#38577 [Fbk->Opn]: ini settings leak between virtual hosts with Apache 1.3

ID: 38577 User updated by: php at diptyque dot net Reported By: php at diptyque dot net -Status: Feedback +Status: Open Bug Type: Apache related Operating System: FreeBSD 4.4 PHP Version: 4.4.4 New Comment: FYI, I do *NOT* have any Zend or Xdebug extension installed... I have downloaded Xdebug only to compare its overriding technique with the one used in Mbstring extension. =begin [diptyque] % php -m [PHP Modules] bz2 ctype curl gd imap mbstring mysql openssl overload pcre posix readline session sqlite standard tokenizer xml zlib [Zend Modules] =end BTW, I compared source files for apache SAPI (./sapi/apache/mod_php4.c) and mbstring extension (./ext/mbstring/mbstring.c) between version 4.4.4 and latest stable version and did not find anything different (!?) Previous Comments: ------------------------------------------------------------------------ [2006-09-07 15:25:39] tony2001@php.net Please remove all zend_extensions, including XDebug and try again. ------------------------------------------------------------------------ [2006-09-07 15:14:49] php at diptyque dot net Antony, I'm not very familiar with Zend Engine 1.3 innards but I had a look at how Xdebug is overriding both var_dump() and set_time_limit() functions in PHP_RINIT_FUNCTION(xdebug) and how it does restore the original function pointers in PHP_RSHUTDOWN_FUNCTION(xdebug). Peeking at mbstring extension source code, this looks a bit more verbose and it doesn't fiddle directly with orig->internal_function.handler (!?) to restore the original function. Instead it calls subsequently zend_hash_update() and zend_hash_del() using the info it gathered inside its mb_overload_def struct... IMHO, mbstring ini settings are properly reset (please see http://bugs.php.net/bug.php?id=25753) but not the initial PHP function table state. ------------------------------------------------------------------------ [2006-09-07 09:29:53] php at diptyque dot net Sorry but it doesn't make it. Mbstring function overloading setting is unfortunately persistent once an Apache process has served content from a vhost where this ini parameter is assigned a value distinct from zero. ------------------------------------------------------------------------ [2006-09-06 16:31:20] tony2001@php.net Fixed, thanks. What about your issue? ------------------------------------------------------------------------ [2006-09-06 16:13:00] php at diptyque dot net Just downloaded the latest stable release, built it and ran the test suite and mb_strlen() test case failed because AFAIK this version of PHP (4.4.5-dev) doesn't emit catchable errors yet (E_RECOVERABLE_ERROR). Anyway I'm going to install it tomorrow morning and will let you know ASAP if it does fix the ini settings leak between virtual hosts. =========================================================== ===================== /usr/local/src/php4-STABLE-200609061230/ext/mbstring/tests/ mb_strlen.phpt =========================================================== ===================== ---- EXPECTED OUTPUT == ASCII == 40 40 == EUC-JP == 43 72 == SJIS == 43 72 == JIS == 43 90 == UTF-8 == 43 101 == WRONG PARAMETERS == ERR: Notice 5 ERR: Catchable fatal error ERR: Notice 6 ERR: Warning ---- ACTUAL OUTPUT == ASCII == 40 40 == EUC-JP == 43 72 == SJIS == 43 72 == JIS == 43 90 == UTF-8 == 43 101 == WRONG PARAMETERS == ERR: Notice 5 ERR: Notice 6 ERR: Warning ---- FAILED =========================================================== ===================== 019- ERR: Catchable fatal error 019+ ERR: Notice 020- ERR: Notice 020+ 6 021- 6 021+ ERR: Warning 022- ERR: Warning =========================================================== ===================== ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/38577 -- Edit this bug report at http://bugs.php.net/?id=38577&edit=1