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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2001 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 0.92 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.zend.com/license/0_92.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/


#include "zend.h"
#include "zend_execute.h"
#include "zend_API.h"
#include "zend_modules.h"
#include "zend_constants.h"

#ifdef HAVE_STDARG_H
#include <stdarg.h>
#endif

/* these variables are true statics/globals, and have to be mutex'ed on every access */
static int module_count=0;
ZEND_API HashTable module_registry;

/* this function doesn't check for too many parameters */
ZEND_API int zend_get_parameters(int ht, int param_count, ...)
{
void **p;
int arg_count;
va_list ptr;
zval **param, *param_ptr;
ELS_FETCH();

p = EG(argument_stack).top_element-2;
arg_count = (ulong) *p;

if (param_count>arg_count) {
return FAILURE;
}

va_start(ptr, param_count);

while (param_count-->0) {
param = va_arg(ptr, zval **);
param_ptr = *(p-arg_count);
if (!PZVAL_IS_REF(param_ptr) && param_ptr->refcount>1) {
zval *new_tmp;

ALLOC_ZVAL(new_tmp);
*new_tmp = *param_ptr;
zval_copy_ctor(new_tmp);
INIT_PZVAL(new_tmp);
param_ptr = new_tmp;
((zval *) *(p-arg_count))->refcount--;
*(p-arg_count) = param_ptr;
}
*param = param_ptr;
arg_count--;
}
va_end(ptr);

return SUCCESS;
}


ZEND_API int zend_get_parameters_array(int ht, int param_count, zval **argument_array)
{
void **p;
int arg_count;
zval *param_ptr;
ELS_FETCH();

p = EG(argument_stack).top_element-2;
arg_count = (ulong) *p;

if (param_count>arg_count) {
return FAILURE;
}

while (param_count-->0) {
param_ptr = *(p-arg_count);
if (!PZVAL_IS_REF(param_ptr) && param_ptr->refcount>1) {
zval *new_tmp;

ALLOC_ZVAL(new_tmp);
*new_tmp = *param_ptr;
zval_copy_ctor(new_tmp);
INIT_PZVAL(new_tmp);
param_ptr = new_tmp;
((zval *) *(p-arg_count))->refcount--;
*(p-arg_count) = param_ptr;
}
*(argument_array++) = param_ptr;
arg_count--;
}

return SUCCESS;
}




/* Zend-optimized Extended functions */
/* this function doesn't check for too many parameters */
ZEND_API int zend_get_parameters_ex(int param_count, ...)
{
void **p;
int arg_count;
va_list ptr;
zval ***param;
ELS_FETCH();

p = EG(argument_stack).top_element-2;
arg_count = (ulong) *p;

if (param_count>arg_count) {
return FAILURE;
}

va_start(ptr, param_count);
while (param_count-->0) {
param = va_arg(ptr, zval ***);
*param = (zval **) p-(arg_count--);
}
va_end(ptr);

return SUCCESS;
}


ZEND_API int zend_get_parameters_array_ex(int param_count, zval ***argument_array)
{
void **p;
int arg_count;
ELS_FETCH();

p = EG(argument_stack).top_element-2;
arg_count = (ulong) *p;

if (param_count>arg_count) {
return FAILURE;
}

while (param_count-->0) {
*(argument_array++) = (zval **) p-(arg_count--);
}

return SUCCESS;
}


ZEND_API int ParameterPassedByReference(int ht, uint n)
{
void **p;
ulong arg_count;
zval *arg;
ELS_FETCH();

p = EG(argument_stack).elements+EG(argument_stack).top-2;
arg_count = (ulong) *p;

if (n>arg_count) {
return FAILURE;
}
arg = (zval *) *(p-arg_count+n-1);
return PZVAL_IS_REF(arg);
}


ZEND_API void wrong_param_count()
{
zend_error(E_WARNING,"Wrong parameter count for %s()",get_active_function_name());
}


ZEND_API inline int _array_init(zval *arg ZEND_FILE_LINE_DC)
{
ALLOC_HASHTABLE_REL(arg->value.ht);

if (!arg->value.ht || zend_hash_init(arg->value.ht, 0, NULL, ZVAL_PTR_DTOR, 0)) {
zend_error(E_ERROR, "Cannot allocate memory for array");
return FAILURE;
}
arg->type = IS_ARRAY;
return SUCCESS;
}


ZEND_API inline int _object_init_ex(zval *arg, zend_class_entry *class_type ZEND_FILE_LINE_DC)
{
zval *tmp;

if (!class_type->constants_updated) {
zend_hash_apply_with_argument(&class_type->default_properties, (int (*)(void *,void *)) zval_update_constant, (void *) 1);
class_type->constants_updated = 1;
}

