1 : /*
2 : +----------------------------------------------------------------------+
3 : | PHP Version 6 |
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 281094 2009-05-25 14:32:15Z felipe $ */
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 : zstr class_name;
40 15 : zend_bool class_name_alloced = 1;
41 :
42 15 : class_name = php_lookup_class_name(object, NULL);
43 :
44 : /* FIXME: Unicode support??? */
45 15 : if (!class_name.s) {
46 4 : class_name_alloced = 0;
47 4 : class_name.s = "unknown";
48 : }
49 :
50 15 : php_error_docref(NULL TSRMLS_CC, error_type, INCOMPLETE_CLASS_MSG, class_name);
51 :
52 14 : if (class_name_alloced) {
53 10 : efree(class_name.v);
54 : }
55 14 : }
56 : /* }}} */
57 :
58 : static zval *incomplete_class_get_property(zval *object, zval *member, int type TSRMLS_DC) /* {{{ */
59 7 : {
60 7 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
61 :
62 7 : if (type == BP_VAR_W || type == BP_VAR_RW) {
63 0 : return EG(error_zval_ptr);
64 : } else {
65 7 : return EG(uninitialized_zval_ptr);
66 : }
67 : }
68 : /* }}} */
69 :
70 : static void incomplete_class_write_property(zval *object, zval *member, zval *value TSRMLS_DC) /* {{{ */
71 3 : {
72 3 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
73 3 : }
74 : /* }}} */
75 :
76 : static zval **incomplete_class_get_property_ptr_ptr(zval *object, zval *member TSRMLS_DC) /* {{{ */
77 1 : {
78 1 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
79 1 : return &EG(error_zval_ptr);
80 : }
81 : /* }}} */
82 :
83 : static void incomplete_class_unset_property(zval *object, zval *member TSRMLS_DC) /* {{{ */
84 1 : {
85 1 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
86 1 : }
87 : /* }}} */
88 :
89 : static int incomplete_class_has_property(zval *object, zval *member, int check_empty TSRMLS_DC) /* {{{ */
90 2 : {
91 2 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
92 2 : return 0;
93 : }
94 : /* }}} */
95 :
96 : static union _zend_function *incomplete_class_get_method(zval **object, zstr method, int method_len TSRMLS_DC) /* {{{ */
97 1 : {
98 1 : incomplete_class_message(*object, E_ERROR TSRMLS_CC);
99 0 : return NULL;
100 : }
101 : /* }}} */
102 :
103 : /* {{{ php_create_incomplete_class
104 : */
105 : static zend_object_value php_create_incomplete_object(zend_class_entry *class_type TSRMLS_DC)
106 15 : {
107 : zend_object *object;
108 : zend_object_value value;
109 :
110 15 : value = zend_objects_new(&object, class_type TSRMLS_CC);
111 15 : value.handlers = &php_incomplete_object_handlers;
112 :
113 15 : ALLOC_HASHTABLE(object->properties);
114 15 : zend_u_hash_init(object->properties, 0, NULL, ZVAL_PTR_DTOR, 0, UG(unicode));
115 15 : return value;
116 : }
117 :
118 : PHPAPI zend_class_entry *php_create_incomplete_class(TSRMLS_D)
119 17007 : {
120 : zend_class_entry incomplete_class;
121 :
122 17007 : INIT_CLASS_ENTRY(incomplete_class, INCOMPLETE_CLASS, NULL);
123 17007 : incomplete_class.create_object = php_create_incomplete_object;
124 :
125 17007 : memcpy(&php_incomplete_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
126 17007 : php_incomplete_object_handlers.read_property = incomplete_class_get_property;
127 17007 : php_incomplete_object_handlers.has_property = incomplete_class_has_property;
128 17007 : php_incomplete_object_handlers.unset_property = incomplete_class_unset_property;
129 17007 : php_incomplete_object_handlers.write_property = incomplete_class_write_property;
130 17007 : php_incomplete_object_handlers.get_property_ptr_ptr = incomplete_class_get_property_ptr_ptr;
131 17007 : php_incomplete_object_handlers.get_method = incomplete_class_get_method;
132 :
133 17007 : return zend_register_internal_class(&incomplete_class TSRMLS_CC);
134 : }
135 : /* }}} */
136 :
137 : /* {{{ php_lookup_class_name
138 : */
139 : PHPAPI zstr php_lookup_class_name(zval *object, zend_uint *nlen)
140 18 : {
141 : zval **val;
142 18 : zstr retval = NULL_ZSTR;
143 : HashTable *object_properties;
144 : TSRMLS_FETCH();
145 :
146 18 : object_properties = Z_OBJPROP_P(object);
147 :
148 18 : if (zend_hash_find(object_properties, MAGIC_MEMBER, sizeof(MAGIC_MEMBER), (void **) &val) == SUCCESS) {
149 13 : retval.u = eustrndup(Z_USTRVAL_PP(val), Z_USTRLEN_PP(val));
150 :
151 13 : if (nlen) {
152 2 : *nlen = Z_UNILEN_PP(val);
153 : }
154 : }
155 :
156 18 : return retval;
157 : }
158 : /* }}} */
159 :
160 : /* {{{ php_store_class_name
161 : */
162 : PHPAPI void php_store_class_name(zval *object, zstr name, zend_uint len)
163 12 : {
164 : zval *val;
165 : TSRMLS_FETCH();
166 :
167 12 : MAKE_STD_ZVAL(val);
168 12 : ZVAL_UNICODEL(val, name.u, len, 1);
169 :
170 12 : zend_hash_update(Z_OBJPROP_P(object), MAGIC_MEMBER, sizeof(MAGIC_MEMBER), &val, sizeof(val), NULL);
171 12 : }
172 : /* }}} */
173 :
174 : /*
175 : * Local variables:
176 : * tab-width: 4
177 : * c-basic-offset: 4
178 : * End:
179 : * vim600: sw=4 ts=4 fdm=marker
180 : * vim<600: sw=4 ts=4
181 : */
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