TNEF encoding

[azzepis]

Hi.
I'm using Roundcube Webmail 1.6.8 and list of plugins:
filesystem_attachments   1.0
jqueryui   1.13.2   
managesieve   9.4
markasjunk   2.0   
password   5.3

I'm receiving regularly emails from some user, who uses outlook and his messages uses TNEF format.
Message looks like:



if I change here program/lib/Roundcube/rcube_message.php on line 1102 (this line added here https://github.com/roundcube/roundcubemail/commit/22066d8ffcc9b01e12472d652548a2291fd08aad)

Code Select Expand

$tpart->charset         = RCUBE_CHARSET;
to

Code Select Expand

$tpart->charset         = 'windows-1251';
All looks good.

I think RCUBE_CHARSET should be replaced with some function that checks encoding in TNEF attachment and uses it instead of some default constant.
Can you please advice the way I can implement some similar workaround but without  source code changes?