1 : /*
2 : +----------------------------------------------------------------------+
3 : | PHP Version 5 |
4 : +----------------------------------------------------------------------+
5 : | Copyright (c) 1997-2007 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 :
20 : /* $Id: incomplete_class.c,v 1.28.2.2.2.2 2007/02/01 14:07:43 tony2001 Exp $ */
21 :
22 : #include "php.h"
23 : #include "basic_functions.h"
24 : #include "php_incomplete_class.h"
25 :
26 : #define INCOMPLETE_CLASS_MSG \
27 : "The script tried to execute a method or " \
28 : "access a property of an incomplete object. " \
29 : "Please ensure that the class definition \"%s\" of the object " \
30 : "you are trying to operate on was loaded _before_ " \
31 : "unserialize() gets called or provide a __autoload() function " \
32 : "to load the class definition "
33 :
34 :
35 : static zend_object_handlers php_incomplete_object_handlers;
36 :
37 : /* {{{ incomplete_class_message
38 : */
39 : static void incomplete_class_message(zval *object, int error_type TSRMLS_DC)
40 0 : {
41 : char *class_name;
42 0 : zend_bool class_name_alloced = 1;
43 :
44 0 : class_name = php_lookup_class_name(object, NULL);
45 :
46 0 : if (!class_name) {
47 0 : class_name_alloced = 0;
48 0 : class_name = "unknown";
49 : }
50 :
51 0 : php_error_docref(NULL TSRMLS_CC, error_type, INCOMPLETE_CLASS_MSG, class_name);
52 :
53 0 : if (class_name_alloced) {
54 0 : efree(class_name);
55 : }
56 0 : }
57 : /* }}} */
58 :
59 : static zval *incomplete_class_get_property(zval *object, zval *member, int type TSRMLS_DC)
60 0 : {
61 0 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
62 0 : if(type == BP_VAR_W || type == BP_VAR_RW) {
63 0 : return EG(error_zval_ptr);
64 : } else {
65 0 : return EG(uninitialized_zval_ptr);
66 : }
67 : }
68 :
69 : static void incomplete_class_write_property(zval *object, zval *member, zval *value TSRMLS_DC)
70 0 : {
71 0 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
72 0 : }
73 :
74 : static zval **incomplete_class_get_property_ptr_ptr(zval *object, zval *member TSRMLS_DC)
75 0 : {
76 0 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
77 0 : return &EG(error_zval_ptr);
78 : }
79 :
80 : static void incomplete_class_unset_property(zval *object, zval *member TSRMLS_DC)
81 0 : {
82 0 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
83 0 : }
84 :
85 : static int incomplete_class_has_property(zval *object, zval *member, int check_empty TSRMLS_DC)
86 0 : {
87 0 : incomplete_class_message(object, E_NOTICE TSRMLS_CC);
88 0 : return 0;
89 : }
90 :
91 0 : static union _zend_function *incomplete_class_get_method(zval **object, char *method, int method_len TSRMLS_DC) {
92 0 : incomplete_class_message(*object, E_ERROR TSRMLS_CC);
93 0 : return NULL;
94 : }
95 :
96 : /* {{{ php_create_incomplete_class
97 : */
98 0 : static zend_object_value php_create_incomplete_object(zend_class_entry *class_type TSRMLS_DC) {
99 : zend_object *object;
100 : zend_object_value value;
101 :
102 0 : value = zend_objects_new(&object, class_type TSRMLS_CC);
103 0 : value.handlers = &php_incomplete_object_handlers;
104 :
105 0 : ALLOC_HASHTABLE(object->properties);
106 0 : zend_hash_init(object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
107 0 : return value;
108 : }
109 :
110 : zend_class_entry *php_create_incomplete_class(TSRMLS_D)
111 220 : {
112 : zend_class_entry incomplete_class;
113 :
114 220 : INIT_CLASS_ENTRY(incomplete_class, INCOMPLETE_CLASS, NULL);
115 220 : incomplete_class.create_object = php_create_incomplete_object;
116 :
117 220 : memcpy(&php_incomplete_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
118 220 : php_incomplete_object_handlers.read_property = incomplete_class_get_property;
119 220 : php_incomplete_object_handlers.has_property = incomplete_class_has_property;
120 220 : php_incomplete_object_handlers.unset_property = incomplete_class_unset_property;
121 220 : php_incomplete_object_handlers.write_property = incomplete_class_write_property;
122 220 : php_incomplete_object_handlers.get_property_ptr_ptr = incomplete_class_get_property_ptr_ptr;
123 220 : php_incomplete_object_handlers.get_method = incomplete_class_get_method;
124 :
125 220 : return zend_register_internal_class(&incomplete_class TSRMLS_CC);
126 : }
127 : /* }}} */
128 :
129 : /* {{{ php_lookup_class_name
130 : */
131 : PHPAPI char *php_lookup_class_name(zval *object, zend_uint *nlen)
132 0 : {
133 : zval **val;
134 0 : char *retval = NULL;
135 : HashTable *object_properties;
136 : TSRMLS_FETCH();
137 :
138 0 : object_properties = Z_OBJPROP_P(object);
139 :
140 0 : if (zend_hash_find(object_properties, MAGIC_MEMBER, sizeof(MAGIC_MEMBER), (void **) &val) == SUCCESS) {
141 0 : retval = estrndup(Z_STRVAL_PP(val), Z_STRLEN_PP(val));
142 :
143 0 : if (nlen)
144 0 : *nlen = Z_STRLEN_PP(val);
145 : }
146 :
147 0 : return (retval);
148 : }
149 : /* }}} */
150 :
151 : /* {{{ php_store_class_name
152 : */
153 : PHPAPI void php_store_class_name(zval *object, const char *name, zend_uint len)
154 0 : {
155 : zval *val;
156 : TSRMLS_FETCH();
157 :
158 0 : MAKE_STD_ZVAL(val);
159 :
160 0 : Z_TYPE_P(val) = IS_STRING;
161 0 : Z_STRVAL_P(val) = estrndup(name, len);
162 0 : Z_STRLEN_P(val) = len;
163 :
164 0 : zend_hash_update(Z_OBJPROP_P(object), MAGIC_MEMBER, sizeof(MAGIC_MEMBER), &val, sizeof(val), NULL);
165 0 : }
166 : /* }}} */
167 :
168 : /*
169 : * Local variables:
170 : * tab-width: 4
171 : * c-basic-offset: 4
172 : * End:
173 : * vim600: sw=4 ts=4 fdm=marker
174 : * vim<600: sw=4 ts=4
175 : */
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