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gh-106186: Don't report MultipartInvariantViolationDefect for valid multipart emails when parsing header only #107016

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Merged
merged 5 commits into from
Jul 23, 2023
Merged

gh-106186: Don't report MultipartInvariantViolationDefect for valid multipart emails when parsing header only #107016

merged 5 commits into from
Jul 23, 2023

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htsedebenham
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@htsedebenham htsedebenham commented Jul 22, 2023 •
edited by bedevere-bot
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The following code used to report a MultipartInvariantViolationDefect. However, the message body is not parsed when headersonly=True, so the parsing required for is_multipart() to work is not carried out. Add this as a case to ignore when validating the message body in close()

import email.parser
import email.policy

email_str = '''\
Date: 01 Jan 2001 00:01+0000
From: arthur@example.example
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary=autocracy

--autocracy
Content-Type: text/plain

By hanging on to outdated imperialist dogma which perpetuates the economic and
social differences in our society.

--autocracy
Content-Type: text/html

<html><body><p>By hanging on to outdated imperialist dogma which perpetuates
the economic and social differences in our society.</p></body></html>

--autocracy--
'''

full_parser = email.parser.Parser(policy=email.policy.default)
parsed_email_full = full_parser.parsestr(email_str)
print(parsed_email_full.defects)  # Prints [] as expected

header_parser = email.parser.HeaderParser(policy=email.policy.default)
parsed_email_headers_only = header_parser.parsestr(email_str)
print(parsed_email_headers_only.defects)  # Used to print [MultipartInvariantViolationDefect()].  Now prints []

@htsedebenham htsedebenham requested a review from a team as a code owner July 22, 2023 12:31
@bedevere-bot bedevere-bot mentioned this pull request Jul 22, 2023
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Most changes to Python require a NEWS entry.

Please add it using the blurb_it web app or the blurb command-line tool.

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ghost commented Jul 22, 2023 •
edited by ghost
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All commit authors signed the Contributor License Agreement.
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Most changes to Python require a NEWS entry.

Please add it using the blurb_it web app or the blurb command-line tool.

@ambv ambv added needs backport to 3.11 only security fixes needs backport to 3.12 only security fixes labels Jul 23, 2023
@ambv ambv merged commit c65592c into python:main Jul 23, 2023
@miss-islington
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Thanks @htsedebenham for the PR, and @ambv for merging it 🌮🎉.. I'm working now to backport this PR to: 3.11, 3.12.
🐍🍒⛏🤖

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GH-107111 is a backport of this pull request to the 3.12 branch.

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Jul 23, 2023
@htsedebenham @miss-islington
pythongh-106186: Don't report MultipartInvariantViolationDefect for v…
191b954 
…alid multipart emails when parsing header only (pythonGH-107016)

(cherry picked from commit c65592c)

Co-authored-by: htsedebenham <31847376+htsedebenham@users.noreply.github.com>
@bedevere-bot bedevere-bot removed the needs backport to 3.12 only security fixes label Jul 23, 2023
@bedevere-bot
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GH-107112 is a backport of this pull request to the 3.11 branch.

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Jul 23, 2023
@htsedebenham @miss-islington
pythongh-106186: Don't report MultipartInvariantViolationDefect for v…
fe4addd 
…alid multipart emails when parsing header only (pythonGH-107016)

(cherry picked from commit c65592c)

Co-authored-by: htsedebenham <31847376+htsedebenham@users.noreply.github.com>
@bedevere-bot bedevere-bot removed the needs backport to 3.11 only security fixes label Jul 23, 2023
ambv pushed a commit that referenced this pull request Jul 23, 2023
@miss-islington @htsedebenham
[3.12] gh-106186: Don't report MultipartInvariantViolationDefect for …
af95a1d 
…valid multipart emails when parsing header only (GH-107016) (#107111)

(cherry picked from commit c65592c)

Co-authored-by: htsedebenham <31847376+htsedebenham@users.noreply.github.com>
ambv pushed a commit that referenced this pull request Jul 23, 2023
@miss-islington @htsedebenham
[3.11] gh-106186: Don't report MultipartInvariantViolationDefect for …
afa24d5 
…valid multipart emails when parsing header only (GH-107016) (#107112)

(cherry picked from commit c65592c)

Co-authored-by: htsedebenham <31847376+htsedebenham@users.noreply.github.com>
jtcave pushed a commit to jtcave/cpython that referenced this pull request Jul 23, 2023
@htsedebenham @jtcave
pythongh-106186: Don't report MultipartInvariantViolationDefect for v…
86ce86b 
…alid multipart emails when parsing header only (python#107016)
mementum pushed a commit to mementum/cpython that referenced this pull request Jul 23, 2023
@htsedebenham @mementum
pythongh-106186: Don't report MultipartInvariantViolationDefect for v…
06607bc 
…alid multipart emails when parsing header only (python#107016)
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4 participants
@htsedebenham @bedevere-bot @miss-islington @ambv