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

go to bug id or search bugs for

Bug #45213 imap_utf7_encode() computes wrong UTF-7 data
Submitted: 2008-06-09 13:17 UTC Modified: 2009-05-04 13:38 UTC
From: thomas dot jarosch at intra2net dot com Assigned:
Status: Closed Package: IMAP related
PHP Version: 5.*, 6CVS (2009-04-27) 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: thomas dot jarosch at intra2net dot com
New email:
PHP Version: OS:

 

 [2008-06-09 13:17 UTC] thomas dot jarosch at intra2net dot com 
Description:
------------
Hello together,

I tried to encode german umlauts using imap_utf7_encode(),
but the computed string is not understood by the cyrus IMAP server.

This is pretty much related to bug #15630, but now I had the
help of a coworker who is pretty fast decoding base64 by hand :-)

UTF-7 is defined to encode special characters as two byte UTF-16 stream.
Normally the ISO-8859-1 string "t?st" should be encoded into t&AOQ-st,
which corresponds to 0x00, 0xe4.

The current code in PHP 5.2.6 encodes it to t&5A-st,
which is 0xe4 without the leading 0x00.

Would be nice if that could be resolved since it's
not compatible with most IMAP implementations.
Bug #15630 is around since 2002.

Cheers,
Thomas


Reproduce code:
---------------
echo imap_utf7_encode("t?st");

Expected result:
----------------
t&AOQ-st

Actual result:
--------------
t&5A-st

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2009-04-27 19:07 UTC] jani@php.net 
Here is short and reliable test:

# sapi/cli/php -r '$tst = mb_convert_encoding("t?st", "ISO-8859-1", 
"UTF8"); echo $tst, "\n"; echo imap_utf7_encode($tst), "\n",  
mb_convert_encoding($tst, "UTF7-IMAP", "ISO-8859-1"), "\n";'
 [2009-04-27 20:31 UTC] pajoye@php.net 
Should we not simply rely on iconv in 5.2/5.3 and ICU in HEAD?
 [2009-04-28 07:53 UTC] thomas dot jarosch at intra2net dot com 
As far as I know, iconv does not support IMAP modified UTF7 out of
the box. Atleast my version 1.9.1 does not and I have a patch for
exactly that. Though we can't rely on people having a patched iconv
version.

The c-client IMAP library has support for UTF8 <-> modified UTF7.
Maybe that would be an option?
 [2009-05-02 18:03 UTC] pajoye@php.net 
I added imap_utf8_to_mutf7 and imap_mutf7_to_utf8 to php 5.3 and 6.0. 5.2 can't accept new features, you can easily backport the two functions from 5.3. However I won't fix the utf7_encode/decode functions as they should actually use the imap API and UTF-8.
 [2009-05-04 13:38 UTC] thomas dot jarosch at intra2net dot com 
Sounds good. Thanks!
 
PHP Copyright © 2001-2025 The PHP Group
All rights reserved. 		Last updated: Mon Oct 27 14:00:01 2025 UTC