From: slangley at google dot com
Operating system: N/A
PHP version: 5.3.15
Package: MySQL related
Bug Type: Bug
Bug description:mysqlnd mysqlnd_conn_methods table is mot restored correctly
with mutliple init
Description:
------------
If a plugin alters the connection methods table, then the original
connection
table is not restored if there is a php_module_shutdown()/php_module_init()
cycle
in the same process.
This is because mysqlnd_conn_methods is a pointer to
MYSQLND_CLASS_METHOD_TABLE_NAME(mysqlnd_conn),
sizeof(mysqlnd_conn_methods)) so
changing the values in mysqlnd_conn_methods actually changes the values in
the
master table.
To fix, mysqlnd_conn_methods should take a copy of the table on init.
Test script:
---------------
Create a plugin that replaces the conenct function with a function that
simply flows the call to the original callback.
static enum_func_status
MYSQLND_METHOD(my_test_plugin, query)(MYSQLND* conn,
const char* query, unsigned int query_len TSRMLS_DC) {
return original_conn_methods.query(conn, query, query_len);
}
Register this plugin during MINIT
struct st_mysqlnd_conn_methods* current_conn_methods =
mysqlnd_conn_get_methods();
memcpy(&original_conn_methods,
current_conn_methods,
sizeof(st_mysqlnd_conn_methods));
current_conn_methods->connect = MYSQLND_METHOD(speckle_mysqlnd_conn,
connect);
Start/Stop/Start the php modules
php_module_startup(...)
php_module_shutdown(...)
php_module_startup(...)
Try and connect to the mysqldb - you'll get a stack overflow.
--
Edit bug report at https://bugs.php.net/bug.php?id=62730&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=62730&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=62730&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=62730&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=62730&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=62730&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=62730&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=62730&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=62730&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=62730&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=62730&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=62730&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=62730&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=62730&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=62730&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=62730&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=62730&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=62730&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=62730&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=62730&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=62730&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=62730&r=mysqlcfg
