root/ext/standard/incomplete_class.c

DEFINITIONS

1. incomplete_class_message
2. incomplete_class_get_property
3. incomplete_class_write_property
4. incomplete_class_get_property_ptr_ptr
5. incomplete_class_unset_property
6. incomplete_class_has_property
7. incomplete_class_get_method
8. php_create_incomplete_object
9. php_create_incomplete_class
10. php_lookup_class_name
11. php_store_class_name

   1 /*
   2    +----------------------------------------------------------------------+
   3    | PHP Version 7                                                        |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 1997-2016 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  */
  37 static void incomplete_class_message(zval *object, int error_type)
  38 {
  39         zend_string *class_name;
  40 
  41         class_name = php_lookup_class_name(object);
  42 
  43         if (class_name) {
  44                 php_error_docref(NULL, error_type, INCOMPLETE_CLASS_MSG, ZSTR_VAL(class_name));
  45                 zend_string_release(class_name);
  46         } else {
  47                 php_error_docref(NULL, error_type, INCOMPLETE_CLASS_MSG, "unknown");
  48         }
  49 }
  50 /* }}} */
  51 
  52 static zval *incomplete_class_get_property(zval *object, zval *member, int type, void **cache_slot, zval *rv) /* {{{ */
  53 {
  54         incomplete_class_message(object, E_NOTICE);
  55 
  56         if (type == BP_VAR_W || type == BP_VAR_RW) {
  57                 return &EG(error_zval);
  58         } else {
  59                 return &EG(uninitialized_zval);
  60         }
  61 }
  62 /* }}} */
  63 
  64 static void incomplete_class_write_property(zval *object, zval *member, zval *value, void **cache_slot) /* {{{ */
  65 {
  66         incomplete_class_message(object, E_NOTICE);
  67 }
  68 /* }}} */
  69 
  70 static zval *incomplete_class_get_property_ptr_ptr(zval *object, zval *member, int type, void **cache_slot) /* {{{ */
  71 {
  72         incomplete_class_message(object, E_NOTICE);
  73         return &EG(error_zval);
  74 }
  75 /* }}} */
  76 
  77 static void incomplete_class_unset_property(zval *object, zval *member, void **cache_slot) /* {{{ */
  78 {
  79         incomplete_class_message(object, E_NOTICE);
  80 }
  81 /* }}} */
  82 
  83 static int incomplete_class_has_property(zval *object, zval *member, int check_empty, void **cache_slot) /* {{{ */
  84 {
  85         incomplete_class_message(object, E_NOTICE);
  86         return 0;
  87 }
  88 /* }}} */
  89 
  90 static union _zend_function *incomplete_class_get_method(zend_object **object, zend_string *method, const zval *key) /* {{{ */
  91 {
  92         zval zobject;
  93 
  94         ZVAL_OBJ(&zobject, *object);
  95         incomplete_class_message(&zobject, E_ERROR);
  96         return NULL;
  97 }
  98 /* }}} */
  99 
 100 /* {{{ php_create_incomplete_class
 101  */
 102 static zend_object *php_create_incomplete_object(zend_class_entry *class_type)
 103 {
 104         zend_object *object;
 105 
 106         object = zend_objects_new( class_type);
 107         object->handlers = &php_incomplete_object_handlers;
 108 
 109         object_properties_init(object, class_type);
 110 
 111         return object;
 112 }
 113 
 114 PHPAPI zend_class_entry *php_create_incomplete_class(void)
 115 {
 116         zend_class_entry incomplete_class;
 117 
 118         INIT_CLASS_ENTRY(incomplete_class, INCOMPLETE_CLASS, NULL);
 119         incomplete_class.create_object = php_create_incomplete_object;
 120 
 121         memcpy(&php_incomplete_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
 122         php_incomplete_object_handlers.read_property = incomplete_class_get_property;
 123         php_incomplete_object_handlers.has_property = incomplete_class_has_property;
 124         php_incomplete_object_handlers.unset_property = incomplete_class_unset_property;
 125         php_incomplete_object_handlers.write_property = incomplete_class_write_property;
 126         php_incomplete_object_handlers.get_property_ptr_ptr = incomplete_class_get_property_ptr_ptr;
 127     php_incomplete_object_handlers.get_method = incomplete_class_get_method;
 128 
 129         return zend_register_internal_class(&incomplete_class);
 130 }
 131 /* }}} */
 132 
 133 /* {{{ php_lookup_class_name
 134  */
 135 PHPAPI zend_string *php_lookup_class_name(zval *object)
 136 {
 137         zval *val;
 138         HashTable *object_properties;
 139 
 140         object_properties = Z_OBJPROP_P(object);
 141 
 142         if ((val = zend_hash_str_find(object_properties, MAGIC_MEMBER, sizeof(MAGIC_MEMBER)-1)) != NULL && Z_TYPE_P(val) == IS_STRING) {
 143                 return zend_string_copy(Z_STR_P(val));
 144         }
 145 
 146         return NULL;
 147 }
 148 /* }}} */
 149 
 150 /* {{{ php_store_class_name
 151  */
 152 PHPAPI void php_store_class_name(zval *object, const char *name, size_t len)
 153 {
 154         zval val;
 155 
 156 
 157         ZVAL_STRINGL(&val, name, len);
 158         zend_hash_str_update(Z_OBJPROP_P(object), MAGIC_MEMBER, sizeof(MAGIC_MEMBER)-1, &val);
 159 }
 160 /* }}} */
 161 
 162 /*
 163  * Local variables:
 164  * tab-width: 4
 165  * c-basic-offset: 4
 166  * End:
 167  * vim600: sw=4 ts=4 fdm=marker
 168  * vim<600: sw=4 ts=4
 169  */