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[2010-02-07 14:15 UTC] hiroaki dot kawai at gmail dot com
Description:
------------
iconv_mime_encode fails Q-encoding when encoding non-ascii chars,
which case is very common. This problem does not happen if line-length
is long enough to hold the encoded string in a single line.
The code use unsigned int to capture expected byte. In Q-encoding, the
value is goes to negative value (at iconv.c line 1295), and fails
separating the value into multiple lines.
Patch as following:
===============================
--- iconv.c.orig 2008-12-31 20:17:49.000000000 +0900
+++ iconv.c 2010-02-07 11:01:54.436000000 +0900
@@ -1217,7 +1217,7 @@
prev_in_left = ini_in_left = in_left;
ini_in_p = in_p;
- for (out_size = char_cnt; out_size >
0;) {
+ for (out_size = (char_cnt-2)/3;
out_size > 0;) {
size_t prev_out_left;
nbytes_required = 0;
Reproduce code:
---------------
<?php
ini_set('error_reporting',E_ALL);
echo iconv_mime_encode('a',"\xE3\x83\x86\xE3\x82\xB9\xE3\x83\x88\xE3\x83\x86\xE3\x82\xB9\xE3\x83\x88",array('output-charset'=>'UTF-8','input-charset'=>'UTF-8','scheme'=>'Q','line-length'=>30));
Expected result:
----------------
a: =?UTF-8?Q?=E3=83=86?=
=?UTF-8?Q?=E3=82=B9?=
=?UTF-8?Q?=E3=83=88?=
=?UTF-8?Q?=E3=83=86?=
=?UTF-8?Q?=E3=82=B9?=
=?UTF-8?Q?=E3=83=88?=
Actual result:
--------------
Notice: iconv_mime_encode(): Unknown error (7) in /home/hawk/hoge.php on
line 3
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