1/*
2   +----------------------------------------------------------------------+
3   | Zend Engine                                                          |
4   +----------------------------------------------------------------------+
5   | Copyright (c) 1998-2013 Zend Technologies Ltd. (http://www.zend.com) |
6   +----------------------------------------------------------------------+
7   | This source file is subject to version 2.00 of the Zend license,     |
8   | that is bundled with this package in the file LICENSE, and is        |
9   | available through the world-wide-web at the following url:           |
10   | http://www.zend.com/license/2_00.txt.                                |
11   | If you did not receive a copy of the Zend license and are unable to  |
12   | obtain it through the world-wide-web, please send a note to          |
13   | license@zend.com so we can mail you a copy immediately.              |
14   +----------------------------------------------------------------------+
15   | Authors: Andi Gutmans <andi@zend.com>                                |
16   |          Zeev Suraski <zeev@zend.com>                                |
17   +----------------------------------------------------------------------+
18*/
19
20/* $Id$ */
21
22#include "zend.h"
23#include "zend_globals.h"
24#include "zend_variables.h"
25#include "zend_API.h"
26#include "zend_interfaces.h"
27#include "zend_exceptions.h"
28
29ZEND_API void zend_object_std_init(zend_object *object, zend_class_entry *ce TSRMLS_DC)
30{
31    ALLOC_HASHTABLE(object->properties);
32    zend_hash_init(object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
33
34    object->ce = ce;
35    object->guards = NULL;
36}
37
38ZEND_API void zend_object_std_dtor(zend_object *object TSRMLS_DC)
39{
40    if (object->guards) {
41        zend_hash_destroy(object->guards);
42        FREE_HASHTABLE(object->guards);
43    }
44    if (object->properties) {
45        zend_hash_destroy(object->properties);
46        FREE_HASHTABLE(object->properties);
47    }
48}
49
50ZEND_API void zend_objects_destroy_object(zend_object *object, zend_object_handle handle TSRMLS_DC)
51{
52    zend_function *destructor = object ? object->ce->destructor : NULL;
53
54    if (destructor) {
55        zval *old_exception;
56        zval *obj;
57        zend_object_store_bucket *obj_bucket;
58
59        if (destructor->op_array.fn_flags & (ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED)) {
60            if (destructor->op_array.fn_flags & ZEND_ACC_PRIVATE) {
61                /* Ensure that if we're calling a private function, we're allowed to do so.
62                 */
63                if (object->ce != EG(scope)) {
64                    zend_class_entry *ce = object->ce;
65
66                    zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
67                        "Call to private %s::__destruct() from context '%s'%s",
68                        ce->name,
69                        EG(scope) ? EG(scope)->name : "",
70                        EG(in_execution) ? "" : " during shutdown ignored");
71                    return;
72                }
73            } else {
74                /* Ensure that if we're calling a protected function, we're allowed to do so.
75                 */
76                if (!zend_check_protected(destructor->common.scope, EG(scope))) {
77                    zend_class_entry *ce = object->ce;
78
79                    zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
80                        "Call to protected %s::__destruct() from context '%s'%s",
81                        ce->name,
82                        EG(scope) ? EG(scope)->name : "",
83                        EG(in_execution) ? "" : " during shutdown ignored");
84                    return;
85                }
86            }
87        }
88
89        MAKE_STD_ZVAL(obj);
90        Z_TYPE_P(obj) = IS_OBJECT;
91        Z_OBJ_HANDLE_P(obj) = handle;
92        obj_bucket = &EG(objects_store).object_buckets[handle];
93        if (!obj_bucket->bucket.obj.handlers) {
94            obj_bucket->bucket.obj.handlers = &std_object_handlers;
95        }
96        Z_OBJ_HT_P(obj) = obj_bucket->bucket.obj.handlers;
97        zval_copy_ctor(obj);
98
99        /* Make sure that destructors are protected from previously thrown exceptions.
100         * For example, if an exception was thrown in a function and when the function's
101         * local variable destruction results in a destructor being called.
102         */
103        old_exception = NULL;
104        if (EG(exception)) {
105            if (Z_OBJ_HANDLE_P(EG(exception)) == handle) {
106                zend_error(E_ERROR, "Attempt to destruct pending exception");
107            } else {
108                old_exception = EG(exception);
109                EG(exception) = NULL;
110            }
111        }
112        zend_call_method_with_0_params(&obj, object->ce, &destructor, ZEND_DESTRUCTOR_FUNC_NAME, NULL);
113        if (old_exception) {
114            if (EG(exception)) {
115                zend_exception_set_previous(EG(exception), old_exception TSRMLS_CC);
116            } else {
117                EG(exception) = old_exception;
118            }
119        }
120        zval_ptr_dtor(&obj);
121    }
122}
123
124ZEND_API void zend_objects_free_object_storage(zend_object *object TSRMLS_DC)
125{
126    zend_object_std_dtor(object TSRMLS_CC);
127    efree(object);
128}
129
130ZEND_API zend_object_value zend_objects_new(zend_object **object, zend_class_entry *class_type TSRMLS_DC)
131{
132    zend_object_value retval;
133
134    *object = emalloc(sizeof(zend_object));
135    (*object)->ce = class_type;
136    retval.handle = zend_objects_store_put(*object, (zend_objects_store_dtor_t) zend_objects_destroy_object, (zend_objects_free_object_storage_t) zend_objects_free_object_storage, NULL TSRMLS_CC);
137    retval.handlers = &std_object_handlers;
138    (*object)->guards = NULL;
139    return retval;
140}
141
142ZEND_API zend_object *zend_objects_get_address(const zval *zobject TSRMLS_DC)
143{
144    return (zend_object *)zend_object_store_get_object(zobject TSRMLS_CC);
145}
146
147ZEND_API void zend_objects_clone_members(zend_object *new_object, zend_object_value new_obj_val, zend_object *old_object, zend_object_handle handle TSRMLS_DC)
148{
149    zend_hash_copy(new_object->properties, old_object->properties, zval_copy_property_ctor(old_object->ce), (void *) NULL /* Not used anymore */, sizeof(zval *));
150
151    if (old_object->ce->clone) {
152        zval *new_obj;
153
154        MAKE_STD_ZVAL(new_obj);
155        new_obj->type = IS_OBJECT;
156        new_obj->value.obj = new_obj_val;
157        zval_copy_ctor(new_obj);
158
159        zend_call_method_with_0_params(&new_obj, old_object->ce, &old_object->ce->clone, ZEND_CLONE_FUNC_NAME, NULL);
160
161        zval_ptr_dtor(&new_obj);
162    }
163}
164
165ZEND_API zend_object_value zend_objects_clone_obj(zval *zobject TSRMLS_DC)
166{
167    zend_object_value new_obj_val;
168    zend_object *old_object;
169    zend_object *new_object;
170    zend_object_handle handle = Z_OBJ_HANDLE_P(zobject);
171
172    /* assume that create isn't overwritten, so when clone depends on the
173     * overwritten one then it must itself be overwritten */
174    old_object = zend_objects_get_address(zobject TSRMLS_CC);
175    new_obj_val = zend_objects_new(&new_object, old_object->ce TSRMLS_CC);
176
177    ALLOC_HASHTABLE(new_object->properties);
178    zend_hash_init(new_object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
179
180    zend_objects_clone_members(new_object, new_obj_val, old_object, handle TSRMLS_CC);
181
182    return new_obj_val;
183}
184
185/*
186 * Local variables:
187 * tab-width: 4
188 * c-basic-offset: 4
189 * indent-tabs-mode: t
190 * End:
191 */
192