1 : /*
2 : +----------------------------------------------------------------------+
3 : | Zend Engine |
4 : +----------------------------------------------------------------------+
5 : | Copyright (c) 1998-2007 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: zend_objects.c,v 1.56.2.3.2.6 2007/01/01 09:35:47 sebastian Exp $ */
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 :
29 : ZEND_API void zend_object_std_init(zend_object *object, zend_class_entry *ce TSRMLS_DC)
30 0 : {
31 0 : ALLOC_HASHTABLE(object->properties);
32 0 : zend_hash_init(object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
33 :
34 0 : object->ce = ce;
35 0 : object->guards = NULL;
36 0 : }
37 :
38 : ZEND_API void zend_object_std_dtor(zend_object *object TSRMLS_DC)
39 91 : {
40 91 : if (object->guards) {
41 0 : zend_hash_destroy(object->guards);
42 0 : FREE_HASHTABLE(object->guards);
43 : }
44 91 : if (object->properties) {
45 91 : zend_hash_destroy(object->properties);
46 91 : FREE_HASHTABLE(object->properties);
47 : }
48 91 : }
49 :
50 : ZEND_API void zend_objects_destroy_object(zend_object *object, zend_object_handle handle TSRMLS_DC)
51 336 : {
52 336 : zend_function *destructor = object->ce->destructor;
53 :
54 336 : if (destructor) {
55 : zval *obj;
56 : zval *old_exception;
57 :
58 9 : if (destructor->op_array.fn_flags & (ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED)) {
59 0 : if (destructor->op_array.fn_flags & ZEND_ACC_PRIVATE) {
60 : /* Ensure that if we're calling a private function, we're allowed to do so.
61 : */
62 0 : if (object->ce != EG(scope)) {
63 0 : zend_class_entry *ce = object->ce;
64 :
65 0 : zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
66 : "Call to private %s::__destruct() from context '%s'%s",
67 : ce->name,
68 : EG(scope) ? EG(scope)->name : "",
69 : EG(in_execution) ? "" : " during shutdown ignored");
70 0 : return;
71 : }
72 : } else {
73 : /* Ensure that if we're calling a protected function, we're allowed to do so.
74 : */
75 0 : if (!zend_check_protected(destructor->common.scope, EG(scope))) {
76 0 : zend_class_entry *ce = object->ce;
77 :
78 0 : zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
79 : "Call to protected %s::__destruct() from context '%s'%s",
80 : ce->name,
81 : EG(scope) ? EG(scope)->name : "",
82 : EG(in_execution) ? "" : " during shutdown ignored");
83 0 : return;
84 : }
85 : }
86 : }
87 :
88 9 : MAKE_STD_ZVAL(obj);
89 9 : Z_TYPE_P(obj) = IS_OBJECT;
90 9 : Z_OBJ_HANDLE_P(obj) = handle;
91 : /* TODO: We cannot set proper handlers. */
92 9 : Z_OBJ_HT_P(obj) = &std_object_handlers;
93 9 : zval_copy_ctor(obj);
94 :
95 : /* Make sure that destructors are protected from previously thrown exceptions.
96 : * For example, if an exception was thrown in a function and when the function's
97 : * local variable destruction results in a destructor being called.
