cpython/Lib/email
Georges Toth 303aac8c56
bpo-30681: Support invalid date format or value in email Date header (GH-22090)
I am re-submitting an older PR which was abandoned but is still relevant, #10783 by @timb07.

The issue being solved () is still relevant. The original PR #10783 was closed as
the final request changes were not applied and since abandoned.

In this new PR I have re-used the original patch plus applied both comments from the review, by @maxking and @pganssle.


For reference, here is the original PR description:
In email.utils.parsedate_to_datetime(), a failure to parse the date, or invalid date components (such as hour outside 0..23) raises an exception. Document this behaviour, and add tests to test_email/test_utils.py to confirm this behaviour.

In email.headerregistry.DateHeader.parse(), check when parsedate_to_datetime() raises an exception and add a new defect InvalidDateDefect; preserve the invalid value as the string value of the header, but set the datetime attribute to None.

Add tests to test_email/test_headerregistry.py to confirm this behaviour; also added test to test_email/test_inversion.py to confirm emails with such defective date headers round trip successfully.

This pull request incorporates feedback gratefully received from @bitdancer, @brettcannon, @Mariatta and @warsaw, and replaces the earlier PR #2254.

Automerge-Triggered-By: GH:warsaw
2020-10-26 17:31:06 -07:00
..
mime
__init__.py
_encoded_words.py
_header_value_parser.py
_parseaddr.py bpo-30681: Support invalid date format or value in email Date header (GH-22090) 2020-10-26 17:31:06 -07:00
_policybase.py
architecture.rst
base64mime.py
charset.py
contentmanager.py bpo-40597: Allow email.contextmanager set_content() to set a null string. (GH-20542) 2020-07-08 14:00:35 -07:00
encoders.py
errors.py bpo-30681: Support invalid date format or value in email Date header (GH-22090) 2020-10-26 17:31:06 -07:00
feedparser.py
generator.py bpo-27321 Fix email.generator.py to not replace a non-existent header. (GH-18074) 2020-10-19 15:49:19 -07:00
header.py
headerregistry.py bpo-30681: Support invalid date format or value in email Date header (GH-22090) 2020-10-26 17:31:06 -07:00
iterators.py
message.py Typo fix - "mesasge" should be "message" (GH-22498) 2020-10-02 13:21:45 -07:00
parser.py
policy.py
quoprimime.py
utils.py bpo-30681: Support invalid date format or value in email Date header (GH-22090) 2020-10-26 17:31:06 -07:00