Bug #80259 [Com]: Bad handling of RFC 2047 in case of folding white space

From: Date: Wed, 18 Jan 2023 05:08:11 +0000
Subject: Bug #80259 [Com]: Bad handling of RFC 2047 in case of folding white space
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-243481@lists.php.net to get a copy of this message
Edit report at https://bugs.php.net/bug.php?id=80259&edit=1

 ID:                 80259
 Comment by:         neskemiquel at gmail dot com
 Reported by:        om+bugs dot php dot net at miakinen dot net
 Summary:            Bad handling of RFC 2047 in case of folding white
                     space
 Status:             Verified
 Type:               Bug
 Package:            ICONV related
 Operating System:   Linux
 PHP Version:        7.3
 Block user comment: N
 Private report:     N

 New Comment:

White space is only significant in that indentation of continuation lines is used to indicate a rule
definition that spans more than one line.

<https://www.mypepsico.org/>github.com


Previous Comments:
------------------------------------------------------------------------
[2022-12-26 08:54:03] marlynrasavong at gmail dot com

Have you got solution for this .

(https://www.connectebt.us/)github.com

------------------------------------------------------------------------
[2021-04-14 14:02:07] cmb@php.net

The following pull request has been associated:

Patch Name: Fix #80259: Bad handling of RFC 2047 in case of folding white space
On GitHub:  https://github.com/php/php-src/pull/6865
Patch:      https://github.com/php/php-src/pull/6865.patch

------------------------------------------------------------------------
[2020-10-19 21:57:44] cmb@php.net

Confirmed: <https://3v4l.org/RmjD0>.

------------------------------------------------------------------------
[2020-10-19 21:38:06] om+bugs dot php dot net at miakinen dot net

Description:
------------
---
From manual page: https://php.net/function.iconv-mime-decode
---

When there is a MIME encoded-word followed by a folding-white-space
(CR+LF+SPACE) followed by a simple word (not MIME encoded-word), the
function iconv_mime_decode doesn't add a space in between.

It works OK without the CR+LF.


My exact PHP version:

PHP 7.2.24-0ubuntu0.18.04.7 (cli) (built: Oct  7 2020 15:24:25) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.2.24-0ubuntu0.18.04.7, Copyright (c) 1999-2018, by Zend Technologies


Test script:
---------------
<?php
printf("%s\n", iconv_mime_decode("=?UTF-8?Q?two?= words"));
printf("%s\n", iconv_mime_decode("=?UTF-8?Q?two?=\r\n words"));
?>


Expected result:
----------------
two words
two words


Actual result:
--------------
two words
twowords



------------------------------------------------------------------------



--
Edit this bug report at https://bugs.php.net/bug.php?id=80259&edit=1


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