1 /*
2 +----------------------------------------------------------------------+
3 | Zend Engine |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1998-2015 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
zend_object_std_init(zend_object * object,zend_class_entry * ce TSRMLS_DC)29 ZEND_API void zend_object_std_init(zend_object *object, zend_class_entry *ce TSRMLS_DC)
30 {
31 object->ce = ce;
32 object->properties = NULL;
33 object->properties_table = NULL;
34 object->guards = NULL;
35 }
36
zend_object_std_dtor(zend_object * object TSRMLS_DC)37 ZEND_API void zend_object_std_dtor(zend_object *object TSRMLS_DC)
38 {
39 if (object->guards) {
40 zend_hash_destroy(object->guards);
41 FREE_HASHTABLE(object->guards);
42 }
43 if (object->properties) {
44 zend_hash_destroy(object->properties);
45 FREE_HASHTABLE(object->properties);
46 if (object->properties_table) {
47 efree(object->properties_table);
48 }
49 } else if (object->properties_table) {
50 int i;
51
52 for (i = 0; i < object->ce->default_properties_count; i++) {
53 if (object->properties_table[i]) {
54 zval_ptr_dtor(&object->properties_table[i]);
55 }
56 }
57 efree(object->properties_table);
58 }
59 }
60
zend_objects_destroy_object(zend_object * object,zend_object_handle handle TSRMLS_DC)61 ZEND_API void zend_objects_destroy_object(zend_object *object, zend_object_handle handle TSRMLS_DC)
62 {
63 zend_function *destructor = object ? object->ce->destructor : NULL;
64
65 if (destructor) {
66 zval *old_exception;
67 zval *obj;
68 zend_object_store_bucket *obj_bucket;
69
70 if (destructor->op_array.fn_flags & (ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED)) {
71 if (destructor->op_array.fn_flags & ZEND_ACC_PRIVATE) {
72 /* Ensure that if we're calling a private function, we're allowed to do so.
73 */
74 if (object->ce != EG(scope)) {
75 zend_class_entry *ce = object->ce;
76
77 zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
78 "Call to private %s::__destruct() from context '%s'%s",
79 ce->name,
80 EG(scope) ? EG(scope)->name : "",
81 EG(in_execution) ? "" : " during shutdown ignored");
82 return;
83 }
84 } else {
85 /* Ensure that if we're calling a protected function, we're allowed to do so.
86 */
87 if (!zend_check_protected(zend_get_function_root_class(destructor), EG(scope))) {
88 zend_class_entry *ce = object->ce;
89
90 zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
91 "Call to protected %s::__destruct() from context '%s'%s",
92 ce->name,
93 EG(scope) ? EG(scope)->name : "",
94 EG(in_execution) ? "" : " during shutdown ignored");
95 return;
96 }
97 }
98 }
99
100 MAKE_STD_ZVAL(obj);
101 Z_TYPE_P(obj) = IS_OBJECT;
102 Z_OBJ_HANDLE_P(obj) = handle;
103 obj_bucket = &EG(objects_store).object_buckets[handle];
104 if (!obj_bucket->bucket.obj.handlers) {
105 obj_bucket->bucket.obj.handlers = &std_object_handlers;
106 }
107 Z_OBJ_HT_P(obj) = obj_bucket->bucket.obj.handlers;
108 zval_copy_ctor(obj);
109
110 /* Make sure that destructors are protected from previously thrown exceptions.
111 * For example, if an exception was thrown in a function and when the function's
112 * local variable destruction results in a destructor being called.
