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https://github.com/python/cpython
Revision 5f977e09e8a29dbd5972ad79c4fd17a394d1857f authored by Miss Islington (bot) on 29 May 2020, 11:43:47 UTC, committed by GitHub on 29 May 2020, 11:43:47 UTC

* bpo-39040: Fix parsing of email headers with encoded-words inside a quoted string.

It is fairly common to find malformed mime headers (especially content-disposition
headers) where the parameter values, instead of being encoded to RFC
standards, are "encoded" by doing RFC 2047 "encoded word" encoding, and
then enclosing the whole thing in quotes.  The processing of these malformed
headers was incorrectly leaving the spaces between encoded words in the decoded
text (whitespace between adjacent encoded words is supposed to be stripped on
decoding).  This changeset fixes the encoded word processing inside quoted strings
(bare-quoted-string) to do correct RFC 2047 decoding by stripping that
whitespace.
(cherry picked from commit 21017ed904f734be9f195ae1274eb81426a9e776)

Co-authored-by: Abhilash Raj <maxking@users.noreply.github.com>
1 parent f5bd99b
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Tip revision: 5f977e09e8a29dbd5972ad79c4fd17a394d1857f authored by Miss Islington (bot) on 29 May 2020, 11:43:47 UTC
bpo-39040: Fix parsing of email mime headers with whitespace between encoded-words. (gh-17620)
Tip revision: 5f977e0
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    </ItemGroup>
  </Target>
  <Target Name="_WarnAboutToolset" BeforeTargets="PrepareForBuild" Condition="$(PlatformToolset) != 'v140' and $(PlatformToolset) != 'v141'">
    <Warning Text="Toolset $(PlatformToolset) is not used for official builds. Your build may have errors or incompatibilities." />
  </Target>
  <Target Name="_WarnAboutZlib" BeforeTargets="PrepareForBuild" Condition="!$(IncludeExternals)">
    <Warning Text="Not including zlib is not a supported configuration." />
  </Target>

  <Target Name="_CopyVCRuntime" AfterTargets="Build" Inputs="@(VCRuntimeDLL)" Outputs="$(OutDir)%(Filename)%(Extension)" DependsOnTargets="FindVCRuntime">
    <!-- bpo-38597: When we switch to another VCRuntime DLL, include vcruntime140.dll as well -->
    <Warning Text="A copy of vcruntime140.dll is also required" Condition="!$(VCToolsRedistVersion.StartsWith(`14.`))" />
    <Copy SourceFiles="%(VCRuntimeDLL.FullPath)" DestinationFolder="$(OutDir)" />
  </Target>
  <Target Name="_CleanVCRuntime" AfterTargets="Clean">
    <Delete Files="@(VCRuntimeDLL->'$(OutDir)%(Filename)%(Extension)')" />
  </Target>
</Project>
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