Bug #53377 [NEW]: imap_mime_header_decode() doesn't ignore \t during long MIME header unfolding

From: Operating system: Linux PHP version: 5.3.3 Package: IMAP related Bug Type: Bug Bug description:imap_mime_header_decode() doesn't ignore \t during long MIME header unfolding Description: ------------ Function imap_mime_header_decode() doesn't respect \t (HTAB) characters marking continuation of header defined in RFC822 as one of the LWSP chars, however SPACE is still ignored. Source string: {{{ public 'subject' => string '=?utf-8?B?V3VzaHUgaW5mb3JtIC0gU2FjZW5zaWJhcyBJZ2F1bmk=?= =?utf-8?B?amEgKFRhbGxpbmEpLCDRgdC+0YDQtdCy0L3QvtCy0LDQvdC40Y8g0LIg0KLQsNC7?= =?utf-8?B?0LvQuNC90LUgMTEg0LTQtdC60LDQsdGA0Y8=?=' (length=182) }}} where spaces between =?...?= lines are actually tabs, results to {{{ array 0 => object(stdClass)[54] public 'charset' => string 'utf-8' (length=5) public 'text' => string 'Wushu inform - Sacensibas Igauni' (length=32) 1 => object(stdClass)[53] public 'charset' => string 'default' (length=7) public 'text' => string ' ' (length=1) 2 => object(stdClass)[55] public 'charset' => string 'utf-8' (length=5) public 'text' => string 'ja (Tallina), соревнования в Тал' (length=48) 3 => object(stdClass)[56] public 'charset' => string 'default' (length=7) public 'text' => string ' ' (length=1) 4 => object(stdClass)[57] public 'charset' => string 'utf-8' (length=5) public 'text' => string 'лине 11 декабря' (length=26) }}} This produces: {{{ Wushu inform - Sacensibas Igauni ja (Tallina), соревнования в Тал лине 11 декабря }}} with unwanted spaces in words "Igauni ja" and "Тал лине". Test script: --------------- $str = "=?utf-8?B?V3VzaHUgaW5mb3JtIC0gU2FjZW5zaWJhcyBJZ2F1bmk=?=" ."\t=?utf-8?B?amEgKFRhbGxpbmEpLCDRgdC+0YDQtdCy0L3QvtCy0LDQvdC40Y8g0LIg0KLQsNC7?=" ."\t=?utf-8?B?0LvQuNC90LUgMTEg0LTQtdC60LDQsdGA0Y8=?="; var_dump(imap_mime_header_decode($str)); var_dump(imap_mime_header_decode(str_replace("\t", " ", $str))) Expected result: ---------------- array 0 => object(stdClass)[5] public 'charset' => string 'utf-8' (length=5) public 'text' => string 'Wushu inform - Sacensibas Igauni' (length=32) 1 => object(stdClass)[4] public 'charset' => string 'utf-8' (length=5) public 'text' => string 'ja (Tallina), б�аОб�аЕаВаНаОаВаАаНаИб� аВ аЂаАаЛ' (length=48) 2 => object(stdClass)[3] public 'charset' => string 'utf-8' (length=5) public 'text' => string 'аЛаИаНаЕ 11 аДаЕаКаАаБб�б�' (length=26) Actual result: -------------- array 0 => object(stdClass)[1] public 'charset' => string 'utf-8' (length=5) public 'text' => string 'Wushu inform - Sacensibas Igauni' (length=32) 1 => object(stdClass)[2] public 'charset' => string 'default' (length=7) public 'text' => string ' ' (length=1) 2 => object(stdClass)[3] public 'charset' => string 'utf-8' (length=5) public 'text' => string 'ja (Tallina), б�аОб�аЕаВаНаОаВаАаНаИб� аВ аЂаАаЛ' (length=48) 3 => object(stdClass)[4] public 'charset' => string 'default' (length=7) public 'text' => string ' ' (length=1) 4 => object(stdClass)[5] public 'charset' => string 'utf-8' (length=5) public 'text' => string 'аЛаИаНаЕ 11 аДаЕаКаАаБб�б�' (length=26) -- Edit bug report at http://bugs.php.net/bug.php?id=53377&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=53377&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=53377&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=53377&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=53377&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=53377&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=53377&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=53377&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=53377&r=needscript Try newer version: http://bugs.php.net/fix.php?id=53377&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=53377&r=support Expected behavior: http://bugs.php.net/fix.php?id=53377&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=53377&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=53377&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=53377&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53377&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=53377&r=dst IIS Stability: http://bugs.php.net/fix.php?id=53377&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=53377&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=53377&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=53377&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=53377&r=mysqlcfg