/src/php-src/ext/standard/incomplete_class.c
Line | Count | Source |
1 | | /* |
2 | | +----------------------------------------------------------------------+ |
3 | | | Copyright © The PHP Group and Contributors. | |
4 | | +----------------------------------------------------------------------+ |
5 | | | This source file is subject to the Modified BSD License that is | |
6 | | | bundled with this package in the file LICENSE, and is available | |
7 | | | through the World Wide Web at <https://www.php.net/license/>. | |
8 | | | | |
9 | | | SPDX-License-Identifier: BSD-3-Clause | |
10 | | +----------------------------------------------------------------------+ |
11 | | | Author: Sascha Schumann <sascha@schumann.cx> | |
12 | | +----------------------------------------------------------------------+ |
13 | | */ |
14 | | |
15 | | #include "php.h" |
16 | | #include "basic_functions.h" |
17 | | #include "php_incomplete_class.h" |
18 | | |
19 | | #define INCOMPLETE_CLASS_MSG \ |
20 | 30 | "The script tried to %s on an incomplete object. " \ |
21 | 30 | "Please ensure that the class definition \"%s\" of the object " \ |
22 | 30 | "you are trying to operate on was loaded _before_ " \ |
23 | 30 | "unserialize() gets called or provide an autoloader " \ |
24 | 30 | "to load the class definition" |
25 | | |
26 | | PHPAPI zend_class_entry *php_ce_incomplete_class; |
27 | | static zend_object_handlers php_incomplete_object_handlers; |
28 | | |
29 | | static void incomplete_class_message(zend_object *object) |
30 | 0 | { |
31 | 0 | zend_string *class_name = php_lookup_class_name(object); |
32 | 0 | php_error_docref(NULL, E_WARNING, INCOMPLETE_CLASS_MSG, |
33 | 0 | "access a property", class_name ? ZSTR_VAL(class_name) : "unknown"); |
34 | 0 | if (class_name) { |
35 | 0 | zend_string_release_ex(class_name, 0); |
36 | 0 | } |
37 | 0 | } |
38 | | |
39 | | static void throw_incomplete_class_error(zend_object *object, const char *what) |
40 | 30 | { |
41 | 30 | zend_string *class_name = php_lookup_class_name(object); |
42 | 30 | zend_throw_error(NULL, INCOMPLETE_CLASS_MSG, |
43 | 30 | what, class_name ? ZSTR_VAL(class_name) : "unknown"); |
44 | 30 | if (class_name) { |
45 | 30 | zend_string_release_ex(class_name, 0); |
46 | 30 | } |
47 | 30 | } |
48 | | |
49 | | static zval *incomplete_class_get_property(zend_object *object, zend_string *member, int type, void **cache_slot, zval *rv) /* {{{ */ |
50 | 0 | { |
51 | 0 | incomplete_class_message(object); |
52 | |
|
53 | 0 | if (type == BP_VAR_W || type == BP_VAR_RW) { |
54 | 0 | ZVAL_ERROR(rv); |
55 | 0 | return rv; |
56 | 0 | } else { |
57 | 0 | return &EG(uninitialized_zval); |
58 | 0 | } |
59 | 0 | } |
60 | | /* }}} */ |
61 | | |
62 | | static zval *incomplete_class_write_property(zend_object *object, zend_string *member, zval *value, void **cache_slot) /* {{{ */ |
63 | 0 | { |
64 | 0 | throw_incomplete_class_error(object, "modify a property"); |
65 | 0 | return value; |
66 | 0 | } |
67 | | /* }}} */ |
68 | | |
69 | | static zval *incomplete_class_get_property_ptr_ptr(zend_object *object, zend_string *member, int type, void **cache_slot) /* {{{ */ |
70 | 30 | { |
71 | 30 | throw_incomplete_class_error(object, "modify a property"); |
72 | 30 | return &EG(error_zval); |
73 | 30 | } |
74 | | /* }}} */ |
75 | | |
76 | | static void incomplete_class_unset_property(zend_object *object, zend_string *member, void **cache_slot) /* {{{ */ |
77 | 0 | { |
78 | 0 | throw_incomplete_class_error(object, "modify a property"); |
79 | 0 | } |
80 | | /* }}} */ |
81 | | |
82 | | static int incomplete_class_has_property(zend_object *object, zend_string *member, int check_empty, void **cache_slot) /* {{{ */ |
83 | 0 | { |
84 | 0 | incomplete_class_message(object); |
85 | 0 | return 0; |
86 | 0 | } |
87 | | /* }}} */ |
88 | | |
89 | | static zend_function *incomplete_class_get_method(zend_object **object, zend_string *method, const zval *key) /* {{{ */ |
90 | 0 | { |
91 | 0 | throw_incomplete_class_error(*object, "call a method"); |
92 | 0 | return NULL; |
93 | 0 | } |
94 | | /* }}} */ |
95 | | |
96 | | /* {{{ php_create_incomplete_class */ |
97 | | static zend_object *php_create_incomplete_object(zend_class_entry *class_type) |
98 | 35 | { |
99 | 35 | zend_object *object; |
100 | | |
101 | 35 | object = zend_objects_new( class_type); |
102 | 35 | object->handlers = &php_incomplete_object_handlers; |
103 | | |
104 | 35 | object_properties_init(object, class_type); |
105 | | |
106 | 35 | return object; |
107 | 35 | } |
108 | | |
109 | | PHPAPI void php_register_incomplete_class_handlers(void) |
110 | 2 | { |
111 | 2 | memcpy(&php_incomplete_object_handlers, &std_object_handlers, sizeof(zend_object_handlers)); |
112 | 2 | php_incomplete_object_handlers.read_property = incomplete_class_get_property; |
113 | 2 | php_incomplete_object_handlers.has_property = incomplete_class_has_property; |
114 | 2 | php_incomplete_object_handlers.unset_property = incomplete_class_unset_property; |
115 | 2 | php_incomplete_object_handlers.write_property = incomplete_class_write_property; |
116 | 2 | php_incomplete_object_handlers.get_property_ptr_ptr = incomplete_class_get_property_ptr_ptr; |
117 | 2 | php_incomplete_object_handlers.get_method = incomplete_class_get_method; |
118 | | |
119 | 2 | php_ce_incomplete_class->create_object = php_create_incomplete_object; |
120 | 2 | } |
121 | | /* }}} */ |
122 | | |
123 | | /* {{{ php_lookup_class_name */ |
124 | | PHPAPI zend_string *php_lookup_class_name(zend_object *object) |
125 | 30 | { |
126 | 30 | if (object->properties) { |
127 | 30 | zval *val = zend_hash_str_find(object->properties, MAGIC_MEMBER, sizeof(MAGIC_MEMBER)-1); |
128 | | |
129 | 30 | if (val != NULL && Z_TYPE_P(val) == IS_STRING) { |
130 | 30 | return zend_string_copy(Z_STR_P(val)); |
131 | 30 | } |
132 | 30 | } |
133 | | |
134 | 0 | return NULL; |
135 | 30 | } |
136 | | /* }}} */ |
137 | | |
138 | | /* {{{ php_store_class_name */ |
139 | | PHPAPI void php_store_class_name(zval *object, zend_string *name) |
140 | 33 | { |
141 | 33 | zval val; |
142 | | |
143 | 33 | ZVAL_STR_COPY(&val, name); |
144 | 33 | zend_hash_str_update(Z_OBJPROP_P(object), MAGIC_MEMBER, sizeof(MAGIC_MEMBER)-1, &val); |
145 | 33 | } |
146 | | /* }}} */ |