bpo-35805: Add parser for Message-ID email header. (GH-13397)

* bpo-35805: Add parser for Message-ID header.

This parser is based on the definition of Identification Fields from RFC 5322
Sec 3.6.4.

This should also prevent folding of Message-ID header using RFC 2047 encoded
words and hence fix bpo-35805.

* Prevent folding of non-ascii message-id headers.
* Add fold method to MsgID token to prevent folding.
This commit is contained in:
Abhilash Raj 2019-06-04 13:41:34 -04:00 committed by Barry Warsaw
parent bc6469f79c
commit 46d88a1131
6 changed files with 257 additions and 28 deletions

View file

@ -0,0 +1,2 @@
Add parser for Message-ID header and add it to default HeaderRegistry. This
should prevent folding of Message-ID using RFC 2048 encoded words.