1 : /*
2 : +----------------------------------------------------------------------+
3 : | PHP Version 5 |
4 : +----------------------------------------------------------------------+
5 : | Copyright (c) 1997-2009 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: incomplete_class.c 272370 2008-12-31 11:15:49Z sebastian $ */
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 : */
37 : static void incomplete_class_message(zval *object, int error_type TSRMLS_DC)
38 15 : {
39 : char *class_name;
40 15 : zend_bool class_name_alloced = 1;
41 :
42 15 : class_name = php_lookup_class_name(object, NULL);
43 :
44 15 : if (!class_name) {
45 4 : class_name_alloced = 0;
46 4 : class_name = "unknown";
47 : }
48 :
49 15 : php_error_docref(NULL TSRMLS_CC, error_type, INCOMPLETE_CLASS_MSG, class_name);
50 :
51 14 : if (class_name_alloced) {
52 10 : efree(class_name);
53 : }
54 14 : }
55 : /* }}} */
56 :
57 : static zval *incomplete_class_get_property(zval *object, zval *member, int type TSRMLS_DC) /* {{{ */
58 7 : {
59 7 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
60 :
61 7 : if (type == BP_VAR_W || type == BP_VAR_RW) {
62 0 : return EG(error_zval_ptr);
63 : } else {
64 7 : return EG(uninitialized_zval_ptr);
65 : }
66 : }
67 : /* }}} */
68 :
69 : static void incomplete_class_write_property(zval *object, zval *member, zval *value TSRMLS_DC) /* {{{ */
70 3 : {
71 3 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
72 3 : }
73 : /* }}} */
74 :
75 : static zval **incomplete_class_get_property_ptr_ptr(zval *object, zval *member TSRMLS_DC) /* {{{ */
76 1 : {
77 1 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
78 1 : return &EG(error_zval_ptr);
79 : }
80 : /* }}} */
81 :
82 : static void incomplete_class_unset_property(zval *object, zval *member TSRMLS_DC) /* {{{ */
83 1 : {
84 1 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
85 1 : }
86 : /* }}} */
87 :
88 : static int incomplete_class_has_property(zval *object, zval *member, int check_empty TSRMLS_DC) /* {{{ */
89 2 : {
90 2 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
91 2 : return 0;
92 : }
93 : /* }}} */
94 :
95 : static union _zend_function *incomplete_class_get_method(zval **object, char *method, int method_len TSRMLS_DC) /* {{{ */
96 1 : {
97 1 : incomplete_class_message(*object, E_ERROR TSRMLS_CC);
98 0 : return NULL;
99 : }
100 : /* }}} */
101 :
102 : /* {{{ php_create_incomplete_class
103 : */
104 : static zend_object_value php_create_incomplete_object(zend_class_entry *class_type TSRMLS_DC)
105 17 : {
106 : zend_object *object;
107 : zend_object_value value;
108 :
109 17 : value = zend_objects_new(&object, class_type TSRMLS_CC);
110 17 : value.handlers = &php_incomplete_object_handlers;
111 :
112 17 : ALLOC_HASHTABLE(object->properties);
113 17 : zend_hash_init(object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
114 17 : return value;
115 : }
116 :
117 : PHPAPI zend_class_entry *php_create_incomplete_class(TSRMLS_D)
118 17633 : {
119 : zend_class_entry incomplete_class;
120 :
121 17633 : INIT_CLASS_ENTRY(incomplete_class, INCOMPLETE_CLASS, NULL);
122 17633 : incomplete_class.create_object = php_create_incomplete_object;
123 :
124 17633 : memcpy(&php_incomplete_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
125 17633 : php_incomplete_object_handlers.read_property = incomplete_class_get_property;
126 17633 : php_incomplete_object_handlers.has_property = incomplete_class_has_property;
127 17633 : php_incomplete_object_handlers.unset_property = incomplete_class_unset_property;
128 17633 : php_incomplete_object_handlers.write_property = incomplete_class_write_property;
129 17633 : php_incomplete_object_handlers.get_property_ptr_ptr = incomplete_class_get_property_ptr_ptr;
130 17633 : php_incomplete_object_handlers.get_method = incomplete_class_get_method;
131 :
132 17633 : return zend_register_internal_class(&incomplete_class TSRMLS_CC);
133 : }
134 : /* }}} */
135 :
136 : /* {{{ php_lookup_class_name
137 : */
138 : PHPAPI char *php_lookup_class_name(zval *object, zend_uint *nlen)
139 18 : {
140 : zval **val;
141 18 : char *retval = NULL;
142 : HashTable *object_properties;
143 : TSRMLS_FETCH();
144 :
145 18 : object_properties = Z_OBJPROP_P(object);
146 :
147 18 : if (zend_hash_find(object_properties, MAGIC_MEMBER, sizeof(MAGIC_MEMBER), (void **) &val) == SUCCESS) {
148 13 : retval = estrndup(Z_STRVAL_PP(val), Z_STRLEN_PP(val));
149 :
150 13 : if (nlen) {
151 2 : *nlen = Z_STRLEN_PP(val);
152 : }
153 : }
154 :
155 18 : return retval;
156 : }
157 : /* }}} */
158 :
159 : /* {{{ php_store_class_name
160 : */
161 : PHPAPI void php_store_class_name(zval *object, const char *name, zend_uint len)
162 14 : {
163 : zval *val;
164 : TSRMLS_FETCH();
165 :
166 14 : MAKE_STD_ZVAL(val);
167 :
168 14 : Z_TYPE_P(val) = IS_STRING;
169 14 : Z_STRVAL_P(val) = estrndup(name, len);
170 14 : Z_STRLEN_P(val) = len;
171 :
172 14 : zend_hash_update(Z_OBJPROP_P(object), MAGIC_MEMBER, sizeof(MAGIC_MEMBER), &val, sizeof(val), NULL);
173 14 : }
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 : */
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