Hello,
I need to simulate "enable_functions" configuration directive on my
mutualized hosting environment.
Goal is to enable some functions in a specific vhost which have been
disabled globally.
To make as less changes as possible, here is what I did :
In zend_API.h, I changed _zend_function_entry adding a pointer to
itself to keep track of the original function in a disabled function :
typedef struct _zend_function_entry {
const char *fname;
void (*handler)(INTERNAL_FUNCTION_PARAMETERS);
const struct _zend_arg_info *arg_info;
zend_uint num_args;
zend_uint flags;
struct _zend_function_entry* original;
} zend_function_entry;
In zend_API.c, I changed zend_disable_function to swap between
original function and disabled function :
ZEND_API int zend_disable_function(char *function_name, uint
function_name_length TSRMLS_DC) /* {{{ */
{
zend_function_entry *orig;
zend_hash_find(CG(function_table), function_name,
function_name_length+1, (void **) &orig);
if(orig != NULL) {
if(orig->original == NULL) {
zend_function_entry *dummy;
dummy = pemalloc(sizeof(zend_function_entry), 1);
disabled_function[0].fname = function_name;
disabled_function[0].original = orig;
orig=dummy;
if (zend_hash_del(CG(function_table), function_name,
function_name_length+1)==FAILURE) {
return FAILURE;
}
return zend_register_functions(NULL, disabled_function,
CG(function_table), MODULE_PERSISTENT TSRMLS_CC);
}
else {
zend_function_entry *new;
new=orig->original;
if (zend_hash_del(CG(function_table), function_name,
function_name_length+1)==FAILURE) {
return FAILURE;
}
return zend_register_functions(NULL, &new, CG(function_table),
MODULE_PERSISTENT TSRMLS_CC);
}
}
else {
return FAILURE;
}
}
/* }}} */
Expected behaviour is that each time a function is seen is the
"disable_functions" directive, the original and disabled functions are
swapped.
So if I put "php_value disable_functions syslog" in a vhost, it should
re-enable syslog which has been disabled globally.
Of course it does not work.
My code compiles but it does not work as expected.
Could you help me please ?
Perhaps a patch has already been made available for that ?
Thank you very much,
Best regards,
Ben
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