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Miss Islington (bot) 4aaa4259b5
[3.13] gh-121650: Encode newlines in headers, and verify headers are sound (GH-122233) (#122484) 
gh-121650: Encode newlines in headers, and verify headers are sound (GH-122233)

GH-GH- Encode header parts that contain newlines

Per RFC 2047:

> [...] these encoding schemes allow the
> encoding of arbitrary octet values, mail readers that implement this
> decoding should also ensure that display of the decoded data on the
> recipient's terminal will not cause unwanted side-effects

It seems that the "quoted-word" scheme is a valid way to include
a newline character in a header value, just like we already allow
undecodable bytes or control characters.
They do need to be properly quoted when serialized to text, though.

GH-GH- Verify that email headers are well-formed

This should fail for custom fold() implementations that aren't careful
about newlines.

(cherry picked from commit 0976339818)

Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Bas Bloemsaat <bas@bloemsaat.org>
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
 		2024-08-06 19:06:41 +02:00
..
mime gh-102542 Remove unused bytes object and bytes slicing (#106433) 2023-07-05 09:17:37 -07:00
__init__.py gh-102507 Remove invisible pagebreak characters (#102531) 2023-03-08 13:58:14 +00:00
_encoded_words.py
…
_header_value_parser.py [3.13] gh-121650: Encode newlines in headers, and verify headers are sound (GH-122233) (#122484) 2024-08-06 19:06:41 +02:00
_parseaddr.py gh-109653: Improve import time of importlib.metadata / email.utils (#114664) 2024-01-29 01:30:22 -08:00
_policybase.py [3.13] gh-121650: Encode newlines in headers, and verify headers are sound (GH-122233) (#122484) 2024-08-06 19:06:41 +02:00
architecture.rst
…
base64mime.py gh-102507 Remove invisible pagebreak characters (#102531) 2023-03-08 13:58:14 +00:00
charset.py gh-102498 Clean up unused variables and imports in the email module (#102482) 2023-04-24 19:19:28 +00:00
contentmanager.py
…
encoders.py gh-102507 Remove invisible pagebreak characters (#102531) 2023-03-08 13:58:14 +00:00
errors.py [3.13] gh-121650: Encode newlines in headers, and verify headers are sound (GH-122233) (#122484) 2024-08-06 19:06:41 +02:00
feedparser.py gh-106186: Don't report MultipartInvariantViolationDefect for valid multipart emails when parsing header only (#107016) 2023-07-23 12:25:18 +02:00
generator.py [3.13] gh-121650: Encode newlines in headers, and verify headers are sound (GH-122233) (#122484) 2024-08-06 19:06:41 +02:00
header.py gh-102507 Remove invisible pagebreak characters (#102531) 2023-03-08 13:58:14 +00:00
headerregistry.py
…
iterators.py gh-102507 Remove invisible pagebreak characters (#102531) 2023-03-08 13:58:14 +00:00
message.py gh-80361: Fix TypeError in email.Message.get_payload() (GH-117994) 2024-04-17 19:31:26 +03:00
parser.py gh-102507 Remove invisible pagebreak characters (#102531) 2023-03-08 13:58:14 +00:00
policy.py gh-117313: Fix re-folding email messages containing non-standard line separators (GH-117369) 2024-04-17 13:00:25 +03:00
quoprimime.py
…
utils.py [3.13] gh-121905: Consistently use "floating-point" instead of "floating point" (GH-121907) (GH-122012) 2024-07-19 09:13:08 +00:00