ALLOC_HASHTABLE_REL(arg->value.obj.properties);
zend_hash_init(arg->value.obj.properties, 0, NULL, ZVAL_PTR_DTOR, 0);
zend_hash_copy(arg->value.obj.properties, &class_type->default_properties, (copy_ctor_func_t) zval_add_ref, (void *) &tmp, sizeof(zval *));
arg->type = IS_OBJECT;
arg->value.obj.ce = class_type;
return SUCCESS;
}


ZEND_API inline int _object_init(zval *arg ZEND_FILE_LINE_DC)
{
return _object_init_ex(arg, &zend_standard_class_def ZEND_FILE_LINE_CC);
}


ZEND_API inline int add_assoc_function(zval *arg, char *key,void (*function_ptr)(INTERNAL_FUNCTION_PARAMETERS))
{
zend_error(E_WARNING, "add_assoc_function() is no longer supported");
return FAILURE;
}


ZEND_API inline int add_assoc_long_ex(zval *arg, char *key, uint key_len, long n)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_LONG(tmp, n);

return zend_hash_update(Z_ARRVAL_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}

ZEND_API inline int add_assoc_null_ex(zval *arg, char *key, uint key_len)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_NULL(tmp);

return zend_hash_update(Z_ARRVAL_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}

ZEND_API inline int add_assoc_bool_ex(zval *arg, char *key, uint key_len, int b)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_BOOL(tmp, b);

return zend_hash_update(Z_ARRVAL_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}

ZEND_API inline int add_assoc_resource_ex(zval *arg, char *key, uint key_len, int r)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_RESOURCE(tmp, r);

return zend_hash_update(Z_ARRVAL_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_assoc_double_ex(zval *arg, char *key, uint key_len, double d)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_DOUBLE(tmp, d);

return zend_hash_update(Z_ARRVAL_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_assoc_string_ex(zval *arg, char *key, uint key_len, char *str, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRING(tmp, str, duplicate);

return zend_hash_update(Z_ARRVAL_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_assoc_stringl_ex(zval *arg, char *key, uint key_len, char *str, uint length, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRINGL(tmp, str, length, duplicate);

return zend_hash_update(Z_ARRVAL_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}

ZEND_API inline int add_assoc_zval_ex(zval *arg, char *key, uint key_len, zval *value)
{
return zend_hash_update(Z_ARRVAL_P(arg), key, key_len, (void *) &value, sizeof(zval *), NULL);
}


ZEND_API inline int add_index_long(zval *arg, uint index, long n)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_LONG(tmp, n);

return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &tmp, sizeof(zval *),NULL);
}


ZEND_API inline int add_index_null(zval *arg, uint index)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_NULL(tmp);

return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &tmp, sizeof(zval *), NULL);
}

ZEND_API inline int add_index_bool(zval *arg, uint index, int b)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_BOOL(tmp, b);

return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &tmp, sizeof(zval *),NULL);
}


ZEND_API inline int add_index_resource(zval *arg, uint index, int r)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_RESOURCE(tmp, r);

return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &tmp, sizeof(zval *),NULL);
}


ZEND_API inline int add_index_double(zval *arg, uint index, double d)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_DOUBLE(tmp, d);

return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &tmp, sizeof(zval *),NULL);
}


ZEND_API inline int add_index_string(zval *arg, uint index, char *str, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRING(tmp, str, duplicate);

return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_index_stringl(zval *arg, uint index, char *str, uint length, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRINGL(tmp, str, length, duplicate);

return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_index_zval(zval *arg, uint index, zval *value)
{
return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &value, sizeof(zval *), NULL);
}


ZEND_API inline int add_next_index_long(zval *arg, long n)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_LONG(tmp, n);

return zend_hash_next_index_insert(Z_ARRVAL_P(arg), &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_next_index_null(zval *arg)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_NULL(tmp);

return zend_hash_next_index_insert(Z_ARRVAL_P(arg), &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_next_index_bool(zval *arg, int b)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_BOOL(tmp, b);

return zend_hash_next_index_insert(Z_ARRVAL_P(arg), &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_next_index_resource(zval *arg, int r)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_RESOURCE(tmp, r);

return zend_hash_next_index_insert(Z_ARRVAL_P(arg), &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_next_index_double(zval *arg, double d)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_DOUBLE(tmp, d);

return zend_hash_next_index_insert(Z_ARRVAL_P(arg), &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_next_index_string(zval *arg, char *str, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRING(tmp, str, duplicate);

return zend_hash_next_index_insert(Z_ARRVAL_P(arg), &tmp, sizeof(zval *),NULL);
}