113 */
114 old_exception = NULL;
115 if (EG(exception)) {
116 if (Z_OBJ_HANDLE_P(EG(exception)) == handle) {
117 zend_error(E_ERROR, "Attempt to destruct pending exception");
118 } else {
119 old_exception = EG(exception);
120 EG(exception) = NULL;
121 }
122 }
123 zend_call_method_with_0_params(&obj, object->ce, &destructor, ZEND_DESTRUCTOR_FUNC_NAME, NULL);
124 if (old_exception) {
125 if (EG(exception)) {
126 zend_exception_set_previous(EG(exception), old_exception TSRMLS_CC);
127 } else {
128 EG(exception) = old_exception;
129 }
130 }
131 zval_ptr_dtor(&obj);
132 }
133 }
134
zend_objects_free_object_storage(zend_object * object TSRMLS_DC)135 ZEND_API void zend_objects_free_object_storage(zend_object *object TSRMLS_DC)
136 {
137 zend_object_std_dtor(object TSRMLS_CC);
138 efree(object);
139 }
140
zend_objects_new(zend_object ** object,zend_class_entry * class_type TSRMLS_DC)141 ZEND_API zend_object_value zend_objects_new(zend_object **object, zend_class_entry *class_type TSRMLS_DC)
142 {
143 zend_object_value retval;
144
145 *object = emalloc(sizeof(zend_object));
146 (*object)->ce = class_type;
147 (*object)->properties = NULL;
148 (*object)->properties_table = NULL;
149 (*object)->guards = NULL;
150 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);
151 retval.handlers = &std_object_handlers;
152 return retval;
153 }
154
zend_objects_get_address(const zval * zobject TSRMLS_DC)155 ZEND_API zend_object *zend_objects_get_address(const zval *zobject TSRMLS_DC)
156 {
157 return (zend_object *)zend_object_store_get_object(zobject TSRMLS_CC);
158 }
159
zend_objects_clone_members(zend_object * new_object,zend_object_value new_obj_val,zend_object * old_object,zend_object_handle handle TSRMLS_DC)160 ZEND_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)
161 {
162 int i;
163
164 if (old_object->properties_table) {
165 if (!new_object->properties_table) {
166 new_object->properties_table = emalloc(sizeof(zval*) * old_object->ce->default_properties_count);
167 memset(new_object->properties_table, 0, sizeof(zval*) * old_object->ce->default_properties_count);
168 }
169 for (i = 0; i < old_object->ce->default_properties_count; i++) {
170 if (!new_object->properties) {
171 if (new_object->properties_table[i]) {
172 zval_ptr_dtor(&new_object->properties_table[i]);
173 }
174 }
175 if (!old_object->properties) {
176 new_object->properties_table[i] = old_object->properties_table[i];
177 if (new_object->properties_table[i]) {
178 Z_ADDREF_P(new_object->properties_table[i]);
179 }
180 }
181 }
182 }
183 if (old_object->properties) {
184 if (!new_object->properties) {
185 ALLOC_HASHTABLE(new_object->properties);
186 zend_hash_init(new_object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
187 }
188 zend_hash_copy(new_object->properties, old_object->properties, (copy_ctor_func_t) zval_add_ref, (void *) NULL /* Not used anymore */, sizeof(zval *));
189 if (old_object->properties_table) {
190 HashPosition pos;
191 zend_property_info *prop_info;
192 for (zend_hash_internal_pointer_reset_ex(&old_object->ce->properties_info, &pos);
193 zend_hash_get_current_data_ex(&old_object->ce->properties_info, (void**)&prop_info, &pos) == SUCCESS;
194 zend_hash_move_forward_ex(&old_object->ce->properties_info, &pos)) {
195 if ((prop_info->flags & ZEND_ACC_STATIC) == 0) {
196 if (zend_hash_quick_find(new_object->properties, prop_info->name, prop_info->name_length+1, prop_info->h, (void**)&new_object->properties_table[prop_info->offset]) == FAILURE) {
197 new_object->properties_table[prop_info->offset] = NULL;
198 }
199 }
200 }
201 }
202 }
203
204 if (old_object->ce->clone) {
205 zval *new_obj;
206
207 MAKE_STD_ZVAL(new_obj);
208 new_obj->type = IS_OBJECT;
209 new_obj->value.obj = new_obj_val;
210 zval_copy_ctor(new_obj);
211
212 zend_call_method_with_0_params(&new_obj, old_object->ce, &old_object->ce->clone, ZEND_CLONE_FUNC_NAME, NULL);
213
214 zval_ptr_dtor(&new_obj);
215 }
216 }
217
zend_objects_clone_obj(zval * zobject TSRMLS_DC)218 ZEND_API zend_object_value zend_objects_clone_obj(zval *zobject TSRMLS_DC)
219 {
220 zend_object_value new_obj_val;
221 zend_object *old_object;
222 zend_object *new_object;
223 zend_object_handle handle = Z_OBJ_HANDLE_P(zobject);
224
225 /* assume that create isn't overwritten, so when clone depends on the
226 * overwritten one then it must itself be overwritten */
227 old_object = zend_objects_get_address(zobject TSRMLS_CC);
228 new_obj_val = zend_objects_new(&new_object, old_object->ce TSRMLS_CC);
229
230 zend_objects_clone_members(new_object, new_obj_val, old_object, handle TSRMLS_CC);
231
232 return new_obj_val;
233 }
234
235 /*
236 * Local variables:
237 * tab-width: 4
238 * c-basic-offset: 4
239 * indent-tabs-mode: t
240 * End:
241 */
242