98 : */
99 9 : old_exception = EG(exception);
100 9 : EG(exception) = NULL;
101 9 : zend_call_method_with_0_params(&obj, object->ce, &destructor, ZEND_DESTRUCTOR_FUNC_NAME, NULL);
102 9 : if (old_exception) {
103 0 : if (EG(exception)) {
104 0 : zend_class_entry *default_exception_ce = zend_exception_get_default(TSRMLS_C);
105 0 : zval *file = zend_read_property(default_exception_ce, old_exception, "file", sizeof("file")-1, 1 TSRMLS_CC);
106 0 : zval *line = zend_read_property(default_exception_ce, old_exception, "line", sizeof("line")-1, 1 TSRMLS_CC);
107 :
108 0 : zval_ptr_dtor(&obj);
109 0 : zval_ptr_dtor(&EG(exception));
110 0 : EG(exception) = old_exception;
111 0 : zend_error(E_ERROR, "Ignoring exception from %s::__destruct() while an exception is already active (Uncaught %s in %s on line %ld)",
112 : object->ce->name, Z_OBJCE_P(old_exception)->name, Z_STRVAL_P(file), Z_LVAL_P(line));
113 : }
114 0 : EG(exception) = old_exception;
115 : }
116 9 : zval_ptr_dtor(&obj);
117 : }
118 : }
119 :
120 : ZEND_API void zend_objects_free_object_storage(zend_object *object TSRMLS_DC)
121 91 : {
122 91 : zend_object_std_dtor(object TSRMLS_CC);
123 91 : efree(object);
124 91 : }
125 :
126 : ZEND_API zend_object_value zend_objects_new(zend_object **object, zend_class_entry *class_type TSRMLS_DC)
127 91 : {
128 : zend_object_value retval;
129 :
130 91 : *object = emalloc(sizeof(zend_object));
131 91 : (*object)->ce = class_type;
132 91 : 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);
133 91 : retval.handlers = &std_object_handlers;
134 91 : (*object)->guards = NULL;
135 91 : return retval;
136 : }
137 :
138 : ZEND_API zend_object *zend_objects_get_address(zval *zobject TSRMLS_DC)
139 4481 : {
140 4481 : return (zend_object *)zend_object_store_get_object(zobject TSRMLS_CC);
141 : }
142 :
143 : static void zval_add_ref_or_clone(zval **p)
144 0 : {
145 0 : if (Z_TYPE_PP(p) == IS_OBJECT && !PZVAL_IS_REF(*p)) {
146 : TSRMLS_FETCH();
147 :
148 0 : if (Z_OBJ_HANDLER_PP(p, clone_obj) == NULL) {
149 0 : zend_error(E_ERROR, "Trying to clone an uncloneable object of class %s", Z_OBJCE_PP(p)->name);
150 : } else {
151 0 : zval *orig = *p;
152 :
153 0 : ALLOC_ZVAL(*p);
154 0 : **p = *orig;
155 0 : INIT_PZVAL(*p);
156 0 : (*p)->value.obj = Z_OBJ_HT_PP(p)->clone_obj(orig TSRMLS_CC);
157 : }
158 : } else {
159 0 : (*p)->refcount++;
160 : }
161 0 : }
162 :
163 : 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)
164 1 : {
165 1 : if (EG(ze1_compatibility_mode)) {
166 0 : zend_hash_copy(new_object->properties, old_object->properties, (copy_ctor_func_t) zval_add_ref_or_clone, (void *) NULL /* Not used anymore */, sizeof(zval *));
167 : } else {
168 1 : zend_hash_copy(new_object->properties, old_object->properties, (copy_ctor_func_t) zval_add_ref, (void *) NULL /* Not used anymore */, sizeof(zval *));
169 : }
170 1 : if (old_object->ce->clone) {
171 : zval *new_obj;
172 :
173 0 : MAKE_STD_ZVAL(new_obj);
174 0 : new_obj->type = IS_OBJECT;
175 0 : new_obj->value.obj = new_obj_val;
176 0 : zval_copy_ctor(new_obj);
177 :
178 0 : zend_call_method_with_0_params(&new_obj, old_object->ce, &old_object->ce->clone, ZEND_CLONE_FUNC_NAME, NULL);
179 :
180 0 : zval_ptr_dtor(&new_obj);
181 : }
182 1 : }
183 :
184 : ZEND_API zend_object_value zend_objects_clone_obj(zval *zobject TSRMLS_DC)
185 0 : {
186 : zend_object_value new_obj_val;
187 : zend_object *old_object;
188 : zend_object *new_object;
189 0 : zend_object_handle handle = Z_OBJ_HANDLE_P(zobject);
190 :
191 : /* assume that create isn't overwritten, so when clone depends on the
192 : * overwritten one then it must itself be overwritten */
193 0 : old_object = zend_objects_get_address(zobject TSRMLS_CC);
194 0 : new_obj_val = zend_objects_new(&new_object, old_object->ce TSRMLS_CC);
195 :
196 0 : ALLOC_HASHTABLE(new_object->properties);
197 0 : zend_hash_init(new_object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
198 :
199 0 : zend_objects_clone_members(new_object, new_obj_val, old_object, handle TSRMLS_CC);
200 :
201 0 : return new_obj_val;
202 : }
203 :
204 : /*
205 : * Local variables:
206 : * tab-width: 4
207 : * c-basic-offset: 4
208 : * indent-tabs-mode: t
209 : * End:
210 : */
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