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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Sascha Schumann <sascha@schumann.cx> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "basic_functions.h"
#include "php_incomplete_class.h"
#define INCOMPLETE_CLASS_MSG \
"The script tried to %s on an incomplete object. " \
"Please ensure that the class definition \"%s\" of the object " \
"you are trying to operate on was loaded _before_ " \
"unserialize() gets called or provide an autoloader " \
"to load the class definition"
PHPAPI zend_class_entry *php_ce_incomplete_class;
static zend_object_handlers php_incomplete_object_handlers;
static void incomplete_class_message(zend_object *object)
{
zend_string *class_name = php_lookup_class_name(object);
php_error_docref(NULL, E_WARNING, INCOMPLETE_CLASS_MSG,
"access a property", class_name ? ZSTR_VAL(class_name) : "unknown");
if (class_name) {
zend_string_release_ex(class_name, 0);
}
}
static void throw_incomplete_class_error(zend_object *object, const char *what)
{
zend_string *class_name = php_lookup_class_name(object);
zend_throw_error(NULL, INCOMPLETE_CLASS_MSG,
what, class_name ? ZSTR_VAL(class_name) : "unknown");
if (class_name) {
zend_string_release_ex(class_name, 0);
}
}
static zval *incomplete_class_get_property(zend_object *object, zend_string *member, int type, void **cache_slot, zval *rv) /* {{{ */
{
incomplete_class_message(object);
if (type == BP_VAR_W || type == BP_VAR_RW) {
ZVAL_ERROR(rv);
return rv;
} else {
return &EG(uninitialized_zval);
}
}
/* }}} */
static zval *incomplete_class_write_property(zend_object *object, zend_string *member, zval *value, void **cache_slot) /* {{{ */
{
throw_incomplete_class_error(object, "modify a property");
return value;
}
/* }}} */
static zval *incomplete_class_get_property_ptr_ptr(zend_object *object, zend_string *member, int type, void **cache_slot) /* {{{ */
{
throw_incomplete_class_error(object, "modify a property");
return &EG(error_zval);
}
/* }}} */
static void incomplete_class_unset_property(zend_object *object, zend_string *member, void **cache_slot) /* {{{ */
{
throw_incomplete_class_error(object, "modify a property");
}
/* }}} */
static int incomplete_class_has_property(zend_object *object, zend_string *member, int check_empty, void **cache_slot) /* {{{ */
{
incomplete_class_message(object);
return 0;
}
/* }}} */
static zend_function *incomplete_class_get_method(zend_object **object, zend_string *method, const zval *key) /* {{{ */
{
throw_incomplete_class_error(*object, "call a method");
return NULL;
}
/* }}} */
/* {{{ php_create_incomplete_class */
static zend_object *php_create_incomplete_object(zend_class_entry *class_type)
{
zend_object *object;
object = zend_objects_new( class_type);
object->handlers = &php_incomplete_object_handlers;
object_properties_init(object, class_type);
return object;
}
PHPAPI void php_register_incomplete_class_handlers(void)
{
memcpy(&php_incomplete_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
php_incomplete_object_handlers.read_property = incomplete_class_get_property;
php_incomplete_object_handlers.has_property = incomplete_class_has_property;
php_incomplete_object_handlers.unset_property = incomplete_class_unset_property;
php_incomplete_object_handlers.write_property = incomplete_class_write_property;
php_incomplete_object_handlers.get_property_ptr_ptr = incomplete_class_get_property_ptr_ptr;
php_incomplete_object_handlers.get_method = incomplete_class_get_method;
php_ce_incomplete_class->create_object = php_create_incomplete_object;
}
/* }}} */
/* {{{ php_lookup_class_name */
PHPAPI zend_string *php_lookup_class_name(zend_object *object)
{
if (object->properties) {
zval *val = zend_hash_str_find(object->properties, MAGIC_MEMBER, sizeof(MAGIC_MEMBER)-1);
if (val != NULL && Z_TYPE_P(val) == IS_STRING) {
return zend_string_copy(Z_STR_P(val));
}
}
return NULL;
}
/* }}} */
/* {{{ php_store_class_name */
PHPAPI void php_store_class_name(zval *object, zend_string *name)
{
zval val;
ZVAL_STR_COPY(&val, name);
zend_hash_str_update(Z_OBJPROP_P(object), MAGIC_MEMBER, sizeof(MAGIC_MEMBER)-1, &val);
}
/* }}} */
|