root/ext/standard/incomplete_class.c

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DEFINITIONS

This source file includes following definitions.
  1. incomplete_class_message
  2. incomplete_class_get_property
  3. incomplete_class_write_property
  4. incomplete_class_get_property_ptr_ptr
  5. incomplete_class_unset_property
  6. incomplete_class_has_property
  7. incomplete_class_get_method
  8. php_create_incomplete_object
  9. php_create_incomplete_class
  10. php_lookup_class_name
  11. php_store_class_name

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2015 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:           |
   | http://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>                        |
   +----------------------------------------------------------------------+
*/

/* $Id$ */

#include "php.h"
#include "basic_functions.h"
#include "php_incomplete_class.h"

#define INCOMPLETE_CLASS_MSG \
                "The script tried to execute a method or "  \
                "access a property of 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 a __autoload() function " \
                "to load the class definition "

static zend_object_handlers php_incomplete_object_handlers;

/* {{{ incomplete_class_message
 */
static void incomplete_class_message(zval *object, int error_type TSRMLS_DC)
{
        char *class_name;
        zend_bool class_name_alloced = 1;

        class_name = php_lookup_class_name(object, NULL);

        if (!class_name) {
                class_name_alloced = 0;
                class_name = "unknown";
        }

        php_error_docref(NULL TSRMLS_CC, error_type, INCOMPLETE_CLASS_MSG, class_name);

        if (class_name_alloced) {
                efree(class_name);
        }
}
/* }}} */

static zval *incomplete_class_get_property(zval *object, zval *member, int type, const zend_literal *key TSRMLS_DC) /* {{{ */
{
        incomplete_class_message(object, E_NOTICE TSRMLS_CC);

        if (type == BP_VAR_W || type == BP_VAR_RW) {
                return EG(error_zval_ptr);
        } else {
                return EG(uninitialized_zval_ptr);
        }
}
/* }}} */

static void incomplete_class_write_property(zval *object, zval *member, zval *value, const zend_literal *key TSRMLS_DC) /* {{{ */
{
        incomplete_class_message(object, E_NOTICE TSRMLS_CC);
}
/* }}} */

static zval **incomplete_class_get_property_ptr_ptr(zval *object, zval *member, int type, const zend_literal *key TSRMLS_DC) /* {{{ */
{
        incomplete_class_message(object, E_NOTICE TSRMLS_CC);
        return &EG(error_zval_ptr);
}
/* }}} */

static void incomplete_class_unset_property(zval *object, zval *member, const zend_literal *key TSRMLS_DC) /* {{{ */
{
        incomplete_class_message(object, E_NOTICE TSRMLS_CC);
}
/* }}} */

static int incomplete_class_has_property(zval *object, zval *member, int check_empty, const zend_literal *key TSRMLS_DC) /* {{{ */
{
        incomplete_class_message(object, E_NOTICE TSRMLS_CC);
        return 0;
}
/* }}} */

static union _zend_function *incomplete_class_get_method(zval **object, char *method, int method_len, const zend_literal *key TSRMLS_DC) /* {{{ */
{
        incomplete_class_message(*object, E_ERROR TSRMLS_CC);
        return NULL;
}
/* }}} */

/* {{{ php_create_incomplete_class
 */
static zend_object_value php_create_incomplete_object(zend_class_entry *class_type TSRMLS_DC)
{
        zend_object *object;
        zend_object_value value;

        value = zend_objects_new(&object, class_type TSRMLS_CC);
        value.handlers = &php_incomplete_object_handlers;

        object_properties_init(object, class_type);

        return value;
}

PHPAPI zend_class_entry *php_create_incomplete_class(TSRMLS_D)
{
        zend_class_entry incomplete_class;

        INIT_CLASS_ENTRY(incomplete_class, INCOMPLETE_CLASS, NULL);
        incomplete_class.create_object = php_create_incomplete_object;

        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;

        return zend_register_internal_class(&incomplete_class TSRMLS_CC);
}
/* }}} */

/* {{{ php_lookup_class_name
 */
PHPAPI char *php_lookup_class_name(zval *object, zend_uint *nlen)
{
        zval **val;
        char *retval = NULL;
        HashTable *object_properties;
        TSRMLS_FETCH();

        object_properties = Z_OBJPROP_P(object);

        if (zend_hash_find(object_properties, MAGIC_MEMBER, sizeof(MAGIC_MEMBER), (void **) &val) == SUCCESS && Z_TYPE_PP(val) == IS_STRING) {
                retval = estrndup(Z_STRVAL_PP(val), Z_STRLEN_PP(val));

                if (nlen) {
                        *nlen = Z_STRLEN_PP(val);
                }
        }

        return retval;
}
/* }}} */

/* {{{ php_store_class_name
 */
PHPAPI void php_store_class_name(zval *object, const char *name, zend_uint len)
{
        zval *val;
        TSRMLS_FETCH();

        MAKE_STD_ZVAL(val);

        Z_TYPE_P(val)   = IS_STRING;
        Z_STRVAL_P(val) = estrndup(name, len);
        Z_STRLEN_P(val) = len;

        zend_hash_update(Z_OBJPROP_P(object), MAGIC_MEMBER, sizeof(MAGIC_MEMBER), &val, sizeof(val), NULL);
}
/* }}} */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: sw=4 ts=4 fdm=marker
 * vim<600: sw=4 ts=4
 */

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