able to execute independently of other requests when sync work
is involved.
Prior to this commit, a single global thread was used to execute any
sync work independent of the request from which that work was scheduled.
This could result in contention for the global sync thread in the case
of a slow sync function.
Requests are now isolated to their own sync thread.
By default, this means that readline is properly registered, so that
.python_history is used.
sys.__interactivehook__ may be set by a $PYTHONSTARTUP file.
validate_ipv4_address() was affected only on Python < 3.9.5, see [1].
URLValidator() uses a regular expressions and it was affected on all
Python versions.
[1] https://bugs.python.org/issue36384
Moved deeply nested blocks out of inner loops to improve readability
and maintainability.
Thanks to Mariusz Felisiak, Shreyas Ravi, and Paolo Melchiorre for
feedback.
This always replaces 'fixture_name' with its base name, which preserves
the previous behavior, because os.path.basename() was not called only on
relative paths without os.path.sep i.e. when base name was equal to the
file name.
This also changes os.path.dirname() and os.path.basename() calls to the
equivalent os.path.split() call.
This moves code unable to trigger relevant exceptions outside of
try/except blocks, and changes 'objects' to 'objects_in_fixture'
which is equal to the length of 'objects'.