php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #48289 iconv_mime_encode() quoted-printable scheme is broken
Submitted: 2009-05-15 03:29 UTC Modified: 2010-05-04 13:57 UTC
Votes:2
Avg. Score:4.0 ± 0.0
Reproduced:2 of 2 (100.0%)
Same Version:1 (50.0%)
Same OS:1 (50.0%)
From: astax dot t at gmail dot com Assigned: aharvey (profile)
Status: Closed Package: ICONV related
PHP Version: 5.*, 6 OS: *
Private report: No CVE-ID: None
View Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: astax dot t at gmail dot com
New email:
PHP Version: OS:

 

 [2009-05-15 03:29 UTC] astax dot t at gmail dot com 
Description:
------------
When used with "Q" scheme, iconv_mime_encode produces wrong results, crashes of hangs. I suspect this happens with long (though not VERY long) strings.

Lines are not correctly wrapped with "line-break-chars" parameter.


In reproduce code note missing linebreaks in encoded string and duplicated second word in decoded string.

Reproduce code:
---------------
// Content below is in Windows-1251 charset
$str = '?????? "???????-?????????" ??? "?????????" ??? ???????????';

$par = array(
	'scheme' => 'Q',
	'input-charset' => 'CP1251',
	'output-charset' => 'CP1251',
	'line-length' => 74,
);

$res = iconv_mime_encode('Subject', $str, $par);
echo $res."\n";
$res = iconv_mime_decode($res, ICONV_MIME_DECODE_CONTINUE_ON_ERROR, 'CP1251');
echo $res."\n";



=================================================================
Second example:

$str = '???? ???? ???? ???? ???? ???? ???? ???? ???? ???? ???? ???? ???? ???? ????';

$par = array(
	'scheme' => 'Q',
	'input-charset' => 'CP1251',
	'output-charset' => 'CP1251',
);

$res = iconv_mime_encode('Subject', $str, $par);
echo $res."\n";


Expected result:
----------------
Subject: =?CP1251?Q?=D4=E8=EB=E8?==?CP1251?Q?=E0=EB=20?==?CP1251?Q?"?=           =?CP1251?Q?=C7=E0=EF=E0=E4=ED=EE-=D1=E8=E1=E8=F0=F1=EA=E8=E9"=20=CE=C0=CE?=     =?CP1251?Q?=20"=D1=EE=E1=E8=ED=E1=E0=ED=EA"=20=F0=E0=E4=20=EF=F0?=              =?CP1251?Q?=E5=E4=F1=F2=E0=E2=E8=F2=FC?=                                       Subject: ?????? "???????-?????????" ??? "?????????" ??? ???????????


=================================================================
Second example:

expected encoded string to be displayed

Actual result:
--------------
Subject: =?CP1251?Q?=D4=E8=EB=E8?==?CP1251?Q?=E0=EB=20?==?CP1251?Q?"=C7=E0=EF=E0=E4=ED?==?CP1251?Q?"=C7=E0=EF=E0=E4=ED=EE-=D1=E8=E1=E8=F0=F1=EA=E8=E9"=20=CE=C0=CE=20"=D1=EE=E1=E8=ED=E1=E0=ED=EA"=20=F0=E0=E4=20=EF=F0=E5=E4=F1=F2=E0=E2=E8=F2=FC?=
Subject: ?????? "??????"???????-?????????" ??? "?????????" ??? ???????????


=================================================================
Second example:

PHP hangs

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2009-05-16 17:45 UTC] dypa at bk dot ru 
all tests give error:
Notice: iconv_mime_encode() [function.iconv-mime-encode]: Unknown error (7) in /var/www/def.php on line 12

user@localhost:/rss$ php -v
PHP 5.2.6-3ubuntu4.1 with Suhosin-Patch 0.9.6.2 (cli) (built: Apr 23 2009 14:35:05) 
Copyright (c) 1997-2008 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies

iconv
iconv support 	enabled 
iconv implementation 	glibc 
iconv library version 	2.9
 [2009-07-10 03:02 UTC] astax dot t at gmail dot com 
dypa at bk dot ru: Please make sure you use Windows-1251 charset everywhere when you copy and paste test content. Everywhere means in browser and in text editor.
In your case I think iconv fails because you pasted the text in ISO-8859-1 charset.
 [2009-10-13 08:22 UTC] rosier at interstroom dot nl 
// PHP version: 5.3.0
echo 'PHP version: ' . phpversion();

$subject = base64_decode('VEVTVCDigJMg0KMg0L3QsNGBINC10YHRgtGMINGC0L4sINGH0YLQviDQktCw0Lwg0L3Rg9C20L3QviAtIFRFU1Q=');

$preferences = array(
    'line-length' => 500,
    'input-charset' => 'UTF-8',
    'output-charset' => 'UTF-8',
    'scheme' => 'Q'
);
$result = iconv_mime_encode('Subject', $subject, $preferences);
// OK: $result = string
var_dump($result);

$preferences = array(
    'line-length' => 76,
    'input-charset' => 'UTF-8',
    'output-charset' => 'UTF-8',
    'scheme' => 'Q'
);
$result = iconv_mime_encode('Subject', $subject, $preferences);
// WRONG: $result = FALSE
var_dump($result);
 [2010-02-07 17:38 UTC] jani@php.net 
See also bug #50954 (has a patch too)
 [2010-02-08 03:55 UTC] astax dot t at gmail dot com 
I'd like to test the patch described in #50954. Is it included into any PHP build already? Sorry, I don't feel like compiling PHP from sources.


Here is one more reproduce code:

$str = base64_decode("1Ojr6ODrICLH4O/g5O3uLdHo4ejw8ero6SIgzsDOICLR7uHo7eHg7eoiIPDg5CDv8OXk8fLg4ujy/A==");

$par = array(
	'scheme' => 'Q',
	'input-charset' => 'CP1251',
	'output-charset' => 'CP1251',
	'line-length' => 74,
);

$res = iconv_mime_encode('Subject', $str, $par);

$res = iconv_mime_decode($res, ICONV_MIME_DECODE_CONTINUE_ON_ERROR, 'CP1251');
echo 'Result: Length='.strlen($res)."  ".$res."\n";
$expected = "Subject: ".$str;
echo 'Expected: Length='.strlen($expected)."  ".$expected."\n";



It says result length is 74 chars and expected is 67.
 [2010-05-04 13:52 UTC] aharvey@php.net
-Status: Open +Status: Assigned -Assigned To: +Assigned To: aharvey
 [2010-05-04 13:57 UTC] aharvey@php.net 
Automatic comment from SVN on behalf of aharvey
Revision: http://svn.php.net/viewvc/?view=revision&revision=298963
Log: Fix for bug #48289 (iconv_mime_encode() quoted-printable scheme is broken).
Thanks to Hiroaki Kawai for the original patch.
 [2010-05-04 13:57 UTC] aharvey@php.net
-Status: Assigned +Status: Closed
 [2010-05-04 13:57 UTC] aharvey@php.net 
This bug has been fixed in SVN.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.
 [2012-06-14 07:19 UTC] jinhuakehao at hotmail dot com 
this is great help to design new bug to any backdoors, thanks so much, it's Love 
from http://www.favordeal.com
 [2012-09-04 06:05 UTC] sunfeng891031 at gmail dot com 
thanks!it's useful for me !
i used them in my website:
http://www.dualshine.com
 
PHP Copyright © 2001-2025 The PHP Group
All rights reserved. 		Last updated: Sat Apr 12 23:01:29 2025 UTC