#50954 [NEW]: iconv_mime_encode fails in Q-encoding

From: hiroaki dot kawai at gmail dot com Operating system: PHP version: 5.2.12 PHP Bug Type: ICONV related Bug description: iconv_mime_encode fails in Q-encoding 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 -- Edit bug report at http://bugs.php.net/?id=50954&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=50954&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=50954&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=50954&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=50954&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50954&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=50954&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=50954&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=50954&r=needscript Try newer version: http://bugs.php.net/fix.php?id=50954&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=50954&r=support Expected behavior: http://bugs.php.net/fix.php?id=50954&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=50954&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=50954&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=50954&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50954&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=50954&r=dst IIS Stability: http://bugs.php.net/fix.php?id=50954&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=50954&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=50954&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=50954&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=50954&r=mysqlcfg