ZEND_API inline int add_next_index_stringl(zval *arg, char *str, uint length, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRINGL(tmp, str, length, duplicate);

return zend_hash_next_index_insert(Z_ARRVAL_P(arg), &tmp, sizeof(zval *),NULL);
}


ZEND_API inline int add_next_index_zval(zval *arg, zval *value)
{
return zend_hash_next_index_insert(Z_ARRVAL_P(arg), &value, sizeof(zval *), NULL);
}


ZEND_API inline int add_get_assoc_string_ex(zval *arg, char *key, uint key_len, char *str, void **dest, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRING(tmp, str, duplicate);

return zend_hash_update(Z_ARRVAL_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), dest);
}


ZEND_API inline int add_get_assoc_stringl_ex(zval *arg, char *key, uint key_len, char *str, uint length, void **dest, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRINGL(tmp, str, length, duplicate);

return zend_hash_update(Z_ARRVAL_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), dest);
}


ZEND_API inline int add_get_index_long(zval *arg, uint index, long l, void **dest)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_LONG(tmp, l);

return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &tmp, sizeof(zval *), dest);
}


ZEND_API inline int add_get_index_double(zval *arg, uint index, double d, void **dest)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_DOUBLE(tmp, d);

return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &tmp, sizeof(zval *), dest);
}


ZEND_API inline int add_get_index_string(zval *arg, uint index, char *str, void **dest, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRING(tmp, str, duplicate);

return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &tmp, sizeof(zval *),dest);
}


ZEND_API inline int add_get_index_stringl(zval *arg, uint index, char *str, uint length, void **dest, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRINGL(tmp, str, length, duplicate);

return zend_hash_index_update(Z_ARRVAL_P(arg), index, (void *) &tmp, sizeof(zval *), dest);
}


ZEND_API inline int add_property_long_ex(zval *arg, char *key, uint key_len, long n)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_LONG(tmp, n);

return zend_hash_update(Z_OBJPROP_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}

ZEND_API inline int add_property_bool_ex(zval *arg, char *key, uint key_len, int b)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_BOOL(tmp, b);

return zend_hash_update(Z_OBJPROP_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}

ZEND_API inline int add_property_null_ex(zval *arg, char *key, uint key_len)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_NULL(tmp);

return zend_hash_update(Z_OBJPROP_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}

ZEND_API inline int add_property_resource_ex(zval *arg, char *key, uint key_len, long n)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_RESOURCE(tmp, n);

return zend_hash_update(Z_OBJPROP_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_property_double_ex(zval *arg, char *key, uint key_len, double d)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_DOUBLE(tmp, d);

return zend_hash_update(Z_OBJPROP_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}


ZEND_API inline int add_property_string_ex(zval *arg, char *key, uint key_len, char *str, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRING(tmp, str, duplicate);

return zend_hash_update(Z_OBJPROP_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}

ZEND_API inline int add_property_stringl_ex(zval *arg, char *key, uint key_len, char *str, uint length, int duplicate)
{
zval *tmp;

MAKE_STD_ZVAL(tmp);
ZVAL_STRINGL(tmp, str, length, duplicate);

return zend_hash_update(Z_OBJPROP_P(arg), key, key_len, (void *) &tmp, sizeof(zval *), NULL);
}

ZEND_API inline int add_property_zval_ex(zval *arg, char *key, uint key_len, zval *value)
{
return zend_hash_update(Z_OBJPROP_P(arg), key, key_len, (void *) &value, sizeof(zval *), NULL);
}

ZEND_API int zend_startup_module(zend_module_entry *module)
{
if (module) {
module->module_number = zend_next_free_module();
if (module->module_startup_func) {
ELS_FETCH();

if (module->module_startup_func(MODULE_PERSISTENT, module->module_number ELS_CC)==FAILURE) {
zend_error(E_CORE_ERROR,"Unable to start %s module",module->name);
return FAILURE;
}
}
module->type = MODULE_PERSISTENT;
zend_register_module(module);
}
return SUCCESS;
}


