#35440: Update parse_header_parameters to leverage the parsing logic from
(stdlib)
email Message.
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Reporter: Natalia Bidart | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: HTTP handling | Version: dev
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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Following a security report, which was concluded not to be such, the
Security Team agreed to apply a few improvements to the
`parse_header_parameters` function from `django/utils/http.py`.
This function was historically using Python's (now deprecated) `cgi`
module, but in 34e2148fc725e7200050f74130d7523e3cd8507a the code was
changed by porting the `cgi` implementations into the file to avoid the
deprecation (this was in the context of #33173). Later on the header
parsing logic was cleaned up in d4d5427571b4bf3a21c902276c2a00215c2a37cc
to unify the logic with the one used in the `multipartparser.py` module
(see #33697).
At the time of the `cgi` deprecation, the
[https://peps.python.org/pep-0594/#cgi PEP including the deprecation]
mentions:
> Replacements for the various parts of cgi which are not directly related
to executing code are: [ ... ] parse_header with email.message.Message
(see example below)
Providing an explicit example of how close `parse_header` and
`email.message.Message` are:
{{{#!python
>>> from cgi import parse_header
>>> from email.message import Message
>>> parse_header(h)
('application/json', {'charset': 'utf8'})
>>> m = Message()
>>> m['content-type'] = h
>>> m.get_params()
[('application/json', ''), ('charset', 'utf8')]
>>> m.get_param('charset')
}}}
The goal of this ticket is to track the improvement of the current
`parse_header_parameters` implementation by leveraging the logic from
`email.message.Message`
--
Ticket URL: <https://code.djangoproject.com/ticket/35440>
Django <https://code.djangoproject.com/>
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