1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 5 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2013 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP 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.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Author: Sascha Schumann <sascha@schumann.cx> |
16 +----------------------------------------------------------------------+
17 */
18
19 /* $Id$ */
20
21 #include "php.h"
22 #include "basic_functions.h"
23 #include "php_incomplete_class.h"
24
25 #define INCOMPLETE_CLASS_MSG \
26 "The script tried to execute a method or " \
27 "access a property of an incomplete object. " \
28 "Please ensure that the class definition \"%s\" of the object " \
29 "you are trying to operate on was loaded _before_ " \
30 "unserialize() gets called or provide a __autoload() function " \
31 "to load the class definition "
32
33 static zend_object_handlers php_incomplete_object_handlers;
34
35 /* {{{ incomplete_class_message
36 */
incomplete_class_message(zval * object,int error_type TSRMLS_DC)37 static void incomplete_class_message(zval *object, int error_type TSRMLS_DC)
38 {
39 char *class_name;
40 zend_bool class_name_alloced = 1;
41
42 class_name = php_lookup_class_name(object, NULL);
43
44 if (!class_name) {
45 class_name_alloced = 0;
46 class_name = "unknown";
47 }
48
49 php_error_docref(NULL TSRMLS_CC, error_type, INCOMPLETE_CLASS_MSG, class_name);
50
51 if (class_name_alloced) {
52 efree(class_name);
53 }
54 }
55 /* }}} */
56
incomplete_class_get_property(zval * object,zval * member,int type TSRMLS_DC)57 static zval *incomplete_class_get_property(zval *object, zval *member, int type TSRMLS_DC) /* {{{ */
58 {
59 incomplete_class_message(object, E_NOTICE TSRMLS_CC);
60
61 if (type == BP_VAR_W || type == BP_VAR_RW) {
62 return EG(error_zval_ptr);
63 } else {
64 return EG(uninitialized_zval_ptr);
65 }
66 }
67 /* }}} */
68
incomplete_class_write_property(zval * object,zval * member,zval * value TSRMLS_DC)69 static void incomplete_class_write_property(zval *object, zval *member, zval *value TSRMLS_DC) /* {{{ */
70 {
71 incomplete_class_message(object, E_NOTICE TSRMLS_CC);
72 }
73 /* }}} */
74
incomplete_class_get_property_ptr_ptr(zval * object,zval * member TSRMLS_DC)75 static zval **incomplete_class_get_property_ptr_ptr(zval *object, zval *member TSRMLS_DC) /* {{{ */
76 {
77 incomplete_class_message(object, E_NOTICE TSRMLS_CC);
78 return &EG(error_zval_ptr);
79 }
80 /* }}} */
81
incomplete_class_unset_property(zval * object,zval * member TSRMLS_DC)82 static void incomplete_class_unset_property(zval *object, zval *member TSRMLS_DC) /* {{{ */
83 {
84 incomplete_class_message(object, E_NOTICE TSRMLS_CC);
85 }
86 /* }}} */
87
incomplete_class_has_property(zval * object,zval * member,int check_empty TSRMLS_DC)88 static int incomplete_class_has_property(zval *object, zval *member, int check_empty TSRMLS_DC) /* {{{ */
89 {
90 incomplete_class_message(object, E_NOTICE TSRMLS_CC);
91 return 0;
92 }
93 /* }}} */
94
incomplete_class_get_method(zval ** object,char * method,int method_len TSRMLS_DC)95 static union _zend_function *incomplete_class_get_method(zval **object, char *method, int method_len TSRMLS_DC) /* {{{ */
96 {
97 incomplete_class_message(*object, E_ERROR TSRMLS_CC);
98 return NULL;
99 }
100 /* }}} */
101
102 /* {{{ php_create_incomplete_class
103 */
php_create_incomplete_object(zend_class_entry * class_type TSRMLS_DC)104 static zend_object_value php_create_incomplete_object(zend_class_entry *class_type TSRMLS_DC)
105 {
106 zend_object *object;
107 zend_object_value value;
108
109 value = zend_objects_new(&object, class_type TSRMLS_CC);
110 value.handlers = &php_incomplete_object_handlers;
111
112 ALLOC_HASHTABLE(object->properties);
113 zend_hash_init(object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
114 return value;
115 }
116
php_create_incomplete_class(TSRMLS_D)117 PHPAPI zend_class_entry *php_create_incomplete_class(TSRMLS_D)
118 {
119 zend_class_entry incomplete_class;
120
121 INIT_CLASS_ENTRY(incomplete_class, INCOMPLETE_CLASS, NULL);
122 incomplete_class.create_object = php_create_incomplete_object;
123
124 memcpy(&php_incomplete_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
125 php_incomplete_object_handlers.read_property = incomplete_class_get_property;
126 php_incomplete_object_handlers.has_property = incomplete_class_has_property;
127 php_incomplete_object_handlers.unset_property = incomplete_class_unset_property;
128 php_incomplete_object_handlers.write_property = incomplete_class_write_property;
129 php_incomplete_object_handlers.get_property_ptr_ptr = incomplete_class_get_property_ptr_ptr;
130 php_incomplete_object_handlers.get_method = incomplete_class_get_method;
131
132 return zend_register_internal_class(&incomplete_class TSRMLS_CC);
133 }
134 /* }}} */
135
136 /* {{{ php_lookup_class_name
137 */
php_lookup_class_name(zval * object,zend_uint * nlen)138 PHPAPI char *php_lookup_class_name(zval *object, zend_uint *nlen)
139 {
140 zval **val;
141 char *retval = NULL;
142 HashTable *object_properties;
143 TSRMLS_FETCH();
144
145 object_properties = Z_OBJPROP_P(object);
146
147 if (zend_hash_find(object_properties, MAGIC_MEMBER, sizeof(MAGIC_MEMBER), (void **) &val) == SUCCESS) {
148 retval = estrndup(Z_STRVAL_PP(val), Z_STRLEN_PP(val));
149
150 if (nlen) {
151 *nlen = Z_STRLEN_PP(val);
152 }
153 }
154
155 return retval;
156 }
157 /* }}} */
158
159 /* {{{ php_store_class_name
160 */
php_store_class_name(zval * object,const char * name,zend_uint len)161 PHPAPI void php_store_class_name(zval *object, const char *name, zend_uint len)
162 {
163 zval *val;
164 TSRMLS_FETCH();
165
166 MAKE_STD_ZVAL(val);
167
168 Z_TYPE_P(val) = IS_STRING;
169 Z_STRVAL_P(val) = estrndup(name, len);
170 Z_STRLEN_P(val) = len;
171
172 zend_hash_update(Z_OBJPROP_P(object), MAGIC_MEMBER, sizeof(MAGIC_MEMBER), &val, sizeof(val), NULL);
173 }
174 /* }}} */
175
176 /*
177 * Local variables:
178 * tab-width: 4
179 * c-basic-offset: 4
180 * End:
181 * vim600: sw=4 ts=4 fdm=marker
182 * vim<600: sw=4 ts=4
183 */
184