/* registers all functions in *library_functions in the function hash */
int zend_register_functions(zend_function_entry *functions, HashTable *function_table, int type)
{
zend_function_entry *ptr = functions;
zend_function function;
zend_internal_function *internal_function = (zend_internal_function *)&function;
int count=0,unload=0;
HashTable *target_function_table = function_table;
int error_type;
CLS_FETCH();

if (type==MODULE_PERSISTENT) {
error_type = E_CORE_WARNING;
} else {
error_type = E_WARNING;
}

if (!target_function_table) {
target_function_table = CG(function_table);
}
internal_function->type = ZEND_INTERNAL_FUNCTION;

while (ptr->fname) {
internal_function->handler = ptr->handler;
internal_function->arg_types = ptr->func_arg_types;
internal_function->function_name = ptr->fname;
if (!internal_function->handler) {
zend_error(error_type, "Null function defined as active function");
zend_unregister_functions(functions, count, target_function_table);
return FAILURE;
}
if (zend_hash_add(target_function_table, ptr->fname, strlen(ptr->fname)+1, &function, sizeof(zend_function), NULL) == FAILURE) {
unload=1;
break;
}
ptr++;
count++;
}
if (unload) { /* before unloading, display all remaining bad function in the module */
while (ptr->fname) {
if (zend_hash_exists(target_function_table, ptr->fname, strlen(ptr->fname)+1)) {
zend_error(error_type, "Function registration failed - duplicate name - %s",ptr->fname);
}
ptr++;
}
zend_unregister_functions(functions, count, target_function_table);
return FAILURE;
}
return SUCCESS;
}

/* count=-1 means erase all functions, otherwise,
* erase the first count functions
*/
void zend_unregister_functions(zend_function_entry *functions, int count, HashTable *function_table)
{
zend_function_entry *ptr = functions;
int i=0;
HashTable *target_function_table = function_table;
CLS_FETCH();

if (!target_function_table) {
target_function_table = CG(function_table);
}
while (ptr->fname) {
if (count!=-1 && i>=count) {
break;
}
#if 0
zend_printf("Unregistering %s()\n", ptr->fname);
#endif
zend_hash_del(target_function_table, ptr->fname, strlen(ptr->fname)+1);
ptr++;
i++;
}
}


ZEND_API int zend_register_module(zend_module_entry *module)
{
#if 0
zend_printf("%s: Registering module %d\n",module->name, module->module_number);
#endif
if (module->functions && zend_register_functions(module->functions, NULL, module->type)==FAILURE) {
zend_error(E_CORE_WARNING,"%s: Unable to register functions, unable to load",module->name);
return FAILURE;
}
module->module_started=1;
return zend_hash_add(&module_registry, module->name,strlen(module->name)+1,(void *)module,sizeof(zend_module_entry),NULL);
}


void module_destructor(zend_module_entry *module)
{
if (module->type == MODULE_TEMPORARY) {
zend_clean_module_rsrc_dtors(module->module_number);
clean_module_constants(module->module_number);
if (module->request_shutdown_func)
module->request_shutdown_func(module->type, module->module_number);
}

if (module->module_started && module->module_shutdown_func) {
#if 0
zend_printf("%s: Module shutdown\n",module->name);
#endif
module->module_shutdown_func(module->type, module->module_number);
}
module->module_started=0;
if (module->functions) {
zend_unregister_functions(module->functions, -1, NULL);
}

#if HAVE_LIBDL
if (module->handle) {
dlclose(module->handle);
}
#endif
}


/* call request startup for all modules */
int module_registry_request_startup(zend_module_entry *module)
{
if (module->request_startup_func) {
ELS_FETCH();

#if 0
zend_printf("%s: Request startup\n",module->name);
#endif
if (module->request_startup_func(module->type, module->module_number ELS_CC)==FAILURE) {
zend_error(E_WARNING, "request_startup() for %s module failed", module->name);
exit(1);
}
}
return 0;
}


/* for persistent modules - call request shutdown and flag NOT to erase
* for temporary modules - do nothing, and flag to erase
*/
int module_registry_cleanup(zend_module_entry *module)
{
switch(module->type) {
case MODULE_PERSISTENT:
if (module->request_shutdown_func) {
#if 0
zend_printf("%s: Request shutdown\n",module->name);
#endif
module->request_shutdown_func(module->type, module->module_number);
}
return 0;
break;
case MODULE_TEMPORARY:
return 1;
break;
}
return 0;
}


/* return the next free module number */
int zend_next_free_module(void)
{
return ++module_count;
}

/* If parent_ce is not NULL then it inherits from parent_ce
* If parent_ce is NULL and parent_name isn't then it looks for the parent and inherits from it
* If both parent_ce and parent_name are NULL it does a regular class registration
* If parent_name is specified but not found NULL is returned
*/
ZEND_API zend_class_entry *zend_register_internal_class_ex(zend_class_entry *class_entry, zend_class_entry *parent_ce, char *parent_name)
{
zend_class_entry *register_class;
CLS_FETCH();

if (!parent_ce && parent_name) {
if (zend_hash_find(CG(class_table), parent_name, strlen(parent_name)+1, (void **) &parent_ce)==FAILURE) {
return NULL;
}
}

register_class = zend_register_internal_class(class_entry);

if (parent_ce) {
zend_do_inheritance(register_class, parent_ce);
}
return register_class;
}

ZEND_API zend_class_entry *zend_register_internal_class(zend_class_entry *class_entry)
{
zend_class_entry *register_class;
char *lowercase_name = zend_strndup(class_entry->name, class_entry->name_length);
CLS_FETCH();

zend_str_tolower(lowercase_name, class_entry->name_length);

class_entry->type = ZEND_INTERNAL_CLASS;
class_entry->parent = NULL;
class_entry->refcount = (int *) malloc(sizeof(int));
*class_entry->refcount = 1;
class_entry->constants_updated = 0;
zend_hash_init(&class_entry->default_properties, 0, NULL, ZVAL_PTR_DTOR, 1);
zend_hash_init(&class_entry->function_table, 0, NULL, ZEND_FUNCTION_DTOR, 1);


if (class_entry->builtin_functions) {
zend_register_functions(class_entry->builtin_functions, &class_entry->function_table, MODULE_PERSISTENT);
}

zend_hash_update(CG(class_table), lowercase_name, class_entry->name_length+1, class_entry, sizeof(zend_class_entry), (void **) &register_class);
free(lowercase_name);
return register_class;
}


ZEND_API zend_module_entry *zend_get_module(int module_number)
{
zend_module_entry *module;

if (zend_hash_index_find(&module_registry, module_number, (void **) &module)==SUCCESS) {
return module;
} else {
return NULL;
}
}

ZEND_API int zend_set_hash_symbol(zval *symbol, char *name, int name_length,
                                  int is_ref, int num_symbol_tables, ...)
{
    HashTable *symbol_table;
    va_list symbol_table_list;

    if (num_symbol_tables <= 0) return FAILURE;

    symbol->is_ref = is_ref;

    va_start(symbol_table_list, num_symbol_tables);
    while(num_symbol_tables-- > 0) {
        symbol_table = va_arg(symbol_table_list, HashTable *);
        zend_hash_update(symbol_table, name, name_length + 1, &symbol, sizeof(zval *), NULL);
        zval_add_ref(&symbol);
    }
    va_end(symbol_table_list);
    return SUCCESS;
}




/* Disabled functions support */

static ZEND_FUNCTION(display_disabled_function)
{
zend_error(E_WARNING, "%s() has been disabled for security reasons.", get_active_function_name());
}


static zend_function_entry disabled_function[] = {
ZEND_FE(display_disabled_function, NULL)
{ NULL, NULL, NULL }
};


ZEND_API int zend_disable_function(char *function_name, uint function_name_length)
{
CLS_FETCH();

if (zend_hash_del(CG(function_table), function_name, function_name_length+1)==FAILURE) {
return FAILURE;
}
disabled_function[0].fname = function_name;
return zend_register_functions(disabled_function, CG(function_table), MODULE_PERSISTENT);
}

ZEND_API zend_bool zend_is_callable(zval *function)
{
char *lcname;
zend_bool retval = 0;
ELS_FETCH();

switch (Z_TYPE_P(function)) {
case IS_STRING:
lcname = estrndup(Z_STRVAL_P(function), Z_STRLEN_P(function));
zend_str_tolower(lcname, Z_STRLEN_P(function));
if (zend_hash_exists(EG(function_table), lcname, Z_STRLEN_P(function)+1))
retval = 1;
efree(lcname);
break;

case IS_ARRAY:
{
zval **method;
zval **obj;

if (zend_hash_index_find(Z_ARRVAL_P(function), 0, (void **) &obj) == SUCCESS &&
zend_hash_index_find(Z_ARRVAL_P(function), 1, (void **) &method) == SUCCESS &&
Z_TYPE_PP(obj) == IS_OBJECT &&
Z_TYPE_PP(method) == IS_STRING) {
lcname = estrndup(Z_STRVAL_PP(method), Z_STRLEN_PP(method));
zend_str_tolower(lcname, Z_STRLEN_PP(method));
if (zend_hash_exists(&Z_OBJCE_PP(obj)->function_table, lcname, Z_STRLEN_PP(method)+1))
retval = 1;
efree(lcname);
}
}
break;

default:
break;
}

return retval;
}
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